From f8a58180dd9ab8cfd6c6d677ec5dffe1e5694cb1 Mon Sep 17 00:00:00 2001 From: gangwgr Date: Thu, 4 Dec 2025 16:55:37 +0530 Subject: [PATCH 1/2] OTE extensin of oc --- .gitignore | 1 + Makefile | 5 ++++ README.md | 31 ++++++++++++++++++++++ cmd/oc-tests-ext/main.go | 53 ++++++++++++++++++++++++++++++++++++++ images/cli/Dockerfile.rhel | 5 +++- 5 files changed, 94 insertions(+), 1 deletion(-) create mode 100644 cmd/oc-tests-ext/main.go diff --git a/.gitignore b/.gitignore index 5d347d7989..5bcb8dba23 100644 --- a/.gitignore +++ b/.gitignore @@ -1,4 +1,5 @@ /oc +/oc-tests-ext /clicheck /gendocs /gendocs-admin diff --git a/Makefile b/Makefile index 45c6e531ac..d9a0855f9f 100644 --- a/Makefile +++ b/Makefile @@ -71,6 +71,11 @@ oc: GO_BUILD_PACKAGES :=./cmd/oc oc: build .PHONY: oc +oc-tests-ext: GO_BUILD_PACKAGES :=./cmd/oc-tests-ext +oc-tests-ext: GO_BUILD_FLAGS :=-tags 'include_gcs include_oss containers_image_openpgp' +oc-tests-ext: build +.PHONY: oc-tests-ext + update: update-generated-completions .PHONY: update diff --git a/README.md b/README.md index 729151a8c7..2fa69033d2 100644 --- a/README.md +++ b/README.md @@ -61,6 +61,37 @@ If you've found a security issue that you'd like to disclose confidentially please contact Red Hat's Product Security team. Details at https://access.redhat.com/security/team/contact +## Tests + +This repository is compatible with the "OpenShift Tests Extension (OTE)" framework. + +### Building the test binary +```bash +make oc-tests-ext +``` + +### Running test suites and tests +```bash +# Run a specific test suite or test +./oc-tests-ext run-suite openshift/oc/all +./oc-tests-ext run-test "test-name" + +# Run with JUnit output +./oc-tests-ext run-suite openshift/oc/all --junit-path=/tmp/junit-results/junit.xml +./oc-tests-ext run-test "test-name" --junit-path=/tmp/junit-results/junit.xml +``` + +### Listing available tests and suites +```bash +# List all test suites +./oc-tests-ext list-suites + +# List tests in a specific suite +./oc-tests-ext list-tests openshift/oc/all +``` + +The test extension binary is included in the production image for CI/CD integration. + # License oc is licensed under the [Apache License, Version 2.0](http://www.apache.org/licenses/). diff --git a/cmd/oc-tests-ext/main.go b/cmd/oc-tests-ext/main.go new file mode 100644 index 0000000000..ab12d1dc3c --- /dev/null +++ b/cmd/oc-tests-ext/main.go @@ -0,0 +1,53 @@ +package main + +import ( + "context" + "os" + + "github.com/spf13/cobra" + "k8s.io/component-base/cli" + + otecmd "github.com/openshift-eng/openshift-tests-extension/pkg/cmd" + oteextension "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift/oc/pkg/version" + + "k8s.io/klog/v2" +) + +func main() { + command := newOperatorTestCommand(context.Background()) + code := cli.Run(command) + os.Exit(code) +} + +func newOperatorTestCommand(ctx context.Context) *cobra.Command { + registry := prepareOperatorTestsRegistry() + + cmd := &cobra.Command{ + Use: "oc-tests-ext", + Short: "A binary used to run oc tests as part of OTE.", + Run: func(cmd *cobra.Command, args []string) { + if err := cmd.Help(); err != nil { + klog.Fatal(err) + } + }, + } + + if v := version.Get().String(); len(v) == 0 { + cmd.Version = "" + } else { + cmd.Version = v + } + + cmd.AddCommand(otecmd.DefaultExtensionCommands(registry)...) + + return cmd +} + +func prepareOperatorTestsRegistry() *oteextension.Registry { + registry := oteextension.NewRegistry() + extension := oteextension.NewExtension("openshift", "payload", "oc") + + registry.Register(extension) + return registry +} diff --git a/images/cli/Dockerfile.rhel b/images/cli/Dockerfile.rhel index 7c8afe766a..3889a0041c 100644 --- a/images/cli/Dockerfile.rhel +++ b/images/cli/Dockerfile.rhel @@ -1,10 +1,13 @@ FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.24-openshift-4.21 AS builder WORKDIR /go/src/github.com/openshift/oc COPY . . -RUN make build --warn-undefined-variables +RUN make build --warn-undefined-variables \ + && make oc-tests-ext \ + && gzip oc-tests-ext FROM registry.ci.openshift.org/ocp/4.21:base-rhel9 COPY --from=builder /go/src/github.com/openshift/oc/oc /usr/bin/ +COPY --from=builder /go/src/github.com/openshift/oc/oc-tests-ext.gz /usr/bin/ RUN for i in kubectl openshift-deploy openshift-docker-build openshift-sti-build openshift-git-clone openshift-manage-dockerfile openshift-extract-image-content openshift-recycle; do ln -sf /usr/bin/oc /usr/bin/$i; done LABEL io.k8s.display-name="OpenShift Client" \ io.k8s.description="OpenShift is a platform for developing, building, and deploying containerized applications." \ From 34ac8c5853da5b8e74340ca869c46f572da5063a Mon Sep 17 00:00:00 2001 From: gangwgr Date: Thu, 4 Dec 2025 16:56:19 +0530 Subject: [PATCH 2/2] update go.mod and vendor --- README.md | 31 - go.mod | 7 + go.sum | 15 +- vendor/cel.dev/expr/.bazelversion | 2 + vendor/cel.dev/expr/.gitattributes | 2 + vendor/cel.dev/expr/.gitignore | 2 + vendor/cel.dev/expr/BUILD.bazel | 34 + vendor/cel.dev/expr/CODE_OF_CONDUCT.md | 25 + vendor/cel.dev/expr/CONTRIBUTING.md | 32 + vendor/cel.dev/expr/GOVERNANCE.md | 43 + vendor/cel.dev/expr/LICENSE | 202 + vendor/cel.dev/expr/MAINTAINERS.md | 13 + vendor/cel.dev/expr/MODULE.bazel | 74 + 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--git a/README.md b/README.md index 2fa69033d2..729151a8c7 100644 --- a/README.md +++ b/README.md @@ -61,37 +61,6 @@ If you've found a security issue that you'd like to disclose confidentially please contact Red Hat's Product Security team. Details at https://access.redhat.com/security/team/contact -## Tests - -This repository is compatible with the "OpenShift Tests Extension (OTE)" framework. - -### Building the test binary -```bash -make oc-tests-ext -``` - -### Running test suites and tests -```bash -# Run a specific test suite or test -./oc-tests-ext run-suite openshift/oc/all -./oc-tests-ext run-test "test-name" - -# Run with JUnit output -./oc-tests-ext run-suite openshift/oc/all --junit-path=/tmp/junit-results/junit.xml -./oc-tests-ext run-test "test-name" --junit-path=/tmp/junit-results/junit.xml -``` - -### Listing available tests and suites -```bash -# List all test suites -./oc-tests-ext list-suites - -# List tests in a specific suite -./oc-tests-ext list-tests openshift/oc/all -``` - -The test extension binary is included in the production image for CI/CD integration. - # License oc is licensed under the [Apache License, Version 2.0](http://www.apache.org/licenses/). diff --git a/go.mod b/go.mod index 8b1a55afbe..5eb5c928c2 100644 --- a/go.mod +++ b/go.mod @@ -38,6 +38,7 @@ require ( github.com/moby/term v0.5.2 github.com/opencontainers/go-digest v1.0.0 github.com/opencontainers/image-spec v1.1.0 + github.com/openshift-eng/openshift-tests-extension v0.0.0-20251125140340-13f4631a80b0 github.com/openshift/api v0.0.0-20251020135558-286504b695bc github.com/openshift/build-machinery-go v0.0.0-20251020112516-49aa9f5db6d8 github.com/openshift/client-go v0.0.0-20251015124057-db0dee36e235 @@ -69,10 +70,12 @@ require ( ) require ( + cel.dev/expr v0.24.0 // indirect github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c // indirect github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect github.com/BurntSushi/toml v1.5.0 // indirect github.com/Microsoft/go-winio v0.6.2 // indirect + github.com/antlr4-go/antlr/v4 v4.13.0 // indirect github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.1 // indirect github.com/aws/aws-sdk-go-v2/credentials v1.18.16 // indirect @@ -133,6 +136,7 @@ require ( github.com/gonum/matrix v0.0.0-20181209220409-c518dec07be9 // indirect github.com/gonum/stat v0.0.0-20181125101827-41a0da705a5b // indirect github.com/google/btree v1.1.3 // indirect + github.com/google/cel-go v0.26.0 // indirect github.com/google/gnostic-models v0.7.0 // indirect github.com/google/go-containerregistry v0.20.0 // indirect github.com/google/pprof v0.0.0-20241029153458-d1b30febd7db // indirect @@ -184,6 +188,7 @@ require ( github.com/sigstore/rekor v1.3.6 // indirect github.com/sigstore/sigstore v1.8.4 // indirect github.com/sirupsen/logrus v1.9.3 // indirect + github.com/stoewer/go-strcase v1.3.0 // indirect github.com/stretchr/testify v1.11.1 // indirect github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 // indirect github.com/x448/float16 v0.8.4 // indirect @@ -197,6 +202,8 @@ require ( golang.org/x/text v0.30.0 // indirect golang.org/x/time v0.9.0 // indirect golang.org/x/tools v0.37.0 // indirect + google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb // indirect google.golang.org/protobuf v1.36.8 // indirect gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect gopkg.in/inf.v0 v0.9.1 // indirect diff --git a/go.sum b/go.sum index c822a35761..dad3e4664b 100644 --- a/go.sum +++ b/go.sum @@ -1,5 +1,7 @@ al.essio.dev/pkg/shellescape v1.6.0 h1:NxFcEqzFSEVCGN2yq7Huv/9hyCEGVa/TncnOOBBeXHA= al.essio.dev/pkg/shellescape v1.6.0/go.mod h1:6sIqp7X2P6mThCQ7twERpZTuigpr6KbZWtls1U8I890= +cel.dev/expr v0.24.0 h1:56OvJKSH3hDGL0ml5uSxZmz3/3Pq4tJ+fb1unVLAFcY= +cel.dev/expr v0.24.0/go.mod h1:hLPLo1W4QUmuYdA72RBX06QTs6MXw941piREPl3Yfiw= dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk= dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk= github.com/AaronO/go-git-http v0.0.0-20161214145340-1d9485b3a98f h1:x/RDwGRneK2/891S2o7KhZt3MhHMSCssoeDOfvolTMk= @@ -27,6 +29,8 @@ github.com/alicebob/sqlittle v1.4.0 h1:vgYt0nAjhdf/hg52MjKJ84g/uTzBPfrvI+VUBrIgh github.com/alicebob/sqlittle v1.4.0/go.mod h1:Co1L1qxHqCwf41puWhk2HOodojR0mcsAV4BIt8byZh8= github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNgfBlViaCIJKLlCJ6/fmUseuG0wVQ= github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8= +github.com/antlr4-go/antlr/v4 v4.13.0 h1:lxCg3LAv+EUK6t1i0y1V6/SLeUi0eKEKdhQAlS8TVTI= +github.com/antlr4-go/antlr/v4 v4.13.0/go.mod h1:pfChB/xh/Unjila75QW7+VU4TSnWnnk9UTnmpPaOR2g= github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio= github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs= github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3dyBCFEj5IhUbnKptjxatkF07cF2ak3yi77so= @@ -228,6 +232,8 @@ github.com/gonum/stat v0.0.0-20181125101827-41a0da705a5b h1:fbskpz/cPqWH8VqkQ7LJ github.com/gonum/stat v0.0.0-20181125101827-41a0da705a5b/go.mod h1:Z4GIJBJO3Wa4gD4vbwQxXXZ+WHmW6E9ixmNrwvs0iZs= github.com/google/btree v1.1.3 h1:CVpQJjYgC4VbzxeGVHfvZrv1ctoYCAI8vbl07Fcxlyg= github.com/google/btree v1.1.3/go.mod h1:qOPhT0dTNdNzV6Z/lhRX0YXUafgPLFUh+gZMl761Gm4= +github.com/google/cel-go v0.26.0 h1:DPGjXackMpJWH680oGY4lZhYjIameYmR+/6RBdDGmaI= +github.com/google/cel-go v0.26.0/go.mod h1:A9O8OU9rdvrK5MQyrqfIxo1a0u4g3sF8KB6PUIaryMM= github.com/google/gnostic-models v0.7.0 h1:qwTtogB15McXDaNqTZdzPJRHvaVJlAl+HVQnLmJEJxo= github.com/google/gnostic-models v0.7.0/go.mod h1:whL5G0m6dmc5cPxKc5bdKdEN3UjI7OUGxBlw57miDrQ= github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= @@ -366,6 +372,8 @@ github.com/opencontainers/runtime-spec v1.2.1 h1:S4k4ryNgEpxW1dzyqffOmhI1BHYcjzU github.com/opencontainers/runtime-spec v1.2.1/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0= github.com/opencontainers/selinux v1.12.0 h1:6n5JV4Cf+4y0KNXW48TLj5DwfXpvWlxXplUkdTrmPb8= github.com/opencontainers/selinux v1.12.0/go.mod h1:BTPX+bjVbWGXw7ZZWUbdENt8w0htPSrlgOOysQaU62U= +github.com/openshift-eng/openshift-tests-extension v0.0.0-20251125140340-13f4631a80b0 h1:d27Tezkhb3zGSuweEeNXYnMK3aJLYgOzVu32cVTfhDE= +github.com/openshift-eng/openshift-tests-extension v0.0.0-20251125140340-13f4631a80b0/go.mod h1:6gkP5f2HL0meusT0Aim8icAspcD1cG055xxBZ9yC68M= github.com/openshift/api v0.0.0-20251020135558-286504b695bc h1:hUPxgvR9S2Xt6IUeToTVxSr6mYfV0dyedmccLoSrbIo= github.com/openshift/api v0.0.0-20251020135558-286504b695bc/go.mod h1:d5uzF0YN2nQQFA0jIEWzzOZ+edmo6wzlGLvx5Fhz4uY= github.com/openshift/build-machinery-go v0.0.0-20251020112516-49aa9f5db6d8 h1:2sktNP3CNpDb5F9rIg1qcBYU4lFxsOfBsUSP32LwAPo= @@ -436,9 +444,12 @@ github.com/spf13/cobra v1.10.1/go.mod h1:7SmJGaTHFVBY0jW4NXGluQoLvhqFQM+6XSKD+P4 github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk= github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= +github.com/stoewer/go-strcase v1.3.0 h1:g0eASXYtp+yvN9fK8sH94oCIk0fau9uV1/ZdJ0AVEzs= +github.com/stoewer/go-strcase v1.3.0/go.mod h1:fAH5hQ5pehh+j3nZfvwdk2RgEgQjAoM8wodgtPmh1xo= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw= +github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo= github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY= github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA= github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= @@ -447,6 +458,7 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU= +github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U= github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U= github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 h1:e/5i7d4oYZ+C1wj2THlRK+oAhjeS/TRQwMfkIuet3w0= @@ -551,7 +563,8 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= -google.golang.org/genproto v0.0.0-20240311173647-c811ad7063a7 h1:ImUcDPHjTrAqNhlOkSocDLfG9rrNHH7w7uoKWPaWZ8s= +google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb h1:p31xT4yrYrSM/G4Sn2+TNUkVhFCbG9y8itM2S6Th950= +google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb/go.mod h1:jbe3Bkdp+Dh2IrslsFCklNhweNTBgSYanP1UXhJDhKg= google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb h1:TLPQVbx1GJ8VKZxz52VAxl1EBgKXXbTiU9Fc5fZeLn4= google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb/go.mod h1:LuRYeWDFV6WOn90g357N17oMCaxpgCnbi/44qJvDn2I= google.golang.org/grpc v1.72.1 h1:HR03wO6eyZ7lknl75XlxABNVLLFc2PAb6mHlYh756mA= diff --git a/vendor/cel.dev/expr/.bazelversion b/vendor/cel.dev/expr/.bazelversion new file mode 100644 index 0000000000..13c50892bd --- /dev/null +++ b/vendor/cel.dev/expr/.bazelversion @@ -0,0 +1,2 @@ +7.3.2 +# Keep this pinned version in parity with cel-go diff --git a/vendor/cel.dev/expr/.gitattributes b/vendor/cel.dev/expr/.gitattributes new file mode 100644 index 0000000000..3de1ec213a --- /dev/null +++ b/vendor/cel.dev/expr/.gitattributes @@ -0,0 +1,2 @@ +*.pb.go linguist-generated=true +*.pb.go -diff -merge diff --git a/vendor/cel.dev/expr/.gitignore b/vendor/cel.dev/expr/.gitignore new file mode 100644 index 0000000000..0d4fed27c9 --- /dev/null +++ b/vendor/cel.dev/expr/.gitignore @@ -0,0 +1,2 @@ +bazel-* +MODULE.bazel.lock diff --git a/vendor/cel.dev/expr/BUILD.bazel b/vendor/cel.dev/expr/BUILD.bazel new file mode 100644 index 0000000000..37d8adc950 --- /dev/null +++ b/vendor/cel.dev/expr/BUILD.bazel @@ -0,0 +1,34 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package(default_visibility = ["//visibility:public"]) + +licenses(["notice"]) # Apache 2.0 + +go_library( + name = "expr", + srcs = [ + "checked.pb.go", + "eval.pb.go", + "explain.pb.go", + "syntax.pb.go", + "value.pb.go", + ], + importpath = "cel.dev/expr", + visibility = ["//visibility:public"], + deps = [ + "@org_golang_google_genproto_googleapis_rpc//status:go_default_library", + "@org_golang_google_protobuf//reflect/protoreflect", + "@org_golang_google_protobuf//runtime/protoimpl", + "@org_golang_google_protobuf//types/known/anypb", + "@org_golang_google_protobuf//types/known/durationpb", + "@org_golang_google_protobuf//types/known/emptypb", + "@org_golang_google_protobuf//types/known/structpb", + "@org_golang_google_protobuf//types/known/timestamppb", + ], +) + +alias( + name = "go_default_library", + actual = ":expr", + visibility = ["//visibility:public"], +) diff --git a/vendor/cel.dev/expr/CODE_OF_CONDUCT.md b/vendor/cel.dev/expr/CODE_OF_CONDUCT.md new file mode 100644 index 0000000000..59908e2d8e --- /dev/null +++ b/vendor/cel.dev/expr/CODE_OF_CONDUCT.md @@ -0,0 +1,25 @@ +# Contributor Code of Conduct +## Version 0.1.1 (adapted from 0.3b-angular) + +As contributors and maintainers of the Common Expression Language +(CEL) project, we pledge to respect everyone who contributes by +posting issues, updating documentation, submitting pull requests, +providing feedback in comments, and any other activities. + +Communication through any of CEL's channels (GitHub, Gitter, IRC, +mailing lists, Google+, Twitter, etc.) must be constructive and never +resort to personal attacks, trolling, public or private harassment, +insults, or other unprofessional conduct. + +We promise to extend courtesy and respect to everyone involved in this +project regardless of gender, gender identity, sexual orientation, +disability, age, race, ethnicity, religion, or level of experience. We +expect anyone contributing to the project to do the same. + +If any member of the community violates this code of conduct, the +maintainers of the CEL project may take action, removing issues, +comments, and PRs or blocking accounts as deemed appropriate. + +If you are subject to or witness unacceptable behavior, or have any +other concerns, please email us at +[cel-conduct@google.com](mailto:cel-conduct@google.com). diff --git a/vendor/cel.dev/expr/CONTRIBUTING.md b/vendor/cel.dev/expr/CONTRIBUTING.md new file mode 100644 index 0000000000..8f5fd5c31f --- /dev/null +++ b/vendor/cel.dev/expr/CONTRIBUTING.md @@ -0,0 +1,32 @@ +# How to Contribute + +We'd love to accept your patches and contributions to this project. There are a +few guidelines you need to follow. + +## Contributor License Agreement + +Contributions to this project must be accompanied by a Contributor License +Agreement. You (or your employer) retain the copyright to your contribution, +this simply gives us permission to use and redistribute your contributions as +part of the project. Head over to to see +your current agreements on file or to sign a new one. + +You generally only need to submit a CLA once, so if you've already submitted one +(even if it was for a different project), you probably don't need to do it +again. + +## Code reviews + +All submissions, including submissions by project members, require review. We +use GitHub pull requests for this purpose. Consult +[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more +information on using pull requests. + +## What to expect from maintainers + +Expect maintainers to respond to new issues or pull requests within a week. +For outstanding and ongoing issues and particularly for long-running +pull requests, expect the maintainers to review within a week of a +contributor asking for a new review. There is no commitment to resolution -- +merging or closing a pull request, or fixing or closing an issue -- because some +issues will require more discussion than others. diff --git a/vendor/cel.dev/expr/GOVERNANCE.md b/vendor/cel.dev/expr/GOVERNANCE.md new file mode 100644 index 0000000000..0a525bc17d --- /dev/null +++ b/vendor/cel.dev/expr/GOVERNANCE.md @@ -0,0 +1,43 @@ +# Project Governance + +This document defines the governance process for the CEL language. CEL is +Google-developed, but openly governed. Major contributors to the CEL +specification and its corresponding implementations constitute the CEL +Language Council. New members may be added by a unanimous vote of the +Council. + +The MAINTAINERS.md file lists the members of the CEL Language Council, and +unofficially indicates the "areas of expertise" of each member with respect +to the publicly available CEL repos. + +## Code Changes + +Code changes must follow the standard pull request (PR) model documented in the +CONTRIBUTING.md for each CEL repo. All fixes and features must be reviewed by a +maintainer. The maintainer reserves the right to request that any feature +request (FR) or PR be reviewed by the language council. + +## Syntax and Semantic Changes + +Syntactic and semantic changes must be reviewed by the CEL Language Council. +Maintainers may also request language council review at their discretion. + +The review process is as follows: + +- Create a Feature Request in the CEL-Spec repo. The feature description will + serve as an abstract for the detailed design document. +- Co-develop a design document with the Language Council. +- Once the proposer gives the design document approval, the document will be + linked to the FR in the CEL-Spec repo and opened for comments to members of + the cel-lang-discuss@googlegroups.com. +- The Language Council will review the design doc at the next council meeting + (once every three weeks) and the council decision included in the document. + +If the proposal is approved, the spec will be updated by a maintainer (if +applicable) and a rationale will be included in the CEL-Spec wiki to ensure +future developers may follow CEL's growth and direction over time. + +Approved proposals may be implemented by the proposer or by the maintainers as +the parties see fit. At the discretion of the maintainer, changes from the +approved design are permitted during implementation if they improve the user +experience and clarity of the feature. diff --git a/vendor/cel.dev/expr/LICENSE b/vendor/cel.dev/expr/LICENSE new file mode 100644 index 0000000000..d645695673 --- /dev/null +++ b/vendor/cel.dev/expr/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/cel.dev/expr/MAINTAINERS.md b/vendor/cel.dev/expr/MAINTAINERS.md new file mode 100644 index 0000000000..1ed2eb8ab3 --- /dev/null +++ b/vendor/cel.dev/expr/MAINTAINERS.md @@ -0,0 +1,13 @@ +# CEL Language Council + +| Name | Company | Area of Expertise | +|-----------------|--------------|-------------------| +| Alfred Fuller | Facebook | cel-cpp, cel-spec | +| Jim Larson | Google | cel-go, cel-spec | +| Matthais Blume | Google | cel-spec | +| Tristan Swadell | Google | cel-go, cel-spec | + +## Emeritus + +* Sanjay Ghemawat (Google) +* Wolfgang Grieskamp (Facebook) diff --git a/vendor/cel.dev/expr/MODULE.bazel b/vendor/cel.dev/expr/MODULE.bazel new file mode 100644 index 0000000000..85ac9ff617 --- /dev/null +++ b/vendor/cel.dev/expr/MODULE.bazel @@ -0,0 +1,74 @@ +module( + name = "cel-spec", +) + +bazel_dep( + name = "bazel_skylib", + version = "1.7.1", +) +bazel_dep( + name = "gazelle", + version = "0.39.1", + repo_name = "bazel_gazelle", +) +bazel_dep( + name = "googleapis", + version = "0.0.0-20241220-5e258e33.bcr.1", + repo_name = "com_google_googleapis", +) +bazel_dep( + name = "googleapis-cc", + version = "1.0.0", +) +bazel_dep( + name = "googleapis-java", + version = "1.0.0", +) +bazel_dep( + name = "googleapis-go", + version = "1.0.0", +) +bazel_dep( + name = "protobuf", + version = "27.0", + repo_name = "com_google_protobuf", +) +bazel_dep( + name = "rules_cc", + version = "0.0.17", +) +bazel_dep( + name = "rules_go", + version = "0.53.0", + repo_name = "io_bazel_rules_go", +) +bazel_dep( + name = "rules_java", + version = "7.6.5", +) +bazel_dep( + name = "rules_proto", + version = "7.0.2", +) +bazel_dep( + name = "rules_python", + version = "0.35.0", +) + +### PYTHON ### +python = use_extension("@rules_python//python/extensions:python.bzl", "python") +python.toolchain( + ignore_root_user_error = True, + python_version = "3.11", +) + +go_sdk = use_extension("@io_bazel_rules_go//go:extensions.bzl", "go_sdk") +go_sdk.download(version = "1.22.0") + +go_deps = use_extension("@bazel_gazelle//:extensions.bzl", "go_deps") +go_deps.from_file(go_mod = "//:go.mod") +use_repo( + go_deps, + "org_golang_google_genproto_googleapis_rpc", + "org_golang_google_protobuf", +) diff --git a/vendor/cel.dev/expr/README.md b/vendor/cel.dev/expr/README.md new file mode 100644 index 0000000000..42d67f87c2 --- /dev/null +++ b/vendor/cel.dev/expr/README.md @@ -0,0 +1,71 @@ +# Common Expression Language + +The Common Expression Language (CEL) implements common semantics for expression +evaluation, enabling different applications to more easily interoperate. + +Key Applications + +* Security policy: organizations have complex infrastructure and need common + tooling to reason about the system as a whole +* Protocols: expressions are a useful data type and require interoperability + across programming languages and platforms. + + +Guiding philosophy: + +1. Keep it small & fast. + * CEL evaluates in linear time, is mutation free, and not Turing-complete. + This limitation is a feature of the language design, which allows the + implementation to evaluate orders of magnitude faster than equivalently + sandboxed JavaScript. +2. Make it extensible. + * CEL is designed to be embedded in applications, and allows for + extensibility via its context which allows for functions and data to be + provided by the software that embeds it. +3. Developer-friendly. + * The language is approachable to developers. The initial spec was based + on the experience of developing Firebase Rules and usability testing + many prior iterations. + * The library itself and accompanying toolings should be easy to adopt by + teams that seek to integrate CEL into their platforms. + +The required components of a system that supports CEL are: + +* The textual representation of an expression as written by a developer. It is + of similar syntax to expressions in C/C++/Java/JavaScript +* A representation of the program's abstract syntax tree (AST). +* A compiler library that converts the textual representation to the binary + representation. This can be done ahead of time (in the control plane) or + just before evaluation (in the data plane). +* A context containing one or more typed variables, often protobuf messages. + Most use-cases will use `attribute_context.proto` +* An evaluator library that takes the binary format in the context and + produces a result, usually a Boolean. + +For use cases which require persistence or cross-process communcation, it is +highly recommended to serialize the type-checked expression as a protocol +buffer. The CEL team will maintains canonical protocol buffers for ASTs and +will keep these versions identical and wire-compatible in perpetuity: + +* [CEL canonical](https://github.com/google/cel-spec/tree/master/proto/cel/expr) +* [CEL v1alpha1](https://github.com/googleapis/googleapis/tree/master/google/api/expr/v1alpha1) + + +Example of boolean conditions and object construction: + +``` c +// Condition +account.balance >= transaction.withdrawal + || (account.overdraftProtection + && account.overdraftLimit >= transaction.withdrawal - account.balance) + +// Object construction +common.GeoPoint{ latitude: 10.0, longitude: -5.5 } +``` + +For more detail, see: + +* [Introduction](doc/intro.md) +* [Language Definition](doc/langdef.md) + +Released under the [Apache License](LICENSE). diff --git a/vendor/cel.dev/expr/WORKSPACE b/vendor/cel.dev/expr/WORKSPACE new file mode 100644 index 0000000000..b6dc9ed673 --- /dev/null +++ b/vendor/cel.dev/expr/WORKSPACE @@ -0,0 +1,145 @@ +load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive") + +http_archive( + name = "io_bazel_rules_go", + sha256 = "099a9fb96a376ccbbb7d291ed4ecbdfd42f6bc822ab77ae6f1b5cb9e914e94fa", + urls = [ + "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.35.0/rules_go-v0.35.0.zip", + "https://github.com/bazelbuild/rules_go/releases/download/v0.35.0/rules_go-v0.35.0.zip", + ], +) + +http_archive( + name = "bazel_gazelle", + sha256 = "ecba0f04f96b4960a5b250c8e8eeec42281035970aa8852dda73098274d14a1d", + urls = [ + "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.29.0/bazel-gazelle-v0.29.0.tar.gz", + "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.29.0/bazel-gazelle-v0.29.0.tar.gz", + ], +) + +http_archive( + name = "rules_proto", + sha256 = "e017528fd1c91c5a33f15493e3a398181a9e821a804eb7ff5acdd1d2d6c2b18d", + strip_prefix = "rules_proto-4.0.0-3.20.0", + urls = [ + "https://github.com/bazelbuild/rules_proto/archive/refs/tags/4.0.0-3.20.0.tar.gz", + ], +) + +# googleapis as of 09/16/2024 +http_archive( + name = "com_google_googleapis", + strip_prefix = "googleapis-4082d5e51e8481f6ccc384cacd896f4e78f19dee", + sha256 = "57319889d47578b3c89bf1b3f34888d796a8913d63b32d750a4cd12ed303c4e8", + urls = [ + "https://github.com/googleapis/googleapis/archive/4082d5e51e8481f6ccc384cacd896f4e78f19dee.tar.gz", + ], +) + +# protobuf +http_archive( + name = "com_google_protobuf", + sha256 = "8242327e5df8c80ba49e4165250b8f79a76bd11765facefaaecfca7747dc8da2", + strip_prefix = "protobuf-3.21.5", + urls = ["https://github.com/protocolbuffers/protobuf/archive/v3.21.5.zip"], +) + +# googletest +http_archive( + name = "com_google_googletest", + urls = ["https://github.com/google/googletest/archive/master.zip"], + strip_prefix = "googletest-master", +) + +# gflags +http_archive( + name = "com_github_gflags_gflags", + sha256 = "6e16c8bc91b1310a44f3965e616383dbda48f83e8c1eaa2370a215057b00cabe", + strip_prefix = "gflags-77592648e3f3be87d6c7123eb81cbad75f9aef5a", + urls = [ + "https://mirror.bazel.build/github.com/gflags/gflags/archive/77592648e3f3be87d6c7123eb81cbad75f9aef5a.tar.gz", + "https://github.com/gflags/gflags/archive/77592648e3f3be87d6c7123eb81cbad75f9aef5a.tar.gz", + ], +) + +# glog +http_archive( + name = "com_google_glog", + sha256 = "1ee310e5d0a19b9d584a855000434bb724aa744745d5b8ab1855c85bff8a8e21", + strip_prefix = "glog-028d37889a1e80e8a07da1b8945ac706259e5fd8", + urls = [ + "https://mirror.bazel.build/github.com/google/glog/archive/028d37889a1e80e8a07da1b8945ac706259e5fd8.tar.gz", + "https://github.com/google/glog/archive/028d37889a1e80e8a07da1b8945ac706259e5fd8.tar.gz", + ], +) + +# absl +http_archive( + name = "com_google_absl", + strip_prefix = "abseil-cpp-master", + urls = ["https://github.com/abseil/abseil-cpp/archive/master.zip"], +) + +load("@io_bazel_rules_go//go:deps.bzl", "go_rules_dependencies", "go_register_toolchains") +load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies", "go_repository") +load("@com_google_googleapis//:repository_rules.bzl", "switched_rules_by_language") +load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_proto_toolchains") +load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps") + +switched_rules_by_language( + name = "com_google_googleapis_imports", + cc = True, +) + +# Do *not* call *_dependencies(), etc, yet. See comment at the end. + +# Generated Google APIs protos for Golang +# Generated Google APIs protos for Golang 08/26/2024 +go_repository( + name = "org_golang_google_genproto_googleapis_api", + build_file_proto_mode = "disable_global", + importpath = "google.golang.org/genproto/googleapis/api", + sum = "h1:YcyjlL1PRr2Q17/I0dPk2JmYS5CDXfcdb2Z3YRioEbw=", + version = "v0.0.0-20240826202546-f6391c0de4c7", +) + +# Generated Google APIs protos for Golang 08/26/2024 +go_repository( + name = "org_golang_google_genproto_googleapis_rpc", + build_file_proto_mode = "disable_global", + importpath = "google.golang.org/genproto/googleapis/rpc", + sum = "h1:2035KHhUv+EpyB+hWgJnaWKJOdX1E95w2S8Rr4uWKTs=", + version = "v0.0.0-20240826202546-f6391c0de4c7", +) + +# gRPC deps +go_repository( + name = "org_golang_google_grpc", + build_file_proto_mode = "disable_global", + importpath = "google.golang.org/grpc", + tag = "v1.49.0", +) + +go_repository( + name = "org_golang_x_net", + importpath = "golang.org/x/net", + sum = "h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=", + version = "v0.0.0-20190311183353-d8887717615a", +) + +go_repository( + name = "org_golang_x_text", + importpath = "golang.org/x/text", + sum = "h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=", + version = "v0.3.2", +) + +# Run the dependencies at the end. These will silently try to import some +# of the above repositories but at different versions, so ours must come first. +go_rules_dependencies() +go_register_toolchains(version = "1.19.1") +gazelle_dependencies() +rules_proto_dependencies() +rules_proto_toolchains() +protobuf_deps() diff --git a/vendor/cel.dev/expr/WORKSPACE.bzlmod b/vendor/cel.dev/expr/WORKSPACE.bzlmod new file mode 100644 index 0000000000..e69de29bb2 diff --git a/vendor/cel.dev/expr/checked.pb.go b/vendor/cel.dev/expr/checked.pb.go new file mode 100644 index 0000000000..bb225c8ab3 --- /dev/null +++ b/vendor/cel.dev/expr/checked.pb.go @@ -0,0 +1,1432 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.28.1 +// protoc v3.21.5 +// source: cel/expr/checked.proto + +package expr + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + emptypb "google.golang.org/protobuf/types/known/emptypb" + structpb "google.golang.org/protobuf/types/known/structpb" + reflect "reflect" + sync "sync" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +type Type_PrimitiveType int32 + +const ( + Type_PRIMITIVE_TYPE_UNSPECIFIED Type_PrimitiveType = 0 + Type_BOOL Type_PrimitiveType = 1 + Type_INT64 Type_PrimitiveType = 2 + Type_UINT64 Type_PrimitiveType = 3 + Type_DOUBLE Type_PrimitiveType = 4 + Type_STRING Type_PrimitiveType = 5 + Type_BYTES Type_PrimitiveType = 6 +) + +// Enum value maps for Type_PrimitiveType. +var ( + Type_PrimitiveType_name = map[int32]string{ + 0: "PRIMITIVE_TYPE_UNSPECIFIED", + 1: "BOOL", + 2: "INT64", + 3: "UINT64", + 4: "DOUBLE", + 5: "STRING", + 6: "BYTES", + } + Type_PrimitiveType_value = map[string]int32{ + "PRIMITIVE_TYPE_UNSPECIFIED": 0, + "BOOL": 1, + "INT64": 2, + "UINT64": 3, + "DOUBLE": 4, + "STRING": 5, + "BYTES": 6, + } +) + +func (x Type_PrimitiveType) Enum() *Type_PrimitiveType { + p := new(Type_PrimitiveType) + *p = x + return p +} + +func (x Type_PrimitiveType) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (Type_PrimitiveType) Descriptor() protoreflect.EnumDescriptor { + return file_cel_expr_checked_proto_enumTypes[0].Descriptor() +} + +func (Type_PrimitiveType) Type() protoreflect.EnumType { + return &file_cel_expr_checked_proto_enumTypes[0] +} + +func (x Type_PrimitiveType) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use Type_PrimitiveType.Descriptor instead. +func (Type_PrimitiveType) EnumDescriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1, 0} +} + +type Type_WellKnownType int32 + +const ( + Type_WELL_KNOWN_TYPE_UNSPECIFIED Type_WellKnownType = 0 + Type_ANY Type_WellKnownType = 1 + Type_TIMESTAMP Type_WellKnownType = 2 + Type_DURATION Type_WellKnownType = 3 +) + +// Enum value maps for Type_WellKnownType. +var ( + Type_WellKnownType_name = map[int32]string{ + 0: "WELL_KNOWN_TYPE_UNSPECIFIED", + 1: "ANY", + 2: "TIMESTAMP", + 3: "DURATION", + } + Type_WellKnownType_value = map[string]int32{ + "WELL_KNOWN_TYPE_UNSPECIFIED": 0, + "ANY": 1, + "TIMESTAMP": 2, + "DURATION": 3, + } +) + +func (x Type_WellKnownType) Enum() *Type_WellKnownType { + p := new(Type_WellKnownType) + *p = x + return p +} + +func (x Type_WellKnownType) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (Type_WellKnownType) Descriptor() protoreflect.EnumDescriptor { + return file_cel_expr_checked_proto_enumTypes[1].Descriptor() +} + +func (Type_WellKnownType) Type() protoreflect.EnumType { + return &file_cel_expr_checked_proto_enumTypes[1] +} + +func (x Type_WellKnownType) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use Type_WellKnownType.Descriptor instead. +func (Type_WellKnownType) EnumDescriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1, 1} +} + +type CheckedExpr struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + ReferenceMap map[int64]*Reference `protobuf:"bytes,2,rep,name=reference_map,json=referenceMap,proto3" json:"reference_map,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + TypeMap map[int64]*Type `protobuf:"bytes,3,rep,name=type_map,json=typeMap,proto3" json:"type_map,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + SourceInfo *SourceInfo `protobuf:"bytes,5,opt,name=source_info,json=sourceInfo,proto3" json:"source_info,omitempty"` + ExprVersion string `protobuf:"bytes,6,opt,name=expr_version,json=exprVersion,proto3" json:"expr_version,omitempty"` + Expr *Expr `protobuf:"bytes,4,opt,name=expr,proto3" json:"expr,omitempty"` +} + +func (x *CheckedExpr) Reset() { + *x = CheckedExpr{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *CheckedExpr) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*CheckedExpr) ProtoMessage() {} + +func (x *CheckedExpr) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use CheckedExpr.ProtoReflect.Descriptor instead. +func (*CheckedExpr) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{0} +} + +func (x *CheckedExpr) GetReferenceMap() map[int64]*Reference { + if x != nil { + return x.ReferenceMap + } + return nil +} + +func (x *CheckedExpr) GetTypeMap() map[int64]*Type { + if x != nil { + return x.TypeMap + } + return nil +} + +func (x *CheckedExpr) GetSourceInfo() *SourceInfo { + if x != nil { + return x.SourceInfo + } + return nil +} + +func (x *CheckedExpr) GetExprVersion() string { + if x != nil { + return x.ExprVersion + } + return "" +} + +func (x *CheckedExpr) GetExpr() *Expr { + if x != nil { + return x.Expr + } + return nil +} + +type Type struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Types that are assignable to TypeKind: + // + // *Type_Dyn + // *Type_Null + // *Type_Primitive + // *Type_Wrapper + // *Type_WellKnown + // *Type_ListType_ + // *Type_MapType_ + // *Type_Function + // *Type_MessageType + // *Type_TypeParam + // *Type_Type + // *Type_Error + // *Type_AbstractType_ + TypeKind isType_TypeKind `protobuf_oneof:"type_kind"` +} + +func (x *Type) Reset() { + *x = Type{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type) ProtoMessage() {} + +func (x *Type) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type.ProtoReflect.Descriptor instead. +func (*Type) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1} +} + +func (m *Type) GetTypeKind() isType_TypeKind { + if m != nil { + return m.TypeKind + } + return nil +} + +func (x *Type) GetDyn() *emptypb.Empty { + if x, ok := x.GetTypeKind().(*Type_Dyn); ok { + return x.Dyn + } + return nil +} + +func (x *Type) GetNull() structpb.NullValue { + if x, ok := x.GetTypeKind().(*Type_Null); ok { + return x.Null + } + return structpb.NullValue(0) +} + +func (x *Type) GetPrimitive() Type_PrimitiveType { + if x, ok := x.GetTypeKind().(*Type_Primitive); ok { + return x.Primitive + } + return Type_PRIMITIVE_TYPE_UNSPECIFIED +} + +func (x *Type) GetWrapper() Type_PrimitiveType { + if x, ok := x.GetTypeKind().(*Type_Wrapper); ok { + return x.Wrapper + } + return Type_PRIMITIVE_TYPE_UNSPECIFIED +} + +func (x *Type) GetWellKnown() Type_WellKnownType { + if x, ok := x.GetTypeKind().(*Type_WellKnown); ok { + return x.WellKnown + } + return Type_WELL_KNOWN_TYPE_UNSPECIFIED +} + +func (x *Type) GetListType() *Type_ListType { + if x, ok := x.GetTypeKind().(*Type_ListType_); ok { + return x.ListType + } + return nil +} + +func (x *Type) GetMapType() *Type_MapType { + if x, ok := x.GetTypeKind().(*Type_MapType_); ok { + return x.MapType + } + return nil +} + +func (x *Type) GetFunction() *Type_FunctionType { + if x, ok := x.GetTypeKind().(*Type_Function); ok { + return x.Function + } + return nil +} + +func (x *Type) GetMessageType() string { + if x, ok := x.GetTypeKind().(*Type_MessageType); ok { + return x.MessageType + } + return "" +} + +func (x *Type) GetTypeParam() string { + if x, ok := x.GetTypeKind().(*Type_TypeParam); ok { + return x.TypeParam + } + return "" +} + +func (x *Type) GetType() *Type { + if x, ok := x.GetTypeKind().(*Type_Type); ok { + return x.Type + } + return nil +} + +func (x *Type) GetError() *emptypb.Empty { + if x, ok := x.GetTypeKind().(*Type_Error); ok { + return x.Error + } + return nil +} + +func (x *Type) GetAbstractType() *Type_AbstractType { + if x, ok := x.GetTypeKind().(*Type_AbstractType_); ok { + return x.AbstractType + } + return nil +} + +type isType_TypeKind interface { + isType_TypeKind() +} + +type Type_Dyn struct { + Dyn *emptypb.Empty `protobuf:"bytes,1,opt,name=dyn,proto3,oneof"` +} + +type Type_Null struct { + Null structpb.NullValue `protobuf:"varint,2,opt,name=null,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Type_Primitive struct { + Primitive Type_PrimitiveType `protobuf:"varint,3,opt,name=primitive,proto3,enum=cel.expr.Type_PrimitiveType,oneof"` +} + +type Type_Wrapper struct { + Wrapper Type_PrimitiveType `protobuf:"varint,4,opt,name=wrapper,proto3,enum=cel.expr.Type_PrimitiveType,oneof"` +} + +type Type_WellKnown struct { + WellKnown Type_WellKnownType `protobuf:"varint,5,opt,name=well_known,json=wellKnown,proto3,enum=cel.expr.Type_WellKnownType,oneof"` +} + +type Type_ListType_ struct { + ListType *Type_ListType `protobuf:"bytes,6,opt,name=list_type,json=listType,proto3,oneof"` +} + +type Type_MapType_ struct { + MapType *Type_MapType `protobuf:"bytes,7,opt,name=map_type,json=mapType,proto3,oneof"` +} + +type Type_Function struct { + Function *Type_FunctionType `protobuf:"bytes,8,opt,name=function,proto3,oneof"` +} + +type Type_MessageType struct { + MessageType string `protobuf:"bytes,9,opt,name=message_type,json=messageType,proto3,oneof"` +} + +type Type_TypeParam struct { + TypeParam string `protobuf:"bytes,10,opt,name=type_param,json=typeParam,proto3,oneof"` +} + +type Type_Type struct { + Type *Type `protobuf:"bytes,11,opt,name=type,proto3,oneof"` +} + +type Type_Error struct { + Error *emptypb.Empty `protobuf:"bytes,12,opt,name=error,proto3,oneof"` +} + +type Type_AbstractType_ struct { + AbstractType *Type_AbstractType `protobuf:"bytes,14,opt,name=abstract_type,json=abstractType,proto3,oneof"` +} + +func (*Type_Dyn) isType_TypeKind() {} + +func (*Type_Null) isType_TypeKind() {} + +func (*Type_Primitive) isType_TypeKind() {} + +func (*Type_Wrapper) isType_TypeKind() {} + +func (*Type_WellKnown) isType_TypeKind() {} + +func (*Type_ListType_) isType_TypeKind() {} + +func (*Type_MapType_) isType_TypeKind() {} + +func (*Type_Function) isType_TypeKind() {} + +func (*Type_MessageType) isType_TypeKind() {} + +func (*Type_TypeParam) isType_TypeKind() {} + +func (*Type_Type) isType_TypeKind() {} + +func (*Type_Error) isType_TypeKind() {} + +func (*Type_AbstractType_) isType_TypeKind() {} + +type Decl struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + // Types that are assignable to DeclKind: + // + // *Decl_Ident + // *Decl_Function + DeclKind isDecl_DeclKind `protobuf_oneof:"decl_kind"` +} + +func (x *Decl) Reset() { + *x = Decl{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl) ProtoMessage() {} + +func (x *Decl) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl.ProtoReflect.Descriptor instead. +func (*Decl) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{2} +} + +func (x *Decl) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (m *Decl) GetDeclKind() isDecl_DeclKind { + if m != nil { + return m.DeclKind + } + return nil +} + +func (x *Decl) GetIdent() *Decl_IdentDecl { + if x, ok := x.GetDeclKind().(*Decl_Ident); ok { + return x.Ident + } + return nil +} + +func (x *Decl) GetFunction() *Decl_FunctionDecl { + if x, ok := x.GetDeclKind().(*Decl_Function); ok { + return x.Function + } + return nil +} + +type isDecl_DeclKind interface { + isDecl_DeclKind() +} + +type Decl_Ident struct { + Ident *Decl_IdentDecl `protobuf:"bytes,2,opt,name=ident,proto3,oneof"` +} + +type Decl_Function struct { + Function *Decl_FunctionDecl `protobuf:"bytes,3,opt,name=function,proto3,oneof"` +} + +func (*Decl_Ident) isDecl_DeclKind() {} + +func (*Decl_Function) isDecl_DeclKind() {} + +type Reference struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + OverloadId []string `protobuf:"bytes,3,rep,name=overload_id,json=overloadId,proto3" json:"overload_id,omitempty"` + Value *Constant `protobuf:"bytes,4,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *Reference) Reset() { + *x = Reference{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Reference) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Reference) ProtoMessage() {} + +func (x *Reference) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Reference.ProtoReflect.Descriptor instead. +func (*Reference) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{3} +} + +func (x *Reference) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (x *Reference) GetOverloadId() []string { + if x != nil { + return x.OverloadId + } + return nil +} + +func (x *Reference) GetValue() *Constant { + if x != nil { + return x.Value + } + return nil +} + +type Type_ListType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + ElemType *Type `protobuf:"bytes,1,opt,name=elem_type,json=elemType,proto3" json:"elem_type,omitempty"` +} + +func (x *Type_ListType) Reset() { + *x = Type_ListType{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[6] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_ListType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_ListType) ProtoMessage() {} + +func (x *Type_ListType) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[6] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_ListType.ProtoReflect.Descriptor instead. +func (*Type_ListType) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1, 0} +} + +func (x *Type_ListType) GetElemType() *Type { + if x != nil { + return x.ElemType + } + return nil +} + +type Type_MapType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + KeyType *Type `protobuf:"bytes,1,opt,name=key_type,json=keyType,proto3" json:"key_type,omitempty"` + ValueType *Type `protobuf:"bytes,2,opt,name=value_type,json=valueType,proto3" json:"value_type,omitempty"` +} + +func (x *Type_MapType) Reset() { + *x = Type_MapType{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[7] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_MapType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_MapType) ProtoMessage() {} + +func (x *Type_MapType) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[7] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_MapType.ProtoReflect.Descriptor instead. +func (*Type_MapType) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1, 1} +} + +func (x *Type_MapType) GetKeyType() *Type { + if x != nil { + return x.KeyType + } + return nil +} + +func (x *Type_MapType) GetValueType() *Type { + if x != nil { + return x.ValueType + } + return nil +} + +type Type_FunctionType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + ResultType *Type `protobuf:"bytes,1,opt,name=result_type,json=resultType,proto3" json:"result_type,omitempty"` + ArgTypes []*Type `protobuf:"bytes,2,rep,name=arg_types,json=argTypes,proto3" json:"arg_types,omitempty"` +} + +func (x *Type_FunctionType) Reset() { + *x = Type_FunctionType{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[8] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_FunctionType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_FunctionType) ProtoMessage() {} + +func (x *Type_FunctionType) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[8] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_FunctionType.ProtoReflect.Descriptor instead. +func (*Type_FunctionType) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1, 2} +} + +func (x *Type_FunctionType) GetResultType() *Type { + if x != nil { + return x.ResultType + } + return nil +} + +func (x *Type_FunctionType) GetArgTypes() []*Type { + if x != nil { + return x.ArgTypes + } + return nil +} + +type Type_AbstractType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + ParameterTypes []*Type `protobuf:"bytes,2,rep,name=parameter_types,json=parameterTypes,proto3" json:"parameter_types,omitempty"` +} + +func (x *Type_AbstractType) Reset() { + *x = Type_AbstractType{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[9] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_AbstractType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_AbstractType) ProtoMessage() {} + +func (x *Type_AbstractType) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[9] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_AbstractType.ProtoReflect.Descriptor instead. +func (*Type_AbstractType) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{1, 3} +} + +func (x *Type_AbstractType) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (x *Type_AbstractType) GetParameterTypes() []*Type { + if x != nil { + return x.ParameterTypes + } + return nil +} + +type Decl_IdentDecl struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Type *Type `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"` + Value *Constant `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"` + Doc string `protobuf:"bytes,3,opt,name=doc,proto3" json:"doc,omitempty"` +} + +func (x *Decl_IdentDecl) Reset() { + *x = Decl_IdentDecl{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[10] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl_IdentDecl) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl_IdentDecl) ProtoMessage() {} + +func (x *Decl_IdentDecl) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[10] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl_IdentDecl.ProtoReflect.Descriptor instead. +func (*Decl_IdentDecl) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{2, 0} +} + +func (x *Decl_IdentDecl) GetType() *Type { + if x != nil { + return x.Type + } + return nil +} + +func (x *Decl_IdentDecl) GetValue() *Constant { + if x != nil { + return x.Value + } + return nil +} + +func (x *Decl_IdentDecl) GetDoc() string { + if x != nil { + return x.Doc + } + return "" +} + +type Decl_FunctionDecl struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Overloads []*Decl_FunctionDecl_Overload `protobuf:"bytes,1,rep,name=overloads,proto3" json:"overloads,omitempty"` +} + +func (x *Decl_FunctionDecl) Reset() { + *x = Decl_FunctionDecl{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[11] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl_FunctionDecl) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl_FunctionDecl) ProtoMessage() {} + +func (x *Decl_FunctionDecl) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[11] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl_FunctionDecl.ProtoReflect.Descriptor instead. +func (*Decl_FunctionDecl) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{2, 1} +} + +func (x *Decl_FunctionDecl) GetOverloads() []*Decl_FunctionDecl_Overload { + if x != nil { + return x.Overloads + } + return nil +} + +type Decl_FunctionDecl_Overload struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + OverloadId string `protobuf:"bytes,1,opt,name=overload_id,json=overloadId,proto3" json:"overload_id,omitempty"` + Params []*Type `protobuf:"bytes,2,rep,name=params,proto3" json:"params,omitempty"` + TypeParams []string `protobuf:"bytes,3,rep,name=type_params,json=typeParams,proto3" json:"type_params,omitempty"` + ResultType *Type `protobuf:"bytes,4,opt,name=result_type,json=resultType,proto3" json:"result_type,omitempty"` + IsInstanceFunction bool `protobuf:"varint,5,opt,name=is_instance_function,json=isInstanceFunction,proto3" json:"is_instance_function,omitempty"` + Doc string `protobuf:"bytes,6,opt,name=doc,proto3" json:"doc,omitempty"` +} + +func (x *Decl_FunctionDecl_Overload) Reset() { + *x = Decl_FunctionDecl_Overload{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_checked_proto_msgTypes[12] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl_FunctionDecl_Overload) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl_FunctionDecl_Overload) ProtoMessage() {} + +func (x *Decl_FunctionDecl_Overload) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_checked_proto_msgTypes[12] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl_FunctionDecl_Overload.ProtoReflect.Descriptor instead. +func (*Decl_FunctionDecl_Overload) Descriptor() ([]byte, []int) { + return file_cel_expr_checked_proto_rawDescGZIP(), []int{2, 1, 0} +} + +func (x *Decl_FunctionDecl_Overload) GetOverloadId() string { + if x != nil { + return x.OverloadId + } + return "" +} + +func (x *Decl_FunctionDecl_Overload) GetParams() []*Type { + if x != nil { + return x.Params + } + return nil +} + +func (x *Decl_FunctionDecl_Overload) GetTypeParams() []string { + if x != nil { + return x.TypeParams + } + return nil +} + +func (x *Decl_FunctionDecl_Overload) GetResultType() *Type { + if x != nil { + return x.ResultType + } + return nil +} + +func (x *Decl_FunctionDecl_Overload) GetIsInstanceFunction() bool { + if x != nil { + return x.IsInstanceFunction + } + return false +} + +func (x *Decl_FunctionDecl_Overload) GetDoc() string { + if x != nil { + return x.Doc + } + return "" +} + +var File_cel_expr_checked_proto protoreflect.FileDescriptor + +var file_cel_expr_checked_proto_rawDesc = []byte{ + 0x0a, 0x16, 0x63, 0x65, 0x6c, 0x2f, 0x65, 0x78, 0x70, 0x72, 0x2f, 0x63, 0x68, 0x65, 0x63, 0x6b, + 0x65, 0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x08, 0x63, 0x65, 0x6c, 0x2e, 0x65, 0x78, + 0x70, 0x72, 0x1a, 0x15, 0x63, 0x65, 0x6c, 0x2f, 0x65, 0x78, 0x70, 0x72, 0x2f, 0x73, 0x79, 0x6e, + 0x74, 0x61, 0x78, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1b, 0x67, 0x6f, 0x6f, 0x67, 0x6c, + 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70, 0x74, 0x79, + 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1c, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, + 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x2e, 0x70, + 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xba, 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file_cel_expr_checked_proto_rawDescOnce sync.Once + file_cel_expr_checked_proto_rawDescData = file_cel_expr_checked_proto_rawDesc +) + +func file_cel_expr_checked_proto_rawDescGZIP() []byte { + file_cel_expr_checked_proto_rawDescOnce.Do(func() { + file_cel_expr_checked_proto_rawDescData = protoimpl.X.CompressGZIP(file_cel_expr_checked_proto_rawDescData) + }) + return file_cel_expr_checked_proto_rawDescData +} + +var file_cel_expr_checked_proto_enumTypes = make([]protoimpl.EnumInfo, 2) +var file_cel_expr_checked_proto_msgTypes = make([]protoimpl.MessageInfo, 13) +var file_cel_expr_checked_proto_goTypes = []interface{}{ + (Type_PrimitiveType)(0), // 0: cel.expr.Type.PrimitiveType + (Type_WellKnownType)(0), // 1: cel.expr.Type.WellKnownType + (*CheckedExpr)(nil), // 2: cel.expr.CheckedExpr + (*Type)(nil), // 3: cel.expr.Type + (*Decl)(nil), // 4: cel.expr.Decl + (*Reference)(nil), // 5: cel.expr.Reference + nil, // 6: cel.expr.CheckedExpr.ReferenceMapEntry + nil, // 7: cel.expr.CheckedExpr.TypeMapEntry + (*Type_ListType)(nil), // 8: cel.expr.Type.ListType + (*Type_MapType)(nil), // 9: cel.expr.Type.MapType + (*Type_FunctionType)(nil), // 10: cel.expr.Type.FunctionType + (*Type_AbstractType)(nil), // 11: cel.expr.Type.AbstractType + (*Decl_IdentDecl)(nil), // 12: cel.expr.Decl.IdentDecl + (*Decl_FunctionDecl)(nil), // 13: cel.expr.Decl.FunctionDecl + (*Decl_FunctionDecl_Overload)(nil), // 14: cel.expr.Decl.FunctionDecl.Overload + (*SourceInfo)(nil), // 15: cel.expr.SourceInfo + (*Expr)(nil), // 16: cel.expr.Expr + (*emptypb.Empty)(nil), // 17: google.protobuf.Empty + (structpb.NullValue)(0), // 18: google.protobuf.NullValue + (*Constant)(nil), // 19: cel.expr.Constant +} +var file_cel_expr_checked_proto_depIdxs = []int32{ + 6, // 0: cel.expr.CheckedExpr.reference_map:type_name -> cel.expr.CheckedExpr.ReferenceMapEntry + 7, // 1: cel.expr.CheckedExpr.type_map:type_name -> cel.expr.CheckedExpr.TypeMapEntry + 15, // 2: cel.expr.CheckedExpr.source_info:type_name -> cel.expr.SourceInfo + 16, // 3: cel.expr.CheckedExpr.expr:type_name -> cel.expr.Expr + 17, // 4: cel.expr.Type.dyn:type_name -> google.protobuf.Empty + 18, // 5: cel.expr.Type.null:type_name -> google.protobuf.NullValue + 0, // 6: cel.expr.Type.primitive:type_name -> cel.expr.Type.PrimitiveType + 0, // 7: cel.expr.Type.wrapper:type_name -> cel.expr.Type.PrimitiveType + 1, // 8: cel.expr.Type.well_known:type_name -> cel.expr.Type.WellKnownType + 8, // 9: cel.expr.Type.list_type:type_name -> cel.expr.Type.ListType + 9, // 10: cel.expr.Type.map_type:type_name -> cel.expr.Type.MapType + 10, // 11: cel.expr.Type.function:type_name -> cel.expr.Type.FunctionType + 3, // 12: cel.expr.Type.type:type_name -> cel.expr.Type + 17, // 13: cel.expr.Type.error:type_name -> google.protobuf.Empty + 11, // 14: cel.expr.Type.abstract_type:type_name -> cel.expr.Type.AbstractType + 12, // 15: cel.expr.Decl.ident:type_name -> cel.expr.Decl.IdentDecl + 13, // 16: cel.expr.Decl.function:type_name -> cel.expr.Decl.FunctionDecl + 19, // 17: cel.expr.Reference.value:type_name -> cel.expr.Constant + 5, // 18: cel.expr.CheckedExpr.ReferenceMapEntry.value:type_name -> cel.expr.Reference + 3, // 19: cel.expr.CheckedExpr.TypeMapEntry.value:type_name -> cel.expr.Type + 3, // 20: cel.expr.Type.ListType.elem_type:type_name -> cel.expr.Type + 3, // 21: cel.expr.Type.MapType.key_type:type_name -> cel.expr.Type + 3, // 22: cel.expr.Type.MapType.value_type:type_name -> cel.expr.Type + 3, // 23: cel.expr.Type.FunctionType.result_type:type_name -> cel.expr.Type + 3, // 24: cel.expr.Type.FunctionType.arg_types:type_name -> cel.expr.Type + 3, // 25: cel.expr.Type.AbstractType.parameter_types:type_name -> cel.expr.Type + 3, // 26: cel.expr.Decl.IdentDecl.type:type_name -> cel.expr.Type + 19, // 27: cel.expr.Decl.IdentDecl.value:type_name -> cel.expr.Constant + 14, // 28: cel.expr.Decl.FunctionDecl.overloads:type_name -> cel.expr.Decl.FunctionDecl.Overload + 3, // 29: cel.expr.Decl.FunctionDecl.Overload.params:type_name -> cel.expr.Type + 3, // 30: cel.expr.Decl.FunctionDecl.Overload.result_type:type_name -> cel.expr.Type + 31, // [31:31] is the sub-list for method output_type + 31, // [31:31] is the sub-list for method input_type + 31, // [31:31] is the sub-list for extension type_name + 31, // [31:31] is the sub-list for extension extendee + 0, // [0:31] is the sub-list for field type_name +} + +func init() { file_cel_expr_checked_proto_init() } +func file_cel_expr_checked_proto_init() { + if File_cel_expr_checked_proto != nil { + return + } + file_cel_expr_syntax_proto_init() + if !protoimpl.UnsafeEnabled { + file_cel_expr_checked_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*CheckedExpr); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Reference); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_ListType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_MapType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_FunctionType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_AbstractType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl_IdentDecl); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl_FunctionDecl); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_checked_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl_FunctionDecl_Overload); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_cel_expr_checked_proto_msgTypes[1].OneofWrappers = []interface{}{ + (*Type_Dyn)(nil), + (*Type_Null)(nil), + (*Type_Primitive)(nil), + (*Type_Wrapper)(nil), + (*Type_WellKnown)(nil), + (*Type_ListType_)(nil), + (*Type_MapType_)(nil), + (*Type_Function)(nil), + (*Type_MessageType)(nil), + (*Type_TypeParam)(nil), + (*Type_Type)(nil), + (*Type_Error)(nil), + (*Type_AbstractType_)(nil), + } + file_cel_expr_checked_proto_msgTypes[2].OneofWrappers = []interface{}{ + (*Decl_Ident)(nil), + (*Decl_Function)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_cel_expr_checked_proto_rawDesc, + NumEnums: 2, + NumMessages: 13, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_cel_expr_checked_proto_goTypes, + DependencyIndexes: file_cel_expr_checked_proto_depIdxs, + EnumInfos: file_cel_expr_checked_proto_enumTypes, + MessageInfos: file_cel_expr_checked_proto_msgTypes, + }.Build() + File_cel_expr_checked_proto = out.File + file_cel_expr_checked_proto_rawDesc = nil + file_cel_expr_checked_proto_goTypes = nil + file_cel_expr_checked_proto_depIdxs = nil +} diff --git a/vendor/cel.dev/expr/cloudbuild.yaml b/vendor/cel.dev/expr/cloudbuild.yaml new file mode 100644 index 0000000000..e3e533a04a --- /dev/null +++ b/vendor/cel.dev/expr/cloudbuild.yaml @@ -0,0 +1,9 @@ +steps: +- name: 'gcr.io/cloud-builders/bazel:7.3.2' + entrypoint: bazel + args: ['build', '...'] + id: bazel-build + waitFor: ['-'] +timeout: 15m +options: + machineType: 'N1_HIGHCPU_32' diff --git a/vendor/cel.dev/expr/eval.pb.go b/vendor/cel.dev/expr/eval.pb.go new file mode 100644 index 0000000000..a7aae0900c --- /dev/null +++ b/vendor/cel.dev/expr/eval.pb.go @@ -0,0 +1,487 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.36.3 +// protoc v5.27.1 +// source: cel/expr/eval.proto + +package expr + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + anypb "google.golang.org/protobuf/types/known/anypb" + reflect "reflect" + sync "sync" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +type EvalState struct { + state protoimpl.MessageState `protogen:"open.v1"` + Values []*ExprValue `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` + Results []*EvalState_Result `protobuf:"bytes,3,rep,name=results,proto3" json:"results,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *EvalState) Reset() { + *x = EvalState{} + mi := &file_cel_expr_eval_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *EvalState) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*EvalState) ProtoMessage() {} + +func (x *EvalState) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_eval_proto_msgTypes[0] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use EvalState.ProtoReflect.Descriptor instead. +func (*EvalState) Descriptor() ([]byte, []int) { + return file_cel_expr_eval_proto_rawDescGZIP(), []int{0} +} + +func (x *EvalState) GetValues() []*ExprValue { + if x != nil { + return x.Values + } + return nil +} + +func (x *EvalState) GetResults() []*EvalState_Result { + if x != nil { + return x.Results + } + return nil +} + +type ExprValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // Types that are valid to be assigned to Kind: + // + // *ExprValue_Value + // *ExprValue_Error + // *ExprValue_Unknown + Kind isExprValue_Kind `protobuf_oneof:"kind"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *ExprValue) Reset() { + *x = ExprValue{} + mi := &file_cel_expr_eval_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *ExprValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ExprValue) ProtoMessage() {} + +func (x *ExprValue) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_eval_proto_msgTypes[1] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ExprValue.ProtoReflect.Descriptor instead. +func (*ExprValue) Descriptor() ([]byte, []int) { + return file_cel_expr_eval_proto_rawDescGZIP(), []int{1} +} + +func (x *ExprValue) GetKind() isExprValue_Kind { + if x != nil { + return x.Kind + } + return nil +} + +func (x *ExprValue) GetValue() *Value { + if x != nil { + if x, ok := x.Kind.(*ExprValue_Value); ok { + return x.Value + } + } + return nil +} + +func (x *ExprValue) GetError() *ErrorSet { + if x != nil { + if x, ok := x.Kind.(*ExprValue_Error); ok { + return x.Error + } + } + return nil +} + +func (x *ExprValue) GetUnknown() *UnknownSet { + if x != nil { + if x, ok := x.Kind.(*ExprValue_Unknown); ok { + return x.Unknown + } + } + return nil +} + +type isExprValue_Kind interface { + isExprValue_Kind() +} + +type ExprValue_Value struct { + Value *Value `protobuf:"bytes,1,opt,name=value,proto3,oneof"` +} + +type ExprValue_Error struct { + Error *ErrorSet `protobuf:"bytes,2,opt,name=error,proto3,oneof"` +} + +type ExprValue_Unknown struct { + Unknown *UnknownSet `protobuf:"bytes,3,opt,name=unknown,proto3,oneof"` +} + +func (*ExprValue_Value) isExprValue_Kind() {} + +func (*ExprValue_Error) isExprValue_Kind() {} + +func (*ExprValue_Unknown) isExprValue_Kind() {} + +type ErrorSet struct { + state protoimpl.MessageState `protogen:"open.v1"` + Errors []*Status `protobuf:"bytes,1,rep,name=errors,proto3" json:"errors,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *ErrorSet) Reset() { + *x = ErrorSet{} + mi := &file_cel_expr_eval_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *ErrorSet) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ErrorSet) ProtoMessage() {} + +func (x *ErrorSet) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_eval_proto_msgTypes[2] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ErrorSet.ProtoReflect.Descriptor instead. +func (*ErrorSet) Descriptor() ([]byte, []int) { + return file_cel_expr_eval_proto_rawDescGZIP(), []int{2} +} + +func (x *ErrorSet) GetErrors() []*Status { + if x != nil { + return x.Errors + } + return nil +} + +type Status struct { + state protoimpl.MessageState `protogen:"open.v1"` + Code int32 `protobuf:"varint,1,opt,name=code,proto3" json:"code,omitempty"` + Message string `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"` + Details []*anypb.Any `protobuf:"bytes,3,rep,name=details,proto3" json:"details,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *Status) Reset() { + *x = Status{} + mi := &file_cel_expr_eval_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *Status) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Status) ProtoMessage() {} + +func (x *Status) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_eval_proto_msgTypes[3] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Status.ProtoReflect.Descriptor instead. +func (*Status) Descriptor() ([]byte, []int) { + return file_cel_expr_eval_proto_rawDescGZIP(), []int{3} +} + +func (x *Status) GetCode() int32 { + if x != nil { + return x.Code + } + return 0 +} + +func (x *Status) GetMessage() string { + if x != nil { + return x.Message + } + return "" +} + +func (x *Status) GetDetails() []*anypb.Any { + if x != nil { + return x.Details + } + return nil +} + +type UnknownSet struct { + state protoimpl.MessageState `protogen:"open.v1"` + Exprs []int64 `protobuf:"varint,1,rep,packed,name=exprs,proto3" json:"exprs,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *UnknownSet) Reset() { + *x = UnknownSet{} + mi := &file_cel_expr_eval_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *UnknownSet) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*UnknownSet) ProtoMessage() {} + +func (x *UnknownSet) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_eval_proto_msgTypes[4] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use UnknownSet.ProtoReflect.Descriptor instead. +func (*UnknownSet) Descriptor() ([]byte, []int) { + return file_cel_expr_eval_proto_rawDescGZIP(), []int{4} +} + +func (x *UnknownSet) GetExprs() []int64 { + if x != nil { + return x.Exprs + } + return nil +} + +type EvalState_Result struct { + state protoimpl.MessageState `protogen:"open.v1"` + Expr int64 `protobuf:"varint,1,opt,name=expr,proto3" json:"expr,omitempty"` 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(*UnknownSet)(nil), // 4: cel.expr.UnknownSet + (*EvalState_Result)(nil), // 5: cel.expr.EvalState.Result + (*Value)(nil), // 6: cel.expr.Value + (*anypb.Any)(nil), // 7: google.protobuf.Any +} +var file_cel_expr_eval_proto_depIdxs = []int32{ + 1, // 0: cel.expr.EvalState.values:type_name -> cel.expr.ExprValue + 5, // 1: cel.expr.EvalState.results:type_name -> cel.expr.EvalState.Result + 6, // 2: cel.expr.ExprValue.value:type_name -> cel.expr.Value + 2, // 3: cel.expr.ExprValue.error:type_name -> cel.expr.ErrorSet + 4, // 4: cel.expr.ExprValue.unknown:type_name -> cel.expr.UnknownSet + 3, // 5: cel.expr.ErrorSet.errors:type_name -> cel.expr.Status + 7, // 6: cel.expr.Status.details:type_name -> google.protobuf.Any + 7, // [7:7] is the sub-list for method output_type + 7, // [7:7] is the sub-list for method input_type + 7, // [7:7] is the sub-list for extension type_name + 7, // [7:7] is the sub-list for extension extendee + 0, // [0:7] is the sub-list for field type_name +} + +func init() { file_cel_expr_eval_proto_init() } +func file_cel_expr_eval_proto_init() { + if File_cel_expr_eval_proto != nil { + return + } + file_cel_expr_value_proto_init() + file_cel_expr_eval_proto_msgTypes[1].OneofWrappers = []any{ + (*ExprValue_Value)(nil), + (*ExprValue_Error)(nil), + (*ExprValue_Unknown)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_cel_expr_eval_proto_rawDesc, + NumEnums: 0, + NumMessages: 6, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_cel_expr_eval_proto_goTypes, + DependencyIndexes: file_cel_expr_eval_proto_depIdxs, + MessageInfos: file_cel_expr_eval_proto_msgTypes, + }.Build() + File_cel_expr_eval_proto = out.File + file_cel_expr_eval_proto_rawDesc = nil + file_cel_expr_eval_proto_goTypes = nil + file_cel_expr_eval_proto_depIdxs = nil +} diff --git a/vendor/cel.dev/expr/explain.pb.go b/vendor/cel.dev/expr/explain.pb.go new file mode 100644 index 0000000000..79fd5443b9 --- /dev/null +++ b/vendor/cel.dev/expr/explain.pb.go @@ -0,0 +1,236 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.28.1 +// protoc v3.21.5 +// source: cel/expr/explain.proto + +package expr + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + reflect "reflect" + sync "sync" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// Deprecated: Do not use. +type Explain struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Values []*Value `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` + ExprSteps []*Explain_ExprStep `protobuf:"bytes,2,rep,name=expr_steps,json=exprSteps,proto3" json:"expr_steps,omitempty"` +} + +func (x *Explain) Reset() { + *x = Explain{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_explain_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Explain) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Explain) ProtoMessage() {} + +func (x *Explain) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_explain_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Explain.ProtoReflect.Descriptor instead. +func (*Explain) Descriptor() ([]byte, []int) { + return file_cel_expr_explain_proto_rawDescGZIP(), []int{0} +} + +func (x *Explain) GetValues() []*Value { + if x != nil { + return x.Values + } + return nil +} + +func (x *Explain) GetExprSteps() []*Explain_ExprStep { + if x != nil { + return x.ExprSteps + } + return nil +} + +type Explain_ExprStep struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"` + ValueIndex int32 `protobuf:"varint,2,opt,name=value_index,json=valueIndex,proto3" json:"value_index,omitempty"` +} + +func (x *Explain_ExprStep) Reset() { + *x = Explain_ExprStep{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_explain_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Explain_ExprStep) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Explain_ExprStep) ProtoMessage() {} + +func (x *Explain_ExprStep) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_explain_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Explain_ExprStep.ProtoReflect.Descriptor instead. +func (*Explain_ExprStep) Descriptor() ([]byte, []int) { + return file_cel_expr_explain_proto_rawDescGZIP(), []int{0, 0} +} + +func (x *Explain_ExprStep) GetId() int64 { + if x != nil { + return x.Id + } + return 0 +} + +func (x *Explain_ExprStep) GetValueIndex() int32 { + if x != nil { + return x.ValueIndex + } + return 0 +} + +var File_cel_expr_explain_proto protoreflect.FileDescriptor + +var file_cel_expr_explain_proto_rawDesc = []byte{ + 0x0a, 0x16, 0x63, 0x65, 0x6c, 0x2f, 0x65, 0x78, 0x70, 0x72, 0x2f, 0x65, 0x78, 0x70, 0x6c, 0x61, + 0x69, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x08, 0x63, 0x65, 0x6c, 0x2e, 0x65, 0x78, + 0x70, 0x72, 0x1a, 0x14, 0x63, 0x65, 0x6c, 0x2f, 0x65, 0x78, 0x70, 0x72, 0x2f, 0x76, 0x61, 0x6c, + 0x75, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xae, 0x01, 0x0a, 0x07, 0x45, 0x78, 0x70, + 0x6c, 0x61, 0x69, 0x6e, 0x12, 0x27, 0x0a, 0x06, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x73, 0x18, 0x01, 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0x6c, 0x2e, 0x65, 0x78, 0x70, 0x72, 0x42, 0x0c, 0x45, 0x78, 0x70, 0x6c, 0x61, + 0x69, 0x6e, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x0c, 0x63, 0x65, 0x6c, 0x2e, 0x64, + 0x65, 0x76, 0x2f, 0x65, 0x78, 0x70, 0x72, 0xf8, 0x01, 0x01, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, + 0x6f, 0x33, +} + +var ( + file_cel_expr_explain_proto_rawDescOnce sync.Once + file_cel_expr_explain_proto_rawDescData = file_cel_expr_explain_proto_rawDesc +) + +func file_cel_expr_explain_proto_rawDescGZIP() []byte { + file_cel_expr_explain_proto_rawDescOnce.Do(func() { + file_cel_expr_explain_proto_rawDescData = protoimpl.X.CompressGZIP(file_cel_expr_explain_proto_rawDescData) + }) + return file_cel_expr_explain_proto_rawDescData +} + +var file_cel_expr_explain_proto_msgTypes = make([]protoimpl.MessageInfo, 2) +var file_cel_expr_explain_proto_goTypes = []interface{}{ + (*Explain)(nil), // 0: cel.expr.Explain + (*Explain_ExprStep)(nil), // 1: cel.expr.Explain.ExprStep + (*Value)(nil), // 2: cel.expr.Value +} +var file_cel_expr_explain_proto_depIdxs = []int32{ + 2, // 0: cel.expr.Explain.values:type_name -> cel.expr.Value + 1, // 1: cel.expr.Explain.expr_steps:type_name -> cel.expr.Explain.ExprStep + 2, // [2:2] is the sub-list for method output_type + 2, // [2:2] is the sub-list for method input_type + 2, // [2:2] is the sub-list for extension type_name + 2, // [2:2] is the sub-list for extension extendee + 0, // [0:2] is the sub-list for field type_name +} + +func init() { file_cel_expr_explain_proto_init() } +func file_cel_expr_explain_proto_init() { + if File_cel_expr_explain_proto != nil { + return + } + file_cel_expr_value_proto_init() + if !protoimpl.UnsafeEnabled { + file_cel_expr_explain_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Explain); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_explain_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Explain_ExprStep); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_cel_expr_explain_proto_rawDesc, + NumEnums: 0, + NumMessages: 2, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_cel_expr_explain_proto_goTypes, + DependencyIndexes: file_cel_expr_explain_proto_depIdxs, + MessageInfos: file_cel_expr_explain_proto_msgTypes, + }.Build() + File_cel_expr_explain_proto = out.File + file_cel_expr_explain_proto_rawDesc = nil + file_cel_expr_explain_proto_goTypes = nil + file_cel_expr_explain_proto_depIdxs = nil +} diff --git a/vendor/cel.dev/expr/regen_go_proto.sh b/vendor/cel.dev/expr/regen_go_proto.sh new file mode 100644 index 0000000000..fdcbb3ce25 --- /dev/null +++ b/vendor/cel.dev/expr/regen_go_proto.sh @@ -0,0 +1,9 @@ +#!/bin/sh +bazel build //proto/cel/expr/conformance/... +files=($(bazel aquery 'kind(proto, //proto/cel/expr/conformance/...)' | grep Outputs | grep "[.]pb[.]go" | sed 's/Outputs: \[//' | sed 's/\]//' | tr "," "\n")) +for src in ${files[@]}; +do + dst=$(echo $src | sed 's/\(.*\/cel.dev\/expr\/\(.*\)\)/\2/') + echo "copying $dst" + $(cp $src $dst) +done diff --git a/vendor/cel.dev/expr/regen_go_proto_canonical_protos.sh b/vendor/cel.dev/expr/regen_go_proto_canonical_protos.sh new file mode 100644 index 0000000000..9a13479e40 --- /dev/null +++ b/vendor/cel.dev/expr/regen_go_proto_canonical_protos.sh @@ -0,0 +1,10 @@ +#!/usr/bin/env bash +bazel build //proto/cel/expr:all + +rm -vf ./*.pb.go + +files=( $(bazel cquery //proto/cel/expr:expr_go_proto --output=starlark --starlark:expr="'\n'.join([f.path for f in target.output_groups.go_generated_srcs.to_list()])") ) +for src in "${files[@]}"; +do + cp -v "${src}" ./ +done diff --git a/vendor/cel.dev/expr/syntax.pb.go b/vendor/cel.dev/expr/syntax.pb.go new file mode 100644 index 0000000000..48a952872e --- /dev/null +++ b/vendor/cel.dev/expr/syntax.pb.go @@ -0,0 +1,1633 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.28.1 +// protoc v3.21.5 +// source: cel/expr/syntax.proto + +package expr + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + durationpb "google.golang.org/protobuf/types/known/durationpb" + structpb "google.golang.org/protobuf/types/known/structpb" + timestamppb "google.golang.org/protobuf/types/known/timestamppb" + reflect "reflect" + sync "sync" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +type SourceInfo_Extension_Component int32 + +const ( + SourceInfo_Extension_COMPONENT_UNSPECIFIED SourceInfo_Extension_Component = 0 + SourceInfo_Extension_COMPONENT_PARSER SourceInfo_Extension_Component = 1 + SourceInfo_Extension_COMPONENT_TYPE_CHECKER SourceInfo_Extension_Component = 2 + SourceInfo_Extension_COMPONENT_RUNTIME SourceInfo_Extension_Component = 3 +) + +// Enum value maps for SourceInfo_Extension_Component. +var ( + SourceInfo_Extension_Component_name = map[int32]string{ + 0: "COMPONENT_UNSPECIFIED", + 1: "COMPONENT_PARSER", + 2: "COMPONENT_TYPE_CHECKER", + 3: "COMPONENT_RUNTIME", + } + SourceInfo_Extension_Component_value = map[string]int32{ + "COMPONENT_UNSPECIFIED": 0, + "COMPONENT_PARSER": 1, + "COMPONENT_TYPE_CHECKER": 2, + "COMPONENT_RUNTIME": 3, + } +) + +func (x SourceInfo_Extension_Component) Enum() *SourceInfo_Extension_Component { + p := new(SourceInfo_Extension_Component) + *p = x + return p +} + +func (x SourceInfo_Extension_Component) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (SourceInfo_Extension_Component) Descriptor() protoreflect.EnumDescriptor { + return file_cel_expr_syntax_proto_enumTypes[0].Descriptor() +} + +func (SourceInfo_Extension_Component) Type() protoreflect.EnumType { + return &file_cel_expr_syntax_proto_enumTypes[0] +} + +func (x SourceInfo_Extension_Component) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use SourceInfo_Extension_Component.Descriptor instead. +func (SourceInfo_Extension_Component) EnumDescriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{3, 2, 0} +} + +type ParsedExpr struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Expr *Expr `protobuf:"bytes,2,opt,name=expr,proto3" json:"expr,omitempty"` + SourceInfo *SourceInfo `protobuf:"bytes,3,opt,name=source_info,json=sourceInfo,proto3" json:"source_info,omitempty"` +} + +func (x *ParsedExpr) Reset() { + *x = ParsedExpr{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ParsedExpr) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ParsedExpr) ProtoMessage() {} + +func (x *ParsedExpr) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ParsedExpr.ProtoReflect.Descriptor instead. +func (*ParsedExpr) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{0} +} + +func (x *ParsedExpr) GetExpr() *Expr { + if x != nil { + return x.Expr + } + return nil +} + +func (x *ParsedExpr) GetSourceInfo() *SourceInfo { + if x != nil { + return x.SourceInfo + } + return nil +} + +type Expr struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Id int64 `protobuf:"varint,2,opt,name=id,proto3" json:"id,omitempty"` + // Types that are assignable to ExprKind: + // + // *Expr_ConstExpr + // *Expr_IdentExpr + // *Expr_SelectExpr + // *Expr_CallExpr + // *Expr_ListExpr + // *Expr_StructExpr + // *Expr_ComprehensionExpr + ExprKind isExpr_ExprKind `protobuf_oneof:"expr_kind"` +} + +func (x *Expr) Reset() { + *x = Expr{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr) ProtoMessage() {} + +func (x *Expr) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr.ProtoReflect.Descriptor instead. +func (*Expr) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1} +} + +func (x *Expr) GetId() int64 { + if x != nil { + return x.Id + } + return 0 +} + +func (m *Expr) GetExprKind() isExpr_ExprKind { + if m != nil { + return m.ExprKind + } + return nil +} + +func (x *Expr) GetConstExpr() *Constant { + if x, ok := x.GetExprKind().(*Expr_ConstExpr); ok { + return x.ConstExpr + } + return nil +} + +func (x *Expr) GetIdentExpr() *Expr_Ident { + if x, ok := x.GetExprKind().(*Expr_IdentExpr); ok { + return x.IdentExpr + } + return nil +} + +func (x *Expr) GetSelectExpr() *Expr_Select { + if x, ok := x.GetExprKind().(*Expr_SelectExpr); ok { + return x.SelectExpr + } + return nil +} + +func (x *Expr) GetCallExpr() *Expr_Call { + if x, ok := x.GetExprKind().(*Expr_CallExpr); ok { + return x.CallExpr + } + return nil +} + +func (x *Expr) GetListExpr() *Expr_CreateList { + if x, ok := x.GetExprKind().(*Expr_ListExpr); ok { + return x.ListExpr + } + return nil +} + +func (x *Expr) GetStructExpr() *Expr_CreateStruct { + if x, ok := x.GetExprKind().(*Expr_StructExpr); ok { + return x.StructExpr + } + return nil +} + +func (x *Expr) GetComprehensionExpr() *Expr_Comprehension { + if x, ok := x.GetExprKind().(*Expr_ComprehensionExpr); ok { + return x.ComprehensionExpr + } + return nil +} + +type isExpr_ExprKind interface { + isExpr_ExprKind() +} + +type Expr_ConstExpr struct { + ConstExpr *Constant `protobuf:"bytes,3,opt,name=const_expr,json=constExpr,proto3,oneof"` +} + +type Expr_IdentExpr struct { + IdentExpr *Expr_Ident `protobuf:"bytes,4,opt,name=ident_expr,json=identExpr,proto3,oneof"` +} + +type Expr_SelectExpr struct { + SelectExpr *Expr_Select `protobuf:"bytes,5,opt,name=select_expr,json=selectExpr,proto3,oneof"` +} + +type Expr_CallExpr struct { + CallExpr *Expr_Call `protobuf:"bytes,6,opt,name=call_expr,json=callExpr,proto3,oneof"` +} + +type Expr_ListExpr struct { + ListExpr *Expr_CreateList `protobuf:"bytes,7,opt,name=list_expr,json=listExpr,proto3,oneof"` +} + +type Expr_StructExpr struct { + StructExpr *Expr_CreateStruct `protobuf:"bytes,8,opt,name=struct_expr,json=structExpr,proto3,oneof"` +} + +type Expr_ComprehensionExpr struct { + ComprehensionExpr *Expr_Comprehension `protobuf:"bytes,9,opt,name=comprehension_expr,json=comprehensionExpr,proto3,oneof"` +} + +func (*Expr_ConstExpr) isExpr_ExprKind() {} + +func (*Expr_IdentExpr) isExpr_ExprKind() {} + +func (*Expr_SelectExpr) isExpr_ExprKind() {} + +func (*Expr_CallExpr) isExpr_ExprKind() {} + +func (*Expr_ListExpr) isExpr_ExprKind() {} + +func (*Expr_StructExpr) isExpr_ExprKind() {} + +func (*Expr_ComprehensionExpr) isExpr_ExprKind() {} + +type Constant struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Types that are assignable to ConstantKind: + // + // *Constant_NullValue + // *Constant_BoolValue + // *Constant_Int64Value + // *Constant_Uint64Value + // *Constant_DoubleValue + // *Constant_StringValue + // *Constant_BytesValue + // *Constant_DurationValue + // *Constant_TimestampValue + ConstantKind isConstant_ConstantKind `protobuf_oneof:"constant_kind"` +} + +func (x *Constant) Reset() { + *x = Constant{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Constant) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Constant) ProtoMessage() {} + +func (x *Constant) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Constant.ProtoReflect.Descriptor instead. +func (*Constant) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{2} +} + +func (m *Constant) GetConstantKind() isConstant_ConstantKind { + if m != nil { + return m.ConstantKind + } + return nil +} + +func (x *Constant) GetNullValue() structpb.NullValue { + if x, ok := x.GetConstantKind().(*Constant_NullValue); ok { + return x.NullValue + } + return structpb.NullValue(0) +} + +func (x *Constant) GetBoolValue() bool { + if x, ok := x.GetConstantKind().(*Constant_BoolValue); ok { + return x.BoolValue + } + return false +} + +func (x *Constant) GetInt64Value() int64 { + if x, ok := x.GetConstantKind().(*Constant_Int64Value); ok { + return x.Int64Value + } + return 0 +} + +func (x *Constant) GetUint64Value() uint64 { + if x, ok := x.GetConstantKind().(*Constant_Uint64Value); ok { + return x.Uint64Value + } + return 0 +} + +func (x *Constant) GetDoubleValue() float64 { + if x, ok := x.GetConstantKind().(*Constant_DoubleValue); ok { + return x.DoubleValue + } + return 0 +} + +func (x *Constant) GetStringValue() string { + if x, ok := x.GetConstantKind().(*Constant_StringValue); ok { + return x.StringValue + } + return "" +} + +func (x *Constant) GetBytesValue() []byte { + if x, ok := x.GetConstantKind().(*Constant_BytesValue); ok { + return x.BytesValue + } + return nil +} + +// Deprecated: Do not use. +func (x *Constant) GetDurationValue() *durationpb.Duration { + if x, ok := x.GetConstantKind().(*Constant_DurationValue); ok { + return x.DurationValue + } + return nil +} + +// Deprecated: Do not use. +func (x *Constant) GetTimestampValue() *timestamppb.Timestamp { + if x, ok := x.GetConstantKind().(*Constant_TimestampValue); ok { + return x.TimestampValue + } + return nil +} + +type isConstant_ConstantKind interface { + isConstant_ConstantKind() +} + +type Constant_NullValue struct { + NullValue structpb.NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Constant_BoolValue struct { + BoolValue bool `protobuf:"varint,2,opt,name=bool_value,json=boolValue,proto3,oneof"` +} + +type Constant_Int64Value struct { + Int64Value int64 `protobuf:"varint,3,opt,name=int64_value,json=int64Value,proto3,oneof"` +} + +type Constant_Uint64Value struct { + Uint64Value uint64 `protobuf:"varint,4,opt,name=uint64_value,json=uint64Value,proto3,oneof"` +} + +type Constant_DoubleValue struct { + DoubleValue float64 `protobuf:"fixed64,5,opt,name=double_value,json=doubleValue,proto3,oneof"` +} + +type Constant_StringValue struct { + StringValue string `protobuf:"bytes,6,opt,name=string_value,json=stringValue,proto3,oneof"` +} + +type Constant_BytesValue struct { + BytesValue []byte `protobuf:"bytes,7,opt,name=bytes_value,json=bytesValue,proto3,oneof"` +} + +type Constant_DurationValue struct { + // Deprecated: Do not use. + DurationValue *durationpb.Duration `protobuf:"bytes,8,opt,name=duration_value,json=durationValue,proto3,oneof"` +} + +type Constant_TimestampValue struct { + // Deprecated: Do not use. + TimestampValue *timestamppb.Timestamp `protobuf:"bytes,9,opt,name=timestamp_value,json=timestampValue,proto3,oneof"` +} + +func (*Constant_NullValue) isConstant_ConstantKind() {} + +func (*Constant_BoolValue) isConstant_ConstantKind() {} + +func (*Constant_Int64Value) isConstant_ConstantKind() {} + +func (*Constant_Uint64Value) isConstant_ConstantKind() {} + +func (*Constant_DoubleValue) isConstant_ConstantKind() {} + +func (*Constant_StringValue) isConstant_ConstantKind() {} + +func (*Constant_BytesValue) isConstant_ConstantKind() {} + +func (*Constant_DurationValue) isConstant_ConstantKind() {} + +func (*Constant_TimestampValue) isConstant_ConstantKind() {} + +type SourceInfo struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + SyntaxVersion string `protobuf:"bytes,1,opt,name=syntax_version,json=syntaxVersion,proto3" json:"syntax_version,omitempty"` + Location string `protobuf:"bytes,2,opt,name=location,proto3" json:"location,omitempty"` + LineOffsets []int32 `protobuf:"varint,3,rep,packed,name=line_offsets,json=lineOffsets,proto3" json:"line_offsets,omitempty"` + Positions map[int64]int32 `protobuf:"bytes,4,rep,name=positions,proto3" json:"positions,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"` + MacroCalls map[int64]*Expr `protobuf:"bytes,5,rep,name=macro_calls,json=macroCalls,proto3" json:"macro_calls,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + Extensions []*SourceInfo_Extension `protobuf:"bytes,6,rep,name=extensions,proto3" json:"extensions,omitempty"` +} + +func (x *SourceInfo) Reset() { + *x = SourceInfo{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourceInfo) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourceInfo) ProtoMessage() {} + +func (x *SourceInfo) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourceInfo.ProtoReflect.Descriptor instead. +func (*SourceInfo) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{3} +} + +func (x *SourceInfo) GetSyntaxVersion() string { + if x != nil { + return x.SyntaxVersion + } + return "" +} + +func (x *SourceInfo) GetLocation() string { + if x != nil { + return x.Location + } + return "" +} + +func (x *SourceInfo) GetLineOffsets() []int32 { + if x != nil { + return x.LineOffsets + } + return nil +} + +func (x *SourceInfo) GetPositions() map[int64]int32 { + if x != nil { + return x.Positions + } + return nil +} + +func (x *SourceInfo) GetMacroCalls() map[int64]*Expr { + if x != nil { + return x.MacroCalls + } + return nil +} + +func (x *SourceInfo) GetExtensions() []*SourceInfo_Extension { + if x != nil { + return x.Extensions + } + return nil +} + +type Expr_Ident struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` +} + +func (x *Expr_Ident) Reset() { + *x = Expr_Ident{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Ident) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Ident) ProtoMessage() {} + +func (x *Expr_Ident) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[4] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Ident.ProtoReflect.Descriptor instead. +func (*Expr_Ident) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 0} +} + +func (x *Expr_Ident) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +type Expr_Select struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Operand *Expr `protobuf:"bytes,1,opt,name=operand,proto3" json:"operand,omitempty"` + Field string `protobuf:"bytes,2,opt,name=field,proto3" json:"field,omitempty"` + TestOnly bool `protobuf:"varint,3,opt,name=test_only,json=testOnly,proto3" json:"test_only,omitempty"` +} + +func (x *Expr_Select) Reset() { + *x = Expr_Select{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[5] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Select) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Select) ProtoMessage() {} + +func (x *Expr_Select) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[5] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Select.ProtoReflect.Descriptor instead. +func (*Expr_Select) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 1} +} + +func (x *Expr_Select) GetOperand() *Expr { + if x != nil { + return x.Operand + } + return nil +} + +func (x *Expr_Select) GetField() string { + if x != nil { + return x.Field + } + return "" +} + +func (x *Expr_Select) GetTestOnly() bool { + if x != nil { + return x.TestOnly + } + return false +} + +type Expr_Call struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Target *Expr `protobuf:"bytes,1,opt,name=target,proto3" json:"target,omitempty"` + Function string `protobuf:"bytes,2,opt,name=function,proto3" json:"function,omitempty"` + Args []*Expr `protobuf:"bytes,3,rep,name=args,proto3" json:"args,omitempty"` +} + +func (x *Expr_Call) Reset() { + *x = Expr_Call{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[6] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Call) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Call) ProtoMessage() {} + +func (x *Expr_Call) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[6] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Call.ProtoReflect.Descriptor instead. +func (*Expr_Call) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 2} +} + +func (x *Expr_Call) GetTarget() *Expr { + if x != nil { + return x.Target + } + return nil +} + +func (x *Expr_Call) GetFunction() string { + if x != nil { + return x.Function + } + return "" +} + +func (x *Expr_Call) GetArgs() []*Expr { + if x != nil { + return x.Args + } + return nil +} + +type Expr_CreateList struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Elements []*Expr `protobuf:"bytes,1,rep,name=elements,proto3" json:"elements,omitempty"` + OptionalIndices []int32 `protobuf:"varint,2,rep,packed,name=optional_indices,json=optionalIndices,proto3" json:"optional_indices,omitempty"` +} + +func (x *Expr_CreateList) Reset() { + *x = Expr_CreateList{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[7] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_CreateList) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_CreateList) ProtoMessage() {} + +func (x *Expr_CreateList) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[7] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_CreateList.ProtoReflect.Descriptor instead. +func (*Expr_CreateList) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 3} +} + +func (x *Expr_CreateList) GetElements() []*Expr { + if x != nil { + return x.Elements + } + return nil +} + +func (x *Expr_CreateList) GetOptionalIndices() []int32 { + if x != nil { + return x.OptionalIndices + } + return nil +} + +type Expr_CreateStruct struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + MessageName string `protobuf:"bytes,1,opt,name=message_name,json=messageName,proto3" json:"message_name,omitempty"` + Entries []*Expr_CreateStruct_Entry `protobuf:"bytes,2,rep,name=entries,proto3" json:"entries,omitempty"` +} + +func (x *Expr_CreateStruct) Reset() { + *x = Expr_CreateStruct{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[8] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_CreateStruct) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_CreateStruct) ProtoMessage() {} + +func (x *Expr_CreateStruct) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[8] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_CreateStruct.ProtoReflect.Descriptor instead. +func (*Expr_CreateStruct) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 4} +} + +func (x *Expr_CreateStruct) GetMessageName() string { + if x != nil { + return x.MessageName + } + return "" +} + +func (x *Expr_CreateStruct) GetEntries() []*Expr_CreateStruct_Entry { + if x != nil { + return x.Entries + } + return nil +} + +type Expr_Comprehension struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + IterVar string `protobuf:"bytes,1,opt,name=iter_var,json=iterVar,proto3" json:"iter_var,omitempty"` + IterRange *Expr `protobuf:"bytes,2,opt,name=iter_range,json=iterRange,proto3" json:"iter_range,omitempty"` + AccuVar string `protobuf:"bytes,3,opt,name=accu_var,json=accuVar,proto3" json:"accu_var,omitempty"` + AccuInit *Expr `protobuf:"bytes,4,opt,name=accu_init,json=accuInit,proto3" json:"accu_init,omitempty"` + LoopCondition *Expr `protobuf:"bytes,5,opt,name=loop_condition,json=loopCondition,proto3" json:"loop_condition,omitempty"` + LoopStep *Expr `protobuf:"bytes,6,opt,name=loop_step,json=loopStep,proto3" json:"loop_step,omitempty"` + Result *Expr `protobuf:"bytes,7,opt,name=result,proto3" json:"result,omitempty"` +} + +func (x *Expr_Comprehension) Reset() { + *x = Expr_Comprehension{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[9] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Comprehension) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Comprehension) ProtoMessage() {} + +func (x *Expr_Comprehension) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[9] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Comprehension.ProtoReflect.Descriptor instead. +func (*Expr_Comprehension) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 5} +} + +func (x *Expr_Comprehension) GetIterVar() string { + if x != nil { + return x.IterVar + } + return "" +} + +func (x *Expr_Comprehension) GetIterRange() *Expr { + if x != nil { + return x.IterRange + } + return nil +} + +func (x *Expr_Comprehension) GetAccuVar() string { + if x != nil { + return x.AccuVar + } + return "" +} + +func (x *Expr_Comprehension) GetAccuInit() *Expr { + if x != nil { + return x.AccuInit + } + return nil +} + +func (x *Expr_Comprehension) GetLoopCondition() *Expr { + if x != nil { + return x.LoopCondition + } + return nil +} + +func (x *Expr_Comprehension) GetLoopStep() *Expr { + if x != nil { + return x.LoopStep + } + return nil +} + +func (x *Expr_Comprehension) GetResult() *Expr { + if x != nil { + return x.Result + } + return nil +} + +type Expr_CreateStruct_Entry struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"` + // Types that are assignable to KeyKind: + // + // *Expr_CreateStruct_Entry_FieldKey + // *Expr_CreateStruct_Entry_MapKey + KeyKind isExpr_CreateStruct_Entry_KeyKind `protobuf_oneof:"key_kind"` + Value *Expr `protobuf:"bytes,4,opt,name=value,proto3" json:"value,omitempty"` + OptionalEntry bool `protobuf:"varint,5,opt,name=optional_entry,json=optionalEntry,proto3" json:"optional_entry,omitempty"` +} + +func (x *Expr_CreateStruct_Entry) Reset() { + *x = Expr_CreateStruct_Entry{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[10] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_CreateStruct_Entry) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_CreateStruct_Entry) ProtoMessage() {} + +func (x *Expr_CreateStruct_Entry) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[10] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_CreateStruct_Entry.ProtoReflect.Descriptor instead. +func (*Expr_CreateStruct_Entry) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{1, 4, 0} +} + +func (x *Expr_CreateStruct_Entry) GetId() int64 { + if x != nil { + return x.Id + } + return 0 +} + +func (m *Expr_CreateStruct_Entry) GetKeyKind() isExpr_CreateStruct_Entry_KeyKind { + if m != nil { + return m.KeyKind + } + return nil +} + +func (x *Expr_CreateStruct_Entry) GetFieldKey() string { + if x, ok := x.GetKeyKind().(*Expr_CreateStruct_Entry_FieldKey); ok { + return x.FieldKey + } + return "" +} + +func (x *Expr_CreateStruct_Entry) GetMapKey() *Expr { + if x, ok := x.GetKeyKind().(*Expr_CreateStruct_Entry_MapKey); ok { + return x.MapKey + } + return nil +} + +func (x *Expr_CreateStruct_Entry) GetValue() *Expr { + if x != nil { + return x.Value + } + return nil +} + +func (x *Expr_CreateStruct_Entry) GetOptionalEntry() bool { + if x != nil { + return x.OptionalEntry + } + return false +} + +type isExpr_CreateStruct_Entry_KeyKind interface { + isExpr_CreateStruct_Entry_KeyKind() +} + +type Expr_CreateStruct_Entry_FieldKey struct { + FieldKey string `protobuf:"bytes,2,opt,name=field_key,json=fieldKey,proto3,oneof"` +} + +type Expr_CreateStruct_Entry_MapKey struct { + MapKey *Expr `protobuf:"bytes,3,opt,name=map_key,json=mapKey,proto3,oneof"` +} + +func (*Expr_CreateStruct_Entry_FieldKey) isExpr_CreateStruct_Entry_KeyKind() {} + +func (*Expr_CreateStruct_Entry_MapKey) isExpr_CreateStruct_Entry_KeyKind() {} + +type SourceInfo_Extension struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"` + AffectedComponents []SourceInfo_Extension_Component `protobuf:"varint,2,rep,packed,name=affected_components,json=affectedComponents,proto3,enum=cel.expr.SourceInfo_Extension_Component" json:"affected_components,omitempty"` + Version *SourceInfo_Extension_Version `protobuf:"bytes,3,opt,name=version,proto3" json:"version,omitempty"` +} + +func (x *SourceInfo_Extension) Reset() { + *x = SourceInfo_Extension{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[13] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourceInfo_Extension) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourceInfo_Extension) ProtoMessage() {} + +func (x *SourceInfo_Extension) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[13] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourceInfo_Extension.ProtoReflect.Descriptor instead. +func (*SourceInfo_Extension) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{3, 2} +} + +func (x *SourceInfo_Extension) GetId() string { + if x != nil { + return x.Id + } + return "" +} + +func (x *SourceInfo_Extension) GetAffectedComponents() []SourceInfo_Extension_Component { + if x != nil { + return x.AffectedComponents + } + return nil +} + +func (x *SourceInfo_Extension) GetVersion() *SourceInfo_Extension_Version { + if x != nil { + return x.Version + } + return nil +} + +type SourceInfo_Extension_Version struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Major int64 `protobuf:"varint,1,opt,name=major,proto3" json:"major,omitempty"` + Minor int64 `protobuf:"varint,2,opt,name=minor,proto3" json:"minor,omitempty"` +} + +func (x *SourceInfo_Extension_Version) Reset() { + *x = SourceInfo_Extension_Version{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_syntax_proto_msgTypes[14] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourceInfo_Extension_Version) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourceInfo_Extension_Version) ProtoMessage() {} + +func (x *SourceInfo_Extension_Version) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_syntax_proto_msgTypes[14] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourceInfo_Extension_Version.ProtoReflect.Descriptor instead. +func (*SourceInfo_Extension_Version) Descriptor() ([]byte, []int) { + return file_cel_expr_syntax_proto_rawDescGZIP(), []int{3, 2, 0} +} + +func (x *SourceInfo_Extension_Version) GetMajor() int64 { + if x != nil { + return x.Major + } + return 0 +} + +func (x *SourceInfo_Extension_Version) GetMinor() int64 { + if x != nil { + return x.Minor + } + return 0 +} + +var File_cel_expr_syntax_proto protoreflect.FileDescriptor + +var file_cel_expr_syntax_proto_rawDesc = []byte{ + 0x0a, 0x15, 0x63, 0x65, 0x6c, 0x2f, 0x65, 0x78, 0x70, 0x72, 0x2f, 0x73, 0x79, 0x6e, 0x74, 0x61, + 0x78, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x08, 0x63, 0x65, 0x6c, 0x2e, 0x65, 0x78, 0x70, + 0x72, 0x1a, 0x1e, 0x67, 0x6f, 0x6f, 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file_cel_expr_syntax_proto_rawDescOnce sync.Once + file_cel_expr_syntax_proto_rawDescData = file_cel_expr_syntax_proto_rawDesc +) + +func file_cel_expr_syntax_proto_rawDescGZIP() []byte { + file_cel_expr_syntax_proto_rawDescOnce.Do(func() { + file_cel_expr_syntax_proto_rawDescData = protoimpl.X.CompressGZIP(file_cel_expr_syntax_proto_rawDescData) + }) + return file_cel_expr_syntax_proto_rawDescData +} + +var file_cel_expr_syntax_proto_enumTypes = make([]protoimpl.EnumInfo, 1) +var file_cel_expr_syntax_proto_msgTypes = make([]protoimpl.MessageInfo, 15) +var file_cel_expr_syntax_proto_goTypes = []interface{}{ + (SourceInfo_Extension_Component)(0), // 0: cel.expr.SourceInfo.Extension.Component + (*ParsedExpr)(nil), // 1: cel.expr.ParsedExpr + (*Expr)(nil), // 2: cel.expr.Expr + (*Constant)(nil), // 3: cel.expr.Constant + (*SourceInfo)(nil), // 4: cel.expr.SourceInfo + (*Expr_Ident)(nil), // 5: cel.expr.Expr.Ident + (*Expr_Select)(nil), // 6: cel.expr.Expr.Select + (*Expr_Call)(nil), // 7: cel.expr.Expr.Call + (*Expr_CreateList)(nil), // 8: cel.expr.Expr.CreateList + (*Expr_CreateStruct)(nil), // 9: cel.expr.Expr.CreateStruct + (*Expr_Comprehension)(nil), // 10: cel.expr.Expr.Comprehension + (*Expr_CreateStruct_Entry)(nil), // 11: cel.expr.Expr.CreateStruct.Entry + nil, // 12: cel.expr.SourceInfo.PositionsEntry + nil, // 13: cel.expr.SourceInfo.MacroCallsEntry + (*SourceInfo_Extension)(nil), // 14: cel.expr.SourceInfo.Extension + (*SourceInfo_Extension_Version)(nil), // 15: cel.expr.SourceInfo.Extension.Version + (structpb.NullValue)(0), // 16: google.protobuf.NullValue + (*durationpb.Duration)(nil), // 17: google.protobuf.Duration + (*timestamppb.Timestamp)(nil), // 18: google.protobuf.Timestamp +} +var file_cel_expr_syntax_proto_depIdxs = []int32{ + 2, // 0: cel.expr.ParsedExpr.expr:type_name -> cel.expr.Expr + 4, // 1: cel.expr.ParsedExpr.source_info:type_name -> cel.expr.SourceInfo + 3, // 2: cel.expr.Expr.const_expr:type_name -> cel.expr.Constant + 5, // 3: cel.expr.Expr.ident_expr:type_name -> cel.expr.Expr.Ident + 6, // 4: cel.expr.Expr.select_expr:type_name -> cel.expr.Expr.Select + 7, // 5: cel.expr.Expr.call_expr:type_name -> cel.expr.Expr.Call + 8, // 6: cel.expr.Expr.list_expr:type_name -> cel.expr.Expr.CreateList + 9, // 7: cel.expr.Expr.struct_expr:type_name -> cel.expr.Expr.CreateStruct + 10, // 8: cel.expr.Expr.comprehension_expr:type_name -> cel.expr.Expr.Comprehension + 16, // 9: cel.expr.Constant.null_value:type_name -> google.protobuf.NullValue + 17, // 10: cel.expr.Constant.duration_value:type_name -> google.protobuf.Duration + 18, // 11: cel.expr.Constant.timestamp_value:type_name -> google.protobuf.Timestamp + 12, // 12: cel.expr.SourceInfo.positions:type_name -> cel.expr.SourceInfo.PositionsEntry + 13, // 13: cel.expr.SourceInfo.macro_calls:type_name -> cel.expr.SourceInfo.MacroCallsEntry + 14, // 14: cel.expr.SourceInfo.extensions:type_name -> cel.expr.SourceInfo.Extension + 2, // 15: cel.expr.Expr.Select.operand:type_name -> cel.expr.Expr + 2, // 16: cel.expr.Expr.Call.target:type_name -> cel.expr.Expr + 2, // 17: cel.expr.Expr.Call.args:type_name -> cel.expr.Expr + 2, // 18: cel.expr.Expr.CreateList.elements:type_name -> cel.expr.Expr + 11, // 19: cel.expr.Expr.CreateStruct.entries:type_name -> cel.expr.Expr.CreateStruct.Entry + 2, // 20: cel.expr.Expr.Comprehension.iter_range:type_name -> cel.expr.Expr + 2, // 21: cel.expr.Expr.Comprehension.accu_init:type_name -> cel.expr.Expr + 2, // 22: cel.expr.Expr.Comprehension.loop_condition:type_name -> cel.expr.Expr + 2, // 23: cel.expr.Expr.Comprehension.loop_step:type_name -> cel.expr.Expr + 2, // 24: cel.expr.Expr.Comprehension.result:type_name -> cel.expr.Expr + 2, // 25: cel.expr.Expr.CreateStruct.Entry.map_key:type_name -> cel.expr.Expr + 2, // 26: cel.expr.Expr.CreateStruct.Entry.value:type_name -> cel.expr.Expr + 2, // 27: cel.expr.SourceInfo.MacroCallsEntry.value:type_name -> cel.expr.Expr + 0, // 28: cel.expr.SourceInfo.Extension.affected_components:type_name -> cel.expr.SourceInfo.Extension.Component + 15, // 29: cel.expr.SourceInfo.Extension.version:type_name -> cel.expr.SourceInfo.Extension.Version + 30, // [30:30] is the sub-list for method output_type + 30, // [30:30] is the sub-list for method input_type + 30, // [30:30] is the sub-list for extension type_name + 30, // [30:30] is the sub-list for extension extendee + 0, // [0:30] is the sub-list for field type_name +} + +func init() { file_cel_expr_syntax_proto_init() } +func file_cel_expr_syntax_proto_init() { + if File_cel_expr_syntax_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_cel_expr_syntax_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ParsedExpr); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Constant); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourceInfo); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Ident); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Select); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Call); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_CreateList); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_CreateStruct); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Comprehension); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_CreateStruct_Entry); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourceInfo_Extension); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_syntax_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourceInfo_Extension_Version); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_cel_expr_syntax_proto_msgTypes[1].OneofWrappers = []interface{}{ + (*Expr_ConstExpr)(nil), + (*Expr_IdentExpr)(nil), + (*Expr_SelectExpr)(nil), + (*Expr_CallExpr)(nil), + (*Expr_ListExpr)(nil), + (*Expr_StructExpr)(nil), + (*Expr_ComprehensionExpr)(nil), + } + file_cel_expr_syntax_proto_msgTypes[2].OneofWrappers = []interface{}{ + (*Constant_NullValue)(nil), + (*Constant_BoolValue)(nil), + (*Constant_Int64Value)(nil), + (*Constant_Uint64Value)(nil), + (*Constant_DoubleValue)(nil), + (*Constant_StringValue)(nil), + (*Constant_BytesValue)(nil), + (*Constant_DurationValue)(nil), + (*Constant_TimestampValue)(nil), + } + file_cel_expr_syntax_proto_msgTypes[10].OneofWrappers = []interface{}{ + (*Expr_CreateStruct_Entry_FieldKey)(nil), + (*Expr_CreateStruct_Entry_MapKey)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_cel_expr_syntax_proto_rawDesc, + NumEnums: 1, + NumMessages: 15, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_cel_expr_syntax_proto_goTypes, + DependencyIndexes: file_cel_expr_syntax_proto_depIdxs, + EnumInfos: file_cel_expr_syntax_proto_enumTypes, + MessageInfos: file_cel_expr_syntax_proto_msgTypes, + }.Build() + File_cel_expr_syntax_proto = out.File + file_cel_expr_syntax_proto_rawDesc = nil + file_cel_expr_syntax_proto_goTypes = nil + file_cel_expr_syntax_proto_depIdxs = nil +} diff --git a/vendor/cel.dev/expr/value.pb.go b/vendor/cel.dev/expr/value.pb.go new file mode 100644 index 0000000000..e5e29228c2 --- /dev/null +++ b/vendor/cel.dev/expr/value.pb.go @@ -0,0 +1,653 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.28.1 +// protoc v3.21.5 +// source: cel/expr/value.proto + +package expr + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + reflect "reflect" + sync "sync" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +type Value struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Types that are assignable to Kind: + // + // *Value_NullValue + // *Value_BoolValue + // *Value_Int64Value + // *Value_Uint64Value + // *Value_DoubleValue + // *Value_StringValue + // *Value_BytesValue + // *Value_EnumValue + // *Value_ObjectValue + // *Value_MapValue + // *Value_ListValue + // *Value_TypeValue + Kind isValue_Kind `protobuf_oneof:"kind"` +} + +func (x *Value) Reset() { + *x = Value{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_value_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Value) ProtoMessage() {} + +func (x *Value) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_value_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Value.ProtoReflect.Descriptor instead. +func (*Value) Descriptor() ([]byte, []int) { + return file_cel_expr_value_proto_rawDescGZIP(), []int{0} +} + +func (m *Value) GetKind() isValue_Kind { + if m != nil { + return m.Kind + } + return nil +} + +func (x *Value) GetNullValue() structpb.NullValue { + if x, ok := x.GetKind().(*Value_NullValue); ok { + return x.NullValue + } + return structpb.NullValue(0) +} + +func (x *Value) GetBoolValue() bool { + if x, ok := x.GetKind().(*Value_BoolValue); ok { + return x.BoolValue + } + return false +} + +func (x *Value) GetInt64Value() int64 { + if x, ok := x.GetKind().(*Value_Int64Value); ok { + return x.Int64Value + } + return 0 +} + +func (x *Value) GetUint64Value() uint64 { + if x, ok := x.GetKind().(*Value_Uint64Value); ok { + return x.Uint64Value + } + return 0 +} + +func (x *Value) GetDoubleValue() float64 { + if x, ok := x.GetKind().(*Value_DoubleValue); ok { + return x.DoubleValue + } + return 0 +} + +func (x *Value) GetStringValue() string { + if x, ok := x.GetKind().(*Value_StringValue); ok { + return x.StringValue + } + return "" +} + +func (x *Value) GetBytesValue() []byte { + if x, ok := x.GetKind().(*Value_BytesValue); ok { + return x.BytesValue + } + return nil +} + +func (x *Value) GetEnumValue() *EnumValue { + if x, ok := x.GetKind().(*Value_EnumValue); ok { + return x.EnumValue + } + return nil +} + +func (x *Value) GetObjectValue() *anypb.Any { + if x, ok := x.GetKind().(*Value_ObjectValue); ok { + return x.ObjectValue + } + return nil +} + +func (x *Value) GetMapValue() *MapValue { + if x, ok := x.GetKind().(*Value_MapValue); ok { + return x.MapValue + } + return nil +} + +func (x *Value) GetListValue() *ListValue { + if x, ok := x.GetKind().(*Value_ListValue); ok { + return x.ListValue + } + return nil +} + +func (x *Value) GetTypeValue() string { + if x, ok := x.GetKind().(*Value_TypeValue); ok { + return x.TypeValue + } + return "" +} + +type isValue_Kind interface { + isValue_Kind() +} + +type Value_NullValue struct { + NullValue structpb.NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Value_BoolValue struct { + BoolValue bool `protobuf:"varint,2,opt,name=bool_value,json=boolValue,proto3,oneof"` +} + +type Value_Int64Value struct { + Int64Value int64 `protobuf:"varint,3,opt,name=int64_value,json=int64Value,proto3,oneof"` +} + +type Value_Uint64Value struct { + Uint64Value uint64 `protobuf:"varint,4,opt,name=uint64_value,json=uint64Value,proto3,oneof"` +} + +type Value_DoubleValue struct { + DoubleValue float64 `protobuf:"fixed64,5,opt,name=double_value,json=doubleValue,proto3,oneof"` +} + +type Value_StringValue struct { + StringValue string `protobuf:"bytes,6,opt,name=string_value,json=stringValue,proto3,oneof"` +} + +type Value_BytesValue struct { + BytesValue []byte `protobuf:"bytes,7,opt,name=bytes_value,json=bytesValue,proto3,oneof"` +} + +type Value_EnumValue struct { + EnumValue *EnumValue `protobuf:"bytes,9,opt,name=enum_value,json=enumValue,proto3,oneof"` +} + +type Value_ObjectValue struct { + ObjectValue *anypb.Any `protobuf:"bytes,10,opt,name=object_value,json=objectValue,proto3,oneof"` +} + +type Value_MapValue struct { + MapValue *MapValue `protobuf:"bytes,11,opt,name=map_value,json=mapValue,proto3,oneof"` +} + +type Value_ListValue struct { + ListValue *ListValue `protobuf:"bytes,12,opt,name=list_value,json=listValue,proto3,oneof"` +} + +type Value_TypeValue struct { + TypeValue string `protobuf:"bytes,15,opt,name=type_value,json=typeValue,proto3,oneof"` +} + +func (*Value_NullValue) isValue_Kind() {} + +func (*Value_BoolValue) isValue_Kind() {} + +func (*Value_Int64Value) isValue_Kind() {} + +func (*Value_Uint64Value) isValue_Kind() {} + +func (*Value_DoubleValue) isValue_Kind() {} + +func (*Value_StringValue) isValue_Kind() {} + +func (*Value_BytesValue) isValue_Kind() {} + +func (*Value_EnumValue) isValue_Kind() {} + +func (*Value_ObjectValue) isValue_Kind() {} + +func (*Value_MapValue) isValue_Kind() {} + +func (*Value_ListValue) isValue_Kind() {} + +func (*Value_TypeValue) isValue_Kind() {} + +type EnumValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Type string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"` + Value int32 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *EnumValue) Reset() { + *x = EnumValue{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_value_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *EnumValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*EnumValue) ProtoMessage() {} + +func (x *EnumValue) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_value_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use EnumValue.ProtoReflect.Descriptor instead. +func (*EnumValue) Descriptor() ([]byte, []int) { + return file_cel_expr_value_proto_rawDescGZIP(), []int{1} +} + +func (x *EnumValue) GetType() string { + if x != nil { + return x.Type + } + return "" +} + +func (x *EnumValue) GetValue() int32 { + if x != nil { + return x.Value + } + return 0 +} + +type ListValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Values []*Value `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` +} + +func (x *ListValue) Reset() { + *x = ListValue{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_value_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ListValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ListValue) ProtoMessage() {} + +func (x *ListValue) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_value_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ListValue.ProtoReflect.Descriptor instead. +func (*ListValue) Descriptor() ([]byte, []int) { + return file_cel_expr_value_proto_rawDescGZIP(), []int{2} +} + +func (x *ListValue) GetValues() []*Value { + if x != nil { + return x.Values + } + return nil +} + +type MapValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Entries []*MapValue_Entry `protobuf:"bytes,1,rep,name=entries,proto3" json:"entries,omitempty"` +} + +func (x *MapValue) Reset() { + *x = MapValue{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_value_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *MapValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*MapValue) ProtoMessage() {} + +func (x *MapValue) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_value_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use MapValue.ProtoReflect.Descriptor instead. +func (*MapValue) Descriptor() ([]byte, []int) { + return file_cel_expr_value_proto_rawDescGZIP(), []int{3} +} + +func (x *MapValue) GetEntries() []*MapValue_Entry { + if x != nil { + return x.Entries + } + return nil +} + +type MapValue_Entry struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Key *Value `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"` + Value *Value `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *MapValue_Entry) Reset() { + *x = MapValue_Entry{} + if protoimpl.UnsafeEnabled { + mi := &file_cel_expr_value_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *MapValue_Entry) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*MapValue_Entry) ProtoMessage() {} + +func (x *MapValue_Entry) ProtoReflect() protoreflect.Message { + mi := &file_cel_expr_value_proto_msgTypes[4] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use MapValue_Entry.ProtoReflect.Descriptor instead. +func (*MapValue_Entry) Descriptor() ([]byte, []int) { + return file_cel_expr_value_proto_rawDescGZIP(), []int{3, 0} +} + +func (x *MapValue_Entry) GetKey() *Value { + if x != nil { + return x.Key + } + return nil +} + +func (x *MapValue_Entry) 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file_cel_expr_value_proto_rawDescOnce sync.Once + file_cel_expr_value_proto_rawDescData = file_cel_expr_value_proto_rawDesc +) + +func file_cel_expr_value_proto_rawDescGZIP() []byte { + file_cel_expr_value_proto_rawDescOnce.Do(func() { + file_cel_expr_value_proto_rawDescData = protoimpl.X.CompressGZIP(file_cel_expr_value_proto_rawDescData) + }) + return file_cel_expr_value_proto_rawDescData +} + +var file_cel_expr_value_proto_msgTypes = make([]protoimpl.MessageInfo, 5) +var file_cel_expr_value_proto_goTypes = []interface{}{ + (*Value)(nil), // 0: cel.expr.Value + (*EnumValue)(nil), // 1: cel.expr.EnumValue + (*ListValue)(nil), // 2: cel.expr.ListValue + (*MapValue)(nil), // 3: cel.expr.MapValue + (*MapValue_Entry)(nil), // 4: cel.expr.MapValue.Entry + (structpb.NullValue)(0), // 5: google.protobuf.NullValue + (*anypb.Any)(nil), // 6: google.protobuf.Any +} +var file_cel_expr_value_proto_depIdxs = []int32{ + 5, // 0: cel.expr.Value.null_value:type_name -> google.protobuf.NullValue + 1, // 1: cel.expr.Value.enum_value:type_name -> cel.expr.EnumValue + 6, // 2: cel.expr.Value.object_value:type_name -> google.protobuf.Any + 3, // 3: cel.expr.Value.map_value:type_name -> cel.expr.MapValue + 2, // 4: cel.expr.Value.list_value:type_name -> cel.expr.ListValue + 0, // 5: cel.expr.ListValue.values:type_name -> cel.expr.Value + 4, // 6: cel.expr.MapValue.entries:type_name -> cel.expr.MapValue.Entry + 0, // 7: cel.expr.MapValue.Entry.key:type_name -> cel.expr.Value + 0, // 8: cel.expr.MapValue.Entry.value:type_name -> cel.expr.Value + 9, // [9:9] is the sub-list for method output_type + 9, // [9:9] is the sub-list for method input_type + 9, // [9:9] is the sub-list for extension type_name + 9, // [9:9] is the sub-list for extension extendee + 0, // [0:9] is the sub-list for field type_name +} + +func init() { file_cel_expr_value_proto_init() } +func file_cel_expr_value_proto_init() { + if File_cel_expr_value_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_cel_expr_value_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Value); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_value_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*EnumValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_value_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ListValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_value_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*MapValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_cel_expr_value_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*MapValue_Entry); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_cel_expr_value_proto_msgTypes[0].OneofWrappers = []interface{}{ + (*Value_NullValue)(nil), + (*Value_BoolValue)(nil), + (*Value_Int64Value)(nil), + (*Value_Uint64Value)(nil), + (*Value_DoubleValue)(nil), + (*Value_StringValue)(nil), + (*Value_BytesValue)(nil), + (*Value_EnumValue)(nil), + (*Value_ObjectValue)(nil), + (*Value_MapValue)(nil), + (*Value_ListValue)(nil), + (*Value_TypeValue)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_cel_expr_value_proto_rawDesc, + NumEnums: 0, + NumMessages: 5, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_cel_expr_value_proto_goTypes, + DependencyIndexes: file_cel_expr_value_proto_depIdxs, + MessageInfos: file_cel_expr_value_proto_msgTypes, + }.Build() + File_cel_expr_value_proto = out.File + file_cel_expr_value_proto_rawDesc = nil + file_cel_expr_value_proto_goTypes = nil + file_cel_expr_value_proto_depIdxs = nil +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/.gitignore b/vendor/github.com/antlr4-go/antlr/v4/.gitignore new file mode 100644 index 0000000000..38ea34ff51 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/.gitignore @@ -0,0 +1,18 @@ +### Go template + +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib + +# Test binary, built with `go test -c` +*.test + + +# Go workspace file +go.work + +# No Goland stuff in this repo +.idea diff --git a/vendor/github.com/antlr4-go/antlr/v4/LICENSE b/vendor/github.com/antlr4-go/antlr/v4/LICENSE new file mode 100644 index 0000000000..a22292eb5a --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/LICENSE @@ -0,0 +1,28 @@ +Copyright (c) 2012-2023 The ANTLR Project. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +1. Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. + +3. Neither name of copyright holders nor the names of its contributors +may be used to endorse or promote products derived from this software +without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR +CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/antlr4-go/antlr/v4/README.md b/vendor/github.com/antlr4-go/antlr/v4/README.md new file mode 100644 index 0000000000..03e5b83eb1 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/README.md @@ -0,0 +1,54 @@ +[![Go Report Card](https://goreportcard.com/badge/github.com/antlr4-go/antlr?style=flat-square)](https://goreportcard.com/report/github.com/antlr4-go/antlr) +[![PkgGoDev](https://pkg.go.dev/badge/github.com/github.com/antlr4-go/antlr)](https://pkg.go.dev/github.com/antlr4-go/antlr) +[![Release](https://img.shields.io/github/v/release/antlr4-go/antlr?sort=semver&style=flat-square)](https://github.com/antlr4-go/antlr/releases/latest) +[![Release](https://img.shields.io/github/go-mod/go-version/antlr4-go/antlr?style=flat-square)](https://github.com/antlr4-go/antlr/releases/latest) +[![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg?style=flat-square)](https://github.com/antlr4-go/antlr/commit-activity) +[![License](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause) +[![GitHub stars](https://img.shields.io/github/stars/antlr4-go/antlr?style=flat-square&label=Star&maxAge=2592000)](https://GitHub.com/Naereen/StrapDown.js/stargazers/) +# ANTLR4 Go Runtime Module Repo + +IMPORTANT: Please submit PRs via a clone of the https://github.com/antlr/antlr4 repo, and not here. + + - Do not submit PRs or any change requests to this repo + - This repo is read only and is updated by the ANTLR team to create a new release of the Go Runtime for ANTLR + - This repo contains the Go runtime that your generated projects should import + +## Introduction + +This repo contains the official modules for the Go Runtime for ANTLR. It is a copy of the runtime maintained +at: https://github.com/antlr/antlr4/tree/master/runtime/Go/antlr and is automatically updated by the ANTLR team to create +the official Go runtime release only. No development work is carried out in this repo and PRs are not accepted here. + +The dev branch of this repo is kept in sync with the dev branch of the main ANTLR repo and is updated periodically. + +### Why? + +The `go get` command is unable to retrieve the Go runtime when it is embedded so +deeply in the main repo. A `go get` against the `antlr/antlr4` repo, while retrieving the correct source code for the runtime, +does not correctly resolve tags and will create a reference in your `go.mod` file that is unclear, will not upgrade smoothly and +causes confusion. + +For instance, the current Go runtime release, which is tagged with v4.13.0 in `antlr/antlr4` is retrieved by go get as: + +```sh +require ( + github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230219212500-1f9a474cc2dc +) +``` + +Where you would expect to see: + +```sh +require ( + github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.13.0 +) +``` + +The decision was taken to create a separate org in a separate repo to hold the official Go runtime for ANTLR and +from whence users can expect `go get` to behave as expected. + + +# Documentation +Please read the official documentation at: https://github.com/antlr/antlr4/blob/master/doc/index.md for tips on +migrating existing projects to use the new module location and for information on how to use the Go runtime in +general. diff --git a/vendor/github.com/antlr4-go/antlr/v4/antlrdoc.go b/vendor/github.com/antlr4-go/antlr/v4/antlrdoc.go new file mode 100644 index 0000000000..3bb4fd7c4e --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/antlrdoc.go @@ -0,0 +1,102 @@ +/* +Package antlr implements the Go version of the ANTLR 4 runtime. + +# The ANTLR Tool + +ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, +or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. +From a grammar, ANTLR generates a parser that can build parse trees and also generates a listener interface +(or visitor) that makes it easy to respond to the recognition of phrases of interest. + +# Go Runtime + +At version 4.11.x and prior, the Go runtime was not properly versioned for go modules. After this point, the runtime +source code to be imported was held in the `runtime/Go/antlr/v4` directory, and the go.mod file was updated to reflect the version of +ANTLR4 that it is compatible with (I.E. uses the /v4 path). + +However, this was found to be problematic, as it meant that with the runtime embedded so far underneath the root +of the repo, the `go get` and related commands could not properly resolve the location of the go runtime source code. +This meant that the reference to the runtime in your `go.mod` file would refer to the correct source code, but would not +list the release tag such as @4.12.0 - this was confusing, to say the least. + +As of 4.12.1, the runtime is now available as a go module in its own repo, and can be imported as `github.com/antlr4-go/antlr` +(the go get command should also be used with this path). See the main documentation for the ANTLR4 project for more information, +which is available at [ANTLR docs]. The documentation for using the Go runtime is available at [Go runtime docs]. + +This means that if you are using the source code without modules, you should also use the source code in the [new repo]. +Though we highly recommend that you use go modules, as they are now idiomatic for Go. + +I am aware that this change will prove Hyrum's Law, but am prepared to live with it for the common good. + +Go runtime author: [Jim Idle] jimi@idle.ws + +# Code Generation + +ANTLR supports the generation of code in a number of [target languages], and the generated code is supported by a +runtime library, written specifically to support the generated code in the target language. This library is the +runtime for the Go target. + +To generate code for the go target, it is generally recommended to place the source grammar files in a package of +their own, and use the `.sh` script method of generating code, using the go generate directive. In that same directory +it is usual, though not required, to place the antlr tool that should be used to generate the code. That does mean +that the antlr tool JAR file will be checked in to your source code control though, so you are, of course, free to use any other +way of specifying the version of the ANTLR tool to use, such as aliasing in `.zshrc` or equivalent, or a profile in +your IDE, or configuration in your CI system. Checking in the jar does mean that it is easy to reproduce the build as +it was at any point in its history. + +Here is a general/recommended template for an ANTLR based recognizer in Go: + + . + ├── parser + │ ├── mygrammar.g4 + │ ├── antlr-4.12.1-complete.jar + │ ├── generate.go + │ └── generate.sh + ├── parsing - generated code goes here + │ └── error_listeners.go + ├── go.mod + ├── go.sum + ├── main.go + └── main_test.go + +Make sure that the package statement in your grammar file(s) reflects the go package the generated code will exist in. + +The generate.go file then looks like this: + + package parser + + //go:generate ./generate.sh + +And the generate.sh file will look similar to this: + + #!/bin/sh + + alias antlr4='java -Xmx500M -cp "./antlr4-4.12.1-complete.jar:$CLASSPATH" org.antlr.v4.Tool' + antlr4 -Dlanguage=Go -no-visitor -package parsing *.g4 + +depending on whether you want visitors or listeners or any other ANTLR options. Not that another option here +is to generate the code into a + +From the command line at the root of your source package (location of go.mo)d) you can then simply issue the command: + + go generate ./... + +Which will generate the code for the parser, and place it in the parsing package. You can then use the generated code +by importing the parsing package. + +There are no hard and fast rules on this. It is just a recommendation. You can generate the code in any way and to anywhere you like. + +# Copyright Notice + +Copyright (c) 2012-2023 The ANTLR Project. All rights reserved. + +Use of this file is governed by the BSD 3-clause license, which can be found in the [LICENSE.txt] file in the project root. + +[target languages]: https://github.com/antlr/antlr4/tree/master/runtime +[LICENSE.txt]: https://github.com/antlr/antlr4/blob/master/LICENSE.txt +[ANTLR docs]: https://github.com/antlr/antlr4/blob/master/doc/index.md +[new repo]: https://github.com/antlr4-go/antlr +[Jim Idle]: https://github.com/jimidle +[Go runtime docs]: https://github.com/antlr/antlr4/blob/master/doc/go-target.md +*/ +package antlr diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn.go b/vendor/github.com/antlr4-go/antlr/v4/atn.go new file mode 100644 index 0000000000..cdeefed247 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn.go @@ -0,0 +1,179 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import "sync" + +// ATNInvalidAltNumber is used to represent an ALT number that has yet to be calculated or +// which is invalid for a particular struct such as [*antlr.BaseRuleContext] +var ATNInvalidAltNumber int + +// ATN represents an “[Augmented Transition Network]”, though general in ANTLR the term +// “Augmented Recursive Transition Network” though there are some descriptions of “[Recursive Transition Network]” +// in existence. +// +// ATNs represent the main networks in the system and are serialized by the code generator and support [ALL(*)]. +// +// [Augmented Transition Network]: https://en.wikipedia.org/wiki/Augmented_transition_network +// [ALL(*)]: https://www.antlr.org/papers/allstar-techreport.pdf +// [Recursive Transition Network]: https://en.wikipedia.org/wiki/Recursive_transition_network +type ATN struct { + + // DecisionToState is the decision points for all rules, sub-rules, optional + // blocks, ()+, ()*, etc. Each sub-rule/rule is a decision point, and we must track them, so we + // can go back later and build DFA predictors for them. This includes + // all the rules, sub-rules, optional blocks, ()+, ()* etc... + DecisionToState []DecisionState + + // grammarType is the ATN type and is used for deserializing ATNs from strings. + grammarType int + + // lexerActions is referenced by action transitions in the ATN for lexer ATNs. + lexerActions []LexerAction + + // maxTokenType is the maximum value for any symbol recognized by a transition in the ATN. + maxTokenType int + + modeNameToStartState map[string]*TokensStartState + + modeToStartState []*TokensStartState + + // ruleToStartState maps from rule index to starting state number. + ruleToStartState []*RuleStartState + + // ruleToStopState maps from rule index to stop state number. + ruleToStopState []*RuleStopState + + // ruleToTokenType maps the rule index to the resulting token type for lexer + // ATNs. For parser ATNs, it maps the rule index to the generated bypass token + // type if ATNDeserializationOptions.isGenerateRuleBypassTransitions was + // specified, and otherwise is nil. + ruleToTokenType []int + + // ATNStates is a list of all states in the ATN, ordered by state number. + // + states []ATNState + + mu sync.Mutex + stateMu sync.RWMutex + edgeMu sync.RWMutex +} + +// NewATN returns a new ATN struct representing the given grammarType and is used +// for runtime deserialization of ATNs from the code generated by the ANTLR tool +func NewATN(grammarType int, maxTokenType int) *ATN { + return &ATN{ + grammarType: grammarType, + maxTokenType: maxTokenType, + modeNameToStartState: make(map[string]*TokensStartState), + } +} + +// NextTokensInContext computes and returns the set of valid tokens that can occur starting +// in state s. If ctx is nil, the set of tokens will not include what can follow +// the rule surrounding s. In other words, the set will be restricted to tokens +// reachable staying within the rule of s. +func (a *ATN) NextTokensInContext(s ATNState, ctx RuleContext) *IntervalSet { + return NewLL1Analyzer(a).Look(s, nil, ctx) +} + +// NextTokensNoContext computes and returns the set of valid tokens that can occur starting +// in state s and staying in same rule. [antlr.Token.EPSILON] is in set if we reach end of +// rule. +func (a *ATN) NextTokensNoContext(s ATNState) *IntervalSet { + a.mu.Lock() + defer a.mu.Unlock() + iset := s.GetNextTokenWithinRule() + if iset == nil { + iset = a.NextTokensInContext(s, nil) + iset.readOnly = true + s.SetNextTokenWithinRule(iset) + } + return iset +} + +// NextTokens computes and returns the set of valid tokens starting in state s, by +// calling either [NextTokensNoContext] (ctx == nil) or [NextTokensInContext] (ctx != nil). +func (a *ATN) NextTokens(s ATNState, ctx RuleContext) *IntervalSet { + if ctx == nil { + return a.NextTokensNoContext(s) + } + + return a.NextTokensInContext(s, ctx) +} + +func (a *ATN) addState(state ATNState) { + if state != nil { + state.SetATN(a) + state.SetStateNumber(len(a.states)) + } + + a.states = append(a.states, state) +} + +func (a *ATN) removeState(state ATNState) { + a.states[state.GetStateNumber()] = nil // Just free the memory; don't shift states in the slice +} + +func (a *ATN) defineDecisionState(s DecisionState) int { + a.DecisionToState = append(a.DecisionToState, s) + s.setDecision(len(a.DecisionToState) - 1) + + return s.getDecision() +} + +func (a *ATN) getDecisionState(decision int) DecisionState { + if len(a.DecisionToState) == 0 { + return nil + } + + return a.DecisionToState[decision] +} + +// getExpectedTokens computes the set of input symbols which could follow ATN +// state number stateNumber in the specified full parse context ctx and returns +// the set of potentially valid input symbols which could follow the specified +// state in the specified context. This method considers the complete parser +// context, but does not evaluate semantic predicates (i.e. all predicates +// encountered during the calculation are assumed true). If a path in the ATN +// exists from the starting state to the RuleStopState of the outermost context +// without Matching any symbols, Token.EOF is added to the returned set. +// +// A nil ctx defaults to ParserRuleContext.EMPTY. +// +// It panics if the ATN does not contain state stateNumber. +func (a *ATN) getExpectedTokens(stateNumber int, ctx RuleContext) *IntervalSet { + if stateNumber < 0 || stateNumber >= len(a.states) { + panic("Invalid state number.") + } + + s := a.states[stateNumber] + following := a.NextTokens(s, nil) + + if !following.contains(TokenEpsilon) { + return following + } + + expected := NewIntervalSet() + + expected.addSet(following) + expected.removeOne(TokenEpsilon) + + for ctx != nil && ctx.GetInvokingState() >= 0 && following.contains(TokenEpsilon) { + invokingState := a.states[ctx.GetInvokingState()] + rt := invokingState.GetTransitions()[0] + + following = a.NextTokens(rt.(*RuleTransition).followState, nil) + expected.addSet(following) + expected.removeOne(TokenEpsilon) + ctx = ctx.GetParent().(RuleContext) + } + + if following.contains(TokenEpsilon) { + expected.addOne(TokenEOF) + } + + return expected +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_config.go b/vendor/github.com/antlr4-go/antlr/v4/atn_config.go new file mode 100644 index 0000000000..a83f25d349 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_config.go @@ -0,0 +1,335 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" +) + +const ( + lexerConfig = iota // Indicates that this ATNConfig is for a lexer + parserConfig // Indicates that this ATNConfig is for a parser +) + +// ATNConfig is a tuple: (ATN state, predicted alt, syntactic, semantic +// context). The syntactic context is a graph-structured stack node whose +// path(s) to the root is the rule invocation(s) chain used to arrive in the +// state. The semantic context is the tree of semantic predicates encountered +// before reaching an ATN state. +type ATNConfig struct { + precedenceFilterSuppressed bool + state ATNState + alt int + context *PredictionContext + semanticContext SemanticContext + reachesIntoOuterContext int + cType int // lexerConfig or parserConfig + lexerActionExecutor *LexerActionExecutor + passedThroughNonGreedyDecision bool +} + +// NewATNConfig6 creates a new ATNConfig instance given a state, alt and context only +func NewATNConfig6(state ATNState, alt int, context *PredictionContext) *ATNConfig { + return NewATNConfig5(state, alt, context, SemanticContextNone) +} + +// NewATNConfig5 creates a new ATNConfig instance given a state, alt, context and semantic context +func NewATNConfig5(state ATNState, alt int, context *PredictionContext, semanticContext SemanticContext) *ATNConfig { + if semanticContext == nil { + panic("semanticContext cannot be nil") // TODO: Necessary? + } + + pac := &ATNConfig{} + pac.state = state + pac.alt = alt + pac.context = context + pac.semanticContext = semanticContext + pac.cType = parserConfig + return pac +} + +// NewATNConfig4 creates a new ATNConfig instance given an existing config, and a state only +func NewATNConfig4(c *ATNConfig, state ATNState) *ATNConfig { + return NewATNConfig(c, state, c.GetContext(), c.GetSemanticContext()) +} + +// NewATNConfig3 creates a new ATNConfig instance given an existing config, a state and a semantic context +func NewATNConfig3(c *ATNConfig, state ATNState, semanticContext SemanticContext) *ATNConfig { + return NewATNConfig(c, state, c.GetContext(), semanticContext) +} + +// NewATNConfig2 creates a new ATNConfig instance given an existing config, and a context only +func NewATNConfig2(c *ATNConfig, semanticContext SemanticContext) *ATNConfig { + return NewATNConfig(c, c.GetState(), c.GetContext(), semanticContext) +} + +// NewATNConfig1 creates a new ATNConfig instance given an existing config, a state, and a context only +func NewATNConfig1(c *ATNConfig, state ATNState, context *PredictionContext) *ATNConfig { + return NewATNConfig(c, state, context, c.GetSemanticContext()) +} + +// NewATNConfig creates a new ATNConfig instance given an existing config, a state, a context and a semantic context, other 'constructors' +// are just wrappers around this one. +func NewATNConfig(c *ATNConfig, state ATNState, context *PredictionContext, semanticContext SemanticContext) *ATNConfig { + if semanticContext == nil { + panic("semanticContext cannot be nil") // TODO: Remove this - probably put here for some bug that is now fixed + } + b := &ATNConfig{} + b.InitATNConfig(c, state, c.GetAlt(), context, semanticContext) + b.cType = parserConfig + return b +} + +func (a *ATNConfig) InitATNConfig(c *ATNConfig, state ATNState, alt int, context *PredictionContext, semanticContext SemanticContext) { + + a.state = state + a.alt = alt + a.context = context + a.semanticContext = semanticContext + a.reachesIntoOuterContext = c.GetReachesIntoOuterContext() + a.precedenceFilterSuppressed = c.getPrecedenceFilterSuppressed() +} + +func (a *ATNConfig) getPrecedenceFilterSuppressed() bool { + return a.precedenceFilterSuppressed +} + +func (a *ATNConfig) setPrecedenceFilterSuppressed(v bool) { + a.precedenceFilterSuppressed = v +} + +// GetState returns the ATN state associated with this configuration +func (a *ATNConfig) GetState() ATNState { + return a.state +} + +// GetAlt returns the alternative associated with this configuration +func (a *ATNConfig) GetAlt() int { + return a.alt +} + +// SetContext sets the rule invocation stack associated with this configuration +func (a *ATNConfig) SetContext(v *PredictionContext) { + a.context = v +} + +// GetContext returns the rule invocation stack associated with this configuration +func (a *ATNConfig) GetContext() *PredictionContext { + return a.context +} + +// GetSemanticContext returns the semantic context associated with this configuration +func (a *ATNConfig) GetSemanticContext() SemanticContext { + return a.semanticContext +} + +// GetReachesIntoOuterContext returns the count of references to an outer context from this configuration +func (a *ATNConfig) GetReachesIntoOuterContext() int { + return a.reachesIntoOuterContext +} + +// SetReachesIntoOuterContext sets the count of references to an outer context from this configuration +func (a *ATNConfig) SetReachesIntoOuterContext(v int) { + a.reachesIntoOuterContext = v +} + +// Equals is the default comparison function for an ATNConfig when no specialist implementation is required +// for a collection. +// +// An ATN configuration is equal to another if both have the same state, they +// predict the same alternative, and syntactic/semantic contexts are the same. +func (a *ATNConfig) Equals(o Collectable[*ATNConfig]) bool { + switch a.cType { + case lexerConfig: + return a.LEquals(o) + case parserConfig: + return a.PEquals(o) + default: + panic("Invalid ATNConfig type") + } +} + +// PEquals is the default comparison function for a Parser ATNConfig when no specialist implementation is required +// for a collection. +// +// An ATN configuration is equal to another if both have the same state, they +// predict the same alternative, and syntactic/semantic contexts are the same. +func (a *ATNConfig) PEquals(o Collectable[*ATNConfig]) bool { + var other, ok = o.(*ATNConfig) + + if !ok { + return false + } + if a == other { + return true + } else if other == nil { + return false + } + + var equal bool + + if a.context == nil { + equal = other.context == nil + } else { + equal = a.context.Equals(other.context) + } + + var ( + nums = a.state.GetStateNumber() == other.state.GetStateNumber() + alts = a.alt == other.alt + cons = a.semanticContext.Equals(other.semanticContext) + sups = a.precedenceFilterSuppressed == other.precedenceFilterSuppressed + ) + + return nums && alts && cons && sups && equal +} + +// Hash is the default hash function for a parser ATNConfig, when no specialist hash function +// is required for a collection +func (a *ATNConfig) Hash() int { + switch a.cType { + case lexerConfig: + return a.LHash() + case parserConfig: + return a.PHash() + default: + panic("Invalid ATNConfig type") + } +} + +// PHash is the default hash function for a parser ATNConfig, when no specialist hash function +// is required for a collection +func (a *ATNConfig) PHash() int { + var c int + if a.context != nil { + c = a.context.Hash() + } + + h := murmurInit(7) + h = murmurUpdate(h, a.state.GetStateNumber()) + h = murmurUpdate(h, a.alt) + h = murmurUpdate(h, c) + h = murmurUpdate(h, a.semanticContext.Hash()) + return murmurFinish(h, 4) +} + +// String returns a string representation of the ATNConfig, usually used for debugging purposes +func (a *ATNConfig) String() string { + var s1, s2, s3 string + + if a.context != nil { + s1 = ",[" + fmt.Sprint(a.context) + "]" + } + + if a.semanticContext != SemanticContextNone { + s2 = "," + fmt.Sprint(a.semanticContext) + } + + if a.reachesIntoOuterContext > 0 { + s3 = ",up=" + fmt.Sprint(a.reachesIntoOuterContext) + } + + return fmt.Sprintf("(%v,%v%v%v%v)", a.state, a.alt, s1, s2, s3) +} + +func NewLexerATNConfig6(state ATNState, alt int, context *PredictionContext) *ATNConfig { + lac := &ATNConfig{} + lac.state = state + lac.alt = alt + lac.context = context + lac.semanticContext = SemanticContextNone + lac.cType = lexerConfig + return lac +} + +func NewLexerATNConfig4(c *ATNConfig, state ATNState) *ATNConfig { + lac := &ATNConfig{} + lac.lexerActionExecutor = c.lexerActionExecutor + lac.passedThroughNonGreedyDecision = checkNonGreedyDecision(c, state) + lac.InitATNConfig(c, state, c.GetAlt(), c.GetContext(), c.GetSemanticContext()) + lac.cType = lexerConfig + return lac +} + +func NewLexerATNConfig3(c *ATNConfig, state ATNState, lexerActionExecutor *LexerActionExecutor) *ATNConfig { + lac := &ATNConfig{} + lac.lexerActionExecutor = lexerActionExecutor + lac.passedThroughNonGreedyDecision = checkNonGreedyDecision(c, state) + lac.InitATNConfig(c, state, c.GetAlt(), c.GetContext(), c.GetSemanticContext()) + lac.cType = lexerConfig + return lac +} + +func NewLexerATNConfig2(c *ATNConfig, state ATNState, context *PredictionContext) *ATNConfig { + lac := &ATNConfig{} + lac.lexerActionExecutor = c.lexerActionExecutor + lac.passedThroughNonGreedyDecision = checkNonGreedyDecision(c, state) + lac.InitATNConfig(c, state, c.GetAlt(), context, c.GetSemanticContext()) + lac.cType = lexerConfig + return lac +} + +//goland:noinspection GoUnusedExportedFunction +func NewLexerATNConfig1(state ATNState, alt int, context *PredictionContext) *ATNConfig { + lac := &ATNConfig{} + lac.state = state + lac.alt = alt + lac.context = context + lac.semanticContext = SemanticContextNone + lac.cType = lexerConfig + return lac +} + +// LHash is the default hash function for Lexer ATNConfig objects, it can be used directly or via +// the default comparator [ObjEqComparator]. +func (a *ATNConfig) LHash() int { + var f int + if a.passedThroughNonGreedyDecision { + f = 1 + } else { + f = 0 + } + h := murmurInit(7) + h = murmurUpdate(h, a.state.GetStateNumber()) + h = murmurUpdate(h, a.alt) + h = murmurUpdate(h, a.context.Hash()) + h = murmurUpdate(h, a.semanticContext.Hash()) + h = murmurUpdate(h, f) + h = murmurUpdate(h, a.lexerActionExecutor.Hash()) + h = murmurFinish(h, 6) + return h +} + +// LEquals is the default comparison function for Lexer ATNConfig objects, it can be used directly or via +// the default comparator [ObjEqComparator]. +func (a *ATNConfig) LEquals(other Collectable[*ATNConfig]) bool { + var otherT, ok = other.(*ATNConfig) + if !ok { + return false + } else if a == otherT { + return true + } else if a.passedThroughNonGreedyDecision != otherT.passedThroughNonGreedyDecision { + return false + } + + switch { + case a.lexerActionExecutor == nil && otherT.lexerActionExecutor == nil: + return true + case a.lexerActionExecutor != nil && otherT.lexerActionExecutor != nil: + if !a.lexerActionExecutor.Equals(otherT.lexerActionExecutor) { + return false + } + default: + return false // One but not both, are nil + } + + return a.PEquals(otherT) +} + +func checkNonGreedyDecision(source *ATNConfig, target ATNState) bool { + var ds, ok = target.(DecisionState) + + return source.passedThroughNonGreedyDecision || (ok && ds.getNonGreedy()) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_config_set.go b/vendor/github.com/antlr4-go/antlr/v4/atn_config_set.go new file mode 100644 index 0000000000..52dbaf8064 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_config_set.go @@ -0,0 +1,301 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" +) + +// ATNConfigSet is a specialized set of ATNConfig that tracks information +// about its elements and can combine similar configurations using a +// graph-structured stack. +type ATNConfigSet struct { + cachedHash int + + // configLookup is used to determine whether two ATNConfigSets are equal. We + // need all configurations with the same (s, i, _, semctx) to be equal. A key + // effectively doubles the number of objects associated with ATNConfigs. All + // keys are hashed by (s, i, _, pi), not including the context. Wiped out when + // read-only because a set becomes a DFA state. + configLookup *JStore[*ATNConfig, Comparator[*ATNConfig]] + + // configs is the added elements that did not match an existing key in configLookup + configs []*ATNConfig + + // TODO: These fields make me pretty uncomfortable, but it is nice to pack up + // info together because it saves re-computation. Can we track conflicts as they + // are added to save scanning configs later? + conflictingAlts *BitSet + + // dipsIntoOuterContext is used by parsers and lexers. In a lexer, it indicates + // we hit a pred while computing a closure operation. Do not make a DFA state + // from the ATNConfigSet in this case. TODO: How is this used by parsers? + dipsIntoOuterContext bool + + // fullCtx is whether it is part of a full context LL prediction. Used to + // determine how to merge $. It is a wildcard with SLL, but not for an LL + // context merge. + fullCtx bool + + // Used in parser and lexer. In lexer, it indicates we hit a pred + // while computing a closure operation. Don't make a DFA state from this set. + hasSemanticContext bool + + // readOnly is whether it is read-only. Do not + // allow any code to manipulate the set if true because DFA states will point at + // sets and those must not change. It not, protect other fields; conflictingAlts + // in particular, which is assigned after readOnly. + readOnly bool + + // TODO: These fields make me pretty uncomfortable, but it is nice to pack up + // info together because it saves re-computation. Can we track conflicts as they + // are added to save scanning configs later? + uniqueAlt int +} + +// Alts returns the combined set of alts for all the configurations in this set. +func (b *ATNConfigSet) Alts() *BitSet { + alts := NewBitSet() + for _, it := range b.configs { + alts.add(it.GetAlt()) + } + return alts +} + +// NewATNConfigSet creates a new ATNConfigSet instance. +func NewATNConfigSet(fullCtx bool) *ATNConfigSet { + return &ATNConfigSet{ + cachedHash: -1, + configLookup: NewJStore[*ATNConfig, Comparator[*ATNConfig]](aConfCompInst, ATNConfigLookupCollection, "NewATNConfigSet()"), + fullCtx: fullCtx, + } +} + +// Add merges contexts with existing configs for (s, i, pi, _), +// where 's' is the ATNConfig.state, 'i' is the ATNConfig.alt, and +// 'pi' is the [ATNConfig].semanticContext. +// +// We use (s,i,pi) as the key. +// Updates dipsIntoOuterContext and hasSemanticContext when necessary. +func (b *ATNConfigSet) Add(config *ATNConfig, mergeCache *JPCMap) bool { + if b.readOnly { + panic("set is read-only") + } + + if config.GetSemanticContext() != SemanticContextNone { + b.hasSemanticContext = true + } + + if config.GetReachesIntoOuterContext() > 0 { + b.dipsIntoOuterContext = true + } + + existing, present := b.configLookup.Put(config) + + // The config was not already in the set + // + if !present { + b.cachedHash = -1 + b.configs = append(b.configs, config) // Track order here + return true + } + + // Merge a previous (s, i, pi, _) with it and save the result + rootIsWildcard := !b.fullCtx + merged := merge(existing.GetContext(), config.GetContext(), rootIsWildcard, mergeCache) + + // No need to check for existing.context because config.context is in the cache, + // since the only way to create new graphs is the "call rule" and here. We cache + // at both places. + existing.SetReachesIntoOuterContext(intMax(existing.GetReachesIntoOuterContext(), config.GetReachesIntoOuterContext())) + + // Preserve the precedence filter suppression during the merge + if config.getPrecedenceFilterSuppressed() { + existing.setPrecedenceFilterSuppressed(true) + } + + // Replace the context because there is no need to do alt mapping + existing.SetContext(merged) + + return true +} + +// GetStates returns the set of states represented by all configurations in this config set +func (b *ATNConfigSet) GetStates() *JStore[ATNState, Comparator[ATNState]] { + + // states uses the standard comparator and Hash() provided by the ATNState instance + // + states := NewJStore[ATNState, Comparator[ATNState]](aStateEqInst, ATNStateCollection, "ATNConfigSet.GetStates()") + + for i := 0; i < len(b.configs); i++ { + states.Put(b.configs[i].GetState()) + } + + return states +} + +func (b *ATNConfigSet) GetPredicates() []SemanticContext { + predicates := make([]SemanticContext, 0) + + for i := 0; i < len(b.configs); i++ { + c := b.configs[i].GetSemanticContext() + + if c != SemanticContextNone { + predicates = append(predicates, c) + } + } + + return predicates +} + +func (b *ATNConfigSet) OptimizeConfigs(interpreter *BaseATNSimulator) { + if b.readOnly { + panic("set is read-only") + } + + // Empty indicate no optimization is possible + if b.configLookup == nil || b.configLookup.Len() == 0 { + return + } + + for i := 0; i < len(b.configs); i++ { + config := b.configs[i] + config.SetContext(interpreter.getCachedContext(config.GetContext())) + } +} + +func (b *ATNConfigSet) AddAll(coll []*ATNConfig) bool { + for i := 0; i < len(coll); i++ { + b.Add(coll[i], nil) + } + + return false +} + +// Compare The configs are only equal if they are in the same order and their Equals function returns true. +// Java uses ArrayList.equals(), which requires the same order. +func (b *ATNConfigSet) Compare(bs *ATNConfigSet) bool { + if len(b.configs) != len(bs.configs) { + return false + } + for i := 0; i < len(b.configs); i++ { + if !b.configs[i].Equals(bs.configs[i]) { + return false + } + } + + return true +} + +func (b *ATNConfigSet) Equals(other Collectable[ATNConfig]) bool { + if b == other { + return true + } else if _, ok := other.(*ATNConfigSet); !ok { + return false + } + + other2 := other.(*ATNConfigSet) + var eca bool + switch { + case b.conflictingAlts == nil && other2.conflictingAlts == nil: + eca = true + case b.conflictingAlts != nil && other2.conflictingAlts != nil: + eca = b.conflictingAlts.equals(other2.conflictingAlts) + } + return b.configs != nil && + b.fullCtx == other2.fullCtx && + b.uniqueAlt == other2.uniqueAlt && + eca && + b.hasSemanticContext == other2.hasSemanticContext && + b.dipsIntoOuterContext == other2.dipsIntoOuterContext && + b.Compare(other2) +} + +func (b *ATNConfigSet) Hash() int { + if b.readOnly { + if b.cachedHash == -1 { + b.cachedHash = b.hashCodeConfigs() + } + + return b.cachedHash + } + + return b.hashCodeConfigs() +} + +func (b *ATNConfigSet) hashCodeConfigs() int { + h := 1 + for _, config := range b.configs { + h = 31*h + config.Hash() + } + return h +} + +func (b *ATNConfigSet) Contains(item *ATNConfig) bool { + if b.readOnly { + panic("not implemented for read-only sets") + } + if b.configLookup == nil { + return false + } + return b.configLookup.Contains(item) +} + +func (b *ATNConfigSet) ContainsFast(item *ATNConfig) bool { + return b.Contains(item) +} + +func (b *ATNConfigSet) Clear() { + if b.readOnly { + panic("set is read-only") + } + b.configs = make([]*ATNConfig, 0) + b.cachedHash = -1 + b.configLookup = NewJStore[*ATNConfig, Comparator[*ATNConfig]](aConfCompInst, ATNConfigLookupCollection, "NewATNConfigSet()") +} + +func (b *ATNConfigSet) String() string { + + s := "[" + + for i, c := range b.configs { + s += c.String() + + if i != len(b.configs)-1 { + s += ", " + } + } + + s += "]" + + if b.hasSemanticContext { + s += ",hasSemanticContext=" + fmt.Sprint(b.hasSemanticContext) + } + + if b.uniqueAlt != ATNInvalidAltNumber { + s += ",uniqueAlt=" + fmt.Sprint(b.uniqueAlt) + } + + if b.conflictingAlts != nil { + s += ",conflictingAlts=" + b.conflictingAlts.String() + } + + if b.dipsIntoOuterContext { + s += ",dipsIntoOuterContext" + } + + return s +} + +// NewOrderedATNConfigSet creates a config set with a slightly different Hash/Equal pair +// for use in lexers. +func NewOrderedATNConfigSet() *ATNConfigSet { + return &ATNConfigSet{ + cachedHash: -1, + // This set uses the standard Hash() and Equals() from ATNConfig + configLookup: NewJStore[*ATNConfig, Comparator[*ATNConfig]](aConfEqInst, ATNConfigCollection, "ATNConfigSet.NewOrderedATNConfigSet()"), + fullCtx: false, + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_deserialization_options.go b/vendor/github.com/antlr4-go/antlr/v4/atn_deserialization_options.go new file mode 100644 index 0000000000..bdb30b3622 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_deserialization_options.go @@ -0,0 +1,62 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import "errors" + +var defaultATNDeserializationOptions = ATNDeserializationOptions{true, true, false} + +type ATNDeserializationOptions struct { + readOnly bool + verifyATN bool + generateRuleBypassTransitions bool +} + +func (opts *ATNDeserializationOptions) ReadOnly() bool { + return opts.readOnly +} + +func (opts *ATNDeserializationOptions) SetReadOnly(readOnly bool) { + if opts.readOnly { + panic(errors.New("cannot mutate read only ATNDeserializationOptions")) + } + opts.readOnly = readOnly +} + +func (opts *ATNDeserializationOptions) VerifyATN() bool { + return opts.verifyATN +} + +func (opts *ATNDeserializationOptions) SetVerifyATN(verifyATN bool) { + if opts.readOnly { + panic(errors.New("cannot mutate read only ATNDeserializationOptions")) + } + opts.verifyATN = verifyATN +} + +func (opts *ATNDeserializationOptions) GenerateRuleBypassTransitions() bool { + return opts.generateRuleBypassTransitions +} + +func (opts *ATNDeserializationOptions) SetGenerateRuleBypassTransitions(generateRuleBypassTransitions bool) { + if opts.readOnly { + panic(errors.New("cannot mutate read only ATNDeserializationOptions")) + } + opts.generateRuleBypassTransitions = generateRuleBypassTransitions +} + +//goland:noinspection GoUnusedExportedFunction +func DefaultATNDeserializationOptions() *ATNDeserializationOptions { + return NewATNDeserializationOptions(&defaultATNDeserializationOptions) +} + +func NewATNDeserializationOptions(other *ATNDeserializationOptions) *ATNDeserializationOptions { + o := new(ATNDeserializationOptions) + if other != nil { + *o = *other + o.readOnly = false + } + return o +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_deserializer.go b/vendor/github.com/antlr4-go/antlr/v4/atn_deserializer.go new file mode 100644 index 0000000000..2dcb9ae11b --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_deserializer.go @@ -0,0 +1,684 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" +) + +const serializedVersion = 4 + +type loopEndStateIntPair struct { + item0 *LoopEndState + item1 int +} + +type blockStartStateIntPair struct { + item0 BlockStartState + item1 int +} + +type ATNDeserializer struct { + options *ATNDeserializationOptions + data []int32 + pos int +} + +func NewATNDeserializer(options *ATNDeserializationOptions) *ATNDeserializer { + if options == nil { + options = &defaultATNDeserializationOptions + } + + return &ATNDeserializer{options: options} +} + +//goland:noinspection GoUnusedFunction +func stringInSlice(a string, list []string) int { + for i, b := range list { + if b == a { + return i + } + } + + return -1 +} + +func (a *ATNDeserializer) Deserialize(data []int32) *ATN { + a.data = data + a.pos = 0 + a.checkVersion() + + atn := a.readATN() + + a.readStates(atn) + a.readRules(atn) + a.readModes(atn) + + sets := a.readSets(atn, nil) + + a.readEdges(atn, sets) + a.readDecisions(atn) + a.readLexerActions(atn) + a.markPrecedenceDecisions(atn) + a.verifyATN(atn) + + if a.options.GenerateRuleBypassTransitions() && atn.grammarType == ATNTypeParser { + a.generateRuleBypassTransitions(atn) + // Re-verify after modification + a.verifyATN(atn) + } + + return atn + +} + +func (a *ATNDeserializer) checkVersion() { + version := a.readInt() + + if version != serializedVersion { + panic("Could not deserialize ATN with version " + strconv.Itoa(version) + " (expected " + strconv.Itoa(serializedVersion) + ").") + } +} + +func (a *ATNDeserializer) readATN() *ATN { + grammarType := a.readInt() + maxTokenType := a.readInt() + + return NewATN(grammarType, maxTokenType) +} + +func (a *ATNDeserializer) readStates(atn *ATN) { + nstates := a.readInt() + + // Allocate worst case size. + loopBackStateNumbers := make([]loopEndStateIntPair, 0, nstates) + endStateNumbers := make([]blockStartStateIntPair, 0, nstates) + + // Preallocate states slice. + atn.states = make([]ATNState, 0, nstates) + + for i := 0; i < nstates; i++ { + stype := a.readInt() + + // Ignore bad types of states + if stype == ATNStateInvalidType { + atn.addState(nil) + continue + } + + ruleIndex := a.readInt() + + s := a.stateFactory(stype, ruleIndex) + + if stype == ATNStateLoopEnd { + loopBackStateNumber := a.readInt() + + loopBackStateNumbers = append(loopBackStateNumbers, loopEndStateIntPair{s.(*LoopEndState), loopBackStateNumber}) + } else if s2, ok := s.(BlockStartState); ok { + endStateNumber := a.readInt() + + endStateNumbers = append(endStateNumbers, blockStartStateIntPair{s2, endStateNumber}) + } + + atn.addState(s) + } + + // Delay the assignment of loop back and end states until we know all the state + // instances have been initialized + for _, pair := range loopBackStateNumbers { + pair.item0.loopBackState = atn.states[pair.item1] + } + + for _, pair := range endStateNumbers { + pair.item0.setEndState(atn.states[pair.item1].(*BlockEndState)) + } + + numNonGreedyStates := a.readInt() + for j := 0; j < numNonGreedyStates; j++ { + stateNumber := a.readInt() + + atn.states[stateNumber].(DecisionState).setNonGreedy(true) + } + + numPrecedenceStates := a.readInt() + for j := 0; j < numPrecedenceStates; j++ { + stateNumber := a.readInt() + + atn.states[stateNumber].(*RuleStartState).isPrecedenceRule = true + } +} + +func (a *ATNDeserializer) readRules(atn *ATN) { + nrules := a.readInt() + + if atn.grammarType == ATNTypeLexer { + atn.ruleToTokenType = make([]int, nrules) + } + + atn.ruleToStartState = make([]*RuleStartState, nrules) + + for i := range atn.ruleToStartState { + s := a.readInt() + startState := atn.states[s].(*RuleStartState) + + atn.ruleToStartState[i] = startState + + if atn.grammarType == ATNTypeLexer { + tokenType := a.readInt() + + atn.ruleToTokenType[i] = tokenType + } + } + + atn.ruleToStopState = make([]*RuleStopState, nrules) + + for _, state := range atn.states { + if s2, ok := state.(*RuleStopState); ok { + atn.ruleToStopState[s2.ruleIndex] = s2 + atn.ruleToStartState[s2.ruleIndex].stopState = s2 + } + } +} + +func (a *ATNDeserializer) readModes(atn *ATN) { + nmodes := a.readInt() + atn.modeToStartState = make([]*TokensStartState, nmodes) + + for i := range atn.modeToStartState { + s := a.readInt() + + atn.modeToStartState[i] = atn.states[s].(*TokensStartState) + } +} + +func (a *ATNDeserializer) readSets(_ *ATN, sets []*IntervalSet) []*IntervalSet { + m := a.readInt() + + // Preallocate the needed capacity. + if cap(sets)-len(sets) < m { + isets := make([]*IntervalSet, len(sets), len(sets)+m) + copy(isets, sets) + sets = isets + } + + for i := 0; i < m; i++ { + iset := NewIntervalSet() + + sets = append(sets, iset) + + n := a.readInt() + containsEOF := a.readInt() + + if containsEOF != 0 { + iset.addOne(-1) + } + + for j := 0; j < n; j++ { + i1 := a.readInt() + i2 := a.readInt() + + iset.addRange(i1, i2) + } + } + + return sets +} + +func (a *ATNDeserializer) readEdges(atn *ATN, sets []*IntervalSet) { + nedges := a.readInt() + + for i := 0; i < nedges; i++ { + var ( + src = a.readInt() + trg = a.readInt() + ttype = a.readInt() + arg1 = a.readInt() + arg2 = a.readInt() + arg3 = a.readInt() + trans = a.edgeFactory(atn, ttype, src, trg, arg1, arg2, arg3, sets) + srcState = atn.states[src] + ) + + srcState.AddTransition(trans, -1) + } + + // Edges for rule stop states can be derived, so they are not serialized + for _, state := range atn.states { + for _, t := range state.GetTransitions() { + var rt, ok = t.(*RuleTransition) + + if !ok { + continue + } + + outermostPrecedenceReturn := -1 + + if atn.ruleToStartState[rt.getTarget().GetRuleIndex()].isPrecedenceRule { + if rt.precedence == 0 { + outermostPrecedenceReturn = rt.getTarget().GetRuleIndex() + } + } + + trans := NewEpsilonTransition(rt.followState, outermostPrecedenceReturn) + + atn.ruleToStopState[rt.getTarget().GetRuleIndex()].AddTransition(trans, -1) + } + } + + for _, state := range atn.states { + if s2, ok := state.(BlockStartState); ok { + // We need to know the end state to set its start state + if s2.getEndState() == nil { + panic("IllegalState") + } + + // Block end states can only be associated to a single block start state + if s2.getEndState().startState != nil { + panic("IllegalState") + } + + s2.getEndState().startState = state + } + + if s2, ok := state.(*PlusLoopbackState); ok { + for _, t := range s2.GetTransitions() { + if t2, ok := t.getTarget().(*PlusBlockStartState); ok { + t2.loopBackState = state + } + } + } else if s2, ok := state.(*StarLoopbackState); ok { + for _, t := range s2.GetTransitions() { + if t2, ok := t.getTarget().(*StarLoopEntryState); ok { + t2.loopBackState = state + } + } + } + } +} + +func (a *ATNDeserializer) readDecisions(atn *ATN) { + ndecisions := a.readInt() + + for i := 0; i < ndecisions; i++ { + s := a.readInt() + decState := atn.states[s].(DecisionState) + + atn.DecisionToState = append(atn.DecisionToState, decState) + decState.setDecision(i) + } +} + +func (a *ATNDeserializer) readLexerActions(atn *ATN) { + if atn.grammarType == ATNTypeLexer { + count := a.readInt() + + atn.lexerActions = make([]LexerAction, count) + + for i := range atn.lexerActions { + actionType := a.readInt() + data1 := a.readInt() + data2 := a.readInt() + atn.lexerActions[i] = a.lexerActionFactory(actionType, data1, data2) + } + } +} + +func (a *ATNDeserializer) generateRuleBypassTransitions(atn *ATN) { + count := len(atn.ruleToStartState) + + for i := 0; i < count; i++ { + atn.ruleToTokenType[i] = atn.maxTokenType + i + 1 + } + + for i := 0; i < count; i++ { + a.generateRuleBypassTransition(atn, i) + } +} + +func (a *ATNDeserializer) generateRuleBypassTransition(atn *ATN, idx int) { + bypassStart := NewBasicBlockStartState() + + bypassStart.ruleIndex = idx + atn.addState(bypassStart) + + bypassStop := NewBlockEndState() + + bypassStop.ruleIndex = idx + atn.addState(bypassStop) + + bypassStart.endState = bypassStop + + atn.defineDecisionState(&bypassStart.BaseDecisionState) + + bypassStop.startState = bypassStart + + var excludeTransition Transition + var endState ATNState + + if atn.ruleToStartState[idx].isPrecedenceRule { + // Wrap from the beginning of the rule to the StarLoopEntryState + endState = nil + + for i := 0; i < len(atn.states); i++ { + state := atn.states[i] + + if a.stateIsEndStateFor(state, idx) != nil { + endState = state + excludeTransition = state.(*StarLoopEntryState).loopBackState.GetTransitions()[0] + + break + } + } + + if excludeTransition == nil { + panic("Couldn't identify final state of the precedence rule prefix section.") + } + } else { + endState = atn.ruleToStopState[idx] + } + + // All non-excluded transitions that currently target end state need to target + // blockEnd instead + for i := 0; i < len(atn.states); i++ { + state := atn.states[i] + + for j := 0; j < len(state.GetTransitions()); j++ { + transition := state.GetTransitions()[j] + + if transition == excludeTransition { + continue + } + + if transition.getTarget() == endState { + transition.setTarget(bypassStop) + } + } + } + + // All transitions leaving the rule start state need to leave blockStart instead + ruleToStartState := atn.ruleToStartState[idx] + count := len(ruleToStartState.GetTransitions()) + + for count > 0 { + bypassStart.AddTransition(ruleToStartState.GetTransitions()[count-1], -1) + ruleToStartState.SetTransitions([]Transition{ruleToStartState.GetTransitions()[len(ruleToStartState.GetTransitions())-1]}) + } + + // Link the new states + atn.ruleToStartState[idx].AddTransition(NewEpsilonTransition(bypassStart, -1), -1) + bypassStop.AddTransition(NewEpsilonTransition(endState, -1), -1) + + MatchState := NewBasicState() + + atn.addState(MatchState) + MatchState.AddTransition(NewAtomTransition(bypassStop, atn.ruleToTokenType[idx]), -1) + bypassStart.AddTransition(NewEpsilonTransition(MatchState, -1), -1) +} + +func (a *ATNDeserializer) stateIsEndStateFor(state ATNState, idx int) ATNState { + if state.GetRuleIndex() != idx { + return nil + } + + if _, ok := state.(*StarLoopEntryState); !ok { + return nil + } + + maybeLoopEndState := state.GetTransitions()[len(state.GetTransitions())-1].getTarget() + + if _, ok := maybeLoopEndState.(*LoopEndState); !ok { + return nil + } + + var _, ok = maybeLoopEndState.GetTransitions()[0].getTarget().(*RuleStopState) + + if maybeLoopEndState.(*LoopEndState).epsilonOnlyTransitions && ok { + return state + } + + return nil +} + +// markPrecedenceDecisions analyzes the StarLoopEntryState states in the +// specified ATN to set the StarLoopEntryState.precedenceRuleDecision field to +// the correct value. +func (a *ATNDeserializer) markPrecedenceDecisions(atn *ATN) { + for _, state := range atn.states { + if _, ok := state.(*StarLoopEntryState); !ok { + continue + } + + // We analyze the [ATN] to determine if an ATN decision state is the + // decision for the closure block that determines whether a + // precedence rule should continue or complete. + if atn.ruleToStartState[state.GetRuleIndex()].isPrecedenceRule { + maybeLoopEndState := state.GetTransitions()[len(state.GetTransitions())-1].getTarget() + + if s3, ok := maybeLoopEndState.(*LoopEndState); ok { + var _, ok2 = maybeLoopEndState.GetTransitions()[0].getTarget().(*RuleStopState) + + if s3.epsilonOnlyTransitions && ok2 { + state.(*StarLoopEntryState).precedenceRuleDecision = true + } + } + } + } +} + +func (a *ATNDeserializer) verifyATN(atn *ATN) { + if !a.options.VerifyATN() { + return + } + + // Verify assumptions + for _, state := range atn.states { + if state == nil { + continue + } + + a.checkCondition(state.GetEpsilonOnlyTransitions() || len(state.GetTransitions()) <= 1, "") + + switch s2 := state.(type) { + case *PlusBlockStartState: + a.checkCondition(s2.loopBackState != nil, "") + + case *StarLoopEntryState: + a.checkCondition(s2.loopBackState != nil, "") + a.checkCondition(len(s2.GetTransitions()) == 2, "") + + switch s2.transitions[0].getTarget().(type) { + case *StarBlockStartState: + _, ok := s2.transitions[1].getTarget().(*LoopEndState) + + a.checkCondition(ok, "") + a.checkCondition(!s2.nonGreedy, "") + + case *LoopEndState: + var _, ok = s2.transitions[1].getTarget().(*StarBlockStartState) + + a.checkCondition(ok, "") + a.checkCondition(s2.nonGreedy, "") + + default: + panic("IllegalState") + } + + case *StarLoopbackState: + a.checkCondition(len(state.GetTransitions()) == 1, "") + + var _, ok = state.GetTransitions()[0].getTarget().(*StarLoopEntryState) + + a.checkCondition(ok, "") + + case *LoopEndState: + a.checkCondition(s2.loopBackState != nil, "") + + case *RuleStartState: + a.checkCondition(s2.stopState != nil, "") + + case BlockStartState: + a.checkCondition(s2.getEndState() != nil, "") + + case *BlockEndState: + a.checkCondition(s2.startState != nil, "") + + case DecisionState: + a.checkCondition(len(s2.GetTransitions()) <= 1 || s2.getDecision() >= 0, "") + + default: + var _, ok = s2.(*RuleStopState) + + a.checkCondition(len(s2.GetTransitions()) <= 1 || ok, "") + } + } +} + +func (a *ATNDeserializer) checkCondition(condition bool, message string) { + if !condition { + if message == "" { + message = "IllegalState" + } + + panic(message) + } +} + +func (a *ATNDeserializer) readInt() int { + v := a.data[a.pos] + + a.pos++ + + return int(v) // data is 32 bits but int is at least that big +} + +func (a *ATNDeserializer) edgeFactory(atn *ATN, typeIndex, _, trg, arg1, arg2, arg3 int, sets []*IntervalSet) Transition { + target := atn.states[trg] + + switch typeIndex { + case TransitionEPSILON: + return NewEpsilonTransition(target, -1) + + case TransitionRANGE: + if arg3 != 0 { + return NewRangeTransition(target, TokenEOF, arg2) + } + + return NewRangeTransition(target, arg1, arg2) + + case TransitionRULE: + return NewRuleTransition(atn.states[arg1], arg2, arg3, target) + + case TransitionPREDICATE: + return NewPredicateTransition(target, arg1, arg2, arg3 != 0) + + case TransitionPRECEDENCE: + return NewPrecedencePredicateTransition(target, arg1) + + case TransitionATOM: + if arg3 != 0 { + return NewAtomTransition(target, TokenEOF) + } + + return NewAtomTransition(target, arg1) + + case TransitionACTION: + return NewActionTransition(target, arg1, arg2, arg3 != 0) + + case TransitionSET: + return NewSetTransition(target, sets[arg1]) + + case TransitionNOTSET: + return NewNotSetTransition(target, sets[arg1]) + + case TransitionWILDCARD: + return NewWildcardTransition(target) + } + + panic("The specified transition type is not valid.") +} + +func (a *ATNDeserializer) stateFactory(typeIndex, ruleIndex int) ATNState { + var s ATNState + + switch typeIndex { + case ATNStateInvalidType: + return nil + + case ATNStateBasic: + s = NewBasicState() + + case ATNStateRuleStart: + s = NewRuleStartState() + + case ATNStateBlockStart: + s = NewBasicBlockStartState() + + case ATNStatePlusBlockStart: + s = NewPlusBlockStartState() + + case ATNStateStarBlockStart: + s = NewStarBlockStartState() + + case ATNStateTokenStart: + s = NewTokensStartState() + + case ATNStateRuleStop: + s = NewRuleStopState() + + case ATNStateBlockEnd: + s = NewBlockEndState() + + case ATNStateStarLoopBack: + s = NewStarLoopbackState() + + case ATNStateStarLoopEntry: + s = NewStarLoopEntryState() + + case ATNStatePlusLoopBack: + s = NewPlusLoopbackState() + + case ATNStateLoopEnd: + s = NewLoopEndState() + + default: + panic(fmt.Sprintf("state type %d is invalid", typeIndex)) + } + + s.SetRuleIndex(ruleIndex) + + return s +} + +func (a *ATNDeserializer) lexerActionFactory(typeIndex, data1, data2 int) LexerAction { + switch typeIndex { + case LexerActionTypeChannel: + return NewLexerChannelAction(data1) + + case LexerActionTypeCustom: + return NewLexerCustomAction(data1, data2) + + case LexerActionTypeMode: + return NewLexerModeAction(data1) + + case LexerActionTypeMore: + return LexerMoreActionINSTANCE + + case LexerActionTypePopMode: + return LexerPopModeActionINSTANCE + + case LexerActionTypePushMode: + return NewLexerPushModeAction(data1) + + case LexerActionTypeSkip: + return LexerSkipActionINSTANCE + + case LexerActionTypeType: + return NewLexerTypeAction(data1) + + default: + panic(fmt.Sprintf("lexer action %d is invalid", typeIndex)) + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_simulator.go b/vendor/github.com/antlr4-go/antlr/v4/atn_simulator.go new file mode 100644 index 0000000000..afe6c9f809 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_simulator.go @@ -0,0 +1,41 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +var ATNSimulatorError = NewDFAState(0x7FFFFFFF, NewATNConfigSet(false)) + +type IATNSimulator interface { + SharedContextCache() *PredictionContextCache + ATN() *ATN + DecisionToDFA() []*DFA +} + +type BaseATNSimulator struct { + atn *ATN + sharedContextCache *PredictionContextCache + decisionToDFA []*DFA +} + +func (b *BaseATNSimulator) getCachedContext(context *PredictionContext) *PredictionContext { + if b.sharedContextCache == nil { + return context + } + + //visited := NewJMap[*PredictionContext, *PredictionContext, Comparator[*PredictionContext]](pContextEqInst, PredictionVisitedCollection, "Visit map in getCachedContext()") + visited := NewVisitRecord() + return getCachedBasePredictionContext(context, b.sharedContextCache, visited) +} + +func (b *BaseATNSimulator) SharedContextCache() *PredictionContextCache { + return b.sharedContextCache +} + +func (b *BaseATNSimulator) ATN() *ATN { + return b.atn +} + +func (b *BaseATNSimulator) DecisionToDFA() []*DFA { + return b.decisionToDFA +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_state.go b/vendor/github.com/antlr4-go/antlr/v4/atn_state.go new file mode 100644 index 0000000000..2ae5807cdb --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_state.go @@ -0,0 +1,461 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "os" + "strconv" +) + +// Constants for serialization. +const ( + ATNStateInvalidType = 0 + ATNStateBasic = 1 + ATNStateRuleStart = 2 + ATNStateBlockStart = 3 + ATNStatePlusBlockStart = 4 + ATNStateStarBlockStart = 5 + ATNStateTokenStart = 6 + ATNStateRuleStop = 7 + ATNStateBlockEnd = 8 + ATNStateStarLoopBack = 9 + ATNStateStarLoopEntry = 10 + ATNStatePlusLoopBack = 11 + ATNStateLoopEnd = 12 + + ATNStateInvalidStateNumber = -1 +) + +//goland:noinspection GoUnusedGlobalVariable +var ATNStateInitialNumTransitions = 4 + +type ATNState interface { + GetEpsilonOnlyTransitions() bool + + GetRuleIndex() int + SetRuleIndex(int) + + GetNextTokenWithinRule() *IntervalSet + SetNextTokenWithinRule(*IntervalSet) + + GetATN() *ATN + SetATN(*ATN) + + GetStateType() int + + GetStateNumber() int + SetStateNumber(int) + + GetTransitions() []Transition + SetTransitions([]Transition) + AddTransition(Transition, int) + + String() string + Hash() int + Equals(Collectable[ATNState]) bool +} + +type BaseATNState struct { + // NextTokenWithinRule caches lookahead during parsing. Not used during construction. + NextTokenWithinRule *IntervalSet + + // atn is the current ATN. + atn *ATN + + epsilonOnlyTransitions bool + + // ruleIndex tracks the Rule index because there are no Rule objects at runtime. + ruleIndex int + + stateNumber int + + stateType int + + // Track the transitions emanating from this ATN state. + transitions []Transition +} + +func NewATNState() *BaseATNState { + return &BaseATNState{stateNumber: ATNStateInvalidStateNumber, stateType: ATNStateInvalidType} +} + +func (as *BaseATNState) GetRuleIndex() int { + return as.ruleIndex +} + +func (as *BaseATNState) SetRuleIndex(v int) { + as.ruleIndex = v +} +func (as *BaseATNState) GetEpsilonOnlyTransitions() bool { + return as.epsilonOnlyTransitions +} + +func (as *BaseATNState) GetATN() *ATN { + return as.atn +} + +func (as *BaseATNState) SetATN(atn *ATN) { + as.atn = atn +} + +func (as *BaseATNState) GetTransitions() []Transition { + return as.transitions +} + +func (as *BaseATNState) SetTransitions(t []Transition) { + as.transitions = t +} + +func (as *BaseATNState) GetStateType() int { + return as.stateType +} + +func (as *BaseATNState) GetStateNumber() int { + return as.stateNumber +} + +func (as *BaseATNState) SetStateNumber(stateNumber int) { + as.stateNumber = stateNumber +} + +func (as *BaseATNState) GetNextTokenWithinRule() *IntervalSet { + return as.NextTokenWithinRule +} + +func (as *BaseATNState) SetNextTokenWithinRule(v *IntervalSet) { + as.NextTokenWithinRule = v +} + +func (as *BaseATNState) Hash() int { + return as.stateNumber +} + +func (as *BaseATNState) String() string { + return strconv.Itoa(as.stateNumber) +} + +func (as *BaseATNState) Equals(other Collectable[ATNState]) bool { + if ot, ok := other.(ATNState); ok { + return as.stateNumber == ot.GetStateNumber() + } + + return false +} + +func (as *BaseATNState) isNonGreedyExitState() bool { + return false +} + +func (as *BaseATNState) AddTransition(trans Transition, index int) { + if len(as.transitions) == 0 { + as.epsilonOnlyTransitions = trans.getIsEpsilon() + } else if as.epsilonOnlyTransitions != trans.getIsEpsilon() { + _, _ = fmt.Fprintf(os.Stdin, "ATN state %d has both epsilon and non-epsilon transitions.\n", as.stateNumber) + as.epsilonOnlyTransitions = false + } + + // TODO: Check code for already present compared to the Java equivalent + //alreadyPresent := false + //for _, t := range as.transitions { + // if t.getTarget().GetStateNumber() == trans.getTarget().GetStateNumber() { + // if t.getLabel() != nil && trans.getLabel() != nil && trans.getLabel().Equals(t.getLabel()) { + // alreadyPresent = true + // break + // } + // } else if t.getIsEpsilon() && trans.getIsEpsilon() { + // alreadyPresent = true + // break + // } + //} + //if !alreadyPresent { + if index == -1 { + as.transitions = append(as.transitions, trans) + } else { + as.transitions = append(as.transitions[:index], append([]Transition{trans}, as.transitions[index:]...)...) + // TODO: as.transitions.splice(index, 1, trans) + } + //} else { + // _, _ = fmt.Fprintf(os.Stderr, "Transition already present in state %d\n", as.stateNumber) + //} +} + +type BasicState struct { + BaseATNState +} + +func NewBasicState() *BasicState { + return &BasicState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateBasic, + }, + } +} + +type DecisionState interface { + ATNState + + getDecision() int + setDecision(int) + + getNonGreedy() bool + setNonGreedy(bool) +} + +type BaseDecisionState struct { + BaseATNState + decision int + nonGreedy bool +} + +func NewBaseDecisionState() *BaseDecisionState { + return &BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateBasic, + }, + decision: -1, + } +} + +func (s *BaseDecisionState) getDecision() int { + return s.decision +} + +func (s *BaseDecisionState) setDecision(b int) { + s.decision = b +} + +func (s *BaseDecisionState) getNonGreedy() bool { + return s.nonGreedy +} + +func (s *BaseDecisionState) setNonGreedy(b bool) { + s.nonGreedy = b +} + +type BlockStartState interface { + DecisionState + + getEndState() *BlockEndState + setEndState(*BlockEndState) +} + +// BaseBlockStartState is the start of a regular (...) block. +type BaseBlockStartState struct { + BaseDecisionState + endState *BlockEndState +} + +func NewBlockStartState() *BaseBlockStartState { + return &BaseBlockStartState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateBasic, + }, + decision: -1, + }, + } +} + +func (s *BaseBlockStartState) getEndState() *BlockEndState { + return s.endState +} + +func (s *BaseBlockStartState) setEndState(b *BlockEndState) { + s.endState = b +} + +type BasicBlockStartState struct { + BaseBlockStartState +} + +func NewBasicBlockStartState() *BasicBlockStartState { + return &BasicBlockStartState{ + BaseBlockStartState: BaseBlockStartState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateBlockStart, + }, + }, + }, + } +} + +var _ BlockStartState = &BasicBlockStartState{} + +// BlockEndState is a terminal node of a simple (a|b|c) block. +type BlockEndState struct { + BaseATNState + startState ATNState +} + +func NewBlockEndState() *BlockEndState { + return &BlockEndState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateBlockEnd, + }, + startState: nil, + } +} + +// RuleStopState is the last node in the ATN for a rule, unless that rule is the +// start symbol. In that case, there is one transition to EOF. Later, we might +// encode references to all calls to this rule to compute FOLLOW sets for error +// handling. +type RuleStopState struct { + BaseATNState +} + +func NewRuleStopState() *RuleStopState { + return &RuleStopState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateRuleStop, + }, + } +} + +type RuleStartState struct { + BaseATNState + stopState ATNState + isPrecedenceRule bool +} + +func NewRuleStartState() *RuleStartState { + return &RuleStartState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateRuleStart, + }, + } +} + +// PlusLoopbackState is a decision state for A+ and (A|B)+. It has two +// transitions: one to the loop back to start of the block, and one to exit. +type PlusLoopbackState struct { + BaseDecisionState +} + +func NewPlusLoopbackState() *PlusLoopbackState { + return &PlusLoopbackState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStatePlusLoopBack, + }, + }, + } +} + +// PlusBlockStartState is the start of a (A|B|...)+ loop. Technically it is a +// decision state; we don't use it for code generation. Somebody might need it, +// it is included for completeness. In reality, PlusLoopbackState is the real +// decision-making node for A+. +type PlusBlockStartState struct { + BaseBlockStartState + loopBackState ATNState +} + +func NewPlusBlockStartState() *PlusBlockStartState { + return &PlusBlockStartState{ + BaseBlockStartState: BaseBlockStartState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStatePlusBlockStart, + }, + }, + }, + } +} + +var _ BlockStartState = &PlusBlockStartState{} + +// StarBlockStartState is the block that begins a closure loop. +type StarBlockStartState struct { + BaseBlockStartState +} + +func NewStarBlockStartState() *StarBlockStartState { + return &StarBlockStartState{ + BaseBlockStartState: BaseBlockStartState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateStarBlockStart, + }, + }, + }, + } +} + +var _ BlockStartState = &StarBlockStartState{} + +type StarLoopbackState struct { + BaseATNState +} + +func NewStarLoopbackState() *StarLoopbackState { + return &StarLoopbackState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateStarLoopBack, + }, + } +} + +type StarLoopEntryState struct { + BaseDecisionState + loopBackState ATNState + precedenceRuleDecision bool +} + +func NewStarLoopEntryState() *StarLoopEntryState { + // False precedenceRuleDecision indicates whether s state can benefit from a precedence DFA during SLL decision making. + return &StarLoopEntryState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateStarLoopEntry, + }, + }, + } +} + +// LoopEndState marks the end of a * or + loop. +type LoopEndState struct { + BaseATNState + loopBackState ATNState +} + +func NewLoopEndState() *LoopEndState { + return &LoopEndState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateLoopEnd, + }, + } +} + +// TokensStartState is the Tokens rule start state linking to each lexer rule start state. +type TokensStartState struct { + BaseDecisionState +} + +func NewTokensStartState() *TokensStartState { + return &TokensStartState{ + BaseDecisionState: BaseDecisionState{ + BaseATNState: BaseATNState{ + stateNumber: ATNStateInvalidStateNumber, + stateType: ATNStateTokenStart, + }, + }, + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/atn_type.go b/vendor/github.com/antlr4-go/antlr/v4/atn_type.go new file mode 100644 index 0000000000..3a515a145f --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/atn_type.go @@ -0,0 +1,11 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// Represent the type of recognizer an ATN applies to. +const ( + ATNTypeLexer = 0 + ATNTypeParser = 1 +) diff --git a/vendor/github.com/antlr4-go/antlr/v4/char_stream.go b/vendor/github.com/antlr4-go/antlr/v4/char_stream.go new file mode 100644 index 0000000000..bd8127b6b5 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/char_stream.go @@ -0,0 +1,12 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +type CharStream interface { + IntStream + GetText(int, int) string + GetTextFromTokens(start, end Token) string + GetTextFromInterval(Interval) string +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/common_token_factory.go b/vendor/github.com/antlr4-go/antlr/v4/common_token_factory.go new file mode 100644 index 0000000000..1bb0314ea0 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/common_token_factory.go @@ -0,0 +1,56 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// TokenFactory creates CommonToken objects. +type TokenFactory interface { + Create(source *TokenSourceCharStreamPair, ttype int, text string, channel, start, stop, line, column int) Token +} + +// CommonTokenFactory is the default TokenFactory implementation. +type CommonTokenFactory struct { + // copyText indicates whether CommonToken.setText should be called after + // constructing tokens to explicitly set the text. This is useful for cases + // where the input stream might not be able to provide arbitrary substrings of + // text from the input after the lexer creates a token (e.g. the + // implementation of CharStream.GetText in UnbufferedCharStream panics an + // UnsupportedOperationException). Explicitly setting the token text allows + // Token.GetText to be called at any time regardless of the input stream + // implementation. + // + // The default value is false to avoid the performance and memory overhead of + // copying text for every token unless explicitly requested. + copyText bool +} + +func NewCommonTokenFactory(copyText bool) *CommonTokenFactory { + return &CommonTokenFactory{copyText: copyText} +} + +// CommonTokenFactoryDEFAULT is the default CommonTokenFactory. It does not +// explicitly copy token text when constructing tokens. +var CommonTokenFactoryDEFAULT = NewCommonTokenFactory(false) + +func (c *CommonTokenFactory) Create(source *TokenSourceCharStreamPair, ttype int, text string, channel, start, stop, line, column int) Token { + t := NewCommonToken(source, ttype, channel, start, stop) + + t.line = line + t.column = column + + if text != "" { + t.SetText(text) + } else if c.copyText && source.charStream != nil { + t.SetText(source.charStream.GetTextFromInterval(NewInterval(start, stop))) + } + + return t +} + +func (c *CommonTokenFactory) createThin(ttype int, text string) Token { + t := NewCommonToken(nil, ttype, TokenDefaultChannel, -1, -1) + t.SetText(text) + + return t +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/common_token_stream.go b/vendor/github.com/antlr4-go/antlr/v4/common_token_stream.go new file mode 100644 index 0000000000..b75da9df08 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/common_token_stream.go @@ -0,0 +1,450 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "strconv" +) + +// CommonTokenStream is an implementation of TokenStream that loads tokens from +// a TokenSource on-demand and places the tokens in a buffer to provide access +// to any previous token by index. This token stream ignores the value of +// Token.getChannel. If your parser requires the token stream filter tokens to +// only those on a particular channel, such as Token.DEFAULT_CHANNEL or +// Token.HIDDEN_CHANNEL, use a filtering token stream such a CommonTokenStream. +type CommonTokenStream struct { + channel int + + // fetchedEOF indicates whether the Token.EOF token has been fetched from + // tokenSource and added to tokens. This field improves performance for the + // following cases: + // + // consume: The lookahead check in consume to preven consuming the EOF symbol is + // optimized by checking the values of fetchedEOF and p instead of calling LA. + // + // fetch: The check to prevent adding multiple EOF symbols into tokens is + // trivial with bt field. + fetchedEOF bool + + // index into [tokens] of the current token (next token to consume). + // tokens[p] should be LT(1). It is set to -1 when the stream is first + // constructed or when SetTokenSource is called, indicating that the first token + // has not yet been fetched from the token source. For additional information, + // see the documentation of [IntStream] for a description of initializing methods. + index int + + // tokenSource is the [TokenSource] from which tokens for the bt stream are + // fetched. + tokenSource TokenSource + + // tokens contains all tokens fetched from the token source. The list is considered a + // complete view of the input once fetchedEOF is set to true. + tokens []Token +} + +// NewCommonTokenStream creates a new CommonTokenStream instance using the supplied lexer to produce +// tokens and will pull tokens from the given lexer channel. +func NewCommonTokenStream(lexer Lexer, channel int) *CommonTokenStream { + return &CommonTokenStream{ + channel: channel, + index: -1, + tokenSource: lexer, + tokens: make([]Token, 0), + } +} + +// GetAllTokens returns all tokens currently pulled from the token source. +func (c *CommonTokenStream) GetAllTokens() []Token { + return c.tokens +} + +func (c *CommonTokenStream) Mark() int { + return 0 +} + +func (c *CommonTokenStream) Release(_ int) {} + +func (c *CommonTokenStream) Reset() { + c.fetchedEOF = false + c.tokens = make([]Token, 0) + c.Seek(0) +} + +func (c *CommonTokenStream) Seek(index int) { + c.lazyInit() + c.index = c.adjustSeekIndex(index) +} + +func (c *CommonTokenStream) Get(index int) Token { + c.lazyInit() + + return c.tokens[index] +} + +func (c *CommonTokenStream) Consume() { + SkipEOFCheck := false + + if c.index >= 0 { + if c.fetchedEOF { + // The last token in tokens is EOF. Skip the check if p indexes any fetched. + // token except the last. + SkipEOFCheck = c.index < len(c.tokens)-1 + } else { + // No EOF token in tokens. Skip the check if p indexes a fetched token. + SkipEOFCheck = c.index < len(c.tokens) + } + } else { + // Not yet initialized + SkipEOFCheck = false + } + + if !SkipEOFCheck && c.LA(1) == TokenEOF { + panic("cannot consume EOF") + } + + if c.Sync(c.index + 1) { + c.index = c.adjustSeekIndex(c.index + 1) + } +} + +// Sync makes sure index i in tokens has a token and returns true if a token is +// located at index i and otherwise false. +func (c *CommonTokenStream) Sync(i int) bool { + n := i - len(c.tokens) + 1 // How many more elements do we need? + + if n > 0 { + fetched := c.fetch(n) + return fetched >= n + } + + return true +} + +// fetch adds n elements to buffer and returns the actual number of elements +// added to the buffer. +func (c *CommonTokenStream) fetch(n int) int { + if c.fetchedEOF { + return 0 + } + + for i := 0; i < n; i++ { + t := c.tokenSource.NextToken() + + t.SetTokenIndex(len(c.tokens)) + c.tokens = append(c.tokens, t) + + if t.GetTokenType() == TokenEOF { + c.fetchedEOF = true + + return i + 1 + } + } + + return n +} + +// GetTokens gets all tokens from start to stop inclusive. +func (c *CommonTokenStream) GetTokens(start int, stop int, types *IntervalSet) []Token { + if start < 0 || stop < 0 { + return nil + } + + c.lazyInit() + + subset := make([]Token, 0) + + if stop >= len(c.tokens) { + stop = len(c.tokens) - 1 + } + + for i := start; i < stop; i++ { + t := c.tokens[i] + + if t.GetTokenType() == TokenEOF { + break + } + + if types == nil || types.contains(t.GetTokenType()) { + subset = append(subset, t) + } + } + + return subset +} + +func (c *CommonTokenStream) LA(i int) int { + return c.LT(i).GetTokenType() +} + +func (c *CommonTokenStream) lazyInit() { + if c.index == -1 { + c.setup() + } +} + +func (c *CommonTokenStream) setup() { + c.Sync(0) + c.index = c.adjustSeekIndex(0) +} + +func (c *CommonTokenStream) GetTokenSource() TokenSource { + return c.tokenSource +} + +// SetTokenSource resets the c token stream by setting its token source. +func (c *CommonTokenStream) SetTokenSource(tokenSource TokenSource) { + c.tokenSource = tokenSource + c.tokens = make([]Token, 0) + c.index = -1 + c.fetchedEOF = false +} + +// NextTokenOnChannel returns the index of the next token on channel given a +// starting index. Returns i if tokens[i] is on channel. Returns -1 if there are +// no tokens on channel between 'i' and [TokenEOF]. +func (c *CommonTokenStream) NextTokenOnChannel(i, _ int) int { + c.Sync(i) + + if i >= len(c.tokens) { + return -1 + } + + token := c.tokens[i] + + for token.GetChannel() != c.channel { + if token.GetTokenType() == TokenEOF { + return -1 + } + + i++ + c.Sync(i) + token = c.tokens[i] + } + + return i +} + +// previousTokenOnChannel returns the index of the previous token on channel +// given a starting index. Returns i if tokens[i] is on channel. Returns -1 if +// there are no tokens on channel between i and 0. +func (c *CommonTokenStream) previousTokenOnChannel(i, channel int) int { + for i >= 0 && c.tokens[i].GetChannel() != channel { + i-- + } + + return i +} + +// GetHiddenTokensToRight collects all tokens on a specified channel to the +// right of the current token up until we see a token on DEFAULT_TOKEN_CHANNEL +// or EOF. If channel is -1, it finds any non-default channel token. +func (c *CommonTokenStream) GetHiddenTokensToRight(tokenIndex, channel int) []Token { + c.lazyInit() + + if tokenIndex < 0 || tokenIndex >= len(c.tokens) { + panic(strconv.Itoa(tokenIndex) + " not in 0.." + strconv.Itoa(len(c.tokens)-1)) + } + + nextOnChannel := c.NextTokenOnChannel(tokenIndex+1, LexerDefaultTokenChannel) + from := tokenIndex + 1 + + // If no onChannel to the right, then nextOnChannel == -1, so set 'to' to the last token + var to int + + if nextOnChannel == -1 { + to = len(c.tokens) - 1 + } else { + to = nextOnChannel + } + + return c.filterForChannel(from, to, channel) +} + +// GetHiddenTokensToLeft collects all tokens on channel to the left of the +// current token until we see a token on DEFAULT_TOKEN_CHANNEL. If channel is +// -1, it finds any non default channel token. +func (c *CommonTokenStream) GetHiddenTokensToLeft(tokenIndex, channel int) []Token { + c.lazyInit() + + if tokenIndex < 0 || tokenIndex >= len(c.tokens) { + panic(strconv.Itoa(tokenIndex) + " not in 0.." + strconv.Itoa(len(c.tokens)-1)) + } + + prevOnChannel := c.previousTokenOnChannel(tokenIndex-1, LexerDefaultTokenChannel) + + if prevOnChannel == tokenIndex-1 { + return nil + } + + // If there are none on channel to the left and prevOnChannel == -1 then from = 0 + from := prevOnChannel + 1 + to := tokenIndex - 1 + + return c.filterForChannel(from, to, channel) +} + +func (c *CommonTokenStream) filterForChannel(left, right, channel int) []Token { + hidden := make([]Token, 0) + + for i := left; i < right+1; i++ { + t := c.tokens[i] + + if channel == -1 { + if t.GetChannel() != LexerDefaultTokenChannel { + hidden = append(hidden, t) + } + } else if t.GetChannel() == channel { + hidden = append(hidden, t) + } + } + + if len(hidden) == 0 { + return nil + } + + return hidden +} + +func (c *CommonTokenStream) GetSourceName() string { + return c.tokenSource.GetSourceName() +} + +func (c *CommonTokenStream) Size() int { + return len(c.tokens) +} + +func (c *CommonTokenStream) Index() int { + return c.index +} + +func (c *CommonTokenStream) GetAllText() string { + c.Fill() + return c.GetTextFromInterval(NewInterval(0, len(c.tokens)-1)) +} + +func (c *CommonTokenStream) GetTextFromTokens(start, end Token) string { + if start == nil || end == nil { + return "" + } + + return c.GetTextFromInterval(NewInterval(start.GetTokenIndex(), end.GetTokenIndex())) +} + +func (c *CommonTokenStream) GetTextFromRuleContext(interval RuleContext) string { + return c.GetTextFromInterval(interval.GetSourceInterval()) +} + +func (c *CommonTokenStream) GetTextFromInterval(interval Interval) string { + c.lazyInit() + c.Sync(interval.Stop) + + start := interval.Start + stop := interval.Stop + + if start < 0 || stop < 0 { + return "" + } + + if stop >= len(c.tokens) { + stop = len(c.tokens) - 1 + } + + s := "" + + for i := start; i < stop+1; i++ { + t := c.tokens[i] + + if t.GetTokenType() == TokenEOF { + break + } + + s += t.GetText() + } + + return s +} + +// Fill gets all tokens from the lexer until EOF. +func (c *CommonTokenStream) Fill() { + c.lazyInit() + + for c.fetch(1000) == 1000 { + continue + } +} + +func (c *CommonTokenStream) adjustSeekIndex(i int) int { + return c.NextTokenOnChannel(i, c.channel) +} + +func (c *CommonTokenStream) LB(k int) Token { + if k == 0 || c.index-k < 0 { + return nil + } + + i := c.index + n := 1 + + // Find k good tokens looking backward + for n <= k { + // Skip off-channel tokens + i = c.previousTokenOnChannel(i-1, c.channel) + n++ + } + + if i < 0 { + return nil + } + + return c.tokens[i] +} + +func (c *CommonTokenStream) LT(k int) Token { + c.lazyInit() + + if k == 0 { + return nil + } + + if k < 0 { + return c.LB(-k) + } + + i := c.index + n := 1 // We know tokens[n] is valid + + // Find k good tokens + for n < k { + // Skip off-channel tokens, but make sure to not look past EOF + if c.Sync(i + 1) { + i = c.NextTokenOnChannel(i+1, c.channel) + } + + n++ + } + + return c.tokens[i] +} + +// getNumberOfOnChannelTokens counts EOF once. +func (c *CommonTokenStream) getNumberOfOnChannelTokens() int { + var n int + + c.Fill() + + for i := 0; i < len(c.tokens); i++ { + t := c.tokens[i] + + if t.GetChannel() == c.channel { + n++ + } + + if t.GetTokenType() == TokenEOF { + break + } + } + + return n +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/comparators.go b/vendor/github.com/antlr4-go/antlr/v4/comparators.go new file mode 100644 index 0000000000..7467e9b43d --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/comparators.go @@ -0,0 +1,150 @@ +package antlr + +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +// This file contains all the implementations of custom comparators used for generic collections when the +// Hash() and Equals() funcs supplied by the struct objects themselves need to be overridden. Normally, we would +// put the comparators in the source file for the struct themselves, but given the organization of this code is +// sorta kinda based upon the Java code, I found it confusing trying to find out which comparator was where and used by +// which instantiation of a collection. For instance, an Array2DHashSet in the Java source, when used with ATNConfig +// collections requires three different comparators depending on what the collection is being used for. Collecting - pun intended - +// all the comparators here, makes it much easier to see which implementation of hash and equals is used by which collection. +// It also makes it easy to verify that the Hash() and Equals() functions marry up with the Java implementations. + +// ObjEqComparator is the equivalent of the Java ObjectEqualityComparator, which is the default instance of +// Equality comparator. We do not have inheritance in Go, only interfaces, so we use generics to enforce some +// type safety and avoid having to implement this for every type that we want to perform comparison on. +// +// This comparator works by using the standard Hash() and Equals() methods of the type T that is being compared. Which +// allows us to use it in any collection instance that does not require a special hash or equals implementation. +type ObjEqComparator[T Collectable[T]] struct{} + +var ( + aStateEqInst = &ObjEqComparator[ATNState]{} + aConfEqInst = &ObjEqComparator[*ATNConfig]{} + + // aConfCompInst is the comparator used for the ATNConfigSet for the configLookup cache + aConfCompInst = &ATNConfigComparator[*ATNConfig]{} + atnConfCompInst = &BaseATNConfigComparator[*ATNConfig]{} + dfaStateEqInst = &ObjEqComparator[*DFAState]{} + semctxEqInst = &ObjEqComparator[SemanticContext]{} + atnAltCfgEqInst = &ATNAltConfigComparator[*ATNConfig]{} + pContextEqInst = &ObjEqComparator[*PredictionContext]{} +) + +// Equals2 delegates to the Equals() method of type T +func (c *ObjEqComparator[T]) Equals2(o1, o2 T) bool { + return o1.Equals(o2) +} + +// Hash1 delegates to the Hash() method of type T +func (c *ObjEqComparator[T]) Hash1(o T) int { + + return o.Hash() +} + +type SemCComparator[T Collectable[T]] struct{} + +// ATNConfigComparator is used as the comparator for the configLookup field of an ATNConfigSet +// and has a custom Equals() and Hash() implementation, because equality is not based on the +// standard Hash() and Equals() methods of the ATNConfig type. +type ATNConfigComparator[T Collectable[T]] struct { +} + +// Equals2 is a custom comparator for ATNConfigs specifically for configLookup +func (c *ATNConfigComparator[T]) Equals2(o1, o2 *ATNConfig) bool { + + // Same pointer, must be equal, even if both nil + // + if o1 == o2 { + return true + + } + + // If either are nil, but not both, then the result is false + // + if o1 == nil || o2 == nil { + return false + } + + return o1.GetState().GetStateNumber() == o2.GetState().GetStateNumber() && + o1.GetAlt() == o2.GetAlt() && + o1.GetSemanticContext().Equals(o2.GetSemanticContext()) +} + +// Hash1 is custom hash implementation for ATNConfigs specifically for configLookup +func (c *ATNConfigComparator[T]) Hash1(o *ATNConfig) int { + + hash := 7 + hash = 31*hash + o.GetState().GetStateNumber() + hash = 31*hash + o.GetAlt() + hash = 31*hash + o.GetSemanticContext().Hash() + return hash +} + +// ATNAltConfigComparator is used as the comparator for mapping configs to Alt Bitsets +type ATNAltConfigComparator[T Collectable[T]] struct { +} + +// Equals2 is a custom comparator for ATNConfigs specifically for configLookup +func (c *ATNAltConfigComparator[T]) Equals2(o1, o2 *ATNConfig) bool { + + // Same pointer, must be equal, even if both nil + // + if o1 == o2 { + return true + + } + + // If either are nil, but not both, then the result is false + // + if o1 == nil || o2 == nil { + return false + } + + return o1.GetState().GetStateNumber() == o2.GetState().GetStateNumber() && + o1.GetContext().Equals(o2.GetContext()) +} + +// Hash1 is custom hash implementation for ATNConfigs specifically for configLookup +func (c *ATNAltConfigComparator[T]) Hash1(o *ATNConfig) int { + h := murmurInit(7) + h = murmurUpdate(h, o.GetState().GetStateNumber()) + h = murmurUpdate(h, o.GetContext().Hash()) + return murmurFinish(h, 2) +} + +// BaseATNConfigComparator is used as the comparator for the configLookup field of a ATNConfigSet +// and has a custom Equals() and Hash() implementation, because equality is not based on the +// standard Hash() and Equals() methods of the ATNConfig type. +type BaseATNConfigComparator[T Collectable[T]] struct { +} + +// Equals2 is a custom comparator for ATNConfigs specifically for baseATNConfigSet +func (c *BaseATNConfigComparator[T]) Equals2(o1, o2 *ATNConfig) bool { + + // Same pointer, must be equal, even if both nil + // + if o1 == o2 { + return true + + } + + // If either are nil, but not both, then the result is false + // + if o1 == nil || o2 == nil { + return false + } + + return o1.GetState().GetStateNumber() == o2.GetState().GetStateNumber() && + o1.GetAlt() == o2.GetAlt() && + o1.GetSemanticContext().Equals(o2.GetSemanticContext()) +} + +// Hash1 is custom hash implementation for ATNConfigs specifically for configLookup, but in fact just +// delegates to the standard Hash() method of the ATNConfig type. +func (c *BaseATNConfigComparator[T]) Hash1(o *ATNConfig) int { + return o.Hash() +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/configuration.go b/vendor/github.com/antlr4-go/antlr/v4/configuration.go new file mode 100644 index 0000000000..c2b724514d --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/configuration.go @@ -0,0 +1,214 @@ +package antlr + +type runtimeConfiguration struct { + statsTraceStacks bool + lexerATNSimulatorDebug bool + lexerATNSimulatorDFADebug bool + parserATNSimulatorDebug bool + parserATNSimulatorTraceATNSim bool + parserATNSimulatorDFADebug bool + parserATNSimulatorRetryDebug bool + lRLoopEntryBranchOpt bool + memoryManager bool +} + +// Global runtime configuration +var runtimeConfig = runtimeConfiguration{ + lRLoopEntryBranchOpt: true, +} + +type runtimeOption func(*runtimeConfiguration) error + +// ConfigureRuntime allows the runtime to be configured globally setting things like trace and statistics options. +// It uses the functional options pattern for go. This is a package global function as it operates on the runtime +// configuration regardless of the instantiation of anything higher up such as a parser or lexer. Generally this is +// used for debugging/tracing/statistics options, which are usually used by the runtime maintainers (or rather the +// only maintainer). However, it is possible that you might want to use this to set a global option concerning the +// memory allocation type used by the runtime such as sync.Pool or not. +// +// The options are applied in the order they are passed in, so the last option will override any previous options. +// +// For example, if you want to turn on the collection create point stack flag to true, you can do: +// +// antlr.ConfigureRuntime(antlr.WithStatsTraceStacks(true)) +// +// If you want to turn it off, you can do: +// +// antlr.ConfigureRuntime(antlr.WithStatsTraceStacks(false)) +func ConfigureRuntime(options ...runtimeOption) error { + for _, option := range options { + err := option(&runtimeConfig) + if err != nil { + return err + } + } + return nil +} + +// WithStatsTraceStacks sets the global flag indicating whether to collect stack traces at the create-point of +// certain structs, such as collections, or the use point of certain methods such as Put(). +// Because this can be expensive, it is turned off by default. However, it +// can be useful to track down exactly where memory is being created and used. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithStatsTraceStacks(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithStatsTraceStacks(false)) +func WithStatsTraceStacks(trace bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.statsTraceStacks = trace + return nil + } +} + +// WithLexerATNSimulatorDebug sets the global flag indicating whether to log debug information from the lexer [ATN] +// simulator. This is useful for debugging lexer issues by comparing the output with the Java runtime. Only useful +// to the runtime maintainers. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithLexerATNSimulatorDebug(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithLexerATNSimulatorDebug(false)) +func WithLexerATNSimulatorDebug(debug bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.lexerATNSimulatorDebug = debug + return nil + } +} + +// WithLexerATNSimulatorDFADebug sets the global flag indicating whether to log debug information from the lexer [ATN] [DFA] +// simulator. This is useful for debugging lexer issues by comparing the output with the Java runtime. Only useful +// to the runtime maintainers. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithLexerATNSimulatorDFADebug(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithLexerATNSimulatorDFADebug(false)) +func WithLexerATNSimulatorDFADebug(debug bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.lexerATNSimulatorDFADebug = debug + return nil + } +} + +// WithParserATNSimulatorDebug sets the global flag indicating whether to log debug information from the parser [ATN] +// simulator. This is useful for debugging parser issues by comparing the output with the Java runtime. Only useful +// to the runtime maintainers. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorDebug(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorDebug(false)) +func WithParserATNSimulatorDebug(debug bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.parserATNSimulatorDebug = debug + return nil + } +} + +// WithParserATNSimulatorTraceATNSim sets the global flag indicating whether to log trace information from the parser [ATN] simulator +// [DFA]. This is useful for debugging parser issues by comparing the output with the Java runtime. Only useful +// to the runtime maintainers. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorTraceATNSim(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorTraceATNSim(false)) +func WithParserATNSimulatorTraceATNSim(trace bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.parserATNSimulatorTraceATNSim = trace + return nil + } +} + +// WithParserATNSimulatorDFADebug sets the global flag indicating whether to log debug information from the parser [ATN] [DFA] +// simulator. This is useful for debugging parser issues by comparing the output with the Java runtime. Only useful +// to the runtime maintainers. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorDFADebug(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorDFADebug(false)) +func WithParserATNSimulatorDFADebug(debug bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.parserATNSimulatorDFADebug = debug + return nil + } +} + +// WithParserATNSimulatorRetryDebug sets the global flag indicating whether to log debug information from the parser [ATN] [DFA] +// simulator when retrying a decision. This is useful for debugging parser issues by comparing the output with the Java runtime. +// Only useful to the runtime maintainers. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorRetryDebug(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithParserATNSimulatorRetryDebug(false)) +func WithParserATNSimulatorRetryDebug(debug bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.parserATNSimulatorRetryDebug = debug + return nil + } +} + +// WithLRLoopEntryBranchOpt sets the global flag indicating whether let recursive loop operations should be +// optimized or not. This is useful for debugging parser issues by comparing the output with the Java runtime. +// It turns off the functionality of [canDropLoopEntryEdgeInLeftRecursiveRule] in [ParserATNSimulator]. +// +// Note that default is to use this optimization. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithLRLoopEntryBranchOpt(true)) +// +// You can turn it off at any time using: +// +// antlr.ConfigureRuntime(antlr.WithLRLoopEntryBranchOpt(false)) +func WithLRLoopEntryBranchOpt(off bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.lRLoopEntryBranchOpt = off + return nil + } +} + +// WithMemoryManager sets the global flag indicating whether to use the memory manager or not. This is useful +// for poorly constructed grammars that create a lot of garbage. It turns on the functionality of [memoryManager], which +// will intercept garbage collection and cause available memory to be reused. At the end of the day, this is no substitute +// for fixing your grammar by ridding yourself of extreme ambiguity. BUt if you are just trying to reuse an opensource +// grammar, this may help make it more practical. +// +// Note that default is to use normal Go memory allocation and not pool memory. +// +// Use: +// +// antlr.ConfigureRuntime(antlr.WithMemoryManager(true)) +// +// Note that if you turn this on, you should probably leave it on. You should use only one memory strategy or the other +// and should remember to nil out any references to the parser or lexer when you are done with them. +func WithMemoryManager(use bool) runtimeOption { + return func(config *runtimeConfiguration) error { + config.memoryManager = use + return nil + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/dfa.go b/vendor/github.com/antlr4-go/antlr/v4/dfa.go new file mode 100644 index 0000000000..6b63eb1589 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/dfa.go @@ -0,0 +1,175 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// DFA represents the Deterministic Finite Automaton used by the recognizer, including all the states it can +// reach and the transitions between them. +type DFA struct { + // atnStartState is the ATN state in which this was created + atnStartState DecisionState + + decision int + + // states is all the DFA states. Use Map to get the old state back; Set can only + // indicate whether it is there. Go maps implement key hash collisions and so on and are very + // good, but the DFAState is an object and can't be used directly as the key as it can in say Java + // amd C#, whereby if the hashcode is the same for two objects, then Equals() is called against them + // to see if they really are the same object. Hence, we have our own map storage. + // + states *JStore[*DFAState, *ObjEqComparator[*DFAState]] + + numstates int + + s0 *DFAState + + // precedenceDfa is the backing field for isPrecedenceDfa and setPrecedenceDfa. + // True if the DFA is for a precedence decision and false otherwise. + precedenceDfa bool +} + +func NewDFA(atnStartState DecisionState, decision int) *DFA { + dfa := &DFA{ + atnStartState: atnStartState, + decision: decision, + states: nil, // Lazy initialize + } + if s, ok := atnStartState.(*StarLoopEntryState); ok && s.precedenceRuleDecision { + dfa.precedenceDfa = true + dfa.s0 = NewDFAState(-1, NewATNConfigSet(false)) + dfa.s0.isAcceptState = false + dfa.s0.requiresFullContext = false + } + return dfa +} + +// getPrecedenceStartState gets the start state for the current precedence and +// returns the start state corresponding to the specified precedence if a start +// state exists for the specified precedence and nil otherwise. d must be a +// precedence DFA. See also isPrecedenceDfa. +func (d *DFA) getPrecedenceStartState(precedence int) *DFAState { + if !d.getPrecedenceDfa() { + panic("only precedence DFAs may contain a precedence start state") + } + + // s0.edges is never nil for a precedence DFA + if precedence < 0 || precedence >= len(d.getS0().getEdges()) { + return nil + } + + return d.getS0().getIthEdge(precedence) +} + +// setPrecedenceStartState sets the start state for the current precedence. d +// must be a precedence DFA. See also isPrecedenceDfa. +func (d *DFA) setPrecedenceStartState(precedence int, startState *DFAState) { + if !d.getPrecedenceDfa() { + panic("only precedence DFAs may contain a precedence start state") + } + + if precedence < 0 { + return + } + + // Synchronization on s0 here is ok. When the DFA is turned into a + // precedence DFA, s0 will be initialized once and not updated again. s0.edges + // is never nil for a precedence DFA. + s0 := d.getS0() + if precedence >= s0.numEdges() { + edges := append(s0.getEdges(), make([]*DFAState, precedence+1-s0.numEdges())...) + s0.setEdges(edges) + d.setS0(s0) + } + + s0.setIthEdge(precedence, startState) +} + +func (d *DFA) getPrecedenceDfa() bool { + return d.precedenceDfa +} + +// setPrecedenceDfa sets whether d is a precedence DFA. If precedenceDfa differs +// from the current DFA configuration, then d.states is cleared, the initial +// state s0 is set to a new DFAState with an empty outgoing DFAState.edges to +// store the start states for individual precedence values if precedenceDfa is +// true or nil otherwise, and d.precedenceDfa is updated. +func (d *DFA) setPrecedenceDfa(precedenceDfa bool) { + if d.getPrecedenceDfa() != precedenceDfa { + d.states = nil // Lazy initialize + d.numstates = 0 + + if precedenceDfa { + precedenceState := NewDFAState(-1, NewATNConfigSet(false)) + precedenceState.setEdges(make([]*DFAState, 0)) + precedenceState.isAcceptState = false + precedenceState.requiresFullContext = false + d.setS0(precedenceState) + } else { + d.setS0(nil) + } + + d.precedenceDfa = precedenceDfa + } +} + +// Len returns the number of states in d. We use this instead of accessing states directly so that we can implement lazy +// instantiation of the states JMap. +func (d *DFA) Len() int { + if d.states == nil { + return 0 + } + return d.states.Len() +} + +// Get returns a state that matches s if it is present in the DFA state set. We defer to this +// function instead of accessing states directly so that we can implement lazy instantiation of the states JMap. +func (d *DFA) Get(s *DFAState) (*DFAState, bool) { + if d.states == nil { + return nil, false + } + return d.states.Get(s) +} + +func (d *DFA) Put(s *DFAState) (*DFAState, bool) { + if d.states == nil { + d.states = NewJStore[*DFAState, *ObjEqComparator[*DFAState]](dfaStateEqInst, DFAStateCollection, "DFA via DFA.Put") + } + return d.states.Put(s) +} + +func (d *DFA) getS0() *DFAState { + return d.s0 +} + +func (d *DFA) setS0(s *DFAState) { + d.s0 = s +} + +// sortedStates returns the states in d sorted by their state number, or an empty set if d.states is nil. +func (d *DFA) sortedStates() []*DFAState { + if d.states == nil { + return []*DFAState{} + } + vs := d.states.SortedSlice(func(i, j *DFAState) bool { + return i.stateNumber < j.stateNumber + }) + + return vs +} + +func (d *DFA) String(literalNames []string, symbolicNames []string) string { + if d.getS0() == nil { + return "" + } + + return NewDFASerializer(d, literalNames, symbolicNames).String() +} + +func (d *DFA) ToLexerString() string { + if d.getS0() == nil { + return "" + } + + return NewLexerDFASerializer(d).String() +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/dfa_serializer.go b/vendor/github.com/antlr4-go/antlr/v4/dfa_serializer.go new file mode 100644 index 0000000000..0e11009899 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/dfa_serializer.go @@ -0,0 +1,158 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" + "strings" +) + +// DFASerializer is a DFA walker that knows how to dump the DFA states to serialized +// strings. +type DFASerializer struct { + dfa *DFA + literalNames []string + symbolicNames []string +} + +func NewDFASerializer(dfa *DFA, literalNames, symbolicNames []string) *DFASerializer { + if literalNames == nil { + literalNames = make([]string, 0) + } + + if symbolicNames == nil { + symbolicNames = make([]string, 0) + } + + return &DFASerializer{ + dfa: dfa, + literalNames: literalNames, + symbolicNames: symbolicNames, + } +} + +func (d *DFASerializer) String() string { + if d.dfa.getS0() == nil { + return "" + } + + buf := "" + states := d.dfa.sortedStates() + + for _, s := range states { + if s.edges != nil { + n := len(s.edges) + + for j := 0; j < n; j++ { + t := s.edges[j] + + if t != nil && t.stateNumber != 0x7FFFFFFF { + buf += d.GetStateString(s) + buf += "-" + buf += d.getEdgeLabel(j) + buf += "->" + buf += d.GetStateString(t) + buf += "\n" + } + } + } + } + + if len(buf) == 0 { + return "" + } + + return buf +} + +func (d *DFASerializer) getEdgeLabel(i int) string { + if i == 0 { + return "EOF" + } else if d.literalNames != nil && i-1 < len(d.literalNames) { + return d.literalNames[i-1] + } else if d.symbolicNames != nil && i-1 < len(d.symbolicNames) { + return d.symbolicNames[i-1] + } + + return strconv.Itoa(i - 1) +} + +func (d *DFASerializer) GetStateString(s *DFAState) string { + var a, b string + + if s.isAcceptState { + a = ":" + } + + if s.requiresFullContext { + b = "^" + } + + baseStateStr := a + "s" + strconv.Itoa(s.stateNumber) + b + + if s.isAcceptState { + if s.predicates != nil { + return baseStateStr + "=>" + fmt.Sprint(s.predicates) + } + + return baseStateStr + "=>" + fmt.Sprint(s.prediction) + } + + return baseStateStr +} + +type LexerDFASerializer struct { + *DFASerializer +} + +func NewLexerDFASerializer(dfa *DFA) *LexerDFASerializer { + return &LexerDFASerializer{DFASerializer: NewDFASerializer(dfa, nil, nil)} +} + +func (l *LexerDFASerializer) getEdgeLabel(i int) string { + var sb strings.Builder + sb.Grow(6) + sb.WriteByte('\'') + sb.WriteRune(rune(i)) + sb.WriteByte('\'') + return sb.String() +} + +func (l *LexerDFASerializer) String() string { + if l.dfa.getS0() == nil { + return "" + } + + buf := "" + states := l.dfa.sortedStates() + + for i := 0; i < len(states); i++ { + s := states[i] + + if s.edges != nil { + n := len(s.edges) + + for j := 0; j < n; j++ { + t := s.edges[j] + + if t != nil && t.stateNumber != 0x7FFFFFFF { + buf += l.GetStateString(s) + buf += "-" + buf += l.getEdgeLabel(j) + buf += "->" + buf += l.GetStateString(t) + buf += "\n" + } + } + } + } + + if len(buf) == 0 { + return "" + } + + return buf +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/dfa_state.go b/vendor/github.com/antlr4-go/antlr/v4/dfa_state.go new file mode 100644 index 0000000000..6541430745 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/dfa_state.go @@ -0,0 +1,170 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" +) + +// PredPrediction maps a predicate to a predicted alternative. +type PredPrediction struct { + alt int + pred SemanticContext +} + +func NewPredPrediction(pred SemanticContext, alt int) *PredPrediction { + return &PredPrediction{alt: alt, pred: pred} +} + +func (p *PredPrediction) String() string { + return "(" + fmt.Sprint(p.pred) + ", " + fmt.Sprint(p.alt) + ")" +} + +// DFAState represents a set of possible [ATN] configurations. As Aho, Sethi, +// Ullman p. 117 says: "The DFA uses its state to keep track of all possible +// states the ATN can be in after reading each input symbol. That is to say, +// after reading input a1, a2,..an, the DFA is in a state that represents the +// subset T of the states of the ATN that are reachable from the ATN's start +// state along some path labeled a1a2..an." +// +// In conventional NFA-to-DFA conversion, therefore, the subset T would be a bitset representing the set of +// states the [ATN] could be in. We need to track the alt predicted by each state +// as well, however. More importantly, we need to maintain a stack of states, +// tracking the closure operations as they jump from rule to rule, emulating +// rule invocations (method calls). I have to add a stack to simulate the proper +// lookahead sequences for the underlying LL grammar from which the ATN was +// derived. +// +// I use a set of [ATNConfig] objects, not simple states. An [ATNConfig] is both a +// state (ala normal conversion) and a [RuleContext] describing the chain of rules +// (if any) followed to arrive at that state. +// +// A [DFAState] may have multiple references to a particular state, but with +// different [ATN] contexts (with same or different alts) meaning that state was +// reached via a different set of rule invocations. +type DFAState struct { + stateNumber int + configs *ATNConfigSet + + // edges elements point to the target of the symbol. Shift up by 1 so (-1) + // Token.EOF maps to the first element. + edges []*DFAState + + isAcceptState bool + + // prediction is the 'ttype' we match or alt we predict if the state is 'accept'. + // Set to ATN.INVALID_ALT_NUMBER when predicates != nil or + // requiresFullContext. + prediction int + + lexerActionExecutor *LexerActionExecutor + + // requiresFullContext indicates it was created during an SLL prediction that + // discovered a conflict between the configurations in the state. Future + // ParserATNSimulator.execATN invocations immediately jump doing + // full context prediction if true. + requiresFullContext bool + + // predicates is the predicates associated with the ATN configurations of the + // DFA state during SLL parsing. When we have predicates, requiresFullContext + // is false, since full context prediction evaluates predicates on-the-fly. If + // d is + // not nil, then prediction is ATN.INVALID_ALT_NUMBER. + // + // We only use these for non-requiresFullContext but conflicting states. That + // means we know from the context (it's $ or we don't dip into outer context) + // that it's an ambiguity not a conflict. + // + // This list is computed by + // ParserATNSimulator.predicateDFAState. + predicates []*PredPrediction +} + +func NewDFAState(stateNumber int, configs *ATNConfigSet) *DFAState { + if configs == nil { + configs = NewATNConfigSet(false) + } + + return &DFAState{configs: configs, stateNumber: stateNumber} +} + +// GetAltSet gets the set of all alts mentioned by all ATN configurations in d. +func (d *DFAState) GetAltSet() []int { + var alts []int + + if d.configs != nil { + for _, c := range d.configs.configs { + alts = append(alts, c.GetAlt()) + } + } + + if len(alts) == 0 { + return nil + } + + return alts +} + +func (d *DFAState) getEdges() []*DFAState { + return d.edges +} + +func (d *DFAState) numEdges() int { + return len(d.edges) +} + +func (d *DFAState) getIthEdge(i int) *DFAState { + return d.edges[i] +} + +func (d *DFAState) setEdges(newEdges []*DFAState) { + d.edges = newEdges +} + +func (d *DFAState) setIthEdge(i int, edge *DFAState) { + d.edges[i] = edge +} + +func (d *DFAState) setPrediction(v int) { + d.prediction = v +} + +func (d *DFAState) String() string { + var s string + if d.isAcceptState { + if d.predicates != nil { + s = "=>" + fmt.Sprint(d.predicates) + } else { + s = "=>" + fmt.Sprint(d.prediction) + } + } + + return fmt.Sprintf("%d:%s%s", d.stateNumber, fmt.Sprint(d.configs), s) +} + +func (d *DFAState) Hash() int { + h := murmurInit(7) + h = murmurUpdate(h, d.configs.Hash()) + return murmurFinish(h, 1) +} + +// Equals returns whether d equals other. Two DFAStates are equal if their ATN +// configuration sets are the same. This method is used to see if a state +// already exists. +// +// Because the number of alternatives and number of ATN configurations are +// finite, there is a finite number of DFA states that can be processed. This is +// necessary to show that the algorithm terminates. +// +// Cannot test the DFA state numbers here because in +// ParserATNSimulator.addDFAState we need to know if any other state exists that +// has d exact set of ATN configurations. The stateNumber is irrelevant. +func (d *DFAState) Equals(o Collectable[*DFAState]) bool { + if d == o { + return true + } + + return d.configs.Equals(o.(*DFAState).configs) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/diagnostic_error_listener.go b/vendor/github.com/antlr4-go/antlr/v4/diagnostic_error_listener.go new file mode 100644 index 0000000000..bd2cd8bc3a --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/diagnostic_error_listener.go @@ -0,0 +1,110 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "strconv" +) + +// +// This implementation of {@link ANTLRErrorListener} can be used to identify +// certain potential correctness and performance problems in grammars. "reports" +// are made by calling {@link Parser//NotifyErrorListeners} with the appropriate +// message. +// +//
    +//
  • Ambiguities: These are cases where more than one path through the +// grammar can Match the input.
    • +//
  • Weak context sensitivity: These are cases where full-context +// prediction resolved an SLL conflict to a unique alternative which equaled the +// minimum alternative of the SLL conflict.
    • +//
  • Strong (forced) context sensitivity: These are cases where the +// full-context prediction resolved an SLL conflict to a unique alternative, +// and the minimum alternative of the SLL conflict was found to not be +// a truly viable alternative. Two-stage parsing cannot be used for inputs where +// d situation occurs.
    • +//
+ +type DiagnosticErrorListener struct { + *DefaultErrorListener + + exactOnly bool +} + +//goland:noinspection GoUnusedExportedFunction +func NewDiagnosticErrorListener(exactOnly bool) *DiagnosticErrorListener { + + n := new(DiagnosticErrorListener) + + // whether all ambiguities or only exact ambiguities are Reported. + n.exactOnly = exactOnly + return n +} + +func (d *DiagnosticErrorListener) ReportAmbiguity(recognizer Parser, dfa *DFA, startIndex, stopIndex int, exact bool, ambigAlts *BitSet, configs *ATNConfigSet) { + if d.exactOnly && !exact { + return + } + msg := "reportAmbiguity d=" + + d.getDecisionDescription(recognizer, dfa) + + ": ambigAlts=" + + d.getConflictingAlts(ambigAlts, configs).String() + + ", input='" + + recognizer.GetTokenStream().GetTextFromInterval(NewInterval(startIndex, stopIndex)) + "'" + recognizer.NotifyErrorListeners(msg, nil, nil) +} + +func (d *DiagnosticErrorListener) ReportAttemptingFullContext(recognizer Parser, dfa *DFA, startIndex, stopIndex int, _ *BitSet, _ *ATNConfigSet) { + + msg := "reportAttemptingFullContext d=" + + d.getDecisionDescription(recognizer, dfa) + + ", input='" + + recognizer.GetTokenStream().GetTextFromInterval(NewInterval(startIndex, stopIndex)) + "'" + recognizer.NotifyErrorListeners(msg, nil, nil) +} + +func (d *DiagnosticErrorListener) ReportContextSensitivity(recognizer Parser, dfa *DFA, startIndex, stopIndex, _ int, _ *ATNConfigSet) { + msg := "reportContextSensitivity d=" + + d.getDecisionDescription(recognizer, dfa) + + ", input='" + + recognizer.GetTokenStream().GetTextFromInterval(NewInterval(startIndex, stopIndex)) + "'" + recognizer.NotifyErrorListeners(msg, nil, nil) +} + +func (d *DiagnosticErrorListener) getDecisionDescription(recognizer Parser, dfa *DFA) string { + decision := dfa.decision + ruleIndex := dfa.atnStartState.GetRuleIndex() + + ruleNames := recognizer.GetRuleNames() + if ruleIndex < 0 || ruleIndex >= len(ruleNames) { + return strconv.Itoa(decision) + } + ruleName := ruleNames[ruleIndex] + if ruleName == "" { + return strconv.Itoa(decision) + } + return strconv.Itoa(decision) + " (" + ruleName + ")" +} + +// Computes the set of conflicting or ambiguous alternatives from a +// configuration set, if that information was not already provided by the +// parser. +// +// @param ReportedAlts The set of conflicting or ambiguous alternatives, as +// Reported by the parser. +// @param configs The conflicting or ambiguous configuration set. +// @return Returns {@code ReportedAlts} if it is not {@code nil}, otherwise +// returns the set of alternatives represented in {@code configs}. +func (d *DiagnosticErrorListener) getConflictingAlts(ReportedAlts *BitSet, set *ATNConfigSet) *BitSet { + if ReportedAlts != nil { + return ReportedAlts + } + result := NewBitSet() + for _, c := range set.configs { + result.add(c.GetAlt()) + } + + return result +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/error_listener.go b/vendor/github.com/antlr4-go/antlr/v4/error_listener.go new file mode 100644 index 0000000000..21a0216434 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/error_listener.go @@ -0,0 +1,100 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "os" + "strconv" +) + +// Provides an empty default implementation of {@link ANTLRErrorListener}. The +// default implementation of each method does nothing, but can be overridden as +// necessary. + +type ErrorListener interface { + SyntaxError(recognizer Recognizer, offendingSymbol interface{}, line, column int, msg string, e RecognitionException) + ReportAmbiguity(recognizer Parser, dfa *DFA, startIndex, stopIndex int, exact bool, ambigAlts *BitSet, configs *ATNConfigSet) + ReportAttemptingFullContext(recognizer Parser, dfa *DFA, startIndex, stopIndex int, conflictingAlts *BitSet, configs *ATNConfigSet) + ReportContextSensitivity(recognizer Parser, dfa *DFA, startIndex, stopIndex, prediction int, configs *ATNConfigSet) +} + +type DefaultErrorListener struct { +} + +//goland:noinspection GoUnusedExportedFunction +func NewDefaultErrorListener() *DefaultErrorListener { + return new(DefaultErrorListener) +} + +func (d *DefaultErrorListener) SyntaxError(_ Recognizer, _ interface{}, _, _ int, _ string, _ RecognitionException) { +} + +func (d *DefaultErrorListener) ReportAmbiguity(_ Parser, _ *DFA, _, _ int, _ bool, _ *BitSet, _ *ATNConfigSet) { +} + +func (d *DefaultErrorListener) ReportAttemptingFullContext(_ Parser, _ *DFA, _, _ int, _ *BitSet, _ *ATNConfigSet) { +} + +func (d *DefaultErrorListener) ReportContextSensitivity(_ Parser, _ *DFA, _, _, _ int, _ *ATNConfigSet) { +} + +type ConsoleErrorListener struct { + *DefaultErrorListener +} + +func NewConsoleErrorListener() *ConsoleErrorListener { + return new(ConsoleErrorListener) +} + +// ConsoleErrorListenerINSTANCE provides a default instance of {@link ConsoleErrorListener}. +var ConsoleErrorListenerINSTANCE = NewConsoleErrorListener() + +// SyntaxError prints messages to System.err containing the +// values of line, charPositionInLine, and msg using +// the following format: +// +// line : +func (c *ConsoleErrorListener) SyntaxError(_ Recognizer, _ interface{}, line, column int, msg string, _ RecognitionException) { + _, _ = fmt.Fprintln(os.Stderr, "line "+strconv.Itoa(line)+":"+strconv.Itoa(column)+" "+msg) +} + +type ProxyErrorListener struct { + *DefaultErrorListener + delegates []ErrorListener +} + +func NewProxyErrorListener(delegates []ErrorListener) *ProxyErrorListener { + if delegates == nil { + panic("delegates is not provided") + } + l := new(ProxyErrorListener) + l.delegates = delegates + return l +} + +func (p *ProxyErrorListener) SyntaxError(recognizer Recognizer, offendingSymbol interface{}, line, column int, msg string, e RecognitionException) { + for _, d := range p.delegates { + d.SyntaxError(recognizer, offendingSymbol, line, column, msg, e) + } +} + +func (p *ProxyErrorListener) ReportAmbiguity(recognizer Parser, dfa *DFA, startIndex, stopIndex int, exact bool, ambigAlts *BitSet, configs *ATNConfigSet) { + for _, d := range p.delegates { + d.ReportAmbiguity(recognizer, dfa, startIndex, stopIndex, exact, ambigAlts, configs) + } +} + +func (p *ProxyErrorListener) ReportAttemptingFullContext(recognizer Parser, dfa *DFA, startIndex, stopIndex int, conflictingAlts *BitSet, configs *ATNConfigSet) { + for _, d := range p.delegates { + d.ReportAttemptingFullContext(recognizer, dfa, startIndex, stopIndex, conflictingAlts, configs) + } +} + +func (p *ProxyErrorListener) ReportContextSensitivity(recognizer Parser, dfa *DFA, startIndex, stopIndex, prediction int, configs *ATNConfigSet) { + for _, d := range p.delegates { + d.ReportContextSensitivity(recognizer, dfa, startIndex, stopIndex, prediction, configs) + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/error_strategy.go b/vendor/github.com/antlr4-go/antlr/v4/error_strategy.go new file mode 100644 index 0000000000..9db2be1c74 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/error_strategy.go @@ -0,0 +1,702 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "reflect" + "strconv" + "strings" +) + +type ErrorStrategy interface { + reset(Parser) + RecoverInline(Parser) Token + Recover(Parser, RecognitionException) + Sync(Parser) + InErrorRecoveryMode(Parser) bool + ReportError(Parser, RecognitionException) + ReportMatch(Parser) +} + +// DefaultErrorStrategy is the default implementation of ANTLRErrorStrategy used for +// error reporting and recovery in ANTLR parsers. +type DefaultErrorStrategy struct { + errorRecoveryMode bool + lastErrorIndex int + lastErrorStates *IntervalSet +} + +var _ ErrorStrategy = &DefaultErrorStrategy{} + +func NewDefaultErrorStrategy() *DefaultErrorStrategy { + + d := new(DefaultErrorStrategy) + + // Indicates whether the error strategy is currently "recovering from an + // error". This is used to suppress Reporting multiple error messages while + // attempting to recover from a detected syntax error. + // + // @see //InErrorRecoveryMode + // + d.errorRecoveryMode = false + + // The index into the input stream where the last error occurred. + // This is used to prevent infinite loops where an error is found + // but no token is consumed during recovery...another error is found, + // ad nauseam. This is a failsafe mechanism to guarantee that at least + // one token/tree node is consumed for two errors. + // + d.lastErrorIndex = -1 + d.lastErrorStates = nil + return d +} + +//

The default implementation simply calls {@link //endErrorCondition} to +// ensure that the handler is not in error recovery mode.

+func (d *DefaultErrorStrategy) reset(recognizer Parser) { + d.endErrorCondition(recognizer) +} + +// This method is called to enter error recovery mode when a recognition +// exception is Reported. +func (d *DefaultErrorStrategy) beginErrorCondition(_ Parser) { + d.errorRecoveryMode = true +} + +func (d *DefaultErrorStrategy) InErrorRecoveryMode(_ Parser) bool { + return d.errorRecoveryMode +} + +// This method is called to leave error recovery mode after recovering from +// a recognition exception. +func (d *DefaultErrorStrategy) endErrorCondition(_ Parser) { + d.errorRecoveryMode = false + d.lastErrorStates = nil + d.lastErrorIndex = -1 +} + +// ReportMatch is the default implementation of error matching and simply calls endErrorCondition. +func (d *DefaultErrorStrategy) ReportMatch(recognizer Parser) { + d.endErrorCondition(recognizer) +} + +// ReportError is the default implementation of error reporting. +// It returns immediately if the handler is already +// in error recovery mode. Otherwise, it calls [beginErrorCondition] +// and dispatches the Reporting task based on the runtime type of e +// according to the following table. +// +// [NoViableAltException] : Dispatches the call to [ReportNoViableAlternative] +// [InputMisMatchException] : Dispatches the call to [ReportInputMisMatch] +// [FailedPredicateException] : Dispatches the call to [ReportFailedPredicate] +// All other types : Calls [NotifyErrorListeners] to Report the exception +func (d *DefaultErrorStrategy) ReportError(recognizer Parser, e RecognitionException) { + // if we've already Reported an error and have not Matched a token + // yet successfully, don't Report any errors. + if d.InErrorRecoveryMode(recognizer) { + return // don't Report spurious errors + } + d.beginErrorCondition(recognizer) + + switch t := e.(type) { + default: + fmt.Println("unknown recognition error type: " + reflect.TypeOf(e).Name()) + // fmt.Println(e.stack) + recognizer.NotifyErrorListeners(e.GetMessage(), e.GetOffendingToken(), e) + case *NoViableAltException: + d.ReportNoViableAlternative(recognizer, t) + case *InputMisMatchException: + d.ReportInputMisMatch(recognizer, t) + case *FailedPredicateException: + d.ReportFailedPredicate(recognizer, t) + } +} + +// Recover is the default recovery implementation. +// It reSynchronizes the parser by consuming tokens until we find one in the reSynchronization set - +// loosely the set of tokens that can follow the current rule. +func (d *DefaultErrorStrategy) Recover(recognizer Parser, _ RecognitionException) { + + if d.lastErrorIndex == recognizer.GetInputStream().Index() && + d.lastErrorStates != nil && d.lastErrorStates.contains(recognizer.GetState()) { + // uh oh, another error at same token index and previously-Visited + // state in ATN must be a case where LT(1) is in the recovery + // token set so nothing got consumed. Consume a single token + // at least to prevent an infinite loop d is a failsafe. + recognizer.Consume() + } + d.lastErrorIndex = recognizer.GetInputStream().Index() + if d.lastErrorStates == nil { + d.lastErrorStates = NewIntervalSet() + } + d.lastErrorStates.addOne(recognizer.GetState()) + followSet := d.GetErrorRecoverySet(recognizer) + d.consumeUntil(recognizer, followSet) +} + +// Sync is the default implementation of error strategy synchronization. +// +// This Sync makes sure that the current lookahead symbol is consistent with what were expecting +// at this point in the [ATN]. You can call this anytime but ANTLR only +// generates code to check before sub-rules/loops and each iteration. +// +// Implements [Jim Idle]'s magic Sync mechanism in closures and optional +// sub-rules. E.g.: +// +// a : Sync ( stuff Sync )* +// Sync : {consume to what can follow Sync} +// +// At the start of a sub-rule upon error, Sync performs single +// token deletion, if possible. If it can't do that, it bails on the current +// rule and uses the default error recovery, which consumes until the +// reSynchronization set of the current rule. +// +// If the sub-rule is optional +// +// ({@code (...)?}, {@code (...)*}, +// +// or a block with an empty alternative), then the expected set includes what follows +// the sub-rule. +// +// During loop iteration, it consumes until it sees a token that can start a +// sub-rule or what follows loop. Yes, that is pretty aggressive. We opt to +// stay in the loop as long as possible. +// +// # Origins +// +// Previous versions of ANTLR did a poor job of their recovery within loops. +// A single mismatch token or missing token would force the parser to bail +// out of the entire rules surrounding the loop. So, for rule: +// +// classfunc : 'class' ID '{' member* '}' +// +// input with an extra token between members would force the parser to +// consume until it found the next class definition rather than the next +// member definition of the current class. +// +// This functionality cost a bit of effort because the parser has to +// compare the token set at the start of the loop and at each iteration. If for +// some reason speed is suffering for you, you can turn off this +// functionality by simply overriding this method as empty: +// +// { } +// +// [Jim Idle]: https://github.com/jimidle +func (d *DefaultErrorStrategy) Sync(recognizer Parser) { + // If already recovering, don't try to Sync + if d.InErrorRecoveryMode(recognizer) { + return + } + + s := recognizer.GetInterpreter().atn.states[recognizer.GetState()] + la := recognizer.GetTokenStream().LA(1) + + // try cheaper subset first might get lucky. seems to shave a wee bit off + nextTokens := recognizer.GetATN().NextTokens(s, nil) + if nextTokens.contains(TokenEpsilon) || nextTokens.contains(la) { + return + } + + switch s.GetStateType() { + case ATNStateBlockStart, ATNStateStarBlockStart, ATNStatePlusBlockStart, ATNStateStarLoopEntry: + // Report error and recover if possible + if d.SingleTokenDeletion(recognizer) != nil { + return + } + recognizer.SetError(NewInputMisMatchException(recognizer)) + case ATNStatePlusLoopBack, ATNStateStarLoopBack: + d.ReportUnwantedToken(recognizer) + expecting := NewIntervalSet() + expecting.addSet(recognizer.GetExpectedTokens()) + whatFollowsLoopIterationOrRule := expecting.addSet(d.GetErrorRecoverySet(recognizer)) + d.consumeUntil(recognizer, whatFollowsLoopIterationOrRule) + default: + // do nothing if we can't identify the exact kind of ATN state + } +} + +// ReportNoViableAlternative is called by [ReportError] when the exception is a [NoViableAltException]. +// +// See also [ReportError] +func (d *DefaultErrorStrategy) ReportNoViableAlternative(recognizer Parser, e *NoViableAltException) { + tokens := recognizer.GetTokenStream() + var input string + if tokens != nil { + if e.startToken.GetTokenType() == TokenEOF { + input = "" + } else { + input = tokens.GetTextFromTokens(e.startToken, e.offendingToken) + } + } else { + input = "" + } + msg := "no viable alternative at input " + d.escapeWSAndQuote(input) + recognizer.NotifyErrorListeners(msg, e.offendingToken, e) +} + +// ReportInputMisMatch is called by [ReportError] when the exception is an [InputMisMatchException] +// +// See also: [ReportError] +func (d *DefaultErrorStrategy) ReportInputMisMatch(recognizer Parser, e *InputMisMatchException) { + msg := "mismatched input " + d.GetTokenErrorDisplay(e.offendingToken) + + " expecting " + e.getExpectedTokens().StringVerbose(recognizer.GetLiteralNames(), recognizer.GetSymbolicNames(), false) + recognizer.NotifyErrorListeners(msg, e.offendingToken, e) +} + +// ReportFailedPredicate is called by [ReportError] when the exception is a [FailedPredicateException]. +// +// See also: [ReportError] +func (d *DefaultErrorStrategy) ReportFailedPredicate(recognizer Parser, e *FailedPredicateException) { + ruleName := recognizer.GetRuleNames()[recognizer.GetParserRuleContext().GetRuleIndex()] + msg := "rule " + ruleName + " " + e.message + recognizer.NotifyErrorListeners(msg, e.offendingToken, e) +} + +// ReportUnwantedToken is called to report a syntax error that requires the removal +// of a token from the input stream. At the time d method is called, the +// erroneous symbol is the current LT(1) symbol and has not yet been +// removed from the input stream. When this method returns, +// recognizer is in error recovery mode. +// +// This method is called when singleTokenDeletion identifies +// single-token deletion as a viable recovery strategy for a mismatched +// input error. +// +// The default implementation simply returns if the handler is already in +// error recovery mode. Otherwise, it calls beginErrorCondition to +// enter error recovery mode, followed by calling +// [NotifyErrorListeners] +func (d *DefaultErrorStrategy) ReportUnwantedToken(recognizer Parser) { + if d.InErrorRecoveryMode(recognizer) { + return + } + d.beginErrorCondition(recognizer) + t := recognizer.GetCurrentToken() + tokenName := d.GetTokenErrorDisplay(t) + expecting := d.GetExpectedTokens(recognizer) + msg := "extraneous input " + tokenName + " expecting " + + expecting.StringVerbose(recognizer.GetLiteralNames(), recognizer.GetSymbolicNames(), false) + recognizer.NotifyErrorListeners(msg, t, nil) +} + +// ReportMissingToken is called to report a syntax error which requires the +// insertion of a missing token into the input stream. At the time this +// method is called, the missing token has not yet been inserted. When this +// method returns, recognizer is in error recovery mode. +// +// This method is called when singleTokenInsertion identifies +// single-token insertion as a viable recovery strategy for a mismatched +// input error. +// +// The default implementation simply returns if the handler is already in +// error recovery mode. Otherwise, it calls beginErrorCondition to +// enter error recovery mode, followed by calling [NotifyErrorListeners] +func (d *DefaultErrorStrategy) ReportMissingToken(recognizer Parser) { + if d.InErrorRecoveryMode(recognizer) { + return + } + d.beginErrorCondition(recognizer) + t := recognizer.GetCurrentToken() + expecting := d.GetExpectedTokens(recognizer) + msg := "missing " + expecting.StringVerbose(recognizer.GetLiteralNames(), recognizer.GetSymbolicNames(), false) + + " at " + d.GetTokenErrorDisplay(t) + recognizer.NotifyErrorListeners(msg, t, nil) +} + +// The RecoverInline default implementation attempts to recover from the mismatched input +// by using single token insertion and deletion as described below. If the +// recovery attempt fails, this method panics with [InputMisMatchException}. +// TODO: Not sure that panic() is the right thing to do here - JI +// +// # EXTRA TOKEN (single token deletion) +// +// LA(1) is not what we are looking for. If LA(2) has the +// right token, however, then assume LA(1) is some extra spurious +// token and delete it. Then consume and return the next token (which was +// the LA(2) token) as the successful result of the Match operation. +// +// # This recovery strategy is implemented by singleTokenDeletion +// +// # MISSING TOKEN (single token insertion) +// +// If current token -at LA(1) - is consistent with what could come +// after the expected LA(1) token, then assume the token is missing +// and use the parser's [TokenFactory] to create it on the fly. The +// “insertion” is performed by returning the created token as the successful +// result of the Match operation. +// +// This recovery strategy is implemented by [SingleTokenInsertion]. +// +// # Example +// +// For example, Input i=(3 is clearly missing the ')'. When +// the parser returns from the nested call to expr, it will have +// call the chain: +// +// stat → expr → atom +// +// and it will be trying to Match the ')' at this point in the +// derivation: +// +// : ID '=' '(' INT ')' ('+' atom)* ';' +// ^ +// +// The attempt to [Match] ')' will fail when it sees ';' and +// call [RecoverInline]. To recover, it sees that LA(1)==';' +// is in the set of tokens that can follow the ')' token reference +// in rule atom. It can assume that you forgot the ')'. +func (d *DefaultErrorStrategy) RecoverInline(recognizer Parser) Token { + // SINGLE TOKEN DELETION + MatchedSymbol := d.SingleTokenDeletion(recognizer) + if MatchedSymbol != nil { + // we have deleted the extra token. + // now, move past ttype token as if all were ok + recognizer.Consume() + return MatchedSymbol + } + // SINGLE TOKEN INSERTION + if d.SingleTokenInsertion(recognizer) { + return d.GetMissingSymbol(recognizer) + } + // even that didn't work must panic the exception + recognizer.SetError(NewInputMisMatchException(recognizer)) + return nil +} + +// SingleTokenInsertion implements the single-token insertion inline error recovery +// strategy. It is called by [RecoverInline] if the single-token +// deletion strategy fails to recover from the mismatched input. If this +// method returns {@code true}, {@code recognizer} will be in error recovery +// mode. +// +// This method determines whether single-token insertion is viable by +// checking if the LA(1) input symbol could be successfully Matched +// if it were instead the LA(2) symbol. If this method returns +// {@code true}, the caller is responsible for creating and inserting a +// token with the correct type to produce this behavior.

+// +// This func returns true if single-token insertion is a viable recovery +// strategy for the current mismatched input. +func (d *DefaultErrorStrategy) SingleTokenInsertion(recognizer Parser) bool { + currentSymbolType := recognizer.GetTokenStream().LA(1) + // if current token is consistent with what could come after current + // ATN state, then we know we're missing a token error recovery + // is free to conjure up and insert the missing token + atn := recognizer.GetInterpreter().atn + currentState := atn.states[recognizer.GetState()] + next := currentState.GetTransitions()[0].getTarget() + expectingAtLL2 := atn.NextTokens(next, recognizer.GetParserRuleContext()) + if expectingAtLL2.contains(currentSymbolType) { + d.ReportMissingToken(recognizer) + return true + } + + return false +} + +// SingleTokenDeletion implements the single-token deletion inline error recovery +// strategy. It is called by [RecoverInline] to attempt to recover +// from mismatched input. If this method returns nil, the parser and error +// handler state will not have changed. If this method returns non-nil, +// recognizer will not be in error recovery mode since the +// returned token was a successful Match. +// +// If the single-token deletion is successful, this method calls +// [ReportUnwantedToken] to Report the error, followed by +// [Consume] to actually “delete” the extraneous token. Then, +// before returning, [ReportMatch] is called to signal a successful +// Match. +// +// The func returns the successfully Matched [Token] instance if single-token +// deletion successfully recovers from the mismatched input, otherwise nil. +func (d *DefaultErrorStrategy) SingleTokenDeletion(recognizer Parser) Token { + NextTokenType := recognizer.GetTokenStream().LA(2) + expecting := d.GetExpectedTokens(recognizer) + if expecting.contains(NextTokenType) { + d.ReportUnwantedToken(recognizer) + // print("recoverFromMisMatchedToken deleting " \ + // + str(recognizer.GetTokenStream().LT(1)) \ + // + " since " + str(recognizer.GetTokenStream().LT(2)) \ + // + " is what we want", file=sys.stderr) + recognizer.Consume() // simply delete extra token + // we want to return the token we're actually Matching + MatchedSymbol := recognizer.GetCurrentToken() + d.ReportMatch(recognizer) // we know current token is correct + return MatchedSymbol + } + + return nil +} + +// GetMissingSymbol conjures up a missing token during error recovery. +// +// The recognizer attempts to recover from single missing +// symbols. But, actions might refer to that missing symbol. +// For example: +// +// x=ID {f($x)}. +// +// The action clearly assumes +// that there has been an identifier Matched previously and that +// $x points at that token. If that token is missing, but +// the next token in the stream is what we want we assume that +// this token is missing, and we keep going. Because we +// have to return some token to replace the missing token, +// we have to conjure one up. This method gives the user control +// over the tokens returned for missing tokens. Mostly, +// you will want to create something special for identifier +// tokens. For literals such as '{' and ',', the default +// action in the parser or tree parser works. It simply creates +// a [CommonToken] of the appropriate type. The text will be the token name. +// If you need to change which tokens must be created by the lexer, +// override this method to create the appropriate tokens. +func (d *DefaultErrorStrategy) GetMissingSymbol(recognizer Parser) Token { + currentSymbol := recognizer.GetCurrentToken() + expecting := d.GetExpectedTokens(recognizer) + expectedTokenType := expecting.first() + var tokenText string + + if expectedTokenType == TokenEOF { + tokenText = "" + } else { + ln := recognizer.GetLiteralNames() + if expectedTokenType > 0 && expectedTokenType < len(ln) { + tokenText = "" + } else { + tokenText = "" // TODO: matches the JS impl + } + } + current := currentSymbol + lookback := recognizer.GetTokenStream().LT(-1) + if current.GetTokenType() == TokenEOF && lookback != nil { + current = lookback + } + + tf := recognizer.GetTokenFactory() + + return tf.Create(current.GetSource(), expectedTokenType, tokenText, TokenDefaultChannel, -1, -1, current.GetLine(), current.GetColumn()) +} + +func (d *DefaultErrorStrategy) GetExpectedTokens(recognizer Parser) *IntervalSet { + return recognizer.GetExpectedTokens() +} + +// GetTokenErrorDisplay determines how a token should be displayed in an error message. +// The default is to display just the text, but during development you might +// want to have a lot of information spit out. Override this func in that case +// to use t.String() (which, for [CommonToken], dumps everything about +// the token). This is better than forcing you to override a method in +// your token objects because you don't have to go modify your lexer +// so that it creates a new type. +func (d *DefaultErrorStrategy) GetTokenErrorDisplay(t Token) string { + if t == nil { + return "" + } + s := t.GetText() + if s == "" { + if t.GetTokenType() == TokenEOF { + s = "" + } else { + s = "<" + strconv.Itoa(t.GetTokenType()) + ">" + } + } + return d.escapeWSAndQuote(s) +} + +func (d *DefaultErrorStrategy) escapeWSAndQuote(s string) string { + s = strings.Replace(s, "\t", "\\t", -1) + s = strings.Replace(s, "\n", "\\n", -1) + s = strings.Replace(s, "\r", "\\r", -1) + return "'" + s + "'" +} + +// GetErrorRecoverySet computes the error recovery set for the current rule. During +// rule invocation, the parser pushes the set of tokens that can +// follow that rule reference on the stack. This amounts to +// computing FIRST of what follows the rule reference in the +// enclosing rule. See LinearApproximator.FIRST(). +// +// This local follow set only includes tokens +// from within the rule i.e., the FIRST computation done by +// ANTLR stops at the end of a rule. +// +// # Example +// +// When you find a "no viable alt exception", the input is not +// consistent with any of the alternatives for rule r. The best +// thing to do is to consume tokens until you see something that +// can legally follow a call to r or any rule that called r. +// You don't want the exact set of viable next tokens because the +// input might just be missing a token--you might consume the +// rest of the input looking for one of the missing tokens. +// +// Consider the grammar: +// +// a : '[' b ']' +// | '(' b ')' +// ; +// +// b : c '^' INT +// ; +// +// c : ID +// | INT +// ; +// +// At each rule invocation, the set of tokens that could follow +// that rule is pushed on a stack. Here are the various +// context-sensitive follow sets: +// +// FOLLOW(b1_in_a) = FIRST(']') = ']' +// FOLLOW(b2_in_a) = FIRST(')') = ')' +// FOLLOW(c_in_b) = FIRST('^') = '^' +// +// Upon erroneous input “[]”, the call chain is +// +// a → b → c +// +// and, hence, the follow context stack is: +// +// Depth Follow set Start of rule execution +// 0 a (from main()) +// 1 ']' b +// 2 '^' c +// +// Notice that ')' is not included, because b would have to have +// been called from a different context in rule a for ')' to be +// included. +// +// For error recovery, we cannot consider FOLLOW(c) +// (context-sensitive or otherwise). We need the combined set of +// all context-sensitive FOLLOW sets - the set of all tokens that +// could follow any reference in the call chain. We need to +// reSync to one of those tokens. Note that FOLLOW(c)='^' and if +// we reSync'd to that token, we'd consume until EOF. We need to +// Sync to context-sensitive FOLLOWs for a, b, and c: +// +// {']','^'} +// +// In this case, for input "[]", LA(1) is ']' and in the set, so we would +// not consume anything. After printing an error, rule c would +// return normally. Rule b would not find the required '^' though. +// At this point, it gets a mismatched token error and panics an +// exception (since LA(1) is not in the viable following token +// set). The rule exception handler tries to recover, but finds +// the same recovery set and doesn't consume anything. Rule b +// exits normally returning to rule a. Now it finds the ']' (and +// with the successful Match exits errorRecovery mode). +// +// So, you can see that the parser walks up the call chain looking +// for the token that was a member of the recovery set. +// +// Errors are not generated in errorRecovery mode. +// +// ANTLR's error recovery mechanism is based upon original ideas: +// +// [Algorithms + Data Structures = Programs] by Niklaus Wirth and +// [A note on error recovery in recursive descent parsers]. +// +// Later, Josef Grosch had some good ideas in [Efficient and Comfortable Error Recovery in Recursive Descent +// Parsers] +// +// Like Grosch I implement context-sensitive FOLLOW sets that are combined at run-time upon error to avoid overhead +// during parsing. Later, the runtime Sync was improved for loops/sub-rules see [Sync] docs +// +// [A note on error recovery in recursive descent parsers]: http://portal.acm.org/citation.cfm?id=947902.947905 +// [Algorithms + Data Structures = Programs]: https://t.ly/5QzgE +// [Efficient and Comfortable Error Recovery in Recursive Descent Parsers]: ftp://www.cocolab.com/products/cocktail/doca4.ps/ell.ps.zip +func (d *DefaultErrorStrategy) GetErrorRecoverySet(recognizer Parser) *IntervalSet { + atn := recognizer.GetInterpreter().atn + ctx := recognizer.GetParserRuleContext() + recoverSet := NewIntervalSet() + for ctx != nil && ctx.GetInvokingState() >= 0 { + // compute what follows who invoked us + invokingState := atn.states[ctx.GetInvokingState()] + rt := invokingState.GetTransitions()[0] + follow := atn.NextTokens(rt.(*RuleTransition).followState, nil) + recoverSet.addSet(follow) + ctx = ctx.GetParent().(ParserRuleContext) + } + recoverSet.removeOne(TokenEpsilon) + return recoverSet +} + +// Consume tokens until one Matches the given token set.// +func (d *DefaultErrorStrategy) consumeUntil(recognizer Parser, set *IntervalSet) { + ttype := recognizer.GetTokenStream().LA(1) + for ttype != TokenEOF && !set.contains(ttype) { + recognizer.Consume() + ttype = recognizer.GetTokenStream().LA(1) + } +} + +// The BailErrorStrategy implementation of ANTLRErrorStrategy responds to syntax errors +// by immediately canceling the parse operation with a +// [ParseCancellationException]. The implementation ensures that the +// [ParserRuleContext//exception] field is set for all parse tree nodes +// that were not completed prior to encountering the error. +// +// This error strategy is useful in the following scenarios. +// +// - Two-stage parsing: This error strategy allows the first +// stage of two-stage parsing to immediately terminate if an error is +// encountered, and immediately fall back to the second stage. In addition to +// avoiding wasted work by attempting to recover from errors here, the empty +// implementation of [BailErrorStrategy.Sync] improves the performance of +// the first stage. +// +// - Silent validation: When syntax errors are not being +// Reported or logged, and the parse result is simply ignored if errors occur, +// the [BailErrorStrategy] avoids wasting work on recovering from errors +// when the result will be ignored either way. +// +// myparser.SetErrorHandler(NewBailErrorStrategy()) +// +// See also: [Parser.SetErrorHandler(ANTLRErrorStrategy)] +type BailErrorStrategy struct { + *DefaultErrorStrategy +} + +var _ ErrorStrategy = &BailErrorStrategy{} + +//goland:noinspection GoUnusedExportedFunction +func NewBailErrorStrategy() *BailErrorStrategy { + + b := new(BailErrorStrategy) + + b.DefaultErrorStrategy = NewDefaultErrorStrategy() + + return b +} + +// Recover Instead of recovering from exception e, re-panic it wrapped +// in a [ParseCancellationException] so it is not caught by the +// rule func catches. Use Exception.GetCause() to get the +// original [RecognitionException]. +func (b *BailErrorStrategy) Recover(recognizer Parser, e RecognitionException) { + context := recognizer.GetParserRuleContext() + for context != nil { + context.SetException(e) + if parent, ok := context.GetParent().(ParserRuleContext); ok { + context = parent + } else { + context = nil + } + } + recognizer.SetError(NewParseCancellationException()) // TODO: we don't emit e properly +} + +// RecoverInline makes sure we don't attempt to recover inline if the parser +// successfully recovers, it won't panic an exception. +func (b *BailErrorStrategy) RecoverInline(recognizer Parser) Token { + b.Recover(recognizer, NewInputMisMatchException(recognizer)) + + return nil +} + +// Sync makes sure we don't attempt to recover from problems in sub-rules. +func (b *BailErrorStrategy) Sync(_ Parser) { +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/errors.go b/vendor/github.com/antlr4-go/antlr/v4/errors.go new file mode 100644 index 0000000000..8f0f2f601f --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/errors.go @@ -0,0 +1,259 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// The root of the ANTLR exception hierarchy. In general, ANTLR tracks just +// 3 kinds of errors: prediction errors, failed predicate errors, and +// mismatched input errors. In each case, the parser knows where it is +// in the input, where it is in the ATN, the rule invocation stack, +// and what kind of problem occurred. + +type RecognitionException interface { + GetOffendingToken() Token + GetMessage() string + GetInputStream() IntStream +} + +type BaseRecognitionException struct { + message string + recognizer Recognizer + offendingToken Token + offendingState int + ctx RuleContext + input IntStream +} + +func NewBaseRecognitionException(message string, recognizer Recognizer, input IntStream, ctx RuleContext) *BaseRecognitionException { + + // todo + // Error.call(this) + // + // if (!!Error.captureStackTrace) { + // Error.captureStackTrace(this, RecognitionException) + // } else { + // stack := NewError().stack + // } + // TODO: may be able to use - "runtime" func Stack(buf []byte, all bool) int + + t := new(BaseRecognitionException) + + t.message = message + t.recognizer = recognizer + t.input = input + t.ctx = ctx + + // The current Token when an error occurred. Since not all streams + // support accessing symbols by index, we have to track the {@link Token} + // instance itself. + // + t.offendingToken = nil + + // Get the ATN state number the parser was in at the time the error + // occurred. For NoViableAltException and LexerNoViableAltException exceptions, this is the + // DecisionState number. For others, it is the state whose outgoing edge we couldn't Match. + // + t.offendingState = -1 + if t.recognizer != nil { + t.offendingState = t.recognizer.GetState() + } + + return t +} + +func (b *BaseRecognitionException) GetMessage() string { + return b.message +} + +func (b *BaseRecognitionException) GetOffendingToken() Token { + return b.offendingToken +} + +func (b *BaseRecognitionException) GetInputStream() IntStream { + return b.input +} + +//

If the state number is not known, b method returns -1.

+ +// getExpectedTokens gets the set of input symbols which could potentially follow the +// previously Matched symbol at the time this exception was raised. +// +// If the set of expected tokens is not known and could not be computed, +// this method returns nil. +// +// The func returns the set of token types that could potentially follow the current +// state in the {ATN}, or nil if the information is not available. + +func (b *BaseRecognitionException) getExpectedTokens() *IntervalSet { + if b.recognizer != nil { + return b.recognizer.GetATN().getExpectedTokens(b.offendingState, b.ctx) + } + + return nil +} + +func (b *BaseRecognitionException) String() string { + return b.message +} + +type LexerNoViableAltException struct { + *BaseRecognitionException + + startIndex int + deadEndConfigs *ATNConfigSet +} + +func NewLexerNoViableAltException(lexer Lexer, input CharStream, startIndex int, deadEndConfigs *ATNConfigSet) *LexerNoViableAltException { + + l := new(LexerNoViableAltException) + + l.BaseRecognitionException = NewBaseRecognitionException("", lexer, input, nil) + + l.startIndex = startIndex + l.deadEndConfigs = deadEndConfigs + + return l +} + +func (l *LexerNoViableAltException) String() string { + symbol := "" + if l.startIndex >= 0 && l.startIndex < l.input.Size() { + symbol = l.input.(CharStream).GetTextFromInterval(NewInterval(l.startIndex, l.startIndex)) + } + return "LexerNoViableAltException" + symbol +} + +type NoViableAltException struct { + *BaseRecognitionException + + startToken Token + offendingToken Token + ctx ParserRuleContext + deadEndConfigs *ATNConfigSet +} + +// NewNoViableAltException creates an exception indicating that the parser could not decide which of two or more paths +// to take based upon the remaining input. It tracks the starting token +// of the offending input and also knows where the parser was +// in the various paths when the error. +// +// Reported by [ReportNoViableAlternative] +func NewNoViableAltException(recognizer Parser, input TokenStream, startToken Token, offendingToken Token, deadEndConfigs *ATNConfigSet, ctx ParserRuleContext) *NoViableAltException { + + if ctx == nil { + ctx = recognizer.GetParserRuleContext() + } + + if offendingToken == nil { + offendingToken = recognizer.GetCurrentToken() + } + + if startToken == nil { + startToken = recognizer.GetCurrentToken() + } + + if input == nil { + input = recognizer.GetInputStream().(TokenStream) + } + + n := new(NoViableAltException) + n.BaseRecognitionException = NewBaseRecognitionException("", recognizer, input, ctx) + + // Which configurations did we try at input.Index() that couldn't Match + // input.LT(1) + n.deadEndConfigs = deadEndConfigs + + // The token object at the start index the input stream might + // not be buffering tokens so get a reference to it. + // + // At the time the error occurred, of course the stream needs to keep a + // buffer of all the tokens, but later we might not have access to those. + n.startToken = startToken + n.offendingToken = offendingToken + + return n +} + +type InputMisMatchException struct { + *BaseRecognitionException +} + +// NewInputMisMatchException creates an exception that signifies any kind of mismatched input exceptions such as +// when the current input does not Match the expected token. +func NewInputMisMatchException(recognizer Parser) *InputMisMatchException { + + i := new(InputMisMatchException) + i.BaseRecognitionException = NewBaseRecognitionException("", recognizer, recognizer.GetInputStream(), recognizer.GetParserRuleContext()) + + i.offendingToken = recognizer.GetCurrentToken() + + return i + +} + +// FailedPredicateException indicates that a semantic predicate failed during validation. Validation of predicates +// occurs when normally parsing the alternative just like Matching a token. +// Disambiguating predicate evaluation occurs when we test a predicate during +// prediction. +type FailedPredicateException struct { + *BaseRecognitionException + + ruleIndex int + predicateIndex int + predicate string +} + +//goland:noinspection GoUnusedExportedFunction +func NewFailedPredicateException(recognizer Parser, predicate string, message string) *FailedPredicateException { + + f := new(FailedPredicateException) + + f.BaseRecognitionException = NewBaseRecognitionException(f.formatMessage(predicate, message), recognizer, recognizer.GetInputStream(), recognizer.GetParserRuleContext()) + + s := recognizer.GetInterpreter().atn.states[recognizer.GetState()] + trans := s.GetTransitions()[0] + if trans2, ok := trans.(*PredicateTransition); ok { + f.ruleIndex = trans2.ruleIndex + f.predicateIndex = trans2.predIndex + } else { + f.ruleIndex = 0 + f.predicateIndex = 0 + } + f.predicate = predicate + f.offendingToken = recognizer.GetCurrentToken() + + return f +} + +func (f *FailedPredicateException) formatMessage(predicate, message string) string { + if message != "" { + return message + } + + return "failed predicate: {" + predicate + "}?" +} + +type ParseCancellationException struct { +} + +func (p ParseCancellationException) GetOffendingToken() Token { + //TODO implement me + panic("implement me") +} + +func (p ParseCancellationException) GetMessage() string { + //TODO implement me + panic("implement me") +} + +func (p ParseCancellationException) GetInputStream() IntStream { + //TODO implement me + panic("implement me") +} + +func NewParseCancellationException() *ParseCancellationException { + // Error.call(this) + // Error.captureStackTrace(this, ParseCancellationException) + return new(ParseCancellationException) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/file_stream.go b/vendor/github.com/antlr4-go/antlr/v4/file_stream.go new file mode 100644 index 0000000000..5f65f809be --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/file_stream.go @@ -0,0 +1,67 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "bufio" + "os" +) + +// This is an InputStream that is loaded from a file all at once +// when you construct the object. + +type FileStream struct { + InputStream + filename string +} + +//goland:noinspection GoUnusedExportedFunction +func NewFileStream(fileName string) (*FileStream, error) { + + f, err := os.Open(fileName) + if err != nil { + return nil, err + } + + defer func(f *os.File) { + errF := f.Close() + if errF != nil { + } + }(f) + + reader := bufio.NewReader(f) + fInfo, err := f.Stat() + if err != nil { + return nil, err + } + + fs := &FileStream{ + InputStream: InputStream{ + index: 0, + name: fileName, + }, + filename: fileName, + } + + // Pre-build the buffer and read runes efficiently + // + fs.data = make([]rune, 0, fInfo.Size()) + for { + r, _, err := reader.ReadRune() + if err != nil { + break + } + fs.data = append(fs.data, r) + } + fs.size = len(fs.data) // Size in runes + + // All done. + // + return fs, nil +} + +func (f *FileStream) GetSourceName() string { + return f.filename +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/input_stream.go b/vendor/github.com/antlr4-go/antlr/v4/input_stream.go new file mode 100644 index 0000000000..b737fe85fb --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/input_stream.go @@ -0,0 +1,157 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "bufio" + "io" +) + +type InputStream struct { + name string + index int + data []rune + size int +} + +// NewIoStream creates a new input stream from the given io.Reader reader. +// Note that the reader is read completely into memory and so it must actually +// have a stopping point - you cannot pass in a reader on an open-ended source such +// as a socket for instance. +func NewIoStream(reader io.Reader) *InputStream { + + rReader := bufio.NewReader(reader) + + is := &InputStream{ + name: "", + index: 0, + } + + // Pre-build the buffer and read runes reasonably efficiently given that + // we don't exactly know how big the input is. + // + is.data = make([]rune, 0, 512) + for { + r, _, err := rReader.ReadRune() + if err != nil { + break + } + is.data = append(is.data, r) + } + is.size = len(is.data) // number of runes + return is +} + +// NewInputStream creates a new input stream from the given string +func NewInputStream(data string) *InputStream { + + is := &InputStream{ + name: "", + index: 0, + data: []rune(data), // This is actually the most efficient way + } + is.size = len(is.data) // number of runes, but we could also use len(data), which is efficient too + return is +} + +func (is *InputStream) reset() { + is.index = 0 +} + +// Consume moves the input pointer to the next character in the input stream +func (is *InputStream) Consume() { + if is.index >= is.size { + // assert is.LA(1) == TokenEOF + panic("cannot consume EOF") + } + is.index++ +} + +// LA returns the character at the given offset from the start of the input stream +func (is *InputStream) LA(offset int) int { + + if offset == 0 { + return 0 // nil + } + if offset < 0 { + offset++ // e.g., translate LA(-1) to use offset=0 + } + pos := is.index + offset - 1 + + if pos < 0 || pos >= is.size { // invalid + return TokenEOF + } + + return int(is.data[pos]) +} + +// LT returns the character at the given offset from the start of the input stream +func (is *InputStream) LT(offset int) int { + return is.LA(offset) +} + +// Index returns the current offset in to the input stream +func (is *InputStream) Index() int { + return is.index +} + +// Size returns the total number of characters in the input stream +func (is *InputStream) Size() int { + return is.size +} + +// Mark does nothing here as we have entire buffer +func (is *InputStream) Mark() int { + return -1 +} + +// Release does nothing here as we have entire buffer +func (is *InputStream) Release(_ int) { +} + +// Seek the input point to the provided index offset +func (is *InputStream) Seek(index int) { + if index <= is.index { + is.index = index // just jump don't update stream state (line,...) + return + } + // seek forward + is.index = intMin(index, is.size) +} + +// GetText returns the text from the input stream from the start to the stop index +func (is *InputStream) GetText(start int, stop int) string { + if stop >= is.size { + stop = is.size - 1 + } + if start >= is.size { + return "" + } + + return string(is.data[start : stop+1]) +} + +// GetTextFromTokens returns the text from the input stream from the first character of the start token to the last +// character of the stop token +func (is *InputStream) GetTextFromTokens(start, stop Token) string { + if start != nil && stop != nil { + return is.GetTextFromInterval(NewInterval(start.GetTokenIndex(), stop.GetTokenIndex())) + } + + return "" +} + +func (is *InputStream) GetTextFromInterval(i Interval) string { + return is.GetText(i.Start, i.Stop) +} + +func (*InputStream) GetSourceName() string { + return "" +} + +// String returns the entire input stream as a string +func (is *InputStream) String() string { + return string(is.data) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/int_stream.go b/vendor/github.com/antlr4-go/antlr/v4/int_stream.go new file mode 100644 index 0000000000..4778878bd0 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/int_stream.go @@ -0,0 +1,16 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +type IntStream interface { + Consume() + LA(int) int + Mark() int + Release(marker int) + Index() int + Seek(index int) + Size() int + GetSourceName() string +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/interval_set.go b/vendor/github.com/antlr4-go/antlr/v4/interval_set.go new file mode 100644 index 0000000000..cc5066067a --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/interval_set.go @@ -0,0 +1,330 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "strconv" + "strings" +) + +type Interval struct { + Start int + Stop int +} + +// NewInterval creates a new interval with the given start and stop values. +func NewInterval(start, stop int) Interval { + return Interval{ + Start: start, + Stop: stop, + } +} + +// Contains returns true if the given item is contained within the interval. +func (i Interval) Contains(item int) bool { + return item >= i.Start && item < i.Stop +} + +// String generates a string representation of the interval. +func (i Interval) String() string { + if i.Start == i.Stop-1 { + return strconv.Itoa(i.Start) + } + + return strconv.Itoa(i.Start) + ".." + strconv.Itoa(i.Stop-1) +} + +// Length returns the length of the interval. +func (i Interval) Length() int { + return i.Stop - i.Start +} + +// IntervalSet represents a collection of [Intervals], which may be read-only. +type IntervalSet struct { + intervals []Interval + readOnly bool +} + +// NewIntervalSet creates a new empty, writable, interval set. +func NewIntervalSet() *IntervalSet { + + i := new(IntervalSet) + + i.intervals = nil + i.readOnly = false + + return i +} + +func (i *IntervalSet) Equals(other *IntervalSet) bool { + if len(i.intervals) != len(other.intervals) { + return false + } + + for k, v := range i.intervals { + if v.Start != other.intervals[k].Start || v.Stop != other.intervals[k].Stop { + return false + } + } + + return true +} + +func (i *IntervalSet) first() int { + if len(i.intervals) == 0 { + return TokenInvalidType + } + + return i.intervals[0].Start +} + +func (i *IntervalSet) addOne(v int) { + i.addInterval(NewInterval(v, v+1)) +} + +func (i *IntervalSet) addRange(l, h int) { + i.addInterval(NewInterval(l, h+1)) +} + +func (i *IntervalSet) addInterval(v Interval) { + if i.intervals == nil { + i.intervals = make([]Interval, 0) + i.intervals = append(i.intervals, v) + } else { + // find insert pos + for k, interval := range i.intervals { + // distinct range -> insert + if v.Stop < interval.Start { + i.intervals = append(i.intervals[0:k], append([]Interval{v}, i.intervals[k:]...)...) + return + } else if v.Stop == interval.Start { + i.intervals[k].Start = v.Start + return + } else if v.Start <= interval.Stop { + i.intervals[k] = NewInterval(intMin(interval.Start, v.Start), intMax(interval.Stop, v.Stop)) + + // if not applying to end, merge potential overlaps + if k < len(i.intervals)-1 { + l := i.intervals[k] + r := i.intervals[k+1] + // if r contained in l + if l.Stop >= r.Stop { + i.intervals = append(i.intervals[0:k+1], i.intervals[k+2:]...) + } else if l.Stop >= r.Start { // partial overlap + i.intervals[k] = NewInterval(l.Start, r.Stop) + i.intervals = append(i.intervals[0:k+1], i.intervals[k+2:]...) + } + } + return + } + } + // greater than any exiting + i.intervals = append(i.intervals, v) + } +} + +func (i *IntervalSet) addSet(other *IntervalSet) *IntervalSet { + if other.intervals != nil { + for k := 0; k < len(other.intervals); k++ { + i2 := other.intervals[k] + i.addInterval(NewInterval(i2.Start, i2.Stop)) + } + } + return i +} + +func (i *IntervalSet) complement(start int, stop int) *IntervalSet { + result := NewIntervalSet() + result.addInterval(NewInterval(start, stop+1)) + for j := 0; j < len(i.intervals); j++ { + result.removeRange(i.intervals[j]) + } + return result +} + +func (i *IntervalSet) contains(item int) bool { + if i.intervals == nil { + return false + } + for k := 0; k < len(i.intervals); k++ { + if i.intervals[k].Contains(item) { + return true + } + } + return false +} + +func (i *IntervalSet) length() int { + iLen := 0 + + for _, v := range i.intervals { + iLen += v.Length() + } + + return iLen +} + +func (i *IntervalSet) removeRange(v Interval) { + if v.Start == v.Stop-1 { + i.removeOne(v.Start) + } else if i.intervals != nil { + k := 0 + for n := 0; n < len(i.intervals); n++ { + ni := i.intervals[k] + // intervals are ordered + if v.Stop <= ni.Start { + return + } else if v.Start > ni.Start && v.Stop < ni.Stop { + i.intervals[k] = NewInterval(ni.Start, v.Start) + x := NewInterval(v.Stop, ni.Stop) + // i.intervals.splice(k, 0, x) + i.intervals = append(i.intervals[0:k], append([]Interval{x}, i.intervals[k:]...)...) + return + } else if v.Start <= ni.Start && v.Stop >= ni.Stop { + // i.intervals.splice(k, 1) + i.intervals = append(i.intervals[0:k], i.intervals[k+1:]...) + k = k - 1 // need another pass + } else if v.Start < ni.Stop { + i.intervals[k] = NewInterval(ni.Start, v.Start) + } else if v.Stop < ni.Stop { + i.intervals[k] = NewInterval(v.Stop, ni.Stop) + } + k++ + } + } +} + +func (i *IntervalSet) removeOne(v int) { + if i.intervals != nil { + for k := 0; k < len(i.intervals); k++ { + ki := i.intervals[k] + // intervals i ordered + if v < ki.Start { + return + } else if v == ki.Start && v == ki.Stop-1 { + // i.intervals.splice(k, 1) + i.intervals = append(i.intervals[0:k], i.intervals[k+1:]...) + return + } else if v == ki.Start { + i.intervals[k] = NewInterval(ki.Start+1, ki.Stop) + return + } else if v == ki.Stop-1 { + i.intervals[k] = NewInterval(ki.Start, ki.Stop-1) + return + } else if v < ki.Stop-1 { + x := NewInterval(ki.Start, v) + ki.Start = v + 1 + // i.intervals.splice(k, 0, x) + i.intervals = append(i.intervals[0:k], append([]Interval{x}, i.intervals[k:]...)...) + return + } + } + } +} + +func (i *IntervalSet) String() string { + return i.StringVerbose(nil, nil, false) +} + +func (i *IntervalSet) StringVerbose(literalNames []string, symbolicNames []string, elemsAreChar bool) string { + + if i.intervals == nil { + return "{}" + } else if literalNames != nil || symbolicNames != nil { + return i.toTokenString(literalNames, symbolicNames) + } else if elemsAreChar { + return i.toCharString() + } + + return i.toIndexString() +} + +func (i *IntervalSet) GetIntervals() []Interval { + return i.intervals +} + +func (i *IntervalSet) toCharString() string { + names := make([]string, len(i.intervals)) + + var sb strings.Builder + + for j := 0; j < len(i.intervals); j++ { + v := i.intervals[j] + if v.Stop == v.Start+1 { + if v.Start == TokenEOF { + names = append(names, "") + } else { + sb.WriteByte('\'') + sb.WriteRune(rune(v.Start)) + sb.WriteByte('\'') + names = append(names, sb.String()) + sb.Reset() + } + } else { + sb.WriteByte('\'') + sb.WriteRune(rune(v.Start)) + sb.WriteString("'..'") + sb.WriteRune(rune(v.Stop - 1)) + sb.WriteByte('\'') + names = append(names, sb.String()) + sb.Reset() + } + } + if len(names) > 1 { + return "{" + strings.Join(names, ", ") + "}" + } + + return names[0] +} + +func (i *IntervalSet) toIndexString() string { + + names := make([]string, 0) + for j := 0; j < len(i.intervals); j++ { + v := i.intervals[j] + if v.Stop == v.Start+1 { + if v.Start == TokenEOF { + names = append(names, "") + } else { + names = append(names, strconv.Itoa(v.Start)) + } + } else { + names = append(names, strconv.Itoa(v.Start)+".."+strconv.Itoa(v.Stop-1)) + } + } + if len(names) > 1 { + return "{" + strings.Join(names, ", ") + "}" + } + + return names[0] +} + +func (i *IntervalSet) toTokenString(literalNames []string, symbolicNames []string) string { + names := make([]string, 0) + for _, v := range i.intervals { + for j := v.Start; j < v.Stop; j++ { + names = append(names, i.elementName(literalNames, symbolicNames, j)) + } + } + if len(names) > 1 { + return "{" + strings.Join(names, ", ") + "}" + } + + return names[0] +} + +func (i *IntervalSet) elementName(literalNames []string, symbolicNames []string, a int) string { + if a == TokenEOF { + return "" + } else if a == TokenEpsilon { + return "" + } else { + if a < len(literalNames) && literalNames[a] != "" { + return literalNames[a] + } + + return symbolicNames[a] + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/jcollect.go b/vendor/github.com/antlr4-go/antlr/v4/jcollect.go new file mode 100644 index 0000000000..ceccd96d25 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/jcollect.go @@ -0,0 +1,685 @@ +package antlr + +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +import ( + "container/list" + "runtime/debug" + "sort" + "sync" +) + +// Collectable is an interface that a struct should implement if it is to be +// usable as a key in these collections. +type Collectable[T any] interface { + Hash() int + Equals(other Collectable[T]) bool +} + +type Comparator[T any] interface { + Hash1(o T) int + Equals2(T, T) bool +} + +type CollectionSource int +type CollectionDescriptor struct { + SybolicName string + Description string +} + +const ( + UnknownCollection CollectionSource = iota + ATNConfigLookupCollection + ATNStateCollection + DFAStateCollection + ATNConfigCollection + PredictionContextCollection + SemanticContextCollection + ClosureBusyCollection + PredictionVisitedCollection + MergeCacheCollection + PredictionContextCacheCollection + AltSetCollection + ReachSetCollection +) + +var CollectionDescriptors = map[CollectionSource]CollectionDescriptor{ + UnknownCollection: { + SybolicName: "UnknownCollection", + Description: "Unknown collection type. Only used if the target author thought it was an unimportant collection.", + }, + ATNConfigCollection: { + SybolicName: "ATNConfigCollection", + Description: "ATNConfig collection. Used to store the ATNConfigs for a particular state in the ATN." + + "For instance, it is used to store the results of the closure() operation in the ATN.", + }, + ATNConfigLookupCollection: { + SybolicName: "ATNConfigLookupCollection", + Description: "ATNConfigLookup collection. Used to store the ATNConfigs for a particular state in the ATN." + + "This is used to prevent duplicating equivalent states in an ATNConfigurationSet.", + }, + ATNStateCollection: { + SybolicName: "ATNStateCollection", + Description: "ATNState collection. This is used to store the states of the ATN.", + }, + DFAStateCollection: { + SybolicName: "DFAStateCollection", + Description: "DFAState collection. This is used to store the states of the DFA.", + }, + PredictionContextCollection: { + SybolicName: "PredictionContextCollection", + Description: "PredictionContext collection. This is used to store the prediction contexts of the ATN and cache computes.", + }, + SemanticContextCollection: { + SybolicName: "SemanticContextCollection", + Description: "SemanticContext collection. This is used to store the semantic contexts of the ATN.", + }, + ClosureBusyCollection: { + SybolicName: "ClosureBusyCollection", + Description: "ClosureBusy collection. This is used to check and prevent infinite recursion right recursive rules." + + "It stores ATNConfigs that are currently being processed in the closure() operation.", + }, + PredictionVisitedCollection: { + SybolicName: "PredictionVisitedCollection", + Description: "A map that records whether we have visited a particular context when searching through cached entries.", + }, + MergeCacheCollection: { + SybolicName: "MergeCacheCollection", + Description: "A map that records whether we have already merged two particular contexts and can save effort by not repeating it.", + }, + PredictionContextCacheCollection: { + SybolicName: "PredictionContextCacheCollection", + Description: "A map that records whether we have already created a particular context and can save effort by not computing it again.", + }, + AltSetCollection: { + SybolicName: "AltSetCollection", + Description: "Used to eliminate duplicate alternatives in an ATN config set.", + }, + ReachSetCollection: { + SybolicName: "ReachSetCollection", + Description: "Used as merge cache to prevent us needing to compute the merge of two states if we have already done it.", + }, +} + +// JStore implements a container that allows the use of a struct to calculate the key +// for a collection of values akin to map. This is not meant to be a full-blown HashMap but just +// serve the needs of the ANTLR Go runtime. +// +// For ease of porting the logic of the runtime from the master target (Java), this collection +// operates in a similar way to Java, in that it can use any struct that supplies a Hash() and Equals() +// function as the key. The values are stored in a standard go map which internally is a form of hashmap +// itself, the key for the go map is the hash supplied by the key object. The collection is able to deal with +// hash conflicts by using a simple slice of values associated with the hash code indexed bucket. That isn't +// particularly efficient, but it is simple, and it works. As this is specifically for the ANTLR runtime, and +// we understand the requirements, then this is fine - this is not a general purpose collection. +type JStore[T any, C Comparator[T]] struct { + store map[int][]T + len int + comparator Comparator[T] + stats *JStatRec +} + +func NewJStore[T any, C Comparator[T]](comparator Comparator[T], cType CollectionSource, desc string) *JStore[T, C] { + + if comparator == nil { + panic("comparator cannot be nil") + } + + s := &JStore[T, C]{ + store: make(map[int][]T, 1), + comparator: comparator, + } + if collectStats { + s.stats = &JStatRec{ + Source: cType, + Description: desc, + } + + // Track where we created it from if we are being asked to do so + if runtimeConfig.statsTraceStacks { + s.stats.CreateStack = debug.Stack() + } + Statistics.AddJStatRec(s.stats) + } + return s +} + +// Put will store given value in the collection. Note that the key for storage is generated from +// the value itself - this is specifically because that is what ANTLR needs - this would not be useful +// as any kind of general collection. +// +// If the key has a hash conflict, then the value will be added to the slice of values associated with the +// hash, unless the value is already in the slice, in which case the existing value is returned. Value equivalence is +// tested by calling the equals() method on the key. +// +// # If the given value is already present in the store, then the existing value is returned as v and exists is set to true +// +// If the given value is not present in the store, then the value is added to the store and returned as v and exists is set to false. +func (s *JStore[T, C]) Put(value T) (v T, exists bool) { + + if collectStats { + s.stats.Puts++ + } + kh := s.comparator.Hash1(value) + + var hClash bool + for _, v1 := range s.store[kh] { + hClash = true + if s.comparator.Equals2(value, v1) { + if collectStats { + s.stats.PutHits++ + s.stats.PutHashConflicts++ + } + return v1, true + } + if collectStats { + s.stats.PutMisses++ + } + } + if collectStats && hClash { + s.stats.PutHashConflicts++ + } + s.store[kh] = append(s.store[kh], value) + + if collectStats { + if len(s.store[kh]) > s.stats.MaxSlotSize { + s.stats.MaxSlotSize = len(s.store[kh]) + } + } + s.len++ + if collectStats { + s.stats.CurSize = s.len + if s.len > s.stats.MaxSize { + s.stats.MaxSize = s.len + } + } + return value, false +} + +// Get will return the value associated with the key - the type of the key is the same type as the value +// which would not generally be useful, but this is a specific thing for ANTLR where the key is +// generated using the object we are going to store. +func (s *JStore[T, C]) Get(key T) (T, bool) { + if collectStats { + s.stats.Gets++ + } + kh := s.comparator.Hash1(key) + var hClash bool + for _, v := range s.store[kh] { + hClash = true + if s.comparator.Equals2(key, v) { + if collectStats { + s.stats.GetHits++ + s.stats.GetHashConflicts++ + } + return v, true + } + if collectStats { + s.stats.GetMisses++ + } + } + if collectStats { + if hClash { + s.stats.GetHashConflicts++ + } + s.stats.GetNoEnt++ + } + return key, false +} + +// Contains returns true if the given key is present in the store +func (s *JStore[T, C]) Contains(key T) bool { + _, present := s.Get(key) + return present +} + +func (s *JStore[T, C]) SortedSlice(less func(i, j T) bool) []T { + vs := make([]T, 0, len(s.store)) + for _, v := range s.store { + vs = append(vs, v...) + } + sort.Slice(vs, func(i, j int) bool { + return less(vs[i], vs[j]) + }) + + return vs +} + +func (s *JStore[T, C]) Each(f func(T) bool) { + for _, e := range s.store { + for _, v := range e { + f(v) + } + } +} + +func (s *JStore[T, C]) Len() int { + return s.len +} + +func (s *JStore[T, C]) Values() []T { + vs := make([]T, 0, len(s.store)) + for _, e := range s.store { + vs = append(vs, e...) + } + return vs +} + +type entry[K, V any] struct { + key K + val V +} + +type JMap[K, V any, C Comparator[K]] struct { + store map[int][]*entry[K, V] + len int + comparator Comparator[K] + stats *JStatRec +} + +func NewJMap[K, V any, C Comparator[K]](comparator Comparator[K], cType CollectionSource, desc string) *JMap[K, V, C] { + m := &JMap[K, V, C]{ + store: make(map[int][]*entry[K, V], 1), + comparator: comparator, + } + if collectStats { + m.stats = &JStatRec{ + Source: cType, + Description: desc, + } + // Track where we created it from if we are being asked to do so + if runtimeConfig.statsTraceStacks { + m.stats.CreateStack = debug.Stack() + } + Statistics.AddJStatRec(m.stats) + } + return m +} + +func (m *JMap[K, V, C]) Put(key K, val V) (V, bool) { + if collectStats { + m.stats.Puts++ + } + kh := m.comparator.Hash1(key) + + var hClash bool + for _, e := range m.store[kh] { + hClash = true + if m.comparator.Equals2(e.key, key) { + if collectStats { + m.stats.PutHits++ + m.stats.PutHashConflicts++ + } + return e.val, true + } + if collectStats { + m.stats.PutMisses++ + } + } + if collectStats { + if hClash { + m.stats.PutHashConflicts++ + } + } + m.store[kh] = append(m.store[kh], &entry[K, V]{key, val}) + if collectStats { + if len(m.store[kh]) > m.stats.MaxSlotSize { + m.stats.MaxSlotSize = len(m.store[kh]) + } + } + m.len++ + if collectStats { + m.stats.CurSize = m.len + if m.len > m.stats.MaxSize { + m.stats.MaxSize = m.len + } + } + return val, false +} + +func (m *JMap[K, V, C]) Values() []V { + vs := make([]V, 0, len(m.store)) + for _, e := range m.store { + for _, v := range e { + vs = append(vs, v.val) + } + } + return vs +} + +func (m *JMap[K, V, C]) Get(key K) (V, bool) { + if collectStats { + m.stats.Gets++ + } + var none V + kh := m.comparator.Hash1(key) + var hClash bool + for _, e := range m.store[kh] { + hClash = true + if m.comparator.Equals2(e.key, key) { + if collectStats { + m.stats.GetHits++ + m.stats.GetHashConflicts++ + } + return e.val, true + } + if collectStats { + m.stats.GetMisses++ + } + } + if collectStats { + if hClash { + m.stats.GetHashConflicts++ + } + m.stats.GetNoEnt++ + } + return none, false +} + +func (m *JMap[K, V, C]) Len() int { + return m.len +} + +func (m *JMap[K, V, C]) Delete(key K) { + kh := m.comparator.Hash1(key) + for i, e := range m.store[kh] { + if m.comparator.Equals2(e.key, key) { + m.store[kh] = append(m.store[kh][:i], m.store[kh][i+1:]...) + m.len-- + return + } + } +} + +func (m *JMap[K, V, C]) Clear() { + m.store = make(map[int][]*entry[K, V]) +} + +type JPCMap struct { + store *JMap[*PredictionContext, *JMap[*PredictionContext, *PredictionContext, *ObjEqComparator[*PredictionContext]], *ObjEqComparator[*PredictionContext]] + size int + stats *JStatRec +} + +func NewJPCMap(cType CollectionSource, desc string) *JPCMap { + m := &JPCMap{ + store: NewJMap[*PredictionContext, *JMap[*PredictionContext, *PredictionContext, *ObjEqComparator[*PredictionContext]], *ObjEqComparator[*PredictionContext]](pContextEqInst, cType, desc), + } + if collectStats { + m.stats = &JStatRec{ + Source: cType, + Description: desc, + } + // Track where we created it from if we are being asked to do so + if runtimeConfig.statsTraceStacks { + m.stats.CreateStack = debug.Stack() + } + Statistics.AddJStatRec(m.stats) + } + return m +} + +func (pcm *JPCMap) Get(k1, k2 *PredictionContext) (*PredictionContext, bool) { + if collectStats { + pcm.stats.Gets++ + } + // Do we have a map stored by k1? + // + m2, present := pcm.store.Get(k1) + if present { + if collectStats { + pcm.stats.GetHits++ + } + // We found a map of values corresponding to k1, so now we need to look up k2 in that map + // + return m2.Get(k2) + } + if collectStats { + pcm.stats.GetMisses++ + } + return nil, false +} + +func (pcm *JPCMap) Put(k1, k2, v *PredictionContext) { + + if collectStats { + pcm.stats.Puts++ + } + // First does a map already exist for k1? + // + if m2, present := pcm.store.Get(k1); present { + if collectStats { + pcm.stats.PutHits++ + } + _, present = m2.Put(k2, v) + if !present { + pcm.size++ + if collectStats { + pcm.stats.CurSize = pcm.size + if pcm.size > pcm.stats.MaxSize { + pcm.stats.MaxSize = pcm.size + } + } + } + } else { + // No map found for k1, so we create it, add in our value, then store is + // + if collectStats { + pcm.stats.PutMisses++ + m2 = NewJMap[*PredictionContext, *PredictionContext, *ObjEqComparator[*PredictionContext]](pContextEqInst, pcm.stats.Source, pcm.stats.Description+" map entry") + } else { + m2 = NewJMap[*PredictionContext, *PredictionContext, *ObjEqComparator[*PredictionContext]](pContextEqInst, PredictionContextCacheCollection, "map entry") + } + + m2.Put(k2, v) + pcm.store.Put(k1, m2) + pcm.size++ + } +} + +type JPCMap2 struct { + store map[int][]JPCEntry + size int + stats *JStatRec +} + +type JPCEntry struct { + k1, k2, v *PredictionContext +} + +func NewJPCMap2(cType CollectionSource, desc string) *JPCMap2 { + m := &JPCMap2{ + store: make(map[int][]JPCEntry, 1000), + } + if collectStats { + m.stats = &JStatRec{ + Source: cType, + Description: desc, + } + // Track where we created it from if we are being asked to do so + if runtimeConfig.statsTraceStacks { + m.stats.CreateStack = debug.Stack() + } + Statistics.AddJStatRec(m.stats) + } + return m +} + +func dHash(k1, k2 *PredictionContext) int { + return k1.cachedHash*31 + k2.cachedHash +} + +func (pcm *JPCMap2) Get(k1, k2 *PredictionContext) (*PredictionContext, bool) { + if collectStats { + pcm.stats.Gets++ + } + + h := dHash(k1, k2) + var hClash bool + for _, e := range pcm.store[h] { + hClash = true + if e.k1.Equals(k1) && e.k2.Equals(k2) { + if collectStats { + pcm.stats.GetHits++ + pcm.stats.GetHashConflicts++ + } + return e.v, true + } + if collectStats { + pcm.stats.GetMisses++ + } + } + if collectStats { + if hClash { + pcm.stats.GetHashConflicts++ + } + pcm.stats.GetNoEnt++ + } + return nil, false +} + +func (pcm *JPCMap2) Put(k1, k2, v *PredictionContext) (*PredictionContext, bool) { + if collectStats { + pcm.stats.Puts++ + } + h := dHash(k1, k2) + var hClash bool + for _, e := range pcm.store[h] { + hClash = true + if e.k1.Equals(k1) && e.k2.Equals(k2) { + if collectStats { + pcm.stats.PutHits++ + pcm.stats.PutHashConflicts++ + } + return e.v, true + } + if collectStats { + pcm.stats.PutMisses++ + } + } + if collectStats { + if hClash { + pcm.stats.PutHashConflicts++ + } + } + pcm.store[h] = append(pcm.store[h], JPCEntry{k1, k2, v}) + pcm.size++ + if collectStats { + pcm.stats.CurSize = pcm.size + if pcm.size > pcm.stats.MaxSize { + pcm.stats.MaxSize = pcm.size + } + } + return nil, false +} + +type VisitEntry struct { + k *PredictionContext + v *PredictionContext +} +type VisitRecord struct { + store map[*PredictionContext]*PredictionContext + len int + stats *JStatRec +} + +type VisitList struct { + cache *list.List + lock sync.RWMutex +} + +var visitListPool = VisitList{ + cache: list.New(), + lock: sync.RWMutex{}, +} + +// NewVisitRecord returns a new VisitRecord instance from the pool if available. +// Note that this "map" uses a pointer as a key because we are emulating the behavior of +// IdentityHashMap in Java, which uses the `==` operator to compare whether the keys are equal, +// which means is the key the same reference to an object rather than is it .equals() to another +// object. +func NewVisitRecord() *VisitRecord { + visitListPool.lock.Lock() + el := visitListPool.cache.Front() + defer visitListPool.lock.Unlock() + var vr *VisitRecord + if el == nil { + vr = &VisitRecord{ + store: make(map[*PredictionContext]*PredictionContext), + } + if collectStats { + vr.stats = &JStatRec{ + Source: PredictionContextCacheCollection, + Description: "VisitRecord", + } + // Track where we created it from if we are being asked to do so + if runtimeConfig.statsTraceStacks { + vr.stats.CreateStack = debug.Stack() + } + } + } else { + vr = el.Value.(*VisitRecord) + visitListPool.cache.Remove(el) + vr.store = make(map[*PredictionContext]*PredictionContext) + } + if collectStats { + Statistics.AddJStatRec(vr.stats) + } + return vr +} + +func (vr *VisitRecord) Release() { + vr.len = 0 + vr.store = nil + if collectStats { + vr.stats.MaxSize = 0 + vr.stats.CurSize = 0 + vr.stats.Gets = 0 + vr.stats.GetHits = 0 + vr.stats.GetMisses = 0 + vr.stats.GetHashConflicts = 0 + vr.stats.GetNoEnt = 0 + vr.stats.Puts = 0 + vr.stats.PutHits = 0 + vr.stats.PutMisses = 0 + vr.stats.PutHashConflicts = 0 + vr.stats.MaxSlotSize = 0 + } + visitListPool.lock.Lock() + visitListPool.cache.PushBack(vr) + visitListPool.lock.Unlock() +} + +func (vr *VisitRecord) Get(k *PredictionContext) (*PredictionContext, bool) { + if collectStats { + vr.stats.Gets++ + } + v := vr.store[k] + if v != nil { + if collectStats { + vr.stats.GetHits++ + } + return v, true + } + if collectStats { + vr.stats.GetNoEnt++ + } + return nil, false +} + +func (vr *VisitRecord) Put(k, v *PredictionContext) (*PredictionContext, bool) { + if collectStats { + vr.stats.Puts++ + } + vr.store[k] = v + vr.len++ + if collectStats { + vr.stats.CurSize = vr.len + if vr.len > vr.stats.MaxSize { + vr.stats.MaxSize = vr.len + } + } + return v, false +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/lexer.go b/vendor/github.com/antlr4-go/antlr/v4/lexer.go new file mode 100644 index 0000000000..3c7896a918 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/lexer.go @@ -0,0 +1,426 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" +) + +// A lexer is recognizer that draws input symbols from a character stream. +// lexer grammars result in a subclass of this object. A Lexer object +// uses simplified Match() and error recovery mechanisms in the interest +// of speed. +/// + +type Lexer interface { + TokenSource + Recognizer + + Emit() Token + + SetChannel(int) + PushMode(int) + PopMode() int + SetType(int) + SetMode(int) +} + +type BaseLexer struct { + *BaseRecognizer + + Interpreter ILexerATNSimulator + TokenStartCharIndex int + TokenStartLine int + TokenStartColumn int + ActionType int + Virt Lexer // The most derived lexer implementation. Allows virtual method calls. + + input CharStream + factory TokenFactory + tokenFactorySourcePair *TokenSourceCharStreamPair + token Token + hitEOF bool + channel int + thetype int + modeStack IntStack + mode int + text string +} + +func NewBaseLexer(input CharStream) *BaseLexer { + + lexer := new(BaseLexer) + + lexer.BaseRecognizer = NewBaseRecognizer() + + lexer.input = input + lexer.factory = CommonTokenFactoryDEFAULT + lexer.tokenFactorySourcePair = &TokenSourceCharStreamPair{lexer, input} + + lexer.Virt = lexer + + lexer.Interpreter = nil // child classes must populate it + + // The goal of all lexer rules/methods is to create a token object. + // l is an instance variable as multiple rules may collaborate to + // create a single token. NextToken will return l object after + // Matching lexer rule(s). If you subclass to allow multiple token + // emissions, then set l to the last token to be Matched or + // something non nil so that the auto token emit mechanism will not + // emit another token. + lexer.token = nil + + // What character index in the stream did the current token start at? + // Needed, for example, to get the text for current token. Set at + // the start of NextToken. + lexer.TokenStartCharIndex = -1 + + // The line on which the first character of the token resides/// + lexer.TokenStartLine = -1 + + // The character position of first character within the line/// + lexer.TokenStartColumn = -1 + + // Once we see EOF on char stream, next token will be EOF. + // If you have DONE : EOF then you see DONE EOF. + lexer.hitEOF = false + + // The channel number for the current token/// + lexer.channel = TokenDefaultChannel + + // The token type for the current token/// + lexer.thetype = TokenInvalidType + + lexer.modeStack = make([]int, 0) + lexer.mode = LexerDefaultMode + + // You can set the text for the current token to override what is in + // the input char buffer. Use setText() or can set l instance var. + // / + lexer.text = "" + + return lexer +} + +const ( + LexerDefaultMode = 0 + LexerMore = -2 + LexerSkip = -3 +) + +//goland:noinspection GoUnusedConst +const ( + LexerDefaultTokenChannel = TokenDefaultChannel + LexerHidden = TokenHiddenChannel + LexerMinCharValue = 0x0000 + LexerMaxCharValue = 0x10FFFF +) + +func (b *BaseLexer) Reset() { + // wack Lexer state variables + if b.input != nil { + b.input.Seek(0) // rewind the input + } + b.token = nil + b.thetype = TokenInvalidType + b.channel = TokenDefaultChannel + b.TokenStartCharIndex = -1 + b.TokenStartColumn = -1 + b.TokenStartLine = -1 + b.text = "" + + b.hitEOF = false + b.mode = LexerDefaultMode + b.modeStack = make([]int, 0) + + b.Interpreter.reset() +} + +func (b *BaseLexer) GetInterpreter() ILexerATNSimulator { + return b.Interpreter +} + +func (b *BaseLexer) GetInputStream() CharStream { + return b.input +} + +func (b *BaseLexer) GetSourceName() string { + return b.GrammarFileName +} + +func (b *BaseLexer) SetChannel(v int) { + b.channel = v +} + +func (b *BaseLexer) GetTokenFactory() TokenFactory { + return b.factory +} + +func (b *BaseLexer) setTokenFactory(f TokenFactory) { + b.factory = f +} + +func (b *BaseLexer) safeMatch() (ret int) { + defer func() { + if e := recover(); e != nil { + if re, ok := e.(RecognitionException); ok { + b.notifyListeners(re) // Report error + b.Recover(re) + ret = LexerSkip // default + } + } + }() + + return b.Interpreter.Match(b.input, b.mode) +} + +// NextToken returns a token from the lexer input source i.e., Match a token on the source char stream. +func (b *BaseLexer) NextToken() Token { + if b.input == nil { + panic("NextToken requires a non-nil input stream.") + } + + tokenStartMarker := b.input.Mark() + + // previously in finally block + defer func() { + // make sure we release marker after Match or + // unbuffered char stream will keep buffering + b.input.Release(tokenStartMarker) + }() + + for { + if b.hitEOF { + b.EmitEOF() + return b.token + } + b.token = nil + b.channel = TokenDefaultChannel + b.TokenStartCharIndex = b.input.Index() + b.TokenStartColumn = b.Interpreter.GetCharPositionInLine() + b.TokenStartLine = b.Interpreter.GetLine() + b.text = "" + continueOuter := false + for { + b.thetype = TokenInvalidType + + ttype := b.safeMatch() + + if b.input.LA(1) == TokenEOF { + b.hitEOF = true + } + if b.thetype == TokenInvalidType { + b.thetype = ttype + } + if b.thetype == LexerSkip { + continueOuter = true + break + } + if b.thetype != LexerMore { + break + } + } + + if continueOuter { + continue + } + if b.token == nil { + b.Virt.Emit() + } + return b.token + } +} + +// Skip instructs the lexer to Skip creating a token for current lexer rule +// and look for another token. [NextToken] knows to keep looking when +// a lexer rule finishes with token set to [SKIPTOKEN]. Recall that +// if token==nil at end of any token rule, it creates one for you +// and emits it. +func (b *BaseLexer) Skip() { + b.thetype = LexerSkip +} + +func (b *BaseLexer) More() { + b.thetype = LexerMore +} + +// SetMode changes the lexer to a new mode. The lexer will use this mode from hereon in and the rules for that mode +// will be in force. +func (b *BaseLexer) SetMode(m int) { + b.mode = m +} + +// PushMode saves the current lexer mode so that it can be restored later. See [PopMode], then sets the +// current lexer mode to the supplied mode m. +func (b *BaseLexer) PushMode(m int) { + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("pushMode " + strconv.Itoa(m)) + } + b.modeStack.Push(b.mode) + b.mode = m +} + +// PopMode restores the lexer mode saved by a call to [PushMode]. It is a panic error if there is no saved mode to +// return to. +func (b *BaseLexer) PopMode() int { + if len(b.modeStack) == 0 { + panic("Empty Stack") + } + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("popMode back to " + fmt.Sprint(b.modeStack[0:len(b.modeStack)-1])) + } + i, _ := b.modeStack.Pop() + b.mode = i + return b.mode +} + +func (b *BaseLexer) inputStream() CharStream { + return b.input +} + +// SetInputStream resets the lexer input stream and associated lexer state. +func (b *BaseLexer) SetInputStream(input CharStream) { + b.input = nil + b.tokenFactorySourcePair = &TokenSourceCharStreamPair{b, b.input} + b.Reset() + b.input = input + b.tokenFactorySourcePair = &TokenSourceCharStreamPair{b, b.input} +} + +func (b *BaseLexer) GetTokenSourceCharStreamPair() *TokenSourceCharStreamPair { + return b.tokenFactorySourcePair +} + +// EmitToken by default does not support multiple emits per [NextToken] invocation +// for efficiency reasons. Subclass and override this func, [NextToken], +// and [GetToken] (to push tokens into a list and pull from that list +// rather than a single variable as this implementation does). +func (b *BaseLexer) EmitToken(token Token) { + b.token = token +} + +// Emit is the standard method called to automatically emit a token at the +// outermost lexical rule. The token object should point into the +// char buffer start..stop. If there is a text override in 'text', +// use that to set the token's text. Override this method to emit +// custom [Token] objects or provide a new factory. +// / +func (b *BaseLexer) Emit() Token { + t := b.factory.Create(b.tokenFactorySourcePair, b.thetype, b.text, b.channel, b.TokenStartCharIndex, b.GetCharIndex()-1, b.TokenStartLine, b.TokenStartColumn) + b.EmitToken(t) + return t +} + +// EmitEOF emits an EOF token. By default, this is the last token emitted +func (b *BaseLexer) EmitEOF() Token { + cpos := b.GetCharPositionInLine() + lpos := b.GetLine() + eof := b.factory.Create(b.tokenFactorySourcePair, TokenEOF, "", TokenDefaultChannel, b.input.Index(), b.input.Index()-1, lpos, cpos) + b.EmitToken(eof) + return eof +} + +// GetCharPositionInLine returns the current position in the current line as far as the lexer is concerned. +func (b *BaseLexer) GetCharPositionInLine() int { + return b.Interpreter.GetCharPositionInLine() +} + +func (b *BaseLexer) GetLine() int { + return b.Interpreter.GetLine() +} + +func (b *BaseLexer) GetType() int { + return b.thetype +} + +func (b *BaseLexer) SetType(t int) { + b.thetype = t +} + +// GetCharIndex returns the index of the current character of lookahead +func (b *BaseLexer) GetCharIndex() int { + return b.input.Index() +} + +// GetText returns the text Matched so far for the current token or any text override. +func (b *BaseLexer) GetText() string { + if b.text != "" { + return b.text + } + + return b.Interpreter.GetText(b.input) +} + +// SetText sets the complete text of this token; it wipes any previous changes to the text. +func (b *BaseLexer) SetText(text string) { + b.text = text +} + +// GetATN returns the ATN used by the lexer. +func (b *BaseLexer) GetATN() *ATN { + return b.Interpreter.ATN() +} + +// GetAllTokens returns a list of all [Token] objects in input char stream. +// Forces a load of all tokens that can be made from the input char stream. +// +// Does not include EOF token. +func (b *BaseLexer) GetAllTokens() []Token { + vl := b.Virt + tokens := make([]Token, 0) + t := vl.NextToken() + for t.GetTokenType() != TokenEOF { + tokens = append(tokens, t) + t = vl.NextToken() + } + return tokens +} + +func (b *BaseLexer) notifyListeners(e RecognitionException) { + start := b.TokenStartCharIndex + stop := b.input.Index() + text := b.input.GetTextFromInterval(NewInterval(start, stop)) + msg := "token recognition error at: '" + text + "'" + listener := b.GetErrorListenerDispatch() + listener.SyntaxError(b, nil, b.TokenStartLine, b.TokenStartColumn, msg, e) +} + +func (b *BaseLexer) getErrorDisplayForChar(c rune) string { + if c == TokenEOF { + return "" + } else if c == '\n' { + return "\\n" + } else if c == '\t' { + return "\\t" + } else if c == '\r' { + return "\\r" + } else { + return string(c) + } +} + +func (b *BaseLexer) getCharErrorDisplay(c rune) string { + return "'" + b.getErrorDisplayForChar(c) + "'" +} + +// Recover can normally Match any char in its vocabulary after Matching +// a token, so here we do the easy thing and just kill a character and hope +// it all works out. You can instead use the rule invocation stack +// to do sophisticated error recovery if you are in a fragment rule. +// +// In general, lexers should not need to recover and should have rules that cover any eventuality, such as +// a character that makes no sense to the recognizer. +func (b *BaseLexer) Recover(re RecognitionException) { + if b.input.LA(1) != TokenEOF { + if _, ok := re.(*LexerNoViableAltException); ok { + // Skip a char and try again + b.Interpreter.Consume(b.input) + } else { + // TODO: Do we lose character or line position information? + b.input.Consume() + } + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/lexer_action.go b/vendor/github.com/antlr4-go/antlr/v4/lexer_action.go new file mode 100644 index 0000000000..eaa7393e06 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/lexer_action.go @@ -0,0 +1,452 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import "strconv" + +const ( + // LexerActionTypeChannel represents a [LexerChannelAction] action. + LexerActionTypeChannel = 0 + + // LexerActionTypeCustom represents a [LexerCustomAction] action. + LexerActionTypeCustom = 1 + + // LexerActionTypeMode represents a [LexerModeAction] action. + LexerActionTypeMode = 2 + + // LexerActionTypeMore represents a [LexerMoreAction] action. + LexerActionTypeMore = 3 + + // LexerActionTypePopMode represents a [LexerPopModeAction] action. + LexerActionTypePopMode = 4 + + // LexerActionTypePushMode represents a [LexerPushModeAction] action. + LexerActionTypePushMode = 5 + + // LexerActionTypeSkip represents a [LexerSkipAction] action. + LexerActionTypeSkip = 6 + + // LexerActionTypeType represents a [LexerTypeAction] action. + LexerActionTypeType = 7 +) + +type LexerAction interface { + getActionType() int + getIsPositionDependent() bool + execute(lexer Lexer) + Hash() int + Equals(other LexerAction) bool +} + +type BaseLexerAction struct { + actionType int + isPositionDependent bool +} + +func NewBaseLexerAction(action int) *BaseLexerAction { + la := new(BaseLexerAction) + + la.actionType = action + la.isPositionDependent = false + + return la +} + +func (b *BaseLexerAction) execute(_ Lexer) { + panic("Not implemented") +} + +func (b *BaseLexerAction) getActionType() int { + return b.actionType +} + +func (b *BaseLexerAction) getIsPositionDependent() bool { + return b.isPositionDependent +} + +func (b *BaseLexerAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, b.actionType) + return murmurFinish(h, 1) +} + +func (b *BaseLexerAction) Equals(other LexerAction) bool { + return b.actionType == other.getActionType() +} + +// LexerSkipAction implements the [BaseLexerAction.Skip] lexer action by calling [Lexer.Skip]. +// +// The Skip command does not have any parameters, so this action is +// implemented as a singleton instance exposed by the [LexerSkipActionINSTANCE]. +type LexerSkipAction struct { + *BaseLexerAction +} + +func NewLexerSkipAction() *LexerSkipAction { + la := new(LexerSkipAction) + la.BaseLexerAction = NewBaseLexerAction(LexerActionTypeSkip) + return la +} + +// LexerSkipActionINSTANCE provides a singleton instance of this parameterless lexer action. +var LexerSkipActionINSTANCE = NewLexerSkipAction() + +func (l *LexerSkipAction) execute(lexer Lexer) { + lexer.Skip() +} + +// String returns a string representation of the current [LexerSkipAction]. +func (l *LexerSkipAction) String() string { + return "skip" +} + +func (b *LexerSkipAction) Equals(other LexerAction) bool { + return other.getActionType() == LexerActionTypeSkip +} + +// Implements the {@code type} lexer action by calling {@link Lexer//setType} +// +// with the assigned type. +type LexerTypeAction struct { + *BaseLexerAction + + thetype int +} + +func NewLexerTypeAction(thetype int) *LexerTypeAction { + l := new(LexerTypeAction) + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypeType) + l.thetype = thetype + return l +} + +func (l *LexerTypeAction) execute(lexer Lexer) { + lexer.SetType(l.thetype) +} + +func (l *LexerTypeAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, l.actionType) + h = murmurUpdate(h, l.thetype) + return murmurFinish(h, 2) +} + +func (l *LexerTypeAction) Equals(other LexerAction) bool { + if l == other { + return true + } else if _, ok := other.(*LexerTypeAction); !ok { + return false + } else { + return l.thetype == other.(*LexerTypeAction).thetype + } +} + +func (l *LexerTypeAction) String() string { + return "actionType(" + strconv.Itoa(l.thetype) + ")" +} + +// LexerPushModeAction implements the pushMode lexer action by calling +// [Lexer.pushMode] with the assigned mode. +type LexerPushModeAction struct { + *BaseLexerAction + mode int +} + +func NewLexerPushModeAction(mode int) *LexerPushModeAction { + + l := new(LexerPushModeAction) + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypePushMode) + + l.mode = mode + return l +} + +//

This action is implemented by calling {@link Lexer//pushMode} with the +// value provided by {@link //getMode}.

+func (l *LexerPushModeAction) execute(lexer Lexer) { + lexer.PushMode(l.mode) +} + +func (l *LexerPushModeAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, l.actionType) + h = murmurUpdate(h, l.mode) + return murmurFinish(h, 2) +} + +func (l *LexerPushModeAction) Equals(other LexerAction) bool { + if l == other { + return true + } else if _, ok := other.(*LexerPushModeAction); !ok { + return false + } else { + return l.mode == other.(*LexerPushModeAction).mode + } +} + +func (l *LexerPushModeAction) String() string { + return "pushMode(" + strconv.Itoa(l.mode) + ")" +} + +// LexerPopModeAction implements the popMode lexer action by calling [Lexer.popMode]. +// +// The popMode command does not have any parameters, so this action is +// implemented as a singleton instance exposed by [LexerPopModeActionINSTANCE] +type LexerPopModeAction struct { + *BaseLexerAction +} + +func NewLexerPopModeAction() *LexerPopModeAction { + + l := new(LexerPopModeAction) + + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypePopMode) + + return l +} + +var LexerPopModeActionINSTANCE = NewLexerPopModeAction() + +//

This action is implemented by calling {@link Lexer//popMode}.

+func (l *LexerPopModeAction) execute(lexer Lexer) { + lexer.PopMode() +} + +func (l *LexerPopModeAction) String() string { + return "popMode" +} + +// Implements the {@code more} lexer action by calling {@link Lexer//more}. +// +//

The {@code more} command does not have any parameters, so l action is +// implemented as a singleton instance exposed by {@link //INSTANCE}.

+ +type LexerMoreAction struct { + *BaseLexerAction +} + +func NewLexerMoreAction() *LexerMoreAction { + l := new(LexerMoreAction) + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypeMore) + + return l +} + +var LexerMoreActionINSTANCE = NewLexerMoreAction() + +//

This action is implemented by calling {@link Lexer//popMode}.

+func (l *LexerMoreAction) execute(lexer Lexer) { + lexer.More() +} + +func (l *LexerMoreAction) String() string { + return "more" +} + +// LexerModeAction implements the mode lexer action by calling [Lexer.mode] with +// the assigned mode. +type LexerModeAction struct { + *BaseLexerAction + mode int +} + +func NewLexerModeAction(mode int) *LexerModeAction { + l := new(LexerModeAction) + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypeMode) + l.mode = mode + return l +} + +//

This action is implemented by calling {@link Lexer//mode} with the +// value provided by {@link //getMode}.

+func (l *LexerModeAction) execute(lexer Lexer) { + lexer.SetMode(l.mode) +} + +func (l *LexerModeAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, l.actionType) + h = murmurUpdate(h, l.mode) + return murmurFinish(h, 2) +} + +func (l *LexerModeAction) Equals(other LexerAction) bool { + if l == other { + return true + } else if _, ok := other.(*LexerModeAction); !ok { + return false + } else { + return l.mode == other.(*LexerModeAction).mode + } +} + +func (l *LexerModeAction) String() string { + return "mode(" + strconv.Itoa(l.mode) + ")" +} + +// Executes a custom lexer action by calling {@link Recognizer//action} with the +// rule and action indexes assigned to the custom action. The implementation of +// a custom action is added to the generated code for the lexer in an override +// of {@link Recognizer//action} when the grammar is compiled. +// +//

This class may represent embedded actions created with the {...} +// syntax in ANTLR 4, as well as actions created for lexer commands where the +// command argument could not be evaluated when the grammar was compiled.

+ +// Constructs a custom lexer action with the specified rule and action +// indexes. +// +// @param ruleIndex The rule index to use for calls to +// {@link Recognizer//action}. +// @param actionIndex The action index to use for calls to +// {@link Recognizer//action}. + +type LexerCustomAction struct { + *BaseLexerAction + ruleIndex, actionIndex int +} + +func NewLexerCustomAction(ruleIndex, actionIndex int) *LexerCustomAction { + l := new(LexerCustomAction) + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypeCustom) + l.ruleIndex = ruleIndex + l.actionIndex = actionIndex + l.isPositionDependent = true + return l +} + +//

Custom actions are implemented by calling {@link Lexer//action} with the +// appropriate rule and action indexes.

+func (l *LexerCustomAction) execute(lexer Lexer) { + lexer.Action(nil, l.ruleIndex, l.actionIndex) +} + +func (l *LexerCustomAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, l.actionType) + h = murmurUpdate(h, l.ruleIndex) + h = murmurUpdate(h, l.actionIndex) + return murmurFinish(h, 3) +} + +func (l *LexerCustomAction) Equals(other LexerAction) bool { + if l == other { + return true + } else if _, ok := other.(*LexerCustomAction); !ok { + return false + } else { + return l.ruleIndex == other.(*LexerCustomAction).ruleIndex && + l.actionIndex == other.(*LexerCustomAction).actionIndex + } +} + +// LexerChannelAction implements the channel lexer action by calling +// [Lexer.setChannel] with the assigned channel. +// +// Constructs a new channel action with the specified channel value. +type LexerChannelAction struct { + *BaseLexerAction + channel int +} + +// NewLexerChannelAction creates a channel lexer action by calling +// [Lexer.setChannel] with the assigned channel. +// +// Constructs a new channel action with the specified channel value. +func NewLexerChannelAction(channel int) *LexerChannelAction { + l := new(LexerChannelAction) + l.BaseLexerAction = NewBaseLexerAction(LexerActionTypeChannel) + l.channel = channel + return l +} + +//

This action is implemented by calling {@link Lexer//setChannel} with the +// value provided by {@link //getChannel}.

+func (l *LexerChannelAction) execute(lexer Lexer) { + lexer.SetChannel(l.channel) +} + +func (l *LexerChannelAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, l.actionType) + h = murmurUpdate(h, l.channel) + return murmurFinish(h, 2) +} + +func (l *LexerChannelAction) Equals(other LexerAction) bool { + if l == other { + return true + } else if _, ok := other.(*LexerChannelAction); !ok { + return false + } else { + return l.channel == other.(*LexerChannelAction).channel + } +} + +func (l *LexerChannelAction) String() string { + return "channel(" + strconv.Itoa(l.channel) + ")" +} + +// This implementation of {@link LexerAction} is used for tracking input offsets +// for position-dependent actions within a {@link LexerActionExecutor}. +// +//

This action is not serialized as part of the ATN, and is only required for +// position-dependent lexer actions which appear at a location other than the +// end of a rule. For more information about DFA optimizations employed for +// lexer actions, see {@link LexerActionExecutor//append} and +// {@link LexerActionExecutor//fixOffsetBeforeMatch}.

+ +type LexerIndexedCustomAction struct { + *BaseLexerAction + offset int + lexerAction LexerAction + isPositionDependent bool +} + +// NewLexerIndexedCustomAction constructs a new indexed custom action by associating a character offset +// with a [LexerAction]. +// +// Note: This class is only required for lexer actions for which +// [LexerAction.isPositionDependent] returns true. +// +// The offset points into the input [CharStream], relative to +// the token start index, at which the specified lexerAction should be +// executed. +func NewLexerIndexedCustomAction(offset int, lexerAction LexerAction) *LexerIndexedCustomAction { + + l := new(LexerIndexedCustomAction) + l.BaseLexerAction = NewBaseLexerAction(lexerAction.getActionType()) + + l.offset = offset + l.lexerAction = lexerAction + l.isPositionDependent = true + + return l +} + +//

This method calls {@link //execute} on the result of {@link //getAction} +// using the provided {@code lexer}.

+func (l *LexerIndexedCustomAction) execute(lexer Lexer) { + // assume the input stream position was properly set by the calling code + l.lexerAction.execute(lexer) +} + +func (l *LexerIndexedCustomAction) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, l.offset) + h = murmurUpdate(h, l.lexerAction.Hash()) + return murmurFinish(h, 2) +} + +func (l *LexerIndexedCustomAction) equals(other LexerAction) bool { + if l == other { + return true + } else if _, ok := other.(*LexerIndexedCustomAction); !ok { + return false + } else { + return l.offset == other.(*LexerIndexedCustomAction).offset && + l.lexerAction.Equals(other.(*LexerIndexedCustomAction).lexerAction) + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/lexer_action_executor.go b/vendor/github.com/antlr4-go/antlr/v4/lexer_action_executor.go new file mode 100644 index 0000000000..dfc28c32b3 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/lexer_action_executor.go @@ -0,0 +1,173 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import "golang.org/x/exp/slices" + +// Represents an executor for a sequence of lexer actions which traversed during +// the Matching operation of a lexer rule (token). +// +//

The executor tracks position information for position-dependent lexer actions +// efficiently, ensuring that actions appearing only at the end of the rule do +// not cause bloating of the {@link DFA} created for the lexer.

+ +type LexerActionExecutor struct { + lexerActions []LexerAction + cachedHash int +} + +func NewLexerActionExecutor(lexerActions []LexerAction) *LexerActionExecutor { + + if lexerActions == nil { + lexerActions = make([]LexerAction, 0) + } + + l := new(LexerActionExecutor) + + l.lexerActions = lexerActions + + // Caches the result of {@link //hashCode} since the hash code is an element + // of the performance-critical {@link ATNConfig//hashCode} operation. + l.cachedHash = murmurInit(0) + for _, a := range lexerActions { + l.cachedHash = murmurUpdate(l.cachedHash, a.Hash()) + } + l.cachedHash = murmurFinish(l.cachedHash, len(lexerActions)) + + return l +} + +// LexerActionExecutorappend creates a [LexerActionExecutor] which executes the actions for +// the input [LexerActionExecutor] followed by a specified +// [LexerAction]. +// TODO: This does not match the Java code +func LexerActionExecutorappend(lexerActionExecutor *LexerActionExecutor, lexerAction LexerAction) *LexerActionExecutor { + if lexerActionExecutor == nil { + return NewLexerActionExecutor([]LexerAction{lexerAction}) + } + + return NewLexerActionExecutor(append(lexerActionExecutor.lexerActions, lexerAction)) +} + +// fixOffsetBeforeMatch creates a [LexerActionExecutor] which encodes the current offset +// for position-dependent lexer actions. +// +// Normally, when the executor encounters lexer actions where +// [LexerAction.isPositionDependent] returns true, it calls +// [IntStream.Seek] on the input [CharStream] to set the input +// position to the end of the current token. This behavior provides +// for efficient [DFA] representation of lexer actions which appear at the end +// of a lexer rule, even when the lexer rule Matches a variable number of +// characters. +// +// Prior to traversing a Match transition in the [ATN], the current offset +// from the token start index is assigned to all position-dependent lexer +// actions which have not already been assigned a fixed offset. By storing +// the offsets relative to the token start index, the [DFA] representation of +// lexer actions which appear in the middle of tokens remains efficient due +// to sharing among tokens of the same Length, regardless of their absolute +// position in the input stream. +// +// If the current executor already has offsets assigned to all +// position-dependent lexer actions, the method returns this instance. +// +// The offset is assigned to all position-dependent +// lexer actions which do not already have offsets assigned. +// +// The func returns a [LexerActionExecutor] that stores input stream offsets +// for all position-dependent lexer actions. +func (l *LexerActionExecutor) fixOffsetBeforeMatch(offset int) *LexerActionExecutor { + var updatedLexerActions []LexerAction + for i := 0; i < len(l.lexerActions); i++ { + _, ok := l.lexerActions[i].(*LexerIndexedCustomAction) + if l.lexerActions[i].getIsPositionDependent() && !ok { + if updatedLexerActions == nil { + updatedLexerActions = make([]LexerAction, 0, len(l.lexerActions)) + updatedLexerActions = append(updatedLexerActions, l.lexerActions...) + } + updatedLexerActions[i] = NewLexerIndexedCustomAction(offset, l.lexerActions[i]) + } + } + if updatedLexerActions == nil { + return l + } + + return NewLexerActionExecutor(updatedLexerActions) +} + +// Execute the actions encapsulated by l executor within the context of a +// particular {@link Lexer}. +// +//

This method calls {@link IntStream//seek} to set the position of the +// {@code input} {@link CharStream} prior to calling +// {@link LexerAction//execute} on a position-dependent action. Before the +// method returns, the input position will be restored to the same position +// it was in when the method was invoked.

+// +// @param lexer The lexer instance. +// @param input The input stream which is the source for the current token. +// When l method is called, the current {@link IntStream//index} for +// {@code input} should be the start of the following token, i.e. 1 +// character past the end of the current token. +// @param startIndex The token start index. This value may be passed to +// {@link IntStream//seek} to set the {@code input} position to the beginning +// of the token. +// / +func (l *LexerActionExecutor) execute(lexer Lexer, input CharStream, startIndex int) { + requiresSeek := false + stopIndex := input.Index() + + defer func() { + if requiresSeek { + input.Seek(stopIndex) + } + }() + + for i := 0; i < len(l.lexerActions); i++ { + lexerAction := l.lexerActions[i] + if la, ok := lexerAction.(*LexerIndexedCustomAction); ok { + offset := la.offset + input.Seek(startIndex + offset) + lexerAction = la.lexerAction + requiresSeek = (startIndex + offset) != stopIndex + } else if lexerAction.getIsPositionDependent() { + input.Seek(stopIndex) + requiresSeek = false + } + lexerAction.execute(lexer) + } +} + +func (l *LexerActionExecutor) Hash() int { + if l == nil { + // TODO: Why is this here? l should not be nil + return 61 + } + + // TODO: This is created from the action itself when the struct is created - will this be an issue at some point? Java uses the runtime assign hashcode + return l.cachedHash +} + +func (l *LexerActionExecutor) Equals(other interface{}) bool { + if l == other { + return true + } + othert, ok := other.(*LexerActionExecutor) + if !ok { + return false + } + if othert == nil { + return false + } + if l.cachedHash != othert.cachedHash { + return false + } + if len(l.lexerActions) != len(othert.lexerActions) { + return false + } + return slices.EqualFunc(l.lexerActions, othert.lexerActions, func(i, j LexerAction) bool { + return i.Equals(j) + }) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/lexer_atn_simulator.go b/vendor/github.com/antlr4-go/antlr/v4/lexer_atn_simulator.go new file mode 100644 index 0000000000..fe938b0259 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/lexer_atn_simulator.go @@ -0,0 +1,677 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" + "strings" +) + +//goland:noinspection GoUnusedGlobalVariable +var ( + LexerATNSimulatorMinDFAEdge = 0 + LexerATNSimulatorMaxDFAEdge = 127 // forces unicode to stay in ATN + + LexerATNSimulatorMatchCalls = 0 +) + +type ILexerATNSimulator interface { + IATNSimulator + + reset() + Match(input CharStream, mode int) int + GetCharPositionInLine() int + GetLine() int + GetText(input CharStream) string + Consume(input CharStream) +} + +type LexerATNSimulator struct { + BaseATNSimulator + + recog Lexer + predictionMode int + mergeCache *JPCMap2 + startIndex int + Line int + CharPositionInLine int + mode int + prevAccept *SimState + MatchCalls int +} + +func NewLexerATNSimulator(recog Lexer, atn *ATN, decisionToDFA []*DFA, sharedContextCache *PredictionContextCache) *LexerATNSimulator { + l := &LexerATNSimulator{ + BaseATNSimulator: BaseATNSimulator{ + atn: atn, + sharedContextCache: sharedContextCache, + }, + } + + l.decisionToDFA = decisionToDFA + l.recog = recog + + // The current token's starting index into the character stream. + // Shared across DFA to ATN simulation in case the ATN fails and the + // DFA did not have a previous accept state. In l case, we use the + // ATN-generated exception object. + l.startIndex = -1 + + // line number 1..n within the input + l.Line = 1 + + // The index of the character relative to the beginning of the line + // 0..n-1 + l.CharPositionInLine = 0 + + l.mode = LexerDefaultMode + + // Used during DFA/ATN exec to record the most recent accept configuration + // info + l.prevAccept = NewSimState() + + return l +} + +func (l *LexerATNSimulator) copyState(simulator *LexerATNSimulator) { + l.CharPositionInLine = simulator.CharPositionInLine + l.Line = simulator.Line + l.mode = simulator.mode + l.startIndex = simulator.startIndex +} + +func (l *LexerATNSimulator) Match(input CharStream, mode int) int { + l.MatchCalls++ + l.mode = mode + mark := input.Mark() + + defer func() { + input.Release(mark) + }() + + l.startIndex = input.Index() + l.prevAccept.reset() + + dfa := l.decisionToDFA[mode] + + var s0 *DFAState + l.atn.stateMu.RLock() + s0 = dfa.getS0() + l.atn.stateMu.RUnlock() + + if s0 == nil { + return l.MatchATN(input) + } + + return l.execATN(input, s0) +} + +func (l *LexerATNSimulator) reset() { + l.prevAccept.reset() + l.startIndex = -1 + l.Line = 1 + l.CharPositionInLine = 0 + l.mode = LexerDefaultMode +} + +func (l *LexerATNSimulator) MatchATN(input CharStream) int { + startState := l.atn.modeToStartState[l.mode] + + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("MatchATN mode " + strconv.Itoa(l.mode) + " start: " + startState.String()) + } + oldMode := l.mode + s0Closure := l.computeStartState(input, startState) + suppressEdge := s0Closure.hasSemanticContext + s0Closure.hasSemanticContext = false + + next := l.addDFAState(s0Closure, suppressEdge) + + predict := l.execATN(input, next) + + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("DFA after MatchATN: " + l.decisionToDFA[oldMode].ToLexerString()) + } + return predict +} + +func (l *LexerATNSimulator) execATN(input CharStream, ds0 *DFAState) int { + + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("start state closure=" + ds0.configs.String()) + } + if ds0.isAcceptState { + // allow zero-Length tokens + l.captureSimState(l.prevAccept, input, ds0) + } + t := input.LA(1) + s := ds0 // s is current/from DFA state + + for { // while more work + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("execATN loop starting closure: " + s.configs.String()) + } + + // As we move src->trg, src->trg, we keep track of the previous trg to + // avoid looking up the DFA state again, which is expensive. + // If the previous target was already part of the DFA, we might + // be able to avoid doing a reach operation upon t. If s!=nil, + // it means that semantic predicates didn't prevent us from + // creating a DFA state. Once we know s!=nil, we check to see if + // the DFA state has an edge already for t. If so, we can just reuse + // it's configuration set there's no point in re-computing it. + // This is kind of like doing DFA simulation within the ATN + // simulation because DFA simulation is really just a way to avoid + // computing reach/closure sets. Technically, once we know that + // we have a previously added DFA state, we could jump over to + // the DFA simulator. But, that would mean popping back and forth + // a lot and making things more complicated algorithmically. + // This optimization makes a lot of sense for loops within DFA. + // A character will take us back to an existing DFA state + // that already has lots of edges out of it. e.g., .* in comments. + target := l.getExistingTargetState(s, t) + if target == nil { + target = l.computeTargetState(input, s, t) + // print("Computed:" + str(target)) + } + if target == ATNSimulatorError { + break + } + // If l is a consumable input element, make sure to consume before + // capturing the accept state so the input index, line, and char + // position accurately reflect the state of the interpreter at the + // end of the token. + if t != TokenEOF { + l.Consume(input) + } + if target.isAcceptState { + l.captureSimState(l.prevAccept, input, target) + if t == TokenEOF { + break + } + } + t = input.LA(1) + s = target // flip current DFA target becomes new src/from state + } + + return l.failOrAccept(l.prevAccept, input, s.configs, t) +} + +// Get an existing target state for an edge in the DFA. If the target state +// for the edge has not yet been computed or is otherwise not available, +// l method returns {@code nil}. +// +// @param s The current DFA state +// @param t The next input symbol +// @return The existing target DFA state for the given input symbol +// {@code t}, or {@code nil} if the target state for l edge is not +// already cached +func (l *LexerATNSimulator) getExistingTargetState(s *DFAState, t int) *DFAState { + if t < LexerATNSimulatorMinDFAEdge || t > LexerATNSimulatorMaxDFAEdge { + return nil + } + + l.atn.edgeMu.RLock() + defer l.atn.edgeMu.RUnlock() + if s.getEdges() == nil { + return nil + } + target := s.getIthEdge(t - LexerATNSimulatorMinDFAEdge) + if runtimeConfig.lexerATNSimulatorDebug && target != nil { + fmt.Println("reuse state " + strconv.Itoa(s.stateNumber) + " edge to " + strconv.Itoa(target.stateNumber)) + } + return target +} + +// computeTargetState computes a target state for an edge in the [DFA], and attempt to add the +// computed state and corresponding edge to the [DFA]. +// +// The func returns the computed target [DFA] state for the given input symbol t. +// If this does not lead to a valid [DFA] state, this method +// returns ATNSimulatorError. +func (l *LexerATNSimulator) computeTargetState(input CharStream, s *DFAState, t int) *DFAState { + reach := NewOrderedATNConfigSet() + + // if we don't find an existing DFA state + // Fill reach starting from closure, following t transitions + l.getReachableConfigSet(input, s.configs, reach, t) + + if len(reach.configs) == 0 { // we got nowhere on t from s + if !reach.hasSemanticContext { + // we got nowhere on t, don't panic out l knowledge it'd + // cause a fail-over from DFA later. + l.addDFAEdge(s, t, ATNSimulatorError, nil) + } + // stop when we can't Match any more char + return ATNSimulatorError + } + // Add an edge from s to target DFA found/created for reach + return l.addDFAEdge(s, t, nil, reach) +} + +func (l *LexerATNSimulator) failOrAccept(prevAccept *SimState, input CharStream, reach *ATNConfigSet, t int) int { + if l.prevAccept.dfaState != nil { + lexerActionExecutor := prevAccept.dfaState.lexerActionExecutor + l.accept(input, lexerActionExecutor, l.startIndex, prevAccept.index, prevAccept.line, prevAccept.column) + return prevAccept.dfaState.prediction + } + + // if no accept and EOF is first char, return EOF + if t == TokenEOF && input.Index() == l.startIndex { + return TokenEOF + } + + panic(NewLexerNoViableAltException(l.recog, input, l.startIndex, reach)) +} + +// getReachableConfigSet when given a starting configuration set, figures out all [ATN] configurations +// we can reach upon input t. +// +// Parameter reach is a return parameter. +func (l *LexerATNSimulator) getReachableConfigSet(input CharStream, closure *ATNConfigSet, reach *ATNConfigSet, t int) { + // l is used to Skip processing for configs which have a lower priority + // than a runtimeConfig that already reached an accept state for the same rule + SkipAlt := ATNInvalidAltNumber + + for _, cfg := range closure.configs { + currentAltReachedAcceptState := cfg.GetAlt() == SkipAlt + if currentAltReachedAcceptState && cfg.passedThroughNonGreedyDecision { + continue + } + + if runtimeConfig.lexerATNSimulatorDebug { + + fmt.Printf("testing %s at %s\n", l.GetTokenName(t), cfg.String()) + } + + for _, trans := range cfg.GetState().GetTransitions() { + target := l.getReachableTarget(trans, t) + if target != nil { + lexerActionExecutor := cfg.lexerActionExecutor + if lexerActionExecutor != nil { + lexerActionExecutor = lexerActionExecutor.fixOffsetBeforeMatch(input.Index() - l.startIndex) + } + treatEOFAsEpsilon := t == TokenEOF + config := NewLexerATNConfig3(cfg, target, lexerActionExecutor) + if l.closure(input, config, reach, + currentAltReachedAcceptState, true, treatEOFAsEpsilon) { + // any remaining configs for l alt have a lower priority + // than the one that just reached an accept state. + SkipAlt = cfg.GetAlt() + } + } + } + } +} + +func (l *LexerATNSimulator) accept(input CharStream, lexerActionExecutor *LexerActionExecutor, startIndex, index, line, charPos int) { + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Printf("ACTION %v\n", lexerActionExecutor) + } + // seek to after last char in token + input.Seek(index) + l.Line = line + l.CharPositionInLine = charPos + if lexerActionExecutor != nil && l.recog != nil { + lexerActionExecutor.execute(l.recog, input, startIndex) + } +} + +func (l *LexerATNSimulator) getReachableTarget(trans Transition, t int) ATNState { + if trans.Matches(t, 0, LexerMaxCharValue) { + return trans.getTarget() + } + + return nil +} + +func (l *LexerATNSimulator) computeStartState(input CharStream, p ATNState) *ATNConfigSet { + configs := NewOrderedATNConfigSet() + for i := 0; i < len(p.GetTransitions()); i++ { + target := p.GetTransitions()[i].getTarget() + cfg := NewLexerATNConfig6(target, i+1, BasePredictionContextEMPTY) + l.closure(input, cfg, configs, false, false, false) + } + + return configs +} + +// closure since the alternatives within any lexer decision are ordered by +// preference, this method stops pursuing the closure as soon as an accept +// state is reached. After the first accept state is reached by depth-first +// search from runtimeConfig, all other (potentially reachable) states for +// this rule would have a lower priority. +// +// The func returns true if an accept state is reached. +func (l *LexerATNSimulator) closure(input CharStream, config *ATNConfig, configs *ATNConfigSet, + currentAltReachedAcceptState, speculative, treatEOFAsEpsilon bool) bool { + + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("closure(" + config.String() + ")") + } + + _, ok := config.state.(*RuleStopState) + if ok { + + if runtimeConfig.lexerATNSimulatorDebug { + if l.recog != nil { + fmt.Printf("closure at %s rule stop %s\n", l.recog.GetRuleNames()[config.state.GetRuleIndex()], config) + } else { + fmt.Printf("closure at rule stop %s\n", config) + } + } + + if config.context == nil || config.context.hasEmptyPath() { + if config.context == nil || config.context.isEmpty() { + configs.Add(config, nil) + return true + } + + configs.Add(NewLexerATNConfig2(config, config.state, BasePredictionContextEMPTY), nil) + currentAltReachedAcceptState = true + } + if config.context != nil && !config.context.isEmpty() { + for i := 0; i < config.context.length(); i++ { + if config.context.getReturnState(i) != BasePredictionContextEmptyReturnState { + newContext := config.context.GetParent(i) // "pop" return state + returnState := l.atn.states[config.context.getReturnState(i)] + cfg := NewLexerATNConfig2(config, returnState, newContext) + currentAltReachedAcceptState = l.closure(input, cfg, configs, currentAltReachedAcceptState, speculative, treatEOFAsEpsilon) + } + } + } + return currentAltReachedAcceptState + } + // optimization + if !config.state.GetEpsilonOnlyTransitions() { + if !currentAltReachedAcceptState || !config.passedThroughNonGreedyDecision { + configs.Add(config, nil) + } + } + for j := 0; j < len(config.state.GetTransitions()); j++ { + trans := config.state.GetTransitions()[j] + cfg := l.getEpsilonTarget(input, config, trans, configs, speculative, treatEOFAsEpsilon) + if cfg != nil { + currentAltReachedAcceptState = l.closure(input, cfg, configs, + currentAltReachedAcceptState, speculative, treatEOFAsEpsilon) + } + } + return currentAltReachedAcceptState +} + +// side-effect: can alter configs.hasSemanticContext +func (l *LexerATNSimulator) getEpsilonTarget(input CharStream, config *ATNConfig, trans Transition, + configs *ATNConfigSet, speculative, treatEOFAsEpsilon bool) *ATNConfig { + + var cfg *ATNConfig + + if trans.getSerializationType() == TransitionRULE { + + rt := trans.(*RuleTransition) + newContext := SingletonBasePredictionContextCreate(config.context, rt.followState.GetStateNumber()) + cfg = NewLexerATNConfig2(config, trans.getTarget(), newContext) + + } else if trans.getSerializationType() == TransitionPRECEDENCE { + panic("Precedence predicates are not supported in lexers.") + } else if trans.getSerializationType() == TransitionPREDICATE { + // Track traversing semantic predicates. If we traverse, + // we cannot add a DFA state for l "reach" computation + // because the DFA would not test the predicate again in the + // future. Rather than creating collections of semantic predicates + // like v3 and testing them on prediction, v4 will test them on the + // fly all the time using the ATN not the DFA. This is slower but + // semantically it's not used that often. One of the key elements to + // l predicate mechanism is not adding DFA states that see + // predicates immediately afterwards in the ATN. For example, + + // a : ID {p1}? | ID {p2}? + + // should create the start state for rule 'a' (to save start state + // competition), but should not create target of ID state. The + // collection of ATN states the following ID references includes + // states reached by traversing predicates. Since l is when we + // test them, we cannot cash the DFA state target of ID. + + pt := trans.(*PredicateTransition) + + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("EVAL rule " + strconv.Itoa(trans.(*PredicateTransition).ruleIndex) + ":" + strconv.Itoa(pt.predIndex)) + } + configs.hasSemanticContext = true + if l.evaluatePredicate(input, pt.ruleIndex, pt.predIndex, speculative) { + cfg = NewLexerATNConfig4(config, trans.getTarget()) + } + } else if trans.getSerializationType() == TransitionACTION { + if config.context == nil || config.context.hasEmptyPath() { + // execute actions anywhere in the start rule for a token. + // + // TODO: if the entry rule is invoked recursively, some + // actions may be executed during the recursive call. The + // problem can appear when hasEmptyPath() is true but + // isEmpty() is false. In this case, the config needs to be + // split into two contexts - one with just the empty path + // and another with everything but the empty path. + // Unfortunately, the current algorithm does not allow + // getEpsilonTarget to return two configurations, so + // additional modifications are needed before we can support + // the split operation. + lexerActionExecutor := LexerActionExecutorappend(config.lexerActionExecutor, l.atn.lexerActions[trans.(*ActionTransition).actionIndex]) + cfg = NewLexerATNConfig3(config, trans.getTarget(), lexerActionExecutor) + } else { + // ignore actions in referenced rules + cfg = NewLexerATNConfig4(config, trans.getTarget()) + } + } else if trans.getSerializationType() == TransitionEPSILON { + cfg = NewLexerATNConfig4(config, trans.getTarget()) + } else if trans.getSerializationType() == TransitionATOM || + trans.getSerializationType() == TransitionRANGE || + trans.getSerializationType() == TransitionSET { + if treatEOFAsEpsilon { + if trans.Matches(TokenEOF, 0, LexerMaxCharValue) { + cfg = NewLexerATNConfig4(config, trans.getTarget()) + } + } + } + return cfg +} + +// evaluatePredicate eEvaluates a predicate specified in the lexer. +// +// If speculative is true, this method was called before +// [consume] for the Matched character. This method should call +// [consume] before evaluating the predicate to ensure position +// sensitive values, including [GetText], [GetLine], +// and [GetColumn], properly reflect the current +// lexer state. This method should restore input and the simulator +// to the original state before returning, i.e. undo the actions made by the +// call to [Consume]. +// +// The func returns true if the specified predicate evaluates to true. +func (l *LexerATNSimulator) evaluatePredicate(input CharStream, ruleIndex, predIndex int, speculative bool) bool { + // assume true if no recognizer was provided + if l.recog == nil { + return true + } + if !speculative { + return l.recog.Sempred(nil, ruleIndex, predIndex) + } + savedcolumn := l.CharPositionInLine + savedLine := l.Line + index := input.Index() + marker := input.Mark() + + defer func() { + l.CharPositionInLine = savedcolumn + l.Line = savedLine + input.Seek(index) + input.Release(marker) + }() + + l.Consume(input) + return l.recog.Sempred(nil, ruleIndex, predIndex) +} + +func (l *LexerATNSimulator) captureSimState(settings *SimState, input CharStream, dfaState *DFAState) { + settings.index = input.Index() + settings.line = l.Line + settings.column = l.CharPositionInLine + settings.dfaState = dfaState +} + +func (l *LexerATNSimulator) addDFAEdge(from *DFAState, tk int, to *DFAState, cfgs *ATNConfigSet) *DFAState { + if to == nil && cfgs != nil { + // leading to l call, ATNConfigSet.hasSemanticContext is used as a + // marker indicating dynamic predicate evaluation makes l edge + // dependent on the specific input sequence, so the static edge in the + // DFA should be omitted. The target DFAState is still created since + // execATN has the ability to reSynchronize with the DFA state cache + // following the predicate evaluation step. + // + // TJP notes: next time through the DFA, we see a pred again and eval. + // If that gets us to a previously created (but dangling) DFA + // state, we can continue in pure DFA mode from there. + // + suppressEdge := cfgs.hasSemanticContext + cfgs.hasSemanticContext = false + to = l.addDFAState(cfgs, true) + + if suppressEdge { + return to + } + } + // add the edge + if tk < LexerATNSimulatorMinDFAEdge || tk > LexerATNSimulatorMaxDFAEdge { + // Only track edges within the DFA bounds + return to + } + if runtimeConfig.lexerATNSimulatorDebug { + fmt.Println("EDGE " + from.String() + " -> " + to.String() + " upon " + strconv.Itoa(tk)) + } + l.atn.edgeMu.Lock() + defer l.atn.edgeMu.Unlock() + if from.getEdges() == nil { + // make room for tokens 1..n and -1 masquerading as index 0 + from.setEdges(make([]*DFAState, LexerATNSimulatorMaxDFAEdge-LexerATNSimulatorMinDFAEdge+1)) + } + from.setIthEdge(tk-LexerATNSimulatorMinDFAEdge, to) // connect + + return to +} + +// Add a NewDFA state if there isn't one with l set of +// configurations already. This method also detects the first +// configuration containing an ATN rule stop state. Later, when +// traversing the DFA, we will know which rule to accept. +func (l *LexerATNSimulator) addDFAState(configs *ATNConfigSet, suppressEdge bool) *DFAState { + + proposed := NewDFAState(-1, configs) + var firstConfigWithRuleStopState *ATNConfig + + for _, cfg := range configs.configs { + _, ok := cfg.GetState().(*RuleStopState) + + if ok { + firstConfigWithRuleStopState = cfg + break + } + } + if firstConfigWithRuleStopState != nil { + proposed.isAcceptState = true + proposed.lexerActionExecutor = firstConfigWithRuleStopState.lexerActionExecutor + proposed.setPrediction(l.atn.ruleToTokenType[firstConfigWithRuleStopState.GetState().GetRuleIndex()]) + } + dfa := l.decisionToDFA[l.mode] + + l.atn.stateMu.Lock() + defer l.atn.stateMu.Unlock() + existing, present := dfa.Get(proposed) + if present { + + // This state was already present, so just return it. + // + proposed = existing + } else { + + // We need to add the new state + // + proposed.stateNumber = dfa.Len() + configs.readOnly = true + configs.configLookup = nil // Not needed now + proposed.configs = configs + dfa.Put(proposed) + } + if !suppressEdge { + dfa.setS0(proposed) + } + return proposed +} + +func (l *LexerATNSimulator) getDFA(mode int) *DFA { + return l.decisionToDFA[mode] +} + +// GetText returns the text [Match]ed so far for the current token. +func (l *LexerATNSimulator) GetText(input CharStream) string { + // index is first lookahead char, don't include. + return input.GetTextFromInterval(NewInterval(l.startIndex, input.Index()-1)) +} + +func (l *LexerATNSimulator) Consume(input CharStream) { + curChar := input.LA(1) + if curChar == int('\n') { + l.Line++ + l.CharPositionInLine = 0 + } else { + l.CharPositionInLine++ + } + input.Consume() +} + +func (l *LexerATNSimulator) GetCharPositionInLine() int { + return l.CharPositionInLine +} + +func (l *LexerATNSimulator) GetLine() int { + return l.Line +} + +func (l *LexerATNSimulator) GetTokenName(tt int) string { + if tt == -1 { + return "EOF" + } + + var sb strings.Builder + sb.Grow(6) + sb.WriteByte('\'') + sb.WriteRune(rune(tt)) + sb.WriteByte('\'') + + return sb.String() +} + +func resetSimState(sim *SimState) { + sim.index = -1 + sim.line = 0 + sim.column = -1 + sim.dfaState = nil +} + +type SimState struct { + index int + line int + column int + dfaState *DFAState +} + +func NewSimState() *SimState { + s := new(SimState) + resetSimState(s) + return s +} + +func (s *SimState) reset() { + resetSimState(s) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/ll1_analyzer.go b/vendor/github.com/antlr4-go/antlr/v4/ll1_analyzer.go new file mode 100644 index 0000000000..4955ac876f --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/ll1_analyzer.go @@ -0,0 +1,218 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +type LL1Analyzer struct { + atn *ATN +} + +func NewLL1Analyzer(atn *ATN) *LL1Analyzer { + la := new(LL1Analyzer) + la.atn = atn + return la +} + +const ( + // LL1AnalyzerHitPred is a special value added to the lookahead sets to indicate that we hit + // a predicate during analysis if + // + // seeThruPreds==false + LL1AnalyzerHitPred = TokenInvalidType +) + +// * +// Calculates the SLL(1) expected lookahead set for each outgoing transition +// of an {@link ATNState}. The returned array has one element for each +// outgoing transition in {@code s}. If the closure from transition +// i leads to a semantic predicate before Matching a symbol, the +// element at index i of the result will be {@code nil}. +// +// @param s the ATN state +// @return the expected symbols for each outgoing transition of {@code s}. +func (la *LL1Analyzer) getDecisionLookahead(s ATNState) []*IntervalSet { + if s == nil { + return nil + } + count := len(s.GetTransitions()) + look := make([]*IntervalSet, count) + for alt := 0; alt < count; alt++ { + + look[alt] = NewIntervalSet() + lookBusy := NewJStore[*ATNConfig, Comparator[*ATNConfig]](aConfEqInst, ClosureBusyCollection, "LL1Analyzer.getDecisionLookahead for lookBusy") + la.look1(s.GetTransitions()[alt].getTarget(), nil, BasePredictionContextEMPTY, look[alt], lookBusy, NewBitSet(), false, false) + + // Wipe out lookahead for la alternative if we found nothing, + // or we had a predicate when we !seeThruPreds + if look[alt].length() == 0 || look[alt].contains(LL1AnalyzerHitPred) { + look[alt] = nil + } + } + return look +} + +// Look computes the set of tokens that can follow s in the [ATN] in the +// specified ctx. +// +// If ctx is nil and the end of the rule containing +// s is reached, [EPSILON] is added to the result set. +// +// If ctx is not nil and the end of the outermost rule is +// reached, [EOF] is added to the result set. +// +// Parameter s the ATN state, and stopState is the ATN state to stop at. This can be a +// [BlockEndState] to detect epsilon paths through a closure. +// +// Parameter ctx is the complete parser context, or nil if the context +// should be ignored +// +// The func returns the set of tokens that can follow s in the [ATN] in the +// specified ctx. +func (la *LL1Analyzer) Look(s, stopState ATNState, ctx RuleContext) *IntervalSet { + r := NewIntervalSet() + var lookContext *PredictionContext + if ctx != nil { + lookContext = predictionContextFromRuleContext(s.GetATN(), ctx) + } + la.look1(s, stopState, lookContext, r, NewJStore[*ATNConfig, Comparator[*ATNConfig]](aConfEqInst, ClosureBusyCollection, "LL1Analyzer.Look for la.look1()"), + NewBitSet(), true, true) + return r +} + +//* +// Compute set of tokens that can follow {@code s} in the ATN in the +// specified {@code ctx}. +// +//

If {@code ctx} is {@code nil} and {@code stopState} or the end of the +// rule containing {@code s} is reached, {@link Token//EPSILON} is added to +// the result set. If {@code ctx} is not {@code nil} and {@code addEOF} is +// {@code true} and {@code stopState} or the end of the outermost rule is +// reached, {@link Token//EOF} is added to the result set.

+// +// @param s the ATN state. +// @param stopState the ATN state to stop at. This can be a +// {@link BlockEndState} to detect epsilon paths through a closure. +// @param ctx The outer context, or {@code nil} if the outer context should +// not be used. +// @param look The result lookahead set. +// @param lookBusy A set used for preventing epsilon closures in the ATN +// from causing a stack overflow. Outside code should pass +// {@code NewSet} for la argument. +// @param calledRuleStack A set used for preventing left recursion in the +// ATN from causing a stack overflow. Outside code should pass +// {@code NewBitSet()} for la argument. +// @param seeThruPreds {@code true} to true semantic predicates as +// implicitly {@code true} and "see through them", otherwise {@code false} +// to treat semantic predicates as opaque and add {@link //HitPred} to the +// result if one is encountered. +// @param addEOF Add {@link Token//EOF} to the result if the end of the +// outermost context is reached. This parameter has no effect if {@code ctx} +// is {@code nil}. + +func (la *LL1Analyzer) look2(_, stopState ATNState, ctx *PredictionContext, look *IntervalSet, lookBusy *JStore[*ATNConfig, Comparator[*ATNConfig]], + calledRuleStack *BitSet, seeThruPreds, addEOF bool, i int) { + + returnState := la.atn.states[ctx.getReturnState(i)] + la.look1(returnState, stopState, ctx.GetParent(i), look, lookBusy, calledRuleStack, seeThruPreds, addEOF) + +} + +func (la *LL1Analyzer) look1(s, stopState ATNState, ctx *PredictionContext, look *IntervalSet, lookBusy *JStore[*ATNConfig, Comparator[*ATNConfig]], calledRuleStack *BitSet, seeThruPreds, addEOF bool) { + + c := NewATNConfig6(s, 0, ctx) + + if lookBusy.Contains(c) { + return + } + + _, present := lookBusy.Put(c) + if present { + return + + } + if s == stopState { + if ctx == nil { + look.addOne(TokenEpsilon) + return + } else if ctx.isEmpty() && addEOF { + look.addOne(TokenEOF) + return + } + } + + _, ok := s.(*RuleStopState) + + if ok { + if ctx == nil { + look.addOne(TokenEpsilon) + return + } else if ctx.isEmpty() && addEOF { + look.addOne(TokenEOF) + return + } + + if ctx.pcType != PredictionContextEmpty { + removed := calledRuleStack.contains(s.GetRuleIndex()) + defer func() { + if removed { + calledRuleStack.add(s.GetRuleIndex()) + } + }() + calledRuleStack.remove(s.GetRuleIndex()) + // run thru all possible stack tops in ctx + for i := 0; i < ctx.length(); i++ { + returnState := la.atn.states[ctx.getReturnState(i)] + la.look2(returnState, stopState, ctx, look, lookBusy, calledRuleStack, seeThruPreds, addEOF, i) + } + return + } + } + + n := len(s.GetTransitions()) + + for i := 0; i < n; i++ { + t := s.GetTransitions()[i] + + if t1, ok := t.(*RuleTransition); ok { + if calledRuleStack.contains(t1.getTarget().GetRuleIndex()) { + continue + } + + newContext := SingletonBasePredictionContextCreate(ctx, t1.followState.GetStateNumber()) + la.look3(stopState, newContext, look, lookBusy, calledRuleStack, seeThruPreds, addEOF, t1) + } else if t2, ok := t.(AbstractPredicateTransition); ok { + if seeThruPreds { + la.look1(t2.getTarget(), stopState, ctx, look, lookBusy, calledRuleStack, seeThruPreds, addEOF) + } else { + look.addOne(LL1AnalyzerHitPred) + } + } else if t.getIsEpsilon() { + la.look1(t.getTarget(), stopState, ctx, look, lookBusy, calledRuleStack, seeThruPreds, addEOF) + } else if _, ok := t.(*WildcardTransition); ok { + look.addRange(TokenMinUserTokenType, la.atn.maxTokenType) + } else { + set := t.getLabel() + if set != nil { + if _, ok := t.(*NotSetTransition); ok { + set = set.complement(TokenMinUserTokenType, la.atn.maxTokenType) + } + look.addSet(set) + } + } + } +} + +func (la *LL1Analyzer) look3(stopState ATNState, ctx *PredictionContext, look *IntervalSet, lookBusy *JStore[*ATNConfig, Comparator[*ATNConfig]], + calledRuleStack *BitSet, seeThruPreds, addEOF bool, t1 *RuleTransition) { + + newContext := SingletonBasePredictionContextCreate(ctx, t1.followState.GetStateNumber()) + + defer func() { + calledRuleStack.remove(t1.getTarget().GetRuleIndex()) + }() + + calledRuleStack.add(t1.getTarget().GetRuleIndex()) + la.look1(t1.getTarget(), stopState, newContext, look, lookBusy, calledRuleStack, seeThruPreds, addEOF) + +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/nostatistics.go b/vendor/github.com/antlr4-go/antlr/v4/nostatistics.go new file mode 100644 index 0000000000..923c7b52c4 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/nostatistics.go @@ -0,0 +1,47 @@ +//go:build !antlr.stats + +package antlr + +// This file is compiled when the build configuration antlr.stats is not enabled. +// which then allows the compiler to optimize out all the code that is not used. +const collectStats = false + +// goRunStats is a dummy struct used when build configuration antlr.stats is not enabled. +type goRunStats struct { +} + +var Statistics = &goRunStats{} + +func (s *goRunStats) AddJStatRec(_ *JStatRec) { + // Do nothing - compiler will optimize this out (hopefully) +} + +func (s *goRunStats) CollectionAnomalies() { + // Do nothing - compiler will optimize this out (hopefully) +} + +func (s *goRunStats) Reset() { + // Do nothing - compiler will optimize this out (hopefully) +} + +func (s *goRunStats) Report(dir string, prefix string) error { + // Do nothing - compiler will optimize this out (hopefully) + return nil +} + +func (s *goRunStats) Analyze() { + // Do nothing - compiler will optimize this out (hopefully) +} + +type statsOption func(*goRunStats) error + +func (s *goRunStats) Configure(options ...statsOption) error { + // Do nothing - compiler will optimize this out (hopefully) + return nil +} + +func WithTopN(topN int) statsOption { + return func(s *goRunStats) error { + return nil + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/parser.go b/vendor/github.com/antlr4-go/antlr/v4/parser.go new file mode 100644 index 0000000000..fb57ac15db --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/parser.go @@ -0,0 +1,700 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" +) + +type Parser interface { + Recognizer + + GetInterpreter() *ParserATNSimulator + + GetTokenStream() TokenStream + GetTokenFactory() TokenFactory + GetParserRuleContext() ParserRuleContext + SetParserRuleContext(ParserRuleContext) + Consume() Token + GetParseListeners() []ParseTreeListener + + GetErrorHandler() ErrorStrategy + SetErrorHandler(ErrorStrategy) + GetInputStream() IntStream + GetCurrentToken() Token + GetExpectedTokens() *IntervalSet + NotifyErrorListeners(string, Token, RecognitionException) + IsExpectedToken(int) bool + GetPrecedence() int + GetRuleInvocationStack(ParserRuleContext) []string +} + +type BaseParser struct { + *BaseRecognizer + + Interpreter *ParserATNSimulator + BuildParseTrees bool + + input TokenStream + errHandler ErrorStrategy + precedenceStack IntStack + ctx ParserRuleContext + + tracer *TraceListener + parseListeners []ParseTreeListener + _SyntaxErrors int +} + +// NewBaseParser contains all the parsing support code to embed in parsers. Essentially most of it is error +// recovery stuff. +// +//goland:noinspection GoUnusedExportedFunction +func NewBaseParser(input TokenStream) *BaseParser { + + p := new(BaseParser) + + p.BaseRecognizer = NewBaseRecognizer() + + // The input stream. + p.input = nil + + // The error handling strategy for the parser. The default value is a new + // instance of {@link DefaultErrorStrategy}. + p.errHandler = NewDefaultErrorStrategy() + p.precedenceStack = make([]int, 0) + p.precedenceStack.Push(0) + + // The ParserRuleContext object for the currently executing rule. + // p.is always non-nil during the parsing process. + p.ctx = nil + + // Specifies whether the parser should construct a parse tree during + // the parsing process. The default value is {@code true}. + p.BuildParseTrees = true + + // When setTrace(true) is called, a reference to the + // TraceListener is stored here, so it can be easily removed in a + // later call to setTrace(false). The listener itself is + // implemented as a parser listener so p.field is not directly used by + // other parser methods. + p.tracer = nil + + // The list of ParseTreeListener listeners registered to receive + // events during the parse. + p.parseListeners = nil + + // The number of syntax errors Reported during parsing. p.value is + // incremented each time NotifyErrorListeners is called. + p._SyntaxErrors = 0 + p.SetInputStream(input) + + return p +} + +// This field maps from the serialized ATN string to the deserialized [ATN] with +// bypass alternatives. +// +// [ATNDeserializationOptions.isGenerateRuleBypassTransitions] +// +//goland:noinspection GoUnusedGlobalVariable +var bypassAltsAtnCache = make(map[string]int) + +// reset the parser's state// +func (p *BaseParser) reset() { + if p.input != nil { + p.input.Seek(0) + } + p.errHandler.reset(p) + p.ctx = nil + p._SyntaxErrors = 0 + p.SetTrace(nil) + p.precedenceStack = make([]int, 0) + p.precedenceStack.Push(0) + if p.Interpreter != nil { + p.Interpreter.reset() + } +} + +func (p *BaseParser) GetErrorHandler() ErrorStrategy { + return p.errHandler +} + +func (p *BaseParser) SetErrorHandler(e ErrorStrategy) { + p.errHandler = e +} + +// Match current input symbol against {@code ttype}. If the symbol type +// Matches, {@link ANTLRErrorStrategy//ReportMatch} and {@link //consume} are +// called to complete the Match process. +// +//

If the symbol type does not Match, +// {@link ANTLRErrorStrategy//recoverInline} is called on the current error +// strategy to attempt recovery. If {@link //getBuildParseTree} is +// {@code true} and the token index of the symbol returned by +// {@link ANTLRErrorStrategy//recoverInline} is -1, the symbol is added to +// the parse tree by calling {@link ParserRuleContext//addErrorNode}.

+// +// @param ttype the token type to Match +// @return the Matched symbol +// @panics RecognitionException if the current input symbol did not Match +// {@code ttype} and the error strategy could not recover from the +// mismatched symbol + +func (p *BaseParser) Match(ttype int) Token { + + t := p.GetCurrentToken() + + if t.GetTokenType() == ttype { + p.errHandler.ReportMatch(p) + p.Consume() + } else { + t = p.errHandler.RecoverInline(p) + if p.HasError() { + return nil + } + if p.BuildParseTrees && t.GetTokenIndex() == -1 { + + // we must have conjured up a new token during single token + // insertion if it's not the current symbol + p.ctx.AddErrorNode(t) + } + } + + return t +} + +// Match current input symbol as a wildcard. If the symbol type Matches +// (i.e. has a value greater than 0), {@link ANTLRErrorStrategy//ReportMatch} +// and {@link //consume} are called to complete the Match process. +// +//

If the symbol type does not Match, +// {@link ANTLRErrorStrategy//recoverInline} is called on the current error +// strategy to attempt recovery. If {@link //getBuildParseTree} is +// {@code true} and the token index of the symbol returned by +// {@link ANTLRErrorStrategy//recoverInline} is -1, the symbol is added to +// the parse tree by calling {@link ParserRuleContext//addErrorNode}.

+// +// @return the Matched symbol +// @panics RecognitionException if the current input symbol did not Match +// a wildcard and the error strategy could not recover from the mismatched +// symbol + +func (p *BaseParser) MatchWildcard() Token { + t := p.GetCurrentToken() + if t.GetTokenType() > 0 { + p.errHandler.ReportMatch(p) + p.Consume() + } else { + t = p.errHandler.RecoverInline(p) + if p.BuildParseTrees && t.GetTokenIndex() == -1 { + // we must have conjured up a new token during single token + // insertion if it's not the current symbol + p.ctx.AddErrorNode(t) + } + } + return t +} + +func (p *BaseParser) GetParserRuleContext() ParserRuleContext { + return p.ctx +} + +func (p *BaseParser) SetParserRuleContext(v ParserRuleContext) { + p.ctx = v +} + +func (p *BaseParser) GetParseListeners() []ParseTreeListener { + if p.parseListeners == nil { + return make([]ParseTreeListener, 0) + } + return p.parseListeners +} + +// AddParseListener registers listener to receive events during the parsing process. +// +// To support output-preserving grammar transformations (including but not +// limited to left-recursion removal, automated left-factoring, and +// optimized code generation), calls to listener methods during the parse +// may differ substantially from calls made by +// [ParseTreeWalker.DEFAULT] used after the parse is complete. In +// particular, rule entry and exit events may occur in a different order +// during the parse than after the parser. In addition, calls to certain +// rule entry methods may be omitted. +// +// With the following specific exceptions, calls to listener events are +// deterministic, i.e. for identical input the calls to listener +// methods will be the same. +// +// - Alterations to the grammar used to generate code may change the +// behavior of the listener calls. +// - Alterations to the command line options passed to ANTLR 4 when +// generating the parser may change the behavior of the listener calls. +// - Changing the version of the ANTLR Tool used to generate the parser +// may change the behavior of the listener calls. +func (p *BaseParser) AddParseListener(listener ParseTreeListener) { + if listener == nil { + panic("listener") + } + if p.parseListeners == nil { + p.parseListeners = make([]ParseTreeListener, 0) + } + p.parseListeners = append(p.parseListeners, listener) +} + +// RemoveParseListener removes listener from the list of parse listeners. +// +// If listener is nil or has not been added as a parse +// listener, this func does nothing. +func (p *BaseParser) RemoveParseListener(listener ParseTreeListener) { + + if p.parseListeners != nil { + + idx := -1 + for i, v := range p.parseListeners { + if v == listener { + idx = i + break + } + } + + if idx == -1 { + return + } + + // remove the listener from the slice + p.parseListeners = append(p.parseListeners[0:idx], p.parseListeners[idx+1:]...) + + if len(p.parseListeners) == 0 { + p.parseListeners = nil + } + } +} + +// Remove all parse listeners. +func (p *BaseParser) removeParseListeners() { + p.parseListeners = nil +} + +// TriggerEnterRuleEvent notifies all parse listeners of an enter rule event. +func (p *BaseParser) TriggerEnterRuleEvent() { + if p.parseListeners != nil { + ctx := p.ctx + for _, listener := range p.parseListeners { + listener.EnterEveryRule(ctx) + ctx.EnterRule(listener) + } + } +} + +// TriggerExitRuleEvent notifies any parse listeners of an exit rule event. +func (p *BaseParser) TriggerExitRuleEvent() { + if p.parseListeners != nil { + // reverse order walk of listeners + ctx := p.ctx + l := len(p.parseListeners) - 1 + + for i := range p.parseListeners { + listener := p.parseListeners[l-i] + ctx.ExitRule(listener) + listener.ExitEveryRule(ctx) + } + } +} + +func (p *BaseParser) GetInterpreter() *ParserATNSimulator { + return p.Interpreter +} + +func (p *BaseParser) GetATN() *ATN { + return p.Interpreter.atn +} + +func (p *BaseParser) GetTokenFactory() TokenFactory { + return p.input.GetTokenSource().GetTokenFactory() +} + +// setTokenFactory is used to tell our token source and error strategy about a new way to create tokens. +func (p *BaseParser) setTokenFactory(factory TokenFactory) { + p.input.GetTokenSource().setTokenFactory(factory) +} + +// GetATNWithBypassAlts - the ATN with bypass alternatives is expensive to create, so we create it +// lazily. +func (p *BaseParser) GetATNWithBypassAlts() { + + // TODO - Implement this? + panic("Not implemented!") + + // serializedAtn := p.getSerializedATN() + // if (serializedAtn == nil) { + // panic("The current parser does not support an ATN with bypass alternatives.") + // } + // result := p.bypassAltsAtnCache[serializedAtn] + // if (result == nil) { + // deserializationOptions := NewATNDeserializationOptions(nil) + // deserializationOptions.generateRuleBypassTransitions = true + // result = NewATNDeserializer(deserializationOptions).deserialize(serializedAtn) + // p.bypassAltsAtnCache[serializedAtn] = result + // } + // return result +} + +// The preferred method of getting a tree pattern. For example, here's a +// sample use: +// +// 
+// ParseTree t = parser.expr()
+// ParseTreePattern p = parser.compileParseTreePattern("<ID>+0",
+// MyParser.RULE_expr)
+// ParseTreeMatch m = p.Match(t)
+// String id = m.Get("ID")
+//
+ +//goland:noinspection GoUnusedParameter +func (p *BaseParser) compileParseTreePattern(pattern, patternRuleIndex, lexer Lexer) { + + panic("NewParseTreePatternMatcher not implemented!") + // + // if (lexer == nil) { + // if (p.GetTokenStream() != nil) { + // tokenSource := p.GetTokenStream().GetTokenSource() + // if _, ok := tokenSource.(ILexer); ok { + // lexer = tokenSource + // } + // } + // } + // if (lexer == nil) { + // panic("Parser can't discover a lexer to use") + // } + + // m := NewParseTreePatternMatcher(lexer, p) + // return m.compile(pattern, patternRuleIndex) +} + +func (p *BaseParser) GetInputStream() IntStream { + return p.GetTokenStream() +} + +func (p *BaseParser) SetInputStream(input TokenStream) { + p.SetTokenStream(input) +} + +func (p *BaseParser) GetTokenStream() TokenStream { + return p.input +} + +// SetTokenStream installs input as the token stream and resets the parser. +func (p *BaseParser) SetTokenStream(input TokenStream) { + p.input = nil + p.reset() + p.input = input +} + +// GetCurrentToken returns the current token at LT(1). +// +// [Match] needs to return the current input symbol, which gets put +// into the label for the associated token ref e.g., x=ID. +func (p *BaseParser) GetCurrentToken() Token { + return p.input.LT(1) +} + +func (p *BaseParser) NotifyErrorListeners(msg string, offendingToken Token, err RecognitionException) { + if offendingToken == nil { + offendingToken = p.GetCurrentToken() + } + p._SyntaxErrors++ + line := offendingToken.GetLine() + column := offendingToken.GetColumn() + listener := p.GetErrorListenerDispatch() + listener.SyntaxError(p, offendingToken, line, column, msg, err) +} + +func (p *BaseParser) Consume() Token { + o := p.GetCurrentToken() + if o.GetTokenType() != TokenEOF { + p.GetInputStream().Consume() + } + hasListener := p.parseListeners != nil && len(p.parseListeners) > 0 + if p.BuildParseTrees || hasListener { + if p.errHandler.InErrorRecoveryMode(p) { + node := p.ctx.AddErrorNode(o) + if p.parseListeners != nil { + for _, l := range p.parseListeners { + l.VisitErrorNode(node) + } + } + + } else { + node := p.ctx.AddTokenNode(o) + if p.parseListeners != nil { + for _, l := range p.parseListeners { + l.VisitTerminal(node) + } + } + } + // node.invokingState = p.state + } + + return o +} + +func (p *BaseParser) addContextToParseTree() { + // add current context to parent if we have a parent + if p.ctx.GetParent() != nil { + p.ctx.GetParent().(ParserRuleContext).AddChild(p.ctx) + } +} + +func (p *BaseParser) EnterRule(localctx ParserRuleContext, state, _ int) { + p.SetState(state) + p.ctx = localctx + p.ctx.SetStart(p.input.LT(1)) + if p.BuildParseTrees { + p.addContextToParseTree() + } + if p.parseListeners != nil { + p.TriggerEnterRuleEvent() + } +} + +func (p *BaseParser) ExitRule() { + p.ctx.SetStop(p.input.LT(-1)) + // trigger event on ctx, before it reverts to parent + if p.parseListeners != nil { + p.TriggerExitRuleEvent() + } + p.SetState(p.ctx.GetInvokingState()) + if p.ctx.GetParent() != nil { + p.ctx = p.ctx.GetParent().(ParserRuleContext) + } else { + p.ctx = nil + } +} + +func (p *BaseParser) EnterOuterAlt(localctx ParserRuleContext, altNum int) { + localctx.SetAltNumber(altNum) + // if we have a new localctx, make sure we replace existing ctx + // that is previous child of parse tree + if p.BuildParseTrees && p.ctx != localctx { + if p.ctx.GetParent() != nil { + p.ctx.GetParent().(ParserRuleContext).RemoveLastChild() + p.ctx.GetParent().(ParserRuleContext).AddChild(localctx) + } + } + p.ctx = localctx +} + +// Get the precedence level for the top-most precedence rule. +// +// @return The precedence level for the top-most precedence rule, or -1 if +// the parser context is not nested within a precedence rule. + +func (p *BaseParser) GetPrecedence() int { + if len(p.precedenceStack) == 0 { + return -1 + } + + return p.precedenceStack[len(p.precedenceStack)-1] +} + +func (p *BaseParser) EnterRecursionRule(localctx ParserRuleContext, state, _, precedence int) { + p.SetState(state) + p.precedenceStack.Push(precedence) + p.ctx = localctx + p.ctx.SetStart(p.input.LT(1)) + if p.parseListeners != nil { + p.TriggerEnterRuleEvent() // simulates rule entry for + // left-recursive rules + } +} + +// +// Like {@link //EnterRule} but for recursive rules. + +func (p *BaseParser) PushNewRecursionContext(localctx ParserRuleContext, state, _ int) { + previous := p.ctx + previous.SetParent(localctx) + previous.SetInvokingState(state) + previous.SetStop(p.input.LT(-1)) + + p.ctx = localctx + p.ctx.SetStart(previous.GetStart()) + if p.BuildParseTrees { + p.ctx.AddChild(previous) + } + if p.parseListeners != nil { + p.TriggerEnterRuleEvent() // simulates rule entry for + // left-recursive rules + } +} + +func (p *BaseParser) UnrollRecursionContexts(parentCtx ParserRuleContext) { + _, _ = p.precedenceStack.Pop() + p.ctx.SetStop(p.input.LT(-1)) + retCtx := p.ctx // save current ctx (return value) + // unroll so ctx is as it was before call to recursive method + if p.parseListeners != nil { + for p.ctx != parentCtx { + p.TriggerExitRuleEvent() + p.ctx = p.ctx.GetParent().(ParserRuleContext) + } + } else { + p.ctx = parentCtx + } + // hook into tree + retCtx.SetParent(parentCtx) + if p.BuildParseTrees && parentCtx != nil { + // add return ctx into invoking rule's tree + parentCtx.AddChild(retCtx) + } +} + +func (p *BaseParser) GetInvokingContext(ruleIndex int) ParserRuleContext { + ctx := p.ctx + for ctx != nil { + if ctx.GetRuleIndex() == ruleIndex { + return ctx + } + ctx = ctx.GetParent().(ParserRuleContext) + } + return nil +} + +func (p *BaseParser) Precpred(_ RuleContext, precedence int) bool { + return precedence >= p.precedenceStack[len(p.precedenceStack)-1] +} + +//goland:noinspection GoUnusedParameter +func (p *BaseParser) inContext(context ParserRuleContext) bool { + // TODO: useful in parser? + return false +} + +// IsExpectedToken checks whether symbol can follow the current state in the +// {ATN}. The behavior of p.method is equivalent to the following, but is +// implemented such that the complete context-sensitive follow set does not +// need to be explicitly constructed. +// +// return getExpectedTokens().contains(symbol) +func (p *BaseParser) IsExpectedToken(symbol int) bool { + atn := p.Interpreter.atn + ctx := p.ctx + s := atn.states[p.state] + following := atn.NextTokens(s, nil) + if following.contains(symbol) { + return true + } + if !following.contains(TokenEpsilon) { + return false + } + for ctx != nil && ctx.GetInvokingState() >= 0 && following.contains(TokenEpsilon) { + invokingState := atn.states[ctx.GetInvokingState()] + rt := invokingState.GetTransitions()[0] + following = atn.NextTokens(rt.(*RuleTransition).followState, nil) + if following.contains(symbol) { + return true + } + ctx = ctx.GetParent().(ParserRuleContext) + } + if following.contains(TokenEpsilon) && symbol == TokenEOF { + return true + } + + return false +} + +// GetExpectedTokens and returns the set of input symbols which could follow the current parser +// state and context, as given by [GetState] and [GetContext], +// respectively. +func (p *BaseParser) GetExpectedTokens() *IntervalSet { + return p.Interpreter.atn.getExpectedTokens(p.state, p.ctx) +} + +func (p *BaseParser) GetExpectedTokensWithinCurrentRule() *IntervalSet { + atn := p.Interpreter.atn + s := atn.states[p.state] + return atn.NextTokens(s, nil) +} + +// GetRuleIndex get a rule's index (i.e., RULE_ruleName field) or -1 if not found. +func (p *BaseParser) GetRuleIndex(ruleName string) int { + var ruleIndex, ok = p.GetRuleIndexMap()[ruleName] + if ok { + return ruleIndex + } + + return -1 +} + +// GetRuleInvocationStack returns a list of the rule names in your parser instance +// leading up to a call to the current rule. You could override if +// you want more details such as the file/line info of where +// in the ATN a rule is invoked. +func (p *BaseParser) GetRuleInvocationStack(c ParserRuleContext) []string { + if c == nil { + c = p.ctx + } + stack := make([]string, 0) + for c != nil { + // compute what follows who invoked us + ruleIndex := c.GetRuleIndex() + if ruleIndex < 0 { + stack = append(stack, "n/a") + } else { + stack = append(stack, p.GetRuleNames()[ruleIndex]) + } + + vp := c.GetParent() + + if vp == nil { + break + } + + c = vp.(ParserRuleContext) + } + return stack +} + +// GetDFAStrings returns a list of all DFA states used for debugging purposes +func (p *BaseParser) GetDFAStrings() string { + return fmt.Sprint(p.Interpreter.decisionToDFA) +} + +// DumpDFA prints the whole of the DFA for debugging +func (p *BaseParser) DumpDFA() { + seenOne := false + for _, dfa := range p.Interpreter.decisionToDFA { + if dfa.Len() > 0 { + if seenOne { + fmt.Println() + } + fmt.Println("Decision " + strconv.Itoa(dfa.decision) + ":") + fmt.Print(dfa.String(p.LiteralNames, p.SymbolicNames)) + seenOne = true + } + } +} + +func (p *BaseParser) GetSourceName() string { + return p.GrammarFileName +} + +// SetTrace installs a trace listener for the parse. +// +// During a parse it is sometimes useful to listen in on the rule entry and exit +// events as well as token Matches. This is for quick and dirty debugging. +func (p *BaseParser) SetTrace(trace *TraceListener) { + if trace == nil { + p.RemoveParseListener(p.tracer) + p.tracer = nil + } else { + if p.tracer != nil { + p.RemoveParseListener(p.tracer) + } + p.tracer = NewTraceListener(p) + p.AddParseListener(p.tracer) + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/parser_atn_simulator.go b/vendor/github.com/antlr4-go/antlr/v4/parser_atn_simulator.go new file mode 100644 index 0000000000..ae2869692a --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/parser_atn_simulator.go @@ -0,0 +1,1668 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" + "strings" +) + +var () + +// ClosureBusy is a store of ATNConfigs and is a tiny abstraction layer over +// a standard JStore so that we can use Lazy instantiation of the JStore, mostly +// to avoid polluting the stats module with a ton of JStore instances with nothing in them. +type ClosureBusy struct { + bMap *JStore[*ATNConfig, Comparator[*ATNConfig]] + desc string +} + +// NewClosureBusy creates a new ClosureBusy instance used to avoid infinite recursion for right-recursive rules +func NewClosureBusy(desc string) *ClosureBusy { + return &ClosureBusy{ + desc: desc, + } +} + +func (c *ClosureBusy) Put(config *ATNConfig) (*ATNConfig, bool) { + if c.bMap == nil { + c.bMap = NewJStore[*ATNConfig, Comparator[*ATNConfig]](aConfEqInst, ClosureBusyCollection, c.desc) + } + return c.bMap.Put(config) +} + +type ParserATNSimulator struct { + BaseATNSimulator + + parser Parser + predictionMode int + input TokenStream + startIndex int + dfa *DFA + mergeCache *JPCMap + outerContext ParserRuleContext +} + +//goland:noinspection GoUnusedExportedFunction +func NewParserATNSimulator(parser Parser, atn *ATN, decisionToDFA []*DFA, sharedContextCache *PredictionContextCache) *ParserATNSimulator { + + p := &ParserATNSimulator{ + BaseATNSimulator: BaseATNSimulator{ + atn: atn, + sharedContextCache: sharedContextCache, + }, + } + + p.parser = parser + p.decisionToDFA = decisionToDFA + // SLL, LL, or LL + exact ambig detection?// + p.predictionMode = PredictionModeLL + // LAME globals to avoid parameters!!!!! I need these down deep in predTransition + p.input = nil + p.startIndex = 0 + p.outerContext = nil + p.dfa = nil + // Each prediction operation uses a cache for merge of prediction contexts. + // Don't keep around as it wastes huge amounts of memory. [JPCMap] + // isn't Synchronized, but we're ok since two threads shouldn't reuse same + // parser/atn-simulator object because it can only handle one input at a time. + // This maps graphs a and b to merged result c. (a,b) -> c. We can avoid + // the merge if we ever see a and b again. Note that (b,a) -> c should + // also be examined during cache lookup. + // + p.mergeCache = nil + + return p +} + +func (p *ParserATNSimulator) GetPredictionMode() int { + return p.predictionMode +} + +func (p *ParserATNSimulator) SetPredictionMode(v int) { + p.predictionMode = v +} + +func (p *ParserATNSimulator) reset() { +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) AdaptivePredict(parser *BaseParser, input TokenStream, decision int, outerContext ParserRuleContext) int { + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("adaptivePredict decision " + strconv.Itoa(decision) + + " exec LA(1)==" + p.getLookaheadName(input) + + " line " + strconv.Itoa(input.LT(1).GetLine()) + ":" + + strconv.Itoa(input.LT(1).GetColumn())) + } + p.input = input + p.startIndex = input.Index() + p.outerContext = outerContext + + dfa := p.decisionToDFA[decision] + p.dfa = dfa + m := input.Mark() + index := input.Index() + + defer func() { + p.dfa = nil + p.mergeCache = nil // whack cache after each prediction + // Do not attempt to run a GC now that we're done with the cache as makes the + // GC overhead terrible for badly formed grammars and has little effect on well formed + // grammars. + // I have made some extra effort to try and reduce memory pressure by reusing allocations when + // possible. However, it can only have a limited effect. The real solution is to encourage grammar + // authors to think more carefully about their grammar and to use the new antlr.stats tag to inspect + // what is happening at runtime, along with using the error listener to report ambiguities. + + input.Seek(index) + input.Release(m) + }() + + // Now we are certain to have a specific decision's DFA + // But, do we still need an initial state? + var s0 *DFAState + p.atn.stateMu.RLock() + if dfa.getPrecedenceDfa() { + p.atn.edgeMu.RLock() + // the start state for a precedence DFA depends on the current + // parser precedence, and is provided by a DFA method. + s0 = dfa.getPrecedenceStartState(p.parser.GetPrecedence()) + p.atn.edgeMu.RUnlock() + } else { + // the start state for a "regular" DFA is just s0 + s0 = dfa.getS0() + } + p.atn.stateMu.RUnlock() + + if s0 == nil { + if outerContext == nil { + outerContext = ParserRuleContextEmpty + } + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("predictATN decision " + strconv.Itoa(dfa.decision) + + " exec LA(1)==" + p.getLookaheadName(input) + + ", outerContext=" + outerContext.String(p.parser.GetRuleNames(), nil)) + } + fullCtx := false + s0Closure := p.computeStartState(dfa.atnStartState, ParserRuleContextEmpty, fullCtx) + + p.atn.stateMu.Lock() + if dfa.getPrecedenceDfa() { + // If p is a precedence DFA, we use applyPrecedenceFilter + // to convert the computed start state to a precedence start + // state. We then use DFA.setPrecedenceStartState to set the + // appropriate start state for the precedence level rather + // than simply setting DFA.s0. + // + dfa.s0.configs = s0Closure + s0Closure = p.applyPrecedenceFilter(s0Closure) + s0 = p.addDFAState(dfa, NewDFAState(-1, s0Closure)) + p.atn.edgeMu.Lock() + dfa.setPrecedenceStartState(p.parser.GetPrecedence(), s0) + p.atn.edgeMu.Unlock() + } else { + s0 = p.addDFAState(dfa, NewDFAState(-1, s0Closure)) + dfa.setS0(s0) + } + p.atn.stateMu.Unlock() + } + + alt, re := p.execATN(dfa, s0, input, index, outerContext) + parser.SetError(re) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("DFA after predictATN: " + dfa.String(p.parser.GetLiteralNames(), nil)) + } + return alt + +} + +// execATN performs ATN simulation to compute a predicted alternative based +// upon the remaining input, but also updates the DFA cache to avoid +// having to traverse the ATN again for the same input sequence. +// +// There are some key conditions we're looking for after computing a new +// set of ATN configs (proposed DFA state): +// +// - If the set is empty, there is no viable alternative for current symbol +// - Does the state uniquely predict an alternative? +// - Does the state have a conflict that would prevent us from +// putting it on the work list? +// +// We also have some key operations to do: +// +// - Add an edge from previous DFA state to potentially NewDFA state, D, +// - Upon current symbol but only if adding to work list, which means in all +// cases except no viable alternative (and possibly non-greedy decisions?) +// - Collecting predicates and adding semantic context to DFA accept states +// - adding rule context to context-sensitive DFA accept states +// - Consuming an input symbol +// - Reporting a conflict +// - Reporting an ambiguity +// - Reporting a context sensitivity +// - Reporting insufficient predicates +// +// Cover these cases: +// +// - dead end +// - single alt +// - single alt + predicates +// - conflict +// - conflict + predicates +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) execATN(dfa *DFA, s0 *DFAState, input TokenStream, startIndex int, outerContext ParserRuleContext) (int, RecognitionException) { + + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("execATN decision " + strconv.Itoa(dfa.decision) + + ", DFA state " + s0.String() + + ", LA(1)==" + p.getLookaheadName(input) + + " line " + strconv.Itoa(input.LT(1).GetLine()) + ":" + strconv.Itoa(input.LT(1).GetColumn())) + } + + previousD := s0 + + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("s0 = " + s0.String()) + } + t := input.LA(1) + for { // for more work + D := p.getExistingTargetState(previousD, t) + if D == nil { + D = p.computeTargetState(dfa, previousD, t) + } + if D == ATNSimulatorError { + // if any configs in previous dipped into outer context, that + // means that input up to t actually finished entry rule + // at least for SLL decision. Full LL doesn't dip into outer + // so don't need special case. + // We will get an error no matter what so delay until after + // decision better error message. Also, no reachable target + // ATN states in SLL implies LL will also get nowhere. + // If conflict in states that dip out, choose min since we + // will get error no matter what. + e := p.noViableAlt(input, outerContext, previousD.configs, startIndex) + input.Seek(startIndex) + alt := p.getSynValidOrSemInvalidAltThatFinishedDecisionEntryRule(previousD.configs, outerContext) + if alt != ATNInvalidAltNumber { + return alt, nil + } + p.parser.SetError(e) + return ATNInvalidAltNumber, e + } + if D.requiresFullContext && p.predictionMode != PredictionModeSLL { + // IF PREDS, MIGHT RESOLVE TO SINGLE ALT => SLL (or syntax error) + conflictingAlts := D.configs.conflictingAlts + if D.predicates != nil { + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("DFA state has preds in DFA sim LL fail-over") + } + conflictIndex := input.Index() + if conflictIndex != startIndex { + input.Seek(startIndex) + } + conflictingAlts = p.evalSemanticContext(D.predicates, outerContext, true) + if conflictingAlts.length() == 1 { + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("Full LL avoided") + } + return conflictingAlts.minValue(), nil + } + if conflictIndex != startIndex { + // restore the index so Reporting the fallback to full + // context occurs with the index at the correct spot + input.Seek(conflictIndex) + } + } + if runtimeConfig.parserATNSimulatorDFADebug { + fmt.Println("ctx sensitive state " + outerContext.String(nil, nil) + " in " + D.String()) + } + fullCtx := true + s0Closure := p.computeStartState(dfa.atnStartState, outerContext, fullCtx) + p.ReportAttemptingFullContext(dfa, conflictingAlts, D.configs, startIndex, input.Index()) + alt, re := p.execATNWithFullContext(dfa, D, s0Closure, input, startIndex, outerContext) + return alt, re + } + if D.isAcceptState { + if D.predicates == nil { + return D.prediction, nil + } + stopIndex := input.Index() + input.Seek(startIndex) + alts := p.evalSemanticContext(D.predicates, outerContext, true) + + switch alts.length() { + case 0: + return ATNInvalidAltNumber, p.noViableAlt(input, outerContext, D.configs, startIndex) + case 1: + return alts.minValue(), nil + default: + // Report ambiguity after predicate evaluation to make sure the correct set of ambig alts is Reported. + p.ReportAmbiguity(dfa, D, startIndex, stopIndex, false, alts, D.configs) + return alts.minValue(), nil + } + } + previousD = D + + if t != TokenEOF { + input.Consume() + t = input.LA(1) + } + } +} + +// Get an existing target state for an edge in the DFA. If the target state +// for the edge has not yet been computed or is otherwise not available, +// p method returns {@code nil}. +// +// @param previousD The current DFA state +// @param t The next input symbol +// @return The existing target DFA state for the given input symbol +// {@code t}, or {@code nil} if the target state for p edge is not +// already cached + +func (p *ParserATNSimulator) getExistingTargetState(previousD *DFAState, t int) *DFAState { + if t+1 < 0 { + return nil + } + + p.atn.edgeMu.RLock() + defer p.atn.edgeMu.RUnlock() + edges := previousD.getEdges() + if edges == nil || t+1 >= len(edges) { + return nil + } + return previousD.getIthEdge(t + 1) +} + +// Compute a target state for an edge in the DFA, and attempt to add the +// computed state and corresponding edge to the DFA. +// +// @param dfa The DFA +// @param previousD The current DFA state +// @param t The next input symbol +// +// @return The computed target DFA state for the given input symbol +// {@code t}. If {@code t} does not lead to a valid DFA state, p method +// returns {@link //ERROR}. +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) computeTargetState(dfa *DFA, previousD *DFAState, t int) *DFAState { + reach := p.computeReachSet(previousD.configs, t, false) + + if reach == nil { + p.addDFAEdge(dfa, previousD, t, ATNSimulatorError) + return ATNSimulatorError + } + // create new target state we'll add to DFA after it's complete + D := NewDFAState(-1, reach) + + predictedAlt := p.getUniqueAlt(reach) + + if runtimeConfig.parserATNSimulatorDebug { + altSubSets := PredictionModegetConflictingAltSubsets(reach) + fmt.Println("SLL altSubSets=" + fmt.Sprint(altSubSets) + + ", previous=" + previousD.configs.String() + + ", configs=" + reach.String() + + ", predict=" + strconv.Itoa(predictedAlt) + + ", allSubsetsConflict=" + + fmt.Sprint(PredictionModeallSubsetsConflict(altSubSets)) + + ", conflictingAlts=" + p.getConflictingAlts(reach).String()) + } + if predictedAlt != ATNInvalidAltNumber { + // NO CONFLICT, UNIQUELY PREDICTED ALT + D.isAcceptState = true + D.configs.uniqueAlt = predictedAlt + D.setPrediction(predictedAlt) + } else if PredictionModehasSLLConflictTerminatingPrediction(p.predictionMode, reach) { + // MORE THAN ONE VIABLE ALTERNATIVE + D.configs.conflictingAlts = p.getConflictingAlts(reach) + D.requiresFullContext = true + // in SLL-only mode, we will stop at p state and return the minimum alt + D.isAcceptState = true + D.setPrediction(D.configs.conflictingAlts.minValue()) + } + if D.isAcceptState && D.configs.hasSemanticContext { + p.predicateDFAState(D, p.atn.getDecisionState(dfa.decision)) + if D.predicates != nil { + D.setPrediction(ATNInvalidAltNumber) + } + } + // all adds to dfa are done after we've created full D state + D = p.addDFAEdge(dfa, previousD, t, D) + return D +} + +func (p *ParserATNSimulator) predicateDFAState(dfaState *DFAState, decisionState DecisionState) { + // We need to test all predicates, even in DFA states that + // uniquely predict alternative. + nalts := len(decisionState.GetTransitions()) + // Update DFA so reach becomes accept state with (predicate,alt) + // pairs if preds found for conflicting alts + altsToCollectPredsFrom := p.getConflictingAltsOrUniqueAlt(dfaState.configs) + altToPred := p.getPredsForAmbigAlts(altsToCollectPredsFrom, dfaState.configs, nalts) + if altToPred != nil { + dfaState.predicates = p.getPredicatePredictions(altsToCollectPredsFrom, altToPred) + dfaState.setPrediction(ATNInvalidAltNumber) // make sure we use preds + } else { + // There are preds in configs but they might go away + // when OR'd together like {p}? || NONE == NONE. If neither + // alt has preds, resolve to min alt + dfaState.setPrediction(altsToCollectPredsFrom.minValue()) + } +} + +// comes back with reach.uniqueAlt set to a valid alt +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) execATNWithFullContext(dfa *DFA, D *DFAState, s0 *ATNConfigSet, input TokenStream, startIndex int, outerContext ParserRuleContext) (int, RecognitionException) { + + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("execATNWithFullContext " + s0.String()) + } + + fullCtx := true + foundExactAmbig := false + var reach *ATNConfigSet + previous := s0 + input.Seek(startIndex) + t := input.LA(1) + predictedAlt := -1 + + for { // for more work + reach = p.computeReachSet(previous, t, fullCtx) + if reach == nil { + // if any configs in previous dipped into outer context, that + // means that input up to t actually finished entry rule + // at least for LL decision. Full LL doesn't dip into outer + // so don't need special case. + // We will get an error no matter what so delay until after + // decision better error message. Also, no reachable target + // ATN states in SLL implies LL will also get nowhere. + // If conflict in states that dip out, choose min since we + // will get error no matter what. + input.Seek(startIndex) + alt := p.getSynValidOrSemInvalidAltThatFinishedDecisionEntryRule(previous, outerContext) + if alt != ATNInvalidAltNumber { + return alt, nil + } + return alt, p.noViableAlt(input, outerContext, previous, startIndex) + } + altSubSets := PredictionModegetConflictingAltSubsets(reach) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("LL altSubSets=" + fmt.Sprint(altSubSets) + ", predict=" + + strconv.Itoa(PredictionModegetUniqueAlt(altSubSets)) + ", resolvesToJustOneViableAlt=" + + fmt.Sprint(PredictionModeresolvesToJustOneViableAlt(altSubSets))) + } + reach.uniqueAlt = p.getUniqueAlt(reach) + // unique prediction? + if reach.uniqueAlt != ATNInvalidAltNumber { + predictedAlt = reach.uniqueAlt + break + } + if p.predictionMode != PredictionModeLLExactAmbigDetection { + predictedAlt = PredictionModeresolvesToJustOneViableAlt(altSubSets) + if predictedAlt != ATNInvalidAltNumber { + break + } + } else { + // In exact ambiguity mode, we never try to terminate early. + // Just keeps scarfing until we know what the conflict is + if PredictionModeallSubsetsConflict(altSubSets) && PredictionModeallSubsetsEqual(altSubSets) { + foundExactAmbig = true + predictedAlt = PredictionModegetSingleViableAlt(altSubSets) + break + } + // else there are multiple non-conflicting subsets or + // we're not sure what the ambiguity is yet. + // So, keep going. + } + previous = reach + if t != TokenEOF { + input.Consume() + t = input.LA(1) + } + } + // If the configuration set uniquely predicts an alternative, + // without conflict, then we know that it's a full LL decision + // not SLL. + if reach.uniqueAlt != ATNInvalidAltNumber { + p.ReportContextSensitivity(dfa, predictedAlt, reach, startIndex, input.Index()) + return predictedAlt, nil + } + // We do not check predicates here because we have checked them + // on-the-fly when doing full context prediction. + + // + // In non-exact ambiguity detection mode, we might actually be able to + // detect an exact ambiguity, but I'm not going to spend the cycles + // needed to check. We only emit ambiguity warnings in exact ambiguity + // mode. + // + // For example, we might know that we have conflicting configurations. + // But, that does not mean that there is no way forward without a + // conflict. It's possible to have non-conflicting alt subsets as in: + // + // altSubSets=[{1, 2}, {1, 2}, {1}, {1, 2}] + // + // from + // + // [(17,1,[5 $]), (13,1,[5 10 $]), (21,1,[5 10 $]), (11,1,[$]), + // (13,2,[5 10 $]), (21,2,[5 10 $]), (11,2,[$])] + // + // In p case, (17,1,[5 $]) indicates there is some next sequence that + // would resolve p without conflict to alternative 1. Any other viable + // next sequence, however, is associated with a conflict. We stop + // looking for input because no amount of further lookahead will alter + // the fact that we should predict alternative 1. We just can't say for + // sure that there is an ambiguity without looking further. + + p.ReportAmbiguity(dfa, D, startIndex, input.Index(), foundExactAmbig, reach.Alts(), reach) + + return predictedAlt, nil +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) computeReachSet(closure *ATNConfigSet, t int, fullCtx bool) *ATNConfigSet { + if p.mergeCache == nil { + p.mergeCache = NewJPCMap(ReachSetCollection, "Merge cache for computeReachSet()") + } + intermediate := NewATNConfigSet(fullCtx) + + // Configurations already in a rule stop state indicate reaching the end + // of the decision rule (local context) or end of the start rule (full + // context). Once reached, these configurations are never updated by a + // closure operation, so they are handled separately for the performance + // advantage of having a smaller intermediate set when calling closure. + // + // For full-context reach operations, separate handling is required to + // ensure that the alternative Matching the longest overall sequence is + // chosen when multiple such configurations can Match the input. + + var skippedStopStates []*ATNConfig + + // First figure out where we can reach on input t + for _, c := range closure.configs { + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("testing " + p.GetTokenName(t) + " at " + c.String()) + } + + if _, ok := c.GetState().(*RuleStopState); ok { + if fullCtx || t == TokenEOF { + skippedStopStates = append(skippedStopStates, c) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("added " + c.String() + " to SkippedStopStates") + } + } + continue + } + + for _, trans := range c.GetState().GetTransitions() { + target := p.getReachableTarget(trans, t) + if target != nil { + cfg := NewATNConfig4(c, target) + intermediate.Add(cfg, p.mergeCache) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("added " + cfg.String() + " to intermediate") + } + } + } + } + + // Now figure out where the reach operation can take us... + var reach *ATNConfigSet + + // This block optimizes the reach operation for intermediate sets which + // trivially indicate a termination state for the overall + // AdaptivePredict operation. + // + // The conditions assume that intermediate + // contains all configurations relevant to the reach set, but p + // condition is not true when one or more configurations have been + // withheld in SkippedStopStates, or when the current symbol is EOF. + // + if skippedStopStates == nil && t != TokenEOF { + if len(intermediate.configs) == 1 { + // Don't pursue the closure if there is just one state. + // It can only have one alternative just add to result + // Also don't pursue the closure if there is unique alternative + // among the configurations. + reach = intermediate + } else if p.getUniqueAlt(intermediate) != ATNInvalidAltNumber { + // Also don't pursue the closure if there is unique alternative + // among the configurations. + reach = intermediate + } + } + // If the reach set could not be trivially determined, perform a closure + // operation on the intermediate set to compute its initial value. + // + if reach == nil { + reach = NewATNConfigSet(fullCtx) + closureBusy := NewClosureBusy("ParserATNSimulator.computeReachSet() make a closureBusy") + treatEOFAsEpsilon := t == TokenEOF + amount := len(intermediate.configs) + for k := 0; k < amount; k++ { + p.closure(intermediate.configs[k], reach, closureBusy, false, fullCtx, treatEOFAsEpsilon) + } + } + if t == TokenEOF { + // After consuming EOF no additional input is possible, so we are + // only interested in configurations which reached the end of the + // decision rule (local context) or end of the start rule (full + // context). Update reach to contain only these configurations. This + // handles both explicit EOF transitions in the grammar and implicit + // EOF transitions following the end of the decision or start rule. + // + // When reach==intermediate, no closure operation was performed. In + // p case, removeAllConfigsNotInRuleStopState needs to check for + // reachable rule stop states as well as configurations already in + // a rule stop state. + // + // This is handled before the configurations in SkippedStopStates, + // because any configurations potentially added from that list are + // already guaranteed to meet this condition whether it's + // required. + // + reach = p.removeAllConfigsNotInRuleStopState(reach, reach.Equals(intermediate)) + } + // If SkippedStopStates!=nil, then it contains at least one + // configuration. For full-context reach operations, these + // configurations reached the end of the start rule, in which case we + // only add them back to reach if no configuration during the current + // closure operation reached such a state. This ensures AdaptivePredict + // chooses an alternative Matching the longest overall sequence when + // multiple alternatives are viable. + // + if skippedStopStates != nil && ((!fullCtx) || (!PredictionModehasConfigInRuleStopState(reach))) { + for l := 0; l < len(skippedStopStates); l++ { + reach.Add(skippedStopStates[l], p.mergeCache) + } + } + + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("computeReachSet " + closure.String() + " -> " + reach.String()) + } + + if len(reach.configs) == 0 { + return nil + } + + return reach +} + +// removeAllConfigsNotInRuleStopState returns a configuration set containing only the configurations from +// configs which are in a [RuleStopState]. If all +// configurations in configs are already in a rule stop state, this +// method simply returns configs. +// +// When lookToEndOfRule is true, this method uses +// [ATN].[NextTokens] for each configuration in configs which is +// not already in a rule stop state to see if a rule stop state is reachable +// from the configuration via epsilon-only transitions. +// +// When lookToEndOfRule is true, this method checks for rule stop states +// reachable by epsilon-only transitions from each configuration in +// configs. +// +// The func returns configs if all configurations in configs are in a +// rule stop state, otherwise it returns a new configuration set containing only +// the configurations from configs which are in a rule stop state +func (p *ParserATNSimulator) removeAllConfigsNotInRuleStopState(configs *ATNConfigSet, lookToEndOfRule bool) *ATNConfigSet { + if PredictionModeallConfigsInRuleStopStates(configs) { + return configs + } + result := NewATNConfigSet(configs.fullCtx) + for _, config := range configs.configs { + if _, ok := config.GetState().(*RuleStopState); ok { + result.Add(config, p.mergeCache) + continue + } + if lookToEndOfRule && config.GetState().GetEpsilonOnlyTransitions() { + NextTokens := p.atn.NextTokens(config.GetState(), nil) + if NextTokens.contains(TokenEpsilon) { + endOfRuleState := p.atn.ruleToStopState[config.GetState().GetRuleIndex()] + result.Add(NewATNConfig4(config, endOfRuleState), p.mergeCache) + } + } + } + return result +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) computeStartState(a ATNState, ctx RuleContext, fullCtx bool) *ATNConfigSet { + // always at least the implicit call to start rule + initialContext := predictionContextFromRuleContext(p.atn, ctx) + configs := NewATNConfigSet(fullCtx) + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("computeStartState from ATN state " + a.String() + + " initialContext=" + initialContext.String()) + } + + for i := 0; i < len(a.GetTransitions()); i++ { + target := a.GetTransitions()[i].getTarget() + c := NewATNConfig6(target, i+1, initialContext) + closureBusy := NewClosureBusy("ParserATNSimulator.computeStartState() make a closureBusy") + p.closure(c, configs, closureBusy, true, fullCtx, false) + } + return configs +} + +// applyPrecedenceFilter transforms the start state computed by +// [computeStartState] to the special start state used by a +// precedence [DFA] for a particular precedence value. The transformation +// process applies the following changes to the start state's configuration +// set. +// +// 1. Evaluate the precedence predicates for each configuration using +// [SemanticContext].evalPrecedence. +// 2. Remove all configurations which predict an alternative greater than +// 1, for which another configuration that predicts alternative 1 is in the +// same ATN state with the same prediction context. +// +// Transformation 2 is valid for the following reasons: +// +// - The closure block cannot contain any epsilon transitions which bypass +// the body of the closure, so all states reachable via alternative 1 are +// part of the precedence alternatives of the transformed left-recursive +// rule. +// - The "primary" portion of a left recursive rule cannot contain an +// epsilon transition, so the only way an alternative other than 1 can exist +// in a state that is also reachable via alternative 1 is by nesting calls +// to the left-recursive rule, with the outer calls not being at the +// preferred precedence level. +// +// The prediction context must be considered by this filter to address +// situations like the following: +// +// grammar TA +// prog: statement* EOF +// statement: letterA | statement letterA 'b' +// letterA: 'a' +// +// In the above grammar, the [ATN] state immediately before the token +// reference 'a' in letterA is reachable from the left edge +// of both the primary and closure blocks of the left-recursive rule +// statement. The prediction context associated with each of these +// configurations distinguishes between them, and prevents the alternative +// which stepped out to prog, and then back in to statement +// from being eliminated by the filter. +// +// The func returns the transformed configuration set representing the start state +// for a precedence [DFA] at a particular precedence level (determined by +// calling [Parser].getPrecedence). +func (p *ParserATNSimulator) applyPrecedenceFilter(configs *ATNConfigSet) *ATNConfigSet { + + statesFromAlt1 := make(map[int]*PredictionContext) + configSet := NewATNConfigSet(configs.fullCtx) + + for _, config := range configs.configs { + // handle alt 1 first + if config.GetAlt() != 1 { + continue + } + updatedContext := config.GetSemanticContext().evalPrecedence(p.parser, p.outerContext) + if updatedContext == nil { + // the configuration was eliminated + continue + } + statesFromAlt1[config.GetState().GetStateNumber()] = config.GetContext() + if updatedContext != config.GetSemanticContext() { + configSet.Add(NewATNConfig2(config, updatedContext), p.mergeCache) + } else { + configSet.Add(config, p.mergeCache) + } + } + for _, config := range configs.configs { + + if config.GetAlt() == 1 { + // already handled + continue + } + // In the future, p elimination step could be updated to also + // filter the prediction context for alternatives predicting alt>1 + // (basically a graph subtraction algorithm). + if !config.getPrecedenceFilterSuppressed() { + context := statesFromAlt1[config.GetState().GetStateNumber()] + if context != nil && context.Equals(config.GetContext()) { + // eliminated + continue + } + } + configSet.Add(config, p.mergeCache) + } + return configSet +} + +func (p *ParserATNSimulator) getReachableTarget(trans Transition, ttype int) ATNState { + if trans.Matches(ttype, 0, p.atn.maxTokenType) { + return trans.getTarget() + } + + return nil +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) getPredsForAmbigAlts(ambigAlts *BitSet, configs *ATNConfigSet, nalts int) []SemanticContext { + + altToPred := make([]SemanticContext, nalts+1) + for _, c := range configs.configs { + if ambigAlts.contains(c.GetAlt()) { + altToPred[c.GetAlt()] = SemanticContextorContext(altToPred[c.GetAlt()], c.GetSemanticContext()) + } + } + nPredAlts := 0 + for i := 1; i <= nalts; i++ { + pred := altToPred[i] + if pred == nil { + altToPred[i] = SemanticContextNone + } else if pred != SemanticContextNone { + nPredAlts++ + } + } + // unambiguous alts are nil in altToPred + if nPredAlts == 0 { + altToPred = nil + } + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("getPredsForAmbigAlts result " + fmt.Sprint(altToPred)) + } + return altToPred +} + +func (p *ParserATNSimulator) getPredicatePredictions(ambigAlts *BitSet, altToPred []SemanticContext) []*PredPrediction { + pairs := make([]*PredPrediction, 0) + containsPredicate := false + for i := 1; i < len(altToPred); i++ { + pred := altToPred[i] + // un-predicated is indicated by SemanticContextNONE + if ambigAlts != nil && ambigAlts.contains(i) { + pairs = append(pairs, NewPredPrediction(pred, i)) + } + if pred != SemanticContextNone { + containsPredicate = true + } + } + if !containsPredicate { + return nil + } + return pairs +} + +// getSynValidOrSemInvalidAltThatFinishedDecisionEntryRule is used to improve the localization of error messages by +// choosing an alternative rather than panic a NoViableAltException in particular prediction scenarios where the +// Error state was reached during [ATN] simulation. +// +// The default implementation of this method uses the following +// algorithm to identify an [ATN] configuration which successfully parsed the +// decision entry rule. Choosing such an alternative ensures that the +// [ParserRuleContext] returned by the calling rule will be complete +// and valid, and the syntax error will be Reported later at a more +// localized location. +// +// - If a syntactically valid path or paths reach the end of the decision rule, and +// they are semantically valid if predicated, return the min associated alt. +// - Else, if a semantically invalid but syntactically valid path exist +// or paths exist, return the minimum associated alt. +// - Otherwise, return [ATNInvalidAltNumber]. +// +// In some scenarios, the algorithm described above could predict an +// alternative which will result in a [FailedPredicateException] in +// the parser. Specifically, this could occur if the only configuration +// capable of successfully parsing to the end of the decision rule is +// blocked by a semantic predicate. By choosing this alternative within +// [AdaptivePredict] instead of panic a [NoViableAltException], the resulting +// [FailedPredicateException] in the parser will identify the specific +// predicate which is preventing the parser from successfully parsing the +// decision rule, which helps developers identify and correct logic errors +// in semantic predicates. +// +// pass in the configs holding ATN configurations which were valid immediately before +// the ERROR state was reached, outerContext as the initial parser context from the paper +// or the parser stack at the instant before prediction commences. +// +// Teh func returns the value to return from [AdaptivePredict], or +// [ATNInvalidAltNumber] if a suitable alternative was not +// identified and [AdaptivePredict] should report an error instead. +func (p *ParserATNSimulator) getSynValidOrSemInvalidAltThatFinishedDecisionEntryRule(configs *ATNConfigSet, outerContext ParserRuleContext) int { + cfgs := p.splitAccordingToSemanticValidity(configs, outerContext) + semValidConfigs := cfgs[0] + semInvalidConfigs := cfgs[1] + alt := p.GetAltThatFinishedDecisionEntryRule(semValidConfigs) + if alt != ATNInvalidAltNumber { // semantically/syntactically viable path exists + return alt + } + // Is there a syntactically valid path with a failed pred? + if len(semInvalidConfigs.configs) > 0 { + alt = p.GetAltThatFinishedDecisionEntryRule(semInvalidConfigs) + if alt != ATNInvalidAltNumber { // syntactically viable path exists + return alt + } + } + return ATNInvalidAltNumber +} + +func (p *ParserATNSimulator) GetAltThatFinishedDecisionEntryRule(configs *ATNConfigSet) int { + alts := NewIntervalSet() + + for _, c := range configs.configs { + _, ok := c.GetState().(*RuleStopState) + + if c.GetReachesIntoOuterContext() > 0 || (ok && c.GetContext().hasEmptyPath()) { + alts.addOne(c.GetAlt()) + } + } + if alts.length() == 0 { + return ATNInvalidAltNumber + } + + return alts.first() +} + +// Walk the list of configurations and split them according to +// those that have preds evaluating to true/false. If no pred, assume +// true pred and include in succeeded set. Returns Pair of sets. +// +// Create a NewSet so as not to alter the incoming parameter. +// +// Assumption: the input stream has been restored to the starting point +// prediction, which is where predicates need to evaluate. + +type ATNConfigSetPair struct { + item0, item1 *ATNConfigSet +} + +func (p *ParserATNSimulator) splitAccordingToSemanticValidity(configs *ATNConfigSet, outerContext ParserRuleContext) []*ATNConfigSet { + succeeded := NewATNConfigSet(configs.fullCtx) + failed := NewATNConfigSet(configs.fullCtx) + + for _, c := range configs.configs { + if c.GetSemanticContext() != SemanticContextNone { + predicateEvaluationResult := c.GetSemanticContext().evaluate(p.parser, outerContext) + if predicateEvaluationResult { + succeeded.Add(c, nil) + } else { + failed.Add(c, nil) + } + } else { + succeeded.Add(c, nil) + } + } + return []*ATNConfigSet{succeeded, failed} +} + +// evalSemanticContext looks through a list of predicate/alt pairs, returning alts for the +// pairs that win. A [SemanticContextNone] predicate indicates an alt containing an +// un-predicated runtimeConfig which behaves as "always true." If !complete +// then we stop at the first predicate that evaluates to true. This +// includes pairs with nil predicates. +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) evalSemanticContext(predPredictions []*PredPrediction, outerContext ParserRuleContext, complete bool) *BitSet { + predictions := NewBitSet() + for i := 0; i < len(predPredictions); i++ { + pair := predPredictions[i] + if pair.pred == SemanticContextNone { + predictions.add(pair.alt) + if !complete { + break + } + continue + } + + predicateEvaluationResult := pair.pred.evaluate(p.parser, outerContext) + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorDFADebug { + fmt.Println("eval pred " + pair.String() + "=" + fmt.Sprint(predicateEvaluationResult)) + } + if predicateEvaluationResult { + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorDFADebug { + fmt.Println("PREDICT " + fmt.Sprint(pair.alt)) + } + predictions.add(pair.alt) + if !complete { + break + } + } + } + return predictions +} + +func (p *ParserATNSimulator) closure(config *ATNConfig, configs *ATNConfigSet, closureBusy *ClosureBusy, collectPredicates, fullCtx, treatEOFAsEpsilon bool) { + initialDepth := 0 + p.closureCheckingStopState(config, configs, closureBusy, collectPredicates, + fullCtx, initialDepth, treatEOFAsEpsilon) +} + +func (p *ParserATNSimulator) closureCheckingStopState(config *ATNConfig, configs *ATNConfigSet, closureBusy *ClosureBusy, collectPredicates, fullCtx bool, depth int, treatEOFAsEpsilon bool) { + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("closure(" + config.String() + ")") + } + + var stack []*ATNConfig + visited := make(map[*ATNConfig]bool) + + stack = append(stack, config) + + for len(stack) > 0 { + currConfig := stack[len(stack)-1] + stack = stack[:len(stack)-1] + + if _, ok := visited[currConfig]; ok { + continue + } + visited[currConfig] = true + + if _, ok := currConfig.GetState().(*RuleStopState); ok { + // We hit rule end. If we have context info, use it + // run thru all possible stack tops in ctx + if !currConfig.GetContext().isEmpty() { + for i := 0; i < currConfig.GetContext().length(); i++ { + if currConfig.GetContext().getReturnState(i) == BasePredictionContextEmptyReturnState { + if fullCtx { + nb := NewATNConfig1(currConfig, currConfig.GetState(), BasePredictionContextEMPTY) + configs.Add(nb, p.mergeCache) + continue + } else { + // we have no context info, just chase follow links (if greedy) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("FALLING off rule " + p.getRuleName(currConfig.GetState().GetRuleIndex())) + } + p.closureWork(currConfig, configs, closureBusy, collectPredicates, fullCtx, depth, treatEOFAsEpsilon) + } + continue + } + returnState := p.atn.states[currConfig.GetContext().getReturnState(i)] + newContext := currConfig.GetContext().GetParent(i) // "pop" return state + + c := NewATNConfig5(returnState, currConfig.GetAlt(), newContext, currConfig.GetSemanticContext()) + // While we have context to pop back from, we may have + // gotten that context AFTER having falling off a rule. + // Make sure we track that we are now out of context. + c.SetReachesIntoOuterContext(currConfig.GetReachesIntoOuterContext()) + + stack = append(stack, c) + } + continue + } else if fullCtx { + // reached end of start rule + configs.Add(currConfig, p.mergeCache) + continue + } else { + // else if we have no context info, just chase follow links (if greedy) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("FALLING off rule " + p.getRuleName(currConfig.GetState().GetRuleIndex())) + } + } + } + + p.closureWork(currConfig, configs, closureBusy, collectPredicates, fullCtx, depth, treatEOFAsEpsilon) + } +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) closureCheckingStopStateRecursive(config *ATNConfig, configs *ATNConfigSet, closureBusy *ClosureBusy, collectPredicates, fullCtx bool, depth int, treatEOFAsEpsilon bool) { + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("closure(" + config.String() + ")") + } + + if _, ok := config.GetState().(*RuleStopState); ok { + // We hit rule end. If we have context info, use it + // run thru all possible stack tops in ctx + if !config.GetContext().isEmpty() { + for i := 0; i < config.GetContext().length(); i++ { + if config.GetContext().getReturnState(i) == BasePredictionContextEmptyReturnState { + if fullCtx { + nb := NewATNConfig1(config, config.GetState(), BasePredictionContextEMPTY) + configs.Add(nb, p.mergeCache) + continue + } else { + // we have no context info, just chase follow links (if greedy) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("FALLING off rule " + p.getRuleName(config.GetState().GetRuleIndex())) + } + p.closureWork(config, configs, closureBusy, collectPredicates, fullCtx, depth, treatEOFAsEpsilon) + } + continue + } + returnState := p.atn.states[config.GetContext().getReturnState(i)] + newContext := config.GetContext().GetParent(i) // "pop" return state + + c := NewATNConfig5(returnState, config.GetAlt(), newContext, config.GetSemanticContext()) + // While we have context to pop back from, we may have + // gotten that context AFTER having falling off a rule. + // Make sure we track that we are now out of context. + c.SetReachesIntoOuterContext(config.GetReachesIntoOuterContext()) + p.closureCheckingStopState(c, configs, closureBusy, collectPredicates, fullCtx, depth-1, treatEOFAsEpsilon) + } + return + } else if fullCtx { + // reached end of start rule + configs.Add(config, p.mergeCache) + return + } else { + // else if we have no context info, just chase follow links (if greedy) + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("FALLING off rule " + p.getRuleName(config.GetState().GetRuleIndex())) + } + } + } + p.closureWork(config, configs, closureBusy, collectPredicates, fullCtx, depth, treatEOFAsEpsilon) +} + +// Do the actual work of walking epsilon edges +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) closureWork(config *ATNConfig, configs *ATNConfigSet, closureBusy *ClosureBusy, collectPredicates, fullCtx bool, depth int, treatEOFAsEpsilon bool) { + state := config.GetState() + // optimization + if !state.GetEpsilonOnlyTransitions() { + configs.Add(config, p.mergeCache) + // make sure to not return here, because EOF transitions can act as + // both epsilon transitions and non-epsilon transitions. + } + for i := 0; i < len(state.GetTransitions()); i++ { + if i == 0 && p.canDropLoopEntryEdgeInLeftRecursiveRule(config) { + continue + } + + t := state.GetTransitions()[i] + _, ok := t.(*ActionTransition) + continueCollecting := collectPredicates && !ok + c := p.getEpsilonTarget(config, t, continueCollecting, depth == 0, fullCtx, treatEOFAsEpsilon) + if c != nil { + newDepth := depth + + if _, ok := config.GetState().(*RuleStopState); ok { + // target fell off end of rule mark resulting c as having dipped into outer context + // We can't get here if incoming config was rule stop and we had context + // track how far we dip into outer context. Might + // come in handy and we avoid evaluating context dependent + // preds if this is > 0. + + if p.dfa != nil && p.dfa.getPrecedenceDfa() { + if t.(*EpsilonTransition).outermostPrecedenceReturn == p.dfa.atnStartState.GetRuleIndex() { + c.setPrecedenceFilterSuppressed(true) + } + } + + c.SetReachesIntoOuterContext(c.GetReachesIntoOuterContext() + 1) + + _, present := closureBusy.Put(c) + if present { + // avoid infinite recursion for right-recursive rules + continue + } + + configs.dipsIntoOuterContext = true // TODO: can remove? only care when we add to set per middle of this method + newDepth-- + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("dips into outer ctx: " + c.String()) + } + } else { + + if !t.getIsEpsilon() { + _, present := closureBusy.Put(c) + if present { + // avoid infinite recursion for EOF* and EOF+ + continue + } + } + if _, ok := t.(*RuleTransition); ok { + // latch when newDepth goes negative - once we step out of the entry context we can't return + if newDepth >= 0 { + newDepth++ + } + } + } + p.closureCheckingStopState(c, configs, closureBusy, continueCollecting, fullCtx, newDepth, treatEOFAsEpsilon) + } + } +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) canDropLoopEntryEdgeInLeftRecursiveRule(config *ATNConfig) bool { + if !runtimeConfig.lRLoopEntryBranchOpt { + return false + } + + _p := config.GetState() + + // First check to see if we are in StarLoopEntryState generated during + // left-recursion elimination. For efficiency, also check if + // the context has an empty stack case. If so, it would mean + // global FOLLOW so we can't perform optimization + if _p.GetStateType() != ATNStateStarLoopEntry { + return false + } + startLoop, ok := _p.(*StarLoopEntryState) + if !ok { + return false + } + if !startLoop.precedenceRuleDecision || + config.GetContext().isEmpty() || + config.GetContext().hasEmptyPath() { + return false + } + + // Require all return states to return back to the same rule + // that p is in. + numCtxs := config.GetContext().length() + for i := 0; i < numCtxs; i++ { + returnState := p.atn.states[config.GetContext().getReturnState(i)] + if returnState.GetRuleIndex() != _p.GetRuleIndex() { + return false + } + } + x := _p.GetTransitions()[0].getTarget() + decisionStartState := x.(BlockStartState) + blockEndStateNum := decisionStartState.getEndState().stateNumber + blockEndState := p.atn.states[blockEndStateNum].(*BlockEndState) + + // Verify that the top of each stack context leads to loop entry/exit + // state through epsilon edges and w/o leaving rule. + + for i := 0; i < numCtxs; i++ { // for each stack context + returnStateNumber := config.GetContext().getReturnState(i) + returnState := p.atn.states[returnStateNumber] + + // all states must have single outgoing epsilon edge + if len(returnState.GetTransitions()) != 1 || !returnState.GetTransitions()[0].getIsEpsilon() { + return false + } + + // Look for prefix op case like 'not expr', (' type ')' expr + returnStateTarget := returnState.GetTransitions()[0].getTarget() + if returnState.GetStateType() == ATNStateBlockEnd && returnStateTarget == _p { + continue + } + + // Look for 'expr op expr' or case where expr's return state is block end + // of (...)* internal block; the block end points to loop back + // which points to p but we don't need to check that + if returnState == blockEndState { + continue + } + + // Look for ternary expr ? expr : expr. The return state points at block end, + // which points at loop entry state + if returnStateTarget == blockEndState { + continue + } + + // Look for complex prefix 'between expr and expr' case where 2nd expr's + // return state points at block end state of (...)* internal block + if returnStateTarget.GetStateType() == ATNStateBlockEnd && + len(returnStateTarget.GetTransitions()) == 1 && + returnStateTarget.GetTransitions()[0].getIsEpsilon() && + returnStateTarget.GetTransitions()[0].getTarget() == _p { + continue + } + + // anything else ain't conforming + return false + } + + return true +} + +func (p *ParserATNSimulator) getRuleName(index int) string { + if p.parser != nil && index >= 0 { + return p.parser.GetRuleNames()[index] + } + var sb strings.Builder + sb.Grow(32) + + sb.WriteString("') + return sb.String() +} + +func (p *ParserATNSimulator) getEpsilonTarget(config *ATNConfig, t Transition, collectPredicates, inContext, fullCtx, treatEOFAsEpsilon bool) *ATNConfig { + + switch t.getSerializationType() { + case TransitionRULE: + return p.ruleTransition(config, t.(*RuleTransition)) + case TransitionPRECEDENCE: + return p.precedenceTransition(config, t.(*PrecedencePredicateTransition), collectPredicates, inContext, fullCtx) + case TransitionPREDICATE: + return p.predTransition(config, t.(*PredicateTransition), collectPredicates, inContext, fullCtx) + case TransitionACTION: + return p.actionTransition(config, t.(*ActionTransition)) + case TransitionEPSILON: + return NewATNConfig4(config, t.getTarget()) + case TransitionATOM, TransitionRANGE, TransitionSET: + // EOF transitions act like epsilon transitions after the first EOF + // transition is traversed + if treatEOFAsEpsilon { + if t.Matches(TokenEOF, 0, 1) { + return NewATNConfig4(config, t.getTarget()) + } + } + return nil + default: + return nil + } +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) actionTransition(config *ATNConfig, t *ActionTransition) *ATNConfig { + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("ACTION edge " + strconv.Itoa(t.ruleIndex) + ":" + strconv.Itoa(t.actionIndex)) + } + return NewATNConfig4(config, t.getTarget()) +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) precedenceTransition(config *ATNConfig, + pt *PrecedencePredicateTransition, collectPredicates, inContext, fullCtx bool) *ATNConfig { + + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("PRED (collectPredicates=" + fmt.Sprint(collectPredicates) + ") " + + strconv.Itoa(pt.precedence) + ">=_p, ctx dependent=true") + if p.parser != nil { + fmt.Println("context surrounding pred is " + fmt.Sprint(p.parser.GetRuleInvocationStack(nil))) + } + } + var c *ATNConfig + if collectPredicates && inContext { + if fullCtx { + // In full context mode, we can evaluate predicates on-the-fly + // during closure, which dramatically reduces the size of + // the runtimeConfig sets. It also obviates the need to test predicates + // later during conflict resolution. + currentPosition := p.input.Index() + p.input.Seek(p.startIndex) + predSucceeds := pt.getPredicate().evaluate(p.parser, p.outerContext) + p.input.Seek(currentPosition) + if predSucceeds { + c = NewATNConfig4(config, pt.getTarget()) // no pred context + } + } else { + newSemCtx := SemanticContextandContext(config.GetSemanticContext(), pt.getPredicate()) + c = NewATNConfig3(config, pt.getTarget(), newSemCtx) + } + } else { + c = NewATNConfig4(config, pt.getTarget()) + } + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("runtimeConfig from pred transition=" + c.String()) + } + return c +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) predTransition(config *ATNConfig, pt *PredicateTransition, collectPredicates, inContext, fullCtx bool) *ATNConfig { + + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("PRED (collectPredicates=" + fmt.Sprint(collectPredicates) + ") " + strconv.Itoa(pt.ruleIndex) + + ":" + strconv.Itoa(pt.predIndex) + ", ctx dependent=" + fmt.Sprint(pt.isCtxDependent)) + if p.parser != nil { + fmt.Println("context surrounding pred is " + fmt.Sprint(p.parser.GetRuleInvocationStack(nil))) + } + } + var c *ATNConfig + if collectPredicates && (!pt.isCtxDependent || inContext) { + if fullCtx { + // In full context mode, we can evaluate predicates on-the-fly + // during closure, which dramatically reduces the size of + // the config sets. It also obviates the need to test predicates + // later during conflict resolution. + currentPosition := p.input.Index() + p.input.Seek(p.startIndex) + predSucceeds := pt.getPredicate().evaluate(p.parser, p.outerContext) + p.input.Seek(currentPosition) + if predSucceeds { + c = NewATNConfig4(config, pt.getTarget()) // no pred context + } + } else { + newSemCtx := SemanticContextandContext(config.GetSemanticContext(), pt.getPredicate()) + c = NewATNConfig3(config, pt.getTarget(), newSemCtx) + } + } else { + c = NewATNConfig4(config, pt.getTarget()) + } + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("config from pred transition=" + c.String()) + } + return c +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) ruleTransition(config *ATNConfig, t *RuleTransition) *ATNConfig { + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("CALL rule " + p.getRuleName(t.getTarget().GetRuleIndex()) + ", ctx=" + config.GetContext().String()) + } + returnState := t.followState + newContext := SingletonBasePredictionContextCreate(config.GetContext(), returnState.GetStateNumber()) + return NewATNConfig1(config, t.getTarget(), newContext) +} + +func (p *ParserATNSimulator) getConflictingAlts(configs *ATNConfigSet) *BitSet { + altsets := PredictionModegetConflictingAltSubsets(configs) + return PredictionModeGetAlts(altsets) +} + +// getConflictingAltsOrUniqueAlt Sam pointed out a problem with the previous definition, v3, of +// ambiguous states. If we have another state associated with conflicting +// alternatives, we should keep going. For example, the following grammar +// +// s : (ID | ID ID?) ; +// +// When the [ATN] simulation reaches the state before ;, it has a [DFA] +// state that looks like: +// +// [12|1|[], 6|2|[], 12|2|[]]. +// +// Naturally +// +// 12|1|[] and 12|2|[] +// +// conflict, but we cannot stop processing this node +// because alternative to has another way to continue, via +// +// [6|2|[]]. +// +// The key is that we have a single state that has config's only associated +// with a single alternative, 2, and crucially the state transitions +// among the configurations are all non-epsilon transitions. That means +// we don't consider any conflicts that include alternative 2. So, we +// ignore the conflict between alts 1 and 2. We ignore a set of +// conflicting alts when there is an intersection with an alternative +// associated with a single alt state in the state config-list map. +// +// It's also the case that we might have two conflicting configurations but +// also a 3rd non-conflicting configuration for a different alternative: +// +// [1|1|[], 1|2|[], 8|3|[]]. +// +// This can come about from grammar: +// +// a : A | A | A B +// +// After Matching input A, we reach the stop state for rule A, state 1. +// State 8 is the state right before B. Clearly alternatives 1 and 2 +// conflict and no amount of further lookahead will separate the two. +// However, alternative 3 will be able to continue, so we do not +// stop working on this state. +// +// In the previous example, we're concerned +// with states associated with the conflicting alternatives. Here alt +// 3 is not associated with the conflicting configs, but since we can continue +// looking for input reasonably, I don't declare the state done. We +// ignore a set of conflicting alts when we have an alternative +// that we still need to pursue. +func (p *ParserATNSimulator) getConflictingAltsOrUniqueAlt(configs *ATNConfigSet) *BitSet { + var conflictingAlts *BitSet + if configs.uniqueAlt != ATNInvalidAltNumber { + conflictingAlts = NewBitSet() + conflictingAlts.add(configs.uniqueAlt) + } else { + conflictingAlts = configs.conflictingAlts + } + return conflictingAlts +} + +func (p *ParserATNSimulator) GetTokenName(t int) string { + if t == TokenEOF { + return "EOF" + } + + if p.parser != nil && p.parser.GetLiteralNames() != nil && t < len(p.parser.GetLiteralNames()) { + return p.parser.GetLiteralNames()[t] + "<" + strconv.Itoa(t) + ">" + } + + if p.parser != nil && p.parser.GetLiteralNames() != nil && t < len(p.parser.GetSymbolicNames()) { + return p.parser.GetSymbolicNames()[t] + "<" + strconv.Itoa(t) + ">" + } + + return strconv.Itoa(t) +} + +func (p *ParserATNSimulator) getLookaheadName(input TokenStream) string { + return p.GetTokenName(input.LA(1)) +} + +// Used for debugging in [AdaptivePredict] around [execATN], but I cut +// it out for clarity now that alg. works well. We can leave this +// "dead" code for a bit. +func (p *ParserATNSimulator) dumpDeadEndConfigs(_ *NoViableAltException) { + + panic("Not implemented") + + // fmt.Println("dead end configs: ") + // var decs = nvae.deadEndConfigs + // + // for i:=0; i0) { + // var t = c.state.GetTransitions()[0] + // if t2, ok := t.(*AtomTransition); ok { + // trans = "Atom "+ p.GetTokenName(t2.label) + // } else if t3, ok := t.(SetTransition); ok { + // _, ok := t.(*NotSetTransition) + // + // var s string + // if (ok){ + // s = "~" + // } + // + // trans = s + "Set " + t3.set + // } + // } + // fmt.Errorf(c.String(p.parser, true) + ":" + trans) + // } +} + +func (p *ParserATNSimulator) noViableAlt(input TokenStream, outerContext ParserRuleContext, configs *ATNConfigSet, startIndex int) *NoViableAltException { + return NewNoViableAltException(p.parser, input, input.Get(startIndex), input.LT(1), configs, outerContext) +} + +func (p *ParserATNSimulator) getUniqueAlt(configs *ATNConfigSet) int { + alt := ATNInvalidAltNumber + for _, c := range configs.configs { + if alt == ATNInvalidAltNumber { + alt = c.GetAlt() // found first alt + } else if c.GetAlt() != alt { + return ATNInvalidAltNumber + } + } + return alt +} + +// Add an edge to the DFA, if possible. This method calls +// {@link //addDFAState} to ensure the {@code to} state is present in the +// DFA. If {@code from} is {@code nil}, or if {@code t} is outside the +// range of edges that can be represented in the DFA tables, p method +// returns without adding the edge to the DFA. +// +//

If {@code to} is {@code nil}, p method returns {@code nil}. +// Otherwise, p method returns the {@link DFAState} returned by calling +// {@link //addDFAState} for the {@code to} state.

+// +// @param dfa The DFA +// @param from The source state for the edge +// @param t The input symbol +// @param to The target state for the edge +// +// @return If {@code to} is {@code nil}, p method returns {@code nil} +// otherwise p method returns the result of calling {@link //addDFAState} +// on {@code to} +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) addDFAEdge(dfa *DFA, from *DFAState, t int, to *DFAState) *DFAState { + if runtimeConfig.parserATNSimulatorDebug { + fmt.Println("EDGE " + from.String() + " -> " + to.String() + " upon " + p.GetTokenName(t)) + } + if to == nil { + return nil + } + p.atn.stateMu.Lock() + to = p.addDFAState(dfa, to) // used existing if possible not incoming + p.atn.stateMu.Unlock() + if from == nil || t < -1 || t > p.atn.maxTokenType { + return to + } + p.atn.edgeMu.Lock() + if from.getEdges() == nil { + from.setEdges(make([]*DFAState, p.atn.maxTokenType+1+1)) + } + from.setIthEdge(t+1, to) // connect + p.atn.edgeMu.Unlock() + + if runtimeConfig.parserATNSimulatorDebug { + var names []string + if p.parser != nil { + names = p.parser.GetLiteralNames() + } + + fmt.Println("DFA=\n" + dfa.String(names, nil)) + } + return to +} + +// addDFAState adds state D to the [DFA] if it is not already present, and returns +// the actual instance stored in the [DFA]. If a state equivalent to D +// is already in the [DFA], the existing state is returned. Otherwise, this +// method returns D after adding it to the [DFA]. +// +// If D is [ATNSimulatorError], this method returns [ATNSimulatorError] and +// does not change the DFA. +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) addDFAState(dfa *DFA, d *DFAState) *DFAState { + if d == ATNSimulatorError { + return d + } + + existing, present := dfa.Get(d) + if present { + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Print("addDFAState " + d.String() + " exists") + } + return existing + } + + // The state will be added if not already there or we will be given back the existing state struct + // if it is present. + // + d.stateNumber = dfa.Len() + if !d.configs.readOnly { + d.configs.OptimizeConfigs(&p.BaseATNSimulator) + d.configs.readOnly = true + d.configs.configLookup = nil + } + dfa.Put(d) + + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("addDFAState new " + d.String()) + } + + return d +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) ReportAttemptingFullContext(dfa *DFA, conflictingAlts *BitSet, configs *ATNConfigSet, startIndex, stopIndex int) { + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorRetryDebug { + interval := NewInterval(startIndex, stopIndex+1) + fmt.Println("ReportAttemptingFullContext decision=" + strconv.Itoa(dfa.decision) + ":" + configs.String() + + ", input=" + p.parser.GetTokenStream().GetTextFromInterval(interval)) + } + if p.parser != nil { + p.parser.GetErrorListenerDispatch().ReportAttemptingFullContext(p.parser, dfa, startIndex, stopIndex, conflictingAlts, configs) + } +} + +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) ReportContextSensitivity(dfa *DFA, prediction int, configs *ATNConfigSet, startIndex, stopIndex int) { + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorRetryDebug { + interval := NewInterval(startIndex, stopIndex+1) + fmt.Println("ReportContextSensitivity decision=" + strconv.Itoa(dfa.decision) + ":" + configs.String() + + ", input=" + p.parser.GetTokenStream().GetTextFromInterval(interval)) + } + if p.parser != nil { + p.parser.GetErrorListenerDispatch().ReportContextSensitivity(p.parser, dfa, startIndex, stopIndex, prediction, configs) + } +} + +// ReportAmbiguity reports and ambiguity in the parse, which shows that the parser will explore a different route. +// +// If context-sensitive parsing, we know it's an ambiguity not a conflict or error, but we can report it to the developer +// so that they can see that this is happening and can take action if they want to. +// +//goland:noinspection GoBoolExpressions +func (p *ParserATNSimulator) ReportAmbiguity(dfa *DFA, _ *DFAState, startIndex, stopIndex int, + exact bool, ambigAlts *BitSet, configs *ATNConfigSet) { + if runtimeConfig.parserATNSimulatorDebug || runtimeConfig.parserATNSimulatorRetryDebug { + interval := NewInterval(startIndex, stopIndex+1) + fmt.Println("ReportAmbiguity " + ambigAlts.String() + ":" + configs.String() + + ", input=" + p.parser.GetTokenStream().GetTextFromInterval(interval)) + } + if p.parser != nil { + p.parser.GetErrorListenerDispatch().ReportAmbiguity(p.parser, dfa, startIndex, stopIndex, exact, ambigAlts, configs) + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/parser_rule_context.go b/vendor/github.com/antlr4-go/antlr/v4/parser_rule_context.go new file mode 100644 index 0000000000..c249bc1385 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/parser_rule_context.go @@ -0,0 +1,421 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "reflect" + "strconv" +) + +type ParserRuleContext interface { + RuleContext + + SetException(RecognitionException) + + AddTokenNode(token Token) *TerminalNodeImpl + AddErrorNode(badToken Token) *ErrorNodeImpl + + EnterRule(listener ParseTreeListener) + ExitRule(listener ParseTreeListener) + + SetStart(Token) + GetStart() Token + + SetStop(Token) + GetStop() Token + + AddChild(child RuleContext) RuleContext + RemoveLastChild() +} + +type BaseParserRuleContext struct { + parentCtx RuleContext + invokingState int + RuleIndex int + + start, stop Token + exception RecognitionException + children []Tree +} + +func NewBaseParserRuleContext(parent ParserRuleContext, invokingStateNumber int) *BaseParserRuleContext { + prc := new(BaseParserRuleContext) + InitBaseParserRuleContext(prc, parent, invokingStateNumber) + return prc +} + +func InitBaseParserRuleContext(prc *BaseParserRuleContext, parent ParserRuleContext, invokingStateNumber int) { + // What context invoked b rule? + prc.parentCtx = parent + + // What state invoked the rule associated with b context? + // The "return address" is the followState of invokingState + // If parent is nil, b should be -1. + if parent == nil { + prc.invokingState = -1 + } else { + prc.invokingState = invokingStateNumber + } + + prc.RuleIndex = -1 + // * If we are debugging or building a parse tree for a Visitor, + // we need to track all of the tokens and rule invocations associated + // with prc rule's context. This is empty for parsing w/o tree constr. + // operation because we don't the need to track the details about + // how we parse prc rule. + // / + prc.children = nil + prc.start = nil + prc.stop = nil + // The exception that forced prc rule to return. If the rule successfully + // completed, prc is {@code nil}. + prc.exception = nil +} + +func (prc *BaseParserRuleContext) SetException(e RecognitionException) { + prc.exception = e +} + +func (prc *BaseParserRuleContext) GetChildren() []Tree { + return prc.children +} + +func (prc *BaseParserRuleContext) CopyFrom(ctx *BaseParserRuleContext) { + // from RuleContext + prc.parentCtx = ctx.parentCtx + prc.invokingState = ctx.invokingState + prc.children = nil + prc.start = ctx.start + prc.stop = ctx.stop +} + +func (prc *BaseParserRuleContext) GetText() string { + if prc.GetChildCount() == 0 { + return "" + } + + var s string + for _, child := range prc.children { + s += child.(ParseTree).GetText() + } + + return s +} + +// EnterRule is called when any rule is entered. +func (prc *BaseParserRuleContext) EnterRule(_ ParseTreeListener) { +} + +// ExitRule is called when any rule is exited. +func (prc *BaseParserRuleContext) ExitRule(_ ParseTreeListener) { +} + +// * Does not set parent link other add methods do that +func (prc *BaseParserRuleContext) addTerminalNodeChild(child TerminalNode) TerminalNode { + if prc.children == nil { + prc.children = make([]Tree, 0) + } + if child == nil { + panic("Child may not be null") + } + prc.children = append(prc.children, child) + return child +} + +func (prc *BaseParserRuleContext) AddChild(child RuleContext) RuleContext { + if prc.children == nil { + prc.children = make([]Tree, 0) + } + if child == nil { + panic("Child may not be null") + } + prc.children = append(prc.children, child) + return child +} + +// RemoveLastChild is used by [EnterOuterAlt] to toss out a [RuleContext] previously added as +// we entered a rule. If we have a label, we will need to remove +// the generic ruleContext object. +func (prc *BaseParserRuleContext) RemoveLastChild() { + if prc.children != nil && len(prc.children) > 0 { + prc.children = prc.children[0 : len(prc.children)-1] + } +} + +func (prc *BaseParserRuleContext) AddTokenNode(token Token) *TerminalNodeImpl { + + node := NewTerminalNodeImpl(token) + prc.addTerminalNodeChild(node) + node.parentCtx = prc + return node + +} + +func (prc *BaseParserRuleContext) AddErrorNode(badToken Token) *ErrorNodeImpl { + node := NewErrorNodeImpl(badToken) + prc.addTerminalNodeChild(node) + node.parentCtx = prc + return node +} + +func (prc *BaseParserRuleContext) GetChild(i int) Tree { + if prc.children != nil && len(prc.children) >= i { + return prc.children[i] + } + + return nil +} + +func (prc *BaseParserRuleContext) GetChildOfType(i int, childType reflect.Type) RuleContext { + if childType == nil { + return prc.GetChild(i).(RuleContext) + } + + for j := 0; j < len(prc.children); j++ { + child := prc.children[j] + if reflect.TypeOf(child) == childType { + if i == 0 { + return child.(RuleContext) + } + + i-- + } + } + + return nil +} + +func (prc *BaseParserRuleContext) ToStringTree(ruleNames []string, recog Recognizer) string { + return TreesStringTree(prc, ruleNames, recog) +} + +func (prc *BaseParserRuleContext) GetRuleContext() RuleContext { + return prc +} + +func (prc *BaseParserRuleContext) Accept(visitor ParseTreeVisitor) interface{} { + return visitor.VisitChildren(prc) +} + +func (prc *BaseParserRuleContext) SetStart(t Token) { + prc.start = t +} + +func (prc *BaseParserRuleContext) GetStart() Token { + return prc.start +} + +func (prc *BaseParserRuleContext) SetStop(t Token) { + prc.stop = t +} + +func (prc *BaseParserRuleContext) GetStop() Token { + return prc.stop +} + +func (prc *BaseParserRuleContext) GetToken(ttype int, i int) TerminalNode { + + for j := 0; j < len(prc.children); j++ { + child := prc.children[j] + if c2, ok := child.(TerminalNode); ok { + if c2.GetSymbol().GetTokenType() == ttype { + if i == 0 { + return c2 + } + + i-- + } + } + } + return nil +} + +func (prc *BaseParserRuleContext) GetTokens(ttype int) []TerminalNode { + if prc.children == nil { + return make([]TerminalNode, 0) + } + + tokens := make([]TerminalNode, 0) + + for j := 0; j < len(prc.children); j++ { + child := prc.children[j] + if tchild, ok := child.(TerminalNode); ok { + if tchild.GetSymbol().GetTokenType() == ttype { + tokens = append(tokens, tchild) + } + } + } + + return tokens +} + +func (prc *BaseParserRuleContext) GetPayload() interface{} { + return prc +} + +func (prc *BaseParserRuleContext) getChild(ctxType reflect.Type, i int) RuleContext { + if prc.children == nil || i < 0 || i >= len(prc.children) { + return nil + } + + j := -1 // what element have we found with ctxType? + for _, o := range prc.children { + + childType := reflect.TypeOf(o) + + if childType.Implements(ctxType) { + j++ + if j == i { + return o.(RuleContext) + } + } + } + return nil +} + +// Go lacks generics, so it's not possible for us to return the child with the correct type, but we do +// check for convertibility + +func (prc *BaseParserRuleContext) GetTypedRuleContext(ctxType reflect.Type, i int) RuleContext { + return prc.getChild(ctxType, i) +} + +func (prc *BaseParserRuleContext) GetTypedRuleContexts(ctxType reflect.Type) []RuleContext { + if prc.children == nil { + return make([]RuleContext, 0) + } + + contexts := make([]RuleContext, 0) + + for _, child := range prc.children { + childType := reflect.TypeOf(child) + + if childType.ConvertibleTo(ctxType) { + contexts = append(contexts, child.(RuleContext)) + } + } + return contexts +} + +func (prc *BaseParserRuleContext) GetChildCount() int { + if prc.children == nil { + return 0 + } + + return len(prc.children) +} + +func (prc *BaseParserRuleContext) GetSourceInterval() Interval { + if prc.start == nil || prc.stop == nil { + return TreeInvalidInterval + } + + return NewInterval(prc.start.GetTokenIndex(), prc.stop.GetTokenIndex()) +} + +//need to manage circular dependencies, so export now + +// Print out a whole tree, not just a node, in LISP format +// (root child1 .. childN). Print just a node if b is a leaf. +// + +func (prc *BaseParserRuleContext) String(ruleNames []string, stop RuleContext) string { + + var p ParserRuleContext = prc + s := "[" + for p != nil && p != stop { + if ruleNames == nil { + if !p.IsEmpty() { + s += strconv.Itoa(p.GetInvokingState()) + } + } else { + ri := p.GetRuleIndex() + var ruleName string + if ri >= 0 && ri < len(ruleNames) { + ruleName = ruleNames[ri] + } else { + ruleName = strconv.Itoa(ri) + } + s += ruleName + } + if p.GetParent() != nil && (ruleNames != nil || !p.GetParent().(ParserRuleContext).IsEmpty()) { + s += " " + } + pi := p.GetParent() + if pi != nil { + p = pi.(ParserRuleContext) + } else { + p = nil + } + } + s += "]" + return s +} + +func (prc *BaseParserRuleContext) SetParent(v Tree) { + if v == nil { + prc.parentCtx = nil + } else { + prc.parentCtx = v.(RuleContext) + } +} + +func (prc *BaseParserRuleContext) GetInvokingState() int { + return prc.invokingState +} + +func (prc *BaseParserRuleContext) SetInvokingState(t int) { + prc.invokingState = t +} + +func (prc *BaseParserRuleContext) GetRuleIndex() int { + return prc.RuleIndex +} + +func (prc *BaseParserRuleContext) GetAltNumber() int { + return ATNInvalidAltNumber +} + +func (prc *BaseParserRuleContext) SetAltNumber(_ int) {} + +// IsEmpty returns true if the context of b is empty. +// +// A context is empty if there is no invoking state, meaning nobody calls +// current context. +func (prc *BaseParserRuleContext) IsEmpty() bool { + return prc.invokingState == -1 +} + +// GetParent returns the combined text of all child nodes. This method only considers +// tokens which have been added to the parse tree. +// +// Since tokens on hidden channels (e.g. whitespace or comments) are not +// added to the parse trees, they will not appear in the output of this +// method. +func (prc *BaseParserRuleContext) GetParent() Tree { + return prc.parentCtx +} + +var ParserRuleContextEmpty = NewBaseParserRuleContext(nil, -1) + +type InterpreterRuleContext interface { + ParserRuleContext +} + +type BaseInterpreterRuleContext struct { + *BaseParserRuleContext +} + +//goland:noinspection GoUnusedExportedFunction +func NewBaseInterpreterRuleContext(parent BaseInterpreterRuleContext, invokingStateNumber, ruleIndex int) *BaseInterpreterRuleContext { + + prc := new(BaseInterpreterRuleContext) + + prc.BaseParserRuleContext = NewBaseParserRuleContext(parent, invokingStateNumber) + + prc.RuleIndex = ruleIndex + + return prc +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/prediction_context.go b/vendor/github.com/antlr4-go/antlr/v4/prediction_context.go new file mode 100644 index 0000000000..c1b80cc1f0 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/prediction_context.go @@ -0,0 +1,727 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "golang.org/x/exp/slices" + "strconv" +) + +var _emptyPredictionContextHash int + +func init() { + _emptyPredictionContextHash = murmurInit(1) + _emptyPredictionContextHash = murmurFinish(_emptyPredictionContextHash, 0) +} + +func calculateEmptyHash() int { + return _emptyPredictionContextHash +} + +const ( + // BasePredictionContextEmptyReturnState represents {@code $} in an array in full context mode, $ + // doesn't mean wildcard: + // + // $ + x = [$,x] + // + // Here, + // + // $ = EmptyReturnState + BasePredictionContextEmptyReturnState = 0x7FFFFFFF +) + +// TODO: JI These are meant to be atomics - this does not seem to match the Java runtime here +// +//goland:noinspection GoUnusedGlobalVariable +var ( + BasePredictionContextglobalNodeCount = 1 + BasePredictionContextid = BasePredictionContextglobalNodeCount +) + +const ( + PredictionContextEmpty = iota + PredictionContextSingleton + PredictionContextArray +) + +// PredictionContext is a go idiomatic implementation of PredictionContext that does not rty to +// emulate inheritance from Java, and can be used without an interface definition. An interface +// is not required because no user code will ever need to implement this interface. +type PredictionContext struct { + cachedHash int + pcType int + parentCtx *PredictionContext + returnState int + parents []*PredictionContext + returnStates []int +} + +func NewEmptyPredictionContext() *PredictionContext { + nep := &PredictionContext{} + nep.cachedHash = calculateEmptyHash() + nep.pcType = PredictionContextEmpty + nep.returnState = BasePredictionContextEmptyReturnState + return nep +} + +func NewBaseSingletonPredictionContext(parent *PredictionContext, returnState int) *PredictionContext { + pc := &PredictionContext{} + pc.pcType = PredictionContextSingleton + pc.returnState = returnState + pc.parentCtx = parent + if parent != nil { + pc.cachedHash = calculateHash(parent, returnState) + } else { + pc.cachedHash = calculateEmptyHash() + } + return pc +} + +func SingletonBasePredictionContextCreate(parent *PredictionContext, returnState int) *PredictionContext { + if returnState == BasePredictionContextEmptyReturnState && parent == nil { + // someone can pass in the bits of an array ctx that mean $ + return BasePredictionContextEMPTY + } + return NewBaseSingletonPredictionContext(parent, returnState) +} + +func NewArrayPredictionContext(parents []*PredictionContext, returnStates []int) *PredictionContext { + // Parent can be nil only if full ctx mode and we make an array + // from {@link //EMPTY} and non-empty. We merge {@link //EMPTY} by using + // nil parent and + // returnState == {@link //EmptyReturnState}. + hash := murmurInit(1) + for _, parent := range parents { + hash = murmurUpdate(hash, parent.Hash()) + } + for _, returnState := range returnStates { + hash = murmurUpdate(hash, returnState) + } + hash = murmurFinish(hash, len(parents)<<1) + + nec := &PredictionContext{} + nec.cachedHash = hash + nec.pcType = PredictionContextArray + nec.parents = parents + nec.returnStates = returnStates + return nec +} + +func (p *PredictionContext) Hash() int { + return p.cachedHash +} + +func (p *PredictionContext) Equals(other Collectable[*PredictionContext]) bool { + switch p.pcType { + case PredictionContextEmpty: + otherP := other.(*PredictionContext) + return other == nil || otherP == nil || otherP.isEmpty() + case PredictionContextSingleton: + return p.SingletonEquals(other) + case PredictionContextArray: + return p.ArrayEquals(other) + } + return false +} + +func (p *PredictionContext) ArrayEquals(o Collectable[*PredictionContext]) bool { + if o == nil { + return false + } + other := o.(*PredictionContext) + if other == nil || other.pcType != PredictionContextArray { + return false + } + if p.cachedHash != other.Hash() { + return false // can't be same if hash is different + } + + // Must compare the actual array elements and not just the array address + // + return slices.Equal(p.returnStates, other.returnStates) && + slices.EqualFunc(p.parents, other.parents, func(x, y *PredictionContext) bool { + return x.Equals(y) + }) +} + +func (p *PredictionContext) SingletonEquals(other Collectable[*PredictionContext]) bool { + if other == nil { + return false + } + otherP := other.(*PredictionContext) + if otherP == nil { + return false + } + + if p.cachedHash != otherP.Hash() { + return false // Can't be same if hash is different + } + + if p.returnState != otherP.getReturnState(0) { + return false + } + + // Both parents must be nil if one is + if p.parentCtx == nil { + return otherP.parentCtx == nil + } + + return p.parentCtx.Equals(otherP.parentCtx) +} + +func (p *PredictionContext) GetParent(i int) *PredictionContext { + switch p.pcType { + case PredictionContextEmpty: + return nil + case PredictionContextSingleton: + return p.parentCtx + case PredictionContextArray: + return p.parents[i] + } + return nil +} + +func (p *PredictionContext) getReturnState(i int) int { + switch p.pcType { + case PredictionContextArray: + return p.returnStates[i] + default: + return p.returnState + } +} + +func (p *PredictionContext) GetReturnStates() []int { + switch p.pcType { + case PredictionContextArray: + return p.returnStates + default: + return []int{p.returnState} + } +} + +func (p *PredictionContext) length() int { + switch p.pcType { + case PredictionContextArray: + return len(p.returnStates) + default: + return 1 + } +} + +func (p *PredictionContext) hasEmptyPath() bool { + switch p.pcType { + case PredictionContextSingleton: + return p.returnState == BasePredictionContextEmptyReturnState + } + return p.getReturnState(p.length()-1) == BasePredictionContextEmptyReturnState +} + +func (p *PredictionContext) String() string { + switch p.pcType { + case PredictionContextEmpty: + return "$" + case PredictionContextSingleton: + var up string + + if p.parentCtx == nil { + up = "" + } else { + up = p.parentCtx.String() + } + + if len(up) == 0 { + if p.returnState == BasePredictionContextEmptyReturnState { + return "$" + } + + return strconv.Itoa(p.returnState) + } + + return strconv.Itoa(p.returnState) + " " + up + case PredictionContextArray: + if p.isEmpty() { + return "[]" + } + + s := "[" + for i := 0; i < len(p.returnStates); i++ { + if i > 0 { + s = s + ", " + } + if p.returnStates[i] == BasePredictionContextEmptyReturnState { + s = s + "$" + continue + } + s = s + strconv.Itoa(p.returnStates[i]) + if !p.parents[i].isEmpty() { + s = s + " " + p.parents[i].String() + } else { + s = s + "nil" + } + } + return s + "]" + + default: + return "unknown" + } +} + +func (p *PredictionContext) isEmpty() bool { + switch p.pcType { + case PredictionContextEmpty: + return true + case PredictionContextArray: + // since EmptyReturnState can only appear in the last position, we + // don't need to verify that size==1 + return p.returnStates[0] == BasePredictionContextEmptyReturnState + default: + return false + } +} + +func (p *PredictionContext) Type() int { + return p.pcType +} + +func calculateHash(parent *PredictionContext, returnState int) int { + h := murmurInit(1) + h = murmurUpdate(h, parent.Hash()) + h = murmurUpdate(h, returnState) + return murmurFinish(h, 2) +} + +// Convert a {@link RuleContext} tree to a {@link BasePredictionContext} graph. +// Return {@link //EMPTY} if {@code outerContext} is empty or nil. +// / +func predictionContextFromRuleContext(a *ATN, outerContext RuleContext) *PredictionContext { + if outerContext == nil { + outerContext = ParserRuleContextEmpty + } + // if we are in RuleContext of start rule, s, then BasePredictionContext + // is EMPTY. Nobody called us. (if we are empty, return empty) + if outerContext.GetParent() == nil || outerContext == ParserRuleContextEmpty { + return BasePredictionContextEMPTY + } + // If we have a parent, convert it to a BasePredictionContext graph + parent := predictionContextFromRuleContext(a, outerContext.GetParent().(RuleContext)) + state := a.states[outerContext.GetInvokingState()] + transition := state.GetTransitions()[0] + + return SingletonBasePredictionContextCreate(parent, transition.(*RuleTransition).followState.GetStateNumber()) +} + +func merge(a, b *PredictionContext, rootIsWildcard bool, mergeCache *JPCMap) *PredictionContext { + + // Share same graph if both same + // + if a == b || a.Equals(b) { + return a + } + + if a.pcType == PredictionContextSingleton && b.pcType == PredictionContextSingleton { + return mergeSingletons(a, b, rootIsWildcard, mergeCache) + } + // At least one of a or b is array + // If one is $ and rootIsWildcard, return $ as wildcard + if rootIsWildcard { + if a.isEmpty() { + return a + } + if b.isEmpty() { + return b + } + } + + // Convert either Singleton or Empty to arrays, so that we can merge them + // + ara := convertToArray(a) + arb := convertToArray(b) + return mergeArrays(ara, arb, rootIsWildcard, mergeCache) +} + +func convertToArray(pc *PredictionContext) *PredictionContext { + switch pc.Type() { + case PredictionContextEmpty: + return NewArrayPredictionContext([]*PredictionContext{}, []int{}) + case PredictionContextSingleton: + return NewArrayPredictionContext([]*PredictionContext{pc.GetParent(0)}, []int{pc.getReturnState(0)}) + default: + // Already an array + } + return pc +} + +// mergeSingletons merges two Singleton [PredictionContext] instances. +// +// Stack tops equal, parents merge is same return left graph. +//

+// +//

Same stack top, parents differ merge parents giving array node, then +// remainders of those graphs. A new root node is created to point to the +// merged parents.
+//

+// +//

Different stack tops pointing to same parent. Make array node for the +// root where both element in the root point to the same (original) +// parent.
+//

+// +//

Different stack tops pointing to different parents. Make array node for +// the root where each element points to the corresponding original +// parent.
+//

+// +// @param a the first {@link SingletonBasePredictionContext} +// @param b the second {@link SingletonBasePredictionContext} +// @param rootIsWildcard {@code true} if this is a local-context merge, +// otherwise false to indicate a full-context merge +// @param mergeCache +// / +func mergeSingletons(a, b *PredictionContext, rootIsWildcard bool, mergeCache *JPCMap) *PredictionContext { + if mergeCache != nil { + previous, present := mergeCache.Get(a, b) + if present { + return previous + } + previous, present = mergeCache.Get(b, a) + if present { + return previous + } + } + + rootMerge := mergeRoot(a, b, rootIsWildcard) + if rootMerge != nil { + if mergeCache != nil { + mergeCache.Put(a, b, rootMerge) + } + return rootMerge + } + if a.returnState == b.returnState { + parent := merge(a.parentCtx, b.parentCtx, rootIsWildcard, mergeCache) + // if parent is same as existing a or b parent or reduced to a parent, + // return it + if parent.Equals(a.parentCtx) { + return a // ax + bx = ax, if a=b + } + if parent.Equals(b.parentCtx) { + return b // ax + bx = bx, if a=b + } + // else: ax + ay = a'[x,y] + // merge parents x and y, giving array node with x,y then remainders + // of those graphs. dup a, a' points at merged array. + // New joined parent so create a new singleton pointing to it, a' + spc := SingletonBasePredictionContextCreate(parent, a.returnState) + if mergeCache != nil { + mergeCache.Put(a, b, spc) + } + return spc + } + // a != b payloads differ + // see if we can collapse parents due to $+x parents if local ctx + var singleParent *PredictionContext + if a.Equals(b) || (a.parentCtx != nil && a.parentCtx.Equals(b.parentCtx)) { // ax + + // bx = + // [a,b]x + singleParent = a.parentCtx + } + if singleParent != nil { // parents are same + // sort payloads and use same parent + payloads := []int{a.returnState, b.returnState} + if a.returnState > b.returnState { + payloads[0] = b.returnState + payloads[1] = a.returnState + } + parents := []*PredictionContext{singleParent, singleParent} + apc := NewArrayPredictionContext(parents, payloads) + if mergeCache != nil { + mergeCache.Put(a, b, apc) + } + return apc + } + // parents differ and can't merge them. Just pack together + // into array can't merge. + // ax + by = [ax,by] + payloads := []int{a.returnState, b.returnState} + parents := []*PredictionContext{a.parentCtx, b.parentCtx} + if a.returnState > b.returnState { // sort by payload + payloads[0] = b.returnState + payloads[1] = a.returnState + parents = []*PredictionContext{b.parentCtx, a.parentCtx} + } + apc := NewArrayPredictionContext(parents, payloads) + if mergeCache != nil { + mergeCache.Put(a, b, apc) + } + return apc +} + +// Handle case where at least one of {@code a} or {@code b} is +// {@link //EMPTY}. In the following diagrams, the symbol {@code $} is used +// to represent {@link //EMPTY}. +// +//

Local-Context Merges

+// +//

These local-context merge operations are used when {@code rootIsWildcard} +// is true.

+// +//

{@link //EMPTY} is superset of any graph return {@link //EMPTY}.
+//

+// +//

{@link //EMPTY} and anything is {@code //EMPTY}, so merged parent is +// {@code //EMPTY} return left graph.
+//

+// +//

Special case of last merge if local context.
+//

+// +//

Full-Context Merges

+// +//

These full-context merge operations are used when {@code rootIsWildcard} +// is false.

+// +//

+// +//

Must keep all contexts {@link //EMPTY} in array is a special value (and +// nil parent).
+//

+// +//

+// +// @param a the first {@link SingletonBasePredictionContext} +// @param b the second {@link SingletonBasePredictionContext} +// @param rootIsWildcard {@code true} if this is a local-context merge, +// otherwise false to indicate a full-context merge +// / +func mergeRoot(a, b *PredictionContext, rootIsWildcard bool) *PredictionContext { + if rootIsWildcard { + if a.pcType == PredictionContextEmpty { + return BasePredictionContextEMPTY // // + b =// + } + if b.pcType == PredictionContextEmpty { + return BasePredictionContextEMPTY // a +// =// + } + } else { + if a.isEmpty() && b.isEmpty() { + return BasePredictionContextEMPTY // $ + $ = $ + } else if a.isEmpty() { // $ + x = [$,x] + payloads := []int{b.getReturnState(-1), BasePredictionContextEmptyReturnState} + parents := []*PredictionContext{b.GetParent(-1), nil} + return NewArrayPredictionContext(parents, payloads) + } else if b.isEmpty() { // x + $ = [$,x] ($ is always first if present) + payloads := []int{a.getReturnState(-1), BasePredictionContextEmptyReturnState} + parents := []*PredictionContext{a.GetParent(-1), nil} + return NewArrayPredictionContext(parents, payloads) + } + } + return nil +} + +// Merge two {@link ArrayBasePredictionContext} instances. +// +//

Different tops, different parents.
+//

+// +//

Shared top, same parents.
+//

+// +//

Shared top, different parents.
+//

+// +//

Shared top, all shared parents.
+//

+// +//

Equal tops, merge parents and reduce top to +// {@link SingletonBasePredictionContext}.
+//

+// +//goland:noinspection GoBoolExpressions +func mergeArrays(a, b *PredictionContext, rootIsWildcard bool, mergeCache *JPCMap) *PredictionContext { + if mergeCache != nil { + previous, present := mergeCache.Get(a, b) + if present { + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("mergeArrays a=" + a.String() + ",b=" + b.String() + " -> previous") + } + return previous + } + previous, present = mergeCache.Get(b, a) + if present { + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("mergeArrays a=" + a.String() + ",b=" + b.String() + " -> previous") + } + return previous + } + } + // merge sorted payloads a + b => M + i := 0 // walks a + j := 0 // walks b + k := 0 // walks target M array + + mergedReturnStates := make([]int, len(a.returnStates)+len(b.returnStates)) + mergedParents := make([]*PredictionContext, len(a.returnStates)+len(b.returnStates)) + // walk and merge to yield mergedParents, mergedReturnStates + for i < len(a.returnStates) && j < len(b.returnStates) { + aParent := a.parents[i] + bParent := b.parents[j] + if a.returnStates[i] == b.returnStates[j] { + // same payload (stack tops are equal), must yield merged singleton + payload := a.returnStates[i] + // $+$ = $ + bothDollars := payload == BasePredictionContextEmptyReturnState && aParent == nil && bParent == nil + axAX := aParent != nil && bParent != nil && aParent.Equals(bParent) // ax+ax + // -> + // ax + if bothDollars || axAX { + mergedParents[k] = aParent // choose left + mergedReturnStates[k] = payload + } else { // ax+ay -> a'[x,y] + mergedParent := merge(aParent, bParent, rootIsWildcard, mergeCache) + mergedParents[k] = mergedParent + mergedReturnStates[k] = payload + } + i++ // hop over left one as usual + j++ // but also Skip one in right side since we merge + } else if a.returnStates[i] < b.returnStates[j] { // copy a[i] to M + mergedParents[k] = aParent + mergedReturnStates[k] = a.returnStates[i] + i++ + } else { // b > a, copy b[j] to M + mergedParents[k] = bParent + mergedReturnStates[k] = b.returnStates[j] + j++ + } + k++ + } + // copy over any payloads remaining in either array + if i < len(a.returnStates) { + for p := i; p < len(a.returnStates); p++ { + mergedParents[k] = a.parents[p] + mergedReturnStates[k] = a.returnStates[p] + k++ + } + } else { + for p := j; p < len(b.returnStates); p++ { + mergedParents[k] = b.parents[p] + mergedReturnStates[k] = b.returnStates[p] + k++ + } + } + // trim merged if we combined a few that had same stack tops + if k < len(mergedParents) { // write index < last position trim + if k == 1 { // for just one merged element, return singleton top + pc := SingletonBasePredictionContextCreate(mergedParents[0], mergedReturnStates[0]) + if mergeCache != nil { + mergeCache.Put(a, b, pc) + } + return pc + } + mergedParents = mergedParents[0:k] + mergedReturnStates = mergedReturnStates[0:k] + } + + M := NewArrayPredictionContext(mergedParents, mergedReturnStates) + + // if we created same array as a or b, return that instead + // TODO: JI track whether this is possible above during merge sort for speed and possibly avoid an allocation + if M.Equals(a) { + if mergeCache != nil { + mergeCache.Put(a, b, a) + } + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("mergeArrays a=" + a.String() + ",b=" + b.String() + " -> a") + } + return a + } + if M.Equals(b) { + if mergeCache != nil { + mergeCache.Put(a, b, b) + } + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("mergeArrays a=" + a.String() + ",b=" + b.String() + " -> b") + } + return b + } + combineCommonParents(&mergedParents) + + if mergeCache != nil { + mergeCache.Put(a, b, M) + } + if runtimeConfig.parserATNSimulatorTraceATNSim { + fmt.Println("mergeArrays a=" + a.String() + ",b=" + b.String() + " -> " + M.String()) + } + return M +} + +// Make pass over all M parents and merge any Equals() ones. +// Note that we pass a pointer to the slice as we want to modify it in place. +// +//goland:noinspection GoUnusedFunction +func combineCommonParents(parents *[]*PredictionContext) { + uniqueParents := NewJStore[*PredictionContext, Comparator[*PredictionContext]](pContextEqInst, PredictionContextCollection, "combineCommonParents for PredictionContext") + + for p := 0; p < len(*parents); p++ { + parent := (*parents)[p] + _, _ = uniqueParents.Put(parent) + } + for q := 0; q < len(*parents); q++ { + pc, _ := uniqueParents.Get((*parents)[q]) + (*parents)[q] = pc + } +} + +func getCachedBasePredictionContext(context *PredictionContext, contextCache *PredictionContextCache, visited *VisitRecord) *PredictionContext { + if context.isEmpty() { + return context + } + existing, present := visited.Get(context) + if present { + return existing + } + + existing, present = contextCache.Get(context) + if present { + visited.Put(context, existing) + return existing + } + changed := false + parents := make([]*PredictionContext, context.length()) + for i := 0; i < len(parents); i++ { + parent := getCachedBasePredictionContext(context.GetParent(i), contextCache, visited) + if changed || !parent.Equals(context.GetParent(i)) { + if !changed { + parents = make([]*PredictionContext, context.length()) + for j := 0; j < context.length(); j++ { + parents[j] = context.GetParent(j) + } + changed = true + } + parents[i] = parent + } + } + if !changed { + contextCache.add(context) + visited.Put(context, context) + return context + } + var updated *PredictionContext + if len(parents) == 0 { + updated = BasePredictionContextEMPTY + } else if len(parents) == 1 { + updated = SingletonBasePredictionContextCreate(parents[0], context.getReturnState(0)) + } else { + updated = NewArrayPredictionContext(parents, context.GetReturnStates()) + } + contextCache.add(updated) + visited.Put(updated, updated) + visited.Put(context, updated) + + return updated +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/prediction_context_cache.go b/vendor/github.com/antlr4-go/antlr/v4/prediction_context_cache.go new file mode 100644 index 0000000000..25dfb11e8f --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/prediction_context_cache.go @@ -0,0 +1,48 @@ +package antlr + +var BasePredictionContextEMPTY = &PredictionContext{ + cachedHash: calculateEmptyHash(), + pcType: PredictionContextEmpty, + returnState: BasePredictionContextEmptyReturnState, +} + +// PredictionContextCache is Used to cache [PredictionContext] objects. It is used for the shared +// context cash associated with contexts in DFA states. This cache +// can be used for both lexers and parsers. +type PredictionContextCache struct { + cache *JMap[*PredictionContext, *PredictionContext, Comparator[*PredictionContext]] +} + +func NewPredictionContextCache() *PredictionContextCache { + return &PredictionContextCache{ + cache: NewJMap[*PredictionContext, *PredictionContext, Comparator[*PredictionContext]](pContextEqInst, PredictionContextCacheCollection, "NewPredictionContextCache()"), + } +} + +// Add a context to the cache and return it. If the context already exists, +// return that one instead and do not add a new context to the cache. +// Protect shared cache from unsafe thread access. +func (p *PredictionContextCache) add(ctx *PredictionContext) *PredictionContext { + if ctx.isEmpty() { + return BasePredictionContextEMPTY + } + + // Put will return the existing entry if it is present (note this is done via Equals, not whether it is + // the same pointer), otherwise it will add the new entry and return that. + // + existing, present := p.cache.Get(ctx) + if present { + return existing + } + p.cache.Put(ctx, ctx) + return ctx +} + +func (p *PredictionContextCache) Get(ctx *PredictionContext) (*PredictionContext, bool) { + pc, exists := p.cache.Get(ctx) + return pc, exists +} + +func (p *PredictionContextCache) length() int { + return p.cache.Len() +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/prediction_mode.go b/vendor/github.com/antlr4-go/antlr/v4/prediction_mode.go new file mode 100644 index 0000000000..3f85a6a520 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/prediction_mode.go @@ -0,0 +1,536 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// This enumeration defines the prediction modes available in ANTLR 4 along with +// utility methods for analyzing configuration sets for conflicts and/or +// ambiguities. + +const ( + // PredictionModeSLL represents the SLL(*) prediction mode. + // This prediction mode ignores the current + // parser context when making predictions. This is the fastest prediction + // mode, and provides correct results for many grammars. This prediction + // mode is more powerful than the prediction mode provided by ANTLR 3, but + // may result in syntax errors for grammar and input combinations which are + // not SLL. + // + // When using this prediction mode, the parser will either return a correct + // parse tree (i.e. the same parse tree that would be returned with the + // [PredictionModeLL] prediction mode), or it will Report a syntax error. If a + // syntax error is encountered when using the SLL prediction mode, + // it may be due to either an actual syntax error in the input or indicate + // that the particular combination of grammar and input requires the more + // powerful LL prediction abilities to complete successfully. + // + // This prediction mode does not provide any guarantees for prediction + // behavior for syntactically-incorrect inputs. + // + PredictionModeSLL = 0 + + // PredictionModeLL represents the LL(*) prediction mode. + // This prediction mode allows the current parser + // context to be used for resolving SLL conflicts that occur during + // prediction. This is the fastest prediction mode that guarantees correct + // parse results for all combinations of grammars with syntactically correct + // inputs. + // + // When using this prediction mode, the parser will make correct decisions + // for all syntactically-correct grammar and input combinations. However, in + // cases where the grammar is truly ambiguous this prediction mode might not + // report a precise answer for exactly which alternatives are + // ambiguous. + // + // This prediction mode does not provide any guarantees for prediction + // behavior for syntactically-incorrect inputs. + // + PredictionModeLL = 1 + + // PredictionModeLLExactAmbigDetection represents the LL(*) prediction mode + // with exact ambiguity detection. + // + // In addition to the correctness guarantees provided by the [PredictionModeLL] prediction mode, + // this prediction mode instructs the prediction algorithm to determine the + // complete and exact set of ambiguous alternatives for every ambiguous + // decision encountered while parsing. + // + // This prediction mode may be used for diagnosing ambiguities during + // grammar development. Due to the performance overhead of calculating sets + // of ambiguous alternatives, this prediction mode should be avoided when + // the exact results are not necessary. + // + // This prediction mode does not provide any guarantees for prediction + // behavior for syntactically-incorrect inputs. + // + PredictionModeLLExactAmbigDetection = 2 +) + +// PredictionModehasSLLConflictTerminatingPrediction computes the SLL prediction termination condition. +// +// This method computes the SLL prediction termination condition for both of +// the following cases: +// +// - The usual SLL+LL fallback upon SLL conflict +// - Pure SLL without LL fallback +// +// # Combined SLL+LL Parsing +// +// When LL-fallback is enabled upon SLL conflict, correct predictions are +// ensured regardless of how the termination condition is computed by this +// method. Due to the substantially higher cost of LL prediction, the +// prediction should only fall back to LL when the additional lookahead +// cannot lead to a unique SLL prediction. +// +// Assuming combined SLL+LL parsing, an SLL configuration set with only +// conflicting subsets should fall back to full LL, even if the +// configuration sets don't resolve to the same alternative, e.g. +// +// {1,2} and {3,4} +// +// If there is at least one non-conflicting +// configuration, SLL could continue with the hopes that more lookahead will +// resolve via one of those non-conflicting configurations. +// +// Here's the prediction termination rule them: SLL (for SLL+LL parsing) +// stops when it sees only conflicting configuration subsets. In contrast, +// full LL keeps going when there is uncertainty. +// +// # Heuristic +// +// As a heuristic, we stop prediction when we see any conflicting subset +// unless we see a state that only has one alternative associated with it. +// The single-alt-state thing lets prediction continue upon rules like +// (otherwise, it would admit defeat too soon): +// +// [12|1|[], 6|2|[], 12|2|[]]. s : (ID | ID ID?) ; +// +// When the [ATN] simulation reaches the state before ';', it has a +// [DFA] state that looks like: +// +// [12|1|[], 6|2|[], 12|2|[]] +// +// Naturally +// +// 12|1|[] and 12|2|[] +// +// conflict, but we cannot stop processing this node because alternative to has another way to continue, +// via +// +// [6|2|[]] +// +// It also let's us continue for this rule: +// +// [1|1|[], 1|2|[], 8|3|[]] a : A | A | A B ; +// +// After Matching input A, we reach the stop state for rule A, state 1. +// State 8 is the state immediately before B. Clearly alternatives 1 and 2 +// conflict and no amount of further lookahead will separate the two. +// However, alternative 3 will be able to continue, and so we do not stop +// working on this state. In the previous example, we're concerned with +// states associated with the conflicting alternatives. Here alt 3 is not +// associated with the conflicting configs, but since we can continue +// looking for input reasonably, don't declare the state done. +// +// # Pure SLL Parsing +// +// To handle pure SLL parsing, all we have to do is make sure that we +// combine stack contexts for configurations that differ only by semantic +// predicate. From there, we can do the usual SLL termination heuristic. +// +// # Predicates in SLL+LL Parsing +// +// SLL decisions don't evaluate predicates until after they reach [DFA] stop +// states because they need to create the [DFA] cache that works in all +// semantic situations. In contrast, full LL evaluates predicates collected +// during start state computation, so it can ignore predicates thereafter. +// This means that SLL termination detection can totally ignore semantic +// predicates. +// +// Implementation-wise, [ATNConfigSet] combines stack contexts but not +// semantic predicate contexts, so we might see two configurations like the +// following: +// +// (s, 1, x, {}), (s, 1, x', {p}) +// +// Before testing these configurations against others, we have to merge +// x and x' (without modifying the existing configurations). +// For example, we test (x+x')==x” when looking for conflicts in +// the following configurations: +// +// (s, 1, x, {}), (s, 1, x', {p}), (s, 2, x”, {}) +// +// If the configuration set has predicates (as indicated by +// [ATNConfigSet.hasSemanticContext]), this algorithm makes a copy of +// the configurations to strip out all the predicates so that a standard +// [ATNConfigSet] will merge everything ignoring predicates. +func PredictionModehasSLLConflictTerminatingPrediction(mode int, configs *ATNConfigSet) bool { + + // Configs in rule stop states indicate reaching the end of the decision + // rule (local context) or end of start rule (full context). If all + // configs meet this condition, then none of the configurations is able + // to Match additional input, so we terminate prediction. + // + if PredictionModeallConfigsInRuleStopStates(configs) { + return true + } + + // pure SLL mode parsing + if mode == PredictionModeSLL { + // Don't bother with combining configs from different semantic + // contexts if we can fail over to full LL costs more time + // since we'll often fail over anyway. + if configs.hasSemanticContext { + // dup configs, tossing out semantic predicates + dup := NewATNConfigSet(false) + for _, c := range configs.configs { + + // NewATNConfig({semanticContext:}, c) + c = NewATNConfig2(c, SemanticContextNone) + dup.Add(c, nil) + } + configs = dup + } + // now we have combined contexts for configs with dissimilar predicates + } + // pure SLL or combined SLL+LL mode parsing + altsets := PredictionModegetConflictingAltSubsets(configs) + return PredictionModehasConflictingAltSet(altsets) && !PredictionModehasStateAssociatedWithOneAlt(configs) +} + +// PredictionModehasConfigInRuleStopState checks if any configuration in the given configs is in a +// [RuleStopState]. Configurations meeting this condition have reached +// the end of the decision rule (local context) or end of start rule (full +// context). +// +// The func returns true if any configuration in the supplied configs is in a [RuleStopState] +func PredictionModehasConfigInRuleStopState(configs *ATNConfigSet) bool { + for _, c := range configs.configs { + if _, ok := c.GetState().(*RuleStopState); ok { + return true + } + } + return false +} + +// PredictionModeallConfigsInRuleStopStates checks if all configurations in configs are in a +// [RuleStopState]. Configurations meeting this condition have reached +// the end of the decision rule (local context) or end of start rule (full +// context). +// +// the func returns true if all configurations in configs are in a +// [RuleStopState] +func PredictionModeallConfigsInRuleStopStates(configs *ATNConfigSet) bool { + + for _, c := range configs.configs { + if _, ok := c.GetState().(*RuleStopState); !ok { + return false + } + } + return true +} + +// PredictionModeresolvesToJustOneViableAlt checks full LL prediction termination. +// +// Can we stop looking ahead during [ATN] simulation or is there some +// uncertainty as to which alternative we will ultimately pick, after +// consuming more input? Even if there are partial conflicts, we might know +// that everything is going to resolve to the same minimum alternative. That +// means we can stop since no more lookahead will change that fact. On the +// other hand, there might be multiple conflicts that resolve to different +// minimums. That means we need more look ahead to decide which of those +// alternatives we should predict. +// +// The basic idea is to split the set of configurations 'C', into +// conflicting subsets (s, _, ctx, _) and singleton subsets with +// non-conflicting configurations. Two configurations conflict if they have +// identical [ATNConfig].state and [ATNConfig].context values +// but a different [ATNConfig].alt value, e.g. +// +// (s, i, ctx, _) +// +// and +// +// (s, j, ctx, _) ; for i != j +// +// Reduce these configuration subsets to the set of possible alternatives. +// You can compute the alternative subsets in one pass as follows: +// +// A_s,ctx = {i | (s, i, ctx, _)} +// +// for each configuration in C holding s and ctx fixed. +// +// Or in pseudo-code: +// +// for each configuration c in C: +// map[c] U = c.ATNConfig.alt alt // map hash/equals uses s and x, not alt and not pred +// +// The values in map are the set of +// +// A_s,ctx +// +// sets. +// +// If +// +// |A_s,ctx| = 1 +// +// then there is no conflict associated with s and ctx. +// +// Reduce the subsets to singletons by choosing a minimum of each subset. If +// the union of these alternative subsets is a singleton, then no amount of +// further lookahead will help us. We will always pick that alternative. If, +// however, there is more than one alternative, then we are uncertain which +// alternative to predict and must continue looking for resolution. We may +// or may not discover an ambiguity in the future, even if there are no +// conflicting subsets this round. +// +// The biggest sin is to terminate early because it means we've made a +// decision but were uncertain as to the eventual outcome. We haven't used +// enough lookahead. On the other hand, announcing a conflict too late is no +// big deal; you will still have the conflict. It's just inefficient. It +// might even look until the end of file. +// +// No special consideration for semantic predicates is required because +// predicates are evaluated on-the-fly for full LL prediction, ensuring that +// no configuration contains a semantic context during the termination +// check. +// +// # Conflicting Configs +// +// Two configurations: +// +// (s, i, x) and (s, j, x') +// +// conflict when i != j but x = x'. Because we merge all +// (s, i, _) configurations together, that means that there are at +// most n configurations associated with state s for +// n possible alternatives in the decision. The merged stacks +// complicate the comparison of configuration contexts x and x'. +// +// Sam checks to see if one is a subset of the other by calling +// merge and checking to see if the merged result is either x or x'. +// If the x associated with lowest alternative i +// is the superset, then i is the only possible prediction since the +// others resolve to min(i) as well. However, if x is +// associated with j > i then at least one stack configuration for +// j is not in conflict with alternative i. The algorithm +// should keep going, looking for more lookahead due to the uncertainty. +// +// For simplicity, I'm doing an equality check between x and +// x', which lets the algorithm continue to consume lookahead longer +// than necessary. The reason I like the equality is of course the +// simplicity but also because that is the test you need to detect the +// alternatives that are actually in conflict. +// +// # Continue/Stop Rule +// +// Continue if the union of resolved alternative sets from non-conflicting and +// conflicting alternative subsets has more than one alternative. We are +// uncertain about which alternative to predict. +// +// The complete set of alternatives, +// +// [i for (_, i, _)] +// +// tells us which alternatives are still in the running for the amount of input we've +// consumed at this point. The conflicting sets let us to strip away +// configurations that won't lead to more states because we resolve +// conflicts to the configuration with a minimum alternate for the +// conflicting set. +// +// Cases +// +// - no conflicts and more than 1 alternative in set => continue +// - (s, 1, x), (s, 2, x), (s, 3, z), (s', 1, y), (s', 2, y) yields non-conflicting set +// {3} ∪ conflicting sets min({1,2}) ∪ min({1,2}) = {1,3} => continue +// - (s, 1, x), (s, 2, x), (s', 1, y), (s', 2, y), (s”, 1, z) yields non-conflicting set +// {1} ∪ conflicting sets min({1,2}) ∪ min({1,2}) = {1} => stop and predict 1 +// - (s, 1, x), (s, 2, x), (s', 1, y), (s', 2, y) yields conflicting, reduced sets +// {1} ∪ {1} = {1} => stop and predict 1, can announce ambiguity {1,2} +// - (s, 1, x), (s, 2, x), (s', 2, y), (s', 3, y) yields conflicting, reduced sets +// {1} ∪ {2} = {1,2} => continue +// - (s, 1, x), (s, 2, x), (s', 2, y), (s', 3, y) yields conflicting, reduced sets +// {1} ∪ {2} = {1,2} => continue +// - (s, 1, x), (s, 2, x), (s', 3, y), (s', 4, y) yields conflicting, reduced sets +// {1} ∪ {3} = {1,3} => continue +// +// # Exact Ambiguity Detection +// +// If all states report the same conflicting set of alternatives, then we +// know we have the exact ambiguity set: +// +// |A_i| > 1 +// +// and +// +// A_i = A_j ; for all i, j +// +// In other words, we continue examining lookahead until all A_i +// have more than one alternative and all A_i are the same. If +// +// A={{1,2}, {1,3}} +// +// then regular LL prediction would terminate because the resolved set is {1}. +// To determine what the real ambiguity is, we have to know whether the ambiguity is between one and +// two or one and three so we keep going. We can only stop prediction when +// we need exact ambiguity detection when the sets look like: +// +// A={{1,2}} +// +// or +// +// {{1,2},{1,2}}, etc... +func PredictionModeresolvesToJustOneViableAlt(altsets []*BitSet) int { + return PredictionModegetSingleViableAlt(altsets) +} + +// PredictionModeallSubsetsConflict determines if every alternative subset in altsets contains more +// than one alternative. +// +// The func returns true if every [BitSet] in altsets has +// [BitSet].cardinality cardinality > 1 +func PredictionModeallSubsetsConflict(altsets []*BitSet) bool { + return !PredictionModehasNonConflictingAltSet(altsets) +} + +// PredictionModehasNonConflictingAltSet determines if any single alternative subset in altsets contains +// exactly one alternative. +// +// The func returns true if altsets contains at least one [BitSet] with +// [BitSet].cardinality cardinality 1 +func PredictionModehasNonConflictingAltSet(altsets []*BitSet) bool { + for i := 0; i < len(altsets); i++ { + alts := altsets[i] + if alts.length() == 1 { + return true + } + } + return false +} + +// PredictionModehasConflictingAltSet determines if any single alternative subset in altsets contains +// more than one alternative. +// +// The func returns true if altsets contains a [BitSet] with +// [BitSet].cardinality cardinality > 1, otherwise false +func PredictionModehasConflictingAltSet(altsets []*BitSet) bool { + for i := 0; i < len(altsets); i++ { + alts := altsets[i] + if alts.length() > 1 { + return true + } + } + return false +} + +// PredictionModeallSubsetsEqual determines if every alternative subset in altsets is equivalent. +// +// The func returns true if every member of altsets is equal to the others. +func PredictionModeallSubsetsEqual(altsets []*BitSet) bool { + var first *BitSet + + for i := 0; i < len(altsets); i++ { + alts := altsets[i] + if first == nil { + first = alts + } else if alts != first { + return false + } + } + + return true +} + +// PredictionModegetUniqueAlt returns the unique alternative predicted by all alternative subsets in +// altsets. If no such alternative exists, this method returns +// [ATNInvalidAltNumber]. +// +// @param altsets a collection of alternative subsets +func PredictionModegetUniqueAlt(altsets []*BitSet) int { + all := PredictionModeGetAlts(altsets) + if all.length() == 1 { + return all.minValue() + } + + return ATNInvalidAltNumber +} + +// PredictionModeGetAlts returns the complete set of represented alternatives for a collection of +// alternative subsets. This method returns the union of each [BitSet] +// in altsets, being the set of represented alternatives in altsets. +func PredictionModeGetAlts(altsets []*BitSet) *BitSet { + all := NewBitSet() + for _, alts := range altsets { + all.or(alts) + } + return all +} + +// PredictionModegetConflictingAltSubsets gets the conflicting alt subsets from a configuration set. +// +// for each configuration c in configs: +// map[c] U= c.ATNConfig.alt // map hash/equals uses s and x, not alt and not pred +func PredictionModegetConflictingAltSubsets(configs *ATNConfigSet) []*BitSet { + configToAlts := NewJMap[*ATNConfig, *BitSet, *ATNAltConfigComparator[*ATNConfig]](atnAltCfgEqInst, AltSetCollection, "PredictionModegetConflictingAltSubsets()") + + for _, c := range configs.configs { + + alts, ok := configToAlts.Get(c) + if !ok { + alts = NewBitSet() + configToAlts.Put(c, alts) + } + alts.add(c.GetAlt()) + } + + return configToAlts.Values() +} + +// PredictionModeGetStateToAltMap gets a map from state to alt subset from a configuration set. +// +// for each configuration c in configs: +// map[c.ATNConfig.state] U= c.ATNConfig.alt} +func PredictionModeGetStateToAltMap(configs *ATNConfigSet) *AltDict { + m := NewAltDict() + + for _, c := range configs.configs { + alts := m.Get(c.GetState().String()) + if alts == nil { + alts = NewBitSet() + m.put(c.GetState().String(), alts) + } + alts.(*BitSet).add(c.GetAlt()) + } + return m +} + +func PredictionModehasStateAssociatedWithOneAlt(configs *ATNConfigSet) bool { + values := PredictionModeGetStateToAltMap(configs).values() + for i := 0; i < len(values); i++ { + if values[i].(*BitSet).length() == 1 { + return true + } + } + return false +} + +// PredictionModegetSingleViableAlt gets the single alternative predicted by all alternative subsets in altsets +// if there is one. +// +// TODO: JI - Review this code - it does not seem to do the same thing as the Java code - maybe because [BitSet] is not like the Java utils BitSet +func PredictionModegetSingleViableAlt(altsets []*BitSet) int { + result := ATNInvalidAltNumber + + for i := 0; i < len(altsets); i++ { + alts := altsets[i] + minAlt := alts.minValue() + if result == ATNInvalidAltNumber { + result = minAlt + } else if result != minAlt { // more than 1 viable alt + return ATNInvalidAltNumber + } + } + return result +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/recognizer.go b/vendor/github.com/antlr4-go/antlr/v4/recognizer.go new file mode 100644 index 0000000000..2e0b504fb3 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/recognizer.go @@ -0,0 +1,241 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strings" + + "strconv" +) + +type Recognizer interface { + GetLiteralNames() []string + GetSymbolicNames() []string + GetRuleNames() []string + + Sempred(RuleContext, int, int) bool + Precpred(RuleContext, int) bool + + GetState() int + SetState(int) + Action(RuleContext, int, int) + AddErrorListener(ErrorListener) + RemoveErrorListeners() + GetATN() *ATN + GetErrorListenerDispatch() ErrorListener + HasError() bool + GetError() RecognitionException + SetError(RecognitionException) +} + +type BaseRecognizer struct { + listeners []ErrorListener + state int + + RuleNames []string + LiteralNames []string + SymbolicNames []string + GrammarFileName string + SynErr RecognitionException +} + +func NewBaseRecognizer() *BaseRecognizer { + rec := new(BaseRecognizer) + rec.listeners = []ErrorListener{ConsoleErrorListenerINSTANCE} + rec.state = -1 + return rec +} + +//goland:noinspection GoUnusedGlobalVariable +var tokenTypeMapCache = make(map[string]int) + +//goland:noinspection GoUnusedGlobalVariable +var ruleIndexMapCache = make(map[string]int) + +func (b *BaseRecognizer) checkVersion(toolVersion string) { + runtimeVersion := "4.12.0" + if runtimeVersion != toolVersion { + fmt.Println("ANTLR runtime and generated code versions disagree: " + runtimeVersion + "!=" + toolVersion) + } +} + +func (b *BaseRecognizer) SetError(err RecognitionException) { + b.SynErr = err +} + +func (b *BaseRecognizer) HasError() bool { + return b.SynErr != nil +} + +func (b *BaseRecognizer) GetError() RecognitionException { + return b.SynErr +} + +func (b *BaseRecognizer) Action(_ RuleContext, _, _ int) { + panic("action not implemented on Recognizer!") +} + +func (b *BaseRecognizer) AddErrorListener(listener ErrorListener) { + b.listeners = append(b.listeners, listener) +} + +func (b *BaseRecognizer) RemoveErrorListeners() { + b.listeners = make([]ErrorListener, 0) +} + +func (b *BaseRecognizer) GetRuleNames() []string { + return b.RuleNames +} + +func (b *BaseRecognizer) GetTokenNames() []string { + return b.LiteralNames +} + +func (b *BaseRecognizer) GetSymbolicNames() []string { + return b.SymbolicNames +} + +func (b *BaseRecognizer) GetLiteralNames() []string { + return b.LiteralNames +} + +func (b *BaseRecognizer) GetState() int { + return b.state +} + +func (b *BaseRecognizer) SetState(v int) { + b.state = v +} + +//func (b *Recognizer) GetTokenTypeMap() { +// var tokenNames = b.GetTokenNames() +// if (tokenNames==nil) { +// panic("The current recognizer does not provide a list of token names.") +// } +// var result = tokenTypeMapCache[tokenNames] +// if(result==nil) { +// result = tokenNames.reduce(function(o, k, i) { o[k] = i }) +// result.EOF = TokenEOF +// tokenTypeMapCache[tokenNames] = result +// } +// return result +//} + +// GetRuleIndexMap Get a map from rule names to rule indexes. +// +// Used for XPath and tree pattern compilation. +// +// TODO: JI This is not yet implemented in the Go runtime. Maybe not needed. +func (b *BaseRecognizer) GetRuleIndexMap() map[string]int { + + panic("Method not defined!") + // var ruleNames = b.GetRuleNames() + // if (ruleNames==nil) { + // panic("The current recognizer does not provide a list of rule names.") + // } + // + // var result = ruleIndexMapCache[ruleNames] + // if(result==nil) { + // result = ruleNames.reduce(function(o, k, i) { o[k] = i }) + // ruleIndexMapCache[ruleNames] = result + // } + // return result +} + +// GetTokenType get the token type based upon its name +func (b *BaseRecognizer) GetTokenType(_ string) int { + panic("Method not defined!") + // var ttype = b.GetTokenTypeMap()[tokenName] + // if (ttype !=nil) { + // return ttype + // } else { + // return TokenInvalidType + // } +} + +//func (b *Recognizer) GetTokenTypeMap() map[string]int { +// Vocabulary vocabulary = getVocabulary() +// +// Synchronized (tokenTypeMapCache) { +// Map result = tokenTypeMapCache.Get(vocabulary) +// if (result == null) { +// result = new HashMap() +// for (int i = 0; i < GetATN().maxTokenType; i++) { +// String literalName = vocabulary.getLiteralName(i) +// if (literalName != null) { +// result.put(literalName, i) +// } +// +// String symbolicName = vocabulary.GetSymbolicName(i) +// if (symbolicName != null) { +// result.put(symbolicName, i) +// } +// } +// +// result.put("EOF", Token.EOF) +// result = Collections.unmodifiableMap(result) +// tokenTypeMapCache.put(vocabulary, result) +// } +// +// return result +// } +//} + +// GetErrorHeader returns the error header, normally line/character position information. +// +// Can be overridden in sub structs embedding BaseRecognizer. +func (b *BaseRecognizer) GetErrorHeader(e RecognitionException) string { + line := e.GetOffendingToken().GetLine() + column := e.GetOffendingToken().GetColumn() + return "line " + strconv.Itoa(line) + ":" + strconv.Itoa(column) +} + +// GetTokenErrorDisplay shows how a token should be displayed in an error message. +// +// The default is to display just the text, but during development you might +// want to have a lot of information spit out. Override in that case +// to use t.String() (which, for CommonToken, dumps everything about +// the token). This is better than forcing you to override a method in +// your token objects because you don't have to go modify your lexer +// so that it creates a NewJava type. +// +// Deprecated: This method is not called by the ANTLR 4 Runtime. Specific +// implementations of [ANTLRErrorStrategy] may provide a similar +// feature when necessary. For example, see [DefaultErrorStrategy].GetTokenErrorDisplay() +func (b *BaseRecognizer) GetTokenErrorDisplay(t Token) string { + if t == nil { + return "" + } + s := t.GetText() + if s == "" { + if t.GetTokenType() == TokenEOF { + s = "" + } else { + s = "<" + strconv.Itoa(t.GetTokenType()) + ">" + } + } + s = strings.Replace(s, "\t", "\\t", -1) + s = strings.Replace(s, "\n", "\\n", -1) + s = strings.Replace(s, "\r", "\\r", -1) + + return "'" + s + "'" +} + +func (b *BaseRecognizer) GetErrorListenerDispatch() ErrorListener { + return NewProxyErrorListener(b.listeners) +} + +// Sempred embedding structs need to override this if there are sempreds or actions +// that the ATN interpreter needs to execute +func (b *BaseRecognizer) Sempred(_ RuleContext, _ int, _ int) bool { + return true +} + +// Precpred embedding structs need to override this if there are preceding predicates +// that the ATN interpreter needs to execute +func (b *BaseRecognizer) Precpred(_ RuleContext, _ int) bool { + return true +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/rule_context.go b/vendor/github.com/antlr4-go/antlr/v4/rule_context.go new file mode 100644 index 0000000000..f2ad04793e --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/rule_context.go @@ -0,0 +1,40 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// RuleContext is a record of a single rule invocation. It knows +// which context invoked it, if any. If there is no parent context, then +// naturally the invoking state is not valid. The parent link +// provides a chain upwards from the current rule invocation to the root +// of the invocation tree, forming a stack. +// +// We actually carry no information about the rule associated with this context (except +// when parsing). We keep only the state number of the invoking state from +// the [ATN] submachine that invoked this. Contrast this with the s +// pointer inside [ParserRuleContext] that tracks the current state +// being "executed" for the current rule. +// +// The parent contexts are useful for computing lookahead sets and +// getting error information. +// +// These objects are used during parsing and prediction. +// For the special case of parsers, we use the struct +// [ParserRuleContext], which embeds a RuleContext. +// +// @see ParserRuleContext +type RuleContext interface { + RuleNode + + GetInvokingState() int + SetInvokingState(int) + + GetRuleIndex() int + IsEmpty() bool + + GetAltNumber() int + SetAltNumber(altNumber int) + + String([]string, RuleContext) string +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/semantic_context.go b/vendor/github.com/antlr4-go/antlr/v4/semantic_context.go new file mode 100644 index 0000000000..68cb9061eb --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/semantic_context.go @@ -0,0 +1,464 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" +) + +// SemanticContext is a tree structure used to record the semantic context in which +// +// an ATN configuration is valid. It's either a single predicate, +// a conjunction p1 && p2, or a sum of products p1 || p2. +// +// I have scoped the AND, OR, and Predicate subclasses of +// [SemanticContext] within the scope of this outer ``class'' +type SemanticContext interface { + Equals(other Collectable[SemanticContext]) bool + Hash() int + + evaluate(parser Recognizer, outerContext RuleContext) bool + evalPrecedence(parser Recognizer, outerContext RuleContext) SemanticContext + + String() string +} + +func SemanticContextandContext(a, b SemanticContext) SemanticContext { + if a == nil || a == SemanticContextNone { + return b + } + if b == nil || b == SemanticContextNone { + return a + } + result := NewAND(a, b) + if len(result.opnds) == 1 { + return result.opnds[0] + } + + return result +} + +func SemanticContextorContext(a, b SemanticContext) SemanticContext { + if a == nil { + return b + } + if b == nil { + return a + } + if a == SemanticContextNone || b == SemanticContextNone { + return SemanticContextNone + } + result := NewOR(a, b) + if len(result.opnds) == 1 { + return result.opnds[0] + } + + return result +} + +type Predicate struct { + ruleIndex int + predIndex int + isCtxDependent bool +} + +func NewPredicate(ruleIndex, predIndex int, isCtxDependent bool) *Predicate { + p := new(Predicate) + + p.ruleIndex = ruleIndex + p.predIndex = predIndex + p.isCtxDependent = isCtxDependent // e.g., $i ref in pred + return p +} + +//The default {@link SemanticContext}, which is semantically equivalent to +//a predicate of the form {@code {true}?}. + +var SemanticContextNone = NewPredicate(-1, -1, false) + +func (p *Predicate) evalPrecedence(_ Recognizer, _ RuleContext) SemanticContext { + return p +} + +func (p *Predicate) evaluate(parser Recognizer, outerContext RuleContext) bool { + + var localctx RuleContext + + if p.isCtxDependent { + localctx = outerContext + } + + return parser.Sempred(localctx, p.ruleIndex, p.predIndex) +} + +func (p *Predicate) Equals(other Collectable[SemanticContext]) bool { + if p == other { + return true + } else if _, ok := other.(*Predicate); !ok { + return false + } else { + return p.ruleIndex == other.(*Predicate).ruleIndex && + p.predIndex == other.(*Predicate).predIndex && + p.isCtxDependent == other.(*Predicate).isCtxDependent + } +} + +func (p *Predicate) Hash() int { + h := murmurInit(0) + h = murmurUpdate(h, p.ruleIndex) + h = murmurUpdate(h, p.predIndex) + if p.isCtxDependent { + h = murmurUpdate(h, 1) + } else { + h = murmurUpdate(h, 0) + } + return murmurFinish(h, 3) +} + +func (p *Predicate) String() string { + return "{" + strconv.Itoa(p.ruleIndex) + ":" + strconv.Itoa(p.predIndex) + "}?" +} + +type PrecedencePredicate struct { + precedence int +} + +func NewPrecedencePredicate(precedence int) *PrecedencePredicate { + + p := new(PrecedencePredicate) + p.precedence = precedence + + return p +} + +func (p *PrecedencePredicate) evaluate(parser Recognizer, outerContext RuleContext) bool { + return parser.Precpred(outerContext, p.precedence) +} + +func (p *PrecedencePredicate) evalPrecedence(parser Recognizer, outerContext RuleContext) SemanticContext { + if parser.Precpred(outerContext, p.precedence) { + return SemanticContextNone + } + + return nil +} + +func (p *PrecedencePredicate) compareTo(other *PrecedencePredicate) int { + return p.precedence - other.precedence +} + +func (p *PrecedencePredicate) Equals(other Collectable[SemanticContext]) bool { + + var op *PrecedencePredicate + var ok bool + if op, ok = other.(*PrecedencePredicate); !ok { + return false + } + + if p == op { + return true + } + + return p.precedence == other.(*PrecedencePredicate).precedence +} + +func (p *PrecedencePredicate) Hash() int { + h := uint32(1) + h = 31*h + uint32(p.precedence) + return int(h) +} + +func (p *PrecedencePredicate) String() string { + return "{" + strconv.Itoa(p.precedence) + ">=prec}?" +} + +func PrecedencePredicatefilterPrecedencePredicates(set *JStore[SemanticContext, Comparator[SemanticContext]]) []*PrecedencePredicate { + result := make([]*PrecedencePredicate, 0) + + set.Each(func(v SemanticContext) bool { + if c2, ok := v.(*PrecedencePredicate); ok { + result = append(result, c2) + } + return true + }) + + return result +} + +// A semantic context which is true whenever none of the contained contexts +// is false.` + +type AND struct { + opnds []SemanticContext +} + +func NewAND(a, b SemanticContext) *AND { + + operands := NewJStore[SemanticContext, Comparator[SemanticContext]](semctxEqInst, SemanticContextCollection, "NewAND() operands") + if aa, ok := a.(*AND); ok { + for _, o := range aa.opnds { + operands.Put(o) + } + } else { + operands.Put(a) + } + + if ba, ok := b.(*AND); ok { + for _, o := range ba.opnds { + operands.Put(o) + } + } else { + operands.Put(b) + } + precedencePredicates := PrecedencePredicatefilterPrecedencePredicates(operands) + if len(precedencePredicates) > 0 { + // interested in the transition with the lowest precedence + var reduced *PrecedencePredicate + + for _, p := range precedencePredicates { + if reduced == nil || p.precedence < reduced.precedence { + reduced = p + } + } + + operands.Put(reduced) + } + + vs := operands.Values() + opnds := make([]SemanticContext, len(vs)) + copy(opnds, vs) + + and := new(AND) + and.opnds = opnds + + return and +} + +func (a *AND) Equals(other Collectable[SemanticContext]) bool { + if a == other { + return true + } + if _, ok := other.(*AND); !ok { + return false + } else { + for i, v := range other.(*AND).opnds { + if !a.opnds[i].Equals(v) { + return false + } + } + return true + } +} + +// {@inheritDoc} +// +//

+// The evaluation of predicates by a context is short-circuiting, but +// unordered.

+func (a *AND) evaluate(parser Recognizer, outerContext RuleContext) bool { + for i := 0; i < len(a.opnds); i++ { + if !a.opnds[i].evaluate(parser, outerContext) { + return false + } + } + return true +} + +func (a *AND) evalPrecedence(parser Recognizer, outerContext RuleContext) SemanticContext { + differs := false + operands := make([]SemanticContext, 0) + + for i := 0; i < len(a.opnds); i++ { + context := a.opnds[i] + evaluated := context.evalPrecedence(parser, outerContext) + differs = differs || (evaluated != context) + if evaluated == nil { + // The AND context is false if any element is false + return nil + } else if evaluated != SemanticContextNone { + // Reduce the result by Skipping true elements + operands = append(operands, evaluated) + } + } + if !differs { + return a + } + + if len(operands) == 0 { + // all elements were true, so the AND context is true + return SemanticContextNone + } + + var result SemanticContext + + for _, o := range operands { + if result == nil { + result = o + } else { + result = SemanticContextandContext(result, o) + } + } + + return result +} + +func (a *AND) Hash() int { + h := murmurInit(37) // Init with a value different from OR + for _, op := range a.opnds { + h = murmurUpdate(h, op.Hash()) + } + return murmurFinish(h, len(a.opnds)) +} + +func (o *OR) Hash() int { + h := murmurInit(41) // Init with o value different from AND + for _, op := range o.opnds { + h = murmurUpdate(h, op.Hash()) + } + return murmurFinish(h, len(o.opnds)) +} + +func (a *AND) String() string { + s := "" + + for _, o := range a.opnds { + s += "&& " + fmt.Sprint(o) + } + + if len(s) > 3 { + return s[0:3] + } + + return s +} + +// +// A semantic context which is true whenever at least one of the contained +// contexts is true. +// + +type OR struct { + opnds []SemanticContext +} + +func NewOR(a, b SemanticContext) *OR { + + operands := NewJStore[SemanticContext, Comparator[SemanticContext]](semctxEqInst, SemanticContextCollection, "NewOR() operands") + if aa, ok := a.(*OR); ok { + for _, o := range aa.opnds { + operands.Put(o) + } + } else { + operands.Put(a) + } + + if ba, ok := b.(*OR); ok { + for _, o := range ba.opnds { + operands.Put(o) + } + } else { + operands.Put(b) + } + precedencePredicates := PrecedencePredicatefilterPrecedencePredicates(operands) + if len(precedencePredicates) > 0 { + // interested in the transition with the lowest precedence + var reduced *PrecedencePredicate + + for _, p := range precedencePredicates { + if reduced == nil || p.precedence > reduced.precedence { + reduced = p + } + } + + operands.Put(reduced) + } + + vs := operands.Values() + + opnds := make([]SemanticContext, len(vs)) + copy(opnds, vs) + + o := new(OR) + o.opnds = opnds + + return o +} + +func (o *OR) Equals(other Collectable[SemanticContext]) bool { + if o == other { + return true + } else if _, ok := other.(*OR); !ok { + return false + } else { + for i, v := range other.(*OR).opnds { + if !o.opnds[i].Equals(v) { + return false + } + } + return true + } +} + +//

+// The evaluation of predicates by o context is short-circuiting, but +// unordered.

+func (o *OR) evaluate(parser Recognizer, outerContext RuleContext) bool { + for i := 0; i < len(o.opnds); i++ { + if o.opnds[i].evaluate(parser, outerContext) { + return true + } + } + return false +} + +func (o *OR) evalPrecedence(parser Recognizer, outerContext RuleContext) SemanticContext { + differs := false + operands := make([]SemanticContext, 0) + for i := 0; i < len(o.opnds); i++ { + context := o.opnds[i] + evaluated := context.evalPrecedence(parser, outerContext) + differs = differs || (evaluated != context) + if evaluated == SemanticContextNone { + // The OR context is true if any element is true + return SemanticContextNone + } else if evaluated != nil { + // Reduce the result by Skipping false elements + operands = append(operands, evaluated) + } + } + if !differs { + return o + } + if len(operands) == 0 { + // all elements were false, so the OR context is false + return nil + } + var result SemanticContext + + for _, o := range operands { + if result == nil { + result = o + } else { + result = SemanticContextorContext(result, o) + } + } + + return result +} + +func (o *OR) String() string { + s := "" + + for _, o := range o.opnds { + s += "|| " + fmt.Sprint(o) + } + + if len(s) > 3 { + return s[0:3] + } + + return s +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/statistics.go b/vendor/github.com/antlr4-go/antlr/v4/statistics.go new file mode 100644 index 0000000000..70c0673a0f --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/statistics.go @@ -0,0 +1,281 @@ +//go:build antlr.stats + +package antlr + +import ( + "fmt" + "log" + "os" + "path/filepath" + "sort" + "strconv" + "sync" +) + +// This file allows the user to collect statistics about the runtime of the ANTLR runtime. It is not enabled by default +// and so incurs no time penalty. To enable it, you must build the runtime with the antlr.stats build tag. +// + +// Tells various components to collect statistics - because it is only true when this file is included, it will +// allow the compiler to completely eliminate all the code that is only used when collecting statistics. +const collectStats = true + +// goRunStats is a collection of all the various data the ANTLR runtime has collected about a particular run. +// It is exported so that it can be used by others to look for things that are not already looked for in the +// runtime statistics. +type goRunStats struct { + + // jStats is a slice of all the [JStatRec] records that have been created, which is one for EVERY collection created + // during a run. It is exported so that it can be used by others to look for things that are not already looked for + // within this package. + // + jStats []*JStatRec + jStatsLock sync.RWMutex + topN int + topNByMax []*JStatRec + topNByUsed []*JStatRec + unusedCollections map[CollectionSource]int + counts map[CollectionSource]int +} + +const ( + collectionsFile = "collections" +) + +var ( + Statistics = &goRunStats{ + topN: 10, + } +) + +type statsOption func(*goRunStats) error + +// Configure allows the statistics system to be configured as the user wants and override the defaults +func (s *goRunStats) Configure(options ...statsOption) error { + for _, option := range options { + err := option(s) + if err != nil { + return err + } + } + return nil +} + +// WithTopN sets the number of things to list in the report when we are concerned with the top N things. +// +// For example, if you want to see the top 20 collections by size, you can do: +// +// antlr.Statistics.Configure(antlr.WithTopN(20)) +func WithTopN(topN int) statsOption { + return func(s *goRunStats) error { + s.topN = topN + return nil + } +} + +// Analyze looks through all the statistical records and computes all the outputs that might be useful to the user. +// +// The function gathers and analyzes a number of statistics about any particular run of +// an ANTLR generated recognizer. In the vast majority of cases, the statistics are only +// useful to maintainers of ANTLR itself, but they can be useful to users as well. They may be +// especially useful in tracking down bugs or performance problems when an ANTLR user could +// supply the output from this package, but cannot supply the grammar file(s) they are using, even +// privately to the maintainers. +// +// The statistics are gathered by the runtime itself, and are not gathered by the parser or lexer, but the user +// must call this function their selves to analyze the statistics. This is because none of the infrastructure is +// extant unless the calling program is built with the antlr.stats tag like so: +// +// go build -tags antlr.stats . +// +// When a program is built with the antlr.stats tag, the Statistics object is created and available outside +// the package. The user can then call the [Statistics.Analyze] function to analyze the statistics and then call the +// [Statistics.Report] function to report the statistics. +// +// Please forward any questions about this package to the ANTLR discussion groups on GitHub or send to them to +// me [Jim Idle] directly at jimi@idle.ws +// +// [Jim Idle]: https:://github.com/jim-idle +func (s *goRunStats) Analyze() { + + // Look for anything that looks strange and record it in our local maps etc for the report to present it + // + s.CollectionAnomalies() + s.TopNCollections() +} + +// TopNCollections looks through all the statistical records and gathers the top ten collections by size. +func (s *goRunStats) TopNCollections() { + + // Let's sort the stat records by MaxSize + // + sort.Slice(s.jStats, func(i, j int) bool { + return s.jStats[i].MaxSize > s.jStats[j].MaxSize + }) + + for i := 0; i < len(s.jStats) && i < s.topN; i++ { + s.topNByMax = append(s.topNByMax, s.jStats[i]) + } + + // Sort by the number of times used + // + sort.Slice(s.jStats, func(i, j int) bool { + return s.jStats[i].Gets+s.jStats[i].Puts > s.jStats[j].Gets+s.jStats[j].Puts + }) + for i := 0; i < len(s.jStats) && i < s.topN; i++ { + s.topNByUsed = append(s.topNByUsed, s.jStats[i]) + } +} + +// Report dumps a markdown formatted report of all the statistics collected during a run to the given dir output +// path, which should represent a directory. Generated files will be prefixed with the given prefix and will be +// given a type name such as `anomalies` and a time stamp such as `2021-09-01T12:34:56` and a .md suffix. +func (s *goRunStats) Report(dir string, prefix string) error { + + isDir, err := isDirectory(dir) + switch { + case err != nil: + return err + case !isDir: + return fmt.Errorf("output directory `%s` is not a directory", dir) + } + s.reportCollections(dir, prefix) + + // Clean out any old data in case the user forgets + // + s.Reset() + return nil +} + +func (s *goRunStats) Reset() { + s.jStats = nil + s.topNByUsed = nil + s.topNByMax = nil +} + +func (s *goRunStats) reportCollections(dir, prefix string) { + cname := filepath.Join(dir, ".asciidoctor") + // If the file doesn't exist, create it, or append to the file + f, err := os.OpenFile(cname, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644) + if err != nil { + log.Fatal(err) + } + _, _ = f.WriteString(`// .asciidoctorconfig +++++ + +++++`) + _ = f.Close() + + fname := filepath.Join(dir, prefix+"_"+"_"+collectionsFile+"_"+".adoc") + // If the file doesn't exist, create it, or append to the file + f, err = os.OpenFile(fname, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644) + if err != nil { + log.Fatal(err) + } + defer func(f *os.File) { + err := f.Close() + if err != nil { + log.Fatal(err) + } + }(f) + _, _ = f.WriteString("= Collections for " + prefix + "\n\n") + + _, _ = f.WriteString("== Summary\n") + + if s.unusedCollections != nil { + _, _ = f.WriteString("=== Unused Collections\n") + _, _ = f.WriteString("Unused collections incur a penalty for allocation that makes them a candidate for either\n") + _, _ = f.WriteString(" removal or optimization. If you are using a collection that is not used, you should\n") + _, _ = f.WriteString(" consider removing it. If you are using a collection that is used, but not very often,\n") + _, _ = f.WriteString(" you should consider using lazy initialization to defer the allocation until it is\n") + _, _ = f.WriteString(" actually needed.\n\n") + + _, _ = f.WriteString("\n.Unused collections\n") + _, _ = f.WriteString(`[cols="<3,>1"]` + "\n\n") + _, _ = f.WriteString("|===\n") + _, _ = f.WriteString("| Type | Count\n") + + for k, v := range s.unusedCollections { + _, _ = f.WriteString("| " + CollectionDescriptors[k].SybolicName + " | " + strconv.Itoa(v) + "\n") + } + f.WriteString("|===\n\n") + } + + _, _ = f.WriteString("\n.Summary of Collections\n") + _, _ = f.WriteString(`[cols="<3,>1"]` + "\n\n") + _, _ = f.WriteString("|===\n") + _, _ = f.WriteString("| Type | Count\n") + for k, v := range s.counts { + _, _ = f.WriteString("| " + CollectionDescriptors[k].SybolicName + " | " + strconv.Itoa(v) + "\n") + } + _, _ = f.WriteString("| Total | " + strconv.Itoa(len(s.jStats)) + "\n") + _, _ = f.WriteString("|===\n\n") + + _, _ = f.WriteString("\n.Summary of Top " + strconv.Itoa(s.topN) + " Collections by MaxSize\n") + _, _ = f.WriteString(`[cols="<1,<3,>1,>1,>1,>1"]` + "\n\n") + _, _ = f.WriteString("|===\n") + _, _ = f.WriteString("| Source | Description | MaxSize | EndSize | Puts | Gets\n") + for _, c := range s.topNByMax { + _, _ = f.WriteString("| " + CollectionDescriptors[c.Source].SybolicName + "\n") + _, _ = f.WriteString("| " + c.Description + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.MaxSize) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.CurSize) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.Puts) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.Gets) + "\n") + _, _ = f.WriteString("\n") + } + _, _ = f.WriteString("|===\n\n") + + _, _ = f.WriteString("\n.Summary of Top " + strconv.Itoa(s.topN) + " Collections by Access\n") + _, _ = f.WriteString(`[cols="<1,<3,>1,>1,>1,>1,>1"]` + "\n\n") + _, _ = f.WriteString("|===\n") + _, _ = f.WriteString("| Source | Description | MaxSize | EndSize | Puts | Gets | P+G\n") + for _, c := range s.topNByUsed { + _, _ = f.WriteString("| " + CollectionDescriptors[c.Source].SybolicName + "\n") + _, _ = f.WriteString("| " + c.Description + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.MaxSize) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.CurSize) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.Puts) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.Gets) + "\n") + _, _ = f.WriteString("| " + strconv.Itoa(c.Gets+c.Puts) + "\n") + _, _ = f.WriteString("\n") + } + _, _ = f.WriteString("|===\n\n") +} + +// AddJStatRec adds a [JStatRec] record to the [goRunStats] collection when build runtimeConfig antlr.stats is enabled. +func (s *goRunStats) AddJStatRec(rec *JStatRec) { + s.jStatsLock.Lock() + defer s.jStatsLock.Unlock() + s.jStats = append(s.jStats, rec) +} + +// CollectionAnomalies looks through all the statistical records and gathers any anomalies that have been found. +func (s *goRunStats) CollectionAnomalies() { + s.jStatsLock.RLock() + defer s.jStatsLock.RUnlock() + s.counts = make(map[CollectionSource]int, len(s.jStats)) + for _, c := range s.jStats { + + // Accumlate raw counts + // + s.counts[c.Source]++ + + // Look for allocated but unused collections and count them + if c.MaxSize == 0 && c.Puts == 0 { + if s.unusedCollections == nil { + s.unusedCollections = make(map[CollectionSource]int) + } + s.unusedCollections[c.Source]++ + } + if c.MaxSize > 6000 { + fmt.Println("Collection ", c.Description, "accumulated a max size of ", c.MaxSize, " - this is probably too large and indicates a poorly formed grammar") + } + } + +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/stats_data.go b/vendor/github.com/antlr4-go/antlr/v4/stats_data.go new file mode 100644 index 0000000000..4d9eb94e5f --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/stats_data.go @@ -0,0 +1,23 @@ +package antlr + +// A JStatRec is a record of a particular use of a [JStore], [JMap] or JPCMap] collection. Typically, it will be +// used to look for unused collections that wre allocated anyway, problems with hash bucket clashes, and anomalies +// such as huge numbers of Gets with no entries found GetNoEnt. You can refer to the CollectionAnomalies() function +// for ideas on what can be gleaned from these statistics about collections. +type JStatRec struct { + Source CollectionSource + MaxSize int + CurSize int + Gets int + GetHits int + GetMisses int + GetHashConflicts int + GetNoEnt int + Puts int + PutHits int + PutMisses int + PutHashConflicts int + MaxSlotSize int + Description string + CreateStack []byte +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/token.go b/vendor/github.com/antlr4-go/antlr/v4/token.go new file mode 100644 index 0000000000..9670efb829 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/token.go @@ -0,0 +1,213 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "strconv" + "strings" +) + +type TokenSourceCharStreamPair struct { + tokenSource TokenSource + charStream CharStream +} + +// A token has properties: text, type, line, character position in the line +// (so we can ignore tabs), token channel, index, and source from which +// we obtained this token. + +type Token interface { + GetSource() *TokenSourceCharStreamPair + GetTokenType() int + GetChannel() int + GetStart() int + GetStop() int + GetLine() int + GetColumn() int + + GetText() string + SetText(s string) + + GetTokenIndex() int + SetTokenIndex(v int) + + GetTokenSource() TokenSource + GetInputStream() CharStream + + String() string +} + +type BaseToken struct { + source *TokenSourceCharStreamPair + tokenType int // token type of the token + channel int // The parser ignores everything not on DEFAULT_CHANNEL + start int // optional return -1 if not implemented. + stop int // optional return -1 if not implemented. + tokenIndex int // from 0..n-1 of the token object in the input stream + line int // line=1..n of the 1st character + column int // beginning of the line at which it occurs, 0..n-1 + text string // text of the token. + readOnly bool +} + +const ( + TokenInvalidType = 0 + + // TokenEpsilon - during lookahead operations, this "token" signifies we hit the rule end [ATN] state + // and did not follow it despite needing to. + TokenEpsilon = -2 + + TokenMinUserTokenType = 1 + + TokenEOF = -1 + + // TokenDefaultChannel is the default channel upon which tokens are sent to the parser. + // + // All tokens go to the parser (unless [Skip] is called in the lexer rule) + // on a particular "channel". The parser tunes to a particular channel + // so that whitespace etc... can go to the parser on a "hidden" channel. + TokenDefaultChannel = 0 + + // TokenHiddenChannel defines the normal hidden channel - the parser wil not see tokens that are not on [TokenDefaultChannel]. + // + // Anything on a different channel than TokenDefaultChannel is not parsed by parser. + TokenHiddenChannel = 1 +) + +func (b *BaseToken) GetChannel() int { + return b.channel +} + +func (b *BaseToken) GetStart() int { + return b.start +} + +func (b *BaseToken) GetStop() int { + return b.stop +} + +func (b *BaseToken) GetLine() int { + return b.line +} + +func (b *BaseToken) GetColumn() int { + return b.column +} + +func (b *BaseToken) GetTokenType() int { + return b.tokenType +} + +func (b *BaseToken) GetSource() *TokenSourceCharStreamPair { + return b.source +} + +func (b *BaseToken) GetTokenIndex() int { + return b.tokenIndex +} + +func (b *BaseToken) SetTokenIndex(v int) { + b.tokenIndex = v +} + +func (b *BaseToken) GetTokenSource() TokenSource { + return b.source.tokenSource +} + +func (b *BaseToken) GetInputStream() CharStream { + return b.source.charStream +} + +type CommonToken struct { + BaseToken +} + +func NewCommonToken(source *TokenSourceCharStreamPair, tokenType, channel, start, stop int) *CommonToken { + + t := &CommonToken{ + BaseToken: BaseToken{ + source: source, + tokenType: tokenType, + channel: channel, + start: start, + stop: stop, + tokenIndex: -1, + }, + } + + if t.source.tokenSource != nil { + t.line = source.tokenSource.GetLine() + t.column = source.tokenSource.GetCharPositionInLine() + } else { + t.column = -1 + } + return t +} + +// An empty {@link Pair} which is used as the default value of +// {@link //source} for tokens that do not have a source. + +//CommonToken.EMPTY_SOURCE = [ nil, nil ] + +// Constructs a New{@link CommonToken} as a copy of another {@link Token}. +// +//

+// If {@code oldToken} is also a {@link CommonToken} instance, the newly +// constructed token will share a reference to the {@link //text} field and +// the {@link Pair} stored in {@link //source}. Otherwise, {@link //text} will +// be assigned the result of calling {@link //GetText}, and {@link //source} +// will be constructed from the result of {@link Token//GetTokenSource} and +// {@link Token//GetInputStream}.

+// +// @param oldToken The token to copy. +func (c *CommonToken) clone() *CommonToken { + t := NewCommonToken(c.source, c.tokenType, c.channel, c.start, c.stop) + t.tokenIndex = c.GetTokenIndex() + t.line = c.GetLine() + t.column = c.GetColumn() + t.text = c.GetText() + return t +} + +func (c *CommonToken) GetText() string { + if c.text != "" { + return c.text + } + input := c.GetInputStream() + if input == nil { + return "" + } + n := input.Size() + if c.start < n && c.stop < n { + return input.GetTextFromInterval(NewInterval(c.start, c.stop)) + } + return "" +} + +func (c *CommonToken) SetText(text string) { + c.text = text +} + +func (c *CommonToken) String() string { + txt := c.GetText() + if txt != "" { + txt = strings.Replace(txt, "\n", "\\n", -1) + txt = strings.Replace(txt, "\r", "\\r", -1) + txt = strings.Replace(txt, "\t", "\\t", -1) + } else { + txt = "" + } + + var ch string + if c.channel > 0 { + ch = ",channel=" + strconv.Itoa(c.channel) + } else { + ch = "" + } + + return "[@" + strconv.Itoa(c.tokenIndex) + "," + strconv.Itoa(c.start) + ":" + strconv.Itoa(c.stop) + "='" + + txt + "',<" + strconv.Itoa(c.tokenType) + ">" + + ch + "," + strconv.Itoa(c.line) + ":" + strconv.Itoa(c.column) + "]" +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/token_source.go b/vendor/github.com/antlr4-go/antlr/v4/token_source.go new file mode 100644 index 0000000000..a3f36eaa67 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/token_source.go @@ -0,0 +1,17 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +type TokenSource interface { + NextToken() Token + Skip() + More() + GetLine() int + GetCharPositionInLine() int + GetInputStream() CharStream + GetSourceName() string + setTokenFactory(factory TokenFactory) + GetTokenFactory() TokenFactory +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/token_stream.go b/vendor/github.com/antlr4-go/antlr/v4/token_stream.go new file mode 100644 index 0000000000..bf4ff6633e --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/token_stream.go @@ -0,0 +1,21 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +type TokenStream interface { + IntStream + + LT(k int) Token + Reset() + + Get(index int) Token + GetTokenSource() TokenSource + SetTokenSource(TokenSource) + + GetAllText() string + GetTextFromInterval(Interval) string + GetTextFromRuleContext(RuleContext) string + GetTextFromTokens(Token, Token) string +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/tokenstream_rewriter.go b/vendor/github.com/antlr4-go/antlr/v4/tokenstream_rewriter.go new file mode 100644 index 0000000000..ccf59b465c --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/tokenstream_rewriter.go @@ -0,0 +1,662 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "bytes" + "fmt" +) + +// +// Useful for rewriting out a buffered input token stream after doing some +// augmentation or other manipulations on it. + +//

+// You can insert stuff, replace, and delete chunks. Note that the operations +// are done lazily--only if you convert the buffer to a {@link String} with +// {@link TokenStream#getText()}. This is very efficient because you are not +// moving data around all the time. As the buffer of tokens is converted to +// strings, the {@link #getText()} method(s) scan the input token stream and +// check to see if there is an operation at the current index. If so, the +// operation is done and then normal {@link String} rendering continues on the +// buffer. This is like having multiple Turing machine instruction streams +// (programs) operating on a single input tape. :)

+//

+ +// This rewriter makes no modifications to the token stream. It does not ask the +// stream to fill itself up nor does it advance the input cursor. The token +// stream {@link TokenStream#index()} will return the same value before and +// after any {@link #getText()} call.

+ +//

+// The rewriter only works on tokens that you have in the buffer and ignores the +// current input cursor. If you are buffering tokens on-demand, calling +// {@link #getText()} halfway through the input will only do rewrites for those +// tokens in the first half of the file.

+ +//

+// Since the operations are done lazily at {@link #getText}-time, operations do +// not screw up the token index values. That is, an insert operation at token +// index {@code i} does not change the index values for tokens +// {@code i}+1..n-1.

+ +//

+// Because operations never actually alter the buffer, you may always get the +// original token stream back without undoing anything. Since the instructions +// are queued up, you can easily simulate transactions and roll back any changes +// if there is an error just by removing instructions. For example,

+ +// 
+// CharStream input = new ANTLRFileStream("input");
+// TLexer lex = new TLexer(input);
+// CommonTokenStream tokens = new CommonTokenStream(lex);
+// T parser = new T(tokens);
+// TokenStreamRewriter rewriter = new TokenStreamRewriter(tokens);
+// parser.startRule();
+//
+ +//

+// Then in the rules, you can execute (assuming rewriter is visible):

+ +// 
+// Token t,u;
+// ...
+// rewriter.insertAfter(t, "text to put after t");}
+// rewriter.insertAfter(u, "text after u");}
+// System.out.println(rewriter.getText());
+//
+ +//

+// You can also have multiple "instruction streams" and get multiple rewrites +// from a single pass over the input. Just name the instruction streams and use +// that name again when printing the buffer. This could be useful for generating +// a C file and also its header file--all from the same buffer:

+ +// 
+// rewriter.insertAfter("pass1", t, "text to put after t");}
+// rewriter.insertAfter("pass2", u, "text after u");}
+// System.out.println(rewriter.getText("pass1"));
+// System.out.println(rewriter.getText("pass2"));
+//
+ +//

+// If you don't use named rewrite streams, a "default" stream is used as the +// first example shows.

+ +const ( + DefaultProgramName = "default" + ProgramInitSize = 100 + MinTokenIndex = 0 +) + +// Define the rewrite operation hierarchy + +type RewriteOperation interface { + + // Execute the rewrite operation by possibly adding to the buffer. + // Return the index of the next token to operate on. + Execute(buffer *bytes.Buffer) int + String() string + GetInstructionIndex() int + GetIndex() int + GetText() string + GetOpName() string + GetTokens() TokenStream + SetInstructionIndex(val int) + SetIndex(int) + SetText(string) + SetOpName(string) + SetTokens(TokenStream) +} + +type BaseRewriteOperation struct { + //Current index of rewrites list + instructionIndex int + //Token buffer index + index int + //Substitution text + text string + //Actual operation name + opName string + //Pointer to token steam + tokens TokenStream +} + +func (op *BaseRewriteOperation) GetInstructionIndex() int { + return op.instructionIndex +} + +func (op *BaseRewriteOperation) GetIndex() int { + return op.index +} + +func (op *BaseRewriteOperation) GetText() string { + return op.text +} + +func (op *BaseRewriteOperation) GetOpName() string { + return op.opName +} + +func (op *BaseRewriteOperation) GetTokens() TokenStream { + return op.tokens +} + +func (op *BaseRewriteOperation) SetInstructionIndex(val int) { + op.instructionIndex = val +} + +func (op *BaseRewriteOperation) SetIndex(val int) { + op.index = val +} + +func (op *BaseRewriteOperation) SetText(val string) { + op.text = val +} + +func (op *BaseRewriteOperation) SetOpName(val string) { + op.opName = val +} + +func (op *BaseRewriteOperation) SetTokens(val TokenStream) { + op.tokens = val +} + +func (op *BaseRewriteOperation) Execute(_ *bytes.Buffer) int { + return op.index +} + +func (op *BaseRewriteOperation) String() string { + return fmt.Sprintf("<%s@%d:\"%s\">", + op.opName, + op.tokens.Get(op.GetIndex()), + op.text, + ) + +} + +type InsertBeforeOp struct { + BaseRewriteOperation +} + +func NewInsertBeforeOp(index int, text string, stream TokenStream) *InsertBeforeOp { + return &InsertBeforeOp{BaseRewriteOperation: BaseRewriteOperation{ + index: index, + text: text, + opName: "InsertBeforeOp", + tokens: stream, + }} +} + +func (op *InsertBeforeOp) Execute(buffer *bytes.Buffer) int { + buffer.WriteString(op.text) + if op.tokens.Get(op.index).GetTokenType() != TokenEOF { + buffer.WriteString(op.tokens.Get(op.index).GetText()) + } + return op.index + 1 +} + +func (op *InsertBeforeOp) String() string { + return op.BaseRewriteOperation.String() +} + +// InsertAfterOp distinguishes between insert after/before to do the "insert after" instructions +// first and then the "insert before" instructions at same index. Implementation +// of "insert after" is "insert before index+1". +type InsertAfterOp struct { + BaseRewriteOperation +} + +func NewInsertAfterOp(index int, text string, stream TokenStream) *InsertAfterOp { + return &InsertAfterOp{ + BaseRewriteOperation: BaseRewriteOperation{ + index: index + 1, + text: text, + tokens: stream, + }, + } +} + +func (op *InsertAfterOp) Execute(buffer *bytes.Buffer) int { + buffer.WriteString(op.text) + if op.tokens.Get(op.index).GetTokenType() != TokenEOF { + buffer.WriteString(op.tokens.Get(op.index).GetText()) + } + return op.index + 1 +} + +func (op *InsertAfterOp) String() string { + return op.BaseRewriteOperation.String() +} + +// ReplaceOp tries to replace range from x..y with (y-x)+1 ReplaceOp +// instructions. +type ReplaceOp struct { + BaseRewriteOperation + LastIndex int +} + +func NewReplaceOp(from, to int, text string, stream TokenStream) *ReplaceOp { + return &ReplaceOp{ + BaseRewriteOperation: BaseRewriteOperation{ + index: from, + text: text, + opName: "ReplaceOp", + tokens: stream, + }, + LastIndex: to, + } +} + +func (op *ReplaceOp) Execute(buffer *bytes.Buffer) int { + if op.text != "" { + buffer.WriteString(op.text) + } + return op.LastIndex + 1 +} + +func (op *ReplaceOp) String() string { + if op.text == "" { + return fmt.Sprintf("", + op.tokens.Get(op.index), op.tokens.Get(op.LastIndex)) + } + return fmt.Sprintf("", + op.tokens.Get(op.index), op.tokens.Get(op.LastIndex), op.text) +} + +type TokenStreamRewriter struct { + //Our source stream + tokens TokenStream + // You may have multiple, named streams of rewrite operations. + // I'm calling these things "programs." + // Maps String (name) → rewrite (List) + programs map[string][]RewriteOperation + lastRewriteTokenIndexes map[string]int +} + +func NewTokenStreamRewriter(tokens TokenStream) *TokenStreamRewriter { + return &TokenStreamRewriter{ + tokens: tokens, + programs: map[string][]RewriteOperation{ + DefaultProgramName: make([]RewriteOperation, 0, ProgramInitSize), + }, + lastRewriteTokenIndexes: map[string]int{}, + } +} + +func (tsr *TokenStreamRewriter) GetTokenStream() TokenStream { + return tsr.tokens +} + +// Rollback the instruction stream for a program so that +// the indicated instruction (via instructionIndex) is no +// longer in the stream. UNTESTED! +func (tsr *TokenStreamRewriter) Rollback(programName string, instructionIndex int) { + is, ok := tsr.programs[programName] + if ok { + tsr.programs[programName] = is[MinTokenIndex:instructionIndex] + } +} + +func (tsr *TokenStreamRewriter) RollbackDefault(instructionIndex int) { + tsr.Rollback(DefaultProgramName, instructionIndex) +} + +// DeleteProgram Reset the program so that no instructions exist +func (tsr *TokenStreamRewriter) DeleteProgram(programName string) { + tsr.Rollback(programName, MinTokenIndex) //TODO: double test on that cause lower bound is not included +} + +func (tsr *TokenStreamRewriter) DeleteProgramDefault() { + tsr.DeleteProgram(DefaultProgramName) +} + +func (tsr *TokenStreamRewriter) InsertAfter(programName string, index int, text string) { + // to insert after, just insert before next index (even if past end) + var op RewriteOperation = NewInsertAfterOp(index, text, tsr.tokens) + rewrites := tsr.GetProgram(programName) + op.SetInstructionIndex(len(rewrites)) + tsr.AddToProgram(programName, op) +} + +func (tsr *TokenStreamRewriter) InsertAfterDefault(index int, text string) { + tsr.InsertAfter(DefaultProgramName, index, text) +} + +func (tsr *TokenStreamRewriter) InsertAfterToken(programName string, token Token, text string) { + tsr.InsertAfter(programName, token.GetTokenIndex(), text) +} + +func (tsr *TokenStreamRewriter) InsertBefore(programName string, index int, text string) { + var op RewriteOperation = NewInsertBeforeOp(index, text, tsr.tokens) + rewrites := tsr.GetProgram(programName) + op.SetInstructionIndex(len(rewrites)) + tsr.AddToProgram(programName, op) +} + +func (tsr *TokenStreamRewriter) InsertBeforeDefault(index int, text string) { + tsr.InsertBefore(DefaultProgramName, index, text) +} + +func (tsr *TokenStreamRewriter) InsertBeforeToken(programName string, token Token, text string) { + tsr.InsertBefore(programName, token.GetTokenIndex(), text) +} + +func (tsr *TokenStreamRewriter) Replace(programName string, from, to int, text string) { + if from > to || from < 0 || to < 0 || to >= tsr.tokens.Size() { + panic(fmt.Sprintf("replace: range invalid: %d..%d(size=%d)", + from, to, tsr.tokens.Size())) + } + var op RewriteOperation = NewReplaceOp(from, to, text, tsr.tokens) + rewrites := tsr.GetProgram(programName) + op.SetInstructionIndex(len(rewrites)) + tsr.AddToProgram(programName, op) +} + +func (tsr *TokenStreamRewriter) ReplaceDefault(from, to int, text string) { + tsr.Replace(DefaultProgramName, from, to, text) +} + +func (tsr *TokenStreamRewriter) ReplaceDefaultPos(index int, text string) { + tsr.ReplaceDefault(index, index, text) +} + +func (tsr *TokenStreamRewriter) ReplaceToken(programName string, from, to Token, text string) { + tsr.Replace(programName, from.GetTokenIndex(), to.GetTokenIndex(), text) +} + +func (tsr *TokenStreamRewriter) ReplaceTokenDefault(from, to Token, text string) { + tsr.ReplaceToken(DefaultProgramName, from, to, text) +} + +func (tsr *TokenStreamRewriter) ReplaceTokenDefaultPos(index Token, text string) { + tsr.ReplaceTokenDefault(index, index, text) +} + +func (tsr *TokenStreamRewriter) Delete(programName string, from, to int) { + tsr.Replace(programName, from, to, "") +} + +func (tsr *TokenStreamRewriter) DeleteDefault(from, to int) { + tsr.Delete(DefaultProgramName, from, to) +} + +func (tsr *TokenStreamRewriter) DeleteDefaultPos(index int) { + tsr.DeleteDefault(index, index) +} + +func (tsr *TokenStreamRewriter) DeleteToken(programName string, from, to Token) { + tsr.ReplaceToken(programName, from, to, "") +} + +func (tsr *TokenStreamRewriter) DeleteTokenDefault(from, to Token) { + tsr.DeleteToken(DefaultProgramName, from, to) +} + +func (tsr *TokenStreamRewriter) GetLastRewriteTokenIndex(programName string) int { + i, ok := tsr.lastRewriteTokenIndexes[programName] + if !ok { + return -1 + } + return i +} + +func (tsr *TokenStreamRewriter) GetLastRewriteTokenIndexDefault() int { + return tsr.GetLastRewriteTokenIndex(DefaultProgramName) +} + +func (tsr *TokenStreamRewriter) SetLastRewriteTokenIndex(programName string, i int) { + tsr.lastRewriteTokenIndexes[programName] = i +} + +func (tsr *TokenStreamRewriter) InitializeProgram(name string) []RewriteOperation { + is := make([]RewriteOperation, 0, ProgramInitSize) + tsr.programs[name] = is + return is +} + +func (tsr *TokenStreamRewriter) AddToProgram(name string, op RewriteOperation) { + is := tsr.GetProgram(name) + is = append(is, op) + tsr.programs[name] = is +} + +func (tsr *TokenStreamRewriter) GetProgram(name string) []RewriteOperation { + is, ok := tsr.programs[name] + if !ok { + is = tsr.InitializeProgram(name) + } + return is +} + +// GetTextDefault returns the text from the original tokens altered per the +// instructions given to this rewriter. +func (tsr *TokenStreamRewriter) GetTextDefault() string { + return tsr.GetText( + DefaultProgramName, + NewInterval(0, tsr.tokens.Size()-1)) +} + +// GetText returns the text from the original tokens altered per the +// instructions given to this rewriter. +func (tsr *TokenStreamRewriter) GetText(programName string, interval Interval) string { + rewrites := tsr.programs[programName] + start := interval.Start + stop := interval.Stop + // ensure start/end are in range + stop = min(stop, tsr.tokens.Size()-1) + start = max(start, 0) + if len(rewrites) == 0 { + return tsr.tokens.GetTextFromInterval(interval) // no instructions to execute + } + buf := bytes.Buffer{} + // First, optimize instruction stream + indexToOp := reduceToSingleOperationPerIndex(rewrites) + // Walk buffer, executing instructions and emitting tokens + for i := start; i <= stop && i < tsr.tokens.Size(); { + op := indexToOp[i] + delete(indexToOp, i) // remove so any left have index size-1 + t := tsr.tokens.Get(i) + if op == nil { + // no operation at that index, just dump token + if t.GetTokenType() != TokenEOF { + buf.WriteString(t.GetText()) + } + i++ // move to next token + } else { + i = op.Execute(&buf) // execute operation and skip + } + } + // include stuff after end if it's last index in buffer + // So, if they did an insertAfter(lastValidIndex, "foo"), include + // foo if end==lastValidIndex. + if stop == tsr.tokens.Size()-1 { + // Scan any remaining operations after last token + // should be included (they will be inserts). + for _, op := range indexToOp { + if op.GetIndex() >= tsr.tokens.Size()-1 { + buf.WriteString(op.GetText()) + } + } + } + return buf.String() +} + +// reduceToSingleOperationPerIndex combines operations and report invalid operations (like +// overlapping replaces that are not completed nested). Inserts to +// same index need to be combined etc... +// +// Here are the cases: +// +// I.i.u I.j.v leave alone, non-overlapping +// I.i.u I.i.v combine: Iivu +// +// R.i-j.u R.x-y.v | i-j in x-y delete first R +// R.i-j.u R.i-j.v delete first R +// R.i-j.u R.x-y.v | x-y in i-j ERROR +// R.i-j.u R.x-y.v | boundaries overlap ERROR +// +// Delete special case of replace (text==null): +// D.i-j.u D.x-y.v | boundaries overlap combine to max(min)..max(right) +// +// I.i.u R.x-y.v | i in (x+1)-y delete I (since insert before +// we're not deleting i) +// I.i.u R.x-y.v | i not in (x+1)-y leave alone, non-overlapping +// R.x-y.v I.i.u | i in x-y ERROR +// R.x-y.v I.x.u R.x-y.uv (combine, delete I) +// R.x-y.v I.i.u | i not in x-y leave alone, non-overlapping +// +// I.i.u = insert u before op @ index i +// R.x-y.u = replace x-y indexed tokens with u +// +// First we need to examine replaces. For any replace op: +// +// 1. wipe out any insertions before op within that range. +// 2. Drop any replace op before that is contained completely within +// that range. +// 3. Throw exception upon boundary overlap with any previous replace. +// +// Then we can deal with inserts: +// +// 1. for any inserts to same index, combine even if not adjacent. +// 2. for any prior replace with same left boundary, combine this +// insert with replace and delete this 'replace'. +// 3. throw exception if index in same range as previous replace +// +// Don't actually delete; make op null in list. Easier to walk list. +// Later we can throw as we add to index → op map. +// +// Note that I.2 R.2-2 will wipe out I.2 even though, technically, the +// inserted stuff would be before the 'replace' range. But, if you +// add tokens in front of a method body '{' and then delete the method +// body, I think the stuff before the '{' you added should disappear too. +// +// The func returns a map from token index to operation. +func reduceToSingleOperationPerIndex(rewrites []RewriteOperation) map[int]RewriteOperation { + // WALK REPLACES + for i := 0; i < len(rewrites); i++ { + op := rewrites[i] + if op == nil { + continue + } + rop, ok := op.(*ReplaceOp) + if !ok { + continue + } + // Wipe prior inserts within range + for j := 0; j < i && j < len(rewrites); j++ { + if iop, ok := rewrites[j].(*InsertBeforeOp); ok { + if iop.index == rop.index { + // E.g., insert before 2, delete 2..2; update replace + // text to include insert before, kill insert + rewrites[iop.instructionIndex] = nil + if rop.text != "" { + rop.text = iop.text + rop.text + } else { + rop.text = iop.text + } + } else if iop.index > rop.index && iop.index <= rop.LastIndex { + // delete insert as it's a no-op. + rewrites[iop.instructionIndex] = nil + } + } + } + // Drop any prior replaces contained within + for j := 0; j < i && j < len(rewrites); j++ { + if prevop, ok := rewrites[j].(*ReplaceOp); ok { + if prevop.index >= rop.index && prevop.LastIndex <= rop.LastIndex { + // delete replace as it's a no-op. + rewrites[prevop.instructionIndex] = nil + continue + } + // throw exception unless disjoint or identical + disjoint := prevop.LastIndex < rop.index || prevop.index > rop.LastIndex + // Delete special case of replace (text==null): + // D.i-j.u D.x-y.v | boundaries overlap combine to max(min)..max(right) + if prevop.text == "" && rop.text == "" && !disjoint { + rewrites[prevop.instructionIndex] = nil + rop.index = min(prevop.index, rop.index) + rop.LastIndex = max(prevop.LastIndex, rop.LastIndex) + } else if !disjoint { + panic("replace op boundaries of " + rop.String() + " overlap with previous " + prevop.String()) + } + } + } + } + // WALK INSERTS + for i := 0; i < len(rewrites); i++ { + op := rewrites[i] + if op == nil { + continue + } + //hack to replicate inheritance in composition + _, iok := rewrites[i].(*InsertBeforeOp) + _, aok := rewrites[i].(*InsertAfterOp) + if !iok && !aok { + continue + } + iop := rewrites[i] + // combine current insert with prior if any at same index + // deviating a bit from TokenStreamRewriter.java - hard to incorporate inheritance logic + for j := 0; j < i && j < len(rewrites); j++ { + if nextIop, ok := rewrites[j].(*InsertAfterOp); ok { + if nextIop.index == iop.GetIndex() { + iop.SetText(nextIop.text + iop.GetText()) + rewrites[j] = nil + } + } + if prevIop, ok := rewrites[j].(*InsertBeforeOp); ok { + if prevIop.index == iop.GetIndex() { + iop.SetText(iop.GetText() + prevIop.text) + rewrites[prevIop.instructionIndex] = nil + } + } + } + // look for replaces where iop.index is in range; error + for j := 0; j < i && j < len(rewrites); j++ { + if rop, ok := rewrites[j].(*ReplaceOp); ok { + if iop.GetIndex() == rop.index { + rop.text = iop.GetText() + rop.text + rewrites[i] = nil + continue + } + if iop.GetIndex() >= rop.index && iop.GetIndex() <= rop.LastIndex { + panic("insert op " + iop.String() + " within boundaries of previous " + rop.String()) + } + } + } + } + m := map[int]RewriteOperation{} + for i := 0; i < len(rewrites); i++ { + op := rewrites[i] + if op == nil { + continue + } + if _, ok := m[op.GetIndex()]; ok { + panic("should only be one op per index") + } + m[op.GetIndex()] = op + } + return m +} + +/* + Quick fixing Go lack of overloads +*/ + +func max(a, b int) int { + if a > b { + return a + } else { + return b + } +} +func min(a, b int) int { + if a < b { + return a + } else { + return b + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/trace_listener.go b/vendor/github.com/antlr4-go/antlr/v4/trace_listener.go new file mode 100644 index 0000000000..7b663bf849 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/trace_listener.go @@ -0,0 +1,32 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import "fmt" + +type TraceListener struct { + parser *BaseParser +} + +func NewTraceListener(parser *BaseParser) *TraceListener { + tl := new(TraceListener) + tl.parser = parser + return tl +} + +func (t *TraceListener) VisitErrorNode(_ ErrorNode) { +} + +func (t *TraceListener) EnterEveryRule(ctx ParserRuleContext) { + fmt.Println("enter " + t.parser.GetRuleNames()[ctx.GetRuleIndex()] + ", LT(1)=" + t.parser.input.LT(1).GetText()) +} + +func (t *TraceListener) VisitTerminal(node TerminalNode) { + fmt.Println("consume " + fmt.Sprint(node.GetSymbol()) + " rule " + t.parser.GetRuleNames()[t.parser.ctx.GetRuleIndex()]) +} + +func (t *TraceListener) ExitEveryRule(ctx ParserRuleContext) { + fmt.Println("exit " + t.parser.GetRuleNames()[ctx.GetRuleIndex()] + ", LT(1)=" + t.parser.input.LT(1).GetText()) +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/transition.go b/vendor/github.com/antlr4-go/antlr/v4/transition.go new file mode 100644 index 0000000000..313b0fc127 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/transition.go @@ -0,0 +1,439 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "fmt" + "strconv" + "strings" +) + +// atom, set, epsilon, action, predicate, rule transitions. +// +//

This is a one way link. It emanates from a state (usually via a list of +// transitions) and has a target state.

+// +//

Since we never have to change the ATN transitions once we construct it, +// the states. We'll use the term Edge for the DFA to distinguish them from +// ATN transitions.

+ +type Transition interface { + getTarget() ATNState + setTarget(ATNState) + getIsEpsilon() bool + getLabel() *IntervalSet + getSerializationType() int + Matches(int, int, int) bool +} + +type BaseTransition struct { + target ATNState + isEpsilon bool + label int + intervalSet *IntervalSet + serializationType int +} + +func NewBaseTransition(target ATNState) *BaseTransition { + + if target == nil { + panic("target cannot be nil.") + } + + t := new(BaseTransition) + + t.target = target + // Are we epsilon, action, sempred? + t.isEpsilon = false + t.intervalSet = nil + + return t +} + +func (t *BaseTransition) getTarget() ATNState { + return t.target +} + +func (t *BaseTransition) setTarget(s ATNState) { + t.target = s +} + +func (t *BaseTransition) getIsEpsilon() bool { + return t.isEpsilon +} + +func (t *BaseTransition) getLabel() *IntervalSet { + return t.intervalSet +} + +func (t *BaseTransition) getSerializationType() int { + return t.serializationType +} + +func (t *BaseTransition) Matches(_, _, _ int) bool { + panic("Not implemented") +} + +const ( + TransitionEPSILON = 1 + TransitionRANGE = 2 + TransitionRULE = 3 + TransitionPREDICATE = 4 // e.g., {isType(input.LT(1))}? + TransitionATOM = 5 + TransitionACTION = 6 + TransitionSET = 7 // ~(A|B) or ~atom, wildcard, which convert to next 2 + TransitionNOTSET = 8 + TransitionWILDCARD = 9 + TransitionPRECEDENCE = 10 +) + +//goland:noinspection GoUnusedGlobalVariable +var TransitionserializationNames = []string{ + "INVALID", + "EPSILON", + "RANGE", + "RULE", + "PREDICATE", + "ATOM", + "ACTION", + "SET", + "NOT_SET", + "WILDCARD", + "PRECEDENCE", +} + +//var TransitionserializationTypes struct { +// EpsilonTransition int +// RangeTransition int +// RuleTransition int +// PredicateTransition int +// AtomTransition int +// ActionTransition int +// SetTransition int +// NotSetTransition int +// WildcardTransition int +// PrecedencePredicateTransition int +//}{ +// TransitionEPSILON, +// TransitionRANGE, +// TransitionRULE, +// TransitionPREDICATE, +// TransitionATOM, +// TransitionACTION, +// TransitionSET, +// TransitionNOTSET, +// TransitionWILDCARD, +// TransitionPRECEDENCE +//} + +// AtomTransition +// TODO: make all transitions sets? no, should remove set edges +type AtomTransition struct { + BaseTransition +} + +func NewAtomTransition(target ATNState, intervalSet int) *AtomTransition { + t := &AtomTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionATOM, + label: intervalSet, + isEpsilon: false, + }, + } + t.intervalSet = t.makeLabel() + + return t +} + +func (t *AtomTransition) makeLabel() *IntervalSet { + s := NewIntervalSet() + s.addOne(t.label) + return s +} + +func (t *AtomTransition) Matches(symbol, _, _ int) bool { + return t.label == symbol +} + +func (t *AtomTransition) String() string { + return strconv.Itoa(t.label) +} + +type RuleTransition struct { + BaseTransition + followState ATNState + ruleIndex, precedence int +} + +func NewRuleTransition(ruleStart ATNState, ruleIndex, precedence int, followState ATNState) *RuleTransition { + return &RuleTransition{ + BaseTransition: BaseTransition{ + target: ruleStart, + isEpsilon: true, + serializationType: TransitionRULE, + }, + ruleIndex: ruleIndex, + precedence: precedence, + followState: followState, + } +} + +func (t *RuleTransition) Matches(_, _, _ int) bool { + return false +} + +type EpsilonTransition struct { + BaseTransition + outermostPrecedenceReturn int +} + +func NewEpsilonTransition(target ATNState, outermostPrecedenceReturn int) *EpsilonTransition { + return &EpsilonTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionEPSILON, + isEpsilon: true, + }, + outermostPrecedenceReturn: outermostPrecedenceReturn, + } +} + +func (t *EpsilonTransition) Matches(_, _, _ int) bool { + return false +} + +func (t *EpsilonTransition) String() string { + return "epsilon" +} + +type RangeTransition struct { + BaseTransition + start, stop int +} + +func NewRangeTransition(target ATNState, start, stop int) *RangeTransition { + t := &RangeTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionRANGE, + isEpsilon: false, + }, + start: start, + stop: stop, + } + t.intervalSet = t.makeLabel() + return t +} + +func (t *RangeTransition) makeLabel() *IntervalSet { + s := NewIntervalSet() + s.addRange(t.start, t.stop) + return s +} + +func (t *RangeTransition) Matches(symbol, _, _ int) bool { + return symbol >= t.start && symbol <= t.stop +} + +func (t *RangeTransition) String() string { + var sb strings.Builder + sb.WriteByte('\'') + sb.WriteRune(rune(t.start)) + sb.WriteString("'..'") + sb.WriteRune(rune(t.stop)) + sb.WriteByte('\'') + return sb.String() +} + +type AbstractPredicateTransition interface { + Transition + IAbstractPredicateTransitionFoo() +} + +type BaseAbstractPredicateTransition struct { + BaseTransition +} + +func NewBasePredicateTransition(target ATNState) *BaseAbstractPredicateTransition { + return &BaseAbstractPredicateTransition{ + BaseTransition: BaseTransition{ + target: target, + }, + } +} + +func (a *BaseAbstractPredicateTransition) IAbstractPredicateTransitionFoo() {} + +type PredicateTransition struct { + BaseAbstractPredicateTransition + isCtxDependent bool + ruleIndex, predIndex int +} + +func NewPredicateTransition(target ATNState, ruleIndex, predIndex int, isCtxDependent bool) *PredicateTransition { + return &PredicateTransition{ + BaseAbstractPredicateTransition: BaseAbstractPredicateTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionPREDICATE, + isEpsilon: true, + }, + }, + isCtxDependent: isCtxDependent, + ruleIndex: ruleIndex, + predIndex: predIndex, + } +} + +func (t *PredicateTransition) Matches(_, _, _ int) bool { + return false +} + +func (t *PredicateTransition) getPredicate() *Predicate { + return NewPredicate(t.ruleIndex, t.predIndex, t.isCtxDependent) +} + +func (t *PredicateTransition) String() string { + return "pred_" + strconv.Itoa(t.ruleIndex) + ":" + strconv.Itoa(t.predIndex) +} + +type ActionTransition struct { + BaseTransition + isCtxDependent bool + ruleIndex, actionIndex, predIndex int +} + +func NewActionTransition(target ATNState, ruleIndex, actionIndex int, isCtxDependent bool) *ActionTransition { + return &ActionTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionACTION, + isEpsilon: true, + }, + isCtxDependent: isCtxDependent, + ruleIndex: ruleIndex, + actionIndex: actionIndex, + } +} + +func (t *ActionTransition) Matches(_, _, _ int) bool { + return false +} + +func (t *ActionTransition) String() string { + return "action_" + strconv.Itoa(t.ruleIndex) + ":" + strconv.Itoa(t.actionIndex) +} + +type SetTransition struct { + BaseTransition +} + +func NewSetTransition(target ATNState, set *IntervalSet) *SetTransition { + t := &SetTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionSET, + }, + } + + if set != nil { + t.intervalSet = set + } else { + t.intervalSet = NewIntervalSet() + t.intervalSet.addOne(TokenInvalidType) + } + return t +} + +func (t *SetTransition) Matches(symbol, _, _ int) bool { + return t.intervalSet.contains(symbol) +} + +func (t *SetTransition) String() string { + return t.intervalSet.String() +} + +type NotSetTransition struct { + SetTransition +} + +func NewNotSetTransition(target ATNState, set *IntervalSet) *NotSetTransition { + t := &NotSetTransition{ + SetTransition: SetTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionNOTSET, + }, + }, + } + if set != nil { + t.intervalSet = set + } else { + t.intervalSet = NewIntervalSet() + t.intervalSet.addOne(TokenInvalidType) + } + + return t +} + +func (t *NotSetTransition) Matches(symbol, minVocabSymbol, maxVocabSymbol int) bool { + return symbol >= minVocabSymbol && symbol <= maxVocabSymbol && !t.intervalSet.contains(symbol) +} + +func (t *NotSetTransition) String() string { + return "~" + t.intervalSet.String() +} + +type WildcardTransition struct { + BaseTransition +} + +func NewWildcardTransition(target ATNState) *WildcardTransition { + return &WildcardTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionWILDCARD, + }, + } +} + +func (t *WildcardTransition) Matches(symbol, minVocabSymbol, maxVocabSymbol int) bool { + return symbol >= minVocabSymbol && symbol <= maxVocabSymbol +} + +func (t *WildcardTransition) String() string { + return "." +} + +type PrecedencePredicateTransition struct { + BaseAbstractPredicateTransition + precedence int +} + +func NewPrecedencePredicateTransition(target ATNState, precedence int) *PrecedencePredicateTransition { + return &PrecedencePredicateTransition{ + BaseAbstractPredicateTransition: BaseAbstractPredicateTransition{ + BaseTransition: BaseTransition{ + target: target, + serializationType: TransitionPRECEDENCE, + isEpsilon: true, + }, + }, + precedence: precedence, + } +} + +func (t *PrecedencePredicateTransition) Matches(_, _, _ int) bool { + return false +} + +func (t *PrecedencePredicateTransition) getPredicate() *PrecedencePredicate { + return NewPrecedencePredicate(t.precedence) +} + +func (t *PrecedencePredicateTransition) String() string { + return fmt.Sprint(t.precedence) + " >= _p" +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/tree.go b/vendor/github.com/antlr4-go/antlr/v4/tree.go new file mode 100644 index 0000000000..c288420fb2 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/tree.go @@ -0,0 +1,304 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +// The basic notion of a tree has a parent, a payload, and a list of children. +// It is the most abstract interface for all the trees used by ANTLR. +/// + +var TreeInvalidInterval = NewInterval(-1, -2) + +type Tree interface { + GetParent() Tree + SetParent(Tree) + GetPayload() interface{} + GetChild(i int) Tree + GetChildCount() int + GetChildren() []Tree +} + +type SyntaxTree interface { + Tree + GetSourceInterval() Interval +} + +type ParseTree interface { + SyntaxTree + Accept(Visitor ParseTreeVisitor) interface{} + GetText() string + ToStringTree([]string, Recognizer) string +} + +type RuleNode interface { + ParseTree + GetRuleContext() RuleContext +} + +type TerminalNode interface { + ParseTree + GetSymbol() Token +} + +type ErrorNode interface { + TerminalNode + + errorNode() +} + +type ParseTreeVisitor interface { + Visit(tree ParseTree) interface{} + VisitChildren(node RuleNode) interface{} + VisitTerminal(node TerminalNode) interface{} + VisitErrorNode(node ErrorNode) interface{} +} + +type BaseParseTreeVisitor struct{} + +var _ ParseTreeVisitor = &BaseParseTreeVisitor{} + +func (v *BaseParseTreeVisitor) Visit(tree ParseTree) interface{} { return tree.Accept(v) } +func (v *BaseParseTreeVisitor) VisitChildren(_ RuleNode) interface{} { return nil } +func (v *BaseParseTreeVisitor) VisitTerminal(_ TerminalNode) interface{} { return nil } +func (v *BaseParseTreeVisitor) VisitErrorNode(_ ErrorNode) interface{} { return nil } + +// TODO: Implement this? +//func (this ParseTreeVisitor) Visit(ctx) { +// if (Utils.isArray(ctx)) { +// self := this +// return ctx.map(function(child) { return VisitAtom(self, child)}) +// } else { +// return VisitAtom(this, ctx) +// } +//} +// +//func VisitAtom(Visitor, ctx) { +// if (ctx.parser == nil) { //is terminal +// return +// } +// +// name := ctx.parser.ruleNames[ctx.ruleIndex] +// funcName := "Visit" + Utils.titleCase(name) +// +// return Visitor[funcName](ctx) +//} + +type ParseTreeListener interface { + VisitTerminal(node TerminalNode) + VisitErrorNode(node ErrorNode) + EnterEveryRule(ctx ParserRuleContext) + ExitEveryRule(ctx ParserRuleContext) +} + +type BaseParseTreeListener struct{} + +var _ ParseTreeListener = &BaseParseTreeListener{} + +func (l *BaseParseTreeListener) VisitTerminal(_ TerminalNode) {} +func (l *BaseParseTreeListener) VisitErrorNode(_ ErrorNode) {} +func (l *BaseParseTreeListener) EnterEveryRule(_ ParserRuleContext) {} +func (l *BaseParseTreeListener) ExitEveryRule(_ ParserRuleContext) {} + +type TerminalNodeImpl struct { + parentCtx RuleContext + symbol Token +} + +var _ TerminalNode = &TerminalNodeImpl{} + +func NewTerminalNodeImpl(symbol Token) *TerminalNodeImpl { + tn := new(TerminalNodeImpl) + + tn.parentCtx = nil + tn.symbol = symbol + + return tn +} + +func (t *TerminalNodeImpl) GetChild(_ int) Tree { + return nil +} + +func (t *TerminalNodeImpl) GetChildren() []Tree { + return nil +} + +func (t *TerminalNodeImpl) SetChildren(_ []Tree) { + panic("Cannot set children on terminal node") +} + +func (t *TerminalNodeImpl) GetSymbol() Token { + return t.symbol +} + +func (t *TerminalNodeImpl) GetParent() Tree { + return t.parentCtx +} + +func (t *TerminalNodeImpl) SetParent(tree Tree) { + t.parentCtx = tree.(RuleContext) +} + +func (t *TerminalNodeImpl) GetPayload() interface{} { + return t.symbol +} + +func (t *TerminalNodeImpl) GetSourceInterval() Interval { + if t.symbol == nil { + return TreeInvalidInterval + } + tokenIndex := t.symbol.GetTokenIndex() + return NewInterval(tokenIndex, tokenIndex) +} + +func (t *TerminalNodeImpl) GetChildCount() int { + return 0 +} + +func (t *TerminalNodeImpl) Accept(v ParseTreeVisitor) interface{} { + return v.VisitTerminal(t) +} + +func (t *TerminalNodeImpl) GetText() string { + return t.symbol.GetText() +} + +func (t *TerminalNodeImpl) String() string { + if t.symbol.GetTokenType() == TokenEOF { + return "" + } + + return t.symbol.GetText() +} + +func (t *TerminalNodeImpl) ToStringTree(_ []string, _ Recognizer) string { + return t.String() +} + +// Represents a token that was consumed during reSynchronization +// rather than during a valid Match operation. For example, +// we will create this kind of a node during single token insertion +// and deletion as well as during "consume until error recovery set" +// upon no viable alternative exceptions. + +type ErrorNodeImpl struct { + *TerminalNodeImpl +} + +var _ ErrorNode = &ErrorNodeImpl{} + +func NewErrorNodeImpl(token Token) *ErrorNodeImpl { + en := new(ErrorNodeImpl) + en.TerminalNodeImpl = NewTerminalNodeImpl(token) + return en +} + +func (e *ErrorNodeImpl) errorNode() {} + +func (e *ErrorNodeImpl) Accept(v ParseTreeVisitor) interface{} { + return v.VisitErrorNode(e) +} + +type ParseTreeWalker struct { +} + +func NewParseTreeWalker() *ParseTreeWalker { + return new(ParseTreeWalker) +} + +// Walk performs a walk on the given parse tree starting at the root and going down recursively +// with depth-first search. On each node, [EnterRule] is called before +// recursively walking down into child nodes, then [ExitRule] is called after the recursive call to wind up. +func (p *ParseTreeWalker) Walk(listener ParseTreeListener, t Tree) { + switch tt := t.(type) { + case ErrorNode: + listener.VisitErrorNode(tt) + case TerminalNode: + listener.VisitTerminal(tt) + default: + p.EnterRule(listener, t.(RuleNode)) + for i := 0; i < t.GetChildCount(); i++ { + child := t.GetChild(i) + p.Walk(listener, child) + } + p.ExitRule(listener, t.(RuleNode)) + } +} + +// EnterRule enters a grammar rule by first triggering the generic event [ParseTreeListener].[EnterEveryRule] +// then by triggering the event specific to the given parse tree node +func (p *ParseTreeWalker) EnterRule(listener ParseTreeListener, r RuleNode) { + ctx := r.GetRuleContext().(ParserRuleContext) + listener.EnterEveryRule(ctx) + ctx.EnterRule(listener) +} + +// ExitRule exits a grammar rule by first triggering the event specific to the given parse tree node +// then by triggering the generic event [ParseTreeListener].ExitEveryRule +func (p *ParseTreeWalker) ExitRule(listener ParseTreeListener, r RuleNode) { + ctx := r.GetRuleContext().(ParserRuleContext) + ctx.ExitRule(listener) + listener.ExitEveryRule(ctx) +} + +//goland:noinspection GoUnusedGlobalVariable +var ParseTreeWalkerDefault = NewParseTreeWalker() + +type IterativeParseTreeWalker struct { + *ParseTreeWalker +} + +//goland:noinspection GoUnusedExportedFunction +func NewIterativeParseTreeWalker() *IterativeParseTreeWalker { + return new(IterativeParseTreeWalker) +} + +func (i *IterativeParseTreeWalker) Walk(listener ParseTreeListener, t Tree) { + var stack []Tree + var indexStack []int + currentNode := t + currentIndex := 0 + + for currentNode != nil { + // pre-order visit + switch tt := currentNode.(type) { + case ErrorNode: + listener.VisitErrorNode(tt) + case TerminalNode: + listener.VisitTerminal(tt) + default: + i.EnterRule(listener, currentNode.(RuleNode)) + } + // Move down to first child, if exists + if currentNode.GetChildCount() > 0 { + stack = append(stack, currentNode) + indexStack = append(indexStack, currentIndex) + currentIndex = 0 + currentNode = currentNode.GetChild(0) + continue + } + + for { + // post-order visit + if ruleNode, ok := currentNode.(RuleNode); ok { + i.ExitRule(listener, ruleNode) + } + // No parent, so no siblings + if len(stack) == 0 { + currentNode = nil + currentIndex = 0 + break + } + // Move to next sibling if possible + currentIndex++ + if stack[len(stack)-1].GetChildCount() > currentIndex { + currentNode = stack[len(stack)-1].GetChild(currentIndex) + break + } + // No next, sibling, so move up + currentNode, stack = stack[len(stack)-1], stack[:len(stack)-1] + currentIndex, indexStack = indexStack[len(indexStack)-1], indexStack[:len(indexStack)-1] + } + } +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/trees.go b/vendor/github.com/antlr4-go/antlr/v4/trees.go new file mode 100644 index 0000000000..f44c05d811 --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/trees.go @@ -0,0 +1,142 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import "fmt" + +/** A set of utility routines useful for all kinds of ANTLR trees. */ + +// TreesStringTree prints out a whole tree in LISP form. [getNodeText] is used on the +// node payloads to get the text for the nodes. Detects parse trees and extracts data appropriately. +func TreesStringTree(tree Tree, ruleNames []string, recog Recognizer) string { + + if recog != nil { + ruleNames = recog.GetRuleNames() + } + + s := TreesGetNodeText(tree, ruleNames, nil) + + s = EscapeWhitespace(s, false) + c := tree.GetChildCount() + if c == 0 { + return s + } + res := "(" + s + " " + if c > 0 { + s = TreesStringTree(tree.GetChild(0), ruleNames, nil) + res += s + } + for i := 1; i < c; i++ { + s = TreesStringTree(tree.GetChild(i), ruleNames, nil) + res += " " + s + } + res += ")" + return res +} + +func TreesGetNodeText(t Tree, ruleNames []string, recog Parser) string { + if recog != nil { + ruleNames = recog.GetRuleNames() + } + + if ruleNames != nil { + switch t2 := t.(type) { + case RuleNode: + t3 := t2.GetRuleContext() + altNumber := t3.GetAltNumber() + + if altNumber != ATNInvalidAltNumber { + return fmt.Sprintf("%s:%d", ruleNames[t3.GetRuleIndex()], altNumber) + } + return ruleNames[t3.GetRuleIndex()] + case ErrorNode: + return fmt.Sprint(t2) + case TerminalNode: + if t2.GetSymbol() != nil { + return t2.GetSymbol().GetText() + } + } + } + + // no recognition for rule names + payload := t.GetPayload() + if p2, ok := payload.(Token); ok { + return p2.GetText() + } + + return fmt.Sprint(t.GetPayload()) +} + +// TreesGetChildren returns am ordered list of all children of this node +// +//goland:noinspection GoUnusedExportedFunction +func TreesGetChildren(t Tree) []Tree { + list := make([]Tree, 0) + for i := 0; i < t.GetChildCount(); i++ { + list = append(list, t.GetChild(i)) + } + return list +} + +// TreesgetAncestors returns a list of all ancestors of this node. The first node of list is the root +// and the last node is the parent of this node. +// +//goland:noinspection GoUnusedExportedFunction +func TreesgetAncestors(t Tree) []Tree { + ancestors := make([]Tree, 0) + t = t.GetParent() + for t != nil { + f := []Tree{t} + ancestors = append(f, ancestors...) + t = t.GetParent() + } + return ancestors +} + +//goland:noinspection GoUnusedExportedFunction +func TreesFindAllTokenNodes(t ParseTree, ttype int) []ParseTree { + return TreesfindAllNodes(t, ttype, true) +} + +//goland:noinspection GoUnusedExportedFunction +func TreesfindAllRuleNodes(t ParseTree, ruleIndex int) []ParseTree { + return TreesfindAllNodes(t, ruleIndex, false) +} + +func TreesfindAllNodes(t ParseTree, index int, findTokens bool) []ParseTree { + nodes := make([]ParseTree, 0) + treesFindAllNodes(t, index, findTokens, &nodes) + return nodes +} + +func treesFindAllNodes(t ParseTree, index int, findTokens bool, nodes *[]ParseTree) { + // check this node (the root) first + + t2, ok := t.(TerminalNode) + t3, ok2 := t.(ParserRuleContext) + + if findTokens && ok { + if t2.GetSymbol().GetTokenType() == index { + *nodes = append(*nodes, t2) + } + } else if !findTokens && ok2 { + if t3.GetRuleIndex() == index { + *nodes = append(*nodes, t3) + } + } + // check children + for i := 0; i < t.GetChildCount(); i++ { + treesFindAllNodes(t.GetChild(i).(ParseTree), index, findTokens, nodes) + } +} + +//goland:noinspection GoUnusedExportedFunction +func TreesDescendants(t ParseTree) []ParseTree { + nodes := []ParseTree{t} + for i := 0; i < t.GetChildCount(); i++ { + nodes = append(nodes, TreesDescendants(t.GetChild(i).(ParseTree))...) + } + return nodes +} diff --git a/vendor/github.com/antlr4-go/antlr/v4/utils.go b/vendor/github.com/antlr4-go/antlr/v4/utils.go new file mode 100644 index 0000000000..733d7df9dc --- /dev/null +++ b/vendor/github.com/antlr4-go/antlr/v4/utils.go @@ -0,0 +1,328 @@ +// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved. +// Use of this file is governed by the BSD 3-clause license that +// can be found in the LICENSE.txt file in the project root. + +package antlr + +import ( + "bytes" + "errors" + "fmt" + "math/bits" + "os" + "strconv" + "strings" + "syscall" +) + +func intMin(a, b int) int { + if a < b { + return a + } + return b +} + +func intMax(a, b int) int { + if a > b { + return a + } + return b +} + +// A simple integer stack + +type IntStack []int + +var ErrEmptyStack = errors.New("stack is empty") + +func (s *IntStack) Pop() (int, error) { + l := len(*s) - 1 + if l < 0 { + return 0, ErrEmptyStack + } + v := (*s)[l] + *s = (*s)[0:l] + return v, nil +} + +func (s *IntStack) Push(e int) { + *s = append(*s, e) +} + +const bitsPerWord = 64 + +func indexForBit(bit int) int { + return bit / bitsPerWord +} + +//goland:noinspection GoUnusedExportedFunction,GoUnusedFunction +func wordForBit(data []uint64, bit int) uint64 { + idx := indexForBit(bit) + if idx >= len(data) { + return 0 + } + return data[idx] +} + +func maskForBit(bit int) uint64 { + return uint64(1) << (bit % bitsPerWord) +} + +func wordsNeeded(bit int) int { + return indexForBit(bit) + 1 +} + +type BitSet struct { + data []uint64 +} + +// NewBitSet creates a new bitwise set +// TODO: See if we can replace with the standard library's BitSet +func NewBitSet() *BitSet { + return &BitSet{} +} + +func (b *BitSet) add(value int) { + idx := indexForBit(value) + if idx >= len(b.data) { + size := wordsNeeded(value) + data := make([]uint64, size) + copy(data, b.data) + b.data = data + } + b.data[idx] |= maskForBit(value) +} + +func (b *BitSet) clear(index int) { + idx := indexForBit(index) + if idx >= len(b.data) { + return + } + b.data[idx] &= ^maskForBit(index) +} + +func (b *BitSet) or(set *BitSet) { + // Get min size necessary to represent the bits in both sets. + bLen := b.minLen() + setLen := set.minLen() + maxLen := intMax(bLen, setLen) + if maxLen > len(b.data) { + // Increase the size of len(b.data) to represent the bits in both sets. + data := make([]uint64, maxLen) + copy(data, b.data) + b.data = data + } + // len(b.data) is at least setLen. + for i := 0; i < setLen; i++ { + b.data[i] |= set.data[i] + } +} + +func (b *BitSet) remove(value int) { + b.clear(value) +} + +func (b *BitSet) contains(value int) bool { + idx := indexForBit(value) + if idx >= len(b.data) { + return false + } + return (b.data[idx] & maskForBit(value)) != 0 +} + +func (b *BitSet) minValue() int { + for i, v := range b.data { + if v == 0 { + continue + } + return i*bitsPerWord + bits.TrailingZeros64(v) + } + return 2147483647 +} + +func (b *BitSet) equals(other interface{}) bool { + otherBitSet, ok := other.(*BitSet) + if !ok { + return false + } + + if b == otherBitSet { + return true + } + + // We only compare set bits, so we cannot rely on the two slices having the same size. Its + // possible for two BitSets to have different slice lengths but the same set bits. So we only + // compare the relevant words and ignore the trailing zeros. + bLen := b.minLen() + otherLen := otherBitSet.minLen() + + if bLen != otherLen { + return false + } + + for i := 0; i < bLen; i++ { + if b.data[i] != otherBitSet.data[i] { + return false + } + } + + return true +} + +func (b *BitSet) minLen() int { + for i := len(b.data); i > 0; i-- { + if b.data[i-1] != 0 { + return i + } + } + return 0 +} + +func (b *BitSet) length() int { + cnt := 0 + for _, val := range b.data { + cnt += bits.OnesCount64(val) + } + return cnt +} + +func (b *BitSet) String() string { + vals := make([]string, 0, b.length()) + + for i, v := range b.data { + for v != 0 { + n := bits.TrailingZeros64(v) + vals = append(vals, strconv.Itoa(i*bitsPerWord+n)) + v &= ^(uint64(1) << n) + } + } + + return "{" + strings.Join(vals, ", ") + "}" +} + +type AltDict struct { + data map[string]interface{} +} + +func NewAltDict() *AltDict { + d := new(AltDict) + d.data = make(map[string]interface{}) + return d +} + +func (a *AltDict) Get(key string) interface{} { + key = "k-" + key + return a.data[key] +} + +func (a *AltDict) put(key string, value interface{}) { + key = "k-" + key + a.data[key] = value +} + +func (a *AltDict) values() []interface{} { + vs := make([]interface{}, len(a.data)) + i := 0 + for _, v := range a.data { + vs[i] = v + i++ + } + return vs +} + +func EscapeWhitespace(s string, escapeSpaces bool) string { + + s = strings.Replace(s, "\t", "\\t", -1) + s = strings.Replace(s, "\n", "\\n", -1) + s = strings.Replace(s, "\r", "\\r", -1) + if escapeSpaces { + s = strings.Replace(s, " ", "\u00B7", -1) + } + return s +} + +//goland:noinspection GoUnusedExportedFunction +func TerminalNodeToStringArray(sa []TerminalNode) []string { + st := make([]string, len(sa)) + + for i, s := range sa { + st[i] = fmt.Sprintf("%v", s) + } + + return st +} + +//goland:noinspection GoUnusedExportedFunction +func PrintArrayJavaStyle(sa []string) string { + var buffer bytes.Buffer + + buffer.WriteString("[") + + for i, s := range sa { + buffer.WriteString(s) + if i != len(sa)-1 { + buffer.WriteString(", ") + } + } + + buffer.WriteString("]") + + return buffer.String() +} + +// murmur hash +func murmurInit(seed int) int { + return seed +} + +func murmurUpdate(h int, value int) int { + const c1 uint32 = 0xCC9E2D51 + const c2 uint32 = 0x1B873593 + const r1 uint32 = 15 + const r2 uint32 = 13 + const m uint32 = 5 + const n uint32 = 0xE6546B64 + + k := uint32(value) + k *= c1 + k = (k << r1) | (k >> (32 - r1)) + k *= c2 + + hash := uint32(h) ^ k + hash = (hash << r2) | (hash >> (32 - r2)) + hash = hash*m + n + return int(hash) +} + +func murmurFinish(h int, numberOfWords int) int { + var hash = uint32(h) + hash ^= uint32(numberOfWords) << 2 + hash ^= hash >> 16 + hash *= 0x85ebca6b + hash ^= hash >> 13 + hash *= 0xc2b2ae35 + hash ^= hash >> 16 + + return int(hash) +} + +func isDirectory(dir string) (bool, error) { + fileInfo, err := os.Stat(dir) + if err != nil { + switch { + case errors.Is(err, syscall.ENOENT): + // The given directory does not exist, so we will try to create it + // + err = os.MkdirAll(dir, 0755) + if err != nil { + return false, err + } + + return true, nil + case err != nil: + return false, err + default: + } + } + return fileInfo.IsDir(), err +} diff --git a/vendor/github.com/google/cel-go/LICENSE b/vendor/github.com/google/cel-go/LICENSE new file mode 100644 index 0000000000..2493ed2eb4 --- /dev/null +++ b/vendor/github.com/google/cel-go/LICENSE @@ -0,0 +1,233 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +=========================================================================== +The common/types/pb/equal.go modification of proto.Equal logic +=========================================================================== +Copyright (c) 2018 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/google/cel-go/cel/BUILD.bazel b/vendor/github.com/google/cel-go/cel/BUILD.bazel new file mode 100644 index 0000000000..c12e4904da --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/BUILD.bazel @@ -0,0 +1,98 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "cel.go", + "decls.go", + "env.go", + "folding.go", + "inlining.go", + "io.go", + "library.go", + "macro.go", + "optimizer.go", + "options.go", + "program.go", + "prompt.go", + "validator.go", + ], + embedsrcs = ["//cel/templates"], + importpath = "github.com/google/cel-go/cel", + visibility = ["//visibility:public"], + deps = [ + "//checker:go_default_library", + "//checker/decls:go_default_library", + "//common:go_default_library", + "//common/ast:go_default_library", + "//common/containers:go_default_library", + "//common/decls:go_default_library", + "//common/env:go_default_library", + "//common/functions:go_default_library", + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/stdlib:go_default_library", + "//common/types:go_default_library", + "//common/types/pb:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + "//interpreter:go_default_library", + "//parser:go_default_library", + "@dev_cel_expr//:expr", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//reflect/protodesc:go_default_library", + "@org_golang_google_protobuf//reflect/protoreflect:go_default_library", + "@org_golang_google_protobuf//reflect/protoregistry:go_default_library", + "@org_golang_google_protobuf//types/descriptorpb:go_default_library", + "@org_golang_google_protobuf//types/dynamicpb:go_default_library", + "@org_golang_google_protobuf//types/known/anypb:go_default_library", + "@org_golang_google_protobuf//types/known/durationpb:go_default_library", + "@org_golang_google_protobuf//types/known/timestamppb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + srcs = [ + "cel_example_test.go", + "cel_test.go", + "decls_test.go", + "env_test.go", + "folding_test.go", + "inlining_test.go", + "io_test.go", + "optimizer_test.go", + "prompt_test.go", + "validator_test.go", + ], + data = [ + "//cel/testdata:gen_test_fds", + ], + embed = [ + ":go_default_library", + ], + embedsrcs = [ + "//cel/testdata:prompts", + ], + deps = [ + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + "//ext:go_default_library", + "//test:go_default_library", + "//test/proto2pb:go_default_library", + "//test/proto3pb:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//encoding/prototext:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/cel/cel.go b/vendor/github.com/google/cel-go/cel/cel.go new file mode 100644 index 0000000000..eb5a9f4cc5 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/cel.go @@ -0,0 +1,19 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package cel defines the top-level interface for the Common Expression Language (CEL). +// +// CEL is a non-Turing complete expression language designed to parse, check, and evaluate +// expressions against user-defined environments. +package cel diff --git a/vendor/github.com/google/cel-go/cel/decls.go b/vendor/github.com/google/cel-go/cel/decls.go new file mode 100644 index 0000000000..4d4873bd6b --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/decls.go @@ -0,0 +1,428 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "fmt" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/functions" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + + celpb "cel.dev/expr" + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +// Kind indicates a CEL type's kind which is used to differentiate quickly between simple and complex types. +type Kind = types.Kind + +const ( + // DynKind represents a dynamic type. This kind only exists at type-check time. + DynKind Kind = types.DynKind + + // AnyKind represents a google.protobuf.Any type. This kind only exists at type-check time. + AnyKind = types.AnyKind + + // BoolKind represents a boolean type. + BoolKind = types.BoolKind + + // BytesKind represents a bytes type. + BytesKind = types.BytesKind + + // DoubleKind represents a double type. + DoubleKind = types.DoubleKind + + // DurationKind represents a CEL duration type. + DurationKind = types.DurationKind + + // IntKind represents an integer type. + IntKind = types.IntKind + + // ListKind represents a list type. + ListKind = types.ListKind + + // MapKind represents a map type. + MapKind = types.MapKind + + // NullTypeKind represents a null type. + NullTypeKind = types.NullTypeKind + + // OpaqueKind represents an abstract type which has no accessible fields. + OpaqueKind = types.OpaqueKind + + // StringKind represents a string type. + StringKind = types.StringKind + + // StructKind represents a structured object with typed fields. + StructKind = types.StructKind + + // TimestampKind represents a a CEL time type. + TimestampKind = types.TimestampKind + + // TypeKind represents the CEL type. + TypeKind = types.TypeKind + + // TypeParamKind represents a parameterized type whose type name will be resolved at type-check time, if possible. + TypeParamKind = types.TypeParamKind + + // UintKind represents a uint type. + UintKind = types.UintKind +) + +var ( + // AnyType represents the google.protobuf.Any type. + AnyType = types.AnyType + // BoolType represents the bool type. + BoolType = types.BoolType + // BytesType represents the bytes type. + BytesType = types.BytesType + // DoubleType represents the double type. + DoubleType = types.DoubleType + // DurationType represents the CEL duration type. + DurationType = types.DurationType + // DynType represents a dynamic CEL type whose type will be determined at runtime from context. + DynType = types.DynType + // IntType represents the int type. + IntType = types.IntType + // NullType represents the type of a null value. + NullType = types.NullType + // StringType represents the string type. + StringType = types.StringType + // TimestampType represents the time type. + TimestampType = types.TimestampType + // TypeType represents a CEL type + TypeType = types.TypeType + // UintType represents a uint type. + UintType = types.UintType + + // function references for instantiating new types. + + // ListType creates an instances of a list type value with the provided element type. + ListType = types.NewListType + // MapType creates an instance of a map type value with the provided key and value types. + MapType = types.NewMapType + // NullableType creates an instance of a nullable type with the provided wrapped type. + // + // Note: only primitive types are supported as wrapped types. + NullableType = types.NewNullableType + // OptionalType creates an abstract parameterized type instance corresponding to CEL's notion of optional. + OptionalType = types.NewOptionalType + // OpaqueType creates an abstract parameterized type with a given name. + OpaqueType = types.NewOpaqueType + // ObjectType creates a type references to an externally defined type, e.g. a protobuf message type. + ObjectType = types.NewObjectType + // TypeParamType creates a parameterized type instance. + TypeParamType = types.NewTypeParamType +) + +// Type holds a reference to a runtime type with an optional type-checked set of type parameters. +type Type = types.Type + +// Constant creates an instances of an identifier declaration with a variable name, type, and value. +func Constant(name string, t *Type, v ref.Val) EnvOption { + return func(e *Env) (*Env, error) { + e.variables = append(e.variables, decls.NewConstant(name, t, v)) + return e, nil + } +} + +// Variable creates an instance of a variable declaration with a variable name and type. +func Variable(name string, t *Type) EnvOption { + return VariableWithDoc(name, t, "") +} + +// VariableWithDoc creates an instance of a variable declaration with a variable name, type, and doc string. +func VariableWithDoc(name string, t *Type, doc string) EnvOption { + return func(e *Env) (*Env, error) { + e.variables = append(e.variables, decls.NewVariableWithDoc(name, t, doc)) + return e, nil + } +} + +// VariableDecls configures a set of fully defined cel.VariableDecl instances in the environment. +func VariableDecls(vars ...*decls.VariableDecl) EnvOption { + return func(e *Env) (*Env, error) { + for _, v := range vars { + e.variables = append(e.variables, v) + } + return e, nil + } +} + +// Function defines a function and overloads with optional singleton or per-overload bindings. +// +// Using Function is roughly equivalent to calling Declarations() to declare the function signatures +// and Functions() to define the function bindings, if they have been defined. Specifying the +// same function name more than once will result in the aggregation of the function overloads. If any +// signatures conflict between the existing and new function definition an error will be raised. +// However, if the signatures are identical and the overload ids are the same, the redefinition will +// be considered a no-op. +// +// One key difference with using Function() is that each FunctionDecl provided will handle dynamic +// dispatch based on the type-signatures of the overloads provided which means overload resolution at +// runtime is handled out of the box rather than via a custom binding for overload resolution via +// Functions(): +// +// - Overloads are searched in the order they are declared +// - Dynamic dispatch for lists and maps is limited by inspection of the list and map contents +// +// at runtime. Empty lists and maps will result in a 'default dispatch' +// +// - In the event that a default dispatch occurs, the first overload provided is the one invoked +// +// If you intend to use overloads which differentiate based on the key or element type of a list or +// map, consider using a generic function instead: e.g. func(list(T)) or func(map(K, V)) as this +// will allow your implementation to determine how best to handle dispatch and the default behavior +// for empty lists and maps whose contents cannot be inspected. +// +// For functions which use parameterized opaque types (abstract types), consider using a singleton +// function which is capable of inspecting the contents of the type and resolving the appropriate +// overload as CEL can only make inferences by type-name regarding such types. +func Function(name string, opts ...FunctionOpt) EnvOption { + return func(e *Env) (*Env, error) { + fn, err := decls.NewFunction(name, opts...) + if err != nil { + return nil, err + } + return FunctionDecls(fn)(e) + } +} + +// OverloadSelector selects an overload associated with a given function when it returns true. +// +// Used in combination with the FunctionDecl.Subset method. +type OverloadSelector = decls.OverloadSelector + +// IncludeOverloads defines an OverloadSelector which allow-lists a set of overloads by their ids. +func IncludeOverloads(overloadIDs ...string) OverloadSelector { + return decls.IncludeOverloads(overloadIDs...) +} + +// ExcludeOverloads defines an OverloadSelector which deny-lists a set of overloads by their ids. +func ExcludeOverloads(overloadIDs ...string) OverloadSelector { + return decls.ExcludeOverloads(overloadIDs...) +} + +// FunctionDecls provides one or more fully formed function declarations to be added to the environment. +func FunctionDecls(funcs ...*decls.FunctionDecl) EnvOption { + return func(e *Env) (*Env, error) { + var err error + for _, fn := range funcs { + if existing, found := e.functions[fn.Name()]; found { + fn, err = existing.Merge(fn) + if err != nil { + return nil, err + } + } + e.functions[fn.Name()] = fn + } + return e, nil + } +} + +// FunctionOpt defines a functional option for configuring a function declaration. +type FunctionOpt = decls.FunctionOpt + +// FunctionDocs provides a general usage documentation for the function. +// +// Use OverloadExamples to provide example usage instructions for specific overloads. +func FunctionDocs(docs ...string) FunctionOpt { + return decls.FunctionDocs(docs...) +} + +// SingletonUnaryBinding creates a singleton function definition to be used for all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +func SingletonUnaryBinding(fn functions.UnaryOp, traits ...int) FunctionOpt { + return decls.SingletonUnaryBinding(fn, traits...) +} + +// SingletonBinaryImpl creates a singleton function definition to be used with all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +// +// Deprecated: use SingletonBinaryBinding +func SingletonBinaryImpl(fn functions.BinaryOp, traits ...int) FunctionOpt { + return decls.SingletonBinaryBinding(fn, traits...) +} + +// SingletonBinaryBinding creates a singleton function definition to be used with all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +func SingletonBinaryBinding(fn functions.BinaryOp, traits ...int) FunctionOpt { + return decls.SingletonBinaryBinding(fn, traits...) +} + +// SingletonFunctionImpl creates a singleton function definition to be used with all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +// +// Deprecated: use SingletonFunctionBinding +func SingletonFunctionImpl(fn functions.FunctionOp, traits ...int) FunctionOpt { + return decls.SingletonFunctionBinding(fn, traits...) +} + +// SingletonFunctionBinding creates a singleton function definition to be used with all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +func SingletonFunctionBinding(fn functions.FunctionOp, traits ...int) FunctionOpt { + return decls.SingletonFunctionBinding(fn, traits...) +} + +// DisableDeclaration disables the function signatures, effectively removing them from the type-check +// environment while preserving the runtime bindings. +func DisableDeclaration(value bool) FunctionOpt { + return decls.DisableDeclaration(value) +} + +// Overload defines a new global overload with an overload id, argument types, and result type. Through the +// use of OverloadOpt options, the overload may also be configured with a binding, an operand trait, and to +// be non-strict. +// +// Note: function bindings should be commonly configured with Overload instances whereas operand traits and +// strict-ness should be rare occurrences. +func Overload(overloadID string, args []*Type, resultType *Type, opts ...OverloadOpt) FunctionOpt { + return decls.Overload(overloadID, args, resultType, opts...) +} + +// MemberOverload defines a new receiver-style overload (or member function) with an overload id, argument types, +// and result type. Through the use of OverloadOpt options, the overload may also be configured with a binding, +// an operand trait, and to be non-strict. +// +// Note: function bindings should be commonly configured with Overload instances whereas operand traits and +// strict-ness should be rare occurrences. +func MemberOverload(overloadID string, args []*Type, resultType *Type, opts ...OverloadOpt) FunctionOpt { + return decls.MemberOverload(overloadID, args, resultType, opts...) +} + +// OverloadOpt is a functional option for configuring a function overload. +type OverloadOpt = decls.OverloadOpt + +// OverloadExamples configures an example of how to invoke the overload. +func OverloadExamples(docs ...string) OverloadOpt { + return decls.OverloadExamples(docs...) +} + +// UnaryBinding provides the implementation of a unary overload. The provided function is protected by a runtime +// type-guard which ensures runtime type agreement between the overload signature and runtime argument types. +func UnaryBinding(binding functions.UnaryOp) OverloadOpt { + return decls.UnaryBinding(binding) +} + +// BinaryBinding provides the implementation of a binary overload. The provided function is protected by a runtime +// type-guard which ensures runtime type agreement between the overload signature and runtime argument types. +func BinaryBinding(binding functions.BinaryOp) OverloadOpt { + return decls.BinaryBinding(binding) +} + +// FunctionBinding provides the implementation of a variadic overload. The provided function is protected by a runtime +// type-guard which ensures runtime type agreement between the overload signature and runtime argument types. +func FunctionBinding(binding functions.FunctionOp) OverloadOpt { + return decls.FunctionBinding(binding) +} + +// LateFunctionBinding indicates that the function has a binding which is not known at compile time. +// This is useful for functions which have side-effects or are not deterministically computable. +func LateFunctionBinding() OverloadOpt { + return decls.LateFunctionBinding() +} + +// OverloadIsNonStrict enables the function to be called with error and unknown argument values. +// +// Note: do not use this option unless absoluately necessary as it should be an uncommon feature. +func OverloadIsNonStrict() OverloadOpt { + return decls.OverloadIsNonStrict() +} + +// OverloadOperandTrait configures a set of traits which the first argument to the overload must implement in order to be +// successfully invoked. +func OverloadOperandTrait(trait int) OverloadOpt { + return decls.OverloadOperandTrait(trait) +} + +// TypeToExprType converts a CEL-native type representation to a protobuf CEL Type representation. +func TypeToExprType(t *Type) (*exprpb.Type, error) { + return types.TypeToExprType(t) +} + +// ExprTypeToType converts a protobuf CEL type representation to a CEL-native type representation. +func ExprTypeToType(t *exprpb.Type) (*Type, error) { + return types.ExprTypeToType(t) +} + +// ExprDeclToDeclaration converts a protobuf CEL declaration to a CEL-native declaration, either a Variable or Function. +func ExprDeclToDeclaration(d *exprpb.Decl) (EnvOption, error) { + return AlphaProtoAsDeclaration(d) +} + +// AlphaProtoAsDeclaration converts a v1alpha1.Decl value describing a variable or function into an EnvOption. +func AlphaProtoAsDeclaration(d *exprpb.Decl) (EnvOption, error) { + canonical := &celpb.Decl{} + if err := convertProto(d, canonical); err != nil { + return nil, err + } + return ProtoAsDeclaration(canonical) +} + +// ProtoAsDeclaration converts a canonical celpb.Decl value describing a variable or function into an EnvOption. +func ProtoAsDeclaration(d *celpb.Decl) (EnvOption, error) { + switch d.GetDeclKind().(type) { + case *celpb.Decl_Function: + overloads := d.GetFunction().GetOverloads() + opts := make([]FunctionOpt, len(overloads)) + for i, o := range overloads { + args := make([]*Type, len(o.GetParams())) + for j, p := range o.GetParams() { + a, err := types.ProtoAsType(p) + if err != nil { + return nil, err + } + args[j] = a + } + res, err := types.ProtoAsType(o.GetResultType()) + if err != nil { + return nil, err + } + if o.IsInstanceFunction { + opts[i] = decls.MemberOverload(o.GetOverloadId(), args, res) + } else { + opts[i] = decls.Overload(o.GetOverloadId(), args, res) + } + } + return Function(d.GetName(), opts...), nil + case *celpb.Decl_Ident: + t, err := types.ProtoAsType(d.GetIdent().GetType()) + if err != nil { + return nil, err + } + if d.GetIdent().GetValue() == nil { + return Variable(d.GetName(), t), nil + } + val, err := ast.ProtoConstantAsVal(d.GetIdent().GetValue()) + if err != nil { + return nil, err + } + return Constant(d.GetName(), t, val), nil + default: + return nil, fmt.Errorf("unsupported decl: %v", d) + } +} diff --git a/vendor/github.com/google/cel-go/cel/env.go b/vendor/github.com/google/cel-go/cel/env.go new file mode 100644 index 0000000000..bb3014464e --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/env.go @@ -0,0 +1,1039 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "errors" + "fmt" + "math" + "sync" + + "github.com/google/cel-go/checker" + chkdecls "github.com/google/cel-go/checker/decls" + "github.com/google/cel-go/common" + celast "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/env" + "github.com/google/cel-go/common/stdlib" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/interpreter" + "github.com/google/cel-go/parser" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + "google.golang.org/protobuf/reflect/protoreflect" +) + +// Source interface representing a user-provided expression. +type Source = common.Source + +// Ast representing the checked or unchecked expression, its source, and related metadata such as +// source position information. +type Ast struct { + source Source + impl *celast.AST +} + +// NativeRep converts the AST to a Go-native representation. +func (ast *Ast) NativeRep() *celast.AST { + if ast == nil { + return nil + } + return ast.impl +} + +// Expr returns the proto serializable instance of the parsed/checked expression. +// +// Deprecated: prefer cel.AstToCheckedExpr() or cel.AstToParsedExpr() and call GetExpr() +// the result instead. +func (ast *Ast) Expr() *exprpb.Expr { + if ast == nil { + return nil + } + pbExpr, _ := celast.ExprToProto(ast.NativeRep().Expr()) + return pbExpr +} + +// IsChecked returns whether the Ast value has been successfully type-checked. +func (ast *Ast) IsChecked() bool { + return ast.NativeRep().IsChecked() +} + +// SourceInfo returns character offset and newline position information about expression elements. +func (ast *Ast) SourceInfo() *exprpb.SourceInfo { + if ast == nil { + return nil + } + pbInfo, _ := celast.SourceInfoToProto(ast.NativeRep().SourceInfo()) + return pbInfo +} + +// ResultType returns the output type of the expression if the Ast has been type-checked, else +// returns chkdecls.Dyn as the parse step cannot infer the type. +// +// Deprecated: use OutputType +func (ast *Ast) ResultType() *exprpb.Type { + out := ast.OutputType() + t, err := TypeToExprType(out) + if err != nil { + return chkdecls.Dyn + } + return t +} + +// OutputType returns the output type of the expression if the Ast has been type-checked, else +// returns cel.DynType as the parse step cannot infer types. +func (ast *Ast) OutputType() *Type { + if ast == nil { + return types.ErrorType + } + return ast.NativeRep().GetType(ast.NativeRep().Expr().ID()) +} + +// Source returns a view of the input used to create the Ast. This source may be complete or +// constructed from the SourceInfo. +func (ast *Ast) Source() Source { + if ast == nil { + return nil + } + return ast.source +} + +// FormatType converts a type message into a string representation. +// +// Deprecated: prefer FormatCELType +func FormatType(t *exprpb.Type) string { + return checker.FormatCheckedType(t) +} + +// FormatCELType formats a cel.Type value to a string representation. +// +// The type formatting is identical to FormatType. +func FormatCELType(t *Type) string { + return checker.FormatCELType(t) +} + +// Env encapsulates the context necessary to perform parsing, type checking, or generation of +// evaluable programs for different expressions. +type Env struct { + Container *containers.Container + variables []*decls.VariableDecl + functions map[string]*decls.FunctionDecl + macros []Macro + contextProto protoreflect.MessageDescriptor + adapter types.Adapter + provider types.Provider + features map[int]bool + appliedFeatures map[int]bool + libraries map[string]SingletonLibrary + validators []ASTValidator + costOptions []checker.CostOption + + // Internal parser representation + prsr *parser.Parser + prsrOpts []parser.Option + + // Internal checker representation + chkMutex sync.Mutex + chk *checker.Env + chkErr error + chkOnce sync.Once + chkOpts []checker.Option + + // Program options tied to the environment + progOpts []ProgramOption +} + +// ToConfig produces a YAML-serializable env.Config object from the given environment. +// +// The serialized configuration value is intended to represent a baseline set of config +// options which could be used as input to an EnvOption to configure the majority of the +// environment from a file. +// +// Note: validators, features, flags, and safe-guard settings are not yet supported by +// the serialize method. Since optimizers are a separate construct from the environment +// and the standard expression components (parse, check, evalute), they are also not +// supported by the serialize method. +func (e *Env) ToConfig(name string) (*env.Config, error) { + conf := env.NewConfig(name) + // Container settings + if e.Container != containers.DefaultContainer { + conf.SetContainer(e.Container.Name()) + } + for _, typeName := range e.Container.AliasSet() { + conf.AddImports(env.NewImport(typeName)) + } + + libOverloads := map[string][]string{} + for libName, lib := range e.libraries { + // Track the options which have been configured by a library and + // then diff the library version against the configured function + // to detect incremental overloads or rewrites. + libEnv, _ := NewCustomEnv() + libEnv, _ = Lib(lib)(libEnv) + for fnName, fnDecl := range libEnv.Functions() { + if len(fnDecl.OverloadDecls()) == 0 { + continue + } + overloads, exist := libOverloads[fnName] + if !exist { + overloads = make([]string, 0, len(fnDecl.OverloadDecls())) + } + for _, o := range fnDecl.OverloadDecls() { + overloads = append(overloads, o.ID()) + } + libOverloads[fnName] = overloads + } + subsetLib, canSubset := lib.(LibrarySubsetter) + alias := "" + if aliasLib, canAlias := lib.(LibraryAliaser); canAlias { + alias = aliasLib.LibraryAlias() + libName = alias + } + if libName == "stdlib" && canSubset { + conf.SetStdLib(subsetLib.LibrarySubset()) + continue + } + version := uint32(math.MaxUint32) + if versionLib, isVersioned := lib.(LibraryVersioner); isVersioned { + version = versionLib.LibraryVersion() + } + conf.AddExtensions(env.NewExtension(libName, version)) + } + + // If this is a custom environment without the standard env, mark the stdlib as disabled. + if conf.StdLib == nil && !e.HasLibrary("cel.lib.std") { + conf.SetStdLib(env.NewLibrarySubset().SetDisabled(true)) + } + + // Serialize the variables + vars := make([]*decls.VariableDecl, 0, len(e.Variables())) + stdTypeVars := map[string]*decls.VariableDecl{} + for _, v := range stdlib.Types() { + stdTypeVars[v.Name()] = v + } + for _, v := range e.Variables() { + if _, isStdType := stdTypeVars[v.Name()]; isStdType { + continue + } + vars = append(vars, v) + } + if e.contextProto != nil { + conf.SetContextVariable(env.NewContextVariable(string(e.contextProto.FullName()))) + skipVariables := map[string]bool{} + fields := e.contextProto.Fields() + for i := 0; i < fields.Len(); i++ { + field := fields.Get(i) + variable, err := fieldToVariable(field) + if err != nil { + return nil, fmt.Errorf("could not serialize context field variable %q, reason: %w", field.FullName(), err) + } + skipVariables[variable.Name()] = true + } + for _, v := range vars { + if _, found := skipVariables[v.Name()]; !found { + conf.AddVariableDecls(v) + } + } + } else { + conf.AddVariableDecls(vars...) + } + + // Serialize functions which are distinct from the ones configured by libraries. + for fnName, fnDecl := range e.Functions() { + if excludedOverloads, found := libOverloads[fnName]; found { + if newDecl := fnDecl.Subset(decls.ExcludeOverloads(excludedOverloads...)); newDecl != nil { + conf.AddFunctionDecls(newDecl) + } + } else { + conf.AddFunctionDecls(fnDecl) + } + } + + // Serialize validators + for _, val := range e.Validators() { + // Only add configurable validators to the env.Config as all others are + // expected to be implicitly enabled via extension libraries. + if confVal, ok := val.(ConfigurableASTValidator); ok { + conf.AddValidators(confVal.ToConfig()) + } + } + + // Serialize features + for featID, enabled := range e.features { + featName, found := featureNameByID(featID) + if !found { + // If the feature isn't named, it isn't intended to be publicly exposed + continue + } + conf.AddFeatures(env.NewFeature(featName, enabled)) + } + + return conf, nil +} + +// NewEnv creates a program environment configured with the standard library of CEL functions and +// macros. The Env value returned can parse and check any CEL program which builds upon the core +// features documented in the CEL specification. +// +// See the EnvOption helper functions for the options that can be used to configure the +// environment. +func NewEnv(opts ...EnvOption) (*Env, error) { + // Extend the statically configured standard environment, disabling eager validation to ensure + // the cost of setup for the environment is still just as cheap as it is in v0.11.x and earlier + // releases. The user provided options can easily re-enable the eager validation as they are + // processed after this default option. + stdOpts := append([]EnvOption{EagerlyValidateDeclarations(false)}, opts...) + env, err := getStdEnv() + if err != nil { + return nil, err + } + return env.Extend(stdOpts...) +} + +// NewCustomEnv creates a custom program environment which is not automatically configured with the +// standard library of functions and macros documented in the CEL spec. +// +// The purpose for using a custom environment might be for subsetting the standard library produced +// by the cel.StdLib() function. Subsetting CEL is a core aspect of its design that allows users to +// limit the compute and memory impact of a CEL program by controlling the functions and macros +// that may appear in a given expression. +// +// See the EnvOption helper functions for the options that can be used to configure the +// environment. +func NewCustomEnv(opts ...EnvOption) (*Env, error) { + registry, err := types.NewRegistry() + if err != nil { + return nil, err + } + return (&Env{ + variables: []*decls.VariableDecl{}, + functions: map[string]*decls.FunctionDecl{}, + macros: []parser.Macro{}, + Container: containers.DefaultContainer, + adapter: registry, + provider: registry, + features: map[int]bool{}, + appliedFeatures: map[int]bool{}, + libraries: map[string]SingletonLibrary{}, + validators: []ASTValidator{}, + progOpts: []ProgramOption{}, + costOptions: []checker.CostOption{}, + }).configure(opts) +} + +// Check performs type-checking on the input Ast and yields a checked Ast and/or set of Issues. +// If any `ASTValidators` are configured on the environment, they will be applied after a valid +// type-check result. If any issues are detected, the validators will provide them on the +// output Issues object. +// +// Either checking or validation has failed if the returned Issues value and its Issues.Err() +// value are non-nil. Issues should be inspected if they are non-nil, but may not represent a +// fatal error. +// +// It is possible to have both non-nil Ast and Issues values returned from this call: however, +// the mere presence of an Ast does not imply that it is valid for use. +func (e *Env) Check(ast *Ast) (*Ast, *Issues) { + // Construct the internal checker env, erroring if there is an issue adding the declarations. + chk, err := e.initChecker() + if err != nil { + errs := common.NewErrors(ast.Source()) + errs.ReportErrorString(common.NoLocation, err.Error()) + return nil, NewIssuesWithSourceInfo(errs, ast.NativeRep().SourceInfo()) + } + + checked, errs := checker.Check(ast.NativeRep(), ast.Source(), chk) + if len(errs.GetErrors()) > 0 { + return nil, NewIssuesWithSourceInfo(errs, ast.NativeRep().SourceInfo()) + } + // Manually create the Ast to ensure that the Ast source information (which may be more + // detailed than the information provided by Check), is returned to the caller. + ast = &Ast{ + source: ast.Source(), + impl: checked} + + // Avoid creating a validator config if it's not needed. + if len(e.validators) == 0 { + return ast, nil + } + + // Generate a validator configuration from the set of configured validators. + vConfig := newValidatorConfig() + for _, v := range e.validators { + if cv, ok := v.(ASTValidatorConfigurer); ok { + cv.Configure(vConfig) + } + } + // Apply additional validators on the type-checked result. + iss := NewIssuesWithSourceInfo(errs, ast.NativeRep().SourceInfo()) + for _, v := range e.validators { + v.Validate(e, vConfig, checked, iss) + } + if iss.Err() != nil { + return nil, iss + } + return ast, nil +} + +// Compile combines the Parse and Check phases CEL program compilation to produce an Ast and +// associated issues. +// +// If an error is encountered during parsing the Compile step will not continue with the Check +// phase. If non-error issues are encountered during Parse, they may be combined with any issues +// discovered during Check. +// +// Note, for parse-only uses of CEL use Parse. +func (e *Env) Compile(txt string) (*Ast, *Issues) { + return e.CompileSource(common.NewTextSource(txt)) +} + +// CompileSource combines the Parse and Check phases CEL program compilation to produce an Ast and +// associated issues. +// +// If an error is encountered during parsing the CompileSource step will not continue with the +// Check phase. If non-error issues are encountered during Parse, they may be combined with any +// issues discovered during Check. +// +// Note, for parse-only uses of CEL use Parse. +func (e *Env) CompileSource(src Source) (*Ast, *Issues) { + ast, iss := e.ParseSource(src) + if iss.Err() != nil { + return nil, iss + } + checked, iss2 := e.Check(ast) + if iss2.Err() != nil { + return nil, iss2 + } + return checked, iss2 +} + +// Extend the current environment with additional options to produce a new Env. +// +// Note, the extended Env value should not share memory with the original. It is possible, however, +// that a CustomTypeAdapter or CustomTypeProvider options could provide values which are mutable. +// To ensure separation of state between extended environments either make sure the TypeAdapter and +// TypeProvider are immutable, or that their underlying implementations are based on the +// ref.TypeRegistry which provides a Copy method which will be invoked by this method. +func (e *Env) Extend(opts ...EnvOption) (*Env, error) { + chk, chkErr := e.getCheckerOrError() + if chkErr != nil { + return nil, chkErr + } + + prsrOptsCopy := make([]parser.Option, len(e.prsrOpts)) + copy(prsrOptsCopy, e.prsrOpts) + + // The type-checker is configured with Declarations. The declarations may either be provided + // as options which have not yet been validated, or may come from a previous checker instance + // whose types have already been validated. + chkOptsCopy := make([]checker.Option, len(e.chkOpts)) + copy(chkOptsCopy, e.chkOpts) + + // Copy the declarations if needed. + if chk != nil { + // If the type-checker has already been instantiated, then the e.declarations have been + // validated within the chk instance. + chkOptsCopy = append(chkOptsCopy, checker.ValidatedDeclarations(chk)) + } + varsCopy := make([]*decls.VariableDecl, len(e.variables)) + copy(varsCopy, e.variables) + + // Copy macros and program options + macsCopy := make([]parser.Macro, len(e.macros)) + progOptsCopy := make([]ProgramOption, len(e.progOpts)) + copy(macsCopy, e.macros) + copy(progOptsCopy, e.progOpts) + + // Copy the adapter / provider if they appear to be mutable. + adapter := e.adapter + provider := e.provider + adapterReg, isAdapterReg := e.adapter.(*types.Registry) + providerReg, isProviderReg := e.provider.(*types.Registry) + // In most cases the provider and adapter will be a ref.TypeRegistry; + // however, in the rare cases where they are not, they are assumed to + // be immutable. Since it is possible to set the TypeProvider separately + // from the TypeAdapter, the possible configurations which could use a + // TypeRegistry as the base implementation are captured below. + if isAdapterReg && isProviderReg { + reg := providerReg.Copy() + provider = reg + // If the adapter and provider are the same object, set the adapter + // to the same ref.TypeRegistry as the provider. + if adapterReg == providerReg { + adapter = reg + } else { + // Otherwise, make a copy of the adapter. + adapter = adapterReg.Copy() + } + } else if isProviderReg { + provider = providerReg.Copy() + } else if isAdapterReg { + adapter = adapterReg.Copy() + } + + featuresCopy := make(map[int]bool, len(e.features)) + for k, v := range e.features { + featuresCopy[k] = v + } + appliedFeaturesCopy := make(map[int]bool, len(e.appliedFeatures)) + for k, v := range e.appliedFeatures { + appliedFeaturesCopy[k] = v + } + funcsCopy := make(map[string]*decls.FunctionDecl, len(e.functions)) + for k, v := range e.functions { + funcsCopy[k] = v + } + libsCopy := make(map[string]SingletonLibrary, len(e.libraries)) + for k, v := range e.libraries { + libsCopy[k] = v + } + validatorsCopy := make([]ASTValidator, len(e.validators)) + copy(validatorsCopy, e.validators) + costOptsCopy := make([]checker.CostOption, len(e.costOptions)) + copy(costOptsCopy, e.costOptions) + + ext := &Env{ + Container: e.Container, + variables: varsCopy, + functions: funcsCopy, + macros: macsCopy, + contextProto: e.contextProto, + progOpts: progOptsCopy, + adapter: adapter, + features: featuresCopy, + appliedFeatures: appliedFeaturesCopy, + libraries: libsCopy, + validators: validatorsCopy, + provider: provider, + chkOpts: chkOptsCopy, + prsrOpts: prsrOptsCopy, + costOptions: costOptsCopy, + } + return ext.configure(opts) +} + +// HasFeature checks whether the environment enables the given feature +// flag, as enumerated in options.go. +func (e *Env) HasFeature(flag int) bool { + enabled, has := e.features[flag] + return has && enabled +} + +// HasLibrary returns whether a specific SingletonLibrary has been configured in the environment. +func (e *Env) HasLibrary(libName string) bool { + _, exists := e.libraries[libName] + return exists +} + +// Libraries returns a list of SingletonLibrary that have been configured in the environment. +func (e *Env) Libraries() []string { + libraries := make([]string, 0, len(e.libraries)) + for libName := range e.libraries { + libraries = append(libraries, libName) + } + return libraries +} + +// HasFunction returns whether a specific function has been configured in the environment +func (e *Env) HasFunction(functionName string) bool { + _, ok := e.functions[functionName] + return ok +} + +// Functions returns a shallow copy of the Functions, keyed by function name, that have been configured in the environment. +func (e *Env) Functions() map[string]*decls.FunctionDecl { + shallowCopy := make(map[string]*decls.FunctionDecl, len(e.functions)) + for nm, fn := range e.functions { + shallowCopy[nm] = fn + } + return shallowCopy +} + +// Variables returns a shallow copy of the variables associated with the environment. +func (e *Env) Variables() []*decls.VariableDecl { + shallowCopy := make([]*decls.VariableDecl, len(e.variables)) + copy(shallowCopy, e.variables) + return shallowCopy +} + +// Macros returns a shallow copy of macros associated with the environment. +func (e *Env) Macros() []Macro { + shallowCopy := make([]Macro, len(e.macros)) + copy(shallowCopy, e.macros) + return shallowCopy +} + +// HasValidator returns whether a specific ASTValidator has been configured in the environment. +func (e *Env) HasValidator(name string) bool { + for _, v := range e.validators { + if v.Name() == name { + return true + } + } + return false +} + +// Validators returns the set of ASTValidators configured on the environment. +func (e *Env) Validators() []ASTValidator { + return e.validators[:] +} + +// Parse parses the input expression value `txt` to a Ast and/or a set of Issues. +// +// This form of Parse creates a Source value for the input `txt` and forwards to the +// ParseSource method. +func (e *Env) Parse(txt string) (*Ast, *Issues) { + src := common.NewTextSource(txt) + return e.ParseSource(src) +} + +// ParseSource parses the input source to an Ast and/or set of Issues. +// +// Parsing has failed if the returned Issues value and its Issues.Err() value is non-nil. +// Issues should be inspected if they are non-nil, but may not represent a fatal error. +// +// It is possible to have both non-nil Ast and Issues values returned from this call; however, +// the mere presence of an Ast does not imply that it is valid for use. +func (e *Env) ParseSource(src Source) (*Ast, *Issues) { + parsed, errs := e.prsr.Parse(src) + if len(errs.GetErrors()) > 0 { + return nil, &Issues{errs: errs} + } + return &Ast{source: src, impl: parsed}, nil +} + +// Program generates an evaluable instance of the Ast within the environment (Env). +func (e *Env) Program(ast *Ast, opts ...ProgramOption) (Program, error) { + return e.PlanProgram(ast.NativeRep(), opts...) +} + +// PlanProgram generates an evaluable instance of the AST in the go-native representation within +// the environment (Env). +func (e *Env) PlanProgram(a *celast.AST, opts ...ProgramOption) (Program, error) { + optSet := e.progOpts + if len(opts) != 0 { + mergedOpts := []ProgramOption{} + mergedOpts = append(mergedOpts, e.progOpts...) + mergedOpts = append(mergedOpts, opts...) + optSet = mergedOpts + } + return newProgram(e, a, optSet) +} + +// CELTypeAdapter returns the `types.Adapter` configured for the environment. +func (e *Env) CELTypeAdapter() types.Adapter { + return e.adapter +} + +// CELTypeProvider returns the `types.Provider` configured for the environment. +func (e *Env) CELTypeProvider() types.Provider { + return e.provider +} + +// TypeAdapter returns the `ref.TypeAdapter` configured for the environment. +// +// Deprecated: use CELTypeAdapter() +func (e *Env) TypeAdapter() ref.TypeAdapter { + return e.adapter +} + +// TypeProvider returns the `ref.TypeProvider` configured for the environment. +// +// Deprecated: use CELTypeProvider() +func (e *Env) TypeProvider() ref.TypeProvider { + if legacyProvider, ok := e.provider.(ref.TypeProvider); ok { + return legacyProvider + } + return &interopLegacyTypeProvider{Provider: e.provider} +} + +// UnknownVars returns a PartialActivation which marks all variables declared in the Env as +// unknown AttributePattern values. +// +// Note, the UnknownVars will behave the same as an cel.NoVars() unless the PartialAttributes +// option is provided as a ProgramOption. +func (e *Env) UnknownVars() PartialActivation { + act := interpreter.EmptyActivation() + part, _ := PartialVars(act, e.computeUnknownVars(act)...) + return part +} + +// PartialVars returns a PartialActivation where all variables not in the input variable +// set, but which have been configured in the environment, are marked as unknown. +// +// The `vars` value may either be an Activation or any valid input to the cel.NewActivation call. +// +// Note, this is equivalent to calling cel.PartialVars and manually configuring the set of unknown +// variables. For more advanced use cases of partial state where portions of an object graph, rather +// than top-level variables, are missing the PartialVars() method may be a more suitable choice. +// +// Note, the PartialVars will behave the same as cel.NoVars() unless the PartialAttributes +// option is provided as a ProgramOption. +func (e *Env) PartialVars(vars any) (PartialActivation, error) { + act, err := NewActivation(vars) + if err != nil { + return nil, err + } + return PartialVars(act, e.computeUnknownVars(act)...) +} + +// ResidualAst takes an Ast and its EvalDetails to produce a new Ast which only contains the +// attribute references which are unknown. +// +// Residual expressions are beneficial in a few scenarios: +// +// - Optimizing constant expression evaluations away. +// - Indexing and pruning expressions based on known input arguments. +// - Surfacing additional requirements that are needed in order to complete an evaluation. +// - Sharing the evaluation of an expression across multiple machines/nodes. +// +// For example, if an expression targets a 'resource' and 'request' attribute and the possible +// values for the resource are known, a PartialActivation could mark the 'request' as an unknown +// interpreter.AttributePattern and the resulting ResidualAst would be reduced to only the parts +// of the expression that reference the 'request'. +// +// Note, the expression ids within the residual AST generated through this method have no +// correlation to the expression ids of the original AST. +// +// See the PartialVars helper for how to construct a PartialActivation. +// +// TODO: Consider adding an option to generate a Program.Residual to avoid round-tripping to an +// Ast format and then Program again. +func (e *Env) ResidualAst(a *Ast, details *EvalDetails) (*Ast, error) { + ast := a.NativeRep() + pruned := interpreter.PruneAst(ast.Expr(), ast.SourceInfo().MacroCalls(), details.State()) + newAST := &Ast{source: a.Source(), impl: pruned} + expr, err := AstToString(newAST) + if err != nil { + return nil, err + } + parsed, iss := e.Parse(expr) + if iss != nil && iss.Err() != nil { + return nil, iss.Err() + } + if !a.IsChecked() { + return parsed, nil + } + checked, iss := e.Check(parsed) + if iss != nil && iss.Err() != nil { + return nil, iss.Err() + } + return checked, nil +} + +// EstimateCost estimates the cost of a type checked CEL expression using the length estimates of input data and +// extension functions provided by estimator. +func (e *Env) EstimateCost(ast *Ast, estimator checker.CostEstimator, opts ...checker.CostOption) (checker.CostEstimate, error) { + extendedOpts := make([]checker.CostOption, 0, len(e.costOptions)) + extendedOpts = append(extendedOpts, opts...) + extendedOpts = append(extendedOpts, e.costOptions...) + return checker.Cost(ast.NativeRep(), estimator, extendedOpts...) +} + +// configure applies a series of EnvOptions to the current environment. +func (e *Env) configure(opts []EnvOption) (*Env, error) { + // Customized the environment using the provided EnvOption values. If an error is + // generated at any step this, will be returned as a nil Env with a non-nil error. + var err error + for _, opt := range opts { + e, err = opt(e) + if err != nil { + return nil, err + } + } + + // If the default UTC timezone has been disabled, configure the legacy overloads + if utcTime, isSet := e.features[featureDefaultUTCTimeZone]; isSet && !utcTime { + if !e.appliedFeatures[featureDefaultUTCTimeZone] { + e.appliedFeatures[featureDefaultUTCTimeZone] = true + e, err = Lib(timeLegacyLibrary{})(e) + if err != nil { + return nil, err + } + } + } + + // Configure the parser. + prsrOpts := []parser.Option{} + prsrOpts = append(prsrOpts, e.prsrOpts...) + prsrOpts = append(prsrOpts, parser.Macros(e.macros...)) + + if e.HasFeature(featureEnableMacroCallTracking) { + prsrOpts = append(prsrOpts, parser.PopulateMacroCalls(true)) + } + if e.HasFeature(featureVariadicLogicalASTs) { + prsrOpts = append(prsrOpts, parser.EnableVariadicOperatorASTs(true)) + } + if e.HasFeature(featureIdentEscapeSyntax) { + prsrOpts = append(prsrOpts, parser.EnableIdentEscapeSyntax(true)) + } + e.prsr, err = parser.NewParser(prsrOpts...) + if err != nil { + return nil, err + } + + // Ensure that the checker init happens eagerly rather than lazily. + if e.HasFeature(featureEagerlyValidateDeclarations) { + _, err := e.initChecker() + if err != nil { + return nil, err + } + } + + return e, nil +} + +func (e *Env) initChecker() (*checker.Env, error) { + e.chkOnce.Do(func() { + chkOpts := []checker.Option{} + chkOpts = append(chkOpts, e.chkOpts...) + chkOpts = append(chkOpts, + checker.CrossTypeNumericComparisons( + e.HasFeature(featureCrossTypeNumericComparisons))) + + ce, err := checker.NewEnv(e.Container, e.provider, chkOpts...) + if err != nil { + e.setCheckerOrError(nil, err) + return + } + // Add the statically configured declarations. + err = ce.AddIdents(e.variables...) + if err != nil { + e.setCheckerOrError(nil, err) + return + } + // Add the function declarations which are derived from the FunctionDecl instances. + for _, fn := range e.functions { + if fn.IsDeclarationDisabled() { + continue + } + err = ce.AddFunctions(fn) + if err != nil { + e.setCheckerOrError(nil, err) + return + } + } + // Add function declarations here separately. + e.setCheckerOrError(ce, nil) + }) + return e.getCheckerOrError() +} + +// setCheckerOrError sets the checker.Env or error state in a concurrency-safe manner +func (e *Env) setCheckerOrError(chk *checker.Env, chkErr error) { + e.chkMutex.Lock() + e.chk = chk + e.chkErr = chkErr + e.chkMutex.Unlock() +} + +// getCheckerOrError gets the checker.Env or error state in a concurrency-safe manner +func (e *Env) getCheckerOrError() (*checker.Env, error) { + e.chkMutex.Lock() + defer e.chkMutex.Unlock() + return e.chk, e.chkErr +} + +// computeUnknownVars determines a set of missing variables based on the input activation and the +// environment's configured declaration set. +func (e *Env) computeUnknownVars(vars Activation) []*interpreter.AttributePattern { + var unknownPatterns []*interpreter.AttributePattern + for _, v := range e.variables { + varName := v.Name() + if _, found := vars.ResolveName(varName); found { + continue + } + unknownPatterns = append(unknownPatterns, interpreter.NewAttributePattern(varName)) + } + return unknownPatterns +} + +// Error type which references an expression id, a location within source, and a message. +type Error = common.Error + +// Issues defines methods for inspecting the error details of parse and check calls. +// +// Note: in the future, non-fatal warnings and notices may be inspectable via the Issues struct. +type Issues struct { + errs *common.Errors + info *celast.SourceInfo +} + +// NewIssues returns an Issues struct from a common.Errors object. +func NewIssues(errs *common.Errors) *Issues { + return NewIssuesWithSourceInfo(errs, nil) +} + +// NewIssuesWithSourceInfo returns an Issues struct from a common.Errors object with SourceInfo metatata +// which can be used with the `ReportErrorAtID` method for additional error reports within the context +// information that's inferred from an expression id. +func NewIssuesWithSourceInfo(errs *common.Errors, info *celast.SourceInfo) *Issues { + return &Issues{ + errs: errs, + info: info, + } +} + +// Err returns an error value if the issues list contains one or more errors. +func (i *Issues) Err() error { + if i == nil { + return nil + } + if len(i.Errors()) > 0 { + return errors.New(i.String()) + } + return nil +} + +// Errors returns the collection of errors encountered in more granular detail. +func (i *Issues) Errors() []*Error { + if i == nil { + return []*Error{} + } + return i.errs.GetErrors() +} + +// Append collects the issues from another Issues struct into a new Issues object. +func (i *Issues) Append(other *Issues) *Issues { + if i == nil { + return other + } + if other == nil || i == other { + return i + } + return NewIssuesWithSourceInfo(i.errs.Append(other.errs.GetErrors()), i.info) +} + +// String converts the issues to a suitable display string. +func (i *Issues) String() string { + if i == nil { + return "" + } + return i.errs.ToDisplayString() +} + +// ReportErrorAtID reports an error message with an optional set of formatting arguments. +// +// The source metadata for the expression at `id`, if present, is attached to the error report. +// To ensure that source metadata is attached to error reports, use NewIssuesWithSourceInfo. +func (i *Issues) ReportErrorAtID(id int64, message string, args ...any) { + i.errs.ReportErrorAtID(id, i.info.GetStartLocation(id), message, args...) +} + +// getStdEnv lazy initializes the CEL standard environment. +func getStdEnv() (*Env, error) { + stdEnvInit.Do(func() { + stdEnv, stdEnvErr = NewCustomEnv(StdLib(), EagerlyValidateDeclarations(true)) + }) + return stdEnv, stdEnvErr +} + +// interopCELTypeProvider layers support for the types.Provider interface on top of a ref.TypeProvider. +type interopCELTypeProvider struct { + ref.TypeProvider +} + +// FindStructType returns a types.Type instance for the given fully-qualified typeName if one exists. +// +// This method proxies to the underlying ref.TypeProvider's FindType method and converts protobuf type +// into a native type representation. If the conversion fails, the type is listed as not found. +func (p *interopCELTypeProvider) FindStructType(typeName string) (*types.Type, bool) { + if et, found := p.FindType(typeName); found { + t, err := types.ExprTypeToType(et) + if err != nil { + return nil, false + } + return t, true + } + return nil, false +} + +// FindStructFieldNames returns an empty set of field for the interop provider. +// +// To inspect the field names, migrate to a `types.Provider` implementation. +func (p *interopCELTypeProvider) FindStructFieldNames(typeName string) ([]string, bool) { + return []string{}, false +} + +// FindStructFieldType returns a types.FieldType instance for the given fully-qualified typeName and field +// name, if one exists. +// +// This method proxies to the underlying ref.TypeProvider's FindFieldType method and converts protobuf type +// into a native type representation. If the conversion fails, the type is listed as not found. +func (p *interopCELTypeProvider) FindStructFieldType(structType, fieldName string) (*types.FieldType, bool) { + if ft, found := p.FindFieldType(structType, fieldName); found { + t, err := types.ExprTypeToType(ft.Type) + if err != nil { + return nil, false + } + return &types.FieldType{ + Type: t, + IsSet: ft.IsSet, + GetFrom: ft.GetFrom, + }, true + } + return nil, false +} + +// interopLegacyTypeProvider layers support for the ref.TypeProvider interface on top of a types.Provider. +type interopLegacyTypeProvider struct { + types.Provider +} + +// FindType retruns the protobuf Type representation for the input type name if one exists. +// +// This method proxies to the underlying types.Provider FindStructType method and converts the types.Type +// value to a protobuf Type representation. +// +// Failure to convert the type will result in the type not being found. +func (p *interopLegacyTypeProvider) FindType(typeName string) (*exprpb.Type, bool) { + if t, found := p.FindStructType(typeName); found { + et, err := types.TypeToExprType(t) + if err != nil { + return nil, false + } + return et, true + } + return nil, false +} + +// FindFieldType returns the protobuf-based FieldType representation for the input type name and field, +// if one exists. +// +// This call proxies to the types.Provider FindStructFieldType method and converts the types.FIeldType +// value to a protobuf-based ref.FieldType representation if found. +// +// Failure to convert the FieldType will result in the field not being found. +func (p *interopLegacyTypeProvider) FindFieldType(structType, fieldName string) (*ref.FieldType, bool) { + if cft, found := p.FindStructFieldType(structType, fieldName); found { + et, err := types.TypeToExprType(cft.Type) + if err != nil { + return nil, false + } + return &ref.FieldType{ + Type: et, + IsSet: cft.IsSet, + GetFrom: cft.GetFrom, + }, true + } + return nil, false +} + +var ( + stdEnvInit sync.Once + stdEnv *Env + stdEnvErr error +) diff --git a/vendor/github.com/google/cel-go/cel/folding.go b/vendor/github.com/google/cel-go/cel/folding.go new file mode 100644 index 0000000000..40d843ecea --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/folding.go @@ -0,0 +1,603 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "fmt" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +// ConstantFoldingOption defines a functional option for configuring constant folding. +type ConstantFoldingOption func(opt *constantFoldingOptimizer) (*constantFoldingOptimizer, error) + +// MaxConstantFoldIterations limits the number of times literals may be folding during optimization. +// +// Defaults to 100 if not set. +func MaxConstantFoldIterations(limit int) ConstantFoldingOption { + return func(opt *constantFoldingOptimizer) (*constantFoldingOptimizer, error) { + opt.maxFoldIterations = limit + return opt, nil + } +} + +// Adds an Activation which provides known values for the folding evaluator +// +// Any values the activation provides will be used by the constant folder and turned into +// literals in the AST. +// +// Defaults to the NoVars() Activation +func FoldKnownValues(knownValues Activation) ConstantFoldingOption { + return func(opt *constantFoldingOptimizer) (*constantFoldingOptimizer, error) { + if knownValues != nil { + opt.knownValues = knownValues + } else { + opt.knownValues = NoVars() + } + return opt, nil + } +} + +// NewConstantFoldingOptimizer creates an optimizer which inlines constant scalar an aggregate +// literal values within function calls and select statements with their evaluated result. +func NewConstantFoldingOptimizer(opts ...ConstantFoldingOption) (ASTOptimizer, error) { + folder := &constantFoldingOptimizer{ + maxFoldIterations: defaultMaxConstantFoldIterations, + } + var err error + for _, o := range opts { + folder, err = o(folder) + if err != nil { + return nil, err + } + } + return folder, nil +} + +type constantFoldingOptimizer struct { + maxFoldIterations int + knownValues Activation +} + +// Optimize queries the expression graph for scalar and aggregate literal expressions within call and +// select statements and then evaluates them and replaces the call site with the literal result. +// +// Note: only values which can be represented as literals in CEL syntax are supported. +func (opt *constantFoldingOptimizer) Optimize(ctx *OptimizerContext, a *ast.AST) *ast.AST { + root := ast.NavigateAST(a) + + // Walk the list of foldable expression and continue to fold until there are no more folds left. + // All of the fold candidates returned by the constantExprMatcher should succeed unless there's + // a logic bug with the selection of expressions. + constantExprMatcherCapture := func(e ast.NavigableExpr) bool { return opt.constantExprMatcher(ctx, a, e) } + foldableExprs := ast.MatchDescendants(root, constantExprMatcherCapture) + foldCount := 0 + for len(foldableExprs) != 0 && foldCount < opt.maxFoldIterations { + for _, fold := range foldableExprs { + // If the expression could be folded because it's a non-strict call, and the + // branches are pruned, continue to the next fold. + if fold.Kind() == ast.CallKind && maybePruneBranches(ctx, fold) { + continue + } + // Late-bound function calls cannot be folded. + if fold.Kind() == ast.CallKind && isLateBoundFunctionCall(ctx, a, fold) { + continue + } + // Otherwise, assume all context is needed to evaluate the expression. + err := opt.tryFold(ctx, a, fold) + // Ignore errors for identifiers, since there is no guarantee that the environment + // has a value for them. + if err != nil && fold.Kind() != ast.IdentKind { + ctx.ReportErrorAtID(fold.ID(), "constant-folding evaluation failed: %v", err.Error()) + return a + } + } + foldCount++ + foldableExprs = ast.MatchDescendants(root, constantExprMatcherCapture) + } + // Once all of the constants have been folded, try to run through the remaining comprehensions + // one last time. In this case, there's no guarantee they'll run, so we only update the + // target comprehension node with the literal value if the evaluation succeeds. + for _, compre := range ast.MatchDescendants(root, ast.KindMatcher(ast.ComprehensionKind)) { + opt.tryFold(ctx, a, compre) + } + + // If the output is a list, map, or struct which contains optional entries, then prune it + // to make sure that the optionals, if resolved, do not surface in the output literal. + pruneOptionalElements(ctx, root) + + // Ensure that all intermediate values in the folded expression can be represented as valid + // CEL literals within the AST structure. Use `PostOrderVisit` rather than `MatchDescendents` + // to avoid extra allocations during this final pass through the AST. + ast.PostOrderVisit(root, ast.NewExprVisitor(func(e ast.Expr) { + if e.Kind() != ast.LiteralKind { + return + } + val := e.AsLiteral() + adapted, err := adaptLiteral(ctx, val) + if err != nil { + ctx.ReportErrorAtID(root.ID(), "constant-folding evaluation failed: %v", err.Error()) + return + } + ctx.UpdateExpr(e, adapted) + })) + + return a +} + +// tryFold attempts to evaluate a sub-expression to a literal. +// +// If the evaluation succeeds, the input expr value will be modified to become a literal, otherwise +// the method will return an error. +func (opt *constantFoldingOptimizer) tryFold(ctx *OptimizerContext, a *ast.AST, expr ast.Expr) error { + // Assume all context is needed to evaluate the expression. + subAST := &Ast{ + impl: ast.NewCheckedAST(ast.NewAST(expr, a.SourceInfo()), a.TypeMap(), a.ReferenceMap()), + } + prg, err := ctx.Program(subAST) + if err != nil { + return err + } + activation := opt.knownValues + if activation == nil { + activation = NoVars() + } + out, _, err := prg.Eval(activation) + if err != nil { + return err + } + // Update the fold expression to be a literal. + ctx.UpdateExpr(expr, ctx.NewLiteral(out)) + return nil +} + +func isLateBoundFunctionCall(ctx *OptimizerContext, a *ast.AST, expr ast.Expr) bool { + call := expr.AsCall() + function := ctx.Functions()[call.FunctionName()] + if function == nil { + return false + } + return function.HasLateBinding() +} + +// maybePruneBranches inspects the non-strict call expression to determine whether +// a branch can be removed. Evaluation will naturally prune logical and / or calls, +// but conditional will not be pruned cleanly, so this is one small area where the +// constant folding step reimplements a portion of the evaluator. +func maybePruneBranches(ctx *OptimizerContext, expr ast.NavigableExpr) bool { + call := expr.AsCall() + args := call.Args() + switch call.FunctionName() { + case operators.LogicalAnd, operators.LogicalOr: + return maybeShortcircuitLogic(ctx, call.FunctionName(), args, expr) + case operators.Conditional: + cond := args[0] + truthy := args[1] + falsy := args[2] + if cond.Kind() != ast.LiteralKind { + return false + } + if cond.AsLiteral() == types.True { + ctx.UpdateExpr(expr, truthy) + } else { + ctx.UpdateExpr(expr, falsy) + } + return true + case operators.In: + haystack := args[1] + if haystack.Kind() == ast.ListKind && haystack.AsList().Size() == 0 { + ctx.UpdateExpr(expr, ctx.NewLiteral(types.False)) + return true + } + needle := args[0] + if needle.Kind() == ast.LiteralKind && haystack.Kind() == ast.ListKind { + needleValue := needle.AsLiteral() + list := haystack.AsList() + for _, e := range list.Elements() { + if e.Kind() == ast.LiteralKind && e.AsLiteral().Equal(needleValue) == types.True { + ctx.UpdateExpr(expr, ctx.NewLiteral(types.True)) + return true + } + } + } + } + return false +} + +func maybeShortcircuitLogic(ctx *OptimizerContext, function string, args []ast.Expr, expr ast.NavigableExpr) bool { + shortcircuit := types.False + skip := types.True + if function == operators.LogicalOr { + shortcircuit = types.True + skip = types.False + } + newArgs := []ast.Expr{} + for _, arg := range args { + if arg.Kind() != ast.LiteralKind { + newArgs = append(newArgs, arg) + continue + } + if arg.AsLiteral() == skip { + continue + } + if arg.AsLiteral() == shortcircuit { + ctx.UpdateExpr(expr, arg) + return true + } + } + if len(newArgs) == 0 { + newArgs = append(newArgs, args[0]) + ctx.UpdateExpr(expr, newArgs[0]) + return true + } + if len(newArgs) == 1 { + ctx.UpdateExpr(expr, newArgs[0]) + return true + } + ctx.UpdateExpr(expr, ctx.NewCall(function, newArgs...)) + return true +} + +// pruneOptionalElements works from the bottom up to resolve optional elements within +// aggregate literals. +// +// Note, many aggregate literals will be resolved as arguments to functions or select +// statements, so this method exists to handle the case where the literal could not be +// fully resolved or exists outside of a call, select, or comprehension context. +func pruneOptionalElements(ctx *OptimizerContext, root ast.NavigableExpr) { + aggregateLiterals := ast.MatchDescendants(root, aggregateLiteralMatcher) + for _, lit := range aggregateLiterals { + switch lit.Kind() { + case ast.ListKind: + pruneOptionalListElements(ctx, lit) + case ast.MapKind: + pruneOptionalMapEntries(ctx, lit) + case ast.StructKind: + pruneOptionalStructFields(ctx, lit) + } + } +} + +func pruneOptionalListElements(ctx *OptimizerContext, e ast.Expr) { + l := e.AsList() + elems := l.Elements() + optIndices := l.OptionalIndices() + if len(optIndices) == 0 { + return + } + updatedElems := []ast.Expr{} + updatedIndices := []int32{} + newOptIndex := -1 + for _, e := range elems { + newOptIndex++ + if !l.IsOptional(int32(newOptIndex)) { + updatedElems = append(updatedElems, e) + continue + } + if e.Kind() != ast.LiteralKind { + updatedElems = append(updatedElems, e) + updatedIndices = append(updatedIndices, int32(newOptIndex)) + continue + } + optElemVal, ok := e.AsLiteral().(*types.Optional) + if !ok { + updatedElems = append(updatedElems, e) + updatedIndices = append(updatedIndices, int32(newOptIndex)) + continue + } + if !optElemVal.HasValue() { + newOptIndex-- // Skipping causes the list to get smaller. + continue + } + ctx.UpdateExpr(e, ctx.NewLiteral(optElemVal.GetValue())) + updatedElems = append(updatedElems, e) + } + ctx.UpdateExpr(e, ctx.NewList(updatedElems, updatedIndices)) +} + +func pruneOptionalMapEntries(ctx *OptimizerContext, e ast.Expr) { + m := e.AsMap() + entries := m.Entries() + updatedEntries := []ast.EntryExpr{} + modified := false + for _, e := range entries { + entry := e.AsMapEntry() + key := entry.Key() + val := entry.Value() + // If the entry is not optional, or the value-side of the optional hasn't + // been resolved to a literal, then preserve the entry as-is. + if !entry.IsOptional() || val.Kind() != ast.LiteralKind { + updatedEntries = append(updatedEntries, e) + continue + } + optElemVal, ok := val.AsLiteral().(*types.Optional) + if !ok { + updatedEntries = append(updatedEntries, e) + continue + } + // When the key is not a literal, but the value is, then it needs to be + // restored to an optional value. + if key.Kind() != ast.LiteralKind { + undoOptVal, err := adaptLiteral(ctx, optElemVal) + if err != nil { + ctx.ReportErrorAtID(val.ID(), "invalid map value literal %v: %v", optElemVal, err) + } + ctx.UpdateExpr(val, undoOptVal) + updatedEntries = append(updatedEntries, e) + continue + } + modified = true + if !optElemVal.HasValue() { + continue + } + ctx.UpdateExpr(val, ctx.NewLiteral(optElemVal.GetValue())) + updatedEntry := ctx.NewMapEntry(key, val, false) + updatedEntries = append(updatedEntries, updatedEntry) + } + if modified { + ctx.UpdateExpr(e, ctx.NewMap(updatedEntries)) + } +} + +func pruneOptionalStructFields(ctx *OptimizerContext, e ast.Expr) { + s := e.AsStruct() + fields := s.Fields() + updatedFields := []ast.EntryExpr{} + modified := false + for _, f := range fields { + field := f.AsStructField() + val := field.Value() + if !field.IsOptional() || val.Kind() != ast.LiteralKind { + updatedFields = append(updatedFields, f) + continue + } + optElemVal, ok := val.AsLiteral().(*types.Optional) + if !ok { + updatedFields = append(updatedFields, f) + continue + } + modified = true + if !optElemVal.HasValue() { + continue + } + ctx.UpdateExpr(val, ctx.NewLiteral(optElemVal.GetValue())) + updatedField := ctx.NewStructField(field.Name(), val, false) + updatedFields = append(updatedFields, updatedField) + } + if modified { + ctx.UpdateExpr(e, ctx.NewStruct(s.TypeName(), updatedFields)) + } +} + +// adaptLiteral converts a runtime CEL value to its equivalent literal expression. +// +// For strongly typed values, the type-provider will be used to reconstruct the fields +// which are present in the literal and their equivalent initialization values. +func adaptLiteral(ctx *OptimizerContext, val ref.Val) (ast.Expr, error) { + switch t := val.Type().(type) { + case *types.Type: + switch t { + case types.BoolType, types.BytesType, types.DoubleType, types.IntType, + types.NullType, types.StringType, types.UintType: + return ctx.NewLiteral(val), nil + case types.DurationType: + return ctx.NewCall( + overloads.TypeConvertDuration, + ctx.NewLiteral(val.ConvertToType(types.StringType)), + ), nil + case types.TimestampType: + return ctx.NewCall( + overloads.TypeConvertTimestamp, + ctx.NewLiteral(val.ConvertToType(types.StringType)), + ), nil + case types.OptionalType: + opt := val.(*types.Optional) + if !opt.HasValue() { + return ctx.NewCall("optional.none"), nil + } + target, err := adaptLiteral(ctx, opt.GetValue()) + if err != nil { + return nil, err + } + return ctx.NewCall("optional.of", target), nil + case types.TypeType: + return ctx.NewIdent(val.(*types.Type).TypeName()), nil + case types.ListType: + l, ok := val.(traits.Lister) + if !ok { + return nil, fmt.Errorf("failed to adapt %v to literal", val) + } + elems := make([]ast.Expr, l.Size().(types.Int)) + idx := 0 + it := l.Iterator() + for it.HasNext() == types.True { + elemVal := it.Next() + elemExpr, err := adaptLiteral(ctx, elemVal) + if err != nil { + return nil, err + } + elems[idx] = elemExpr + idx++ + } + return ctx.NewList(elems, []int32{}), nil + case types.MapType: + m, ok := val.(traits.Mapper) + if !ok { + return nil, fmt.Errorf("failed to adapt %v to literal", val) + } + entries := make([]ast.EntryExpr, m.Size().(types.Int)) + idx := 0 + it := m.Iterator() + for it.HasNext() == types.True { + keyVal := it.Next() + keyExpr, err := adaptLiteral(ctx, keyVal) + if err != nil { + return nil, err + } + valVal := m.Get(keyVal) + valExpr, err := adaptLiteral(ctx, valVal) + if err != nil { + return nil, err + } + entries[idx] = ctx.NewMapEntry(keyExpr, valExpr, false) + idx++ + } + return ctx.NewMap(entries), nil + default: + provider := ctx.CELTypeProvider() + fields, found := provider.FindStructFieldNames(t.TypeName()) + if !found { + return nil, fmt.Errorf("failed to adapt %v to literal", val) + } + tester := val.(traits.FieldTester) + indexer := val.(traits.Indexer) + fieldInits := []ast.EntryExpr{} + for _, f := range fields { + field := types.String(f) + if tester.IsSet(field) != types.True { + continue + } + fieldVal := indexer.Get(field) + fieldExpr, err := adaptLiteral(ctx, fieldVal) + if err != nil { + return nil, err + } + fieldInits = append(fieldInits, ctx.NewStructField(f, fieldExpr, false)) + } + return ctx.NewStruct(t.TypeName(), fieldInits), nil + } + } + return nil, fmt.Errorf("failed to adapt %v to literal", val) +} + +// constantExprMatcher matches calls, select statements, and comprehensions whose arguments +// are all constant scalar or aggregate literal values. +// +// Only comprehensions which are not nested are included as possible constant folds, and only +// if all variables referenced in the comprehension stack exist are only iteration or +// accumulation variables. +func (opt *constantFoldingOptimizer) constantExprMatcher(ctx *OptimizerContext, a *ast.AST, e ast.NavigableExpr) bool { + switch e.Kind() { + case ast.CallKind: + return constantCallMatcher(e) + case ast.SelectKind: + sel := e.AsSelect() // guaranteed to be a navigable value + return constantMatcher(sel.Operand().(ast.NavigableExpr)) + case ast.IdentKind: + return opt.knownValues != nil && a.ReferenceMap()[e.ID()] != nil + case ast.ComprehensionKind: + if isNestedComprehension(e) { + return false + } + vars := map[string]bool{} + constantExprs := true + visitor := ast.NewExprVisitor(func(e ast.Expr) { + if e.Kind() == ast.ComprehensionKind { + nested := e.AsComprehension() + vars[nested.AccuVar()] = true + vars[nested.IterVar()] = true + } + if e.Kind() == ast.IdentKind && !vars[e.AsIdent()] { + constantExprs = false + } + // Late-bound function calls cannot be folded. + if e.Kind() == ast.CallKind && isLateBoundFunctionCall(ctx, a, e) { + constantExprs = false + } + }) + ast.PreOrderVisit(e, visitor) + return constantExprs + default: + return false + } +} + +// constantCallMatcher identifies strict and non-strict calls which can be folded. +func constantCallMatcher(e ast.NavigableExpr) bool { + call := e.AsCall() + children := e.Children() + fnName := call.FunctionName() + if fnName == operators.LogicalAnd { + for _, child := range children { + if child.Kind() == ast.LiteralKind { + return true + } + } + } + if fnName == operators.LogicalOr { + for _, child := range children { + if child.Kind() == ast.LiteralKind { + return true + } + } + } + if fnName == operators.Conditional { + cond := children[0] + if cond.Kind() == ast.LiteralKind && cond.AsLiteral().Type() == types.BoolType { + return true + } + } + if fnName == operators.In { + haystack := children[1] + if haystack.Kind() == ast.ListKind && haystack.AsList().Size() == 0 { + return true + } + needle := children[0] + if needle.Kind() == ast.LiteralKind && haystack.Kind() == ast.ListKind { + needleValue := needle.AsLiteral() + list := haystack.AsList() + for _, e := range list.Elements() { + if e.Kind() == ast.LiteralKind && e.AsLiteral().Equal(needleValue) == types.True { + return true + } + } + } + } + // convert all other calls with constant arguments + for _, child := range children { + if !constantMatcher(child) { + return false + } + } + return true +} + +func isNestedComprehension(e ast.NavigableExpr) bool { + parent, found := e.Parent() + for found { + if parent.Kind() == ast.ComprehensionKind { + return true + } + parent, found = parent.Parent() + } + return false +} + +func aggregateLiteralMatcher(e ast.NavigableExpr) bool { + return e.Kind() == ast.ListKind || e.Kind() == ast.MapKind || e.Kind() == ast.StructKind +} + +var ( + constantMatcher = ast.ConstantValueMatcher() +) + +const ( + defaultMaxConstantFoldIterations = 100 +) diff --git a/vendor/github.com/google/cel-go/cel/inlining.go b/vendor/github.com/google/cel-go/cel/inlining.go new file mode 100644 index 0000000000..a4530e19e7 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/inlining.go @@ -0,0 +1,228 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/traits" +) + +// InlineVariable holds a variable name to be matched and an AST representing +// the expression graph which should be used to replace it. +type InlineVariable struct { + name string + alias string + def *ast.AST +} + +// Name returns the qualified variable or field selection to replace. +func (v *InlineVariable) Name() string { + return v.name +} + +// Alias returns the alias to use when performing cel.bind() calls during inlining. +func (v *InlineVariable) Alias() string { + return v.alias +} + +// Expr returns the inlined expression value. +func (v *InlineVariable) Expr() ast.Expr { + return v.def.Expr() +} + +// Type indicates the inlined expression type. +func (v *InlineVariable) Type() *Type { + return v.def.GetType(v.def.Expr().ID()) +} + +// NewInlineVariable declares a variable name to be replaced by a checked expression. +func NewInlineVariable(name string, definition *Ast) *InlineVariable { + return NewInlineVariableWithAlias(name, name, definition) +} + +// NewInlineVariableWithAlias declares a variable name to be replaced by a checked expression. +// If the variable occurs more than once, the provided alias will be used to replace the expressions +// where the variable name occurs. +func NewInlineVariableWithAlias(name, alias string, definition *Ast) *InlineVariable { + return &InlineVariable{name: name, alias: alias, def: definition.NativeRep()} +} + +// NewInliningOptimizer creates and optimizer which replaces variables with expression definitions. +// +// If a variable occurs one time, the variable is replaced by the inline definition. If the +// variable occurs more than once, the variable occurences are replaced by a cel.bind() call. +func NewInliningOptimizer(inlineVars ...*InlineVariable) ASTOptimizer { + return &inliningOptimizer{variables: inlineVars} +} + +type inliningOptimizer struct { + variables []*InlineVariable +} + +func (opt *inliningOptimizer) Optimize(ctx *OptimizerContext, a *ast.AST) *ast.AST { + root := ast.NavigateAST(a) + for _, inlineVar := range opt.variables { + matches := ast.MatchDescendants(root, opt.matchVariable(inlineVar.Name())) + // Skip cases where the variable isn't in the expression graph + if len(matches) == 0 { + continue + } + + // For a single match, do a direct replacement of the expression sub-graph. + if len(matches) == 1 || !isBindable(matches, inlineVar.Expr(), inlineVar.Type()) { + for _, match := range matches { + // Copy the inlined AST expr and source info. + copyExpr := ctx.CopyASTAndMetadata(inlineVar.def) + opt.inlineExpr(ctx, match, copyExpr, inlineVar.Type()) + } + continue + } + + // For multiple matches, find the least common ancestor (lca) and insert the + // variable as a cel.bind() macro. + var lca ast.NavigableExpr = root + lcaAncestorCount := 0 + ancestors := map[int64]int{} + for _, match := range matches { + // Update the identifier matches with the provided alias. + parent, found := match, true + for found { + ancestorCount, hasAncestor := ancestors[parent.ID()] + if !hasAncestor { + ancestors[parent.ID()] = 1 + parent, found = parent.Parent() + continue + } + if lcaAncestorCount < ancestorCount || (lcaAncestorCount == ancestorCount && lca.Depth() < parent.Depth()) { + lca = parent + lcaAncestorCount = ancestorCount + } + ancestors[parent.ID()] = ancestorCount + 1 + parent, found = parent.Parent() + } + aliasExpr := ctx.NewIdent(inlineVar.Alias()) + opt.inlineExpr(ctx, match, aliasExpr, inlineVar.Type()) + } + + // Copy the inlined AST expr and source info. + copyExpr := ctx.CopyASTAndMetadata(inlineVar.def) + // Update the least common ancestor by inserting a cel.bind() call to the alias. + inlined, bindMacro := ctx.NewBindMacro(lca.ID(), inlineVar.Alias(), copyExpr, lca) + opt.inlineExpr(ctx, lca, inlined, inlineVar.Type()) + ctx.SetMacroCall(lca.ID(), bindMacro) + } + return a +} + +// inlineExpr replaces the current expression with the inlined one, unless the location of the inlining +// happens within a presence test, e.g. has(a.b.c) -> inline alpha for a.b.c in which case an attempt is +// made to determine whether the inlined value can be presence or existence tested. +func (opt *inliningOptimizer) inlineExpr(ctx *OptimizerContext, prev ast.NavigableExpr, inlined ast.Expr, inlinedType *Type) { + switch prev.Kind() { + case ast.SelectKind: + sel := prev.AsSelect() + if !sel.IsTestOnly() { + ctx.UpdateExpr(prev, inlined) + return + } + opt.rewritePresenceExpr(ctx, prev, inlined, inlinedType) + default: + ctx.UpdateExpr(prev, inlined) + } +} + +// rewritePresenceExpr converts the inlined expression, when it occurs within a has() macro, to type-safe +// expression appropriate for the inlined type, if possible. +// +// If the rewrite is not possible an error is reported at the inline expression site. +func (opt *inliningOptimizer) rewritePresenceExpr(ctx *OptimizerContext, prev, inlined ast.Expr, inlinedType *Type) { + // If the input inlined expression is not a select expression it won't work with the has() + // macro. Attempt to rewrite the presence test in terms of the typed input, otherwise error. + if inlined.Kind() == ast.SelectKind { + presenceTest, hasMacro := ctx.NewHasMacro(prev.ID(), inlined) + ctx.UpdateExpr(prev, presenceTest) + ctx.SetMacroCall(prev.ID(), hasMacro) + return + } + + ctx.ClearMacroCall(prev.ID()) + if inlinedType.IsAssignableType(NullType) { + ctx.UpdateExpr(prev, + ctx.NewCall(operators.NotEquals, + inlined, + ctx.NewLiteral(types.NullValue), + )) + return + } + if inlinedType.HasTrait(traits.SizerType) { + ctx.UpdateExpr(prev, + ctx.NewCall(operators.NotEquals, + ctx.NewMemberCall(overloads.Size, inlined), + ctx.NewLiteral(types.IntZero), + )) + return + } + ctx.ReportErrorAtID(prev.ID(), "unable to inline expression type %v into presence test", inlinedType) +} + +// isBindable indicates whether the inlined type can be used within a cel.bind() if the expression +// being replaced occurs within a presence test. Value types with a size() method or field selection +// support can be bound. +// +// In future iterations, support may also be added for indexer types which can be rewritten as an `in` +// expression; however, this would imply a rewrite of the inlined expression that may not be necessary +// in most cases. +func isBindable(matches []ast.NavigableExpr, inlined ast.Expr, inlinedType *Type) bool { + if inlinedType.IsAssignableType(NullType) || + inlinedType.HasTrait(traits.SizerType) { + return true + } + for _, m := range matches { + if m.Kind() != ast.SelectKind { + continue + } + sel := m.AsSelect() + if sel.IsTestOnly() { + return false + } + } + return true +} + +// matchVariable matches simple identifiers, select expressions, and presence test expressions +// which match the (potentially) qualified variable name provided as input. +// +// Note, this function does not support inlining against select expressions which includes optional +// field selection. This may be a future refinement. +func (opt *inliningOptimizer) matchVariable(varName string) ast.ExprMatcher { + return func(e ast.NavigableExpr) bool { + if e.Kind() == ast.IdentKind && e.AsIdent() == varName { + return true + } + if e.Kind() == ast.SelectKind { + sel := e.AsSelect() + // While the `ToQualifiedName` call could take the select directly, this + // would skip presence tests from possible matches, which we would like + // to include. + qualName, found := containers.ToQualifiedName(sel.Operand()) + return found && qualName+"."+sel.FieldName() == varName + } + return false + } +} diff --git a/vendor/github.com/google/cel-go/cel/io.go b/vendor/github.com/google/cel-go/cel/io.go new file mode 100644 index 0000000000..2e611228d9 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/io.go @@ -0,0 +1,349 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "errors" + "fmt" + "reflect" + + "google.golang.org/protobuf/proto" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" + "github.com/google/cel-go/parser" + + celpb "cel.dev/expr" + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + anypb "google.golang.org/protobuf/types/known/anypb" +) + +// CheckedExprToAst converts a checked expression proto message to an Ast. +func CheckedExprToAst(checkedExpr *exprpb.CheckedExpr) *Ast { + checked, _ := CheckedExprToAstWithSource(checkedExpr, nil) + return checked +} + +// CheckedExprToAstWithSource converts a checked expression proto message to an Ast, +// using the provided Source as the textual contents. +// +// In general the source is not necessary unless the AST has been modified between the +// `Parse` and `Check` calls as an `Ast` created from the `Parse` step will carry the source +// through future calls. +// +// Prefer CheckedExprToAst if loading expressions from storage. +func CheckedExprToAstWithSource(checkedExpr *exprpb.CheckedExpr, src Source) (*Ast, error) { + checked, err := ast.ToAST(checkedExpr) + if err != nil { + return nil, err + } + return &Ast{source: src, impl: checked}, nil +} + +// AstToCheckedExpr converts an Ast to an protobuf CheckedExpr value. +// +// If the Ast.IsChecked() returns false, this conversion method will return an error. +func AstToCheckedExpr(a *Ast) (*exprpb.CheckedExpr, error) { + if !a.IsChecked() { + return nil, fmt.Errorf("cannot convert unchecked ast") + } + return ast.ToProto(a.NativeRep()) +} + +// ParsedExprToAst converts a parsed expression proto message to an Ast. +func ParsedExprToAst(parsedExpr *exprpb.ParsedExpr) *Ast { + return ParsedExprToAstWithSource(parsedExpr, nil) +} + +// ParsedExprToAstWithSource converts a parsed expression proto message to an Ast, +// using the provided Source as the textual contents. +// +// In general you only need this if you need to recheck a previously checked +// expression, or if you need to separately check a subset of an expression. +// +// Prefer ParsedExprToAst if loading expressions from storage. +func ParsedExprToAstWithSource(parsedExpr *exprpb.ParsedExpr, src Source) *Ast { + info, _ := ast.ProtoToSourceInfo(parsedExpr.GetSourceInfo()) + if src == nil { + src = common.NewInfoSource(parsedExpr.GetSourceInfo()) + } + e, _ := ast.ProtoToExpr(parsedExpr.GetExpr()) + return &Ast{source: src, impl: ast.NewAST(e, info)} +} + +// AstToParsedExpr converts an Ast to an protobuf ParsedExpr value. +func AstToParsedExpr(a *Ast) (*exprpb.ParsedExpr, error) { + return &exprpb.ParsedExpr{ + Expr: a.Expr(), + SourceInfo: a.SourceInfo(), + }, nil +} + +// AstToString converts an Ast back to a string if possible. +// +// Note, the conversion may not be an exact replica of the original expression, but will produce +// a string that is semantically equivalent and whose textual representation is stable. +func AstToString(a *Ast) (string, error) { + return ExprToString(a.NativeRep().Expr(), a.NativeRep().SourceInfo()) +} + +// ExprToString converts an AST Expr node back to a string using macro call tracking metadata from +// source info if any macros are encountered within the expression. +func ExprToString(e ast.Expr, info *ast.SourceInfo) (string, error) { + return parser.Unparse(e, info) +} + +// RefValueToValue converts between ref.Val and google.api.expr.v1alpha1.Value. +// The result Value is the serialized proto form. The ref.Val must not be error or unknown. +func RefValueToValue(res ref.Val) (*exprpb.Value, error) { + return ValueAsAlphaProto(res) +} + +// ValueAsAlphaProto converts between ref.Val and google.api.expr.v1alpha1.Value. +// The result Value is the serialized proto form. The ref.Val must not be error or unknown. +func ValueAsAlphaProto(res ref.Val) (*exprpb.Value, error) { + canonical, err := ValueAsProto(res) + if err != nil { + return nil, err + } + alpha := &exprpb.Value{} + err = convertProto(canonical, alpha) + return alpha, err +} + +// RefValToExprValue converts between ref.Val and google.api.expr.v1alpha1.ExprValue. +// The result ExprValue is the serialized proto form. +func RefValToExprValue(res ref.Val) (*exprpb.ExprValue, error) { + return ExprValueAsAlphaProto(res) +} + +// ExprValueAsAlphaProto converts between ref.Val and google.api.expr.v1alpha1.ExprValue. +// The result ExprValue is the serialized proto form. +func ExprValueAsAlphaProto(res ref.Val) (*exprpb.ExprValue, error) { + canonical, err := ExprValueAsProto(res) + if err != nil { + return nil, err + } + alpha := &exprpb.ExprValue{} + err = convertProto(canonical, alpha) + return alpha, err +} + +// ExprValueAsProto converts between ref.Val and cel.expr.ExprValue. +// The result ExprValue is the serialized proto form. +func ExprValueAsProto(res ref.Val) (*celpb.ExprValue, error) { + switch res := res.(type) { + case *types.Unknown: + return &celpb.ExprValue{ + Kind: &celpb.ExprValue_Unknown{ + Unknown: &celpb.UnknownSet{ + Exprs: res.IDs(), + }, + }}, nil + case *types.Err: + return &celpb.ExprValue{ + Kind: &celpb.ExprValue_Error{ + Error: &celpb.ErrorSet{ + // Keeping the error code as UNKNOWN since there's no error codes associated with + // Cel-Go runtime errors. + Errors: []*celpb.Status{{Code: 2, Message: res.Error()}}, + }, + }, + }, nil + default: + val, err := ValueAsProto(res) + if err != nil { + return nil, err + } + return &celpb.ExprValue{ + Kind: &celpb.ExprValue_Value{Value: val}}, nil + } +} + +// ValueAsProto converts between ref.Val and cel.expr.Value. +// The result Value is the serialized proto form. The ref.Val must not be error or unknown. +func ValueAsProto(res ref.Val) (*celpb.Value, error) { + switch res.Type() { + case types.BoolType: + return &celpb.Value{ + Kind: &celpb.Value_BoolValue{BoolValue: res.Value().(bool)}}, nil + case types.BytesType: + return &celpb.Value{ + Kind: &celpb.Value_BytesValue{BytesValue: res.Value().([]byte)}}, nil + case types.DoubleType: + return &celpb.Value{ + Kind: &celpb.Value_DoubleValue{DoubleValue: res.Value().(float64)}}, nil + case types.IntType: + return &celpb.Value{ + Kind: &celpb.Value_Int64Value{Int64Value: res.Value().(int64)}}, nil + case types.ListType: + l := res.(traits.Lister) + sz := l.Size().(types.Int) + elts := make([]*celpb.Value, 0, int64(sz)) + for i := types.Int(0); i < sz; i++ { + v, err := ValueAsProto(l.Get(i)) + if err != nil { + return nil, err + } + elts = append(elts, v) + } + return &celpb.Value{ + Kind: &celpb.Value_ListValue{ + ListValue: &celpb.ListValue{Values: elts}}}, nil + case types.MapType: + mapper := res.(traits.Mapper) + sz := mapper.Size().(types.Int) + entries := make([]*celpb.MapValue_Entry, 0, int64(sz)) + for it := mapper.Iterator(); it.HasNext().(types.Bool); { + k := it.Next() + v := mapper.Get(k) + kv, err := ValueAsProto(k) + if err != nil { + return nil, err + } + vv, err := ValueAsProto(v) + if err != nil { + return nil, err + } + entries = append(entries, &celpb.MapValue_Entry{Key: kv, Value: vv}) + } + return &celpb.Value{ + Kind: &celpb.Value_MapValue{ + MapValue: &celpb.MapValue{Entries: entries}}}, nil + case types.NullType: + return &celpb.Value{ + Kind: &celpb.Value_NullValue{}}, nil + case types.StringType: + return &celpb.Value{ + Kind: &celpb.Value_StringValue{StringValue: res.Value().(string)}}, nil + case types.TypeType: + typeName := res.(ref.Type).TypeName() + return &celpb.Value{Kind: &celpb.Value_TypeValue{TypeValue: typeName}}, nil + case types.UintType: + return &celpb.Value{ + Kind: &celpb.Value_Uint64Value{Uint64Value: res.Value().(uint64)}}, nil + default: + any, err := res.ConvertToNative(anyPbType) + if err != nil { + return nil, err + } + return &celpb.Value{ + Kind: &celpb.Value_ObjectValue{ObjectValue: any.(*anypb.Any)}}, nil + } +} + +var ( + typeNameToTypeValue = map[string]ref.Val{ + "bool": types.BoolType, + "bytes": types.BytesType, + "double": types.DoubleType, + "null_type": types.NullType, + "int": types.IntType, + "list": types.ListType, + "map": types.MapType, + "string": types.StringType, + "type": types.TypeType, + "uint": types.UintType, + } + + anyPbType = reflect.TypeOf(&anypb.Any{}) +) + +// ValueToRefValue converts between google.api.expr.v1alpha1.Value and ref.Val. +func ValueToRefValue(adapter types.Adapter, v *exprpb.Value) (ref.Val, error) { + return AlphaProtoAsValue(adapter, v) +} + +// AlphaProtoAsValue converts between google.api.expr.v1alpha1.Value and ref.Val. +func AlphaProtoAsValue(adapter types.Adapter, v *exprpb.Value) (ref.Val, error) { + canonical := &celpb.Value{} + if err := convertProto(v, canonical); err != nil { + return nil, err + } + return ProtoAsValue(adapter, canonical) +} + +// ProtoAsValue converts between cel.expr.Value and ref.Val. +func ProtoAsValue(adapter types.Adapter, v *celpb.Value) (ref.Val, error) { + switch v.Kind.(type) { + case *celpb.Value_NullValue: + return types.NullValue, nil + case *celpb.Value_BoolValue: + return types.Bool(v.GetBoolValue()), nil + case *celpb.Value_Int64Value: + return types.Int(v.GetInt64Value()), nil + case *celpb.Value_Uint64Value: + return types.Uint(v.GetUint64Value()), nil + case *celpb.Value_DoubleValue: + return types.Double(v.GetDoubleValue()), nil + case *celpb.Value_StringValue: + return types.String(v.GetStringValue()), nil + case *celpb.Value_BytesValue: + return types.Bytes(v.GetBytesValue()), nil + case *celpb.Value_ObjectValue: + any := v.GetObjectValue() + msg, err := anypb.UnmarshalNew(any, proto.UnmarshalOptions{DiscardUnknown: true}) + if err != nil { + return nil, err + } + return adapter.NativeToValue(msg), nil + case *celpb.Value_MapValue: + m := v.GetMapValue() + entries := make(map[ref.Val]ref.Val) + for _, entry := range m.Entries { + key, err := ProtoAsValue(adapter, entry.Key) + if err != nil { + return nil, err + } + pb, err := ProtoAsValue(adapter, entry.Value) + if err != nil { + return nil, err + } + entries[key] = pb + } + return adapter.NativeToValue(entries), nil + case *celpb.Value_ListValue: + l := v.GetListValue() + elts := make([]ref.Val, len(l.Values)) + for i, e := range l.Values { + rv, err := ProtoAsValue(adapter, e) + if err != nil { + return nil, err + } + elts[i] = rv + } + return adapter.NativeToValue(elts), nil + case *celpb.Value_TypeValue: + typeName := v.GetTypeValue() + tv, ok := typeNameToTypeValue[typeName] + if ok { + return tv, nil + } + return types.NewObjectTypeValue(typeName), nil + } + return nil, errors.New("unknown value") +} + +func convertProto(src, dst proto.Message) error { + pb, err := proto.Marshal(src) + if err != nil { + return err + } + err = proto.Unmarshal(pb, dst) + return err +} diff --git a/vendor/github.com/google/cel-go/cel/library.go b/vendor/github.com/google/cel-go/cel/library.go new file mode 100644 index 0000000000..59a10e81de --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/library.go @@ -0,0 +1,871 @@ +// Copyright 2020 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "fmt" + "math" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/env" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/stdlib" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" + "github.com/google/cel-go/interpreter" + "github.com/google/cel-go/parser" +) + +const ( + optMapMacro = "optMap" + optFlatMapMacro = "optFlatMap" + hasValueFunc = "hasValue" + unwrapOptFunc = "unwrapOpt" + optionalNoneFunc = "optional.none" + optionalOfFunc = "optional.of" + optionalOfNonZeroValueFunc = "optional.ofNonZeroValue" + optionalUnwrapFunc = "optional.unwrap" + valueFunc = "value" + unusedIterVar = "#unused" +) + +// Library provides a collection of EnvOption and ProgramOption values used to configure a CEL +// environment for a particular use case or with a related set of functionality. +// +// Note, the ProgramOption values provided by a library are expected to be static and not vary +// between calls to Env.Program(). If there is a need for such dynamic configuration, prefer to +// configure these options outside the Library and within the Env.Program() call directly. +type Library interface { + // CompileOptions returns a collection of functional options for configuring the Parse / Check + // environment. + CompileOptions() []EnvOption + + // ProgramOptions returns a collection of functional options which should be included in every + // Program generated from the Env.Program() call. + ProgramOptions() []ProgramOption +} + +// SingletonLibrary refines the Library interface to ensure that libraries in this format are only +// configured once within the environment. +type SingletonLibrary interface { + Library + + // LibraryName provides a namespaced name which is used to check whether the library has already + // been configured in the environment. + LibraryName() string +} + +// LibraryAliaser generates a simple named alias for the library, for use during environment serialization. +type LibraryAliaser interface { + LibraryAlias() string +} + +// LibrarySubsetter provides the subset description associated with the library, nil if not subset. +type LibrarySubsetter interface { + LibrarySubset() *env.LibrarySubset +} + +// LibraryVersioner provides a version number for the library. +// +// If not implemented, the library version will be flagged as 'latest' during environment serialization. +type LibraryVersioner interface { + LibraryVersion() uint32 +} + +// Lib creates an EnvOption out of a Library, allowing libraries to be provided as functional args, +// and to be linked to each other. +func Lib(l Library) EnvOption { + singleton, isSingleton := l.(SingletonLibrary) + return func(e *Env) (*Env, error) { + if isSingleton { + if e.HasLibrary(singleton.LibraryName()) { + return e, nil + } + e.libraries[singleton.LibraryName()] = singleton + } + var err error + for _, opt := range l.CompileOptions() { + e, err = opt(e) + if err != nil { + return nil, err + } + } + e.progOpts = append(e.progOpts, l.ProgramOptions()...) + return e, nil + } +} + +// StdLibOption specifies a functional option for configuring the standard CEL library. +type StdLibOption func(*stdLibrary) *stdLibrary + +// StdLibSubset configures the standard library to use a subset of its functions and macros. +// +// Since the StdLib is a singleton library, only the first instance of the StdLib() environment options +// will be configured on the environment which means only the StdLibSubset() initially configured with +// the library will be used. +func StdLibSubset(subset *env.LibrarySubset) StdLibOption { + return func(lib *stdLibrary) *stdLibrary { + lib.subset = subset + return lib + } +} + +// StdLib returns an EnvOption for the standard library of CEL functions and macros. +func StdLib(opts ...StdLibOption) EnvOption { + lib := &stdLibrary{} + for _, o := range opts { + lib = o(lib) + } + return Lib(lib) +} + +// stdLibrary implements the Library interface and provides functional options for the core CEL +// features documented in the specification. +type stdLibrary struct { + subset *env.LibrarySubset +} + +// LibraryName implements the SingletonLibrary interface method. +func (*stdLibrary) LibraryName() string { + return "cel.lib.std" +} + +// LibraryAlias returns the simple name of the library. +func (*stdLibrary) LibraryAlias() string { + return "stdlib" +} + +// LibrarySubset returns the env.LibrarySubset definition associated with the CEL Library. +func (lib *stdLibrary) LibrarySubset() *env.LibrarySubset { + return lib.subset +} + +// CompileOptions returns options for the standard CEL function declarations and macros. +func (lib *stdLibrary) CompileOptions() []EnvOption { + funcs := stdlib.Functions() + macros := StandardMacros + if lib.subset != nil { + subMacros := []Macro{} + for _, m := range macros { + if lib.subset.SubsetMacro(m.Function()) { + subMacros = append(subMacros, m) + } + } + macros = subMacros + subFuncs := []*decls.FunctionDecl{} + for _, fn := range funcs { + if f, include := lib.subset.SubsetFunction(fn); include { + subFuncs = append(subFuncs, f) + } + } + funcs = subFuncs + } + return []EnvOption{ + func(e *Env) (*Env, error) { + var err error + if err = lib.subset.Validate(); err != nil { + return nil, err + } + e.variables = append(e.variables, stdlib.Types()...) + for _, fn := range funcs { + existing, found := e.functions[fn.Name()] + if found { + fn, err = existing.Merge(fn) + if err != nil { + return nil, err + } + } + e.functions[fn.Name()] = fn + } + return e, nil + }, + Macros(macros...), + } +} + +// ProgramOptions returns function implementations for the standard CEL functions. +func (*stdLibrary) ProgramOptions() []ProgramOption { + return []ProgramOption{} +} + +// OptionalTypes enable support for optional syntax and types in CEL. +// +// The optional value type makes it possible to express whether variables have +// been provided, whether a result has been computed, and in the future whether +// an object field path, map key value, or list index has a value. +// +// # Syntax Changes +// +// OptionalTypes are unlike other CEL extensions because they modify the CEL +// syntax itself, notably through the use of a `?` preceding a field name or +// index value. +// +// ## Field Selection +// +// The optional syntax in field selection is denoted as `obj.?field`. In other +// words, if a field is set, return `optional.of(obj.field)“, else +// `optional.none()`. The optional field selection is viral in the sense that +// after the first optional selection all subsequent selections or indices +// are treated as optional, i.e. the following expressions are equivalent: +// +// obj.?field.subfield +// obj.?field.?subfield +// +// ## Indexing +// +// Similar to field selection, the optional syntax can be used in index +// expressions on maps and lists: +// +// list[?0] +// map[?key] +// +// ## Optional Field Setting +// +// When creating map or message literals, if a field may be optionally set +// based on its presence, then placing a `?` before the field name or key +// will ensure the type on the right-hand side must be optional(T) where T +// is the type of the field or key-value. +// +// The following returns a map with the key expression set only if the +// subfield is present, otherwise an empty map is created: +// +// {?key: obj.?field.subfield} +// +// ## Optional Element Setting +// +// When creating list literals, an element in the list may be optionally added +// when the element expression is preceded by a `?`: +// +// [a, ?b, ?c] // return a list with either [a], [a, b], [a, b, c], or [a, c] +// +// # Optional.Of +// +// Create an optional(T) value of a given value with type T. +// +// optional.of(10) +// +// # Optional.OfNonZeroValue +// +// Create an optional(T) value of a given value with type T if it is not a +// zero-value. A zero-value the default empty value for any given CEL type, +// including empty protobuf message types. If the value is empty, the result +// of this call will be optional.none(). +// +// optional.ofNonZeroValue([1, 2, 3]) // optional(list(int)) +// optional.ofNonZeroValue([]) // optional.none() +// optional.ofNonZeroValue(0) // optional.none() +// optional.ofNonZeroValue("") // optional.none() +// +// # Optional.None +// +// Create an empty optional value. +// +// # HasValue +// +// Determine whether the optional contains a value. +// +// optional.of(b'hello').hasValue() // true +// optional.ofNonZeroValue({}).hasValue() // false +// +// # Value +// +// Get the value contained by the optional. If the optional does not have a +// value, the result will be a CEL error. +// +// optional.of(b'hello').value() // b'hello' +// optional.ofNonZeroValue({}).value() // error +// +// # Or +// +// If the value on the left-hand side is optional.none(), the optional value +// on the right hand side is returned. If the value on the left-hand set is +// valued, then it is returned. This operation is short-circuiting and will +// only evaluate as many links in the `or` chain as are needed to return a +// non-empty optional value. +// +// obj.?field.or(m[?key]) +// l[?index].or(obj.?field.subfield).or(obj.?other) +// +// # OrValue +// +// Either return the value contained within the optional on the left-hand side +// or return the alternative value on the right hand side. +// +// m[?key].orValue("none") +// +// # OptMap +// +// Apply a transformation to the optional's underlying value if it is not empty +// and return an optional typed result based on the transformation. The +// transformation expression type must return a type T which is wrapped into +// an optional. +// +// msg.?elements.optMap(e, e.size()).orValue(0) +// +// # OptFlatMap +// +// Introduced in version: 1 +// +// Apply a transformation to the optional's underlying value if it is not empty +// and return the result. The transform expression must return an optional(T) +// rather than type T. This can be useful when dealing with zero values and +// conditionally generating an empty or non-empty result in ways which cannot +// be expressed with `optMap`. +// +// msg.?elements.optFlatMap(e, e[?0]) // return the first element if present. +// +// # First +// +// Introduced in version: 2 +// +// Returns an optional with the first value from the right hand list, or +// optional.None. +// +// [1, 2, 3].first().value() == 1 +// +// # Last +// +// Introduced in version: 2 +// +// Returns an optional with the last value from the right hand list, or +// optional.None. +// +// [1, 2, 3].last().value() == 3 +// +// This is syntactic sugar for msg.elements[msg.elements.size()-1]. +// +// # Unwrap / UnwrapOpt +// +// Introduced in version: 2 +// +// Returns a list of all the values that are not none in the input list of optional values. +// Can be used as optional.unwrap(List[T]) or with postfix notation: List[T].unwrapOpt() +// +// optional.unwrap([optional.of(42), optional.none()]) == [42] +// [optional.of(42), optional.none()].unwrapOpt() == [42] +func OptionalTypes(opts ...OptionalTypesOption) EnvOption { + lib := &optionalLib{version: math.MaxUint32} + for _, opt := range opts { + lib = opt(lib) + } + return Lib(lib) +} + +type optionalLib struct { + version uint32 +} + +// OptionalTypesOption is a functional interface for configuring the strings library. +type OptionalTypesOption func(*optionalLib) *optionalLib + +// OptionalTypesVersion configures the version of the optional type library. +// +// The version limits which functions are available. Only functions introduced +// below or equal to the given version included in the library. If this option +// is not set, all functions are available. +// +// See the library documentation to determine which version a function was introduced. +// If the documentation does not state which version a function was introduced, it can +// be assumed to be introduced at version 0, when the library was first created. +func OptionalTypesVersion(version uint32) OptionalTypesOption { + return func(lib *optionalLib) *optionalLib { + lib.version = version + return lib + } +} + +// LibraryName implements the SingletonLibrary interface method. +func (*optionalLib) LibraryName() string { + return "cel.lib.optional" +} + +// LibraryAlias returns the simple name of the library. +func (*optionalLib) LibraryAlias() string { + return "optional" +} + +// LibraryVersion returns the version of the library. +func (lib *optionalLib) LibraryVersion() uint32 { + return lib.version +} + +// CompileOptions implements the Library interface method. +func (lib *optionalLib) CompileOptions() []EnvOption { + paramTypeK := TypeParamType("K") + paramTypeV := TypeParamType("V") + optionalTypeV := OptionalType(paramTypeV) + listTypeV := ListType(paramTypeV) + mapTypeKV := MapType(paramTypeK, paramTypeV) + listOptionalTypeV := ListType(optionalTypeV) + + opts := []EnvOption{ + // Enable the optional syntax in the parser. + enableOptionalSyntax(), + + // Introduce the optional type. + Types(types.OptionalType), + + // Configure the optMap and optFlatMap macros. + Macros(ReceiverMacro(optMapMacro, 2, optMap, + MacroDocs(`perform computation on the value if present and return the result as an optional`), + MacroExamples( + common.MultilineDescription( + `// sub with the prefix 'dev.cel' or optional.none()`, + `request.auth.tokens.?sub.optMap(id, 'dev.cel.' + id)`), + `optional.none().optMap(i, i * 2) // optional.none()`))), + + // Global and member functions for working with optional values. + Function(optionalOfFunc, + FunctionDocs(`create a new optional_type(T) with a value where any value is considered valid`), + Overload("optional_of", []*Type{paramTypeV}, optionalTypeV, + OverloadExamples(`optional.of(1) // optional(1)`), + UnaryBinding(func(value ref.Val) ref.Val { + return types.OptionalOf(value) + }))), + Function(optionalOfNonZeroValueFunc, + FunctionDocs(`create a new optional_type(T) with a value, if the value is not a zero or empty value`), + Overload("optional_ofNonZeroValue", []*Type{paramTypeV}, optionalTypeV, + OverloadExamples( + `optional.ofNonZeroValue(null) // optional.none()`, + `optional.ofNonZeroValue("") // optional.none()`, + `optional.ofNonZeroValue("hello") // optional.of('hello')`), + UnaryBinding(func(value ref.Val) ref.Val { + v, isZeroer := value.(traits.Zeroer) + if !isZeroer || !v.IsZeroValue() { + return types.OptionalOf(value) + } + return types.OptionalNone + }))), + Function(optionalNoneFunc, + FunctionDocs(`singleton value representing an optional without a value`), + Overload("optional_none", []*Type{}, optionalTypeV, + OverloadExamples(`optional.none()`), + FunctionBinding(func(values ...ref.Val) ref.Val { + return types.OptionalNone + }))), + Function(valueFunc, + FunctionDocs(`obtain the value contained by the optional, error if optional.none()`), + MemberOverload("optional_value", []*Type{optionalTypeV}, paramTypeV, + OverloadExamples( + `optional.of(1).value() // 1`, + `optional.none().value() // error`), + UnaryBinding(func(value ref.Val) ref.Val { + opt := value.(*types.Optional) + return opt.GetValue() + }))), + Function(hasValueFunc, + FunctionDocs(`determine whether the optional contains a value`), + MemberOverload("optional_hasValue", []*Type{optionalTypeV}, BoolType, + OverloadExamples(`optional.of({1: 2}).hasValue() // true`), + UnaryBinding(func(value ref.Val) ref.Val { + opt := value.(*types.Optional) + return types.Bool(opt.HasValue()) + }))), + + // Implementation of 'or' and 'orValue' are special-cased to support short-circuiting in the + // evaluation chain. + Function("or", + FunctionDocs(`chain optional expressions together, picking the first valued optional expression`), + MemberOverload("optional_or_optional", []*Type{optionalTypeV, optionalTypeV}, optionalTypeV, + OverloadExamples( + `optional.none().or(optional.of(1)) // optional.of(1)`, + common.MultilineDescription( + `// either a value from the first list, a value from the second, or optional.none()`, + `[1, 2, 3][?x].or([3, 4, 5][?y])`)))), + Function("orValue", + FunctionDocs(`chain optional expressions together picking the first valued optional or the default value`), + MemberOverload("optional_orValue_value", []*Type{optionalTypeV, paramTypeV}, paramTypeV, + OverloadExamples( + common.MultilineDescription( + `// pick the value for the given key if the key exists, otherwise return 'you'`, + `{'hello': 'world', 'goodbye': 'cruel world'}[?greeting].orValue('you')`)))), + + // OptSelect is handled specially by the type-checker, so the receiver's field type is used to determine the + // optput type. + Function(operators.OptSelect, + FunctionDocs(`if the field is present create an optional of the field value, otherwise return optional.none()`), + Overload("select_optional_field", []*Type{DynType, StringType}, optionalTypeV, + OverloadExamples( + `msg.?field // optional.of(field) if non-empty, otherwise optional.none()`, + `msg.?field.?nested_field // optional.of(nested_field) if both field and nested_field are non-empty.`))), + + // OptIndex is handled mostly like any other indexing operation on a list or map, so the type-checker can use + // these signatures to determine type-agreement without any special handling. + Function(operators.OptIndex, + FunctionDocs(`if the index is present create an optional of the field value, otherwise return optional.none()`), + Overload("list_optindex_optional_int", []*Type{listTypeV, IntType}, optionalTypeV, + OverloadExamples(`[1, 2, 3][?x] // element value if x is in the list size, else optional.none()`)), + Overload("optional_list_optindex_optional_int", []*Type{OptionalType(listTypeV), IntType}, optionalTypeV), + Overload("map_optindex_optional_value", []*Type{mapTypeKV, paramTypeK}, optionalTypeV, + OverloadExamples( + `map_value[?key] // value at the key if present, else optional.none()`, + common.MultilineDescription( + `// map key-value if index is a valid map key, else optional.none()`, + `{0: 2, 2: 4, 6: 8}[?index]`))), + Overload("optional_map_optindex_optional_value", []*Type{OptionalType(mapTypeKV), paramTypeK}, optionalTypeV)), + + // Index overloads to accommodate using an optional value as the operand. + Function(operators.Index, + Overload("optional_list_index_int", []*Type{OptionalType(listTypeV), IntType}, optionalTypeV), + Overload("optional_map_index_value", []*Type{OptionalType(mapTypeKV), paramTypeK}, optionalTypeV)), + } + if lib.version >= 1 { + opts = append(opts, Macros(ReceiverMacro(optFlatMapMacro, 2, optFlatMap, + MacroDocs(`perform computation on the value if present and produce an optional value within the computation`), + MacroExamples( + common.MultilineDescription( + `// m = {'key': {}}`, + `m.?key.optFlatMap(k, k.?subkey) // optional.none()`), + common.MultilineDescription( + `// m = {'key': {'subkey': 'value'}}`, + `m.?key.optFlatMap(k, k.?subkey) // optional.of('value')`), + )))) + } + + if lib.version >= 2 { + opts = append(opts, Function("last", + FunctionDocs(`return the last value in a list if present, otherwise optional.none()`), + MemberOverload("list_last", []*Type{listTypeV}, optionalTypeV, + OverloadExamples( + `[].last() // optional.none()`, + `[1, 2, 3].last() ? optional.of(3)`), + UnaryBinding(func(v ref.Val) ref.Val { + list := v.(traits.Lister) + sz := list.Size().(types.Int) + if sz == types.IntZero { + return types.OptionalNone + } + return types.OptionalOf(list.Get(types.Int(sz - 1))) + }), + ), + )) + + opts = append(opts, Function("first", + FunctionDocs(`return the first value in a list if present, otherwise optional.none()`), + MemberOverload("list_first", []*Type{listTypeV}, optionalTypeV, + OverloadExamples( + `[].first() // optional.none()`, + `[1, 2, 3].first() ? optional.of(1)`), + UnaryBinding(func(v ref.Val) ref.Val { + list := v.(traits.Lister) + sz := list.Size().(types.Int) + if sz == types.IntZero { + return types.OptionalNone + } + return types.OptionalOf(list.Get(types.Int(0))) + }), + ), + )) + + opts = append(opts, Function(optionalUnwrapFunc, + FunctionDocs(`convert a list of optional values to a list containing only value which are not optional.none()`), + Overload("optional_unwrap", []*Type{listOptionalTypeV}, listTypeV, + OverloadExamples(`optional.unwrap([optional.of(1), optional.none()]) // [1]`), + UnaryBinding(optUnwrap)))) + opts = append(opts, Function(unwrapOptFunc, + FunctionDocs(`convert a list of optional values to a list containing only value which are not optional.none()`), + MemberOverload("optional_unwrapOpt", []*Type{listOptionalTypeV}, listTypeV, + OverloadExamples(`[optional.of(1), optional.none()].unwrapOpt() // [1]`), + UnaryBinding(optUnwrap)))) + } + + return opts +} + +// ProgramOptions implements the Library interface method. +func (lib *optionalLib) ProgramOptions() []ProgramOption { + return []ProgramOption{ + CustomDecorator(decorateOptionalOr), + } +} + +// Version returns the current version of the library. +func (lib *optionalLib) Version() uint32 { + return lib.version +} + +func optMap(meh MacroExprFactory, target ast.Expr, args []ast.Expr) (ast.Expr, *Error) { + varIdent := args[0] + varName := "" + switch varIdent.Kind() { + case ast.IdentKind: + varName = varIdent.AsIdent() + default: + return nil, meh.NewError(varIdent.ID(), "optMap() variable name must be a simple identifier") + } + mapExpr := args[1] + return meh.NewCall( + operators.Conditional, + meh.NewMemberCall(hasValueFunc, target), + meh.NewCall(optionalOfFunc, + meh.NewComprehension( + meh.NewList(), + unusedIterVar, + varName, + meh.NewMemberCall(valueFunc, meh.Copy(target)), + meh.NewLiteral(types.False), + meh.NewIdent(varName), + mapExpr, + ), + ), + meh.NewCall(optionalNoneFunc), + ), nil +} + +func optFlatMap(meh MacroExprFactory, target ast.Expr, args []ast.Expr) (ast.Expr, *Error) { + varIdent := args[0] + varName := "" + switch varIdent.Kind() { + case ast.IdentKind: + varName = varIdent.AsIdent() + default: + return nil, meh.NewError(varIdent.ID(), "optFlatMap() variable name must be a simple identifier") + } + mapExpr := args[1] + return meh.NewCall( + operators.Conditional, + meh.NewMemberCall(hasValueFunc, target), + meh.NewComprehension( + meh.NewList(), + unusedIterVar, + varName, + meh.NewMemberCall(valueFunc, meh.Copy(target)), + meh.NewLiteral(types.False), + meh.NewIdent(varName), + mapExpr, + ), + meh.NewCall(optionalNoneFunc), + ), nil +} + +func optUnwrap(value ref.Val) ref.Val { + list := value.(traits.Lister) + var unwrappedList []ref.Val + iter := list.Iterator() + for iter.HasNext() == types.True { + val := iter.Next() + opt, isOpt := val.(*types.Optional) + if !isOpt { + return types.WrapErr(fmt.Errorf("value %v is not optional", val)) + } + if opt.HasValue() { + unwrappedList = append(unwrappedList, opt.GetValue()) + } + } + return types.DefaultTypeAdapter.NativeToValue(unwrappedList) +} + +func enableOptionalSyntax() EnvOption { + return func(e *Env) (*Env, error) { + e.prsrOpts = append(e.prsrOpts, parser.EnableOptionalSyntax(true)) + return e, nil + } +} + +// EnableErrorOnBadPresenceTest enables error generation when a presence test or optional field +// selection is performed on a primitive type. +func EnableErrorOnBadPresenceTest(value bool) EnvOption { + return features(featureEnableErrorOnBadPresenceTest, value) +} + +func decorateOptionalOr(i interpreter.Interpretable) (interpreter.Interpretable, error) { + call, ok := i.(interpreter.InterpretableCall) + if !ok { + return i, nil + } + args := call.Args() + if len(args) != 2 { + return i, nil + } + switch call.Function() { + case "or": + if call.OverloadID() != "" && call.OverloadID() != "optional_or_optional" { + return i, nil + } + return &evalOptionalOr{ + id: call.ID(), + lhs: args[0], + rhs: args[1], + }, nil + case "orValue": + if call.OverloadID() != "" && call.OverloadID() != "optional_orValue_value" { + return i, nil + } + return &evalOptionalOrValue{ + id: call.ID(), + lhs: args[0], + rhs: args[1], + }, nil + default: + return i, nil + } +} + +// evalOptionalOr selects between two optional values, either the first if it has a value, or +// the second optional expression is evaluated and returned. +type evalOptionalOr struct { + id int64 + lhs interpreter.Interpretable + rhs interpreter.Interpretable +} + +// ID implements the Interpretable interface method. +func (opt *evalOptionalOr) ID() int64 { + return opt.id +} + +// Eval evaluates the left-hand side optional to determine whether it contains a value, else +// proceeds with the right-hand side evaluation. +func (opt *evalOptionalOr) Eval(ctx interpreter.Activation) ref.Val { + // short-circuit lhs. + optLHS := opt.lhs.Eval(ctx) + optVal, ok := optLHS.(*types.Optional) + if !ok { + return optLHS + } + if optVal.HasValue() { + return optVal + } + return opt.rhs.Eval(ctx) +} + +// evalOptionalOrValue selects between an optional or a concrete value. If the optional has a value, +// its value is returned, otherwise the alternative value expression is evaluated and returned. +type evalOptionalOrValue struct { + id int64 + lhs interpreter.Interpretable + rhs interpreter.Interpretable +} + +// ID implements the Interpretable interface method. +func (opt *evalOptionalOrValue) ID() int64 { + return opt.id +} + +// Eval evaluates the left-hand side optional to determine whether it contains a value, else +// proceeds with the right-hand side evaluation. +func (opt *evalOptionalOrValue) Eval(ctx interpreter.Activation) ref.Val { + // short-circuit lhs. + optLHS := opt.lhs.Eval(ctx) + optVal, ok := optLHS.(*types.Optional) + if !ok { + return optLHS + } + if optVal.HasValue() { + return optVal.GetValue() + } + return opt.rhs.Eval(ctx) +} + +type timeLegacyLibrary struct{} + +func (timeLegacyLibrary) CompileOptions() []EnvOption { + return timeOverloadDeclarations +} + +func (timeLegacyLibrary) ProgramOptions() []ProgramOption { + return []ProgramOption{} +} + +// Declarations and functions which enable using UTC on time.Time inputs when the timezone is unspecified +// in the CEL expression. +var ( + timeOverloadDeclarations = []EnvOption{ + Function(overloads.TimeGetFullYear, + MemberOverload(overloads.TimestampToYear, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetFullYear, overloads.TimestampToYear, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetMonth, + MemberOverload(overloads.TimestampToMonth, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetMonth, overloads.TimestampToMonth, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetDayOfYear, + MemberOverload(overloads.TimestampToDayOfYear, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetDayOfYear, overloads.TimestampToDayOfYear, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetDayOfMonth, + MemberOverload(overloads.TimestampToDayOfMonthZeroBased, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetDayOfMonth, overloads.TimestampToDayOfMonthZeroBased, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetDate, + MemberOverload(overloads.TimestampToDayOfMonthOneBased, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetDate, overloads.TimestampToDayOfMonthOneBased, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetDayOfWeek, + MemberOverload(overloads.TimestampToDayOfWeek, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetDayOfWeek, overloads.TimestampToDayOfWeek, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetHours, + MemberOverload(overloads.TimestampToHours, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetHours, overloads.TimestampToHours, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetMinutes, + MemberOverload(overloads.TimestampToMinutes, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetMinutes, overloads.TimestampToMinutes, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetSeconds, + MemberOverload(overloads.TimestampToSeconds, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetSeconds, overloads.TimestampToSeconds, []ref.Val{}) + }), + ), + ), + Function(overloads.TimeGetMilliseconds, + MemberOverload(overloads.TimestampToMilliseconds, []*Type{TimestampType}, IntType, + UnaryBinding(func(ts ref.Val) ref.Val { + t := ts.(types.Timestamp) + return t.Receive(overloads.TimeGetMilliseconds, overloads.TimestampToMilliseconds, []ref.Val{}) + }), + ), + ), + } +) diff --git a/vendor/github.com/google/cel-go/cel/macro.go b/vendor/github.com/google/cel-go/cel/macro.go new file mode 100644 index 0000000000..3d3c5be1b7 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/macro.go @@ -0,0 +1,590 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "fmt" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/parser" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +// Macro describes a function signature to match and the MacroExpander to apply. +// +// Note: when a Macro should apply to multiple overloads (based on arg count) of a given function, +// a Macro should be created per arg-count or as a var arg macro. +type Macro = parser.Macro + +// MacroFactory defines an expansion function which converts a call and its arguments to a cel.Expr value. +type MacroFactory = parser.MacroExpander + +// MacroExprFactory assists with the creation of Expr values in a manner which is consistent +// the internal semantics and id generation behaviors of the parser and checker libraries. +type MacroExprFactory = parser.ExprHelper + +// MacroExpander converts a call and its associated arguments into a protobuf Expr representation. +// +// If the MacroExpander determines within the implementation that an expansion is not needed it may return +// a nil Expr value to indicate a non-match. However, if an expansion is to be performed, but the arguments +// are not well-formed, the result of the expansion will be an error. +// +// The MacroExpander accepts as arguments a MacroExprHelper as well as the arguments used in the function call +// and produces as output an Expr ast node. +// +// Note: when the Macro.IsReceiverStyle() method returns true, the target argument will be nil. +type MacroExpander func(eh MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) + +// MacroExprHelper exposes helper methods for creating new expressions within a CEL abstract syntax tree. +// ExprHelper assists with the manipulation of proto-based Expr values in a manner which is +// consistent with the source position and expression id generation code leveraged by both +// the parser and type-checker. +type MacroExprHelper interface { + // Copy the input expression with a brand new set of identifiers. + Copy(*exprpb.Expr) *exprpb.Expr + + // LiteralBool creates an Expr value for a bool literal. + LiteralBool(value bool) *exprpb.Expr + + // LiteralBytes creates an Expr value for a byte literal. + LiteralBytes(value []byte) *exprpb.Expr + + // LiteralDouble creates an Expr value for double literal. + LiteralDouble(value float64) *exprpb.Expr + + // LiteralInt creates an Expr value for an int literal. + LiteralInt(value int64) *exprpb.Expr + + // LiteralString creates am Expr value for a string literal. + LiteralString(value string) *exprpb.Expr + + // LiteralUint creates an Expr value for a uint literal. + LiteralUint(value uint64) *exprpb.Expr + + // NewList creates a CreateList instruction where the list is comprised of the optional set + // of elements provided as arguments. + NewList(elems ...*exprpb.Expr) *exprpb.Expr + + // NewMap creates a CreateStruct instruction for a map where the map is comprised of the + // optional set of key, value entries. + NewMap(entries ...*exprpb.Expr_CreateStruct_Entry) *exprpb.Expr + + // NewMapEntry creates a Map Entry for the key, value pair. + NewMapEntry(key *exprpb.Expr, val *exprpb.Expr, optional bool) *exprpb.Expr_CreateStruct_Entry + + // NewObject creates a CreateStruct instruction for an object with a given type name and + // optional set of field initializers. + NewObject(typeName string, fieldInits ...*exprpb.Expr_CreateStruct_Entry) *exprpb.Expr + + // NewObjectFieldInit creates a new Object field initializer from the field name and value. + NewObjectFieldInit(field string, init *exprpb.Expr, optional bool) *exprpb.Expr_CreateStruct_Entry + + // Fold creates a fold comprehension instruction. + // + // - iterVar is the iteration variable name. + // - iterRange represents the expression that resolves to a list or map where the elements or + // keys (respectively) will be iterated over. + // - accuVar is the accumulation variable name, typically parser.AccumulatorName. + // - accuInit is the initial expression whose value will be set for the accuVar prior to + // folding. + // - condition is the expression to test to determine whether to continue folding. + // - step is the expression to evaluation at the conclusion of a single fold iteration. + // - result is the computation to evaluate at the conclusion of the fold. + // + // The accuVar should not shadow variable names that you would like to reference within the + // environment in the step and condition expressions. Presently, the name __result__ is commonly + // used by built-in macros but this may change in the future. + Fold(iterVar string, + iterRange *exprpb.Expr, + accuVar string, + accuInit *exprpb.Expr, + condition *exprpb.Expr, + step *exprpb.Expr, + result *exprpb.Expr) *exprpb.Expr + + // Ident creates an identifier Expr value. + Ident(name string) *exprpb.Expr + + // AccuIdent returns an accumulator identifier for use with comprehension results. + AccuIdent() *exprpb.Expr + + // GlobalCall creates a function call Expr value for a global (free) function. + GlobalCall(function string, args ...*exprpb.Expr) *exprpb.Expr + + // ReceiverCall creates a function call Expr value for a receiver-style function. + ReceiverCall(function string, target *exprpb.Expr, args ...*exprpb.Expr) *exprpb.Expr + + // PresenceTest creates a Select TestOnly Expr value for modelling has() semantics. + PresenceTest(operand *exprpb.Expr, field string) *exprpb.Expr + + // Select create a field traversal Expr value. + Select(operand *exprpb.Expr, field string) *exprpb.Expr + + // OffsetLocation returns the Location of the expression identifier. + OffsetLocation(exprID int64) common.Location + + // NewError associates an error message with a given expression id. + NewError(exprID int64, message string) *Error +} + +// MacroOpt defines a functional option for configuring macro behavior. +type MacroOpt = parser.MacroOpt + +// MacroDocs configures a list of strings into a multiline description for the macro. +func MacroDocs(docs ...string) MacroOpt { + return parser.MacroDocs(docs...) +} + +// MacroExamples configures a list of examples, either as a string or common.MultilineString, +// into an example set to be provided with the macro Documentation() call. +func MacroExamples(examples ...string) MacroOpt { + return parser.MacroExamples(examples...) +} + +// GlobalMacro creates a Macro for a global function with the specified arg count. +func GlobalMacro(function string, argCount int, factory MacroFactory, opts ...MacroOpt) Macro { + return parser.NewGlobalMacro(function, argCount, factory, opts...) +} + +// ReceiverMacro creates a Macro for a receiver function matching the specified arg count. +func ReceiverMacro(function string, argCount int, factory MacroFactory, opts ...MacroOpt) Macro { + return parser.NewReceiverMacro(function, argCount, factory, opts...) +} + +// GlobalVarArgMacro creates a Macro for a global function with a variable arg count. +func GlobalVarArgMacro(function string, factory MacroFactory, opts ...MacroOpt) Macro { + return parser.NewGlobalVarArgMacro(function, factory, opts...) +} + +// ReceiverVarArgMacro creates a Macro for a receiver function matching a variable arg count. +func ReceiverVarArgMacro(function string, factory MacroFactory, opts ...MacroOpt) Macro { + return parser.NewReceiverVarArgMacro(function, factory, opts...) +} + +// NewGlobalMacro creates a Macro for a global function with the specified arg count. +// +// Deprecated: use GlobalMacro +func NewGlobalMacro(function string, argCount int, expander MacroExpander) Macro { + expand := adaptingExpander{expander} + return parser.NewGlobalMacro(function, argCount, expand.Expander) +} + +// NewReceiverMacro creates a Macro for a receiver function matching the specified arg count. +// +// Deprecated: use ReceiverMacro +func NewReceiverMacro(function string, argCount int, expander MacroExpander) Macro { + expand := adaptingExpander{expander} + return parser.NewReceiverMacro(function, argCount, expand.Expander) +} + +// NewGlobalVarArgMacro creates a Macro for a global function with a variable arg count. +// +// Deprecated: use GlobalVarArgMacro +func NewGlobalVarArgMacro(function string, expander MacroExpander) Macro { + expand := adaptingExpander{expander} + return parser.NewGlobalVarArgMacro(function, expand.Expander) +} + +// NewReceiverVarArgMacro creates a Macro for a receiver function matching a variable arg count. +// +// Deprecated: use ReceiverVarArgMacro +func NewReceiverVarArgMacro(function string, expander MacroExpander) Macro { + expand := adaptingExpander{expander} + return parser.NewReceiverVarArgMacro(function, expand.Expander) +} + +// HasMacroExpander expands the input call arguments into a presence test, e.g. has(.field) +func HasMacroExpander(meh MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) { + ph, err := toParserHelper(meh) + if err != nil { + return nil, err + } + arg, err := adaptToExpr(args[0]) + if err != nil { + return nil, err + } + if arg.Kind() == ast.SelectKind { + s := arg.AsSelect() + return adaptToProto(ph.NewPresenceTest(s.Operand(), s.FieldName())) + } + return nil, ph.NewError(arg.ID(), "invalid argument to has() macro") +} + +// ExistsMacroExpander expands the input call arguments into a comprehension that returns true if any of the +// elements in the range match the predicate expressions: +// .exists(, ) +func ExistsMacroExpander(meh MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) { + ph, err := toParserHelper(meh) + if err != nil { + return nil, err + } + out, err := parser.MakeExists(ph, mustAdaptToExpr(target), mustAdaptToExprs(args)) + if err != nil { + return nil, err + } + return adaptToProto(out) +} + +// ExistsOneMacroExpander expands the input call arguments into a comprehension that returns true if exactly +// one of the elements in the range match the predicate expressions: +// .exists_one(, ) +func ExistsOneMacroExpander(meh MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) { + ph, err := toParserHelper(meh) + if err != nil { + return nil, err + } + out, err := parser.MakeExistsOne(ph, mustAdaptToExpr(target), mustAdaptToExprs(args)) + if err != nil { + return nil, err + } + return adaptToProto(out) +} + +// MapMacroExpander expands the input call arguments into a comprehension that transforms each element in the +// input to produce an output list. +// +// There are two call patterns supported by map: +// +// .map(, ) +// .map(, , ) +// +// In the second form only iterVar values which return true when provided to the predicate expression +// are transformed. +func MapMacroExpander(meh MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) { + ph, err := toParserHelper(meh) + if err != nil { + return nil, err + } + out, err := parser.MakeMap(ph, mustAdaptToExpr(target), mustAdaptToExprs(args)) + if err != nil { + return nil, err + } + return adaptToProto(out) +} + +// FilterMacroExpander expands the input call arguments into a comprehension which produces a list which contains +// only elements which match the provided predicate expression: +// .filter(, ) +func FilterMacroExpander(meh MacroExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) { + ph, err := toParserHelper(meh) + if err != nil { + return nil, err + } + out, err := parser.MakeFilter(ph, mustAdaptToExpr(target), mustAdaptToExprs(args)) + if err != nil { + return nil, err + } + return adaptToProto(out) +} + +var ( + // Aliases to each macro in the CEL standard environment. + // Note: reassigning these macro variables may result in undefined behavior. + + // HasMacro expands "has(m.f)" which tests the presence of a field, avoiding the need to + // specify the field as a string. + HasMacro = parser.HasMacro + + // AllMacro expands "range.all(var, predicate)" into a comprehension which ensures that all + // elements in the range satisfy the predicate. + AllMacro = parser.AllMacro + + // ExistsMacro expands "range.exists(var, predicate)" into a comprehension which ensures that + // some element in the range satisfies the predicate. + ExistsMacro = parser.ExistsMacro + + // ExistsOneMacro expands "range.exists_one(var, predicate)", which is true if for exactly one + // element in range the predicate holds. + ExistsOneMacro = parser.ExistsOneMacro + + // MapMacro expands "range.map(var, function)" into a comprehension which applies the function + // to each element in the range to produce a new list. + MapMacro = parser.MapMacro + + // MapFilterMacro expands "range.map(var, predicate, function)" into a comprehension which + // first filters the elements in the range by the predicate, then applies the transform function + // to produce a new list. + MapFilterMacro = parser.MapFilterMacro + + // FilterMacro expands "range.filter(var, predicate)" into a comprehension which filters + // elements in the range, producing a new list from the elements that satisfy the predicate. + FilterMacro = parser.FilterMacro + + // StandardMacros provides an alias to all the CEL macros defined in the standard environment. + StandardMacros = []Macro{ + HasMacro, AllMacro, ExistsMacro, ExistsOneMacro, MapMacro, MapFilterMacro, FilterMacro, + } + + // NoMacros provides an alias to an empty list of macros + NoMacros = []Macro{} +) + +type adaptingExpander struct { + legacyExpander MacroExpander +} + +func (adapt *adaptingExpander) Expander(eh parser.ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + var legacyTarget *exprpb.Expr = nil + var err *Error = nil + if target != nil { + legacyTarget, err = adaptToProto(target) + if err != nil { + return nil, err + } + } + legacyArgs := make([]*exprpb.Expr, len(args)) + for i, arg := range args { + legacyArgs[i], err = adaptToProto(arg) + if err != nil { + return nil, err + } + } + ah := &adaptingHelper{modernHelper: eh} + legacyExpr, err := adapt.legacyExpander(ah, legacyTarget, legacyArgs) + if err != nil { + return nil, err + } + ex, err := adaptToExpr(legacyExpr) + if err != nil { + return nil, err + } + return ex, nil +} + +func wrapErr(id int64, message string, err error) *common.Error { + return &common.Error{ + Location: common.NoLocation, + Message: fmt.Sprintf("%s: %v", message, err), + ExprID: id, + } +} + +type adaptingHelper struct { + modernHelper parser.ExprHelper +} + +// Copy the input expression with a brand new set of identifiers. +func (ah *adaptingHelper) Copy(e *exprpb.Expr) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.Copy(mustAdaptToExpr(e))) +} + +// LiteralBool creates an Expr value for a bool literal. +func (ah *adaptingHelper) LiteralBool(value bool) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewLiteral(types.Bool(value))) +} + +// LiteralBytes creates an Expr value for a byte literal. +func (ah *adaptingHelper) LiteralBytes(value []byte) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewLiteral(types.Bytes(value))) +} + +// LiteralDouble creates an Expr value for double literal. +func (ah *adaptingHelper) LiteralDouble(value float64) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewLiteral(types.Double(value))) +} + +// LiteralInt creates an Expr value for an int literal. +func (ah *adaptingHelper) LiteralInt(value int64) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewLiteral(types.Int(value))) +} + +// LiteralString creates am Expr value for a string literal. +func (ah *adaptingHelper) LiteralString(value string) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewLiteral(types.String(value))) +} + +// LiteralUint creates an Expr value for a uint literal. +func (ah *adaptingHelper) LiteralUint(value uint64) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewLiteral(types.Uint(value))) +} + +// NewList creates a CreateList instruction where the list is comprised of the optional set +// of elements provided as arguments. +func (ah *adaptingHelper) NewList(elems ...*exprpb.Expr) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewList(mustAdaptToExprs(elems)...)) +} + +// NewMap creates a CreateStruct instruction for a map where the map is comprised of the +// optional set of key, value entries. +func (ah *adaptingHelper) NewMap(entries ...*exprpb.Expr_CreateStruct_Entry) *exprpb.Expr { + adaptedEntries := make([]ast.EntryExpr, len(entries)) + for i, e := range entries { + adaptedEntries[i] = mustAdaptToEntryExpr(e) + } + return mustAdaptToProto(ah.modernHelper.NewMap(adaptedEntries...)) +} + +// NewMapEntry creates a Map Entry for the key, value pair. +func (ah *adaptingHelper) NewMapEntry(key *exprpb.Expr, val *exprpb.Expr, optional bool) *exprpb.Expr_CreateStruct_Entry { + return mustAdaptToProtoEntry( + ah.modernHelper.NewMapEntry(mustAdaptToExpr(key), mustAdaptToExpr(val), optional)) +} + +// NewObject creates a CreateStruct instruction for an object with a given type name and +// optional set of field initializers. +func (ah *adaptingHelper) NewObject(typeName string, fieldInits ...*exprpb.Expr_CreateStruct_Entry) *exprpb.Expr { + adaptedEntries := make([]ast.EntryExpr, len(fieldInits)) + for i, e := range fieldInits { + adaptedEntries[i] = mustAdaptToEntryExpr(e) + } + return mustAdaptToProto(ah.modernHelper.NewStruct(typeName, adaptedEntries...)) +} + +// NewObjectFieldInit creates a new Object field initializer from the field name and value. +func (ah *adaptingHelper) NewObjectFieldInit(field string, init *exprpb.Expr, optional bool) *exprpb.Expr_CreateStruct_Entry { + return mustAdaptToProtoEntry( + ah.modernHelper.NewStructField(field, mustAdaptToExpr(init), optional)) +} + +// Fold creates a fold comprehension instruction. +// +// - iterVar is the iteration variable name. +// - iterRange represents the expression that resolves to a list or map where the elements or +// keys (respectively) will be iterated over. +// - accuVar is the accumulation variable name, typically parser.AccumulatorName. +// - accuInit is the initial expression whose value will be set for the accuVar prior to +// folding. +// - condition is the expression to test to determine whether to continue folding. +// - step is the expression to evaluation at the conclusion of a single fold iteration. +// - result is the computation to evaluate at the conclusion of the fold. +// +// The accuVar should not shadow variable names that you would like to reference within the +// environment in the step and condition expressions. Presently, the name __result__ is commonly +// used by built-in macros but this may change in the future. +func (ah *adaptingHelper) Fold(iterVar string, + iterRange *exprpb.Expr, + accuVar string, + accuInit *exprpb.Expr, + condition *exprpb.Expr, + step *exprpb.Expr, + result *exprpb.Expr) *exprpb.Expr { + return mustAdaptToProto( + ah.modernHelper.NewComprehension( + mustAdaptToExpr(iterRange), + iterVar, + accuVar, + mustAdaptToExpr(accuInit), + mustAdaptToExpr(condition), + mustAdaptToExpr(step), + mustAdaptToExpr(result), + ), + ) +} + +// Ident creates an identifier Expr value. +func (ah *adaptingHelper) Ident(name string) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewIdent(name)) +} + +// AccuIdent returns an accumulator identifier for use with comprehension results. +func (ah *adaptingHelper) AccuIdent() *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewAccuIdent()) +} + +// GlobalCall creates a function call Expr value for a global (free) function. +func (ah *adaptingHelper) GlobalCall(function string, args ...*exprpb.Expr) *exprpb.Expr { + return mustAdaptToProto(ah.modernHelper.NewCall(function, mustAdaptToExprs(args)...)) +} + +// ReceiverCall creates a function call Expr value for a receiver-style function. +func (ah *adaptingHelper) ReceiverCall(function string, target *exprpb.Expr, args ...*exprpb.Expr) *exprpb.Expr { + return mustAdaptToProto( + ah.modernHelper.NewMemberCall(function, mustAdaptToExpr(target), mustAdaptToExprs(args)...)) +} + +// PresenceTest creates a Select TestOnly Expr value for modelling has() semantics. +func (ah *adaptingHelper) PresenceTest(operand *exprpb.Expr, field string) *exprpb.Expr { + op := mustAdaptToExpr(operand) + return mustAdaptToProto(ah.modernHelper.NewPresenceTest(op, field)) +} + +// Select create a field traversal Expr value. +func (ah *adaptingHelper) Select(operand *exprpb.Expr, field string) *exprpb.Expr { + op := mustAdaptToExpr(operand) + return mustAdaptToProto(ah.modernHelper.NewSelect(op, field)) +} + +// OffsetLocation returns the Location of the expression identifier. +func (ah *adaptingHelper) OffsetLocation(exprID int64) common.Location { + return ah.modernHelper.OffsetLocation(exprID) +} + +// NewError associates an error message with a given expression id. +func (ah *adaptingHelper) NewError(exprID int64, message string) *Error { + return ah.modernHelper.NewError(exprID, message) +} + +func mustAdaptToExprs(exprs []*exprpb.Expr) []ast.Expr { + adapted := make([]ast.Expr, len(exprs)) + for i, e := range exprs { + adapted[i] = mustAdaptToExpr(e) + } + return adapted +} + +func mustAdaptToExpr(e *exprpb.Expr) ast.Expr { + out, _ := adaptToExpr(e) + return out +} + +func adaptToExpr(e *exprpb.Expr) (ast.Expr, *Error) { + if e == nil { + return nil, nil + } + out, err := ast.ProtoToExpr(e) + if err != nil { + return nil, wrapErr(e.GetId(), "proto conversion failure", err) + } + return out, nil +} + +func mustAdaptToEntryExpr(e *exprpb.Expr_CreateStruct_Entry) ast.EntryExpr { + out, _ := ast.ProtoToEntryExpr(e) + return out +} + +func mustAdaptToProto(e ast.Expr) *exprpb.Expr { + out, _ := adaptToProto(e) + return out +} + +func adaptToProto(e ast.Expr) (*exprpb.Expr, *Error) { + if e == nil { + return nil, nil + } + out, err := ast.ExprToProto(e) + if err != nil { + return nil, wrapErr(e.ID(), "expr conversion failure", err) + } + return out, nil +} + +func mustAdaptToProtoEntry(e ast.EntryExpr) *exprpb.Expr_CreateStruct_Entry { + out, _ := ast.EntryExprToProto(e) + return out +} + +func toParserHelper(meh MacroExprHelper) (parser.ExprHelper, *Error) { + ah, ok := meh.(*adaptingHelper) + if !ok { + return nil, common.NewError(0, + fmt.Sprintf("unsupported macro helper: %v (%T)", meh, meh), + common.NoLocation) + } + return ah.modernHelper, nil +} diff --git a/vendor/github.com/google/cel-go/cel/optimizer.go b/vendor/github.com/google/cel-go/cel/optimizer.go new file mode 100644 index 0000000000..9a2a97a647 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/optimizer.go @@ -0,0 +1,535 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "sort" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// StaticOptimizer contains a sequence of ASTOptimizer instances which will be applied in order. +// +// The static optimizer normalizes expression ids and type-checking run between optimization +// passes to ensure that the final optimized output is a valid expression with metadata consistent +// with what would have been generated from a parsed and checked expression. +// +// Note: source position information is best-effort and likely wrong, but optimized expressions +// should be suitable for calls to parser.Unparse. +type StaticOptimizer struct { + optimizers []ASTOptimizer +} + +// NewStaticOptimizer creates a StaticOptimizer with a sequence of ASTOptimizer's to be applied +// to a checked expression. +func NewStaticOptimizer(optimizers ...ASTOptimizer) *StaticOptimizer { + return &StaticOptimizer{ + optimizers: optimizers, + } +} + +// Optimize applies a sequence of optimizations to an Ast within a given environment. +// +// If issues are encountered, the Issues.Err() return value will be non-nil. +func (opt *StaticOptimizer) Optimize(env *Env, a *Ast) (*Ast, *Issues) { + // Make a copy of the AST to be optimized. + optimized := ast.Copy(a.NativeRep()) + ids := newIDGenerator(ast.MaxID(a.NativeRep())) + + // Create the optimizer context, could be pooled in the future. + issues := NewIssues(common.NewErrors(a.Source())) + baseFac := ast.NewExprFactory() + exprFac := &optimizerExprFactory{ + idGenerator: ids, + fac: baseFac, + sourceInfo: optimized.SourceInfo(), + } + ctx := &OptimizerContext{ + optimizerExprFactory: exprFac, + Env: env, + Issues: issues, + } + + // Apply the optimizations sequentially. + for _, o := range opt.optimizers { + optimized = o.Optimize(ctx, optimized) + if issues.Err() != nil { + return nil, issues + } + // Normalize expression id metadata including coordination with macro call metadata. + freshIDGen := newIDGenerator(0) + info := optimized.SourceInfo() + expr := optimized.Expr() + normalizeIDs(freshIDGen.renumberStable, expr, info) + cleanupMacroRefs(expr, info) + + // Recheck the updated expression for any possible type-agreement or validation errors. + parsed := &Ast{ + source: a.Source(), + impl: ast.NewAST(expr, info)} + checked, iss := ctx.Check(parsed) + if iss.Err() != nil { + return nil, iss + } + optimized = checked.NativeRep() + } + + // Return the optimized result. + return &Ast{ + source: a.Source(), + impl: optimized, + }, nil +} + +// normalizeIDs ensures that the metadata present with an AST is reset in a manner such +// that the ids within the expression correspond to the ids within macros. +func normalizeIDs(idGen ast.IDGenerator, optimized ast.Expr, info *ast.SourceInfo) { + optimized.RenumberIDs(idGen) + if len(info.MacroCalls()) == 0 { + return + } + + // Sort the macro ids to make sure that the renumbering of macro-specific variables + // is stable across normalization calls. + sortedMacroIDs := []int64{} + for id := range info.MacroCalls() { + sortedMacroIDs = append(sortedMacroIDs, id) + } + sort.Slice(sortedMacroIDs, func(i, j int) bool { return sortedMacroIDs[i] < sortedMacroIDs[j] }) + + // First, update the macro call ids themselves. + callIDMap := map[int64]int64{} + for _, id := range sortedMacroIDs { + callIDMap[id] = idGen(id) + } + // Then update the macro call definitions which refer to these ids, but + // ensure that the updates don't collide and remove macro entries which haven't + // been visited / updated yet. + type macroUpdate struct { + id int64 + call ast.Expr + } + macroUpdates := []macroUpdate{} + for _, oldID := range sortedMacroIDs { + newID := callIDMap[oldID] + call, found := info.GetMacroCall(oldID) + if !found { + continue + } + call.RenumberIDs(idGen) + macroUpdates = append(macroUpdates, macroUpdate{id: newID, call: call}) + info.ClearMacroCall(oldID) + } + for _, u := range macroUpdates { + info.SetMacroCall(u.id, u.call) + } +} + +func cleanupMacroRefs(expr ast.Expr, info *ast.SourceInfo) { + if len(info.MacroCalls()) == 0 { + return + } + + // Sanitize the macro call references once the optimized expression has been computed + // and the ids normalized between the expression and the macros. + exprRefMap := make(map[int64]struct{}) + ast.PostOrderVisit(expr, ast.NewExprVisitor(func(e ast.Expr) { + if e.ID() == 0 { + return + } + exprRefMap[e.ID()] = struct{}{} + })) + // Update the macro call id references to ensure that macro pointers are + // updated consistently across macros. + for _, call := range info.MacroCalls() { + ast.PostOrderVisit(call, ast.NewExprVisitor(func(e ast.Expr) { + if e.ID() == 0 { + return + } + exprRefMap[e.ID()] = struct{}{} + })) + } + for id := range info.MacroCalls() { + if _, found := exprRefMap[id]; !found { + info.ClearMacroCall(id) + } + } +} + +// newIDGenerator ensures that new ids are only created the first time they are encountered. +func newIDGenerator(seed int64) *idGenerator { + return &idGenerator{ + idMap: make(map[int64]int64), + seed: seed, + } +} + +type idGenerator struct { + idMap map[int64]int64 + seed int64 +} + +func (gen *idGenerator) nextID() int64 { + gen.seed++ + return gen.seed +} + +func (gen *idGenerator) renumberStable(id int64) int64 { + if id == 0 { + return 0 + } + if newID, found := gen.idMap[id]; found { + return newID + } + nextID := gen.nextID() + gen.idMap[id] = nextID + return nextID +} + +// OptimizerContext embeds Env and Issues instances to make it easy to type-check and evaluate +// subexpressions and report any errors encountered along the way. The context also embeds the +// optimizerExprFactory which can be used to generate new sub-expressions with expression ids +// consistent with the expectations of a parsed expression. +type OptimizerContext struct { + *Env + *optimizerExprFactory + *Issues +} + +// ExtendEnv auguments the context's environment with the additional options. +func (opt *OptimizerContext) ExtendEnv(opts ...EnvOption) error { + e, err := opt.Env.Extend(opts...) + if err != nil { + return err + } + opt.Env = e + return nil +} + +// ASTOptimizer applies an optimization over an AST and returns the optimized result. +type ASTOptimizer interface { + // Optimize optimizes a type-checked AST within an Environment and accumulates any issues. + Optimize(*OptimizerContext, *ast.AST) *ast.AST +} + +type optimizerExprFactory struct { + *idGenerator + fac ast.ExprFactory + sourceInfo *ast.SourceInfo +} + +// NewAST creates an AST from the current expression using the tracked source info which +// is modified and managed by the OptimizerContext. +func (opt *optimizerExprFactory) NewAST(expr ast.Expr) *ast.AST { + return ast.NewAST(expr, opt.sourceInfo) +} + +// CopyAST creates a renumbered copy of `Expr` and `SourceInfo` values of the input AST, where the +// renumbering uses the same scheme as the core optimizer logic ensuring there are no collisions +// between copies. +// +// Use this method before attempting to merge the expression from AST into another. +func (opt *optimizerExprFactory) CopyAST(a *ast.AST) (ast.Expr, *ast.SourceInfo) { + idGen := newIDGenerator(opt.nextID()) + defer func() { opt.seed = idGen.nextID() }() + copyExpr := opt.fac.CopyExpr(a.Expr()) + copyInfo := ast.CopySourceInfo(a.SourceInfo()) + normalizeIDs(idGen.renumberStable, copyExpr, copyInfo) + return copyExpr, copyInfo +} + +// CopyASTAndMetadata copies the input AST and propagates the macro metadata into the AST being +// optimized. +func (opt *optimizerExprFactory) CopyASTAndMetadata(a *ast.AST) ast.Expr { + copyExpr, copyInfo := opt.CopyAST(a) + for macroID, call := range copyInfo.MacroCalls() { + opt.SetMacroCall(macroID, call) + } + return copyExpr +} + +// ClearMacroCall clears the macro at the given expression id. +func (opt *optimizerExprFactory) ClearMacroCall(id int64) { + opt.sourceInfo.ClearMacroCall(id) +} + +// SetMacroCall sets the macro call metadata for the given macro id within the tracked source info +// metadata. +func (opt *optimizerExprFactory) SetMacroCall(id int64, expr ast.Expr) { + opt.sourceInfo.SetMacroCall(id, expr) +} + +// MacroCalls returns the map of macro calls currently in the context. +func (opt *optimizerExprFactory) MacroCalls() map[int64]ast.Expr { + return opt.sourceInfo.MacroCalls() +} + +// NewBindMacro creates an AST expression representing the expanded bind() macro, and a macro expression +// representing the unexpanded call signature to be inserted into the source info macro call metadata. +func (opt *optimizerExprFactory) NewBindMacro(macroID int64, varName string, varInit, remaining ast.Expr) (astExpr, macroExpr ast.Expr) { + varID := opt.nextID() + remainingID := opt.nextID() + remaining = opt.fac.CopyExpr(remaining) + remaining.RenumberIDs(func(id int64) int64 { + if id == macroID { + return remainingID + } + return id + }) + if call, exists := opt.sourceInfo.GetMacroCall(macroID); exists { + opt.SetMacroCall(remainingID, opt.fac.CopyExpr(call)) + } + + astExpr = opt.fac.NewComprehension(macroID, + opt.fac.NewList(opt.nextID(), []ast.Expr{}, []int32{}), + "#unused", + varName, + opt.fac.CopyExpr(varInit), + opt.fac.NewLiteral(opt.nextID(), types.False), + opt.fac.NewIdent(varID, varName), + remaining) + + macroExpr = opt.fac.NewMemberCall(0, "bind", + opt.fac.NewIdent(opt.nextID(), "cel"), + opt.fac.NewIdent(varID, varName), + opt.fac.CopyExpr(varInit), + opt.fac.CopyExpr(remaining)) + opt.sanitizeMacro(macroID, macroExpr) + return +} + +// NewCall creates a global function call invocation expression. +// +// Example: +// +// countByField(list, fieldName) +// - function: countByField +// - args: [list, fieldName] +func (opt *optimizerExprFactory) NewCall(function string, args ...ast.Expr) ast.Expr { + return opt.fac.NewCall(opt.nextID(), function, args...) +} + +// NewMemberCall creates a member function call invocation expression where 'target' is the receiver of the call. +// +// Example: +// +// list.countByField(fieldName) +// - function: countByField +// - target: list +// - args: [fieldName] +func (opt *optimizerExprFactory) NewMemberCall(function string, target ast.Expr, args ...ast.Expr) ast.Expr { + return opt.fac.NewMemberCall(opt.nextID(), function, target, args...) +} + +// NewIdent creates a new identifier expression. +// +// Examples: +// +// - simple_var_name +// - qualified.subpackage.var_name +func (opt *optimizerExprFactory) NewIdent(name string) ast.Expr { + return opt.fac.NewIdent(opt.nextID(), name) +} + +// NewLiteral creates a new literal expression value. +// +// The range of valid values for a literal generated during optimization is different than for expressions +// generated via parsing / type-checking, as the ref.Val may be _any_ CEL value so long as the value can +// be converted back to a literal-like form. +func (opt *optimizerExprFactory) NewLiteral(value ref.Val) ast.Expr { + return opt.fac.NewLiteral(opt.nextID(), value) +} + +// NewList creates a list expression with a set of optional indices. +// +// Examples: +// +// [a, b] +// - elems: [a, b] +// - optIndices: [] +// +// [a, ?b, ?c] +// - elems: [a, b, c] +// - optIndices: [1, 2] +func (opt *optimizerExprFactory) NewList(elems []ast.Expr, optIndices []int32) ast.Expr { + return opt.fac.NewList(opt.nextID(), elems, optIndices) +} + +// NewMap creates a map from a set of entry expressions which contain a key and value expression. +func (opt *optimizerExprFactory) NewMap(entries []ast.EntryExpr) ast.Expr { + return opt.fac.NewMap(opt.nextID(), entries) +} + +// NewMapEntry creates a map entry with a key and value expression and a flag to indicate whether the +// entry is optional. +// +// Examples: +// +// {a: b} +// - key: a +// - value: b +// - optional: false +// +// {?a: ?b} +// - key: a +// - value: b +// - optional: true +func (opt *optimizerExprFactory) NewMapEntry(key, value ast.Expr, isOptional bool) ast.EntryExpr { + return opt.fac.NewMapEntry(opt.nextID(), key, value, isOptional) +} + +// NewHasMacro generates a test-only select expression to be included within an AST and an unexpanded +// has() macro call signature to be inserted into the source info macro call metadata. +func (opt *optimizerExprFactory) NewHasMacro(macroID int64, s ast.Expr) (astExpr, macroExpr ast.Expr) { + sel := s.AsSelect() + astExpr = opt.fac.NewPresenceTest(macroID, sel.Operand(), sel.FieldName()) + macroExpr = opt.fac.NewCall(0, "has", + opt.NewSelect(opt.fac.CopyExpr(sel.Operand()), sel.FieldName())) + opt.sanitizeMacro(macroID, macroExpr) + return +} + +// NewSelect creates a select expression where a field value is selected from an operand. +// +// Example: +// +// msg.field_name +// - operand: msg +// - field: field_name +func (opt *optimizerExprFactory) NewSelect(operand ast.Expr, field string) ast.Expr { + return opt.fac.NewSelect(opt.nextID(), operand, field) +} + +// NewStruct creates a new typed struct value with an set of field initializations. +// +// Example: +// +// pkg.TypeName{field: value} +// - typeName: pkg.TypeName +// - fields: [{field: value}] +func (opt *optimizerExprFactory) NewStruct(typeName string, fields []ast.EntryExpr) ast.Expr { + return opt.fac.NewStruct(opt.nextID(), typeName, fields) +} + +// NewStructField creates a struct field initialization. +// +// Examples: +// +// {count: 3u} +// - field: count +// - value: 3u +// - optional: false +// +// {?count: x} +// - field: count +// - value: x +// - optional: true +func (opt *optimizerExprFactory) NewStructField(field string, value ast.Expr, isOptional bool) ast.EntryExpr { + return opt.fac.NewStructField(opt.nextID(), field, value, isOptional) +} + +// UpdateExpr updates the target expression with the updated content while preserving macro metadata. +// +// There are four scenarios during the update to consider: +// 1. target is not macro, updated is not macro +// 2. target is macro, updated is not macro +// 3. target is macro, updated is macro +// 4. target is not macro, updated is macro +// +// When the target is a macro already, it may either be updated to a new macro function +// body if the update is also a macro, or it may be removed altogether if the update is +// a macro. +// +// When the update is a macro, then the target references within other macros must be +// updated to point to the new updated macro. Otherwise, other macros which pointed to +// the target body must be replaced with copies of the updated expression body. +func (opt *optimizerExprFactory) UpdateExpr(target, updated ast.Expr) { + // Update the expression + target.SetKindCase(updated) + + // Early return if there's no macros present sa the source info reflects the + // macro set from the target and updated expressions. + if len(opt.sourceInfo.MacroCalls()) == 0 { + return + } + // Determine whether the target expression was a macro. + _, targetIsMacro := opt.sourceInfo.GetMacroCall(target.ID()) + + // Determine whether the updated expression was a macro. + updatedMacro, updatedIsMacro := opt.sourceInfo.GetMacroCall(updated.ID()) + + if updatedIsMacro { + // If the updated call was a macro, then updated id maps to target id, + // and the updated macro moves into the target id slot. + opt.sourceInfo.ClearMacroCall(updated.ID()) + opt.sourceInfo.SetMacroCall(target.ID(), updatedMacro) + } else if targetIsMacro { + // Otherwise if the target expr was a macro, but is no longer, clear + // the macro reference. + opt.sourceInfo.ClearMacroCall(target.ID()) + } + + // Punch holes in the updated value where macros references exist. + macroExpr := opt.fac.CopyExpr(target) + macroRefVisitor := ast.NewExprVisitor(func(e ast.Expr) { + if _, exists := opt.sourceInfo.GetMacroCall(e.ID()); exists { + e.SetKindCase(nil) + } + }) + ast.PostOrderVisit(macroExpr, macroRefVisitor) + + // Update any references to the expression within a macro + macroVisitor := ast.NewExprVisitor(func(call ast.Expr) { + // Update the target expression to point to the macro expression which + // will be empty if the updated expression was a macro. + if call.ID() == target.ID() { + call.SetKindCase(opt.fac.CopyExpr(macroExpr)) + } + // Update the macro call expression if it refers to the updated expression + // id which has since been remapped to the target id. + if call.ID() == updated.ID() { + // Either ensure the expression is a macro reference or a populated with + // the relevant sub-expression if the updated expr was not a macro. + if updatedIsMacro { + call.SetKindCase(nil) + } else { + call.SetKindCase(opt.fac.CopyExpr(macroExpr)) + } + // Since SetKindCase does not renumber the id, ensure the references to + // the old 'updated' id are mapped to the target id. + call.RenumberIDs(func(id int64) int64 { + if id == updated.ID() { + return target.ID() + } + return id + }) + } + }) + for _, call := range opt.sourceInfo.MacroCalls() { + ast.PostOrderVisit(call, macroVisitor) + } +} + +func (opt *optimizerExprFactory) sanitizeMacro(macroID int64, macroExpr ast.Expr) { + macroRefVisitor := ast.NewExprVisitor(func(e ast.Expr) { + if _, exists := opt.sourceInfo.GetMacroCall(e.ID()); exists && e.ID() != macroID { + e.SetKindCase(nil) + } + }) + ast.PostOrderVisit(macroExpr, macroRefVisitor) +} diff --git a/vendor/github.com/google/cel-go/cel/options.go b/vendor/github.com/google/cel-go/cel/options.go new file mode 100644 index 0000000000..fee67323c8 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/options.go @@ -0,0 +1,886 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "errors" + "fmt" + + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protodesc" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" + "google.golang.org/protobuf/types/dynamicpb" + + "github.com/google/cel-go/checker" + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/env" + "github.com/google/cel-go/common/functions" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/pb" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/interpreter" + "github.com/google/cel-go/parser" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + descpb "google.golang.org/protobuf/types/descriptorpb" +) + +// These constants beginning with "Feature" enable optional behavior in +// the library. See the documentation for each constant to see its +// effects, compatibility restrictions, and standard conformance. +const ( + _ = iota + + // Enable the tracking of function call expressions replaced by macros. + featureEnableMacroCallTracking + + // Enable the use of cross-type numeric comparisons at the type-checker. + featureCrossTypeNumericComparisons + + // Enable eager validation of declarations to ensure that Env values created + // with `Extend` inherit a validated list of declarations from the parent Env. + featureEagerlyValidateDeclarations + + // Enable the use of the default UTC timezone when a timezone is not specified + // on a CEL timestamp operation. This fixes the scenario where the input time + // is not already in UTC. + featureDefaultUTCTimeZone + + // Enable the serialization of logical operator ASTs as variadic calls, thus + // compressing the logic graph to a single call when multiple like-operator + // expressions occur: e.g. a && b && c && d -> call(_&&_, [a, b, c, d]) + featureVariadicLogicalASTs + + // Enable error generation when a presence test or optional field selection is + // performed on a primitive type. + featureEnableErrorOnBadPresenceTest + + // Enable escape syntax for field identifiers (`). + featureIdentEscapeSyntax +) + +var featureIDsToNames = map[int]string{ + featureEnableMacroCallTracking: "cel.feature.macro_call_tracking", + featureCrossTypeNumericComparisons: "cel.feature.cross_type_numeric_comparisons", + featureIdentEscapeSyntax: "cel.feature.backtick_escape_syntax", +} + +func featureNameByID(id int) (string, bool) { + name, found := featureIDsToNames[id] + return name, found +} + +func featureIDByName(name string) (int, bool) { + for id, n := range featureIDsToNames { + if n == name { + return id, true + } + } + return 0, false +} + +// EnvOption is a functional interface for configuring the environment. +type EnvOption func(e *Env) (*Env, error) + +// ClearMacros options clears all parser macros. +// +// Clearing macros will ensure CEL expressions can only contain linear evaluation paths, as +// comprehensions such as `all` and `exists` are enabled only via macros. +func ClearMacros() EnvOption { + return func(e *Env) (*Env, error) { + e.macros = NoMacros + return e, nil + } +} + +// CustomTypeAdapter swaps the default types.Adapter implementation with a custom one. +// +// Note: This option must be specified before the Types and TypeDescs options when used together. +func CustomTypeAdapter(adapter types.Adapter) EnvOption { + return func(e *Env) (*Env, error) { + e.adapter = adapter + return e, nil + } +} + +// CustomTypeProvider replaces the types.Provider implementation with a custom one. +// +// The `provider` variable type may either be types.Provider or ref.TypeProvider (deprecated) +// +// Note: This option must be specified before the Types and TypeDescs options when used together. +func CustomTypeProvider(provider any) EnvOption { + return func(e *Env) (*Env, error) { + var err error + e.provider, err = maybeInteropProvider(provider) + return e, err + } +} + +// Declarations option extends the declaration set configured in the environment. +// +// Note: Declarations will by default be appended to the pre-existing declaration set configured +// for the environment. The NewEnv call builds on top of the standard CEL declarations. For a +// purely custom set of declarations use NewCustomEnv. +// +// Deprecated: use FunctionDecls and VariableDecls or FromConfig instead. +func Declarations(decls ...*exprpb.Decl) EnvOption { + declOpts := []EnvOption{} + var err error + var opt EnvOption + // Convert the declarations to `EnvOption` values ahead of time. + // Surface any errors in conversion when the options are applied. + for _, d := range decls { + opt, err = ExprDeclToDeclaration(d) + if err != nil { + break + } + declOpts = append(declOpts, opt) + } + return func(e *Env) (*Env, error) { + if err != nil { + return nil, err + } + for _, o := range declOpts { + e, err = o(e) + if err != nil { + return nil, err + } + } + return e, nil + } +} + +// EagerlyValidateDeclarations ensures that any collisions between configured declarations are caught +// at the time of the `NewEnv` call. +// +// Eagerly validating declarations is also useful for bootstrapping a base `cel.Env` value. +// Calls to base `Env.Extend()` will be significantly faster when declarations are eagerly validated +// as declarations will be collision-checked at most once and only incrementally by way of `Extend` +// +// Disabled by default as not all environments are used for type-checking. +func EagerlyValidateDeclarations(enabled bool) EnvOption { + return features(featureEagerlyValidateDeclarations, enabled) +} + +// HomogeneousAggregateLiterals disables mixed type list and map literal values. +// +// Note, it is still possible to have heterogeneous aggregates when provided as variables to the +// expression, as well as via conversion of well-known dynamic types, or with unchecked +// expressions. +func HomogeneousAggregateLiterals() EnvOption { + return ASTValidators(ValidateHomogeneousAggregateLiterals()) +} + +// variadicLogicalOperatorASTs flatten like-operator chained logical expressions into a single +// variadic call with N-terms. This behavior is useful when serializing to a protocol buffer as +// it will reduce the number of recursive calls needed to deserialize the AST later. +// +// For example, given the following expression the call graph will be rendered accordingly: +// +// expression: a && b && c && (d || e) +// ast: call(_&&_, [a, b, c, call(_||_, [d, e])]) +func variadicLogicalOperatorASTs() EnvOption { + return features(featureVariadicLogicalASTs, true) +} + +// Macros option extends the macro set configured in the environment. +// +// Note: This option must be specified after ClearMacros if used together. +func Macros(macros ...Macro) EnvOption { + return func(e *Env) (*Env, error) { + e.macros = append(e.macros, macros...) + return e, nil + } +} + +// Container sets the container for resolving variable names. Defaults to an empty container. +// +// If all references within an expression are relative to a protocol buffer package, then +// specifying a container of `google.type` would make it possible to write expressions such as +// `Expr{expression: 'a < b'}` instead of having to write `google.type.Expr{...}`. +func Container(name string) EnvOption { + return func(e *Env) (*Env, error) { + cont, err := e.Container.Extend(containers.Name(name)) + if err != nil { + return nil, err + } + e.Container = cont + return e, nil + } +} + +// Abbrevs configures a set of simple names as abbreviations for fully-qualified names. +// +// An abbreviation (abbrev for short) is a simple name that expands to a fully-qualified name. +// Abbreviations can be useful when working with variables, functions, and especially types from +// multiple namespaces: +// +// // CEL object construction +// qual.pkg.version.ObjTypeName{ +// field: alt.container.ver.FieldTypeName{value: ...} +// } +// +// Only one the qualified names above may be used as the CEL container, so at least one of these +// references must be a long qualified name within an otherwise short CEL program. Using the +// following abbreviations, the program becomes much simpler: +// +// // CEL Go option +// Abbrevs("qual.pkg.version.ObjTypeName", "alt.container.ver.FieldTypeName") +// // Simplified Object construction +// ObjTypeName{field: FieldTypeName{value: ...}} +// +// There are a few rules for the qualified names and the simple abbreviations generated from them: +// - Qualified names must be dot-delimited, e.g. `package.subpkg.name`. +// - The last element in the qualified name is the abbreviation. +// - Abbreviations must not collide with each other. +// - The abbreviation must not collide with unqualified names in use. +// +// Abbreviations are distinct from container-based references in the following important ways: +// - Abbreviations must expand to a fully-qualified name. +// - Expanded abbreviations do not participate in namespace resolution. +// - Abbreviation expansion is done instead of the container search for a matching identifier. +// - Containers follow C++ namespace resolution rules with searches from the most qualified name +// +// to the least qualified name. +// +// - Container references within the CEL program may be relative, and are resolved to fully +// +// qualified names at either type-check time or program plan time, whichever comes first. +// +// If there is ever a case where an identifier could be in both the container and as an +// abbreviation, the abbreviation wins as this will ensure that the meaning of a program is +// preserved between compilations even as the container evolves. +func Abbrevs(qualifiedNames ...string) EnvOption { + return func(e *Env) (*Env, error) { + cont, err := e.Container.Extend(containers.Abbrevs(qualifiedNames...)) + if err != nil { + return nil, err + } + e.Container = cont + return e, nil + } +} + +// customTypeRegistry is an internal-only interface containing the minimum methods required to support +// custom types. It is a subset of methods from ref.TypeRegistry. +type customTypeRegistry interface { + RegisterDescriptor(protoreflect.FileDescriptor) error + RegisterType(...ref.Type) error +} + +// Types adds one or more type declarations to the environment, allowing for construction of +// type-literals whose definitions are included in the common expression built-in set. +// +// The input types may either be instances of `proto.Message` or `ref.Type`. Any other type +// provided to this option will result in an error. +// +// Well-known protobuf types within the `google.protobuf.*` package are included in the standard +// environment by default. +// +// Note: This option must be specified after the CustomTypeProvider option when used together. +func Types(addTypes ...any) EnvOption { + return func(e *Env) (*Env, error) { + reg, isReg := e.provider.(customTypeRegistry) + if !isReg { + return nil, fmt.Errorf("custom types not supported by provider: %T", e.provider) + } + for _, t := range addTypes { + switch v := t.(type) { + case proto.Message: + fdMap := pb.CollectFileDescriptorSet(v) + for _, fd := range fdMap { + err := reg.RegisterDescriptor(fd) + if err != nil { + return nil, err + } + } + case ref.Type: + err := reg.RegisterType(v) + if err != nil { + return nil, err + } + default: + return nil, fmt.Errorf("unsupported type: %T", t) + } + } + return e, nil + } +} + +// TypeDescs adds type declarations from any protoreflect.FileDescriptor, protoregistry.Files, +// google.protobuf.FileDescriptorProto or google.protobuf.FileDescriptorSet provided. +// +// Note that messages instantiated from these descriptors will be *dynamicpb.Message values +// rather than the concrete message type. +// +// TypeDescs are hermetic to a single Env object, but may be copied to other Env values via +// extension or by re-using the same EnvOption with another NewEnv() call. +func TypeDescs(descs ...any) EnvOption { + return func(e *Env) (*Env, error) { + reg, isReg := e.provider.(customTypeRegistry) + if !isReg { + return nil, fmt.Errorf("custom types not supported by provider: %T", e.provider) + } + // Scan the input descriptors for FileDescriptorProto messages and accumulate them into a + // synthetic FileDescriptorSet as the FileDescriptorProto messages may refer to each other + // and will not resolve properly unless they are part of the same set. + var fds *descpb.FileDescriptorSet + for _, d := range descs { + switch f := d.(type) { + case *descpb.FileDescriptorProto: + if fds == nil { + fds = &descpb.FileDescriptorSet{ + File: []*descpb.FileDescriptorProto{}, + } + } + fds.File = append(fds.File, f) + } + } + if fds != nil { + if err := registerFileSet(reg, fds); err != nil { + return nil, err + } + } + for _, d := range descs { + switch f := d.(type) { + case *protoregistry.Files: + if err := registerFiles(reg, f); err != nil { + return nil, err + } + case protoreflect.FileDescriptor: + if err := reg.RegisterDescriptor(f); err != nil { + return nil, err + } + case *descpb.FileDescriptorSet: + if err := registerFileSet(reg, f); err != nil { + return nil, err + } + case *descpb.FileDescriptorProto: + // skip, handled as a synthetic file descriptor set. + default: + return nil, fmt.Errorf("unsupported type descriptor: %T", d) + } + } + return e, nil + } +} + +func registerFileSet(reg customTypeRegistry, fileSet *descpb.FileDescriptorSet) error { + files, err := protodesc.NewFiles(fileSet) + if err != nil { + return fmt.Errorf("protodesc.NewFiles(%v) failed: %v", fileSet, err) + } + return registerFiles(reg, files) +} + +func registerFiles(reg customTypeRegistry, files *protoregistry.Files) error { + var err error + files.RangeFiles(func(fd protoreflect.FileDescriptor) bool { + err = reg.RegisterDescriptor(fd) + return err == nil + }) + return err +} + +// ProgramOption is a functional interface for configuring evaluation bindings and behaviors. +type ProgramOption func(p *prog) (*prog, error) + +// CustomDecorator appends an InterpreterDecorator to the program. +// +// InterpretableDecorators can be used to inspect, alter, or replace the Program plan. +func CustomDecorator(dec interpreter.InterpretableDecorator) ProgramOption { + return func(p *prog) (*prog, error) { + p.plannerOptions = append(p.plannerOptions, interpreter.CustomDecorator(dec)) + return p, nil + } +} + +// Functions adds function overloads that extend or override the set of CEL built-ins. +// +// Deprecated: use Function() instead to declare the function, its overload signatures, +// and the overload implementations. +func Functions(funcs ...*functions.Overload) ProgramOption { + return func(p *prog) (*prog, error) { + if err := p.dispatcher.Add(funcs...); err != nil { + return nil, err + } + return p, nil + } +} + +// Globals sets the global variable values for a given program. These values may be shadowed by +// variables with the same name provided to the Eval() call. If Globals is used in a Library with +// a Lib EnvOption, vars may shadow variables provided by previously added libraries. +// +// The vars value may either be an `cel.Activation` instance or a `map[string]any`. +func Globals(vars any) ProgramOption { + return func(p *prog) (*prog, error) { + defaultVars, err := NewActivation(vars) + if err != nil { + return nil, err + } + if p.defaultVars != nil { + defaultVars = interpreter.NewHierarchicalActivation(p.defaultVars, defaultVars) + } + p.defaultVars = defaultVars + return p, nil + } +} + +// OptimizeRegex provides a way to replace the InterpretableCall for regex functions. This can be used +// to compile regex string constants at program creation time and report any errors and then use the +// compiled regex for all regex function invocations. +func OptimizeRegex(regexOptimizations ...*interpreter.RegexOptimization) ProgramOption { + return func(p *prog) (*prog, error) { + p.regexOptimizations = append(p.regexOptimizations, regexOptimizations...) + return p, nil + } +} + +// ConfigOptionFactory declares a signature which accepts a configuration element, e.g. env.Extension +// and optionally produces an EnvOption in response. +// +// If there are multiple ConfigOptionFactory values which could apply to the same configuration node +// the first one that returns an EnvOption and a `true` response will be used, and the config node +// will not be passed along to any other option factory. +// +// Only the *env.Extension type is provided at this time, but validators, optimizers, and other tuning +// parameters may be supported in the future. +type ConfigOptionFactory func(any) (EnvOption, bool) + +// FromConfig produces and applies a set of EnvOption values derived from an env.Config object. +// +// For configuration elements which refer to features outside of the `cel` package, an optional set of +// ConfigOptionFactory values may be passed in to support the conversion from static configuration to +// configured cel.Env value. +// +// Note: disabling the standard library will clear the EnvOptions values previously set for the +// environment with the exception of propagating types and adapters over to the new environment. +// +// Note: to support custom types referenced in the configuration file, you must ensure that one of +// the following options appears before the FromConfig option: Types, TypeDescs, or CustomTypeProvider +// as the type provider configured at the time when the config is processed is the one used to derive +// type references from the configuration. +func FromConfig(config *env.Config, optFactories ...ConfigOptionFactory) EnvOption { + return func(e *Env) (*Env, error) { + if err := config.Validate(); err != nil { + return nil, err + } + opts, err := configToEnvOptions(config, e.CELTypeProvider(), optFactories) + if err != nil { + return nil, err + } + for _, o := range opts { + e, err = o(e) + if err != nil { + return nil, err + } + } + return e, nil + } +} + +// configToEnvOptions generates a set of EnvOption values (or error) based on a config, a type provider, +// and an optional set of environment options. +func configToEnvOptions(config *env.Config, provider types.Provider, optFactories []ConfigOptionFactory) ([]EnvOption, error) { + envOpts := []EnvOption{} + // Configure the standard lib subset. + if config.StdLib != nil { + envOpts = append(envOpts, func(e *Env) (*Env, error) { + if e.HasLibrary("cel.lib.std") { + return nil, errors.New("invalid subset of stdlib: create a custom env") + } + return e, nil + }) + if !config.StdLib.Disabled { + envOpts = append(envOpts, StdLib(StdLibSubset(config.StdLib))) + } + } else { + envOpts = append(envOpts, StdLib()) + } + + // Configure the container + if config.Container != "" { + envOpts = append(envOpts, Container(config.Container)) + } + + // Configure abbreviations + for _, imp := range config.Imports { + envOpts = append(envOpts, Abbrevs(imp.Name)) + } + + // Configure the context variable declaration + if config.ContextVariable != nil { + typeName := config.ContextVariable.TypeName + if _, found := provider.FindStructType(typeName); !found { + return nil, fmt.Errorf("invalid context proto type: %q", typeName) + } + // Attempt to instantiate the proto in order to reflect to its descriptor + msg := provider.NewValue(typeName, map[string]ref.Val{}) + pbMsg, ok := msg.Value().(proto.Message) + if !ok { + return nil, fmt.Errorf("unsupported context type: %T", msg.Value()) + } + envOpts = append(envOpts, DeclareContextProto(pbMsg.ProtoReflect().Descriptor())) + } + + // Configure variables + if len(config.Variables) != 0 { + vars := make([]*decls.VariableDecl, 0, len(config.Variables)) + for _, v := range config.Variables { + vDef, err := v.AsCELVariable(provider) + if err != nil { + return nil, err + } + vars = append(vars, vDef) + } + envOpts = append(envOpts, VariableDecls(vars...)) + } + + // Configure functions + if len(config.Functions) != 0 { + funcs := make([]*decls.FunctionDecl, 0, len(config.Functions)) + for _, f := range config.Functions { + fnDef, err := f.AsCELFunction(provider) + if err != nil { + return nil, err + } + funcs = append(funcs, fnDef) + } + envOpts = append(envOpts, FunctionDecls(funcs...)) + } + + // Configure features + for _, feat := range config.Features { + // Note, if a feature is not found, it is skipped as it is possible the feature + // is not intended to be supported publicly. In the future, a refinement of + // to this strategy to report unrecognized features and validators should probably + // be covered as a standard ConfigOptionFactory + if id, found := featureIDByName(feat.Name); found { + envOpts = append(envOpts, features(id, feat.Enabled)) + } + } + + // Configure validators + for _, val := range config.Validators { + if fac, found := astValidatorFactories[val.Name]; found { + envOpts = append(envOpts, func(e *Env) (*Env, error) { + validator, err := fac(val) + if err != nil { + return nil, fmt.Errorf("%w", err) + } + return ASTValidators(validator)(e) + }) + } else if opt, handled := handleExtendedConfigOption(val, optFactories); handled { + envOpts = append(envOpts, opt) + } + // we don't error when the validator isn't found as it may be part + // of an extension library and enabled implicitly. + } + + // Configure extensions + for _, ext := range config.Extensions { + // version number has been validated by the call to `Validate` + ver, _ := ext.VersionNumber() + if ext.Name == "optional" { + envOpts = append(envOpts, OptionalTypes(OptionalTypesVersion(ver))) + } else { + opt, handled := handleExtendedConfigOption(ext, optFactories) + if !handled { + return nil, fmt.Errorf("unrecognized extension: %s", ext.Name) + } + envOpts = append(envOpts, opt) + } + } + + return envOpts, nil +} + +func handleExtendedConfigOption(conf any, optFactories []ConfigOptionFactory) (EnvOption, bool) { + for _, optFac := range optFactories { + if opt, useOption := optFac(conf); useOption { + return opt, true + } + } + return nil, false +} + +// EvalOption indicates an evaluation option that may affect the evaluation behavior or information +// in the output result. +type EvalOption int + +const ( + // OptTrackState will cause the runtime to return an immutable EvalState value in the Result. + OptTrackState EvalOption = 1 << iota + + // OptExhaustiveEval causes the runtime to disable short-circuits and track state. + OptExhaustiveEval EvalOption = 1< 0 { + plannerOptions = append(plannerOptions, interpreter.InterruptableEval()) + } + // Enable constant folding first. + if p.evalOpts&OptOptimize == OptOptimize { + plannerOptions = append(plannerOptions, interpreter.Optimize()) + p.regexOptimizations = append(p.regexOptimizations, interpreter.MatchesRegexOptimization) + } + // Enable regex compilation of constants immediately after folding constants. + if len(p.regexOptimizations) > 0 { + plannerOptions = append(plannerOptions, interpreter.CompileRegexConstants(p.regexOptimizations...)) + } + + // Enable exhaustive eval, state tracking and cost tracking last since they require a factory. + if p.evalOpts&(OptExhaustiveEval|OptTrackState|OptTrackCost) != 0 { + costOptCount := len(p.costOptions) + if p.costLimit != nil { + costOptCount++ + } + costOpts := make([]interpreter.CostTrackerOption, 0, costOptCount) + costOpts = append(costOpts, p.costOptions...) + if p.costLimit != nil { + costOpts = append(costOpts, interpreter.CostTrackerLimit(*p.costLimit)) + } + trackerFactory := func() (*interpreter.CostTracker, error) { + return interpreter.NewCostTracker(p.callCostEstimator, costOpts...) + } + var observers []interpreter.PlannerOption + if p.evalOpts&(OptExhaustiveEval|OptTrackState) != 0 { + // EvalStateObserver is required for OptExhaustiveEval. + observers = append(observers, interpreter.EvalStateObserver()) + } + if p.evalOpts&OptTrackCost == OptTrackCost { + observers = append(observers, interpreter.CostObserver(interpreter.CostTrackerFactory(trackerFactory))) + } + // Enable exhaustive eval over a basic observer since it offers a superset of features. + if p.evalOpts&OptExhaustiveEval == OptExhaustiveEval { + plannerOptions = append(plannerOptions, + append([]interpreter.PlannerOption{interpreter.ExhaustiveEval()}, observers...)...) + } else if len(observers) > 0 { + plannerOptions = append(plannerOptions, observers...) + } + } + return p.initInterpretable(a, plannerOptions) +} + +func (p *prog) initInterpretable(a *ast.AST, plannerOptions []interpreter.PlannerOption) (*prog, error) { + // When the AST has been exprAST it contains metadata that can be used to speed up program execution. + interpretable, err := p.interpreter.NewInterpretable(a, plannerOptions...) + if err != nil { + return nil, err + } + p.interpretable = interpretable + if oi, ok := interpretable.(*interpreter.ObservableInterpretable); ok { + p.observable = oi + } + return p, nil +} + +// Eval implements the Program interface method. +func (p *prog) Eval(input any) (out ref.Val, det *EvalDetails, err error) { + // Configure error recovery for unexpected panics during evaluation. Note, the use of named + // return values makes it possible to modify the error response during the recovery + // function. + defer func() { + if r := recover(); r != nil { + switch t := r.(type) { + case interpreter.EvalCancelledError: + err = t + default: + err = fmt.Errorf("internal error: %v", r) + } + } + }() + // Build a hierarchical activation if there are default vars set. + var vars Activation + switch v := input.(type) { + case Activation: + vars = v + case map[string]any: + vars = activationPool.Setup(v) + defer activationPool.Put(vars) + default: + return nil, nil, fmt.Errorf("invalid input, wanted Activation or map[string]any, got: (%T)%v", input, input) + } + if p.defaultVars != nil { + vars = interpreter.NewHierarchicalActivation(p.defaultVars, vars) + } + if p.observable != nil { + det = &EvalDetails{} + out = p.observable.ObserveEval(vars, func(observed any) { + switch o := observed.(type) { + case interpreter.EvalState: + det.state = o + case *interpreter.CostTracker: + det.costTracker = o + } + }) + } else { + out = p.interpretable.Eval(vars) + } + // The output of an internal Eval may have a value (`v`) that is a types.Err. This step + // translates the CEL value to a Go error response. This interface does not quite match the + // RPC signature which allows for multiple errors to be returned, but should be sufficient. + if types.IsError(out) { + err = out.(*types.Err) + } + return +} + +// ContextEval implements the Program interface. +func (p *prog) ContextEval(ctx context.Context, input any) (ref.Val, *EvalDetails, error) { + if ctx == nil { + return nil, nil, fmt.Errorf("context can not be nil") + } + // Configure the input, making sure to wrap Activation inputs in the special ctxActivation which + // exposes the #interrupted variable and manages rate-limited checks of the ctx.Done() state. + var vars Activation + switch v := input.(type) { + case Activation: + vars = ctxActivationPool.Setup(v, ctx.Done(), p.interruptCheckFrequency) + defer ctxActivationPool.Put(vars) + case map[string]any: + rawVars := activationPool.Setup(v) + defer activationPool.Put(rawVars) + vars = ctxActivationPool.Setup(rawVars, ctx.Done(), p.interruptCheckFrequency) + defer ctxActivationPool.Put(vars) + default: + return nil, nil, fmt.Errorf("invalid input, wanted Activation or map[string]any, got: (%T)%v", input, input) + } + return p.Eval(vars) +} + +type ctxEvalActivation struct { + parent Activation + interrupt <-chan struct{} + interruptCheckCount uint + interruptCheckFrequency uint +} + +// ResolveName implements the Activation interface method, but adds a special #interrupted variable +// which is capable of testing whether a 'done' signal is provided from a context.Context channel. +func (a *ctxEvalActivation) ResolveName(name string) (any, bool) { + if name == "#interrupted" { + a.interruptCheckCount++ + if a.interruptCheckCount%a.interruptCheckFrequency == 0 { + select { + case <-a.interrupt: + return true, true + default: + return nil, false + } + } + return nil, false + } + return a.parent.ResolveName(name) +} + +func (a *ctxEvalActivation) Parent() Activation { + return a.parent +} + +func (a *ctxEvalActivation) AsPartialActivation() (interpreter.PartialActivation, bool) { + pa, ok := a.parent.(interpreter.PartialActivation) + return pa, ok +} + +func newCtxEvalActivationPool() *ctxEvalActivationPool { + return &ctxEvalActivationPool{ + Pool: sync.Pool{ + New: func() any { + return &ctxEvalActivation{} + }, + }, + } +} + +type ctxEvalActivationPool struct { + sync.Pool +} + +// Setup initializes a pooled Activation with the ability check for context.Context cancellation +func (p *ctxEvalActivationPool) Setup(vars Activation, done <-chan struct{}, interruptCheckRate uint) *ctxEvalActivation { + a := p.Pool.Get().(*ctxEvalActivation) + a.parent = vars + a.interrupt = done + a.interruptCheckCount = 0 + a.interruptCheckFrequency = interruptCheckRate + return a +} + +type evalActivation struct { + vars map[string]any + lazyVars map[string]any +} + +// ResolveName looks up the value of the input variable name, if found. +// +// Lazy bindings may be supplied within the map-based input in either of the following forms: +// - func() any +// - func() ref.Val +// +// The lazy binding will only be invoked once per evaluation. +// +// Values which are not represented as ref.Val types on input may be adapted to a ref.Val using +// the types.Adapter configured in the environment. +func (a *evalActivation) ResolveName(name string) (any, bool) { + v, found := a.vars[name] + if !found { + return nil, false + } + switch obj := v.(type) { + case func() ref.Val: + if resolved, found := a.lazyVars[name]; found { + return resolved, true + } + lazy := obj() + a.lazyVars[name] = lazy + return lazy, true + case func() any: + if resolved, found := a.lazyVars[name]; found { + return resolved, true + } + lazy := obj() + a.lazyVars[name] = lazy + return lazy, true + default: + return obj, true + } +} + +// Parent implements the Activation interface +func (a *evalActivation) Parent() Activation { + return nil +} + +func newEvalActivationPool() *evalActivationPool { + return &evalActivationPool{ + Pool: sync.Pool{ + New: func() any { + return &evalActivation{lazyVars: make(map[string]any)} + }, + }, + } +} + +type evalActivationPool struct { + sync.Pool +} + +// Setup initializes a pooled Activation object with the map input. +func (p *evalActivationPool) Setup(vars map[string]any) *evalActivation { + a := p.Pool.Get().(*evalActivation) + a.vars = vars + return a +} + +func (p *evalActivationPool) Put(value any) { + a := value.(*evalActivation) + for k := range a.lazyVars { + delete(a.lazyVars, k) + } + p.Pool.Put(a) +} + +var ( + // activationPool is an internally managed pool of Activation values that wrap map[string]any inputs + activationPool = newEvalActivationPool() + + // ctxActivationPool is an internally managed pool of Activation values that expose a special #interrupted variable + ctxActivationPool = newCtxEvalActivationPool() +) diff --git a/vendor/github.com/google/cel-go/cel/prompt.go b/vendor/github.com/google/cel-go/cel/prompt.go new file mode 100644 index 0000000000..929a26f91f --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/prompt.go @@ -0,0 +1,155 @@ +// Copyright 2025 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + _ "embed" + "sort" + "strings" + "text/template" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" +) + +//go:embed templates/authoring.tmpl +var authoringPrompt string + +// AuthoringPrompt creates a prompt template from a CEL environment for the purpose of AI-assisted authoring. +func AuthoringPrompt(env *Env) (*Prompt, error) { + funcMap := template.FuncMap{ + "split": func(str string) []string { return strings.Split(str, "\n") }, + } + tmpl := template.New("cel").Funcs(funcMap) + tmpl, err := tmpl.Parse(authoringPrompt) + if err != nil { + return nil, err + } + return &Prompt{ + Persona: defaultPersona, + FormatRules: defaultFormatRules, + GeneralUsage: defaultGeneralUsage, + tmpl: tmpl, + env: env, + }, nil +} + +// Prompt represents the core components of an LLM prompt based on a CEL environment. +// +// All fields of the prompt may be overwritten / modified with support for rendering the +// prompt to a human-readable string. +type Prompt struct { + // Persona indicates something about the kind of user making the request + Persona string + + // FormatRules indicate how the LLM should generate its output + FormatRules string + + // GeneralUsage specifies additional context on how CEL should be used. + GeneralUsage string + + // tmpl is the text template base-configuration for rendering text. + tmpl *template.Template + + // env reference used to collect variables, functions, and macros available to the prompt. + env *Env +} + +type promptInst struct { + *Prompt + + Variables []*common.Doc + Macros []*common.Doc + Functions []*common.Doc + UserPrompt string +} + +// Render renders the user prompt with the associated context from the prompt template +// for use with LLM generators. +func (p *Prompt) Render(userPrompt string) string { + var buffer strings.Builder + vars := make([]*common.Doc, len(p.env.Variables())) + for i, v := range p.env.Variables() { + vars[i] = v.Documentation() + } + sort.SliceStable(vars, func(i, j int) bool { + return vars[i].Name < vars[j].Name + }) + macs := make([]*common.Doc, len(p.env.Macros())) + for i, m := range p.env.Macros() { + macs[i] = m.(common.Documentor).Documentation() + } + funcs := make([]*common.Doc, 0, len(p.env.Functions())) + for _, f := range p.env.Functions() { + if _, hidden := hiddenFunctions[f.Name()]; hidden { + continue + } + funcs = append(funcs, f.Documentation()) + } + sort.SliceStable(funcs, func(i, j int) bool { + return funcs[i].Name < funcs[j].Name + }) + inst := &promptInst{ + Prompt: p, + Variables: vars, + Macros: macs, + Functions: funcs, + UserPrompt: userPrompt} + p.tmpl.Execute(&buffer, inst) + return buffer.String() +} + +const ( + defaultPersona = `You are a software engineer with expertise in networking and application security +authoring boolean Common Expression Language (CEL) expressions to ensure firewall, +networking, authentication, and data access is only permitted when all conditions +are satisfied.` + + defaultFormatRules = `Output your response as a CEL expression. + +Write the expression with the comment on the first line and the expression on the +subsequent lines. Format the expression using 80-character line limits commonly +found in C++ or Java code.` + + defaultGeneralUsage = `CEL supports Protocol Buffer and JSON types, as well as simple types and aggregate types. + +Simple types include bool, bytes, double, int, string, and uint: + +* double literals must always include a decimal point: 1.0, 3.5, -2.2 +* uint literals must be positive values suffixed with a 'u': 42u +* byte literals are strings prefixed with a 'b': b'1235' +* string literals can use either single quotes or double quotes: 'hello', "world" +* string literals can also be treated as raw strings that do not require any + escaping within the string by using the 'R' prefix: R"""quote: "hi" """ + +Aggregate types include list and map: + +* list literals consist of zero or more values between brackets: "['a', 'b', 'c']" +* map literal consist of colon-separated key-value pairs within braces: "{'key1': 1, 'key2': 2}" +* Only int, uint, string, and bool types are valid map keys. +* Maps containing HTTP headers must always use lower-cased string keys. + +Comments start with two-forward slashes followed by text and a newline.` +) + +var ( + hiddenFunctions = map[string]bool{ + overloads.DeprecatedIn: true, + operators.OldIn: true, + operators.OldNotStrictlyFalse: true, + operators.NotStrictlyFalse: true, + } +) diff --git a/vendor/github.com/google/cel-go/cel/templates/authoring.tmpl b/vendor/github.com/google/cel-go/cel/templates/authoring.tmpl new file mode 100644 index 0000000000..d6b3da5c6c --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/templates/authoring.tmpl @@ -0,0 +1,56 @@ +{{define "variable"}}{{.Name}} is a {{.Type}} +{{- end -}} + +{{define "macro" -}} +{{.Name}} macro{{if .Description}} - {{range split .Description}}{{.}} {{end}} +{{end}} +{{range .Children}}{{range split .Description}} {{.}} +{{end}} +{{- end -}} +{{- end -}} + +{{define "overload" -}} +{{if .Children}}{{range .Children}}{{range split .Description}} {{.}} +{{end}} +{{- end -}} +{{else}} {{.Signature}} +{{end}} +{{- end -}} + +{{define "function" -}} +{{.Name}}{{if .Description}} - {{range split .Description}}{{.}} {{end}} +{{end}} +{{range .Children}}{{template "overload" .}}{{end}} +{{- end -}} + +{{.Persona}} + +{{.FormatRules}} + +{{if or .Variables .Macros .Functions -}} +Only use the following variables, macros, and functions in expressions. +{{if .Variables}} +Variables: + +{{range .Variables}}* {{template "variable" .}} +{{end -}} + +{{end -}} +{{if .Macros}} +Macros: + +{{range .Macros}}* {{template "macro" .}} +{{end -}} + +{{end -}} +{{if .Functions}} +Functions: + +{{range .Functions}}* {{template "function" .}} +{{end -}} + +{{end -}} +{{- end -}} +{{.GeneralUsage}} + +{{.UserPrompt}} diff --git a/vendor/github.com/google/cel-go/cel/validator.go b/vendor/github.com/google/cel-go/cel/validator.go new file mode 100644 index 0000000000..5f06b2dd55 --- /dev/null +++ b/vendor/github.com/google/cel-go/cel/validator.go @@ -0,0 +1,439 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package cel + +import ( + "fmt" + "reflect" + "regexp" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/env" + "github.com/google/cel-go/common/overloads" +) + +const ( + durationValidatorName = "cel.validator.duration" + regexValidatorName = "cel.validator.matches" + timestampValidatorName = "cel.validator.timestamp" + homogeneousValidatorName = "cel.validator.homogeneous_literals" + nestingLimitValidatorName = "cel.validator.comprehension_nesting_limit" + + // HomogeneousAggregateLiteralExemptFunctions is the ValidatorConfig key used to configure + // the set of function names which are exempt from homogeneous type checks. The expected type + // is a string list of function names. + // + // As an example, the `.format([args])` call expects the input arguments list to be + // comprised of a variety of types which correspond to the types expected by the format control + // clauses; however, all other uses of a mixed element type list, would be unexpected. + HomogeneousAggregateLiteralExemptFunctions = homogeneousValidatorName + ".exempt" +) + +var ( + astValidatorFactories = map[string]ASTValidatorFactory{ + nestingLimitValidatorName: func(val *env.Validator) (ASTValidator, error) { + if limit, found := val.ConfigValue("limit"); found { + if val, isInt := limit.(int); isInt { + return ValidateComprehensionNestingLimit(val), nil + } + return nil, fmt.Errorf("invalid validator: %s unsupported limit type: %v", nestingLimitValidatorName, limit) + } + return nil, fmt.Errorf("invalid validator: %s missing limit", nestingLimitValidatorName) + }, + durationValidatorName: func(*env.Validator) (ASTValidator, error) { + return ValidateDurationLiterals(), nil + }, + regexValidatorName: func(*env.Validator) (ASTValidator, error) { + return ValidateRegexLiterals(), nil + }, + timestampValidatorName: func(*env.Validator) (ASTValidator, error) { + return ValidateTimestampLiterals(), nil + }, + homogeneousValidatorName: func(*env.Validator) (ASTValidator, error) { + return ValidateHomogeneousAggregateLiterals(), nil + }, + } +) + +// ASTValidatorFactory creates an ASTValidator as configured by the input map +type ASTValidatorFactory func(*env.Validator) (ASTValidator, error) + +// ASTValidators configures a set of ASTValidator instances into the target environment. +// +// Validators are applied in the order in which the are specified and are treated as singletons. +// The same ASTValidator with a given name will not be applied more than once. +func ASTValidators(validators ...ASTValidator) EnvOption { + return func(e *Env) (*Env, error) { + for _, v := range validators { + if !e.HasValidator(v.Name()) { + e.validators = append(e.validators, v) + } + } + return e, nil + } +} + +// ASTValidator defines a singleton interface for validating a type-checked Ast against an environment. +// +// Note: the Issues argument is mutable in the sense that it is intended to collect errors which will be +// reported to the caller. +type ASTValidator interface { + // Name returns the name of the validator. Names must be unique. + Name() string + + // Validate validates a given Ast within an Environment and collects a set of potential issues. + // + // The ValidatorConfig is generated from the set of ASTValidatorConfigurer instances prior to + // the invocation of the Validate call. The expectation is that the validator configuration + // is created in sequence and immutable once provided to the Validate call. + // + // See individual validators for more information on their configuration keys and configuration + // properties. + Validate(*Env, ValidatorConfig, *ast.AST, *Issues) +} + +// ConfigurableASTValidator supports conversion of an object to an `env.Validator` instance used for +// YAML serialization. +type ConfigurableASTValidator interface { + // ToConfig converts the internal configuration of an ASTValidator into an env.Validator instance + // which minimally must include the validator name, but may also include a map[string]any config + // object to be serialized to YAML. The string keys represent the configuration parameter name, + // and the any value must mirror the internally supported type associated with the config key. + // + // Note: only primitive CEL types are supported by CEL validators at this time. + ToConfig() *env.Validator +} + +// ValidatorConfig provides an accessor method for querying validator configuration state. +type ValidatorConfig interface { + GetOrDefault(name string, value any) any +} + +// MutableValidatorConfig provides mutation methods for querying and updating validator configuration +// settings. +type MutableValidatorConfig interface { + ValidatorConfig + Set(name string, value any) error +} + +// ASTValidatorConfigurer indicates that this object, currently expected to be an ASTValidator, +// participates in validator configuration settings. +// +// This interface may be split from the expectation of being an ASTValidator instance in the future. +type ASTValidatorConfigurer interface { + Configure(MutableValidatorConfig) error +} + +// validatorConfig implements the ValidatorConfig and MutableValidatorConfig interfaces. +type validatorConfig struct { + data map[string]any +} + +// newValidatorConfig initializes the validator config with default values for core CEL validators. +func newValidatorConfig() *validatorConfig { + return &validatorConfig{ + data: map[string]any{ + HomogeneousAggregateLiteralExemptFunctions: []string{}, + }, + } +} + +// GetOrDefault returns the configured value for the name, if present, else the input default value. +// +// Note, the type-agreement between the input default and configured value is not checked on read. +func (config *validatorConfig) GetOrDefault(name string, value any) any { + v, found := config.data[name] + if !found { + return value + } + return v +} + +// Set configures a validator option with the given name and value. +// +// If the value had previously been set, the new value must have the same reflection type as the old one, +// or the call will error. +func (config *validatorConfig) Set(name string, value any) error { + v, found := config.data[name] + if found && reflect.TypeOf(v) != reflect.TypeOf(value) { + return fmt.Errorf("incompatible configuration type for %s, got %T, wanted %T", name, value, v) + } + config.data[name] = value + return nil +} + +// ExtendedValidations collects a set of common AST validations which reduce the likelihood of runtime errors. +// +// - Validate duration and timestamp literals +// - Ensure regex strings are valid +// - Disable mixed type list and map literals +func ExtendedValidations() EnvOption { + return ASTValidators( + ValidateDurationLiterals(), + ValidateTimestampLiterals(), + ValidateRegexLiterals(), + ValidateHomogeneousAggregateLiterals(), + ) +} + +// ValidateDurationLiterals ensures that duration literal arguments are valid immediately after type-check. +func ValidateDurationLiterals() ASTValidator { + return newFormatValidator(overloads.TypeConvertDuration, 0, evalCall) +} + +// ValidateTimestampLiterals ensures that timestamp literal arguments are valid immediately after type-check. +func ValidateTimestampLiterals() ASTValidator { + return newFormatValidator(overloads.TypeConvertTimestamp, 0, evalCall) +} + +// ValidateRegexLiterals ensures that regex patterns are validated after type-check. +func ValidateRegexLiterals() ASTValidator { + return newFormatValidator(overloads.Matches, 0, compileRegex) +} + +// ValidateHomogeneousAggregateLiterals checks that all list and map literals entries have the same types, i.e. +// no mixed list element types or mixed map key or map value types. +// +// Note: the string format call relies on a mixed element type list for ease of use, so this check skips all +// literals which occur within string format calls. +func ValidateHomogeneousAggregateLiterals() ASTValidator { + return homogeneousAggregateLiteralValidator{} +} + +// ValidateComprehensionNestingLimit ensures that comprehension nesting does not exceed the specified limit. +// +// This validator can be useful for preventing arbitrarily nested comprehensions which can take high polynomial +// time to complete. +// +// Note, this limit does not apply to comprehensions with an empty iteration range, as these comprehensions have +// no actual looping cost. The cel.bind() utilizes the comprehension structure to perform local variable +// assignments and supplies an empty iteration range, so they won't count against the nesting limit either. +func ValidateComprehensionNestingLimit(limit int) ASTValidator { + return nestingLimitValidator{limit: limit} +} + +type argChecker func(env *Env, call, arg ast.Expr) error + +func newFormatValidator(funcName string, argNum int, check argChecker) formatValidator { + return formatValidator{ + funcName: funcName, + check: check, + argNum: argNum, + } +} + +type formatValidator struct { + funcName string + argNum int + check argChecker +} + +// Name returns the unique name of this function format validator. +func (v formatValidator) Name() string { + return fmt.Sprintf("cel.validator.%s", v.funcName) +} + +// ToConfig converts the ASTValidator to an env.Validator specifying the validator name. +func (v formatValidator) ToConfig() *env.Validator { + return env.NewValidator(v.Name()) +} + +// Validate searches the AST for uses of a given function name with a constant argument and performs a check +// on whether the argument is a valid literal value. +func (v formatValidator) Validate(e *Env, _ ValidatorConfig, a *ast.AST, iss *Issues) { + root := ast.NavigateAST(a) + funcCalls := ast.MatchDescendants(root, ast.FunctionMatcher(v.funcName)) + for _, call := range funcCalls { + callArgs := call.AsCall().Args() + if len(callArgs) <= v.argNum { + continue + } + litArg := callArgs[v.argNum] + if litArg.Kind() != ast.LiteralKind { + continue + } + if err := v.check(e, call, litArg); err != nil { + iss.ReportErrorAtID(litArg.ID(), "invalid %s argument", v.funcName) + } + } +} + +func evalCall(env *Env, call, arg ast.Expr) error { + ast := &Ast{impl: ast.NewAST(call, ast.NewSourceInfo(nil))} + prg, err := env.Program(ast) + if err != nil { + return err + } + _, _, err = prg.Eval(NoVars()) + return err +} + +func compileRegex(_ *Env, _, arg ast.Expr) error { + pattern := arg.AsLiteral().Value().(string) + _, err := regexp.Compile(pattern) + return err +} + +type homogeneousAggregateLiteralValidator struct{} + +// Name returns the unique name of the homogeneous type validator. +func (homogeneousAggregateLiteralValidator) Name() string { + return homogeneousValidatorName +} + +// ToConfig converts the ASTValidator to an env.Validator specifying the validator name. +func (v homogeneousAggregateLiteralValidator) ToConfig() *env.Validator { + return env.NewValidator(v.Name()) +} + +// Validate validates that all lists and map literals have homogeneous types, i.e. don't contain dyn types. +// +// This validator makes an exception for list and map literals which occur at any level of nesting within +// string format calls. +func (v homogeneousAggregateLiteralValidator) Validate(_ *Env, c ValidatorConfig, a *ast.AST, iss *Issues) { + var exemptedFunctions []string + exemptedFunctions = c.GetOrDefault(HomogeneousAggregateLiteralExemptFunctions, exemptedFunctions).([]string) + root := ast.NavigateAST(a) + listExprs := ast.MatchDescendants(root, ast.KindMatcher(ast.ListKind)) + for _, listExpr := range listExprs { + if inExemptFunction(listExpr, exemptedFunctions) { + continue + } + l := listExpr.AsList() + elements := l.Elements() + optIndices := l.OptionalIndices() + var elemType *Type + for i, e := range elements { + et := a.GetType(e.ID()) + if isOptionalIndex(i, optIndices) { + et = et.Parameters()[0] + } + if elemType == nil { + elemType = et + continue + } + if !elemType.IsEquivalentType(et) { + v.typeMismatch(iss, e.ID(), elemType, et) + break + } + } + } + mapExprs := ast.MatchDescendants(root, ast.KindMatcher(ast.MapKind)) + for _, mapExpr := range mapExprs { + if inExemptFunction(mapExpr, exemptedFunctions) { + continue + } + m := mapExpr.AsMap() + entries := m.Entries() + var keyType, valType *Type + for _, e := range entries { + mapEntry := e.AsMapEntry() + key, val := mapEntry.Key(), mapEntry.Value() + kt, vt := a.GetType(key.ID()), a.GetType(val.ID()) + if mapEntry.IsOptional() { + vt = vt.Parameters()[0] + } + if keyType == nil && valType == nil { + keyType, valType = kt, vt + continue + } + if !keyType.IsEquivalentType(kt) { + v.typeMismatch(iss, key.ID(), keyType, kt) + } + if !valType.IsEquivalentType(vt) { + v.typeMismatch(iss, val.ID(), valType, vt) + } + } + } +} + +func inExemptFunction(e ast.NavigableExpr, exemptFunctions []string) bool { + parent, found := e.Parent() + for found { + if parent.Kind() == ast.CallKind { + fnName := parent.AsCall().FunctionName() + for _, exempt := range exemptFunctions { + if exempt == fnName { + return true + } + } + } + parent, found = parent.Parent() + } + return false +} + +func isOptionalIndex(i int, optIndices []int32) bool { + for _, optInd := range optIndices { + if i == int(optInd) { + return true + } + } + return false +} + +func (homogeneousAggregateLiteralValidator) typeMismatch(iss *Issues, id int64, expected, actual *Type) { + iss.ReportErrorAtID(id, "expected type '%s' but found '%s'", FormatCELType(expected), FormatCELType(actual)) +} + +type nestingLimitValidator struct { + limit int +} + +// Name returns the name of the nesting limit validator. +func (v nestingLimitValidator) Name() string { + return nestingLimitValidatorName +} + +// ToConfig converts the ASTValidator to an env.Validator specifying the validator name and the nesting limit +// as an integer value: {"limit": int} +func (v nestingLimitValidator) ToConfig() *env.Validator { + return env.NewValidator(v.Name()).SetConfig(map[string]any{"limit": v.limit}) +} + +// Validate implements the ASTValidator interface method. +func (v nestingLimitValidator) Validate(e *Env, _ ValidatorConfig, a *ast.AST, iss *Issues) { + root := ast.NavigateAST(a) + comprehensions := ast.MatchDescendants(root, ast.KindMatcher(ast.ComprehensionKind)) + if len(comprehensions) <= v.limit { + return + } + for _, comp := range comprehensions { + count := 0 + e := comp + hasParent := true + for hasParent { + // When the expression is not a comprehension, continue to the next ancestor. + if e.Kind() != ast.ComprehensionKind { + e, hasParent = e.Parent() + continue + } + // When the comprehension has an empty range, continue to the next ancestor + // as this comprehension does not have any associated cost. + iterRange := e.AsComprehension().IterRange() + if iterRange.Kind() == ast.ListKind && iterRange.AsList().Size() == 0 { + e, hasParent = e.Parent() + continue + } + // Otherwise check the nesting limit. + count++ + if count > v.limit { + iss.ReportErrorAtID(comp.ID(), "comprehension exceeds nesting limit") + break + } + e, hasParent = e.Parent() + } + } +} diff --git a/vendor/github.com/google/cel-go/checker/BUILD.bazel b/vendor/github.com/google/cel-go/checker/BUILD.bazel new file mode 100644 index 0000000000..678b412a95 --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/BUILD.bazel @@ -0,0 +1,64 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "checker.go", + "cost.go", + "env.go", + "errors.go", + "format.go", + "mapping.go", + "options.go", + "printer.go", + "scopes.go", + "types.go", + ], + importpath = "github.com/google/cel-go/checker", + visibility = ["//visibility:public"], + deps = [ + "//checker/decls:go_default_library", + "//common:go_default_library", + "//common/ast:go_default_library", + "//common/containers:go_default_library", + "//common/debug:go_default_library", + "//common/decls:go_default_library", + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/stdlib:go_default_library", + "//common/types:go_default_library", + "//common/types/pb:go_default_library", + "//common/types/ref:go_default_library", + "//parser:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//types/known/emptypb:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "checker_test.go", + "cost_test.go", + "env_test.go", + "format_test.go", + ], + embed = [ + ":go_default_library", + ], + deps = [ + "//common/types:go_default_library", + "//parser:go_default_library", + "//test:go_default_library", + "//test/proto2pb:go_default_library", + "//test/proto3pb:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/checker/checker.go b/vendor/github.com/google/cel-go/checker/checker.go new file mode 100644 index 0000000000..0057c16ccb --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/checker.go @@ -0,0 +1,728 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package checker defines functions to type-checked a parsed expression +// against a set of identifier and function declarations. +package checker + +import ( + "fmt" + "reflect" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +type checker struct { + *ast.AST + ast.ExprFactory + env *Env + errors *typeErrors + mappings *mapping + freeTypeVarCounter int +} + +// Check performs type checking, giving a typed AST. +// +// The input is a parsed AST and an env which encapsulates type binding of variables, +// declarations of built-in functions, descriptions of protocol buffers, and a registry for +// errors. +// +// Returns a type-checked AST, which might not be usable if there are errors in the error +// registry. +func Check(parsed *ast.AST, source common.Source, env *Env) (*ast.AST, *common.Errors) { + errs := common.NewErrors(source) + typeMap := make(map[int64]*types.Type) + refMap := make(map[int64]*ast.ReferenceInfo) + c := checker{ + AST: ast.NewCheckedAST(parsed, typeMap, refMap), + ExprFactory: ast.NewExprFactory(), + env: env, + errors: &typeErrors{errs: errs}, + mappings: newMapping(), + freeTypeVarCounter: 0, + } + c.check(c.Expr()) + + // Walk over the final type map substituting any type parameters either by their bound value + // or by DYN. + for id, t := range c.TypeMap() { + c.SetType(id, substitute(c.mappings, t, true)) + } + return c.AST, errs +} + +func (c *checker) check(e ast.Expr) { + if e == nil { + return + } + switch e.Kind() { + case ast.LiteralKind: + literal := ref.Val(e.AsLiteral()) + switch literal.Type() { + case types.BoolType, types.BytesType, types.DoubleType, types.IntType, + types.NullType, types.StringType, types.UintType: + c.setType(e, literal.Type().(*types.Type)) + default: + c.errors.unexpectedASTType(e.ID(), c.location(e), "literal", literal.Type().TypeName()) + } + case ast.IdentKind: + c.checkIdent(e) + case ast.SelectKind: + c.checkSelect(e) + case ast.CallKind: + c.checkCall(e) + case ast.ListKind: + c.checkCreateList(e) + case ast.MapKind: + c.checkCreateMap(e) + case ast.StructKind: + c.checkCreateStruct(e) + case ast.ComprehensionKind: + c.checkComprehension(e) + default: + c.errors.unexpectedASTType(e.ID(), c.location(e), "unspecified", reflect.TypeOf(e).Name()) + } +} + +func (c *checker) checkIdent(e ast.Expr) { + identName := e.AsIdent() + // Check to see if the identifier is declared. + if ident := c.env.LookupIdent(identName); ident != nil { + c.setType(e, ident.Type()) + c.setReference(e, ast.NewIdentReference(ident.Name(), ident.Value())) + // Overwrite the identifier with its fully qualified name. + e.SetKindCase(c.NewIdent(e.ID(), ident.Name())) + return + } + + c.setType(e, types.ErrorType) + c.errors.undeclaredReference(e.ID(), c.location(e), c.env.container.Name(), identName) +} + +func (c *checker) checkSelect(e ast.Expr) { + sel := e.AsSelect() + // Before traversing down the tree, try to interpret as qualified name. + qname, found := containers.ToQualifiedName(e) + if found { + ident := c.env.LookupIdent(qname) + if ident != nil { + // We don't check for a TestOnly expression here since the `found` result is + // always going to be false for TestOnly expressions. + + // Rewrite the node to be a variable reference to the resolved fully-qualified + // variable name. + c.setType(e, ident.Type()) + c.setReference(e, ast.NewIdentReference(ident.Name(), ident.Value())) + e.SetKindCase(c.NewIdent(e.ID(), ident.Name())) + return + } + } + + resultType := c.checkSelectField(e, sel.Operand(), sel.FieldName(), false) + if sel.IsTestOnly() { + resultType = types.BoolType + } + c.setType(e, substitute(c.mappings, resultType, false)) +} + +func (c *checker) checkOptSelect(e ast.Expr) { + // Collect metadata related to the opt select call packaged by the parser. + call := e.AsCall() + if len(call.Args()) != 2 || call.IsMemberFunction() { + t := "" + if call.IsMemberFunction() { + t = " member call with" + } + c.errors.notAnOptionalFieldSelectionCall(e.ID(), c.location(e), + fmt.Sprintf( + "incorrect signature.%s argument count: %d", t, len(call.Args()))) + return + } + + operand := call.Args()[0] + field := call.Args()[1] + fieldName, isString := maybeUnwrapString(field) + if !isString { + c.errors.notAnOptionalFieldSelection(field.ID(), c.location(field), field) + return + } + + // Perform type-checking using the field selection logic. + resultType := c.checkSelectField(e, operand, fieldName, true) + c.setType(e, substitute(c.mappings, resultType, false)) + c.setReference(e, ast.NewFunctionReference("select_optional_field")) +} + +func (c *checker) checkSelectField(e, operand ast.Expr, field string, optional bool) *types.Type { + // Interpret as field selection, first traversing down the operand. + c.check(operand) + operandType := substitute(c.mappings, c.getType(operand), false) + + // If the target type is 'optional', unwrap it for the sake of this check. + targetType, isOpt := maybeUnwrapOptional(operandType) + + // Assume error type by default as most types do not support field selection. + resultType := types.ErrorType + switch targetType.Kind() { + case types.MapKind: + // Maps yield their value type as the selection result type. + resultType = targetType.Parameters()[1] + case types.StructKind: + // Objects yield their field type declaration as the selection result type, but only if + // the field is defined. + messageType := targetType + if fieldType, found := c.lookupFieldType(e.ID(), messageType.TypeName(), field); found { + resultType = fieldType + } + case types.TypeParamKind: + // Set the operand type to DYN to prevent assignment to a potentially incorrect type + // at a later point in type-checking. The isAssignable call will update the type + // substitutions for the type param under the covers. + c.isAssignable(types.DynType, targetType) + // Also, set the result type to DYN. + resultType = types.DynType + default: + // Dynamic / error values are treated as DYN type. Errors are handled this way as well + // in order to allow forward progress on the check. + if !isDynOrError(targetType) { + c.errors.typeDoesNotSupportFieldSelection(e.ID(), c.location(e), targetType) + } + resultType = types.DynType + } + + // If the target type was optional coming in, then the result must be optional going out. + if isOpt || optional { + return types.NewOptionalType(resultType) + } + return resultType +} + +func (c *checker) checkCall(e ast.Expr) { + // Note: similar logic exists within the `interpreter/planner.go`. If making changes here + // please consider the impact on planner.go and consolidate implementations or mirror code + // as appropriate. + call := e.AsCall() + fnName := call.FunctionName() + if fnName == operators.OptSelect { + c.checkOptSelect(e) + return + } + + args := call.Args() + // Traverse arguments. + for _, arg := range args { + c.check(arg) + } + + // Regular static call with simple name. + if !call.IsMemberFunction() { + // Check for the existence of the function. + fn := c.env.LookupFunction(fnName) + if fn == nil { + c.errors.undeclaredReference(e.ID(), c.location(e), c.env.container.Name(), fnName) + c.setType(e, types.ErrorType) + return + } + // Overwrite the function name with its fully qualified resolved name. + e.SetKindCase(c.NewCall(e.ID(), fn.Name(), args...)) + // Check to see whether the overload resolves. + c.resolveOverloadOrError(e, fn, nil, args) + return + } + + // If a receiver 'target' is present, it may either be a receiver function, or a namespaced + // function, but not both. Given a.b.c() either a.b.c is a function or c is a function with + // target a.b. + // + // Check whether the target is a namespaced function name. + target := call.Target() + qualifiedPrefix, maybeQualified := containers.ToQualifiedName(target) + if maybeQualified { + maybeQualifiedName := qualifiedPrefix + "." + fnName + fn := c.env.LookupFunction(maybeQualifiedName) + if fn != nil { + // The function name is namespaced and so preserving the target operand would + // be an inaccurate representation of the desired evaluation behavior. + // Overwrite with fully-qualified resolved function name sans receiver target. + e.SetKindCase(c.NewCall(e.ID(), fn.Name(), args...)) + c.resolveOverloadOrError(e, fn, nil, args) + return + } + } + + // Regular instance call. + c.check(target) + fn := c.env.LookupFunction(fnName) + // Function found, attempt overload resolution. + if fn != nil { + c.resolveOverloadOrError(e, fn, target, args) + return + } + // Function name not declared, record error. + c.setType(e, types.ErrorType) + c.errors.undeclaredReference(e.ID(), c.location(e), c.env.container.Name(), fnName) +} + +func (c *checker) resolveOverloadOrError( + e ast.Expr, fn *decls.FunctionDecl, target ast.Expr, args []ast.Expr) { + // Attempt to resolve the overload. + resolution := c.resolveOverload(e, fn, target, args) + // No such overload, error noted in the resolveOverload call, type recorded here. + if resolution == nil { + c.setType(e, types.ErrorType) + return + } + // Overload found. + c.setType(e, resolution.Type) + c.setReference(e, resolution.Reference) +} + +func (c *checker) resolveOverload( + call ast.Expr, fn *decls.FunctionDecl, target ast.Expr, args []ast.Expr) *overloadResolution { + + var argTypes []*types.Type + if target != nil { + argTypes = append(argTypes, c.getType(target)) + } + for _, arg := range args { + argTypes = append(argTypes, c.getType(arg)) + } + + var resultType *types.Type + var checkedRef *ast.ReferenceInfo + for _, overload := range fn.OverloadDecls() { + // Determine whether the overload is currently considered. + if c.env.isOverloadDisabled(overload.ID()) { + continue + } + + // Ensure the call style for the overload matches. + if (target == nil && overload.IsMemberFunction()) || + (target != nil && !overload.IsMemberFunction()) { + // not a compatible call style. + continue + } + + // Alternative type-checking behavior when the logical operators are compacted into + // variadic AST representations. + if fn.Name() == operators.LogicalAnd || fn.Name() == operators.LogicalOr { + checkedRef = ast.NewFunctionReference(overload.ID()) + for i, argType := range argTypes { + if !c.isAssignable(argType, types.BoolType) { + c.errors.typeMismatch( + args[i].ID(), + c.locationByID(args[i].ID()), + types.BoolType, + argType) + resultType = types.ErrorType + } + } + if isError(resultType) { + return nil + } + return newResolution(checkedRef, types.BoolType) + } + + overloadType := newFunctionType(overload.ResultType(), overload.ArgTypes()...) + typeParams := overload.TypeParams() + if len(typeParams) != 0 { + // Instantiate overload's type with fresh type variables. + substitutions := newMapping() + for _, typePar := range typeParams { + substitutions.add(types.NewTypeParamType(typePar), c.newTypeVar()) + } + overloadType = substitute(substitutions, overloadType, false) + } + + candidateArgTypes := overloadType.Parameters()[1:] + if c.isAssignableList(argTypes, candidateArgTypes) { + if checkedRef == nil { + checkedRef = ast.NewFunctionReference(overload.ID()) + } else { + checkedRef.AddOverload(overload.ID()) + } + + // First matching overload, determines result type. + fnResultType := substitute(c.mappings, overloadType.Parameters()[0], false) + if resultType == nil { + resultType = fnResultType + } else if !isDyn(resultType) && !fnResultType.IsExactType(resultType) { + resultType = types.DynType + } + } + } + + if resultType == nil { + for i, argType := range argTypes { + argTypes[i] = substitute(c.mappings, argType, true) + } + c.errors.noMatchingOverload(call.ID(), c.location(call), fn.Name(), argTypes, target != nil) + return nil + } + + return newResolution(checkedRef, resultType) +} + +func (c *checker) checkCreateList(e ast.Expr) { + create := e.AsList() + var elemsType *types.Type + optionalIndices := create.OptionalIndices() + optionals := make(map[int32]bool, len(optionalIndices)) + for _, optInd := range optionalIndices { + optionals[optInd] = true + } + for i, e := range create.Elements() { + c.check(e) + elemType := c.getType(e) + if optionals[int32(i)] { + var isOptional bool + elemType, isOptional = maybeUnwrapOptional(elemType) + if !isOptional && !isDyn(elemType) { + c.errors.typeMismatch(e.ID(), c.location(e), types.NewOptionalType(elemType), elemType) + } + } + elemsType = c.joinTypes(e, elemsType, elemType) + } + if elemsType == nil { + // If the list is empty, assign free type var to elem type. + elemsType = c.newTypeVar() + } + c.setType(e, types.NewListType(elemsType)) +} + +func (c *checker) checkCreateMap(e ast.Expr) { + mapVal := e.AsMap() + var mapKeyType *types.Type + var mapValueType *types.Type + for _, e := range mapVal.Entries() { + entry := e.AsMapEntry() + key := entry.Key() + c.check(key) + mapKeyType = c.joinTypes(key, mapKeyType, c.getType(key)) + + val := entry.Value() + c.check(val) + valType := c.getType(val) + if entry.IsOptional() { + var isOptional bool + valType, isOptional = maybeUnwrapOptional(valType) + if !isOptional && !isDyn(valType) { + c.errors.typeMismatch(val.ID(), c.location(val), types.NewOptionalType(valType), valType) + } + } + mapValueType = c.joinTypes(val, mapValueType, valType) + } + if mapKeyType == nil { + // If the map is empty, assign free type variables to typeKey and value type. + mapKeyType = c.newTypeVar() + mapValueType = c.newTypeVar() + } + c.setType(e, types.NewMapType(mapKeyType, mapValueType)) +} + +func (c *checker) checkCreateStruct(e ast.Expr) { + msgVal := e.AsStruct() + // Determine the type of the message. + resultType := types.ErrorType + ident := c.env.LookupIdent(msgVal.TypeName()) + if ident == nil { + c.errors.undeclaredReference( + e.ID(), c.location(e), c.env.container.Name(), msgVal.TypeName()) + c.setType(e, types.ErrorType) + return + } + // Ensure the type name is fully qualified in the AST. + typeName := ident.Name() + if msgVal.TypeName() != typeName { + e.SetKindCase(c.NewStruct(e.ID(), typeName, msgVal.Fields())) + msgVal = e.AsStruct() + } + c.setReference(e, ast.NewIdentReference(typeName, nil)) + identKind := ident.Type().Kind() + if identKind != types.ErrorKind { + if identKind != types.TypeKind { + c.errors.notAType(e.ID(), c.location(e), ident.Type().DeclaredTypeName()) + } else { + resultType = ident.Type().Parameters()[0] + // Backwards compatibility test between well-known types and message types + // In this context, the type is being instantiated by its protobuf name which + // is not ideal or recommended, but some users expect this to work. + if isWellKnownType(resultType) { + typeName = getWellKnownTypeName(resultType) + } else if resultType.Kind() == types.StructKind { + typeName = resultType.DeclaredTypeName() + } else { + c.errors.notAMessageType(e.ID(), c.location(e), resultType.DeclaredTypeName()) + resultType = types.ErrorType + } + } + } + c.setType(e, resultType) + + // Check the field initializers. + for _, f := range msgVal.Fields() { + field := f.AsStructField() + fieldName := field.Name() + value := field.Value() + c.check(value) + + fieldType := types.ErrorType + ft, found := c.lookupFieldType(f.ID(), typeName, fieldName) + if found { + fieldType = ft + } + + valType := c.getType(value) + if field.IsOptional() { + var isOptional bool + valType, isOptional = maybeUnwrapOptional(valType) + if !isOptional && !isDyn(valType) { + c.errors.typeMismatch(value.ID(), c.location(value), types.NewOptionalType(valType), valType) + } + } + if !c.isAssignable(fieldType, valType) { + c.errors.fieldTypeMismatch(f.ID(), c.locationByID(f.ID()), fieldName, fieldType, valType) + } + } +} + +func (c *checker) checkComprehension(e ast.Expr) { + comp := e.AsComprehension() + c.check(comp.IterRange()) + c.check(comp.AccuInit()) + rangeType := substitute(c.mappings, c.getType(comp.IterRange()), false) + + // Create a scope for the comprehension since it has a local accumulation variable. + // This scope will contain the accumulation variable used to compute the result. + accuType := c.getType(comp.AccuInit()) + c.env = c.env.enterScope() + c.env.AddIdents(decls.NewVariable(comp.AccuVar(), accuType)) + + var varType, var2Type *types.Type + switch rangeType.Kind() { + case types.ListKind: + // varType represents the list element type for one-variable comprehensions. + varType = rangeType.Parameters()[0] + if comp.HasIterVar2() { + // varType represents the list index (int) for two-variable comprehensions, + // and var2Type represents the list element type. + var2Type = varType + varType = types.IntType + } + case types.MapKind: + // varType represents the map entry key for all comprehension types. + varType = rangeType.Parameters()[0] + if comp.HasIterVar2() { + // var2Type represents the map entry value for two-variable comprehensions. + var2Type = rangeType.Parameters()[1] + } + case types.DynKind, types.ErrorKind, types.TypeParamKind: + // Set the range type to DYN to prevent assignment to a potentially incorrect type + // at a later point in type-checking. The isAssignable call will update the type + // substitutions for the type param under the covers. + c.isAssignable(types.DynType, rangeType) + // Set the range iteration variable to type DYN as well. + varType = types.DynType + if comp.HasIterVar2() { + var2Type = types.DynType + } + default: + c.errors.notAComprehensionRange(comp.IterRange().ID(), c.location(comp.IterRange()), rangeType) + varType = types.ErrorType + if comp.HasIterVar2() { + var2Type = types.ErrorType + } + } + + // Create a block scope for the loop. + c.env = c.env.enterScope() + c.env.AddIdents(decls.NewVariable(comp.IterVar(), varType)) + if comp.HasIterVar2() { + c.env.AddIdents(decls.NewVariable(comp.IterVar2(), var2Type)) + } + // Check the variable references in the condition and step. + c.check(comp.LoopCondition()) + c.assertType(comp.LoopCondition(), types.BoolType) + c.check(comp.LoopStep()) + c.assertType(comp.LoopStep(), accuType) + // Exit the loop's block scope before checking the result. + c.env = c.env.exitScope() + c.check(comp.Result()) + // Exit the comprehension scope. + c.env = c.env.exitScope() + c.setType(e, substitute(c.mappings, c.getType(comp.Result()), false)) +} + +// Checks compatibility of joined types, and returns the most general common type. +func (c *checker) joinTypes(e ast.Expr, previous, current *types.Type) *types.Type { + if previous == nil { + return current + } + if c.isAssignable(previous, current) { + return mostGeneral(previous, current) + } + if c.dynAggregateLiteralElementTypesEnabled() { + return types.DynType + } + c.errors.typeMismatch(e.ID(), c.location(e), previous, current) + return types.ErrorType +} + +func (c *checker) dynAggregateLiteralElementTypesEnabled() bool { + return c.env.aggLitElemType == dynElementType +} + +func (c *checker) newTypeVar() *types.Type { + id := c.freeTypeVarCounter + c.freeTypeVarCounter++ + return types.NewTypeParamType(fmt.Sprintf("_var%d", id)) +} + +func (c *checker) isAssignable(t1, t2 *types.Type) bool { + subs := isAssignable(c.mappings, t1, t2) + if subs != nil { + c.mappings = subs + return true + } + + return false +} + +func (c *checker) isAssignableList(l1, l2 []*types.Type) bool { + subs := isAssignableList(c.mappings, l1, l2) + if subs != nil { + c.mappings = subs + return true + } + + return false +} + +func maybeUnwrapString(e ast.Expr) (string, bool) { + switch e.Kind() { + case ast.LiteralKind: + literal := e.AsLiteral() + switch v := literal.(type) { + case types.String: + return string(v), true + } + } + return "", false +} + +func (c *checker) setType(e ast.Expr, t *types.Type) { + if old, found := c.TypeMap()[e.ID()]; found && !old.IsExactType(t) { + c.errors.incompatibleType(e.ID(), c.location(e), e, old, t) + return + } + c.SetType(e.ID(), t) +} + +func (c *checker) getType(e ast.Expr) *types.Type { + return c.TypeMap()[e.ID()] +} + +func (c *checker) setReference(e ast.Expr, r *ast.ReferenceInfo) { + if old, found := c.ReferenceMap()[e.ID()]; found && !old.Equals(r) { + c.errors.referenceRedefinition(e.ID(), c.location(e), e, old, r) + return + } + c.SetReference(e.ID(), r) +} + +func (c *checker) assertType(e ast.Expr, t *types.Type) { + if !c.isAssignable(t, c.getType(e)) { + c.errors.typeMismatch(e.ID(), c.location(e), t, c.getType(e)) + } +} + +type overloadResolution struct { + Type *types.Type + Reference *ast.ReferenceInfo +} + +func newResolution(r *ast.ReferenceInfo, t *types.Type) *overloadResolution { + return &overloadResolution{ + Reference: r, + Type: t, + } +} + +func (c *checker) location(e ast.Expr) common.Location { + return c.locationByID(e.ID()) +} + +func (c *checker) locationByID(id int64) common.Location { + return c.SourceInfo().GetStartLocation(id) +} + +func (c *checker) lookupFieldType(exprID int64, structType, fieldName string) (*types.Type, bool) { + if _, found := c.env.provider.FindStructType(structType); !found { + // This should not happen, anyway, report an error. + c.errors.unexpectedFailedResolution(exprID, c.locationByID(exprID), structType) + return nil, false + } + + if ft, found := c.env.provider.FindStructFieldType(structType, fieldName); found { + return ft.Type, found + } + + c.errors.undefinedField(exprID, c.locationByID(exprID), fieldName) + return nil, false +} + +func isWellKnownType(t *types.Type) bool { + switch t.Kind() { + case types.AnyKind, types.TimestampKind, types.DurationKind, types.DynKind, types.NullTypeKind: + return true + case types.BoolKind, types.BytesKind, types.DoubleKind, types.IntKind, types.StringKind, types.UintKind: + return t.IsAssignableType(types.NullType) + case types.ListKind: + return t.Parameters()[0] == types.DynType + case types.MapKind: + return t.Parameters()[0] == types.StringType && t.Parameters()[1] == types.DynType + } + return false +} + +func getWellKnownTypeName(t *types.Type) string { + if name, found := wellKnownTypes[t.Kind()]; found { + return name + } + return "" +} + +var ( + wellKnownTypes = map[types.Kind]string{ + types.AnyKind: "google.protobuf.Any", + types.BoolKind: "google.protobuf.BoolValue", + types.BytesKind: "google.protobuf.BytesValue", + types.DoubleKind: "google.protobuf.DoubleValue", + types.DurationKind: "google.protobuf.Duration", + types.DynKind: "google.protobuf.Value", + types.IntKind: "google.protobuf.Int64Value", + types.ListKind: "google.protobuf.ListValue", + types.NullTypeKind: "google.protobuf.NullValue", + types.MapKind: "google.protobuf.Struct", + types.StringKind: "google.protobuf.StringValue", + types.TimestampKind: "google.protobuf.Timestamp", + types.UintKind: "google.protobuf.UInt64Value", + } +) diff --git a/vendor/github.com/google/cel-go/checker/cost.go b/vendor/github.com/google/cel-go/checker/cost.go new file mode 100644 index 0000000000..5bc6318ed0 --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/cost.go @@ -0,0 +1,1042 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "math" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/parser" +) + +// WARNING: Any changes to cost calculations in this file require a corresponding change in interpreter/runtimecost.go + +// CostEstimator estimates the sizes of variable length input data and the costs of functions. +type CostEstimator interface { + // EstimateSize returns a SizeEstimate for the given AstNode, or nil if the estimator has no + // estimate to provide. + // + // The size is equivalent to the result of the CEL `size()` function: + // * Number of unicode characters in a string + // * Number of bytes in a sequence + // * Number of map entries or number of list items. + // + // EstimateSize is only called for AstNodes where CEL does not know the size; EstimateSize is not + // called for values defined inline in CEL where the size is already obvious to CEL. + EstimateSize(element AstNode) *SizeEstimate + + // EstimateCallCost returns the estimated cost of an invocation, or nil if the estimator has no + // estimate to provide. + EstimateCallCost(function, overloadID string, target *AstNode, args []AstNode) *CallEstimate +} + +// CallEstimate includes a CostEstimate for the call, and an optional estimate of the result object size. +// The ResultSize should only be provided if the call results in a map, list, string or bytes. +type CallEstimate struct { + CostEstimate + + ResultSize *SizeEstimate +} + +// AstNode represents an AST node for the purpose of cost estimations. +type AstNode interface { + // Path returns a field path through the provided type declarations to the type of the AstNode, or nil if the AstNode does not + // represent type directly reachable from the provided type declarations. + // The first path element is a variable. All subsequent path elements are one of: field name, '@items', '@keys', '@values'. + Path() []string + + // Type returns the deduced type of the AstNode. + Type() *types.Type + + // Expr returns the expression of the AstNode. + Expr() ast.Expr + + // ComputedSize returns a size estimate of the AstNode derived from information available in the CEL expression. + // For constants and inline list and map declarations, the exact size is returned. For concatenated list, strings + // and bytes, the size is derived from the size estimates of the operands. nil is returned if there is no + // computed size available. + ComputedSize() *SizeEstimate +} + +type astNode struct { + path []string + t *types.Type + expr ast.Expr + derivedSize *SizeEstimate +} + +func (e astNode) Path() []string { + return e.path +} + +func (e astNode) Type() *types.Type { + return e.t +} + +func (e astNode) Expr() ast.Expr { + return e.expr +} + +func (e astNode) ComputedSize() *SizeEstimate { + return e.derivedSize +} + +// SizeEstimate represents an estimated size of a variable length string, bytes, map or list. +type SizeEstimate struct { + Min, Max uint64 +} + +// UnknownSizeEstimate returns a size between 0 and max uint +func UnknownSizeEstimate() SizeEstimate { + return unknownSizeEstimate +} + +// FixedSizeEstimate returns a size estimate with a fixed min and max range. +func FixedSizeEstimate(size uint64) SizeEstimate { + return SizeEstimate{Min: size, Max: size} +} + +// Add adds to another SizeEstimate and returns the sum. +// If add would result in an uint64 overflow, the result is math.MaxUint64. +func (se SizeEstimate) Add(sizeEstimate SizeEstimate) SizeEstimate { + return SizeEstimate{ + addUint64NoOverflow(se.Min, sizeEstimate.Min), + addUint64NoOverflow(se.Max, sizeEstimate.Max), + } +} + +// Multiply multiplies by another SizeEstimate and returns the product. +// If multiply would result in an uint64 overflow, the result is math.MaxUint64. +func (se SizeEstimate) Multiply(sizeEstimate SizeEstimate) SizeEstimate { + return SizeEstimate{ + multiplyUint64NoOverflow(se.Min, sizeEstimate.Min), + multiplyUint64NoOverflow(se.Max, sizeEstimate.Max), + } +} + +// MultiplyByCostFactor multiplies a SizeEstimate by a cost factor and returns the CostEstimate with the +// nearest integer of the result, rounded up. +func (se SizeEstimate) MultiplyByCostFactor(costPerUnit float64) CostEstimate { + return CostEstimate{ + multiplyByCostFactor(se.Min, costPerUnit), + multiplyByCostFactor(se.Max, costPerUnit), + } +} + +// MultiplyByCost multiplies by the cost and returns the product. +// If multiply would result in an uint64 overflow, the result is math.MaxUint64. +func (se SizeEstimate) MultiplyByCost(cost CostEstimate) CostEstimate { + return CostEstimate{ + multiplyUint64NoOverflow(se.Min, cost.Min), + multiplyUint64NoOverflow(se.Max, cost.Max), + } +} + +// Union returns a SizeEstimate that encompasses both input the SizeEstimate. +func (se SizeEstimate) Union(size SizeEstimate) SizeEstimate { + result := se + if size.Min < result.Min { + result.Min = size.Min + } + if size.Max > result.Max { + result.Max = size.Max + } + return result +} + +// CostEstimate represents an estimated cost range and provides add and multiply operations +// that do not overflow. +type CostEstimate struct { + Min, Max uint64 +} + +// UnknownCostEstimate returns a cost with an unknown impact. +func UnknownCostEstimate() CostEstimate { + return unknownCostEstimate +} + +// FixedCostEstimate returns a cost with a fixed min and max range. +func FixedCostEstimate(cost uint64) CostEstimate { + return CostEstimate{Min: cost, Max: cost} +} + +// Add adds the costs and returns the sum. +// If add would result in an uint64 overflow for the min or max, the value is set to math.MaxUint64. +func (ce CostEstimate) Add(cost CostEstimate) CostEstimate { + return CostEstimate{ + Min: addUint64NoOverflow(ce.Min, cost.Min), + Max: addUint64NoOverflow(ce.Max, cost.Max), + } +} + +// Multiply multiplies by the cost and returns the product. +// If multiply would result in an uint64 overflow, the result is math.MaxUint64. +func (ce CostEstimate) Multiply(cost CostEstimate) CostEstimate { + return CostEstimate{ + Min: multiplyUint64NoOverflow(ce.Min, cost.Min), + Max: multiplyUint64NoOverflow(ce.Max, cost.Max), + } +} + +// MultiplyByCostFactor multiplies a CostEstimate by a cost factor and returns the CostEstimate with the +// nearest integer of the result, rounded up. +func (ce CostEstimate) MultiplyByCostFactor(costPerUnit float64) CostEstimate { + return CostEstimate{ + Min: multiplyByCostFactor(ce.Min, costPerUnit), + Max: multiplyByCostFactor(ce.Max, costPerUnit), + } +} + +// Union returns a CostEstimate that encompasses both input the CostEstimates. +func (ce CostEstimate) Union(size CostEstimate) CostEstimate { + result := ce + if size.Min < result.Min { + result.Min = size.Min + } + if size.Max > result.Max { + result.Max = size.Max + } + return result +} + +// addUint64NoOverflow adds non-negative ints. If the result is exceeds math.MaxUint64, math.MaxUint64 +// is returned. +func addUint64NoOverflow(x, y uint64) uint64 { + if y > 0 && x > math.MaxUint64-y { + return math.MaxUint64 + } + return x + y +} + +// multiplyUint64NoOverflow multiplies non-negative ints. If the result is exceeds math.MaxUint64, math.MaxUint64 +// is returned. +func multiplyUint64NoOverflow(x, y uint64) uint64 { + if y != 0 && x > math.MaxUint64/y { + return math.MaxUint64 + } + return x * y +} + +// multiplyByFactor multiplies an integer by a cost factor float and returns the nearest integer value, rounded up. +func multiplyByCostFactor(x uint64, y float64) uint64 { + xFloat := float64(x) + if xFloat > 0 && y > 0 && xFloat > math.MaxUint64/y { + return math.MaxUint64 + } + ceil := math.Ceil(xFloat * y) + if ceil >= doubleTwoTo64 { + return math.MaxUint64 + } + return uint64(ceil) +} + +// CostOption configures flags which affect cost computations. +type CostOption func(*coster) error + +// PresenceTestHasCost determines whether presence testing has a cost of one or zero. +// +// Defaults to presence test has a cost of one. +func PresenceTestHasCost(hasCost bool) CostOption { + return func(c *coster) error { + if hasCost { + c.presenceTestCost = selectAndIdentCost + return nil + } + c.presenceTestCost = FixedCostEstimate(0) + return nil + } +} + +// FunctionEstimator provides a CallEstimate given the target and arguments for a specific function, overload pair. +type FunctionEstimator func(estimator CostEstimator, target *AstNode, args []AstNode) *CallEstimate + +// OverloadCostEstimate binds a FunctionCoster to a specific function overload ID. +// +// When a OverloadCostEstimate is provided, it will override the cost calculation of the CostEstimator provided to +// the Cost() call. +func OverloadCostEstimate(overloadID string, functionCoster FunctionEstimator) CostOption { + return func(c *coster) error { + c.overloadEstimators[overloadID] = functionCoster + return nil + } +} + +// Cost estimates the cost of the parsed and type checked CEL expression. +func Cost(checked *ast.AST, estimator CostEstimator, opts ...CostOption) (CostEstimate, error) { + c := &coster{ + checkedAST: checked, + estimator: estimator, + overloadEstimators: map[string]FunctionEstimator{}, + exprPaths: map[int64][]string{}, + localVars: make(scopes), + computedSizes: map[int64]SizeEstimate{}, + computedEntrySizes: map[int64]entrySizeEstimate{}, + presenceTestCost: FixedCostEstimate(1), + } + for _, opt := range opts { + err := opt(c) + if err != nil { + return CostEstimate{}, err + } + } + return c.cost(checked.Expr()), nil +} + +type coster struct { + // exprPaths maps from Expr Id to field path. + exprPaths map[int64][]string + // localVars tracks the local and iteration variables assigned during evaluation. + localVars scopes + // computedSizes tracks the computed sizes of call results. + computedSizes map[int64]SizeEstimate + // computedEntrySizes tracks the size of list and map entries + computedEntrySizes map[int64]entrySizeEstimate + + checkedAST *ast.AST + estimator CostEstimator + overloadEstimators map[string]FunctionEstimator + // presenceTestCost will either be a zero or one based on whether has() macros count against cost computations. + presenceTestCost CostEstimate +} + +// entrySizeEstimate captures the container kind and associated key/index and value SizeEstimate values. +// +// An entrySizeEstimate only exists if both the key/index and the value have SizeEstimate values, otherwise +// a nil entrySizeEstimate should be used. +type entrySizeEstimate struct { + containerKind types.Kind + key SizeEstimate + val SizeEstimate +} + +// container returns the container kind (list or map) of the entry. +func (s *entrySizeEstimate) container() types.Kind { + if s == nil { + return types.UnknownKind + } + return s.containerKind +} + +// keySize returns the SizeEstimate for the key if one exists. +func (s *entrySizeEstimate) keySize() *SizeEstimate { + if s == nil { + return nil + } + return &s.key +} + +// valSize returns the SizeEstimate for the value if one exists. +func (s *entrySizeEstimate) valSize() *SizeEstimate { + if s == nil { + return nil + } + return &s.val +} + +func (s *entrySizeEstimate) union(other *entrySizeEstimate) *entrySizeEstimate { + if s == nil || other == nil { + return nil + } + sk := s.key.Union(other.key) + sv := s.val.Union(other.val) + return &entrySizeEstimate{ + containerKind: s.containerKind, + key: sk, + val: sv, + } +} + +// localVar captures the local variable size and entrySize estimates if they exist for variables +type localVar struct { + exprID int64 + path []string + size *SizeEstimate + entrySize *entrySizeEstimate +} + +// scopes is a stack of variable name to integer id stack to handle scopes created by cel.bind() like macros +type scopes map[string][]*localVar + +func (s scopes) push(varName string, expr ast.Expr, path []string, size *SizeEstimate, entrySize *entrySizeEstimate) { + s[varName] = append(s[varName], &localVar{ + exprID: expr.ID(), + path: path, + size: size, + entrySize: entrySize, + }) +} + +func (s scopes) pop(varName string) { + varStack := s[varName] + s[varName] = varStack[:len(varStack)-1] +} + +func (s scopes) peek(varName string) (*localVar, bool) { + varStack := s[varName] + if len(varStack) > 0 { + return varStack[len(varStack)-1], true + } + return nil, false +} + +func (c *coster) pushIterKey(varName string, rangeExpr ast.Expr) { + entrySize := c.computeEntrySize(rangeExpr) + size := entrySize.keySize() + path := c.getPath(rangeExpr) + container := entrySize.container() + if container == types.UnknownKind { + container = c.getType(rangeExpr).Kind() + } + subpath := "@keys" + if container == types.ListKind { + subpath = "@indices" + } + c.localVars.push(varName, rangeExpr, append(path, subpath), size, nil) +} + +func (c *coster) pushIterValue(varName string, rangeExpr ast.Expr) { + entrySize := c.computeEntrySize(rangeExpr) + size := entrySize.valSize() + path := c.getPath(rangeExpr) + container := entrySize.container() + if container == types.UnknownKind { + container = c.getType(rangeExpr).Kind() + } + subpath := "@values" + if container == types.ListKind { + subpath = "@items" + } + c.localVars.push(varName, rangeExpr, append(path, subpath), size, nil) +} + +func (c *coster) pushIterSingle(varName string, rangeExpr ast.Expr) { + entrySize := c.computeEntrySize(rangeExpr) + size := entrySize.keySize() + subpath := "@keys" + container := entrySize.container() + if container == types.UnknownKind { + container = c.getType(rangeExpr).Kind() + } + if container == types.ListKind { + size = entrySize.valSize() + subpath = "@items" + } + path := c.getPath(rangeExpr) + c.localVars.push(varName, rangeExpr, append(path, subpath), size, nil) +} + +func (c *coster) pushLocalVar(varName string, e ast.Expr) { + path := c.getPath(e) + // note: retrieve the entry size for the local variable based on the size of the binding expression + // since the binding expression could be a list or map, the entry size should also be propagated + entrySize := c.computeEntrySize(e) + c.localVars.push(varName, e, path, c.computeSize(e), entrySize) +} + +func (c *coster) peekLocalVar(varName string) (*localVar, bool) { + return c.localVars.peek(varName) +} + +func (c *coster) popLocalVar(varName string) { + c.localVars.pop(varName) +} + +func (c *coster) cost(e ast.Expr) CostEstimate { + if e == nil { + return CostEstimate{} + } + var cost CostEstimate + switch e.Kind() { + case ast.LiteralKind: + cost = constCost + case ast.IdentKind: + cost = c.costIdent(e) + case ast.SelectKind: + cost = c.costSelect(e) + case ast.CallKind: + cost = c.costCall(e) + case ast.ListKind: + cost = c.costCreateList(e) + case ast.MapKind: + cost = c.costCreateMap(e) + case ast.StructKind: + cost = c.costCreateStruct(e) + case ast.ComprehensionKind: + if c.isBind(e) { + cost = c.costBind(e) + } else { + cost = c.costComprehension(e) + } + default: + return CostEstimate{} + } + return cost +} + +func (c *coster) costIdent(e ast.Expr) CostEstimate { + identName := e.AsIdent() + // build and track the field path + if v, ok := c.peekLocalVar(identName); ok { + c.addPath(e, v.path) + } else { + c.addPath(e, []string{identName}) + } + return selectAndIdentCost +} + +func (c *coster) costSelect(e ast.Expr) CostEstimate { + sel := e.AsSelect() + var sum CostEstimate + if sel.IsTestOnly() { + // recurse, but do not add any cost + // this is equivalent to how evalTestOnly increments the runtime cost counter + // but does not add any additional cost for the qualifier, except here we do + // the reverse (ident adds cost) + sum = sum.Add(c.presenceTestCost) + sum = sum.Add(c.cost(sel.Operand())) + return sum + } + sum = sum.Add(c.cost(sel.Operand())) + targetType := c.getType(sel.Operand()) + switch targetType.Kind() { + case types.MapKind, types.StructKind, types.TypeParamKind: + sum = sum.Add(selectAndIdentCost) + } + + // build and track the field path + c.addPath(e, append(c.getPath(sel.Operand()), sel.FieldName())) + return sum +} + +func (c *coster) costCall(e ast.Expr) CostEstimate { + // Dyn is just a way to disable type-checking, so return the cost of 1 with the cost of the argument + if dynEstimate := c.maybeUnwrapDynCall(e); dynEstimate != nil { + return *dynEstimate + } + + // Continue estimating the cost of all other calls. + call := e.AsCall() + args := call.Args() + var sum CostEstimate + + argTypes := make([]AstNode, len(args)) + argCosts := make([]CostEstimate, len(args)) + for i, arg := range args { + argCosts[i] = c.cost(arg) + argTypes[i] = c.newAstNode(arg) + } + + overloadIDs := c.checkedAST.GetOverloadIDs(e.ID()) + if len(overloadIDs) == 0 { + return CostEstimate{} + } + var targetType *AstNode + if call.IsMemberFunction() { + sum = sum.Add(c.cost(call.Target())) + var t AstNode = c.newAstNode(call.Target()) + targetType = &t + } + // Pick a cost estimate range that covers all the overload cost estimation ranges + fnCost := CostEstimate{Min: uint64(math.MaxUint64), Max: 0} + var resultSize *SizeEstimate + for _, overload := range overloadIDs { + overloadCost := c.functionCost(e, call.FunctionName(), overload, targetType, argTypes, argCosts) + fnCost = fnCost.Union(overloadCost.CostEstimate) + if overloadCost.ResultSize != nil { + if resultSize == nil { + resultSize = overloadCost.ResultSize + } else { + size := resultSize.Union(*overloadCost.ResultSize) + resultSize = &size + } + } + // build and track the field path for index operations + switch overload { + case overloads.IndexList: + if len(args) > 0 { + // note: assigning resultSize here could be redundant with the path-based lookup later + resultSize = c.computeEntrySize(args[0]).valSize() + c.addPath(e, append(c.getPath(args[0]), "@items")) + } + case overloads.IndexMap: + if len(args) > 0 { + resultSize = c.computeEntrySize(args[0]).valSize() + c.addPath(e, append(c.getPath(args[0]), "@values")) + } + } + if resultSize == nil { + resultSize = c.computeSize(e) + } + } + c.setSize(e, resultSize) + return sum.Add(fnCost) +} + +func (c *coster) maybeUnwrapDynCall(e ast.Expr) *CostEstimate { + call := e.AsCall() + if call.FunctionName() != "dyn" { + return nil + } + arg := call.Args()[0] + argCost := c.cost(arg) + c.copySizeEstimates(e, arg) + callCost := FixedCostEstimate(1).Add(argCost) + return &callCost +} + +func (c *coster) costCreateList(e ast.Expr) CostEstimate { + create := e.AsList() + var sum CostEstimate + itemSize := SizeEstimate{Min: math.MaxUint64, Max: 0} + if create.Size() == 0 { + itemSize.Min = 0 + } + for _, e := range create.Elements() { + sum = sum.Add(c.cost(e)) + is := c.sizeOrUnknown(e) + itemSize = itemSize.Union(is) + } + c.setEntrySize(e, &entrySizeEstimate{containerKind: types.ListKind, key: FixedSizeEstimate(1), val: itemSize}) + return sum.Add(createListBaseCost) +} + +func (c *coster) costCreateMap(e ast.Expr) CostEstimate { + mapVal := e.AsMap() + var sum CostEstimate + keySize := SizeEstimate{Min: math.MaxUint64, Max: 0} + valSize := SizeEstimate{Min: math.MaxUint64, Max: 0} + if mapVal.Size() == 0 { + valSize.Min = 0 + keySize.Min = 0 + } + for _, ent := range mapVal.Entries() { + entry := ent.AsMapEntry() + sum = sum.Add(c.cost(entry.Key())) + sum = sum.Add(c.cost(entry.Value())) + // Compute the key size range + ks := c.sizeOrUnknown(entry.Key()) + keySize = keySize.Union(ks) + // Compute the value size range + vs := c.sizeOrUnknown(entry.Value()) + valSize = valSize.Union(vs) + } + c.setEntrySize(e, &entrySizeEstimate{containerKind: types.MapKind, key: keySize, val: valSize}) + return sum.Add(createMapBaseCost) +} + +func (c *coster) costCreateStruct(e ast.Expr) CostEstimate { + msgVal := e.AsStruct() + var sum CostEstimate + for _, ent := range msgVal.Fields() { + field := ent.AsStructField() + sum = sum.Add(c.cost(field.Value())) + } + return sum.Add(createMessageBaseCost) +} + +func (c *coster) costComprehension(e ast.Expr) CostEstimate { + comp := e.AsComprehension() + var sum CostEstimate + sum = sum.Add(c.cost(comp.IterRange())) + sum = sum.Add(c.cost(comp.AccuInit())) + c.pushLocalVar(comp.AccuVar(), comp.AccuInit()) + + // Track the iterRange of each IterVar and AccuVar for field path construction + if comp.HasIterVar2() { + c.pushIterKey(comp.IterVar(), comp.IterRange()) + c.pushIterValue(comp.IterVar2(), comp.IterRange()) + } else { + c.pushIterSingle(comp.IterVar(), comp.IterRange()) + } + + // Determine the cost for each element in the loop + loopCost := c.cost(comp.LoopCondition()) + stepCost := c.cost(comp.LoopStep()) + + // Clear the intermediate variable tracking. + c.popLocalVar(comp.IterVar()) + if comp.HasIterVar2() { + c.popLocalVar(comp.IterVar2()) + } + + // Determine the result cost. + sum = sum.Add(c.cost(comp.Result())) + c.localVars.pop(comp.AccuVar()) + + // Estimate the cost of the loop. + rangeCnt := c.sizeOrUnknown(comp.IterRange()) + rangeCost := rangeCnt.MultiplyByCost(stepCost.Add(loopCost)) + sum = sum.Add(rangeCost) + + switch k := comp.AccuInit().Kind(); k { + case ast.LiteralKind: + c.setSize(e, c.computeSize(comp.AccuInit())) + case ast.ListKind, ast.MapKind: + c.setSize(e, &rangeCnt) + // For a step which produces a container value, it will have an entry size associated + // with its expression id. + if stepEntrySize := c.computeEntrySize(comp.LoopStep()); stepEntrySize != nil { + c.setEntrySize(e, stepEntrySize) + break + } + } + return sum +} + +func (c *coster) isBind(e ast.Expr) bool { + comp := e.AsComprehension() + iterRange := comp.IterRange() + loopCond := comp.LoopCondition() + return iterRange.Kind() == ast.ListKind && iterRange.AsList().Size() == 0 && + loopCond.Kind() == ast.LiteralKind && loopCond.AsLiteral() == types.False && + comp.AccuVar() != parser.AccumulatorName +} + +func (c *coster) costBind(e ast.Expr) CostEstimate { + comp := e.AsComprehension() + var sum CostEstimate + // Binds are lazily initialized, so we retain the cost of an empty iteration range. + sum = sum.Add(c.cost(comp.IterRange())) + sum = sum.Add(c.cost(comp.AccuInit())) + + c.pushLocalVar(comp.AccuVar(), comp.AccuInit()) + sum = sum.Add(c.cost(comp.Result())) + c.popLocalVar(comp.AccuVar()) + + // Associate the bind output size with the result size. + c.copySizeEstimates(e, comp.Result()) + return sum +} + +func (c *coster) functionCost(e ast.Expr, function, overloadID string, target *AstNode, args []AstNode, argCosts []CostEstimate) CallEstimate { + argCostSum := func() CostEstimate { + var sum CostEstimate + for _, a := range argCosts { + sum = sum.Add(a) + } + return sum + } + if len(c.overloadEstimators) != 0 { + if estimator, found := c.overloadEstimators[overloadID]; found { + if est := estimator(c.estimator, target, args); est != nil { + callEst := *est + return CallEstimate{CostEstimate: callEst.Add(argCostSum()), ResultSize: est.ResultSize} + } + } + } + if est := c.estimator.EstimateCallCost(function, overloadID, target, args); est != nil { + callEst := *est + return CallEstimate{CostEstimate: callEst.Add(argCostSum()), ResultSize: est.ResultSize} + } + switch overloadID { + // O(n) functions + case overloads.ExtFormatString: + if target != nil { + // ResultSize not calculated because we can't bound the max size. + return CallEstimate{ + CostEstimate: c.sizeOrUnknown(*target).MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum())} + } + case overloads.StringToBytes: + if len(args) == 1 { + sz := c.sizeOrUnknown(args[0]) + // ResultSize max is when each char converts to 4 bytes. + return CallEstimate{ + CostEstimate: sz.MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum()), + ResultSize: &SizeEstimate{Min: sz.Min, Max: sz.Max * 4}} + } + case overloads.BytesToString: + if len(args) == 1 { + sz := c.sizeOrUnknown(args[0]) + // ResultSize min is when 4 bytes convert to 1 char. + return CallEstimate{ + CostEstimate: sz.MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum()), + ResultSize: &SizeEstimate{Min: sz.Min / 4, Max: sz.Max}} + } + case overloads.ExtQuoteString: + if len(args) == 1 { + sz := c.sizeOrUnknown(args[0]) + // ResultSize max is when each char is escaped. 2 quote chars always added. + return CallEstimate{ + CostEstimate: sz.MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum()), + ResultSize: &SizeEstimate{Min: sz.Min + 2, Max: sz.Max*2 + 2}} + } + case overloads.StartsWithString, overloads.EndsWithString: + if len(args) == 1 { + return CallEstimate{CostEstimate: c.sizeOrUnknown(args[0]).MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum())} + } + case overloads.InList: + // If a list is composed entirely of constant values this is O(1), but we don't account for that here. + // We just assume all list containment checks are O(n). + if len(args) == 2 { + return CallEstimate{CostEstimate: c.sizeOrUnknown(args[1]).MultiplyByCostFactor(1).Add(argCostSum())} + } + // O(nm) functions + case overloads.MatchesString: + // https://swtch.com/~rsc/regexp/regexp1.html applies to RE2 implementation supported by CEL + if target != nil && len(args) == 1 { + // Add one to string length for purposes of cost calculation to prevent product of string and regex to be 0 + // in case where string is empty but regex is still expensive. + strCost := c.sizeOrUnknown(*target).Add(SizeEstimate{Min: 1, Max: 1}).MultiplyByCostFactor(common.StringTraversalCostFactor) + // We don't know how many expressions are in the regex, just the string length (a huge + // improvement here would be to somehow get a count the number of expressions in the regex or + // how many states are in the regex state machine and use that to measure regex cost). + // For now, we're making a guess that each expression in a regex is typically at least 4 chars + // in length. + regexCost := c.sizeOrUnknown(args[0]).MultiplyByCostFactor(common.RegexStringLengthCostFactor) + return CallEstimate{CostEstimate: strCost.Multiply(regexCost).Add(argCostSum())} + } + case overloads.ContainsString: + if target != nil && len(args) == 1 { + strCost := c.sizeOrUnknown(*target).MultiplyByCostFactor(common.StringTraversalCostFactor) + substrCost := c.sizeOrUnknown(args[0]).MultiplyByCostFactor(common.StringTraversalCostFactor) + return CallEstimate{CostEstimate: strCost.Multiply(substrCost).Add(argCostSum())} + } + case overloads.LogicalOr, overloads.LogicalAnd: + lhs := argCosts[0] + rhs := argCosts[1] + // min cost is min of LHS for short circuited && or || + argCost := CostEstimate{Min: lhs.Min, Max: lhs.Add(rhs).Max} + return CallEstimate{CostEstimate: argCost} + case overloads.Conditional: + size := c.sizeOrUnknown(args[1]).Union(c.sizeOrUnknown(args[2])) + resultEntrySize := c.computeEntrySize(args[1].Expr()).union(c.computeEntrySize(args[2].Expr())) + c.setEntrySize(e, resultEntrySize) + conditionalCost := argCosts[0] + ifTrueCost := argCosts[1] + ifFalseCost := argCosts[2] + argCost := conditionalCost.Add(ifTrueCost.Union(ifFalseCost)) + return CallEstimate{CostEstimate: argCost, ResultSize: &size} + case overloads.AddString, overloads.AddBytes, overloads.AddList: + if len(args) == 2 { + lhsSize := c.sizeOrUnknown(args[0]) + rhsSize := c.sizeOrUnknown(args[1]) + resultSize := lhsSize.Add(rhsSize) + rhsEntrySize := c.computeEntrySize(args[0].Expr()) + lhsEntrySize := c.computeEntrySize(args[1].Expr()) + resultEntrySize := rhsEntrySize.union(lhsEntrySize) + if resultEntrySize != nil { + c.setEntrySize(e, resultEntrySize) + } + switch overloadID { + case overloads.AddList: + // list concatenation is O(1), but we handle it here to track size + return CallEstimate{CostEstimate: FixedCostEstimate(1).Add(argCostSum()), ResultSize: &resultSize} + default: + return CallEstimate{CostEstimate: resultSize.MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum()), ResultSize: &resultSize} + } + } + case overloads.LessString, overloads.GreaterString, overloads.LessEqualsString, overloads.GreaterEqualsString, + overloads.LessBytes, overloads.GreaterBytes, overloads.LessEqualsBytes, overloads.GreaterEqualsBytes, + overloads.Equals, overloads.NotEquals: + lhsCost := c.sizeOrUnknown(args[0]) + rhsCost := c.sizeOrUnknown(args[1]) + min := uint64(0) + smallestMax := lhsCost.Max + if rhsCost.Max < smallestMax { + smallestMax = rhsCost.Max + } + if smallestMax > 0 { + min = 1 + } + // equality of 2 scalar values results in a cost of 1 + return CallEstimate{ + CostEstimate: CostEstimate{Min: min, Max: smallestMax}.MultiplyByCostFactor(common.StringTraversalCostFactor).Add(argCostSum()), + } + } + // O(1) functions + // See CostTracker.costCall for more details about O(1) cost calculations + + // Benchmarks suggest that most of the other operations take +/- 50% of a base cost unit + // which on an Intel xeon 2.20GHz CPU is 50ns. + return CallEstimate{CostEstimate: FixedCostEstimate(1).Add(argCostSum())} +} + +func (c *coster) getType(e ast.Expr) *types.Type { + return c.checkedAST.GetType(e.ID()) +} + +func (c *coster) getPath(e ast.Expr) []string { + if e.Kind() == ast.IdentKind { + if v, found := c.peekLocalVar(e.AsIdent()); found { + return v.path[:] + } + } + return c.exprPaths[e.ID()][:] +} + +func (c *coster) addPath(e ast.Expr, path []string) { + c.exprPaths[e.ID()] = path +} + +func isAccumulatorVar(name string) bool { + return name == parser.AccumulatorName || name == parser.HiddenAccumulatorName +} + +func (c *coster) newAstNode(e ast.Expr) *astNode { + path := c.getPath(e) + if len(path) > 0 && isAccumulatorVar(path[0]) { + // only provide paths to root vars; omit accumulator vars + path = nil + } + return &astNode{ + path: path, + t: c.getType(e), + expr: e, + derivedSize: c.computeSize(e)} +} + +func (c *coster) setSize(e ast.Expr, size *SizeEstimate) { + if size == nil { + return + } + // Store the computed size with the expression + c.computedSizes[e.ID()] = *size +} + +func (c *coster) sizeOrUnknown(node any) SizeEstimate { + switch v := node.(type) { + case ast.Expr: + if sz := c.computeSize(v); sz != nil { + return *sz + } + case AstNode: + if sz := v.ComputedSize(); sz != nil { + return *sz + } + } + return UnknownSizeEstimate() +} + +func (c *coster) copySizeEstimates(dst, src ast.Expr) { + c.setSize(dst, c.computeSize(src)) + c.setEntrySize(dst, c.computeEntrySize(src)) +} + +func (c *coster) computeSize(e ast.Expr) *SizeEstimate { + if size, ok := c.computedSizes[e.ID()]; ok { + return &size + } + if size := computeExprSize(e); size != nil { + return size + } + // Ensure size estimates are computed first as users may choose to override the costs that + // CEL would otherwise ascribe to the type. + node := astNode{expr: e, path: c.getPath(e), t: c.getType(e)} + if size := c.estimator.EstimateSize(node); size != nil { + // storing the computed size should reduce calls to EstimateSize() + c.computedSizes[e.ID()] = *size + return size + } + if size := computeTypeSize(c.getType(e)); size != nil { + return size + } + if e.Kind() == ast.IdentKind { + varName := e.AsIdent() + if v, ok := c.peekLocalVar(varName); ok && v.size != nil { + return v.size + } + } + return nil +} + +func (c *coster) setEntrySize(e ast.Expr, size *entrySizeEstimate) { + if size == nil { + return + } + c.computedEntrySizes[e.ID()] = *size +} + +func (c *coster) computeEntrySize(e ast.Expr) *entrySizeEstimate { + if sz, found := c.computedEntrySizes[e.ID()]; found { + return &sz + } + if e.Kind() == ast.IdentKind { + varName := e.AsIdent() + if v, ok := c.peekLocalVar(varName); ok && v.entrySize != nil { + return v.entrySize + } + } + return nil +} + +func computeExprSize(expr ast.Expr) *SizeEstimate { + var v uint64 + switch expr.Kind() { + case ast.LiteralKind: + switch ck := expr.AsLiteral().(type) { + case types.String: + // converting to runes here is an O(n) operation, but + // this is consistent with how size is computed at runtime, + // and how the language definition defines string size + v = uint64(len([]rune(ck))) + case types.Bytes: + v = uint64(len(ck)) + case types.Bool, types.Double, types.Duration, + types.Int, types.Timestamp, types.Uint, + types.Null: + v = uint64(1) + default: + return nil + } + case ast.ListKind: + v = uint64(expr.AsList().Size()) + case ast.MapKind: + v = uint64(expr.AsMap().Size()) + default: + return nil + } + cost := FixedSizeEstimate(v) + return &cost +} + +func computeTypeSize(t *types.Type) *SizeEstimate { + if isScalar(t) { + cost := FixedSizeEstimate(1) + return &cost + } + return nil +} + +// isScalar returns true if the given type is known to be of a constant size at +// compile time. isScalar will return false for strings (they are variable-width) +// in addition to protobuf.Any and protobuf.Value (their size is not knowable at compile time). +func isScalar(t *types.Type) bool { + switch t.Kind() { + case types.BoolKind, types.DoubleKind, types.DurationKind, types.IntKind, types.TimestampKind, types.UintKind: + return true + case types.OpaqueKind: + if t.TypeName() == "optional_type" { + return isScalar(t.Parameters()[0]) + } + } + return false +} + +var ( + doubleTwoTo64 = math.Ldexp(1.0, 64) + + unknownSizeEstimate = SizeEstimate{Min: 0, Max: math.MaxUint64} + unknownCostEstimate = unknownSizeEstimate.MultiplyByCostFactor(1) + + selectAndIdentCost = FixedCostEstimate(common.SelectAndIdentCost) + constCost = FixedCostEstimate(common.ConstCost) + + createListBaseCost = FixedCostEstimate(common.ListCreateBaseCost) + createMapBaseCost = FixedCostEstimate(common.MapCreateBaseCost) + createMessageBaseCost = FixedCostEstimate(common.StructCreateBaseCost) +) diff --git a/vendor/github.com/google/cel-go/checker/decls/BUILD.bazel b/vendor/github.com/google/cel-go/checker/decls/BUILD.bazel new file mode 100644 index 0000000000..a6b0be292c --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/decls/BUILD.bazel @@ -0,0 +1,19 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "decls.go", + ], + importpath = "github.com/google/cel-go/checker/decls", + deps = [ + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//types/known/emptypb:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/checker/decls/decls.go b/vendor/github.com/google/cel-go/checker/decls/decls.go new file mode 100644 index 0000000000..e013d2c2b6 --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/decls/decls.go @@ -0,0 +1,254 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package decls provides helpers for creating variable and function declarations. +package decls + +import ( + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + emptypb "google.golang.org/protobuf/types/known/emptypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +var ( + // Error type used to communicate issues during type-checking. + Error = &exprpb.Type{ + TypeKind: &exprpb.Type_Error{ + Error: &emptypb.Empty{}}} + + // Dyn is a top-type used to represent any value. + Dyn = &exprpb.Type{ + TypeKind: &exprpb.Type_Dyn{ + Dyn: &emptypb.Empty{}}} +) + +// Commonly used types. +var ( + Bool = NewPrimitiveType(exprpb.Type_BOOL) + Bytes = NewPrimitiveType(exprpb.Type_BYTES) + Double = NewPrimitiveType(exprpb.Type_DOUBLE) + Int = NewPrimitiveType(exprpb.Type_INT64) + Null = &exprpb.Type{ + TypeKind: &exprpb.Type_Null{ + Null: structpb.NullValue_NULL_VALUE}} + String = NewPrimitiveType(exprpb.Type_STRING) + Uint = NewPrimitiveType(exprpb.Type_UINT64) +) + +// Well-known types. +// TODO: Replace with an abstract type registry. +var ( + Any = NewWellKnownType(exprpb.Type_ANY) + Duration = NewWellKnownType(exprpb.Type_DURATION) + Timestamp = NewWellKnownType(exprpb.Type_TIMESTAMP) +) + +// NewAbstractType creates an abstract type declaration which references a proto +// message name and may also include type parameters. +func NewAbstractType(name string, paramTypes ...*exprpb.Type) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_AbstractType_{ + AbstractType: &exprpb.Type_AbstractType{ + Name: name, + ParameterTypes: paramTypes}}} +} + +// NewOptionalType constructs an abstract type indicating that the parameterized type +// may be contained within the object. +func NewOptionalType(paramType *exprpb.Type) *exprpb.Type { + return NewAbstractType("optional_type", paramType) +} + +// NewFunctionType creates a function invocation contract, typically only used +// by type-checking steps after overload resolution. +func NewFunctionType(resultType *exprpb.Type, + argTypes ...*exprpb.Type) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_Function{ + Function: &exprpb.Type_FunctionType{ + ResultType: resultType, + ArgTypes: argTypes}}} +} + +// NewFunction creates a named function declaration with one or more overloads. +func NewFunction(name string, + overloads ...*exprpb.Decl_FunctionDecl_Overload) *exprpb.Decl { + return &exprpb.Decl{ + Name: name, + DeclKind: &exprpb.Decl_Function{ + Function: &exprpb.Decl_FunctionDecl{ + Overloads: overloads}}} +} + +// NewFunctionWithDoc creates a named function declaration with a description and one or more overloads. +func NewFunctionWithDoc(name, doc string, + overloads ...*exprpb.Decl_FunctionDecl_Overload) *exprpb.Decl { + return &exprpb.Decl{ + Name: name, + DeclKind: &exprpb.Decl_Function{ + Function: &exprpb.Decl_FunctionDecl{ + // Doc: desc, + Overloads: overloads}}} +} + +// NewIdent creates a named identifier declaration with an optional literal +// value. +// +// Literal values are typically only associated with enum identifiers. +// +// Deprecated: Use NewVar or NewConst instead. +func NewIdent(name string, t *exprpb.Type, v *exprpb.Constant) *exprpb.Decl { + return newIdent(name, t, v, "") +} + +func newIdent(name string, t *exprpb.Type, v *exprpb.Constant, desc string) *exprpb.Decl { + return &exprpb.Decl{ + Name: name, + DeclKind: &exprpb.Decl_Ident{ + Ident: &exprpb.Decl_IdentDecl{ + Type: t, + Value: v, + Doc: desc}}} +} + +// NewConst creates a constant identifier with a CEL constant literal value. +func NewConst(name string, t *exprpb.Type, v *exprpb.Constant) *exprpb.Decl { + return newIdent(name, t, v, "") +} + +// NewVar creates a variable identifier. +func NewVar(name string, t *exprpb.Type) *exprpb.Decl { + return newIdent(name, t, nil, "") +} + +// NewVarWithDoc creates a variable identifier with a type and a description string. +func NewVarWithDoc(name string, t *exprpb.Type, desc string) *exprpb.Decl { + return newIdent(name, t, nil, desc) +} + +// NewInstanceOverload creates a instance function overload contract. +// First element of argTypes is instance. +func NewInstanceOverload(id string, argTypes []*exprpb.Type, resultType *exprpb.Type) *exprpb.Decl_FunctionDecl_Overload { + return &exprpb.Decl_FunctionDecl_Overload{ + OverloadId: id, + ResultType: resultType, + Params: argTypes, + IsInstanceFunction: true} +} + +// NewListType generates a new list with elements of a certain type. +func NewListType(elem *exprpb.Type) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_ListType_{ + ListType: &exprpb.Type_ListType{ + ElemType: elem}}} +} + +// NewMapType generates a new map with typed keys and values. +func NewMapType(key *exprpb.Type, value *exprpb.Type) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_MapType_{ + MapType: &exprpb.Type_MapType{ + KeyType: key, + ValueType: value}}} +} + +// NewObjectType creates an object type for a qualified type name. +func NewObjectType(typeName string) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_MessageType{ + MessageType: typeName}} +} + +// NewOverload creates a function overload declaration which contains a unique +// overload id as well as the expected argument and result types. Overloads +// must be aggregated within a Function declaration. +func NewOverload(id string, argTypes []*exprpb.Type, resultType *exprpb.Type) *exprpb.Decl_FunctionDecl_Overload { + return &exprpb.Decl_FunctionDecl_Overload{ + OverloadId: id, + ResultType: resultType, + Params: argTypes, + IsInstanceFunction: false} +} + +// NewParameterizedInstanceOverload creates a parametric function instance overload type. +func NewParameterizedInstanceOverload(id string, + argTypes []*exprpb.Type, + resultType *exprpb.Type, + typeParams []string) *exprpb.Decl_FunctionDecl_Overload { + return &exprpb.Decl_FunctionDecl_Overload{ + OverloadId: id, + ResultType: resultType, + Params: argTypes, + TypeParams: typeParams, + IsInstanceFunction: true} +} + +// NewParameterizedOverload creates a parametric function overload type. +func NewParameterizedOverload(id string, + argTypes []*exprpb.Type, + resultType *exprpb.Type, + typeParams []string) *exprpb.Decl_FunctionDecl_Overload { + return &exprpb.Decl_FunctionDecl_Overload{ + OverloadId: id, + ResultType: resultType, + Params: argTypes, + TypeParams: typeParams, + IsInstanceFunction: false} +} + +// NewPrimitiveType creates a type for a primitive value. See the var declarations +// for Int, Uint, etc. +func NewPrimitiveType(primitive exprpb.Type_PrimitiveType) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_Primitive{ + Primitive: primitive}} +} + +// NewTypeType creates a new type designating a type. +func NewTypeType(nested *exprpb.Type) *exprpb.Type { + if nested == nil { + // must set the nested field for a valid oneof option + nested = &exprpb.Type{} + } + return &exprpb.Type{ + TypeKind: &exprpb.Type_Type{ + Type: nested}} +} + +// NewTypeParamType creates a type corresponding to a named, contextual parameter. +func NewTypeParamType(name string) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_TypeParam{ + TypeParam: name}} +} + +// NewWellKnownType creates a type corresponding to a protobuf well-known type +// value. +func NewWellKnownType(wellKnown exprpb.Type_WellKnownType) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_WellKnown{ + WellKnown: wellKnown}} +} + +// NewWrapperType creates a wrapped primitive type instance. Wrapped types +// are roughly equivalent to a nullable, or optionally valued type. +func NewWrapperType(wrapped *exprpb.Type) *exprpb.Type { + primitive := wrapped.GetPrimitive() + if primitive == exprpb.Type_PRIMITIVE_TYPE_UNSPECIFIED { + // TODO: return an error + panic("Wrapped type must be a primitive") + } + return &exprpb.Type{TypeKind: &exprpb.Type_Wrapper{Wrapper: primitive}} +} diff --git a/vendor/github.com/google/cel-go/checker/env.go b/vendor/github.com/google/cel-go/checker/env.go new file mode 100644 index 0000000000..d5ac05014e --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/env.go @@ -0,0 +1,284 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "fmt" + "strings" + + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/parser" +) + +type aggregateLiteralElementType int + +const ( + dynElementType aggregateLiteralElementType = iota + homogenousElementType aggregateLiteralElementType = 1 << iota +) + +var ( + crossTypeNumericComparisonOverloads = map[string]struct{}{ + // double <-> int | uint + overloads.LessDoubleInt64: {}, + overloads.LessDoubleUint64: {}, + overloads.LessEqualsDoubleInt64: {}, + overloads.LessEqualsDoubleUint64: {}, + overloads.GreaterDoubleInt64: {}, + overloads.GreaterDoubleUint64: {}, + overloads.GreaterEqualsDoubleInt64: {}, + overloads.GreaterEqualsDoubleUint64: {}, + // int <-> double | uint + overloads.LessInt64Double: {}, + overloads.LessInt64Uint64: {}, + overloads.LessEqualsInt64Double: {}, + overloads.LessEqualsInt64Uint64: {}, + overloads.GreaterInt64Double: {}, + overloads.GreaterInt64Uint64: {}, + overloads.GreaterEqualsInt64Double: {}, + overloads.GreaterEqualsInt64Uint64: {}, + // uint <-> double | int + overloads.LessUint64Double: {}, + overloads.LessUint64Int64: {}, + overloads.LessEqualsUint64Double: {}, + overloads.LessEqualsUint64Int64: {}, + overloads.GreaterUint64Double: {}, + overloads.GreaterUint64Int64: {}, + overloads.GreaterEqualsUint64Double: {}, + overloads.GreaterEqualsUint64Int64: {}, + } +) + +// Env is the environment for type checking. +// +// The Env is comprised of a container, type provider, declarations, and other related objects +// which can be used to assist with type-checking. +type Env struct { + container *containers.Container + provider types.Provider + declarations *Scopes + aggLitElemType aggregateLiteralElementType + filteredOverloadIDs map[string]struct{} +} + +// NewEnv returns a new *Env with the given parameters. +func NewEnv(container *containers.Container, provider types.Provider, opts ...Option) (*Env, error) { + declarations := newScopes() + declarations.Push() + + envOptions := &options{} + for _, opt := range opts { + if err := opt(envOptions); err != nil { + return nil, err + } + } + aggLitElemType := dynElementType + if envOptions.homogeneousAggregateLiterals { + aggLitElemType = homogenousElementType + } + filteredOverloadIDs := crossTypeNumericComparisonOverloads + if envOptions.crossTypeNumericComparisons { + filteredOverloadIDs = make(map[string]struct{}) + } + if envOptions.validatedDeclarations != nil { + declarations = envOptions.validatedDeclarations.Copy() + } + return &Env{ + container: container, + provider: provider, + declarations: declarations, + aggLitElemType: aggLitElemType, + filteredOverloadIDs: filteredOverloadIDs, + }, nil +} + +// AddIdents configures the checker with a list of variable declarations. +// +// If there are overlapping declarations, the method will error. +func (e *Env) AddIdents(declarations ...*decls.VariableDecl) error { + errMsgs := make([]errorMsg, 0) + for _, d := range declarations { + errMsgs = append(errMsgs, e.addIdent(d)) + } + return formatError(errMsgs) +} + +// AddFunctions configures the checker with a list of function declarations. +// +// If there are overlapping declarations, the method will error. +func (e *Env) AddFunctions(declarations ...*decls.FunctionDecl) error { + errMsgs := make([]errorMsg, 0) + for _, d := range declarations { + errMsgs = append(errMsgs, e.setFunction(d)...) + } + return formatError(errMsgs) +} + +// LookupIdent returns a Decl proto for typeName as an identifier in the Env. +// Returns nil if no such identifier is found in the Env. +func (e *Env) LookupIdent(name string) *decls.VariableDecl { + for _, candidate := range e.container.ResolveCandidateNames(name) { + if ident := e.declarations.FindIdent(candidate); ident != nil { + return ident + } + + // Next try to import the name as a reference to a message type. If found, + // the declaration is added to the outest (global) scope of the + // environment, so next time we can access it faster. + if t, found := e.provider.FindStructType(candidate); found { + decl := decls.NewVariable(candidate, t) + e.declarations.AddIdent(decl) + return decl + } + + if i, found := e.provider.FindIdent(candidate); found { + if t, ok := i.(*types.Type); ok { + decl := decls.NewVariable(candidate, types.NewTypeTypeWithParam(t)) + e.declarations.AddIdent(decl) + return decl + } + } + + // Next try to import this as an enum value by splitting the name in a type prefix and + // the enum inside. + if enumValue := e.provider.EnumValue(candidate); enumValue.Type() != types.ErrType { + decl := decls.NewConstant(candidate, types.IntType, enumValue) + e.declarations.AddIdent(decl) + return decl + } + } + return nil +} + +// LookupFunction returns a Decl proto for typeName as a function in env. +// Returns nil if no such function is found in env. +func (e *Env) LookupFunction(name string) *decls.FunctionDecl { + for _, candidate := range e.container.ResolveCandidateNames(name) { + if fn := e.declarations.FindFunction(candidate); fn != nil { + return fn + } + } + return nil +} + +// setFunction adds the function Decl to the Env. +// Adds a function decl if one doesn't already exist, then adds all overloads from the Decl. +// If overload overlaps with an existing overload, adds to the errors in the Env instead. +func (e *Env) setFunction(fn *decls.FunctionDecl) []errorMsg { + errMsgs := make([]errorMsg, 0) + current := e.declarations.FindFunction(fn.Name()) + if current != nil { + var err error + current, err = current.Merge(fn) + if err != nil { + return append(errMsgs, errorMsg(err.Error())) + } + } else { + current = fn + } + for _, overload := range current.OverloadDecls() { + for _, macro := range parser.AllMacros { + if macro.Function() == current.Name() && + macro.IsReceiverStyle() == overload.IsMemberFunction() && + macro.ArgCount() == len(overload.ArgTypes()) { + errMsgs = append(errMsgs, overlappingMacroError(current.Name(), macro.ArgCount())) + } + } + if len(errMsgs) > 0 { + return errMsgs + } + } + e.declarations.SetFunction(current) + return errMsgs +} + +// addIdent adds the Decl to the declarations in the Env. +// Returns a non-empty errorMsg if the identifier is already declared in the scope. +func (e *Env) addIdent(decl *decls.VariableDecl) errorMsg { + current := e.declarations.FindIdentInScope(decl.Name()) + if current != nil { + if current.DeclarationIsEquivalent(decl) { + return "" + } + return overlappingIdentifierError(decl.Name()) + } + e.declarations.AddIdent(decl) + return "" +} + +// isOverloadDisabled returns whether the overloadID is disabled in the current environment. +func (e *Env) isOverloadDisabled(overloadID string) bool { + _, found := e.filteredOverloadIDs[overloadID] + return found +} + +// validatedDeclarations returns a reference to the validated variable and function declaration scope stack. +// must be copied before use. +func (e *Env) validatedDeclarations() *Scopes { + return e.declarations +} + +// enterScope creates a new Env instance with a new innermost declaration scope. +func (e *Env) enterScope() *Env { + childDecls := e.declarations.Push() + return &Env{ + declarations: childDecls, + container: e.container, + provider: e.provider, + aggLitElemType: e.aggLitElemType, + } +} + +// exitScope creates a new Env instance with the nearest outer declaration scope. +func (e *Env) exitScope() *Env { + parentDecls := e.declarations.Pop() + return &Env{ + declarations: parentDecls, + container: e.container, + provider: e.provider, + aggLitElemType: e.aggLitElemType, + } +} + +// errorMsg is a type alias meant to represent error-based return values which +// may be accumulated into an error at a later point in execution. +type errorMsg string + +func overlappingIdentifierError(name string) errorMsg { + return errorMsg(fmt.Sprintf("overlapping identifier for name '%s'", name)) +} + +func overlappingMacroError(name string, argCount int) errorMsg { + return errorMsg(fmt.Sprintf( + "overlapping macro for name '%s' with %d args", name, argCount)) +} + +func formatError(errMsgs []errorMsg) error { + errStrs := make([]string, 0) + if len(errMsgs) > 0 { + for i := 0; i < len(errMsgs); i++ { + if errMsgs[i] != "" { + errStrs = append(errStrs, string(errMsgs[i])) + } + } + } + if len(errStrs) > 0 { + return fmt.Errorf("%s", strings.Join(errStrs, "\n")) + } + return nil +} diff --git a/vendor/github.com/google/cel-go/checker/errors.go b/vendor/github.com/google/cel-go/checker/errors.go new file mode 100644 index 0000000000..3535440baa --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/errors.go @@ -0,0 +1,92 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/types" +) + +// typeErrors is a specialization of Errors. +type typeErrors struct { + errs *common.Errors +} + +func (e *typeErrors) fieldTypeMismatch(id int64, l common.Location, name string, field, value *types.Type) { + e.errs.ReportErrorAtID(id, l, "expected type of field '%s' is '%s' but provided type is '%s'", + name, FormatCELType(field), FormatCELType(value)) +} + +func (e *typeErrors) incompatibleType(id int64, l common.Location, ex ast.Expr, prev, next *types.Type) { + e.errs.ReportErrorAtID(id, l, + "incompatible type already exists for expression: %v(%d) old:%v, new:%v", ex, ex.ID(), prev, next) +} + +func (e *typeErrors) noMatchingOverload(id int64, l common.Location, name string, args []*types.Type, isInstance bool) { + signature := formatFunctionDeclType(nil, args, isInstance) + e.errs.ReportErrorAtID(id, l, "found no matching overload for '%s' applied to '%s'", name, signature) +} + +func (e *typeErrors) notAComprehensionRange(id int64, l common.Location, t *types.Type) { + e.errs.ReportErrorAtID(id, l, "expression of type '%s' cannot be range of a comprehension (must be list, map, or dynamic)", + FormatCELType(t)) +} + +func (e *typeErrors) notAnOptionalFieldSelectionCall(id int64, l common.Location, err string) { + e.errs.ReportErrorAtID(id, l, "unsupported optional field selection: %s", err) +} + +func (e *typeErrors) notAnOptionalFieldSelection(id int64, l common.Location, field ast.Expr) { + e.errs.ReportErrorAtID(id, l, "unsupported optional field selection: %v", field) +} + +func (e *typeErrors) notAType(id int64, l common.Location, typeName string) { + e.errs.ReportErrorAtID(id, l, "'%s' is not a type", typeName) +} + +func (e *typeErrors) notAMessageType(id int64, l common.Location, typeName string) { + e.errs.ReportErrorAtID(id, l, "'%s' is not a message type", typeName) +} + +func (e *typeErrors) referenceRedefinition(id int64, l common.Location, ex ast.Expr, prev, next *ast.ReferenceInfo) { + e.errs.ReportErrorAtID(id, l, + "reference already exists for expression: %v(%d) old:%v, new:%v", ex, ex.ID(), prev, next) +} + +func (e *typeErrors) typeDoesNotSupportFieldSelection(id int64, l common.Location, t *types.Type) { + e.errs.ReportErrorAtID(id, l, "type '%s' does not support field selection", FormatCELType(t)) +} + +func (e *typeErrors) typeMismatch(id int64, l common.Location, expected, actual *types.Type) { + e.errs.ReportErrorAtID(id, l, "expected type '%s' but found '%s'", + FormatCELType(expected), FormatCELType(actual)) +} + +func (e *typeErrors) undefinedField(id int64, l common.Location, field string) { + e.errs.ReportErrorAtID(id, l, "undefined field '%s'", field) +} + +func (e *typeErrors) undeclaredReference(id int64, l common.Location, container string, name string) { + e.errs.ReportErrorAtID(id, l, "undeclared reference to '%s' (in container '%s')", name, container) +} + +func (e *typeErrors) unexpectedFailedResolution(id int64, l common.Location, typeName string) { + e.errs.ReportErrorAtID(id, l, "unexpected failed resolution of '%s'", typeName) +} + +func (e *typeErrors) unexpectedASTType(id int64, l common.Location, kind, typeName string) { + e.errs.ReportErrorAtID(id, l, "unexpected %s type: %v", kind, typeName) +} diff --git a/vendor/github.com/google/cel-go/checker/format.go b/vendor/github.com/google/cel-go/checker/format.go new file mode 100644 index 0000000000..95842905e6 --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/format.go @@ -0,0 +1,216 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "fmt" + "strings" + + chkdecls "github.com/google/cel-go/checker/decls" + "github.com/google/cel-go/common/types" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +const ( + kindUnknown = iota + 1 + kindError + kindFunction + kindDyn + kindPrimitive + kindWellKnown + kindWrapper + kindNull + kindAbstract + kindType + kindList + kindMap + kindObject + kindTypeParam +) + +// FormatCheckedType converts a type message into a string representation. +func FormatCheckedType(t *exprpb.Type) string { + switch kindOf(t) { + case kindDyn: + return "dyn" + case kindFunction: + return formatFunctionExprType(t.GetFunction().GetResultType(), + t.GetFunction().GetArgTypes(), + false) + case kindList: + return fmt.Sprintf("list(%s)", FormatCheckedType(t.GetListType().GetElemType())) + case kindObject: + return t.GetMessageType() + case kindMap: + return fmt.Sprintf("map(%s, %s)", + FormatCheckedType(t.GetMapType().GetKeyType()), + FormatCheckedType(t.GetMapType().GetValueType())) + case kindNull: + return "null" + case kindPrimitive: + switch t.GetPrimitive() { + case exprpb.Type_UINT64: + return "uint" + case exprpb.Type_INT64: + return "int" + } + return strings.Trim(strings.ToLower(t.GetPrimitive().String()), " ") + case kindType: + if t.GetType() == nil || t.GetType().GetTypeKind() == nil { + return "type" + } + return fmt.Sprintf("type(%s)", FormatCheckedType(t.GetType())) + case kindWellKnown: + switch t.GetWellKnown() { + case exprpb.Type_ANY: + return "any" + case exprpb.Type_DURATION: + return "duration" + case exprpb.Type_TIMESTAMP: + return "timestamp" + } + case kindWrapper: + return fmt.Sprintf("wrapper(%s)", + FormatCheckedType(chkdecls.NewPrimitiveType(t.GetWrapper()))) + case kindError: + return "!error!" + case kindTypeParam: + return t.GetTypeParam() + case kindAbstract: + at := t.GetAbstractType() + params := at.GetParameterTypes() + paramStrs := make([]string, len(params)) + for i, p := range params { + paramStrs[i] = FormatCheckedType(p) + } + return fmt.Sprintf("%s(%s)", at.GetName(), strings.Join(paramStrs, ", ")) + } + return t.String() +} + +type formatter func(any) string + +// FormatCELType formats a types.Type value to a string representation. +// +// The type formatting is identical to FormatCheckedType. +func FormatCELType(t any) string { + dt := t.(*types.Type) + switch dt.Kind() { + case types.AnyKind: + return "any" + case types.DurationKind: + return "duration" + case types.ErrorKind: + return "!error!" + case types.NullTypeKind: + return "null" + case types.TimestampKind: + return "timestamp" + case types.TypeParamKind: + return dt.TypeName() + case types.OpaqueKind: + if dt.TypeName() == "function" { + // There is no explicit function type in the new types representation, so information like + // whether the function is a member function is absent. + return formatFunctionDeclType(dt.Parameters()[0], dt.Parameters()[1:], false) + } + case types.UnspecifiedKind: + return "" + } + if len(dt.Parameters()) == 0 { + return dt.DeclaredTypeName() + } + paramTypeNames := make([]string, 0, len(dt.Parameters())) + for _, p := range dt.Parameters() { + paramTypeNames = append(paramTypeNames, FormatCELType(p)) + } + return fmt.Sprintf("%s(%s)", dt.TypeName(), strings.Join(paramTypeNames, ", ")) +} + +func formatExprType(t any) string { + if t == nil { + return "" + } + return FormatCheckedType(t.(*exprpb.Type)) +} + +func formatFunctionExprType(resultType *exprpb.Type, argTypes []*exprpb.Type, isInstance bool) string { + return formatFunctionInternal[*exprpb.Type](resultType, argTypes, isInstance, formatExprType) +} + +func formatFunctionDeclType(resultType *types.Type, argTypes []*types.Type, isInstance bool) string { + return formatFunctionInternal[*types.Type](resultType, argTypes, isInstance, FormatCELType) +} + +func formatFunctionInternal[T any](resultType T, argTypes []T, isInstance bool, format formatter) string { + result := "" + if isInstance { + target := argTypes[0] + argTypes = argTypes[1:] + result += format(target) + result += "." + } + result += "(" + for i, arg := range argTypes { + if i > 0 { + result += ", " + } + result += format(arg) + } + result += ")" + rt := format(resultType) + if rt != "" { + result += " -> " + result += rt + } + return result +} + +// kindOf returns the kind of the type as defined in the checked.proto. +func kindOf(t *exprpb.Type) int { + if t == nil || t.TypeKind == nil { + return kindUnknown + } + switch t.GetTypeKind().(type) { + case *exprpb.Type_Error: + return kindError + case *exprpb.Type_Function: + return kindFunction + case *exprpb.Type_Dyn: + return kindDyn + case *exprpb.Type_Primitive: + return kindPrimitive + case *exprpb.Type_WellKnown: + return kindWellKnown + case *exprpb.Type_Wrapper: + return kindWrapper + case *exprpb.Type_Null: + return kindNull + case *exprpb.Type_Type: + return kindType + case *exprpb.Type_ListType_: + return kindList + case *exprpb.Type_MapType_: + return kindMap + case *exprpb.Type_MessageType: + return kindObject + case *exprpb.Type_TypeParam: + return kindTypeParam + case *exprpb.Type_AbstractType_: + return kindAbstract + } + return kindUnknown +} diff --git a/vendor/github.com/google/cel-go/checker/mapping.go b/vendor/github.com/google/cel-go/checker/mapping.go new file mode 100644 index 0000000000..8163a908a5 --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/mapping.go @@ -0,0 +1,49 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "github.com/google/cel-go/common/types" +) + +type mapping struct { + mapping map[string]*types.Type +} + +func newMapping() *mapping { + return &mapping{ + mapping: make(map[string]*types.Type), + } +} + +func (m *mapping) add(from, to *types.Type) { + m.mapping[FormatCELType(from)] = to +} + +func (m *mapping) find(from *types.Type) (*types.Type, bool) { + if r, found := m.mapping[FormatCELType(from)]; found { + return r, found + } + return nil, false +} + +func (m *mapping) copy() *mapping { + c := newMapping() + + for k, v := range m.mapping { + c.mapping[k] = v + } + return c +} diff --git a/vendor/github.com/google/cel-go/checker/options.go b/vendor/github.com/google/cel-go/checker/options.go new file mode 100644 index 0000000000..0560c3813c --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/options.go @@ -0,0 +1,42 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +type options struct { + crossTypeNumericComparisons bool + homogeneousAggregateLiterals bool + validatedDeclarations *Scopes +} + +// Option is a functional option for configuring the type-checker +type Option func(*options) error + +// CrossTypeNumericComparisons toggles type-checker support for numeric comparisons across type +// See https://github.com/google/cel-spec/wiki/proposal-210 for more details. +func CrossTypeNumericComparisons(enabled bool) Option { + return func(opts *options) error { + opts.crossTypeNumericComparisons = enabled + return nil + } +} + +// ValidatedDeclarations provides a references to validated declarations which will be copied +// into new checker instances. +func ValidatedDeclarations(env *Env) Option { + return func(opts *options) error { + opts.validatedDeclarations = env.validatedDeclarations() + return nil + } +} diff --git a/vendor/github.com/google/cel-go/checker/printer.go b/vendor/github.com/google/cel-go/checker/printer.go new file mode 100644 index 0000000000..7a3984f02c --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/printer.go @@ -0,0 +1,74 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "sort" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/debug" +) + +type semanticAdorner struct { + checked *ast.AST +} + +var _ debug.Adorner = &semanticAdorner{} + +func (a *semanticAdorner) GetMetadata(elem any) string { + result := "" + e, isExpr := elem.(ast.Expr) + if !isExpr { + return result + } + t := a.checked.TypeMap()[e.ID()] + if t != nil { + result += "~" + result += FormatCELType(t) + } + + switch e.Kind() { + case ast.IdentKind, + ast.CallKind, + ast.ListKind, + ast.StructKind, + ast.SelectKind: + if ref, found := a.checked.ReferenceMap()[e.ID()]; found { + if len(ref.OverloadIDs) == 0 { + result += "^" + ref.Name + } else { + sort.Strings(ref.OverloadIDs) + for i, overload := range ref.OverloadIDs { + if i == 0 { + result += "^" + } else { + result += "|" + } + result += overload + } + } + } + } + + return result +} + +// Print returns a string representation of the Expr message, +// annotated with types from the CheckedExpr. The Expr must +// be a sub-expression embedded in the CheckedExpr. +func Print(e ast.Expr, checked *ast.AST) string { + a := &semanticAdorner{checked: checked} + return debug.ToAdornedDebugString(e, a) +} diff --git a/vendor/github.com/google/cel-go/checker/scopes.go b/vendor/github.com/google/cel-go/checker/scopes.go new file mode 100644 index 0000000000..8bb73ddb6a --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/scopes.go @@ -0,0 +1,147 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "github.com/google/cel-go/common/decls" +) + +// Scopes represents nested Decl sets where the Scopes value contains a Groups containing all +// identifiers in scope and an optional parent representing outer scopes. +// Each Groups value is a mapping of names to Decls in the ident and function namespaces. +// Lookups are performed such that bindings in inner scopes shadow those in outer scopes. +type Scopes struct { + parent *Scopes + scopes *Group +} + +// newScopes creates a new, empty Scopes. +// Some operations can't be safely performed until a Group is added with Push. +func newScopes() *Scopes { + return &Scopes{ + scopes: newGroup(), + } +} + +// Copy creates a copy of the current Scopes values, including a copy of its parent if non-nil. +func (s *Scopes) Copy() *Scopes { + cpy := newScopes() + if s == nil { + return cpy + } + if s.parent != nil { + cpy.parent = s.parent.Copy() + } + cpy.scopes = s.scopes.copy() + return cpy +} + +// Push creates a new Scopes value which references the current Scope as its parent. +func (s *Scopes) Push() *Scopes { + return &Scopes{ + parent: s, + scopes: newGroup(), + } +} + +// Pop returns the parent Scopes value for the current scope, or the current scope if the parent +// is nil. +func (s *Scopes) Pop() *Scopes { + if s.parent != nil { + return s.parent + } + // TODO: Consider whether this should be an error / panic. + return s +} + +// AddIdent adds the ident Decl in the current scope. +// Note: If the name collides with an existing identifier in the scope, the Decl is overwritten. +func (s *Scopes) AddIdent(decl *decls.VariableDecl) { + s.scopes.idents[decl.Name()] = decl +} + +// FindIdent finds the first ident Decl with a matching name in Scopes, or nil if one cannot be +// found. +// Note: The search is performed from innermost to outermost. +func (s *Scopes) FindIdent(name string) *decls.VariableDecl { + if ident, found := s.scopes.idents[name]; found { + return ident + } + if s.parent != nil { + return s.parent.FindIdent(name) + } + return nil +} + +// FindIdentInScope finds the first ident Decl with a matching name in the current Scopes value, or +// nil if one does not exist. +// Note: The search is only performed on the current scope and does not search outer scopes. +func (s *Scopes) FindIdentInScope(name string) *decls.VariableDecl { + if ident, found := s.scopes.idents[name]; found { + return ident + } + return nil +} + +// SetFunction adds the function Decl to the current scope. +// Note: Any previous entry for a function in the current scope with the same name is overwritten. +func (s *Scopes) SetFunction(fn *decls.FunctionDecl) { + s.scopes.functions[fn.Name()] = fn +} + +// FindFunction finds the first function Decl with a matching name in Scopes. +// The search is performed from innermost to outermost. +// Returns nil if no such function in Scopes. +func (s *Scopes) FindFunction(name string) *decls.FunctionDecl { + if fn, found := s.scopes.functions[name]; found { + return fn + } + if s.parent != nil { + return s.parent.FindFunction(name) + } + return nil +} + +// Group is a set of Decls that is pushed on or popped off a Scopes as a unit. +// Contains separate namespaces for identifier and function Decls. +// (Should be named "Scope" perhaps?) +type Group struct { + idents map[string]*decls.VariableDecl + functions map[string]*decls.FunctionDecl +} + +// copy creates a new Group instance with a shallow copy of the variables and functions. +// If callers need to mutate the exprpb.Decl definitions for a Function, they should copy-on-write. +func (g *Group) copy() *Group { + cpy := &Group{ + idents: make(map[string]*decls.VariableDecl, len(g.idents)), + functions: make(map[string]*decls.FunctionDecl, len(g.functions)), + } + for n, id := range g.idents { + cpy.idents[n] = id + } + for n, fn := range g.functions { + cpy.functions[n] = fn + } + return cpy +} + +// newGroup creates a new Group with empty maps for identifiers and functions. +func newGroup() *Group { + return &Group{ + idents: make(map[string]*decls.VariableDecl), + functions: make(map[string]*decls.FunctionDecl), + } +} diff --git a/vendor/github.com/google/cel-go/checker/types.go b/vendor/github.com/google/cel-go/checker/types.go new file mode 100644 index 0000000000..4c65b2737c --- /dev/null +++ b/vendor/github.com/google/cel-go/checker/types.go @@ -0,0 +1,314 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package checker + +import ( + "github.com/google/cel-go/common/types" +) + +// isDyn returns true if the input t is either type DYN or a well-known ANY message. +func isDyn(t *types.Type) bool { + // Note: object type values that are well-known and map to a DYN value in practice + // are sanitized prior to being added to the environment. + switch t.Kind() { + case types.DynKind, types.AnyKind: + return true + default: + return false + } +} + +// isDynOrError returns true if the input is either an Error, DYN, or well-known ANY message. +func isDynOrError(t *types.Type) bool { + return isError(t) || isDyn(t) +} + +func isError(t *types.Type) bool { + return t.Kind() == types.ErrorKind +} + +func isOptional(t *types.Type) bool { + if t.Kind() == types.OpaqueKind { + return t.TypeName() == "optional_type" + } + return false +} + +func maybeUnwrapOptional(t *types.Type) (*types.Type, bool) { + if isOptional(t) { + return t.Parameters()[0], true + } + return t, false +} + +// isEqualOrLessSpecific checks whether one type is equal or less specific than the other one. +// A type is less specific if it matches the other type using the DYN type. +func isEqualOrLessSpecific(t1, t2 *types.Type) bool { + kind1, kind2 := t1.Kind(), t2.Kind() + // The first type is less specific. + if isDyn(t1) || kind1 == types.TypeParamKind { + return true + } + // The first type is not less specific. + if isDyn(t2) || kind2 == types.TypeParamKind { + return false + } + // Types must be of the same kind to be equal. + if kind1 != kind2 { + return false + } + + // With limited exceptions for ANY and JSON values, the types must agree and be equivalent in + // order to return true. + switch kind1 { + case types.OpaqueKind: + if t1.TypeName() != t2.TypeName() || + len(t1.Parameters()) != len(t2.Parameters()) { + return false + } + for i, p1 := range t1.Parameters() { + if !isEqualOrLessSpecific(p1, t2.Parameters()[i]) { + return false + } + } + return true + case types.ListKind: + return isEqualOrLessSpecific(t1.Parameters()[0], t2.Parameters()[0]) + case types.MapKind: + return isEqualOrLessSpecific(t1.Parameters()[0], t2.Parameters()[0]) && + isEqualOrLessSpecific(t1.Parameters()[1], t2.Parameters()[1]) + case types.TypeKind: + return true + default: + return t1.IsExactType(t2) + } +} + +// / internalIsAssignable returns true if t1 is assignable to t2. +func internalIsAssignable(m *mapping, t1, t2 *types.Type) bool { + // Process type parameters. + kind1, kind2 := t1.Kind(), t2.Kind() + if kind2 == types.TypeParamKind { + // If t2 is a valid type substitution for t1, return true. + valid, t2HasSub := isValidTypeSubstitution(m, t1, t2) + if valid { + return true + } + // If t2 is not a valid type sub for t1, and already has a known substitution return false + // since it is not possible for t1 to be a substitution for t2. + if !valid && t2HasSub { + return false + } + // Otherwise, fall through to check whether t1 is a possible substitution for t2. + } + if kind1 == types.TypeParamKind { + // Return whether t1 is a valid substitution for t2. If not, do no additional checks as the + // possible type substitutions have been searched in both directions. + valid, _ := isValidTypeSubstitution(m, t2, t1) + return valid + } + + // Next check for wildcard types. + if isDynOrError(t1) || isDynOrError(t2) { + return true + } + // Preserve the nullness checks of the legacy type-checker. + if kind1 == types.NullTypeKind { + return internalIsAssignableNull(t2) + } + if kind2 == types.NullTypeKind { + return internalIsAssignableNull(t1) + } + + // Test for when the types do not need to agree, but are more specific than dyn. + switch kind1 { + case types.BoolKind, types.BytesKind, types.DoubleKind, types.IntKind, types.StringKind, types.UintKind, + types.AnyKind, types.DurationKind, types.TimestampKind, + types.StructKind: + // Test whether t2 is assignable from t1. The order of this check won't usually matter; + // however, there may be cases where type capabilities are expanded beyond what is supported + // in the current common/types package. For example, an interface designation for a group of + // Struct types. + return t2.IsAssignableType(t1) + case types.TypeKind: + return kind2 == types.TypeKind + case types.OpaqueKind, types.ListKind, types.MapKind: + return t1.Kind() == t2.Kind() && t1.TypeName() == t2.TypeName() && + internalIsAssignableList(m, t1.Parameters(), t2.Parameters()) + default: + return false + } +} + +// isValidTypeSubstitution returns whether t2 (or its type substitution) is a valid type +// substitution for t1, and whether t2 has a type substitution in mapping m. +// +// The type t2 is a valid substitution for t1 if any of the following statements is true +// - t2 has a type substitution (t2sub) equal to t1 +// - t2 has a type substitution (t2sub) assignable to t1 +// - t2 does not occur within t1. +func isValidTypeSubstitution(m *mapping, t1, t2 *types.Type) (valid, hasSub bool) { + // Early return if the t1 and t2 are the same instance. + kind1, kind2 := t1.Kind(), t2.Kind() + if kind1 == kind2 && t1.IsExactType(t2) { + return true, true + } + if t2Sub, found := m.find(t2); found { + // Early return if t1 and t2Sub are the same instance as otherwise the mapping + // might mark a type as being a subtitution for itself. + if kind1 == t2Sub.Kind() && t1.IsExactType(t2Sub) { + return true, true + } + // If the types are compatible, pick the more general type and return true + if internalIsAssignable(m, t1, t2Sub) { + t2New := mostGeneral(t1, t2Sub) + // only update the type reference map if the target type does not occur within it. + if notReferencedIn(m, t2, t2New) { + m.add(t2, t2New) + } + // acknowledge the type agreement, and that the substitution is already tracked. + return true, true + } + return false, true + } + if notReferencedIn(m, t2, t1) { + m.add(t2, t1) + return true, false + } + return false, false +} + +// internalIsAssignableList returns true if the element types at each index in the list are +// assignable from l1[i] to l2[i]. The list lengths must also agree for the lists to be +// assignable. +func internalIsAssignableList(m *mapping, l1, l2 []*types.Type) bool { + if len(l1) != len(l2) { + return false + } + for i, t1 := range l1 { + if !internalIsAssignable(m, t1, l2[i]) { + return false + } + } + return true +} + +// internalIsAssignableNull returns true if the type is nullable. +func internalIsAssignableNull(t *types.Type) bool { + return isLegacyNullable(t) || t.IsAssignableType(types.NullType) +} + +// isLegacyNullable preserves the null-ness compatibility of the original type-checker implementation. +func isLegacyNullable(t *types.Type) bool { + switch t.Kind() { + case types.OpaqueKind, types.StructKind, types.AnyKind, types.DurationKind, types.TimestampKind: + return true + } + return false +} + +// isAssignable returns an updated type substitution mapping if t1 is assignable to t2. +func isAssignable(m *mapping, t1, t2 *types.Type) *mapping { + mCopy := m.copy() + if internalIsAssignable(mCopy, t1, t2) { + return mCopy + } + return nil +} + +// isAssignableList returns an updated type substitution mapping if l1 is assignable to l2. +func isAssignableList(m *mapping, l1, l2 []*types.Type) *mapping { + mCopy := m.copy() + if internalIsAssignableList(mCopy, l1, l2) { + return mCopy + } + return nil +} + +// mostGeneral returns the more general of two types which are known to unify. +func mostGeneral(t1, t2 *types.Type) *types.Type { + if isEqualOrLessSpecific(t1, t2) { + return t1 + } + return t2 +} + +// notReferencedIn checks whether the type doesn't appear directly or transitively within the other +// type. This is a standard requirement for type unification, commonly referred to as the "occurs +// check". +func notReferencedIn(m *mapping, t, withinType *types.Type) bool { + if t.IsExactType(withinType) { + return false + } + withinKind := withinType.Kind() + switch withinKind { + case types.TypeParamKind: + wtSub, found := m.find(withinType) + if !found { + return true + } + return notReferencedIn(m, t, wtSub) + case types.OpaqueKind, types.ListKind, types.MapKind, types.TypeKind: + for _, pt := range withinType.Parameters() { + if !notReferencedIn(m, t, pt) { + return false + } + } + return true + default: + return true + } +} + +// substitute replaces all direct and indirect occurrences of bound type parameters. Unbound type +// parameters are replaced by DYN if typeParamToDyn is true. +func substitute(m *mapping, t *types.Type, typeParamToDyn bool) *types.Type { + if tSub, found := m.find(t); found { + return substitute(m, tSub, typeParamToDyn) + } + kind := t.Kind() + if typeParamToDyn && kind == types.TypeParamKind { + return types.DynType + } + switch kind { + case types.OpaqueKind: + return types.NewOpaqueType(t.TypeName(), substituteParams(m, t.Parameters(), typeParamToDyn)...) + case types.ListKind: + return types.NewListType(substitute(m, t.Parameters()[0], typeParamToDyn)) + case types.MapKind: + return types.NewMapType(substitute(m, t.Parameters()[0], typeParamToDyn), + substitute(m, t.Parameters()[1], typeParamToDyn)) + case types.TypeKind: + if len(t.Parameters()) > 0 { + tParam := t.Parameters()[0] + return types.NewTypeTypeWithParam(substitute(m, tParam, typeParamToDyn)) + } + return t + default: + return t + } +} + +func substituteParams(m *mapping, typeParams []*types.Type, typeParamToDyn bool) []*types.Type { + subParams := make([]*types.Type, len(typeParams)) + for i, tp := range typeParams { + subParams[i] = substitute(m, tp, typeParamToDyn) + } + return subParams +} + +func newFunctionType(resultType *types.Type, argTypes ...*types.Type) *types.Type { + return types.NewOpaqueType("function", append([]*types.Type{resultType}, argTypes...)...) +} diff --git a/vendor/github.com/google/cel-go/common/BUILD.bazel b/vendor/github.com/google/cel-go/common/BUILD.bazel new file mode 100644 index 0000000000..1b1b7914d6 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/BUILD.bazel @@ -0,0 +1,36 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "cost.go", + "doc.go", + "error.go", + "errors.go", + "location.go", + "source.go", + ], + importpath = "github.com/google/cel-go/common", + deps = [ + "//common/runes:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "doc_test.go", + "errors_test.go", + "source_test.go", + ], + embed = [ + ":go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/ast/BUILD.bazel b/vendor/github.com/google/cel-go/common/ast/BUILD.bazel new file mode 100644 index 0000000000..9824f57a9f --- /dev/null +++ b/vendor/github.com/google/cel-go/common/ast/BUILD.bazel @@ -0,0 +1,57 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "ast.go", + "conversion.go", + "expr.go", + "factory.go", + "navigable.go", + ], + importpath = "github.com/google/cel-go/common/ast", + deps = [ + "//common:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "@dev_cel_expr//:expr", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + srcs = [ + "ast_test.go", + "conversion_test.go", + "expr_test.go", + "navigable_test.go", + ], + embed = [ + ":go_default_library", + ], + deps = [ + "//checker:go_default_library", + "//checker/decls:go_default_library", + "//common:go_default_library", + "//common/containers:go_default_library", + "//common/decls:go_default_library", + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/stdlib:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//parser:go_default_library", + "//test/proto3pb:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//encoding/prototext:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/ast/ast.go b/vendor/github.com/google/cel-go/common/ast/ast.go new file mode 100644 index 0000000000..62c09cfc64 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/ast/ast.go @@ -0,0 +1,535 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package ast declares data structures useful for parsed and checked abstract syntax trees +package ast + +import ( + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// AST contains a protobuf expression and source info along with CEL-native type and reference information. +type AST struct { + expr Expr + sourceInfo *SourceInfo + typeMap map[int64]*types.Type + refMap map[int64]*ReferenceInfo +} + +// Expr returns the root ast.Expr value in the AST. +func (a *AST) Expr() Expr { + if a == nil { + return nilExpr + } + return a.expr +} + +// SourceInfo returns the source metadata associated with the parse / type-check passes. +func (a *AST) SourceInfo() *SourceInfo { + if a == nil { + return nil + } + return a.sourceInfo +} + +// GetType returns the type for the expression at the given id, if one exists, else types.DynType. +func (a *AST) GetType(id int64) *types.Type { + if t, found := a.TypeMap()[id]; found { + return t + } + return types.DynType +} + +// SetType sets the type of the expression node at the given id. +func (a *AST) SetType(id int64, t *types.Type) { + if a == nil { + return + } + a.typeMap[id] = t +} + +// TypeMap returns the map of expression ids to type-checked types. +// +// If the AST is not type-checked, the map will be empty. +func (a *AST) TypeMap() map[int64]*types.Type { + if a == nil { + return map[int64]*types.Type{} + } + return a.typeMap +} + +// GetOverloadIDs returns the set of overload function names for a given expression id. +// +// If the expression id is not a function call, or the AST is not type-checked, the result will be empty. +func (a *AST) GetOverloadIDs(id int64) []string { + if ref, found := a.ReferenceMap()[id]; found { + return ref.OverloadIDs + } + return []string{} +} + +// ReferenceMap returns the map of expression id to identifier, constant, and function references. +func (a *AST) ReferenceMap() map[int64]*ReferenceInfo { + if a == nil { + return map[int64]*ReferenceInfo{} + } + return a.refMap +} + +// SetReference adds a reference to the checked AST type map. +func (a *AST) SetReference(id int64, r *ReferenceInfo) { + if a == nil { + return + } + a.refMap[id] = r +} + +// IsChecked returns whether the AST is type-checked. +func (a *AST) IsChecked() bool { + return a != nil && len(a.TypeMap()) > 0 +} + +// NewAST creates a base AST instance with an ast.Expr and ast.SourceInfo value. +func NewAST(e Expr, sourceInfo *SourceInfo) *AST { + if e == nil { + e = nilExpr + } + return &AST{ + expr: e, + sourceInfo: sourceInfo, + typeMap: make(map[int64]*types.Type), + refMap: make(map[int64]*ReferenceInfo), + } +} + +// NewCheckedAST wraps an parsed AST and augments it with type and reference metadata. +func NewCheckedAST(parsed *AST, typeMap map[int64]*types.Type, refMap map[int64]*ReferenceInfo) *AST { + return &AST{ + expr: parsed.Expr(), + sourceInfo: parsed.SourceInfo(), + typeMap: typeMap, + refMap: refMap, + } +} + +// Copy creates a deep copy of the Expr and SourceInfo values in the input AST. +// +// Copies of the Expr value are generated using an internal default ExprFactory. +func Copy(a *AST) *AST { + if a == nil { + return nil + } + e := defaultFactory.CopyExpr(a.expr) + if !a.IsChecked() { + return NewAST(e, CopySourceInfo(a.SourceInfo())) + } + typesCopy := make(map[int64]*types.Type, len(a.typeMap)) + for id, t := range a.typeMap { + typesCopy[id] = t + } + refsCopy := make(map[int64]*ReferenceInfo, len(a.refMap)) + for id, r := range a.refMap { + refsCopy[id] = r + } + return NewCheckedAST(NewAST(e, CopySourceInfo(a.SourceInfo())), typesCopy, refsCopy) +} + +// MaxID returns the upper-bound, non-inclusive, of ids present within the AST's Expr value. +func MaxID(a *AST) int64 { + visitor := &maxIDVisitor{maxID: 1} + PostOrderVisit(a.Expr(), visitor) + for id, call := range a.SourceInfo().MacroCalls() { + PostOrderVisit(call, visitor) + if id > visitor.maxID { + visitor.maxID = id + 1 + } + } + return visitor.maxID + 1 +} + +// Heights computes the heights of all AST expressions and returns a map from expression id to height. +func Heights(a *AST) map[int64]int { + visitor := make(heightVisitor) + PostOrderVisit(a.Expr(), visitor) + return visitor +} + +// NewSourceInfo creates a simple SourceInfo object from an input common.Source value. +func NewSourceInfo(src common.Source) *SourceInfo { + var lineOffsets []int32 + var desc string + baseLine := int32(0) + baseCol := int32(0) + if src != nil { + desc = src.Description() + lineOffsets = src.LineOffsets() + // Determine whether the source metadata should be computed relative + // to a base line and column value. This can be determined by requesting + // the location for offset 0 from the source object. + if loc, found := src.OffsetLocation(0); found { + baseLine = int32(loc.Line()) - 1 + baseCol = int32(loc.Column()) + } + } + return &SourceInfo{ + desc: desc, + lines: lineOffsets, + baseLine: baseLine, + baseCol: baseCol, + offsetRanges: make(map[int64]OffsetRange), + macroCalls: make(map[int64]Expr), + } +} + +// CopySourceInfo creates a deep copy of the MacroCalls within the input SourceInfo. +// +// Copies of macro Expr values are generated using an internal default ExprFactory. +func CopySourceInfo(info *SourceInfo) *SourceInfo { + if info == nil { + return nil + } + rangesCopy := make(map[int64]OffsetRange, len(info.offsetRanges)) + for id, off := range info.offsetRanges { + rangesCopy[id] = off + } + callsCopy := make(map[int64]Expr, len(info.macroCalls)) + for id, call := range info.macroCalls { + callsCopy[id] = defaultFactory.CopyExpr(call) + } + return &SourceInfo{ + syntax: info.syntax, + desc: info.desc, + lines: info.lines, + baseLine: info.baseLine, + baseCol: info.baseCol, + offsetRanges: rangesCopy, + macroCalls: callsCopy, + } +} + +// SourceInfo records basic information about the expression as a textual input and +// as a parsed expression value. +type SourceInfo struct { + syntax string + desc string + lines []int32 + baseLine int32 + baseCol int32 + offsetRanges map[int64]OffsetRange + macroCalls map[int64]Expr +} + +// SyntaxVersion returns the syntax version associated with the text expression. +func (s *SourceInfo) SyntaxVersion() string { + if s == nil { + return "" + } + return s.syntax +} + +// Description provides information about where the expression came from. +func (s *SourceInfo) Description() string { + if s == nil { + return "" + } + return s.desc +} + +// LineOffsets returns a list of the 0-based character offsets in the input text where newlines appear. +func (s *SourceInfo) LineOffsets() []int32 { + if s == nil { + return []int32{} + } + return s.lines +} + +// MacroCalls returns a map of expression id to ast.Expr value where the id represents the expression +// node where the macro was inserted into the AST, and the ast.Expr value represents the original call +// signature which was replaced. +func (s *SourceInfo) MacroCalls() map[int64]Expr { + if s == nil { + return map[int64]Expr{} + } + return s.macroCalls +} + +// GetMacroCall returns the original ast.Expr value for the given expression if it was generated via +// a macro replacement. +// +// Note, parsing options must be enabled to track macro calls before this method will return a value. +func (s *SourceInfo) GetMacroCall(id int64) (Expr, bool) { + e, found := s.MacroCalls()[id] + return e, found +} + +// SetMacroCall records a macro call at a specific location. +func (s *SourceInfo) SetMacroCall(id int64, e Expr) { + if s != nil { + s.macroCalls[id] = e + } +} + +// ClearMacroCall removes the macro call at the given expression id. +func (s *SourceInfo) ClearMacroCall(id int64) { + if s != nil { + delete(s.macroCalls, id) + } +} + +// OffsetRanges returns a map of expression id to OffsetRange values where the range indicates either: +// the start and end position in the input stream where the expression occurs, or the start position +// only. If the range only captures start position, the stop position of the range will be equal to +// the start. +func (s *SourceInfo) OffsetRanges() map[int64]OffsetRange { + if s == nil { + return map[int64]OffsetRange{} + } + return s.offsetRanges +} + +// GetOffsetRange retrieves an OffsetRange for the given expression id if one exists. +func (s *SourceInfo) GetOffsetRange(id int64) (OffsetRange, bool) { + if s == nil { + return OffsetRange{}, false + } + o, found := s.offsetRanges[id] + return o, found +} + +// SetOffsetRange sets the OffsetRange for the given expression id. +func (s *SourceInfo) SetOffsetRange(id int64, o OffsetRange) { + if s == nil { + return + } + s.offsetRanges[id] = o +} + +// ClearOffsetRange removes the OffsetRange for the given expression id. +func (s *SourceInfo) ClearOffsetRange(id int64) { + if s != nil { + delete(s.offsetRanges, id) + } +} + +// GetStartLocation calculates the human-readable 1-based line and 0-based column of the first character +// of the expression node at the id. +func (s *SourceInfo) GetStartLocation(id int64) common.Location { + if o, found := s.GetOffsetRange(id); found { + return s.GetLocationByOffset(o.Start) + } + return common.NoLocation +} + +// GetStopLocation calculates the human-readable 1-based line and 0-based column of the last character for +// the expression node at the given id. +// +// If the SourceInfo was generated from a serialized protobuf representation, the stop location will +// be identical to the start location for the expression. +func (s *SourceInfo) GetStopLocation(id int64) common.Location { + if o, found := s.GetOffsetRange(id); found { + return s.GetLocationByOffset(o.Stop) + } + return common.NoLocation +} + +// GetLocationByOffset returns the line and column information for a given character offset. +func (s *SourceInfo) GetLocationByOffset(offset int32) common.Location { + line := 1 + col := int(offset) + for _, lineOffset := range s.LineOffsets() { + if lineOffset > offset { + break + } + line++ + col = int(offset - lineOffset) + } + return common.NewLocation(line, col) +} + +// ComputeOffset calculates the 0-based character offset from a 1-based line and 0-based column. +func (s *SourceInfo) ComputeOffset(line, col int32) int32 { + if s != nil { + line = s.baseLine + line + col = s.baseCol + col + } + if line == 1 { + return col + } + if line < 1 || line > int32(len(s.LineOffsets())) { + return -1 + } + offset := s.LineOffsets()[line-2] + return offset + col +} + +// OffsetRange captures the start and stop positions of a section of text in the input expression. +type OffsetRange struct { + Start int32 + Stop int32 +} + +// ReferenceInfo contains a CEL native representation of an identifier reference which may refer to +// either a qualified identifier name, a set of overload ids, or a constant value from an enum. +type ReferenceInfo struct { + Name string + OverloadIDs []string + Value ref.Val +} + +// NewIdentReference creates a ReferenceInfo instance for an identifier with an optional constant value. +func NewIdentReference(name string, value ref.Val) *ReferenceInfo { + return &ReferenceInfo{Name: name, Value: value} +} + +// NewFunctionReference creates a ReferenceInfo instance for a set of function overloads. +func NewFunctionReference(overloads ...string) *ReferenceInfo { + info := &ReferenceInfo{} + for _, id := range overloads { + info.AddOverload(id) + } + return info +} + +// AddOverload appends a function overload ID to the ReferenceInfo. +func (r *ReferenceInfo) AddOverload(overloadID string) { + for _, id := range r.OverloadIDs { + if id == overloadID { + return + } + } + r.OverloadIDs = append(r.OverloadIDs, overloadID) +} + +// Equals returns whether two references are identical to each other. +func (r *ReferenceInfo) Equals(other *ReferenceInfo) bool { + if r.Name != other.Name { + return false + } + if len(r.OverloadIDs) != len(other.OverloadIDs) { + return false + } + if len(r.OverloadIDs) != 0 { + overloadMap := make(map[string]struct{}, len(r.OverloadIDs)) + for _, id := range r.OverloadIDs { + overloadMap[id] = struct{}{} + } + for _, id := range other.OverloadIDs { + _, found := overloadMap[id] + if !found { + return false + } + } + } + if r.Value == nil && other.Value == nil { + return true + } + if r.Value == nil && other.Value != nil || + r.Value != nil && other.Value == nil || + r.Value.Equal(other.Value) != types.True { + return false + } + return true +} + +type maxIDVisitor struct { + maxID int64 + *baseVisitor +} + +// VisitExpr updates the max identifier if the incoming expression id is greater than previously observed. +func (v *maxIDVisitor) VisitExpr(e Expr) { + if v.maxID < e.ID() { + v.maxID = e.ID() + } +} + +// VisitEntryExpr updates the max identifier if the incoming entry id is greater than previously observed. +func (v *maxIDVisitor) VisitEntryExpr(e EntryExpr) { + if v.maxID < e.ID() { + v.maxID = e.ID() + } +} + +type heightVisitor map[int64]int + +// VisitExpr computes the height of a given node as the max height of its children plus one. +// +// Identifiers and literals are treated as having a height of zero. +func (hv heightVisitor) VisitExpr(e Expr) { + // default includes IdentKind, LiteralKind + hv[e.ID()] = 0 + switch e.Kind() { + case SelectKind: + hv[e.ID()] = 1 + hv[e.AsSelect().Operand().ID()] + case CallKind: + c := e.AsCall() + height := hv.maxHeight(c.Args()...) + if c.IsMemberFunction() { + tHeight := hv[c.Target().ID()] + if tHeight > height { + height = tHeight + } + } + hv[e.ID()] = 1 + height + case ListKind: + l := e.AsList() + hv[e.ID()] = 1 + hv.maxHeight(l.Elements()...) + case MapKind: + m := e.AsMap() + hv[e.ID()] = 1 + hv.maxEntryHeight(m.Entries()...) + case StructKind: + s := e.AsStruct() + hv[e.ID()] = 1 + hv.maxEntryHeight(s.Fields()...) + case ComprehensionKind: + comp := e.AsComprehension() + hv[e.ID()] = 1 + hv.maxHeight(comp.IterRange(), comp.AccuInit(), comp.LoopCondition(), comp.LoopStep(), comp.Result()) + } +} + +// VisitEntryExpr computes the max height of a map or struct entry and associates the height with the entry id. +func (hv heightVisitor) VisitEntryExpr(e EntryExpr) { + hv[e.ID()] = 0 + switch e.Kind() { + case MapEntryKind: + me := e.AsMapEntry() + hv[e.ID()] = hv.maxHeight(me.Value(), me.Key()) + case StructFieldKind: + sf := e.AsStructField() + hv[e.ID()] = hv[sf.Value().ID()] + } +} + +func (hv heightVisitor) maxHeight(exprs ...Expr) int { + max := 0 + for _, e := range exprs { + h := hv[e.ID()] + if h > max { + max = h + } + } + return max +} + +func (hv heightVisitor) maxEntryHeight(entries ...EntryExpr) int { + max := 0 + for _, e := range entries { + h := hv[e.ID()] + if h > max { + max = h + } + } + return max +} diff --git a/vendor/github.com/google/cel-go/common/ast/conversion.go b/vendor/github.com/google/cel-go/common/ast/conversion.go new file mode 100644 index 0000000000..435d8f6547 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/ast/conversion.go @@ -0,0 +1,659 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package ast + +import ( + "fmt" + + "google.golang.org/protobuf/proto" + + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + + celpb "cel.dev/expr" + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +// ToProto converts an AST to a CheckedExpr protobouf. +func ToProto(ast *AST) (*exprpb.CheckedExpr, error) { + refMap := make(map[int64]*exprpb.Reference, len(ast.ReferenceMap())) + for id, ref := range ast.ReferenceMap() { + r, err := ReferenceInfoToProto(ref) + if err != nil { + return nil, err + } + refMap[id] = r + } + typeMap := make(map[int64]*exprpb.Type, len(ast.TypeMap())) + for id, typ := range ast.TypeMap() { + t, err := types.TypeToExprType(typ) + if err != nil { + return nil, err + } + typeMap[id] = t + } + e, err := ExprToProto(ast.Expr()) + if err != nil { + return nil, err + } + info, err := SourceInfoToProto(ast.SourceInfo()) + if err != nil { + return nil, err + } + return &exprpb.CheckedExpr{ + Expr: e, + SourceInfo: info, + ReferenceMap: refMap, + TypeMap: typeMap, + }, nil +} + +// ToAST converts a CheckedExpr protobuf to an AST instance. +func ToAST(checked *exprpb.CheckedExpr) (*AST, error) { + refMap := make(map[int64]*ReferenceInfo, len(checked.GetReferenceMap())) + for id, ref := range checked.GetReferenceMap() { + r, err := ProtoToReferenceInfo(ref) + if err != nil { + return nil, err + } + refMap[id] = r + } + typeMap := make(map[int64]*types.Type, len(checked.GetTypeMap())) + for id, typ := range checked.GetTypeMap() { + t, err := types.ExprTypeToType(typ) + if err != nil { + return nil, err + } + typeMap[id] = t + } + info, err := ProtoToSourceInfo(checked.GetSourceInfo()) + if err != nil { + return nil, err + } + root, err := ProtoToExpr(checked.GetExpr()) + if err != nil { + return nil, err + } + ast := NewCheckedAST(NewAST(root, info), typeMap, refMap) + return ast, nil +} + +// ProtoToExpr converts a protobuf Expr value to an ast.Expr value. +func ProtoToExpr(e *exprpb.Expr) (Expr, error) { + factory := NewExprFactory() + return exprInternal(factory, e) +} + +// ProtoToEntryExpr converts a protobuf struct/map entry to an ast.EntryExpr +func ProtoToEntryExpr(e *exprpb.Expr_CreateStruct_Entry) (EntryExpr, error) { + factory := NewExprFactory() + switch e.GetKeyKind().(type) { + case *exprpb.Expr_CreateStruct_Entry_FieldKey: + return exprStructField(factory, e.GetId(), e) + case *exprpb.Expr_CreateStruct_Entry_MapKey: + return exprMapEntry(factory, e.GetId(), e) + } + return nil, fmt.Errorf("unsupported expr entry kind: %v", e) +} + +func exprInternal(factory ExprFactory, e *exprpb.Expr) (Expr, error) { + id := e.GetId() + switch e.GetExprKind().(type) { + case *exprpb.Expr_CallExpr: + return exprCall(factory, id, e.GetCallExpr()) + case *exprpb.Expr_ComprehensionExpr: + return exprComprehension(factory, id, e.GetComprehensionExpr()) + case *exprpb.Expr_ConstExpr: + return exprLiteral(factory, id, e.GetConstExpr()) + case *exprpb.Expr_IdentExpr: + return exprIdent(factory, id, e.GetIdentExpr()) + case *exprpb.Expr_ListExpr: + return exprList(factory, id, e.GetListExpr()) + case *exprpb.Expr_SelectExpr: + return exprSelect(factory, id, e.GetSelectExpr()) + case *exprpb.Expr_StructExpr: + s := e.GetStructExpr() + if s.GetMessageName() != "" { + return exprStruct(factory, id, s) + } + return exprMap(factory, id, s) + } + return factory.NewUnspecifiedExpr(id), nil +} + +func exprCall(factory ExprFactory, id int64, call *exprpb.Expr_Call) (Expr, error) { + var err error + args := make([]Expr, len(call.GetArgs())) + for i, a := range call.GetArgs() { + args[i], err = exprInternal(factory, a) + if err != nil { + return nil, err + } + } + if call.GetTarget() == nil { + return factory.NewCall(id, call.GetFunction(), args...), nil + } + + target, err := exprInternal(factory, call.GetTarget()) + if err != nil { + return nil, err + } + return factory.NewMemberCall(id, call.GetFunction(), target, args...), nil +} + +func exprComprehension(factory ExprFactory, id int64, comp *exprpb.Expr_Comprehension) (Expr, error) { + iterRange, err := exprInternal(factory, comp.GetIterRange()) + if err != nil { + return nil, err + } + accuInit, err := exprInternal(factory, comp.GetAccuInit()) + if err != nil { + return nil, err + } + loopCond, err := exprInternal(factory, comp.GetLoopCondition()) + if err != nil { + return nil, err + } + loopStep, err := exprInternal(factory, comp.GetLoopStep()) + if err != nil { + return nil, err + } + result, err := exprInternal(factory, comp.GetResult()) + if err != nil { + return nil, err + } + return factory.NewComprehensionTwoVar(id, + iterRange, + comp.GetIterVar(), + comp.GetIterVar2(), + comp.GetAccuVar(), + accuInit, + loopCond, + loopStep, + result), nil +} + +func exprLiteral(factory ExprFactory, id int64, c *exprpb.Constant) (Expr, error) { + val, err := ConstantToVal(c) + if err != nil { + return nil, err + } + return factory.NewLiteral(id, val), nil +} + +func exprIdent(factory ExprFactory, id int64, i *exprpb.Expr_Ident) (Expr, error) { + return factory.NewIdent(id, i.GetName()), nil +} + +func exprList(factory ExprFactory, id int64, l *exprpb.Expr_CreateList) (Expr, error) { + elems := make([]Expr, len(l.GetElements())) + for i, e := range l.GetElements() { + elem, err := exprInternal(factory, e) + if err != nil { + return nil, err + } + elems[i] = elem + } + return factory.NewList(id, elems, l.GetOptionalIndices()), nil +} + +func exprMap(factory ExprFactory, id int64, s *exprpb.Expr_CreateStruct) (Expr, error) { + entries := make([]EntryExpr, len(s.GetEntries())) + var err error + for i, entry := range s.GetEntries() { + entries[i], err = exprMapEntry(factory, entry.GetId(), entry) + if err != nil { + return nil, err + } + } + return factory.NewMap(id, entries), nil +} + +func exprMapEntry(factory ExprFactory, id int64, e *exprpb.Expr_CreateStruct_Entry) (EntryExpr, error) { + k, err := exprInternal(factory, e.GetMapKey()) + if err != nil { + return nil, err + } + v, err := exprInternal(factory, e.GetValue()) + if err != nil { + return nil, err + } + return factory.NewMapEntry(id, k, v, e.GetOptionalEntry()), nil +} + +func exprSelect(factory ExprFactory, id int64, s *exprpb.Expr_Select) (Expr, error) { + op, err := exprInternal(factory, s.GetOperand()) + if err != nil { + return nil, err + } + if s.GetTestOnly() { + return factory.NewPresenceTest(id, op, s.GetField()), nil + } + return factory.NewSelect(id, op, s.GetField()), nil +} + +func exprStruct(factory ExprFactory, id int64, s *exprpb.Expr_CreateStruct) (Expr, error) { + fields := make([]EntryExpr, len(s.GetEntries())) + var err error + for i, field := range s.GetEntries() { + fields[i], err = exprStructField(factory, field.GetId(), field) + if err != nil { + return nil, err + } + } + return factory.NewStruct(id, s.GetMessageName(), fields), nil +} + +func exprStructField(factory ExprFactory, id int64, f *exprpb.Expr_CreateStruct_Entry) (EntryExpr, error) { + v, err := exprInternal(factory, f.GetValue()) + if err != nil { + return nil, err + } + return factory.NewStructField(id, f.GetFieldKey(), v, f.GetOptionalEntry()), nil +} + +// ExprToProto serializes an ast.Expr value to a protobuf Expr representation. +func ExprToProto(e Expr) (*exprpb.Expr, error) { + if e == nil { + return &exprpb.Expr{}, nil + } + switch e.Kind() { + case CallKind: + return protoCall(e.ID(), e.AsCall()) + case ComprehensionKind: + return protoComprehension(e.ID(), e.AsComprehension()) + case IdentKind: + return protoIdent(e.ID(), e.AsIdent()) + case ListKind: + return protoList(e.ID(), e.AsList()) + case LiteralKind: + return protoLiteral(e.ID(), e.AsLiteral()) + case MapKind: + return protoMap(e.ID(), e.AsMap()) + case SelectKind: + return protoSelect(e.ID(), e.AsSelect()) + case StructKind: + return protoStruct(e.ID(), e.AsStruct()) + case UnspecifiedExprKind: + // Handle the case where a macro reference may be getting translated. + // A nested macro 'pointer' is a non-zero expression id with no kind set. + if e.ID() != 0 { + return &exprpb.Expr{Id: e.ID()}, nil + } + return &exprpb.Expr{}, nil + } + return nil, fmt.Errorf("unsupported expr kind: %v", e) +} + +// EntryExprToProto converts an ast.EntryExpr to a protobuf CreateStruct entry +func EntryExprToProto(e EntryExpr) (*exprpb.Expr_CreateStruct_Entry, error) { + switch e.Kind() { + case MapEntryKind: + return protoMapEntry(e.ID(), e.AsMapEntry()) + case StructFieldKind: + return protoStructField(e.ID(), e.AsStructField()) + case UnspecifiedEntryExprKind: + return &exprpb.Expr_CreateStruct_Entry{}, nil + } + return nil, fmt.Errorf("unsupported expr entry kind: %v", e) +} + +func protoCall(id int64, call CallExpr) (*exprpb.Expr, error) { + var err error + var target *exprpb.Expr + if call.IsMemberFunction() { + target, err = ExprToProto(call.Target()) + if err != nil { + return nil, err + } + } + callArgs := call.Args() + args := make([]*exprpb.Expr, len(callArgs)) + for i, a := range callArgs { + args[i], err = ExprToProto(a) + if err != nil { + return nil, err + } + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_CallExpr{ + CallExpr: &exprpb.Expr_Call{ + Function: call.FunctionName(), + Target: target, + Args: args, + }, + }, + }, nil +} + +func protoComprehension(id int64, comp ComprehensionExpr) (*exprpb.Expr, error) { + iterRange, err := ExprToProto(comp.IterRange()) + if err != nil { + return nil, err + } + accuInit, err := ExprToProto(comp.AccuInit()) + if err != nil { + return nil, err + } + loopCond, err := ExprToProto(comp.LoopCondition()) + if err != nil { + return nil, err + } + loopStep, err := ExprToProto(comp.LoopStep()) + if err != nil { + return nil, err + } + result, err := ExprToProto(comp.Result()) + if err != nil { + return nil, err + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_ComprehensionExpr{ + ComprehensionExpr: &exprpb.Expr_Comprehension{ + IterVar: comp.IterVar(), + IterVar2: comp.IterVar2(), + IterRange: iterRange, + AccuVar: comp.AccuVar(), + AccuInit: accuInit, + LoopCondition: loopCond, + LoopStep: loopStep, + Result: result, + }, + }, + }, nil +} + +func protoIdent(id int64, name string) (*exprpb.Expr, error) { + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_IdentExpr{ + IdentExpr: &exprpb.Expr_Ident{ + Name: name, + }, + }, + }, nil +} + +func protoList(id int64, list ListExpr) (*exprpb.Expr, error) { + var err error + elems := make([]*exprpb.Expr, list.Size()) + for i, e := range list.Elements() { + elems[i], err = ExprToProto(e) + if err != nil { + return nil, err + } + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_ListExpr{ + ListExpr: &exprpb.Expr_CreateList{ + Elements: elems, + OptionalIndices: list.OptionalIndices(), + }, + }, + }, nil +} + +func protoLiteral(id int64, val ref.Val) (*exprpb.Expr, error) { + c, err := ValToConstant(val) + if err != nil { + return nil, err + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_ConstExpr{ + ConstExpr: c, + }, + }, nil +} + +func protoMap(id int64, m MapExpr) (*exprpb.Expr, error) { + entries := make([]*exprpb.Expr_CreateStruct_Entry, len(m.Entries())) + var err error + for i, e := range m.Entries() { + entries[i], err = EntryExprToProto(e) + if err != nil { + return nil, err + } + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_StructExpr{ + StructExpr: &exprpb.Expr_CreateStruct{ + Entries: entries, + }, + }, + }, nil +} + +func protoMapEntry(id int64, e MapEntry) (*exprpb.Expr_CreateStruct_Entry, error) { + k, err := ExprToProto(e.Key()) + if err != nil { + return nil, err + } + v, err := ExprToProto(e.Value()) + if err != nil { + return nil, err + } + return &exprpb.Expr_CreateStruct_Entry{ + Id: id, + KeyKind: &exprpb.Expr_CreateStruct_Entry_MapKey{ + MapKey: k, + }, + Value: v, + OptionalEntry: e.IsOptional(), + }, nil +} + +func protoSelect(id int64, s SelectExpr) (*exprpb.Expr, error) { + op, err := ExprToProto(s.Operand()) + if err != nil { + return nil, err + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_SelectExpr{ + SelectExpr: &exprpb.Expr_Select{ + Operand: op, + Field: s.FieldName(), + TestOnly: s.IsTestOnly(), + }, + }, + }, nil +} + +func protoStruct(id int64, s StructExpr) (*exprpb.Expr, error) { + entries := make([]*exprpb.Expr_CreateStruct_Entry, len(s.Fields())) + var err error + for i, e := range s.Fields() { + entries[i], err = EntryExprToProto(e) + if err != nil { + return nil, err + } + } + return &exprpb.Expr{ + Id: id, + ExprKind: &exprpb.Expr_StructExpr{ + StructExpr: &exprpb.Expr_CreateStruct{ + MessageName: s.TypeName(), + Entries: entries, + }, + }, + }, nil +} + +func protoStructField(id int64, f StructField) (*exprpb.Expr_CreateStruct_Entry, error) { + v, err := ExprToProto(f.Value()) + if err != nil { + return nil, err + } + return &exprpb.Expr_CreateStruct_Entry{ + Id: id, + KeyKind: &exprpb.Expr_CreateStruct_Entry_FieldKey{ + FieldKey: f.Name(), + }, + Value: v, + OptionalEntry: f.IsOptional(), + }, nil +} + +// SourceInfoToProto serializes an ast.SourceInfo value to a protobuf SourceInfo object. +func SourceInfoToProto(info *SourceInfo) (*exprpb.SourceInfo, error) { + if info == nil { + return &exprpb.SourceInfo{}, nil + } + sourceInfo := &exprpb.SourceInfo{ + SyntaxVersion: info.SyntaxVersion(), + Location: info.Description(), + LineOffsets: info.LineOffsets(), + Positions: make(map[int64]int32, len(info.OffsetRanges())), + MacroCalls: make(map[int64]*exprpb.Expr, len(info.MacroCalls())), + } + for id, offset := range info.OffsetRanges() { + sourceInfo.Positions[id] = offset.Start + } + for id, e := range info.MacroCalls() { + call, err := ExprToProto(e) + if err != nil { + return nil, err + } + sourceInfo.MacroCalls[id] = call + } + return sourceInfo, nil +} + +// ProtoToSourceInfo deserializes the protobuf into a native SourceInfo value. +func ProtoToSourceInfo(info *exprpb.SourceInfo) (*SourceInfo, error) { + sourceInfo := &SourceInfo{ + syntax: info.GetSyntaxVersion(), + desc: info.GetLocation(), + lines: info.GetLineOffsets(), + offsetRanges: make(map[int64]OffsetRange, len(info.GetPositions())), + macroCalls: make(map[int64]Expr, len(info.GetMacroCalls())), + } + for id, offset := range info.GetPositions() { + sourceInfo.SetOffsetRange(id, OffsetRange{Start: offset, Stop: offset}) + } + for id, e := range info.GetMacroCalls() { + call, err := ProtoToExpr(e) + if err != nil { + return nil, err + } + sourceInfo.SetMacroCall(id, call) + } + return sourceInfo, nil +} + +// ReferenceInfoToProto converts a ReferenceInfo instance to a protobuf Reference suitable for serialization. +func ReferenceInfoToProto(info *ReferenceInfo) (*exprpb.Reference, error) { + c, err := ValToConstant(info.Value) + if err != nil { + return nil, err + } + return &exprpb.Reference{ + Name: info.Name, + OverloadId: info.OverloadIDs, + Value: c, + }, nil +} + +// ProtoToReferenceInfo converts a protobuf Reference into a CEL-native ReferenceInfo instance. +func ProtoToReferenceInfo(ref *exprpb.Reference) (*ReferenceInfo, error) { + v, err := ConstantToVal(ref.GetValue()) + if err != nil { + return nil, err + } + return &ReferenceInfo{ + Name: ref.GetName(), + OverloadIDs: ref.GetOverloadId(), + Value: v, + }, nil +} + +// ValToConstant converts a CEL-native ref.Val to a protobuf Constant. +// +// Only simple scalar types are supported by this method. +func ValToConstant(v ref.Val) (*exprpb.Constant, error) { + if v == nil { + return nil, nil + } + switch v.Type() { + case types.BoolType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_BoolValue{BoolValue: v.Value().(bool)}}, nil + case types.BytesType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_BytesValue{BytesValue: v.Value().([]byte)}}, nil + case types.DoubleType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_DoubleValue{DoubleValue: v.Value().(float64)}}, nil + case types.IntType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_Int64Value{Int64Value: v.Value().(int64)}}, nil + case types.NullType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_NullValue{NullValue: structpb.NullValue_NULL_VALUE}}, nil + case types.StringType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_StringValue{StringValue: v.Value().(string)}}, nil + case types.UintType: + return &exprpb.Constant{ConstantKind: &exprpb.Constant_Uint64Value{Uint64Value: v.Value().(uint64)}}, nil + } + return nil, fmt.Errorf("unsupported constant kind: %v", v.Type()) +} + +// ConstantToVal converts a protobuf Constant to a CEL-native ref.Val. +func ConstantToVal(c *exprpb.Constant) (ref.Val, error) { + return AlphaProtoConstantAsVal(c) +} + +// AlphaProtoConstantAsVal converts a v1alpha1.Constant protobuf to a CEL-native ref.Val. +func AlphaProtoConstantAsVal(c *exprpb.Constant) (ref.Val, error) { + if c == nil { + return nil, nil + } + canonical := &celpb.Constant{} + if err := convertProto(c, canonical); err != nil { + return nil, err + } + return ProtoConstantAsVal(canonical) +} + +// ProtoConstantAsVal converts a canonical celpb.Constant protobuf to a CEL-native ref.Val. +func ProtoConstantAsVal(c *celpb.Constant) (ref.Val, error) { + switch c.GetConstantKind().(type) { + case *celpb.Constant_BoolValue: + return types.Bool(c.GetBoolValue()), nil + case *celpb.Constant_BytesValue: + return types.Bytes(c.GetBytesValue()), nil + case *celpb.Constant_DoubleValue: + return types.Double(c.GetDoubleValue()), nil + case *celpb.Constant_Int64Value: + return types.Int(c.GetInt64Value()), nil + case *celpb.Constant_NullValue: + return types.NullValue, nil + case *celpb.Constant_StringValue: + return types.String(c.GetStringValue()), nil + case *celpb.Constant_Uint64Value: + return types.Uint(c.GetUint64Value()), nil + } + return nil, fmt.Errorf("unsupported constant kind: %v", c.GetConstantKind()) +} + +func convertProto(src, dst proto.Message) error { + pb, err := proto.Marshal(src) + if err != nil { + return err + } + err = proto.Unmarshal(pb, dst) + return err +} diff --git a/vendor/github.com/google/cel-go/common/ast/expr.go b/vendor/github.com/google/cel-go/common/ast/expr.go new file mode 100644 index 0000000000..9f55cb3b9f --- /dev/null +++ b/vendor/github.com/google/cel-go/common/ast/expr.go @@ -0,0 +1,884 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package ast + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// ExprKind represents the expression node kind. +type ExprKind int + +const ( + // UnspecifiedExprKind represents an unset expression with no specified properties. + UnspecifiedExprKind ExprKind = iota + + // CallKind represents a function call. + CallKind + + // ComprehensionKind represents a comprehension expression generated by a macro. + ComprehensionKind + + // IdentKind represents a simple variable, constant, or type identifier. + IdentKind + + // ListKind represents a list literal expression. + ListKind + + // LiteralKind represents a primitive scalar literal. + LiteralKind + + // MapKind represents a map literal expression. + MapKind + + // SelectKind represents a field selection expression. + SelectKind + + // StructKind represents a struct literal expression. + StructKind +) + +// Expr represents the base expression node in a CEL abstract syntax tree. +// +// Depending on the `Kind()` value, the Expr may be converted to a concrete expression types +// as indicated by the `As` methods. +type Expr interface { + // ID of the expression as it appears in the AST + ID() int64 + + // Kind of the expression node. See ExprKind for the valid enum values. + Kind() ExprKind + + // AsCall adapts the expr into a CallExpr + // + // The Kind() must be equal to a CallKind for the conversion to be well-defined. + AsCall() CallExpr + + // AsComprehension adapts the expr into a ComprehensionExpr. + // + // The Kind() must be equal to a ComprehensionKind for the conversion to be well-defined. + AsComprehension() ComprehensionExpr + + // AsIdent adapts the expr into an identifier string. + // + // The Kind() must be equal to an IdentKind for the conversion to be well-defined. + AsIdent() string + + // AsLiteral adapts the expr into a constant ref.Val. + // + // The Kind() must be equal to a LiteralKind for the conversion to be well-defined. + AsLiteral() ref.Val + + // AsList adapts the expr into a ListExpr. + // + // The Kind() must be equal to a ListKind for the conversion to be well-defined. + AsList() ListExpr + + // AsMap adapts the expr into a MapExpr. + // + // The Kind() must be equal to a MapKind for the conversion to be well-defined. + AsMap() MapExpr + + // AsSelect adapts the expr into a SelectExpr. + // + // The Kind() must be equal to a SelectKind for the conversion to be well-defined. + AsSelect() SelectExpr + + // AsStruct adapts the expr into a StructExpr. + // + // The Kind() must be equal to a StructKind for the conversion to be well-defined. + AsStruct() StructExpr + + // RenumberIDs performs an in-place update of the expression and all of its descendents numeric ids. + RenumberIDs(IDGenerator) + + // SetKindCase replaces the contents of the current expression with the contents of the other. + // + // The SetKindCase takes ownership of any expression instances references within the input Expr. + // A shallow copy is made of the Expr value itself, but not a deep one. + // + // This method should only be used during AST rewrites using temporary Expr values. + SetKindCase(Expr) + + // isExpr is a marker interface. + isExpr() +} + +// EntryExprKind represents the possible EntryExpr kinds. +type EntryExprKind int + +const ( + // UnspecifiedEntryExprKind indicates that the entry expr is not set. + UnspecifiedEntryExprKind EntryExprKind = iota + + // MapEntryKind indicates that the entry is a MapEntry type with key and value expressions. + MapEntryKind + + // StructFieldKind indicates that the entry is a StructField with a field name and initializer + // expression. + StructFieldKind +) + +// EntryExpr represents the base entry expression in a CEL map or struct literal. +type EntryExpr interface { + // ID of the entry as it appears in the AST. + ID() int64 + + // Kind of the entry expression node. See EntryExprKind for valid enum values. + Kind() EntryExprKind + + // AsMapEntry casts the EntryExpr to a MapEntry. + // + // The Kind() must be equal to MapEntryKind for the conversion to be well-defined. + AsMapEntry() MapEntry + + // AsStructField casts the EntryExpr to a StructField + // + // The Kind() must be equal to StructFieldKind for the conversion to be well-defined. + AsStructField() StructField + + // RenumberIDs performs an in-place update of the expression and all of its descendents numeric ids. + RenumberIDs(IDGenerator) + + isEntryExpr() +} + +// IDGenerator produces unique ids suitable for tagging expression nodes +type IDGenerator func(originalID int64) int64 + +// CallExpr defines an interface for inspecting a function call and its arguments. +type CallExpr interface { + // FunctionName returns the name of the function. + FunctionName() string + + // IsMemberFunction returns whether the call has a non-nil target indicating it is a member function + IsMemberFunction() bool + + // Target returns the target of the expression if one is present. + Target() Expr + + // Args returns the list of call arguments, excluding the target. + Args() []Expr + + // marker interface method + isExpr() +} + +// ListExpr defines an interface for inspecting a list literal expression. +type ListExpr interface { + // Elements returns the list elements as navigable expressions. + Elements() []Expr + + // OptionalIndicies returns the list of optional indices in the list literal. + OptionalIndices() []int32 + + // IsOptional indicates whether the given element index is optional. + IsOptional(int32) bool + + // Size returns the number of elements in the list. + Size() int + + // marker interface method + isExpr() +} + +// SelectExpr defines an interface for inspecting a select expression. +type SelectExpr interface { + // Operand returns the selection operand expression. + Operand() Expr + + // FieldName returns the field name being selected from the operand. + FieldName() string + + // IsTestOnly indicates whether the select expression is a presence test generated by a macro. + IsTestOnly() bool + + // marker interface method + isExpr() +} + +// MapExpr defines an interface for inspecting a map expression. +type MapExpr interface { + // Entries returns the map key value pairs as EntryExpr values. + Entries() []EntryExpr + + // Size returns the number of entries in the map. + Size() int + + // marker interface method + isExpr() +} + +// MapEntry defines an interface for inspecting a map entry. +type MapEntry interface { + // Key returns the map entry key expression. + Key() Expr + + // Value returns the map entry value expression. + Value() Expr + + // IsOptional returns whether the entry is optional. + IsOptional() bool + + // marker interface method + isEntryExpr() +} + +// StructExpr defines an interfaces for inspecting a struct and its field initializers. +type StructExpr interface { + // TypeName returns the struct type name. + TypeName() string + + // Fields returns the set of field initializers in the struct expression as EntryExpr values. + Fields() []EntryExpr + + // marker interface method + isExpr() +} + +// StructField defines an interface for inspecting a struct field initialization. +type StructField interface { + // Name returns the name of the field. + Name() string + + // Value returns the field initialization expression. + Value() Expr + + // IsOptional returns whether the field is optional. + IsOptional() bool + + // marker interface method + isEntryExpr() +} + +// ComprehensionExpr defines an interface for inspecting a comprehension expression. +type ComprehensionExpr interface { + // IterRange returns the iteration range expression. + IterRange() Expr + + // IterVar returns the iteration variable name. + // + // For one-variable comprehensions, the iter var refers to the element value + // when iterating over a list, or the map key when iterating over a map. + // + // For two-variable comprehneions, the iter var refers to the list index or the + // map key. + IterVar() string + + // IterVar2 returns the second iteration variable name. + // + // When the value is non-empty, the comprehension is a two-variable comprehension. + IterVar2() string + + // HasIterVar2 returns true if the second iteration variable is non-empty. + HasIterVar2() bool + + // AccuVar returns the accumulation variable name. + AccuVar() string + + // AccuInit returns the accumulation variable initialization expression. + AccuInit() Expr + + // LoopCondition returns the loop condition expression. + LoopCondition() Expr + + // LoopStep returns the loop step expression. + LoopStep() Expr + + // Result returns the comprehension result expression. + Result() Expr + + // marker interface method + isExpr() +} + +var _ Expr = &expr{} + +type expr struct { + id int64 + exprKindCase +} + +type exprKindCase interface { + Kind() ExprKind + + renumberIDs(IDGenerator) + + isExpr() +} + +func (e *expr) ID() int64 { + if e == nil { + return 0 + } + return e.id +} + +func (e *expr) Kind() ExprKind { + if e == nil || e.exprKindCase == nil { + return UnspecifiedExprKind + } + return e.exprKindCase.Kind() +} + +func (e *expr) AsCall() CallExpr { + if e.Kind() != CallKind { + return nilCall + } + return e.exprKindCase.(CallExpr) +} + +func (e *expr) AsComprehension() ComprehensionExpr { + if e.Kind() != ComprehensionKind { + return nilCompre + } + return e.exprKindCase.(ComprehensionExpr) +} + +func (e *expr) AsIdent() string { + if e.Kind() != IdentKind { + return "" + } + return string(e.exprKindCase.(baseIdentExpr)) +} + +func (e *expr) AsLiteral() ref.Val { + if e.Kind() != LiteralKind { + return nil + } + return e.exprKindCase.(*baseLiteral).Val +} + +func (e *expr) AsList() ListExpr { + if e.Kind() != ListKind { + return nilList + } + return e.exprKindCase.(ListExpr) +} + +func (e *expr) AsMap() MapExpr { + if e.Kind() != MapKind { + return nilMap + } + return e.exprKindCase.(MapExpr) +} + +func (e *expr) AsSelect() SelectExpr { + if e.Kind() != SelectKind { + return nilSel + } + return e.exprKindCase.(SelectExpr) +} + +func (e *expr) AsStruct() StructExpr { + if e.Kind() != StructKind { + return nilStruct + } + return e.exprKindCase.(StructExpr) +} + +func (e *expr) SetKindCase(other Expr) { + if e == nil { + return + } + if other == nil { + e.exprKindCase = nil + return + } + switch other.Kind() { + case CallKind: + c := other.AsCall() + e.exprKindCase = &baseCallExpr{ + function: c.FunctionName(), + target: c.Target(), + args: c.Args(), + isMember: c.IsMemberFunction(), + } + case ComprehensionKind: + c := other.AsComprehension() + e.exprKindCase = &baseComprehensionExpr{ + iterRange: c.IterRange(), + iterVar: c.IterVar(), + iterVar2: c.IterVar2(), + accuVar: c.AccuVar(), + accuInit: c.AccuInit(), + loopCond: c.LoopCondition(), + loopStep: c.LoopStep(), + result: c.Result(), + } + case IdentKind: + e.exprKindCase = baseIdentExpr(other.AsIdent()) + case ListKind: + l := other.AsList() + optIndexMap := make(map[int32]struct{}, len(l.OptionalIndices())) + for _, idx := range l.OptionalIndices() { + optIndexMap[idx] = struct{}{} + } + e.exprKindCase = &baseListExpr{ + elements: l.Elements(), + optIndices: l.OptionalIndices(), + optIndexMap: optIndexMap, + } + case LiteralKind: + e.exprKindCase = &baseLiteral{Val: other.AsLiteral()} + case MapKind: + e.exprKindCase = &baseMapExpr{ + entries: other.AsMap().Entries(), + } + case SelectKind: + s := other.AsSelect() + e.exprKindCase = &baseSelectExpr{ + operand: s.Operand(), + field: s.FieldName(), + testOnly: s.IsTestOnly(), + } + case StructKind: + s := other.AsStruct() + e.exprKindCase = &baseStructExpr{ + typeName: s.TypeName(), + fields: s.Fields(), + } + case UnspecifiedExprKind: + e.exprKindCase = nil + } +} + +func (e *expr) RenumberIDs(idGen IDGenerator) { + if e == nil { + return + } + e.id = idGen(e.id) + if e.exprKindCase != nil { + e.exprKindCase.renumberIDs(idGen) + } +} + +type baseCallExpr struct { + function string + target Expr + args []Expr + isMember bool +} + +func (*baseCallExpr) Kind() ExprKind { + return CallKind +} + +func (e *baseCallExpr) FunctionName() string { + if e == nil { + return "" + } + return e.function +} + +func (e *baseCallExpr) IsMemberFunction() bool { + if e == nil { + return false + } + return e.isMember +} + +func (e *baseCallExpr) Target() Expr { + if e == nil || !e.IsMemberFunction() { + return nilExpr + } + return e.target +} + +func (e *baseCallExpr) Args() []Expr { + if e == nil { + return []Expr{} + } + return e.args +} + +func (e *baseCallExpr) renumberIDs(idGen IDGenerator) { + if e.IsMemberFunction() { + e.Target().RenumberIDs(idGen) + } + for _, arg := range e.Args() { + arg.RenumberIDs(idGen) + } +} + +func (*baseCallExpr) isExpr() {} + +var _ ComprehensionExpr = &baseComprehensionExpr{} + +type baseComprehensionExpr struct { + iterRange Expr + iterVar string + iterVar2 string + accuVar string + accuInit Expr + loopCond Expr + loopStep Expr + result Expr +} + +func (*baseComprehensionExpr) Kind() ExprKind { + return ComprehensionKind +} + +func (e *baseComprehensionExpr) IterRange() Expr { + if e == nil { + return nilExpr + } + return e.iterRange +} + +func (e *baseComprehensionExpr) IterVar() string { + return e.iterVar +} + +func (e *baseComprehensionExpr) IterVar2() string { + return e.iterVar2 +} + +func (e *baseComprehensionExpr) HasIterVar2() bool { + return e.iterVar2 != "" +} + +func (e *baseComprehensionExpr) AccuVar() string { + return e.accuVar +} + +func (e *baseComprehensionExpr) AccuInit() Expr { + if e == nil { + return nilExpr + } + return e.accuInit +} + +func (e *baseComprehensionExpr) LoopCondition() Expr { + if e == nil { + return nilExpr + } + return e.loopCond +} + +func (e *baseComprehensionExpr) LoopStep() Expr { + if e == nil { + return nilExpr + } + return e.loopStep +} + +func (e *baseComprehensionExpr) Result() Expr { + if e == nil { + return nilExpr + } + return e.result +} + +func (e *baseComprehensionExpr) renumberIDs(idGen IDGenerator) { + e.IterRange().RenumberIDs(idGen) + e.AccuInit().RenumberIDs(idGen) + e.LoopCondition().RenumberIDs(idGen) + e.LoopStep().RenumberIDs(idGen) + e.Result().RenumberIDs(idGen) +} + +func (*baseComprehensionExpr) isExpr() {} + +var _ exprKindCase = baseIdentExpr("") + +type baseIdentExpr string + +func (baseIdentExpr) Kind() ExprKind { + return IdentKind +} + +func (e baseIdentExpr) renumberIDs(IDGenerator) {} + +func (baseIdentExpr) isExpr() {} + +var _ exprKindCase = &baseLiteral{} +var _ ref.Val = &baseLiteral{} + +type baseLiteral struct { + ref.Val +} + +func (*baseLiteral) Kind() ExprKind { + return LiteralKind +} + +func (l *baseLiteral) renumberIDs(IDGenerator) {} + +func (*baseLiteral) isExpr() {} + +var _ ListExpr = &baseListExpr{} + +type baseListExpr struct { + elements []Expr + optIndices []int32 + optIndexMap map[int32]struct{} +} + +func (*baseListExpr) Kind() ExprKind { + return ListKind +} + +func (e *baseListExpr) Elements() []Expr { + if e == nil { + return []Expr{} + } + return e.elements +} + +func (e *baseListExpr) IsOptional(index int32) bool { + _, found := e.optIndexMap[index] + return found +} + +func (e *baseListExpr) OptionalIndices() []int32 { + if e == nil { + return []int32{} + } + return e.optIndices +} + +func (e *baseListExpr) Size() int { + return len(e.Elements()) +} + +func (e *baseListExpr) renumberIDs(idGen IDGenerator) { + for _, elem := range e.Elements() { + elem.RenumberIDs(idGen) + } +} + +func (*baseListExpr) isExpr() {} + +type baseMapExpr struct { + entries []EntryExpr +} + +func (*baseMapExpr) Kind() ExprKind { + return MapKind +} + +func (e *baseMapExpr) Entries() []EntryExpr { + if e == nil { + return []EntryExpr{} + } + return e.entries +} + +func (e *baseMapExpr) Size() int { + return len(e.Entries()) +} + +func (e *baseMapExpr) renumberIDs(idGen IDGenerator) { + for _, entry := range e.Entries() { + entry.RenumberIDs(idGen) + } +} + +func (*baseMapExpr) isExpr() {} + +type baseSelectExpr struct { + operand Expr + field string + testOnly bool +} + +func (*baseSelectExpr) Kind() ExprKind { + return SelectKind +} + +func (e *baseSelectExpr) Operand() Expr { + if e == nil || e.operand == nil { + return nilExpr + } + return e.operand +} + +func (e *baseSelectExpr) FieldName() string { + if e == nil { + return "" + } + return e.field +} + +func (e *baseSelectExpr) IsTestOnly() bool { + if e == nil { + return false + } + return e.testOnly +} + +func (e *baseSelectExpr) renumberIDs(idGen IDGenerator) { + e.Operand().RenumberIDs(idGen) +} + +func (*baseSelectExpr) isExpr() {} + +type baseStructExpr struct { + typeName string + fields []EntryExpr +} + +func (*baseStructExpr) Kind() ExprKind { + return StructKind +} + +func (e *baseStructExpr) TypeName() string { + if e == nil { + return "" + } + return e.typeName +} + +func (e *baseStructExpr) Fields() []EntryExpr { + if e == nil { + return []EntryExpr{} + } + return e.fields +} + +func (e *baseStructExpr) renumberIDs(idGen IDGenerator) { + for _, f := range e.Fields() { + f.RenumberIDs(idGen) + } +} + +func (*baseStructExpr) isExpr() {} + +type entryExprKindCase interface { + Kind() EntryExprKind + + renumberIDs(IDGenerator) + + isEntryExpr() +} + +var _ EntryExpr = &entryExpr{} + +type entryExpr struct { + id int64 + entryExprKindCase +} + +func (e *entryExpr) ID() int64 { + return e.id +} + +func (e *entryExpr) AsMapEntry() MapEntry { + if e.Kind() != MapEntryKind { + return nilMapEntry + } + return e.entryExprKindCase.(MapEntry) +} + +func (e *entryExpr) AsStructField() StructField { + if e.Kind() != StructFieldKind { + return nilStructField + } + return e.entryExprKindCase.(StructField) +} + +func (e *entryExpr) RenumberIDs(idGen IDGenerator) { + e.id = idGen(e.id) + e.entryExprKindCase.renumberIDs(idGen) +} + +type baseMapEntry struct { + key Expr + value Expr + isOptional bool +} + +func (e *baseMapEntry) Kind() EntryExprKind { + return MapEntryKind +} + +func (e *baseMapEntry) Key() Expr { + if e == nil { + return nilExpr + } + return e.key +} + +func (e *baseMapEntry) Value() Expr { + if e == nil { + return nilExpr + } + return e.value +} + +func (e *baseMapEntry) IsOptional() bool { + if e == nil { + return false + } + return e.isOptional +} + +func (e *baseMapEntry) renumberIDs(idGen IDGenerator) { + e.Key().RenumberIDs(idGen) + e.Value().RenumberIDs(idGen) +} + +func (*baseMapEntry) isEntryExpr() {} + +type baseStructField struct { + field string + value Expr + isOptional bool +} + +func (f *baseStructField) Kind() EntryExprKind { + return StructFieldKind +} + +func (f *baseStructField) Name() string { + if f == nil { + return "" + } + return f.field +} + +func (f *baseStructField) Value() Expr { + if f == nil { + return nilExpr + } + return f.value +} + +func (f *baseStructField) IsOptional() bool { + if f == nil { + return false + } + return f.isOptional +} + +func (f *baseStructField) renumberIDs(idGen IDGenerator) { + f.Value().RenumberIDs(idGen) +} + +func (*baseStructField) isEntryExpr() {} + +var ( + nilExpr *expr = nil + nilCall *baseCallExpr = nil + nilCompre *baseComprehensionExpr = nil + nilList *baseListExpr = nil + nilMap *baseMapExpr = nil + nilMapEntry *baseMapEntry = nil + nilSel *baseSelectExpr = nil + nilStruct *baseStructExpr = nil + nilStructField *baseStructField = nil +) diff --git a/vendor/github.com/google/cel-go/common/ast/factory.go b/vendor/github.com/google/cel-go/common/ast/factory.go new file mode 100644 index 0000000000..d4dcde4d94 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/ast/factory.go @@ -0,0 +1,332 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package ast + +import "github.com/google/cel-go/common/types/ref" + +// ExprFactory interfaces defines a set of methods necessary for building native expression values. +type ExprFactory interface { + // CopyExpr creates a deep copy of the input Expr value. + CopyExpr(Expr) Expr + + // CopyEntryExpr creates a deep copy of the input EntryExpr value. + CopyEntryExpr(EntryExpr) EntryExpr + + // NewCall creates an Expr value representing a global function call. + NewCall(id int64, function string, args ...Expr) Expr + + // NewComprehension creates an Expr value representing a one-variable comprehension over a value range. + NewComprehension(id int64, iterRange Expr, iterVar, accuVar string, accuInit, loopCondition, loopStep, result Expr) Expr + + // NewComprehensionTwoVar creates an Expr value representing a two-variable comprehension over a value range. + NewComprehensionTwoVar(id int64, iterRange Expr, iterVar, iterVar2, accuVar string, accuInit, loopCondition, loopStep, result Expr) Expr + + // NewMemberCall creates an Expr value representing a member function call. + NewMemberCall(id int64, function string, receiver Expr, args ...Expr) Expr + + // NewIdent creates an Expr value representing an identifier. + NewIdent(id int64, name string) Expr + + // NewAccuIdent creates an Expr value representing an accumulator identifier within a + // comprehension. + NewAccuIdent(id int64) Expr + + // AccuIdentName reports the name of the accumulator variable to be used within a comprehension. + AccuIdentName() string + + // NewLiteral creates an Expr value representing a literal value, such as a string or integer. + NewLiteral(id int64, value ref.Val) Expr + + // NewList creates an Expr value representing a list literal expression with optional indices. + // + // Optional indices will typically be empty unless the CEL optional types are enabled. + NewList(id int64, elems []Expr, optIndices []int32) Expr + + // NewMap creates an Expr value representing a map literal expression + NewMap(id int64, entries []EntryExpr) Expr + + // NewMapEntry creates a MapEntry with a given key, value, and a flag indicating whether + // the key is optionally set. + NewMapEntry(id int64, key, value Expr, isOptional bool) EntryExpr + + // NewPresenceTest creates an Expr representing a field presence test on an operand expression. + NewPresenceTest(id int64, operand Expr, field string) Expr + + // NewSelect creates an Expr representing a field selection on an operand expression. + NewSelect(id int64, operand Expr, field string) Expr + + // NewStruct creates an Expr value representing a struct literal with a given type name and a + // set of field initializers. + NewStruct(id int64, typeName string, fields []EntryExpr) Expr + + // NewStructField creates a StructField with a given field name, value, and a flag indicating + // whether the field is optionally set. + NewStructField(id int64, field string, value Expr, isOptional bool) EntryExpr + + // NewUnspecifiedExpr creates an empty expression node. + NewUnspecifiedExpr(id int64) Expr + + isExprFactory() +} + +type baseExprFactory struct { + accumulatorName string +} + +// NewExprFactory creates an ExprFactory instance. +func NewExprFactory() ExprFactory { + return &baseExprFactory{ + "@result", + } +} + +// NewExprFactoryWithAccumulator creates an ExprFactory instance with a custom +// accumulator identifier name. +func NewExprFactoryWithAccumulator(id string) ExprFactory { + return &baseExprFactory{ + id, + } +} + +func (fac *baseExprFactory) NewCall(id int64, function string, args ...Expr) Expr { + if len(args) == 0 { + args = []Expr{} + } + return fac.newExpr( + id, + &baseCallExpr{ + function: function, + target: nilExpr, + args: args, + isMember: false, + }) +} + +func (fac *baseExprFactory) NewMemberCall(id int64, function string, target Expr, args ...Expr) Expr { + if len(args) == 0 { + args = []Expr{} + } + return fac.newExpr( + id, + &baseCallExpr{ + function: function, + target: target, + args: args, + isMember: true, + }) +} + +func (fac *baseExprFactory) NewComprehension(id int64, iterRange Expr, iterVar, accuVar string, accuInit, loopCond, loopStep, result Expr) Expr { + // Set the iter_var2 to empty string to indicate the second variable is omitted + return fac.NewComprehensionTwoVar(id, iterRange, iterVar, "", accuVar, accuInit, loopCond, loopStep, result) +} + +func (fac *baseExprFactory) NewComprehensionTwoVar(id int64, iterRange Expr, iterVar, iterVar2, accuVar string, accuInit, loopCond, loopStep, result Expr) Expr { + return fac.newExpr( + id, + &baseComprehensionExpr{ + iterRange: iterRange, + iterVar: iterVar, + iterVar2: iterVar2, + accuVar: accuVar, + accuInit: accuInit, + loopCond: loopCond, + loopStep: loopStep, + result: result, + }) +} + +func (fac *baseExprFactory) NewIdent(id int64, name string) Expr { + return fac.newExpr(id, baseIdentExpr(name)) +} + +func (fac *baseExprFactory) NewAccuIdent(id int64) Expr { + return fac.NewIdent(id, fac.AccuIdentName()) +} + +func (fac *baseExprFactory) AccuIdentName() string { + return fac.accumulatorName +} + +func (fac *baseExprFactory) NewLiteral(id int64, value ref.Val) Expr { + return fac.newExpr(id, &baseLiteral{Val: value}) +} + +func (fac *baseExprFactory) NewList(id int64, elems []Expr, optIndices []int32) Expr { + optIndexMap := make(map[int32]struct{}, len(optIndices)) + for _, idx := range optIndices { + optIndexMap[idx] = struct{}{} + } + return fac.newExpr(id, + &baseListExpr{ + elements: elems, + optIndices: optIndices, + optIndexMap: optIndexMap, + }) +} + +func (fac *baseExprFactory) NewMap(id int64, entries []EntryExpr) Expr { + return fac.newExpr(id, &baseMapExpr{entries: entries}) +} + +func (fac *baseExprFactory) NewMapEntry(id int64, key, value Expr, isOptional bool) EntryExpr { + return fac.newEntryExpr( + id, + &baseMapEntry{ + key: key, + value: value, + isOptional: isOptional, + }) +} + +func (fac *baseExprFactory) NewPresenceTest(id int64, operand Expr, field string) Expr { + return fac.newExpr( + id, + &baseSelectExpr{ + operand: operand, + field: field, + testOnly: true, + }) +} + +func (fac *baseExprFactory) NewSelect(id int64, operand Expr, field string) Expr { + return fac.newExpr( + id, + &baseSelectExpr{ + operand: operand, + field: field, + }) +} + +func (fac *baseExprFactory) NewStruct(id int64, typeName string, fields []EntryExpr) Expr { + return fac.newExpr( + id, + &baseStructExpr{ + typeName: typeName, + fields: fields, + }) +} + +func (fac *baseExprFactory) NewStructField(id int64, field string, value Expr, isOptional bool) EntryExpr { + return fac.newEntryExpr( + id, + &baseStructField{ + field: field, + value: value, + isOptional: isOptional, + }) +} + +func (fac *baseExprFactory) NewUnspecifiedExpr(id int64) Expr { + return fac.newExpr(id, nil) +} + +func (fac *baseExprFactory) CopyExpr(e Expr) Expr { + // unwrap navigable expressions to avoid unnecessary allocations during copying. + if nav, ok := e.(*navigableExprImpl); ok { + e = nav.Expr + } + switch e.Kind() { + case CallKind: + c := e.AsCall() + argsCopy := make([]Expr, len(c.Args())) + for i, arg := range c.Args() { + argsCopy[i] = fac.CopyExpr(arg) + } + if !c.IsMemberFunction() { + return fac.NewCall(e.ID(), c.FunctionName(), argsCopy...) + } + return fac.NewMemberCall(e.ID(), c.FunctionName(), fac.CopyExpr(c.Target()), argsCopy...) + case ComprehensionKind: + compre := e.AsComprehension() + return fac.NewComprehensionTwoVar(e.ID(), + fac.CopyExpr(compre.IterRange()), + compre.IterVar(), + compre.IterVar2(), + compre.AccuVar(), + fac.CopyExpr(compre.AccuInit()), + fac.CopyExpr(compre.LoopCondition()), + fac.CopyExpr(compre.LoopStep()), + fac.CopyExpr(compre.Result())) + case IdentKind: + return fac.NewIdent(e.ID(), e.AsIdent()) + case ListKind: + l := e.AsList() + elemsCopy := make([]Expr, l.Size()) + for i, elem := range l.Elements() { + elemsCopy[i] = fac.CopyExpr(elem) + } + return fac.NewList(e.ID(), elemsCopy, l.OptionalIndices()) + case LiteralKind: + return fac.NewLiteral(e.ID(), e.AsLiteral()) + case MapKind: + m := e.AsMap() + entriesCopy := make([]EntryExpr, m.Size()) + for i, entry := range m.Entries() { + entriesCopy[i] = fac.CopyEntryExpr(entry) + } + return fac.NewMap(e.ID(), entriesCopy) + case SelectKind: + s := e.AsSelect() + if s.IsTestOnly() { + return fac.NewPresenceTest(e.ID(), fac.CopyExpr(s.Operand()), s.FieldName()) + } + return fac.NewSelect(e.ID(), fac.CopyExpr(s.Operand()), s.FieldName()) + case StructKind: + s := e.AsStruct() + fieldsCopy := make([]EntryExpr, len(s.Fields())) + for i, field := range s.Fields() { + fieldsCopy[i] = fac.CopyEntryExpr(field) + } + return fac.NewStruct(e.ID(), s.TypeName(), fieldsCopy) + default: + return fac.NewUnspecifiedExpr(e.ID()) + } +} + +func (fac *baseExprFactory) CopyEntryExpr(e EntryExpr) EntryExpr { + switch e.Kind() { + case MapEntryKind: + entry := e.AsMapEntry() + return fac.NewMapEntry(e.ID(), + fac.CopyExpr(entry.Key()), fac.CopyExpr(entry.Value()), entry.IsOptional()) + case StructFieldKind: + field := e.AsStructField() + return fac.NewStructField(e.ID(), + field.Name(), fac.CopyExpr(field.Value()), field.IsOptional()) + default: + return fac.newEntryExpr(e.ID(), nil) + } +} + +func (*baseExprFactory) isExprFactory() {} + +func (fac *baseExprFactory) newExpr(id int64, e exprKindCase) Expr { + return &expr{ + id: id, + exprKindCase: e, + } +} + +func (fac *baseExprFactory) newEntryExpr(id int64, e entryExprKindCase) EntryExpr { + return &entryExpr{ + id: id, + entryExprKindCase: e, + } +} + +var ( + defaultFactory = &baseExprFactory{} +) diff --git a/vendor/github.com/google/cel-go/common/ast/navigable.go b/vendor/github.com/google/cel-go/common/ast/navigable.go new file mode 100644 index 0000000000..13e5777b50 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/ast/navigable.go @@ -0,0 +1,665 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package ast + +import ( + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// NavigableExpr represents the base navigable expression value with methods to inspect the +// parent and child expressions. +type NavigableExpr interface { + Expr + + // Type of the expression. + // + // If the expression is type-checked, the type check metadata is returned. If the expression + // has not been type-checked, the types.DynType value is returned. + Type() *types.Type + + // Parent returns the parent expression node, if one exists. + Parent() (NavigableExpr, bool) + + // Children returns a list of child expression nodes. + Children() []NavigableExpr + + // Depth indicates the depth in the expression tree. + // + // The root expression has depth 0. + Depth() int +} + +// NavigateAST converts an AST to a NavigableExpr +func NavigateAST(ast *AST) NavigableExpr { + return NavigateExpr(ast, ast.Expr()) +} + +// NavigateExpr creates a NavigableExpr whose type information is backed by the input AST. +// +// If the expression is already a NavigableExpr, the parent and depth information will be +// propagated on the new NavigableExpr value; otherwise, the expr value will be treated +// as though it is the root of the expression graph with a depth of 0. +func NavigateExpr(ast *AST, expr Expr) NavigableExpr { + depth := 0 + var parent NavigableExpr = nil + if nav, ok := expr.(NavigableExpr); ok { + depth = nav.Depth() + parent, _ = nav.Parent() + } + return newNavigableExpr(ast, parent, expr, depth) +} + +// ExprMatcher takes a NavigableExpr in and indicates whether the value is a match. +// +// This function type should be use with the `Match` and `MatchList` calls. +type ExprMatcher func(NavigableExpr) bool + +// ConstantValueMatcher returns an ExprMatcher which will return true if the input NavigableExpr +// is comprised of all constant values, such as a simple literal or even list and map literal. +func ConstantValueMatcher() ExprMatcher { + return matchIsConstantValue +} + +// KindMatcher returns an ExprMatcher which will return true if the input NavigableExpr.Kind() matches +// the specified `kind`. +func KindMatcher(kind ExprKind) ExprMatcher { + return func(e NavigableExpr) bool { + return e.Kind() == kind + } +} + +// FunctionMatcher returns an ExprMatcher which will match NavigableExpr nodes of CallKind type whose +// function name is equal to `funcName`. +func FunctionMatcher(funcName string) ExprMatcher { + return func(e NavigableExpr) bool { + if e.Kind() != CallKind { + return false + } + return e.AsCall().FunctionName() == funcName + } +} + +// AllMatcher returns true for all descendants of a NavigableExpr, effectively flattening them into a list. +// +// Such a result would work well with subsequent MatchList calls. +func AllMatcher() ExprMatcher { + return func(NavigableExpr) bool { + return true + } +} + +// MatchDescendants takes a NavigableExpr and ExprMatcher and produces a list of NavigableExpr values +// matching the input criteria in post-order (bottom up). +func MatchDescendants(expr NavigableExpr, matcher ExprMatcher) []NavigableExpr { + matches := []NavigableExpr{} + navVisitor := &baseVisitor{ + visitExpr: func(e Expr) { + nav := e.(NavigableExpr) + if matcher(nav) { + matches = append(matches, nav) + } + }, + } + visit(expr, navVisitor, postOrder, 0, 0) + return matches +} + +// MatchSubset applies an ExprMatcher to a list of NavigableExpr values and their descendants, producing a +// subset of NavigableExpr values which match. +func MatchSubset(exprs []NavigableExpr, matcher ExprMatcher) []NavigableExpr { + matches := []NavigableExpr{} + navVisitor := &baseVisitor{ + visitExpr: func(e Expr) { + nav := e.(NavigableExpr) + if matcher(nav) { + matches = append(matches, nav) + } + }, + } + for _, expr := range exprs { + visit(expr, navVisitor, postOrder, 0, 1) + } + return matches +} + +// Visitor defines an object for visiting Expr and EntryExpr nodes within an expression graph. +type Visitor interface { + // VisitExpr visits the input expression. + VisitExpr(Expr) + + // VisitEntryExpr visits the input entry expression, i.e. a struct field or map entry. + VisitEntryExpr(EntryExpr) +} + +type baseVisitor struct { + visitExpr func(Expr) + visitEntryExpr func(EntryExpr) +} + +// VisitExpr visits the Expr if the internal expr visitor has been configured. +func (v *baseVisitor) VisitExpr(e Expr) { + if v.visitExpr != nil { + v.visitExpr(e) + } +} + +// VisitEntryExpr visits the entry if the internal expr entry visitor has been configured. +func (v *baseVisitor) VisitEntryExpr(e EntryExpr) { + if v.visitEntryExpr != nil { + v.visitEntryExpr(e) + } +} + +// NewExprVisitor creates a visitor which only visits expression nodes. +func NewExprVisitor(v func(Expr)) Visitor { + return &baseVisitor{ + visitExpr: v, + visitEntryExpr: nil, + } +} + +// PostOrderVisit walks the expression graph and calls the visitor in post-order (bottom-up). +func PostOrderVisit(expr Expr, visitor Visitor) { + visit(expr, visitor, postOrder, 0, 0) +} + +// PreOrderVisit walks the expression graph and calls the visitor in pre-order (top-down). +func PreOrderVisit(expr Expr, visitor Visitor) { + visit(expr, visitor, preOrder, 0, 0) +} + +type visitOrder int + +const ( + preOrder = iota + 1 + postOrder +) + +// TODO: consider exposing a way to configure a limit for the max visit depth. +// It's possible that we could want to configure this on the NewExprVisitor() +// and through MatchDescendents() / MaxID(). +func visit(expr Expr, visitor Visitor, order visitOrder, depth, maxDepth int) { + if maxDepth > 0 && depth == maxDepth { + return + } + if order == preOrder { + visitor.VisitExpr(expr) + } + switch expr.Kind() { + case CallKind: + c := expr.AsCall() + if c.IsMemberFunction() { + visit(c.Target(), visitor, order, depth+1, maxDepth) + } + for _, arg := range c.Args() { + visit(arg, visitor, order, depth+1, maxDepth) + } + case ComprehensionKind: + c := expr.AsComprehension() + visit(c.IterRange(), visitor, order, depth+1, maxDepth) + visit(c.AccuInit(), visitor, order, depth+1, maxDepth) + visit(c.LoopCondition(), visitor, order, depth+1, maxDepth) + visit(c.LoopStep(), visitor, order, depth+1, maxDepth) + visit(c.Result(), visitor, order, depth+1, maxDepth) + case ListKind: + l := expr.AsList() + for _, elem := range l.Elements() { + visit(elem, visitor, order, depth+1, maxDepth) + } + case MapKind: + m := expr.AsMap() + for _, e := range m.Entries() { + if order == preOrder { + visitor.VisitEntryExpr(e) + } + entry := e.AsMapEntry() + visit(entry.Key(), visitor, order, depth+1, maxDepth) + visit(entry.Value(), visitor, order, depth+1, maxDepth) + if order == postOrder { + visitor.VisitEntryExpr(e) + } + } + case SelectKind: + visit(expr.AsSelect().Operand(), visitor, order, depth+1, maxDepth) + case StructKind: + s := expr.AsStruct() + for _, f := range s.Fields() { + if order == preOrder { + visitor.VisitEntryExpr(f) + } + visit(f.AsStructField().Value(), visitor, order, depth+1, maxDepth) + if order == postOrder { + visitor.VisitEntryExpr(f) + } + } + } + if order == postOrder { + visitor.VisitExpr(expr) + } +} + +func matchIsConstantValue(e NavigableExpr) bool { + if e.Kind() == LiteralKind { + return true + } + if e.Kind() == StructKind || e.Kind() == MapKind || e.Kind() == ListKind { + for _, child := range e.Children() { + if !matchIsConstantValue(child) { + return false + } + } + return true + } + return false +} + +func newNavigableExpr(ast *AST, parent NavigableExpr, expr Expr, depth int) NavigableExpr { + // Reduce navigable expression nesting by unwrapping the embedded Expr value. + if nav, ok := expr.(*navigableExprImpl); ok { + expr = nav.Expr + } + nav := &navigableExprImpl{ + Expr: expr, + depth: depth, + ast: ast, + parent: parent, + createChildren: getChildFactory(expr), + } + return nav +} + +type navigableExprImpl struct { + Expr + depth int + ast *AST + parent NavigableExpr + createChildren childFactory +} + +func (nav *navigableExprImpl) Parent() (NavigableExpr, bool) { + if nav.parent != nil { + return nav.parent, true + } + return nil, false +} + +func (nav *navigableExprImpl) ID() int64 { + return nav.Expr.ID() +} + +func (nav *navigableExprImpl) Kind() ExprKind { + return nav.Expr.Kind() +} + +func (nav *navigableExprImpl) Type() *types.Type { + return nav.ast.GetType(nav.ID()) +} + +func (nav *navigableExprImpl) Children() []NavigableExpr { + return nav.createChildren(nav) +} + +func (nav *navigableExprImpl) Depth() int { + return nav.depth +} + +func (nav *navigableExprImpl) AsCall() CallExpr { + return navigableCallImpl{navigableExprImpl: nav} +} + +func (nav *navigableExprImpl) AsComprehension() ComprehensionExpr { + return navigableComprehensionImpl{navigableExprImpl: nav} +} + +func (nav *navigableExprImpl) AsIdent() string { + return nav.Expr.AsIdent() +} + +func (nav *navigableExprImpl) AsList() ListExpr { + return navigableListImpl{navigableExprImpl: nav} +} + +func (nav *navigableExprImpl) AsLiteral() ref.Val { + return nav.Expr.AsLiteral() +} + +func (nav *navigableExprImpl) AsMap() MapExpr { + return navigableMapImpl{navigableExprImpl: nav} +} + +func (nav *navigableExprImpl) AsSelect() SelectExpr { + return navigableSelectImpl{navigableExprImpl: nav} +} + +func (nav *navigableExprImpl) AsStruct() StructExpr { + return navigableStructImpl{navigableExprImpl: nav} +} + +func (nav *navigableExprImpl) createChild(e Expr) NavigableExpr { + return newNavigableExpr(nav.ast, nav, e, nav.depth+1) +} + +func (nav *navigableExprImpl) isExpr() {} + +type navigableCallImpl struct { + *navigableExprImpl +} + +func (call navigableCallImpl) FunctionName() string { + return call.Expr.AsCall().FunctionName() +} + +func (call navigableCallImpl) IsMemberFunction() bool { + return call.Expr.AsCall().IsMemberFunction() +} + +func (call navigableCallImpl) Target() Expr { + t := call.Expr.AsCall().Target() + if t != nil { + return call.createChild(t) + } + return nil +} + +func (call navigableCallImpl) Args() []Expr { + args := call.Expr.AsCall().Args() + navArgs := make([]Expr, len(args)) + for i, a := range args { + navArgs[i] = call.createChild(a) + } + return navArgs +} + +type navigableComprehensionImpl struct { + *navigableExprImpl +} + +func (comp navigableComprehensionImpl) IterRange() Expr { + return comp.createChild(comp.Expr.AsComprehension().IterRange()) +} + +func (comp navigableComprehensionImpl) IterVar() string { + return comp.Expr.AsComprehension().IterVar() +} + +func (comp navigableComprehensionImpl) IterVar2() string { + return comp.Expr.AsComprehension().IterVar2() +} + +func (comp navigableComprehensionImpl) HasIterVar2() bool { + return comp.Expr.AsComprehension().HasIterVar2() +} + +func (comp navigableComprehensionImpl) AccuVar() string { + return comp.Expr.AsComprehension().AccuVar() +} + +func (comp navigableComprehensionImpl) AccuInit() Expr { + return comp.createChild(comp.Expr.AsComprehension().AccuInit()) +} + +func (comp navigableComprehensionImpl) LoopCondition() Expr { + return comp.createChild(comp.Expr.AsComprehension().LoopCondition()) +} + +func (comp navigableComprehensionImpl) LoopStep() Expr { + return comp.createChild(comp.Expr.AsComprehension().LoopStep()) +} + +func (comp navigableComprehensionImpl) Result() Expr { + return comp.createChild(comp.Expr.AsComprehension().Result()) +} + +type navigableListImpl struct { + *navigableExprImpl +} + +func (l navigableListImpl) Elements() []Expr { + pbElems := l.Expr.AsList().Elements() + elems := make([]Expr, len(pbElems)) + for i := 0; i < len(pbElems); i++ { + elems[i] = l.createChild(pbElems[i]) + } + return elems +} + +func (l navigableListImpl) IsOptional(index int32) bool { + return l.Expr.AsList().IsOptional(index) +} + +func (l navigableListImpl) OptionalIndices() []int32 { + return l.Expr.AsList().OptionalIndices() +} + +func (l navigableListImpl) Size() int { + return l.Expr.AsList().Size() +} + +type navigableMapImpl struct { + *navigableExprImpl +} + +func (m navigableMapImpl) Entries() []EntryExpr { + mapExpr := m.Expr.AsMap() + entries := make([]EntryExpr, len(mapExpr.Entries())) + for i, e := range mapExpr.Entries() { + entry := e.AsMapEntry() + entries[i] = &entryExpr{ + id: e.ID(), + entryExprKindCase: navigableEntryImpl{ + key: m.createChild(entry.Key()), + val: m.createChild(entry.Value()), + isOpt: entry.IsOptional(), + }, + } + } + return entries +} + +func (m navigableMapImpl) Size() int { + return m.Expr.AsMap().Size() +} + +type navigableEntryImpl struct { + key NavigableExpr + val NavigableExpr + isOpt bool +} + +func (e navigableEntryImpl) Kind() EntryExprKind { + return MapEntryKind +} + +func (e navigableEntryImpl) Key() Expr { + return e.key +} + +func (e navigableEntryImpl) Value() Expr { + return e.val +} + +func (e navigableEntryImpl) IsOptional() bool { + return e.isOpt +} + +func (e navigableEntryImpl) renumberIDs(IDGenerator) {} + +func (e navigableEntryImpl) isEntryExpr() {} + +type navigableSelectImpl struct { + *navigableExprImpl +} + +func (sel navigableSelectImpl) FieldName() string { + return sel.Expr.AsSelect().FieldName() +} + +func (sel navigableSelectImpl) IsTestOnly() bool { + return sel.Expr.AsSelect().IsTestOnly() +} + +func (sel navigableSelectImpl) Operand() Expr { + return sel.createChild(sel.Expr.AsSelect().Operand()) +} + +type navigableStructImpl struct { + *navigableExprImpl +} + +func (s navigableStructImpl) TypeName() string { + return s.Expr.AsStruct().TypeName() +} + +func (s navigableStructImpl) Fields() []EntryExpr { + fieldInits := s.Expr.AsStruct().Fields() + fields := make([]EntryExpr, len(fieldInits)) + for i, f := range fieldInits { + field := f.AsStructField() + fields[i] = &entryExpr{ + id: f.ID(), + entryExprKindCase: navigableFieldImpl{ + name: field.Name(), + val: s.createChild(field.Value()), + isOpt: field.IsOptional(), + }, + } + } + return fields +} + +type navigableFieldImpl struct { + name string + val NavigableExpr + isOpt bool +} + +func (f navigableFieldImpl) Kind() EntryExprKind { + return StructFieldKind +} + +func (f navigableFieldImpl) Name() string { + return f.name +} + +func (f navigableFieldImpl) Value() Expr { + return f.val +} + +func (f navigableFieldImpl) IsOptional() bool { + return f.isOpt +} + +func (f navigableFieldImpl) renumberIDs(IDGenerator) {} + +func (f navigableFieldImpl) isEntryExpr() {} + +func getChildFactory(expr Expr) childFactory { + if expr == nil { + return noopFactory + } + switch expr.Kind() { + case LiteralKind: + return noopFactory + case IdentKind: + return noopFactory + case SelectKind: + return selectFactory + case CallKind: + return callArgFactory + case ListKind: + return listElemFactory + case MapKind: + return mapEntryFactory + case StructKind: + return structEntryFactory + case ComprehensionKind: + return comprehensionFactory + default: + return noopFactory + } +} + +type childFactory func(*navigableExprImpl) []NavigableExpr + +func noopFactory(*navigableExprImpl) []NavigableExpr { + return nil +} + +func selectFactory(nav *navigableExprImpl) []NavigableExpr { + return []NavigableExpr{nav.createChild(nav.AsSelect().Operand())} +} + +func callArgFactory(nav *navigableExprImpl) []NavigableExpr { + call := nav.Expr.AsCall() + argCount := len(call.Args()) + if call.IsMemberFunction() { + argCount++ + } + navExprs := make([]NavigableExpr, argCount) + i := 0 + if call.IsMemberFunction() { + navExprs[i] = nav.createChild(call.Target()) + i++ + } + for _, arg := range call.Args() { + navExprs[i] = nav.createChild(arg) + i++ + } + return navExprs +} + +func listElemFactory(nav *navigableExprImpl) []NavigableExpr { + l := nav.Expr.AsList() + navExprs := make([]NavigableExpr, len(l.Elements())) + for i, e := range l.Elements() { + navExprs[i] = nav.createChild(e) + } + return navExprs +} + +func structEntryFactory(nav *navigableExprImpl) []NavigableExpr { + s := nav.Expr.AsStruct() + entries := make([]NavigableExpr, len(s.Fields())) + for i, e := range s.Fields() { + f := e.AsStructField() + entries[i] = nav.createChild(f.Value()) + } + return entries +} + +func mapEntryFactory(nav *navigableExprImpl) []NavigableExpr { + m := nav.Expr.AsMap() + entries := make([]NavigableExpr, len(m.Entries())*2) + j := 0 + for _, e := range m.Entries() { + mapEntry := e.AsMapEntry() + entries[j] = nav.createChild(mapEntry.Key()) + entries[j+1] = nav.createChild(mapEntry.Value()) + j += 2 + } + return entries +} + +func comprehensionFactory(nav *navigableExprImpl) []NavigableExpr { + compre := nav.Expr.AsComprehension() + return []NavigableExpr{ + nav.createChild(compre.IterRange()), + nav.createChild(compre.AccuInit()), + nav.createChild(compre.LoopCondition()), + nav.createChild(compre.LoopStep()), + nav.createChild(compre.Result()), + } +} diff --git a/vendor/github.com/google/cel-go/common/containers/BUILD.bazel b/vendor/github.com/google/cel-go/common/containers/BUILD.bazel new file mode 100644 index 0000000000..81197f0641 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/containers/BUILD.bazel @@ -0,0 +1,31 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "container.go", + ], + importpath = "github.com/google/cel-go/common/containers", + deps = [ + "//common/ast:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "container_test.go", + ], + embed = [ + ":go_default_library", + ], + deps = [ + "//common/ast:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/containers/container.go b/vendor/github.com/google/cel-go/common/containers/container.go new file mode 100644 index 0000000000..fc146b6fc4 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/containers/container.go @@ -0,0 +1,328 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package containers defines types and functions for resolving qualified names within a namespace +// or type provided to CEL. +package containers + +import ( + "fmt" + "strings" + "unicode" + + "github.com/google/cel-go/common/ast" +) + +var ( + // DefaultContainer has an empty container name. + DefaultContainer *Container = nil + + // Empty map to search for aliases when needed. + noAliases = make(map[string]string) +) + +// NewContainer creates a new Container with the fully-qualified name. +func NewContainer(opts ...ContainerOption) (*Container, error) { + var c *Container + var err error + for _, opt := range opts { + c, err = opt(c) + if err != nil { + return nil, err + } + } + return c, nil +} + +// Container holds a reference to an optional qualified container name and set of aliases. +// +// The program container can be used to simplify variable, function, and type specification within +// CEL programs and behaves more or less like a C++ namespace. See ResolveCandidateNames for more +// details. +type Container struct { + name string + aliases map[string]string +} + +// Extend creates a new Container with the existing settings and applies a series of +// ContainerOptions to further configure the new container. +func (c *Container) Extend(opts ...ContainerOption) (*Container, error) { + if c == nil { + return NewContainer(opts...) + } + // Copy the name and aliases of the existing container. + ext := &Container{name: c.Name()} + if len(c.AliasSet()) > 0 { + aliasSet := make(map[string]string, len(c.AliasSet())) + for k, v := range c.AliasSet() { + aliasSet[k] = v + } + ext.aliases = aliasSet + } + // Apply the new options to the container. + var err error + for _, opt := range opts { + ext, err = opt(ext) + if err != nil { + return nil, err + } + } + return ext, nil +} + +// Name returns the fully-qualified name of the container. +// +// The name may conceptually be a namespace, package, or type. +func (c *Container) Name() string { + if c == nil { + return "" + } + return c.name +} + +// ResolveCandidateNames returns the candidates name of namespaced identifiers in C++ resolution +// order. +// +// Names which shadow other names are returned first. If a name includes a leading dot ('.'), +// the name is treated as an absolute identifier which cannot be shadowed. +// +// Given a container name a.b.c.M.N and a type name R.s, this will deliver in order: +// +// a.b.c.M.N.R.s +// a.b.c.M.R.s +// a.b.c.R.s +// a.b.R.s +// a.R.s +// R.s +// +// If aliases or abbreviations are configured for the container, then alias names will take +// precedence over containerized names. +func (c *Container) ResolveCandidateNames(name string) []string { + if strings.HasPrefix(name, ".") { + qn := name[1:] + alias, isAlias := c.findAlias(qn) + if isAlias { + return []string{alias} + } + return []string{qn} + } + alias, isAlias := c.findAlias(name) + if isAlias { + return []string{alias} + } + if c.Name() == "" { + return []string{name} + } + nextCont := c.Name() + candidates := []string{nextCont + "." + name} + for i := strings.LastIndex(nextCont, "."); i >= 0; i = strings.LastIndex(nextCont, ".") { + nextCont = nextCont[:i] + candidates = append(candidates, nextCont+"."+name) + } + return append(candidates, name) +} + +// AliasSet returns the alias to fully-qualified name mapping stored in the container. +func (c *Container) AliasSet() map[string]string { + if c == nil || c.aliases == nil { + return noAliases + } + return c.aliases +} + +// findAlias takes a name as input and returns an alias expansion if one exists. +// +// If the name is qualified, the first component of the qualified name is checked against known +// aliases. Any alias that is found in a qualified name is expanded in the result: +// +// alias: R -> my.alias.R +// name: R.S.T +// output: my.alias.R.S.T +// +// Note, the name must not have a leading dot. +func (c *Container) findAlias(name string) (string, bool) { + // If an alias exists for the name, ensure it is searched last. + simple := name + qualifier := "" + dot := strings.Index(name, ".") + if dot >= 0 { + simple = name[0:dot] + qualifier = name[dot:] + } + alias, found := c.AliasSet()[simple] + if !found { + return "", false + } + return alias + qualifier, true +} + +// ContainerOption specifies a functional configuration option for a Container. +// +// Note, ContainerOption implementations must be able to handle nil container inputs. +type ContainerOption func(*Container) (*Container, error) + +// Abbrevs configures a set of simple names as abbreviations for fully-qualified names. +// +// An abbreviation (abbrev for short) is a simple name that expands to a fully-qualified name. +// Abbreviations can be useful when working with variables, functions, and especially types from +// multiple namespaces: +// +// // CEL object construction +// qual.pkg.version.ObjTypeName{ +// field: alt.container.ver.FieldTypeName{value: ...} +// } +// +// Only one the qualified names above may be used as the CEL container, so at least one of these +// references must be a long qualified name within an otherwise short CEL program. Using the +// following abbreviations, the program becomes much simpler: +// +// // CEL Go option +// Abbrevs("qual.pkg.version.ObjTypeName", "alt.container.ver.FieldTypeName") +// // Simplified Object construction +// ObjTypeName{field: FieldTypeName{value: ...}} +// +// There are a few rules for the qualified names and the simple abbreviations generated from them: +// - Qualified names must be dot-delimited, e.g. `package.subpkg.name`. +// - The last element in the qualified name is the abbreviation. +// - Abbreviations must not collide with each other. +// - The abbreviation must not collide with unqualified names in use. +// +// Abbreviations are distinct from container-based references in the following important ways: +// - Abbreviations must expand to a fully-qualified name. +// - Expanded abbreviations do not participate in namespace resolution. +// - Abbreviation expansion is done instead of the container search for a matching identifier. +// - Containers follow C++ namespace resolution rules with searches from the most qualified name +// to the least qualified name. +// - Container references within the CEL program may be relative, and are resolved to fully +// qualified names at either type-check time or program plan time, whichever comes first. +// +// If there is ever a case where an identifier could be in both the container and as an +// abbreviation, the abbreviation wins as this will ensure that the meaning of a program is +// preserved between compilations even as the container evolves. +func Abbrevs(qualifiedNames ...string) ContainerOption { + return func(c *Container) (*Container, error) { + for _, qn := range qualifiedNames { + qn = strings.TrimSpace(qn) + for _, r := range qn { + if !isIdentifierChar(r) { + return nil, fmt.Errorf( + "invalid qualified name: %s, wanted name of the form 'qualified.name'", qn) + } + } + ind := strings.LastIndex(qn, ".") + if ind <= 0 || ind >= len(qn)-1 { + return nil, fmt.Errorf( + "invalid qualified name: %s, wanted name of the form 'qualified.name'", qn) + } + alias := qn[ind+1:] + var err error + c, err = aliasAs("abbreviation", qn, alias)(c) + if err != nil { + return nil, err + } + } + return c, nil + } +} + +// Alias associates a fully-qualified name with a user-defined alias. +// +// In general, Abbrevs is preferred to Alias since the names generated from the Abbrevs option +// are more easily traced back to source code. The Alias option is useful for propagating alias +// configuration from one Container instance to another, and may also be useful for remapping +// poorly chosen protobuf message / package names. +// +// Note: all of the rules that apply to Abbrevs also apply to Alias. +func Alias(qualifiedName, alias string) ContainerOption { + return aliasAs("alias", qualifiedName, alias) +} + +func aliasAs(kind, qualifiedName, alias string) ContainerOption { + return func(c *Container) (*Container, error) { + if len(alias) == 0 || strings.Contains(alias, ".") { + return nil, fmt.Errorf( + "%s must be non-empty and simple (not qualified): %s=%s", kind, kind, alias) + } + + if qualifiedName[0:1] == "." { + return nil, fmt.Errorf("qualified name must not begin with a leading '.': %s", + qualifiedName) + } + ind := strings.LastIndex(qualifiedName, ".") + if ind <= 0 || ind == len(qualifiedName)-1 { + return nil, fmt.Errorf("%s must refer to a valid qualified name: %s", + kind, qualifiedName) + } + aliasRef, found := c.AliasSet()[alias] + if found { + return nil, fmt.Errorf( + "%s collides with existing reference: name=%s, %s=%s, existing=%s", + kind, qualifiedName, kind, alias, aliasRef) + } + if strings.HasPrefix(c.Name(), alias+".") || c.Name() == alias { + return nil, fmt.Errorf( + "%s collides with container name: name=%s, %s=%s, container=%s", + kind, qualifiedName, kind, alias, c.Name()) + } + if c == nil { + c = &Container{} + } + if c.aliases == nil { + c.aliases = make(map[string]string) + } + c.aliases[alias] = qualifiedName + return c, nil + } +} + +func isIdentifierChar(r rune) bool { + return r <= unicode.MaxASCII && (r == '.' || r == '_' || unicode.IsLetter(r) || unicode.IsNumber(r)) +} + +// Name sets the fully-qualified name of the Container. +func Name(name string) ContainerOption { + return func(c *Container) (*Container, error) { + if len(name) > 0 && name[0:1] == "." { + return nil, fmt.Errorf("container name must not contain a leading '.': %s", name) + } + if c.Name() == name { + return c, nil + } + if c == nil { + return &Container{name: name}, nil + } + c.name = name + return c, nil + } +} + +// ToQualifiedName converts an expression AST into a qualified name if possible, with a boolean +// 'found' value that indicates if the conversion is successful. +func ToQualifiedName(e ast.Expr) (string, bool) { + switch e.Kind() { + case ast.IdentKind: + id := e.AsIdent() + return id, true + case ast.SelectKind: + sel := e.AsSelect() + // Test only expressions are not valid as qualified names. + if sel.IsTestOnly() { + return "", false + } + if qual, found := ToQualifiedName(sel.Operand()); found { + return qual + "." + sel.FieldName(), true + } + } + return "", false +} diff --git a/vendor/github.com/google/cel-go/common/cost.go b/vendor/github.com/google/cel-go/common/cost.go new file mode 100644 index 0000000000..5e24bd0f47 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/cost.go @@ -0,0 +1,40 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package common + +const ( + // SelectAndIdentCost is the cost of an operation that accesses an identifier or performs a select. + SelectAndIdentCost = 1 + + // ConstCost is the cost of an operation that accesses a constant. + ConstCost = 0 + + // ListCreateBaseCost is the base cost of any operation that creates a new list. + ListCreateBaseCost = 10 + + // MapCreateBaseCost is the base cost of any operation that creates a new map. + MapCreateBaseCost = 30 + + // StructCreateBaseCost is the base cost of any operation that creates a new struct. + StructCreateBaseCost = 40 + + // StringTraversalCostFactor is multiplied to a length of a string when computing the cost of traversing the entire + // string once. + StringTraversalCostFactor = 0.1 + + // RegexStringLengthCostFactor is multiplied ot the length of a regex string pattern when computing the cost of + // applying the regex to a string of unit cost. + RegexStringLengthCostFactor = 0.25 +) diff --git a/vendor/github.com/google/cel-go/common/debug/BUILD.bazel b/vendor/github.com/google/cel-go/common/debug/BUILD.bazel new file mode 100644 index 0000000000..724ed34045 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/debug/BUILD.bazel @@ -0,0 +1,20 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "debug.go", + ], + importpath = "github.com/google/cel-go/common/debug", + deps = [ + "//common:go_default_library", + "//common/ast:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/debug/debug.go b/vendor/github.com/google/cel-go/common/debug/debug.go new file mode 100644 index 0000000000..75f5f0d636 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/debug/debug.go @@ -0,0 +1,314 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package debug provides tools to print a parsed expression graph and +// adorn each expression element with additional metadata. +package debug + +import ( + "bytes" + "fmt" + "strconv" + "strings" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// Adorner returns debug metadata that will be tacked on to the string +// representation of an expression. +type Adorner interface { + // GetMetadata for the input context. + GetMetadata(ctx any) string +} + +// Writer manages writing expressions to an internal string. +type Writer interface { + fmt.Stringer + + // Buffer pushes an expression into an internal queue of expressions to + // write to a string. + Buffer(e ast.Expr) +} + +type emptyDebugAdorner struct { +} + +var emptyAdorner Adorner = &emptyDebugAdorner{} + +func (a *emptyDebugAdorner) GetMetadata(e any) string { + return "" +} + +// ToDebugString gives the unadorned string representation of the Expr. +func ToDebugString(e ast.Expr) string { + return ToAdornedDebugString(e, emptyAdorner) +} + +// ToAdornedDebugString gives the adorned string representation of the Expr. +func ToAdornedDebugString(e ast.Expr, adorner Adorner) string { + w := newDebugWriter(adorner) + w.Buffer(e) + return w.String() +} + +// debugWriter is used to print out pretty-printed debug strings. +type debugWriter struct { + adorner Adorner + buffer bytes.Buffer + indent int + lineStart bool +} + +func newDebugWriter(a Adorner) *debugWriter { + return &debugWriter{ + adorner: a, + indent: 0, + lineStart: true, + } +} + +func (w *debugWriter) Buffer(e ast.Expr) { + if e == nil { + return + } + switch e.Kind() { + case ast.LiteralKind: + w.append(formatLiteral(e.AsLiteral())) + case ast.IdentKind: + w.append(e.AsIdent()) + case ast.SelectKind: + w.appendSelect(e.AsSelect()) + case ast.CallKind: + w.appendCall(e.AsCall()) + case ast.ListKind: + w.appendList(e.AsList()) + case ast.MapKind: + w.appendMap(e.AsMap()) + case ast.StructKind: + w.appendStruct(e.AsStruct()) + case ast.ComprehensionKind: + w.appendComprehension(e.AsComprehension()) + } + w.adorn(e) +} + +func (w *debugWriter) appendSelect(sel ast.SelectExpr) { + w.Buffer(sel.Operand()) + w.append(".") + w.append(sel.FieldName()) + if sel.IsTestOnly() { + w.append("~test-only~") + } +} + +func (w *debugWriter) appendCall(call ast.CallExpr) { + if call.IsMemberFunction() { + w.Buffer(call.Target()) + w.append(".") + } + w.append(call.FunctionName()) + w.append("(") + if len(call.Args()) > 0 { + w.addIndent() + w.appendLine() + for i, arg := range call.Args() { + if i > 0 { + w.append(",") + w.appendLine() + } + w.Buffer(arg) + } + w.removeIndent() + w.appendLine() + } + w.append(")") +} + +func (w *debugWriter) appendList(list ast.ListExpr) { + w.append("[") + if len(list.Elements()) > 0 { + w.appendLine() + w.addIndent() + for i, elem := range list.Elements() { + if i > 0 { + w.append(",") + w.appendLine() + } + w.Buffer(elem) + } + w.removeIndent() + w.appendLine() + } + w.append("]") +} + +func (w *debugWriter) appendStruct(obj ast.StructExpr) { + w.append(obj.TypeName()) + w.append("{") + if len(obj.Fields()) > 0 { + w.appendLine() + w.addIndent() + for i, f := range obj.Fields() { + field := f.AsStructField() + if i > 0 { + w.append(",") + w.appendLine() + } + if field.IsOptional() { + w.append("?") + } + w.append(field.Name()) + w.append(":") + w.Buffer(field.Value()) + w.adorn(f) + } + w.removeIndent() + w.appendLine() + } + w.append("}") +} + +func (w *debugWriter) appendMap(m ast.MapExpr) { + w.append("{") + if m.Size() > 0 { + w.appendLine() + w.addIndent() + for i, e := range m.Entries() { + entry := e.AsMapEntry() + if i > 0 { + w.append(",") + w.appendLine() + } + if entry.IsOptional() { + w.append("?") + } + w.Buffer(entry.Key()) + w.append(":") + w.Buffer(entry.Value()) + w.adorn(e) + } + w.removeIndent() + w.appendLine() + } + w.append("}") +} + +func (w *debugWriter) appendComprehension(comprehension ast.ComprehensionExpr) { + w.append("__comprehension__(") + w.addIndent() + w.appendLine() + w.append("// Variable") + w.appendLine() + w.append(comprehension.IterVar()) + w.append(",") + w.appendLine() + if comprehension.HasIterVar2() { + w.append(comprehension.IterVar2()) + w.append(",") + w.appendLine() + } + w.append("// Target") + w.appendLine() + w.Buffer(comprehension.IterRange()) + w.append(",") + w.appendLine() + w.append("// Accumulator") + w.appendLine() + w.append(comprehension.AccuVar()) + w.append(",") + w.appendLine() + w.append("// Init") + w.appendLine() + w.Buffer(comprehension.AccuInit()) + w.append(",") + w.appendLine() + w.append("// LoopCondition") + w.appendLine() + w.Buffer(comprehension.LoopCondition()) + w.append(",") + w.appendLine() + w.append("// LoopStep") + w.appendLine() + w.Buffer(comprehension.LoopStep()) + w.append(",") + w.appendLine() + w.append("// Result") + w.appendLine() + w.Buffer(comprehension.Result()) + w.append(")") + w.removeIndent() +} + +func formatLiteral(c ref.Val) string { + switch v := c.(type) { + case types.Bool: + return fmt.Sprintf("%t", v) + case types.Bytes: + return fmt.Sprintf("b%s", strconv.Quote(string(v))) + case types.Double: + return fmt.Sprintf("%v", float64(v)) + case types.Int: + return fmt.Sprintf("%d", int64(v)) + case types.String: + return strconv.Quote(string(v)) + case types.Uint: + return fmt.Sprintf("%du", uint64(v)) + case types.Null: + return "null" + default: + panic("Unknown constant type") + } +} + +func (w *debugWriter) append(s string) { + w.doIndent() + w.buffer.WriteString(s) +} + +func (w *debugWriter) appendFormat(f string, args ...any) { + w.append(fmt.Sprintf(f, args...)) +} + +func (w *debugWriter) doIndent() { + if w.lineStart { + w.lineStart = false + w.buffer.WriteString(strings.Repeat(" ", w.indent)) + } +} + +func (w *debugWriter) adorn(e any) { + w.append(w.adorner.GetMetadata(e)) +} + +func (w *debugWriter) appendLine() { + w.buffer.WriteString("\n") + w.lineStart = true +} + +func (w *debugWriter) addIndent() { + w.indent++ +} + +func (w *debugWriter) removeIndent() { + w.indent-- + if w.indent < 0 { + panic("negative indent") + } +} + +func (w *debugWriter) String() string { + return w.buffer.String() +} diff --git a/vendor/github.com/google/cel-go/common/decls/BUILD.bazel b/vendor/github.com/google/cel-go/common/decls/BUILD.bazel new file mode 100644 index 0000000000..bd3f9ae70e --- /dev/null +++ b/vendor/github.com/google/cel-go/common/decls/BUILD.bazel @@ -0,0 +1,41 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "decls.go", + ], + importpath = "github.com/google/cel-go/common/decls", + deps = [ + "//checker/decls:go_default_library", + "//common:go_default_library", + "//common/functions:go_default_library", + "//common/operators:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + ], +) + +go_test( + name = "go_default_test", + srcs = [ + "decls_test.go", + ], + embed = [":go_default_library"], + deps = [ + "//checker/decls:go_default_library", + "//common/overloads:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/decls/decls.go b/vendor/github.com/google/cel-go/common/decls/decls.go new file mode 100644 index 0000000000..a4a51c3f28 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/decls/decls.go @@ -0,0 +1,1129 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package decls contains function and variable declaration structs and helper methods. +package decls + +import ( + "fmt" + "strings" + + chkdecls "github.com/google/cel-go/checker/decls" + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/functions" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +// NewFunction creates a new function declaration with a set of function options to configure overloads +// and function definitions (implementations). +// +// Functions are checked for name collisions and singleton redefinition. +func NewFunction(name string, opts ...FunctionOpt) (*FunctionDecl, error) { + fn := &FunctionDecl{ + name: name, + overloads: map[string]*OverloadDecl{}, + overloadOrdinals: []string{}, + } + var err error + for _, opt := range opts { + fn, err = opt(fn) + if err != nil { + return nil, err + } + } + if len(fn.overloads) == 0 { + return nil, fmt.Errorf("function %s must have at least one overload", name) + } + return fn, nil +} + +// FunctionDecl defines a function name, overload set, and optionally a singleton definition for all +// overload instances. +type FunctionDecl struct { + name string + doc string + + // overloads associated with the function name. + overloads map[string]*OverloadDecl + + // singleton implementation of the function for all overloads. + // + // If this option is set, an error will occur if any overloads specify a per-overload implementation + // or if another function with the same name attempts to redefine the singleton. + singleton *functions.Overload + + // disableTypeGuards is a performance optimization to disable detailed runtime type checks which could + // add overhead on common operations. Setting this option true leaves error checks and argument checks + // intact. + disableTypeGuards bool + + // state indicates that the binding should be provided as a declaration, as a runtime binding, or both. + state declarationState + + // overloadOrdinals indicates the order in which the overload was declared. + overloadOrdinals []string +} + +type declarationState int + +const ( + declarationStateUnset declarationState = iota + declarationDisabled + declarationEnabled +) + +// Documentation generates documentation about the Function and its overloads as a common.Doc object. +func (f *FunctionDecl) Documentation() *common.Doc { + if f == nil { + return nil + } + children := make([]*common.Doc, len(f.OverloadDecls())) + for i, o := range f.OverloadDecls() { + var examples []*common.Doc + for _, ex := range o.Examples() { + examples = append(examples, common.NewExampleDoc(ex)) + } + od := common.NewOverloadDoc(o.ID(), formatSignature(f.Name(), o), examples...) + children[i] = od + } + return common.NewFunctionDoc( + f.Name(), + f.Description(), + children...) +} + +// Name returns the function name in human-readable terms, e.g. 'contains' of 'math.least' +func (f *FunctionDecl) Name() string { + if f == nil { + return "" + } + return f.name +} + +// Description provides an overview of the function's purpose. +// +// Usage examples should be included on specific overloads. +func (f *FunctionDecl) Description() string { + if f == nil { + return "" + } + return f.doc +} + +// IsDeclarationDisabled indicates that the function implementation should be added to the dispatcher, but the +// declaration should not be exposed for use in expressions. +func (f *FunctionDecl) IsDeclarationDisabled() bool { + if f == nil { + return true + } + return f.state == declarationDisabled +} + +// Merge combines an existing function declaration with another. +// +// If a function is extended, by say adding new overloads to an existing function, then it is merged with the +// prior definition of the function at which point its overloads must not collide with pre-existing overloads +// and its bindings (singleton, or per-overload) must not conflict with previous definitions either. +func (f *FunctionDecl) Merge(other *FunctionDecl) (*FunctionDecl, error) { + if f == other { + return f, nil + } + if f == nil || other == nil || f.Name() != other.Name() { + return nil, fmt.Errorf("cannot merge unrelated functions. %q and %q", f.Name(), other.Name()) + } + merged := &FunctionDecl{ + name: f.Name(), + overloads: make(map[string]*OverloadDecl, len(f.overloads)), + singleton: f.singleton, + overloadOrdinals: make([]string, len(f.overloads)), + // if one function is expecting type-guards and the other is not, then they + // must not be disabled. + disableTypeGuards: f.disableTypeGuards && other.disableTypeGuards, + // default to the current functions declaration state. + state: f.state, + doc: f.doc, + } + // If the other state indicates that the declaration should be explicitly enabled or + // disabled, then update the merged state with the most recent value. + if other.state != declarationStateUnset { + merged.state = other.state + } + // Allow for non-empty overrides of documentation + if len(other.doc) != 0 && f.doc != other.doc { + merged.doc = other.doc + } + // baseline copy of the overloads and their ordinals + copy(merged.overloadOrdinals, f.overloadOrdinals) + for oID, o := range f.overloads { + merged.overloads[oID] = o + } + // overloads and their ordinals are added from the left + for _, oID := range other.overloadOrdinals { + o := other.overloads[oID] + err := merged.AddOverload(o) + if err != nil { + return nil, fmt.Errorf("function declaration merge failed: %v", err) + } + } + if other.singleton != nil { + if merged.singleton != nil && merged.singleton != other.singleton { + return nil, fmt.Errorf("function already has a singleton binding: %s", f.Name()) + } + merged.singleton = other.singleton + } + return merged, nil +} + +// FunctionSubsetter subsets a function declaration or returns nil and false if the function +// subset was empty. +type FunctionSubsetter func(fn *FunctionDecl) (*FunctionDecl, bool) + +// OverloadSelector selects an overload associated with a given function when it returns true. +// +// Used in combination with the Subset method. +type OverloadSelector func(overload *OverloadDecl) bool + +// IncludeOverloads defines an OverloadSelector which allow-lists a set of overloads by their ids. +func IncludeOverloads(overloadIDs ...string) OverloadSelector { + return func(overload *OverloadDecl) bool { + for _, oID := range overloadIDs { + if overload.id == oID { + return true + } + } + return false + } +} + +// ExcludeOverloads defines an OverloadSelector which deny-lists a set of overloads by their ids. +func ExcludeOverloads(overloadIDs ...string) OverloadSelector { + return func(overload *OverloadDecl) bool { + for _, oID := range overloadIDs { + if overload.id == oID { + return false + } + } + return true + } +} + +// Subset returns a new function declaration which contains only the overloads with the specified IDs. +// If the subset function contains no overloads, then nil is returned to indicate the function is not +// functional. +func (f *FunctionDecl) Subset(selector OverloadSelector) *FunctionDecl { + if f == nil { + return nil + } + overloads := make(map[string]*OverloadDecl) + overloadOrdinals := make([]string, 0, len(f.overloadOrdinals)) + for _, oID := range f.overloadOrdinals { + overload := f.overloads[oID] + if selector(overload) { + overloads[oID] = overload + overloadOrdinals = append(overloadOrdinals, oID) + } + } + if len(overloads) == 0 { + return nil + } + subset := &FunctionDecl{ + name: f.Name(), + doc: f.doc, + overloads: overloads, + singleton: f.singleton, + disableTypeGuards: f.disableTypeGuards, + state: f.state, + overloadOrdinals: overloadOrdinals, + } + return subset +} + +// AddOverload ensures that the new overload does not collide with an existing overload signature; +// however, if the function signatures are identical, the implementation may be rewritten as its +// difficult to compare functions by object identity. +func (f *FunctionDecl) AddOverload(overload *OverloadDecl) error { + if f == nil { + return fmt.Errorf("nil function cannot add overload: %s", overload.ID()) + } + if overload == nil { + return fmt.Errorf("cannot add nil overload to funciton: %s", f.Name()) + } + for oID, o := range f.overloads { + if oID != overload.ID() && o.SignatureOverlaps(overload) { + return fmt.Errorf("overload signature collision in function %s: %s collides with %s", f.Name(), oID, overload.ID()) + } + if oID == overload.ID() { + if o.SignatureEquals(overload) && o.IsNonStrict() == overload.IsNonStrict() { + // Allow redefinition of an overload implementation so long as the signatures match. + if overload.hasBinding() { + f.overloads[oID] = overload + } + // Allow redefinition of the doc string. + if len(overload.doc) != 0 && o.doc != overload.doc { + o.doc = overload.doc + } + return nil + } + return fmt.Errorf("overload redefinition in function. %s: %s has multiple definitions", f.Name(), oID) + } + if overload.HasLateBinding() != o.HasLateBinding() { + return fmt.Errorf("overload with late binding cannot be added to function %s: cannot mix late and non-late bindings", f.Name()) + } + } + f.overloadOrdinals = append(f.overloadOrdinals, overload.ID()) + f.overloads[overload.ID()] = overload + return nil +} + +// OverloadDecls returns the overload declarations in the order in which they were declared. +func (f *FunctionDecl) OverloadDecls() []*OverloadDecl { + var emptySet []*OverloadDecl + if f == nil { + return emptySet + } + overloads := make([]*OverloadDecl, 0, len(f.overloads)) + for _, oID := range f.overloadOrdinals { + overloads = append(overloads, f.overloads[oID]) + } + return overloads +} + +// HasLateBinding returns true if the function has late bindings. A function cannot mix late bindings with other bindings. +func (f *FunctionDecl) HasLateBinding() bool { + if f == nil { + return false + } + for _, oID := range f.overloadOrdinals { + if f.overloads[oID].HasLateBinding() { + return true + } + } + return false +} + +// Bindings produces a set of function bindings, if any are defined. +func (f *FunctionDecl) Bindings() ([]*functions.Overload, error) { + var emptySet []*functions.Overload + if f == nil { + return emptySet, nil + } + overloads := []*functions.Overload{} + nonStrict := false + hasLateBinding := false + for _, oID := range f.overloadOrdinals { + o := f.overloads[oID] + hasLateBinding = hasLateBinding || o.HasLateBinding() + if o.hasBinding() { + overload := &functions.Overload{ + Operator: o.ID(), + Unary: o.guardedUnaryOp(f.Name(), f.disableTypeGuards), + Binary: o.guardedBinaryOp(f.Name(), f.disableTypeGuards), + Function: o.guardedFunctionOp(f.Name(), f.disableTypeGuards), + OperandTrait: o.OperandTrait(), + NonStrict: o.IsNonStrict(), + } + overloads = append(overloads, overload) + nonStrict = nonStrict || o.IsNonStrict() + } + } + if f.singleton != nil { + if len(overloads) != 0 { + return nil, fmt.Errorf("singleton function incompatible with specialized overloads: %s", f.Name()) + } + if hasLateBinding { + return nil, fmt.Errorf("singleton function incompatible with late bindings: %s", f.Name()) + } + overloads = []*functions.Overload{ + { + Operator: f.Name(), + Unary: f.singleton.Unary, + Binary: f.singleton.Binary, + Function: f.singleton.Function, + OperandTrait: f.singleton.OperandTrait, + }, + } + // fall-through to return single overload case. + } + if len(overloads) == 0 { + return overloads, nil + } + // Single overload. Replicate an entry for it using the function name as well. + if len(overloads) == 1 { + if overloads[0].Operator == f.Name() { + return overloads, nil + } + return append(overloads, &functions.Overload{ + Operator: f.Name(), + Unary: overloads[0].Unary, + Binary: overloads[0].Binary, + Function: overloads[0].Function, + NonStrict: overloads[0].NonStrict, + OperandTrait: overloads[0].OperandTrait, + }), nil + } + // All of the defined overloads are wrapped into a top-level function which + // performs dynamic dispatch to the proper overload based on the argument types. + bindings := append([]*functions.Overload{}, overloads...) + funcDispatch := func(args ...ref.Val) ref.Val { + for _, oID := range f.overloadOrdinals { + o := f.overloads[oID] + // During dynamic dispatch over multiple functions, signature agreement checks + // are preserved in order to assist with the function resolution step. + switch len(args) { + case 1: + if o.unaryOp != nil && o.matchesRuntimeSignature(f.disableTypeGuards, args...) { + return o.unaryOp(args[0]) + } + case 2: + if o.binaryOp != nil && o.matchesRuntimeSignature(f.disableTypeGuards, args...) { + return o.binaryOp(args[0], args[1]) + } + } + if o.functionOp != nil && o.matchesRuntimeSignature(f.disableTypeGuards, args...) { + return o.functionOp(args...) + } + // eventually this will fall through to the noSuchOverload below. + } + return MaybeNoSuchOverload(f.Name(), args...) + } + function := &functions.Overload{ + Operator: f.Name(), + Function: funcDispatch, + NonStrict: nonStrict, + } + return append(bindings, function), nil +} + +// MaybeNoSuchOverload determines whether to propagate an error if one is provided as an argument, or +// to return an unknown set, or to produce a new error for a missing function signature. +func MaybeNoSuchOverload(funcName string, args ...ref.Val) ref.Val { + argTypes := make([]string, len(args)) + var unk *types.Unknown = nil + for i, arg := range args { + if types.IsError(arg) { + return arg + } + if types.IsUnknown(arg) { + unk = types.MergeUnknowns(arg.(*types.Unknown), unk) + } + argTypes[i] = arg.Type().TypeName() + } + if unk != nil { + return unk + } + signature := strings.Join(argTypes, ", ") + return types.NewErr("no such overload: %s(%s)", funcName, signature) +} + +// FunctionOpt defines a functional option for mutating a function declaration. +type FunctionOpt func(*FunctionDecl) (*FunctionDecl, error) + +// FunctionDocs configures documentation from a list of strings separated by newlines. +func FunctionDocs(docs ...string) FunctionOpt { + return func(fn *FunctionDecl) (*FunctionDecl, error) { + fn.doc = common.MultilineDescription(docs...) + return fn, nil + } +} + +// DisableTypeGuards disables automatically generated function invocation guards on direct overload calls. +// Type guards remain on during dynamic dispatch for parsed-only expressions. +func DisableTypeGuards(value bool) FunctionOpt { + return func(fn *FunctionDecl) (*FunctionDecl, error) { + fn.disableTypeGuards = value + return fn, nil + } +} + +// DisableDeclaration indicates that the function declaration should be disabled, but the runtime function +// binding should be provided. Marking a function as runtime-only is a safe way to manage deprecations +// of function declarations while still preserving the runtime behavior for previously compiled expressions. +func DisableDeclaration(value bool) FunctionOpt { + return func(fn *FunctionDecl) (*FunctionDecl, error) { + if value { + fn.state = declarationDisabled + } else { + fn.state = declarationEnabled + } + return fn, nil + } +} + +// SingletonUnaryBinding creates a singleton function definition to be used for all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +func SingletonUnaryBinding(fn functions.UnaryOp, traits ...int) FunctionOpt { + trait := 0 + for _, t := range traits { + trait = trait | t + } + return func(f *FunctionDecl) (*FunctionDecl, error) { + if f.singleton != nil { + return nil, fmt.Errorf("function already has a singleton binding: %s", f.Name()) + } + f.singleton = &functions.Overload{ + Operator: f.Name(), + Unary: fn, + OperandTrait: trait, + } + return f, nil + } +} + +// SingletonBinaryBinding creates a singleton function definition to be used with all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +func SingletonBinaryBinding(fn functions.BinaryOp, traits ...int) FunctionOpt { + trait := 0 + for _, t := range traits { + trait = trait | t + } + return func(f *FunctionDecl) (*FunctionDecl, error) { + if f.singleton != nil { + return nil, fmt.Errorf("function already has a singleton binding: %s", f.Name()) + } + f.singleton = &functions.Overload{ + Operator: f.Name(), + Binary: fn, + OperandTrait: trait, + } + return f, nil + } +} + +// SingletonFunctionBinding creates a singleton function definition to be used with all function overloads. +// +// Note, this approach works well if operand is expected to have a specific trait which it implements, +// e.g. traits.ContainerType. Otherwise, prefer per-overload function bindings. +func SingletonFunctionBinding(fn functions.FunctionOp, traits ...int) FunctionOpt { + trait := 0 + for _, t := range traits { + trait = trait | t + } + return func(f *FunctionDecl) (*FunctionDecl, error) { + if f.singleton != nil { + return nil, fmt.Errorf("function already has a singleton binding: %s", f.Name()) + } + f.singleton = &functions.Overload{ + Operator: f.Name(), + Function: fn, + OperandTrait: trait, + } + return f, nil + } +} + +// Overload defines a new global overload with an overload id, argument types, and result type. Through the +// use of OverloadOpt options, the overload may also be configured with a binding, an operand trait, and to +// be non-strict. +// +// Note: function bindings should be commonly configured with Overload instances whereas operand traits and +// strict-ness should be rare occurrences. +func Overload(overloadID string, + args []*types.Type, resultType *types.Type, + opts ...OverloadOpt) FunctionOpt { + return newOverload(overloadID, false, args, resultType, opts...) +} + +// MemberOverload defines a new receiver-style overload (or member function) with an overload id, argument types, +// and result type. Through the use of OverloadOpt options, the overload may also be configured with a binding, +// an operand trait, and to be non-strict. +// +// Note: function bindings should be commonly configured with Overload instances whereas operand traits and +// strict-ness should be rare occurrences. +func MemberOverload(overloadID string, + args []*types.Type, resultType *types.Type, + opts ...OverloadOpt) FunctionOpt { + return newOverload(overloadID, true, args, resultType, opts...) +} + +func newOverload(overloadID string, + memberFunction bool, args []*types.Type, resultType *types.Type, + opts ...OverloadOpt) FunctionOpt { + return func(f *FunctionDecl) (*FunctionDecl, error) { + overload, err := newOverloadInternal(overloadID, memberFunction, args, resultType, opts...) + if err != nil { + return nil, err + } + err = f.AddOverload(overload) + if err != nil { + return nil, err + } + return f, nil + } +} + +func newOverloadInternal(overloadID string, + memberFunction bool, args []*types.Type, resultType *types.Type, + opts ...OverloadOpt) (*OverloadDecl, error) { + overload := &OverloadDecl{ + id: overloadID, + argTypes: args, + resultType: resultType, + isMemberFunction: memberFunction, + } + var err error + for _, opt := range opts { + overload, err = opt(overload) + if err != nil { + return nil, err + } + } + return overload, nil +} + +// OverloadDecl contains the definition of a single overload id with a specific signature, and an optional +// implementation. +type OverloadDecl struct { + id string + doc string + argTypes []*types.Type + resultType *types.Type + isMemberFunction bool + // hasLateBinding indicates that the function has a binding which is not known at compile time. + // This is useful for functions which have side-effects or are not deterministically computable. + hasLateBinding bool + // nonStrict indicates that the function will accept error and unknown arguments as inputs. + nonStrict bool + // operandTrait indicates whether the member argument should have a specific type-trait. + // + // This is useful for creating overloads which operate on a type-interface rather than a concrete type. + operandTrait int + + // Function implementation options. Optional, but encouraged. + // unaryOp is a function binding that takes a single argument. + unaryOp functions.UnaryOp + // binaryOp is a function binding that takes two arguments. + binaryOp functions.BinaryOp + // functionOp is a catch-all for zero-arity and three-plus arity functions. + functionOp functions.FunctionOp +} + +// Examples returns a list of string examples for the overload. +func (o *OverloadDecl) Examples() []string { + var emptySet []string + if o == nil || len(o.doc) == 0 { + return emptySet + } + return common.ParseDescriptions(o.doc) +} + +// ID mirrors the overload signature and provides a unique id which may be referenced within the type-checker +// and interpreter to optimize performance. +// +// The ID format is usually one of two styles: +// global: __ +// member: ___ +func (o *OverloadDecl) ID() string { + if o == nil { + return "" + } + return o.id +} + +// ArgTypes contains the set of argument types expected by the overload. +// +// For member functions ArgTypes[0] represents the member operand type. +func (o *OverloadDecl) ArgTypes() []*types.Type { + if o == nil { + return emptyArgs + } + return o.argTypes +} + +// IsMemberFunction indicates whether the overload is a member function +func (o *OverloadDecl) IsMemberFunction() bool { + if o == nil { + return false + } + return o.isMemberFunction +} + +// IsNonStrict returns whether the overload accepts errors and unknown values as arguments. +func (o *OverloadDecl) IsNonStrict() bool { + if o == nil { + return false + } + return o.nonStrict +} + +// HasLateBinding returns whether the overload has a binding which is not known at compile time. +func (o *OverloadDecl) HasLateBinding() bool { + if o == nil { + return false + } + return o.hasLateBinding +} + +// OperandTrait returns the trait mask of the first operand to the overload call, e.g. +// `traits.Indexer` +func (o *OverloadDecl) OperandTrait() int { + if o == nil { + return 0 + } + return o.operandTrait +} + +// ResultType indicates the output type from calling the function. +func (o *OverloadDecl) ResultType() *types.Type { + if o == nil { + // *types.Type is nil-safe + return nil + } + return o.resultType +} + +// TypeParams returns the type parameter names associated with the overload. +func (o *OverloadDecl) TypeParams() []string { + typeParams := map[string]struct{}{} + collectParamNames(typeParams, o.ResultType()) + for _, arg := range o.ArgTypes() { + collectParamNames(typeParams, arg) + } + params := make([]string, 0, len(typeParams)) + for param := range typeParams { + params = append(params, param) + } + return params +} + +// SignatureEquals determines whether the incoming overload declaration signature is equal to the current signature. +// +// Result type, operand trait, and strict-ness are not considered as part of signature equality. +func (o *OverloadDecl) SignatureEquals(other *OverloadDecl) bool { + if o == other { + return true + } + if o.ID() != other.ID() || o.IsMemberFunction() != other.IsMemberFunction() || len(o.ArgTypes()) != len(other.ArgTypes()) { + return false + } + for i, at := range o.ArgTypes() { + oat := other.ArgTypes()[i] + if !at.IsEquivalentType(oat) { + return false + } + } + return o.ResultType().IsEquivalentType(other.ResultType()) +} + +// SignatureOverlaps indicates whether two functions have non-equal, but overloapping function signatures. +// +// For example, list(dyn) collides with list(string) since the 'dyn' type can contain a 'string' type. +func (o *OverloadDecl) SignatureOverlaps(other *OverloadDecl) bool { + if o.IsMemberFunction() != other.IsMemberFunction() || len(o.ArgTypes()) != len(other.ArgTypes()) { + return false + } + argsOverlap := true + for i, argType := range o.ArgTypes() { + otherArgType := other.ArgTypes()[i] + argsOverlap = argsOverlap && + (argType.IsAssignableType(otherArgType) || + otherArgType.IsAssignableType(argType)) + } + return argsOverlap +} + +// hasBinding indicates whether the overload already has a definition. +func (o *OverloadDecl) hasBinding() bool { + return o != nil && (o.unaryOp != nil || o.binaryOp != nil || o.functionOp != nil) +} + +// guardedUnaryOp creates an invocation guard around the provided unary operator, if one is defined. +func (o *OverloadDecl) guardedUnaryOp(funcName string, disableTypeGuards bool) functions.UnaryOp { + if o.unaryOp == nil { + return nil + } + return func(arg ref.Val) ref.Val { + if !o.matchesRuntimeUnarySignature(disableTypeGuards, arg) { + return MaybeNoSuchOverload(funcName, arg) + } + return o.unaryOp(arg) + } +} + +// guardedBinaryOp creates an invocation guard around the provided binary operator, if one is defined. +func (o *OverloadDecl) guardedBinaryOp(funcName string, disableTypeGuards bool) functions.BinaryOp { + if o.binaryOp == nil { + return nil + } + return func(arg1, arg2 ref.Val) ref.Val { + if !o.matchesRuntimeBinarySignature(disableTypeGuards, arg1, arg2) { + return MaybeNoSuchOverload(funcName, arg1, arg2) + } + return o.binaryOp(arg1, arg2) + } +} + +// guardedFunctionOp creates an invocation guard around the provided variadic function binding, if one is provided. +func (o *OverloadDecl) guardedFunctionOp(funcName string, disableTypeGuards bool) functions.FunctionOp { + if o.functionOp == nil { + return nil + } + return func(args ...ref.Val) ref.Val { + if !o.matchesRuntimeSignature(disableTypeGuards, args...) { + return MaybeNoSuchOverload(funcName, args...) + } + return o.functionOp(args...) + } +} + +// matchesRuntimeUnarySignature indicates whether the argument type is runtime assiganble to the overload's expected argument. +func (o *OverloadDecl) matchesRuntimeUnarySignature(disableTypeGuards bool, arg ref.Val) bool { + return matchRuntimeArgType(o.IsNonStrict(), disableTypeGuards, o.ArgTypes()[0], arg) && + matchOperandTrait(o.OperandTrait(), arg) +} + +// matchesRuntimeBinarySignature indicates whether the argument types are runtime assiganble to the overload's expected arguments. +func (o *OverloadDecl) matchesRuntimeBinarySignature(disableTypeGuards bool, arg1, arg2 ref.Val) bool { + return matchRuntimeArgType(o.IsNonStrict(), disableTypeGuards, o.ArgTypes()[0], arg1) && + matchRuntimeArgType(o.IsNonStrict(), disableTypeGuards, o.ArgTypes()[1], arg2) && + matchOperandTrait(o.OperandTrait(), arg1) +} + +// matchesRuntimeSignature indicates whether the argument types are runtime assiganble to the overload's expected arguments. +func (o *OverloadDecl) matchesRuntimeSignature(disableTypeGuards bool, args ...ref.Val) bool { + if len(args) != len(o.ArgTypes()) { + return false + } + if len(args) == 0 { + return true + } + for i, arg := range args { + if !matchRuntimeArgType(o.IsNonStrict(), disableTypeGuards, o.ArgTypes()[i], arg) { + return false + } + } + return matchOperandTrait(o.OperandTrait(), args[0]) +} + +func matchRuntimeArgType(nonStrict, disableTypeGuards bool, argType *types.Type, arg ref.Val) bool { + if nonStrict && (disableTypeGuards || types.IsUnknownOrError(arg)) { + return true + } + if types.IsUnknownOrError(arg) { + return false + } + return disableTypeGuards || argType.IsAssignableRuntimeType(arg) +} + +func matchOperandTrait(trait int, arg ref.Val) bool { + return trait == 0 || arg.Type().HasTrait(trait) || types.IsUnknownOrError(arg) +} + +// OverloadOpt is a functional option for configuring a function overload. +type OverloadOpt func(*OverloadDecl) (*OverloadDecl, error) + +// OverloadExamples configures example expressions for the overload. +func OverloadExamples(examples ...string) OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + o.doc = common.MultilineDescription(examples...) + return o, nil + } +} + +// UnaryBinding provides the implementation of a unary overload. The provided function is protected by a runtime +// type-guard which ensures runtime type agreement between the overload signature and runtime argument types. +func UnaryBinding(binding functions.UnaryOp) OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + if o.hasBinding() { + return nil, fmt.Errorf("overload already has a binding: %s", o.ID()) + } + if len(o.ArgTypes()) != 1 { + return nil, fmt.Errorf("unary function bound to non-unary overload: %s", o.ID()) + } + if o.hasLateBinding { + return nil, fmt.Errorf("overload already has a late binding: %s", o.ID()) + } + o.unaryOp = binding + return o, nil + } +} + +// BinaryBinding provides the implementation of a binary overload. The provided function is protected by a runtime +// type-guard which ensures runtime type agreement between the overload signature and runtime argument types. +func BinaryBinding(binding functions.BinaryOp) OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + if o.hasBinding() { + return nil, fmt.Errorf("overload already has a binding: %s", o.ID()) + } + if len(o.ArgTypes()) != 2 { + return nil, fmt.Errorf("binary function bound to non-binary overload: %s", o.ID()) + } + if o.hasLateBinding { + return nil, fmt.Errorf("overload already has a late binding: %s", o.ID()) + } + o.binaryOp = binding + return o, nil + } +} + +// FunctionBinding provides the implementation of a variadic overload. The provided function is protected by a runtime +// type-guard which ensures runtime type agreement between the overload signature and runtime argument types. +func FunctionBinding(binding functions.FunctionOp) OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + if o.hasBinding() { + return nil, fmt.Errorf("overload already has a binding: %s", o.ID()) + } + if o.hasLateBinding { + return nil, fmt.Errorf("overload already has a late binding: %s", o.ID()) + } + o.functionOp = binding + return o, nil + } +} + +// LateFunctionBinding indicates that the function has a binding which is not known at compile time. +// This is useful for functions which have side-effects or are not deterministically computable. +func LateFunctionBinding() OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + if o.hasBinding() { + return nil, fmt.Errorf("overload already has a binding: %s", o.ID()) + } + o.hasLateBinding = true + return o, nil + } +} + +// OverloadIsNonStrict enables the function to be called with error and unknown argument values. +// +// Note: do not use this option unless absoluately necessary as it should be an uncommon feature. +func OverloadIsNonStrict() OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + o.nonStrict = true + return o, nil + } +} + +// OverloadOperandTrait configures a set of traits which the first argument to the overload must implement in order to be +// successfully invoked. +func OverloadOperandTrait(trait int) OverloadOpt { + return func(o *OverloadDecl) (*OverloadDecl, error) { + o.operandTrait = trait + return o, nil + } +} + +// NewConstant creates a new constant declaration. +func NewConstant(name string, t *types.Type, v ref.Val) *VariableDecl { + return &VariableDecl{name: name, varType: t, value: v} +} + +// NewVariable creates a new variable declaration. +func NewVariable(name string, t *types.Type) *VariableDecl { + return &VariableDecl{name: name, varType: t} +} + +// NewVariableWithDoc creates a new variable declaration with usage documentation. +func NewVariableWithDoc(name string, t *types.Type, doc string) *VariableDecl { + return &VariableDecl{name: name, varType: t, doc: doc} +} + +// VariableDecl defines a variable declaration which may optionally have a constant value. +type VariableDecl struct { + name string + doc string + varType *types.Type + value ref.Val +} + +// Documentation returns name, type, and description for the variable. +func (v *VariableDecl) Documentation() *common.Doc { + if v == nil { + return nil + } + return common.NewVariableDoc(v.Name(), describeCELType(v.Type()), v.Description()) +} + +// Name returns the fully-qualified variable name +func (v *VariableDecl) Name() string { + if v == nil { + return "" + } + return v.name +} + +// Description returns the usage documentation for the variable, if set. +// +// Good usage instructions provide information about the valid formats, ranges, sizes for the variable type. +func (v *VariableDecl) Description() string { + if v == nil { + return "" + } + return v.doc +} + +// Type returns the types.Type value associated with the variable. +func (v *VariableDecl) Type() *types.Type { + if v == nil { + // types.Type is nil-safe + return nil + } + return v.varType +} + +// Value returns the constant value associated with the declaration. +func (v *VariableDecl) Value() ref.Val { + if v == nil { + return nil + } + return v.value +} + +// DeclarationIsEquivalent returns true if one variable declaration has the same name and same type as the input. +func (v *VariableDecl) DeclarationIsEquivalent(other *VariableDecl) bool { + if v == other { + return true + } + return v.Name() == other.Name() && v.Type().IsEquivalentType(other.Type()) +} + +// TypeVariable creates a new type identifier for use within a types.Provider +func TypeVariable(t *types.Type) *VariableDecl { + return NewVariable(t.TypeName(), types.NewTypeTypeWithParam(t)) +} + +// VariableDeclToExprDecl converts a go-native variable declaration into a protobuf-type variable declaration. +func VariableDeclToExprDecl(v *VariableDecl) (*exprpb.Decl, error) { + return variableDeclToExprDecl(v) +} + +// variableDeclToExprDecl converts a go-native variable declaration into a protobuf-type variable declaration. +func variableDeclToExprDecl(v *VariableDecl) (*exprpb.Decl, error) { + varType, err := types.TypeToExprType(v.Type()) + if err != nil { + return nil, err + } + return chkdecls.NewVarWithDoc(v.Name(), varType, v.doc), nil +} + +// FunctionDeclToExprDecl converts a go-native function declaration into a protobuf-typed function declaration. +func FunctionDeclToExprDecl(f *FunctionDecl) (*exprpb.Decl, error) { + return functionDeclToExprDecl(f) +} + +// functionDeclToExprDecl converts a go-native function declaration into a protobuf-typed function declaration. +func functionDeclToExprDecl(f *FunctionDecl) (*exprpb.Decl, error) { + overloads := make([]*exprpb.Decl_FunctionDecl_Overload, len(f.overloads)) + for i, oID := range f.overloadOrdinals { + o := f.overloads[oID] + paramNames := map[string]struct{}{} + argTypes := make([]*exprpb.Type, len(o.ArgTypes())) + for j, a := range o.ArgTypes() { + collectParamNames(paramNames, a) + at, err := types.TypeToExprType(a) + if err != nil { + return nil, err + } + argTypes[j] = at + } + collectParamNames(paramNames, o.ResultType()) + resultType, err := types.TypeToExprType(o.ResultType()) + if err != nil { + return nil, err + } + if len(paramNames) == 0 { + if o.IsMemberFunction() { + overloads[i] = chkdecls.NewInstanceOverload(oID, argTypes, resultType) + } else { + overloads[i] = chkdecls.NewOverload(oID, argTypes, resultType) + } + } else { + params := []string{} + for pn := range paramNames { + params = append(params, pn) + } + if o.IsMemberFunction() { + overloads[i] = chkdecls.NewParameterizedInstanceOverload(oID, argTypes, resultType, params) + } else { + overloads[i] = chkdecls.NewParameterizedOverload(oID, argTypes, resultType, params) + } + } + doc := common.MultilineDescription(o.Examples()...) + overloads[i].Doc = doc + } + return chkdecls.NewFunctionWithDoc(f.Name(), f.Description(), overloads...), nil +} + +func collectParamNames(paramNames map[string]struct{}, arg *types.Type) { + if arg.Kind() == types.TypeParamKind { + paramNames[arg.TypeName()] = struct{}{} + } + for _, param := range arg.Parameters() { + collectParamNames(paramNames, param) + } +} + +func formatSignature(fnName string, o *OverloadDecl) string { + if opName, isOperator := operators.FindReverse(fnName); isOperator { + if opName == "" { + opName = fnName + } + return formatOperator(opName, o) + } + return formatCall(fnName, o) +} + +func formatOperator(opName string, o *OverloadDecl) string { + args := o.ArgTypes() + argTypes := make([]string, len(o.ArgTypes())) + for j, a := range args { + argTypes[j] = describeCELType(a) + } + ret := describeCELType(o.ResultType()) + switch len(args) { + case 1: + return fmt.Sprintf("%s%s -> %s", opName, argTypes[0], ret) + case 2: + if opName == operators.Index { + return fmt.Sprintf("%s[%s] -> %s", argTypes[0], argTypes[1], ret) + } + return fmt.Sprintf("%s %s %s -> %s", argTypes[0], opName, argTypes[1], ret) + default: + if opName == operators.Conditional { + return fmt.Sprint("bool ? : -> ") + } + return formatCall(opName, o) + } +} + +func formatCall(funcName string, o *OverloadDecl) string { + args := make([]string, len(o.ArgTypes())) + ret := describeCELType(o.ResultType()) + for j, a := range o.ArgTypes() { + args[j] = describeCELType(a) + } + if o.IsMemberFunction() { + target := args[0] + args = args[1:] + return fmt.Sprintf("%s.%s(%s) -> %s", target, funcName, strings.Join(args, ", "), ret) + } + return fmt.Sprintf("%s(%s) -> %s", funcName, strings.Join(args, ", "), ret) +} + +func describeCELType(t *types.Type) string { + if t.Kind() == types.TypeKind { + return "type" + } + return t.String() +} + +var ( + emptyArgs []*types.Type +) diff --git a/vendor/github.com/google/cel-go/common/doc.go b/vendor/github.com/google/cel-go/common/doc.go new file mode 100644 index 0000000000..06eae3642a --- /dev/null +++ b/vendor/github.com/google/cel-go/common/doc.go @@ -0,0 +1,171 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package common defines types and utilities common to expression parsing, +// checking, and interpretation +package common + +import ( + "strings" + "unicode" +) + +// DocKind indicates the type of documentation element. +type DocKind int + +const ( + // DocEnv represents environment variable documentation. + DocEnv DocKind = iota + 1 + // DocFunction represents function documentation. + DocFunction + // DocOverload represents function overload documentation. + DocOverload + // DocVariable represents variable documentation. + DocVariable + // DocMacro represents macro documentation. + DocMacro + // DocExample represents example documentation. + DocExample +) + +// Doc holds the documentation details for a specific program element like +// a variable, function, macro, or example. +type Doc struct { + // Kind specifies the type of documentation element (e.g., Function, Variable). + Kind DocKind + + // Name is the identifier of the documented element (e.g., function name, variable name). + Name string + + // Type is the data type associated with the element, primarily used for variables. + Type string + + // Signature represents the function or overload signature. + Signature string + + // Description holds the textual description of the element, potentially spanning multiple lines. + Description string + + // Children holds nested documentation elements, such as overloads for a function + // or examples for a function/macro. + Children []*Doc +} + +// MultilineDescription combines multiple lines into a newline separated string. +func MultilineDescription(lines ...string) string { + return strings.Join(lines, "\n") +} + +// ParseDescription takes a single string containing newline characters and splits +// it into a multiline description. All empty lines will be skipped. +// +// Returns an empty string if the input string is empty. +func ParseDescription(doc string) string { + var lines []string + if len(doc) != 0 { + // Split the input string by newline characters. + for _, line := range strings.Split(doc, "\n") { + l := strings.TrimRightFunc(line, unicode.IsSpace) + if len(l) == 0 { + continue + } + lines = append(lines, l) + } + } + // Return an empty slice if the input is empty. + return MultilineDescription(lines...) +} + +// ParseDescriptions splits a documentation string into multiple multi-line description +// sections, using blank lines as delimiters. +func ParseDescriptions(doc string) []string { + var examples []string + if len(doc) != 0 { + lines := strings.Split(doc, "\n") + lineStart := 0 + for i, l := range lines { + // Trim trailing whitespace to identify effectively blank lines. + l = strings.TrimRightFunc(l, unicode.IsSpace) + // If a line is blank, it marks the end of the current section. + if len(l) == 0 { + // Start the next section after the blank line. + ex := lines[lineStart:i] + if len(ex) != 0 { + examples = append(examples, MultilineDescription(ex...)) + } + lineStart = i + 1 + } + } + // Append the last section if it wasn't terminated by a blank line. + if lineStart < len(lines) { + examples = append(examples, MultilineDescription(lines[lineStart:]...)) + } + } + return examples +} + +// NewVariableDoc creates a new Doc struct specifically for documenting a variable. +func NewVariableDoc(name, celType, description string) *Doc { + return &Doc{ + Kind: DocVariable, + Name: name, + Type: celType, + Description: ParseDescription(description), + } +} + +// NewFunctionDoc creates a new Doc struct for documenting a function. +func NewFunctionDoc(name, description string, overloads ...*Doc) *Doc { + return &Doc{ + Kind: DocFunction, + Name: name, + Description: ParseDescription(description), + Children: overloads, + } +} + +// NewOverloadDoc creates a new Doc struct for a function example. +func NewOverloadDoc(id, signature string, examples ...*Doc) *Doc { + return &Doc{ + Kind: DocOverload, + Name: id, + Signature: signature, + Children: examples, + } +} + +// NewMacroDoc creates a new Doc struct for documenting a macro. +func NewMacroDoc(name, description string, examples ...*Doc) *Doc { + return &Doc{ + Kind: DocMacro, + Name: name, + Description: ParseDescription(description), + Children: examples, + } +} + +// NewExampleDoc creates a new Doc struct specifically for holding an example. +func NewExampleDoc(ex string) *Doc { + return &Doc{ + Kind: DocExample, + Description: ex, + } +} + +// Documentor is an interface for types that can provide their own documentation. +type Documentor interface { + // Documentation returns the documentation coded by the DocKind to assist + // with text formatting. + Documentation() *Doc +} diff --git a/vendor/github.com/google/cel-go/common/env/BUILD.bazel b/vendor/github.com/google/cel-go/common/env/BUILD.bazel new file mode 100644 index 0000000000..aebe1e544c --- /dev/null +++ b/vendor/github.com/google/cel-go/common/env/BUILD.bazel @@ -0,0 +1,50 @@ +# Copyright 2025 Google LLC +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "env.go", + ], + importpath = "github.com/google/cel-go/common/env", + deps = [ + "//common:go_default_library", + "//common/decls:go_default_library", + "//common/types:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "env_test.go", + ], + data = glob(["testdata/**"]), + embed = [":go_default_library"], + deps = [ + "//common/decls:go_default_library", + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/types:go_default_library", + "@in_gopkg_yaml_v3//:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/env/env.go b/vendor/github.com/google/cel-go/common/env/env.go new file mode 100644 index 0000000000..d848860c2c --- /dev/null +++ b/vendor/github.com/google/cel-go/common/env/env.go @@ -0,0 +1,887 @@ +// Copyright 2025 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package env provides a representation of a CEL environment. +package env + +import ( + "errors" + "fmt" + "math" + "strconv" + "strings" + + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/types" +) + +// NewConfig creates an instance of a YAML serializable CEL environment configuration. +func NewConfig(name string) *Config { + return &Config{ + Name: name, + } +} + +// Config represents a serializable form of the CEL environment configuration. +// +// Note: custom validations, feature flags, and performance tuning parameters are not (yet) +// considered part of the core CEL environment configuration and should be managed separately +// until a common convention for such settings is developed. +type Config struct { + Name string `yaml:"name,omitempty"` + Description string `yaml:"description,omitempty"` + Container string `yaml:"container,omitempty"` + Imports []*Import `yaml:"imports,omitempty"` + StdLib *LibrarySubset `yaml:"stdlib,omitempty"` + Extensions []*Extension `yaml:"extensions,omitempty"` + ContextVariable *ContextVariable `yaml:"context_variable,omitempty"` + Variables []*Variable `yaml:"variables,omitempty"` + Functions []*Function `yaml:"functions,omitempty"` + Validators []*Validator `yaml:"validators,omitempty"` + Features []*Feature `yaml:"features,omitempty"` +} + +// Validate validates the whole configuration is well-formed. +func (c *Config) Validate() error { + if c == nil { + return nil + } + var errs []error + for _, imp := range c.Imports { + if err := imp.Validate(); err != nil { + errs = append(errs, err) + } + } + if err := c.StdLib.Validate(); err != nil { + errs = append(errs, err) + } + for _, ext := range c.Extensions { + if err := ext.Validate(); err != nil { + errs = append(errs, err) + } + } + if err := c.ContextVariable.Validate(); err != nil { + errs = append(errs, err) + } + if c.ContextVariable != nil && len(c.Variables) != 0 { + errs = append(errs, errors.New("invalid config: either context variable or variables may be set, but not both")) + } + for _, v := range c.Variables { + if err := v.Validate(); err != nil { + errs = append(errs, err) + } + } + for _, fn := range c.Functions { + if err := fn.Validate(); err != nil { + errs = append(errs, err) + } + } + for _, feat := range c.Features { + if err := feat.Validate(); err != nil { + errs = append(errs, err) + } + } + for _, val := range c.Validators { + if err := val.Validate(); err != nil { + errs = append(errs, err) + } + } + return errors.Join(errs...) +} + +// SetContainer configures the container name for this configuration. +func (c *Config) SetContainer(container string) *Config { + c.Container = container + return c +} + +// AddVariableDecls adds one or more variables to the config, converting them to serializable values first. +// +// VariableDecl inputs are expected to be well-formed. +func (c *Config) AddVariableDecls(vars ...*decls.VariableDecl) *Config { + convVars := make([]*Variable, len(vars)) + for i, v := range vars { + if v == nil { + continue + } + cv := NewVariable(v.Name(), SerializeTypeDesc(v.Type())) + cv.Description = v.Description() + convVars[i] = cv + } + return c.AddVariables(convVars...) +} + +// AddVariables adds one or more vairables to the config. +func (c *Config) AddVariables(vars ...*Variable) *Config { + c.Variables = append(c.Variables, vars...) + return c +} + +// SetContextVariable configures the ContextVariable for this configuration. +func (c *Config) SetContextVariable(ctx *ContextVariable) *Config { + c.ContextVariable = ctx + return c +} + +// AddFunctionDecls adds one or more functions to the config, converting them to serializable values first. +// +// FunctionDecl inputs are expected to be well-formed. +func (c *Config) AddFunctionDecls(funcs ...*decls.FunctionDecl) *Config { + convFuncs := make([]*Function, len(funcs)) + for i, fn := range funcs { + if fn == nil { + continue + } + overloads := make([]*Overload, 0, len(fn.OverloadDecls())) + for _, o := range fn.OverloadDecls() { + overloadID := o.ID() + args := make([]*TypeDesc, 0, len(o.ArgTypes())) + for _, a := range o.ArgTypes() { + args = append(args, SerializeTypeDesc(a)) + } + ret := SerializeTypeDesc(o.ResultType()) + var overload *Overload + if o.IsMemberFunction() { + overload = NewMemberOverload(overloadID, args[0], args[1:], ret) + } else { + overload = NewOverload(overloadID, args, ret) + } + exampleCount := len(o.Examples()) + if exampleCount > 0 { + overload.Examples = o.Examples() + } + overloads = append(overloads, overload) + } + cf := NewFunction(fn.Name(), overloads...) + cf.Description = fn.Description() + convFuncs[i] = cf + } + return c.AddFunctions(convFuncs...) +} + +// AddFunctions adds one or more functions to the config. +func (c *Config) AddFunctions(funcs ...*Function) *Config { + c.Functions = append(c.Functions, funcs...) + return c +} + +// SetStdLib configures the LibrarySubset for the standard library. +func (c *Config) SetStdLib(subset *LibrarySubset) *Config { + c.StdLib = subset + return c +} + +// AddImports appends a set of imports to the config. +func (c *Config) AddImports(imps ...*Import) *Config { + c.Imports = append(c.Imports, imps...) + return c +} + +// AddExtensions appends a set of extensions to the config. +func (c *Config) AddExtensions(exts ...*Extension) *Config { + c.Extensions = append(c.Extensions, exts...) + return c +} + +// AddValidators appends one or more validators to the config. +func (c *Config) AddValidators(vals ...*Validator) *Config { + c.Validators = append(c.Validators, vals...) + return c +} + +// AddFeatures appends one or more features to the config. +func (c *Config) AddFeatures(feats ...*Feature) *Config { + c.Features = append(c.Features, feats...) + return c +} + +// NewImport returns a serializable import value from the qualified type name. +func NewImport(name string) *Import { + return &Import{Name: name} +} + +// Import represents a type name that will be appreviated by its simple name using +// the cel.Abbrevs() option. +type Import struct { + Name string `yaml:"name"` +} + +// Validate validates the import configuration is well-formed. +func (imp *Import) Validate() error { + if imp == nil { + return errors.New("invalid import: nil") + } + if imp.Name == "" { + return errors.New("invalid import: missing type name") + } + return nil +} + +// NewVariable returns a serializable variable from a name and type definition +func NewVariable(name string, t *TypeDesc) *Variable { + return NewVariableWithDoc(name, t, "") +} + +// NewVariableWithDoc returns a serializable variable from a name, type definition, and doc string. +func NewVariableWithDoc(name string, t *TypeDesc, doc string) *Variable { + return &Variable{Name: name, TypeDesc: t, Description: doc} +} + +// Variable represents a typed variable declaration which will be published via the +// cel.VariableDecls() option. +type Variable struct { + Name string `yaml:"name"` + Description string `yaml:"description,omitempty"` + + // Type represents the type declaration for the variable. + // + // Deprecated: use the embedded *TypeDesc fields directly. + Type *TypeDesc `yaml:"type,omitempty"` + + // TypeDesc is an embedded set of fields allowing for the specification of the Variable type. + *TypeDesc `yaml:",inline"` +} + +// Validate validates the variable configuration is well-formed. +func (v *Variable) Validate() error { + if v == nil { + return errors.New("invalid variable: nil") + } + if v.Name == "" { + return errors.New("invalid variable: missing variable name") + } + if err := v.GetType().Validate(); err != nil { + return fmt.Errorf("invalid variable %q: %w", v.Name, err) + } + return nil +} + +// GetType returns the variable type description. +// +// Note, if both the embedded TypeDesc and the field Type are non-nil, the embedded TypeDesc will +// take precedence. +func (v *Variable) GetType() *TypeDesc { + if v == nil { + return nil + } + if v.TypeDesc != nil { + return v.TypeDesc + } + if v.Type != nil { + return v.Type + } + return nil +} + +// AsCELVariable converts the serializable form of the Variable into a CEL environment declaration. +func (v *Variable) AsCELVariable(tp types.Provider) (*decls.VariableDecl, error) { + if err := v.Validate(); err != nil { + return nil, err + } + t, err := v.GetType().AsCELType(tp) + if err != nil { + return nil, fmt.Errorf("invalid variable %q: %w", v.Name, err) + } + return decls.NewVariableWithDoc(v.Name, t, v.Description), nil +} + +// NewContextVariable returns a serializable context variable with a specific type name. +func NewContextVariable(typeName string) *ContextVariable { + return &ContextVariable{TypeName: typeName} +} + +// ContextVariable represents a structured message whose fields are to be treated as the top-level +// variable identifiers within CEL expressions. +type ContextVariable struct { + // TypeName represents the fully qualified typename of the context variable. + // Currently, only protobuf types are supported. + TypeName string `yaml:"type_name"` +} + +// Validate validates the context-variable configuration is well-formed. +func (ctx *ContextVariable) Validate() error { + if ctx == nil { + return nil + } + if ctx.TypeName == "" { + return errors.New("invalid context variable: missing type name") + } + return nil +} + +// NewFunction creates a serializable function and overload set. +func NewFunction(name string, overloads ...*Overload) *Function { + return &Function{Name: name, Overloads: overloads} +} + +// NewFunctionWithDoc creates a serializable function and overload set. +func NewFunctionWithDoc(name, doc string, overloads ...*Overload) *Function { + return &Function{Name: name, Description: doc, Overloads: overloads} +} + +// Function represents the serializable format of a function and its overloads. +type Function struct { + Name string `yaml:"name"` + Description string `yaml:"description,omitempty"` + Overloads []*Overload `yaml:"overloads,omitempty"` +} + +// Validate validates the function configuration is well-formed. +func (fn *Function) Validate() error { + if fn == nil { + return errors.New("invalid function: nil") + } + if fn.Name == "" { + return errors.New("invalid function: missing function name") + } + if len(fn.Overloads) == 0 { + return fmt.Errorf("invalid function %q: missing overloads", fn.Name) + } + var errs []error + for _, o := range fn.Overloads { + if err := o.Validate(); err != nil { + errs = append(errs, fmt.Errorf("invalid function %q: %w", fn.Name, err)) + } + } + return errors.Join(errs...) +} + +// AsCELFunction converts the serializable form of the Function into CEL environment declaration. +func (fn *Function) AsCELFunction(tp types.Provider) (*decls.FunctionDecl, error) { + if err := fn.Validate(); err != nil { + return nil, err + } + opts := make([]decls.FunctionOpt, 0, len(fn.Overloads)+1) + for _, o := range fn.Overloads { + opt, err := o.AsFunctionOption(tp) + opts = append(opts, opt) + if err != nil { + return nil, fmt.Errorf("invalid function %q: %w", fn.Name, err) + } + } + if len(fn.Description) != 0 { + opts = append(opts, decls.FunctionDocs(fn.Description)) + } + return decls.NewFunction(fn.Name, opts...) +} + +// NewOverload returns a new serializable representation of a global overload. +func NewOverload(id string, args []*TypeDesc, ret *TypeDesc, examples ...string) *Overload { + return &Overload{ID: id, Args: args, Return: ret, Examples: examples} +} + +// NewMemberOverload returns a new serializable representation of a member (receiver) overload. +func NewMemberOverload(id string, target *TypeDesc, args []*TypeDesc, ret *TypeDesc, examples ...string) *Overload { + return &Overload{ID: id, Target: target, Args: args, Return: ret, Examples: examples} +} + +// Overload represents the serializable format of a function overload. +type Overload struct { + ID string `yaml:"id"` + Examples []string `yaml:"examples,omitempty"` + Target *TypeDesc `yaml:"target,omitempty"` + Args []*TypeDesc `yaml:"args,omitempty"` + Return *TypeDesc `yaml:"return,omitempty"` +} + +// Validate validates the overload configuration is well-formed. +func (od *Overload) Validate() error { + if od == nil { + return errors.New("invalid overload: nil") + } + if od.ID == "" { + return errors.New("invalid overload: missing overload id") + } + var errs []error + if od.Target != nil { + if err := od.Target.Validate(); err != nil { + errs = append(errs, fmt.Errorf("invalid overload %q target: %w", od.ID, err)) + } + } + for i, arg := range od.Args { + if err := arg.Validate(); err != nil { + errs = append(errs, fmt.Errorf("invalid overload %q arg[%d]: %w", od.ID, i, err)) + } + } + if err := od.Return.Validate(); err != nil { + errs = append(errs, fmt.Errorf("invalid overload %q return: %w", od.ID, err)) + } + return errors.Join(errs...) +} + +// AsFunctionOption converts the serializable form of the Overload into a function declaration option. +func (od *Overload) AsFunctionOption(tp types.Provider) (decls.FunctionOpt, error) { + if err := od.Validate(); err != nil { + return nil, err + } + args := make([]*types.Type, len(od.Args)) + var err error + var errs []error + for i, a := range od.Args { + args[i], err = a.AsCELType(tp) + if err != nil { + errs = append(errs, err) + } + } + result, err := od.Return.AsCELType(tp) + if err != nil { + errs = append(errs, err) + } + if od.Target != nil { + t, err := od.Target.AsCELType(tp) + if err != nil { + return nil, errors.Join(append(errs, err)...) + } + args = append([]*types.Type{t}, args...) + return decls.MemberOverload(od.ID, args, result), nil + } + if len(errs) != 0 { + return nil, errors.Join(errs...) + } + return decls.Overload(od.ID, args, result, decls.OverloadExamples(od.Examples...)), nil +} + +// NewExtension creates a serializable Extension from a name and version string. +func NewExtension(name string, version uint32) *Extension { + versionString := "latest" + if version < math.MaxUint32 { + versionString = strconv.FormatUint(uint64(version), 10) + } + return &Extension{ + Name: name, + Version: versionString, + } +} + +// Extension represents a named and optionally versioned extension library configured in the environment. +type Extension struct { + // Name is either the LibraryName() or some short-hand simple identifier which is understood by the config-handler. + Name string `yaml:"name"` + + // Version may either be an unsigned long value or the string 'latest'. If empty, the value is treated as '0'. + Version string `yaml:"version,omitempty"` +} + +// Validate validates the extension configuration is well-formed. +func (e *Extension) Validate() error { + _, err := e.VersionNumber() + return err +} + +// VersionNumber returns the parsed version string, or an error if the version cannot be parsed. +func (e *Extension) VersionNumber() (uint32, error) { + if e == nil { + return 0, fmt.Errorf("invalid extension: nil") + } + if e.Name == "" { + return 0, fmt.Errorf("invalid extension: missing name") + } + if e.Version == "latest" { + return math.MaxUint32, nil + } + if e.Version == "" { + return 0, nil + } + ver, err := strconv.ParseUint(e.Version, 10, 32) + if err != nil { + return 0, fmt.Errorf("invalid extension %q version: %w", e.Name, err) + } + return uint32(ver), nil +} + +// NewLibrarySubset returns an empty library subsetting config which permits all library features. +func NewLibrarySubset() *LibrarySubset { + return &LibrarySubset{} +} + +// LibrarySubset indicates a subset of the macros and function supported by a subsettable library. +type LibrarySubset struct { + // Disabled indicates whether the library has been disabled, typically only used for + // default-enabled libraries like stdlib. + Disabled bool `yaml:"disabled,omitempty"` + + // DisableMacros disables macros for the given library. + DisableMacros bool `yaml:"disable_macros,omitempty"` + + // IncludeMacros specifies a set of macro function names to include in the subset. + IncludeMacros []string `yaml:"include_macros,omitempty"` + + // ExcludeMacros specifies a set of macro function names to exclude from the subset. + // Note: if IncludeMacros is non-empty, then ExcludeFunctions is ignored. + ExcludeMacros []string `yaml:"exclude_macros,omitempty"` + + // IncludeFunctions specifies a set of functions to include in the subset. + // + // Note: the overloads specified in the subset need only specify their ID. + // Note: if IncludeFunctions is non-empty, then ExcludeFunctions is ignored. + IncludeFunctions []*Function `yaml:"include_functions,omitempty"` + + // ExcludeFunctions specifies the set of functions to exclude from the subset. + // + // Note: the overloads specified in the subset need only specify their ID. + ExcludeFunctions []*Function `yaml:"exclude_functions,omitempty"` +} + +// Validate validates the library configuration is well-formed. +// +// For example, setting both the IncludeMacros and ExcludeMacros together could be confusing +// and create a broken expectation, likewise for IncludeFunctions and ExcludeFunctions. +func (lib *LibrarySubset) Validate() error { + if lib == nil { + return nil + } + var errs []error + if len(lib.IncludeMacros) != 0 && len(lib.ExcludeMacros) != 0 { + errs = append(errs, errors.New("invalid subset: cannot both include and exclude macros")) + } + if len(lib.IncludeFunctions) != 0 && len(lib.ExcludeFunctions) != 0 { + errs = append(errs, errors.New("invalid subset: cannot both include and exclude functions")) + } + return errors.Join(errs...) +} + +// SubsetFunction produces a function declaration which matches the supported subset, or nil +// if the function is not supported by the LibrarySubset. +// +// For IncludeFunctions, if the function does not specify a set of overloads to include, the +// whole function definition is included. If overloads are set, then a new function which +// includes only the specified overloads is produced. +// +// For ExcludeFunctions, if the function does not specify a set of overloads to exclude, the +// whole function definition is excluded. If overloads are set, then a new function which +// includes only the permitted overloads is produced. +func (lib *LibrarySubset) SubsetFunction(fn *decls.FunctionDecl) (*decls.FunctionDecl, bool) { + // When lib is null, it should indicate that all values are included in the subset. + if lib == nil { + return fn, true + } + if lib.Disabled { + return nil, false + } + if len(lib.IncludeFunctions) != 0 { + for _, include := range lib.IncludeFunctions { + if include.Name != fn.Name() { + continue + } + if len(include.Overloads) == 0 { + return fn, true + } + overloadIDs := make([]string, len(include.Overloads)) + for i, o := range include.Overloads { + overloadIDs[i] = o.ID + } + return fn.Subset(decls.IncludeOverloads(overloadIDs...)), true + } + return nil, false + } + if len(lib.ExcludeFunctions) != 0 { + for _, exclude := range lib.ExcludeFunctions { + if exclude.Name != fn.Name() { + continue + } + if len(exclude.Overloads) == 0 { + return nil, false + } + overloadIDs := make([]string, len(exclude.Overloads)) + for i, o := range exclude.Overloads { + overloadIDs[i] = o.ID + } + return fn.Subset(decls.ExcludeOverloads(overloadIDs...)), true + } + return fn, true + } + return fn, true +} + +// SubsetMacro indicates whether the macro function should be included in the library subset. +func (lib *LibrarySubset) SubsetMacro(macroFunction string) bool { + // When lib is null, it should indicate that all values are included in the subset. + if lib == nil { + return true + } + if lib.Disabled || lib.DisableMacros { + return false + } + if len(lib.IncludeMacros) != 0 { + for _, name := range lib.IncludeMacros { + if name == macroFunction { + return true + } + } + return false + } + if len(lib.ExcludeMacros) != 0 { + for _, name := range lib.ExcludeMacros { + if name == macroFunction { + return false + } + } + return true + } + return true +} + +// SetDisabled disables or enables the library. +func (lib *LibrarySubset) SetDisabled(value bool) *LibrarySubset { + lib.Disabled = value + return lib +} + +// SetDisableMacros disables the macros for the library. +func (lib *LibrarySubset) SetDisableMacros(value bool) *LibrarySubset { + lib.DisableMacros = value + return lib +} + +// AddIncludedMacros allow-lists one or more macros by function name. +// +// Note, this option will override any excluded macros. +func (lib *LibrarySubset) AddIncludedMacros(macros ...string) *LibrarySubset { + lib.IncludeMacros = append(lib.IncludeMacros, macros...) + return lib +} + +// AddExcludedMacros deny-lists one or more macros by function name. +func (lib *LibrarySubset) AddExcludedMacros(macros ...string) *LibrarySubset { + lib.ExcludeMacros = append(lib.ExcludeMacros, macros...) + return lib +} + +// AddIncludedFunctions allow-lists one or more functions from the subset. +// +// Note, this option will override any excluded functions. +func (lib *LibrarySubset) AddIncludedFunctions(funcs ...*Function) *LibrarySubset { + lib.IncludeFunctions = append(lib.IncludeFunctions, funcs...) + return lib +} + +// AddExcludedFunctions deny-lists one or more functions from the subset. +func (lib *LibrarySubset) AddExcludedFunctions(funcs ...*Function) *LibrarySubset { + lib.ExcludeFunctions = append(lib.ExcludeFunctions, funcs...) + return lib +} + +// NewValidator returns a named Validator instance. +func NewValidator(name string) *Validator { + return &Validator{Name: name} +} + +// Validator represents a named validator with an optional map-based configuration object. +// +// Note: the map-keys must directly correspond to the internal representation of the original +// validator, and should only use primitive scalar types as values at this time. +type Validator struct { + Name string `yaml:"name"` + Config map[string]any `yaml:"config,omitempty"` +} + +// Validate validates the configuration of the validator object. +func (v *Validator) Validate() error { + if v == nil { + return errors.New("invalid validator: nil") + } + if v.Name == "" { + return errors.New("invalid validator: missing name") + } + return nil +} + +// SetConfig sets the set of map key-value pairs associated with this validator's configuration. +func (v *Validator) SetConfig(config map[string]any) *Validator { + v.Config = config + return v +} + +// ConfigValue retrieves the value associated with the config key name, if one exists. +func (v *Validator) ConfigValue(name string) (any, bool) { + if v == nil { + return nil, false + } + value, found := v.Config[name] + return value, found +} + +// NewFeature creates a new feature flag with a boolean enablement flag. +func NewFeature(name string, enabled bool) *Feature { + return &Feature{Name: name, Enabled: enabled} +} + +// Feature represents a named boolean feature flag supported by CEL. +type Feature struct { + Name string `yaml:"name"` + Enabled bool `yaml:"enabled"` +} + +// Validate validates whether the feature is well-configured. +func (feat *Feature) Validate() error { + if feat == nil { + return errors.New("invalid feature: nil") + } + if feat.Name == "" { + return errors.New("invalid feature: missing name") + } + return nil +} + +// NewTypeDesc describes a simple or complex type with parameters. +func NewTypeDesc(typeName string, params ...*TypeDesc) *TypeDesc { + return &TypeDesc{TypeName: typeName, Params: params} +} + +// NewTypeParam describe a type-param type. +func NewTypeParam(paramName string) *TypeDesc { + return &TypeDesc{TypeName: paramName, IsTypeParam: true} +} + +// TypeDesc represents the serializable format of a CEL *types.Type value. +type TypeDesc struct { + TypeName string `yaml:"type_name"` + Params []*TypeDesc `yaml:"params,omitempty"` + IsTypeParam bool `yaml:"is_type_param,omitempty"` +} + +// String implements the strings.Stringer interface method. +func (td *TypeDesc) String() string { + ps := make([]string, len(td.Params)) + for i, p := range td.Params { + ps[i] = p.String() + } + typeName := td.TypeName + if len(ps) != 0 { + typeName = fmt.Sprintf("%s(%s)", typeName, strings.Join(ps, ",")) + } + return typeName +} + +// Validate validates the type configuration is well-formed. +func (td *TypeDesc) Validate() error { + if td == nil { + return errors.New("invalid type: nil") + } + if td.TypeName == "" { + return errors.New("invalid type: missing type name") + } + if td.IsTypeParam && len(td.Params) != 0 { + return errors.New("invalid type: param type cannot have parameters") + } + switch td.TypeName { + case "list": + if len(td.Params) != 1 { + return fmt.Errorf("invalid type: list expects 1 parameter, got %d", len(td.Params)) + } + return td.Params[0].Validate() + case "map": + if len(td.Params) != 2 { + return fmt.Errorf("invalid type: map expects 2 parameters, got %d", len(td.Params)) + } + if err := td.Params[0].Validate(); err != nil { + return err + } + if err := td.Params[1].Validate(); err != nil { + return err + } + case "optional_type": + if len(td.Params) != 1 { + return fmt.Errorf("invalid type: optional_type expects 1 parameter, got %d", len(td.Params)) + } + return td.Params[0].Validate() + default: + } + return nil +} + +// AsCELType converts the serializable object to a *types.Type value. +func (td *TypeDesc) AsCELType(tp types.Provider) (*types.Type, error) { + err := td.Validate() + if err != nil { + return nil, err + } + switch td.TypeName { + case "dyn": + return types.DynType, nil + case "map": + kt, err := td.Params[0].AsCELType(tp) + if err != nil { + return nil, err + } + vt, err := td.Params[1].AsCELType(tp) + if err != nil { + return nil, err + } + return types.NewMapType(kt, vt), nil + case "list": + et, err := td.Params[0].AsCELType(tp) + if err != nil { + return nil, err + } + return types.NewListType(et), nil + case "optional_type": + et, err := td.Params[0].AsCELType(tp) + if err != nil { + return nil, err + } + return types.NewOptionalType(et), nil + default: + if td.IsTypeParam { + return types.NewTypeParamType(td.TypeName), nil + } + if msgType, found := tp.FindStructType(td.TypeName); found { + // First parameter is the type name. + return msgType.Parameters()[0], nil + } + t, found := tp.FindIdent(td.TypeName) + if !found { + return nil, fmt.Errorf("undefined type name: %q", td.TypeName) + } + _, ok := t.(*types.Type) + if ok && len(td.Params) == 0 { + return t.(*types.Type), nil + } + params := make([]*types.Type, len(td.Params)) + for i, p := range td.Params { + params[i], err = p.AsCELType(tp) + if err != nil { + return nil, err + } + } + return types.NewOpaqueType(td.TypeName, params...), nil + } +} + +// SerializeTypeDesc converts a CEL native *types.Type to a serializable TypeDesc. +func SerializeTypeDesc(t *types.Type) *TypeDesc { + typeName := t.TypeName() + if t.Kind() == types.TypeParamKind { + return NewTypeParam(typeName) + } + if t != types.NullType && t.IsAssignableType(types.NullType) { + if wrapperTypeName, found := wrapperTypes[t.Kind()]; found { + return NewTypeDesc(wrapperTypeName) + } + } + var params []*TypeDesc + for _, p := range t.Parameters() { + params = append(params, SerializeTypeDesc(p)) + } + return NewTypeDesc(typeName, params...) +} + +var wrapperTypes = map[types.Kind]string{ + types.BoolKind: "google.protobuf.BoolValue", + types.BytesKind: "google.protobuf.BytesValue", + types.DoubleKind: "google.protobuf.DoubleValue", + types.IntKind: "google.protobuf.Int64Value", + types.StringKind: "google.protobuf.StringValue", + types.UintKind: "google.protobuf.UInt64Value", +} diff --git a/vendor/github.com/google/cel-go/common/error.go b/vendor/github.com/google/cel-go/common/error.go new file mode 100644 index 0000000000..0cf21345e6 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/error.go @@ -0,0 +1,74 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package common + +import ( + "fmt" + "strings" + "unicode/utf8" +) + +// NewError creates an error associated with an expression id with the given message at the given location. +func NewError(id int64, message string, location Location) *Error { + return &Error{Message: message, Location: location, ExprID: id} +} + +// Error type which references an expression id, a location within source, and a message. +type Error struct { + Location Location + Message string + ExprID int64 +} + +const ( + dot = "." + ind = "^" + wideDot = "\uff0e" + wideInd = "\uff3e" + + // maxSnippetLength is the largest number of characters which can be rendered in an error message snippet. + maxSnippetLength = 16384 +) + +// ToDisplayString decorates the error message with the source location. +func (e *Error) ToDisplayString(source Source) string { + var result = fmt.Sprintf("ERROR: %s:%d:%d: %s", + source.Description(), + e.Location.Line(), + e.Location.Column()+1, // add one to the 0-based column for display + e.Message) + if snippet, found := source.Snippet(e.Location.Line()); found && len(snippet) <= maxSnippetLength { + snippet := strings.Replace(snippet, "\t", " ", -1) + srcLine := "\n | " + snippet + var bytes = []byte(snippet) + var indLine = "\n | " + for i := 0; i < e.Location.Column() && len(bytes) > 0; i++ { + _, sz := utf8.DecodeRune(bytes) + bytes = bytes[sz:] + if sz > 1 { + indLine += wideDot + } else { + indLine += dot + } + } + if _, sz := utf8.DecodeRune(bytes); sz > 1 { + indLine += wideInd + } else { + indLine += ind + } + result += srcLine + indLine + } + return result +} diff --git a/vendor/github.com/google/cel-go/common/errors.go b/vendor/github.com/google/cel-go/common/errors.go new file mode 100644 index 0000000000..c8865df8cd --- /dev/null +++ b/vendor/github.com/google/cel-go/common/errors.go @@ -0,0 +1,112 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package common + +import ( + "fmt" + "sort" + "strings" +) + +// Errors type which contains a list of errors observed during parsing. +type Errors struct { + errors []*Error + source Source + numErrors int + maxErrorsToReport int +} + +// NewErrors creates a new instance of the Errors type. +func NewErrors(source Source) *Errors { + src := source + if src == nil { + src = NewTextSource("") + } + return &Errors{ + errors: []*Error{}, + source: src, + maxErrorsToReport: 100, + } +} + +// ReportError records an error at a source location. +func (e *Errors) ReportError(l Location, format string, args ...any) { + e.ReportErrorAtID(0, l, format, args...) +} + +// ReportErrorString records an error at a source location. +func (e *Errors) ReportErrorString(l Location, message string) { + e.ReportErrorAtID(0, l, "%s", message) +} + +// ReportErrorAtID records an error at a source location and expression id. +func (e *Errors) ReportErrorAtID(id int64, l Location, format string, args ...any) { + e.numErrors++ + if e.numErrors > e.maxErrorsToReport { + return + } + err := &Error{ + ExprID: id, + Location: l, + Message: fmt.Sprintf(format, args...), + } + e.errors = append(e.errors, err) +} + +// GetErrors returns the list of observed errors. +func (e *Errors) GetErrors() []*Error { + return e.errors[:] +} + +// Append creates a new Errors object with the current and input errors. +func (e *Errors) Append(errs []*Error) *Errors { + return &Errors{ + errors: append(e.errors[:], errs...), + source: e.source, + numErrors: e.numErrors + len(errs), + maxErrorsToReport: e.maxErrorsToReport, + } +} + +// ToDisplayString returns the error set to a newline delimited string. +func (e *Errors) ToDisplayString() string { + errorsInString := e.maxErrorsToReport + if e.numErrors > e.maxErrorsToReport { + // add one more error to indicate the number of errors truncated. + errorsInString++ + } else { + // otherwise the error set will just contain the number of errors. + errorsInString = e.numErrors + } + + result := make([]string, errorsInString) + sort.SliceStable(e.errors, func(i, j int) bool { + ei := e.errors[i].Location + ej := e.errors[j].Location + return ei.Line() < ej.Line() || + (ei.Line() == ej.Line() && ei.Column() < ej.Column()) + }) + for i, err := range e.errors { + // This can happen during the append of two errors objects + if i >= e.maxErrorsToReport { + break + } + result[i] = err.ToDisplayString(e.source) + } + if e.numErrors > e.maxErrorsToReport { + result[e.maxErrorsToReport] = fmt.Sprintf("%d more errors were truncated", e.numErrors-e.maxErrorsToReport) + } + return strings.Join(result, "\n") +} diff --git a/vendor/github.com/google/cel-go/common/functions/BUILD.bazel b/vendor/github.com/google/cel-go/common/functions/BUILD.bazel new file mode 100644 index 0000000000..3cc27d60ce --- /dev/null +++ b/vendor/github.com/google/cel-go/common/functions/BUILD.bazel @@ -0,0 +1,17 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "functions.go", + ], + importpath = "github.com/google/cel-go/common/functions", + deps = [ + "//common/types/ref:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/functions/functions.go b/vendor/github.com/google/cel-go/common/functions/functions.go new file mode 100644 index 0000000000..67f4a5944e --- /dev/null +++ b/vendor/github.com/google/cel-go/common/functions/functions.go @@ -0,0 +1,61 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package functions defines the standard builtin functions supported by the interpreter +package functions + +import "github.com/google/cel-go/common/types/ref" + +// Overload defines a named overload of a function, indicating an operand trait +// which must be present on the first argument to the overload as well as one +// of either a unary, binary, or function implementation. +// +// The majority of operators within the expression language are unary or binary +// and the specializations simplify the call contract for implementers of +// types with operator overloads. Any added complexity is assumed to be handled +// by the generic FunctionOp. +type Overload struct { + // Operator name as written in an expression or defined within + // operators.go. + Operator string + + // Operand trait used to dispatch the call. The zero-value indicates a + // global function overload or that one of the Unary / Binary / Function + // definitions should be used to execute the call. + OperandTrait int + + // Unary defines the overload with a UnaryOp implementation. May be nil. + Unary UnaryOp + + // Binary defines the overload with a BinaryOp implementation. May be nil. + Binary BinaryOp + + // Function defines the overload with a FunctionOp implementation. May be + // nil. + Function FunctionOp + + // NonStrict specifies whether the Overload will tolerate arguments that + // are types.Err or types.Unknown. + NonStrict bool +} + +// UnaryOp is a function that takes a single value and produces an output. +type UnaryOp func(value ref.Val) ref.Val + +// BinaryOp is a function that takes two values and produces an output. +type BinaryOp func(lhs ref.Val, rhs ref.Val) ref.Val + +// FunctionOp is a function with accepts zero or more arguments and produces +// a value or error as a result. +type FunctionOp func(values ...ref.Val) ref.Val diff --git a/vendor/github.com/google/cel-go/common/location.go b/vendor/github.com/google/cel-go/common/location.go new file mode 100644 index 0000000000..ec3fa7cb50 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/location.go @@ -0,0 +1,51 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package common + +// Location interface to represent a location within Source. +type Location interface { + Line() int // 1-based line number within source. + Column() int // 0-based column number within source. +} + +// SourceLocation helper type to manually construct a location. +type SourceLocation struct { + line int + column int +} + +var ( + // Location implements the SourceLocation interface. + _ Location = &SourceLocation{} + // NoLocation is a particular illegal location. + NoLocation = &SourceLocation{-1, -1} +) + +// NewLocation creates a new location. +func NewLocation(line, column int) Location { + return &SourceLocation{ + line: line, + column: column} +} + +// Line returns the 1-based line of the location. +func (l *SourceLocation) Line() int { + return l.line +} + +// Column returns the 0-based column number of the location. +func (l *SourceLocation) Column() int { + return l.column +} diff --git a/vendor/github.com/google/cel-go/common/operators/BUILD.bazel b/vendor/github.com/google/cel-go/common/operators/BUILD.bazel new file mode 100644 index 0000000000..b5b67f0623 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/operators/BUILD.bazel @@ -0,0 +1,14 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "operators.go", + ], + importpath = "github.com/google/cel-go/common/operators", +) diff --git a/vendor/github.com/google/cel-go/common/operators/operators.go b/vendor/github.com/google/cel-go/common/operators/operators.go new file mode 100644 index 0000000000..f9b39bda3f --- /dev/null +++ b/vendor/github.com/google/cel-go/common/operators/operators.go @@ -0,0 +1,157 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package operators defines the internal function names of operators. +// +// All operators in the expression language are modelled as function calls. +package operators + +// String "names" for CEL operators. +const ( + // Symbolic operators. + Conditional = "_?_:_" + LogicalAnd = "_&&_" + LogicalOr = "_||_" + LogicalNot = "!_" + Equals = "_==_" + NotEquals = "_!=_" + Less = "_<_" + LessEquals = "_<=_" + Greater = "_>_" + GreaterEquals = "_>=_" + Add = "_+_" + Subtract = "_-_" + Multiply = "_*_" + Divide = "_/_" + Modulo = "_%_" + Negate = "-_" + Index = "_[_]" + OptIndex = "_[?_]" + OptSelect = "_?._" + + // Macros, must have a valid identifier. + Has = "has" + All = "all" + Exists = "exists" + ExistsOne = "exists_one" + Map = "map" + Filter = "filter" + + // Named operators, must not have be valid identifiers. + NotStrictlyFalse = "@not_strictly_false" + In = "@in" + + // Deprecated: named operators with valid identifiers. + OldNotStrictlyFalse = "__not_strictly_false__" + OldIn = "_in_" +) + +var ( + operators = map[string]string{ + "+": Add, + "/": Divide, + "==": Equals, + ">": Greater, + ">=": GreaterEquals, + "in": In, + "<": Less, + "<=": LessEquals, + "%": Modulo, + "*": Multiply, + "!=": NotEquals, + "-": Subtract, + } + // operatorMap of the operator symbol which refers to a struct containing the display name, + // if applicable, the operator precedence, and the arity. + // + // If the symbol does not have a display name listed in the map, it is only because it requires + // special casing to render properly as text. + operatorMap = map[string]struct { + displayName string + precedence int + arity int + }{ + Conditional: {displayName: "", precedence: 8, arity: 3}, + LogicalOr: {displayName: "||", precedence: 7, arity: 2}, + LogicalAnd: {displayName: "&&", precedence: 6, arity: 2}, + Equals: {displayName: "==", precedence: 5, arity: 2}, + Greater: {displayName: ">", precedence: 5, arity: 2}, + GreaterEquals: {displayName: ">=", precedence: 5, arity: 2}, + In: {displayName: "in", precedence: 5, arity: 2}, + Less: {displayName: "<", precedence: 5, arity: 2}, + LessEquals: {displayName: "<=", precedence: 5, arity: 2}, + NotEquals: {displayName: "!=", precedence: 5, arity: 2}, + OldIn: {displayName: "in", precedence: 5, arity: 2}, + Add: {displayName: "+", precedence: 4, arity: 2}, + Subtract: {displayName: "-", precedence: 4, arity: 2}, + Divide: {displayName: "/", precedence: 3, arity: 2}, + Modulo: {displayName: "%", precedence: 3, arity: 2}, + Multiply: {displayName: "*", precedence: 3, arity: 2}, + LogicalNot: {displayName: "!", precedence: 2, arity: 1}, + Negate: {displayName: "-", precedence: 2, arity: 1}, + Index: {displayName: "", precedence: 1, arity: 2}, + OptIndex: {displayName: "", precedence: 1, arity: 2}, + OptSelect: {displayName: "", precedence: 1, arity: 2}, + } +) + +// Find the internal function name for an operator, if the input text is one. +func Find(text string) (string, bool) { + op, found := operators[text] + return op, found +} + +// FindReverse returns the unmangled, text representation of the operator. +func FindReverse(symbol string) (string, bool) { + op, found := operatorMap[symbol] + if !found { + return "", false + } + return op.displayName, true +} + +// FindReverseBinaryOperator returns the unmangled, text representation of a binary operator. +// +// If the symbol does refer to an operator, but the operator does not have a display name the +// result is false. +func FindReverseBinaryOperator(symbol string) (string, bool) { + op, found := operatorMap[symbol] + if !found || op.arity != 2 { + return "", false + } + if op.displayName == "" { + return "", false + } + return op.displayName, true +} + +// Precedence returns the operator precedence, where the higher the number indicates +// higher precedence operations. +func Precedence(symbol string) int { + op, found := operatorMap[symbol] + if !found { + return 0 + } + return op.precedence +} + +// Arity returns the number of argument the operator takes +// -1 is returned if an undefined symbol is provided +func Arity(symbol string) int { + op, found := operatorMap[symbol] + if !found { + return -1 + } + return op.arity +} diff --git a/vendor/github.com/google/cel-go/common/overloads/BUILD.bazel b/vendor/github.com/google/cel-go/common/overloads/BUILD.bazel new file mode 100644 index 0000000000..e46e2f4830 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/overloads/BUILD.bazel @@ -0,0 +1,14 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "overloads.go", + ], + importpath = "github.com/google/cel-go/common/overloads", +) diff --git a/vendor/github.com/google/cel-go/common/overloads/overloads.go b/vendor/github.com/google/cel-go/common/overloads/overloads.go new file mode 100644 index 0000000000..9d50f4367b --- /dev/null +++ b/vendor/github.com/google/cel-go/common/overloads/overloads.go @@ -0,0 +1,327 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package overloads defines the internal overload identifiers for function and +// operator overloads. +package overloads + +// Boolean logic overloads +const ( + Conditional = "conditional" + LogicalAnd = "logical_and" + LogicalOr = "logical_or" + LogicalNot = "logical_not" + NotStrictlyFalse = "not_strictly_false" + Equals = "equals" + NotEquals = "not_equals" + LessBool = "less_bool" + LessInt64 = "less_int64" + LessInt64Double = "less_int64_double" + LessInt64Uint64 = "less_int64_uint64" + LessUint64 = "less_uint64" + LessUint64Double = "less_uint64_double" + LessUint64Int64 = "less_uint64_int64" + LessDouble = "less_double" + LessDoubleInt64 = "less_double_int64" + LessDoubleUint64 = "less_double_uint64" + LessString = "less_string" + LessBytes = "less_bytes" + LessTimestamp = "less_timestamp" + LessDuration = "less_duration" + LessEqualsBool = "less_equals_bool" + LessEqualsInt64 = "less_equals_int64" + LessEqualsInt64Double = "less_equals_int64_double" + LessEqualsInt64Uint64 = "less_equals_int64_uint64" + LessEqualsUint64 = "less_equals_uint64" + LessEqualsUint64Double = "less_equals_uint64_double" + LessEqualsUint64Int64 = "less_equals_uint64_int64" + LessEqualsDouble = "less_equals_double" + LessEqualsDoubleInt64 = "less_equals_double_int64" + LessEqualsDoubleUint64 = "less_equals_double_uint64" + LessEqualsString = "less_equals_string" + LessEqualsBytes = "less_equals_bytes" + LessEqualsTimestamp = "less_equals_timestamp" + LessEqualsDuration = "less_equals_duration" + GreaterBool = "greater_bool" + GreaterInt64 = "greater_int64" + GreaterInt64Double = "greater_int64_double" + GreaterInt64Uint64 = "greater_int64_uint64" + GreaterUint64 = "greater_uint64" + GreaterUint64Double = "greater_uint64_double" + GreaterUint64Int64 = "greater_uint64_int64" + GreaterDouble = "greater_double" + GreaterDoubleInt64 = "greater_double_int64" + GreaterDoubleUint64 = "greater_double_uint64" + GreaterString = "greater_string" + GreaterBytes = "greater_bytes" + GreaterTimestamp = "greater_timestamp" + GreaterDuration = "greater_duration" + GreaterEqualsBool = "greater_equals_bool" + GreaterEqualsInt64 = "greater_equals_int64" + GreaterEqualsInt64Double = "greater_equals_int64_double" + GreaterEqualsInt64Uint64 = "greater_equals_int64_uint64" + GreaterEqualsUint64 = "greater_equals_uint64" + GreaterEqualsUint64Double = "greater_equals_uint64_double" + GreaterEqualsUint64Int64 = "greater_equals_uint64_int64" + GreaterEqualsDouble = "greater_equals_double" + GreaterEqualsDoubleInt64 = "greater_equals_double_int64" + GreaterEqualsDoubleUint64 = "greater_equals_double_uint64" + GreaterEqualsString = "greater_equals_string" + GreaterEqualsBytes = "greater_equals_bytes" + GreaterEqualsTimestamp = "greater_equals_timestamp" + GreaterEqualsDuration = "greater_equals_duration" +) + +// Math overloads +const ( + AddInt64 = "add_int64" + AddUint64 = "add_uint64" + AddDouble = "add_double" + AddString = "add_string" + AddBytes = "add_bytes" + AddList = "add_list" + AddTimestampDuration = "add_timestamp_duration" + AddDurationTimestamp = "add_duration_timestamp" + AddDurationDuration = "add_duration_duration" + SubtractInt64 = "subtract_int64" + SubtractUint64 = "subtract_uint64" + SubtractDouble = "subtract_double" + SubtractTimestampTimestamp = "subtract_timestamp_timestamp" + SubtractTimestampDuration = "subtract_timestamp_duration" + SubtractDurationDuration = "subtract_duration_duration" + MultiplyInt64 = "multiply_int64" + MultiplyUint64 = "multiply_uint64" + MultiplyDouble = "multiply_double" + DivideInt64 = "divide_int64" + DivideUint64 = "divide_uint64" + DivideDouble = "divide_double" + ModuloInt64 = "modulo_int64" + ModuloUint64 = "modulo_uint64" + NegateInt64 = "negate_int64" + NegateDouble = "negate_double" +) + +// Index overloads +const ( + IndexList = "index_list" + IndexMap = "index_map" + IndexMessage = "index_message" // TODO: introduce concept of types.Message +) + +// In operators +const ( + DeprecatedIn = "in" + InList = "in_list" + InMap = "in_map" + InMessage = "in_message" // TODO: introduce concept of types.Message +) + +// Size overloads +const ( + Size = "size" + SizeString = "size_string" + SizeBytes = "size_bytes" + SizeList = "size_list" + SizeMap = "size_map" + SizeStringInst = "string_size" + SizeBytesInst = "bytes_size" + SizeListInst = "list_size" + SizeMapInst = "map_size" +) + +// String function names. +const ( + Contains = "contains" + EndsWith = "endsWith" + Matches = "matches" + StartsWith = "startsWith" +) + +// Extension function overloads with complex behaviors that need to be referenced in runtime and static analysis cost computations. +const ( + ExtQuoteString = "strings_quote" +) + +// String function overload names. +const ( + ContainsString = "contains_string" + EndsWithString = "ends_with_string" + MatchesString = "matches_string" + StartsWithString = "starts_with_string" +) + +// Extension function overloads with complex behaviors that need to be referenced in runtime and static analysis cost computations. +const ( + ExtFormatString = "string_format" +) + +// Time-based functions. +const ( + TimeGetFullYear = "getFullYear" + TimeGetMonth = "getMonth" + TimeGetDayOfYear = "getDayOfYear" + TimeGetDate = "getDate" + TimeGetDayOfMonth = "getDayOfMonth" + TimeGetDayOfWeek = "getDayOfWeek" + TimeGetHours = "getHours" + TimeGetMinutes = "getMinutes" + TimeGetSeconds = "getSeconds" + TimeGetMilliseconds = "getMilliseconds" +) + +// Timestamp overloads for time functions without timezones. +const ( + TimestampToYear = "timestamp_to_year" + TimestampToMonth = "timestamp_to_month" + TimestampToDayOfYear = "timestamp_to_day_of_year" + TimestampToDayOfMonthZeroBased = "timestamp_to_day_of_month" + TimestampToDayOfMonthOneBased = "timestamp_to_day_of_month_1_based" + TimestampToDayOfWeek = "timestamp_to_day_of_week" + TimestampToHours = "timestamp_to_hours" + TimestampToMinutes = "timestamp_to_minutes" + TimestampToSeconds = "timestamp_to_seconds" + TimestampToMilliseconds = "timestamp_to_milliseconds" +) + +// Timestamp overloads for time functions with timezones. +const ( + TimestampToYearWithTz = "timestamp_to_year_with_tz" + TimestampToMonthWithTz = "timestamp_to_month_with_tz" + TimestampToDayOfYearWithTz = "timestamp_to_day_of_year_with_tz" + TimestampToDayOfMonthZeroBasedWithTz = "timestamp_to_day_of_month_with_tz" + TimestampToDayOfMonthOneBasedWithTz = "timestamp_to_day_of_month_1_based_with_tz" + TimestampToDayOfWeekWithTz = "timestamp_to_day_of_week_with_tz" + TimestampToHoursWithTz = "timestamp_to_hours_with_tz" + TimestampToMinutesWithTz = "timestamp_to_minutes_with_tz" + TimestampToSecondsWithTz = "timestamp_to_seconds_tz" + TimestampToMillisecondsWithTz = "timestamp_to_milliseconds_with_tz" +) + +// Duration overloads for time functions. +const ( + DurationToHours = "duration_to_hours" + DurationToMinutes = "duration_to_minutes" + DurationToSeconds = "duration_to_seconds" + DurationToMilliseconds = "duration_to_milliseconds" +) + +// Type conversion methods and overloads +const ( + TypeConvertInt = "int" + TypeConvertUint = "uint" + TypeConvertDouble = "double" + TypeConvertBool = "bool" + TypeConvertString = "string" + TypeConvertBytes = "bytes" + TypeConvertTimestamp = "timestamp" + TypeConvertDuration = "duration" + TypeConvertType = "type" + TypeConvertDyn = "dyn" +) + +// Int conversion functions. +const ( + IntToInt = "int64_to_int64" + UintToInt = "uint64_to_int64" + DoubleToInt = "double_to_int64" + StringToInt = "string_to_int64" + TimestampToInt = "timestamp_to_int64" + DurationToInt = "duration_to_int64" +) + +// Uint conversion functions. +const ( + UintToUint = "uint64_to_uint64" + IntToUint = "int64_to_uint64" + DoubleToUint = "double_to_uint64" + StringToUint = "string_to_uint64" +) + +// Double conversion functions. +const ( + DoubleToDouble = "double_to_double" + IntToDouble = "int64_to_double" + UintToDouble = "uint64_to_double" + StringToDouble = "string_to_double" +) + +// Bool conversion functions. +const ( + BoolToBool = "bool_to_bool" + StringToBool = "string_to_bool" +) + +// Bytes conversion functions. +const ( + BytesToBytes = "bytes_to_bytes" + StringToBytes = "string_to_bytes" +) + +// String conversion functions. +const ( + StringToString = "string_to_string" + BoolToString = "bool_to_string" + IntToString = "int64_to_string" + UintToString = "uint64_to_string" + DoubleToString = "double_to_string" + BytesToString = "bytes_to_string" + TimestampToString = "timestamp_to_string" + DurationToString = "duration_to_string" +) + +// Timestamp conversion functions +const ( + TimestampToTimestamp = "timestamp_to_timestamp" + StringToTimestamp = "string_to_timestamp" + IntToTimestamp = "int64_to_timestamp" +) + +// Convert duration from string +const ( + DurationToDuration = "duration_to_duration" + StringToDuration = "string_to_duration" + IntToDuration = "int64_to_duration" +) + +// Convert to dyn +const ( + ToDyn = "to_dyn" +) + +// Comprehensions helper methods, not directly accessible via a developer. +const ( + Iterator = "@iterator" + HasNext = "@hasNext" + Next = "@next" +) + +// IsTypeConversionFunction returns whether the input function is a standard library type +// conversion function. +func IsTypeConversionFunction(function string) bool { + switch function { + case TypeConvertBool, + TypeConvertBytes, + TypeConvertDouble, + TypeConvertDuration, + TypeConvertDyn, + TypeConvertInt, + TypeConvertString, + TypeConvertTimestamp, + TypeConvertType, + TypeConvertUint: + return true + default: + return false + } +} diff --git a/vendor/github.com/google/cel-go/common/runes/BUILD.bazel b/vendor/github.com/google/cel-go/common/runes/BUILD.bazel new file mode 100644 index 0000000000..bb30242cfa --- /dev/null +++ b/vendor/github.com/google/cel-go/common/runes/BUILD.bazel @@ -0,0 +1,25 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "buffer.go", + ], + importpath = "github.com/google/cel-go/common/runes", +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "buffer_test.go", + ], + embed = [ + ":go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/runes/buffer.go b/vendor/github.com/google/cel-go/common/runes/buffer.go new file mode 100644 index 0000000000..021198224d --- /dev/null +++ b/vendor/github.com/google/cel-go/common/runes/buffer.go @@ -0,0 +1,242 @@ +// Copyright 2021 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package runes provides interfaces and utilities for working with runes. +package runes + +import ( + "strings" + "unicode/utf8" +) + +// Buffer is an interface for accessing a contiguous array of code points. +type Buffer interface { + Get(i int) rune + Slice(i, j int) string + Len() int +} + +type emptyBuffer struct{} + +func (e *emptyBuffer) Get(i int) rune { + panic("slice index out of bounds") +} + +func (e *emptyBuffer) Slice(i, j int) string { + if i != 0 || i != j { + panic("slice index out of bounds") + } + return "" +} + +func (e *emptyBuffer) Len() int { + return 0 +} + +var _ Buffer = &emptyBuffer{} + +// asciiBuffer is an implementation for an array of code points that contain code points only from +// the ASCII character set. +type asciiBuffer struct { + arr []byte +} + +func (a *asciiBuffer) Get(i int) rune { + return rune(uint32(a.arr[i])) +} + +func (a *asciiBuffer) Slice(i, j int) string { + return string(a.arr[i:j]) +} + +func (a *asciiBuffer) Len() int { + return len(a.arr) +} + +var _ Buffer = &asciiBuffer{} + +// basicBuffer is an implementation for an array of code points that contain code points from both +// the Latin-1 character set and Basic Multilingual Plane. +type basicBuffer struct { + arr []uint16 +} + +func (b *basicBuffer) Get(i int) rune { + return rune(uint32(b.arr[i])) +} + +func (b *basicBuffer) Slice(i, j int) string { + var str strings.Builder + str.Grow((j - i) * 3) // Worst case encoding size for 0xffff is 3. + for ; i < j; i++ { + str.WriteRune(rune(uint32(b.arr[i]))) + } + return str.String() +} + +func (b *basicBuffer) Len() int { + return len(b.arr) +} + +var _ Buffer = &basicBuffer{} + +// supplementalBuffer is an implementation for an array of code points that contain code points from +// the Latin-1 character set, Basic Multilingual Plane, or the Supplemental Multilingual Plane. +type supplementalBuffer struct { + arr []rune +} + +func (s *supplementalBuffer) Get(i int) rune { + return rune(uint32(s.arr[i])) +} + +func (s *supplementalBuffer) Slice(i, j int) string { + return string(s.arr[i:j]) +} + +func (s *supplementalBuffer) Len() int { + return len(s.arr) +} + +var _ Buffer = &supplementalBuffer{} + +var nilBuffer = &emptyBuffer{} + +// NewBuffer returns an efficient implementation of Buffer for the given text based on the ranges of +// the encoded code points contained within. +// +// Code points are represented as an array of byte, uint16, or rune. This approach ensures that +// each index represents a code point by itself without needing to use an array of rune. At first +// we assume all code points are less than or equal to '\u007f'. If this holds true, the +// underlying storage is a byte array containing only ASCII characters. If we encountered a code +// point above this range but less than or equal to '\uffff' we allocate a uint16 array, copy the +// elements of previous byte array to the uint16 array, and continue. If this holds true, the +// underlying storage is a uint16 array containing only Unicode characters in the Basic Multilingual +// Plane. If we encounter a code point above '\uffff' we allocate an rune array, copy the previous +// elements of the byte or uint16 array, and continue. The underlying storage is an rune array +// containing any Unicode character. +func NewBuffer(data string) Buffer { + buf, _ := newBuffer(data, false) + return buf +} + +// NewBufferAndLineOffsets returns an efficient implementation of Buffer for the given text based on +// the ranges of the encoded code points contained within, as well as returning the line offsets. +// +// Code points are represented as an array of byte, uint16, or rune. This approach ensures that +// each index represents a code point by itself without needing to use an array of rune. At first +// we assume all code points are less than or equal to '\u007f'. If this holds true, the +// underlying storage is a byte array containing only ASCII characters. If we encountered a code +// point above this range but less than or equal to '\uffff' we allocate a uint16 array, copy the +// elements of previous byte array to the uint16 array, and continue. If this holds true, the +// underlying storage is a uint16 array containing only Unicode characters in the Basic Multilingual +// Plane. If we encounter a code point above '\uffff' we allocate an rune array, copy the previous +// elements of the byte or uint16 array, and continue. The underlying storage is an rune array +// containing any Unicode character. +func NewBufferAndLineOffsets(data string) (Buffer, []int32) { + return newBuffer(data, true) +} + +func newBuffer(data string, lines bool) (Buffer, []int32) { + if len(data) == 0 { + return nilBuffer, []int32{0} + } + var ( + idx = 0 + off int32 = 0 + buf8 = make([]byte, 0, len(data)) + buf16 []uint16 + buf32 []rune + offs []int32 + ) + for idx < len(data) { + r, s := utf8.DecodeRuneInString(data[idx:]) + idx += s + if lines && r == '\n' { + offs = append(offs, off+1) + } + if r < utf8.RuneSelf { + buf8 = append(buf8, byte(r)) + off++ + continue + } + if r <= 0xffff { + buf16 = make([]uint16, len(buf8), len(data)) + for i, v := range buf8 { + buf16[i] = uint16(v) + } + buf8 = nil + buf16 = append(buf16, uint16(r)) + off++ + goto copy16 + } + buf32 = make([]rune, len(buf8), len(data)) + for i, v := range buf8 { + buf32[i] = rune(uint32(v)) + } + buf8 = nil + buf32 = append(buf32, r) + off++ + goto copy32 + } + if lines { + offs = append(offs, off+1) + } + return &asciiBuffer{ + arr: buf8, + }, offs +copy16: + for idx < len(data) { + r, s := utf8.DecodeRuneInString(data[idx:]) + idx += s + if lines && r == '\n' { + offs = append(offs, off+1) + } + if r <= 0xffff { + buf16 = append(buf16, uint16(r)) + off++ + continue + } + buf32 = make([]rune, len(buf16), len(data)) + for i, v := range buf16 { + buf32[i] = rune(uint32(v)) + } + buf16 = nil + buf32 = append(buf32, r) + off++ + goto copy32 + } + if lines { + offs = append(offs, off+1) + } + return &basicBuffer{ + arr: buf16, + }, offs +copy32: + for idx < len(data) { + r, s := utf8.DecodeRuneInString(data[idx:]) + idx += s + if lines && r == '\n' { + offs = append(offs, off+1) + } + buf32 = append(buf32, r) + off++ + } + if lines { + offs = append(offs, off+1) + } + return &supplementalBuffer{ + arr: buf32, + }, offs +} diff --git a/vendor/github.com/google/cel-go/common/source.go b/vendor/github.com/google/cel-go/common/source.go new file mode 100644 index 0000000000..ec79cb5454 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/source.go @@ -0,0 +1,173 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package common + +import ( + "github.com/google/cel-go/common/runes" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +// Source interface for filter source contents. +type Source interface { + // Content returns the source content represented as a string. + // Examples contents are the single file contents, textbox field, + // or url parameter. + Content() string + + // Description gives a brief description of the source. + // Example descriptions are a file name or ui element. + Description() string + + // LineOffsets gives the character offsets at which lines occur. + // The zero-th entry should refer to the break between the first + // and second line, or EOF if there is only one line of source. + LineOffsets() []int32 + + // LocationOffset translates a Location to an offset. + // Given the line and column of the Location returns the + // Location's character offset in the Source, and a bool + // indicating whether the Location was found. + LocationOffset(location Location) (int32, bool) + + // OffsetLocation translates a character offset to a Location, or + // false if the conversion was not feasible. + OffsetLocation(offset int32) (Location, bool) + + // NewLocation takes an input line and column and produces a Location. + // The default behavior is to treat the line and column as absolute, + // but concrete derivations may use this method to convert a relative + // line and column position into an absolute location. + NewLocation(line, col int) Location + + // Snippet returns a line of content and whether the line was found. + Snippet(line int) (string, bool) +} + +// The sourceImpl type implementation of the Source interface. +type sourceImpl struct { + runes.Buffer + description string + lineOffsets []int32 +} + +var _ runes.Buffer = &sourceImpl{} + +// TODO(jimlarson) "Character offsets" should index the code points +// within the UTF-8 encoded string. It currently indexes bytes. +// Can be accomplished by using rune[] instead of string for contents. + +// NewTextSource creates a new Source from the input text string. +func NewTextSource(text string) Source { + return NewStringSource(text, "") +} + +// NewStringSource creates a new Source from the given contents and description. +func NewStringSource(contents string, description string) Source { + // Compute line offsets up front as they are referred to frequently. + buf, offs := runes.NewBufferAndLineOffsets(contents) + return &sourceImpl{ + Buffer: buf, + description: description, + lineOffsets: offs, + } +} + +// NewInfoSource creates a new Source from a SourceInfo. +func NewInfoSource(info *exprpb.SourceInfo) Source { + return &sourceImpl{ + Buffer: runes.NewBuffer(""), + description: info.GetLocation(), + lineOffsets: info.GetLineOffsets(), + } +} + +// Content implements the Source interface method. +func (s *sourceImpl) Content() string { + return s.Slice(0, s.Len()) +} + +// Description implements the Source interface method. +func (s *sourceImpl) Description() string { + return s.description +} + +// LineOffsets implements the Source interface method. +func (s *sourceImpl) LineOffsets() []int32 { + return s.lineOffsets +} + +// LocationOffset implements the Source interface method. +func (s *sourceImpl) LocationOffset(location Location) (int32, bool) { + if lineOffset, found := s.findLineOffset(location.Line()); found { + return lineOffset + int32(location.Column()), true + } + return -1, false +} + +// NewLocation implements the Source interface method. +func (s *sourceImpl) NewLocation(line, col int) Location { + return NewLocation(line, col) +} + +// OffsetLocation implements the Source interface method. +func (s *sourceImpl) OffsetLocation(offset int32) (Location, bool) { + line, lineOffset := s.findLine(offset) + return NewLocation(int(line), int(offset-lineOffset)), true +} + +// Snippet implements the Source interface method. +func (s *sourceImpl) Snippet(line int) (string, bool) { + charStart, found := s.findLineOffset(line) + if !found || s.Len() == 0 { + return "", false + } + charEnd, found := s.findLineOffset(line + 1) + if found { + return s.Slice(int(charStart), int(charEnd-1)), true + } + return s.Slice(int(charStart), s.Len()), true +} + +// findLineOffset returns the offset where the (1-indexed) line begins, +// or false if line doesn't exist. +func (s *sourceImpl) findLineOffset(line int) (int32, bool) { + if line == 1 { + return 0, true + } + if line > 1 && line <= int(len(s.lineOffsets)) { + offset := s.lineOffsets[line-2] + return offset, true + } + return -1, false +} + +// findLine finds the line that contains the given character offset and +// returns the line number and offset of the beginning of that line. +// Note that the last line is treated as if it contains all offsets +// beyond the end of the actual source. +func (s *sourceImpl) findLine(characterOffset int32) (int32, int32) { + var line int32 = 1 + for _, lineOffset := range s.lineOffsets { + if lineOffset > characterOffset { + break + } + line++ + } + if line == 1 { + return line, 0 + } + return line, s.lineOffsets[line-2] +} diff --git a/vendor/github.com/google/cel-go/common/stdlib/BUILD.bazel b/vendor/github.com/google/cel-go/common/stdlib/BUILD.bazel new file mode 100644 index 0000000000..124dbea819 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/stdlib/BUILD.bazel @@ -0,0 +1,24 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "standard.go", + ], + importpath = "github.com/google/cel-go/common/stdlib", + deps = [ + "//common:go_default_library", + "//common/decls:go_default_library", + "//common/functions:go_default_library", + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + ], +) \ No newline at end of file diff --git a/vendor/github.com/google/cel-go/common/stdlib/standard.go b/vendor/github.com/google/cel-go/common/stdlib/standard.go new file mode 100644 index 0000000000..4040a4f5c5 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/stdlib/standard.go @@ -0,0 +1,1058 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package stdlib contains all of the standard library function declarations and definitions for CEL. +package stdlib + +import ( + "strconv" + "strings" + "time" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/decls" + "github.com/google/cel-go/common/functions" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +var ( + stdFunctions []*decls.FunctionDecl + stdTypes []*decls.VariableDecl + utcTZ = types.String("UTC") +) + +func init() { + paramA := types.NewTypeParamType("A") + paramB := types.NewTypeParamType("B") + listOfA := types.NewListType(paramA) + mapOfAB := types.NewMapType(paramA, paramB) + + stdTypes = []*decls.VariableDecl{ + decls.TypeVariable(types.BoolType), + decls.TypeVariable(types.BytesType), + decls.TypeVariable(types.DoubleType), + decls.TypeVariable(types.DurationType), + decls.TypeVariable(types.IntType), + decls.TypeVariable(listOfA), + decls.TypeVariable(mapOfAB), + decls.TypeVariable(types.NullType), + decls.TypeVariable(types.StringType), + decls.TypeVariable(types.TimestampType), + decls.TypeVariable(types.TypeType), + decls.TypeVariable(types.UintType), + } + + stdFunctions = []*decls.FunctionDecl{ + // Logical operators. Special-cased within the interpreter. + // Note, the singleton binding prevents extensions from overriding the operator behavior. + function(operators.Conditional, + decls.FunctionDocs( + `The ternary operator tests a boolean predicate and returns the left-hand side `+ + `(truthy) expression if true, or the right-hand side (falsy) expression if false`), + decls.Overload(overloads.Conditional, argTypes(types.BoolType, paramA, paramA), paramA, + decls.OverloadIsNonStrict(), + decls.OverloadExamples( + `'hello'.contains('lo') ? 'hi' : 'bye' // 'hi'`, + `32 % 3 == 0 ? 'divisible' : 'not divisible' // 'not divisible'`)), + decls.SingletonFunctionBinding(noFunctionOverrides)), + + function(operators.LogicalAnd, + decls.FunctionDocs( + `logically AND two boolean values. Errors and unknown values`, + `are valid inputs and will not halt evaluation.`), + decls.Overload(overloads.LogicalAnd, argTypes(types.BoolType, types.BoolType), types.BoolType, + decls.OverloadIsNonStrict(), + decls.OverloadExamples( + `true && true // true`, + `true && false // false`, + `error && true // error`, + `error && false // false`)), + decls.SingletonBinaryBinding(noBinaryOverrides)), + + function(operators.LogicalOr, + decls.FunctionDocs( + `logically OR two boolean values. Errors and unknown values`, + `are valid inputs and will not halt evaluation.`), + decls.Overload(overloads.LogicalOr, argTypes(types.BoolType, types.BoolType), types.BoolType, + decls.OverloadIsNonStrict(), + decls.OverloadExamples( + `true || false // true`, + `false || false // false`, + `error || true // true`, + `error || error // true`)), + decls.SingletonBinaryBinding(noBinaryOverrides)), + + function(operators.LogicalNot, + decls.FunctionDocs(`logically negate a boolean value.`), + decls.Overload(overloads.LogicalNot, argTypes(types.BoolType), types.BoolType, + decls.OverloadExamples( + `!true // false`, + `!false // true`, + `!error // error`)), + decls.SingletonUnaryBinding(func(val ref.Val) ref.Val { + b, ok := val.(types.Bool) + if !ok { + return types.MaybeNoSuchOverloadErr(val) + } + return b.Negate() + })), + + // Comprehension short-circuiting related function + function(operators.NotStrictlyFalse, + decls.Overload(overloads.NotStrictlyFalse, argTypes(types.BoolType), types.BoolType, + decls.OverloadIsNonStrict(), + decls.UnaryBinding(notStrictlyFalse))), + // Deprecated: __not_strictly_false__ + function(operators.OldNotStrictlyFalse, + decls.DisableDeclaration(true), // safe deprecation + decls.Overload(operators.OldNotStrictlyFalse, argTypes(types.BoolType), types.BoolType, + decls.OverloadIsNonStrict(), + decls.UnaryBinding(notStrictlyFalse))), + + // Equality / inequality. Special-cased in the interpreter + function(operators.Equals, + decls.FunctionDocs(`compare two values of the same type for equality`), + decls.Overload(overloads.Equals, argTypes(paramA, paramA), types.BoolType, + decls.OverloadExamples( + `1 == 1 // true`, + `'hello' == 'world' // false`, + `bytes('hello') == b'hello' // true`, + `duration('1h') == duration('60m') // true`, + `dyn(3.0) == 3 // true`)), + decls.SingletonBinaryBinding(noBinaryOverrides)), + function(operators.NotEquals, + decls.FunctionDocs(`compare two values of the same type for inequality`), + decls.Overload(overloads.NotEquals, argTypes(paramA, paramA), types.BoolType, + decls.OverloadExamples( + `1 != 2 // true`, + `"a" != "a" // false`, + `3.0 != 3.1 // true`)), + decls.SingletonBinaryBinding(noBinaryOverrides)), + + // Mathematical operators + function(operators.Add, + decls.FunctionDocs( + `adds two numeric values or concatenates two strings, bytes,`, + `or lists.`), + decls.Overload(overloads.AddBytes, + argTypes(types.BytesType, types.BytesType), types.BytesType, + decls.OverloadExamples(`b'hi' + bytes('ya') // b'hiya'`)), + decls.Overload(overloads.AddDouble, + argTypes(types.DoubleType, types.DoubleType), types.DoubleType, + decls.OverloadExamples(`3.14 + 1.59 // 4.73`)), + decls.Overload(overloads.AddDurationDuration, + argTypes(types.DurationType, types.DurationType), types.DurationType, + decls.OverloadExamples(`duration('1m') + duration('1s') // duration('1m1s')`)), + decls.Overload(overloads.AddDurationTimestamp, + argTypes(types.DurationType, types.TimestampType), types.TimestampType, + decls.OverloadExamples(`duration('24h') + timestamp('2023-01-01T00:00:00Z') // timestamp('2023-01-02T00:00:00Z')`)), + decls.Overload(overloads.AddTimestampDuration, + argTypes(types.TimestampType, types.DurationType), types.TimestampType, + decls.OverloadExamples(`timestamp('2023-01-01T00:00:00Z') + duration('24h1m2s') // timestamp('2023-01-02T00:01:02Z')`)), + decls.Overload(overloads.AddInt64, + argTypes(types.IntType, types.IntType), types.IntType, + decls.OverloadExamples(`1 + 2 // 3`)), + decls.Overload(overloads.AddList, + argTypes(listOfA, listOfA), listOfA, + decls.OverloadExamples(`[1] + [2, 3] // [1, 2, 3]`)), + decls.Overload(overloads.AddString, + argTypes(types.StringType, types.StringType), types.StringType, + decls.OverloadExamples(`"Hello, " + "world!" // "Hello, world!"`)), + decls.Overload(overloads.AddUint64, + argTypes(types.UintType, types.UintType), types.UintType, + decls.OverloadExamples(`22u + 33u // 55u`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + return lhs.(traits.Adder).Add(rhs) + }, traits.AdderType)), + function(operators.Divide, + decls.FunctionDocs(`divide two numbers`), + decls.Overload(overloads.DivideDouble, + argTypes(types.DoubleType, types.DoubleType), types.DoubleType, + decls.OverloadExamples(`7.0 / 2.0 // 3.5`)), + decls.Overload(overloads.DivideInt64, + argTypes(types.IntType, types.IntType), types.IntType, + decls.OverloadExamples(`10 / 2 // 5`)), + decls.Overload(overloads.DivideUint64, + argTypes(types.UintType, types.UintType), types.UintType, + decls.OverloadExamples(`42u / 2u // 21u`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + return lhs.(traits.Divider).Divide(rhs) + }, traits.DividerType)), + function(operators.Modulo, + decls.FunctionDocs(`compute the modulus of one integer into another`), + decls.Overload(overloads.ModuloInt64, + argTypes(types.IntType, types.IntType), types.IntType, + decls.OverloadExamples(`3 % 2 // 1`)), + decls.Overload(overloads.ModuloUint64, + argTypes(types.UintType, types.UintType), types.UintType, + decls.OverloadExamples(`6u % 3u // 0u`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + return lhs.(traits.Modder).Modulo(rhs) + }, traits.ModderType)), + function(operators.Multiply, + decls.FunctionDocs(`multiply two numbers`), + decls.Overload(overloads.MultiplyDouble, + argTypes(types.DoubleType, types.DoubleType), types.DoubleType, + decls.OverloadExamples(`3.5 * 40.0 // 140.0`)), + decls.Overload(overloads.MultiplyInt64, + argTypes(types.IntType, types.IntType), types.IntType, + decls.OverloadExamples(`-2 * 6 // -12`)), + decls.Overload(overloads.MultiplyUint64, + argTypes(types.UintType, types.UintType), types.UintType, + decls.OverloadExamples(`13u * 3u // 39u`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + return lhs.(traits.Multiplier).Multiply(rhs) + }, traits.MultiplierType)), + function(operators.Negate, + decls.FunctionDocs(`negate a numeric value`), + decls.Overload(overloads.NegateDouble, argTypes(types.DoubleType), types.DoubleType, + decls.OverloadExamples(`-(3.14) // -3.14`)), + decls.Overload(overloads.NegateInt64, argTypes(types.IntType), types.IntType, + decls.OverloadExamples(`-(5) // -5`)), + decls.SingletonUnaryBinding(func(val ref.Val) ref.Val { + if types.IsBool(val) { + return types.MaybeNoSuchOverloadErr(val) + } + return val.(traits.Negater).Negate() + }, traits.NegatorType)), + function(operators.Subtract, + decls.FunctionDocs(`subtract two numbers, or two time-related values`), + decls.Overload(overloads.SubtractDouble, + argTypes(types.DoubleType, types.DoubleType), types.DoubleType, + decls.OverloadExamples(`10.5 - 2.0 // 8.5`)), + decls.Overload(overloads.SubtractDurationDuration, + argTypes(types.DurationType, types.DurationType), types.DurationType, + decls.OverloadExamples(`duration('1m') - duration('1s') // duration('59s')`)), + decls.Overload(overloads.SubtractInt64, + argTypes(types.IntType, types.IntType), types.IntType, + decls.OverloadExamples(`5 - 3 // 2`)), + decls.Overload(overloads.SubtractTimestampDuration, + argTypes(types.TimestampType, types.DurationType), types.TimestampType, + decls.OverloadExamples(common.MultilineDescription( + `timestamp('2023-01-10T12:00:00Z')`, + ` - duration('12h') // timestamp('2023-01-10T00:00:00Z')`))), + decls.Overload(overloads.SubtractTimestampTimestamp, + argTypes(types.TimestampType, types.TimestampType), types.DurationType, + decls.OverloadExamples(common.MultilineDescription( + `timestamp('2023-01-10T12:00:00Z')`, + ` - timestamp('2023-01-10T00:00:00Z') // duration('12h')`))), + decls.Overload(overloads.SubtractUint64, + argTypes(types.UintType, types.UintType), types.UintType, + decls.OverloadExamples(common.MultilineDescription( + `// the subtraction result must be positive, otherwise an overflow`, + `// error is generated.`, + `42u - 3u // 39u`))), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + return lhs.(traits.Subtractor).Subtract(rhs) + }, traits.SubtractorType)), + + // Relations operators + + function(operators.Less, + decls.FunctionDocs( + `compare two values and return true if the first value is`, + `less than the second`), + decls.Overload(overloads.LessBool, + argTypes(types.BoolType, types.BoolType), types.BoolType, + decls.OverloadExamples(`false < true // true`)), + decls.Overload(overloads.LessInt64, + argTypes(types.IntType, types.IntType), types.BoolType, + decls.OverloadExamples(`-2 < 3 // true`, `1 < 0 // false`)), + decls.Overload(overloads.LessInt64Double, + argTypes(types.IntType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`1 < 1.1 // true`)), + decls.Overload(overloads.LessInt64Uint64, + argTypes(types.IntType, types.UintType), types.BoolType, + decls.OverloadExamples(`1 < 2u // true`)), + decls.Overload(overloads.LessUint64, + argTypes(types.UintType, types.UintType), types.BoolType, + decls.OverloadExamples(`1u < 2u // true`)), + decls.Overload(overloads.LessUint64Double, + argTypes(types.UintType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`1u < 0.9 // false`)), + decls.Overload(overloads.LessUint64Int64, + argTypes(types.UintType, types.IntType), types.BoolType, + decls.OverloadExamples(`1u < 23 // true`, `1u < -1 // false`)), + decls.Overload(overloads.LessDouble, + argTypes(types.DoubleType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2.0 < 2.4 // true`)), + decls.Overload(overloads.LessDoubleInt64, + argTypes(types.DoubleType, types.IntType), types.BoolType, + decls.OverloadExamples(`2.1 < 3 // true`)), + decls.Overload(overloads.LessDoubleUint64, + argTypes(types.DoubleType, types.UintType), types.BoolType, + decls.OverloadExamples(`2.3 < 2u // false`, `-1.0 < 1u // true`)), + decls.Overload(overloads.LessString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples(`'a' < 'b' // true`, `'cat' < 'cab' // false`)), + decls.Overload(overloads.LessBytes, + argTypes(types.BytesType, types.BytesType), types.BoolType, + decls.OverloadExamples(`b'hello' < b'world' // true`)), + decls.Overload(overloads.LessTimestamp, + argTypes(types.TimestampType, types.TimestampType), types.BoolType, + decls.OverloadExamples(`timestamp('2001-01-01T02:03:04Z') < timestamp('2002-02-02T02:03:04Z') // true`)), + decls.Overload(overloads.LessDuration, + argTypes(types.DurationType, types.DurationType), types.BoolType, + decls.OverloadExamples(`duration('1ms') < duration('1s') // true`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + cmp := lhs.(traits.Comparer).Compare(rhs) + if cmp == types.IntNegOne { + return types.True + } + if cmp == types.IntOne || cmp == types.IntZero { + return types.False + } + return cmp + }, traits.ComparerType)), + + function(operators.LessEquals, + decls.FunctionDocs( + `compare two values and return true if the first value is`, + `less than or equal to the second`), + decls.Overload(overloads.LessEqualsBool, + argTypes(types.BoolType, types.BoolType), types.BoolType, + decls.OverloadExamples(`false <= true // true`)), + decls.Overload(overloads.LessEqualsInt64, + argTypes(types.IntType, types.IntType), types.BoolType, + decls.OverloadExamples(`-2 <= 3 // true`)), + decls.Overload(overloads.LessEqualsInt64Double, + argTypes(types.IntType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`1 <= 1.1 // true`)), + decls.Overload(overloads.LessEqualsInt64Uint64, + argTypes(types.IntType, types.UintType), types.BoolType, + decls.OverloadExamples(`1 <= 2u // true`, `-1 <= 0u // true`)), + decls.Overload(overloads.LessEqualsUint64, + argTypes(types.UintType, types.UintType), types.BoolType, + decls.OverloadExamples(`1u <= 2u // true`)), + decls.Overload(overloads.LessEqualsUint64Double, + argTypes(types.UintType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`1u <= 1.0 // true`, `1u <= 1.1 // true`)), + decls.Overload(overloads.LessEqualsUint64Int64, + argTypes(types.UintType, types.IntType), types.BoolType, + decls.OverloadExamples(`1u <= 23 // true`)), + decls.Overload(overloads.LessEqualsDouble, + argTypes(types.DoubleType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2.0 <= 2.4 // true`)), + decls.Overload(overloads.LessEqualsDoubleInt64, + argTypes(types.DoubleType, types.IntType), types.BoolType, + decls.OverloadExamples(`2.1 <= 3 // true`)), + decls.Overload(overloads.LessEqualsDoubleUint64, + argTypes(types.DoubleType, types.UintType), types.BoolType, + decls.OverloadExamples(`2.0 <= 2u // true`, `-1.0 <= 1u // true`)), + decls.Overload(overloads.LessEqualsString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples(`'a' <= 'b' // true`, `'a' <= 'a' // true`, `'cat' <= 'cab' // false`)), + decls.Overload(overloads.LessEqualsBytes, + argTypes(types.BytesType, types.BytesType), types.BoolType, + decls.OverloadExamples(`b'hello' <= b'world' // true`)), + decls.Overload(overloads.LessEqualsTimestamp, + argTypes(types.TimestampType, types.TimestampType), types.BoolType, + decls.OverloadExamples(`timestamp('2001-01-01T02:03:04Z') <= timestamp('2002-02-02T02:03:04Z') // true`)), + decls.Overload(overloads.LessEqualsDuration, + argTypes(types.DurationType, types.DurationType), types.BoolType, + decls.OverloadExamples(`duration('1ms') <= duration('1s') // true`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + cmp := lhs.(traits.Comparer).Compare(rhs) + if cmp == types.IntNegOne || cmp == types.IntZero { + return types.True + } + if cmp == types.IntOne { + return types.False + } + return cmp + }, traits.ComparerType)), + + function(operators.Greater, + decls.FunctionDocs( + `compare two values and return true if the first value is`, + `greater than the second`), + decls.Overload(overloads.GreaterBool, + argTypes(types.BoolType, types.BoolType), types.BoolType, + decls.OverloadExamples(`true > false // true`)), + decls.Overload(overloads.GreaterInt64, + argTypes(types.IntType, types.IntType), types.BoolType, + decls.OverloadExamples(`3 > -2 // true`)), + decls.Overload(overloads.GreaterInt64Double, + argTypes(types.IntType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2 > 1.1 // true`)), + decls.Overload(overloads.GreaterInt64Uint64, + argTypes(types.IntType, types.UintType), types.BoolType, + decls.OverloadExamples(`3 > 2u // true`)), + decls.Overload(overloads.GreaterUint64, + argTypes(types.UintType, types.UintType), types.BoolType, + decls.OverloadExamples(`2u > 1u // true`)), + decls.Overload(overloads.GreaterUint64Double, + argTypes(types.UintType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2u > 1.9 // true`)), + decls.Overload(overloads.GreaterUint64Int64, + argTypes(types.UintType, types.IntType), types.BoolType, + decls.OverloadExamples(`23u > 1 // true`, `0u > -1 // true`)), + decls.Overload(overloads.GreaterDouble, + argTypes(types.DoubleType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2.4 > 2.0 // true`)), + decls.Overload(overloads.GreaterDoubleInt64, + argTypes(types.DoubleType, types.IntType), types.BoolType, + decls.OverloadExamples(`3.1 > 3 // true`, `3.0 > 3 // false`)), + decls.Overload(overloads.GreaterDoubleUint64, + argTypes(types.DoubleType, types.UintType), types.BoolType, + decls.OverloadExamples(`2.3 > 2u // true`)), + decls.Overload(overloads.GreaterString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples(`'b' > 'a' // true`)), + decls.Overload(overloads.GreaterBytes, + argTypes(types.BytesType, types.BytesType), types.BoolType, + decls.OverloadExamples(`b'world' > b'hello' // true`)), + decls.Overload(overloads.GreaterTimestamp, + argTypes(types.TimestampType, types.TimestampType), types.BoolType, + decls.OverloadExamples(`timestamp('2002-02-02T02:03:04Z') > timestamp('2001-01-01T02:03:04Z') // true`)), + decls.Overload(overloads.GreaterDuration, + argTypes(types.DurationType, types.DurationType), types.BoolType, + decls.OverloadExamples(`duration('1ms') > duration('1us') // true`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + cmp := lhs.(traits.Comparer).Compare(rhs) + if cmp == types.IntOne { + return types.True + } + if cmp == types.IntNegOne || cmp == types.IntZero { + return types.False + } + return cmp + }, traits.ComparerType)), + + function(operators.GreaterEquals, + decls.FunctionDocs( + `compare two values and return true if the first value is`, + `greater than or equal to the second`), + decls.Overload(overloads.GreaterEqualsBool, + argTypes(types.BoolType, types.BoolType), types.BoolType, + decls.OverloadExamples(`true >= false // true`)), + decls.Overload(overloads.GreaterEqualsInt64, + argTypes(types.IntType, types.IntType), types.BoolType, + decls.OverloadExamples(`3 >= -2 // true`)), + decls.Overload(overloads.GreaterEqualsInt64Double, + argTypes(types.IntType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2 >= 1.1 // true`, `1 >= 1.0 // true`)), + decls.Overload(overloads.GreaterEqualsInt64Uint64, + argTypes(types.IntType, types.UintType), types.BoolType, + decls.OverloadExamples(`3 >= 2u // true`)), + decls.Overload(overloads.GreaterEqualsUint64, + argTypes(types.UintType, types.UintType), types.BoolType, + decls.OverloadExamples(`2u >= 1u // true`)), + decls.Overload(overloads.GreaterEqualsUint64Double, + argTypes(types.UintType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2u >= 1.9 // true`)), + decls.Overload(overloads.GreaterEqualsUint64Int64, + argTypes(types.UintType, types.IntType), types.BoolType, + decls.OverloadExamples(`23u >= 1 // true`, `1u >= 1 // true`)), + decls.Overload(overloads.GreaterEqualsDouble, + argTypes(types.DoubleType, types.DoubleType), types.BoolType, + decls.OverloadExamples(`2.4 >= 2.0 // true`)), + decls.Overload(overloads.GreaterEqualsDoubleInt64, + argTypes(types.DoubleType, types.IntType), types.BoolType, + decls.OverloadExamples(`3.1 >= 3 // true`)), + decls.Overload(overloads.GreaterEqualsDoubleUint64, + argTypes(types.DoubleType, types.UintType), types.BoolType, + decls.OverloadExamples(`2.3 >= 2u // true`)), + decls.Overload(overloads.GreaterEqualsString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples(`'b' >= 'a' // true`)), + decls.Overload(overloads.GreaterEqualsBytes, + argTypes(types.BytesType, types.BytesType), types.BoolType, + decls.OverloadExamples(`b'world' >= b'hello' // true`)), + decls.Overload(overloads.GreaterEqualsTimestamp, + argTypes(types.TimestampType, types.TimestampType), types.BoolType, + decls.OverloadExamples(`timestamp('2001-01-01T02:03:04Z') >= timestamp('2001-01-01T02:03:04Z') // true`)), + decls.Overload(overloads.GreaterEqualsDuration, + argTypes(types.DurationType, types.DurationType), types.BoolType, + decls.OverloadExamples(`duration('60s') >= duration('1m') // true`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + cmp := lhs.(traits.Comparer).Compare(rhs) + if cmp == types.IntOne || cmp == types.IntZero { + return types.True + } + if cmp == types.IntNegOne { + return types.False + } + return cmp + }, traits.ComparerType)), + + // Indexing + function(operators.Index, + decls.FunctionDocs(`select a value from a list by index, or value from a map by key`), + decls.Overload(overloads.IndexList, argTypes(listOfA, types.IntType), paramA, + decls.OverloadExamples(`[1, 2, 3][1] // 2`)), + decls.Overload(overloads.IndexMap, argTypes(mapOfAB, paramA), paramB, + decls.OverloadExamples( + `{'key': 'value'}['key'] // 'value'`, + `{'key': 'value'}['missing'] // error`)), + decls.SingletonBinaryBinding(func(lhs, rhs ref.Val) ref.Val { + return lhs.(traits.Indexer).Get(rhs) + }, traits.IndexerType)), + + // Collections operators + function(operators.In, + decls.FunctionDocs(`test whether a value exists in a list, or a key exists in a map`), + decls.Overload(overloads.InList, argTypes(paramA, listOfA), types.BoolType, + decls.OverloadExamples( + `2 in [1, 2, 3] // true`, + `"a" in ["b", "c"] // false`)), + decls.Overload(overloads.InMap, argTypes(paramA, mapOfAB), types.BoolType, + decls.OverloadExamples( + `'key1' in {'key1': 'value1', 'key2': 'value2'} // true`, + `3 in {1: "one", 2: "two"} // false`)), + decls.SingletonBinaryBinding(inAggregate)), + function(operators.OldIn, + decls.DisableDeclaration(true), // safe deprecation + decls.Overload(overloads.InList, argTypes(paramA, listOfA), types.BoolType), + decls.Overload(overloads.InMap, argTypes(paramA, mapOfAB), types.BoolType), + decls.SingletonBinaryBinding(inAggregate)), + function(overloads.DeprecatedIn, + decls.DisableDeclaration(true), // safe deprecation + decls.Overload(overloads.InList, argTypes(paramA, listOfA), types.BoolType), + decls.Overload(overloads.InMap, argTypes(paramA, mapOfAB), types.BoolType), + decls.SingletonBinaryBinding(inAggregate)), + function(overloads.Size, + decls.FunctionDocs( + `compute the size of a list or map, the number of characters in a string,`, + `or the number of bytes in a sequence`), + decls.Overload(overloads.SizeBytes, argTypes(types.BytesType), types.IntType, + decls.OverloadExamples(`size(b'123') // 3`)), + decls.MemberOverload(overloads.SizeBytesInst, argTypes(types.BytesType), types.IntType, + decls.OverloadExamples(`b'123'.size() // 3`)), + decls.Overload(overloads.SizeList, argTypes(listOfA), types.IntType, + decls.OverloadExamples(`size([1, 2, 3]) // 3`)), + decls.MemberOverload(overloads.SizeListInst, argTypes(listOfA), types.IntType, + decls.OverloadExamples(`[1, 2, 3].size() // 3`)), + decls.Overload(overloads.SizeMap, argTypes(mapOfAB), types.IntType, + decls.OverloadExamples(`size({'a': 1, 'b': 2}) // 2`)), + decls.MemberOverload(overloads.SizeMapInst, argTypes(mapOfAB), types.IntType, + decls.OverloadExamples(`{'a': 1, 'b': 2}.size() // 2`)), + decls.Overload(overloads.SizeString, argTypes(types.StringType), types.IntType, + decls.OverloadExamples(`size('hello') // 5`)), + decls.MemberOverload(overloads.SizeStringInst, argTypes(types.StringType), types.IntType, + decls.OverloadExamples(`'hello'.size() // 5`)), + decls.SingletonUnaryBinding(func(val ref.Val) ref.Val { + return val.(traits.Sizer).Size() + }, traits.SizerType)), + + // Type conversions + function(overloads.TypeConvertType, + decls.FunctionDocs(`convert a value to its type identifier`), + decls.Overload(overloads.TypeConvertType, argTypes(paramA), types.NewTypeTypeWithParam(paramA), + decls.OverloadExamples( + `type(1) // int`, + `type('hello') // string`, + `type(int) // type`, + `type(type) // type`)), + decls.SingletonUnaryBinding(convertToType(types.TypeType))), + + // Bool conversions + function(overloads.TypeConvertBool, + decls.FunctionDocs(`convert a value to a boolean`), + decls.Overload(overloads.BoolToBool, argTypes(types.BoolType), types.BoolType, + + decls.OverloadExamples(`bool(true) // true`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.StringToBool, argTypes(types.StringType), types.BoolType, + + decls.OverloadExamples(`bool('true') // true`, `bool('false') // false`), + decls.UnaryBinding(convertToType(types.BoolType)))), + + // Bytes conversions + function(overloads.TypeConvertBytes, + decls.FunctionDocs(`convert a value to bytes`), + decls.Overload(overloads.BytesToBytes, argTypes(types.BytesType), types.BytesType, + decls.OverloadExamples(`bytes(b'abc') // b'abc'`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.StringToBytes, argTypes(types.StringType), types.BytesType, + decls.OverloadExamples(`bytes('hello') // b'hello'`), + decls.UnaryBinding(convertToType(types.BytesType)))), + + // Double conversions + function(overloads.TypeConvertDouble, + decls.FunctionDocs(`convert a value to a double`), + decls.Overload(overloads.DoubleToDouble, argTypes(types.DoubleType), types.DoubleType, + decls.OverloadExamples(`double(1.23) // 1.23`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.IntToDouble, argTypes(types.IntType), types.DoubleType, + decls.OverloadExamples(`double(123) // 123.0`), + decls.UnaryBinding(convertToType(types.DoubleType))), + decls.Overload(overloads.StringToDouble, argTypes(types.StringType), types.DoubleType, + decls.OverloadExamples(`double('1.23') // 1.23`), + decls.UnaryBinding(convertToType(types.DoubleType))), + decls.Overload(overloads.UintToDouble, argTypes(types.UintType), types.DoubleType, + decls.OverloadExamples(`double(123u) // 123.0`), + decls.UnaryBinding(convertToType(types.DoubleType)))), + + // Duration conversions + function(overloads.TypeConvertDuration, + decls.FunctionDocs(`convert a value to a google.protobuf.Duration`), + decls.Overload(overloads.DurationToDuration, argTypes(types.DurationType), types.DurationType, + decls.OverloadExamples(`duration(duration('1s')) // duration('1s')`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.IntToDuration, argTypes(types.IntType), types.DurationType, + decls.UnaryBinding(convertToType(types.DurationType))), + decls.Overload(overloads.StringToDuration, argTypes(types.StringType), types.DurationType, + decls.OverloadExamples(`duration('1h2m3s') // duration('3723s')`), + decls.UnaryBinding(convertToType(types.DurationType)))), + + // Dyn conversions + function(overloads.TypeConvertDyn, + decls.FunctionDocs(`indicate that the type is dynamic for type-checking purposes`), + decls.Overload(overloads.ToDyn, argTypes(paramA), types.DynType, + decls.OverloadExamples(`dyn(1) // 1`)), + decls.SingletonUnaryBinding(identity)), + + // Int conversions + function(overloads.TypeConvertInt, + decls.FunctionDocs(`convert a value to an int`), + decls.Overload(overloads.IntToInt, argTypes(types.IntType), types.IntType, + decls.OverloadExamples(`int(123) // 123`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.DoubleToInt, argTypes(types.DoubleType), types.IntType, + decls.OverloadExamples(`int(123.45) // 123`), + decls.UnaryBinding(convertToType(types.IntType))), + decls.Overload(overloads.DurationToInt, argTypes(types.DurationType), types.IntType, + decls.OverloadExamples(`int(duration('1s')) // 1000000000`), + decls.UnaryBinding(convertToType(types.IntType))), // Duration to nanoseconds + decls.Overload(overloads.StringToInt, argTypes(types.StringType), types.IntType, + decls.OverloadExamples(`int('123') // 123`, `int('-456') // -456`), + decls.UnaryBinding(convertToType(types.IntType))), + decls.Overload(overloads.TimestampToInt, argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`int(timestamp('1970-01-01T00:00:01Z')) // 1`), + decls.UnaryBinding(convertToType(types.IntType))), // Timestamp to epoch seconds + decls.Overload(overloads.UintToInt, argTypes(types.UintType), types.IntType, + decls.OverloadExamples(`int(123u) // 123`), + decls.UnaryBinding(convertToType(types.IntType)))), + + // String conversions + function(overloads.TypeConvertString, + decls.FunctionDocs(`convert a value to a string`), + decls.Overload(overloads.StringToString, argTypes(types.StringType), types.StringType, + decls.OverloadExamples(`string('hello') // 'hello'`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.BoolToString, argTypes(types.BoolType), types.StringType, + decls.OverloadExamples(`string(true) // 'true'`), + decls.UnaryBinding(convertToType(types.StringType))), + decls.Overload(overloads.BytesToString, argTypes(types.BytesType), types.StringType, + decls.OverloadExamples(`string(b'hello') // 'hello'`), + decls.UnaryBinding(convertToType(types.StringType))), + decls.Overload(overloads.DoubleToString, argTypes(types.DoubleType), types.StringType, + decls.UnaryBinding(convertToType(types.StringType)), + decls.OverloadExamples(`string(-1.23e4) // '-12300'`)), + decls.Overload(overloads.DurationToString, argTypes(types.DurationType), types.StringType, + decls.OverloadExamples(`string(duration('1h30m')) // '5400s'`), + decls.UnaryBinding(convertToType(types.StringType))), + decls.Overload(overloads.IntToString, argTypes(types.IntType), types.StringType, + decls.OverloadExamples(`string(-123) // '-123'`), + decls.UnaryBinding(convertToType(types.StringType))), + decls.Overload(overloads.TimestampToString, argTypes(types.TimestampType), types.StringType, + decls.OverloadExamples(`string(timestamp('1970-01-01T00:00:00Z')) // '1970-01-01T00:00:00Z'`), + decls.UnaryBinding(convertToType(types.StringType))), + decls.Overload(overloads.UintToString, argTypes(types.UintType), types.StringType, + decls.OverloadExamples(`string(123u) // '123'`), + decls.UnaryBinding(convertToType(types.StringType)))), + + // Timestamp conversions + function(overloads.TypeConvertTimestamp, + decls.FunctionDocs(`convert a value to a google.protobuf.Timestamp`), + decls.Overload(overloads.TimestampToTimestamp, argTypes(types.TimestampType), types.TimestampType, + decls.OverloadExamples(`timestamp(timestamp('2023-01-01T00:00:00Z')) // timestamp('2023-01-01T00:00:00Z')`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.IntToTimestamp, argTypes(types.IntType), types.TimestampType, + decls.OverloadExamples(`timestamp(1) // timestamp('1970-01-01T00:00:01Z')`), // Epoch seconds to Timestamp + decls.UnaryBinding(convertToType(types.TimestampType))), + decls.Overload(overloads.StringToTimestamp, argTypes(types.StringType), types.TimestampType, + decls.OverloadExamples(`timestamp('2025-01-01T12:34:56Z') // timestamp('2025-01-01T12:34:56Z')`), + decls.UnaryBinding(convertToType(types.TimestampType)))), + + // Uint conversions + function(overloads.TypeConvertUint, + decls.FunctionDocs(`convert a value to a uint`), + decls.Overload(overloads.UintToUint, argTypes(types.UintType), types.UintType, + decls.OverloadExamples(`uint(123u) // 123u`), + decls.UnaryBinding(identity)), + decls.Overload(overloads.DoubleToUint, argTypes(types.DoubleType), types.UintType, + decls.OverloadExamples(`uint(123.45) // 123u`), + decls.UnaryBinding(convertToType(types.UintType))), + decls.Overload(overloads.IntToUint, argTypes(types.IntType), types.UintType, + decls.OverloadExamples(`uint(123) // 123u`), + decls.UnaryBinding(convertToType(types.UintType))), + decls.Overload(overloads.StringToUint, argTypes(types.StringType), types.UintType, + decls.OverloadExamples(`uint('123') // 123u`), + decls.UnaryBinding(convertToType(types.UintType)))), + + // String functions + function(overloads.Contains, + decls.FunctionDocs(`test whether a string contains a substring`), + decls.MemberOverload(overloads.ContainsString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples( + `'hello world'.contains('o w') // true`, + `'hello world'.contains('goodbye') // false`), + decls.BinaryBinding(types.StringContains)), + decls.DisableTypeGuards(true)), + function(overloads.EndsWith, + decls.FunctionDocs(`test whether a string ends with a substring suffix`), + decls.MemberOverload(overloads.EndsWithString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples( + `'hello world'.endsWith('world') // true`, + `'hello world'.endsWith('hello') // false`), + decls.BinaryBinding(types.StringEndsWith)), + decls.DisableTypeGuards(true)), + function(overloads.StartsWith, + decls.FunctionDocs(`test whether a string starts with a substring prefix`), + decls.MemberOverload(overloads.StartsWithString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples( + `'hello world'.startsWith('hello') // true`, + `'hello world'.startsWith('world') // false`), + decls.BinaryBinding(types.StringStartsWith)), + decls.DisableTypeGuards(true)), + function(overloads.Matches, + decls.FunctionDocs(`test whether a string matches an RE2 regular expression`), + decls.Overload(overloads.Matches, argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples( + `matches('123-456', '^[0-9]+(-[0-9]+)?$') // true`, + `matches('hello', '^h.*o$') // true`)), + decls.MemberOverload(overloads.MatchesString, + argTypes(types.StringType, types.StringType), types.BoolType, + decls.OverloadExamples( + `'123-456'.matches('^[0-9]+(-[0-9]+)?$') // true`, + `'hello'.matches('^h.*o$') // true`)), + decls.SingletonBinaryBinding(func(str, pat ref.Val) ref.Val { + return str.(traits.Matcher).Match(pat) + }, traits.MatcherType)), + + // Timestamp / duration functions + function(overloads.TimeGetFullYear, + decls.FunctionDocs(`get the 0-based full year from a timestamp, UTC unless an IANA timezone is specified.`), + decls.MemberOverload(overloads.TimestampToYear, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getFullYear() // 2023`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetFullYear(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToYearWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-01-01T05:30:00Z').getFullYear('-08:00') // 2022`), + decls.BinaryBinding(timestampGetFullYear))), + + function(overloads.TimeGetMonth, + decls.FunctionDocs(`get the 0-based month from a timestamp, UTC unless an IANA timezone is specified.`), + decls.MemberOverload(overloads.TimestampToMonth, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getMonth() // 6`), // July is month 6 + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetMonth(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToMonthWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-01-01T05:30:00Z').getMonth('America/Los_Angeles') // 11`), // December is month 11 + decls.BinaryBinding(timestampGetMonth))), + + function(overloads.TimeGetDayOfYear, + decls.FunctionDocs(`get the 0-based day of the year from a timestamp, UTC unless an IANA timezone is specified.`), + decls.MemberOverload(overloads.TimestampToDayOfYear, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-01-02T00:00:00Z').getDayOfYear() // 1`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetDayOfYear(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToDayOfYearWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-01-01T05:00:00Z').getDayOfYear('America/Los_Angeles') // 364`), + decls.BinaryBinding(timestampGetDayOfYear))), + + function(overloads.TimeGetDayOfMonth, + decls.FunctionDocs(`get the 0-based day of the month from a timestamp, UTC unless an IANA timezone is specified.`), + decls.MemberOverload(overloads.TimestampToDayOfMonthZeroBased, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getDayOfMonth() // 13`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetDayOfMonthZeroBased(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToDayOfMonthZeroBasedWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-01T05:00:00Z').getDayOfMonth('America/Los_Angeles') // 29`), + decls.BinaryBinding(timestampGetDayOfMonthZeroBased))), + + function(overloads.TimeGetDate, + decls.FunctionDocs(`get the 1-based day of the month from a timestamp, UTC unless an IANA timezone is specified.`), + decls.MemberOverload(overloads.TimestampToDayOfMonthOneBased, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getDate() // 14`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetDayOfMonthOneBased(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToDayOfMonthOneBasedWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-01T05:00:00Z').getDate('America/Los_Angeles') // 30`), + decls.BinaryBinding(timestampGetDayOfMonthOneBased))), + + function(overloads.TimeGetDayOfWeek, + decls.FunctionDocs(`get the 0-based day of the week from a timestamp, UTC unless an IANA timezone is specified.`), + decls.MemberOverload(overloads.TimestampToDayOfWeek, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getDayOfWeek() // 5`), // Friday is day 5 + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetDayOfWeek(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToDayOfWeekWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-16T05:00:00Z').getDayOfWeek('America/Los_Angeles') // 6`), // Saturday is day 6 + decls.BinaryBinding(timestampGetDayOfWeek))), + + function(overloads.TimeGetHours, + decls.FunctionDocs(`get the hours portion from a timestamp, or convert a duration to hours`), + decls.MemberOverload(overloads.TimestampToHours, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getHours() // 10`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetHours(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToHoursWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getHours('America/Los_Angeles') // 2`), + decls.BinaryBinding(timestampGetHours)), + decls.MemberOverload(overloads.DurationToHours, + argTypes(types.DurationType), types.IntType, + decls.OverloadExamples(`duration('3723s').getHours() // 1`), + decls.UnaryBinding(types.DurationGetHours))), + + function(overloads.TimeGetMinutes, + decls.FunctionDocs(`get the minutes portion from a timestamp, or convert a duration to minutes`), + decls.MemberOverload(overloads.TimestampToMinutes, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getMinutes() // 30`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetMinutes(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToMinutesWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getMinutes('America/Los_Angeles') // 30`), + decls.BinaryBinding(timestampGetMinutes)), + decls.MemberOverload(overloads.DurationToMinutes, + argTypes(types.DurationType), types.IntType, + decls.OverloadExamples(`duration('3723s').getMinutes() // 62`), + decls.UnaryBinding(types.DurationGetMinutes))), + + function(overloads.TimeGetSeconds, + decls.FunctionDocs(`get the seconds portion from a timestamp, or convert a duration to seconds`), + decls.MemberOverload(overloads.TimestampToSeconds, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getSeconds() // 45`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetSeconds(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToSecondsWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getSeconds('America/Los_Angeles') // 45`), + decls.BinaryBinding(timestampGetSeconds)), + decls.MemberOverload(overloads.DurationToSeconds, + argTypes(types.DurationType), types.IntType, + decls.OverloadExamples(`duration('3723.456s').getSeconds() // 3723`), + decls.UnaryBinding(types.DurationGetSeconds))), + + function(overloads.TimeGetMilliseconds, + decls.FunctionDocs(`get the milliseconds portion from a timestamp`), + decls.MemberOverload(overloads.TimestampToMilliseconds, + argTypes(types.TimestampType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getMilliseconds() // 123`), + decls.UnaryBinding(func(ts ref.Val) ref.Val { + return timestampGetMilliseconds(ts, utcTZ) + })), + decls.MemberOverload(overloads.TimestampToMillisecondsWithTz, + argTypes(types.TimestampType, types.StringType), types.IntType, + decls.OverloadExamples(`timestamp('2023-07-14T10:30:45.123Z').getMilliseconds('America/Los_Angeles') // 123`), + decls.BinaryBinding(timestampGetMilliseconds)), + decls.MemberOverload(overloads.DurationToMilliseconds, + argTypes(types.DurationType), types.IntType, + decls.UnaryBinding(types.DurationGetMilliseconds))), + } +} + +// Functions returns the set of standard library function declarations and definitions for CEL. +func Functions() []*decls.FunctionDecl { + return stdFunctions +} + +// Types returns the set of standard library types for CEL. +func Types() []*decls.VariableDecl { + return stdTypes +} + +func notStrictlyFalse(value ref.Val) ref.Val { + if types.IsBool(value) { + return value + } + return types.True +} + +func inAggregate(lhs ref.Val, rhs ref.Val) ref.Val { + if rhs.Type().HasTrait(traits.ContainerType) { + return rhs.(traits.Container).Contains(lhs) + } + return types.ValOrErr(rhs, "no such overload") +} + +func function(name string, opts ...decls.FunctionOpt) *decls.FunctionDecl { + fn, err := decls.NewFunction(name, opts...) + if err != nil { + panic(err) + } + return fn +} + +func argTypes(args ...*types.Type) []*types.Type { + return args +} + +func noBinaryOverrides(rhs, lhs ref.Val) ref.Val { + return types.NoSuchOverloadErr() +} + +func noFunctionOverrides(args ...ref.Val) ref.Val { + return types.NoSuchOverloadErr() +} + +func identity(val ref.Val) ref.Val { + return val +} + +func convertToType(t ref.Type) functions.UnaryOp { + return func(val ref.Val) ref.Val { + return val.ConvertToType(t) + } +} + +func timestampGetFullYear(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Year()) +} + +func timestampGetMonth(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + // CEL spec indicates that the month should be 0-based, but the Time value + // for Month() is 1-based. + return types.Int(t.Month() - 1) +} + +func timestampGetDayOfYear(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.YearDay() - 1) +} + +func timestampGetDayOfMonthZeroBased(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Day() - 1) +} + +func timestampGetDayOfMonthOneBased(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Day()) +} + +func timestampGetDayOfWeek(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Weekday()) +} + +func timestampGetHours(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Hour()) +} + +func timestampGetMinutes(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Minute()) +} + +func timestampGetSeconds(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Second()) +} + +func timestampGetMilliseconds(ts, tz ref.Val) ref.Val { + t, err := inTimeZone(ts, tz) + if err != nil { + return types.NewErrFromString(err.Error()) + } + return types.Int(t.Nanosecond() / 1000000) +} + +func inTimeZone(ts, tz ref.Val) (time.Time, error) { + t := ts.(types.Timestamp) + val := string(tz.(types.String)) + ind := strings.Index(val, ":") + if ind == -1 { + loc, err := time.LoadLocation(val) + if err != nil { + return time.Time{}, err + } + return t.In(loc), nil + } + + // If the input is not the name of a timezone (for example, 'US/Central'), it should be a numerical offset from UTC + // in the format ^(+|-)(0[0-9]|1[0-4]):[0-5][0-9]$. The numerical input is parsed in terms of hours and minutes. + hr, err := strconv.Atoi(string(val[0:ind])) + if err != nil { + return time.Time{}, err + } + min, err := strconv.Atoi(string(val[ind+1:])) + if err != nil { + return time.Time{}, err + } + var offset int + if string(val[0]) == "-" { + offset = hr*60 - min + } else { + offset = hr*60 + min + } + secondsEastOfUTC := int((time.Duration(offset) * time.Minute).Seconds()) + timezone := time.FixedZone("", secondsEastOfUTC) + return t.In(timezone), nil +} diff --git a/vendor/github.com/google/cel-go/common/types/BUILD.bazel b/vendor/github.com/google/cel-go/common/types/BUILD.bazel new file mode 100644 index 0000000000..7082bc7550 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/BUILD.bazel @@ -0,0 +1,93 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "any_value.go", + "bool.go", + "bytes.go", + "compare.go", + "double.go", + "duration.go", + "err.go", + "int.go", + "iterator.go", + "json_value.go", + "format.go", + "list.go", + "map.go", + "null.go", + "object.go", + "optional.go", + "overflow.go", + "provider.go", + "string.go", + "timestamp.go", + "types.go", + "uint.go", + "unknown.go", + "util.go", + ], + importpath = "github.com/google/cel-go/common/types", + deps = [ + "//checker/decls:go_default_library", + "//common/overloads:go_default_library", + "//common/types/pb:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + "@com_github_stoewer_go_strcase//:go_default_library", + "@dev_cel_expr//:expr", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//encoding/protojson:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//reflect/protoreflect:go_default_library", + "@org_golang_google_protobuf//types/dynamicpb:go_default_library", + "@org_golang_google_protobuf//types/known/anypb:go_default_library", + "@org_golang_google_protobuf//types/known/durationpb:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + "@org_golang_google_protobuf//types/known/timestamppb:go_default_library", + "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "bool_test.go", + "bytes_test.go", + "double_test.go", + "duration_test.go", + "int_test.go", + "json_list_test.go", + "json_struct_test.go", + "list_test.go", + "map_test.go", + "null_test.go", + "object_test.go", + "optional_test.go", + "provider_test.go", + "string_test.go", + "timestamp_test.go", + "types_test.go", + "uint_test.go", + "unknown_test.go", + "util_test.go", + ], + embed = [":go_default_library"], + deps = [ + "//common/types/ref:go_default_library", + "//test:go_default_library", + "//test/proto3pb:test_all_types_go_proto", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//encoding/protojson:go_default_library", + "@org_golang_google_protobuf//types/known/anypb:go_default_library", + "@org_golang_google_protobuf//types/known/durationpb:go_default_library", + "@org_golang_google_protobuf//types/known/timestamppb:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/types/any_value.go b/vendor/github.com/google/cel-go/common/types/any_value.go new file mode 100644 index 0000000000..cda0f13acf --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/any_value.go @@ -0,0 +1,24 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "reflect" + + anypb "google.golang.org/protobuf/types/known/anypb" +) + +// anyValueType constant representing the reflected type of google.protobuf.Any. +var anyValueType = reflect.TypeOf(&anypb.Any{}) diff --git a/vendor/github.com/google/cel-go/common/types/bool.go b/vendor/github.com/google/cel-go/common/types/bool.go new file mode 100644 index 0000000000..1f9e107392 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/bool.go @@ -0,0 +1,150 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "strconv" + "strings" + + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// Bool type that implements ref.Val and supports comparison and negation. +type Bool bool + +var ( + // boolWrapperType golang reflected type for protobuf bool wrapper type. + boolWrapperType = reflect.TypeOf(&wrapperspb.BoolValue{}) +) + +// Boolean constants +const ( + False = Bool(false) + True = Bool(true) +) + +// Compare implements the traits.Comparer interface method. +func (b Bool) Compare(other ref.Val) ref.Val { + otherBool, ok := other.(Bool) + if !ok { + return ValOrErr(other, "no such overload") + } + if b == otherBool { + return IntZero + } + if !b && otherBool { + return IntNegOne + } + return IntOne +} + +// ConvertToNative implements the ref.Val interface method. +func (b Bool) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.Bool: + return reflect.ValueOf(b).Convert(typeDesc).Interface(), nil + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Primitives must be wrapped to a wrapperspb.BoolValue before being packed into an Any. + return anypb.New(wrapperspb.Bool(bool(b))) + case boolWrapperType: + // Convert the bool to a wrapperspb.BoolValue. + return wrapperspb.Bool(bool(b)), nil + case jsonValueType: + // Return the bool as a new structpb.Value. + return structpb.NewBoolValue(bool(b)), nil + default: + if typeDesc.Elem().Kind() == reflect.Bool { + p := bool(b) + return &p, nil + } + } + case reflect.Interface: + bv := b.Value() + if reflect.TypeOf(bv).Implements(typeDesc) { + return bv, nil + } + if reflect.TypeOf(b).Implements(typeDesc) { + return b, nil + } + } + return nil, fmt.Errorf("type conversion error from bool to '%v'", typeDesc) +} + +// ConvertToType implements the ref.Val interface method. +func (b Bool) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case StringType: + return String(strconv.FormatBool(bool(b))) + case BoolType: + return b + case TypeType: + return BoolType + } + return NewErr("type conversion error from '%v' to '%v'", BoolType, typeVal) +} + +// Equal implements the ref.Val interface method. +func (b Bool) Equal(other ref.Val) ref.Val { + otherBool, ok := other.(Bool) + return Bool(ok && b == otherBool) +} + +// IsZeroValue returns true if the boolean value is false. +func (b Bool) IsZeroValue() bool { + return b == False +} + +// Negate implements the traits.Negater interface method. +func (b Bool) Negate() ref.Val { + return !b +} + +// Type implements the ref.Val interface method. +func (b Bool) Type() ref.Type { + return BoolType +} + +// Value implements the ref.Val interface method. +func (b Bool) Value() any { + return bool(b) +} + +func (b Bool) format(sb *strings.Builder) { + if b { + sb.WriteString("true") + } else { + sb.WriteString("false") + } +} + +// IsBool returns whether the input ref.Val or ref.Type is equal to BoolType. +func IsBool(elem ref.Val) bool { + switch v := elem.(type) { + case Bool: + return true + case ref.Val: + return v.Type() == BoolType + default: + return false + } +} diff --git a/vendor/github.com/google/cel-go/common/types/bytes.go b/vendor/github.com/google/cel-go/common/types/bytes.go new file mode 100644 index 0000000000..b59e1fc208 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/bytes.go @@ -0,0 +1,155 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "bytes" + "encoding/base64" + "fmt" + "reflect" + "strings" + "unicode/utf8" + + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// Bytes type that implements ref.Val and supports add, compare, and size +// operations. +type Bytes []byte + +var ( + // byteWrapperType golang reflected type for protobuf bytes wrapper type. + byteWrapperType = reflect.TypeOf(&wrapperspb.BytesValue{}) +) + +// Add implements traits.Adder interface method by concatenating byte sequences. +func (b Bytes) Add(other ref.Val) ref.Val { + otherBytes, ok := other.(Bytes) + if !ok { + return ValOrErr(other, "no such overload") + } + return append(b, otherBytes...) +} + +// Compare implements traits.Comparer interface method by lexicographic ordering. +func (b Bytes) Compare(other ref.Val) ref.Val { + otherBytes, ok := other.(Bytes) + if !ok { + return ValOrErr(other, "no such overload") + } + return Int(bytes.Compare(b, otherBytes)) +} + +// ConvertToNative implements the ref.Val interface method. +func (b Bytes) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.Array: + if len(b) != typeDesc.Len() { + return nil, fmt.Errorf("[%d]byte not assignable to [%d]byte array", len(b), typeDesc.Len()) + } + refArrPtr := reflect.New(reflect.ArrayOf(len(b), typeDesc.Elem())) + refArr := refArrPtr.Elem() + for i, byt := range b { + refArr.Index(i).Set(reflect.ValueOf(byt).Convert(typeDesc.Elem())) + } + return refArr.Interface(), nil + case reflect.Slice: + return reflect.ValueOf(b).Convert(typeDesc).Interface(), nil + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Primitives must be wrapped before being set on an Any field. + return anypb.New(wrapperspb.Bytes([]byte(b))) + case byteWrapperType: + // Convert the bytes to a wrapperspb.BytesValue. + return wrapperspb.Bytes([]byte(b)), nil + case jsonValueType: + // CEL follows the proto3 to JSON conversion by encoding bytes to a string via base64. + // The encoding below matches the golang 'encoding/json' behavior during marshaling, + // which uses base64.StdEncoding. + str := base64.StdEncoding.EncodeToString([]byte(b)) + return structpb.NewStringValue(str), nil + } + case reflect.Interface: + bv := b.Value() + if reflect.TypeOf(bv).Implements(typeDesc) { + return bv, nil + } + if reflect.TypeOf(b).Implements(typeDesc) { + return b, nil + } + } + return nil, fmt.Errorf("type conversion error from Bytes to '%v'", typeDesc) +} + +// ConvertToType implements the ref.Val interface method. +func (b Bytes) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case StringType: + if !utf8.Valid(b) { + return NewErr("invalid UTF-8 in bytes, cannot convert to string") + } + return String(b) + case BytesType: + return b + case TypeType: + return BytesType + } + return NewErr("type conversion error from '%s' to '%s'", BytesType, typeVal) +} + +// Equal implements the ref.Val interface method. +func (b Bytes) Equal(other ref.Val) ref.Val { + otherBytes, ok := other.(Bytes) + return Bool(ok && bytes.Equal(b, otherBytes)) +} + +// IsZeroValue returns true if the byte array is empty. +func (b Bytes) IsZeroValue() bool { + return len(b) == 0 +} + +// Size implements the traits.Sizer interface method. +func (b Bytes) Size() ref.Val { + return Int(len(b)) +} + +// Type implements the ref.Val interface method. +func (b Bytes) Type() ref.Type { + return BytesType +} + +// Value implements the ref.Val interface method. +func (b Bytes) Value() any { + return []byte(b) +} + +func (b Bytes) format(sb *strings.Builder) { + fmt.Fprintf(sb, "b\"%s\"", bytesToOctets([]byte(b))) +} + +// bytesToOctets converts byte sequences to a string using a three digit octal encoded value +// per byte. +func bytesToOctets(byteVal []byte) string { + var b strings.Builder + for _, c := range byteVal { + fmt.Fprintf(&b, "\\%03o", c) + } + return b.String() +} diff --git a/vendor/github.com/google/cel-go/common/types/compare.go b/vendor/github.com/google/cel-go/common/types/compare.go new file mode 100644 index 0000000000..e196826180 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/compare.go @@ -0,0 +1,97 @@ +// Copyright 2021 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "math" + + "github.com/google/cel-go/common/types/ref" +) + +func compareDoubleInt(d Double, i Int) Int { + if d < math.MinInt64 { + return IntNegOne + } + if d > math.MaxInt64 { + return IntOne + } + return compareDouble(d, Double(i)) +} + +func compareIntDouble(i Int, d Double) Int { + return -compareDoubleInt(d, i) +} + +func compareDoubleUint(d Double, u Uint) Int { + if d < 0 { + return IntNegOne + } + if d > math.MaxUint64 { + return IntOne + } + return compareDouble(d, Double(u)) +} + +func compareUintDouble(u Uint, d Double) Int { + return -compareDoubleUint(d, u) +} + +func compareIntUint(i Int, u Uint) Int { + if i < 0 || u > math.MaxInt64 { + return IntNegOne + } + cmp := i - Int(u) + if cmp < 0 { + return IntNegOne + } + if cmp > 0 { + return IntOne + } + return IntZero +} + +func compareUintInt(u Uint, i Int) Int { + return -compareIntUint(i, u) +} + +func compareDouble(a, b Double) Int { + if a < b { + return IntNegOne + } + if a > b { + return IntOne + } + return IntZero +} + +func compareInt(a, b Int) ref.Val { + if a < b { + return IntNegOne + } + if a > b { + return IntOne + } + return IntZero +} + +func compareUint(a, b Uint) ref.Val { + if a < b { + return IntNegOne + } + if a > b { + return IntOne + } + return IntZero +} diff --git a/vendor/github.com/google/cel-go/common/types/doc.go b/vendor/github.com/google/cel-go/common/types/doc.go new file mode 100644 index 0000000000..5f641d7043 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/doc.go @@ -0,0 +1,17 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package types contains the types, traits, and utilities common to all +// components of expression handling. +package types diff --git a/vendor/github.com/google/cel-go/common/types/double.go b/vendor/github.com/google/cel-go/common/types/double.go new file mode 100644 index 0000000000..1e7de9d6e1 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/double.go @@ -0,0 +1,233 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "math" + "reflect" + "strconv" + "strings" + + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// Double type that implements ref.Val, comparison, and mathematical +// operations. +type Double float64 + +var ( + // doubleWrapperType reflected type for protobuf double wrapper type. + doubleWrapperType = reflect.TypeOf(&wrapperspb.DoubleValue{}) + + // floatWrapperType reflected type for protobuf float wrapper type. + floatWrapperType = reflect.TypeOf(&wrapperspb.FloatValue{}) +) + +// Add implements traits.Adder.Add. +func (d Double) Add(other ref.Val) ref.Val { + otherDouble, ok := other.(Double) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + return d + otherDouble +} + +// Compare implements traits.Comparer.Compare. +func (d Double) Compare(other ref.Val) ref.Val { + if math.IsNaN(float64(d)) { + return NewErr("NaN values cannot be ordered") + } + switch ov := other.(type) { + case Double: + if math.IsNaN(float64(ov)) { + return NewErr("NaN values cannot be ordered") + } + return compareDouble(d, ov) + case Int: + return compareDoubleInt(d, ov) + case Uint: + return compareDoubleUint(d, ov) + default: + return MaybeNoSuchOverloadErr(other) + } +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (d Double) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.Float32: + v := float32(d) + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Float64: + v := float64(d) + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Primitives must be wrapped before being set on an Any field. + return anypb.New(wrapperspb.Double(float64(d))) + case doubleWrapperType: + // Convert to a wrapperspb.DoubleValue + return wrapperspb.Double(float64(d)), nil + case floatWrapperType: + // Convert to a wrapperspb.FloatValue (with truncation). + return wrapperspb.Float(float32(d)), nil + case jsonValueType: + // Note, there are special cases for proto3 to json conversion that + // expect the floating point value to be converted to a NaN, + // Infinity, or -Infinity string values, but the jsonpb string + // marshaling of the protobuf.Value will handle this conversion. + return structpb.NewNumberValue(float64(d)), nil + } + switch typeDesc.Elem().Kind() { + case reflect.Float32: + v := float32(d) + p := reflect.New(typeDesc.Elem()) + p.Elem().Set(reflect.ValueOf(v).Convert(typeDesc.Elem())) + return p.Interface(), nil + case reflect.Float64: + v := float64(d) + p := reflect.New(typeDesc.Elem()) + p.Elem().Set(reflect.ValueOf(v).Convert(typeDesc.Elem())) + return p.Interface(), nil + } + case reflect.Interface: + dv := d.Value() + if reflect.TypeOf(dv).Implements(typeDesc) { + return dv, nil + } + if reflect.TypeOf(d).Implements(typeDesc) { + return d, nil + } + } + return nil, fmt.Errorf("type conversion error from Double to '%v'", typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (d Double) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case IntType: + i, err := doubleToInt64Checked(float64(d)) + if err != nil { + return WrapErr(err) + } + return Int(i) + case UintType: + i, err := doubleToUint64Checked(float64(d)) + if err != nil { + return WrapErr(err) + } + return Uint(i) + case DoubleType: + return d + case StringType: + return String(fmt.Sprintf("%g", float64(d))) + case TypeType: + return DoubleType + } + return NewErr("type conversion error from '%s' to '%s'", DoubleType, typeVal) +} + +// Divide implements traits.Divider.Divide. +func (d Double) Divide(other ref.Val) ref.Val { + otherDouble, ok := other.(Double) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + return d / otherDouble +} + +// Equal implements ref.Val.Equal. +func (d Double) Equal(other ref.Val) ref.Val { + if math.IsNaN(float64(d)) { + return False + } + switch ov := other.(type) { + case Double: + if math.IsNaN(float64(ov)) { + return False + } + return Bool(d == ov) + case Int: + return Bool(compareDoubleInt(d, ov) == 0) + case Uint: + return Bool(compareDoubleUint(d, ov) == 0) + default: + return False + } +} + +// IsZeroValue returns true if double value is 0.0 +func (d Double) IsZeroValue() bool { + return float64(d) == 0.0 +} + +// Multiply implements traits.Multiplier.Multiply. +func (d Double) Multiply(other ref.Val) ref.Val { + otherDouble, ok := other.(Double) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + return d * otherDouble +} + +// Negate implements traits.Negater.Negate. +func (d Double) Negate() ref.Val { + return -d +} + +// Subtract implements traits.Subtractor.Subtract. +func (d Double) Subtract(subtrahend ref.Val) ref.Val { + subtraDouble, ok := subtrahend.(Double) + if !ok { + return MaybeNoSuchOverloadErr(subtrahend) + } + return d - subtraDouble +} + +// Type implements ref.Val.Type. +func (d Double) Type() ref.Type { + return DoubleType +} + +// Value implements ref.Val.Value. +func (d Double) Value() any { + return float64(d) +} + +func (d Double) format(sb *strings.Builder) { + if math.IsNaN(float64(d)) { + sb.WriteString(`double("NaN")`) + return + } + if math.IsInf(float64(d), -1) { + sb.WriteString(`double("-Infinity")`) + return + } + if math.IsInf(float64(d), 1) { + sb.WriteString(`double("Infinity")`) + return + } + s := strconv.FormatFloat(float64(d), 'f', -1, 64) + sb.WriteString(s) + if !strings.ContainsRune(s, '.') { + sb.WriteString(".0") + } +} diff --git a/vendor/github.com/google/cel-go/common/types/duration.go b/vendor/github.com/google/cel-go/common/types/duration.go new file mode 100644 index 0000000000..be58d567ed --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/duration.go @@ -0,0 +1,227 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "strconv" + "strings" + "time" + + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + dpb "google.golang.org/protobuf/types/known/durationpb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +// Duration type that implements ref.Val and supports add, compare, negate, +// and subtract operators. This type is also a receiver which means it can +// participate in dispatch to receiver functions. +type Duration struct { + time.Duration +} + +func durationOf(d time.Duration) Duration { + return Duration{Duration: d} +} + +var ( + durationValueType = reflect.TypeOf(&dpb.Duration{}) + + durationZeroArgOverloads = map[string]func(ref.Val) ref.Val{ + overloads.TimeGetHours: DurationGetHours, + overloads.TimeGetMinutes: DurationGetMinutes, + overloads.TimeGetSeconds: DurationGetSeconds, + overloads.TimeGetMilliseconds: DurationGetMilliseconds, + } +) + +// Add implements traits.Adder.Add. +func (d Duration) Add(other ref.Val) ref.Val { + switch other.Type() { + case DurationType: + dur2 := other.(Duration) + val, err := addDurationChecked(d.Duration, dur2.Duration) + if err != nil { + return WrapErr(err) + } + return durationOf(val) + case TimestampType: + ts := other.(Timestamp).Time + val, err := addTimeDurationChecked(ts, d.Duration) + if err != nil { + return WrapErr(err) + } + return timestampOf(val) + } + return MaybeNoSuchOverloadErr(other) +} + +// Compare implements traits.Comparer.Compare. +func (d Duration) Compare(other ref.Val) ref.Val { + otherDur, ok := other.(Duration) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + d1 := d.Duration + d2 := otherDur.Duration + switch { + case d1 < d2: + return IntNegOne + case d1 > d2: + return IntOne + default: + return IntZero + } +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (d Duration) ConvertToNative(typeDesc reflect.Type) (any, error) { + // If the duration is already assignable to the desired type return it. + if reflect.TypeOf(d.Duration).AssignableTo(typeDesc) { + return d.Duration, nil + } + if reflect.TypeOf(d).AssignableTo(typeDesc) { + return d, nil + } + switch typeDesc { + case anyValueType: + // Pack the duration as a dpb.Duration into an Any value. + return anypb.New(dpb.New(d.Duration)) + case durationValueType: + // Unwrap the CEL value to its underlying proto value. + return dpb.New(d.Duration), nil + case jsonValueType: + // CEL follows the proto3 to JSON conversion. + // Note, using jsonpb would wrap the result in extra double quotes. + v := d.ConvertToType(StringType) + if IsError(v) { + return nil, v.(*Err) + } + return structpb.NewStringValue(string(v.(String))), nil + } + return nil, fmt.Errorf("type conversion error from 'Duration' to '%v'", typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (d Duration) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case StringType: + return String(strconv.FormatFloat(d.Seconds(), 'f', -1, 64) + "s") + case IntType: + return Int(d.Duration) + case DurationType: + return d + case TypeType: + return DurationType + } + return NewErr("type conversion error from '%s' to '%s'", DurationType, typeVal) +} + +// Equal implements ref.Val.Equal. +func (d Duration) Equal(other ref.Val) ref.Val { + otherDur, ok := other.(Duration) + return Bool(ok && d.Duration == otherDur.Duration) +} + +// IsZeroValue returns true if the duration value is zero +func (d Duration) IsZeroValue() bool { + return d.Duration == 0 +} + +// Negate implements traits.Negater.Negate. +func (d Duration) Negate() ref.Val { + val, err := negateDurationChecked(d.Duration) + if err != nil { + return WrapErr(err) + } + return durationOf(val) +} + +// Receive implements traits.Receiver.Receive. +func (d Duration) Receive(function string, overload string, args []ref.Val) ref.Val { + if len(args) == 0 { + if f, found := durationZeroArgOverloads[function]; found { + return f(d) + } + } + return NoSuchOverloadErr() +} + +// Subtract implements traits.Subtractor.Subtract. +func (d Duration) Subtract(subtrahend ref.Val) ref.Val { + subtraDur, ok := subtrahend.(Duration) + if !ok { + return MaybeNoSuchOverloadErr(subtrahend) + } + val, err := subtractDurationChecked(d.Duration, subtraDur.Duration) + if err != nil { + return WrapErr(err) + } + return durationOf(val) +} + +// Type implements ref.Val.Type. +func (d Duration) Type() ref.Type { + return DurationType +} + +// Value implements ref.Val.Value. +func (d Duration) Value() any { + return d.Duration +} + +func (d Duration) format(sb *strings.Builder) { + fmt.Fprintf(sb, `duration("%ss")`, strconv.FormatFloat(d.Seconds(), 'f', -1, 64)) +} + +// DurationGetHours returns the duration in hours. +func DurationGetHours(val ref.Val) ref.Val { + dur, ok := val.(Duration) + if !ok { + return MaybeNoSuchOverloadErr(val) + } + return Int(dur.Hours()) +} + +// DurationGetMinutes returns duration in minutes. +func DurationGetMinutes(val ref.Val) ref.Val { + dur, ok := val.(Duration) + if !ok { + return MaybeNoSuchOverloadErr(val) + } + return Int(dur.Minutes()) +} + +// DurationGetSeconds returns duration in seconds. +func DurationGetSeconds(val ref.Val) ref.Val { + dur, ok := val.(Duration) + if !ok { + return MaybeNoSuchOverloadErr(val) + } + return Int(dur.Seconds()) +} + +// DurationGetMilliseconds returns duration in milliseconds. +func DurationGetMilliseconds(val ref.Val) ref.Val { + dur, ok := val.(Duration) + if !ok { + return MaybeNoSuchOverloadErr(val) + } + return Int(dur.Milliseconds()) +} diff --git a/vendor/github.com/google/cel-go/common/types/err.go b/vendor/github.com/google/cel-go/common/types/err.go new file mode 100644 index 0000000000..17ab1a95e5 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/err.go @@ -0,0 +1,175 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "errors" + "fmt" + "reflect" + + "github.com/google/cel-go/common/types/ref" +) + +// Error interface which allows types types.Err values to be treated as error values. +type Error interface { + error + ref.Val +} + +// Err type which extends the built-in go error and implements ref.Val. +type Err struct { + error + id int64 +} + +var ( + // ErrType singleton. + ErrType = NewOpaqueType("error") + + // errDivideByZero is an error indicating a division by zero of an integer value. + errDivideByZero = errors.New("division by zero") + // errModulusByZero is an error indicating a modulus by zero of an integer value. + errModulusByZero = errors.New("modulus by zero") + // errIntOverflow is an error representing integer overflow. + errIntOverflow = errors.New("integer overflow") + // errUintOverflow is an error representing unsigned integer overflow. + errUintOverflow = errors.New("unsigned integer overflow") + // errDurationOverflow is an error representing duration overflow. + errDurationOverflow = errors.New("duration overflow") + // errTimestampOverflow is an error representing timestamp overflow. + errTimestampOverflow = errors.New("timestamp overflow") + celErrTimestampOverflow = &Err{error: errTimestampOverflow} + + // celErrNoSuchOverload indicates that the call arguments did not match a supported method signature. + celErrNoSuchOverload = NewErr("no such overload") +) + +// NewErr creates a new Err described by the format string and args. +// TODO: Audit the use of this function and standardize the error messages and codes. +func NewErr(format string, args ...any) ref.Val { + return &Err{error: fmt.Errorf(format, args...)} +} + +// NewErrFromString creates a new Err with the provided message. +// TODO: Audit the use of this function and standardize the error messages and codes. +func NewErrFromString(message string) ref.Val { + return &Err{error: errors.New(message)} +} + +// NewErrWithNodeID creates a new Err described by the format string and args. +// TODO: Audit the use of this function and standardize the error messages and codes. +func NewErrWithNodeID(id int64, format string, args ...any) ref.Val { + return &Err{error: fmt.Errorf(format, args...), id: id} +} + +// LabelErrNode returns val unaltered it is not an Err or if the error has a non-zero +// AST node ID already present. Otherwise the id is added to the error for +// recovery with the Err.NodeID method. +func LabelErrNode(id int64, val ref.Val) ref.Val { + if err, ok := val.(*Err); ok && err.id == 0 { + err.id = id + return err + } + return val +} + +// NoSuchOverloadErr returns a new types.Err instance with a no such overload message. +func NoSuchOverloadErr() ref.Val { + return celErrNoSuchOverload +} + +// UnsupportedRefValConversionErr returns a types.NewErr instance with a no such conversion +// message that indicates that the native value could not be converted to a CEL ref.Val. +func UnsupportedRefValConversionErr(val any) ref.Val { + return NewErr("unsupported conversion to ref.Val: (%T)%v", val, val) +} + +// MaybeNoSuchOverloadErr returns the error or unknown if the input ref.Val is one of these types, +// else a new no such overload error. +func MaybeNoSuchOverloadErr(val ref.Val) ref.Val { + return ValOrErr(val, "no such overload") +} + +// ValOrErr either returns the existing error or creates a new one. +// TODO: Audit the use of this function and standardize the error messages and codes. +func ValOrErr(val ref.Val, format string, args ...any) ref.Val { + if val == nil || !IsUnknownOrError(val) { + return NewErr(format, args...) + } + return val +} + +// WrapErr wraps an existing Go error value into a CEL Err value. +func WrapErr(err error) ref.Val { + return &Err{error: err} +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (e *Err) ConvertToNative(typeDesc reflect.Type) (any, error) { + return nil, e.error +} + +// ConvertToType implements ref.Val.ConvertToType. +func (e *Err) ConvertToType(typeVal ref.Type) ref.Val { + // Errors are not convertible to other representations. + return e +} + +// Equal implements ref.Val.Equal. +func (e *Err) Equal(other ref.Val) ref.Val { + // An error cannot be equal to any other value, so it returns itself. + return e +} + +// String implements fmt.Stringer. +func (e *Err) String() string { + return e.error.Error() +} + +// Type implements ref.Val.Type. +func (e *Err) Type() ref.Type { + return ErrType +} + +// Value implements ref.Val.Value. +func (e *Err) Value() any { + return e.error +} + +// NodeID returns the AST node ID of the expression that returned the error. +func (e *Err) NodeID() int64 { + return e.id +} + +// Is implements errors.Is. +func (e *Err) Is(target error) bool { + return e.error.Error() == target.Error() +} + +// Unwrap implements errors.Unwrap. +func (e *Err) Unwrap() error { + return e.error +} + +// IsError returns whether the input element ref.Type or ref.Val is equal to +// the ErrType singleton. +func IsError(val ref.Val) bool { + switch val.(type) { + case *Err: + return true + default: + return false + } +} diff --git a/vendor/github.com/google/cel-go/common/types/format.go b/vendor/github.com/google/cel-go/common/types/format.go new file mode 100644 index 0000000000..174a2bd040 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/format.go @@ -0,0 +1,42 @@ +package types + +import ( + "fmt" + "strings" + + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +type formattable interface { + format(*strings.Builder) +} + +// Format formats the value as a string. The result is only intended for human consumption and ignores errors. +// Do not depend on the output being stable. It may change at any time. +func Format(val ref.Val) string { + var sb strings.Builder + formatTo(&sb, val) + return sb.String() +} + +func formatTo(sb *strings.Builder, val ref.Val) { + if fmtable, ok := val.(formattable); ok { + fmtable.format(sb) + return + } + // All of the builtins implement formattable. Try to deal with traits. + if l, ok := val.(traits.Lister); ok { + formatList(l, sb) + return + } + if m, ok := val.(traits.Mapper); ok { + formatMap(m, sb) + return + } + // This could be an error, unknown, opaque or object. + // Unfortunately we have no consistent way of inspecting + // opaque and object. So we just fallback to fmt.Stringer + // and hope it is relavent. + fmt.Fprintf(sb, "%s", val) +} diff --git a/vendor/github.com/google/cel-go/common/types/int.go b/vendor/github.com/google/cel-go/common/types/int.go new file mode 100644 index 0000000000..0ac1997b70 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/int.go @@ -0,0 +1,308 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "math" + "reflect" + "strconv" + "strings" + "time" + + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// Int type that implements ref.Val as well as comparison and math operators. +type Int int64 + +// Int constants used for comparison results. +const ( + // IntZero is the zero-value for Int + IntZero = Int(0) + IntOne = Int(1) + IntNegOne = Int(-1) +) + +var ( + // int32WrapperType reflected type for protobuf int32 wrapper type. + int32WrapperType = reflect.TypeOf(&wrapperspb.Int32Value{}) + + // int64WrapperType reflected type for protobuf int64 wrapper type. + int64WrapperType = reflect.TypeOf(&wrapperspb.Int64Value{}) +) + +// Add implements traits.Adder.Add. +func (i Int) Add(other ref.Val) ref.Val { + otherInt, ok := other.(Int) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + val, err := addInt64Checked(int64(i), int64(otherInt)) + if err != nil { + return WrapErr(err) + } + return Int(val) +} + +// Compare implements traits.Comparer.Compare. +func (i Int) Compare(other ref.Val) ref.Val { + switch ov := other.(type) { + case Double: + if math.IsNaN(float64(ov)) { + return NewErr("NaN values cannot be ordered") + } + return compareIntDouble(i, ov) + case Int: + return compareInt(i, ov) + case Uint: + return compareIntUint(i, ov) + default: + return MaybeNoSuchOverloadErr(other) + } +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (i Int) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.Int, reflect.Int32: + // Enums are also mapped as int32 derivations. + // Note, the code doesn't convert to the enum value directly since this is not known, but + // the net effect with respect to proto-assignment is handled correctly by the reflection + // Convert method. + v, err := int64ToInt32Checked(int64(i)) + if err != nil { + return nil, err + } + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Int8: + v, err := int64ToInt8Checked(int64(i)) + if err != nil { + return nil, err + } + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Int16: + v, err := int64ToInt16Checked(int64(i)) + if err != nil { + return nil, err + } + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Int64: + return reflect.ValueOf(i).Convert(typeDesc).Interface(), nil + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Primitives must be wrapped before being set on an Any field. + return anypb.New(wrapperspb.Int64(int64(i))) + case int32WrapperType: + // Convert the value to a wrapperspb.Int32Value, error on overflow. + v, err := int64ToInt32Checked(int64(i)) + if err != nil { + return nil, err + } + return wrapperspb.Int32(v), nil + case int64WrapperType: + // Convert the value to a wrapperspb.Int64Value. + return wrapperspb.Int64(int64(i)), nil + case jsonValueType: + // The proto-to-JSON conversion rules would convert all 64-bit integer values to JSON + // decimal strings. Because CEL ints might come from the automatic widening of 32-bit + // values in protos, the JSON type is chosen dynamically based on the value. + // + // - Integers -2^53-1 < n < 2^53-1 are encoded as JSON numbers. + // - Integers outside this range are encoded as JSON strings. + // + // The integer to float range represents the largest interval where such a conversion + // can round-trip accurately. Thus, conversions from a 32-bit source can expect a JSON + // number as with protobuf. Those consuming JSON from a 64-bit source must be able to + // handle either a JSON number or a JSON decimal string. To handle these cases safely + // the string values must be explicitly converted to int() within a CEL expression; + // however, it is best to simply stay within the JSON number range when building JSON + // objects in CEL. + if i.isJSONSafe() { + return structpb.NewNumberValue(float64(i)), nil + } + // Proto3 to JSON conversion requires string-formatted int64 values + // since the conversion to floating point would result in truncation. + return structpb.NewStringValue(strconv.FormatInt(int64(i), 10)), nil + } + switch typeDesc.Elem().Kind() { + case reflect.Int32: + // Convert the value to a wrapperspb.Int32Value, error on overflow. + v, err := int64ToInt32Checked(int64(i)) + if err != nil { + return nil, err + } + p := reflect.New(typeDesc.Elem()) + p.Elem().Set(reflect.ValueOf(v).Convert(typeDesc.Elem())) + return p.Interface(), nil + case reflect.Int64: + v := int64(i) + p := reflect.New(typeDesc.Elem()) + p.Elem().Set(reflect.ValueOf(v).Convert(typeDesc.Elem())) + return p.Interface(), nil + } + case reflect.Interface: + iv := i.Value() + if reflect.TypeOf(iv).Implements(typeDesc) { + return iv, nil + } + if reflect.TypeOf(i).Implements(typeDesc) { + return i, nil + } + } + return nil, fmt.Errorf("unsupported type conversion from 'int' to %v", typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (i Int) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case IntType: + return i + case UintType: + u, err := int64ToUint64Checked(int64(i)) + if err != nil { + return WrapErr(err) + } + return Uint(u) + case DoubleType: + return Double(i) + case StringType: + return String(fmt.Sprintf("%d", int64(i))) + case TimestampType: + // The maximum positive value that can be passed to time.Unix is math.MaxInt64 minus the number + // of seconds between year 1 and year 1970. See comments on unixToInternal. + if int64(i) < minUnixTime || int64(i) > maxUnixTime { + return celErrTimestampOverflow + } + return timestampOf(time.Unix(int64(i), 0).UTC()) + case TypeType: + return IntType + } + return NewErr("type conversion error from '%s' to '%s'", IntType, typeVal) +} + +// Divide implements traits.Divider.Divide. +func (i Int) Divide(other ref.Val) ref.Val { + otherInt, ok := other.(Int) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + val, err := divideInt64Checked(int64(i), int64(otherInt)) + if err != nil { + return WrapErr(err) + } + return Int(val) +} + +// Equal implements ref.Val.Equal. +func (i Int) Equal(other ref.Val) ref.Val { + switch ov := other.(type) { + case Double: + if math.IsNaN(float64(ov)) { + return False + } + return Bool(compareIntDouble(i, ov) == 0) + case Int: + return Bool(i == ov) + case Uint: + return Bool(compareIntUint(i, ov) == 0) + default: + return False + } +} + +// IsZeroValue returns true if integer is equal to 0 +func (i Int) IsZeroValue() bool { + return i == IntZero +} + +// Modulo implements traits.Modder.Modulo. +func (i Int) Modulo(other ref.Val) ref.Val { + otherInt, ok := other.(Int) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + val, err := moduloInt64Checked(int64(i), int64(otherInt)) + if err != nil { + return WrapErr(err) + } + return Int(val) +} + +// Multiply implements traits.Multiplier.Multiply. +func (i Int) Multiply(other ref.Val) ref.Val { + otherInt, ok := other.(Int) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + val, err := multiplyInt64Checked(int64(i), int64(otherInt)) + if err != nil { + return WrapErr(err) + } + return Int(val) +} + +// Negate implements traits.Negater.Negate. +func (i Int) Negate() ref.Val { + val, err := negateInt64Checked(int64(i)) + if err != nil { + return WrapErr(err) + } + return Int(val) +} + +// Subtract implements traits.Subtractor.Subtract. +func (i Int) Subtract(subtrahend ref.Val) ref.Val { + subtraInt, ok := subtrahend.(Int) + if !ok { + return MaybeNoSuchOverloadErr(subtrahend) + } + val, err := subtractInt64Checked(int64(i), int64(subtraInt)) + if err != nil { + return WrapErr(err) + } + return Int(val) +} + +// Type implements ref.Val.Type. +func (i Int) Type() ref.Type { + return IntType +} + +// Value implements ref.Val.Value. +func (i Int) Value() any { + return int64(i) +} + +func (i Int) format(sb *strings.Builder) { + sb.WriteString(strconv.FormatInt(int64(i), 10)) +} + +// isJSONSafe indicates whether the int is safely representable as a floating point value in JSON. +func (i Int) isJSONSafe() bool { + return i >= minIntJSON && i <= maxIntJSON +} + +const ( + // maxIntJSON is defined as the Number.MAX_SAFE_INTEGER value per EcmaScript 6. + maxIntJSON = 1<<53 - 1 + // minIntJSON is defined as the Number.MIN_SAFE_INTEGER value per EcmaScript 6. + minIntJSON = -maxIntJSON +) diff --git a/vendor/github.com/google/cel-go/common/types/iterator.go b/vendor/github.com/google/cel-go/common/types/iterator.go new file mode 100644 index 0000000000..98e9147b6e --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/iterator.go @@ -0,0 +1,55 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +var ( + // IteratorType singleton. + IteratorType = NewObjectType("iterator", traits.IteratorType) +) + +// baseIterator is the basis for list, map, and object iterators. +// +// An iterator in and of itself should not be a valid value for comparison, but must implement the +// `ref.Val` methods in order to be well-supported within instruction arguments processed by the +// interpreter. +type baseIterator struct{} + +func (*baseIterator) ConvertToNative(typeDesc reflect.Type) (any, error) { + return nil, fmt.Errorf("type conversion on iterators not supported") +} + +func (*baseIterator) ConvertToType(typeVal ref.Type) ref.Val { + return NewErr("no such overload") +} + +func (*baseIterator) Equal(other ref.Val) ref.Val { + return NewErr("no such overload") +} + +func (*baseIterator) Type() ref.Type { + return IteratorType +} + +func (*baseIterator) Value() any { + return nil +} diff --git a/vendor/github.com/google/cel-go/common/types/json_value.go b/vendor/github.com/google/cel-go/common/types/json_value.go new file mode 100644 index 0000000000..13a4efe7ad --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/json_value.go @@ -0,0 +1,29 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "reflect" + + structpb "google.golang.org/protobuf/types/known/structpb" +) + +// JSON type constants representing the reflected types of protobuf JSON values. +var ( + jsonValueType = reflect.TypeOf(&structpb.Value{}) + jsonListValueType = reflect.TypeOf(&structpb.ListValue{}) + jsonStructType = reflect.TypeOf(&structpb.Struct{}) + jsonNullType = reflect.TypeOf(structpb.NullValue_NULL_VALUE) +) diff --git a/vendor/github.com/google/cel-go/common/types/list.go b/vendor/github.com/google/cel-go/common/types/list.go new file mode 100644 index 0000000000..8c023f8910 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/list.go @@ -0,0 +1,590 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "strings" + + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +// NewDynamicList returns a traits.Lister with heterogenous elements. +// value should be an array of "native" types, i.e. any type that +// NativeToValue() can convert to a ref.Val. +func NewDynamicList(adapter Adapter, value any) traits.Lister { + refValue := reflect.ValueOf(value) + return &baseList{ + Adapter: adapter, + value: value, + size: refValue.Len(), + get: func(i int) any { + return refValue.Index(i).Interface() + }, + } +} + +// NewStringList returns a traits.Lister containing only strings. +func NewStringList(adapter Adapter, elems []string) traits.Lister { + return &baseList{ + Adapter: adapter, + value: elems, + size: len(elems), + get: func(i int) any { return elems[i] }, + } +} + +// NewRefValList returns a traits.Lister with ref.Val elements. +// +// This type specialization is used with list literals within CEL expressions. +func NewRefValList(adapter Adapter, elems []ref.Val) traits.Lister { + return &baseList{ + Adapter: adapter, + value: elems, + size: len(elems), + get: func(i int) any { return elems[i] }, + } +} + +// NewProtoList returns a traits.Lister based on a pb.List instance. +func NewProtoList(adapter Adapter, list protoreflect.List) traits.Lister { + return &baseList{ + Adapter: adapter, + value: list, + size: list.Len(), + get: func(i int) any { return list.Get(i).Interface() }, + } +} + +// NewJSONList returns a traits.Lister based on structpb.ListValue instance. +func NewJSONList(adapter Adapter, l *structpb.ListValue) traits.Lister { + vals := l.GetValues() + return &baseList{ + Adapter: adapter, + value: l, + size: len(vals), + get: func(i int) any { return vals[i] }, + } +} + +// NewMutableList creates a new mutable list whose internal state can be modified. +func NewMutableList(adapter Adapter) traits.MutableLister { + var mutableValues []ref.Val + l := &mutableList{ + baseList: &baseList{ + Adapter: adapter, + value: mutableValues, + size: 0, + }, + mutableValues: mutableValues, + } + l.get = func(i int) any { + return l.mutableValues[i] + } + return l +} + +// baseList points to a list containing elements of any type. +// The `value` is an array of native values, and refValue is its reflection object. +// The `Adapter` enables native type to CEL type conversions. +type baseList struct { + Adapter + value any + + // size indicates the number of elements within the list. + // Since objects are immutable the size of a list is static. + size int + + // get returns a value at the specified integer index. + // The index is guaranteed to be checked against the list index range. + get func(int) any +} + +// Add implements the traits.Adder interface method. +func (l *baseList) Add(other ref.Val) ref.Val { + otherList, ok := other.(traits.Lister) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + if l.Size() == IntZero { + return other + } + if otherList.Size() == IntZero { + return l + } + return &concatList{ + Adapter: l.Adapter, + prevList: l, + nextList: otherList} +} + +// Contains implements the traits.Container interface method. +func (l *baseList) Contains(elem ref.Val) ref.Val { + for i := 0; i < l.size; i++ { + val := l.NativeToValue(l.get(i)) + cmp := elem.Equal(val) + b, ok := cmp.(Bool) + if ok && b == True { + return True + } + } + return False +} + +// ConvertToNative implements the ref.Val interface method. +func (l *baseList) ConvertToNative(typeDesc reflect.Type) (any, error) { + // If the underlying list value is assignable to the reflected type return it. + if reflect.TypeOf(l.value).AssignableTo(typeDesc) { + return l.value, nil + } + // If the list wrapper is assignable to the desired type return it. + if reflect.TypeOf(l).AssignableTo(typeDesc) { + return l, nil + } + // Attempt to convert the list to a set of well known protobuf types. + switch typeDesc { + case anyValueType: + json, err := l.ConvertToNative(jsonListValueType) + if err != nil { + return nil, err + } + return anypb.New(json.(proto.Message)) + case jsonValueType, jsonListValueType: + jsonValues, err := + l.ConvertToNative(reflect.TypeOf([]*structpb.Value{})) + if err != nil { + return nil, err + } + jsonList := &structpb.ListValue{Values: jsonValues.([]*structpb.Value)} + if typeDesc == jsonListValueType { + return jsonList, nil + } + return structpb.NewListValue(jsonList), nil + } + // Non-list conversion. + if typeDesc.Kind() != reflect.Slice && typeDesc.Kind() != reflect.Array { + return nil, fmt.Errorf("type conversion error from list to '%v'", typeDesc) + } + + // List conversion. + // Allow the element ConvertToNative() function to determine whether conversion is possible. + otherElemType := typeDesc.Elem() + elemCount := l.size + var nativeList reflect.Value + if typeDesc.Kind() == reflect.Array { + nativeList = reflect.New(reflect.ArrayOf(elemCount, typeDesc)).Elem().Index(0) + } else { + nativeList = reflect.MakeSlice(typeDesc, elemCount, elemCount) + + } + for i := 0; i < elemCount; i++ { + elem := l.NativeToValue(l.get(i)) + nativeElemVal, err := elem.ConvertToNative(otherElemType) + if err != nil { + return nil, err + } + nativeList.Index(i).Set(reflect.ValueOf(nativeElemVal)) + } + return nativeList.Interface(), nil +} + +// ConvertToType implements the ref.Val interface method. +func (l *baseList) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case ListType: + return l + case TypeType: + return ListType + } + return NewErr("type conversion error from '%s' to '%s'", ListType, typeVal) +} + +// Equal implements the ref.Val interface method. +func (l *baseList) Equal(other ref.Val) ref.Val { + otherList, ok := other.(traits.Lister) + if !ok { + return False + } + if l.Size() != otherList.Size() { + return False + } + for i := IntZero; i < l.Size().(Int); i++ { + thisElem := l.Get(i) + otherElem := otherList.Get(i) + elemEq := Equal(thisElem, otherElem) + if elemEq == False { + return False + } + } + return True +} + +// Get implements the traits.Indexer interface method. +func (l *baseList) Get(index ref.Val) ref.Val { + ind, err := IndexOrError(index) + if err != nil { + return ValOrErr(index, "%v", err) + } + if ind < 0 || ind >= l.size { + return NewErr("index '%d' out of range in list size '%d'", ind, l.Size()) + } + return l.NativeToValue(l.get(ind)) +} + +// IsZeroValue returns true if the list is empty. +func (l *baseList) IsZeroValue() bool { + return l.size == 0 +} + +// Fold calls the FoldEntry method for each (index, value) pair in the list. +func (l *baseList) Fold(f traits.Folder) { + for i := 0; i < l.size; i++ { + if !f.FoldEntry(i, l.get(i)) { + break + } + } +} + +// Iterator implements the traits.Iterable interface method. +func (l *baseList) Iterator() traits.Iterator { + return newListIterator(l) +} + +// Size implements the traits.Sizer interface method. +func (l *baseList) Size() ref.Val { + return Int(l.size) +} + +// Type implements the ref.Val interface method. +func (l *baseList) Type() ref.Type { + return ListType +} + +// Value implements the ref.Val interface method. +func (l *baseList) Value() any { + return l.value +} + +// String converts the list to a human readable string form. +func (l *baseList) String() string { + var sb strings.Builder + sb.WriteString("[") + for i := 0; i < l.size; i++ { + sb.WriteString(fmt.Sprintf("%v", l.get(i))) + if i != l.size-1 { + sb.WriteString(", ") + } + } + sb.WriteString("]") + return sb.String() +} + +func formatList(l traits.Lister, sb *strings.Builder) { + sb.WriteString("[") + n, _ := l.Size().(Int) + for i := 0; i < int(n); i++ { + formatTo(sb, l.Get(Int(i))) + if i != int(n)-1 { + sb.WriteString(", ") + } + } + sb.WriteString("]") +} + +func (l *baseList) format(sb *strings.Builder) { + formatList(l, sb) +} + +// mutableList aggregates values into its internal storage. For use with internal CEL variables only. +type mutableList struct { + *baseList + mutableValues []ref.Val +} + +// Add copies elements from the other list into the internal storage of the mutable list. +// The ref.Val returned by Add is the receiver. +func (l *mutableList) Add(other ref.Val) ref.Val { + switch otherList := other.(type) { + case *mutableList: + l.mutableValues = append(l.mutableValues, otherList.mutableValues...) + l.size += len(otherList.mutableValues) + case traits.Lister: + for i := IntZero; i < otherList.Size().(Int); i++ { + l.size++ + l.mutableValues = append(l.mutableValues, otherList.Get(i)) + } + default: + return MaybeNoSuchOverloadErr(otherList) + } + return l +} + +// ToImmutableList returns an immutable list based on the internal storage of the mutable list. +func (l *mutableList) ToImmutableList() traits.Lister { + // The reference to internal state is guaranteed to be safe as this call is only performed + // when mutations have been completed. + return NewRefValList(l.Adapter, l.mutableValues) +} + +// concatList combines two list implementations together into a view. +// The `Adapter` enables native type to CEL type conversions. +type concatList struct { + Adapter + value any + prevList traits.Lister + nextList traits.Lister +} + +// Add implements the traits.Adder interface method. +func (l *concatList) Add(other ref.Val) ref.Val { + otherList, ok := other.(traits.Lister) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + if l.Size() == IntZero { + return other + } + if otherList.Size() == IntZero { + return l + } + return &concatList{ + Adapter: l.Adapter, + prevList: l, + nextList: otherList} +} + +// Contains implements the traits.Container interface method. +func (l *concatList) Contains(elem ref.Val) ref.Val { + // The concat list relies on the IsErrorOrUnknown checks against the input element to be + // performed by the `prevList` and/or `nextList`. + prev := l.prevList.Contains(elem) + // Short-circuit the return if the elem was found in the prev list. + if prev == True { + return prev + } + // Return if the elem was found in the next list. + next := l.nextList.Contains(elem) + if next == True { + return next + } + // Handle the case where an error or unknown was encountered before checking next. + if IsUnknownOrError(prev) { + return prev + } + // Otherwise, rely on the next value as the representative result. + return next +} + +// ConvertToNative implements the ref.Val interface method. +func (l *concatList) ConvertToNative(typeDesc reflect.Type) (any, error) { + combined := NewDynamicList(l.Adapter, l.Value().([]any)) + return combined.ConvertToNative(typeDesc) +} + +// ConvertToType implements the ref.Val interface method. +func (l *concatList) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case ListType: + return l + case TypeType: + return ListType + } + return NewErr("type conversion error from '%s' to '%s'", ListType, typeVal) +} + +// Equal implements the ref.Val interface method. +func (l *concatList) Equal(other ref.Val) ref.Val { + otherList, ok := other.(traits.Lister) + if !ok { + return False + } + if l.Size() != otherList.Size() { + return False + } + var maybeErr ref.Val + for i := IntZero; i < l.Size().(Int); i++ { + thisElem := l.Get(i) + otherElem := otherList.Get(i) + elemEq := Equal(thisElem, otherElem) + if elemEq == False { + return False + } + if maybeErr == nil && IsUnknownOrError(elemEq) { + maybeErr = elemEq + } + } + if maybeErr != nil { + return maybeErr + } + return True +} + +// Get implements the traits.Indexer interface method. +func (l *concatList) Get(index ref.Val) ref.Val { + ind, err := IndexOrError(index) + if err != nil { + return ValOrErr(index, "%v", err) + } + i := Int(ind) + if i < l.prevList.Size().(Int) { + return l.prevList.Get(i) + } + offset := i - l.prevList.Size().(Int) + return l.nextList.Get(offset) +} + +// IsZeroValue returns true if the list is empty. +func (l *concatList) IsZeroValue() bool { + return l.Size().(Int) == 0 +} + +// Fold calls the FoldEntry method for each (index, value) pair in the list. +func (l *concatList) Fold(f traits.Folder) { + for i := Int(0); i < l.Size().(Int); i++ { + if !f.FoldEntry(i, l.Get(i)) { + break + } + } +} + +// Iterator implements the traits.Iterable interface method. +func (l *concatList) Iterator() traits.Iterator { + return newListIterator(l) +} + +// Size implements the traits.Sizer interface method. +func (l *concatList) Size() ref.Val { + return l.prevList.Size().(Int).Add(l.nextList.Size()) +} + +// String converts the concatenated list to a human-readable string. +func (l *concatList) String() string { + var sb strings.Builder + sb.WriteString("[") + for i := Int(0); i < l.Size().(Int); i++ { + sb.WriteString(fmt.Sprintf("%v", l.Get(i))) + if i != l.Size().(Int)-1 { + sb.WriteString(", ") + } + } + sb.WriteString("]") + return sb.String() +} + +// Type implements the ref.Val interface method. +func (l *concatList) Type() ref.Type { + return ListType +} + +// Value implements the ref.Val interface method. +func (l *concatList) Value() any { + if l.value == nil { + merged := make([]any, l.Size().(Int)) + prevLen := l.prevList.Size().(Int) + for i := Int(0); i < prevLen; i++ { + merged[i] = l.prevList.Get(i).Value() + } + nextLen := l.nextList.Size().(Int) + for j := Int(0); j < nextLen; j++ { + merged[prevLen+j] = l.nextList.Get(j).Value() + } + l.value = merged + } + return l.value +} + +func newListIterator(listValue traits.Lister) traits.Iterator { + return &listIterator{ + listValue: listValue, + len: listValue.Size().(Int), + } +} + +type listIterator struct { + *baseIterator + listValue traits.Lister + cursor Int + len Int +} + +// HasNext implements the traits.Iterator interface method. +func (it *listIterator) HasNext() ref.Val { + return Bool(it.cursor < it.len) +} + +// Next implements the traits.Iterator interface method. +func (it *listIterator) Next() ref.Val { + if it.HasNext() == True { + index := it.cursor + it.cursor++ + return it.listValue.Get(index) + } + return nil +} + +// IndexOrError converts an input index value into either a lossless integer index or an error. +func IndexOrError(index ref.Val) (int, error) { + switch iv := index.(type) { + case Int: + return int(iv), nil + case Double: + if ik, ok := doubleToInt64Lossless(float64(iv)); ok { + return int(ik), nil + } + return -1, fmt.Errorf("unsupported index value %v in list", index) + case Uint: + if ik, ok := uint64ToInt64Lossless(uint64(iv)); ok { + return int(ik), nil + } + return -1, fmt.Errorf("unsupported index value %v in list", index) + default: + return -1, fmt.Errorf("unsupported index type '%s' in list", index.Type()) + } +} + +// ToFoldableList will create a Foldable version of a list suitable for key-value pair iteration. +// +// For values which are already Foldable, this call is a no-op. For all other values, the fold is +// driven via the Size() and Get() calls which means that the folding will function, but take a +// performance hit. +func ToFoldableList(l traits.Lister) traits.Foldable { + if f, ok := l.(traits.Foldable); ok { + return f + } + return interopFoldableList{Lister: l} +} + +type interopFoldableList struct { + traits.Lister +} + +// Fold implements the traits.Foldable interface method and performs an iteration over the +// range of elements of the list. +func (l interopFoldableList) Fold(f traits.Folder) { + sz := l.Size().(Int) + for i := Int(0); i < sz; i++ { + if !f.FoldEntry(i, l.Get(i)) { + break + } + } +} diff --git a/vendor/github.com/google/cel-go/common/types/map.go b/vendor/github.com/google/cel-go/common/types/map.go new file mode 100644 index 0000000000..b33096197c --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/map.go @@ -0,0 +1,1038 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "sort" + "strings" + + "github.com/stoewer/go-strcase" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + "github.com/google/cel-go/common/types/pb" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +// NewDynamicMap returns a traits.Mapper value with dynamic key, value pairs. +func NewDynamicMap(adapter Adapter, value any) traits.Mapper { + refValue := reflect.ValueOf(value) + return &baseMap{ + Adapter: adapter, + mapAccessor: newReflectMapAccessor(adapter, refValue), + value: value, + size: refValue.Len(), + } +} + +// NewJSONStruct creates a traits.Mapper implementation backed by a JSON struct that has been +// encoded in protocol buffer form. +// +// The `adapter` argument provides type adaptation capabilities from proto to CEL. +func NewJSONStruct(adapter Adapter, value *structpb.Struct) traits.Mapper { + fields := value.GetFields() + return &baseMap{ + Adapter: adapter, + mapAccessor: newJSONStructAccessor(adapter, fields), + value: value, + size: len(fields), + } +} + +// NewRefValMap returns a specialized traits.Mapper with CEL valued keys and values. +func NewRefValMap(adapter Adapter, value map[ref.Val]ref.Val) traits.Mapper { + return &baseMap{ + Adapter: adapter, + mapAccessor: newRefValMapAccessor(value), + value: value, + size: len(value), + } +} + +// NewStringInterfaceMap returns a specialized traits.Mapper with string keys and interface values. +func NewStringInterfaceMap(adapter Adapter, value map[string]any) traits.Mapper { + return &baseMap{ + Adapter: adapter, + mapAccessor: newStringIfaceMapAccessor(adapter, value), + value: value, + size: len(value), + } +} + +// NewStringStringMap returns a specialized traits.Mapper with string keys and values. +func NewStringStringMap(adapter Adapter, value map[string]string) traits.Mapper { + return &baseMap{ + Adapter: adapter, + mapAccessor: newStringMapAccessor(value), + value: value, + size: len(value), + } +} + +// NewProtoMap returns a specialized traits.Mapper for handling protobuf map values. +func NewProtoMap(adapter Adapter, value *pb.Map) traits.Mapper { + return &protoMap{ + Adapter: adapter, + value: value, + } +} + +// NewMutableMap constructs a mutable map from an adapter and a set of map values. +func NewMutableMap(adapter Adapter, mutableValues map[ref.Val]ref.Val) traits.MutableMapper { + mutableCopy := make(map[ref.Val]ref.Val, len(mutableValues)) + for k, v := range mutableValues { + mutableCopy[k] = v + } + m := &mutableMap{ + baseMap: &baseMap{ + Adapter: adapter, + mapAccessor: newRefValMapAccessor(mutableCopy), + value: mutableCopy, + size: len(mutableCopy), + }, + mutableValues: mutableCopy, + } + return m +} + +// mapAccessor is a private interface for finding values within a map and iterating over the keys. +// This interface implements portions of the API surface area required by the traits.Mapper +// interface. +type mapAccessor interface { + // Find returns a value, if one exists, for the input key. + // + // If the key is not found the function returns (nil, false). + Find(ref.Val) (ref.Val, bool) + + // Iterator returns an Iterator over the map key set. + Iterator() traits.Iterator + + // Fold calls the FoldEntry method for each (key, value) pair in the map. + Fold(traits.Folder) +} + +// baseMap is a reflection based map implementation designed to handle a variety of map-like types. +// +// Since CEL is side-effect free, the base map represents an immutable object. +type baseMap struct { + // TypeAdapter used to convert keys and values accessed within the map. + Adapter + + // mapAccessor interface implementation used to find and iterate over map keys. + mapAccessor + + // value is the native Go value upon which the map type operators. + value any + + // size is the number of entries in the map. + size int +} + +// Contains implements the traits.Container interface method. +func (m *baseMap) Contains(index ref.Val) ref.Val { + _, found := m.Find(index) + return Bool(found) +} + +// ConvertToNative implements the ref.Val interface method. +func (m *baseMap) ConvertToNative(typeDesc reflect.Type) (any, error) { + // If the map is already assignable to the desired type return it, e.g. interfaces and + // maps with the same key value types. + if reflect.TypeOf(m.value).AssignableTo(typeDesc) { + return m.value, nil + } + if reflect.TypeOf(m).AssignableTo(typeDesc) { + return m, nil + } + switch typeDesc { + case anyValueType: + json, err := m.ConvertToNative(jsonStructType) + if err != nil { + return nil, err + } + return anypb.New(json.(proto.Message)) + case jsonValueType, jsonStructType: + jsonEntries, err := + m.ConvertToNative(reflect.TypeOf(map[string]*structpb.Value{})) + if err != nil { + return nil, err + } + jsonMap := &structpb.Struct{Fields: jsonEntries.(map[string]*structpb.Value)} + if typeDesc == jsonStructType { + return jsonMap, nil + } + return structpb.NewStructValue(jsonMap), nil + } + + // Unwrap pointers, but track their use. + isPtr := false + if typeDesc.Kind() == reflect.Ptr { + tk := typeDesc + typeDesc = typeDesc.Elem() + if typeDesc.Kind() == reflect.Ptr { + return nil, fmt.Errorf("unsupported type conversion to '%v'", tk) + } + isPtr = true + } + switch typeDesc.Kind() { + // Map conversion. + case reflect.Map: + otherKey := typeDesc.Key() + otherElem := typeDesc.Elem() + nativeMap := reflect.MakeMapWithSize(typeDesc, m.size) + it := m.Iterator() + for it.HasNext() == True { + key := it.Next() + refKeyValue, err := key.ConvertToNative(otherKey) + if err != nil { + return nil, err + } + refElemValue, err := m.Get(key).ConvertToNative(otherElem) + if err != nil { + return nil, err + } + nativeMap.SetMapIndex(reflect.ValueOf(refKeyValue), reflect.ValueOf(refElemValue)) + } + return nativeMap.Interface(), nil + case reflect.Struct: + nativeStructPtr := reflect.New(typeDesc) + nativeStruct := nativeStructPtr.Elem() + it := m.Iterator() + for it.HasNext() == True { + key := it.Next() + // Ensure the field name being referenced is exported. + // Only exported (public) field names can be set by reflection, where the name + // must be at least one character in length and start with an upper-case letter. + fieldName := key.ConvertToType(StringType) + if IsError(fieldName) { + return nil, fieldName.(*Err) + } + name := string(fieldName.(String)) + name = strcase.UpperCamelCase(name) + fieldRef := nativeStruct.FieldByName(name) + if !fieldRef.IsValid() { + return nil, fmt.Errorf("type conversion error, no such field '%s' in type '%v'", name, typeDesc) + } + fieldValue, err := m.Get(key).ConvertToNative(fieldRef.Type()) + if err != nil { + return nil, err + } + fieldRef.Set(reflect.ValueOf(fieldValue)) + } + if isPtr { + return nativeStructPtr.Interface(), nil + } + return nativeStruct.Interface(), nil + } + return nil, fmt.Errorf("type conversion error from map to '%v'", typeDesc) +} + +// ConvertToType implements the ref.Val interface method. +func (m *baseMap) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case MapType: + return m + case TypeType: + return MapType + } + return NewErr("type conversion error from '%s' to '%s'", MapType, typeVal) +} + +// Equal implements the ref.Val interface method. +func (m *baseMap) Equal(other ref.Val) ref.Val { + otherMap, ok := other.(traits.Mapper) + if !ok { + return False + } + if m.Size() != otherMap.Size() { + return False + } + it := m.Iterator() + for it.HasNext() == True { + key := it.Next() + thisVal, _ := m.Find(key) + otherVal, found := otherMap.Find(key) + if !found { + return False + } + valEq := Equal(thisVal, otherVal) + if valEq == False { + return False + } + } + return True +} + +// Get implements the traits.Indexer interface method. +func (m *baseMap) Get(key ref.Val) ref.Val { + v, found := m.Find(key) + if !found { + return ValOrErr(v, "no such key: %v", key) + } + return v +} + +// IsZeroValue returns true if the map is empty. +func (m *baseMap) IsZeroValue() bool { + return m.size == 0 +} + +// Size implements the traits.Sizer interface method. +func (m *baseMap) Size() ref.Val { + return Int(m.size) +} + +// String converts the map into a human-readable string. +func (m *baseMap) String() string { + var sb strings.Builder + sb.WriteString("{") + it := m.Iterator() + i := 0 + for it.HasNext() == True { + k := it.Next() + v, _ := m.Find(k) + sb.WriteString(fmt.Sprintf("%v: %v", k, v)) + if i != m.size-1 { + sb.WriteString(", ") + } + i++ + } + sb.WriteString("}") + return sb.String() +} + +type baseMapEntry struct { + key string + val string +} + +func formatMap(m traits.Mapper, sb *strings.Builder) { + it := m.Iterator() + var ents []baseMapEntry + if s, ok := m.Size().(Int); ok { + ents = make([]baseMapEntry, 0, int(s)) + } + for it.HasNext() == True { + k := it.Next() + v, _ := m.Find(k) + ents = append(ents, baseMapEntry{Format(k), Format(v)}) + } + sort.SliceStable(ents, func(i, j int) bool { + return ents[i].key < ents[j].key + }) + sb.WriteString("{") + for i, ent := range ents { + if i > 0 { + sb.WriteString(", ") + } + sb.WriteString(ent.key) + sb.WriteString(": ") + sb.WriteString(ent.val) + } + sb.WriteString("}") +} + +func (m *baseMap) format(sb *strings.Builder) { + formatMap(m, sb) +} + +// Type implements the ref.Val interface method. +func (m *baseMap) Type() ref.Type { + return MapType +} + +// Value implements the ref.Val interface method. +func (m *baseMap) Value() any { + return m.value +} + +// mutableMap holds onto a set of mutable values which are used for intermediate computations. +type mutableMap struct { + *baseMap + mutableValues map[ref.Val]ref.Val +} + +// Insert implements the traits.MutableMapper interface method, returning true if the key insertion +// succeeds. +func (m *mutableMap) Insert(k, v ref.Val) ref.Val { + if _, found := m.Find(k); found { + return NewErr("insert failed: key %v already exists", k) + } + m.mutableValues[k] = v + return m +} + +// ToImmutableMap implements the traits.MutableMapper interface method, converting a mutable map +// an immutable map implementation. +func (m *mutableMap) ToImmutableMap() traits.Mapper { + return NewRefValMap(m.Adapter, m.mutableValues) +} + +func newJSONStructAccessor(adapter Adapter, st map[string]*structpb.Value) mapAccessor { + return &jsonStructAccessor{ + Adapter: adapter, + st: st, + } +} + +type jsonStructAccessor struct { + Adapter + st map[string]*structpb.Value +} + +// Find searches the json struct field map for the input key value and returns (value, true) if +// found. +// +// If the key is not found the function returns (nil, false). +func (a *jsonStructAccessor) Find(key ref.Val) (ref.Val, bool) { + strKey, ok := key.(String) + if !ok { + return nil, false + } + keyVal, found := a.st[string(strKey)] + if !found { + return nil, false + } + return a.NativeToValue(keyVal), true +} + +// Iterator creates a new traits.Iterator from the set of JSON struct field names. +func (a *jsonStructAccessor) Iterator() traits.Iterator { + // Copy the keys to make their order stable. + mapKeys := make([]string, len(a.st)) + i := 0 + for k := range a.st { + mapKeys[i] = k + i++ + } + return &stringKeyIterator{ + mapKeys: mapKeys, + len: len(mapKeys), + } +} + +// Fold calls the FoldEntry method for each (key, value) pair in the map. +func (a *jsonStructAccessor) Fold(f traits.Folder) { + for k, v := range a.st { + if !f.FoldEntry(k, v) { + break + } + } +} + +func newReflectMapAccessor(adapter Adapter, value reflect.Value) mapAccessor { + keyType := value.Type().Key() + return &reflectMapAccessor{ + Adapter: adapter, + refValue: value, + keyType: keyType, + } +} + +type reflectMapAccessor struct { + Adapter + refValue reflect.Value + keyType reflect.Type +} + +// Find converts the input key to a native Golang type and then uses reflection to find the key, +// returning (value, true) if present. +// +// If the key is not found the function returns (nil, false). +func (m *reflectMapAccessor) Find(key ref.Val) (ref.Val, bool) { + if m.refValue.Len() == 0 { + return nil, false + } + if keyVal, found := m.findInternal(key); found { + return keyVal, true + } + switch k := key.(type) { + // Double is not a valid proto map key type, so check for the key as an int or uint. + case Double: + if ik, ok := doubleToInt64Lossless(float64(k)); ok { + if keyVal, found := m.findInternal(Int(ik)); found { + return keyVal, true + } + } + if uk, ok := doubleToUint64Lossless(float64(k)); ok { + return m.findInternal(Uint(uk)) + } + // map keys of type double are not supported. + case Int: + if uk, ok := int64ToUint64Lossless(int64(k)); ok { + return m.findInternal(Uint(uk)) + } + case Uint: + if ik, ok := uint64ToInt64Lossless(uint64(k)); ok { + return m.findInternal(Int(ik)) + } + } + return nil, false +} + +// findInternal attempts to convert the incoming key to the map's internal native type +// and then returns the value, if found. +func (m *reflectMapAccessor) findInternal(key ref.Val) (ref.Val, bool) { + k, err := key.ConvertToNative(m.keyType) + if err != nil { + return nil, false + } + refKey := reflect.ValueOf(k) + val := m.refValue.MapIndex(refKey) + if val.IsValid() { + return m.NativeToValue(val.Interface()), true + } + return nil, false +} + +// Iterator creates a Golang reflection based traits.Iterator. +func (m *reflectMapAccessor) Iterator() traits.Iterator { + return &mapIterator{ + Adapter: m.Adapter, + mapKeys: m.refValue.MapRange(), + len: m.refValue.Len(), + } +} + +// Fold calls the FoldEntry method for each (key, value) pair in the map. +func (m *reflectMapAccessor) Fold(f traits.Folder) { + mapRange := m.refValue.MapRange() + for mapRange.Next() { + if !f.FoldEntry(mapRange.Key().Interface(), mapRange.Value().Interface()) { + break + } + } +} + +func newRefValMapAccessor(mapVal map[ref.Val]ref.Val) mapAccessor { + return &refValMapAccessor{mapVal: mapVal} +} + +type refValMapAccessor struct { + mapVal map[ref.Val]ref.Val +} + +// Find uses native map accesses to find the key, returning (value, true) if present. +// +// If the key is not found the function returns (nil, false). +func (a *refValMapAccessor) Find(key ref.Val) (ref.Val, bool) { + if len(a.mapVal) == 0 { + return nil, false + } + if keyVal, found := a.mapVal[key]; found { + return keyVal, true + } + switch k := key.(type) { + case Double: + if ik, ok := doubleToInt64Lossless(float64(k)); ok { + if keyVal, found := a.mapVal[Int(ik)]; found { + return keyVal, found + } + } + if uk, ok := doubleToUint64Lossless(float64(k)); ok { + keyVal, found := a.mapVal[Uint(uk)] + return keyVal, found + } + // map keys of type double are not supported. + case Int: + if uk, ok := int64ToUint64Lossless(int64(k)); ok { + keyVal, found := a.mapVal[Uint(uk)] + return keyVal, found + } + case Uint: + if ik, ok := uint64ToInt64Lossless(uint64(k)); ok { + keyVal, found := a.mapVal[Int(ik)] + return keyVal, found + } + } + return nil, false +} + +// Iterator produces a new traits.Iterator which iterates over the map keys via Golang reflection. +func (a *refValMapAccessor) Iterator() traits.Iterator { + return &mapIterator{ + Adapter: DefaultTypeAdapter, + mapKeys: reflect.ValueOf(a.mapVal).MapRange(), + len: len(a.mapVal), + } +} + +// Fold calls the FoldEntry method for each (key, value) pair in the map. +func (a *refValMapAccessor) Fold(f traits.Folder) { + for k, v := range a.mapVal { + if !f.FoldEntry(k, v) { + break + } + } +} + +func newStringMapAccessor(strMap map[string]string) mapAccessor { + return &stringMapAccessor{mapVal: strMap} +} + +type stringMapAccessor struct { + mapVal map[string]string +} + +// Find uses native map accesses to find the key, returning (value, true) if present. +// +// If the key is not found the function returns (nil, false). +func (a *stringMapAccessor) Find(key ref.Val) (ref.Val, bool) { + strKey, ok := key.(String) + if !ok { + return nil, false + } + keyVal, found := a.mapVal[string(strKey)] + if !found { + return nil, false + } + return String(keyVal), true +} + +// Iterator creates a new traits.Iterator from the string key set of the map. +func (a *stringMapAccessor) Iterator() traits.Iterator { + // Copy the keys to make their order stable. + mapKeys := make([]string, len(a.mapVal)) + i := 0 + for k := range a.mapVal { + mapKeys[i] = k + i++ + } + return &stringKeyIterator{ + mapKeys: mapKeys, + len: len(mapKeys), + } +} + +// Fold calls the FoldEntry method for each (key, value) pair in the map. +func (a *stringMapAccessor) Fold(f traits.Folder) { + for k, v := range a.mapVal { + if !f.FoldEntry(k, v) { + break + } + } +} + +func newStringIfaceMapAccessor(adapter Adapter, mapVal map[string]any) mapAccessor { + return &stringIfaceMapAccessor{ + Adapter: adapter, + mapVal: mapVal, + } +} + +type stringIfaceMapAccessor struct { + Adapter + mapVal map[string]any +} + +// Find uses native map accesses to find the key, returning (value, true) if present. +// +// If the key is not found the function returns (nil, false). +func (a *stringIfaceMapAccessor) Find(key ref.Val) (ref.Val, bool) { + strKey, ok := key.(String) + if !ok { + return nil, false + } + keyVal, found := a.mapVal[string(strKey)] + if !found { + return nil, false + } + return a.NativeToValue(keyVal), true +} + +// Iterator creates a new traits.Iterator from the string key set of the map. +func (a *stringIfaceMapAccessor) Iterator() traits.Iterator { + // Copy the keys to make their order stable. + mapKeys := make([]string, len(a.mapVal)) + i := 0 + for k := range a.mapVal { + mapKeys[i] = k + i++ + } + return &stringKeyIterator{ + mapKeys: mapKeys, + len: len(mapKeys), + } +} + +// Fold calls the FoldEntry method for each (key, value) pair in the map. +func (a *stringIfaceMapAccessor) Fold(f traits.Folder) { + for k, v := range a.mapVal { + if !f.FoldEntry(k, v) { + break + } + } +} + +// protoMap is a specialized, separate implementation of the traits.Mapper interfaces tailored to +// accessing protoreflect.Map values. +type protoMap struct { + Adapter + value *pb.Map +} + +// Contains returns whether the map contains the given key. +func (m *protoMap) Contains(key ref.Val) ref.Val { + _, found := m.Find(key) + return Bool(found) +} + +// ConvertToNative implements the ref.Val interface method. +// +// Note, assignment to Golang struct types is not yet supported. +func (m *protoMap) ConvertToNative(typeDesc reflect.Type) (any, error) { + // If the map is already assignable to the desired type return it, e.g. interfaces and + // maps with the same key value types. + switch typeDesc { + case anyValueType: + json, err := m.ConvertToNative(jsonStructType) + if err != nil { + return nil, err + } + return anypb.New(json.(proto.Message)) + case jsonValueType, jsonStructType: + jsonEntries, err := + m.ConvertToNative(reflect.TypeOf(map[string]*structpb.Value{})) + if err != nil { + return nil, err + } + jsonMap := &structpb.Struct{ + Fields: jsonEntries.(map[string]*structpb.Value)} + if typeDesc == jsonStructType { + return jsonMap, nil + } + return structpb.NewStructValue(jsonMap), nil + } + switch typeDesc.Kind() { + case reflect.Struct, reflect.Ptr: + if reflect.TypeOf(m.value).AssignableTo(typeDesc) { + return m.value, nil + } + if reflect.TypeOf(m).AssignableTo(typeDesc) { + return m, nil + } + } + if typeDesc.Kind() != reflect.Map { + return nil, fmt.Errorf("unsupported type conversion: %v to map", typeDesc) + } + + keyType := m.value.KeyType.ReflectType() + valType := m.value.ValueType.ReflectType() + otherKeyType := typeDesc.Key() + otherValType := typeDesc.Elem() + mapVal := reflect.MakeMapWithSize(typeDesc, m.value.Len()) + var err error + m.value.Range(func(key protoreflect.MapKey, val protoreflect.Value) bool { + ntvKey := key.Interface() + ntvVal := val.Interface() + switch pv := ntvVal.(type) { + case protoreflect.Message: + ntvVal = pv.Interface() + } + if keyType == otherKeyType && valType == otherValType { + mapVal.SetMapIndex(reflect.ValueOf(ntvKey), reflect.ValueOf(ntvVal)) + return true + } + celKey := m.NativeToValue(ntvKey) + celVal := m.NativeToValue(ntvVal) + ntvKey, err = celKey.ConvertToNative(otherKeyType) + if err != nil { + // early terminate the range loop. + return false + } + ntvVal, err = celVal.ConvertToNative(otherValType) + if err != nil { + // early terminate the range loop. + return false + } + mapVal.SetMapIndex(reflect.ValueOf(ntvKey), reflect.ValueOf(ntvVal)) + return true + }) + if err != nil { + return nil, err + } + return mapVal.Interface(), nil +} + +// ConvertToType implements the ref.Val interface method. +func (m *protoMap) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case MapType: + return m + case TypeType: + return MapType + } + return NewErr("type conversion error from '%s' to '%s'", MapType, typeVal) +} + +// Equal implements the ref.Val interface method. +func (m *protoMap) Equal(other ref.Val) ref.Val { + otherMap, ok := other.(traits.Mapper) + if !ok { + return False + } + if m.value.Map.Len() != int(otherMap.Size().(Int)) { + return False + } + var retVal ref.Val = True + m.value.Range(func(key protoreflect.MapKey, val protoreflect.Value) bool { + keyVal := m.NativeToValue(key.Interface()) + valVal := m.NativeToValue(val) + otherVal, found := otherMap.Find(keyVal) + if !found { + retVal = False + return false + } + valEq := Equal(valVal, otherVal) + if valEq != True { + retVal = valEq + return false + } + return true + }) + return retVal +} + +// Find returns whether the protoreflect.Map contains the input key. +// +// If the key is not found the function returns (nil, false). +func (m *protoMap) Find(key ref.Val) (ref.Val, bool) { + if keyVal, found := m.findInternal(key); found { + return keyVal, true + } + switch k := key.(type) { + // Double is not a valid proto map key type, so check for the key as an int or uint. + case Double: + if ik, ok := doubleToInt64Lossless(float64(k)); ok { + if keyVal, found := m.findInternal(Int(ik)); found { + return keyVal, true + } + } + if uk, ok := doubleToUint64Lossless(float64(k)); ok { + return m.findInternal(Uint(uk)) + } + // map keys of type double are not supported. + case Int: + if uk, ok := int64ToUint64Lossless(int64(k)); ok { + return m.findInternal(Uint(uk)) + } + case Uint: + if ik, ok := uint64ToInt64Lossless(uint64(k)); ok { + return m.findInternal(Int(ik)) + } + } + return nil, false +} + +// findInternal attempts to convert the incoming key to the map's internal native type +// and then returns the value, if found. +func (m *protoMap) findInternal(key ref.Val) (ref.Val, bool) { + // Convert the input key to the expected protobuf key type. + ntvKey, err := key.ConvertToNative(m.value.KeyType.ReflectType()) + if err != nil { + return nil, false + } + // Use protoreflection to get the key value. + val := m.value.Get(protoreflect.ValueOf(ntvKey).MapKey()) + if !val.IsValid() { + return nil, false + } + // Perform nominal type unwrapping from the input value. + switch v := val.Interface().(type) { + case protoreflect.List, protoreflect.Map: + // Maps do not support list or map values + return nil, false + default: + return m.NativeToValue(v), true + } +} + +// Get implements the traits.Indexer interface method. +func (m *protoMap) Get(key ref.Val) ref.Val { + v, found := m.Find(key) + if !found { + return ValOrErr(v, "no such key: %v", key) + } + return v +} + +// IsZeroValue returns true if the map is empty. +func (m *protoMap) IsZeroValue() bool { + return m.value.Len() == 0 +} + +// Iterator implements the traits.Iterable interface method. +func (m *protoMap) Iterator() traits.Iterator { + // Copy the keys to make their order stable. + mapKeys := make([]protoreflect.MapKey, 0, m.value.Len()) + m.value.Range(func(k protoreflect.MapKey, v protoreflect.Value) bool { + mapKeys = append(mapKeys, k) + return true + }) + return &protoMapIterator{ + Adapter: m.Adapter, + mapKeys: mapKeys, + len: m.value.Len(), + } +} + +// Fold calls the FoldEntry method for each (key, value) pair in the map. +func (m *protoMap) Fold(f traits.Folder) { + m.value.Range(func(k protoreflect.MapKey, v protoreflect.Value) bool { + return f.FoldEntry(k.Interface(), v.Interface()) + }) +} + +// Size returns the number of entries in the protoreflect.Map. +func (m *protoMap) Size() ref.Val { + return Int(m.value.Len()) +} + +// Type implements the ref.Val interface method. +func (m *protoMap) Type() ref.Type { + return MapType +} + +// Value implements the ref.Val interface method. +func (m *protoMap) Value() any { + return m.value +} + +type mapIterator struct { + *baseIterator + Adapter + mapKeys *reflect.MapIter + cursor int + len int +} + +// HasNext implements the traits.Iterator interface method. +func (it *mapIterator) HasNext() ref.Val { + return Bool(it.cursor < it.len) +} + +// Next implements the traits.Iterator interface method. +func (it *mapIterator) Next() ref.Val { + if it.HasNext() == True && it.mapKeys.Next() { + it.cursor++ + refKey := it.mapKeys.Key() + return it.NativeToValue(refKey.Interface()) + } + return nil +} + +type protoMapIterator struct { + *baseIterator + Adapter + mapKeys []protoreflect.MapKey + cursor int + len int +} + +// HasNext implements the traits.Iterator interface method. +func (it *protoMapIterator) HasNext() ref.Val { + return Bool(it.cursor < it.len) +} + +// Next implements the traits.Iterator interface method. +func (it *protoMapIterator) Next() ref.Val { + if it.HasNext() == True { + index := it.cursor + it.cursor++ + refKey := it.mapKeys[index] + return it.NativeToValue(refKey.Interface()) + } + return nil +} + +type stringKeyIterator struct { + *baseIterator + mapKeys []string + cursor int + len int +} + +// HasNext implements the traits.Iterator interface method. +func (it *stringKeyIterator) HasNext() ref.Val { + return Bool(it.cursor < it.len) +} + +// Next implements the traits.Iterator interface method. +func (it *stringKeyIterator) Next() ref.Val { + if it.HasNext() == True { + index := it.cursor + it.cursor++ + return String(it.mapKeys[index]) + } + return nil +} + +// ToFoldableMap will create a Foldable version of a map suitable for key-value pair iteration. +// +// For values which are already Foldable, this call is a no-op. For all other values, the fold +// is driven via the Iterator HasNext() and Next() calls as well as the map's Get() method +// which means that the folding will function, but take a performance hit. +func ToFoldableMap(m traits.Mapper) traits.Foldable { + if f, ok := m.(traits.Foldable); ok { + return f + } + return interopFoldableMap{Mapper: m} +} + +type interopFoldableMap struct { + traits.Mapper +} + +func (m interopFoldableMap) Fold(f traits.Folder) { + it := m.Iterator() + for it.HasNext() == True { + k := it.Next() + if !f.FoldEntry(k, m.Get(k)) { + break + } + } +} + +// InsertMapKeyValue inserts a key, value pair into the target map if the target map does not +// already contain the given key. +// +// If the map is mutable, it is modified in-place per the MutableMapper contract. +// If the map is not mutable, a copy containing the new key, value pair is made. +func InsertMapKeyValue(m traits.Mapper, k, v ref.Val) ref.Val { + if mutable, ok := m.(traits.MutableMapper); ok { + return mutable.Insert(k, v) + } + + // Otherwise perform the slow version of the insertion which makes a copy of the incoming map. + if _, found := m.Find(k); !found { + size := m.Size().(Int) + copy := make(map[ref.Val]ref.Val, size+1) + copy[k] = v + it := m.Iterator() + for it.HasNext() == True { + nextK := it.Next() + nextV := m.Get(nextK) + copy[nextK] = nextV + } + return DefaultTypeAdapter.NativeToValue(copy) + } + return NewErr("insert failed: key %v already exists", k) +} diff --git a/vendor/github.com/google/cel-go/common/types/null.go b/vendor/github.com/google/cel-go/common/types/null.go new file mode 100644 index 0000000000..2c0297fe65 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/null.go @@ -0,0 +1,124 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "strings" + + "google.golang.org/protobuf/proto" + + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +// Null type implementation. +type Null structpb.NullValue + +var ( + // NullValue singleton. + NullValue = Null(structpb.NullValue_NULL_VALUE) + + // golang reflect type for Null values. + nullReflectType = reflect.TypeOf(NullValue) + + protoIfaceType = reflect.TypeOf((*proto.Message)(nil)).Elem() +) + +// ConvertToNative implements ref.Val.ConvertToNative. +func (n Null) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.Int32: + switch typeDesc { + case jsonNullType: + return structpb.NullValue_NULL_VALUE, nil + case nullReflectType: + return n, nil + } + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Convert to a JSON-null before packing to an Any field since the enum value for JSON + // null cannot be packed directly. + pb, err := n.ConvertToNative(jsonValueType) + if err != nil { + return nil, err + } + return anypb.New(pb.(proto.Message)) + case jsonValueType: + return structpb.NewNullValue(), nil + case boolWrapperType, byteWrapperType, doubleWrapperType, floatWrapperType, + int32WrapperType, int64WrapperType, stringWrapperType, uint32WrapperType, + uint64WrapperType, durationValueType, timestampValueType, protoIfaceType: + return nil, nil + case jsonListValueType, jsonStructType: + // skip handling + default: + if typeDesc.Implements(protoIfaceType) { + return nil, nil + } + } + case reflect.Interface: + nv := n.Value() + if reflect.TypeOf(nv).Implements(typeDesc) { + return nv, nil + } + if reflect.TypeOf(n).Implements(typeDesc) { + return n, nil + } + } + // If the type conversion isn't supported return an error. + return nil, fmt.Errorf("type conversion error from '%v' to '%v'", NullType, typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (n Null) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case StringType: + return String("null") + case NullType: + return n + case TypeType: + return NullType + } + return NewErr("type conversion error from '%s' to '%s'", NullType, typeVal) +} + +// Equal implements ref.Val.Equal. +func (n Null) Equal(other ref.Val) ref.Val { + return Bool(NullType == other.Type()) +} + +// IsZeroValue returns true as null always represents an absent value. +func (n Null) IsZeroValue() bool { + return true +} + +// Type implements ref.Val.Type. +func (n Null) Type() ref.Type { + return NullType +} + +// Value implements ref.Val.Value. +func (n Null) Value() any { + return structpb.NullValue_NULL_VALUE +} + +func (n Null) format(sb *strings.Builder) { + sb.WriteString("null") +} diff --git a/vendor/github.com/google/cel-go/common/types/object.go b/vendor/github.com/google/cel-go/common/types/object.go new file mode 100644 index 0000000000..776f6954a9 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/object.go @@ -0,0 +1,194 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "sort" + "strings" + + "google.golang.org/protobuf/encoding/protojson" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + "github.com/google/cel-go/common/types/pb" + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +type protoObj struct { + Adapter + value proto.Message + typeDesc *pb.TypeDescription + typeValue ref.Val +} + +// NewObject returns an object based on a proto.Message value which handles +// conversion between protobuf type values and expression type values. +// Objects support indexing and iteration. +// +// Note: the type value is pulled from the list of registered types within the +// type provider. If the proto type is not registered within the type provider, +// then this will result in an error within the type adapter / provider. +func NewObject(adapter Adapter, + typeDesc *pb.TypeDescription, + typeValue ref.Val, + value proto.Message) ref.Val { + return &protoObj{ + Adapter: adapter, + value: value, + typeDesc: typeDesc, + typeValue: typeValue} +} + +func (o *protoObj) ConvertToNative(typeDesc reflect.Type) (any, error) { + srcPB := o.value + if reflect.TypeOf(srcPB).AssignableTo(typeDesc) { + return srcPB, nil + } + if reflect.TypeOf(o).AssignableTo(typeDesc) { + return o, nil + } + switch typeDesc { + case anyValueType: + _, isAny := srcPB.(*anypb.Any) + if isAny { + return srcPB, nil + } + return anypb.New(srcPB) + case jsonValueType: + // Marshal the proto to JSON first, and then rehydrate as protobuf.Value as there is no + // support for direct conversion from proto.Message to protobuf.Value. + bytes, err := protojson.Marshal(srcPB) + if err != nil { + return nil, err + } + json := &structpb.Value{} + err = protojson.Unmarshal(bytes, json) + if err != nil { + return nil, err + } + return json, nil + default: + if typeDesc == o.typeDesc.ReflectType() { + return o.value, nil + } + if typeDesc.Kind() == reflect.Ptr { + val := reflect.New(typeDesc.Elem()).Interface() + dstPB, ok := val.(proto.Message) + if ok { + err := pb.Merge(dstPB, srcPB) + if err != nil { + return nil, fmt.Errorf("type conversion error: %v", err) + } + return dstPB, nil + } + } + } + return nil, fmt.Errorf("type conversion error from '%T' to '%v'", o.value, typeDesc) +} + +func (o *protoObj) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + default: + if o.Type().TypeName() == typeVal.TypeName() { + return o + } + case TypeType: + return o.typeValue + } + return NewErr("type conversion error from '%s' to '%s'", o.typeDesc.Name(), typeVal) +} + +func (o *protoObj) Equal(other ref.Val) ref.Val { + otherPB, ok := other.Value().(proto.Message) + return Bool(ok && pb.Equal(o.value, otherPB)) +} + +// IsSet tests whether a field which is defined is set to a non-default value. +func (o *protoObj) IsSet(field ref.Val) ref.Val { + protoFieldName, ok := field.(String) + if !ok { + return MaybeNoSuchOverloadErr(field) + } + protoFieldStr := string(protoFieldName) + fd, found := o.typeDesc.FieldByName(protoFieldStr) + if !found { + return NewErr("no such field '%s'", field) + } + if fd.IsSet(o.value) { + return True + } + return False +} + +// IsZeroValue returns true if the protobuf object is empty. +func (o *protoObj) IsZeroValue() bool { + return proto.Equal(o.value, o.typeDesc.Zero()) +} + +func (o *protoObj) Get(index ref.Val) ref.Val { + protoFieldName, ok := index.(String) + if !ok { + return MaybeNoSuchOverloadErr(index) + } + protoFieldStr := string(protoFieldName) + fd, found := o.typeDesc.FieldByName(protoFieldStr) + if !found { + return NewErr("no such field '%s'", index) + } + fv, err := fd.GetFrom(o.value) + if err != nil { + return NewErrFromString(err.Error()) + } + return o.NativeToValue(fv) +} + +func (o *protoObj) Type() ref.Type { + return o.typeValue.(ref.Type) +} + +func (o *protoObj) Value() any { + return o.value +} + +type protoObjField struct { + fd protoreflect.FieldDescriptor + v protoreflect.Value +} + +func (o *protoObj) format(sb *strings.Builder) { + var fields []protoreflect.FieldDescriptor + o.value.ProtoReflect().Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool { + fields = append(fields, fd) + return true + }) + sort.SliceStable(fields, func(i, j int) bool { + return fields[i].Number() < fields[j].Number() + }) + sb.WriteString(o.Type().TypeName()) + sb.WriteString("{") + for i, field := range fields { + if i > 0 { + sb.WriteString(", ") + } + sb.WriteString(fmt.Sprintf("%s: ", field.Name())) + formatTo(sb, o.Get(String(field.Name()))) + } + sb.WriteString("}") +} diff --git a/vendor/github.com/google/cel-go/common/types/optional.go b/vendor/github.com/google/cel-go/common/types/optional.go new file mode 100644 index 0000000000..b8685ebf55 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/optional.go @@ -0,0 +1,119 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "errors" + "fmt" + "reflect" + "strings" + + "github.com/google/cel-go/common/types/ref" +) + +var ( + // OptionalType indicates the runtime type of an optional value. + OptionalType = NewOpaqueType("optional_type") + + // OptionalNone is a sentinel value which is used to indicate an empty optional value. + OptionalNone = &Optional{} +) + +// OptionalOf returns an optional value which wraps a concrete CEL value. +func OptionalOf(value ref.Val) *Optional { + return &Optional{value: value} +} + +// Optional value which points to a value if non-empty. +type Optional struct { + value ref.Val +} + +// HasValue returns true if the optional has a value. +func (o *Optional) HasValue() bool { + return o.value != nil +} + +// GetValue returns the wrapped value contained in the optional. +func (o *Optional) GetValue() ref.Val { + if !o.HasValue() { + return NewErr("optional.none() dereference") + } + return o.value +} + +// ConvertToNative implements the ref.Val interface method. +func (o *Optional) ConvertToNative(typeDesc reflect.Type) (any, error) { + if !o.HasValue() { + return nil, errors.New("optional.none() dereference") + } + return o.value.ConvertToNative(typeDesc) +} + +// ConvertToType implements the ref.Val interface method. +func (o *Optional) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case OptionalType: + return o + case TypeType: + return OptionalType + } + return NewErr("type conversion error from '%s' to '%s'", OptionalType, typeVal) +} + +// Equal determines whether the values contained by two optional values are equal. +func (o *Optional) Equal(other ref.Val) ref.Val { + otherOpt, isOpt := other.(*Optional) + if !isOpt { + return False + } + if !o.HasValue() { + return Bool(!otherOpt.HasValue()) + } + if !otherOpt.HasValue() { + return False + } + return o.value.Equal(otherOpt.value) +} + +func (o *Optional) String() string { + if o.HasValue() { + return fmt.Sprintf("optional(%v)", o.GetValue()) + } + return "optional.none()" +} + +func (o *Optional) format(sb *strings.Builder) { + if o.HasValue() { + sb.WriteString(`optional.of(`) + formatTo(sb, o.GetValue()) + sb.WriteString(`)`) + } else { + sb.WriteString("optional.none()") + } +} + +// Type implements the ref.Val interface method. +func (o *Optional) Type() ref.Type { + return OptionalType +} + +// Value returns the underlying 'Value()' of the wrapped value, if present. +func (o *Optional) Value() any { + if o.value == nil { + return nil + } + return o.value.Value() +} diff --git a/vendor/github.com/google/cel-go/common/types/overflow.go b/vendor/github.com/google/cel-go/common/types/overflow.go new file mode 100644 index 0000000000..dcb66ef596 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/overflow.go @@ -0,0 +1,429 @@ +// Copyright 2021 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "math" + "time" +) + +var ( + doubleTwoTo64 = math.Ldexp(1.0, 64) +) + +// addInt64Checked performs addition with overflow detection of two int64 values. +// +// If the operation fails the error return value will be non-nil. +func addInt64Checked(x, y int64) (int64, error) { + if (y > 0 && x > math.MaxInt64-y) || (y < 0 && x < math.MinInt64-y) { + return 0, errIntOverflow + } + return x + y, nil +} + +// subtractInt64Checked performs subtraction with overflow detection of two int64 values. +// +// If the operation fails the error return value will be non-nil. +func subtractInt64Checked(x, y int64) (int64, error) { + if (y < 0 && x > math.MaxInt64+y) || (y > 0 && x < math.MinInt64+y) { + return 0, errIntOverflow + } + return x - y, nil +} + +// negateInt64Checked performs negation with overflow detection of an int64. +// +// If the operation fails the error return value will be non-nil. +func negateInt64Checked(x int64) (int64, error) { + // In twos complement, negating MinInt64 would result in a valid of MaxInt64+1. + if x == math.MinInt64 { + return 0, errIntOverflow + } + return -x, nil +} + +// multiplyInt64Checked performs multiplication with overflow detection of two int64 value. +// +// If the operation fails the error return value will be non-nil. +func multiplyInt64Checked(x, y int64) (int64, error) { + // Detecting multiplication overflow is more complicated than the others. The first two detect + // attempting to negate MinInt64, which would result in MaxInt64+1. The other four detect normal + // overflow conditions. + if (x == -1 && y == math.MinInt64) || (y == -1 && x == math.MinInt64) || + // x is positive, y is positive + (x > 0 && y > 0 && x > math.MaxInt64/y) || + // x is positive, y is negative + (x > 0 && y < 0 && y < math.MinInt64/x) || + // x is negative, y is positive + (x < 0 && y > 0 && x < math.MinInt64/y) || + // x is negative, y is negative + (x < 0 && y < 0 && y < math.MaxInt64/x) { + return 0, errIntOverflow + } + return x * y, nil +} + +// divideInt64Checked performs division with overflow detection of two int64 values, +// as well as a division by zero check. +// +// If the operation fails the error return value will be non-nil. +func divideInt64Checked(x, y int64) (int64, error) { + // Division by zero. + if y == 0 { + return 0, errDivideByZero + } + // In twos complement, negating MinInt64 would result in a valid of MaxInt64+1. + if x == math.MinInt64 && y == -1 { + return 0, errIntOverflow + } + return x / y, nil +} + +// moduloInt64Checked performs modulo with overflow detection of two int64 values +// as well as a modulus by zero check. +// +// If the operation fails the error return value will be non-nil. +func moduloInt64Checked(x, y int64) (int64, error) { + // Modulus by zero. + if y == 0 { + return 0, errModulusByZero + } + // In twos complement, negating MinInt64 would result in a valid of MaxInt64+1. + if x == math.MinInt64 && y == -1 { + return 0, errIntOverflow + } + return x % y, nil +} + +// addUint64Checked performs addition with overflow detection of two uint64 values. +// +// If the operation fails due to overflow the error return value will be non-nil. +func addUint64Checked(x, y uint64) (uint64, error) { + if y > 0 && x > math.MaxUint64-y { + return 0, errUintOverflow + } + return x + y, nil +} + +// subtractUint64Checked performs subtraction with overflow detection of two uint64 values. +// +// If the operation fails due to overflow the error return value will be non-nil. +func subtractUint64Checked(x, y uint64) (uint64, error) { + if y > x { + return 0, errUintOverflow + } + return x - y, nil +} + +// multiplyUint64Checked performs multiplication with overflow detection of two uint64 values. +// +// If the operation fails due to overflow the error return value will be non-nil. +func multiplyUint64Checked(x, y uint64) (uint64, error) { + if y != 0 && x > math.MaxUint64/y { + return 0, errUintOverflow + } + return x * y, nil +} + +// divideUint64Checked performs division with a test for division by zero. +// +// If the operation fails the error return value will be non-nil. +func divideUint64Checked(x, y uint64) (uint64, error) { + if y == 0 { + return 0, errDivideByZero + } + return x / y, nil +} + +// moduloUint64Checked performs modulo with a test for modulus by zero. +// +// If the operation fails the error return value will be non-nil. +func moduloUint64Checked(x, y uint64) (uint64, error) { + if y == 0 { + return 0, errModulusByZero + } + return x % y, nil +} + +// addDurationChecked performs addition with overflow detection of two time.Durations. +// +// If the operation fails due to overflow the error return value will be non-nil. +func addDurationChecked(x, y time.Duration) (time.Duration, error) { + val, err := addInt64Checked(int64(x), int64(y)) + if err != nil { + return time.Duration(0), err + } + return time.Duration(val), nil +} + +// subtractDurationChecked performs subtraction with overflow detection of two time.Durations. +// +// If the operation fails due to overflow the error return value will be non-nil. +func subtractDurationChecked(x, y time.Duration) (time.Duration, error) { + val, err := subtractInt64Checked(int64(x), int64(y)) + if err != nil { + return time.Duration(0), err + } + return time.Duration(val), nil +} + +// negateDurationChecked performs negation with overflow detection of a time.Duration. +// +// If the operation fails due to overflow the error return value will be non-nil. +func negateDurationChecked(x time.Duration) (time.Duration, error) { + val, err := negateInt64Checked(int64(x)) + if err != nil { + return time.Duration(0), err + } + return time.Duration(val), nil +} + +// addDurationChecked performs addition with overflow detection of a time.Time and time.Duration. +// +// If the operation fails due to overflow the error return value will be non-nil. +func addTimeDurationChecked(x time.Time, y time.Duration) (time.Time, error) { + // This is tricky. A time is represented as (int64, int32) where the first is seconds and second + // is nanoseconds. A duration is int64 representing nanoseconds. We cannot normalize time to int64 + // as it could potentially overflow. The only way to proceed is to break time and duration into + // second and nanosecond components. + + // First we break time into its components by truncating and subtracting. + sec1 := x.Truncate(time.Second).Unix() // Truncate to seconds. + nsec1 := x.Sub(x.Truncate(time.Second)).Nanoseconds() // Get nanoseconds by truncating and subtracting. + + // Second we break duration into its components by dividing and modulo. + sec2 := int64(y) / int64(time.Second) // Truncate to seconds. + nsec2 := int64(y) % int64(time.Second) // Get remainder. + + // Add seconds first, detecting any overflow. + sec, err := addInt64Checked(sec1, sec2) + if err != nil { + return time.Time{}, err + } + // Nanoseconds cannot overflow as time.Time normalizes them to [0, 999999999]. + nsec := nsec1 + nsec2 + + // We need to normalize nanoseconds to be positive and carry extra nanoseconds to seconds. + // Adapted from time.Unix(int64, int64). + if nsec < 0 || nsec >= int64(time.Second) { + // Add seconds. + sec, err = addInt64Checked(sec, nsec/int64(time.Second)) + if err != nil { + return time.Time{}, err + } + + nsec -= (nsec / int64(time.Second)) * int64(time.Second) + if nsec < 0 { + // Subtract an extra second + sec, err = addInt64Checked(sec, -1) + if err != nil { + return time.Time{}, err + } + nsec += int64(time.Second) + } + } + + // Check if the the number of seconds from Unix epoch is within our acceptable range. + if sec < minUnixTime || sec > maxUnixTime { + return time.Time{}, errTimestampOverflow + } + + // Return resulting time and propagate time zone. + return time.Unix(sec, nsec).In(x.Location()), nil +} + +// subtractTimeChecked performs subtraction with overflow detection of two time.Time. +// +// If the operation fails due to overflow the error return value will be non-nil. +func subtractTimeChecked(x, y time.Time) (time.Duration, error) { + // Similar to addTimeDurationOverflow() above. + + // First we break time into its components by truncating and subtracting. + sec1 := x.Truncate(time.Second).Unix() // Truncate to seconds. + nsec1 := x.Sub(x.Truncate(time.Second)).Nanoseconds() // Get nanoseconds by truncating and subtracting. + + // Second we break duration into its components by truncating and subtracting. + sec2 := y.Truncate(time.Second).Unix() // Truncate to seconds. + nsec2 := y.Sub(y.Truncate(time.Second)).Nanoseconds() // Get nanoseconds by truncating and subtracting. + + // Subtract seconds first, detecting any overflow. + sec, err := subtractInt64Checked(sec1, sec2) + if err != nil { + return time.Duration(0), err + } + + // Nanoseconds cannot overflow as time.Time normalizes them to [0, 999999999]. + nsec := nsec1 - nsec2 + + // Scale seconds to nanoseconds detecting overflow. + tsec, err := multiplyInt64Checked(sec, int64(time.Second)) + if err != nil { + return time.Duration(0), err + } + + // Lastly we need to add the two nanoseconds together. + val, err := addInt64Checked(tsec, nsec) + if err != nil { + return time.Duration(0), err + } + + return time.Duration(val), nil +} + +// subtractTimeDurationChecked performs subtraction with overflow detection of a time.Time and +// time.Duration. +// +// If the operation fails due to overflow the error return value will be non-nil. +func subtractTimeDurationChecked(x time.Time, y time.Duration) (time.Time, error) { + // The easiest way to implement this is to negate y and add them. + // x - y = x + -y + val, err := negateDurationChecked(y) + if err != nil { + return time.Time{}, err + } + return addTimeDurationChecked(x, val) +} + +// doubleToInt64Checked converts a double to an int64 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func doubleToInt64Checked(v float64) (int64, error) { + if math.IsInf(v, 0) || math.IsNaN(v) || v <= float64(math.MinInt64) || v >= float64(math.MaxInt64) { + return 0, errIntOverflow + } + return int64(v), nil +} + +// doubleToInt64Checked converts a double to a uint64 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func doubleToUint64Checked(v float64) (uint64, error) { + if math.IsInf(v, 0) || math.IsNaN(v) || v < 0 || v >= doubleTwoTo64 { + return 0, errUintOverflow + } + return uint64(v), nil +} + +// int64ToUint64Checked converts an int64 to a uint64 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func int64ToUint64Checked(v int64) (uint64, error) { + if v < 0 { + return 0, errUintOverflow + } + return uint64(v), nil +} + +// int64ToInt8Checked converts an int64 to an int8 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func int64ToInt8Checked(v int64) (int8, error) { + if v < math.MinInt8 || v > math.MaxInt8 { + return 0, errIntOverflow + } + return int8(v), nil +} + +// int64ToInt16Checked converts an int64 to an int16 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func int64ToInt16Checked(v int64) (int16, error) { + if v < math.MinInt16 || v > math.MaxInt16 { + return 0, errIntOverflow + } + return int16(v), nil +} + +// int64ToInt32Checked converts an int64 to an int32 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func int64ToInt32Checked(v int64) (int32, error) { + if v < math.MinInt32 || v > math.MaxInt32 { + return 0, errIntOverflow + } + return int32(v), nil +} + +// uint64ToUint8Checked converts a uint64 to a uint8 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func uint64ToUint8Checked(v uint64) (uint8, error) { + if v > math.MaxUint8 { + return 0, errUintOverflow + } + return uint8(v), nil +} + +// uint64ToUint16Checked converts a uint64 to a uint16 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func uint64ToUint16Checked(v uint64) (uint16, error) { + if v > math.MaxUint16 { + return 0, errUintOverflow + } + return uint16(v), nil +} + +// uint64ToUint32Checked converts a uint64 to a uint32 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func uint64ToUint32Checked(v uint64) (uint32, error) { + if v > math.MaxUint32 { + return 0, errUintOverflow + } + return uint32(v), nil +} + +// uint64ToInt64Checked converts a uint64 to an int64 value. +// +// If the conversion fails due to overflow the error return value will be non-nil. +func uint64ToInt64Checked(v uint64) (int64, error) { + if v > math.MaxInt64 { + return 0, errIntOverflow + } + return int64(v), nil +} + +func doubleToUint64Lossless(v float64) (uint64, bool) { + u, err := doubleToUint64Checked(v) + if err != nil { + return 0, false + } + if float64(u) != v { + return 0, false + } + return u, true +} + +func doubleToInt64Lossless(v float64) (int64, bool) { + i, err := doubleToInt64Checked(v) + if err != nil { + return 0, false + } + if float64(i) != v { + return 0, false + } + return i, true +} + +func int64ToUint64Lossless(v int64) (uint64, bool) { + u, err := int64ToUint64Checked(v) + return u, err == nil +} + +func uint64ToInt64Lossless(v uint64) (int64, bool) { + i, err := uint64ToInt64Checked(v) + return i, err == nil +} diff --git a/vendor/github.com/google/cel-go/common/types/pb/BUILD.bazel b/vendor/github.com/google/cel-go/common/types/pb/BUILD.bazel new file mode 100644 index 0000000000..e2b9d37b56 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/BUILD.bazel @@ -0,0 +1,53 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "checked.go", + "enum.go", + "equal.go", + "file.go", + "pb.go", + "type.go", + ], + importpath = "github.com/google/cel-go/common/types/pb", + deps = [ + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//encoding/protowire:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//reflect/protoreflect:go_default_library", + "@org_golang_google_protobuf//reflect/protoregistry:go_default_library", + "@org_golang_google_protobuf//types/dynamicpb:go_default_library", + "@org_golang_google_protobuf//types/known/anypb:go_default_library", + "@org_golang_google_protobuf//types/known/durationpb:go_default_library", + "@org_golang_google_protobuf//types/known/emptypb:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + "@org_golang_google_protobuf//types/known/timestamppb:go_default_library", + "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "equal_test.go", + "file_test.go", + "pb_test.go", + "type_test.go", + ], + embed = [":go_default_library"], + deps = [ + "//checker/decls:go_default_library", + "//test/proto2pb:test_all_types_go_proto", + "//test/proto3pb:test_all_types_go_proto", + "@org_golang_google_protobuf//reflect/protodesc:go_default_library", + "@org_golang_google_protobuf//reflect/protoreflect:go_default_library", + "@org_golang_google_protobuf//types/descriptorpb:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/types/pb/checked.go b/vendor/github.com/google/cel-go/common/types/pb/checked.go new file mode 100644 index 0000000000..312a6a072f --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/checked.go @@ -0,0 +1,93 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package pb + +import ( + "google.golang.org/protobuf/reflect/protoreflect" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + emptypb "google.golang.org/protobuf/types/known/emptypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +var ( + // CheckedPrimitives map from proto field descriptor type to expr.Type. + CheckedPrimitives = map[protoreflect.Kind]*exprpb.Type{ + protoreflect.BoolKind: checkedBool, + protoreflect.BytesKind: checkedBytes, + protoreflect.DoubleKind: checkedDouble, + protoreflect.FloatKind: checkedDouble, + protoreflect.Int32Kind: checkedInt, + protoreflect.Int64Kind: checkedInt, + protoreflect.Sint32Kind: checkedInt, + protoreflect.Sint64Kind: checkedInt, + protoreflect.Uint32Kind: checkedUint, + protoreflect.Uint64Kind: checkedUint, + protoreflect.Fixed32Kind: checkedUint, + protoreflect.Fixed64Kind: checkedUint, + protoreflect.Sfixed32Kind: checkedInt, + protoreflect.Sfixed64Kind: checkedInt, + protoreflect.StringKind: checkedString} + + // CheckedWellKnowns map from qualified proto type name to expr.Type for + // well-known proto types. + CheckedWellKnowns = map[string]*exprpb.Type{ + // Wrapper types. + "google.protobuf.BoolValue": checkedWrap(checkedBool), + "google.protobuf.BytesValue": checkedWrap(checkedBytes), + "google.protobuf.DoubleValue": checkedWrap(checkedDouble), + "google.protobuf.FloatValue": checkedWrap(checkedDouble), + "google.protobuf.Int64Value": checkedWrap(checkedInt), + "google.protobuf.Int32Value": checkedWrap(checkedInt), + "google.protobuf.UInt64Value": checkedWrap(checkedUint), + "google.protobuf.UInt32Value": checkedWrap(checkedUint), + "google.protobuf.StringValue": checkedWrap(checkedString), + // Well-known types. + "google.protobuf.Any": checkedAny, + "google.protobuf.Duration": checkedDuration, + "google.protobuf.Timestamp": checkedTimestamp, + // Json types. + "google.protobuf.ListValue": checkedListDyn, + "google.protobuf.NullValue": checkedNull, + "google.protobuf.Struct": checkedMapStringDyn, + "google.protobuf.Value": checkedDyn, + } + + // common types + checkedDyn = &exprpb.Type{TypeKind: &exprpb.Type_Dyn{Dyn: &emptypb.Empty{}}} + // Wrapper and primitive types. + checkedBool = checkedPrimitive(exprpb.Type_BOOL) + checkedBytes = checkedPrimitive(exprpb.Type_BYTES) + checkedDouble = checkedPrimitive(exprpb.Type_DOUBLE) + checkedInt = checkedPrimitive(exprpb.Type_INT64) + checkedString = checkedPrimitive(exprpb.Type_STRING) + checkedUint = checkedPrimitive(exprpb.Type_UINT64) + // Well-known type equivalents. + checkedAny = checkedWellKnown(exprpb.Type_ANY) + checkedDuration = checkedWellKnown(exprpb.Type_DURATION) + checkedTimestamp = checkedWellKnown(exprpb.Type_TIMESTAMP) + // Json-based type equivalents. + checkedNull = &exprpb.Type{ + TypeKind: &exprpb.Type_Null{ + Null: structpb.NullValue_NULL_VALUE}} + checkedListDyn = &exprpb.Type{ + TypeKind: &exprpb.Type_ListType_{ + ListType: &exprpb.Type_ListType{ElemType: checkedDyn}}} + checkedMapStringDyn = &exprpb.Type{ + TypeKind: &exprpb.Type_MapType_{ + MapType: &exprpb.Type_MapType{ + KeyType: checkedString, + ValueType: checkedDyn}}} +) diff --git a/vendor/github.com/google/cel-go/common/types/pb/enum.go b/vendor/github.com/google/cel-go/common/types/pb/enum.go new file mode 100644 index 0000000000..09a1546308 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/enum.go @@ -0,0 +1,44 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package pb + +import ( + "google.golang.org/protobuf/reflect/protoreflect" +) + +// newEnumValueDescription produces an enum value description with the fully qualified enum value +// name and the enum value descriptor. +func newEnumValueDescription(name string, desc protoreflect.EnumValueDescriptor) *EnumValueDescription { + return &EnumValueDescription{ + enumValueName: name, + desc: desc, + } +} + +// EnumValueDescription maps a fully-qualified enum value name to its numeric value. +type EnumValueDescription struct { + enumValueName string + desc protoreflect.EnumValueDescriptor +} + +// Name returns the fully-qualified identifier name for the enum value. +func (ed *EnumValueDescription) Name() string { + return ed.enumValueName +} + +// Value returns the (numeric) value of the enum. +func (ed *EnumValueDescription) Value() int32 { + return int32(ed.desc.Number()) +} diff --git a/vendor/github.com/google/cel-go/common/types/pb/equal.go b/vendor/github.com/google/cel-go/common/types/pb/equal.go new file mode 100644 index 0000000000..76893d85ea --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/equal.go @@ -0,0 +1,206 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package pb + +import ( + "bytes" + "reflect" + + "google.golang.org/protobuf/encoding/protowire" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + anypb "google.golang.org/protobuf/types/known/anypb" +) + +// Equal returns whether two proto.Message instances are equal using the following criteria: +// +// - Messages must share the same instance of the type descriptor +// - Known set fields are compared using semantics equality +// - Bytes are compared using bytes.Equal +// - Scalar values are compared with operator == +// - List and map types are equal if they have the same length and all elements are equal +// - Messages are equal if they share the same descriptor and all set fields are equal +// - Unknown fields are compared using byte equality +// - NaN values are not equal to each other +// - google.protobuf.Any values are unpacked before comparison +// - If the type descriptor for a protobuf.Any cannot be found, byte equality is used rather than +// semantic equality. +// +// This method of proto equality mirrors the behavior of the C++ protobuf MessageDifferencer +// whereas the golang proto.Equal implementation mirrors the Java protobuf equals() methods +// behaviors which needed to treat NaN values as equal due to Java semantics. +func Equal(x, y proto.Message) bool { + if x == nil || y == nil { + return x == nil && y == nil + } + xRef := x.ProtoReflect() + yRef := y.ProtoReflect() + return equalMessage(xRef, yRef) +} + +func equalMessage(mx, my protoreflect.Message) bool { + // Note, the original proto.Equal upon which this implementation is based does not specifically handle the + // case when both messages are invalid. It is assumed that the descriptors will be equal and that byte-wise + // comparison will be used, though the semantics of validity are neither clear, nor promised within the + // proto.Equal implementation. + if mx.IsValid() != my.IsValid() || mx.Descriptor() != my.Descriptor() { + return false + } + + // This is an innovation on the default proto.Equal where protobuf.Any values are unpacked before comparison + // as otherwise the Any values are compared by bytes rather than structurally. + if isAny(mx) && isAny(my) { + ax := mx.Interface().(*anypb.Any) + ay := my.Interface().(*anypb.Any) + // If the values are not the same type url, return false. + if ax.GetTypeUrl() != ay.GetTypeUrl() { + return false + } + // If the values are byte equal, then return true. + if bytes.Equal(ax.GetValue(), ay.GetValue()) { + return true + } + // Otherwise fall through to the semantic comparison of the any values. + x, err := ax.UnmarshalNew() + if err != nil { + return false + } + y, err := ay.UnmarshalNew() + if err != nil { + return false + } + // Recursively compare the unwrapped messages to ensure nested Any values are unwrapped accordingly. + return equalMessage(x.ProtoReflect(), y.ProtoReflect()) + } + + // Walk the set fields to determine field-wise equality + nx := 0 + equal := true + mx.Range(func(fd protoreflect.FieldDescriptor, vx protoreflect.Value) bool { + nx++ + equal = my.Has(fd) && equalField(fd, vx, my.Get(fd)) + return equal + }) + if !equal { + return false + } + // Establish the count of set fields on message y + ny := 0 + my.Range(func(protoreflect.FieldDescriptor, protoreflect.Value) bool { + ny++ + return true + }) + // If the number of set fields is not equal return false. + if nx != ny { + return false + } + + return equalUnknown(mx.GetUnknown(), my.GetUnknown()) +} + +func equalField(fd protoreflect.FieldDescriptor, x, y protoreflect.Value) bool { + switch { + case fd.IsMap(): + return equalMap(fd, x.Map(), y.Map()) + case fd.IsList(): + return equalList(fd, x.List(), y.List()) + default: + return equalValue(fd, x, y) + } +} + +func equalMap(fd protoreflect.FieldDescriptor, x, y protoreflect.Map) bool { + if x.Len() != y.Len() { + return false + } + equal := true + x.Range(func(k protoreflect.MapKey, vx protoreflect.Value) bool { + vy := y.Get(k) + equal = y.Has(k) && equalValue(fd.MapValue(), vx, vy) + return equal + }) + return equal +} + +func equalList(fd protoreflect.FieldDescriptor, x, y protoreflect.List) bool { + if x.Len() != y.Len() { + return false + } + for i := x.Len() - 1; i >= 0; i-- { + if !equalValue(fd, x.Get(i), y.Get(i)) { + return false + } + } + return true +} + +func equalValue(fd protoreflect.FieldDescriptor, x, y protoreflect.Value) bool { + switch fd.Kind() { + case protoreflect.BoolKind: + return x.Bool() == y.Bool() + case protoreflect.EnumKind: + return x.Enum() == y.Enum() + case protoreflect.Int32Kind, protoreflect.Sint32Kind, + protoreflect.Int64Kind, protoreflect.Sint64Kind, + protoreflect.Sfixed32Kind, protoreflect.Sfixed64Kind: + return x.Int() == y.Int() + case protoreflect.Uint32Kind, protoreflect.Uint64Kind, + protoreflect.Fixed32Kind, protoreflect.Fixed64Kind: + return x.Uint() == y.Uint() + case protoreflect.FloatKind, protoreflect.DoubleKind: + return x.Float() == y.Float() + case protoreflect.StringKind: + return x.String() == y.String() + case protoreflect.BytesKind: + return bytes.Equal(x.Bytes(), y.Bytes()) + case protoreflect.MessageKind, protoreflect.GroupKind: + return equalMessage(x.Message(), y.Message()) + default: + return x.Interface() == y.Interface() + } +} + +func equalUnknown(x, y protoreflect.RawFields) bool { + lenX := len(x) + lenY := len(y) + if lenX != lenY { + return false + } + if lenX == 0 { + return true + } + if bytes.Equal([]byte(x), []byte(y)) { + return true + } + + mx := make(map[protoreflect.FieldNumber]protoreflect.RawFields) + my := make(map[protoreflect.FieldNumber]protoreflect.RawFields) + for len(x) > 0 { + fnum, _, n := protowire.ConsumeField(x) + mx[fnum] = append(mx[fnum], x[:n]...) + x = x[n:] + } + for len(y) > 0 { + fnum, _, n := protowire.ConsumeField(y) + my[fnum] = append(my[fnum], y[:n]...) + y = y[n:] + } + return reflect.DeepEqual(mx, my) +} + +func isAny(m protoreflect.Message) bool { + return string(m.Descriptor().FullName()) == "google.protobuf.Any" +} diff --git a/vendor/github.com/google/cel-go/common/types/pb/file.go b/vendor/github.com/google/cel-go/common/types/pb/file.go new file mode 100644 index 0000000000..e323afb1df --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/file.go @@ -0,0 +1,202 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package pb + +import ( + "fmt" + + "google.golang.org/protobuf/reflect/protoreflect" + + dynamicpb "google.golang.org/protobuf/types/dynamicpb" +) + +// newFileDescription returns a FileDescription instance with a complete listing of all the message +// types and enum values, as well as a map of extensions declared within any scope in the file. +func newFileDescription(fileDesc protoreflect.FileDescriptor, pbdb *Db) (*FileDescription, extensionMap) { + metadata := collectFileMetadata(fileDesc) + enums := make(map[string]*EnumValueDescription) + for name, enumVal := range metadata.enumValues { + enums[name] = newEnumValueDescription(name, enumVal) + } + types := make(map[string]*TypeDescription) + for name, msgType := range metadata.msgTypes { + types[name] = newTypeDescription(name, msgType, pbdb.extensions) + } + fileExtMap := make(extensionMap) + for typeName, extensions := range metadata.msgExtensionMap { + messageExtMap, found := fileExtMap[typeName] + if !found { + messageExtMap = make(map[string]*FieldDescription) + } + for _, ext := range extensions { + extDesc := dynamicpb.NewExtensionType(ext).TypeDescriptor() + messageExtMap[string(ext.FullName())] = newFieldDescription(extDesc) + } + fileExtMap[typeName] = messageExtMap + } + return &FileDescription{ + name: fileDesc.Path(), + types: types, + enums: enums, + }, fileExtMap +} + +// FileDescription holds a map of all types and enum values declared within a proto file. +type FileDescription struct { + name string + types map[string]*TypeDescription + enums map[string]*EnumValueDescription +} + +// Copy creates a copy of the FileDescription with updated Db references within its types. +func (fd *FileDescription) Copy(pbdb *Db) *FileDescription { + typesCopy := make(map[string]*TypeDescription, len(fd.types)) + for k, v := range fd.types { + typesCopy[k] = v.Copy(pbdb) + } + return &FileDescription{ + name: fd.name, + types: typesCopy, + enums: fd.enums, + } +} + +// GetName returns the fully qualified file path for the file. +func (fd *FileDescription) GetName() string { + return fd.name +} + +// GetEnumDescription returns an EnumDescription for a qualified enum value +// name declared within the .proto file. +func (fd *FileDescription) GetEnumDescription(enumName string) (*EnumValueDescription, bool) { + ed, found := fd.enums[sanitizeProtoName(enumName)] + return ed, found +} + +// GetEnumNames returns the string names of all enum values in the file. +func (fd *FileDescription) GetEnumNames() []string { + enumNames := make([]string, len(fd.enums)) + i := 0 + for _, e := range fd.enums { + enumNames[i] = e.Name() + i++ + } + return enumNames +} + +// GetTypeDescription returns a TypeDescription for a qualified protobuf message type name +// declared within the .proto file. +func (fd *FileDescription) GetTypeDescription(typeName string) (*TypeDescription, bool) { + td, found := fd.types[sanitizeProtoName(typeName)] + return td, found +} + +// GetTypeNames returns the list of all type names contained within the file. +func (fd *FileDescription) GetTypeNames() []string { + typeNames := make([]string, len(fd.types)) + i := 0 + for _, t := range fd.types { + typeNames[i] = t.Name() + i++ + } + return typeNames +} + +// sanitizeProtoName strips the leading '.' from the proto message name. +func sanitizeProtoName(name string) string { + if name != "" && name[0] == '.' { + return name[1:] + } + return name +} + +// fileMetadata is a flattened view of message types and enum values within a file descriptor. +type fileMetadata struct { + // msgTypes maps from fully-qualified message name to descriptor. + msgTypes map[string]protoreflect.MessageDescriptor + // enumValues maps from fully-qualified enum value to enum value descriptor. + enumValues map[string]protoreflect.EnumValueDescriptor + // msgExtensionMap maps from the protobuf message name being extended to a set of extensions + // for the type. + msgExtensionMap map[string][]protoreflect.ExtensionDescriptor + + // TODO: support enum type definitions for use in future type-check enhancements. +} + +// collectFileMetadata traverses the proto file object graph to collect message types and enum +// values and index them by their fully qualified names. +func collectFileMetadata(fileDesc protoreflect.FileDescriptor) *fileMetadata { + msgTypes := make(map[string]protoreflect.MessageDescriptor) + enumValues := make(map[string]protoreflect.EnumValueDescriptor) + msgExtensionMap := make(map[string][]protoreflect.ExtensionDescriptor) + collectMsgTypes(fileDesc.Messages(), msgTypes, enumValues, msgExtensionMap) + collectEnumValues(fileDesc.Enums(), enumValues) + collectExtensions(fileDesc.Extensions(), msgExtensionMap) + return &fileMetadata{ + msgTypes: msgTypes, + enumValues: enumValues, + msgExtensionMap: msgExtensionMap, + } +} + +// collectMsgTypes recursively collects messages, nested messages, and nested enums into a map of +// fully qualified protobuf names to descriptors. +func collectMsgTypes(msgTypes protoreflect.MessageDescriptors, + msgTypeMap map[string]protoreflect.MessageDescriptor, + enumValueMap map[string]protoreflect.EnumValueDescriptor, + msgExtensionMap map[string][]protoreflect.ExtensionDescriptor) { + for i := 0; i < msgTypes.Len(); i++ { + msgType := msgTypes.Get(i) + msgTypeMap[string(msgType.FullName())] = msgType + nestedMsgTypes := msgType.Messages() + if nestedMsgTypes.Len() != 0 { + collectMsgTypes(nestedMsgTypes, msgTypeMap, enumValueMap, msgExtensionMap) + } + nestedEnumTypes := msgType.Enums() + if nestedEnumTypes.Len() != 0 { + collectEnumValues(nestedEnumTypes, enumValueMap) + } + nestedExtensions := msgType.Extensions() + if nestedExtensions.Len() != 0 { + collectExtensions(nestedExtensions, msgExtensionMap) + } + } +} + +// collectEnumValues accumulates the enum values within an enum declaration. +func collectEnumValues(enumTypes protoreflect.EnumDescriptors, enumValueMap map[string]protoreflect.EnumValueDescriptor) { + for i := 0; i < enumTypes.Len(); i++ { + enumType := enumTypes.Get(i) + enumTypeValues := enumType.Values() + for j := 0; j < enumTypeValues.Len(); j++ { + enumValue := enumTypeValues.Get(j) + enumValueName := fmt.Sprintf("%s.%s", string(enumType.FullName()), string(enumValue.Name())) + enumValueMap[enumValueName] = enumValue + } + } +} + +func collectExtensions(extensions protoreflect.ExtensionDescriptors, msgExtensionMap map[string][]protoreflect.ExtensionDescriptor) { + for i := 0; i < extensions.Len(); i++ { + ext := extensions.Get(i) + extendsMsg := string(ext.ContainingMessage().FullName()) + msgExts, found := msgExtensionMap[extendsMsg] + if !found { + msgExts = []protoreflect.ExtensionDescriptor{} + } + msgExts = append(msgExts, ext) + msgExtensionMap[extendsMsg] = msgExts + } +} diff --git a/vendor/github.com/google/cel-go/common/types/pb/pb.go b/vendor/github.com/google/cel-go/common/types/pb/pb.go new file mode 100644 index 0000000000..eadebcb04e --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/pb.go @@ -0,0 +1,258 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package pb reflects over protocol buffer descriptors to generate objects +// that simplify type, enum, and field lookup. +package pb + +import ( + "fmt" + + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" + + anypb "google.golang.org/protobuf/types/known/anypb" + durpb "google.golang.org/protobuf/types/known/durationpb" + emptypb "google.golang.org/protobuf/types/known/emptypb" + structpb "google.golang.org/protobuf/types/known/structpb" + tspb "google.golang.org/protobuf/types/known/timestamppb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// Db maps from file / message / enum name to file description. +// +// Each Db is isolated from each other, and while information about protobuf descriptors may be +// fetched from the global protobuf registry, no descriptors are added to this registry, else +// the isolation guarantees of the Db object would be violated. +type Db struct { + revFileDescriptorMap map[string]*FileDescription + // files contains the deduped set of FileDescriptions whose types are contained in the pb.Db. + files []*FileDescription + // extensions contains the mapping between a given type name, extension name and its FieldDescription + extensions map[string]map[string]*FieldDescription +} + +// extensionsMap is a type alias to a map[typeName]map[extensionName]*FieldDescription +type extensionMap = map[string]map[string]*FieldDescription + +var ( + // DefaultDb used at evaluation time or unless overridden at check time. + DefaultDb = &Db{ + revFileDescriptorMap: make(map[string]*FileDescription), + files: []*FileDescription{}, + extensions: make(extensionMap), + } +) + +// Merge will copy the source proto message into the destination, or error if the merge cannot be completed. +// +// Unlike the proto.Merge, this method will fallback to proto.Marshal/Unmarshal of the two proto messages do not +// share the same instance of their type descriptor. +func Merge(dstPB, srcPB proto.Message) error { + src, dst := srcPB.ProtoReflect(), dstPB.ProtoReflect() + if src.Descriptor() == dst.Descriptor() { + proto.Merge(dstPB, srcPB) + return nil + } + if src.Descriptor().FullName() != dst.Descriptor().FullName() { + return fmt.Errorf("pb.Merge() arguments must be the same type. got: %v, %v", + dst.Descriptor().FullName(), src.Descriptor().FullName()) + } + bytes, err := proto.Marshal(srcPB) + if err != nil { + return fmt.Errorf("pb.Merge(dstPB, srcPB) failed to marshal source proto: %v", err) + } + err = proto.Unmarshal(bytes, dstPB) + if err != nil { + return fmt.Errorf("pb.Merge(dstPB, srcPB) failed to unmarshal to dest proto: %v", err) + } + return nil +} + +// NewDb creates a new `pb.Db` with an empty type name to file description map. +func NewDb() *Db { + pbdb := &Db{ + revFileDescriptorMap: make(map[string]*FileDescription), + files: []*FileDescription{}, + extensions: make(extensionMap), + } + // The FileDescription objects in the default db contain lazily initialized TypeDescription + // values which may point to the state contained in the DefaultDb irrespective of this shallow + // copy; however, the type graph for a field is idempotently computed, and is guaranteed to + // only be initialized once thanks to atomic values within the TypeDescription objects, so it + // is safe to share these values across instances. + for k, v := range DefaultDb.revFileDescriptorMap { + pbdb.revFileDescriptorMap[k] = v + } + pbdb.files = append(pbdb.files, DefaultDb.files...) + return pbdb +} + +// Copy creates a copy of the current database with its own internal descriptor mapping. +func (pbdb *Db) Copy() *Db { + copy := NewDb() + for _, fd := range pbdb.files { + hasFile := false + for _, fd2 := range copy.files { + if fd2 == fd { + hasFile = true + } + } + if !hasFile { + fd = fd.Copy(copy) + copy.files = append(copy.files, fd) + } + for _, enumValName := range fd.GetEnumNames() { + copy.revFileDescriptorMap[enumValName] = fd + } + for _, msgTypeName := range fd.GetTypeNames() { + copy.revFileDescriptorMap[msgTypeName] = fd + } + copy.revFileDescriptorMap[fd.GetName()] = fd + } + for typeName, extFieldMap := range pbdb.extensions { + copyExtFieldMap, found := copy.extensions[typeName] + if !found { + copyExtFieldMap = make(map[string]*FieldDescription, len(extFieldMap)) + } + for extFieldName, fd := range extFieldMap { + copyExtFieldMap[extFieldName] = fd + } + copy.extensions[typeName] = copyExtFieldMap + } + return copy +} + +// FileDescriptions returns the set of file descriptions associated with this db. +func (pbdb *Db) FileDescriptions() []*FileDescription { + return pbdb.files +} + +// RegisterDescriptor produces a `FileDescription` from a `FileDescriptor` and registers the +// message and enum types into the `pb.Db`. +func (pbdb *Db) RegisterDescriptor(fileDesc protoreflect.FileDescriptor) (*FileDescription, error) { + fd, found := pbdb.revFileDescriptorMap[fileDesc.Path()] + if found { + return fd, nil + } + // Make sure to search the global registry to see if a protoreflect.FileDescriptor for + // the file specified has been linked into the binary. If so, use the copy of the descriptor + // from the global cache. + // + // Note: Proto reflection relies on descriptor values being object equal rather than object + // equivalence. This choice means that a FieldDescriptor generated from a FileDescriptorProto + // will be incompatible with the FieldDescriptor in the global registry and any message created + // from that global registry. + globalFD, err := protoregistry.GlobalFiles.FindFileByPath(fileDesc.Path()) + if err == nil { + fileDesc = globalFD + } + var fileExtMap extensionMap + fd, fileExtMap = newFileDescription(fileDesc, pbdb) + for _, enumValName := range fd.GetEnumNames() { + pbdb.revFileDescriptorMap[enumValName] = fd + } + for _, msgTypeName := range fd.GetTypeNames() { + pbdb.revFileDescriptorMap[msgTypeName] = fd + } + pbdb.revFileDescriptorMap[fd.GetName()] = fd + + // Return the specific file descriptor registered. + pbdb.files = append(pbdb.files, fd) + + // Index the protobuf message extensions from the file into the pbdb + for typeName, extMap := range fileExtMap { + typeExtMap, found := pbdb.extensions[typeName] + if !found { + pbdb.extensions[typeName] = extMap + continue + } + for extName, field := range extMap { + typeExtMap[extName] = field + } + } + return fd, nil +} + +// RegisterMessage produces a `FileDescription` from a `message` and registers the message and all +// other definitions within the message file into the `pb.Db`. +func (pbdb *Db) RegisterMessage(message proto.Message) (*FileDescription, error) { + msgDesc := message.ProtoReflect().Descriptor() + msgName := msgDesc.FullName() + typeName := sanitizeProtoName(string(msgName)) + if fd, found := pbdb.revFileDescriptorMap[typeName]; found { + return fd, nil + } + return pbdb.RegisterDescriptor(msgDesc.ParentFile()) +} + +// DescribeEnum takes a qualified enum name and returns an `EnumDescription` if it exists in the +// `pb.Db`. +func (pbdb *Db) DescribeEnum(enumName string) (*EnumValueDescription, bool) { + enumName = sanitizeProtoName(enumName) + if fd, found := pbdb.revFileDescriptorMap[enumName]; found { + return fd.GetEnumDescription(enumName) + } + return nil, false +} + +// DescribeType returns a `TypeDescription` for the `typeName` if it exists in the `pb.Db`. +func (pbdb *Db) DescribeType(typeName string) (*TypeDescription, bool) { + typeName = sanitizeProtoName(typeName) + if fd, found := pbdb.revFileDescriptorMap[typeName]; found { + return fd.GetTypeDescription(typeName) + } + return nil, false +} + +// CollectFileDescriptorSet builds a file descriptor set associated with the file where the input +// message is declared. +func CollectFileDescriptorSet(message proto.Message) map[string]protoreflect.FileDescriptor { + fdMap := map[string]protoreflect.FileDescriptor{} + parentFile := message.ProtoReflect().Descriptor().ParentFile() + fdMap[parentFile.Path()] = parentFile + // Initialize list of dependencies + deps := make([]protoreflect.FileImport, parentFile.Imports().Len()) + for i := 0; i < parentFile.Imports().Len(); i++ { + deps[i] = parentFile.Imports().Get(i) + } + // Expand list for new dependencies + for i := 0; i < len(deps); i++ { + dep := deps[i] + if _, found := fdMap[dep.Path()]; found { + continue + } + fdMap[dep.Path()] = dep.FileDescriptor + for j := 0; j < dep.FileDescriptor.Imports().Len(); j++ { + deps = append(deps, dep.FileDescriptor.Imports().Get(j)) + } + } + return fdMap +} + +func init() { + // Describe well-known types to ensure they can always be resolved by the check and interpret + // execution phases. + // + // The following subset of message types is enough to ensure that all well-known types can + // resolved in the runtime, since describing the value results in describing the whole file + // where the message is declared. + DefaultDb.RegisterMessage(&anypb.Any{}) + DefaultDb.RegisterMessage(&durpb.Duration{}) + DefaultDb.RegisterMessage(&emptypb.Empty{}) + DefaultDb.RegisterMessage(&tspb.Timestamp{}) + DefaultDb.RegisterMessage(&structpb.Value{}) + DefaultDb.RegisterMessage(&wrapperspb.BoolValue{}) +} diff --git a/vendor/github.com/google/cel-go/common/types/pb/type.go b/vendor/github.com/google/cel-go/common/types/pb/type.go new file mode 100644 index 0000000000..bdd474c95a --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/pb/type.go @@ -0,0 +1,614 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package pb + +import ( + "fmt" + "reflect" + + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + dynamicpb "google.golang.org/protobuf/types/dynamicpb" + anypb "google.golang.org/protobuf/types/known/anypb" + dpb "google.golang.org/protobuf/types/known/durationpb" + structpb "google.golang.org/protobuf/types/known/structpb" + tpb "google.golang.org/protobuf/types/known/timestamppb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// description is a private interface used to make it convenient to perform type unwrapping at +// the TypeDescription or FieldDescription level. +type description interface { + // Zero returns an empty immutable protobuf message when the description is a protobuf message + // type. + Zero() proto.Message +} + +// newTypeDescription produces a TypeDescription value for the fully-qualified proto type name +// with a given descriptor. +func newTypeDescription(typeName string, desc protoreflect.MessageDescriptor, extensions extensionMap) *TypeDescription { + msgType := dynamicpb.NewMessageType(desc) + msgZero := dynamicpb.NewMessage(desc) + fieldMap := map[string]*FieldDescription{} + fields := desc.Fields() + for i := 0; i < fields.Len(); i++ { + f := fields.Get(i) + fieldMap[string(f.Name())] = newFieldDescription(f) + } + return &TypeDescription{ + typeName: typeName, + desc: desc, + msgType: msgType, + fieldMap: fieldMap, + extensions: extensions, + reflectType: reflectTypeOf(msgZero), + zeroMsg: zeroValueOf(msgZero), + } +} + +// TypeDescription is a collection of type metadata relevant to expression +// checking and evaluation. +type TypeDescription struct { + typeName string + desc protoreflect.MessageDescriptor + msgType protoreflect.MessageType + fieldMap map[string]*FieldDescription + extensions extensionMap + reflectType reflect.Type + zeroMsg proto.Message +} + +// Copy copies the type description with updated references to the Db. +func (td *TypeDescription) Copy(pbdb *Db) *TypeDescription { + return &TypeDescription{ + typeName: td.typeName, + desc: td.desc, + msgType: td.msgType, + fieldMap: td.fieldMap, + extensions: pbdb.extensions, + reflectType: td.reflectType, + zeroMsg: td.zeroMsg, + } +} + +// FieldMap returns a string field name to FieldDescription map. +func (td *TypeDescription) FieldMap() map[string]*FieldDescription { + return td.fieldMap +} + +// FieldByName returns (FieldDescription, true) if the field name is declared within the type. +func (td *TypeDescription) FieldByName(name string) (*FieldDescription, bool) { + fd, found := td.fieldMap[name] + if found { + return fd, true + } + extFieldMap, found := td.extensions[td.typeName] + if !found { + return nil, false + } + fd, found = extFieldMap[name] + return fd, found +} + +// MaybeUnwrap accepts a proto message as input and unwraps it to a primitive CEL type if possible. +// +// This method returns the unwrapped value and 'true', else the original value and 'false'. +func (td *TypeDescription) MaybeUnwrap(msg proto.Message) (any, bool, error) { + return unwrap(td, msg) +} + +// Name returns the fully-qualified name of the type. +func (td *TypeDescription) Name() string { + return string(td.desc.FullName()) +} + +// New returns a mutable proto message +func (td *TypeDescription) New() protoreflect.Message { + return td.msgType.New() +} + +// ReflectType returns the Golang reflect.Type for this type. +func (td *TypeDescription) ReflectType() reflect.Type { + return td.reflectType +} + +// Zero returns the zero proto.Message value for this type. +func (td *TypeDescription) Zero() proto.Message { + return td.zeroMsg +} + +// newFieldDescription creates a new field description from a protoreflect.FieldDescriptor. +func newFieldDescription(fieldDesc protoreflect.FieldDescriptor) *FieldDescription { + var reflectType reflect.Type + var zeroMsg proto.Message + switch fieldDesc.Kind() { + case protoreflect.EnumKind: + reflectType = reflectTypeOf(protoreflect.EnumNumber(0)) + case protoreflect.GroupKind, protoreflect.MessageKind: + zeroMsg = dynamicpb.NewMessage(fieldDesc.Message()) + reflectType = reflectTypeOf(zeroMsg) + default: + reflectType = reflectTypeOf(fieldDesc.Default().Interface()) + if fieldDesc.IsList() { + var elemValue protoreflect.Value + if fieldDesc.IsExtension() { + et := dynamicpb.NewExtensionType(fieldDesc) + elemValue = et.New().List().NewElement() + } else { + parentMsgType := fieldDesc.ContainingMessage() + parentMsg := dynamicpb.NewMessage(parentMsgType) + listField := parentMsg.NewField(fieldDesc).List() + elemValue = listField.NewElement() + } + elem := elemValue.Interface() + switch elemType := elem.(type) { + case protoreflect.Message: + elem = elemType.Interface() + } + reflectType = reflectTypeOf(elem) + } + } + // Ensure the list type is appropriately reflected as a Go-native list. + if fieldDesc.IsList() { + reflectType = reflect.SliceOf(reflectType) + } + var keyType, valType *FieldDescription + if fieldDesc.IsMap() { + keyType = newFieldDescription(fieldDesc.MapKey()) + valType = newFieldDescription(fieldDesc.MapValue()) + } + return &FieldDescription{ + desc: fieldDesc, + KeyType: keyType, + ValueType: valType, + reflectType: reflectType, + zeroMsg: zeroValueOf(zeroMsg), + } +} + +// FieldDescription holds metadata related to fields declared within a type. +type FieldDescription struct { + // KeyType holds the key FieldDescription for map fields. + KeyType *FieldDescription + // ValueType holds the value FieldDescription for map fields. + ValueType *FieldDescription + + desc protoreflect.FieldDescriptor + reflectType reflect.Type + zeroMsg proto.Message +} + +// CheckedType returns the type-definition used at type-check time. +func (fd *FieldDescription) CheckedType() *exprpb.Type { + if fd.desc.IsMap() { + return &exprpb.Type{ + TypeKind: &exprpb.Type_MapType_{ + MapType: &exprpb.Type_MapType{ + KeyType: fd.KeyType.typeDefToType(), + ValueType: fd.ValueType.typeDefToType(), + }, + }, + } + } + if fd.desc.IsList() { + return &exprpb.Type{ + TypeKind: &exprpb.Type_ListType_{ + ListType: &exprpb.Type_ListType{ + ElemType: fd.typeDefToType()}}} + } + return fd.typeDefToType() +} + +// Descriptor returns the protoreflect.FieldDescriptor for this type. +func (fd *FieldDescription) Descriptor() protoreflect.FieldDescriptor { + return fd.desc +} + +// IsSet returns whether the field is set on the target value, per the proto presence conventions +// of proto2 or proto3 accordingly. +// +// This function implements the FieldType.IsSet function contract which can be used to operate on +// more than just protobuf field accesses; however, the target here must be a protobuf.Message. +func (fd *FieldDescription) IsSet(target any) bool { + switch v := target.(type) { + case proto.Message: + pbRef := v.ProtoReflect() + pbDesc := pbRef.Descriptor() + if pbDesc == fd.desc.ContainingMessage() { + // When the target protobuf shares the same message descriptor instance as the field + // descriptor, use the cached field descriptor value. + return pbRef.Has(fd.desc) + } + // Otherwise, fallback to a dynamic lookup of the field descriptor from the target + // instance as an attempt to use the cached field descriptor will result in a panic. + return pbRef.Has(pbDesc.Fields().ByName(protoreflect.Name(fd.Name()))) + default: + return false + } +} + +// GetFrom returns the accessor method associated with the field on the proto generated struct. +// +// If the field is not set, the proto default value is returned instead. +// +// This function implements the FieldType.GetFrom function contract which can be used to operate +// on more than just protobuf field accesses; however, the target here must be a protobuf.Message. +func (fd *FieldDescription) GetFrom(target any) (any, error) { + v, ok := target.(proto.Message) + if !ok { + return nil, fmt.Errorf("unsupported field selection target: (%T)%v", target, target) + } + pbRef := v.ProtoReflect() + pbDesc := pbRef.Descriptor() + var fieldVal any + if pbDesc == fd.desc.ContainingMessage() { + // When the target protobuf shares the same message descriptor instance as the field + // descriptor, use the cached field descriptor value. + fieldVal = pbRef.Get(fd.desc).Interface() + } else { + // Otherwise, fallback to a dynamic lookup of the field descriptor from the target + // instance as an attempt to use the cached field descriptor will result in a panic. + fieldVal = pbRef.Get(pbDesc.Fields().ByName(protoreflect.Name(fd.Name()))).Interface() + } + switch fv := fieldVal.(type) { + // Fast-path return for primitive types. + case bool, []byte, float32, float64, int32, int64, string, uint32, uint64, protoreflect.List: + return fv, nil + case protoreflect.EnumNumber: + return int64(fv), nil + case protoreflect.Map: + // Return a wrapper around the protobuf-reflected Map types which carries additional + // information about the key and value definitions of the map. + return &Map{Map: fv, KeyType: fd.KeyType, ValueType: fd.ValueType}, nil + case protoreflect.Message: + // Make sure to unwrap well-known protobuf types before returning. + unwrapped, _, err := fd.MaybeUnwrapDynamic(fv) + return unwrapped, err + default: + return fv, nil + } +} + +// IsEnum returns true if the field type refers to an enum value. +func (fd *FieldDescription) IsEnum() bool { + return fd.ProtoKind() == protoreflect.EnumKind +} + +// IsMap returns true if the field is of map type. +func (fd *FieldDescription) IsMap() bool { + return fd.desc.IsMap() +} + +// IsMessage returns true if the field is of message type. +func (fd *FieldDescription) IsMessage() bool { + kind := fd.ProtoKind() + return kind == protoreflect.MessageKind || kind == protoreflect.GroupKind +} + +// IsOneof returns true if the field is declared within a oneof block. +func (fd *FieldDescription) IsOneof() bool { + return fd.desc.ContainingOneof() != nil +} + +// IsList returns true if the field is a repeated value. +// +// This method will also return true for map values, so check whether the +// field is also a map. +func (fd *FieldDescription) IsList() bool { + return fd.desc.IsList() +} + +// MaybeUnwrapDynamic takes the reflected protoreflect.Message and determines whether the +// value can be unwrapped to a more primitive CEL type. +// +// This function returns the unwrapped value and 'true' on success, or the original value +// and 'false' otherwise. +func (fd *FieldDescription) MaybeUnwrapDynamic(msg protoreflect.Message) (any, bool, error) { + return unwrapDynamic(fd, msg) +} + +// Name returns the CamelCase name of the field within the proto-based struct. +func (fd *FieldDescription) Name() string { + return string(fd.desc.Name()) +} + +// ProtoKind returns the protobuf reflected kind of the field. +func (fd *FieldDescription) ProtoKind() protoreflect.Kind { + return fd.desc.Kind() +} + +// ReflectType returns the Golang reflect.Type for this field. +func (fd *FieldDescription) ReflectType() reflect.Type { + return fd.reflectType +} + +// String returns the fully qualified name of the field within its type as well as whether the +// field occurs within a oneof. +func (fd *FieldDescription) String() string { + return fmt.Sprintf("%v.%s `oneof=%t`", fd.desc.ContainingMessage().FullName(), fd.Name(), fd.IsOneof()) +} + +// Zero returns the zero value for the protobuf message represented by this field. +// +// If the field is not a proto.Message type, the zero value is nil. +func (fd *FieldDescription) Zero() proto.Message { + return fd.zeroMsg +} + +func (fd *FieldDescription) typeDefToType() *exprpb.Type { + if fd.IsMessage() { + msgType := string(fd.desc.Message().FullName()) + if wk, found := CheckedWellKnowns[msgType]; found { + return wk + } + return checkedMessageType(msgType) + } + if fd.IsEnum() { + return checkedInt + } + return CheckedPrimitives[fd.ProtoKind()] +} + +// Map wraps the protoreflect.Map object with a key and value FieldDescription for use in +// retrieving individual elements within CEL value data types. +type Map struct { + protoreflect.Map + KeyType *FieldDescription + ValueType *FieldDescription +} + +func checkedMessageType(name string) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_MessageType{MessageType: name}} +} + +func checkedPrimitive(primitive exprpb.Type_PrimitiveType) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_Primitive{Primitive: primitive}} +} + +func checkedWellKnown(wellKnown exprpb.Type_WellKnownType) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_WellKnown{WellKnown: wellKnown}} +} + +func checkedWrap(t *exprpb.Type) *exprpb.Type { + return &exprpb.Type{ + TypeKind: &exprpb.Type_Wrapper{Wrapper: t.GetPrimitive()}} +} + +// unwrap unwraps the provided proto.Message value, potentially based on the description if the +// input message is a *dynamicpb.Message which obscures the typing information from Go. +// +// Returns the unwrapped value and 'true' if unwrapped, otherwise the input value and 'false'. +func unwrap(desc description, msg proto.Message) (any, bool, error) { + switch v := msg.(type) { + case *anypb.Any: + dynMsg, err := v.UnmarshalNew() + if err != nil { + return v, false, err + } + return unwrapDynamic(desc, dynMsg.ProtoReflect()) + case *dynamicpb.Message: + return unwrapDynamic(desc, v) + case *dpb.Duration: + return v.AsDuration(), true, nil + case *tpb.Timestamp: + return v.AsTime(), true, nil + case *structpb.Value: + switch v.GetKind().(type) { + case *structpb.Value_BoolValue: + return v.GetBoolValue(), true, nil + case *structpb.Value_ListValue: + return v.GetListValue(), true, nil + case *structpb.Value_NullValue: + return structpb.NullValue_NULL_VALUE, true, nil + case *structpb.Value_NumberValue: + return v.GetNumberValue(), true, nil + case *structpb.Value_StringValue: + return v.GetStringValue(), true, nil + case *structpb.Value_StructValue: + return v.GetStructValue(), true, nil + default: + return structpb.NullValue_NULL_VALUE, true, nil + } + case *wrapperspb.BoolValue: + if v == nil { + return nil, true, nil + } + return v.GetValue(), true, nil + case *wrapperspb.BytesValue: + if v == nil { + return nil, true, nil + } + return v.GetValue(), true, nil + case *wrapperspb.DoubleValue: + if v == nil { + return nil, true, nil + } + return v.GetValue(), true, nil + case *wrapperspb.FloatValue: + if v == nil { + return nil, true, nil + } + return float64(v.GetValue()), true, nil + case *wrapperspb.Int32Value: + if v == nil { + return nil, true, nil + } + return int64(v.GetValue()), true, nil + case *wrapperspb.Int64Value: + if v == nil { + return nil, true, nil + } + return v.GetValue(), true, nil + case *wrapperspb.StringValue: + if v == nil { + return nil, true, nil + } + return v.GetValue(), true, nil + case *wrapperspb.UInt32Value: + if v == nil { + return nil, true, nil + } + return uint64(v.GetValue()), true, nil + case *wrapperspb.UInt64Value: + if v == nil { + return nil, true, nil + } + return v.GetValue(), true, nil + } + return msg, false, nil +} + +// unwrapDynamic unwraps a reflected protobuf Message value. +// +// Returns the unwrapped value and 'true' if unwrapped, otherwise the input value and 'false'. +func unwrapDynamic(desc description, refMsg protoreflect.Message) (any, bool, error) { + msg := refMsg.Interface() + if !refMsg.IsValid() { + msg = desc.Zero() + } + // In order to ensure that these wrapped types match the expectations of the CEL type system + // the dynamicpb.Message must be merged with an protobuf instance of the well-known type value. + typeName := string(refMsg.Descriptor().FullName()) + switch typeName { + case "google.protobuf.Any": + // Note, Any values require further unwrapping; however, this unwrapping may or may not + // be to a well-known type. If the unwrapped value is a well-known type it will be further + // unwrapped before being returned to the caller. Otherwise, the dynamic protobuf object + // represented by the Any will be returned. + unwrappedAny := &anypb.Any{} + err := Merge(unwrappedAny, msg) + if err != nil { + return nil, false, fmt.Errorf("unwrap dynamic field failed: %v", err) + } + dynMsg, err := unwrappedAny.UnmarshalNew() + if err != nil { + // Allow the error to move further up the stack as it should result in an type + // conversion error if the caller does not recover it somehow. + return nil, false, fmt.Errorf("unmarshal dynamic any failed: %v", err) + } + // Attempt to unwrap the dynamic type, otherwise return the dynamic message. + unwrapped, nested, err := unwrapDynamic(desc, dynMsg.ProtoReflect()) + if err == nil && nested { + return unwrapped, true, nil + } + return dynMsg, true, err + case "google.protobuf.BoolValue", + "google.protobuf.BytesValue", + "google.protobuf.DoubleValue", + "google.protobuf.FloatValue", + "google.protobuf.Int32Value", + "google.protobuf.Int64Value", + "google.protobuf.StringValue", + "google.protobuf.UInt32Value", + "google.protobuf.UInt64Value": + // The msg value is ignored when dealing with wrapper types as they have a null or value + // behavior, rather than the standard zero value behavior of other proto message types. + if !refMsg.IsValid() { + return structpb.NullValue_NULL_VALUE, true, nil + } + valueField := refMsg.Descriptor().Fields().ByName("value") + return refMsg.Get(valueField).Interface(), true, nil + case "google.protobuf.Duration": + unwrapped := &dpb.Duration{} + err := Merge(unwrapped, msg) + if err != nil { + return nil, false, err + } + return unwrapped.AsDuration(), true, nil + case "google.protobuf.ListValue": + unwrapped := &structpb.ListValue{} + err := Merge(unwrapped, msg) + if err != nil { + return nil, false, err + } + return unwrapped, true, nil + case "google.protobuf.NullValue": + return structpb.NullValue_NULL_VALUE, true, nil + case "google.protobuf.Struct": + unwrapped := &structpb.Struct{} + err := Merge(unwrapped, msg) + if err != nil { + return nil, false, err + } + return unwrapped, true, nil + case "google.protobuf.Timestamp": + unwrapped := &tpb.Timestamp{} + err := Merge(unwrapped, msg) + if err != nil { + return nil, false, err + } + return unwrapped.AsTime(), true, nil + case "google.protobuf.Value": + unwrapped := &structpb.Value{} + err := Merge(unwrapped, msg) + if err != nil { + return nil, false, err + } + return unwrap(desc, unwrapped) + } + return msg, false, nil +} + +// reflectTypeOf intercepts the reflect.Type call to ensure that dynamicpb.Message types preserve +// well-known protobuf reflected types expected by the CEL type system. +func reflectTypeOf(val any) reflect.Type { + switch v := val.(type) { + case proto.Message: + return reflect.TypeOf(zeroValueOf(v)) + default: + return reflect.TypeOf(v) + } +} + +// zeroValueOf will return the strongest possible proto.Message representing the default protobuf +// message value of the input msg type. +func zeroValueOf(msg proto.Message) proto.Message { + if msg == nil { + return nil + } + typeName := string(msg.ProtoReflect().Descriptor().FullName()) + zeroVal, found := zeroValueMap[typeName] + if found { + return zeroVal + } + return msg +} + +var ( + jsonValueTypeURL = "types.googleapis.com/google.protobuf.Value" + + zeroValueMap = map[string]proto.Message{ + "google.protobuf.Any": &anypb.Any{TypeUrl: jsonValueTypeURL}, + "google.protobuf.Duration": &dpb.Duration{}, + "google.protobuf.ListValue": &structpb.ListValue{}, + "google.protobuf.Struct": &structpb.Struct{}, + "google.protobuf.Timestamp": &tpb.Timestamp{}, + "google.protobuf.Value": &structpb.Value{}, + "google.protobuf.BoolValue": wrapperspb.Bool(false), + "google.protobuf.BytesValue": wrapperspb.Bytes([]byte{}), + "google.protobuf.DoubleValue": wrapperspb.Double(0.0), + "google.protobuf.FloatValue": wrapperspb.Float(0.0), + "google.protobuf.Int32Value": wrapperspb.Int32(0), + "google.protobuf.Int64Value": wrapperspb.Int64(0), + "google.protobuf.StringValue": wrapperspb.String(""), + "google.protobuf.UInt32Value": wrapperspb.UInt32(0), + "google.protobuf.UInt64Value": wrapperspb.UInt64(0), + } +) diff --git a/vendor/github.com/google/cel-go/common/types/provider.go b/vendor/github.com/google/cel-go/common/types/provider.go new file mode 100644 index 0000000000..936a4e28b2 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/provider.go @@ -0,0 +1,766 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "time" + + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + "github.com/google/cel-go/common/types/pb" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" + anypb "google.golang.org/protobuf/types/known/anypb" + dpb "google.golang.org/protobuf/types/known/durationpb" + structpb "google.golang.org/protobuf/types/known/structpb" + tpb "google.golang.org/protobuf/types/known/timestamppb" +) + +// Adapter converts native Go values of varying type and complexity to equivalent CEL values. +type Adapter = ref.TypeAdapter + +// Provider specifies functions for creating new object instances and for resolving +// enum values by name. +type Provider interface { + // EnumValue returns the numeric value of the given enum value name. + EnumValue(enumName string) ref.Val + + // FindIdent takes a qualified identifier name and returns a ref.Val if one exists. + FindIdent(identName string) (ref.Val, bool) + + // FindStructType returns the Type give a qualified type name. + // + // For historical reasons, only struct types are expected to be returned through this + // method, and the type values are expected to be wrapped in a TypeType instance using + // TypeTypeWithParam(). + // + // Returns false if not found. + FindStructType(structType string) (*Type, bool) + + // FindStructFieldNames returns thet field names associated with the type, if the type + // is found. + FindStructFieldNames(structType string) ([]string, bool) + + // FieldStructFieldType returns the field type for a checked type value. Returns + // false if the field could not be found. + FindStructFieldType(structType, fieldName string) (*FieldType, bool) + + // NewValue creates a new type value from a qualified name and map of field + // name to value. + // + // Note, for each value, the Val.ConvertToNative function will be invoked + // to convert the Val to the field's native type. If an error occurs during + // conversion, the NewValue will be a types.Err. + NewValue(structType string, fields map[string]ref.Val) ref.Val +} + +// FieldType represents a field's type value and whether that field supports presence detection. +type FieldType struct { + // Type of the field as a CEL native type value. + Type *Type + + // IsSet indicates whether the field is set on an input object. + IsSet ref.FieldTester + + // GetFrom retrieves the field value on the input object, if set. + GetFrom ref.FieldGetter +} + +// Registry provides type information for a set of registered types. +type Registry struct { + revTypeMap map[string]*Type + pbdb *pb.Db +} + +// NewRegistry accepts a list of proto message instances and returns a type +// provider which can create new instances of the provided message or any +// message that proto depends upon in its FileDescriptor. +func NewRegistry(types ...proto.Message) (*Registry, error) { + p := &Registry{ + revTypeMap: make(map[string]*Type), + pbdb: pb.NewDb(), + } + err := p.RegisterType( + BoolType, + BytesType, + DoubleType, + DurationType, + IntType, + ListType, + MapType, + NullType, + StringType, + TimestampType, + TypeType, + UintType) + if err != nil { + return nil, err + } + // This block ensures that the well-known protobuf types are registered by default. + for _, fd := range p.pbdb.FileDescriptions() { + err = p.registerAllTypes(fd) + if err != nil { + return nil, err + } + } + for _, msgType := range types { + err = p.RegisterMessage(msgType) + if err != nil { + return nil, err + } + } + return p, nil +} + +// NewEmptyRegistry returns a registry which is completely unconfigured. +func NewEmptyRegistry() *Registry { + return &Registry{ + revTypeMap: make(map[string]*Type), + pbdb: pb.NewDb(), + } +} + +// Copy copies the current state of the registry into its own memory space. +func (p *Registry) Copy() *Registry { + copy := &Registry{ + revTypeMap: make(map[string]*Type), + pbdb: p.pbdb.Copy(), + } + for k, v := range p.revTypeMap { + copy.revTypeMap[k] = v + } + return copy +} + +// EnumValue returns the numeric value of the given enum value name. +func (p *Registry) EnumValue(enumName string) ref.Val { + enumVal, found := p.pbdb.DescribeEnum(enumName) + if !found { + return NewErr("unknown enum name '%s'", enumName) + } + return Int(enumVal.Value()) +} + +// FindFieldType returns the field type for a checked type value. Returns false if +// the field could not be found. +// +// Deprecated: use FindStructFieldType +func (p *Registry) FindFieldType(structType, fieldName string) (*ref.FieldType, bool) { + msgType, found := p.pbdb.DescribeType(structType) + if !found { + return nil, false + } + field, found := msgType.FieldByName(fieldName) + if !found { + return nil, false + } + return &ref.FieldType{ + Type: field.CheckedType(), + IsSet: field.IsSet, + GetFrom: field.GetFrom}, true +} + +// FindStructFieldNames returns the set of field names for the given struct type, +// if the type exists in the registry. +func (p *Registry) FindStructFieldNames(structType string) ([]string, bool) { + msgType, found := p.pbdb.DescribeType(structType) + if !found { + return []string{}, false + } + fieldMap := msgType.FieldMap() + fields := make([]string, len(fieldMap)) + idx := 0 + for f := range fieldMap { + fields[idx] = f + idx++ + } + return fields, true +} + +// FindStructFieldType returns the field type for a checked type value. Returns +// false if the field could not be found. +func (p *Registry) FindStructFieldType(structType, fieldName string) (*FieldType, bool) { + msgType, found := p.pbdb.DescribeType(structType) + if !found { + return nil, false + } + field, found := msgType.FieldByName(fieldName) + if !found { + return nil, false + } + return &FieldType{ + Type: fieldDescToCELType(field), + IsSet: field.IsSet, + GetFrom: field.GetFrom}, true +} + +// FindIdent takes a qualified identifier name and returns a ref.Val if one exists. +func (p *Registry) FindIdent(identName string) (ref.Val, bool) { + if t, found := p.revTypeMap[identName]; found { + return t, true + } + if enumVal, found := p.pbdb.DescribeEnum(identName); found { + return Int(enumVal.Value()), true + } + return nil, false +} + +// FindType looks up the Type given a qualified typeName. Returns false if not found. +// +// Deprecated: use FindStructType +func (p *Registry) FindType(structType string) (*exprpb.Type, bool) { + if _, found := p.pbdb.DescribeType(structType); !found { + return nil, false + } + if structType != "" && structType[0] == '.' { + structType = structType[1:] + } + return &exprpb.Type{ + TypeKind: &exprpb.Type_Type{ + Type: &exprpb.Type{ + TypeKind: &exprpb.Type_MessageType{ + MessageType: structType}}}}, true +} + +// FindStructType returns the Type give a qualified type name. +// +// For historical reasons, only struct types are expected to be returned through this +// method, and the type values are expected to be wrapped in a TypeType instance using +// TypeTypeWithParam(). +// +// Returns false if not found. +func (p *Registry) FindStructType(structType string) (*Type, bool) { + if _, found := p.pbdb.DescribeType(structType); !found { + return nil, false + } + if structType != "" && structType[0] == '.' { + structType = structType[1:] + } + return NewTypeTypeWithParam(NewObjectType(structType)), true +} + +// NewValue creates a new type value from a qualified name and map of field +// name to value. +// +// Note, for each value, the Val.ConvertToNative function will be invoked +// to convert the Val to the field's native type. If an error occurs during +// conversion, the NewValue will be a types.Err. +func (p *Registry) NewValue(structType string, fields map[string]ref.Val) ref.Val { + td, found := p.pbdb.DescribeType(structType) + if !found { + return NewErr("unknown type '%s'", structType) + } + msg := td.New() + fieldMap := td.FieldMap() + for name, value := range fields { + field, found := fieldMap[name] + if !found { + return NewErr("no such field: %s", name) + } + err := msgSetField(msg, field, value) + if err != nil { + return &Err{error: err} + } + } + return p.NativeToValue(msg.Interface()) +} + +// RegisterDescriptor registers the contents of a protocol buffer `FileDescriptor`. +func (p *Registry) RegisterDescriptor(fileDesc protoreflect.FileDescriptor) error { + fd, err := p.pbdb.RegisterDescriptor(fileDesc) + if err != nil { + return err + } + return p.registerAllTypes(fd) +} + +// RegisterMessage registers a protocol buffer message and its dependencies. +func (p *Registry) RegisterMessage(message proto.Message) error { + fd, err := p.pbdb.RegisterMessage(message) + if err != nil { + return err + } + return p.registerAllTypes(fd) +} + +// RegisterType registers a type value with the provider which ensures the provider is aware of how to +// map the type to an identifier. +// +// If the `ref.Type` value is a `*types.Type` it will be registered directly by its runtime type name. +// If the `ref.Type` value is not a `*types.Type` instance, a `*types.Type` instance which reflects the +// traits present on the input and the runtime type name. By default this foreign type will be treated +// as a types.StructKind. To avoid potential issues where the `ref.Type` values does not match the +// generated `*types.Type` instance, consider always using the `*types.Type` to represent type extensions +// to CEL, even when they're not based on protobuf types. +func (p *Registry) RegisterType(types ...ref.Type) error { + for _, t := range types { + celType := maybeForeignType(t) + existing, found := p.revTypeMap[t.TypeName()] + if !found { + p.revTypeMap[t.TypeName()] = celType + continue + } + if !existing.IsEquivalentType(celType) { + return fmt.Errorf("type registration conflict. found: %v, input: %v", existing, celType) + } + if existing.traitMask != celType.traitMask { + return fmt.Errorf( + "type registered with conflicting traits: %v with traits %v, input: %v", + existing.TypeName(), existing.traitMask, celType.traitMask) + } + } + return nil +} + +// NativeToValue converts various "native" types to ref.Val with this specific implementation +// providing support for custom proto-based types. +// +// This method should be the inverse of ref.Val.ConvertToNative. +func (p *Registry) NativeToValue(value any) ref.Val { + if val, found := nativeToValue(p, value); found { + return val + } + switch v := value.(type) { + case proto.Message: + typeName := string(v.ProtoReflect().Descriptor().FullName()) + td, found := p.pbdb.DescribeType(typeName) + if !found { + return NewErr("unknown type: '%s'", typeName) + } + unwrapped, isUnwrapped, err := td.MaybeUnwrap(v) + if err != nil { + return UnsupportedRefValConversionErr(v) + } + if isUnwrapped { + return p.NativeToValue(unwrapped) + } + typeVal, found := p.FindIdent(typeName) + if !found { + return NewErr("unknown type: '%s'", typeName) + } + return NewObject(p, td, typeVal, v) + case *pb.Map: + return NewProtoMap(p, v) + case protoreflect.List: + return NewProtoList(p, v) + case protoreflect.Message: + return p.NativeToValue(v.Interface()) + case protoreflect.Value: + return p.NativeToValue(v.Interface()) + } + return UnsupportedRefValConversionErr(value) +} + +func (p *Registry) registerAllTypes(fd *pb.FileDescription) error { + for _, typeName := range fd.GetTypeNames() { + // skip well-known type names since they're automatically sanitized + // during NewObjectType() calls. + if _, found := checkedWellKnowns[typeName]; found { + continue + } + err := p.RegisterType(NewObjectTypeValue(typeName)) + if err != nil { + return err + } + } + return nil +} + +func fieldDescToCELType(field *pb.FieldDescription) *Type { + if field.IsMap() { + return NewMapType( + singularFieldDescToCELType(field.KeyType), + singularFieldDescToCELType(field.ValueType)) + } + if field.IsList() { + return NewListType(singularFieldDescToCELType(field)) + } + return singularFieldDescToCELType(field) +} + +func singularFieldDescToCELType(field *pb.FieldDescription) *Type { + if field.IsMessage() { + return NewObjectType(string(field.Descriptor().Message().FullName())) + } + if field.IsEnum() { + return IntType + } + return ProtoCELPrimitives[field.ProtoKind()] +} + +// defaultTypeAdapter converts go native types to CEL values. +type defaultTypeAdapter struct{} + +var ( + // DefaultTypeAdapter adapts canonical CEL types from their equivalent Go values. + DefaultTypeAdapter = &defaultTypeAdapter{} +) + +// NativeToValue implements the ref.TypeAdapter interface. +func (a *defaultTypeAdapter) NativeToValue(value any) ref.Val { + if val, found := nativeToValue(a, value); found { + return val + } + return UnsupportedRefValConversionErr(value) +} + +// nativeToValue returns the converted (ref.Val, true) of a conversion is found, +// otherwise (nil, false) +func nativeToValue(a Adapter, value any) (ref.Val, bool) { + switch v := value.(type) { + case nil: + return NullValue, true + case *Bool: + if v != nil { + return *v, true + } + case *Bytes: + if v != nil { + return *v, true + } + case *Double: + if v != nil { + return *v, true + } + case *Int: + if v != nil { + return *v, true + } + case *String: + if v != nil { + return *v, true + } + case *Uint: + if v != nil { + return *v, true + } + case bool: + return Bool(v), true + case int: + return Int(v), true + case int32: + return Int(v), true + case int64: + return Int(v), true + case uint: + return Uint(v), true + case uint32: + return Uint(v), true + case uint64: + return Uint(v), true + case float32: + return Double(v), true + case float64: + return Double(v), true + case string: + return String(v), true + case *dpb.Duration: + return Duration{Duration: v.AsDuration()}, true + case time.Duration: + return Duration{Duration: v}, true + case *tpb.Timestamp: + return Timestamp{Time: v.AsTime()}, true + case time.Time: + return Timestamp{Time: v}, true + case *bool: + if v != nil { + return Bool(*v), true + } + case *float32: + if v != nil { + return Double(*v), true + } + case *float64: + if v != nil { + return Double(*v), true + } + case *int: + if v != nil { + return Int(*v), true + } + case *int32: + if v != nil { + return Int(*v), true + } + case *int64: + if v != nil { + return Int(*v), true + } + case *string: + if v != nil { + return String(*v), true + } + case *uint: + if v != nil { + return Uint(*v), true + } + case *uint32: + if v != nil { + return Uint(*v), true + } + case *uint64: + if v != nil { + return Uint(*v), true + } + case []byte: + return Bytes(v), true + // specializations for common lists types. + case []string: + return NewStringList(a, v), true + case []ref.Val: + return NewRefValList(a, v), true + // specializations for common map types. + case map[string]string: + return NewStringStringMap(a, v), true + case map[string]any: + return NewStringInterfaceMap(a, v), true + case map[ref.Val]ref.Val: + return NewRefValMap(a, v), true + // additional specializations may be added upon request / need. + case *anypb.Any: + if v == nil { + return UnsupportedRefValConversionErr(v), true + } + unpackedAny, err := v.UnmarshalNew() + if err != nil { + return NewErr("anypb.UnmarshalNew() failed for type %q: %v", v.GetTypeUrl(), err), true + } + return a.NativeToValue(unpackedAny), true + case *structpb.NullValue, structpb.NullValue: + return NullValue, true + case *structpb.ListValue: + return NewJSONList(a, v), true + case *structpb.Struct: + return NewJSONStruct(a, v), true + case ref.Val: + return v, true + case protoreflect.EnumNumber: + return Int(v), true + case proto.Message: + if v == nil { + return UnsupportedRefValConversionErr(v), true + } + typeName := string(v.ProtoReflect().Descriptor().FullName()) + td, found := pb.DefaultDb.DescribeType(typeName) + if !found { + return nil, false + } + val, unwrapped, err := td.MaybeUnwrap(v) + if err != nil { + return UnsupportedRefValConversionErr(v), true + } + if !unwrapped { + return nil, false + } + return a.NativeToValue(val), true + // Note: dynamicpb.Message implements the proto.Message _and_ protoreflect.Message interfaces + // which means that this case must appear after handling a proto.Message type. + case protoreflect.Message: + return a.NativeToValue(v.Interface()), true + default: + refValue := reflect.ValueOf(v) + if refValue.Kind() == reflect.Ptr { + if refValue.IsNil() { + return UnsupportedRefValConversionErr(v), true + } + refValue = refValue.Elem() + } + refKind := refValue.Kind() + switch refKind { + case reflect.Array, reflect.Slice: + if refValue.Type().Elem() == reflect.TypeOf(byte(0)) { + if refValue.CanAddr() { + return Bytes(refValue.Bytes()), true + } + tmp := reflect.New(refValue.Type()) + tmp.Elem().Set(refValue) + return Bytes(tmp.Elem().Bytes()), true + } + return NewDynamicList(a, v), true + case reflect.Map: + return NewDynamicMap(a, v), true + // type aliases of primitive types cannot be asserted as that type, but rather need + // to be downcast to int32 before being converted to a CEL representation. + case reflect.Bool: + boolTupe := reflect.TypeOf(false) + return Bool(refValue.Convert(boolTupe).Interface().(bool)), true + case reflect.Int: + intType := reflect.TypeOf(int(0)) + return Int(refValue.Convert(intType).Interface().(int)), true + case reflect.Int8: + intType := reflect.TypeOf(int8(0)) + return Int(refValue.Convert(intType).Interface().(int8)), true + case reflect.Int16: + intType := reflect.TypeOf(int16(0)) + return Int(refValue.Convert(intType).Interface().(int16)), true + case reflect.Int32: + intType := reflect.TypeOf(int32(0)) + return Int(refValue.Convert(intType).Interface().(int32)), true + case reflect.Int64: + intType := reflect.TypeOf(int64(0)) + return Int(refValue.Convert(intType).Interface().(int64)), true + case reflect.Uint: + uintType := reflect.TypeOf(uint(0)) + return Uint(refValue.Convert(uintType).Interface().(uint)), true + case reflect.Uint8: + uintType := reflect.TypeOf(uint8(0)) + return Uint(refValue.Convert(uintType).Interface().(uint8)), true + case reflect.Uint16: + uintType := reflect.TypeOf(uint16(0)) + return Uint(refValue.Convert(uintType).Interface().(uint16)), true + case reflect.Uint32: + uintType := reflect.TypeOf(uint32(0)) + return Uint(refValue.Convert(uintType).Interface().(uint32)), true + case reflect.Uint64: + uintType := reflect.TypeOf(uint64(0)) + return Uint(refValue.Convert(uintType).Interface().(uint64)), true + case reflect.Float32: + doubleType := reflect.TypeOf(float32(0)) + return Double(refValue.Convert(doubleType).Interface().(float32)), true + case reflect.Float64: + doubleType := reflect.TypeOf(float64(0)) + return Double(refValue.Convert(doubleType).Interface().(float64)), true + case reflect.String: + stringType := reflect.TypeOf("") + return String(refValue.Convert(stringType).Interface().(string)), true + } + } + return nil, false +} + +func msgSetField(target protoreflect.Message, field *pb.FieldDescription, val ref.Val) error { + if field.IsList() { + lv := target.NewField(field.Descriptor()) + list, ok := val.(traits.Lister) + if !ok { + return unsupportedTypeConversionError(field, val) + } + err := msgSetListField(lv.List(), field, list) + if err != nil { + return err + } + target.Set(field.Descriptor(), lv) + return nil + } + if field.IsMap() { + mv := target.NewField(field.Descriptor()) + mp, ok := val.(traits.Mapper) + if !ok { + return unsupportedTypeConversionError(field, val) + } + err := msgSetMapField(mv.Map(), field, mp) + if err != nil { + return err + } + target.Set(field.Descriptor(), mv) + return nil + } + v, err := val.ConvertToNative(field.ReflectType()) + if err != nil { + return fieldTypeConversionError(field, err) + } + if v == nil { + return nil + } + switch pv := v.(type) { + case proto.Message: + v = pv.ProtoReflect() + } + target.Set(field.Descriptor(), protoreflect.ValueOf(v)) + return nil +} + +func msgSetListField(target protoreflect.List, listField *pb.FieldDescription, listVal traits.Lister) error { + elemReflectType := listField.ReflectType().Elem() + for i := Int(0); i < listVal.Size().(Int); i++ { + elem := listVal.Get(i) + elemVal, err := elem.ConvertToNative(elemReflectType) + if err != nil { + return fieldTypeConversionError(listField, err) + } + if elemVal == nil { + continue + } + switch ev := elemVal.(type) { + case proto.Message: + elemVal = ev.ProtoReflect() + } + target.Append(protoreflect.ValueOf(elemVal)) + } + return nil +} + +func msgSetMapField(target protoreflect.Map, mapField *pb.FieldDescription, mapVal traits.Mapper) error { + targetKeyType := mapField.KeyType.ReflectType() + targetValType := mapField.ValueType.ReflectType() + it := mapVal.Iterator() + for it.HasNext() == True { + key := it.Next() + val := mapVal.Get(key) + k, err := key.ConvertToNative(targetKeyType) + if err != nil { + return fieldTypeConversionError(mapField, err) + } + v, err := val.ConvertToNative(targetValType) + if err != nil { + return fieldTypeConversionError(mapField, err) + } + if v == nil { + continue + } + switch pv := v.(type) { + case proto.Message: + v = pv.ProtoReflect() + } + target.Set(protoreflect.ValueOf(k).MapKey(), protoreflect.ValueOf(v)) + } + return nil +} + +func unsupportedTypeConversionError(field *pb.FieldDescription, val ref.Val) error { + msgName := field.Descriptor().ContainingMessage().FullName() + return fmt.Errorf("unsupported field type for %v.%v: %v", msgName, field.Name(), val.Type()) +} + +func fieldTypeConversionError(field *pb.FieldDescription, err error) error { + msgName := field.Descriptor().ContainingMessage().FullName() + return fmt.Errorf("field type conversion error for %v.%v value type: %v", msgName, field.Name(), err) +} + +var ( + // ProtoCELPrimitives provides a map from the protoreflect Kind to the equivalent CEL type. + ProtoCELPrimitives = map[protoreflect.Kind]*Type{ + protoreflect.BoolKind: BoolType, + protoreflect.BytesKind: BytesType, + protoreflect.DoubleKind: DoubleType, + protoreflect.FloatKind: DoubleType, + protoreflect.Int32Kind: IntType, + protoreflect.Int64Kind: IntType, + protoreflect.Sint32Kind: IntType, + protoreflect.Sint64Kind: IntType, + protoreflect.Uint32Kind: UintType, + protoreflect.Uint64Kind: UintType, + protoreflect.Fixed32Kind: UintType, + protoreflect.Fixed64Kind: UintType, + protoreflect.Sfixed32Kind: IntType, + protoreflect.Sfixed64Kind: IntType, + protoreflect.StringKind: StringType, + } +) diff --git a/vendor/github.com/google/cel-go/common/types/ref/BUILD.bazel b/vendor/github.com/google/cel-go/common/types/ref/BUILD.bazel new file mode 100644 index 0000000000..79330c3321 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/ref/BUILD.bazel @@ -0,0 +1,20 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "provider.go", + "reference.go", + ], + importpath = "github.com/google/cel-go/common/types/ref", + deps = [ + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//reflect/protoreflect:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/types/ref/provider.go b/vendor/github.com/google/cel-go/common/types/ref/provider.go new file mode 100644 index 0000000000..b9820023d6 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/ref/provider.go @@ -0,0 +1,102 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package ref + +import ( + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +// TypeProvider specifies functions for creating new object instances and for +// resolving enum values by name. +// +// Deprecated: use types.Provider +type TypeProvider interface { + // EnumValue returns the numeric value of the given enum value name. + EnumValue(enumName string) Val + + // FindIdent takes a qualified identifier name and returns a Value if one exists. + FindIdent(identName string) (Val, bool) + + // FindType looks up the Type given a qualified typeName. Returns false if not found. + FindType(typeName string) (*exprpb.Type, bool) + + // FieldFieldType returns the field type for a checked type value. Returns false if + // the field could not be found. + FindFieldType(messageType, fieldName string) (*FieldType, bool) + + // NewValue creates a new type value from a qualified name and map of field name + // to value. + // + // Note, for each value, the Val.ConvertToNative function will be invoked to convert + // the Val to the field's native type. If an error occurs during conversion, the + // NewValue will be a types.Err. + NewValue(typeName string, fields map[string]Val) Val +} + +// TypeAdapter converts native Go values of varying type and complexity to equivalent CEL values. +// +// Deprecated: use types.Adapter +type TypeAdapter interface { + // NativeToValue converts the input `value` to a CEL `ref.Val`. + NativeToValue(value any) Val +} + +// TypeRegistry allows third-parties to add custom types to CEL. Not all `TypeProvider` +// implementations support type-customization, so these features are optional. However, a +// `TypeRegistry` should be a `TypeProvider` and a `TypeAdapter` to ensure that types +// which are registered can be converted to CEL representations. +// +// Deprecated: use types.Registry +type TypeRegistry interface { + TypeAdapter + TypeProvider + + // RegisterDescriptor registers the contents of a protocol buffer `FileDescriptor`. + RegisterDescriptor(fileDesc protoreflect.FileDescriptor) error + + // RegisterMessage registers a protocol buffer message and its dependencies. + RegisterMessage(message proto.Message) error + + // RegisterType registers a type value with the provider which ensures the + // provider is aware of how to map the type to an identifier. + // + // If a type is provided more than once with an alternative definition, the + // call will result in an error. + RegisterType(types ...Type) error +} + +// FieldType represents a field's type value and whether that field supports +// presence detection. +// +// Deprecated: use types.FieldType +type FieldType struct { + // Type of the field as a protobuf type value. + Type *exprpb.Type + + // IsSet indicates whether the field is set on an input object. + IsSet FieldTester + + // GetFrom retrieves the field value on the input object, if set. + GetFrom FieldGetter +} + +// FieldTester is used to test field presence on an input object. +type FieldTester func(target any) bool + +// FieldGetter is used to get the field value from an input object, if set. +type FieldGetter func(target any) (any, error) diff --git a/vendor/github.com/google/cel-go/common/types/ref/reference.go b/vendor/github.com/google/cel-go/common/types/ref/reference.go new file mode 100644 index 0000000000..e0d58145cd --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/ref/reference.go @@ -0,0 +1,63 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package ref contains the reference interfaces used throughout the types components. +package ref + +import ( + "reflect" +) + +// Type interface indicate the name of a given type. +type Type interface { + // HasTrait returns whether the type has a given trait associated with it. + // + // See common/types/traits/traits.go for a list of supported traits. + HasTrait(trait int) bool + + // TypeName returns the qualified type name of the type. + // + // The type name is also used as the type's identifier name at type-check and interpretation time. + TypeName() string +} + +// Val interface defines the functions supported by all expression values. +// Val implementations may specialize the behavior of the value through the addition of traits. +type Val interface { + // ConvertToNative converts the Value to a native Go struct according to the + // reflected type description, or error if the conversion is not feasible. + // + // The ConvertToNative method is intended to be used to support conversion between CEL types + // and native types during object creation expressions or by clients who need to adapt the, + // returned CEL value into an equivalent Go value instance. + // + // When implementing or using ConvertToNative, the following guidelines apply: + // - Use ConvertToNative when marshalling CEL evaluation results to native types. + // - Do not use ConvertToNative within CEL extension functions. + // - Document whether your implementation supports non-CEL field types, such as Go or Protobuf. + ConvertToNative(typeDesc reflect.Type) (any, error) + + // ConvertToType supports type conversions between CEL value types supported by the expression language. + ConvertToType(typeValue Type) Val + + // Equal returns true if the `other` value has the same type and content as the implementing struct. + Equal(other Val) Val + + // Type returns the TypeValue of the value. + Type() Type + + // Value returns the raw value of the instance which may not be directly compatible with the expression + // language types. + Value() any +} diff --git a/vendor/github.com/google/cel-go/common/types/string.go b/vendor/github.com/google/cel-go/common/types/string.go new file mode 100644 index 0000000000..8aad4701cc --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/string.go @@ -0,0 +1,230 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "regexp" + "strconv" + "strings" + "time" + + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// String type implementation which supports addition, comparison, matching, +// and size functions. +type String string + +var ( + stringOneArgOverloads = map[string]func(ref.Val, ref.Val) ref.Val{ + overloads.Contains: StringContains, + overloads.EndsWith: StringEndsWith, + overloads.StartsWith: StringStartsWith, + } + + stringWrapperType = reflect.TypeOf(&wrapperspb.StringValue{}) +) + +// Add implements traits.Adder.Add. +func (s String) Add(other ref.Val) ref.Val { + otherString, ok := other.(String) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + return s + otherString +} + +// Compare implements traits.Comparer.Compare. +func (s String) Compare(other ref.Val) ref.Val { + otherString, ok := other.(String) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + return Int(strings.Compare(s.Value().(string), otherString.Value().(string))) +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (s String) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.String: + return reflect.ValueOf(s).Convert(typeDesc).Interface(), nil + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Primitives must be wrapped before being set on an Any field. + return anypb.New(wrapperspb.String(string(s))) + case jsonValueType: + // Convert to a protobuf representation of a JSON String. + return structpb.NewStringValue(string(s)), nil + case stringWrapperType: + // Convert to a wrapperspb.StringValue. + return wrapperspb.String(string(s)), nil + } + if typeDesc.Elem().Kind() == reflect.String { + p := s.Value().(string) + return &p, nil + } + case reflect.Interface: + sv := s.Value() + if reflect.TypeOf(sv).Implements(typeDesc) { + return sv, nil + } + if reflect.TypeOf(s).Implements(typeDesc) { + return s, nil + } + } + return nil, fmt.Errorf( + "unsupported native conversion from string to '%v'", typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (s String) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case IntType: + if n, err := strconv.ParseInt(s.Value().(string), 10, 64); err == nil { + return Int(n) + } + case UintType: + if n, err := strconv.ParseUint(s.Value().(string), 10, 64); err == nil { + return Uint(n) + } + case DoubleType: + if n, err := strconv.ParseFloat(s.Value().(string), 64); err == nil { + return Double(n) + } + case BoolType: + if b, err := strconv.ParseBool(s.Value().(string)); err == nil { + return Bool(b) + } + case BytesType: + return Bytes(s) + case DurationType: + if d, err := time.ParseDuration(s.Value().(string)); err == nil { + return durationOf(d) + } + case TimestampType: + if t, err := time.Parse(time.RFC3339, s.Value().(string)); err == nil { + if t.Unix() < minUnixTime || t.Unix() > maxUnixTime { + return celErrTimestampOverflow + } + return timestampOf(t) + } + case StringType: + return s + case TypeType: + return StringType + } + return NewErr("type conversion error from '%s' to '%s'", StringType, typeVal) +} + +// Equal implements ref.Val.Equal. +func (s String) Equal(other ref.Val) ref.Val { + otherString, ok := other.(String) + return Bool(ok && s == otherString) +} + +// IsZeroValue returns true if the string is empty. +func (s String) IsZeroValue() bool { + return len(s) == 0 +} + +// Match implements traits.Matcher.Match. +func (s String) Match(pattern ref.Val) ref.Val { + pat, ok := pattern.(String) + if !ok { + return MaybeNoSuchOverloadErr(pattern) + } + matched, err := regexp.MatchString(pat.Value().(string), s.Value().(string)) + if err != nil { + return &Err{error: err} + } + return Bool(matched) +} + +// Receive implements traits.Receiver.Receive. +func (s String) Receive(function string, overload string, args []ref.Val) ref.Val { + switch len(args) { + case 1: + if f, found := stringOneArgOverloads[function]; found { + return f(s, args[0]) + } + } + return NoSuchOverloadErr() +} + +// Size implements traits.Sizer.Size. +func (s String) Size() ref.Val { + return Int(len([]rune(s.Value().(string)))) +} + +// Type implements ref.Val.Type. +func (s String) Type() ref.Type { + return StringType +} + +// Value implements ref.Val.Value. +func (s String) Value() any { + return string(s) +} + +func (s String) format(sb *strings.Builder) { + sb.WriteString(strconv.Quote(string(s))) +} + +// StringContains returns whether the string contains a substring. +func StringContains(s, sub ref.Val) ref.Val { + str, ok := s.(String) + if !ok { + return MaybeNoSuchOverloadErr(s) + } + subStr, ok := sub.(String) + if !ok { + return MaybeNoSuchOverloadErr(sub) + } + return Bool(strings.Contains(string(str), string(subStr))) +} + +// StringEndsWith returns whether the target string contains the input suffix. +func StringEndsWith(s, suf ref.Val) ref.Val { + str, ok := s.(String) + if !ok { + return MaybeNoSuchOverloadErr(s) + } + sufStr, ok := suf.(String) + if !ok { + return MaybeNoSuchOverloadErr(suf) + } + return Bool(strings.HasSuffix(string(str), string(sufStr))) +} + +// StringStartsWith returns whether the target string contains the input prefix. +func StringStartsWith(s, pre ref.Val) ref.Val { + str, ok := s.(String) + if !ok { + return MaybeNoSuchOverloadErr(s) + } + preStr, ok := pre.(String) + if !ok { + return MaybeNoSuchOverloadErr(pre) + } + return Bool(strings.HasPrefix(string(str), string(preStr))) +} diff --git a/vendor/github.com/google/cel-go/common/types/timestamp.go b/vendor/github.com/google/cel-go/common/types/timestamp.go new file mode 100644 index 0000000000..f7be585916 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/timestamp.go @@ -0,0 +1,315 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "strconv" + "strings" + "time" + + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + tpb "google.golang.org/protobuf/types/known/timestamppb" +) + +// Timestamp type implementation which supports add, compare, and subtract +// operations. Timestamps are also capable of participating in dynamic +// function dispatch to instance methods. +type Timestamp struct { + time.Time +} + +func timestampOf(t time.Time) Timestamp { + // Note that this function does not validate that time.Time is in our supported range. + return Timestamp{Time: t} +} + +const ( + // The number of seconds between year 1 and year 1970. This is borrowed from + // https://golang.org/src/time/time.go. + unixToInternal int64 = (1969*365 + 1969/4 - 1969/100 + 1969/400) * (60 * 60 * 24) + + // Number of seconds between `0001-01-01T00:00:00Z` and the Unix epoch. + minUnixTime int64 = -62135596800 + // Number of seconds between `9999-12-31T23:59:59.999999999Z` and the Unix epoch. + maxUnixTime int64 = 253402300799 +) + +// Add implements traits.Adder.Add. +func (t Timestamp) Add(other ref.Val) ref.Val { + switch other.Type() { + case DurationType: + return other.(Duration).Add(t) + } + return MaybeNoSuchOverloadErr(other) +} + +// Compare implements traits.Comparer.Compare. +func (t Timestamp) Compare(other ref.Val) ref.Val { + if TimestampType != other.Type() { + return MaybeNoSuchOverloadErr(other) + } + ts1 := t.Time + ts2 := other.(Timestamp).Time + switch { + case ts1.Before(ts2): + return IntNegOne + case ts1.After(ts2): + return IntOne + default: + return IntZero + } +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (t Timestamp) ConvertToNative(typeDesc reflect.Type) (any, error) { + // If the timestamp is already assignable to the desired type return it. + if reflect.TypeOf(t.Time).AssignableTo(typeDesc) { + return t.Time, nil + } + if reflect.TypeOf(t).AssignableTo(typeDesc) { + return t, nil + } + switch typeDesc { + case anyValueType: + // Pack the underlying time as a tpb.Timestamp into an Any value. + return anypb.New(tpb.New(t.Time)) + case jsonValueType: + // CEL follows the proto3 to JSON conversion which formats as an RFC 3339 encoded JSON + // string. + v := t.ConvertToType(StringType) + if IsError(v) { + return nil, v.(*Err) + } + return structpb.NewStringValue(string(v.(String))), nil + case timestampValueType: + // Unwrap the underlying tpb.Timestamp. + return tpb.New(t.Time), nil + } + return nil, fmt.Errorf("type conversion error from 'Timestamp' to '%v'", typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (t Timestamp) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case StringType: + return String(t.Format(time.RFC3339Nano)) + case IntType: + // Return the Unix time in seconds since 1970 + return Int(t.Unix()) + case TimestampType: + return t + case TypeType: + return TimestampType + } + return NewErr("type conversion error from '%s' to '%s'", TimestampType, typeVal) +} + +// Equal implements ref.Val.Equal. +func (t Timestamp) Equal(other ref.Val) ref.Val { + otherTime, ok := other.(Timestamp) + return Bool(ok && t.Time.Equal(otherTime.Time)) +} + +// IsZeroValue returns true if the timestamp is epoch 0. +func (t Timestamp) IsZeroValue() bool { + return t.IsZero() +} + +// Receive implements traits.Receiver.Receive. +func (t Timestamp) Receive(function string, overload string, args []ref.Val) ref.Val { + switch len(args) { + case 0: + if f, found := timestampZeroArgOverloads[function]; found { + return f(t.Time) + } + case 1: + if f, found := timestampOneArgOverloads[function]; found { + return f(t.Time, args[0]) + } + } + return NoSuchOverloadErr() +} + +// Subtract implements traits.Subtractor.Subtract. +func (t Timestamp) Subtract(subtrahend ref.Val) ref.Val { + switch subtrahend.Type() { + case DurationType: + dur := subtrahend.(Duration) + val, err := subtractTimeDurationChecked(t.Time, dur.Duration) + if err != nil { + return WrapErr(err) + } + return timestampOf(val) + case TimestampType: + t2 := subtrahend.(Timestamp).Time + val, err := subtractTimeChecked(t.Time, t2) + if err != nil { + return WrapErr(err) + } + return durationOf(val) + } + return MaybeNoSuchOverloadErr(subtrahend) +} + +// Type implements ref.Val.Type. +func (t Timestamp) Type() ref.Type { + return TimestampType +} + +// Value implements ref.Val.Value. +func (t Timestamp) Value() any { + return t.Time +} + +func (t Timestamp) format(sb *strings.Builder) { + fmt.Fprintf(sb, `timestamp("%s")`, t.Time.UTC().Format(time.RFC3339Nano)) +} + +var ( + timestampValueType = reflect.TypeOf(&tpb.Timestamp{}) + + timestampZeroArgOverloads = map[string]func(time.Time) ref.Val{ + overloads.TimeGetFullYear: timestampGetFullYear, + overloads.TimeGetMonth: timestampGetMonth, + overloads.TimeGetDayOfYear: timestampGetDayOfYear, + overloads.TimeGetDate: timestampGetDayOfMonthOneBased, + overloads.TimeGetDayOfMonth: timestampGetDayOfMonthZeroBased, + overloads.TimeGetDayOfWeek: timestampGetDayOfWeek, + overloads.TimeGetHours: timestampGetHours, + overloads.TimeGetMinutes: timestampGetMinutes, + overloads.TimeGetSeconds: timestampGetSeconds, + overloads.TimeGetMilliseconds: timestampGetMilliseconds} + + timestampOneArgOverloads = map[string]func(time.Time, ref.Val) ref.Val{ + overloads.TimeGetFullYear: timestampGetFullYearWithTz, + overloads.TimeGetMonth: timestampGetMonthWithTz, + overloads.TimeGetDayOfYear: timestampGetDayOfYearWithTz, + overloads.TimeGetDate: timestampGetDayOfMonthOneBasedWithTz, + overloads.TimeGetDayOfMonth: timestampGetDayOfMonthZeroBasedWithTz, + overloads.TimeGetDayOfWeek: timestampGetDayOfWeekWithTz, + overloads.TimeGetHours: timestampGetHoursWithTz, + overloads.TimeGetMinutes: timestampGetMinutesWithTz, + overloads.TimeGetSeconds: timestampGetSecondsWithTz, + overloads.TimeGetMilliseconds: timestampGetMillisecondsWithTz} +) + +type timestampVisitor func(time.Time) ref.Val + +func timestampGetFullYear(t time.Time) ref.Val { + return Int(t.Year()) +} +func timestampGetMonth(t time.Time) ref.Val { + // CEL spec indicates that the month should be 0-based, but the Time value + // for Month() is 1-based. + return Int(t.Month() - 1) +} +func timestampGetDayOfYear(t time.Time) ref.Val { + return Int(t.YearDay() - 1) +} +func timestampGetDayOfMonthZeroBased(t time.Time) ref.Val { + return Int(t.Day() - 1) +} +func timestampGetDayOfMonthOneBased(t time.Time) ref.Val { + return Int(t.Day()) +} +func timestampGetDayOfWeek(t time.Time) ref.Val { + return Int(t.Weekday()) +} +func timestampGetHours(t time.Time) ref.Val { + return Int(t.Hour()) +} +func timestampGetMinutes(t time.Time) ref.Val { + return Int(t.Minute()) +} +func timestampGetSeconds(t time.Time) ref.Val { + return Int(t.Second()) +} +func timestampGetMilliseconds(t time.Time) ref.Val { + return Int(t.Nanosecond() / 1000000) +} + +func timestampGetFullYearWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetFullYear)(t) +} +func timestampGetMonthWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetMonth)(t) +} +func timestampGetDayOfYearWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetDayOfYear)(t) +} +func timestampGetDayOfMonthZeroBasedWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetDayOfMonthZeroBased)(t) +} +func timestampGetDayOfMonthOneBasedWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetDayOfMonthOneBased)(t) +} +func timestampGetDayOfWeekWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetDayOfWeek)(t) +} +func timestampGetHoursWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetHours)(t) +} +func timestampGetMinutesWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetMinutes)(t) +} +func timestampGetSecondsWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetSeconds)(t) +} +func timestampGetMillisecondsWithTz(t time.Time, tz ref.Val) ref.Val { + return timeZone(tz, timestampGetMilliseconds)(t) +} + +func timeZone(tz ref.Val, visitor timestampVisitor) timestampVisitor { + return func(t time.Time) ref.Val { + if StringType != tz.Type() { + return MaybeNoSuchOverloadErr(tz) + } + val := string(tz.(String)) + ind := strings.Index(val, ":") + if ind == -1 { + loc, err := time.LoadLocation(val) + if err != nil { + return WrapErr(err) + } + return visitor(t.In(loc)) + } + + // If the input is not the name of a timezone (for example, 'US/Central'), it should be a numerical offset from UTC + // in the format ^(+|-)(0[0-9]|1[0-4]):[0-5][0-9]$. The numerical input is parsed in terms of hours and minutes. + hr, err := strconv.Atoi(string(val[0:ind])) + if err != nil { + return WrapErr(err) + } + min, err := strconv.Atoi(string(val[ind+1:])) + if err != nil { + return WrapErr(err) + } + var offset int + if string(val[0]) == "-" { + offset = hr*60 - min + } else { + offset = hr*60 + min + } + secondsEastOfUTC := int((time.Duration(offset) * time.Minute).Seconds()) + timezone := time.FixedZone("", secondsEastOfUTC) + return visitor(t.In(timezone)) + } +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/BUILD.bazel b/vendor/github.com/google/cel-go/common/types/traits/BUILD.bazel new file mode 100644 index 0000000000..b19eb8301e --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/BUILD.bazel @@ -0,0 +1,29 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "comparer.go", + "container.go", + "field_tester.go", + "indexer.go", + "iterator.go", + "lister.go", + "mapper.go", + "matcher.go", + "math.go", + "receiver.go", + "sizer.go", + "traits.go", + "zeroer.go", + ], + importpath = "github.com/google/cel-go/common/types/traits", + deps = [ + "//common/types/ref:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/common/types/traits/comparer.go b/vendor/github.com/google/cel-go/common/types/traits/comparer.go new file mode 100644 index 0000000000..b531d9ae2b --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/comparer.go @@ -0,0 +1,33 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// Comparer interface for ordering comparisons between values in order to +// support '<', '<=', '>=', '>' overloads. +type Comparer interface { + // Compare this value to the input other value, returning an Int: + // + // this < other -> Int(-1) + // this == other -> Int(0) + // this > other -> Int(1) + // + // If the comparison cannot be made or is not supported, an error should + // be returned. + Compare(other ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/container.go b/vendor/github.com/google/cel-go/common/types/traits/container.go new file mode 100644 index 0000000000..cf5c621ae9 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/container.go @@ -0,0 +1,23 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import "github.com/google/cel-go/common/types/ref" + +// Container interface which permits containment tests such as 'a in b'. +type Container interface { + // Contains returns true if the value exists within the object. + Contains(value ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/field_tester.go b/vendor/github.com/google/cel-go/common/types/traits/field_tester.go new file mode 100644 index 0000000000..816a956523 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/field_tester.go @@ -0,0 +1,30 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// FieldTester indicates if a defined field on an object type is set to a +// non-default value. +// +// For use with the `has()` macro. +type FieldTester interface { + // IsSet returns true if the field is defined and set to a non-default + // value. The method will return false if defined and not set, and an error + // if the field is not defined. + IsSet(field ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/indexer.go b/vendor/github.com/google/cel-go/common/types/traits/indexer.go new file mode 100644 index 0000000000..662c6836c3 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/indexer.go @@ -0,0 +1,25 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// Indexer permits random access of elements by index 'a[b()]'. +type Indexer interface { + // Get the value at the specified index or error. + Get(index ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/iterator.go b/vendor/github.com/google/cel-go/common/types/traits/iterator.go new file mode 100644 index 0000000000..91c10f08fc --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/iterator.go @@ -0,0 +1,49 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// Iterable aggregate types permit traversal over their elements. +type Iterable interface { + // Iterator returns a new iterator view of the struct. + Iterator() Iterator +} + +// Iterator permits safe traversal over the contents of an aggregate type. +type Iterator interface { + ref.Val + + // HasNext returns true if there are unvisited elements in the Iterator. + HasNext() ref.Val + + // Next returns the next element. + Next() ref.Val +} + +// Foldable aggregate types support iteration over (key, value) or (index, value) pairs. +type Foldable interface { + // Fold invokes the Folder.FoldEntry for all entries in the type + Fold(Folder) +} + +// Folder performs a fold on a given entry and indicates whether to continue folding. +type Folder interface { + // FoldEntry indicates the key, value pair associated with the entry. + // If the output is true, continue folding. Otherwise, terminate the fold. + FoldEntry(key, val any) bool +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/lister.go b/vendor/github.com/google/cel-go/common/types/traits/lister.go new file mode 100644 index 0000000000..e54781a602 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/lister.go @@ -0,0 +1,36 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import "github.com/google/cel-go/common/types/ref" + +// Lister interface which aggregates the traits of a list. +type Lister interface { + ref.Val + Adder + Container + Indexer + Iterable + Sizer +} + +// MutableLister interface which emits an immutable result after an intermediate computation. +// +// Note, this interface is intended only to be used within Comprehensions where the mutable +// value is not directly observable within the user-authored CEL expression. +type MutableLister interface { + Lister + ToImmutableList() Lister +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/mapper.go b/vendor/github.com/google/cel-go/common/types/traits/mapper.go new file mode 100644 index 0000000000..d13333f3f6 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/mapper.go @@ -0,0 +1,48 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import "github.com/google/cel-go/common/types/ref" + +// Mapper interface which aggregates the traits of a maps. +type Mapper interface { + ref.Val + Container + Indexer + Iterable + Sizer + + // Find returns a value, if one exists, for the input key. + // + // If the key is not found the function returns (nil, false). + // If the input key is not valid for the map, or is Err or Unknown the function returns + // (Unknown|Err, false). + Find(key ref.Val) (ref.Val, bool) +} + +// MutableMapper interface which emits an immutable result after an intermediate computation. +// +// Note, this interface is intended only to be used within Comprehensions where the mutable +// value is not directly observable within the user-authored CEL expression. +type MutableMapper interface { + Mapper + + // Insert a key, value pair into the map, returning the map if the insert is successful + // and an error if key already exists in the mutable map. + Insert(k, v ref.Val) ref.Val + + // ToImmutableMap converts a mutable map into an immutable map. + ToImmutableMap() Mapper +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/matcher.go b/vendor/github.com/google/cel-go/common/types/traits/matcher.go new file mode 100644 index 0000000000..085dc94ff4 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/matcher.go @@ -0,0 +1,23 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import "github.com/google/cel-go/common/types/ref" + +// Matcher interface for supporting 'matches()' overloads. +type Matcher interface { + // Match returns true if the pattern matches the current value. + Match(pattern ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/math.go b/vendor/github.com/google/cel-go/common/types/traits/math.go new file mode 100644 index 0000000000..86d5b9137e --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/math.go @@ -0,0 +1,62 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import "github.com/google/cel-go/common/types/ref" + +// Adder interface to support '+' operator overloads. +type Adder interface { + // Add returns a combination of the current value and other value. + // + // If the other value is an unsupported type, an error is returned. + Add(other ref.Val) ref.Val +} + +// Divider interface to support '/' operator overloads. +type Divider interface { + // Divide returns the result of dividing the current value by the input + // denominator. + // + // A denominator value of zero results in an error. + Divide(denominator ref.Val) ref.Val +} + +// Modder interface to support '%' operator overloads. +type Modder interface { + // Modulo returns the result of taking the modulus of the current value + // by the denominator. + // + // A denominator value of zero results in an error. + Modulo(denominator ref.Val) ref.Val +} + +// Multiplier interface to support '*' operator overloads. +type Multiplier interface { + // Multiply returns the result of multiplying the current and input value. + Multiply(other ref.Val) ref.Val +} + +// Negater interface to support unary '-' and '!' operator overloads. +type Negater interface { + // Negate returns the complement of the current value. + Negate() ref.Val +} + +// Subtractor interface to support binary '-' operator overloads. +type Subtractor interface { + // Subtract returns the result of subtracting the input from the current + // value. + Subtract(subtrahend ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/receiver.go b/vendor/github.com/google/cel-go/common/types/traits/receiver.go new file mode 100644 index 0000000000..8f41db45e8 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/receiver.go @@ -0,0 +1,24 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import "github.com/google/cel-go/common/types/ref" + +// Receiver interface for routing instance method calls within a value. +type Receiver interface { + // Receive accepts a function name, overload id, and arguments and returns + // a value. + Receive(function string, overload string, args []ref.Val) ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/sizer.go b/vendor/github.com/google/cel-go/common/types/traits/sizer.go new file mode 100644 index 0000000000..b80d25137a --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/sizer.go @@ -0,0 +1,25 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// Sizer interface for supporting 'size()' overloads. +type Sizer interface { + // Size returns the number of elements or length of the value. + Size() ref.Val +} diff --git a/vendor/github.com/google/cel-go/common/types/traits/traits.go b/vendor/github.com/google/cel-go/common/types/traits/traits.go new file mode 100644 index 0000000000..51a09df564 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/traits.go @@ -0,0 +1,79 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package traits defines interfaces that a type may implement to participate +// in operator overloads and function dispatch. +package traits + +const ( + // AdderType types provide a '+' operator overload. + AdderType = 1 << iota + + // ComparerType types support ordering comparisons '<', '<=', '>', '>='. + ComparerType + + // ContainerType types support 'in' operations. + ContainerType + + // DividerType types support '/' operations. + DividerType + + // FieldTesterType types support the detection of field value presence. + FieldTesterType + + // IndexerType types support index access with dynamic values. + IndexerType + + // IterableType types can be iterated over in comprehensions. + IterableType + + // IteratorType types support iterator semantics. + IteratorType + + // MatcherType types support pattern matching via 'matches' method. + MatcherType + + // ModderType types support modulus operations '%' + ModderType + + // MultiplierType types support '*' operations. + MultiplierType + + // NegatorType types support either negation via '!' or '-' + NegatorType + + // ReceiverType types support dynamic dispatch to instance methods. + ReceiverType + + // SizerType types support the size() method. + SizerType + + // SubtractorType types support '-' operations. + SubtractorType + + // FoldableType types support comprehensions v2 macros which iterate over (key, value) pairs. + FoldableType +) + +const ( + // ListerType supports a set of traits necessary for list operations. + // + // The ListerType is syntactic sugar and not intended to be a perfect reflection of all List operators. + ListerType = AdderType | ContainerType | IndexerType | IterableType | SizerType + + // MapperType supports a set of traits necessary for map operations. + // + // The MapperType is syntactic sugar and not intended to be a perfect reflection of all Map operators. + MapperType = ContainerType | IndexerType | IterableType | SizerType +) diff --git a/vendor/github.com/google/cel-go/common/types/traits/zeroer.go b/vendor/github.com/google/cel-go/common/types/traits/zeroer.go new file mode 100644 index 0000000000..0b7c830a24 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/traits/zeroer.go @@ -0,0 +1,21 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package traits + +// Zeroer interface for testing whether a CEL value is a zero value for its type. +type Zeroer interface { + // IsZeroValue indicates whether the object is the zero value for the type. + IsZeroValue() bool +} diff --git a/vendor/github.com/google/cel-go/common/types/types.go b/vendor/github.com/google/cel-go/common/types/types.go new file mode 100644 index 0000000000..78c77a9b5d --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/types.go @@ -0,0 +1,884 @@ +// Copyright 2023 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "reflect" + "strings" + + "google.golang.org/protobuf/proto" + + chkdecls "github.com/google/cel-go/checker/decls" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" + + celpb "cel.dev/expr" + exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1" +) + +// Kind indicates a CEL type's kind which is used to differentiate quickly between simple +// and complex types. +type Kind uint + +const ( + // UnspecifiedKind is returned when the type is nil or its kind is not specified. + UnspecifiedKind Kind = iota + + // DynKind represents a dynamic type. This kind only exists at type-check time. + DynKind + + // AnyKind represents a google.protobuf.Any type. This kind only exists at type-check time. + // Prefer DynKind to AnyKind as AnyKind has a specific meaning which is based on protobuf + // well-known types. + AnyKind + + // BoolKind represents a boolean type. + BoolKind + + // BytesKind represents a bytes type. + BytesKind + + // DoubleKind represents a double type. + DoubleKind + + // DurationKind represents a CEL duration type. + DurationKind + + // ErrorKind represents a CEL error type. + ErrorKind + + // IntKind represents an integer type. + IntKind + + // ListKind represents a list type. + ListKind + + // MapKind represents a map type. + MapKind + + // NullTypeKind represents a null type. + NullTypeKind + + // OpaqueKind represents an abstract type which has no accessible fields. + OpaqueKind + + // StringKind represents a string type. + StringKind + + // StructKind represents a structured object with typed fields. + StructKind + + // TimestampKind represents a a CEL time type. + TimestampKind + + // TypeKind represents the CEL type. + TypeKind + + // TypeParamKind represents a parameterized type whose type name will be resolved at type-check time, if possible. + TypeParamKind + + // UintKind represents a uint type. + UintKind + + // UnknownKind represents an unknown value type. + UnknownKind +) + +var ( + // AnyType represents the google.protobuf.Any type. + AnyType = &Type{ + kind: AnyKind, + runtimeTypeName: "google.protobuf.Any", + traitMask: traits.FieldTesterType | + traits.IndexerType, + } + // BoolType represents the bool type. + BoolType = &Type{ + kind: BoolKind, + runtimeTypeName: "bool", + traitMask: traits.ComparerType | + traits.NegatorType, + } + // BytesType represents the bytes type. + BytesType = &Type{ + kind: BytesKind, + runtimeTypeName: "bytes", + traitMask: traits.AdderType | + traits.ComparerType | + traits.SizerType, + } + // DoubleType represents the double type. + DoubleType = &Type{ + kind: DoubleKind, + runtimeTypeName: "double", + traitMask: traits.AdderType | + traits.ComparerType | + traits.DividerType | + traits.MultiplierType | + traits.NegatorType | + traits.SubtractorType, + } + // DurationType represents the CEL duration type. + DurationType = &Type{ + kind: DurationKind, + runtimeTypeName: "google.protobuf.Duration", + traitMask: traits.AdderType | + traits.ComparerType | + traits.NegatorType | + traits.ReceiverType | + traits.SubtractorType, + } + // DynType represents a dynamic CEL type whose type will be determined at runtime from context. + DynType = &Type{ + kind: DynKind, + runtimeTypeName: "dyn", + } + // ErrorType represents a CEL error value. + ErrorType = &Type{ + kind: ErrorKind, + runtimeTypeName: "error", + } + // IntType represents the int type. + IntType = &Type{ + kind: IntKind, + runtimeTypeName: "int", + traitMask: traits.AdderType | + traits.ComparerType | + traits.DividerType | + traits.ModderType | + traits.MultiplierType | + traits.NegatorType | + traits.SubtractorType, + } + // ListType represents the runtime list type. + ListType = NewListType(DynType) + // MapType represents the runtime map type. + MapType = NewMapType(DynType, DynType) + // NullType represents the type of a null value. + NullType = &Type{ + kind: NullTypeKind, + runtimeTypeName: "null_type", + } + // StringType represents the string type. + StringType = &Type{ + kind: StringKind, + runtimeTypeName: "string", + traitMask: traits.AdderType | + traits.ComparerType | + traits.MatcherType | + traits.ReceiverType | + traits.SizerType, + } + // TimestampType represents the time type. + TimestampType = &Type{ + kind: TimestampKind, + runtimeTypeName: "google.protobuf.Timestamp", + traitMask: traits.AdderType | + traits.ComparerType | + traits.ReceiverType | + traits.SubtractorType, + } + // TypeType represents a CEL type + TypeType = &Type{ + kind: TypeKind, + runtimeTypeName: "type", + } + // UintType represents a uint type. + UintType = &Type{ + kind: UintKind, + runtimeTypeName: "uint", + traitMask: traits.AdderType | + traits.ComparerType | + traits.DividerType | + traits.ModderType | + traits.MultiplierType | + traits.SubtractorType, + } + // UnknownType represents an unknown value type. + UnknownType = &Type{ + kind: UnknownKind, + runtimeTypeName: "unknown", + } +) + +var _ ref.Type = &Type{} +var _ ref.Val = &Type{} + +// Type holds a reference to a runtime type with an optional type-checked set of type parameters. +type Type struct { + // kind indicates general category of the type. + kind Kind + + // parameters holds the optional type-checked set of type Parameters that are used during static analysis. + parameters []*Type + + // runtimeTypeName indicates the runtime type name of the type. + runtimeTypeName string + + // isAssignableType function determines whether one type is assignable to this type. + // A nil value for the isAssignableType function falls back to equality of kind, runtimeType, and parameters. + isAssignableType func(other *Type) bool + + // isAssignableRuntimeType function determines whether the runtime type (with erasure) is assignable to this type. + // A nil value for the isAssignableRuntimeType function falls back to the equality of the type or type name. + isAssignableRuntimeType func(other ref.Val) bool + + // traitMask is a mask of flags which indicate the capabilities of the type. + traitMask int +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (t *Type) ConvertToNative(typeDesc reflect.Type) (any, error) { + return nil, fmt.Errorf("type conversion not supported for 'type'") +} + +// ConvertToType implements ref.Val.ConvertToType. +func (t *Type) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case TypeType: + return TypeType + case StringType: + return String(t.TypeName()) + } + return NewErr("type conversion error from '%s' to '%s'", TypeType, typeVal) +} + +// Equal indicates whether two types have the same runtime type name. +// +// The name Equal is a bit of a misnomer, but for historical reasons, this is the +// runtime behavior. For a more accurate definition see IsType(). +func (t *Type) Equal(other ref.Val) ref.Val { + otherType, ok := other.(ref.Type) + return Bool(ok && t.TypeName() == otherType.TypeName()) +} + +// HasTrait implements the ref.Type interface method. +func (t *Type) HasTrait(trait int) bool { + return trait&t.traitMask == trait +} + +// IsExactType indicates whether the two types are exactly the same. This check also verifies type parameter type names. +func (t *Type) IsExactType(other *Type) bool { + return t.isTypeInternal(other, true) +} + +// IsEquivalentType indicates whether two types are equivalent. This check ignores type parameter type names. +func (t *Type) IsEquivalentType(other *Type) bool { + return t.isTypeInternal(other, false) +} + +// Kind indicates general category of the type. +func (t *Type) Kind() Kind { + if t == nil { + return UnspecifiedKind + } + return t.kind +} + +// isTypeInternal checks whether the two types are equivalent or exactly the same based on the checkTypeParamName flag. +func (t *Type) isTypeInternal(other *Type, checkTypeParamName bool) bool { + if t == nil { + return false + } + if t == other { + return true + } + if t.Kind() != other.Kind() || len(t.Parameters()) != len(other.Parameters()) { + return false + } + if (checkTypeParamName || t.Kind() != TypeParamKind) && t.TypeName() != other.TypeName() { + return false + } + for i, p := range t.Parameters() { + if !p.isTypeInternal(other.Parameters()[i], checkTypeParamName) { + return false + } + } + return true +} + +// IsAssignableType determines whether the current type is type-check assignable from the input fromType. +func (t *Type) IsAssignableType(fromType *Type) bool { + if t == nil { + return false + } + if t.isAssignableType != nil { + return t.isAssignableType(fromType) + } + return t.defaultIsAssignableType(fromType) +} + +// IsAssignableRuntimeType determines whether the current type is runtime assignable from the input runtimeType. +// +// At runtime, parameterized types are erased and so a function which type-checks to support a map(string, string) +// will have a runtime assignable type of a map. +func (t *Type) IsAssignableRuntimeType(val ref.Val) bool { + if t == nil { + return false + } + if t.isAssignableRuntimeType != nil { + return t.isAssignableRuntimeType(val) + } + return t.defaultIsAssignableRuntimeType(val) +} + +// Parameters returns the list of type parameters if set. +// +// For ListKind, Parameters()[0] represents the list element type +// For MapKind, Parameters()[0] represents the map key type, and Parameters()[1] represents the map +// value type. +func (t *Type) Parameters() []*Type { + if t == nil { + return emptyParams + } + return t.parameters +} + +// DeclaredTypeName indicates the fully qualified and parameterized type-check type name. +func (t *Type) DeclaredTypeName() string { + // if the type itself is neither null, nor dyn, but is assignable to null, then it's a wrapper type. + if t.Kind() != NullTypeKind && !t.isDyn() && t.IsAssignableType(NullType) { + return fmt.Sprintf("wrapper(%s)", t.TypeName()) + } + return t.TypeName() +} + +// Type implements the ref.Val interface method. +func (t *Type) Type() ref.Type { + return TypeType +} + +// Value implements the ref.Val interface method. +func (t *Type) Value() any { + return t.TypeName() +} + +// TypeName returns the type-erased fully qualified runtime type name. +// +// TypeName implements the ref.Type interface method. +func (t *Type) TypeName() string { + if t == nil { + return "" + } + return t.runtimeTypeName +} + +func (t *Type) format(sb *strings.Builder) { + sb.WriteString(t.TypeName()) +} + +// WithTraits creates a copy of the current Type and sets the trait mask to the traits parameter. +// +// This method should be used with Opaque types where the type acts like a container, e.g. vector. +func (t *Type) WithTraits(traits int) *Type { + if t == nil { + return nil + } + return &Type{ + kind: t.kind, + parameters: t.parameters, + runtimeTypeName: t.runtimeTypeName, + isAssignableType: t.isAssignableType, + isAssignableRuntimeType: t.isAssignableRuntimeType, + traitMask: traits, + } +} + +// String returns a human-readable definition of the type name. +func (t *Type) String() string { + if t.Kind() == TypeParamKind { + return fmt.Sprintf("<%s>", t.DeclaredTypeName()) + } + if len(t.Parameters()) == 0 { + return t.DeclaredTypeName() + } + params := make([]string, len(t.Parameters())) + for i, p := range t.Parameters() { + params[i] = p.String() + } + return fmt.Sprintf("%s(%s)", t.DeclaredTypeName(), strings.Join(params, ", ")) +} + +// isDyn indicates whether the type is dynamic in any way. +func (t *Type) isDyn() bool { + k := t.Kind() + return k == DynKind || k == AnyKind || k == TypeParamKind +} + +// defaultIsAssignableType provides the standard definition of what it means for one type to be assignable to another +// where any of the following may return a true result: +// - The from types are the same instance +// - The target type is dynamic +// - The fromType has the same kind and type name as the target type, and all parameters of the target type +// +// are IsAssignableType() from the parameters of the fromType. +func (t *Type) defaultIsAssignableType(fromType *Type) bool { + if t == fromType || t.isDyn() { + return true + } + if t.Kind() != fromType.Kind() || + t.TypeName() != fromType.TypeName() || + len(t.Parameters()) != len(fromType.Parameters()) { + return false + } + for i, tp := range t.Parameters() { + fp := fromType.Parameters()[i] + if !tp.IsAssignableType(fp) { + return false + } + } + return true +} + +// defaultIsAssignableRuntimeType inspects the type and in the case of list and map elements, the key and element types +// to determine whether a ref.Val is assignable to the declared type for a function signature. +func (t *Type) defaultIsAssignableRuntimeType(val ref.Val) bool { + valType := val.Type() + // If the current type and value type don't agree, then return + if !(t.isDyn() || t.TypeName() == valType.TypeName()) { + return false + } + switch t.Kind() { + case ListKind: + elemType := t.Parameters()[0] + l := val.(traits.Lister) + if l.Size() == IntZero { + return true + } + it := l.Iterator() + elemVal := it.Next() + return elemType.IsAssignableRuntimeType(elemVal) + case MapKind: + keyType := t.Parameters()[0] + elemType := t.Parameters()[1] + m := val.(traits.Mapper) + if m.Size() == IntZero { + return true + } + it := m.Iterator() + keyVal := it.Next() + elemVal := m.Get(keyVal) + return keyType.IsAssignableRuntimeType(keyVal) && elemType.IsAssignableRuntimeType(elemVal) + } + return true +} + +// NewListType creates an instances of a list type value with the provided element type. +func NewListType(elemType *Type) *Type { + return &Type{ + kind: ListKind, + parameters: []*Type{elemType}, + runtimeTypeName: "list", + traitMask: traits.AdderType | + traits.ContainerType | + traits.IndexerType | + traits.IterableType | + traits.SizerType, + } +} + +// NewMapType creates an instance of a map type value with the provided key and value types. +func NewMapType(keyType, valueType *Type) *Type { + return &Type{ + kind: MapKind, + parameters: []*Type{keyType, valueType}, + runtimeTypeName: "map", + traitMask: traits.ContainerType | + traits.IndexerType | + traits.IterableType | + traits.SizerType, + } +} + +// NewNullableType creates an instance of a nullable type with the provided wrapped type. +// +// Note: only primitive types are supported as wrapped types. +func NewNullableType(wrapped *Type) *Type { + return &Type{ + kind: wrapped.Kind(), + parameters: wrapped.Parameters(), + runtimeTypeName: wrapped.TypeName(), + traitMask: wrapped.traitMask, + isAssignableType: func(other *Type) bool { + return NullType.IsAssignableType(other) || wrapped.IsAssignableType(other) + }, + isAssignableRuntimeType: func(other ref.Val) bool { + return NullType.IsAssignableRuntimeType(other) || wrapped.IsAssignableRuntimeType(other) + }, + } +} + +// NewOptionalType creates an abstract parameterized type instance corresponding to CEL's notion of optional. +func NewOptionalType(param *Type) *Type { + return NewOpaqueType("optional_type", param) +} + +// NewOpaqueType creates an abstract parameterized type with a given name. +func NewOpaqueType(name string, params ...*Type) *Type { + return &Type{ + kind: OpaqueKind, + parameters: params, + runtimeTypeName: name, + } +} + +// NewObjectType creates a type reference to an externally defined type, e.g. a protobuf message type. +// +// An object type is assumed to support field presence testing and field indexing. Additionally, the +// type may also indicate additional traits through the use of the optional traits vararg argument. +func NewObjectType(typeName string, traits ...int) *Type { + // Function sanitizes object types on the fly + if wkt, found := checkedWellKnowns[typeName]; found { + return wkt + } + traitMask := 0 + for _, trait := range traits { + traitMask |= trait + } + return &Type{ + kind: StructKind, + parameters: emptyParams, + runtimeTypeName: typeName, + traitMask: structTypeTraitMask | traitMask, + } +} + +// NewObjectTypeValue creates a type reference to an externally defined type. +// +// Deprecated: use cel.ObjectType(typeName) +func NewObjectTypeValue(typeName string) *Type { + return NewObjectType(typeName) +} + +// NewTypeValue creates an opaque type which has a set of optional type traits as defined in +// the common/types/traits package. +// +// Deprecated: use cel.ObjectType(typeName, traits) +func NewTypeValue(typeName string, traits ...int) *Type { + traitMask := 0 + for _, trait := range traits { + traitMask |= trait + } + return &Type{ + kind: StructKind, + parameters: emptyParams, + runtimeTypeName: typeName, + traitMask: traitMask, + } +} + +// NewTypeParamType creates a parameterized type instance. +func NewTypeParamType(paramName string) *Type { + return &Type{ + kind: TypeParamKind, + runtimeTypeName: paramName, + } +} + +// NewTypeTypeWithParam creates a type with a type parameter. +// Used for type-checking purposes, but equivalent to TypeType otherwise. +func NewTypeTypeWithParam(param *Type) *Type { + return &Type{ + kind: TypeKind, + runtimeTypeName: "type", + parameters: []*Type{param}, + } +} + +// TypeToExprType converts a CEL-native type representation to a protobuf CEL Type representation. +func TypeToExprType(t *Type) (*exprpb.Type, error) { + switch t.Kind() { + case AnyKind: + return chkdecls.Any, nil + case BoolKind: + return maybeWrapper(t, chkdecls.Bool), nil + case BytesKind: + return maybeWrapper(t, chkdecls.Bytes), nil + case DoubleKind: + return maybeWrapper(t, chkdecls.Double), nil + case DurationKind: + return chkdecls.Duration, nil + case DynKind: + return chkdecls.Dyn, nil + case ErrorKind: + return chkdecls.Error, nil + case IntKind: + return maybeWrapper(t, chkdecls.Int), nil + case ListKind: + if len(t.Parameters()) != 1 { + return nil, fmt.Errorf("invalid list, got %d parameters, wanted one", len(t.Parameters())) + } + et, err := TypeToExprType(t.Parameters()[0]) + if err != nil { + return nil, err + } + return chkdecls.NewListType(et), nil + case MapKind: + if len(t.Parameters()) != 2 { + return nil, fmt.Errorf("invalid map, got %d parameters, wanted two", len(t.Parameters())) + } + kt, err := TypeToExprType(t.Parameters()[0]) + if err != nil { + return nil, err + } + vt, err := TypeToExprType(t.Parameters()[1]) + if err != nil { + return nil, err + } + return chkdecls.NewMapType(kt, vt), nil + case NullTypeKind: + return chkdecls.Null, nil + case OpaqueKind: + params := make([]*exprpb.Type, len(t.Parameters())) + for i, p := range t.Parameters() { + pt, err := TypeToExprType(p) + if err != nil { + return nil, err + } + params[i] = pt + } + return chkdecls.NewAbstractType(t.TypeName(), params...), nil + case StringKind: + return maybeWrapper(t, chkdecls.String), nil + case StructKind: + return chkdecls.NewObjectType(t.TypeName()), nil + case TimestampKind: + return chkdecls.Timestamp, nil + case TypeParamKind: + return chkdecls.NewTypeParamType(t.TypeName()), nil + case TypeKind: + if len(t.Parameters()) == 1 { + p, err := TypeToExprType(t.Parameters()[0]) + if err != nil { + return nil, err + } + return chkdecls.NewTypeType(p), nil + } + return chkdecls.NewTypeType(nil), nil + case UintKind: + return maybeWrapper(t, chkdecls.Uint), nil + } + return nil, fmt.Errorf("missing type conversion to proto: %v", t) +} + +// ExprTypeToType converts a protobuf CEL type representation to a CEL-native type representation. +func ExprTypeToType(t *exprpb.Type) (*Type, error) { + return AlphaProtoAsType(t) +} + +// AlphaProtoAsType converts a CEL v1alpha1.Type protobuf type to a CEL-native type representation. +func AlphaProtoAsType(t *exprpb.Type) (*Type, error) { + canonical := &celpb.Type{} + if err := convertProto(t, canonical); err != nil { + return nil, err + } + return ProtoAsType(canonical) +} + +// ProtoAsType converts a canonical CEL celpb.Type protobuf type to a CEL-native type representation. +func ProtoAsType(t *celpb.Type) (*Type, error) { + switch t.GetTypeKind().(type) { + case *celpb.Type_Dyn: + return DynType, nil + case *celpb.Type_AbstractType_: + paramTypes := make([]*Type, len(t.GetAbstractType().GetParameterTypes())) + for i, p := range t.GetAbstractType().GetParameterTypes() { + pt, err := ProtoAsType(p) + if err != nil { + return nil, err + } + paramTypes[i] = pt + } + return NewOpaqueType(t.GetAbstractType().GetName(), paramTypes...), nil + case *celpb.Type_ListType_: + et, err := ProtoAsType(t.GetListType().GetElemType()) + if err != nil { + return nil, err + } + return NewListType(et), nil + case *celpb.Type_MapType_: + kt, err := ProtoAsType(t.GetMapType().GetKeyType()) + if err != nil { + return nil, err + } + vt, err := ProtoAsType(t.GetMapType().GetValueType()) + if err != nil { + return nil, err + } + return NewMapType(kt, vt), nil + case *celpb.Type_MessageType: + return NewObjectType(t.GetMessageType()), nil + case *celpb.Type_Null: + return NullType, nil + case *celpb.Type_Primitive: + switch t.GetPrimitive() { + case celpb.Type_BOOL: + return BoolType, nil + case celpb.Type_BYTES: + return BytesType, nil + case celpb.Type_DOUBLE: + return DoubleType, nil + case celpb.Type_INT64: + return IntType, nil + case celpb.Type_STRING: + return StringType, nil + case celpb.Type_UINT64: + return UintType, nil + default: + return nil, fmt.Errorf("unsupported primitive type: %v", t) + } + case *celpb.Type_TypeParam: + return NewTypeParamType(t.GetTypeParam()), nil + case *celpb.Type_Type: + if t.GetType().GetTypeKind() != nil { + p, err := ProtoAsType(t.GetType()) + if err != nil { + return nil, err + } + return NewTypeTypeWithParam(p), nil + } + return TypeType, nil + case *celpb.Type_WellKnown: + switch t.GetWellKnown() { + case celpb.Type_ANY: + return AnyType, nil + case celpb.Type_DURATION: + return DurationType, nil + case celpb.Type_TIMESTAMP: + return TimestampType, nil + default: + return nil, fmt.Errorf("unsupported well-known type: %v", t) + } + case *celpb.Type_Wrapper: + t, err := ProtoAsType(&celpb.Type{TypeKind: &celpb.Type_Primitive{Primitive: t.GetWrapper()}}) + if err != nil { + return nil, err + } + return NewNullableType(t), nil + case *celpb.Type_Error: + return ErrorType, nil + default: + return nil, fmt.Errorf("unsupported type: %v", t) + } +} + +// TypeToProto converts from a CEL-native type representation to canonical CEL celpb.Type protobuf type. +func TypeToProto(t *Type) (*celpb.Type, error) { + exprType, err := TypeToExprType(t) + if err != nil { + return nil, err + } + var pbtype celpb.Type + if err = convertProto(exprType, &pbtype); err != nil { + return nil, err + } + return &pbtype, nil +} + +func maybeWrapper(t *Type, pbType *exprpb.Type) *exprpb.Type { + if t.IsAssignableType(NullType) { + return chkdecls.NewWrapperType(pbType) + } + return pbType +} + +func maybeForeignType(t ref.Type) *Type { + if celType, ok := t.(*Type); ok { + return celType + } + // Inspect the incoming type to determine its traits. The assumption will be that the incoming + // type does not have any field values; however, if the trait mask indicates that field testing + // and indexing are supported, the foreign type is marked as a struct. + traitMask := 0 + for _, trait := range allTraits { + if t.HasTrait(trait) { + traitMask |= trait + } + } + // Treat the value like a struct. If it has no fields, this is harmless to denote the type + // as such since it basically becomes an opaque type by convention. + return NewObjectType(t.TypeName(), traitMask) +} + +func convertProto(src, dst proto.Message) error { + pb, err := proto.Marshal(src) + if err != nil { + return err + } + err = proto.Unmarshal(pb, dst) + return err +} + +func primitiveType(primitive celpb.Type_PrimitiveType) *celpb.Type { + return &celpb.Type{ + TypeKind: &celpb.Type_Primitive{ + Primitive: primitive, + }, + } +} + +var ( + checkedWellKnowns = map[string]*Type{ + // Wrapper types. + "google.protobuf.BoolValue": NewNullableType(BoolType), + "google.protobuf.BytesValue": NewNullableType(BytesType), + "google.protobuf.DoubleValue": NewNullableType(DoubleType), + "google.protobuf.FloatValue": NewNullableType(DoubleType), + "google.protobuf.Int64Value": NewNullableType(IntType), + "google.protobuf.Int32Value": NewNullableType(IntType), + "google.protobuf.UInt64Value": NewNullableType(UintType), + "google.protobuf.UInt32Value": NewNullableType(UintType), + "google.protobuf.StringValue": NewNullableType(StringType), + // Well-known types. + "google.protobuf.Any": AnyType, + "google.protobuf.Duration": DurationType, + "google.protobuf.Timestamp": TimestampType, + // Json types. + "google.protobuf.ListValue": NewListType(DynType), + "google.protobuf.NullValue": NullType, + "google.protobuf.Struct": NewMapType(StringType, DynType), + "google.protobuf.Value": DynType, + } + + emptyParams = []*Type{} + + allTraits = []int{ + traits.AdderType, + traits.ComparerType, + traits.ContainerType, + traits.DividerType, + traits.FieldTesterType, + traits.IndexerType, + traits.IterableType, + traits.IteratorType, + traits.MatcherType, + traits.ModderType, + traits.MultiplierType, + traits.NegatorType, + traits.ReceiverType, + traits.SizerType, + traits.SubtractorType, + } + + structTypeTraitMask = traits.FieldTesterType | traits.IndexerType + + boolType = primitiveType(celpb.Type_BOOL) + bytesType = primitiveType(celpb.Type_BYTES) + doubleType = primitiveType(celpb.Type_DOUBLE) + intType = primitiveType(celpb.Type_INT64) + stringType = primitiveType(celpb.Type_STRING) + uintType = primitiveType(celpb.Type_UINT64) +) diff --git a/vendor/github.com/google/cel-go/common/types/uint.go b/vendor/github.com/google/cel-go/common/types/uint.go new file mode 100644 index 0000000000..a93405a134 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/uint.go @@ -0,0 +1,262 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "math" + "reflect" + "strconv" + "strings" + + "github.com/google/cel-go/common/types/ref" + + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" + wrapperspb "google.golang.org/protobuf/types/known/wrapperspb" +) + +// Uint type implementation which supports comparison and math operators. +type Uint uint64 + +var ( + uint32WrapperType = reflect.TypeOf(&wrapperspb.UInt32Value{}) + + uint64WrapperType = reflect.TypeOf(&wrapperspb.UInt64Value{}) +) + +// Uint constants +const ( + uintZero = Uint(0) +) + +// Add implements traits.Adder.Add. +func (i Uint) Add(other ref.Val) ref.Val { + otherUint, ok := other.(Uint) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + val, err := addUint64Checked(uint64(i), uint64(otherUint)) + if err != nil { + return WrapErr(err) + } + return Uint(val) +} + +// Compare implements traits.Comparer.Compare. +func (i Uint) Compare(other ref.Val) ref.Val { + switch ov := other.(type) { + case Double: + if math.IsNaN(float64(ov)) { + return NewErr("NaN values cannot be ordered") + } + return compareUintDouble(i, ov) + case Int: + return compareUintInt(i, ov) + case Uint: + return compareUint(i, ov) + default: + return MaybeNoSuchOverloadErr(other) + } +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (i Uint) ConvertToNative(typeDesc reflect.Type) (any, error) { + switch typeDesc.Kind() { + case reflect.Uint, reflect.Uint32: + v, err := uint64ToUint32Checked(uint64(i)) + if err != nil { + return 0, err + } + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Uint8: + v, err := uint64ToUint8Checked(uint64(i)) + if err != nil { + return 0, err + } + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Uint16: + v, err := uint64ToUint16Checked(uint64(i)) + if err != nil { + return 0, err + } + return reflect.ValueOf(v).Convert(typeDesc).Interface(), nil + case reflect.Uint64: + return reflect.ValueOf(i).Convert(typeDesc).Interface(), nil + case reflect.Ptr: + switch typeDesc { + case anyValueType: + // Primitives must be wrapped before being set on an Any field. + return anypb.New(wrapperspb.UInt64(uint64(i))) + case jsonValueType: + // JSON can accurately represent 32-bit uints as floating point values. + if i.isJSONSafe() { + return structpb.NewNumberValue(float64(i)), nil + } + // Proto3 to JSON conversion requires string-formatted uint64 values + // since the conversion to floating point would result in truncation. + return structpb.NewStringValue(strconv.FormatUint(uint64(i), 10)), nil + case uint32WrapperType: + // Convert the value to a wrapperspb.UInt32Value, error on overflow. + v, err := uint64ToUint32Checked(uint64(i)) + if err != nil { + return 0, err + } + return wrapperspb.UInt32(v), nil + case uint64WrapperType: + // Convert the value to a wrapperspb.UInt64Value. + return wrapperspb.UInt64(uint64(i)), nil + } + switch typeDesc.Elem().Kind() { + case reflect.Uint32: + v, err := uint64ToUint32Checked(uint64(i)) + if err != nil { + return 0, err + } + p := reflect.New(typeDesc.Elem()) + p.Elem().Set(reflect.ValueOf(v).Convert(typeDesc.Elem())) + return p.Interface(), nil + case reflect.Uint64: + v := uint64(i) + p := reflect.New(typeDesc.Elem()) + p.Elem().Set(reflect.ValueOf(v).Convert(typeDesc.Elem())) + return p.Interface(), nil + } + case reflect.Interface: + iv := i.Value() + if reflect.TypeOf(iv).Implements(typeDesc) { + return iv, nil + } + if reflect.TypeOf(i).Implements(typeDesc) { + return i, nil + } + } + return nil, fmt.Errorf("unsupported type conversion from 'uint' to %v", typeDesc) +} + +// ConvertToType implements ref.Val.ConvertToType. +func (i Uint) ConvertToType(typeVal ref.Type) ref.Val { + switch typeVal { + case IntType: + v, err := uint64ToInt64Checked(uint64(i)) + if err != nil { + return WrapErr(err) + } + return Int(v) + case UintType: + return i + case DoubleType: + return Double(i) + case StringType: + return String(fmt.Sprintf("%d", uint64(i))) + case TypeType: + return UintType + } + return NewErr("type conversion error from '%s' to '%s'", UintType, typeVal) +} + +// Divide implements traits.Divider.Divide. +func (i Uint) Divide(other ref.Val) ref.Val { + otherUint, ok := other.(Uint) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + div, err := divideUint64Checked(uint64(i), uint64(otherUint)) + if err != nil { + return WrapErr(err) + } + return Uint(div) +} + +// Equal implements ref.Val.Equal. +func (i Uint) Equal(other ref.Val) ref.Val { + switch ov := other.(type) { + case Double: + if math.IsNaN(float64(ov)) { + return False + } + return Bool(compareUintDouble(i, ov) == 0) + case Int: + return Bool(compareUintInt(i, ov) == 0) + case Uint: + return Bool(i == ov) + default: + return False + } +} + +// IsZeroValue returns true if the uint is zero. +func (i Uint) IsZeroValue() bool { + return i == 0 +} + +// Modulo implements traits.Modder.Modulo. +func (i Uint) Modulo(other ref.Val) ref.Val { + otherUint, ok := other.(Uint) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + mod, err := moduloUint64Checked(uint64(i), uint64(otherUint)) + if err != nil { + return WrapErr(err) + } + return Uint(mod) +} + +// Multiply implements traits.Multiplier.Multiply. +func (i Uint) Multiply(other ref.Val) ref.Val { + otherUint, ok := other.(Uint) + if !ok { + return MaybeNoSuchOverloadErr(other) + } + val, err := multiplyUint64Checked(uint64(i), uint64(otherUint)) + if err != nil { + return WrapErr(err) + } + return Uint(val) +} + +// Subtract implements traits.Subtractor.Subtract. +func (i Uint) Subtract(subtrahend ref.Val) ref.Val { + subtraUint, ok := subtrahend.(Uint) + if !ok { + return MaybeNoSuchOverloadErr(subtrahend) + } + val, err := subtractUint64Checked(uint64(i), uint64(subtraUint)) + if err != nil { + return WrapErr(err) + } + return Uint(val) +} + +// Type implements ref.Val.Type. +func (i Uint) Type() ref.Type { + return UintType +} + +// Value implements ref.Val.Value. +func (i Uint) Value() any { + return uint64(i) +} + +func (i Uint) format(sb *strings.Builder) { + sb.WriteString(strconv.FormatUint(uint64(i), 10)) + sb.WriteString("u") +} + +// isJSONSafe indicates whether the uint is safely representable as a floating point value in JSON. +func (i Uint) isJSONSafe() bool { + return i <= maxIntJSON +} diff --git a/vendor/github.com/google/cel-go/common/types/unknown.go b/vendor/github.com/google/cel-go/common/types/unknown.go new file mode 100644 index 0000000000..9dd2b25794 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/unknown.go @@ -0,0 +1,326 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "fmt" + "math" + "reflect" + "sort" + "strings" + "unicode" + + "github.com/google/cel-go/common/types/ref" +) + +var ( + unspecifiedAttribute = &AttributeTrail{qualifierPath: []any{}} +) + +// NewAttributeTrail creates a new simple attribute from a variable name. +func NewAttributeTrail(variable string) *AttributeTrail { + if variable == "" { + return unspecifiedAttribute + } + return &AttributeTrail{variable: variable} +} + +// AttributeTrail specifies a variable with an optional qualifier path. An attribute value is expected to +// correspond to an AbsoluteAttribute, meaning a field selection which starts with a top-level variable. +// +// The qualifer path elements adhere to the AttributeQualifier type constraint. +type AttributeTrail struct { + variable string + qualifierPath []any +} + +// Equal returns whether two attribute values have the same variable name and qualifier paths. +func (a *AttributeTrail) Equal(other *AttributeTrail) bool { + if a.Variable() != other.Variable() || len(a.QualifierPath()) != len(other.QualifierPath()) { + return false + } + for i, q := range a.QualifierPath() { + qual := other.QualifierPath()[i] + if !qualifiersEqual(q, qual) { + return false + } + } + return true +} + +func qualifiersEqual(a, b any) bool { + if a == b { + return true + } + switch numA := a.(type) { + case int64: + numB, ok := b.(uint64) + if !ok { + return false + } + return intUintEqual(numA, numB) + case uint64: + numB, ok := b.(int64) + if !ok { + return false + } + return intUintEqual(numB, numA) + default: + return false + } +} + +func intUintEqual(i int64, u uint64) bool { + if i < 0 || u > math.MaxInt64 { + return false + } + return i == int64(u) +} + +// Variable returns the variable name associated with the attribute. +func (a *AttributeTrail) Variable() string { + return a.variable +} + +// QualifierPath returns the optional set of qualifying fields or indices applied to the variable. +func (a *AttributeTrail) QualifierPath() []any { + return a.qualifierPath +} + +// String returns the string representation of the Attribute. +func (a *AttributeTrail) String() string { + if a.variable == "" { + return "" + } + var str strings.Builder + str.WriteString(a.variable) + for _, q := range a.qualifierPath { + switch q := q.(type) { + case bool, int64: + str.WriteString(fmt.Sprintf("[%v]", q)) + case uint64: + str.WriteString(fmt.Sprintf("[%vu]", q)) + case string: + if isIdentifierCharacter(q) { + str.WriteString(fmt.Sprintf(".%v", q)) + } else { + str.WriteString(fmt.Sprintf("[%q]", q)) + } + } + } + return str.String() +} + +func isIdentifierCharacter(str string) bool { + for _, c := range str { + if unicode.IsLetter(c) || unicode.IsDigit(c) || string(c) == "_" { + continue + } + return false + } + return true +} + +// AttributeQualifier constrains the possible types which may be used to qualify an attribute. +type AttributeQualifier interface { + bool | int64 | uint64 | string +} + +// QualifyAttribute qualifies an attribute using a valid AttributeQualifier type. +func QualifyAttribute[T AttributeQualifier](attr *AttributeTrail, qualifier T) *AttributeTrail { + attr.qualifierPath = append(attr.qualifierPath, qualifier) + return attr +} + +// Unknown type which collects expression ids which caused the current value to become unknown. +type Unknown struct { + attributeTrails map[int64][]*AttributeTrail +} + +// NewUnknown creates a new unknown at a given expression id for an attribute. +// +// If the attribute is nil, the attribute value will be the `unspecifiedAttribute`. +func NewUnknown(id int64, attr *AttributeTrail) *Unknown { + if attr == nil { + attr = unspecifiedAttribute + } + return &Unknown{ + attributeTrails: map[int64][]*AttributeTrail{id: {attr}}, + } +} + +// IDs returns the set of unknown expression ids contained by this value. +// +// Numeric identifiers are guaranteed to be in sorted order. +func (u *Unknown) IDs() []int64 { + ids := make(int64Slice, len(u.attributeTrails)) + i := 0 + for id := range u.attributeTrails { + ids[i] = id + i++ + } + ids.Sort() + return ids +} + +// GetAttributeTrails returns the attribute trails, if present, missing for a given expression id. +func (u *Unknown) GetAttributeTrails(id int64) ([]*AttributeTrail, bool) { + trails, found := u.attributeTrails[id] + return trails, found +} + +// Contains returns true if the input unknown is a subset of the current unknown. +func (u *Unknown) Contains(other *Unknown) bool { + for id, otherTrails := range other.attributeTrails { + trails, found := u.attributeTrails[id] + if !found || len(otherTrails) != len(trails) { + return false + } + for _, ot := range otherTrails { + found := false + for _, t := range trails { + if t.Equal(ot) { + found = true + break + } + } + if !found { + return false + } + } + } + return true +} + +// ConvertToNative implements ref.Val.ConvertToNative. +func (u *Unknown) ConvertToNative(typeDesc reflect.Type) (any, error) { + return u.Value(), nil +} + +// ConvertToType is an identity function since unknown values cannot be modified. +func (u *Unknown) ConvertToType(typeVal ref.Type) ref.Val { + return u +} + +// Equal is an identity function since unknown values cannot be modified. +func (u *Unknown) Equal(other ref.Val) ref.Val { + return u +} + +// String implements the Stringer interface +func (u *Unknown) String() string { + var str strings.Builder + for id, attrs := range u.attributeTrails { + if str.Len() != 0 { + str.WriteString(", ") + } + if len(attrs) == 1 { + str.WriteString(fmt.Sprintf("%v (%d)", attrs[0], id)) + } else { + str.WriteString(fmt.Sprintf("%v (%d)", attrs, id)) + } + } + return str.String() +} + +// Type implements ref.Val.Type. +func (u *Unknown) Type() ref.Type { + return UnknownType +} + +// Value implements ref.Val.Value. +func (u *Unknown) Value() any { + return u +} + +// IsUnknown returns whether the element ref.Val is in instance of *types.Unknown +func IsUnknown(val ref.Val) bool { + switch val.(type) { + case *Unknown: + return true + default: + return false + } +} + +// MaybeMergeUnknowns determines whether an input value and another, possibly nil, unknown will produce +// an unknown result. +// +// If the input `val` is another Unknown, then the result will be the merge of the `val` and the input +// `unk`. If the `val` is not unknown, then the result will depend on whether the input `unk` is nil. +// If both values are non-nil and unknown, then the return value will be a merge of both unknowns. +func MaybeMergeUnknowns(val ref.Val, unk *Unknown) (*Unknown, bool) { + src, isUnk := val.(*Unknown) + if !isUnk { + if unk != nil { + return unk, true + } + return unk, false + } + return MergeUnknowns(src, unk), true +} + +// MergeUnknowns combines two unknown values into a new unknown value. +func MergeUnknowns(unk1, unk2 *Unknown) *Unknown { + if unk1 == nil { + return unk2 + } + if unk2 == nil { + return unk1 + } + out := &Unknown{ + attributeTrails: make(map[int64][]*AttributeTrail, len(unk1.attributeTrails)+len(unk2.attributeTrails)), + } + for id, ats := range unk1.attributeTrails { + out.attributeTrails[id] = ats + } + for id, ats := range unk2.attributeTrails { + existing, found := out.attributeTrails[id] + if !found { + out.attributeTrails[id] = ats + continue + } + + for _, at := range ats { + found := false + for _, et := range existing { + if at.Equal(et) { + found = true + break + } + } + if !found { + existing = append(existing, at) + } + } + out.attributeTrails[id] = existing + } + return out +} + +// int64Slice is an implementation of the sort.Interface +type int64Slice []int64 + +// Len returns the number of elements in the slice. +func (x int64Slice) Len() int { return len(x) } + +// Less indicates whether the value at index i is less than the value at index j. +func (x int64Slice) Less(i, j int) bool { return x[i] < x[j] } + +// Swap swaps the values at indices i and j in place. +func (x int64Slice) Swap(i, j int) { x[i], x[j] = x[j], x[i] } + +// Sort is a convenience method: x.Sort() calls Sort(x). +func (x int64Slice) Sort() { sort.Sort(x) } diff --git a/vendor/github.com/google/cel-go/common/types/util.go b/vendor/github.com/google/cel-go/common/types/util.go new file mode 100644 index 0000000000..71662eee31 --- /dev/null +++ b/vendor/github.com/google/cel-go/common/types/util.go @@ -0,0 +1,48 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package types + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// IsUnknownOrError returns whether the input element ref.Val is an ErrType or UnknownType. +func IsUnknownOrError(val ref.Val) bool { + switch val.(type) { + case *Unknown, *Err: + return true + } + return false +} + +// IsPrimitiveType returns whether the input element ref.Val is a primitive type. +// Note, primitive types do not include well-known types such as Duration and Timestamp. +func IsPrimitiveType(val ref.Val) bool { + switch val.Type() { + case BoolType, BytesType, DoubleType, IntType, StringType, UintType: + return true + } + return false +} + +// Equal returns whether the two ref.Value are heterogeneously equivalent. +func Equal(lhs ref.Val, rhs ref.Val) ref.Val { + lNull := lhs == NullValue + rNull := rhs == NullValue + if lNull || rNull { + return Bool(lNull == rNull) + } + return lhs.Equal(rhs) +} diff --git a/vendor/github.com/google/cel-go/interpreter/BUILD.bazel b/vendor/github.com/google/cel-go/interpreter/BUILD.bazel new file mode 100644 index 0000000000..220e23d475 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/BUILD.bazel @@ -0,0 +1,74 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + default_visibility = ["//visibility:public"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "activation.go", + "attribute_patterns.go", + "attributes.go", + "decorators.go", + "dispatcher.go", + "evalstate.go", + "interpretable.go", + "interpreter.go", + "optimizations.go", + "planner.go", + "prune.go", + "runtimecost.go", + ], + importpath = "github.com/google/cel-go/interpreter", + deps = [ + "//common:go_default_library", + "//common/ast:go_default_library", + "//common/containers:go_default_library", + "//common/functions:go_default_library", + "//common/operators:go_default_library", + "//common/overloads:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//common/types/traits:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//types/known/durationpb:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + "@org_golang_google_protobuf//types/known/timestamppb:go_default_library", + "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + srcs = [ + "activation_test.go", + "attribute_patterns_test.go", + "attributes_test.go", + "interpreter_test.go", + "prune_test.go", + "runtimecost_test.go", + ], + embed = [ + ":go_default_library", + ], + deps = [ + "//checker:go_default_library", + "//common/containers:go_default_library", + "//common/debug:go_default_library", + "//common/decls:go_default_library", + "//common/functions:go_default_library", + "//common/operators:go_default_library", + "//common/stdlib:go_default_library", + "//common/types:go_default_library", + "//parser:go_default_library", + "//test:go_default_library", + "//test/proto2pb:go_default_library", + "//test/proto3pb:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//types/known/anypb:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/interpreter/activation.go b/vendor/github.com/google/cel-go/interpreter/activation.go new file mode 100644 index 0000000000..dd40619ee1 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/activation.go @@ -0,0 +1,192 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "errors" + "fmt" + + "github.com/google/cel-go/common/types/ref" +) + +// Activation used to resolve identifiers by name and references by id. +// +// An Activation is the primary mechanism by which a caller supplies input into a CEL program. +type Activation interface { + // ResolveName returns a value from the activation by qualified name, or false if the name + // could not be found. + ResolveName(name string) (any, bool) + + // Parent returns the parent of the current activation, may be nil. + // If non-nil, the parent will be searched during resolve calls. + Parent() Activation +} + +// EmptyActivation returns a variable-free activation. +func EmptyActivation() Activation { + return emptyActivation{} +} + +// emptyActivation is a variable-free activation. +type emptyActivation struct{} + +func (emptyActivation) ResolveName(string) (any, bool) { return nil, false } +func (emptyActivation) Parent() Activation { return nil } + +// NewActivation returns an activation based on a map-based binding where the map keys are +// expected to be qualified names used with ResolveName calls. +// +// The input `bindings` may either be of type `Activation` or `map[string]any`. +// +// Lazy bindings may be supplied within the map-based input in either of the following forms: +// - func() any +// - func() ref.Val +// +// The output of the lazy binding will overwrite the variable reference in the internal map. +// +// Values which are not represented as ref.Val types on input may be adapted to a ref.Val using +// the types.Adapter configured in the environment. +func NewActivation(bindings any) (Activation, error) { + if bindings == nil { + return nil, errors.New("bindings must be non-nil") + } + a, isActivation := bindings.(Activation) + if isActivation { + return a, nil + } + m, isMap := bindings.(map[string]any) + if !isMap { + return nil, fmt.Errorf( + "activation input must be an activation or map[string]interface: got %T", + bindings) + } + return &mapActivation{bindings: m}, nil +} + +// mapActivation which implements Activation and maps of named values. +// +// Named bindings may lazily supply values by providing a function which accepts no arguments and +// produces an interface value. +type mapActivation struct { + bindings map[string]any +} + +// Parent implements the Activation interface method. +func (a *mapActivation) Parent() Activation { + return nil +} + +// ResolveName implements the Activation interface method. +func (a *mapActivation) ResolveName(name string) (any, bool) { + obj, found := a.bindings[name] + if !found { + return nil, false + } + fn, isLazy := obj.(func() ref.Val) + if isLazy { + obj = fn() + a.bindings[name] = obj + } + fnRaw, isLazy := obj.(func() any) + if isLazy { + obj = fnRaw() + a.bindings[name] = obj + } + return obj, found +} + +// hierarchicalActivation which implements Activation and contains a parent and +// child activation. +type hierarchicalActivation struct { + parent Activation + child Activation +} + +// Parent implements the Activation interface method. +func (a *hierarchicalActivation) Parent() Activation { + return a.parent +} + +// ResolveName implements the Activation interface method. +func (a *hierarchicalActivation) ResolveName(name string) (any, bool) { + if object, found := a.child.ResolveName(name); found { + return object, found + } + return a.parent.ResolveName(name) +} + +// NewHierarchicalActivation takes two activations and produces a new one which prioritizes +// resolution in the child first and parent(s) second. +func NewHierarchicalActivation(parent Activation, child Activation) Activation { + return &hierarchicalActivation{parent, child} +} + +// NewPartialActivation returns an Activation which contains a list of AttributePattern values +// representing field and index operations that should result in a 'types.Unknown' result. +// +// The `bindings` value may be any value type supported by the interpreter.NewActivation call, +// but is typically either an existing Activation or map[string]any. +func NewPartialActivation(bindings any, + unknowns ...*AttributePattern) (PartialActivation, error) { + a, err := NewActivation(bindings) + if err != nil { + return nil, err + } + return &partActivation{Activation: a, unknowns: unknowns}, nil +} + +// PartialActivation extends the Activation interface with a set of UnknownAttributePatterns. +type PartialActivation interface { + Activation + + // UnknownAttributePaths returns a set of AttributePattern values which match Attribute + // expressions for data accesses whose values are not yet known. + UnknownAttributePatterns() []*AttributePattern +} + +// partialActivationConverter indicates whether an Activation implementation supports conversion to a PartialActivation +type partialActivationConverter interface { + // AsPartialActivation converts the current activation to a PartialActivation + AsPartialActivation() (PartialActivation, bool) +} + +// partActivation is the default implementations of the PartialActivation interface. +type partActivation struct { + Activation + unknowns []*AttributePattern +} + +// UnknownAttributePatterns implements the PartialActivation interface method. +func (a *partActivation) UnknownAttributePatterns() []*AttributePattern { + return a.unknowns +} + +// AsPartialActivation returns the partActivation as a PartialActivation interface. +func (a *partActivation) AsPartialActivation() (PartialActivation, bool) { + return a, true +} + +// AsPartialActivation walks the activation hierarchy and returns the first PartialActivation, if found. +func AsPartialActivation(vars Activation) (PartialActivation, bool) { + // Only internal activation instances may implement this interface + if pv, ok := vars.(partialActivationConverter); ok { + return pv.AsPartialActivation() + } + // Since Activations may be hierarchical, test whether a parent converts to a PartialActivation + if vars.Parent() != nil { + return AsPartialActivation(vars.Parent()) + } + return nil, false +} diff --git a/vendor/github.com/google/cel-go/interpreter/attribute_patterns.go b/vendor/github.com/google/cel-go/interpreter/attribute_patterns.go new file mode 100644 index 0000000000..7d0759e378 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/attribute_patterns.go @@ -0,0 +1,386 @@ +// Copyright 2020 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "fmt" + + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// AttributePattern represents a top-level variable with an optional set of qualifier patterns. +// +// When using a CEL expression within a container, e.g. a package or namespace, the variable name +// in the pattern must match the qualified name produced during the variable namespace resolution. +// For example, if variable `c` appears in an expression whose container is `a.b`, the variable +// name supplied to the pattern must be `a.b.c` +// +// The qualifier patterns for attribute matching must be one of the following: +// +// - valid map key type: string, int, uint, bool +// - wildcard (*) +// +// Examples: +// +// 1. ns.myvar["complex-value"] +// 2. ns.myvar["complex-value"][0] +// 3. ns.myvar["complex-value"].*.name +// +// The first example is simple: match an attribute where the variable is 'ns.myvar' with a +// field access on 'complex-value'. The second example expands the match to indicate that only +// a specific index `0` should match. And lastly, the third example matches any indexed access +// that later selects the 'name' field. +type AttributePattern struct { + variable string + qualifierPatterns []*AttributeQualifierPattern +} + +// NewAttributePattern produces a new mutable AttributePattern based on a variable name. +func NewAttributePattern(variable string) *AttributePattern { + return &AttributePattern{ + variable: variable, + qualifierPatterns: []*AttributeQualifierPattern{}, + } +} + +// QualString adds a string qualifier pattern to the AttributePattern. The string may be a valid +// identifier, or string map key including empty string. +func (apat *AttributePattern) QualString(pattern string) *AttributePattern { + apat.qualifierPatterns = append(apat.qualifierPatterns, + &AttributeQualifierPattern{value: pattern}) + return apat +} + +// QualInt adds an int qualifier pattern to the AttributePattern. The index may be either a map or +// list index. +func (apat *AttributePattern) QualInt(pattern int64) *AttributePattern { + apat.qualifierPatterns = append(apat.qualifierPatterns, + &AttributeQualifierPattern{value: pattern}) + return apat +} + +// QualUint adds an uint qualifier pattern for a map index operation to the AttributePattern. +func (apat *AttributePattern) QualUint(pattern uint64) *AttributePattern { + apat.qualifierPatterns = append(apat.qualifierPatterns, + &AttributeQualifierPattern{value: pattern}) + return apat +} + +// QualBool adds a bool qualifier pattern for a map index operation to the AttributePattern. +func (apat *AttributePattern) QualBool(pattern bool) *AttributePattern { + apat.qualifierPatterns = append(apat.qualifierPatterns, + &AttributeQualifierPattern{value: pattern}) + return apat +} + +// Wildcard adds a special sentinel qualifier pattern that will match any single qualifier. +func (apat *AttributePattern) Wildcard() *AttributePattern { + apat.qualifierPatterns = append(apat.qualifierPatterns, + &AttributeQualifierPattern{wildcard: true}) + return apat +} + +// VariableMatches returns true if the fully qualified variable matches the AttributePattern +// fully qualified variable name. +func (apat *AttributePattern) VariableMatches(variable string) bool { + return apat.variable == variable +} + +// QualifierPatterns returns the set of AttributeQualifierPattern values on the AttributePattern. +func (apat *AttributePattern) QualifierPatterns() []*AttributeQualifierPattern { + return apat.qualifierPatterns +} + +// AttributeQualifierPattern holds a wildcard or valued qualifier pattern. +type AttributeQualifierPattern struct { + wildcard bool + value any +} + +// Matches returns true if the qualifier pattern is a wildcard, or the Qualifier implements the +// qualifierValueEquator interface and its IsValueEqualTo returns true for the qualifier pattern. +func (qpat *AttributeQualifierPattern) Matches(q Qualifier) bool { + if qpat.wildcard { + return true + } + qve, ok := q.(qualifierValueEquator) + return ok && qve.QualifierValueEquals(qpat.value) +} + +// qualifierValueEquator defines an interface for determining if an input value, of valid map key +// type, is equal to the value held in the Qualifier. This interface is used by the +// AttributeQualifierPattern to determine pattern matches for non-wildcard qualifier patterns. +// +// Note: Attribute values are also Qualifier values; however, Attributes are resolved before +// qualification happens. This is an implementation detail, but one relevant to why the Attribute +// types do not surface in the list of implementations. +// +// See: partialAttributeFactory.matchesUnknownPatterns for more details on how this interface is +// used. +type qualifierValueEquator interface { + // QualifierValueEquals returns true if the input value is equal to the value held in the + // Qualifier. + QualifierValueEquals(value any) bool +} + +// QualifierValueEquals implementation for boolean qualifiers. +func (q *boolQualifier) QualifierValueEquals(value any) bool { + bval, ok := value.(bool) + return ok && q.value == bval +} + +// QualifierValueEquals implementation for field qualifiers. +func (q *fieldQualifier) QualifierValueEquals(value any) bool { + sval, ok := value.(string) + return ok && q.Name == sval +} + +// QualifierValueEquals implementation for string qualifiers. +func (q *stringQualifier) QualifierValueEquals(value any) bool { + sval, ok := value.(string) + return ok && q.value == sval +} + +// QualifierValueEquals implementation for int qualifiers. +func (q *intQualifier) QualifierValueEquals(value any) bool { + return numericValueEquals(value, q.celValue) +} + +// QualifierValueEquals implementation for uint qualifiers. +func (q *uintQualifier) QualifierValueEquals(value any) bool { + return numericValueEquals(value, q.celValue) +} + +// QualifierValueEquals implementation for double qualifiers. +func (q *doubleQualifier) QualifierValueEquals(value any) bool { + return numericValueEquals(value, q.celValue) +} + +// numericValueEquals uses CEL equality to determine whether two number values are +func numericValueEquals(value any, celValue ref.Val) bool { + val := types.DefaultTypeAdapter.NativeToValue(value) + return celValue.Equal(val) == types.True +} + +// NewPartialAttributeFactory returns an AttributeFactory implementation capable of performing +// AttributePattern matches with PartialActivation inputs. +func NewPartialAttributeFactory(container *containers.Container, adapter types.Adapter, provider types.Provider, opts ...AttrFactoryOption) AttributeFactory { + fac := NewAttributeFactory(container, adapter, provider, opts...) + return &partialAttributeFactory{ + AttributeFactory: fac, + container: container, + adapter: adapter, + provider: provider, + } +} + +type partialAttributeFactory struct { + AttributeFactory + container *containers.Container + adapter types.Adapter + provider types.Provider +} + +// AbsoluteAttribute implementation of the AttributeFactory interface which wraps the +// NamespacedAttribute resolution in an internal attributeMatcher object to dynamically match +// unknown patterns from PartialActivation inputs if given. +func (fac *partialAttributeFactory) AbsoluteAttribute(id int64, names ...string) NamespacedAttribute { + attr := fac.AttributeFactory.AbsoluteAttribute(id, names...) + return &attributeMatcher{fac: fac, NamespacedAttribute: attr} +} + +// MaybeAttribute implementation of the AttributeFactory interface which ensure that the set of +// 'maybe' NamespacedAttribute values are produced using the partialAttributeFactory rather than +// the base AttributeFactory implementation. +func (fac *partialAttributeFactory) MaybeAttribute(id int64, name string) Attribute { + return &maybeAttribute{ + id: id, + attrs: []NamespacedAttribute{ + fac.AbsoluteAttribute(id, fac.container.ResolveCandidateNames(name)...), + }, + adapter: fac.adapter, + provider: fac.provider, + fac: fac, + } +} + +// matchesUnknownPatterns returns true if the variable names and qualifiers for a given +// Attribute value match any of the ActivationPattern objects in the set of unknown activation +// patterns on the given PartialActivation. +// +// For example, in the expression `a.b`, the Attribute is composed of variable `a`, with string +// qualifier `b`. When a PartialActivation is supplied, it indicates that some or all of the data +// provided in the input is unknown by specifying unknown AttributePatterns. An AttributePattern +// that refers to variable `a` with a string qualifier of `c` will not match `a.b`; however, any +// of the following patterns will match Attribute `a.b`: +// +// - `AttributePattern("a")` +// - `AttributePattern("a").Wildcard()` +// - `AttributePattern("a").QualString("b")` +// - `AttributePattern("a").QualString("b").QualInt(0)` +// +// Any AttributePattern which overlaps an Attribute or vice-versa will produce an Unknown result +// for the last pattern matched variable or qualifier in the Attribute. In the first matching +// example, the expression id representing variable `a` would be listed in the Unknown result, +// whereas in the other pattern examples, the qualifier `b` would be returned as the Unknown. +func (fac *partialAttributeFactory) matchesUnknownPatterns( + vars PartialActivation, + attrID int64, + variableNames []string, + qualifiers []Qualifier) (*types.Unknown, error) { + patterns := vars.UnknownAttributePatterns() + candidateIndices := map[int]struct{}{} + for _, variable := range variableNames { + for i, pat := range patterns { + if pat.VariableMatches(variable) { + if len(qualifiers) == 0 { + return types.NewUnknown(attrID, types.NewAttributeTrail(variable)), nil + } + candidateIndices[i] = struct{}{} + } + } + } + // Determine whether to return early if there are no candidate unknown patterns. + if len(candidateIndices) == 0 { + return nil, nil + } + // Resolve the attribute qualifiers into a static set. This prevents more dynamic + // Attribute resolutions than necessary when there are multiple unknown patterns + // that traverse the same Attribute-based qualifier field. + newQuals := make([]Qualifier, len(qualifiers)) + for i, qual := range qualifiers { + attr, isAttr := qual.(Attribute) + if isAttr { + val, err := attr.Resolve(vars) + if err != nil { + return nil, err + } + // If this resolution behavior ever changes, new implementations of the + // qualifierValueEquator may be required to handle proper resolution. + qual, err = fac.NewQualifier(nil, qual.ID(), val, attr.IsOptional()) + if err != nil { + return nil, err + } + } + newQuals[i] = qual + } + // Determine whether any of the unknown patterns match. + for patIdx := range candidateIndices { + pat := patterns[patIdx] + isUnk := true + matchExprID := attrID + qualPats := pat.QualifierPatterns() + for i, qual := range newQuals { + if i >= len(qualPats) { + break + } + matchExprID = qual.ID() + qualPat := qualPats[i] + // Note, the AttributeQualifierPattern relies on the input Qualifier not being an + // Attribute, since there is no way to resolve the Attribute with the information + // provided to the Matches call. + if !qualPat.Matches(qual) { + isUnk = false + break + } + } + if isUnk { + attr := types.NewAttributeTrail(pat.variable) + for i := 0; i < len(qualPats) && i < len(newQuals); i++ { + if qual, ok := newQuals[i].(ConstantQualifier); ok { + switch v := qual.Value().Value().(type) { + case bool: + types.QualifyAttribute[bool](attr, v) + case float64: + types.QualifyAttribute[int64](attr, int64(v)) + case int64: + types.QualifyAttribute[int64](attr, v) + case string: + types.QualifyAttribute[string](attr, v) + case uint64: + types.QualifyAttribute[uint64](attr, v) + default: + types.QualifyAttribute[string](attr, fmt.Sprintf("%v", v)) + } + } else { + types.QualifyAttribute[string](attr, "*") + } + } + return types.NewUnknown(matchExprID, attr), nil + } + } + return nil, nil +} + +// attributeMatcher embeds the NamespacedAttribute interface which allows it to participate in +// AttributePattern matching against Attribute values without having to modify the code paths that +// identify Attributes in expressions. +type attributeMatcher struct { + NamespacedAttribute + qualifiers []Qualifier + fac *partialAttributeFactory +} + +// AddQualifier implements the Attribute interface method. +func (m *attributeMatcher) AddQualifier(qual Qualifier) (Attribute, error) { + // Add the qualifier to the embedded NamespacedAttribute. If the input to the Resolve + // method is not a PartialActivation, or does not match an unknown attribute pattern, the + // Resolve method is directly invoked on the underlying NamespacedAttribute. + _, err := m.NamespacedAttribute.AddQualifier(qual) + if err != nil { + return nil, err + } + // The attributeMatcher overloads TryResolve and will attempt to match unknown patterns against + // the variable name and qualifier set contained within the Attribute. These values are not + // directly inspectable on the top-level NamespacedAttribute interface and so are tracked within + // the attributeMatcher. + m.qualifiers = append(m.qualifiers, qual) + return m, nil +} + +// Resolve is an implementation of the NamespacedAttribute interface method which tests +// for matching unknown attribute patterns and returns types.Unknown if present. Otherwise, +// the standard Resolve logic applies. +func (m *attributeMatcher) Resolve(vars Activation) (any, error) { + id := m.NamespacedAttribute.ID() + // Bug in how partial activation is resolved, should search parents as well. + partial, isPartial := AsPartialActivation(vars) + if isPartial { + unk, err := m.fac.matchesUnknownPatterns( + partial, + id, + m.CandidateVariableNames(), + m.qualifiers) + if err != nil { + return nil, err + } + if unk != nil { + return unk, nil + } + } + return m.NamespacedAttribute.Resolve(vars) +} + +// Qualify is an implementation of the Qualifier interface method. +func (m *attributeMatcher) Qualify(vars Activation, obj any) (any, error) { + return attrQualify(m.fac, vars, obj, m) +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (m *attributeMatcher) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return attrQualifyIfPresent(m.fac, vars, obj, m, presenceOnly) +} diff --git a/vendor/github.com/google/cel-go/interpreter/attributes.go b/vendor/github.com/google/cel-go/interpreter/attributes.go new file mode 100644 index 0000000000..b1b3aacc83 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/attributes.go @@ -0,0 +1,1436 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "fmt" + "strings" + + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +// AttributeFactory provides methods creating Attribute and Qualifier values. +type AttributeFactory interface { + // AbsoluteAttribute creates an attribute that refers to a top-level variable name. + // + // Checked expressions generate absolute attribute with a single name. + // Parse-only expressions may have more than one possible absolute identifier when the + // expression is created within a container, e.g. package or namespace. + // + // When there is more than one name supplied to the AbsoluteAttribute call, the names + // must be in CEL's namespace resolution order. The name arguments provided here are + // returned in the same order as they were provided by the NamespacedAttribute + // CandidateVariableNames method. + AbsoluteAttribute(id int64, names ...string) NamespacedAttribute + + // ConditionalAttribute creates an attribute with two Attribute branches, where the Attribute + // that is resolved depends on the boolean evaluation of the input 'expr'. + ConditionalAttribute(id int64, expr Interpretable, t, f Attribute) Attribute + + // MaybeAttribute creates an attribute that refers to either a field selection or a namespaced + // variable name. + // + // Only expressions which have not been type-checked may generate oneof attributes. + MaybeAttribute(id int64, name string) Attribute + + // RelativeAttribute creates an attribute whose value is a qualification of a dynamic + // computation rather than a static variable reference. + RelativeAttribute(id int64, operand Interpretable) Attribute + + // NewQualifier creates a qualifier on the target object with a given value. + // + // The 'val' may be an Attribute or any proto-supported map key type: bool, int, string, uint. + // + // The qualifier may consider the object type being qualified, if present. If absent, the + // qualification should be considered dynamic and the qualification should still work, though + // it may be sub-optimal. + NewQualifier(objType *types.Type, qualID int64, val any, opt bool) (Qualifier, error) +} + +// Qualifier marker interface for designating different qualifier values and where they appear +// within field selections and index call expressions (`_[_]`). +type Qualifier interface { + // ID where the qualifier appears within an expression. + ID() int64 + + // IsOptional specifies whether the qualifier is optional. + // Instead of a direct qualification, an optional qualifier will be resolved via QualifyIfPresent + // rather than Qualify. A non-optional qualifier may also be resolved through QualifyIfPresent if + // the object to qualify is itself optional. + IsOptional() bool + + // Qualify performs a qualification, e.g. field selection, on the input object and returns + // the value of the access and whether the value was set. A non-nil value with a false presence + // test result indicates that the value being returned is the default value. + Qualify(vars Activation, obj any) (any, error) + + // QualifyIfPresent qualifies the object if the qualifier is declared or defined on the object. + // The 'presenceOnly' flag indicates that the value is not necessary, just a boolean status as + // to whether the qualifier is present. + QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) +} + +// ConstantQualifier interface embeds the Qualifier interface and provides an option to inspect the +// qualifier's constant value. +// +// Non-constant qualifiers are of Attribute type. +type ConstantQualifier interface { + Qualifier + + // Value returns the constant value associated with the qualifier. + Value() ref.Val +} + +// Attribute values are a variable or value with an optional set of qualifiers, such as field, key, +// or index accesses. +type Attribute interface { + Qualifier + + // AddQualifier adds a qualifier on the Attribute or error if the qualification is not a valid qualifier type. + AddQualifier(Qualifier) (Attribute, error) + + // Resolve returns the value of the Attribute and whether it was present given an Activation. + // For objects which support safe traversal, the value may be non-nil and the presence flag be false. + // + // If an error is encountered during attribute resolution, it will be returned immediately. + // If the attribute cannot be resolved within the Activation, the result must be: `nil`, `error` + // with the error indicating which variable was missing. + Resolve(Activation) (any, error) +} + +// NamespacedAttribute values are a variable within a namespace, and an optional set of qualifiers +// such as field, key, or index accesses. +type NamespacedAttribute interface { + Attribute + + // CandidateVariableNames returns the possible namespaced variable names for this Attribute in + // the CEL namespace resolution order. + CandidateVariableNames() []string + + // Qualifiers returns the list of qualifiers associated with the Attribute. + Qualifiers() []Qualifier +} + +// AttrFactoryOption specifies a functional option for configuring an attribute factory. +type AttrFactoryOption func(*attrFactory) *attrFactory + +// EnableErrorOnBadPresenceTest error generation when a presence test or optional field selection +// is performed on a primitive type. +func EnableErrorOnBadPresenceTest(value bool) AttrFactoryOption { + return func(fac *attrFactory) *attrFactory { + fac.errorOnBadPresenceTest = value + return fac + } +} + +// NewAttributeFactory returns a default AttributeFactory which is produces Attribute values +// capable of resolving types by simple names and qualify the values using the supported qualifier +// types: bool, int, string, and uint. +func NewAttributeFactory(cont *containers.Container, a types.Adapter, p types.Provider, opts ...AttrFactoryOption) AttributeFactory { + fac := &attrFactory{ + container: cont, + adapter: a, + provider: p, + } + for _, o := range opts { + fac = o(fac) + } + return fac +} + +type attrFactory struct { + container *containers.Container + adapter types.Adapter + provider types.Provider + + errorOnBadPresenceTest bool +} + +// AbsoluteAttribute refers to a variable value and an optional qualifier path. +// +// The namespaceNames represent the names the variable could have based on namespace +// resolution rules. +func (r *attrFactory) AbsoluteAttribute(id int64, names ...string) NamespacedAttribute { + return &absoluteAttribute{ + id: id, + namespaceNames: names, + qualifiers: []Qualifier{}, + adapter: r.adapter, + provider: r.provider, + fac: r, + errorOnBadPresenceTest: r.errorOnBadPresenceTest, + } +} + +// ConditionalAttribute supports the case where an attribute selection may occur on a conditional +// expression, e.g. (cond ? a : b).c +func (r *attrFactory) ConditionalAttribute(id int64, expr Interpretable, t, f Attribute) Attribute { + return &conditionalAttribute{ + id: id, + expr: expr, + truthy: t, + falsy: f, + adapter: r.adapter, + fac: r, + } +} + +// MaybeAttribute collects variants of unchecked AbsoluteAttribute values which could either be +// direct variable accesses or some combination of variable access with qualification. +func (r *attrFactory) MaybeAttribute(id int64, name string) Attribute { + return &maybeAttribute{ + id: id, + attrs: []NamespacedAttribute{ + r.AbsoluteAttribute(id, r.container.ResolveCandidateNames(name)...), + }, + adapter: r.adapter, + provider: r.provider, + fac: r, + } +} + +// RelativeAttribute refers to an expression and an optional qualifier path. +func (r *attrFactory) RelativeAttribute(id int64, operand Interpretable) Attribute { + return &relativeAttribute{ + id: id, + operand: operand, + qualifiers: []Qualifier{}, + adapter: r.adapter, + fac: r, + errorOnBadPresenceTest: r.errorOnBadPresenceTest, + } +} + +// NewQualifier is an implementation of the AttributeFactory interface. +func (r *attrFactory) NewQualifier(objType *types.Type, qualID int64, val any, opt bool) (Qualifier, error) { + // Before creating a new qualifier check to see if this is a protobuf message field access. + // If so, use the precomputed GetFrom qualification method rather than the standard + // stringQualifier. + str, isStr := val.(string) + if isStr && objType != nil && objType.Kind() == types.StructKind { + ft, found := r.provider.FindStructFieldType(objType.TypeName(), str) + if found && ft.IsSet != nil && ft.GetFrom != nil { + return &fieldQualifier{ + id: qualID, + Name: str, + FieldType: ft, + adapter: r.adapter, + optional: opt, + }, nil + } + } + return newQualifier(r.adapter, qualID, val, opt, r.errorOnBadPresenceTest) +} + +type absoluteAttribute struct { + id int64 + // namespaceNames represent the names the variable could have based on declared container + // (package) of the expression. + namespaceNames []string + qualifiers []Qualifier + adapter types.Adapter + provider types.Provider + fac AttributeFactory + + errorOnBadPresenceTest bool +} + +// ID implements the Attribute interface method. +func (a *absoluteAttribute) ID() int64 { + qualCount := len(a.qualifiers) + if qualCount == 0 { + return a.id + } + return a.qualifiers[qualCount-1].ID() +} + +// IsOptional returns trivially false for an attribute as the attribute represents a fully +// qualified variable name. If the attribute is used in an optional manner, then an attrQualifier +// is created and marks the attribute as optional. +func (a *absoluteAttribute) IsOptional() bool { + return false +} + +// AddQualifier implements the Attribute interface method. +func (a *absoluteAttribute) AddQualifier(qual Qualifier) (Attribute, error) { + a.qualifiers = append(a.qualifiers, qual) + return a, nil +} + +// CandidateVariableNames implements the NamespaceAttribute interface method. +func (a *absoluteAttribute) CandidateVariableNames() []string { + return a.namespaceNames +} + +// Qualifiers returns the list of Qualifier instances associated with the namespaced attribute. +func (a *absoluteAttribute) Qualifiers() []Qualifier { + return a.qualifiers +} + +// Qualify is an implementation of the Qualifier interface method. +func (a *absoluteAttribute) Qualify(vars Activation, obj any) (any, error) { + return attrQualify(a.fac, vars, obj, a) +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (a *absoluteAttribute) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return attrQualifyIfPresent(a.fac, vars, obj, a, presenceOnly) +} + +// String implements the Stringer interface method. +func (a *absoluteAttribute) String() string { + return fmt.Sprintf("id: %v, names: %v", a.id, a.namespaceNames) +} + +// Resolve returns the resolved Attribute value given the Activation, or error if the Attribute +// variable is not found, or if its Qualifiers cannot be applied successfully. +// +// If the variable name cannot be found as an Activation variable or in the TypeProvider as +// a type, then the result is `nil`, `error` with the error indicating the name of the first +// variable searched as missing. +func (a *absoluteAttribute) Resolve(vars Activation) (any, error) { + for _, nm := range a.namespaceNames { + // If the variable is found, process it. Otherwise, wait until the checks to + // determine whether the type is unknown before returning. + obj, found := vars.ResolveName(nm) + if found { + if celErr, ok := obj.(*types.Err); ok { + return nil, celErr.Unwrap() + } + obj, isOpt, err := applyQualifiers(vars, obj, a.qualifiers) + if err != nil { + return nil, err + } + if isOpt { + val := a.adapter.NativeToValue(obj) + if types.IsUnknown(val) { + return val, nil + } + return types.OptionalOf(val), nil + } + return obj, nil + } + // Attempt to resolve the qualified type name if the name is not a variable identifier. + typ, found := a.provider.FindIdent(nm) + if found { + if len(a.qualifiers) == 0 { + return typ, nil + } + } + } + var attrNames strings.Builder + for i, nm := range a.namespaceNames { + if i != 0 { + attrNames.WriteString(", ") + } + attrNames.WriteString(nm) + } + return nil, missingAttribute(attrNames.String()) +} + +type conditionalAttribute struct { + id int64 + expr Interpretable + truthy Attribute + falsy Attribute + adapter types.Adapter + fac AttributeFactory +} + +// ID is an implementation of the Attribute interface method. +func (a *conditionalAttribute) ID() int64 { + // There's a field access after the conditional. + if a.truthy.ID() == a.falsy.ID() { + return a.truthy.ID() + } + // Otherwise return the conditional id as the consistent id being tracked. + return a.id +} + +// IsOptional returns trivially false for an attribute as the attribute represents a fully +// qualified variable name. If the attribute is used in an optional manner, then an attrQualifier +// is created and marks the attribute as optional. +func (a *conditionalAttribute) IsOptional() bool { + return false +} + +// AddQualifier appends the same qualifier to both sides of the conditional, in effect managing +// the qualification of alternate attributes. +func (a *conditionalAttribute) AddQualifier(qual Qualifier) (Attribute, error) { + _, err := a.truthy.AddQualifier(qual) + if err != nil { + return nil, err + } + _, err = a.falsy.AddQualifier(qual) + if err != nil { + return nil, err + } + return a, nil +} + +// Qualify is an implementation of the Qualifier interface method. +func (a *conditionalAttribute) Qualify(vars Activation, obj any) (any, error) { + return attrQualify(a.fac, vars, obj, a) +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (a *conditionalAttribute) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return attrQualifyIfPresent(a.fac, vars, obj, a, presenceOnly) +} + +// Resolve evaluates the condition, and then resolves the truthy or falsy branch accordingly. +func (a *conditionalAttribute) Resolve(vars Activation) (any, error) { + val := a.expr.Eval(vars) + if val == types.True { + return a.truthy.Resolve(vars) + } + if val == types.False { + return a.falsy.Resolve(vars) + } + if types.IsUnknown(val) { + return val, nil + } + return nil, types.MaybeNoSuchOverloadErr(val).(*types.Err) +} + +// String is an implementation of the Stringer interface method. +func (a *conditionalAttribute) String() string { + return fmt.Sprintf("id: %v, truthy attribute: %v, falsy attribute: %v", a.id, a.truthy, a.falsy) +} + +type maybeAttribute struct { + id int64 + attrs []NamespacedAttribute + adapter types.Adapter + provider types.Provider + fac AttributeFactory +} + +// ID is an implementation of the Attribute interface method. +func (a *maybeAttribute) ID() int64 { + return a.attrs[0].ID() +} + +// IsOptional returns trivially false for an attribute as the attribute represents a fully +// qualified variable name. If the attribute is used in an optional manner, then an attrQualifier +// is created and marks the attribute as optional. +func (a *maybeAttribute) IsOptional() bool { + return false +} + +// AddQualifier adds a qualifier to each possible attribute variant, and also creates +// a new namespaced variable from the qualified value. +// +// The algorithm for building the maybe attribute is as follows: +// +// 1. Create a maybe attribute from a simple identifier when it occurs in a parsed-only expression +// +// mb = MaybeAttribute(, "a") +// +// Initializing the maybe attribute creates an absolute attribute internally which includes the +// possible namespaced names of the attribute. In this example, let's assume we are in namespace +// 'ns', then the maybe is either one of the following variable names: +// +// possible variables names -- ns.a, a +// +// 2. Adding a qualifier to the maybe means that the variable name could be a longer qualified +// name, or a field selection on one of the possible variable names produced earlier: +// +// mb.AddQualifier("b") +// +// possible variables names -- ns.a.b, a.b +// possible field selection -- ns.a['b'], a['b'] +// +// If none of the attributes within the maybe resolves a value, the result is an error. +func (a *maybeAttribute) AddQualifier(qual Qualifier) (Attribute, error) { + str := "" + isStr := false + cq, isConst := qual.(ConstantQualifier) + if isConst { + str, isStr = cq.Value().Value().(string) + } + var augmentedNames []string + // First add the qualifier to all existing attributes in the oneof. + for _, attr := range a.attrs { + if isStr && len(attr.Qualifiers()) == 0 { + candidateVars := attr.CandidateVariableNames() + augmentedNames = make([]string, len(candidateVars)) + for i, name := range candidateVars { + augmentedNames[i] = fmt.Sprintf("%s.%s", name, str) + } + } + _, err := attr.AddQualifier(qual) + if err != nil { + return nil, err + } + } + // Next, ensure the most specific variable / type reference is searched first. + if len(augmentedNames) != 0 { + a.attrs = append([]NamespacedAttribute{a.fac.AbsoluteAttribute(qual.ID(), augmentedNames...)}, a.attrs...) + } + return a, nil +} + +// Qualify is an implementation of the Qualifier interface method. +func (a *maybeAttribute) Qualify(vars Activation, obj any) (any, error) { + return attrQualify(a.fac, vars, obj, a) +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (a *maybeAttribute) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return attrQualifyIfPresent(a.fac, vars, obj, a, presenceOnly) +} + +// Resolve follows the variable resolution rules to determine whether the attribute is a variable +// or a field selection. +func (a *maybeAttribute) Resolve(vars Activation) (any, error) { + var maybeErr error + for _, attr := range a.attrs { + obj, err := attr.Resolve(vars) + // Return an error if one is encountered. + if err != nil { + resErr, ok := err.(*resolutionError) + if !ok { + return nil, err + } + // If this was not a missing variable error, return it. + if !resErr.isMissingAttribute() { + return nil, err + } + // When the variable is missing in a maybe attribute we defer erroring. + if maybeErr == nil { + maybeErr = resErr + } + // Continue attempting to resolve possible variables. + continue + } + return obj, nil + } + // Else, produce a no such attribute error. + return nil, maybeErr +} + +// String is an implementation of the Stringer interface method. +func (a *maybeAttribute) String() string { + return fmt.Sprintf("id: %v, attributes: %v", a.id, a.attrs) +} + +type relativeAttribute struct { + id int64 + operand Interpretable + qualifiers []Qualifier + adapter types.Adapter + fac AttributeFactory + + errorOnBadPresenceTest bool +} + +// ID is an implementation of the Attribute interface method. +func (a *relativeAttribute) ID() int64 { + qualCount := len(a.qualifiers) + if qualCount == 0 { + return a.id + } + return a.qualifiers[qualCount-1].ID() +} + +// IsOptional returns trivially false for an attribute as the attribute represents a fully +// qualified variable name. If the attribute is used in an optional manner, then an attrQualifier +// is created and marks the attribute as optional. +func (a *relativeAttribute) IsOptional() bool { + return false +} + +// AddQualifier implements the Attribute interface method. +func (a *relativeAttribute) AddQualifier(qual Qualifier) (Attribute, error) { + a.qualifiers = append(a.qualifiers, qual) + return a, nil +} + +// Qualify is an implementation of the Qualifier interface method. +func (a *relativeAttribute) Qualify(vars Activation, obj any) (any, error) { + return attrQualify(a.fac, vars, obj, a) +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (a *relativeAttribute) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return attrQualifyIfPresent(a.fac, vars, obj, a, presenceOnly) +} + +// Resolve expression value and qualifier relative to the expression result. +func (a *relativeAttribute) Resolve(vars Activation) (any, error) { + // First, evaluate the operand. + v := a.operand.Eval(vars) + if types.IsError(v) { + return nil, v.(*types.Err) + } + if types.IsUnknown(v) { + return v, nil + } + obj, isOpt, err := applyQualifiers(vars, v, a.qualifiers) + if err != nil { + return nil, err + } + if isOpt { + val := a.adapter.NativeToValue(obj) + if types.IsUnknown(val) { + return val, nil + } + return types.OptionalOf(val), nil + } + return obj, nil +} + +// String is an implementation of the Stringer interface method. +func (a *relativeAttribute) String() string { + return fmt.Sprintf("id: %v, operand: %v", a.id, a.operand) +} + +func newQualifier(adapter types.Adapter, id int64, v any, opt, errorOnBadPresenceTest bool) (Qualifier, error) { + var qual Qualifier + switch val := v.(type) { + case Attribute: + // Note, attributes are initially identified as non-optional since they represent a top-level + // field access; however, when used as a relative qualifier, e.g. a[?b.c], then an attrQualifier + // is created which intercepts the IsOptional check for the attribute in order to return the + // correct result. + return &attrQualifier{ + id: id, + Attribute: val, + optional: opt, + }, nil + case string: + qual = &stringQualifier{ + id: id, + value: val, + celValue: types.String(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case int: + qual = &intQualifier{ + id: id, + value: int64(val), + celValue: types.Int(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case int32: + qual = &intQualifier{ + id: id, + value: int64(val), + celValue: types.Int(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case int64: + qual = &intQualifier{ + id: id, + value: val, + celValue: types.Int(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case uint: + qual = &uintQualifier{ + id: id, + value: uint64(val), + celValue: types.Uint(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case uint32: + qual = &uintQualifier{ + id: id, + value: uint64(val), + celValue: types.Uint(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case uint64: + qual = &uintQualifier{ + id: id, + value: val, + celValue: types.Uint(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case bool: + qual = &boolQualifier{ + id: id, + value: val, + celValue: types.Bool(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case float32: + qual = &doubleQualifier{ + id: id, + value: float64(val), + celValue: types.Double(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case float64: + qual = &doubleQualifier{ + id: id, + value: val, + celValue: types.Double(val), + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case types.String: + qual = &stringQualifier{ + id: id, + value: string(val), + celValue: val, + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case types.Int: + qual = &intQualifier{ + id: id, + value: int64(val), + celValue: val, + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case types.Uint: + qual = &uintQualifier{ + id: id, + value: uint64(val), + celValue: val, + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case types.Bool: + qual = &boolQualifier{ + id: id, + value: bool(val), + celValue: val, + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case types.Double: + qual = &doubleQualifier{ + id: id, + value: float64(val), + celValue: val, + adapter: adapter, + optional: opt, + errorOnBadPresenceTest: errorOnBadPresenceTest, + } + case *types.Unknown: + qual = &unknownQualifier{id: id, value: val} + default: + if q, ok := v.(Qualifier); ok { + return q, nil + } + return nil, fmt.Errorf("invalid qualifier type: %T", v) + } + return qual, nil +} + +type attrQualifier struct { + id int64 + Attribute + optional bool +} + +// ID implements the Qualifier interface method and returns the qualification instruction id +// rather than the attribute id. +func (q *attrQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *attrQualifier) IsOptional() bool { + return q.optional +} + +type stringQualifier struct { + id int64 + value string + celValue ref.Val + adapter types.Adapter + optional bool + errorOnBadPresenceTest bool +} + +// ID is an implementation of the Qualifier interface method. +func (q *stringQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *stringQualifier) IsOptional() bool { + return q.optional +} + +// Qualify implements the Qualifier interface method. +func (q *stringQualifier) Qualify(vars Activation, obj any) (any, error) { + val, _, err := q.qualifyInternal(vars, obj, false, false) + return val, err +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (q *stringQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return q.qualifyInternal(vars, obj, true, presenceOnly) +} + +func (q *stringQualifier) qualifyInternal(vars Activation, obj any, presenceTest, presenceOnly bool) (any, bool, error) { + s := q.value + switch o := obj.(type) { + case map[string]any: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]string: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]int: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]int32: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]int64: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]uint: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]uint32: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]uint64: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]float32: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]float64: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + case map[string]bool: + obj, isKey := o[s] + if isKey { + return obj, true, nil + } + default: + return refQualify(q.adapter, obj, q.celValue, presenceTest, presenceOnly, q.errorOnBadPresenceTest) + } + if presenceTest { + return nil, false, nil + } + return nil, false, missingKey(q.celValue) +} + +// Value implements the ConstantQualifier interface +func (q *stringQualifier) Value() ref.Val { + return q.celValue +} + +type intQualifier struct { + id int64 + value int64 + celValue ref.Val + adapter types.Adapter + optional bool + errorOnBadPresenceTest bool +} + +// ID is an implementation of the Qualifier interface method. +func (q *intQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *intQualifier) IsOptional() bool { + return q.optional +} + +// Qualify implements the Qualifier interface method. +func (q *intQualifier) Qualify(vars Activation, obj any) (any, error) { + val, _, err := q.qualifyInternal(vars, obj, false, false) + return val, err +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (q *intQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return q.qualifyInternal(vars, obj, true, presenceOnly) +} + +func (q *intQualifier) qualifyInternal(vars Activation, obj any, presenceTest, presenceOnly bool) (any, bool, error) { + i := q.value + var isMap bool + switch o := obj.(type) { + // The specialized map types supported by an int qualifier are considerably fewer than the set + // of specialized map types supported by string qualifiers since they are less frequently used + // than string-based map keys. Additional specializations may be added in the future if + // desired. + case map[int]any: + isMap = true + obj, isKey := o[int(i)] + if isKey { + return obj, true, nil + } + case map[int32]any: + isMap = true + obj, isKey := o[int32(i)] + if isKey { + return obj, true, nil + } + case map[int64]any: + isMap = true + obj, isKey := o[i] + if isKey { + return obj, true, nil + } + case []any: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []string: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []int: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []int32: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []int64: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []uint: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []uint32: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []uint64: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []float32: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []float64: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + case []bool: + isIndex := i >= 0 && i < int64(len(o)) + if isIndex { + return o[i], true, nil + } + default: + return refQualify(q.adapter, obj, q.celValue, presenceTest, presenceOnly, q.errorOnBadPresenceTest) + } + if presenceTest { + return nil, false, nil + } + if isMap { + return nil, false, missingKey(q.celValue) + } + return nil, false, missingIndex(q.celValue) +} + +// Value implements the ConstantQualifier interface +func (q *intQualifier) Value() ref.Val { + return q.celValue +} + +type uintQualifier struct { + id int64 + value uint64 + celValue ref.Val + adapter types.Adapter + optional bool + errorOnBadPresenceTest bool +} + +// ID is an implementation of the Qualifier interface method. +func (q *uintQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *uintQualifier) IsOptional() bool { + return q.optional +} + +// Qualify implements the Qualifier interface method. +func (q *uintQualifier) Qualify(vars Activation, obj any) (any, error) { + val, _, err := q.qualifyInternal(vars, obj, false, false) + return val, err +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (q *uintQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return q.qualifyInternal(vars, obj, true, presenceOnly) +} + +func (q *uintQualifier) qualifyInternal(vars Activation, obj any, presenceTest, presenceOnly bool) (any, bool, error) { + u := q.value + switch o := obj.(type) { + // The specialized map types supported by a uint qualifier are considerably fewer than the set + // of specialized map types supported by string qualifiers since they are less frequently used + // than string-based map keys. Additional specializations may be added in the future if + // desired. + case map[uint]any: + obj, isKey := o[uint(u)] + if isKey { + return obj, true, nil + } + case map[uint32]any: + obj, isKey := o[uint32(u)] + if isKey { + return obj, true, nil + } + case map[uint64]any: + obj, isKey := o[u] + if isKey { + return obj, true, nil + } + default: + return refQualify(q.adapter, obj, q.celValue, presenceTest, presenceOnly, q.errorOnBadPresenceTest) + } + if presenceTest { + return nil, false, nil + } + return nil, false, missingKey(q.celValue) +} + +// Value implements the ConstantQualifier interface +func (q *uintQualifier) Value() ref.Val { + return q.celValue +} + +type boolQualifier struct { + id int64 + value bool + celValue ref.Val + adapter types.Adapter + optional bool + errorOnBadPresenceTest bool +} + +// ID is an implementation of the Qualifier interface method. +func (q *boolQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *boolQualifier) IsOptional() bool { + return q.optional +} + +// Qualify implements the Qualifier interface method. +func (q *boolQualifier) Qualify(vars Activation, obj any) (any, error) { + val, _, err := q.qualifyInternal(vars, obj, false, false) + return val, err +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (q *boolQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return q.qualifyInternal(vars, obj, true, presenceOnly) +} + +func (q *boolQualifier) qualifyInternal(vars Activation, obj any, presenceTest, presenceOnly bool) (any, bool, error) { + b := q.value + switch o := obj.(type) { + case map[bool]any: + obj, isKey := o[b] + if isKey { + return obj, true, nil + } + default: + return refQualify(q.adapter, obj, q.celValue, presenceTest, presenceOnly, q.errorOnBadPresenceTest) + } + if presenceTest { + return nil, false, nil + } + return nil, false, missingKey(q.celValue) +} + +// Value implements the ConstantQualifier interface +func (q *boolQualifier) Value() ref.Val { + return q.celValue +} + +// fieldQualifier indicates that the qualification is a well-defined field with a known +// field type. When the field type is known this can be used to improve the speed and +// efficiency of field resolution. +type fieldQualifier struct { + id int64 + Name string + FieldType *types.FieldType + adapter types.Adapter + optional bool +} + +// ID is an implementation of the Qualifier interface method. +func (q *fieldQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *fieldQualifier) IsOptional() bool { + return q.optional +} + +// Qualify implements the Qualifier interface method. +func (q *fieldQualifier) Qualify(vars Activation, obj any) (any, error) { + if rv, ok := obj.(ref.Val); ok { + obj = rv.Value() + } + val, err := q.FieldType.GetFrom(obj) + if err != nil { + return nil, err + } + return val, nil +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (q *fieldQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + if rv, ok := obj.(ref.Val); ok { + obj = rv.Value() + } + if !q.FieldType.IsSet(obj) { + return nil, false, nil + } + if presenceOnly { + return nil, true, nil + } + val, err := q.FieldType.GetFrom(obj) + if err != nil { + return nil, false, err + } + return val, true, nil +} + +// Value implements the ConstantQualifier interface +func (q *fieldQualifier) Value() ref.Val { + return types.String(q.Name) +} + +// doubleQualifier qualifies a CEL object, map, or list using a double value. +// +// This qualifier is used for working with dynamic data like JSON or protobuf.Any where the value +// type may not be known ahead of time and may not conform to the standard types supported as valid +// protobuf map key types. +type doubleQualifier struct { + id int64 + value float64 + celValue ref.Val + adapter types.Adapter + optional bool + errorOnBadPresenceTest bool +} + +// ID is an implementation of the Qualifier interface method. +func (q *doubleQualifier) ID() int64 { + return q.id +} + +// IsOptional implements the Qualifier interface method. +func (q *doubleQualifier) IsOptional() bool { + return q.optional +} + +// Qualify implements the Qualifier interface method. +func (q *doubleQualifier) Qualify(vars Activation, obj any) (any, error) { + val, _, err := q.qualifyInternal(vars, obj, false, false) + return val, err +} + +func (q *doubleQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return q.qualifyInternal(vars, obj, true, presenceOnly) +} + +func (q *doubleQualifier) qualifyInternal(vars Activation, obj any, presenceTest, presenceOnly bool) (any, bool, error) { + return refQualify(q.adapter, obj, q.celValue, presenceTest, presenceOnly, q.errorOnBadPresenceTest) +} + +// Value implements the ConstantQualifier interface +func (q *doubleQualifier) Value() ref.Val { + return q.celValue +} + +// unknownQualifier is a simple qualifier which always returns a preconfigured set of unknown values +// for any value subject to qualification. This is consistent with CEL's unknown handling elsewhere. +type unknownQualifier struct { + id int64 + value *types.Unknown +} + +// ID is an implementation of the Qualifier interface method. +func (q *unknownQualifier) ID() int64 { + return q.id +} + +// IsOptional returns trivially false as an the unknown value is always returned. +func (q *unknownQualifier) IsOptional() bool { + return false +} + +// Qualify returns the unknown value associated with this qualifier. +func (q *unknownQualifier) Qualify(vars Activation, obj any) (any, error) { + return q.value, nil +} + +// QualifyIfPresent is an implementation of the Qualifier interface method. +func (q *unknownQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return q.value, true, nil +} + +// Value implements the ConstantQualifier interface +func (q *unknownQualifier) Value() ref.Val { + return q.value +} + +func applyQualifiers(vars Activation, obj any, qualifiers []Qualifier) (any, bool, error) { + optObj, isOpt := obj.(*types.Optional) + if isOpt { + if !optObj.HasValue() { + return optObj, false, nil + } + obj = optObj.GetValue().Value() + } + + var err error + for _, qual := range qualifiers { + var qualObj any + isOpt = isOpt || qual.IsOptional() + if isOpt { + var present bool + qualObj, present, err = qual.QualifyIfPresent(vars, obj, false) + if err != nil { + return nil, false, err + } + if !present { + // We return optional none here with a presence of 'false' as the layers + // above will attempt to call types.OptionalOf() on a present value if any + // of the qualifiers is optional. + return types.OptionalNone, false, nil + } + } else { + qualObj, err = qual.Qualify(vars, obj) + if err != nil { + return nil, false, err + } + } + obj = qualObj + } + return obj, isOpt, nil +} + +// attrQualify performs a qualification using the result of an attribute evaluation. +func attrQualify(fac AttributeFactory, vars Activation, obj any, qualAttr Attribute) (any, error) { + val, err := qualAttr.Resolve(vars) + if err != nil { + return nil, err + } + qual, err := fac.NewQualifier(nil, qualAttr.ID(), val, qualAttr.IsOptional()) + if err != nil { + return nil, err + } + return qual.Qualify(vars, obj) +} + +// attrQualifyIfPresent conditionally performs the qualification of the result of attribute is present +// on the target object. +func attrQualifyIfPresent(fac AttributeFactory, vars Activation, obj any, qualAttr Attribute, + presenceOnly bool) (any, bool, error) { + val, err := qualAttr.Resolve(vars) + if err != nil { + return nil, false, err + } + qual, err := fac.NewQualifier(nil, qualAttr.ID(), val, qualAttr.IsOptional()) + if err != nil { + return nil, false, err + } + return qual.QualifyIfPresent(vars, obj, presenceOnly) +} + +// refQualify attempts to convert the value to a CEL value and then uses reflection methods to try and +// apply the qualifier with the option to presence test field accesses before retrieving field values. +func refQualify(adapter types.Adapter, obj any, idx ref.Val, presenceTest, presenceOnly, errorOnBadPresenceTest bool) (ref.Val, bool, error) { + celVal := adapter.NativeToValue(obj) + switch v := celVal.(type) { + case *types.Unknown: + return v, true, nil + case *types.Err: + return nil, false, v + case traits.Mapper: + val, found := v.Find(idx) + // If the index is of the wrong type for the map, then it is possible + // for the Find call to produce an error. + if types.IsError(val) { + return nil, false, val.(*types.Err) + } + if found { + return val, true, nil + } + if presenceTest { + return nil, false, nil + } + return nil, false, missingKey(idx) + case traits.Lister: + // If the index argument is not a valid numeric type, then it is possible + // for the index operation to produce an error. + i, err := types.IndexOrError(idx) + if err != nil { + return nil, false, err + } + celIndex := types.Int(i) + if i >= 0 && celIndex < v.Size().(types.Int) { + return v.Get(idx), true, nil + } + if presenceTest { + return nil, false, nil + } + return nil, false, missingIndex(idx) + case traits.Indexer: + if presenceTest { + ft, ok := v.(traits.FieldTester) + if ok { + presence := ft.IsSet(idx) + if types.IsError(presence) { + return nil, false, presence.(*types.Err) + } + // If not found or presence only test, then return. + // Otherwise, if found, obtain the value later on. + if presenceOnly || presence == types.False { + return nil, presence == types.True, nil + } + } + } + val := v.Get(idx) + if types.IsError(val) { + return nil, false, val.(*types.Err) + } + return val, true, nil + default: + if presenceTest && !errorOnBadPresenceTest { + return nil, false, nil + } + return nil, false, missingKey(idx) + } +} + +// resolutionError is a custom error type which encodes the different error states which may +// occur during attribute resolution. +type resolutionError struct { + missingAttribute string + missingIndex ref.Val + missingKey ref.Val +} + +func (e *resolutionError) isMissingAttribute() bool { + return e.missingAttribute != "" +} + +func missingIndex(missing ref.Val) *resolutionError { + return &resolutionError{ + missingIndex: missing, + } +} + +func missingKey(missing ref.Val) *resolutionError { + return &resolutionError{ + missingKey: missing, + } +} + +func missingAttribute(attr string) *resolutionError { + return &resolutionError{ + missingAttribute: attr, + } +} + +// Error implements the error interface method. +func (e *resolutionError) Error() string { + if e.missingKey != nil { + return fmt.Sprintf("no such key: %v", e.missingKey) + } + if e.missingIndex != nil { + return fmt.Sprintf("index out of bounds: %v", e.missingIndex) + } + if e.missingAttribute != "" { + return fmt.Sprintf("no such attribute(s): %s", e.missingAttribute) + } + return "invalid attribute" +} + +// Is implements the errors.Is() method used by more recent versions of Go. +func (e *resolutionError) Is(err error) bool { + return err.Error() == e.Error() +} diff --git a/vendor/github.com/google/cel-go/interpreter/decorators.go b/vendor/github.com/google/cel-go/interpreter/decorators.go new file mode 100644 index 0000000000..502db35fc0 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/decorators.go @@ -0,0 +1,272 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +// InterpretableDecorator is a functional interface for decorating or replacing +// Interpretable expression nodes at construction time. +type InterpretableDecorator func(Interpretable) (Interpretable, error) + +// decObserveEval records evaluation state into an EvalState object. +func decObserveEval(observer EvalObserver) InterpretableDecorator { + return func(i Interpretable) (Interpretable, error) { + switch inst := i.(type) { + case *evalWatch, *evalWatchAttr, *evalWatchConst, *evalWatchConstructor: + // these instruction are already watching, return straight-away. + return i, nil + case InterpretableAttribute: + return &evalWatchAttr{ + InterpretableAttribute: inst, + observer: observer, + }, nil + case InterpretableConst: + return &evalWatchConst{ + InterpretableConst: inst, + observer: observer, + }, nil + case InterpretableConstructor: + return &evalWatchConstructor{ + constructor: inst, + observer: observer, + }, nil + default: + return &evalWatch{ + Interpretable: i, + observer: observer, + }, nil + } + } +} + +// decInterruptFolds creates an intepretable decorator which marks comprehensions as interruptable +// where the interrupt state is communicated via a hidden variable on the Activation. +func decInterruptFolds() InterpretableDecorator { + return func(i Interpretable) (Interpretable, error) { + fold, ok := i.(*evalFold) + if !ok { + return i, nil + } + fold.interruptable = true + return fold, nil + } +} + +// decDisableShortcircuits ensures that all branches of an expression will be evaluated, no short-circuiting. +func decDisableShortcircuits() InterpretableDecorator { + return func(i Interpretable) (Interpretable, error) { + switch expr := i.(type) { + case *evalOr: + return &evalExhaustiveOr{ + id: expr.id, + terms: expr.terms, + }, nil + case *evalAnd: + return &evalExhaustiveAnd{ + id: expr.id, + terms: expr.terms, + }, nil + case *evalFold: + expr.exhaustive = true + return expr, nil + case InterpretableAttribute: + cond, isCond := expr.Attr().(*conditionalAttribute) + if isCond { + return &evalExhaustiveConditional{ + id: cond.id, + attr: cond, + adapter: expr.Adapter(), + }, nil + } + } + return i, nil + } +} + +// decOptimize optimizes the program plan by looking for common evaluation patterns and +// conditionally precomputing the result. +// - build list and map values with constant elements. +// - convert 'in' operations to set membership tests if possible. +func decOptimize() InterpretableDecorator { + return func(i Interpretable) (Interpretable, error) { + switch inst := i.(type) { + case *evalList: + return maybeBuildListLiteral(i, inst) + case *evalMap: + return maybeBuildMapLiteral(i, inst) + case InterpretableCall: + if inst.OverloadID() == overloads.InList { + return maybeOptimizeSetMembership(i, inst) + } + if overloads.IsTypeConversionFunction(inst.Function()) { + return maybeOptimizeConstUnary(i, inst) + } + } + return i, nil + } +} + +// decRegexOptimizer compiles regex pattern string constants. +func decRegexOptimizer(regexOptimizations ...*RegexOptimization) InterpretableDecorator { + functionMatchMap := make(map[string]*RegexOptimization) + overloadMatchMap := make(map[string]*RegexOptimization) + for _, m := range regexOptimizations { + functionMatchMap[m.Function] = m + if m.OverloadID != "" { + overloadMatchMap[m.OverloadID] = m + } + } + + return func(i Interpretable) (Interpretable, error) { + call, ok := i.(InterpretableCall) + if !ok { + return i, nil + } + + var matcher *RegexOptimization + var found bool + if call.OverloadID() != "" { + matcher, found = overloadMatchMap[call.OverloadID()] + } + if !found { + matcher, found = functionMatchMap[call.Function()] + } + if !found || matcher.RegexIndex >= len(call.Args()) { + return i, nil + } + args := call.Args() + regexArg := args[matcher.RegexIndex] + regexStr, isConst := regexArg.(InterpretableConst) + if !isConst { + return i, nil + } + pattern, ok := regexStr.Value().(types.String) + if !ok { + return i, nil + } + return matcher.Factory(call, string(pattern)) + } +} + +func maybeOptimizeConstUnary(i Interpretable, call InterpretableCall) (Interpretable, error) { + args := call.Args() + if len(args) != 1 { + return i, nil + } + _, isConst := args[0].(InterpretableConst) + if !isConst { + return i, nil + } + val := call.Eval(EmptyActivation()) + if types.IsError(val) { + return nil, val.(*types.Err) + } + return NewConstValue(call.ID(), val), nil +} + +func maybeBuildListLiteral(i Interpretable, l *evalList) (Interpretable, error) { + for _, elem := range l.elems { + _, isConst := elem.(InterpretableConst) + if !isConst { + return i, nil + } + } + return NewConstValue(l.ID(), l.Eval(EmptyActivation())), nil +} + +func maybeBuildMapLiteral(i Interpretable, mp *evalMap) (Interpretable, error) { + for idx, key := range mp.keys { + _, isConst := key.(InterpretableConst) + if !isConst { + return i, nil + } + _, isConst = mp.vals[idx].(InterpretableConst) + if !isConst { + return i, nil + } + } + return NewConstValue(mp.ID(), mp.Eval(EmptyActivation())), nil +} + +// maybeOptimizeSetMembership may convert an 'in' operation against a list to map key membership +// test if the following conditions are true: +// - the list is a constant with homogeneous element types. +// - the elements are all of primitive type. +func maybeOptimizeSetMembership(i Interpretable, inlist InterpretableCall) (Interpretable, error) { + args := inlist.Args() + lhs := args[0] + rhs := args[1] + l, isConst := rhs.(InterpretableConst) + if !isConst { + return i, nil + } + // When the incoming binary call is flagged with as the InList overload, the value will + // always be convertible to a `traits.Lister` type. + list := l.Value().(traits.Lister) + if list.Size() == types.IntZero { + return NewConstValue(inlist.ID(), types.False), nil + } + it := list.Iterator() + valueSet := make(map[ref.Val]ref.Val) + for it.HasNext() == types.True { + elem := it.Next() + if !types.IsPrimitiveType(elem) || elem.Type() == types.BytesType { + // Note, non-primitive type are not yet supported, and []byte isn't hashable. + return i, nil + } + valueSet[elem] = types.True + switch ev := elem.(type) { + case types.Double: + iv := ev.ConvertToType(types.IntType) + // Ensure that only lossless conversions are added to the set + if !types.IsError(iv) && iv.Equal(ev) == types.True { + valueSet[iv] = types.True + } + // Ensure that only lossless conversions are added to the set + uv := ev.ConvertToType(types.UintType) + if !types.IsError(uv) && uv.Equal(ev) == types.True { + valueSet[uv] = types.True + } + case types.Int: + dv := ev.ConvertToType(types.DoubleType) + if !types.IsError(dv) { + valueSet[dv] = types.True + } + uv := ev.ConvertToType(types.UintType) + if !types.IsError(uv) { + valueSet[uv] = types.True + } + case types.Uint: + dv := ev.ConvertToType(types.DoubleType) + if !types.IsError(dv) { + valueSet[dv] = types.True + } + iv := ev.ConvertToType(types.IntType) + if !types.IsError(iv) { + valueSet[iv] = types.True + } + } + } + return &evalSetMembership{ + inst: inlist, + arg: lhs, + valueSet: valueSet, + }, nil +} diff --git a/vendor/github.com/google/cel-go/interpreter/dispatcher.go b/vendor/github.com/google/cel-go/interpreter/dispatcher.go new file mode 100644 index 0000000000..8f0bdb7b8e --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/dispatcher.go @@ -0,0 +1,100 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "fmt" + + "github.com/google/cel-go/common/functions" +) + +// Dispatcher resolves function calls to their appropriate overload. +type Dispatcher interface { + // Add one or more overloads, returning an error if any Overload has the same Overload#Name. + Add(overloads ...*functions.Overload) error + + // FindOverload returns an Overload definition matching the provided name. + FindOverload(overload string) (*functions.Overload, bool) + + // OverloadIds returns the set of all overload identifiers configured for dispatch. + OverloadIds() []string +} + +// NewDispatcher returns an empty Dispatcher instance. +func NewDispatcher() Dispatcher { + return &defaultDispatcher{ + overloads: make(map[string]*functions.Overload)} +} + +// ExtendDispatcher returns a Dispatcher which inherits the overloads of its parent, and +// provides an isolation layer between built-ins and extension functions which is useful +// for forward compatibility. +func ExtendDispatcher(parent Dispatcher) Dispatcher { + return &defaultDispatcher{ + parent: parent, + overloads: make(map[string]*functions.Overload)} +} + +// overloadMap helper type for indexing overloads by function name. +type overloadMap map[string]*functions.Overload + +// defaultDispatcher struct which contains an overload map. +type defaultDispatcher struct { + parent Dispatcher + overloads overloadMap +} + +// Add implements the Dispatcher.Add interface method. +func (d *defaultDispatcher) Add(overloads ...*functions.Overload) error { + for _, o := range overloads { + // add the overload unless an overload of the same name has already been provided. + if _, found := d.overloads[o.Operator]; found { + return fmt.Errorf("overload already exists '%s'", o.Operator) + } + // index the overload by function name. + d.overloads[o.Operator] = o + } + return nil +} + +// FindOverload implements the Dispatcher.FindOverload interface method. +func (d *defaultDispatcher) FindOverload(overload string) (*functions.Overload, bool) { + o, found := d.overloads[overload] + // Attempt to dispatch to an overload defined in the parent. + if !found && d.parent != nil { + return d.parent.FindOverload(overload) + } + return o, found +} + +// OverloadIds implements the Dispatcher interface method. +func (d *defaultDispatcher) OverloadIds() []string { + i := 0 + overloads := make([]string, len(d.overloads)) + for name := range d.overloads { + overloads[i] = name + i++ + } + if d.parent == nil { + return overloads + } + parentOverloads := d.parent.OverloadIds() + for _, pName := range parentOverloads { + if _, found := d.overloads[pName]; !found { + overloads = append(overloads, pName) + } + } + return overloads +} diff --git a/vendor/github.com/google/cel-go/interpreter/evalstate.go b/vendor/github.com/google/cel-go/interpreter/evalstate.go new file mode 100644 index 0000000000..4bdd1fdc73 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/evalstate.go @@ -0,0 +1,79 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "github.com/google/cel-go/common/types/ref" +) + +// EvalState tracks the values associated with expression ids during execution. +type EvalState interface { + // IDs returns the list of ids with recorded values. + IDs() []int64 + + // Value returns the observed value of the given expression id if found, and a nil false + // result if not. + Value(int64) (ref.Val, bool) + + // SetValue sets the observed value of the expression id. + SetValue(int64, ref.Val) + + // Reset clears the previously recorded expression values. + Reset() +} + +// evalState permits the mutation of evaluation state for a given expression id. +type evalState struct { + values map[int64]ref.Val +} + +// NewEvalState returns an EvalState instanced used to observe the intermediate +// evaluations of an expression. +func NewEvalState() EvalState { + return &evalState{ + values: make(map[int64]ref.Val), + } +} + +// IDs implements the EvalState interface method. +func (s *evalState) IDs() []int64 { + var ids []int64 + for k, v := range s.values { + if v != nil { + ids = append(ids, k) + } + } + return ids +} + +// Value is an implementation of the EvalState interface method. +func (s *evalState) Value(exprID int64) (ref.Val, bool) { + val, found := s.values[exprID] + return val, found +} + +// SetValue is an implementation of the EvalState interface method. +func (s *evalState) SetValue(exprID int64, val ref.Val) { + if val == nil { + delete(s.values, exprID) + } else { + s.values[exprID] = val + } +} + +// Reset implements the EvalState interface method. +func (s *evalState) Reset() { + s.values = map[int64]ref.Val{} +} diff --git a/vendor/github.com/google/cel-go/interpreter/interpretable.go b/vendor/github.com/google/cel-go/interpreter/interpretable.go new file mode 100644 index 0000000000..96b5a8ffc0 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/interpretable.go @@ -0,0 +1,1473 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "fmt" + "sync" + + "github.com/google/cel-go/common/functions" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +// Interpretable can accept a given Activation and produce a value along with +// an accompanying EvalState which can be used to inspect whether additional +// data might be necessary to complete the evaluation. +type Interpretable interface { + // ID value corresponding to the expression node. + ID() int64 + + // Eval an Activation to produce an output. + Eval(activation Activation) ref.Val +} + +// InterpretableConst interface for tracking whether the Interpretable is a constant value. +type InterpretableConst interface { + Interpretable + + // Value returns the constant value of the instruction. + Value() ref.Val +} + +// InterpretableAttribute interface for tracking whether the Interpretable is an attribute. +type InterpretableAttribute interface { + Interpretable + + // Attr returns the Attribute value. + Attr() Attribute + + // Adapter returns the type adapter to be used for adapting resolved Attribute values. + Adapter() types.Adapter + + // AddQualifier proxies the Attribute.AddQualifier method. + // + // Note, this method may mutate the current attribute state. If the desire is to clone the + // Attribute, the Attribute should first be copied before adding the qualifier. Attributes + // are not copyable by default, so this is a capable that would need to be added to the + // AttributeFactory or specifically to the underlying Attribute implementation. + AddQualifier(Qualifier) (Attribute, error) + + // Qualify replicates the Attribute.Qualify method to permit extension and interception + // of object qualification. + Qualify(vars Activation, obj any) (any, error) + + // QualifyIfPresent qualifies the object if the qualifier is declared or defined on the object. + // The 'presenceOnly' flag indicates that the value is not necessary, just a boolean status as + // to whether the qualifier is present. + QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) + + // IsOptional indicates whether the resulting value is an optional type. + IsOptional() bool + + // Resolve returns the value of the Attribute given the current Activation. + Resolve(Activation) (any, error) +} + +// InterpretableCall interface for inspecting Interpretable instructions related to function calls. +type InterpretableCall interface { + Interpretable + + // Function returns the function name as it appears in text or mangled operator name as it + // appears in the operators.go file. + Function() string + + // OverloadID returns the overload id associated with the function specialization. + // Overload ids are stable across language boundaries and can be treated as synonymous with a + // unique function signature. + OverloadID() string + + // Args returns the normalized arguments to the function overload. + // For receiver-style functions, the receiver target is arg 0. + Args() []Interpretable +} + +// InterpretableConstructor interface for inspecting Interpretable instructions that initialize a list, map +// or struct. +type InterpretableConstructor interface { + Interpretable + + // InitVals returns all the list elements, map key and values or struct field values. + InitVals() []Interpretable + + // Type returns the type constructed. + Type() ref.Type +} + +// ObservableInterpretable is an Interpretable which supports stateful observation, such as tracing +// or cost-tracking. +type ObservableInterpretable struct { + Interpretable + observers []StatefulObserver +} + +// ID implements the Interpretable method to get the expression id associated with the step. +func (oi *ObservableInterpretable) ID() int64 { + return oi.Interpretable.ID() +} + +// Eval proxies to the ObserveEval method while invoking a no-op callback to report the observations. +func (oi *ObservableInterpretable) Eval(vars Activation) ref.Val { + return oi.ObserveEval(vars, func(any) {}) +} + +// ObserveEval evaluates an interpretable and performs per-evaluation state-tracking. +// +// This method is concurrency safe and the expectation is that the observer function will use +// a switch statement to determine the type of the state which has been reported back from the call. +func (oi *ObservableInterpretable) ObserveEval(vars Activation, observer func(any)) ref.Val { + var err error + // Initialize the state needed for the observers to function. + for _, obs := range oi.observers { + vars, err = obs.InitState(vars) + if err != nil { + return types.WrapErr(err) + } + // Provide an initial reference to the state to ensure state is available + // even in cases of interrupting errors generated during evaluation. + observer(obs.GetState(vars)) + } + result := oi.Interpretable.Eval(vars) + // Get the state which needs to be reported back as having been observed. + for _, obs := range oi.observers { + observer(obs.GetState(vars)) + } + return result +} + +// Core Interpretable implementations used during the program planning phase. + +type evalTestOnly struct { + id int64 + InterpretableAttribute +} + +// ID implements the Interpretable interface method. +func (test *evalTestOnly) ID() int64 { + return test.id +} + +// Eval implements the Interpretable interface method. +func (test *evalTestOnly) Eval(ctx Activation) ref.Val { + val, err := test.Resolve(ctx) + // Return an error if the resolve step fails + if err != nil { + return types.LabelErrNode(test.id, types.WrapErr(err)) + } + if optVal, isOpt := val.(*types.Optional); isOpt { + return types.Bool(optVal.HasValue()) + } + return test.Adapter().NativeToValue(val) +} + +// AddQualifier appends a qualifier that will always and only perform a presence test. +func (test *evalTestOnly) AddQualifier(q Qualifier) (Attribute, error) { + cq, ok := q.(ConstantQualifier) + if !ok { + return nil, fmt.Errorf("test only expressions must have constant qualifiers: %v", q) + } + return test.InterpretableAttribute.AddQualifier(&testOnlyQualifier{ConstantQualifier: cq}) +} + +type testOnlyQualifier struct { + ConstantQualifier +} + +// Qualify determines whether the test-only qualifier is present on the input object. +func (q *testOnlyQualifier) Qualify(vars Activation, obj any) (any, error) { + out, present, err := q.ConstantQualifier.QualifyIfPresent(vars, obj, true) + if err != nil { + return nil, err + } + if unk, isUnk := out.(types.Unknown); isUnk { + return unk, nil + } + return present, nil +} + +// QualifyIfPresent returns whether the target field in the test-only expression is present. +func (q *testOnlyQualifier) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + // Only ever test for presence. + return q.ConstantQualifier.QualifyIfPresent(vars, obj, true) +} + +// QualifierValueEquals determines whether the test-only constant qualifier equals the input value. +func (q *testOnlyQualifier) QualifierValueEquals(value any) bool { + // The input qualifier will always be of type string + return q.ConstantQualifier.Value().Value() == value +} + +// NewConstValue creates a new constant valued Interpretable. +func NewConstValue(id int64, val ref.Val) InterpretableConst { + return &evalConst{ + id: id, + val: val, + } +} + +type evalConst struct { + id int64 + val ref.Val +} + +// ID implements the Interpretable interface method. +func (cons *evalConst) ID() int64 { + return cons.id +} + +// Eval implements the Interpretable interface method. +func (cons *evalConst) Eval(ctx Activation) ref.Val { + return cons.val +} + +// Value implements the InterpretableConst interface method. +func (cons *evalConst) Value() ref.Val { + return cons.val +} + +type evalOr struct { + id int64 + terms []Interpretable +} + +// ID implements the Interpretable interface method. +func (or *evalOr) ID() int64 { + return or.id +} + +// Eval implements the Interpretable interface method. +func (or *evalOr) Eval(ctx Activation) ref.Val { + var err ref.Val = nil + var unk *types.Unknown + for _, term := range or.terms { + val := term.Eval(ctx) + boolVal, ok := val.(types.Bool) + // short-circuit on true. + if ok && boolVal == types.True { + return types.True + } + if !ok { + isUnk := false + unk, isUnk = types.MaybeMergeUnknowns(val, unk) + if !isUnk && err == nil { + if types.IsError(val) { + err = val + } else { + err = types.MaybeNoSuchOverloadErr(val) + } + err = types.LabelErrNode(or.id, err) + } + } + } + if unk != nil { + return unk + } + if err != nil { + return err + } + return types.False +} + +type evalAnd struct { + id int64 + terms []Interpretable +} + +// ID implements the Interpretable interface method. +func (and *evalAnd) ID() int64 { + return and.id +} + +// Eval implements the Interpretable interface method. +func (and *evalAnd) Eval(ctx Activation) ref.Val { + var err ref.Val = nil + var unk *types.Unknown + for _, term := range and.terms { + val := term.Eval(ctx) + boolVal, ok := val.(types.Bool) + // short-circuit on false. + if ok && boolVal == types.False { + return types.False + } + if !ok { + isUnk := false + unk, isUnk = types.MaybeMergeUnknowns(val, unk) + if !isUnk && err == nil { + if types.IsError(val) { + err = val + } else { + err = types.MaybeNoSuchOverloadErr(val) + } + err = types.LabelErrNode(and.id, err) + } + } + } + if unk != nil { + return unk + } + if err != nil { + return err + } + return types.True +} + +type evalEq struct { + id int64 + lhs Interpretable + rhs Interpretable +} + +// ID implements the Interpretable interface method. +func (eq *evalEq) ID() int64 { + return eq.id +} + +// Eval implements the Interpretable interface method. +func (eq *evalEq) Eval(ctx Activation) ref.Val { + lVal := eq.lhs.Eval(ctx) + rVal := eq.rhs.Eval(ctx) + if types.IsUnknownOrError(lVal) { + return lVal + } + if types.IsUnknownOrError(rVal) { + return rVal + } + return types.Equal(lVal, rVal) +} + +// Function implements the InterpretableCall interface method. +func (*evalEq) Function() string { + return operators.Equals +} + +// OverloadID implements the InterpretableCall interface method. +func (*evalEq) OverloadID() string { + return overloads.Equals +} + +// Args implements the InterpretableCall interface method. +func (eq *evalEq) Args() []Interpretable { + return []Interpretable{eq.lhs, eq.rhs} +} + +type evalNe struct { + id int64 + lhs Interpretable + rhs Interpretable +} + +// ID implements the Interpretable interface method. +func (ne *evalNe) ID() int64 { + return ne.id +} + +// Eval implements the Interpretable interface method. +func (ne *evalNe) Eval(ctx Activation) ref.Val { + lVal := ne.lhs.Eval(ctx) + rVal := ne.rhs.Eval(ctx) + if types.IsUnknownOrError(lVal) { + return lVal + } + if types.IsUnknownOrError(rVal) { + return rVal + } + return types.Bool(types.Equal(lVal, rVal) != types.True) +} + +// Function implements the InterpretableCall interface method. +func (*evalNe) Function() string { + return operators.NotEquals +} + +// OverloadID implements the InterpretableCall interface method. +func (*evalNe) OverloadID() string { + return overloads.NotEquals +} + +// Args implements the InterpretableCall interface method. +func (ne *evalNe) Args() []Interpretable { + return []Interpretable{ne.lhs, ne.rhs} +} + +type evalZeroArity struct { + id int64 + function string + overload string + impl functions.FunctionOp +} + +// ID implements the Interpretable interface method. +func (zero *evalZeroArity) ID() int64 { + return zero.id +} + +// Eval implements the Interpretable interface method. +func (zero *evalZeroArity) Eval(ctx Activation) ref.Val { + return types.LabelErrNode(zero.id, zero.impl()) +} + +// Function implements the InterpretableCall interface method. +func (zero *evalZeroArity) Function() string { + return zero.function +} + +// OverloadID implements the InterpretableCall interface method. +func (zero *evalZeroArity) OverloadID() string { + return zero.overload +} + +// Args returns the argument to the unary function. +func (zero *evalZeroArity) Args() []Interpretable { + return []Interpretable{} +} + +type evalUnary struct { + id int64 + function string + overload string + arg Interpretable + trait int + impl functions.UnaryOp + nonStrict bool +} + +// ID implements the Interpretable interface method. +func (un *evalUnary) ID() int64 { + return un.id +} + +// Eval implements the Interpretable interface method. +func (un *evalUnary) Eval(ctx Activation) ref.Val { + argVal := un.arg.Eval(ctx) + // Early return if the argument to the function is unknown or error. + strict := !un.nonStrict + if strict && types.IsUnknownOrError(argVal) { + return argVal + } + // If the implementation is bound and the argument value has the right traits required to + // invoke it, then call the implementation. + if un.impl != nil && (un.trait == 0 || (!strict && types.IsUnknownOrError(argVal)) || argVal.Type().HasTrait(un.trait)) { + return types.LabelErrNode(un.id, un.impl(argVal)) + } + // Otherwise, if the argument is a ReceiverType attempt to invoke the receiver method on the + // operand (arg0). + if argVal.Type().HasTrait(traits.ReceiverType) { + return types.LabelErrNode(un.id, argVal.(traits.Receiver).Receive(un.function, un.overload, []ref.Val{})) + } + return types.NewErrWithNodeID(un.id, "no such overload: %s", un.function) +} + +// Function implements the InterpretableCall interface method. +func (un *evalUnary) Function() string { + return un.function +} + +// OverloadID implements the InterpretableCall interface method. +func (un *evalUnary) OverloadID() string { + return un.overload +} + +// Args returns the argument to the unary function. +func (un *evalUnary) Args() []Interpretable { + return []Interpretable{un.arg} +} + +type evalBinary struct { + id int64 + function string + overload string + lhs Interpretable + rhs Interpretable + trait int + impl functions.BinaryOp + nonStrict bool +} + +// ID implements the Interpretable interface method. +func (bin *evalBinary) ID() int64 { + return bin.id +} + +// Eval implements the Interpretable interface method. +func (bin *evalBinary) Eval(ctx Activation) ref.Val { + lVal := bin.lhs.Eval(ctx) + rVal := bin.rhs.Eval(ctx) + // Early return if any argument to the function is unknown or error. + strict := !bin.nonStrict + if strict { + if types.IsUnknownOrError(lVal) { + return lVal + } + if types.IsUnknownOrError(rVal) { + return rVal + } + } + // If the implementation is bound and the argument value has the right traits required to + // invoke it, then call the implementation. + if bin.impl != nil && (bin.trait == 0 || (!strict && types.IsUnknownOrError(lVal)) || lVal.Type().HasTrait(bin.trait)) { + return types.LabelErrNode(bin.id, bin.impl(lVal, rVal)) + } + // Otherwise, if the argument is a ReceiverType attempt to invoke the receiver method on the + // operand (arg0). + if lVal.Type().HasTrait(traits.ReceiverType) { + return types.LabelErrNode(bin.id, lVal.(traits.Receiver).Receive(bin.function, bin.overload, []ref.Val{rVal})) + } + return types.NewErrWithNodeID(bin.id, "no such overload: %s", bin.function) +} + +// Function implements the InterpretableCall interface method. +func (bin *evalBinary) Function() string { + return bin.function +} + +// OverloadID implements the InterpretableCall interface method. +func (bin *evalBinary) OverloadID() string { + return bin.overload +} + +// Args returns the argument to the unary function. +func (bin *evalBinary) Args() []Interpretable { + return []Interpretable{bin.lhs, bin.rhs} +} + +type evalVarArgs struct { + id int64 + function string + overload string + args []Interpretable + trait int + impl functions.FunctionOp + nonStrict bool +} + +// NewCall creates a new call Interpretable. +func NewCall(id int64, function, overload string, args []Interpretable, impl functions.FunctionOp) InterpretableCall { + return &evalVarArgs{ + id: id, + function: function, + overload: overload, + args: args, + impl: impl, + } +} + +// ID implements the Interpretable interface method. +func (fn *evalVarArgs) ID() int64 { + return fn.id +} + +// Eval implements the Interpretable interface method. +func (fn *evalVarArgs) Eval(ctx Activation) ref.Val { + argVals := make([]ref.Val, len(fn.args)) + // Early return if any argument to the function is unknown or error. + strict := !fn.nonStrict + for i, arg := range fn.args { + argVals[i] = arg.Eval(ctx) + if strict && types.IsUnknownOrError(argVals[i]) { + return argVals[i] + } + } + // If the implementation is bound and the argument value has the right traits required to + // invoke it, then call the implementation. + arg0 := argVals[0] + if fn.impl != nil && (fn.trait == 0 || (!strict && types.IsUnknownOrError(arg0)) || arg0.Type().HasTrait(fn.trait)) { + return types.LabelErrNode(fn.id, fn.impl(argVals...)) + } + // Otherwise, if the argument is a ReceiverType attempt to invoke the receiver method on the + // operand (arg0). + if arg0.Type().HasTrait(traits.ReceiverType) { + return types.LabelErrNode(fn.id, arg0.(traits.Receiver).Receive(fn.function, fn.overload, argVals[1:])) + } + return types.NewErrWithNodeID(fn.id, "no such overload: %s %d", fn.function, fn.id) +} + +// Function implements the InterpretableCall interface method. +func (fn *evalVarArgs) Function() string { + return fn.function +} + +// OverloadID implements the InterpretableCall interface method. +func (fn *evalVarArgs) OverloadID() string { + return fn.overload +} + +// Args returns the argument to the unary function. +func (fn *evalVarArgs) Args() []Interpretable { + return fn.args +} + +type evalList struct { + id int64 + elems []Interpretable + optionals []bool + hasOptionals bool + adapter types.Adapter +} + +// ID implements the Interpretable interface method. +func (l *evalList) ID() int64 { + return l.id +} + +// Eval implements the Interpretable interface method. +func (l *evalList) Eval(ctx Activation) ref.Val { + elemVals := make([]ref.Val, 0, len(l.elems)) + // If any argument is unknown or error early terminate. + for i, elem := range l.elems { + elemVal := elem.Eval(ctx) + if types.IsUnknownOrError(elemVal) { + return elemVal + } + if l.hasOptionals && l.optionals[i] { + optVal, ok := elemVal.(*types.Optional) + if !ok { + return types.LabelErrNode(l.id, invalidOptionalElementInit(elemVal)) + } + if !optVal.HasValue() { + continue + } + elemVal = optVal.GetValue() + } + elemVals = append(elemVals, elemVal) + } + return l.adapter.NativeToValue(elemVals) +} + +func (l *evalList) InitVals() []Interpretable { + return l.elems +} + +func (l *evalList) Type() ref.Type { + return types.ListType +} + +type evalMap struct { + id int64 + keys []Interpretable + vals []Interpretable + optionals []bool + hasOptionals bool + adapter types.Adapter +} + +// ID implements the Interpretable interface method. +func (m *evalMap) ID() int64 { + return m.id +} + +// Eval implements the Interpretable interface method. +func (m *evalMap) Eval(ctx Activation) ref.Val { + entries := make(map[ref.Val]ref.Val) + // If any argument is unknown or error early terminate. + for i, key := range m.keys { + keyVal := key.Eval(ctx) + if types.IsUnknownOrError(keyVal) { + return keyVal + } + valVal := m.vals[i].Eval(ctx) + if types.IsUnknownOrError(valVal) { + return valVal + } + if m.hasOptionals && m.optionals[i] { + optVal, ok := valVal.(*types.Optional) + if !ok { + return types.LabelErrNode(m.id, invalidOptionalEntryInit(keyVal, valVal)) + } + if !optVal.HasValue() { + delete(entries, keyVal) + continue + } + valVal = optVal.GetValue() + } + entries[keyVal] = valVal + } + return m.adapter.NativeToValue(entries) +} + +func (m *evalMap) InitVals() []Interpretable { + if len(m.keys) != len(m.vals) { + return nil + } + result := make([]Interpretable, len(m.keys)+len(m.vals)) + idx := 0 + for i, k := range m.keys { + v := m.vals[i] + result[idx] = k + idx++ + result[idx] = v + idx++ + } + return result +} + +func (m *evalMap) Type() ref.Type { + return types.MapType +} + +type evalObj struct { + id int64 + typeName string + fields []string + vals []Interpretable + optionals []bool + hasOptionals bool + provider types.Provider +} + +// ID implements the Interpretable interface method. +func (o *evalObj) ID() int64 { + return o.id +} + +// Eval implements the Interpretable interface method. +func (o *evalObj) Eval(ctx Activation) ref.Val { + fieldVals := make(map[string]ref.Val) + // If any argument is unknown or error early terminate. + for i, field := range o.fields { + val := o.vals[i].Eval(ctx) + if types.IsUnknownOrError(val) { + return val + } + if o.hasOptionals && o.optionals[i] { + optVal, ok := val.(*types.Optional) + if !ok { + return types.LabelErrNode(o.id, invalidOptionalEntryInit(field, val)) + } + if !optVal.HasValue() { + delete(fieldVals, field) + continue + } + val = optVal.GetValue() + } + fieldVals[field] = val + } + return types.LabelErrNode(o.id, o.provider.NewValue(o.typeName, fieldVals)) +} + +// InitVals implements the InterpretableConstructor interface method. +func (o *evalObj) InitVals() []Interpretable { + return o.vals +} + +// Type implements the InterpretableConstructor interface method. +func (o *evalObj) Type() ref.Type { + return types.NewObjectType(o.typeName) +} + +type evalFold struct { + id int64 + accuVar string + iterVar string + iterVar2 string + iterRange Interpretable + accu Interpretable + cond Interpretable + step Interpretable + result Interpretable + adapter types.Adapter + + // note an exhaustive fold will ensure that all branches are evaluated + // when using mutable values, these branches will mutate the final result + // rather than make a throw-away computation. + exhaustive bool + interruptable bool +} + +// ID implements the Interpretable interface method. +func (fold *evalFold) ID() int64 { + return fold.id +} + +// Eval implements the Interpretable interface method. +func (fold *evalFold) Eval(ctx Activation) ref.Val { + // Initialize the folder interface + f := newFolder(fold, ctx) + defer releaseFolder(f) + + foldRange := fold.iterRange.Eval(ctx) + if types.IsUnknownOrError(foldRange) { + return foldRange + } + if fold.iterVar2 != "" { + var foldable traits.Foldable + switch r := foldRange.(type) { + case traits.Mapper: + foldable = types.ToFoldableMap(r) + case traits.Lister: + foldable = types.ToFoldableList(r) + default: + return types.NewErrWithNodeID(fold.ID(), "unsupported comprehension range type: %T", foldRange) + } + foldable.Fold(f) + return f.evalResult() + } + + if !foldRange.Type().HasTrait(traits.IterableType) { + return types.ValOrErr(foldRange, "got '%T', expected iterable type", foldRange) + } + iterable := foldRange.(traits.Iterable) + return f.foldIterable(iterable) +} + +// Optional Interpretable implementations that specialize, subsume, or extend the core evaluation +// plan via decorators. + +// evalSetMembership is an Interpretable implementation which tests whether an input value +// exists within the set of map keys used to model a set. +type evalSetMembership struct { + inst Interpretable + arg Interpretable + valueSet map[ref.Val]ref.Val +} + +// ID implements the Interpretable interface method. +func (e *evalSetMembership) ID() int64 { + return e.inst.ID() +} + +// Eval implements the Interpretable interface method. +func (e *evalSetMembership) Eval(ctx Activation) ref.Val { + val := e.arg.Eval(ctx) + if types.IsUnknownOrError(val) { + return val + } + if ret, found := e.valueSet[val]; found { + return ret + } + return types.False +} + +// evalWatch is an Interpretable implementation that wraps the execution of a given +// expression so that it may observe the computed value and send it to an observer. +type evalWatch struct { + Interpretable + observer EvalObserver +} + +// Eval implements the Interpretable interface method. +func (e *evalWatch) Eval(vars Activation) ref.Val { + val := e.Interpretable.Eval(vars) + e.observer(vars, e.ID(), e.Interpretable, val) + return val +} + +// evalWatchAttr describes a watcher of an InterpretableAttribute Interpretable. +// +// Since the watcher may be selected against at a later stage in program planning, the watcher +// must implement the InterpretableAttribute interface by proxy. +type evalWatchAttr struct { + InterpretableAttribute + observer EvalObserver +} + +// AddQualifier creates a wrapper over the incoming qualifier which observes the qualification +// result. +func (e *evalWatchAttr) AddQualifier(q Qualifier) (Attribute, error) { + switch qual := q.(type) { + // By default, the qualifier is either a constant or an attribute + // There may be some custom cases where the attribute is neither. + case ConstantQualifier: + // Expose a method to test whether the qualifier matches the input pattern. + q = &evalWatchConstQual{ + ConstantQualifier: qual, + observer: e.observer, + adapter: e.Adapter(), + } + case *evalWatchAttr: + // Unwrap the evalWatchAttr since the observation will be applied during Qualify or + // QualifyIfPresent rather than Eval. + q = &evalWatchAttrQual{ + Attribute: qual.InterpretableAttribute, + observer: e.observer, + adapter: e.Adapter(), + } + case Attribute: + // Expose methods which intercept the qualification prior to being applied as a qualifier. + // Using this interface ensures that the qualifier is converted to a constant value one + // time during attribute pattern matching as the method embeds the Attribute interface + // needed to trip the conversion to a constant. + q = &evalWatchAttrQual{ + Attribute: qual, + observer: e.observer, + adapter: e.Adapter(), + } + default: + // This is likely a custom qualifier type. + q = &evalWatchQual{ + Qualifier: qual, + observer: e.observer, + adapter: e.Adapter(), + } + } + _, err := e.InterpretableAttribute.AddQualifier(q) + return e, err +} + +// Eval implements the Interpretable interface method. +func (e *evalWatchAttr) Eval(vars Activation) ref.Val { + val := e.InterpretableAttribute.Eval(vars) + e.observer(vars, e.ID(), e.InterpretableAttribute, val) + return val +} + +// evalWatchConstQual observes the qualification of an object using a constant boolean, int, +// string, or uint. +type evalWatchConstQual struct { + ConstantQualifier + observer EvalObserver + adapter types.Adapter +} + +// Qualify observes the qualification of a object via a constant boolean, int, string, or uint. +func (e *evalWatchConstQual) Qualify(vars Activation, obj any) (any, error) { + out, err := e.ConstantQualifier.Qualify(vars, obj) + var val ref.Val + if err != nil { + val = types.LabelErrNode(e.ID(), types.WrapErr(err)) + } else { + val = e.adapter.NativeToValue(out) + } + e.observer(vars, e.ID(), e.ConstantQualifier, val) + return out, err +} + +// QualifyIfPresent conditionally qualifies the variable and only records a value if one is present. +func (e *evalWatchConstQual) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + out, present, err := e.ConstantQualifier.QualifyIfPresent(vars, obj, presenceOnly) + var val ref.Val + if err != nil { + val = types.LabelErrNode(e.ID(), types.WrapErr(err)) + } else if out != nil { + val = e.adapter.NativeToValue(out) + } else if presenceOnly { + val = types.Bool(present) + } + if present || presenceOnly { + e.observer(vars, e.ID(), e.ConstantQualifier, val) + } + return out, present, err +} + +// QualifierValueEquals tests whether the incoming value is equal to the qualifying constant. +func (e *evalWatchConstQual) QualifierValueEquals(value any) bool { + qve, ok := e.ConstantQualifier.(qualifierValueEquator) + return ok && qve.QualifierValueEquals(value) +} + +// evalWatchAttrQual observes the qualification of an object by a value computed at runtime. +type evalWatchAttrQual struct { + Attribute + observer EvalObserver + adapter ref.TypeAdapter +} + +// Qualify observes the qualification of a object via a value computed at runtime. +func (e *evalWatchAttrQual) Qualify(vars Activation, obj any) (any, error) { + out, err := e.Attribute.Qualify(vars, obj) + var val ref.Val + if err != nil { + val = types.LabelErrNode(e.ID(), types.WrapErr(err)) + } else { + val = e.adapter.NativeToValue(out) + } + e.observer(vars, e.ID(), e.Attribute, val) + return out, err +} + +// QualifyIfPresent conditionally qualifies the variable and only records a value if one is present. +func (e *evalWatchAttrQual) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + out, present, err := e.Attribute.QualifyIfPresent(vars, obj, presenceOnly) + var val ref.Val + if err != nil { + val = types.LabelErrNode(e.ID(), types.WrapErr(err)) + } else if out != nil { + val = e.adapter.NativeToValue(out) + } else if presenceOnly { + val = types.Bool(present) + } + if present || presenceOnly { + e.observer(vars, e.ID(), e.Attribute, val) + } + return out, present, err +} + +// evalWatchQual observes the qualification of an object by a value computed at runtime. +type evalWatchQual struct { + Qualifier + observer EvalObserver + adapter types.Adapter +} + +// Qualify observes the qualification of a object via a value computed at runtime. +func (e *evalWatchQual) Qualify(vars Activation, obj any) (any, error) { + out, err := e.Qualifier.Qualify(vars, obj) + var val ref.Val + if err != nil { + val = types.LabelErrNode(e.ID(), types.WrapErr(err)) + } else { + val = e.adapter.NativeToValue(out) + } + e.observer(vars, e.ID(), e.Qualifier, val) + return out, err +} + +// QualifyIfPresent conditionally qualifies the variable and only records a value if one is present. +func (e *evalWatchQual) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + out, present, err := e.Qualifier.QualifyIfPresent(vars, obj, presenceOnly) + var val ref.Val + if err != nil { + val = types.LabelErrNode(e.ID(), types.WrapErr(err)) + } else if out != nil { + val = e.adapter.NativeToValue(out) + } else if presenceOnly { + val = types.Bool(present) + } + if present || presenceOnly { + e.observer(vars, e.ID(), e.Qualifier, val) + } + return out, present, err +} + +// evalWatchConst describes a watcher of an instConst Interpretable. +type evalWatchConst struct { + InterpretableConst + observer EvalObserver +} + +// Eval implements the Interpretable interface method. +func (e *evalWatchConst) Eval(vars Activation) ref.Val { + val := e.Value() + e.observer(vars, e.ID(), e.InterpretableConst, val) + return val +} + +// evalExhaustiveOr is just like evalOr, but does not short-circuit argument evaluation. +type evalExhaustiveOr struct { + id int64 + terms []Interpretable +} + +// ID implements the Interpretable interface method. +func (or *evalExhaustiveOr) ID() int64 { + return or.id +} + +// Eval implements the Interpretable interface method. +func (or *evalExhaustiveOr) Eval(ctx Activation) ref.Val { + var err ref.Val = nil + var unk *types.Unknown + isTrue := false + for _, term := range or.terms { + val := term.Eval(ctx) + boolVal, ok := val.(types.Bool) + // flag the result as true + if ok && boolVal == types.True { + isTrue = true + } + if !ok && !isTrue { + isUnk := false + unk, isUnk = types.MaybeMergeUnknowns(val, unk) + if !isUnk && err == nil { + if types.IsError(val) { + err = val + } else { + err = types.MaybeNoSuchOverloadErr(val) + } + } + } + } + if isTrue { + return types.True + } + if unk != nil { + return unk + } + if err != nil { + return err + } + return types.False +} + +// evalExhaustiveAnd is just like evalAnd, but does not short-circuit argument evaluation. +type evalExhaustiveAnd struct { + id int64 + terms []Interpretable +} + +// ID implements the Interpretable interface method. +func (and *evalExhaustiveAnd) ID() int64 { + return and.id +} + +// Eval implements the Interpretable interface method. +func (and *evalExhaustiveAnd) Eval(ctx Activation) ref.Val { + var err ref.Val = nil + var unk *types.Unknown + isFalse := false + for _, term := range and.terms { + val := term.Eval(ctx) + boolVal, ok := val.(types.Bool) + // short-circuit on false. + if ok && boolVal == types.False { + isFalse = true + } + if !ok && !isFalse { + isUnk := false + unk, isUnk = types.MaybeMergeUnknowns(val, unk) + if !isUnk && err == nil { + if types.IsError(val) { + err = val + } else { + err = types.MaybeNoSuchOverloadErr(val) + } + } + } + } + if isFalse { + return types.False + } + if unk != nil { + return unk + } + if err != nil { + return err + } + return types.True +} + +// evalExhaustiveConditional is like evalConditional, but does not short-circuit argument +// evaluation. +type evalExhaustiveConditional struct { + id int64 + adapter types.Adapter + attr *conditionalAttribute +} + +// ID implements the Interpretable interface method. +func (cond *evalExhaustiveConditional) ID() int64 { + return cond.id +} + +// Eval implements the Interpretable interface method. +func (cond *evalExhaustiveConditional) Eval(ctx Activation) ref.Val { + cVal := cond.attr.expr.Eval(ctx) + tVal, tErr := cond.attr.truthy.Resolve(ctx) + fVal, fErr := cond.attr.falsy.Resolve(ctx) + cBool, ok := cVal.(types.Bool) + if !ok { + return types.ValOrErr(cVal, "no such overload") + } + if cBool { + if tErr != nil { + return types.LabelErrNode(cond.id, types.WrapErr(tErr)) + } + return cond.adapter.NativeToValue(tVal) + } + if fErr != nil { + return types.LabelErrNode(cond.id, types.WrapErr(fErr)) + } + return cond.adapter.NativeToValue(fVal) +} + +// evalAttr evaluates an Attribute value. +type evalAttr struct { + adapter types.Adapter + attr Attribute + optional bool +} + +var _ InterpretableAttribute = &evalAttr{} + +// ID of the attribute instruction. +func (a *evalAttr) ID() int64 { + return a.attr.ID() +} + +// AddQualifier implements the InterpretableAttribute interface method. +func (a *evalAttr) AddQualifier(qual Qualifier) (Attribute, error) { + attr, err := a.attr.AddQualifier(qual) + a.attr = attr + return attr, err +} + +// Attr implements the InterpretableAttribute interface method. +func (a *evalAttr) Attr() Attribute { + return a.attr +} + +// Adapter implements the InterpretableAttribute interface method. +func (a *evalAttr) Adapter() types.Adapter { + return a.adapter +} + +// Eval implements the Interpretable interface method. +func (a *evalAttr) Eval(ctx Activation) ref.Val { + v, err := a.attr.Resolve(ctx) + if err != nil { + return types.LabelErrNode(a.ID(), types.WrapErr(err)) + } + return a.adapter.NativeToValue(v) +} + +// Qualify proxies to the Attribute's Qualify method. +func (a *evalAttr) Qualify(vars Activation, obj any) (any, error) { + return a.attr.Qualify(vars, obj) +} + +// QualifyIfPresent proxies to the Attribute's QualifyIfPresent method. +func (a *evalAttr) QualifyIfPresent(vars Activation, obj any, presenceOnly bool) (any, bool, error) { + return a.attr.QualifyIfPresent(vars, obj, presenceOnly) +} + +func (a *evalAttr) IsOptional() bool { + return a.optional +} + +// Resolve proxies to the Attribute's Resolve method. +func (a *evalAttr) Resolve(ctx Activation) (any, error) { + return a.attr.Resolve(ctx) +} + +type evalWatchConstructor struct { + constructor InterpretableConstructor + observer EvalObserver +} + +// InitVals implements the InterpretableConstructor InitVals function. +func (c *evalWatchConstructor) InitVals() []Interpretable { + return c.constructor.InitVals() +} + +// Type implements the InterpretableConstructor Type function. +func (c *evalWatchConstructor) Type() ref.Type { + return c.constructor.Type() +} + +// ID implements the Interpretable ID function. +func (c *evalWatchConstructor) ID() int64 { + return c.constructor.ID() +} + +// Eval implements the Interpretable Eval function. +func (c *evalWatchConstructor) Eval(vars Activation) ref.Val { + val := c.constructor.Eval(vars) + c.observer(vars, c.ID(), c.constructor, val) + return val +} + +func invalidOptionalEntryInit(field any, value ref.Val) ref.Val { + return types.NewErr("cannot initialize optional entry '%v' from non-optional value %v", field, value) +} + +func invalidOptionalElementInit(value ref.Val) ref.Val { + return types.NewErr("cannot initialize optional list element from non-optional value %v", value) +} + +// newFolder creates or initializes a pooled folder instance. +func newFolder(eval *evalFold, ctx Activation) *folder { + f := folderPool.Get().(*folder) + f.evalFold = eval + f.activation = ctx + return f +} + +// releaseFolder resets and releases a pooled folder instance. +func releaseFolder(f *folder) { + f.reset() + folderPool.Put(f) +} + +// folder tracks the state associated with folding a list or map with a comprehension v2 style macro. +// +// The folder embeds an interpreter.Activation and Interpretable evalFold value as well as implements +// the traits.Folder interface methods. +// +// Instances of a folder are intended to be pooled to minimize allocation overhead with this temporary +// bookkeeping object which supports lazy evaluation of the accumulator init expression which is useful +// in preserving evaluation order semantics which might otherwise be disrupted through the use of +// cel.bind or cel.@block. +type folder struct { + *evalFold + activation Activation + + // fold state objects. + accuVal ref.Val + iterVar1Val any + iterVar2Val any + + // bookkeeping flags to modify Activation and fold behaviors. + initialized bool + mutableValue bool + interrupted bool + computeResult bool +} + +func (f *folder) foldIterable(iterable traits.Iterable) ref.Val { + it := iterable.Iterator() + for it.HasNext() == types.True { + f.iterVar1Val = it.Next() + + cond := f.cond.Eval(f) + condBool, ok := cond.(types.Bool) + if f.interrupted || (!f.exhaustive && ok && condBool != types.True) { + return f.evalResult() + } + + // Update the accumulation value and check for eval interuption. + f.accuVal = f.step.Eval(f) + f.initialized = true + if f.interruptable && checkInterrupt(f.activation) { + f.interrupted = true + return f.evalResult() + } + } + return f.evalResult() +} + +// FoldEntry will either fold comprehension v1 style macros if iterVar2 is unset, or comprehension v2 style +// macros if both the iterVar and iterVar2 are set to non-empty strings. +func (f *folder) FoldEntry(key, val any) bool { + // Default to referencing both values. + f.iterVar1Val = key + f.iterVar2Val = val + + // Terminate evaluation if evaluation is interrupted or the condition is not true and exhaustive + // eval is not enabled. + cond := f.cond.Eval(f) + condBool, ok := cond.(types.Bool) + if f.interrupted || (!f.exhaustive && ok && condBool != types.True) { + return false + } + + // Update the accumulation value and check for eval interuption. + f.accuVal = f.step.Eval(f) + f.initialized = true + if f.interruptable && checkInterrupt(f.activation) { + f.interrupted = true + return false + } + return true +} + +// ResolveName overrides the default Activation lookup to perform lazy initialization of the accumulator +// and specialized lookups of iteration values with consideration for whether the final result is being +// computed and the iteration variables should be ignored. +func (f *folder) ResolveName(name string) (any, bool) { + if name == f.accuVar { + if !f.initialized { + f.initialized = true + initVal := f.accu.Eval(f.activation) + if !f.exhaustive { + if l, isList := initVal.(traits.Lister); isList && l.Size() == types.IntZero { + initVal = types.NewMutableList(f.adapter) + f.mutableValue = true + } + if m, isMap := initVal.(traits.Mapper); isMap && m.Size() == types.IntZero { + initVal = types.NewMutableMap(f.adapter, map[ref.Val]ref.Val{}) + f.mutableValue = true + } + } + f.accuVal = initVal + } + return f.accuVal, true + } + if !f.computeResult { + if name == f.iterVar { + f.iterVar1Val = f.adapter.NativeToValue(f.iterVar1Val) + return f.iterVar1Val, true + } + if name == f.iterVar2 { + f.iterVar2Val = f.adapter.NativeToValue(f.iterVar2Val) + return f.iterVar2Val, true + } + } + return f.activation.ResolveName(name) +} + +// Parent returns the activation embedded into the folder. +func (f *folder) Parent() Activation { + return f.activation +} + +// UnknownAttributePatterns implements the PartialActivation interface returning the unknown patterns +// if they were provided to the input activation, or an empty set if the proxied activation is not partial. +func (f *folder) UnknownAttributePatterns() []*AttributePattern { + if pv, ok := f.activation.(partialActivationConverter); ok { + if partial, isPartial := pv.AsPartialActivation(); isPartial { + return partial.UnknownAttributePatterns() + } + } + return []*AttributePattern{} +} + +func (f *folder) AsPartialActivation() (PartialActivation, bool) { + if pv, ok := f.activation.(partialActivationConverter); ok { + if _, isPartial := pv.AsPartialActivation(); isPartial { + return f, true + } + } + return nil, false +} + +// evalResult computes the final result of the fold after all entries have been folded and accumulated. +func (f *folder) evalResult() ref.Val { + f.computeResult = true + if f.interrupted { + return types.NewErr("operation interrupted") + } + res := f.result.Eval(f) + // Convert a mutable list or map to an immutable one if the comprehension has generated a list or + // map as a result. + if !types.IsUnknownOrError(res) && f.mutableValue { + if _, ok := res.(traits.MutableLister); ok { + res = res.(traits.MutableLister).ToImmutableList() + } + if _, ok := res.(traits.MutableMapper); ok { + res = res.(traits.MutableMapper).ToImmutableMap() + } + } + return res +} + +// reset clears any state associated with folder evaluation. +func (f *folder) reset() { + f.evalFold = nil + f.activation = nil + f.accuVal = nil + f.iterVar1Val = nil + f.iterVar2Val = nil + + f.initialized = false + f.mutableValue = false + f.interrupted = false + f.computeResult = false +} + +func checkInterrupt(a Activation) bool { + stop, found := a.ResolveName("#interrupted") + return found && stop == true +} + +var ( + // pool of var folders to reduce allocations during folds. + folderPool = &sync.Pool{ + New: func() any { + return &folder{} + }, + } +) diff --git a/vendor/github.com/google/cel-go/interpreter/interpreter.go b/vendor/github.com/google/cel-go/interpreter/interpreter.go new file mode 100644 index 0000000000..be57e74392 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/interpreter.go @@ -0,0 +1,273 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package interpreter provides functions to evaluate parsed expressions with +// the option to augment the evaluation with inputs and functions supplied at +// evaluation time. +package interpreter + +import ( + "errors" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// PlannerOption configures the program plan options during interpretable setup. +type PlannerOption func(*planner) (*planner, error) + +// Interpreter generates a new Interpretable from a checked or unchecked expression. +type Interpreter interface { + // NewInterpretable creates an Interpretable from a checked expression and an + // optional list of PlannerOption values. + NewInterpretable(exprAST *ast.AST, opts ...PlannerOption) (Interpretable, error) +} + +// EvalObserver is a functional interface that accepts an expression id and an observed value. +// The id identifies the expression that was evaluated, the programStep is the Interpretable or Qualifier that +// was evaluated and value is the result of the evaluation. +type EvalObserver func(vars Activation, id int64, programStep any, value ref.Val) + +// StatefulObserver observes evaluation while tracking or utilizing stateful behavior. +type StatefulObserver interface { + // InitState configures stateful metadata on the activation. + InitState(Activation) (Activation, error) + + // GetState retrieves the stateful metadata from the activation. + GetState(Activation) any + + // Observe passes the activation and relevant evaluation metadata to the observer. + // The observe method is expected to do the equivalent of GetState(vars) in order + // to find the metadata that needs to be updated upon invocation. + Observe(vars Activation, id int64, programStep any, value ref.Val) +} + +// EvalCancelledError represents a cancelled program evaluation operation. +type EvalCancelledError struct { + Message string + // Type identifies the cause of the cancellation. + Cause CancellationCause +} + +func (e EvalCancelledError) Error() string { + return e.Message +} + +// CancellationCause enumerates the ways a program evaluation operation can be cancelled. +type CancellationCause int + +const ( + // ContextCancelled indicates that the operation was cancelled in response to a Golang context cancellation. + ContextCancelled CancellationCause = iota + + // CostLimitExceeded indicates that the operation was cancelled in response to the actual cost limit being + // exceeded. + CostLimitExceeded +) + +// evalStateOption configures the evalStateFactory behavior. +type evalStateOption func(*evalStateFactory) *evalStateFactory + +// EvalStateFactory configures the EvalState generator to be used by the EvalStateObserver. +func EvalStateFactory(factory func() EvalState) evalStateOption { + return func(fac *evalStateFactory) *evalStateFactory { + fac.factory = factory + return fac + } +} + +// EvalStateObserver provides an observer which records the value associated with the given expression id. +// EvalState must be provided to the observer. +func EvalStateObserver(opts ...evalStateOption) PlannerOption { + et := &evalStateFactory{factory: NewEvalState} + for _, o := range opts { + et = o(et) + } + return func(p *planner) (*planner, error) { + if et.factory == nil { + return nil, errors.New("eval state factory not configured") + } + p.observers = append(p.observers, et) + p.decorators = append(p.decorators, decObserveEval(et.Observe)) + return p, nil + } +} + +// evalStateConverter identifies an object which is convertible to an EvalState instance. +type evalStateConverter interface { + asEvalState() EvalState +} + +// evalStateActivation hides state in the Activation in a manner not accessible to expressions. +type evalStateActivation struct { + vars Activation + state EvalState +} + +// ResolveName proxies variable lookups to the backing activation. +func (esa evalStateActivation) ResolveName(name string) (any, bool) { + return esa.vars.ResolveName(name) +} + +// Parent proxies parent lookups to the backing activation. +func (esa evalStateActivation) Parent() Activation { + return esa.vars +} + +// AsPartialActivation supports conversion to a partial activation in order to detect unknown attributes. +func (esa evalStateActivation) AsPartialActivation() (PartialActivation, bool) { + return AsPartialActivation(esa.vars) +} + +// asEvalState implements the evalStateConverter method. +func (esa evalStateActivation) asEvalState() EvalState { + return esa.state +} + +// asEvalState walks the Activation hierarchy and returns the first EvalState found, if present. +func asEvalState(vars Activation) (EvalState, bool) { + if conv, ok := vars.(evalStateConverter); ok { + return conv.asEvalState(), true + } + if vars.Parent() != nil { + return asEvalState(vars.Parent()) + } + return nil, false +} + +// evalStateFactory holds a reference to a factory function that produces an EvalState instance. +type evalStateFactory struct { + factory func() EvalState +} + +// InitState produces an EvalState instance and bundles it into the Activation in a way which is +// not visible to expression evaluation. +func (et *evalStateFactory) InitState(vars Activation) (Activation, error) { + state := et.factory() + return evalStateActivation{vars: vars, state: state}, nil +} + +// GetState extracts the EvalState from the Activation. +func (et *evalStateFactory) GetState(vars Activation) any { + if state, found := asEvalState(vars); found { + return state + } + return nil +} + +// Observe records the evaluation state for a given expression node and program step. +func (et *evalStateFactory) Observe(vars Activation, id int64, programStep any, val ref.Val) { + state, found := asEvalState(vars) + if !found { + return + } + state.SetValue(id, val) +} + +// CustomDecorator configures a custom interpretable decorator for the program. +func CustomDecorator(dec InterpretableDecorator) PlannerOption { + return func(p *planner) (*planner, error) { + p.decorators = append(p.decorators, dec) + return p, nil + } +} + +// ExhaustiveEval replaces operations that short-circuit with versions that evaluate +// expressions and couples this behavior with the TrackState() decorator to provide +// insight into the evaluation state of the entire expression. EvalState must be +// provided to the decorator. This decorator is not thread-safe, and the EvalState +// must be reset between Eval() calls. +func ExhaustiveEval() PlannerOption { + return CustomDecorator(decDisableShortcircuits()) +} + +// InterruptableEval annotates comprehension loops with information that indicates they +// should check the `#interrupted` state within a custom Activation. +// +// The custom activation is currently managed higher up in the stack within the 'cel' package +// and should not require any custom support on behalf of callers. +func InterruptableEval() PlannerOption { + return CustomDecorator(decInterruptFolds()) +} + +// Optimize will pre-compute operations such as list and map construction and optimize +// call arguments to set membership tests. The set of optimizations will increase over time. +func Optimize() PlannerOption { + return CustomDecorator(decOptimize()) +} + +// RegexOptimization provides a way to replace an InterpretableCall for a regex function when the +// RegexIndex argument is a string constant. Typically, the Factory would compile the regex pattern at +// RegexIndex and report any errors (at program creation time) and then use the compiled regex for +// all regex function invocations. +type RegexOptimization struct { + // Function is the name of the function to optimize. + Function string + // OverloadID is the ID of the overload to optimize. + OverloadID string + // RegexIndex is the index position of the regex pattern argument. Only calls to the function where this argument is + // a string constant will be delegated to this optimizer. + RegexIndex int + // Factory constructs a replacement InterpretableCall node that optimizes the regex function call. Factory is + // provided with the unoptimized regex call and the string constant at the RegexIndex argument. + // The Factory may compile the regex for use across all invocations of the call, return any errors and + // return an interpreter.NewCall with the desired regex optimized function impl. + Factory func(call InterpretableCall, regexPattern string) (InterpretableCall, error) +} + +// CompileRegexConstants compiles regex pattern string constants at program creation time and reports any regex pattern +// compile errors. +func CompileRegexConstants(regexOptimizations ...*RegexOptimization) PlannerOption { + return CustomDecorator(decRegexOptimizer(regexOptimizations...)) +} + +type exprInterpreter struct { + dispatcher Dispatcher + container *containers.Container + provider types.Provider + adapter types.Adapter + attrFactory AttributeFactory +} + +// NewInterpreter builds an Interpreter from a Dispatcher and TypeProvider which will be used +// throughout the Eval of all Interpretable instances generated from it. +func NewInterpreter(dispatcher Dispatcher, + container *containers.Container, + provider types.Provider, + adapter types.Adapter, + attrFactory AttributeFactory) Interpreter { + return &exprInterpreter{ + dispatcher: dispatcher, + container: container, + provider: provider, + adapter: adapter, + attrFactory: attrFactory} +} + +// NewIntepretable implements the Interpreter interface method. +func (i *exprInterpreter) NewInterpretable( + checked *ast.AST, + opts ...PlannerOption) (Interpretable, error) { + p := newPlanner(i.dispatcher, i.provider, i.adapter, i.attrFactory, i.container, checked) + var err error + for _, o := range opts { + p, err = o(p) + if err != nil { + return nil, err + } + } + return p.Plan(checked.Expr()) +} diff --git a/vendor/github.com/google/cel-go/interpreter/optimizations.go b/vendor/github.com/google/cel-go/interpreter/optimizations.go new file mode 100644 index 0000000000..2fc87e693b --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/optimizations.go @@ -0,0 +1,46 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "regexp" + + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// MatchesRegexOptimization optimizes the 'matches' standard library function by compiling the regex pattern and +// reporting any compilation errors at program creation time, and using the compiled regex pattern for all function +// call invocations. +var MatchesRegexOptimization = &RegexOptimization{ + Function: "matches", + RegexIndex: 1, + Factory: func(call InterpretableCall, regexPattern string) (InterpretableCall, error) { + compiledRegex, err := regexp.Compile(regexPattern) + if err != nil { + return nil, err + } + return NewCall(call.ID(), call.Function(), call.OverloadID(), call.Args(), func(values ...ref.Val) ref.Val { + if len(values) != 2 { + return types.NoSuchOverloadErr() + } + in, ok := values[0].Value().(string) + if !ok { + return types.NoSuchOverloadErr() + } + return types.Bool(compiledRegex.MatchString(in)) + }), nil + }, +} diff --git a/vendor/github.com/google/cel-go/interpreter/planner.go b/vendor/github.com/google/cel-go/interpreter/planner.go new file mode 100644 index 0000000000..f0e0d43054 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/planner.go @@ -0,0 +1,767 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "fmt" + "strings" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/containers" + "github.com/google/cel-go/common/functions" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/types" +) + +// newPlanner creates an interpretablePlanner which references a Dispatcher, TypeProvider, +// TypeAdapter, Container, and CheckedExpr value. These pieces of data are used to resolve +// functions, types, and namespaced identifiers at plan time rather than at runtime since +// it only needs to be done once and may be semi-expensive to compute. +func newPlanner(disp Dispatcher, + provider types.Provider, + adapter types.Adapter, + attrFactory AttributeFactory, + cont *containers.Container, + exprAST *ast.AST) *planner { + return &planner{ + disp: disp, + provider: provider, + adapter: adapter, + attrFactory: attrFactory, + container: cont, + refMap: exprAST.ReferenceMap(), + typeMap: exprAST.TypeMap(), + decorators: make([]InterpretableDecorator, 0), + observers: make([]StatefulObserver, 0), + } +} + +// planner is an implementation of the interpretablePlanner interface. +type planner struct { + disp Dispatcher + provider types.Provider + adapter types.Adapter + attrFactory AttributeFactory + container *containers.Container + refMap map[int64]*ast.ReferenceInfo + typeMap map[int64]*types.Type + decorators []InterpretableDecorator + observers []StatefulObserver +} + +// Plan implements the interpretablePlanner interface. This implementation of the Plan method also +// applies decorators to each Interpretable generated as part of the overall plan. Decorators are +// useful for layering functionality into the evaluation that is not natively understood by CEL, +// such as state-tracking, expression re-write, and possibly efficient thread-safe memoization of +// repeated expressions. +func (p *planner) Plan(expr ast.Expr) (Interpretable, error) { + i, err := p.plan(expr) + if err != nil { + return nil, err + } + if len(p.observers) == 0 { + return i, nil + } + return &ObservableInterpretable{Interpretable: i, observers: p.observers}, nil +} + +func (p *planner) plan(expr ast.Expr) (Interpretable, error) { + switch expr.Kind() { + case ast.CallKind: + return p.decorate(p.planCall(expr)) + case ast.IdentKind: + return p.decorate(p.planIdent(expr)) + case ast.LiteralKind: + return p.decorate(p.planConst(expr)) + case ast.SelectKind: + return p.decorate(p.planSelect(expr)) + case ast.ListKind: + return p.decorate(p.planCreateList(expr)) + case ast.MapKind: + return p.decorate(p.planCreateMap(expr)) + case ast.StructKind: + return p.decorate(p.planCreateStruct(expr)) + case ast.ComprehensionKind: + return p.decorate(p.planComprehension(expr)) + } + return nil, fmt.Errorf("unsupported expr: %v", expr) +} + +// decorate applies the InterpretableDecorator functions to the given Interpretable. +// Both the Interpretable and error generated by a Plan step are accepted as arguments +// for convenience. +func (p *planner) decorate(i Interpretable, err error) (Interpretable, error) { + if err != nil { + return nil, err + } + for _, dec := range p.decorators { + i, err = dec(i) + if err != nil { + return nil, err + } + } + return i, nil +} + +// planIdent creates an Interpretable that resolves an identifier from an Activation. +func (p *planner) planIdent(expr ast.Expr) (Interpretable, error) { + // Establish whether the identifier is in the reference map. + if identRef, found := p.refMap[expr.ID()]; found { + return p.planCheckedIdent(expr.ID(), identRef) + } + // Create the possible attribute list for the unresolved reference. + ident := expr.AsIdent() + return &evalAttr{ + adapter: p.adapter, + attr: p.attrFactory.MaybeAttribute(expr.ID(), ident), + }, nil +} + +func (p *planner) planCheckedIdent(id int64, identRef *ast.ReferenceInfo) (Interpretable, error) { + // Plan a constant reference if this is the case for this simple identifier. + if identRef.Value != nil { + return NewConstValue(id, identRef.Value), nil + } + + // Check to see whether the type map indicates this is a type name. All types should be + // registered with the provider. + cType := p.typeMap[id] + if cType.Kind() == types.TypeKind { + cVal, found := p.provider.FindIdent(identRef.Name) + if !found { + return nil, fmt.Errorf("reference to undefined type: %s", identRef.Name) + } + return NewConstValue(id, cVal), nil + } + + // Otherwise, return the attribute for the resolved identifier name. + return &evalAttr{ + adapter: p.adapter, + attr: p.attrFactory.AbsoluteAttribute(id, identRef.Name), + }, nil +} + +// planSelect creates an Interpretable with either: +// +// a) selects a field from a map or proto. +// b) creates a field presence test for a select within a has() macro. +// c) resolves the select expression to a namespaced identifier. +func (p *planner) planSelect(expr ast.Expr) (Interpretable, error) { + // If the Select id appears in the reference map from the CheckedExpr proto then it is either + // a namespaced identifier or enum value. + if identRef, found := p.refMap[expr.ID()]; found { + return p.planCheckedIdent(expr.ID(), identRef) + } + + sel := expr.AsSelect() + // Plan the operand evaluation. + op, err := p.plan(sel.Operand()) + if err != nil { + return nil, err + } + opType := p.typeMap[sel.Operand().ID()] + + // If the Select was marked TestOnly, this is a presence test. + // + // Note: presence tests are defined for structured (e.g. proto) and dynamic values (map, json) + // as follows: + // - True if the object field has a non-default value, e.g. obj.str != "" + // - True if the dynamic value has the field defined, e.g. key in map + // + // However, presence tests are not defined for qualified identifier names with primitive types. + // If a string named 'a.b.c' is declared in the environment and referenced within `has(a.b.c)`, + // it is not clear whether has should error or follow the convention defined for structured + // values. + + // Establish the attribute reference. + attr, isAttr := op.(InterpretableAttribute) + if !isAttr { + attr, err = p.relativeAttr(op.ID(), op, false) + if err != nil { + return nil, err + } + } + + // Build a qualifier for the attribute. + qual, err := p.attrFactory.NewQualifier(opType, expr.ID(), sel.FieldName(), false) + if err != nil { + return nil, err + } + // Modify the attribute to be test-only. + if sel.IsTestOnly() { + attr = &evalTestOnly{ + id: expr.ID(), + InterpretableAttribute: attr, + } + } + // Append the qualifier on the attribute. + _, err = attr.AddQualifier(qual) + return attr, err +} + +// planCall creates a callable Interpretable while specializing for common functions and invocation +// patterns. Specifically, conditional operators &&, ||, ?:, and (in)equality functions result in +// optimized Interpretable values. +func (p *planner) planCall(expr ast.Expr) (Interpretable, error) { + call := expr.AsCall() + target, fnName, oName := p.resolveFunction(expr) + argCount := len(call.Args()) + var offset int + if target != nil { + argCount++ + offset++ + } + + args := make([]Interpretable, argCount) + if target != nil { + arg, err := p.plan(target) + if err != nil { + return nil, err + } + args[0] = arg + } + for i, argExpr := range call.Args() { + arg, err := p.plan(argExpr) + if err != nil { + return nil, err + } + args[i+offset] = arg + } + + // Generate specialized Interpretable operators by function name if possible. + switch fnName { + case operators.LogicalAnd: + return p.planCallLogicalAnd(expr, args) + case operators.LogicalOr: + return p.planCallLogicalOr(expr, args) + case operators.Conditional: + return p.planCallConditional(expr, args) + case operators.Equals: + return p.planCallEqual(expr, args) + case operators.NotEquals: + return p.planCallNotEqual(expr, args) + case operators.Index: + return p.planCallIndex(expr, args, false) + case operators.OptSelect, operators.OptIndex: + return p.planCallIndex(expr, args, true) + } + + // Otherwise, generate Interpretable calls specialized by argument count. + // Try to find the specific function by overload id. + var fnDef *functions.Overload + if oName != "" { + fnDef, _ = p.disp.FindOverload(oName) + } + // If the overload id couldn't resolve the function, try the simple function name. + if fnDef == nil { + fnDef, _ = p.disp.FindOverload(fnName) + } + switch argCount { + case 0: + return p.planCallZero(expr, fnName, oName, fnDef) + case 1: + // If the FunctionOp has been used, then use it as it may exist for the purposes + // of dynamic dispatch within a singleton function implementation. + if fnDef != nil && fnDef.Unary == nil && fnDef.Function != nil { + return p.planCallVarArgs(expr, fnName, oName, fnDef, args) + } + return p.planCallUnary(expr, fnName, oName, fnDef, args) + case 2: + // If the FunctionOp has been used, then use it as it may exist for the purposes + // of dynamic dispatch within a singleton function implementation. + if fnDef != nil && fnDef.Binary == nil && fnDef.Function != nil { + return p.planCallVarArgs(expr, fnName, oName, fnDef, args) + } + return p.planCallBinary(expr, fnName, oName, fnDef, args) + default: + return p.planCallVarArgs(expr, fnName, oName, fnDef, args) + } +} + +// planCallZero generates a zero-arity callable Interpretable. +func (p *planner) planCallZero(expr ast.Expr, + function string, + overload string, + impl *functions.Overload) (Interpretable, error) { + if impl == nil || impl.Function == nil { + return nil, fmt.Errorf("no such overload: %s()", function) + } + return &evalZeroArity{ + id: expr.ID(), + function: function, + overload: overload, + impl: impl.Function, + }, nil +} + +// planCallUnary generates a unary callable Interpretable. +func (p *planner) planCallUnary(expr ast.Expr, + function string, + overload string, + impl *functions.Overload, + args []Interpretable) (Interpretable, error) { + var fn functions.UnaryOp + var trait int + var nonStrict bool + if impl != nil { + if impl.Unary == nil { + return nil, fmt.Errorf("no such overload: %s(arg)", function) + } + fn = impl.Unary + trait = impl.OperandTrait + nonStrict = impl.NonStrict + } + return &evalUnary{ + id: expr.ID(), + function: function, + overload: overload, + arg: args[0], + trait: trait, + impl: fn, + nonStrict: nonStrict, + }, nil +} + +// planCallBinary generates a binary callable Interpretable. +func (p *planner) planCallBinary(expr ast.Expr, + function string, + overload string, + impl *functions.Overload, + args []Interpretable) (Interpretable, error) { + var fn functions.BinaryOp + var trait int + var nonStrict bool + if impl != nil { + if impl.Binary == nil { + return nil, fmt.Errorf("no such overload: %s(lhs, rhs)", function) + } + fn = impl.Binary + trait = impl.OperandTrait + nonStrict = impl.NonStrict + } + return &evalBinary{ + id: expr.ID(), + function: function, + overload: overload, + lhs: args[0], + rhs: args[1], + trait: trait, + impl: fn, + nonStrict: nonStrict, + }, nil +} + +// planCallVarArgs generates a variable argument callable Interpretable. +func (p *planner) planCallVarArgs(expr ast.Expr, + function string, + overload string, + impl *functions.Overload, + args []Interpretable) (Interpretable, error) { + var fn functions.FunctionOp + var trait int + var nonStrict bool + if impl != nil { + if impl.Function == nil { + return nil, fmt.Errorf("no such overload: %s(...)", function) + } + fn = impl.Function + trait = impl.OperandTrait + nonStrict = impl.NonStrict + } + return &evalVarArgs{ + id: expr.ID(), + function: function, + overload: overload, + args: args, + trait: trait, + impl: fn, + nonStrict: nonStrict, + }, nil +} + +// planCallEqual generates an equals (==) Interpretable. +func (p *planner) planCallEqual(expr ast.Expr, args []Interpretable) (Interpretable, error) { + return &evalEq{ + id: expr.ID(), + lhs: args[0], + rhs: args[1], + }, nil +} + +// planCallNotEqual generates a not equals (!=) Interpretable. +func (p *planner) planCallNotEqual(expr ast.Expr, args []Interpretable) (Interpretable, error) { + return &evalNe{ + id: expr.ID(), + lhs: args[0], + rhs: args[1], + }, nil +} + +// planCallLogicalAnd generates a logical and (&&) Interpretable. +func (p *planner) planCallLogicalAnd(expr ast.Expr, args []Interpretable) (Interpretable, error) { + return &evalAnd{ + id: expr.ID(), + terms: args, + }, nil +} + +// planCallLogicalOr generates a logical or (||) Interpretable. +func (p *planner) planCallLogicalOr(expr ast.Expr, args []Interpretable) (Interpretable, error) { + return &evalOr{ + id: expr.ID(), + terms: args, + }, nil +} + +// planCallConditional generates a conditional / ternary (c ? t : f) Interpretable. +func (p *planner) planCallConditional(expr ast.Expr, args []Interpretable) (Interpretable, error) { + cond := args[0] + t := args[1] + var tAttr Attribute + truthyAttr, isTruthyAttr := t.(InterpretableAttribute) + if isTruthyAttr { + tAttr = truthyAttr.Attr() + } else { + tAttr = p.attrFactory.RelativeAttribute(t.ID(), t) + } + + f := args[2] + var fAttr Attribute + falsyAttr, isFalsyAttr := f.(InterpretableAttribute) + if isFalsyAttr { + fAttr = falsyAttr.Attr() + } else { + fAttr = p.attrFactory.RelativeAttribute(f.ID(), f) + } + + return &evalAttr{ + adapter: p.adapter, + attr: p.attrFactory.ConditionalAttribute(expr.ID(), cond, tAttr, fAttr), + }, nil +} + +// planCallIndex either extends an attribute with the argument to the index operation, or creates +// a relative attribute based on the return of a function call or operation. +func (p *planner) planCallIndex(expr ast.Expr, args []Interpretable, optional bool) (Interpretable, error) { + op := args[0] + ind := args[1] + opType := p.typeMap[op.ID()] + + // Establish the attribute reference. + var err error + attr, isAttr := op.(InterpretableAttribute) + if !isAttr { + attr, err = p.relativeAttr(op.ID(), op, false) + if err != nil { + return nil, err + } + } + + // Construct the qualifier type. + var qual Qualifier + switch ind := ind.(type) { + case InterpretableConst: + qual, err = p.attrFactory.NewQualifier(opType, expr.ID(), ind.Value(), optional) + case InterpretableAttribute: + qual, err = p.attrFactory.NewQualifier(opType, expr.ID(), ind, optional) + default: + qual, err = p.relativeAttr(expr.ID(), ind, optional) + } + if err != nil { + return nil, err + } + + // Add the qualifier to the attribute + _, err = attr.AddQualifier(qual) + return attr, err +} + +// planCreateList generates a list construction Interpretable. +func (p *planner) planCreateList(expr ast.Expr) (Interpretable, error) { + list := expr.AsList() + optionalIndices := list.OptionalIndices() + elements := list.Elements() + optionals := make([]bool, len(elements)) + for _, index := range optionalIndices { + if index < 0 || index >= int32(len(elements)) { + return nil, fmt.Errorf("optional index %d out of element bounds [0, %d]", index, len(elements)) + } + optionals[index] = true + } + elems := make([]Interpretable, len(elements)) + for i, elem := range elements { + elemVal, err := p.plan(elem) + if err != nil { + return nil, err + } + elems[i] = elemVal + } + return &evalList{ + id: expr.ID(), + elems: elems, + optionals: optionals, + hasOptionals: len(optionalIndices) != 0, + adapter: p.adapter, + }, nil +} + +// planCreateStruct generates a map or object construction Interpretable. +func (p *planner) planCreateMap(expr ast.Expr) (Interpretable, error) { + m := expr.AsMap() + entries := m.Entries() + optionals := make([]bool, len(entries)) + keys := make([]Interpretable, len(entries)) + vals := make([]Interpretable, len(entries)) + hasOptionals := false + for i, e := range entries { + entry := e.AsMapEntry() + keyVal, err := p.plan(entry.Key()) + if err != nil { + return nil, err + } + keys[i] = keyVal + + valVal, err := p.plan(entry.Value()) + if err != nil { + return nil, err + } + vals[i] = valVal + optionals[i] = entry.IsOptional() + hasOptionals = hasOptionals || entry.IsOptional() + } + return &evalMap{ + id: expr.ID(), + keys: keys, + vals: vals, + optionals: optionals, + hasOptionals: hasOptionals, + adapter: p.adapter, + }, nil +} + +// planCreateObj generates an object construction Interpretable. +func (p *planner) planCreateStruct(expr ast.Expr) (Interpretable, error) { + obj := expr.AsStruct() + typeName, defined := p.resolveTypeName(obj.TypeName()) + if !defined { + return nil, fmt.Errorf("unknown type: %s", obj.TypeName()) + } + objFields := obj.Fields() + optionals := make([]bool, len(objFields)) + fields := make([]string, len(objFields)) + vals := make([]Interpretable, len(objFields)) + hasOptionals := false + for i, f := range objFields { + field := f.AsStructField() + fields[i] = field.Name() + val, err := p.plan(field.Value()) + if err != nil { + return nil, err + } + vals[i] = val + optionals[i] = field.IsOptional() + hasOptionals = hasOptionals || field.IsOptional() + } + return &evalObj{ + id: expr.ID(), + typeName: typeName, + fields: fields, + vals: vals, + optionals: optionals, + hasOptionals: hasOptionals, + provider: p.provider, + }, nil +} + +// planComprehension generates an Interpretable fold operation. +func (p *planner) planComprehension(expr ast.Expr) (Interpretable, error) { + fold := expr.AsComprehension() + accu, err := p.plan(fold.AccuInit()) + if err != nil { + return nil, err + } + iterRange, err := p.plan(fold.IterRange()) + if err != nil { + return nil, err + } + cond, err := p.plan(fold.LoopCondition()) + if err != nil { + return nil, err + } + step, err := p.plan(fold.LoopStep()) + if err != nil { + return nil, err + } + result, err := p.plan(fold.Result()) + if err != nil { + return nil, err + } + return &evalFold{ + id: expr.ID(), + accuVar: fold.AccuVar(), + accu: accu, + iterVar: fold.IterVar(), + iterVar2: fold.IterVar2(), + iterRange: iterRange, + cond: cond, + step: step, + result: result, + adapter: p.adapter, + }, nil +} + +// planConst generates a constant valued Interpretable. +func (p *planner) planConst(expr ast.Expr) (Interpretable, error) { + return NewConstValue(expr.ID(), expr.AsLiteral()), nil +} + +// resolveTypeName takes a qualified string constructed at parse time, applies the proto +// namespace resolution rules to it in a scan over possible matching types in the TypeProvider. +func (p *planner) resolveTypeName(typeName string) (string, bool) { + for _, qualifiedTypeName := range p.container.ResolveCandidateNames(typeName) { + if _, found := p.provider.FindStructType(qualifiedTypeName); found { + return qualifiedTypeName, true + } + } + return "", false +} + +// resolveFunction determines the call target, function name, and overload name from a given Expr +// value. +// +// The resolveFunction resolves ambiguities where a function may either be a receiver-style +// invocation or a qualified global function name. +// - The target expression may only consist of ident and select expressions. +// - The function is declared in the environment using its fully-qualified name. +// - The fully-qualified function name matches the string serialized target value. +func (p *planner) resolveFunction(expr ast.Expr) (ast.Expr, string, string) { + // Note: similar logic exists within the `checker/checker.go`. If making changes here + // please consider the impact on checker.go and consolidate implementations or mirror code + // as appropriate. + call := expr.AsCall() + var target ast.Expr = nil + if call.IsMemberFunction() { + target = call.Target() + } + fnName := call.FunctionName() + + // Checked expressions always have a reference map entry, and _should_ have the fully qualified + // function name as the fnName value. + oRef, hasOverload := p.refMap[expr.ID()] + if hasOverload { + if len(oRef.OverloadIDs) == 1 { + return target, fnName, oRef.OverloadIDs[0] + } + // Note, this namespaced function name will not appear as a fully qualified name in ASTs + // built and stored before cel-go v0.5.0; however, this functionality did not work at all + // before the v0.5.0 release. + return target, fnName, "" + } + + // Parse-only expressions need to handle the same logic as is normally performed at check time, + // but with potentially much less information. The only reliable source of information about + // which functions are configured is the dispatcher. + if target == nil { + // If the user has a parse-only expression, then it should have been configured as such in + // the interpreter dispatcher as it may have been omitted from the checker environment. + for _, qualifiedName := range p.container.ResolveCandidateNames(fnName) { + _, found := p.disp.FindOverload(qualifiedName) + if found { + return nil, qualifiedName, "" + } + } + // It's possible that the overload was not found, but this situation is accounted for in + // the planCall phase; however, the leading dot used for denoting fully-qualified + // namespaced identifiers must be stripped, as all declarations already use fully-qualified + // names. This stripping behavior is handled automatically by the ResolveCandidateNames + // call. + return target, stripLeadingDot(fnName), "" + } + + // Handle the situation where the function target actually indicates a qualified function name. + qualifiedPrefix, maybeQualified := p.toQualifiedName(target) + if maybeQualified { + maybeQualifiedName := qualifiedPrefix + "." + fnName + for _, qualifiedName := range p.container.ResolveCandidateNames(maybeQualifiedName) { + _, found := p.disp.FindOverload(qualifiedName) + if found { + // Clear the target to ensure the proper arity is used for finding the + // implementation. + return nil, qualifiedName, "" + } + } + } + // In the default case, the function is exactly as it was advertised: a receiver call on with + // an expression-based target with the given simple function name. + return target, fnName, "" +} + +// relativeAttr indicates that the attribute in this case acts as a qualifier and as such needs to +// be observed to ensure that it's evaluation value is properly recorded for state tracking. +func (p *planner) relativeAttr(id int64, eval Interpretable, opt bool) (InterpretableAttribute, error) { + eAttr, ok := eval.(InterpretableAttribute) + if !ok { + eAttr = &evalAttr{ + adapter: p.adapter, + attr: p.attrFactory.RelativeAttribute(id, eval), + optional: opt, + } + } + // This looks like it should either decorate the new evalAttr node, or early return the InterpretableAttribute + decAttr, err := p.decorate(eAttr, nil) + if err != nil { + return nil, err + } + eAttr, ok = decAttr.(InterpretableAttribute) + if !ok { + return nil, fmt.Errorf("invalid attribute decoration: %v(%T)", decAttr, decAttr) + } + return eAttr, nil +} + +// toQualifiedName converts an expression AST into a qualified name if possible, with a boolean +// 'found' value that indicates if the conversion is successful. +func (p *planner) toQualifiedName(operand ast.Expr) (string, bool) { + // If the checker identified the expression as an attribute by the type-checker, then it can't + // possibly be part of qualified name in a namespace. + _, isAttr := p.refMap[operand.ID()] + if isAttr { + return "", false + } + // Since functions cannot be both namespaced and receiver functions, if the operand is not an + // qualified variable name, return the (possibly) qualified name given the expressions. + switch operand.Kind() { + case ast.IdentKind: + id := operand.AsIdent() + return id, true + case ast.SelectKind: + sel := operand.AsSelect() + // Test only expressions are not valid as qualified names. + if sel.IsTestOnly() { + return "", false + } + if qual, found := p.toQualifiedName(sel.Operand()); found { + return qual + "." + sel.FieldName(), true + } + } + return "", false +} + +func stripLeadingDot(name string) string { + if strings.HasPrefix(name, ".") { + return name[1:] + } + return name +} diff --git a/vendor/github.com/google/cel-go/interpreter/prune.go b/vendor/github.com/google/cel-go/interpreter/prune.go new file mode 100644 index 0000000000..1662c1c1b3 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/prune.go @@ -0,0 +1,574 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +type astPruner struct { + ast.ExprFactory + expr ast.Expr + macroCalls map[int64]ast.Expr + state EvalState + nextExprID int64 +} + +// TODO Consider having a separate walk of the AST that finds common +// subexpressions. This can be called before or after constant folding to find +// common subexpressions. + +// PruneAst prunes the given AST based on the given EvalState and generates a new AST. +// Given AST is copied on write and a new AST is returned. +// Couple of typical use cases this interface would be: +// +// A) +// 1) Evaluate expr with some unknowns, +// 2) If result is unknown: +// +// a) PruneAst +// b) Goto 1 +// +// Functional call results which are known would be effectively cached across +// iterations. +// +// B) +// 1) Compile the expression (maybe via a service and maybe after checking a +// +// compiled expression does not exists in local cache) +// +// 2) Prepare the environment and the interpreter. Activation might be empty. +// 3) Eval the expression. This might return unknown or error or a concrete +// +// value. +// +// 4) PruneAst +// 4) Maybe cache the expression +// This is effectively constant folding the expression. How the environment is +// prepared in step 2 is flexible. For example, If the caller caches the +// compiled and constant folded expressions, but is not willing to constant +// fold(and thus cache results of) some external calls, then they can prepare +// the overloads accordingly. +func PruneAst(expr ast.Expr, macroCalls map[int64]ast.Expr, state EvalState) *ast.AST { + pruneState := NewEvalState() + for _, id := range state.IDs() { + v, _ := state.Value(id) + pruneState.SetValue(id, v) + } + pruner := &astPruner{ + ExprFactory: ast.NewExprFactory(), + expr: expr, + macroCalls: macroCalls, + state: pruneState, + nextExprID: getMaxID(expr)} + newExpr, _ := pruner.maybePrune(expr) + newInfo := ast.NewSourceInfo(nil) + for id, call := range pruner.macroCalls { + newInfo.SetMacroCall(id, call) + } + return ast.NewAST(newExpr, newInfo) +} + +func (p *astPruner) maybeCreateLiteral(id int64, val ref.Val) (ast.Expr, bool) { + switch v := val.(type) { + case types.Bool, types.Bytes, types.Double, types.Int, types.Null, types.String, types.Uint, *types.Optional: + p.state.SetValue(id, val) + return p.NewLiteral(id, val), true + case types.Duration: + p.state.SetValue(id, val) + durationString := v.ConvertToType(types.StringType).(types.String) + return p.NewCall(id, overloads.TypeConvertDuration, p.NewLiteral(p.nextID(), durationString)), true + case types.Timestamp: + timestampString := v.ConvertToType(types.StringType).(types.String) + return p.NewCall(id, overloads.TypeConvertTimestamp, p.NewLiteral(p.nextID(), timestampString)), true + } + + // Attempt to build a list literal. + if list, isList := val.(traits.Lister); isList { + sz := list.Size().(types.Int) + elemExprs := make([]ast.Expr, sz) + for i := types.Int(0); i < sz; i++ { + elem := list.Get(i) + if types.IsUnknownOrError(elem) { + return nil, false + } + elemExpr, ok := p.maybeCreateLiteral(p.nextID(), elem) + if !ok { + return nil, false + } + elemExprs[i] = elemExpr + } + p.state.SetValue(id, val) + return p.NewList(id, elemExprs, []int32{}), true + } + + // Create a map literal if possible. + if mp, isMap := val.(traits.Mapper); isMap { + it := mp.Iterator() + entries := make([]ast.EntryExpr, mp.Size().(types.Int)) + i := 0 + for it.HasNext() != types.False { + key := it.Next() + val := mp.Get(key) + if types.IsUnknownOrError(key) || types.IsUnknownOrError(val) { + return nil, false + } + keyExpr, ok := p.maybeCreateLiteral(p.nextID(), key) + if !ok { + return nil, false + } + valExpr, ok := p.maybeCreateLiteral(p.nextID(), val) + if !ok { + return nil, false + } + entry := p.NewMapEntry(p.nextID(), keyExpr, valExpr, false) + entries[i] = entry + i++ + } + p.state.SetValue(id, val) + return p.NewMap(id, entries), true + } + + // TODO(issues/377) To construct message literals, the type provider will need to support + // the enumeration the fields for a given message. + return nil, false +} + +func (p *astPruner) maybePruneOptional(elem ast.Expr) (ast.Expr, bool) { + elemVal, found := p.value(elem.ID()) + if found && elemVal.Type() == types.OptionalType { + opt := elemVal.(*types.Optional) + if !opt.HasValue() { + return nil, true + } + if newElem, pruned := p.maybeCreateLiteral(elem.ID(), opt.GetValue()); pruned { + return newElem, true + } + } + return elem, false +} + +func (p *astPruner) maybePruneIn(node ast.Expr) (ast.Expr, bool) { + // elem in list + call := node.AsCall() + val, exists := p.maybeValue(call.Args()[1].ID()) + if !exists { + return nil, false + } + if sz, ok := val.(traits.Sizer); ok && sz.Size() == types.IntZero { + return p.maybeCreateLiteral(node.ID(), types.False) + } + return nil, false +} + +func (p *astPruner) maybePruneLogicalNot(node ast.Expr) (ast.Expr, bool) { + call := node.AsCall() + arg := call.Args()[0] + val, exists := p.maybeValue(arg.ID()) + if !exists { + return nil, false + } + if b, ok := val.(types.Bool); ok { + return p.maybeCreateLiteral(node.ID(), !b) + } + return nil, false +} + +func (p *astPruner) maybePruneOr(node ast.Expr) (ast.Expr, bool) { + call := node.AsCall() + // We know result is unknown, so we have at least one unknown arg + // and if one side is a known value, we know we can ignore it. + if v, exists := p.maybeValue(call.Args()[0].ID()); exists { + if v == types.True { + return p.maybeCreateLiteral(node.ID(), types.True) + } + return call.Args()[1], true + } + if v, exists := p.maybeValue(call.Args()[1].ID()); exists { + if v == types.True { + return p.maybeCreateLiteral(node.ID(), types.True) + } + return call.Args()[0], true + } + return nil, false +} + +func (p *astPruner) maybePruneAnd(node ast.Expr) (ast.Expr, bool) { + call := node.AsCall() + // We know result is unknown, so we have at least one unknown arg + // and if one side is a known value, we know we can ignore it. + if v, exists := p.maybeValue(call.Args()[0].ID()); exists { + if v == types.False { + return p.maybeCreateLiteral(node.ID(), types.False) + } + return call.Args()[1], true + } + if v, exists := p.maybeValue(call.Args()[1].ID()); exists { + if v == types.False { + return p.maybeCreateLiteral(node.ID(), types.False) + } + return call.Args()[0], true + } + return nil, false +} + +func (p *astPruner) maybePruneConditional(node ast.Expr) (ast.Expr, bool) { + call := node.AsCall() + cond, exists := p.maybeValue(call.Args()[0].ID()) + if !exists { + return nil, false + } + if cond.Value().(bool) { + return call.Args()[1], true + } + return call.Args()[2], true +} + +func (p *astPruner) maybePruneFunction(node ast.Expr) (ast.Expr, bool) { + if _, exists := p.value(node.ID()); !exists { + return nil, false + } + call := node.AsCall() + if call.FunctionName() == operators.LogicalOr { + return p.maybePruneOr(node) + } + if call.FunctionName() == operators.LogicalAnd { + return p.maybePruneAnd(node) + } + if call.FunctionName() == operators.Conditional { + return p.maybePruneConditional(node) + } + if call.FunctionName() == operators.In { + return p.maybePruneIn(node) + } + if call.FunctionName() == operators.LogicalNot { + return p.maybePruneLogicalNot(node) + } + return nil, false +} + +func (p *astPruner) maybePrune(node ast.Expr) (ast.Expr, bool) { + return p.prune(node) +} + +func (p *astPruner) prune(node ast.Expr) (ast.Expr, bool) { + if node == nil { + return node, false + } + val, valueExists := p.maybeValue(node.ID()) + if valueExists { + if newNode, ok := p.maybeCreateLiteral(node.ID(), val); ok { + delete(p.macroCalls, node.ID()) + return newNode, true + } + } + if macro, found := p.macroCalls[node.ID()]; found { + // Ensure that intermediate values for the comprehension are cleared during pruning + pruneMacroCall := node.Kind() != ast.UnspecifiedExprKind + if node.Kind() == ast.ComprehensionKind { + // Only prune cel.bind() calls since the variables of the comprehension are all + // visible to the user, so there's no chance of an incorrect value being observed + // as a result of looking at intermediate computations within a comprehension. + pruneMacroCall = isCelBindMacro(macro) + } + if pruneMacroCall { + // prune the expression in terms of the macro call instead of the expanded form when + // dealing with macro call tracking references. + if newMacro, pruned := p.prune(macro); pruned { + p.macroCalls[node.ID()] = newMacro + } + } else { + // Otherwise just prune the macro target in keeping with the pruning behavior of the + // comprehensions later in the call graph. + macroCall := macro.AsCall() + if macroCall.Target() != nil { + if newTarget, pruned := p.prune(macroCall.Target()); pruned { + macro = p.NewMemberCall(macro.ID(), macroCall.FunctionName(), newTarget, macroCall.Args()...) + p.macroCalls[node.ID()] = macro + } + } + } + } + + // We have either an unknown/error value, or something we don't want to + // transform, or expression was not evaluated. If possible, drill down + // more. + switch node.Kind() { + case ast.SelectKind: + sel := node.AsSelect() + if operand, isPruned := p.maybePrune(sel.Operand()); isPruned { + if sel.IsTestOnly() { + return p.NewPresenceTest(node.ID(), operand, sel.FieldName()), true + } + return p.NewSelect(node.ID(), operand, sel.FieldName()), true + } + case ast.CallKind: + argsPruned := false + call := node.AsCall() + args := call.Args() + newArgs := make([]ast.Expr, len(args)) + for i, a := range args { + newArgs[i] = a + if arg, isPruned := p.maybePrune(a); isPruned { + argsPruned = true + newArgs[i] = arg + } + } + if !call.IsMemberFunction() { + newCall := p.NewCall(node.ID(), call.FunctionName(), newArgs...) + if prunedCall, isPruned := p.maybePruneFunction(newCall); isPruned { + return prunedCall, true + } + return newCall, argsPruned + } + newTarget := call.Target() + targetPruned := false + if prunedTarget, isPruned := p.maybePrune(call.Target()); isPruned { + targetPruned = true + newTarget = prunedTarget + } + newCall := p.NewMemberCall(node.ID(), call.FunctionName(), newTarget, newArgs...) + if prunedCall, isPruned := p.maybePruneFunction(newCall); isPruned { + return prunedCall, true + } + return newCall, targetPruned || argsPruned + case ast.ListKind: + l := node.AsList() + elems := l.Elements() + optIndices := l.OptionalIndices() + optIndexMap := map[int32]bool{} + for _, i := range optIndices { + optIndexMap[i] = true + } + newOptIndexMap := make(map[int32]bool, len(optIndexMap)) + newElems := make([]ast.Expr, 0, len(elems)) + var listPruned bool + prunedIdx := 0 + for i, elem := range elems { + _, isOpt := optIndexMap[int32(i)] + if isOpt { + newElem, pruned := p.maybePruneOptional(elem) + if pruned { + listPruned = true + if newElem != nil { + newElems = append(newElems, newElem) + prunedIdx++ + } + continue + } + newOptIndexMap[int32(prunedIdx)] = true + } + if newElem, prunedElem := p.maybePrune(elem); prunedElem { + newElems = append(newElems, newElem) + listPruned = true + } else { + newElems = append(newElems, elem) + } + prunedIdx++ + } + optIndices = make([]int32, len(newOptIndexMap)) + idx := 0 + for i := range newOptIndexMap { + optIndices[idx] = i + idx++ + } + if listPruned { + return p.NewList(node.ID(), newElems, optIndices), true + } + case ast.MapKind: + var mapPruned bool + m := node.AsMap() + entries := m.Entries() + newEntries := make([]ast.EntryExpr, len(entries)) + for i, entry := range entries { + newEntries[i] = entry + e := entry.AsMapEntry() + newKey, keyPruned := p.maybePrune(e.Key()) + newValue, valuePruned := p.maybePrune(e.Value()) + if !keyPruned && !valuePruned { + continue + } + mapPruned = true + newEntry := p.NewMapEntry(entry.ID(), newKey, newValue, e.IsOptional()) + newEntries[i] = newEntry + } + if mapPruned { + return p.NewMap(node.ID(), newEntries), true + } + case ast.StructKind: + var structPruned bool + obj := node.AsStruct() + fields := obj.Fields() + newFields := make([]ast.EntryExpr, len(fields)) + for i, field := range fields { + newFields[i] = field + f := field.AsStructField() + newValue, prunedValue := p.maybePrune(f.Value()) + if !prunedValue { + continue + } + structPruned = true + newEntry := p.NewStructField(field.ID(), f.Name(), newValue, f.IsOptional()) + newFields[i] = newEntry + } + if structPruned { + return p.NewStruct(node.ID(), obj.TypeName(), newFields), true + } + case ast.ComprehensionKind: + compre := node.AsComprehension() + // Only the range of the comprehension is pruned since the state tracking only records + // the last iteration of the comprehension and not each step in the evaluation which + // means that the any residuals computed in between might be inaccurate. + if newRange, pruned := p.maybePrune(compre.IterRange()); pruned { + if compre.HasIterVar2() { + return p.NewComprehensionTwoVar( + node.ID(), + newRange, + compre.IterVar(), + compre.IterVar2(), + compre.AccuVar(), + compre.AccuInit(), + compre.LoopCondition(), + compre.LoopStep(), + compre.Result(), + ), true + } + return p.NewComprehension( + node.ID(), + newRange, + compre.IterVar(), + compre.AccuVar(), + compre.AccuInit(), + compre.LoopCondition(), + compre.LoopStep(), + compre.Result(), + ), true + } + } + return node, false +} + +func (p *astPruner) value(id int64) (ref.Val, bool) { + val, found := p.state.Value(id) + return val, (found && val != nil) +} + +func (p *astPruner) maybeValue(id int64) (ref.Val, bool) { + val, found := p.value(id) + if !found || types.IsUnknownOrError(val) { + return nil, false + } + return val, true +} + +func (p *astPruner) nextID() int64 { + next := p.nextExprID + p.nextExprID++ + return next +} + +type astVisitor struct { + // visitEntry is called on every expr node, including those within a map/struct entry. + visitExpr func(expr ast.Expr) + // visitEntry is called before entering the key, value of a map/struct entry. + visitEntry func(entry ast.EntryExpr) +} + +func getMaxID(expr ast.Expr) int64 { + maxID := int64(1) + visit(expr, maxIDVisitor(&maxID)) + return maxID +} + +func maxIDVisitor(maxID *int64) astVisitor { + return astVisitor{ + visitExpr: func(e ast.Expr) { + if e.ID() >= *maxID { + *maxID = e.ID() + 1 + } + }, + visitEntry: func(e ast.EntryExpr) { + if e.ID() >= *maxID { + *maxID = e.ID() + 1 + } + }, + } +} + +func visit(expr ast.Expr, visitor astVisitor) { + exprs := []ast.Expr{expr} + for len(exprs) != 0 { + e := exprs[0] + if visitor.visitExpr != nil { + visitor.visitExpr(e) + } + exprs = exprs[1:] + switch e.Kind() { + case ast.SelectKind: + exprs = append(exprs, e.AsSelect().Operand()) + case ast.CallKind: + call := e.AsCall() + if call.Target() != nil { + exprs = append(exprs, call.Target()) + } + exprs = append(exprs, call.Args()...) + case ast.ComprehensionKind: + compre := e.AsComprehension() + exprs = append(exprs, + compre.IterRange(), + compre.AccuInit(), + compre.LoopCondition(), + compre.LoopStep(), + compre.Result()) + case ast.ListKind: + list := e.AsList() + exprs = append(exprs, list.Elements()...) + case ast.MapKind: + for _, entry := range e.AsMap().Entries() { + e := entry.AsMapEntry() + if visitor.visitEntry != nil { + visitor.visitEntry(entry) + } + exprs = append(exprs, e.Key()) + exprs = append(exprs, e.Value()) + } + case ast.StructKind: + for _, entry := range e.AsStruct().Fields() { + f := entry.AsStructField() + if visitor.visitEntry != nil { + visitor.visitEntry(entry) + } + exprs = append(exprs, f.Value()) + } + } + } +} + +func isCelBindMacro(macro ast.Expr) bool { + if macro.Kind() != ast.CallKind { + return false + } + macroCall := macro.AsCall() + target := macroCall.Target() + return macroCall.FunctionName() == "bind" && + macroCall.IsMemberFunction() && + target.Kind() == ast.IdentKind && + target.AsIdent() == "cel" +} diff --git a/vendor/github.com/google/cel-go/interpreter/runtimecost.go b/vendor/github.com/google/cel-go/interpreter/runtimecost.go new file mode 100644 index 0000000000..6c44cd7986 --- /dev/null +++ b/vendor/github.com/google/cel-go/interpreter/runtimecost.go @@ -0,0 +1,415 @@ +// Copyright 2022 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package interpreter + +import ( + "errors" + "math" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/overloads" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" + "github.com/google/cel-go/common/types/traits" +) + +// WARNING: Any changes to cost calculations in this file require a corresponding change in checker/cost.go + +// ActualCostEstimator provides function call cost estimations at runtime +// CallCost returns an estimated cost for the function overload invocation with the given args, or nil if it has no +// estimate to provide. CEL attempts to provide reasonable estimates for its standard function library, so CallCost +// should typically not need to provide an estimate for CELs standard function. +type ActualCostEstimator interface { + CallCost(function, overloadID string, args []ref.Val, result ref.Val) *uint64 +} + +// costTrackPlanOption modifies the cost tracking factory associatied with the CostObserver +type costTrackPlanOption func(*costTrackerFactory) *costTrackerFactory + +// CostTrackerFactory configures the factory method to generate a new cost-tracker per-evaluation. +func CostTrackerFactory(factory func() (*CostTracker, error)) costTrackPlanOption { + return func(fac *costTrackerFactory) *costTrackerFactory { + fac.factory = factory + return fac + } +} + +// CostObserver provides an observer that tracks runtime cost. +func CostObserver(opts ...costTrackPlanOption) PlannerOption { + ct := &costTrackerFactory{} + for _, o := range opts { + ct = o(ct) + } + return func(p *planner) (*planner, error) { + if ct.factory == nil { + return nil, errors.New("cost tracker factory not configured") + } + p.observers = append(p.observers, ct) + p.decorators = append(p.decorators, decObserveEval(ct.Observe)) + return p, nil + } +} + +// costTrackerConverter identifies an object which is convertible to a CostTracker instance. +type costTrackerConverter interface { + asCostTracker() *CostTracker +} + +// costTrackActivation hides state in the Activation in a manner not accessible to expressions. +type costTrackActivation struct { + vars Activation + costTracker *CostTracker +} + +// ResolveName proxies variable lookups to the backing activation. +func (cta costTrackActivation) ResolveName(name string) (any, bool) { + return cta.vars.ResolveName(name) +} + +// Parent proxies parent lookups to the backing activation. +func (cta costTrackActivation) Parent() Activation { + return cta.vars +} + +// AsPartialActivation supports conversion to a partial activation in order to detect unknown attributes. +func (cta costTrackActivation) AsPartialActivation() (PartialActivation, bool) { + return AsPartialActivation(cta.vars) +} + +// asCostTracker implements the costTrackerConverter method. +func (cta costTrackActivation) asCostTracker() *CostTracker { + return cta.costTracker +} + +// asCostTracker walks the Activation hierarchy and returns the first cost tracker found, if present. +func asCostTracker(vars Activation) (*CostTracker, bool) { + if conv, ok := vars.(costTrackerConverter); ok { + return conv.asCostTracker(), true + } + if vars.Parent() != nil { + return asCostTracker(vars.Parent()) + } + return nil, false +} + +// costTrackerFactory holds a factory for producing new CostTracker instances on each Eval call. +type costTrackerFactory struct { + factory func() (*CostTracker, error) +} + +// InitState produces a CostTracker and bundles it into an Activation in a way which is not visible +// to expression evaluation. +func (ct *costTrackerFactory) InitState(vars Activation) (Activation, error) { + tracker, err := ct.factory() + if err != nil { + return nil, err + } + return costTrackActivation{vars: vars, costTracker: tracker}, nil +} + +// GetState extracts the CostTracker from the Activation. +func (ct *costTrackerFactory) GetState(vars Activation) any { + if tracker, found := asCostTracker(vars); found { + return tracker + } + return nil +} + +// Observe computes the incremental cost of each step and records it into the CostTracker associated +// with the evaluation. +func (ct *costTrackerFactory) Observe(vars Activation, id int64, programStep any, val ref.Val) { + tracker, found := asCostTracker(vars) + if !found { + return + } + switch t := programStep.(type) { + case ConstantQualifier: + // TODO: Push identifiers on to the stack before observing constant qualifiers that apply to them + // and enable the below pop. Once enabled this can case can be collapsed into the Qualifier case. + tracker.cost++ + case InterpretableConst: + // zero cost + case InterpretableAttribute: + switch a := t.Attr().(type) { + case *conditionalAttribute: + // Ternary has no direct cost. All cost is from the conditional and the true/false branch expressions. + tracker.stack.drop(a.falsy.ID(), a.truthy.ID(), a.expr.ID()) + default: + tracker.stack.drop(t.Attr().ID()) + tracker.cost += common.SelectAndIdentCost + } + if !tracker.presenceTestHasCost { + if _, isTestOnly := programStep.(*evalTestOnly); isTestOnly { + tracker.cost -= common.SelectAndIdentCost + } + } + case *evalExhaustiveConditional: + // Ternary has no direct cost. All cost is from the conditional and the true/false branch expressions. + tracker.stack.drop(t.attr.falsy.ID(), t.attr.truthy.ID(), t.attr.expr.ID()) + + // While the field names are identical, the boolean operation eval structs do not share an interface and so + // must be handled individually. + case *evalOr: + for _, term := range t.terms { + tracker.stack.drop(term.ID()) + } + case *evalAnd: + for _, term := range t.terms { + tracker.stack.drop(term.ID()) + } + case *evalExhaustiveOr: + for _, term := range t.terms { + tracker.stack.drop(term.ID()) + } + case *evalExhaustiveAnd: + for _, term := range t.terms { + tracker.stack.drop(term.ID()) + } + case *evalFold: + tracker.stack.drop(t.iterRange.ID()) + case Qualifier: + tracker.cost++ + case InterpretableCall: + if argVals, ok := tracker.stack.dropArgs(t.Args()); ok { + tracker.cost += tracker.costCall(t, argVals, val) + } + case InterpretableConstructor: + tracker.stack.dropArgs(t.InitVals()) + switch t.Type() { + case types.ListType: + tracker.cost += common.ListCreateBaseCost + case types.MapType: + tracker.cost += common.MapCreateBaseCost + default: + tracker.cost += common.StructCreateBaseCost + } + } + tracker.stack.push(val, id) + + if tracker.Limit != nil && tracker.cost > *tracker.Limit { + panic(EvalCancelledError{Cause: CostLimitExceeded, Message: "operation cancelled: actual cost limit exceeded"}) + } +} + +// CostTrackerOption configures the behavior of CostTracker objects. +type CostTrackerOption func(*CostTracker) error + +// CostTrackerLimit sets the runtime limit on the evaluation cost during execution and will terminate the expression +// evaluation if the limit is exceeded. +func CostTrackerLimit(limit uint64) CostTrackerOption { + return func(tracker *CostTracker) error { + tracker.Limit = &limit + return nil + } +} + +// PresenceTestHasCost determines whether presence testing has a cost of one or zero. +// Defaults to presence test has a cost of one. +func PresenceTestHasCost(hasCost bool) CostTrackerOption { + return func(tracker *CostTracker) error { + tracker.presenceTestHasCost = hasCost + return nil + } +} + +// NewCostTracker creates a new CostTracker with a given estimator and a set of functional CostTrackerOption values. +func NewCostTracker(estimator ActualCostEstimator, opts ...CostTrackerOption) (*CostTracker, error) { + tracker := &CostTracker{ + Estimator: estimator, + overloadTrackers: map[string]FunctionTracker{}, + presenceTestHasCost: true, + } + for _, opt := range opts { + err := opt(tracker) + if err != nil { + return nil, err + } + } + return tracker, nil +} + +// OverloadCostTracker binds an overload ID to a runtime FunctionTracker implementation. +// +// OverloadCostTracker instances augment or override ActualCostEstimator decisions, allowing for versioned and/or +// optional cost tracking changes. +func OverloadCostTracker(overloadID string, fnTracker FunctionTracker) CostTrackerOption { + return func(tracker *CostTracker) error { + tracker.overloadTrackers[overloadID] = fnTracker + return nil + } +} + +// FunctionTracker computes the actual cost of evaluating the functions with the given arguments and result. +type FunctionTracker func(args []ref.Val, result ref.Val) *uint64 + +// CostTracker represents the information needed for tracking runtime cost. +type CostTracker struct { + Estimator ActualCostEstimator + overloadTrackers map[string]FunctionTracker + Limit *uint64 + presenceTestHasCost bool + + cost uint64 + stack refValStack +} + +// ActualCost returns the runtime cost +func (c *CostTracker) ActualCost() uint64 { + return c.cost +} + +func (c *CostTracker) costCall(call InterpretableCall, args []ref.Val, result ref.Val) uint64 { + var cost uint64 + if len(c.overloadTrackers) != 0 { + if tracker, found := c.overloadTrackers[call.OverloadID()]; found { + callCost := tracker(args, result) + if callCost != nil { + cost += *callCost + return cost + } + } + } + if c.Estimator != nil { + callCost := c.Estimator.CallCost(call.Function(), call.OverloadID(), args, result) + if callCost != nil { + cost += *callCost + return cost + } + } + // if user didn't specify, the default way of calculating runtime cost would be used. + // if user has their own implementation of ActualCostEstimator, make sure to cover the mapping between overloadId and cost calculation + switch call.OverloadID() { + // O(n) functions + case overloads.StartsWithString, overloads.EndsWithString, overloads.StringToBytes, overloads.BytesToString, overloads.ExtQuoteString, overloads.ExtFormatString: + cost += uint64(math.Ceil(float64(actualSize(args[0])) * common.StringTraversalCostFactor)) + case overloads.InList: + // If a list is composed entirely of constant values this is O(1), but we don't account for that here. + // We just assume all list containment checks are O(n). + cost += actualSize(args[1]) + // O(min(m, n)) functions + case overloads.LessString, overloads.GreaterString, overloads.LessEqualsString, overloads.GreaterEqualsString, + overloads.LessBytes, overloads.GreaterBytes, overloads.LessEqualsBytes, overloads.GreaterEqualsBytes, + overloads.Equals, overloads.NotEquals: + // When we check the equality of 2 scalar values (e.g. 2 integers, 2 floating-point numbers, 2 booleans etc.), + // the CostTracker.ActualSize() function by definition returns 1 for each operand, resulting in an overall cost + // of 1. + lhsSize := actualSize(args[0]) + rhsSize := actualSize(args[1]) + minSize := lhsSize + if rhsSize < minSize { + minSize = rhsSize + } + cost += uint64(math.Ceil(float64(minSize) * common.StringTraversalCostFactor)) + // O(m+n) functions + case overloads.AddString, overloads.AddBytes: + // In the worst case scenario, we would need to reallocate a new backing store and copy both operands over. + cost += uint64(math.Ceil(float64(actualSize(args[0])+actualSize(args[1])) * common.StringTraversalCostFactor)) + // O(nm) functions + case overloads.MatchesString: + // https://swtch.com/~rsc/regexp/regexp1.html applies to RE2 implementation supported by CEL + // Add one to string length for purposes of cost calculation to prevent product of string and regex to be 0 + // in case where string is empty but regex is still expensive. + strCost := uint64(math.Ceil((1.0 + float64(actualSize(args[0]))) * common.StringTraversalCostFactor)) + // We don't know how many expressions are in the regex, just the string length (a huge + // improvement here would be to somehow get a count the number of expressions in the regex or + // how many states are in the regex state machine and use that to measure regex cost). + // For now, we're making a guess that each expression in a regex is typically at least 4 chars + // in length. + regexCost := uint64(math.Ceil(float64(actualSize(args[1])) * common.RegexStringLengthCostFactor)) + cost += strCost * regexCost + case overloads.ContainsString: + strCost := uint64(math.Ceil(float64(actualSize(args[0])) * common.StringTraversalCostFactor)) + substrCost := uint64(math.Ceil(float64(actualSize(args[1])) * common.StringTraversalCostFactor)) + cost += strCost * substrCost + + default: + // The following operations are assumed to have O(1) complexity. + // - AddList due to the implementation. Index lookup can be O(c) the + // number of concatenated lists, but we don't track that is cost calculations. + // - Conversions, since none perform a traversal of a type of unbound length. + // - Computing the size of strings, byte sequences, lists and maps. + // - Logical operations and all operators on fixed width scalars (comparisons, equality) + // - Any functions that don't have a declared cost either here or in provided ActualCostEstimator. + cost++ + + } + return cost +} + +// actualSize returns the size of the value for all traits.Sizer values, a fixed size for all proto-based +// objects, and a size of 1 for all other value types. +func actualSize(value ref.Val) uint64 { + if sz, ok := value.(traits.Sizer); ok { + return uint64(sz.Size().(types.Int)) + } + if opt, ok := value.(*types.Optional); ok && opt.HasValue() { + return actualSize(opt.GetValue()) + } + return 1 +} + +type stackVal struct { + Val ref.Val + ID int64 +} + +// refValStack keeps track of values of the stack for cost calculation purposes +type refValStack []stackVal + +func (s *refValStack) push(val ref.Val, id int64) { + value := stackVal{Val: val, ID: id} + *s = append(*s, value) +} + +// TODO: Allowing drop and dropArgs to remove stack items above the IDs they are provided is a workaround. drop and dropArgs +// should find and remove only the stack items matching the provided IDs once all attributes are properly pushed and popped from stack. + +// drop searches the stack for each ID and removes the ID and all stack items above it. +// If none of the IDs are found, the stack is not modified. +// WARNING: It is possible for multiple expressions with the same ID to exist (due to how macros are implemented) so it's +// possible that a dropped ID will remain on the stack. They should be removed when IDs on the stack are popped. +func (s *refValStack) drop(ids ...int64) { + for _, id := range ids { + for idx := len(*s) - 1; idx >= 0; idx-- { + if (*s)[idx].ID == id { + *s = (*s)[:idx] + break + } + } + } +} + +// dropArgs searches the stack for all the args by their IDs, accumulates their associated ref.Vals and drops any +// stack items above any of the arg IDs. If any of the IDs are not found the stack, false is returned. +// Args are assumed to be found in the stack in reverse order, i.e. the last arg is expected to be found highest in +// the stack. +// WARNING: It is possible for multiple expressions with the same ID to exist (due to how macros are implemented) so it's +// possible that a dropped ID will remain on the stack. They should be removed when IDs on the stack are popped. +func (s *refValStack) dropArgs(args []Interpretable) ([]ref.Val, bool) { + result := make([]ref.Val, len(args)) +argloop: + for nIdx := len(args) - 1; nIdx >= 0; nIdx-- { + for idx := len(*s) - 1; idx >= 0; idx-- { + if (*s)[idx].ID == args[nIdx].ID() { + el := (*s)[idx] + *s = (*s)[:idx] + result[nIdx] = el.Val + continue argloop + } + } + return nil, false + } + return result, true +} diff --git a/vendor/github.com/google/cel-go/parser/BUILD.bazel b/vendor/github.com/google/cel-go/parser/BUILD.bazel new file mode 100644 index 0000000000..97bc9bd434 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/BUILD.bazel @@ -0,0 +1,58 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test") + +package( + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "errors.go", + "helper.go", + "input.go", + "macro.go", + "options.go", + "parser.go", + "unescape.go", + "unparser.go", + ], + importpath = "github.com/google/cel-go/parser", + visibility = ["//visibility:public"], + deps = [ + "//common:go_default_library", + "//common/ast:go_default_library", + "//common/operators:go_default_library", + "//common/runes:go_default_library", + "//common/types:go_default_library", + "//common/types/ref:go_default_library", + "//parser/gen:go_default_library", + "@com_github_antlr4_go_antlr_v4//:go_default_library", + "@org_golang_google_genproto_googleapis_api//expr/v1alpha1:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//types/known/structpb:go_default_library", + ], +) + +go_test( + name = "go_default_test", + size = "small", + srcs = [ + "helper_test.go", + "parser_test.go", + "unescape_test.go", + "unparser_test.go", + ], + embed = [ + ":go_default_library", + ], + deps = [ + "//common/ast:go_default_library", + "//common/debug:go_default_library", + "//common/types:go_default_library", + "//parser/gen:go_default_library", + "//test:go_default_library", + "@com_github_antlr4_go_antlr_v4//:go_default_library", + "@org_golang_google_protobuf//proto:go_default_library", + "@org_golang_google_protobuf//testing/protocmp:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/parser/errors.go b/vendor/github.com/google/cel-go/parser/errors.go new file mode 100644 index 0000000000..c3cec01a8d --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/errors.go @@ -0,0 +1,41 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import ( + "github.com/google/cel-go/common" +) + +// parseErrors is a specialization of Errors. +type parseErrors struct { + errs *common.Errors +} + +// errorCount indicates the number of errors reported. +func (e *parseErrors) errorCount() int { + return len(e.errs.GetErrors()) +} + +func (e *parseErrors) internalError(message string) { + e.errs.ReportErrorAtID(0, common.NoLocation, "%s", message) +} + +func (e *parseErrors) syntaxError(l common.Location, message string) { + e.errs.ReportErrorAtID(0, l, "Syntax error: %s", message) +} + +func (e *parseErrors) reportErrorAtID(id int64, l common.Location, message string, args ...any) { + e.errs.ReportErrorAtID(id, l, message, args...) +} diff --git a/vendor/github.com/google/cel-go/parser/gen/BUILD.bazel b/vendor/github.com/google/cel-go/parser/gen/BUILD.bazel new file mode 100644 index 0000000000..3efed87b70 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/BUILD.bazel @@ -0,0 +1,26 @@ +load("@io_bazel_rules_go//go:def.bzl", "go_library") + +package( + default_visibility = ["//:__subpackages__"], + licenses = ["notice"], # Apache 2.0 +) + +go_library( + name = "go_default_library", + srcs = [ + "cel_base_listener.go", + "cel_base_visitor.go", + "cel_lexer.go", + "cel_listener.go", + "cel_parser.go", + "cel_visitor.go", + ], + data = [ + "CEL.tokens", + "CELLexer.tokens", + ], + importpath = "github.com/google/cel-go/parser/gen", + deps = [ + "@com_github_antlr4_go_antlr_v4//:go_default_library", + ], +) diff --git a/vendor/github.com/google/cel-go/parser/gen/CEL.g4 b/vendor/github.com/google/cel-go/parser/gen/CEL.g4 new file mode 100644 index 0000000000..ee53a844bd --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/CEL.g4 @@ -0,0 +1,207 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +grammar CEL; + +// Grammar Rules +// ============= + +start + : e=expr EOF + ; + +expr + : e=conditionalOr (op='?' e1=conditionalOr ':' e2=expr)? + ; + +conditionalOr + : e=conditionalAnd (ops+='||' e1+=conditionalAnd)* + ; + +conditionalAnd + : e=relation (ops+='&&' e1+=relation)* + ; + +relation + : calc + | relation op=('<'|'<='|'>='|'>'|'=='|'!='|'in') relation + ; + +calc + : unary + | calc op=('*'|'/'|'%') calc + | calc op=('+'|'-') calc + ; + +unary + : member # MemberExpr + | (ops+='!')+ member # LogicalNot + | (ops+='-')+ member # Negate + ; + +member + : primary # PrimaryExpr + | member op='.' (opt='?')? id=escapeIdent # Select + | member op='.' id=IDENTIFIER open='(' args=exprList? ')' # MemberCall + | member op='[' (opt='?')? index=expr ']' # Index + ; + +primary + : leadingDot='.'? id=IDENTIFIER # Ident + | leadingDot='.'? id=IDENTIFIER (op='(' args=exprList? ')') # GlobalCall + | '(' e=expr ')' # Nested + | op='[' elems=listInit? ','? ']' # CreateList + | op='{' entries=mapInitializerList? ','? '}' # CreateStruct + | leadingDot='.'? ids+=IDENTIFIER (ops+='.' ids+=IDENTIFIER)* + op='{' entries=fieldInitializerList? ','? '}' # CreateMessage + | literal # ConstantLiteral + ; + +exprList + : e+=expr (',' e+=expr)* + ; + +listInit + : elems+=optExpr (',' elems+=optExpr)* + ; + +fieldInitializerList + : fields+=optField cols+=':' values+=expr (',' fields+=optField cols+=':' values+=expr)* + ; + +optField + : (opt='?')? escapeIdent + ; + +mapInitializerList + : keys+=optExpr cols+=':' values+=expr (',' keys+=optExpr cols+=':' values+=expr)* + ; + +escapeIdent + : id=IDENTIFIER # SimpleIdentifier + | id=ESC_IDENTIFIER # EscapedIdentifier +; + +optExpr + : (opt='?')? e=expr + ; + +literal + : sign=MINUS? tok=NUM_INT # Int + | tok=NUM_UINT # Uint + | sign=MINUS? tok=NUM_FLOAT # Double + | tok=STRING # String + | tok=BYTES # Bytes + | tok=CEL_TRUE # BoolTrue + | tok=CEL_FALSE # BoolFalse + | tok=NUL # Null + ; + +// Lexer Rules +// =========== + +EQUALS : '=='; +NOT_EQUALS : '!='; +IN: 'in'; +LESS : '<'; +LESS_EQUALS : '<='; +GREATER_EQUALS : '>='; +GREATER : '>'; +LOGICAL_AND : '&&'; +LOGICAL_OR : '||'; + +LBRACKET : '['; +RPRACKET : ']'; +LBRACE : '{'; +RBRACE : '}'; +LPAREN : '('; +RPAREN : ')'; +DOT : '.'; +COMMA : ','; +MINUS : '-'; +EXCLAM : '!'; +QUESTIONMARK : '?'; +COLON : ':'; +PLUS : '+'; +STAR : '*'; +SLASH : '/'; +PERCENT : '%'; +CEL_TRUE : 'true'; +CEL_FALSE : 'false'; +NUL : 'null'; + +fragment BACKSLASH : '\\'; +fragment LETTER : 'A'..'Z' | 'a'..'z' ; +fragment DIGIT : '0'..'9' ; +fragment EXPONENT : ('e' | 'E') ( '+' | '-' )? DIGIT+ ; +fragment HEXDIGIT : ('0'..'9'|'a'..'f'|'A'..'F') ; +fragment RAW : 'r' | 'R'; + +fragment ESC_SEQ + : ESC_CHAR_SEQ + | ESC_BYTE_SEQ + | ESC_UNI_SEQ + | ESC_OCT_SEQ + ; + +fragment ESC_CHAR_SEQ + : BACKSLASH ('a'|'b'|'f'|'n'|'r'|'t'|'v'|'"'|'\''|'\\'|'?'|'`') + ; + +fragment ESC_OCT_SEQ + : BACKSLASH ('0'..'3') ('0'..'7') ('0'..'7') + ; + +fragment ESC_BYTE_SEQ + : BACKSLASH ( 'x' | 'X' ) HEXDIGIT HEXDIGIT + ; + +fragment ESC_UNI_SEQ + : BACKSLASH 'u' HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT + | BACKSLASH 'U' HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT + ; + +WHITESPACE : ( '\t' | ' ' | '\r' | '\n'| '\u000C' )+ -> channel(HIDDEN) ; +COMMENT : '//' (~'\n')* -> channel(HIDDEN) ; + +NUM_FLOAT + : ( DIGIT+ ('.' DIGIT+) EXPONENT? + | DIGIT+ EXPONENT + | '.' DIGIT+ EXPONENT? + ) + ; + +NUM_INT + : ( DIGIT+ | '0x' HEXDIGIT+ ); + +NUM_UINT + : DIGIT+ ( 'u' | 'U' ) + | '0x' HEXDIGIT+ ( 'u' | 'U' ) + ; + +STRING + : '"' (ESC_SEQ | ~('\\'|'"'|'\n'|'\r'))* '"' + | '\'' (ESC_SEQ | ~('\\'|'\''|'\n'|'\r'))* '\'' + | '"""' (ESC_SEQ | ~('\\'))*? '"""' + | '\'\'\'' (ESC_SEQ | ~('\\'))*? '\'\'\'' + | RAW '"' ~('"'|'\n'|'\r')* '"' + | RAW '\'' ~('\''|'\n'|'\r')* '\'' + | RAW '"""' .*? '"""' + | RAW '\'\'\'' .*? '\'\'\'' + ; + +BYTES : ('b' | 'B') STRING; + +IDENTIFIER : (LETTER | '_') ( LETTER | DIGIT | '_')*; +ESC_IDENTIFIER : '`' (LETTER | DIGIT | '_' | '.' | '-' | '/' | ' ')+ '`'; \ No newline at end of file diff --git a/vendor/github.com/google/cel-go/parser/gen/CEL.interp b/vendor/github.com/google/cel-go/parser/gen/CEL.interp new file mode 100644 index 0000000000..e085bab574 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/CEL.interp @@ -0,0 +1,102 @@ +token literal names: +null +'==' +'!=' +'in' +'<' +'<=' +'>=' +'>' +'&&' +'||' +'[' +']' +'{' +'}' +'(' +')' +'.' +',' +'-' +'!' +'?' +':' +'+' +'*' +'/' +'%' +'true' +'false' +'null' +null +null +null +null +null +null +null +null +null + +token symbolic names: +null +EQUALS +NOT_EQUALS +IN +LESS +LESS_EQUALS +GREATER_EQUALS +GREATER +LOGICAL_AND +LOGICAL_OR +LBRACKET +RPRACKET +LBRACE +RBRACE +LPAREN +RPAREN +DOT +COMMA +MINUS +EXCLAM +QUESTIONMARK +COLON +PLUS +STAR +SLASH +PERCENT +CEL_TRUE +CEL_FALSE +NUL +WHITESPACE +COMMENT +NUM_FLOAT +NUM_INT +NUM_UINT +STRING +BYTES +IDENTIFIER +ESC_IDENTIFIER + +rule names: +start +expr +conditionalOr +conditionalAnd +relation +calc +unary +member +primary +exprList +listInit +fieldInitializerList +optField +mapInitializerList +escapeIdent +optExpr +literal + + +atn: +[4, 1, 37, 259, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, 2, 16, 7, 16, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 44, 8, 1, 1, 2, 1, 2, 1, 2, 5, 2, 49, 8, 2, 10, 2, 12, 2, 52, 9, 2, 1, 3, 1, 3, 1, 3, 5, 3, 57, 8, 3, 10, 3, 12, 3, 60, 9, 3, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 5, 4, 68, 8, 4, 10, 4, 12, 4, 71, 9, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 5, 5, 82, 8, 5, 10, 5, 12, 5, 85, 9, 5, 1, 6, 1, 6, 4, 6, 89, 8, 6, 11, 6, 12, 6, 90, 1, 6, 1, 6, 4, 6, 95, 8, 6, 11, 6, 12, 6, 96, 1, 6, 3, 6, 100, 8, 6, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 3, 7, 108, 8, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 3, 7, 116, 8, 7, 1, 7, 1, 7, 1, 7, 1, 7, 3, 7, 122, 8, 7, 1, 7, 1, 7, 1, 7, 5, 7, 127, 8, 7, 10, 7, 12, 7, 130, 9, 7, 1, 8, 3, 8, 133, 8, 8, 1, 8, 1, 8, 3, 8, 137, 8, 8, 1, 8, 1, 8, 1, 8, 3, 8, 142, 8, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 3, 8, 151, 8, 8, 1, 8, 3, 8, 154, 8, 8, 1, 8, 1, 8, 1, 8, 3, 8, 159, 8, 8, 1, 8, 3, 8, 162, 8, 8, 1, 8, 1, 8, 3, 8, 166, 8, 8, 1, 8, 1, 8, 1, 8, 5, 8, 171, 8, 8, 10, 8, 12, 8, 174, 9, 8, 1, 8, 1, 8, 3, 8, 178, 8, 8, 1, 8, 3, 8, 181, 8, 8, 1, 8, 1, 8, 3, 8, 185, 8, 8, 1, 9, 1, 9, 1, 9, 5, 9, 190, 8, 9, 10, 9, 12, 9, 193, 9, 9, 1, 10, 1, 10, 1, 10, 5, 10, 198, 8, 10, 10, 10, 12, 10, 201, 9, 10, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 5, 11, 211, 8, 11, 10, 11, 12, 11, 214, 9, 11, 1, 12, 3, 12, 217, 8, 12, 1, 12, 1, 12, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 5, 13, 229, 8, 13, 10, 13, 12, 13, 232, 9, 13, 1, 14, 1, 14, 3, 14, 236, 8, 14, 1, 15, 3, 15, 239, 8, 15, 1, 15, 1, 15, 1, 16, 3, 16, 244, 8, 16, 1, 16, 1, 16, 1, 16, 3, 16, 249, 8, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 3, 16, 257, 8, 16, 1, 16, 0, 3, 8, 10, 14, 17, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 0, 3, 1, 0, 1, 7, 1, 0, 23, 25, 2, 0, 18, 18, 22, 22, 290, 0, 34, 1, 0, 0, 0, 2, 37, 1, 0, 0, 0, 4, 45, 1, 0, 0, 0, 6, 53, 1, 0, 0, 0, 8, 61, 1, 0, 0, 0, 10, 72, 1, 0, 0, 0, 12, 99, 1, 0, 0, 0, 14, 101, 1, 0, 0, 0, 16, 184, 1, 0, 0, 0, 18, 186, 1, 0, 0, 0, 20, 194, 1, 0, 0, 0, 22, 202, 1, 0, 0, 0, 24, 216, 1, 0, 0, 0, 26, 220, 1, 0, 0, 0, 28, 235, 1, 0, 0, 0, 30, 238, 1, 0, 0, 0, 32, 256, 1, 0, 0, 0, 34, 35, 3, 2, 1, 0, 35, 36, 5, 0, 0, 1, 36, 1, 1, 0, 0, 0, 37, 43, 3, 4, 2, 0, 38, 39, 5, 20, 0, 0, 39, 40, 3, 4, 2, 0, 40, 41, 5, 21, 0, 0, 41, 42, 3, 2, 1, 0, 42, 44, 1, 0, 0, 0, 43, 38, 1, 0, 0, 0, 43, 44, 1, 0, 0, 0, 44, 3, 1, 0, 0, 0, 45, 50, 3, 6, 3, 0, 46, 47, 5, 9, 0, 0, 47, 49, 3, 6, 3, 0, 48, 46, 1, 0, 0, 0, 49, 52, 1, 0, 0, 0, 50, 48, 1, 0, 0, 0, 50, 51, 1, 0, 0, 0, 51, 5, 1, 0, 0, 0, 52, 50, 1, 0, 0, 0, 53, 58, 3, 8, 4, 0, 54, 55, 5, 8, 0, 0, 55, 57, 3, 8, 4, 0, 56, 54, 1, 0, 0, 0, 57, 60, 1, 0, 0, 0, 58, 56, 1, 0, 0, 0, 58, 59, 1, 0, 0, 0, 59, 7, 1, 0, 0, 0, 60, 58, 1, 0, 0, 0, 61, 62, 6, 4, -1, 0, 62, 63, 3, 10, 5, 0, 63, 69, 1, 0, 0, 0, 64, 65, 10, 1, 0, 0, 65, 66, 7, 0, 0, 0, 66, 68, 3, 8, 4, 2, 67, 64, 1, 0, 0, 0, 68, 71, 1, 0, 0, 0, 69, 67, 1, 0, 0, 0, 69, 70, 1, 0, 0, 0, 70, 9, 1, 0, 0, 0, 71, 69, 1, 0, 0, 0, 72, 73, 6, 5, -1, 0, 73, 74, 3, 12, 6, 0, 74, 83, 1, 0, 0, 0, 75, 76, 10, 2, 0, 0, 76, 77, 7, 1, 0, 0, 77, 82, 3, 10, 5, 3, 78, 79, 10, 1, 0, 0, 79, 80, 7, 2, 0, 0, 80, 82, 3, 10, 5, 2, 81, 75, 1, 0, 0, 0, 81, 78, 1, 0, 0, 0, 82, 85, 1, 0, 0, 0, 83, 81, 1, 0, 0, 0, 83, 84, 1, 0, 0, 0, 84, 11, 1, 0, 0, 0, 85, 83, 1, 0, 0, 0, 86, 100, 3, 14, 7, 0, 87, 89, 5, 19, 0, 0, 88, 87, 1, 0, 0, 0, 89, 90, 1, 0, 0, 0, 90, 88, 1, 0, 0, 0, 90, 91, 1, 0, 0, 0, 91, 92, 1, 0, 0, 0, 92, 100, 3, 14, 7, 0, 93, 95, 5, 18, 0, 0, 94, 93, 1, 0, 0, 0, 95, 96, 1, 0, 0, 0, 96, 94, 1, 0, 0, 0, 96, 97, 1, 0, 0, 0, 97, 98, 1, 0, 0, 0, 98, 100, 3, 14, 7, 0, 99, 86, 1, 0, 0, 0, 99, 88, 1, 0, 0, 0, 99, 94, 1, 0, 0, 0, 100, 13, 1, 0, 0, 0, 101, 102, 6, 7, -1, 0, 102, 103, 3, 16, 8, 0, 103, 128, 1, 0, 0, 0, 104, 105, 10, 3, 0, 0, 105, 107, 5, 16, 0, 0, 106, 108, 5, 20, 0, 0, 107, 106, 1, 0, 0, 0, 107, 108, 1, 0, 0, 0, 108, 109, 1, 0, 0, 0, 109, 127, 3, 28, 14, 0, 110, 111, 10, 2, 0, 0, 111, 112, 5, 16, 0, 0, 112, 113, 5, 36, 0, 0, 113, 115, 5, 14, 0, 0, 114, 116, 3, 18, 9, 0, 115, 114, 1, 0, 0, 0, 115, 116, 1, 0, 0, 0, 116, 117, 1, 0, 0, 0, 117, 127, 5, 15, 0, 0, 118, 119, 10, 1, 0, 0, 119, 121, 5, 10, 0, 0, 120, 122, 5, 20, 0, 0, 121, 120, 1, 0, 0, 0, 121, 122, 1, 0, 0, 0, 122, 123, 1, 0, 0, 0, 123, 124, 3, 2, 1, 0, 124, 125, 5, 11, 0, 0, 125, 127, 1, 0, 0, 0, 126, 104, 1, 0, 0, 0, 126, 110, 1, 0, 0, 0, 126, 118, 1, 0, 0, 0, 127, 130, 1, 0, 0, 0, 128, 126, 1, 0, 0, 0, 128, 129, 1, 0, 0, 0, 129, 15, 1, 0, 0, 0, 130, 128, 1, 0, 0, 0, 131, 133, 5, 16, 0, 0, 132, 131, 1, 0, 0, 0, 132, 133, 1, 0, 0, 0, 133, 134, 1, 0, 0, 0, 134, 185, 5, 36, 0, 0, 135, 137, 5, 16, 0, 0, 136, 135, 1, 0, 0, 0, 136, 137, 1, 0, 0, 0, 137, 138, 1, 0, 0, 0, 138, 139, 5, 36, 0, 0, 139, 141, 5, 14, 0, 0, 140, 142, 3, 18, 9, 0, 141, 140, 1, 0, 0, 0, 141, 142, 1, 0, 0, 0, 142, 143, 1, 0, 0, 0, 143, 185, 5, 15, 0, 0, 144, 145, 5, 14, 0, 0, 145, 146, 3, 2, 1, 0, 146, 147, 5, 15, 0, 0, 147, 185, 1, 0, 0, 0, 148, 150, 5, 10, 0, 0, 149, 151, 3, 20, 10, 0, 150, 149, 1, 0, 0, 0, 150, 151, 1, 0, 0, 0, 151, 153, 1, 0, 0, 0, 152, 154, 5, 17, 0, 0, 153, 152, 1, 0, 0, 0, 153, 154, 1, 0, 0, 0, 154, 155, 1, 0, 0, 0, 155, 185, 5, 11, 0, 0, 156, 158, 5, 12, 0, 0, 157, 159, 3, 26, 13, 0, 158, 157, 1, 0, 0, 0, 158, 159, 1, 0, 0, 0, 159, 161, 1, 0, 0, 0, 160, 162, 5, 17, 0, 0, 161, 160, 1, 0, 0, 0, 161, 162, 1, 0, 0, 0, 162, 163, 1, 0, 0, 0, 163, 185, 5, 13, 0, 0, 164, 166, 5, 16, 0, 0, 165, 164, 1, 0, 0, 0, 165, 166, 1, 0, 0, 0, 166, 167, 1, 0, 0, 0, 167, 172, 5, 36, 0, 0, 168, 169, 5, 16, 0, 0, 169, 171, 5, 36, 0, 0, 170, 168, 1, 0, 0, 0, 171, 174, 1, 0, 0, 0, 172, 170, 1, 0, 0, 0, 172, 173, 1, 0, 0, 0, 173, 175, 1, 0, 0, 0, 174, 172, 1, 0, 0, 0, 175, 177, 5, 12, 0, 0, 176, 178, 3, 22, 11, 0, 177, 176, 1, 0, 0, 0, 177, 178, 1, 0, 0, 0, 178, 180, 1, 0, 0, 0, 179, 181, 5, 17, 0, 0, 180, 179, 1, 0, 0, 0, 180, 181, 1, 0, 0, 0, 181, 182, 1, 0, 0, 0, 182, 185, 5, 13, 0, 0, 183, 185, 3, 32, 16, 0, 184, 132, 1, 0, 0, 0, 184, 136, 1, 0, 0, 0, 184, 144, 1, 0, 0, 0, 184, 148, 1, 0, 0, 0, 184, 156, 1, 0, 0, 0, 184, 165, 1, 0, 0, 0, 184, 183, 1, 0, 0, 0, 185, 17, 1, 0, 0, 0, 186, 191, 3, 2, 1, 0, 187, 188, 5, 17, 0, 0, 188, 190, 3, 2, 1, 0, 189, 187, 1, 0, 0, 0, 190, 193, 1, 0, 0, 0, 191, 189, 1, 0, 0, 0, 191, 192, 1, 0, 0, 0, 192, 19, 1, 0, 0, 0, 193, 191, 1, 0, 0, 0, 194, 199, 3, 30, 15, 0, 195, 196, 5, 17, 0, 0, 196, 198, 3, 30, 15, 0, 197, 195, 1, 0, 0, 0, 198, 201, 1, 0, 0, 0, 199, 197, 1, 0, 0, 0, 199, 200, 1, 0, 0, 0, 200, 21, 1, 0, 0, 0, 201, 199, 1, 0, 0, 0, 202, 203, 3, 24, 12, 0, 203, 204, 5, 21, 0, 0, 204, 212, 3, 2, 1, 0, 205, 206, 5, 17, 0, 0, 206, 207, 3, 24, 12, 0, 207, 208, 5, 21, 0, 0, 208, 209, 3, 2, 1, 0, 209, 211, 1, 0, 0, 0, 210, 205, 1, 0, 0, 0, 211, 214, 1, 0, 0, 0, 212, 210, 1, 0, 0, 0, 212, 213, 1, 0, 0, 0, 213, 23, 1, 0, 0, 0, 214, 212, 1, 0, 0, 0, 215, 217, 5, 20, 0, 0, 216, 215, 1, 0, 0, 0, 216, 217, 1, 0, 0, 0, 217, 218, 1, 0, 0, 0, 218, 219, 3, 28, 14, 0, 219, 25, 1, 0, 0, 0, 220, 221, 3, 30, 15, 0, 221, 222, 5, 21, 0, 0, 222, 230, 3, 2, 1, 0, 223, 224, 5, 17, 0, 0, 224, 225, 3, 30, 15, 0, 225, 226, 5, 21, 0, 0, 226, 227, 3, 2, 1, 0, 227, 229, 1, 0, 0, 0, 228, 223, 1, 0, 0, 0, 229, 232, 1, 0, 0, 0, 230, 228, 1, 0, 0, 0, 230, 231, 1, 0, 0, 0, 231, 27, 1, 0, 0, 0, 232, 230, 1, 0, 0, 0, 233, 236, 5, 36, 0, 0, 234, 236, 5, 37, 0, 0, 235, 233, 1, 0, 0, 0, 235, 234, 1, 0, 0, 0, 236, 29, 1, 0, 0, 0, 237, 239, 5, 20, 0, 0, 238, 237, 1, 0, 0, 0, 238, 239, 1, 0, 0, 0, 239, 240, 1, 0, 0, 0, 240, 241, 3, 2, 1, 0, 241, 31, 1, 0, 0, 0, 242, 244, 5, 18, 0, 0, 243, 242, 1, 0, 0, 0, 243, 244, 1, 0, 0, 0, 244, 245, 1, 0, 0, 0, 245, 257, 5, 32, 0, 0, 246, 257, 5, 33, 0, 0, 247, 249, 5, 18, 0, 0, 248, 247, 1, 0, 0, 0, 248, 249, 1, 0, 0, 0, 249, 250, 1, 0, 0, 0, 250, 257, 5, 31, 0, 0, 251, 257, 5, 34, 0, 0, 252, 257, 5, 35, 0, 0, 253, 257, 5, 26, 0, 0, 254, 257, 5, 27, 0, 0, 255, 257, 5, 28, 0, 0, 256, 243, 1, 0, 0, 0, 256, 246, 1, 0, 0, 0, 256, 248, 1, 0, 0, 0, 256, 251, 1, 0, 0, 0, 256, 252, 1, 0, 0, 0, 256, 253, 1, 0, 0, 0, 256, 254, 1, 0, 0, 0, 256, 255, 1, 0, 0, 0, 257, 33, 1, 0, 0, 0, 36, 43, 50, 58, 69, 81, 83, 90, 96, 99, 107, 115, 121, 126, 128, 132, 136, 141, 150, 153, 158, 161, 165, 172, 177, 180, 184, 191, 199, 212, 216, 230, 235, 238, 243, 248, 256] \ No newline at end of file diff --git a/vendor/github.com/google/cel-go/parser/gen/CEL.tokens b/vendor/github.com/google/cel-go/parser/gen/CEL.tokens new file mode 100644 index 0000000000..aa1f5eee6f --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/CEL.tokens @@ -0,0 +1,65 @@ +EQUALS=1 +NOT_EQUALS=2 +IN=3 +LESS=4 +LESS_EQUALS=5 +GREATER_EQUALS=6 +GREATER=7 +LOGICAL_AND=8 +LOGICAL_OR=9 +LBRACKET=10 +RPRACKET=11 +LBRACE=12 +RBRACE=13 +LPAREN=14 +RPAREN=15 +DOT=16 +COMMA=17 +MINUS=18 +EXCLAM=19 +QUESTIONMARK=20 +COLON=21 +PLUS=22 +STAR=23 +SLASH=24 +PERCENT=25 +CEL_TRUE=26 +CEL_FALSE=27 +NUL=28 +WHITESPACE=29 +COMMENT=30 +NUM_FLOAT=31 +NUM_INT=32 +NUM_UINT=33 +STRING=34 +BYTES=35 +IDENTIFIER=36 +ESC_IDENTIFIER=37 +'=='=1 +'!='=2 +'in'=3 +'<'=4 +'<='=5 +'>='=6 +'>'=7 +'&&'=8 +'||'=9 +'['=10 +']'=11 +'{'=12 +'}'=13 +'('=14 +')'=15 +'.'=16 +','=17 +'-'=18 +'!'=19 +'?'=20 +':'=21 +'+'=22 +'*'=23 +'/'=24 +'%'=25 +'true'=26 +'false'=27 +'null'=28 diff --git a/vendor/github.com/google/cel-go/parser/gen/CELLexer.interp b/vendor/github.com/google/cel-go/parser/gen/CELLexer.interp new file mode 100644 index 0000000000..162d52188c --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/CELLexer.interp @@ -0,0 +1,139 @@ +token literal names: +null +'==' +'!=' +'in' +'<' +'<=' +'>=' +'>' +'&&' +'||' +'[' +']' +'{' +'}' +'(' +')' +'.' +',' +'-' +'!' +'?' +':' +'+' +'*' +'/' +'%' +'true' +'false' +'null' +null +null +null +null +null +null +null +null +null + +token symbolic names: +null +EQUALS +NOT_EQUALS +IN +LESS +LESS_EQUALS +GREATER_EQUALS +GREATER +LOGICAL_AND +LOGICAL_OR +LBRACKET +RPRACKET +LBRACE +RBRACE +LPAREN +RPAREN +DOT +COMMA +MINUS +EXCLAM +QUESTIONMARK +COLON +PLUS +STAR +SLASH +PERCENT +CEL_TRUE +CEL_FALSE +NUL +WHITESPACE +COMMENT +NUM_FLOAT +NUM_INT +NUM_UINT +STRING +BYTES +IDENTIFIER +ESC_IDENTIFIER + +rule names: +EQUALS +NOT_EQUALS +IN +LESS +LESS_EQUALS +GREATER_EQUALS +GREATER +LOGICAL_AND +LOGICAL_OR +LBRACKET +RPRACKET +LBRACE +RBRACE +LPAREN +RPAREN +DOT +COMMA +MINUS +EXCLAM +QUESTIONMARK +COLON +PLUS +STAR +SLASH +PERCENT +CEL_TRUE +CEL_FALSE +NUL +BACKSLASH +LETTER +DIGIT +EXPONENT +HEXDIGIT +RAW +ESC_SEQ +ESC_CHAR_SEQ +ESC_OCT_SEQ +ESC_BYTE_SEQ +ESC_UNI_SEQ +WHITESPACE +COMMENT +NUM_FLOAT +NUM_INT +NUM_UINT +STRING +BYTES +IDENTIFIER +ESC_IDENTIFIER + +channel names: +DEFAULT_TOKEN_CHANNEL +HIDDEN + +mode names: +DEFAULT_MODE + +atn: +[4, 0, 37, 435, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, 2, 16, 7, 16, 2, 17, 7, 17, 2, 18, 7, 18, 2, 19, 7, 19, 2, 20, 7, 20, 2, 21, 7, 21, 2, 22, 7, 22, 2, 23, 7, 23, 2, 24, 7, 24, 2, 25, 7, 25, 2, 26, 7, 26, 2, 27, 7, 27, 2, 28, 7, 28, 2, 29, 7, 29, 2, 30, 7, 30, 2, 31, 7, 31, 2, 32, 7, 32, 2, 33, 7, 33, 2, 34, 7, 34, 2, 35, 7, 35, 2, 36, 7, 36, 2, 37, 7, 37, 2, 38, 7, 38, 2, 39, 7, 39, 2, 40, 7, 40, 2, 41, 7, 41, 2, 42, 7, 42, 2, 43, 7, 43, 2, 44, 7, 44, 2, 45, 7, 45, 2, 46, 7, 46, 2, 47, 7, 47, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 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369, 373, 5, 39, 0, 0, 370, 372, 8, 14, 0, 0, 371, 370, 1, 0, 0, 0, 372, 375, 1, 0, 0, 0, 373, 371, 1, 0, 0, 0, 373, 374, 1, 0, 0, 0, 374, 376, 1, 0, 0, 0, 375, 373, 1, 0, 0, 0, 376, 377, 5, 39, 0, 0, 377, 409, 1, 0, 0, 0, 378, 379, 3, 67, 33, 0, 379, 380, 5, 34, 0, 0, 380, 381, 5, 34, 0, 0, 381, 382, 5, 34, 0, 0, 382, 386, 1, 0, 0, 0, 383, 385, 9, 0, 0, 0, 384, 383, 1, 0, 0, 0, 385, 388, 1, 0, 0, 0, 386, 387, 1, 0, 0, 0, 386, 384, 1, 0, 0, 0, 387, 389, 1, 0, 0, 0, 388, 386, 1, 0, 0, 0, 389, 390, 5, 34, 0, 0, 390, 391, 5, 34, 0, 0, 391, 392, 5, 34, 0, 0, 392, 409, 1, 0, 0, 0, 393, 394, 3, 67, 33, 0, 394, 395, 5, 39, 0, 0, 395, 396, 5, 39, 0, 0, 396, 397, 5, 39, 0, 0, 397, 401, 1, 0, 0, 0, 398, 400, 9, 0, 0, 0, 399, 398, 1, 0, 0, 0, 400, 403, 1, 0, 0, 0, 401, 402, 1, 0, 0, 0, 401, 399, 1, 0, 0, 0, 402, 404, 1, 0, 0, 0, 403, 401, 1, 0, 0, 0, 404, 405, 5, 39, 0, 0, 405, 406, 5, 39, 0, 0, 406, 407, 5, 39, 0, 0, 407, 409, 1, 0, 0, 0, 408, 312, 1, 0, 0, 0, 408, 321, 1, 0, 0, 0, 408, 330, 1, 0, 0, 0, 408, 344, 1, 0, 0, 0, 408, 358, 1, 0, 0, 0, 408, 368, 1, 0, 0, 0, 408, 378, 1, 0, 0, 0, 408, 393, 1, 0, 0, 0, 409, 90, 1, 0, 0, 0, 410, 411, 7, 15, 0, 0, 411, 412, 3, 89, 44, 0, 412, 92, 1, 0, 0, 0, 413, 416, 3, 59, 29, 0, 414, 416, 5, 95, 0, 0, 415, 413, 1, 0, 0, 0, 415, 414, 1, 0, 0, 0, 416, 422, 1, 0, 0, 0, 417, 421, 3, 59, 29, 0, 418, 421, 3, 61, 30, 0, 419, 421, 5, 95, 0, 0, 420, 417, 1, 0, 0, 0, 420, 418, 1, 0, 0, 0, 420, 419, 1, 0, 0, 0, 421, 424, 1, 0, 0, 0, 422, 420, 1, 0, 0, 0, 422, 423, 1, 0, 0, 0, 423, 94, 1, 0, 0, 0, 424, 422, 1, 0, 0, 0, 425, 429, 5, 96, 0, 0, 426, 430, 3, 59, 29, 0, 427, 430, 3, 61, 30, 0, 428, 430, 7, 16, 0, 0, 429, 426, 1, 0, 0, 0, 429, 427, 1, 0, 0, 0, 429, 428, 1, 0, 0, 0, 430, 431, 1, 0, 0, 0, 431, 429, 1, 0, 0, 0, 431, 432, 1, 0, 0, 0, 432, 433, 1, 0, 0, 0, 433, 434, 5, 96, 0, 0, 434, 96, 1, 0, 0, 0, 38, 0, 178, 183, 193, 226, 231, 241, 249, 255, 258, 263, 271, 274, 276, 281, 289, 291, 296, 306, 310, 315, 317, 324, 326, 336, 338, 350, 352, 363, 373, 386, 401, 408, 415, 420, 422, 429, 431, 1, 0, 1, 0] \ No newline at end of file diff --git a/vendor/github.com/google/cel-go/parser/gen/CELLexer.tokens b/vendor/github.com/google/cel-go/parser/gen/CELLexer.tokens new file mode 100644 index 0000000000..aa1f5eee6f --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/CELLexer.tokens @@ -0,0 +1,65 @@ +EQUALS=1 +NOT_EQUALS=2 +IN=3 +LESS=4 +LESS_EQUALS=5 +GREATER_EQUALS=6 +GREATER=7 +LOGICAL_AND=8 +LOGICAL_OR=9 +LBRACKET=10 +RPRACKET=11 +LBRACE=12 +RBRACE=13 +LPAREN=14 +RPAREN=15 +DOT=16 +COMMA=17 +MINUS=18 +EXCLAM=19 +QUESTIONMARK=20 +COLON=21 +PLUS=22 +STAR=23 +SLASH=24 +PERCENT=25 +CEL_TRUE=26 +CEL_FALSE=27 +NUL=28 +WHITESPACE=29 +COMMENT=30 +NUM_FLOAT=31 +NUM_INT=32 +NUM_UINT=33 +STRING=34 +BYTES=35 +IDENTIFIER=36 +ESC_IDENTIFIER=37 +'=='=1 +'!='=2 +'in'=3 +'<'=4 +'<='=5 +'>='=6 +'>'=7 +'&&'=8 +'||'=9 +'['=10 +']'=11 +'{'=12 +'}'=13 +'('=14 +')'=15 +'.'=16 +','=17 +'-'=18 +'!'=19 +'?'=20 +':'=21 +'+'=22 +'*'=23 +'/'=24 +'%'=25 +'true'=26 +'false'=27 +'null'=28 diff --git a/vendor/github.com/google/cel-go/parser/gen/cel_base_listener.go b/vendor/github.com/google/cel-go/parser/gen/cel_base_listener.go new file mode 100644 index 0000000000..514f2082fe --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/cel_base_listener.go @@ -0,0 +1,237 @@ +// Code generated from /usr/local/google/home/jdtatum/github/cel-go/parser/gen/CEL.g4 by ANTLR 4.13.1. DO NOT EDIT. + +package gen // CEL +import "github.com/antlr4-go/antlr/v4" + +// BaseCELListener is a complete listener for a parse tree produced by CELParser. +type BaseCELListener struct{} + +var _ CELListener = &BaseCELListener{} + +// VisitTerminal is called when a terminal node is visited. +func (s *BaseCELListener) VisitTerminal(node antlr.TerminalNode) {} + +// VisitErrorNode is called when an error node is visited. +func (s *BaseCELListener) VisitErrorNode(node antlr.ErrorNode) {} + +// EnterEveryRule is called when any rule is entered. +func (s *BaseCELListener) EnterEveryRule(ctx antlr.ParserRuleContext) {} + +// ExitEveryRule is called when any rule is exited. +func (s *BaseCELListener) ExitEveryRule(ctx antlr.ParserRuleContext) {} + +// EnterStart is called when production start is entered. +func (s *BaseCELListener) EnterStart(ctx *StartContext) {} + +// ExitStart is called when production start is exited. +func (s *BaseCELListener) ExitStart(ctx *StartContext) {} + +// EnterExpr is called when production expr is entered. +func (s *BaseCELListener) EnterExpr(ctx *ExprContext) {} + +// ExitExpr is called when production expr is exited. +func (s *BaseCELListener) ExitExpr(ctx *ExprContext) {} + +// EnterConditionalOr is called when production conditionalOr is entered. +func (s *BaseCELListener) EnterConditionalOr(ctx *ConditionalOrContext) {} + +// ExitConditionalOr is called when production conditionalOr is exited. +func (s *BaseCELListener) ExitConditionalOr(ctx *ConditionalOrContext) {} + +// EnterConditionalAnd is called when production conditionalAnd is entered. +func (s *BaseCELListener) EnterConditionalAnd(ctx *ConditionalAndContext) {} + +// ExitConditionalAnd is called when production conditionalAnd is exited. +func (s *BaseCELListener) ExitConditionalAnd(ctx *ConditionalAndContext) {} + +// EnterRelation is called when production relation is entered. +func (s *BaseCELListener) EnterRelation(ctx *RelationContext) {} + +// ExitRelation is called when production relation is exited. +func (s *BaseCELListener) ExitRelation(ctx *RelationContext) {} + +// EnterCalc is called when production calc is entered. +func (s *BaseCELListener) EnterCalc(ctx *CalcContext) {} + +// ExitCalc is called when production calc is exited. +func (s *BaseCELListener) ExitCalc(ctx *CalcContext) {} + +// EnterMemberExpr is called when production MemberExpr is entered. +func (s *BaseCELListener) EnterMemberExpr(ctx *MemberExprContext) {} + +// ExitMemberExpr is called when production MemberExpr is exited. +func (s *BaseCELListener) ExitMemberExpr(ctx *MemberExprContext) {} + +// EnterLogicalNot is called when production LogicalNot is entered. +func (s *BaseCELListener) EnterLogicalNot(ctx *LogicalNotContext) {} + +// ExitLogicalNot is called when production LogicalNot is exited. +func (s *BaseCELListener) ExitLogicalNot(ctx *LogicalNotContext) {} + +// EnterNegate is called when production Negate is entered. +func (s *BaseCELListener) EnterNegate(ctx *NegateContext) {} + +// ExitNegate is called when production Negate is exited. +func (s *BaseCELListener) ExitNegate(ctx *NegateContext) {} + +// EnterMemberCall is called when production MemberCall is entered. +func (s *BaseCELListener) EnterMemberCall(ctx *MemberCallContext) {} + +// ExitMemberCall is called when production MemberCall is exited. +func (s *BaseCELListener) ExitMemberCall(ctx *MemberCallContext) {} + +// EnterSelect is called when production Select is entered. +func (s *BaseCELListener) EnterSelect(ctx *SelectContext) {} + +// ExitSelect is called when production Select is exited. +func (s *BaseCELListener) ExitSelect(ctx *SelectContext) {} + +// EnterPrimaryExpr is called when production PrimaryExpr is entered. +func (s *BaseCELListener) EnterPrimaryExpr(ctx *PrimaryExprContext) {} + +// ExitPrimaryExpr is called when production PrimaryExpr is exited. +func (s *BaseCELListener) ExitPrimaryExpr(ctx *PrimaryExprContext) {} + +// EnterIndex is called when production Index is entered. +func (s *BaseCELListener) EnterIndex(ctx *IndexContext) {} + +// ExitIndex is called when production Index is exited. +func (s *BaseCELListener) ExitIndex(ctx *IndexContext) {} + +// EnterIdent is called when production Ident is entered. +func (s *BaseCELListener) EnterIdent(ctx *IdentContext) {} + +// ExitIdent is called when production Ident is exited. +func (s *BaseCELListener) ExitIdent(ctx *IdentContext) {} + +// EnterGlobalCall is called when production GlobalCall is entered. +func (s *BaseCELListener) EnterGlobalCall(ctx *GlobalCallContext) {} + +// ExitGlobalCall is called when production GlobalCall is exited. +func (s *BaseCELListener) ExitGlobalCall(ctx *GlobalCallContext) {} + +// EnterNested is called when production Nested is entered. +func (s *BaseCELListener) EnterNested(ctx *NestedContext) {} + +// ExitNested is called when production Nested is exited. +func (s *BaseCELListener) ExitNested(ctx *NestedContext) {} + +// EnterCreateList is called when production CreateList is entered. +func (s *BaseCELListener) EnterCreateList(ctx *CreateListContext) {} + +// ExitCreateList is called when production CreateList is exited. +func (s *BaseCELListener) ExitCreateList(ctx *CreateListContext) {} + +// EnterCreateStruct is called when production CreateStruct is entered. +func (s *BaseCELListener) EnterCreateStruct(ctx *CreateStructContext) {} + +// ExitCreateStruct is called when production CreateStruct is exited. +func (s *BaseCELListener) ExitCreateStruct(ctx *CreateStructContext) {} + +// EnterCreateMessage is called when production CreateMessage is entered. +func (s *BaseCELListener) EnterCreateMessage(ctx *CreateMessageContext) {} + +// ExitCreateMessage is called when production CreateMessage is exited. +func (s *BaseCELListener) ExitCreateMessage(ctx *CreateMessageContext) {} + +// EnterConstantLiteral is called when production ConstantLiteral is entered. +func (s *BaseCELListener) EnterConstantLiteral(ctx *ConstantLiteralContext) {} + +// ExitConstantLiteral is called when production ConstantLiteral is exited. +func (s *BaseCELListener) ExitConstantLiteral(ctx *ConstantLiteralContext) {} + +// EnterExprList is called when production exprList is entered. +func (s *BaseCELListener) EnterExprList(ctx *ExprListContext) {} + +// ExitExprList is called when production exprList is exited. +func (s *BaseCELListener) ExitExprList(ctx *ExprListContext) {} + +// EnterListInit is called when production listInit is entered. +func (s *BaseCELListener) EnterListInit(ctx *ListInitContext) {} + +// ExitListInit is called when production listInit is exited. +func (s *BaseCELListener) ExitListInit(ctx *ListInitContext) {} + +// EnterFieldInitializerList is called when production fieldInitializerList is entered. +func (s *BaseCELListener) EnterFieldInitializerList(ctx *FieldInitializerListContext) {} + +// ExitFieldInitializerList is called when production fieldInitializerList is exited. +func (s *BaseCELListener) ExitFieldInitializerList(ctx *FieldInitializerListContext) {} + +// EnterOptField is called when production optField is entered. +func (s *BaseCELListener) EnterOptField(ctx *OptFieldContext) {} + +// ExitOptField is called when production optField is exited. +func (s *BaseCELListener) ExitOptField(ctx *OptFieldContext) {} + +// EnterMapInitializerList is called when production mapInitializerList is entered. +func (s *BaseCELListener) EnterMapInitializerList(ctx *MapInitializerListContext) {} + +// ExitMapInitializerList is called when production mapInitializerList is exited. +func (s *BaseCELListener) ExitMapInitializerList(ctx *MapInitializerListContext) {} + +// EnterSimpleIdentifier is called when production SimpleIdentifier is entered. +func (s *BaseCELListener) EnterSimpleIdentifier(ctx *SimpleIdentifierContext) {} + +// ExitSimpleIdentifier is called when production SimpleIdentifier is exited. +func (s *BaseCELListener) ExitSimpleIdentifier(ctx *SimpleIdentifierContext) {} + +// EnterEscapedIdentifier is called when production EscapedIdentifier is entered. +func (s *BaseCELListener) EnterEscapedIdentifier(ctx *EscapedIdentifierContext) {} + +// ExitEscapedIdentifier is called when production EscapedIdentifier is exited. +func (s *BaseCELListener) ExitEscapedIdentifier(ctx *EscapedIdentifierContext) {} + +// EnterOptExpr is called when production optExpr is entered. +func (s *BaseCELListener) EnterOptExpr(ctx *OptExprContext) {} + +// ExitOptExpr is called when production optExpr is exited. +func (s *BaseCELListener) ExitOptExpr(ctx *OptExprContext) {} + +// EnterInt is called when production Int is entered. +func (s *BaseCELListener) EnterInt(ctx *IntContext) {} + +// ExitInt is called when production Int is exited. +func (s *BaseCELListener) ExitInt(ctx *IntContext) {} + +// EnterUint is called when production Uint is entered. +func (s *BaseCELListener) EnterUint(ctx *UintContext) {} + +// ExitUint is called when production Uint is exited. +func (s *BaseCELListener) ExitUint(ctx *UintContext) {} + +// EnterDouble is called when production Double is entered. +func (s *BaseCELListener) EnterDouble(ctx *DoubleContext) {} + +// ExitDouble is called when production Double is exited. +func (s *BaseCELListener) ExitDouble(ctx *DoubleContext) {} + +// EnterString is called when production String is entered. +func (s *BaseCELListener) EnterString(ctx *StringContext) {} + +// ExitString is called when production String is exited. +func (s *BaseCELListener) ExitString(ctx *StringContext) {} + +// EnterBytes is called when production Bytes is entered. +func (s *BaseCELListener) EnterBytes(ctx *BytesContext) {} + +// ExitBytes is called when production Bytes is exited. +func (s *BaseCELListener) ExitBytes(ctx *BytesContext) {} + +// EnterBoolTrue is called when production BoolTrue is entered. +func (s *BaseCELListener) EnterBoolTrue(ctx *BoolTrueContext) {} + +// ExitBoolTrue is called when production BoolTrue is exited. +func (s *BaseCELListener) ExitBoolTrue(ctx *BoolTrueContext) {} + +// EnterBoolFalse is called when production BoolFalse is entered. +func (s *BaseCELListener) EnterBoolFalse(ctx *BoolFalseContext) {} + +// ExitBoolFalse is called when production BoolFalse is exited. +func (s *BaseCELListener) ExitBoolFalse(ctx *BoolFalseContext) {} + +// EnterNull is called when production Null is entered. +func (s *BaseCELListener) EnterNull(ctx *NullContext) {} + +// ExitNull is called when production Null is exited. +func (s *BaseCELListener) ExitNull(ctx *NullContext) {} diff --git a/vendor/github.com/google/cel-go/parser/gen/cel_base_visitor.go b/vendor/github.com/google/cel-go/parser/gen/cel_base_visitor.go new file mode 100644 index 0000000000..8a12cb65e3 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/cel_base_visitor.go @@ -0,0 +1,152 @@ +// Code generated from /usr/local/google/home/jdtatum/github/cel-go/parser/gen/CEL.g4 by ANTLR 4.13.1. DO NOT EDIT. + +package gen // CEL +import "github.com/antlr4-go/antlr/v4" + +type BaseCELVisitor struct { + *antlr.BaseParseTreeVisitor +} + +func (v *BaseCELVisitor) VisitStart(ctx *StartContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitExpr(ctx *ExprContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitConditionalOr(ctx *ConditionalOrContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitConditionalAnd(ctx *ConditionalAndContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitRelation(ctx *RelationContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitCalc(ctx *CalcContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitMemberExpr(ctx *MemberExprContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitLogicalNot(ctx *LogicalNotContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitNegate(ctx *NegateContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitMemberCall(ctx *MemberCallContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitSelect(ctx *SelectContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitPrimaryExpr(ctx *PrimaryExprContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitIndex(ctx *IndexContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitIdent(ctx *IdentContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitGlobalCall(ctx *GlobalCallContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitNested(ctx *NestedContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitCreateList(ctx *CreateListContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitCreateStruct(ctx *CreateStructContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitCreateMessage(ctx *CreateMessageContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitConstantLiteral(ctx *ConstantLiteralContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitExprList(ctx *ExprListContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitListInit(ctx *ListInitContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitFieldInitializerList(ctx *FieldInitializerListContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitOptField(ctx *OptFieldContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitMapInitializerList(ctx *MapInitializerListContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitSimpleIdentifier(ctx *SimpleIdentifierContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitEscapedIdentifier(ctx *EscapedIdentifierContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitOptExpr(ctx *OptExprContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitInt(ctx *IntContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitUint(ctx *UintContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitDouble(ctx *DoubleContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitString(ctx *StringContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitBytes(ctx *BytesContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitBoolTrue(ctx *BoolTrueContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitBoolFalse(ctx *BoolFalseContext) interface{} { + return v.VisitChildren(ctx) +} + +func (v *BaseCELVisitor) VisitNull(ctx *NullContext) interface{} { + return v.VisitChildren(ctx) +} diff --git a/vendor/github.com/google/cel-go/parser/gen/cel_lexer.go b/vendor/github.com/google/cel-go/parser/gen/cel_lexer.go new file mode 100644 index 0000000000..896562f5fb --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/cel_lexer.go @@ -0,0 +1,351 @@ +// Code generated from /usr/local/google/home/jdtatum/github/cel-go/parser/gen/CEL.g4 by ANTLR 4.13.1. DO NOT EDIT. + +package gen + +import ( + "fmt" + "github.com/antlr4-go/antlr/v4" + "sync" + "unicode" +) + +// Suppress unused import error +var _ = fmt.Printf +var _ = sync.Once{} +var _ = unicode.IsLetter + +type CELLexer struct { + *antlr.BaseLexer + channelNames []string + modeNames []string + // TODO: EOF string +} + +var CELLexerLexerStaticData struct { + once sync.Once + serializedATN []int32 + ChannelNames []string + ModeNames []string + LiteralNames []string + SymbolicNames []string + RuleNames []string + PredictionContextCache *antlr.PredictionContextCache + atn *antlr.ATN + decisionToDFA []*antlr.DFA +} + +func cellexerLexerInit() { + staticData := &CELLexerLexerStaticData + staticData.ChannelNames = []string{ + "DEFAULT_TOKEN_CHANNEL", "HIDDEN", + } + staticData.ModeNames = []string{ + "DEFAULT_MODE", + } + staticData.LiteralNames = []string{ + "", "'=='", "'!='", "'in'", "'<'", "'<='", "'>='", "'>'", "'&&'", "'||'", + "'['", "']'", "'{'", "'}'", "'('", "')'", "'.'", "','", "'-'", "'!'", + "'?'", "':'", "'+'", "'*'", "'/'", "'%'", "'true'", "'false'", "'null'", + } + staticData.SymbolicNames = []string{ + "", "EQUALS", "NOT_EQUALS", "IN", "LESS", "LESS_EQUALS", "GREATER_EQUALS", + "GREATER", "LOGICAL_AND", "LOGICAL_OR", "LBRACKET", "RPRACKET", "LBRACE", + "RBRACE", "LPAREN", "RPAREN", "DOT", "COMMA", "MINUS", "EXCLAM", "QUESTIONMARK", + "COLON", "PLUS", "STAR", "SLASH", "PERCENT", "CEL_TRUE", "CEL_FALSE", + "NUL", "WHITESPACE", "COMMENT", "NUM_FLOAT", "NUM_INT", "NUM_UINT", + "STRING", "BYTES", "IDENTIFIER", "ESC_IDENTIFIER", + } + staticData.RuleNames = []string{ + "EQUALS", "NOT_EQUALS", "IN", "LESS", "LESS_EQUALS", "GREATER_EQUALS", + "GREATER", "LOGICAL_AND", "LOGICAL_OR", "LBRACKET", "RPRACKET", "LBRACE", + "RBRACE", "LPAREN", "RPAREN", "DOT", "COMMA", "MINUS", "EXCLAM", "QUESTIONMARK", + "COLON", "PLUS", "STAR", "SLASH", "PERCENT", "CEL_TRUE", "CEL_FALSE", + "NUL", "BACKSLASH", "LETTER", "DIGIT", "EXPONENT", "HEXDIGIT", "RAW", + "ESC_SEQ", "ESC_CHAR_SEQ", "ESC_OCT_SEQ", "ESC_BYTE_SEQ", "ESC_UNI_SEQ", + "WHITESPACE", "COMMENT", "NUM_FLOAT", "NUM_INT", "NUM_UINT", "STRING", + "BYTES", "IDENTIFIER", "ESC_IDENTIFIER", + } + staticData.PredictionContextCache = antlr.NewPredictionContextCache() + staticData.serializedATN = []int32{ + 4, 0, 37, 435, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, + 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, + 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, + 7, 15, 2, 16, 7, 16, 2, 17, 7, 17, 2, 18, 7, 18, 2, 19, 7, 19, 2, 20, 7, + 20, 2, 21, 7, 21, 2, 22, 7, 22, 2, 23, 7, 23, 2, 24, 7, 24, 2, 25, 7, 25, + 2, 26, 7, 26, 2, 27, 7, 27, 2, 28, 7, 28, 2, 29, 7, 29, 2, 30, 7, 30, 2, + 31, 7, 31, 2, 32, 7, 32, 2, 33, 7, 33, 2, 34, 7, 34, 2, 35, 7, 35, 2, 36, + 7, 36, 2, 37, 7, 37, 2, 38, 7, 38, 2, 39, 7, 39, 2, 40, 7, 40, 2, 41, 7, + 41, 2, 42, 7, 42, 2, 43, 7, 43, 2, 44, 7, 44, 2, 45, 7, 45, 2, 46, 7, 46, + 2, 47, 7, 47, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, + 3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 1, 6, 1, 6, 1, 7, 1, 7, 1, + 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 9, 1, 10, 1, 10, 1, 11, 1, 11, 1, 12, 1, + 12, 1, 13, 1, 13, 1, 14, 1, 14, 1, 15, 1, 15, 1, 16, 1, 16, 1, 17, 1, 17, + 1, 18, 1, 18, 1, 19, 1, 19, 1, 20, 1, 20, 1, 21, 1, 21, 1, 22, 1, 22, 1, + 23, 1, 23, 1, 24, 1, 24, 1, 25, 1, 25, 1, 25, 1, 25, 1, 25, 1, 26, 1, 26, + 1, 26, 1, 26, 1, 26, 1, 26, 1, 27, 1, 27, 1, 27, 1, 27, 1, 27, 1, 28, 1, + 28, 1, 29, 1, 29, 1, 30, 1, 30, 1, 31, 1, 31, 3, 31, 179, 8, 31, 1, 31, + 4, 31, 182, 8, 31, 11, 31, 12, 31, 183, 1, 32, 1, 32, 1, 33, 1, 33, 1, + 34, 1, 34, 1, 34, 1, 34, 3, 34, 194, 8, 34, 1, 35, 1, 35, 1, 35, 1, 36, + 1, 36, 1, 36, 1, 36, 1, 36, 1, 37, 1, 37, 1, 37, 1, 37, 1, 37, 1, 38, 1, + 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, + 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 1, 38, 3, 38, 227, 8, 38, 1, 39, 4, + 39, 230, 8, 39, 11, 39, 12, 39, 231, 1, 39, 1, 39, 1, 40, 1, 40, 1, 40, + 1, 40, 5, 40, 240, 8, 40, 10, 40, 12, 40, 243, 9, 40, 1, 40, 1, 40, 1, + 41, 4, 41, 248, 8, 41, 11, 41, 12, 41, 249, 1, 41, 1, 41, 4, 41, 254, 8, + 41, 11, 41, 12, 41, 255, 1, 41, 3, 41, 259, 8, 41, 1, 41, 4, 41, 262, 8, + 41, 11, 41, 12, 41, 263, 1, 41, 1, 41, 1, 41, 1, 41, 4, 41, 270, 8, 41, + 11, 41, 12, 41, 271, 1, 41, 3, 41, 275, 8, 41, 3, 41, 277, 8, 41, 1, 42, + 4, 42, 280, 8, 42, 11, 42, 12, 42, 281, 1, 42, 1, 42, 1, 42, 1, 42, 4, + 42, 288, 8, 42, 11, 42, 12, 42, 289, 3, 42, 292, 8, 42, 1, 43, 4, 43, 295, + 8, 43, 11, 43, 12, 43, 296, 1, 43, 1, 43, 1, 43, 1, 43, 1, 43, 1, 43, 4, + 43, 305, 8, 43, 11, 43, 12, 43, 306, 1, 43, 1, 43, 3, 43, 311, 8, 43, 1, + 44, 1, 44, 1, 44, 5, 44, 316, 8, 44, 10, 44, 12, 44, 319, 9, 44, 1, 44, + 1, 44, 1, 44, 1, 44, 5, 44, 325, 8, 44, 10, 44, 12, 44, 328, 9, 44, 1, + 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 5, 44, 337, 8, 44, 10, 44, + 12, 44, 340, 9, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, + 44, 1, 44, 5, 44, 351, 8, 44, 10, 44, 12, 44, 354, 9, 44, 1, 44, 1, 44, + 1, 44, 1, 44, 1, 44, 1, 44, 5, 44, 362, 8, 44, 10, 44, 12, 44, 365, 9, + 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 5, 44, 372, 8, 44, 10, 44, 12, 44, + 375, 9, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 5, + 44, 385, 8, 44, 10, 44, 12, 44, 388, 9, 44, 1, 44, 1, 44, 1, 44, 1, 44, + 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 1, 44, 5, 44, 400, 8, 44, 10, 44, 12, + 44, 403, 9, 44, 1, 44, 1, 44, 1, 44, 1, 44, 3, 44, 409, 8, 44, 1, 45, 1, + 45, 1, 45, 1, 46, 1, 46, 3, 46, 416, 8, 46, 1, 46, 1, 46, 1, 46, 5, 46, + 421, 8, 46, 10, 46, 12, 46, 424, 9, 46, 1, 47, 1, 47, 1, 47, 1, 47, 4, + 47, 430, 8, 47, 11, 47, 12, 47, 431, 1, 47, 1, 47, 4, 338, 352, 386, 401, + 0, 48, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 10, + 21, 11, 23, 12, 25, 13, 27, 14, 29, 15, 31, 16, 33, 17, 35, 18, 37, 19, + 39, 20, 41, 21, 43, 22, 45, 23, 47, 24, 49, 25, 51, 26, 53, 27, 55, 28, + 57, 0, 59, 0, 61, 0, 63, 0, 65, 0, 67, 0, 69, 0, 71, 0, 73, 0, 75, 0, 77, + 0, 79, 29, 81, 30, 83, 31, 85, 32, 87, 33, 89, 34, 91, 35, 93, 36, 95, + 37, 1, 0, 17, 2, 0, 65, 90, 97, 122, 2, 0, 69, 69, 101, 101, 2, 0, 43, + 43, 45, 45, 3, 0, 48, 57, 65, 70, 97, 102, 2, 0, 82, 82, 114, 114, 10, + 0, 34, 34, 39, 39, 63, 63, 92, 92, 96, 98, 102, 102, 110, 110, 114, 114, + 116, 116, 118, 118, 2, 0, 88, 88, 120, 120, 3, 0, 9, 10, 12, 13, 32, 32, + 1, 0, 10, 10, 2, 0, 85, 85, 117, 117, 4, 0, 10, 10, 13, 13, 34, 34, 92, + 92, 4, 0, 10, 10, 13, 13, 39, 39, 92, 92, 1, 0, 92, 92, 3, 0, 10, 10, 13, + 13, 34, 34, 3, 0, 10, 10, 13, 13, 39, 39, 2, 0, 66, 66, 98, 98, 3, 0, 32, + 32, 45, 47, 95, 95, 471, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, + 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, + 0, 0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 21, + 1, 0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 27, 1, 0, 0, 0, 0, + 29, 1, 0, 0, 0, 0, 31, 1, 0, 0, 0, 0, 33, 1, 0, 0, 0, 0, 35, 1, 0, 0, 0, + 0, 37, 1, 0, 0, 0, 0, 39, 1, 0, 0, 0, 0, 41, 1, 0, 0, 0, 0, 43, 1, 0, 0, + 0, 0, 45, 1, 0, 0, 0, 0, 47, 1, 0, 0, 0, 0, 49, 1, 0, 0, 0, 0, 51, 1, 0, + 0, 0, 0, 53, 1, 0, 0, 0, 0, 55, 1, 0, 0, 0, 0, 79, 1, 0, 0, 0, 0, 81, 1, + 0, 0, 0, 0, 83, 1, 0, 0, 0, 0, 85, 1, 0, 0, 0, 0, 87, 1, 0, 0, 0, 0, 89, + 1, 0, 0, 0, 0, 91, 1, 0, 0, 0, 0, 93, 1, 0, 0, 0, 0, 95, 1, 0, 0, 0, 1, + 97, 1, 0, 0, 0, 3, 100, 1, 0, 0, 0, 5, 103, 1, 0, 0, 0, 7, 106, 1, 0, 0, + 0, 9, 108, 1, 0, 0, 0, 11, 111, 1, 0, 0, 0, 13, 114, 1, 0, 0, 0, 15, 116, + 1, 0, 0, 0, 17, 119, 1, 0, 0, 0, 19, 122, 1, 0, 0, 0, 21, 124, 1, 0, 0, + 0, 23, 126, 1, 0, 0, 0, 25, 128, 1, 0, 0, 0, 27, 130, 1, 0, 0, 0, 29, 132, + 1, 0, 0, 0, 31, 134, 1, 0, 0, 0, 33, 136, 1, 0, 0, 0, 35, 138, 1, 0, 0, + 0, 37, 140, 1, 0, 0, 0, 39, 142, 1, 0, 0, 0, 41, 144, 1, 0, 0, 0, 43, 146, + 1, 0, 0, 0, 45, 148, 1, 0, 0, 0, 47, 150, 1, 0, 0, 0, 49, 152, 1, 0, 0, + 0, 51, 154, 1, 0, 0, 0, 53, 159, 1, 0, 0, 0, 55, 165, 1, 0, 0, 0, 57, 170, + 1, 0, 0, 0, 59, 172, 1, 0, 0, 0, 61, 174, 1, 0, 0, 0, 63, 176, 1, 0, 0, + 0, 65, 185, 1, 0, 0, 0, 67, 187, 1, 0, 0, 0, 69, 193, 1, 0, 0, 0, 71, 195, + 1, 0, 0, 0, 73, 198, 1, 0, 0, 0, 75, 203, 1, 0, 0, 0, 77, 226, 1, 0, 0, + 0, 79, 229, 1, 0, 0, 0, 81, 235, 1, 0, 0, 0, 83, 276, 1, 0, 0, 0, 85, 291, + 1, 0, 0, 0, 87, 310, 1, 0, 0, 0, 89, 408, 1, 0, 0, 0, 91, 410, 1, 0, 0, + 0, 93, 415, 1, 0, 0, 0, 95, 425, 1, 0, 0, 0, 97, 98, 5, 61, 0, 0, 98, 99, + 5, 61, 0, 0, 99, 2, 1, 0, 0, 0, 100, 101, 5, 33, 0, 0, 101, 102, 5, 61, + 0, 0, 102, 4, 1, 0, 0, 0, 103, 104, 5, 105, 0, 0, 104, 105, 5, 110, 0, + 0, 105, 6, 1, 0, 0, 0, 106, 107, 5, 60, 0, 0, 107, 8, 1, 0, 0, 0, 108, + 109, 5, 60, 0, 0, 109, 110, 5, 61, 0, 0, 110, 10, 1, 0, 0, 0, 111, 112, + 5, 62, 0, 0, 112, 113, 5, 61, 0, 0, 113, 12, 1, 0, 0, 0, 114, 115, 5, 62, + 0, 0, 115, 14, 1, 0, 0, 0, 116, 117, 5, 38, 0, 0, 117, 118, 5, 38, 0, 0, + 118, 16, 1, 0, 0, 0, 119, 120, 5, 124, 0, 0, 120, 121, 5, 124, 0, 0, 121, + 18, 1, 0, 0, 0, 122, 123, 5, 91, 0, 0, 123, 20, 1, 0, 0, 0, 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0, 0, 0, 281, 279, 1, 0, 0, 0, + 281, 282, 1, 0, 0, 0, 282, 292, 1, 0, 0, 0, 283, 284, 5, 48, 0, 0, 284, + 285, 5, 120, 0, 0, 285, 287, 1, 0, 0, 0, 286, 288, 3, 65, 32, 0, 287, 286, + 1, 0, 0, 0, 288, 289, 1, 0, 0, 0, 289, 287, 1, 0, 0, 0, 289, 290, 1, 0, + 0, 0, 290, 292, 1, 0, 0, 0, 291, 279, 1, 0, 0, 0, 291, 283, 1, 0, 0, 0, + 292, 86, 1, 0, 0, 0, 293, 295, 3, 61, 30, 0, 294, 293, 1, 0, 0, 0, 295, + 296, 1, 0, 0, 0, 296, 294, 1, 0, 0, 0, 296, 297, 1, 0, 0, 0, 297, 298, + 1, 0, 0, 0, 298, 299, 7, 9, 0, 0, 299, 311, 1, 0, 0, 0, 300, 301, 5, 48, + 0, 0, 301, 302, 5, 120, 0, 0, 302, 304, 1, 0, 0, 0, 303, 305, 3, 65, 32, + 0, 304, 303, 1, 0, 0, 0, 305, 306, 1, 0, 0, 0, 306, 304, 1, 0, 0, 0, 306, + 307, 1, 0, 0, 0, 307, 308, 1, 0, 0, 0, 308, 309, 7, 9, 0, 0, 309, 311, + 1, 0, 0, 0, 310, 294, 1, 0, 0, 0, 310, 300, 1, 0, 0, 0, 311, 88, 1, 0, + 0, 0, 312, 317, 5, 34, 0, 0, 313, 316, 3, 69, 34, 0, 314, 316, 8, 10, 0, + 0, 315, 313, 1, 0, 0, 0, 315, 314, 1, 0, 0, 0, 316, 319, 1, 0, 0, 0, 317, + 315, 1, 0, 0, 0, 317, 318, 1, 0, 0, 0, 318, 320, 1, 0, 0, 0, 319, 317, + 1, 0, 0, 0, 320, 409, 5, 34, 0, 0, 321, 326, 5, 39, 0, 0, 322, 325, 3, + 69, 34, 0, 323, 325, 8, 11, 0, 0, 324, 322, 1, 0, 0, 0, 324, 323, 1, 0, + 0, 0, 325, 328, 1, 0, 0, 0, 326, 324, 1, 0, 0, 0, 326, 327, 1, 0, 0, 0, + 327, 329, 1, 0, 0, 0, 328, 326, 1, 0, 0, 0, 329, 409, 5, 39, 0, 0, 330, + 331, 5, 34, 0, 0, 331, 332, 5, 34, 0, 0, 332, 333, 5, 34, 0, 0, 333, 338, + 1, 0, 0, 0, 334, 337, 3, 69, 34, 0, 335, 337, 8, 12, 0, 0, 336, 334, 1, + 0, 0, 0, 336, 335, 1, 0, 0, 0, 337, 340, 1, 0, 0, 0, 338, 339, 1, 0, 0, + 0, 338, 336, 1, 0, 0, 0, 339, 341, 1, 0, 0, 0, 340, 338, 1, 0, 0, 0, 341, + 342, 5, 34, 0, 0, 342, 343, 5, 34, 0, 0, 343, 409, 5, 34, 0, 0, 344, 345, + 5, 39, 0, 0, 345, 346, 5, 39, 0, 0, 346, 347, 5, 39, 0, 0, 347, 352, 1, + 0, 0, 0, 348, 351, 3, 69, 34, 0, 349, 351, 8, 12, 0, 0, 350, 348, 1, 0, + 0, 0, 350, 349, 1, 0, 0, 0, 351, 354, 1, 0, 0, 0, 352, 353, 1, 0, 0, 0, + 352, 350, 1, 0, 0, 0, 353, 355, 1, 0, 0, 0, 354, 352, 1, 0, 0, 0, 355, + 356, 5, 39, 0, 0, 356, 357, 5, 39, 0, 0, 357, 409, 5, 39, 0, 0, 358, 359, + 3, 67, 33, 0, 359, 363, 5, 34, 0, 0, 360, 362, 8, 13, 0, 0, 361, 360, 1, + 0, 0, 0, 362, 365, 1, 0, 0, 0, 363, 361, 1, 0, 0, 0, 363, 364, 1, 0, 0, + 0, 364, 366, 1, 0, 0, 0, 365, 363, 1, 0, 0, 0, 366, 367, 5, 34, 0, 0, 367, + 409, 1, 0, 0, 0, 368, 369, 3, 67, 33, 0, 369, 373, 5, 39, 0, 0, 370, 372, + 8, 14, 0, 0, 371, 370, 1, 0, 0, 0, 372, 375, 1, 0, 0, 0, 373, 371, 1, 0, + 0, 0, 373, 374, 1, 0, 0, 0, 374, 376, 1, 0, 0, 0, 375, 373, 1, 0, 0, 0, + 376, 377, 5, 39, 0, 0, 377, 409, 1, 0, 0, 0, 378, 379, 3, 67, 33, 0, 379, + 380, 5, 34, 0, 0, 380, 381, 5, 34, 0, 0, 381, 382, 5, 34, 0, 0, 382, 386, + 1, 0, 0, 0, 383, 385, 9, 0, 0, 0, 384, 383, 1, 0, 0, 0, 385, 388, 1, 0, + 0, 0, 386, 387, 1, 0, 0, 0, 386, 384, 1, 0, 0, 0, 387, 389, 1, 0, 0, 0, + 388, 386, 1, 0, 0, 0, 389, 390, 5, 34, 0, 0, 390, 391, 5, 34, 0, 0, 391, + 392, 5, 34, 0, 0, 392, 409, 1, 0, 0, 0, 393, 394, 3, 67, 33, 0, 394, 395, + 5, 39, 0, 0, 395, 396, 5, 39, 0, 0, 396, 397, 5, 39, 0, 0, 397, 401, 1, + 0, 0, 0, 398, 400, 9, 0, 0, 0, 399, 398, 1, 0, 0, 0, 400, 403, 1, 0, 0, + 0, 401, 402, 1, 0, 0, 0, 401, 399, 1, 0, 0, 0, 402, 404, 1, 0, 0, 0, 403, + 401, 1, 0, 0, 0, 404, 405, 5, 39, 0, 0, 405, 406, 5, 39, 0, 0, 406, 407, + 5, 39, 0, 0, 407, 409, 1, 0, 0, 0, 408, 312, 1, 0, 0, 0, 408, 321, 1, 0, + 0, 0, 408, 330, 1, 0, 0, 0, 408, 344, 1, 0, 0, 0, 408, 358, 1, 0, 0, 0, + 408, 368, 1, 0, 0, 0, 408, 378, 1, 0, 0, 0, 408, 393, 1, 0, 0, 0, 409, + 90, 1, 0, 0, 0, 410, 411, 7, 15, 0, 0, 411, 412, 3, 89, 44, 0, 412, 92, + 1, 0, 0, 0, 413, 416, 3, 59, 29, 0, 414, 416, 5, 95, 0, 0, 415, 413, 1, + 0, 0, 0, 415, 414, 1, 0, 0, 0, 416, 422, 1, 0, 0, 0, 417, 421, 3, 59, 29, + 0, 418, 421, 3, 61, 30, 0, 419, 421, 5, 95, 0, 0, 420, 417, 1, 0, 0, 0, + 420, 418, 1, 0, 0, 0, 420, 419, 1, 0, 0, 0, 421, 424, 1, 0, 0, 0, 422, + 420, 1, 0, 0, 0, 422, 423, 1, 0, 0, 0, 423, 94, 1, 0, 0, 0, 424, 422, 1, + 0, 0, 0, 425, 429, 5, 96, 0, 0, 426, 430, 3, 59, 29, 0, 427, 430, 3, 61, + 30, 0, 428, 430, 7, 16, 0, 0, 429, 426, 1, 0, 0, 0, 429, 427, 1, 0, 0, + 0, 429, 428, 1, 0, 0, 0, 430, 431, 1, 0, 0, 0, 431, 429, 1, 0, 0, 0, 431, + 432, 1, 0, 0, 0, 432, 433, 1, 0, 0, 0, 433, 434, 5, 96, 0, 0, 434, 96, + 1, 0, 0, 0, 38, 0, 178, 183, 193, 226, 231, 241, 249, 255, 258, 263, 271, + 274, 276, 281, 289, 291, 296, 306, 310, 315, 317, 324, 326, 336, 338, 350, + 352, 363, 373, 386, 401, 408, 415, 420, 422, 429, 431, 1, 0, 1, 0, + } + deserializer := antlr.NewATNDeserializer(nil) + staticData.atn = deserializer.Deserialize(staticData.serializedATN) + atn := staticData.atn + staticData.decisionToDFA = make([]*antlr.DFA, len(atn.DecisionToState)) + decisionToDFA := staticData.decisionToDFA + for index, state := range atn.DecisionToState { + decisionToDFA[index] = antlr.NewDFA(state, index) + } +} + +// CELLexerInit initializes any static state used to implement CELLexer. By default the +// static state used to implement the lexer is lazily initialized during the first call to +// NewCELLexer(). You can call this function if you wish to initialize the static state ahead +// of time. +func CELLexerInit() { + staticData := &CELLexerLexerStaticData + staticData.once.Do(cellexerLexerInit) +} + +// NewCELLexer produces a new lexer instance for the optional input antlr.CharStream. +func NewCELLexer(input antlr.CharStream) *CELLexer { + CELLexerInit() + l := new(CELLexer) + l.BaseLexer = antlr.NewBaseLexer(input) + staticData := &CELLexerLexerStaticData + l.Interpreter = antlr.NewLexerATNSimulator(l, staticData.atn, staticData.decisionToDFA, staticData.PredictionContextCache) + l.channelNames = staticData.ChannelNames + l.modeNames = staticData.ModeNames + l.RuleNames = staticData.RuleNames + l.LiteralNames = staticData.LiteralNames + l.SymbolicNames = staticData.SymbolicNames + l.GrammarFileName = "CEL.g4" + // TODO: l.EOF = antlr.TokenEOF + + return l +} + +// CELLexer tokens. +const ( + CELLexerEQUALS = 1 + CELLexerNOT_EQUALS = 2 + CELLexerIN = 3 + CELLexerLESS = 4 + CELLexerLESS_EQUALS = 5 + CELLexerGREATER_EQUALS = 6 + CELLexerGREATER = 7 + CELLexerLOGICAL_AND = 8 + CELLexerLOGICAL_OR = 9 + CELLexerLBRACKET = 10 + CELLexerRPRACKET = 11 + CELLexerLBRACE = 12 + CELLexerRBRACE = 13 + CELLexerLPAREN = 14 + CELLexerRPAREN = 15 + CELLexerDOT = 16 + CELLexerCOMMA = 17 + CELLexerMINUS = 18 + CELLexerEXCLAM = 19 + CELLexerQUESTIONMARK = 20 + CELLexerCOLON = 21 + CELLexerPLUS = 22 + CELLexerSTAR = 23 + CELLexerSLASH = 24 + CELLexerPERCENT = 25 + CELLexerCEL_TRUE = 26 + CELLexerCEL_FALSE = 27 + CELLexerNUL = 28 + CELLexerWHITESPACE = 29 + CELLexerCOMMENT = 30 + CELLexerNUM_FLOAT = 31 + CELLexerNUM_INT = 32 + CELLexerNUM_UINT = 33 + CELLexerSTRING = 34 + CELLexerBYTES = 35 + CELLexerIDENTIFIER = 36 + CELLexerESC_IDENTIFIER = 37 +) diff --git a/vendor/github.com/google/cel-go/parser/gen/cel_listener.go b/vendor/github.com/google/cel-go/parser/gen/cel_listener.go new file mode 100644 index 0000000000..da477c4b7f --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/cel_listener.go @@ -0,0 +1,225 @@ +// Code generated from /usr/local/google/home/jdtatum/github/cel-go/parser/gen/CEL.g4 by ANTLR 4.13.1. DO NOT EDIT. + +package gen // CEL +import "github.com/antlr4-go/antlr/v4" + +// CELListener is a complete listener for a parse tree produced by CELParser. +type CELListener interface { + antlr.ParseTreeListener + + // EnterStart is called when entering the start production. + EnterStart(c *StartContext) + + // EnterExpr is called when entering the expr production. + EnterExpr(c *ExprContext) + + // EnterConditionalOr is called when entering the conditionalOr production. + EnterConditionalOr(c *ConditionalOrContext) + + // EnterConditionalAnd is called when entering the conditionalAnd production. + EnterConditionalAnd(c *ConditionalAndContext) + + // EnterRelation is called when entering the relation production. + EnterRelation(c *RelationContext) + + // EnterCalc is called when entering the calc production. + EnterCalc(c *CalcContext) + + // EnterMemberExpr is called when entering the MemberExpr production. + EnterMemberExpr(c *MemberExprContext) + + // EnterLogicalNot is called when entering the LogicalNot production. + EnterLogicalNot(c *LogicalNotContext) + + // EnterNegate is called when entering the Negate production. + EnterNegate(c *NegateContext) + + // EnterMemberCall is called when entering the MemberCall production. + EnterMemberCall(c *MemberCallContext) + + // EnterSelect is called when entering the Select production. + EnterSelect(c *SelectContext) + + // EnterPrimaryExpr is called when entering the PrimaryExpr production. + EnterPrimaryExpr(c *PrimaryExprContext) + + // EnterIndex is called when entering the Index production. + EnterIndex(c *IndexContext) + + // EnterIdent is called when entering the Ident production. + EnterIdent(c *IdentContext) + + // EnterGlobalCall is called when entering the GlobalCall production. + EnterGlobalCall(c *GlobalCallContext) + + // EnterNested is called when entering the Nested production. + EnterNested(c *NestedContext) + + // EnterCreateList is called when entering the CreateList production. + EnterCreateList(c *CreateListContext) + + // EnterCreateStruct is called when entering the CreateStruct production. + EnterCreateStruct(c *CreateStructContext) + + // EnterCreateMessage is called when entering the CreateMessage production. + EnterCreateMessage(c *CreateMessageContext) + + // EnterConstantLiteral is called when entering the ConstantLiteral production. + EnterConstantLiteral(c *ConstantLiteralContext) + + // EnterExprList is called when entering the exprList production. + EnterExprList(c *ExprListContext) + + // EnterListInit is called when entering the listInit production. + EnterListInit(c *ListInitContext) + + // EnterFieldInitializerList is called when entering the fieldInitializerList production. + EnterFieldInitializerList(c *FieldInitializerListContext) + + // EnterOptField is called when entering the optField production. + EnterOptField(c *OptFieldContext) + + // EnterMapInitializerList is called when entering the mapInitializerList production. + EnterMapInitializerList(c *MapInitializerListContext) + + // EnterSimpleIdentifier is called when entering the SimpleIdentifier production. + EnterSimpleIdentifier(c *SimpleIdentifierContext) + + // EnterEscapedIdentifier is called when entering the EscapedIdentifier production. + EnterEscapedIdentifier(c *EscapedIdentifierContext) + + // EnterOptExpr is called when entering the optExpr production. + EnterOptExpr(c *OptExprContext) + + // EnterInt is called when entering the Int production. + EnterInt(c *IntContext) + + // EnterUint is called when entering the Uint production. + EnterUint(c *UintContext) + + // EnterDouble is called when entering the Double production. + EnterDouble(c *DoubleContext) + + // EnterString is called when entering the String production. + EnterString(c *StringContext) + + // EnterBytes is called when entering the Bytes production. + EnterBytes(c *BytesContext) + + // EnterBoolTrue is called when entering the BoolTrue production. + EnterBoolTrue(c *BoolTrueContext) + + // EnterBoolFalse is called when entering the BoolFalse production. + EnterBoolFalse(c *BoolFalseContext) + + // EnterNull is called when entering the Null production. + EnterNull(c *NullContext) + + // ExitStart is called when exiting the start production. + ExitStart(c *StartContext) + + // ExitExpr is called when exiting the expr production. + ExitExpr(c *ExprContext) + + // ExitConditionalOr is called when exiting the conditionalOr production. + ExitConditionalOr(c *ConditionalOrContext) + + // ExitConditionalAnd is called when exiting the conditionalAnd production. + ExitConditionalAnd(c *ConditionalAndContext) + + // ExitRelation is called when exiting the relation production. + ExitRelation(c *RelationContext) + + // ExitCalc is called when exiting the calc production. + ExitCalc(c *CalcContext) + + // ExitMemberExpr is called when exiting the MemberExpr production. + ExitMemberExpr(c *MemberExprContext) + + // ExitLogicalNot is called when exiting the LogicalNot production. + ExitLogicalNot(c *LogicalNotContext) + + // ExitNegate is called when exiting the Negate production. + ExitNegate(c *NegateContext) + + // ExitMemberCall is called when exiting the MemberCall production. + ExitMemberCall(c *MemberCallContext) + + // ExitSelect is called when exiting the Select production. + ExitSelect(c *SelectContext) + + // ExitPrimaryExpr is called when exiting the PrimaryExpr production. + ExitPrimaryExpr(c *PrimaryExprContext) + + // ExitIndex is called when exiting the Index production. + ExitIndex(c *IndexContext) + + // ExitIdent is called when exiting the Ident production. + ExitIdent(c *IdentContext) + + // ExitGlobalCall is called when exiting the GlobalCall production. + ExitGlobalCall(c *GlobalCallContext) + + // ExitNested is called when exiting the Nested production. + ExitNested(c *NestedContext) + + // ExitCreateList is called when exiting the CreateList production. + ExitCreateList(c *CreateListContext) + + // ExitCreateStruct is called when exiting the CreateStruct production. + ExitCreateStruct(c *CreateStructContext) + + // ExitCreateMessage is called when exiting the CreateMessage production. + ExitCreateMessage(c *CreateMessageContext) + + // ExitConstantLiteral is called when exiting the ConstantLiteral production. + ExitConstantLiteral(c *ConstantLiteralContext) + + // ExitExprList is called when exiting the exprList production. + ExitExprList(c *ExprListContext) + + // ExitListInit is called when exiting the listInit production. + ExitListInit(c *ListInitContext) + + // ExitFieldInitializerList is called when exiting the fieldInitializerList production. + ExitFieldInitializerList(c *FieldInitializerListContext) + + // ExitOptField is called when exiting the optField production. + ExitOptField(c *OptFieldContext) + + // ExitMapInitializerList is called when exiting the mapInitializerList production. + ExitMapInitializerList(c *MapInitializerListContext) + + // ExitSimpleIdentifier is called when exiting the SimpleIdentifier production. + ExitSimpleIdentifier(c *SimpleIdentifierContext) + + // ExitEscapedIdentifier is called when exiting the EscapedIdentifier production. + ExitEscapedIdentifier(c *EscapedIdentifierContext) + + // ExitOptExpr is called when exiting the optExpr production. + ExitOptExpr(c *OptExprContext) + + // ExitInt is called when exiting the Int production. + ExitInt(c *IntContext) + + // ExitUint is called when exiting the Uint production. + ExitUint(c *UintContext) + + // ExitDouble is called when exiting the Double production. + ExitDouble(c *DoubleContext) + + // ExitString is called when exiting the String production. + ExitString(c *StringContext) + + // ExitBytes is called when exiting the Bytes production. + ExitBytes(c *BytesContext) + + // ExitBoolTrue is called when exiting the BoolTrue production. + ExitBoolTrue(c *BoolTrueContext) + + // ExitBoolFalse is called when exiting the BoolFalse production. + ExitBoolFalse(c *BoolFalseContext) + + // ExitNull is called when exiting the Null production. + ExitNull(c *NullContext) +} diff --git a/vendor/github.com/google/cel-go/parser/gen/cel_parser.go b/vendor/github.com/google/cel-go/parser/gen/cel_parser.go new file mode 100644 index 0000000000..38693df58d --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/cel_parser.go @@ -0,0 +1,6197 @@ +// Code generated from /usr/local/google/home/jdtatum/github/cel-go/parser/gen/CEL.g4 by ANTLR 4.13.1. DO NOT EDIT. + +package gen // CEL +import ( + "fmt" + "strconv" + "sync" + + "github.com/antlr4-go/antlr/v4" +) + +// Suppress unused import errors +var _ = fmt.Printf +var _ = strconv.Itoa +var _ = sync.Once{} + +type CELParser struct { + *antlr.BaseParser +} + +var CELParserStaticData struct { + once sync.Once + serializedATN []int32 + LiteralNames []string + SymbolicNames []string + RuleNames []string + PredictionContextCache *antlr.PredictionContextCache + atn *antlr.ATN + decisionToDFA []*antlr.DFA +} + +func celParserInit() { + staticData := &CELParserStaticData + staticData.LiteralNames = []string{ + "", "'=='", "'!='", "'in'", "'<'", "'<='", "'>='", "'>'", "'&&'", "'||'", + "'['", "']'", "'{'", "'}'", "'('", "')'", "'.'", "','", "'-'", "'!'", + "'?'", "':'", "'+'", "'*'", "'/'", "'%'", "'true'", "'false'", "'null'", + } + staticData.SymbolicNames = []string{ + "", "EQUALS", "NOT_EQUALS", "IN", "LESS", "LESS_EQUALS", "GREATER_EQUALS", + "GREATER", "LOGICAL_AND", "LOGICAL_OR", "LBRACKET", "RPRACKET", "LBRACE", + "RBRACE", "LPAREN", "RPAREN", "DOT", "COMMA", "MINUS", "EXCLAM", "QUESTIONMARK", + "COLON", "PLUS", "STAR", "SLASH", "PERCENT", "CEL_TRUE", "CEL_FALSE", + "NUL", "WHITESPACE", "COMMENT", "NUM_FLOAT", "NUM_INT", "NUM_UINT", + "STRING", "BYTES", "IDENTIFIER", "ESC_IDENTIFIER", + } + staticData.RuleNames = []string{ + "start", "expr", "conditionalOr", "conditionalAnd", "relation", "calc", + "unary", "member", "primary", "exprList", "listInit", "fieldInitializerList", + "optField", "mapInitializerList", "escapeIdent", "optExpr", "literal", + } + staticData.PredictionContextCache = antlr.NewPredictionContextCache() + staticData.serializedATN = []int32{ + 4, 1, 37, 259, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, + 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, + 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, + 2, 16, 7, 16, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, + 1, 44, 8, 1, 1, 2, 1, 2, 1, 2, 5, 2, 49, 8, 2, 10, 2, 12, 2, 52, 9, 2, + 1, 3, 1, 3, 1, 3, 5, 3, 57, 8, 3, 10, 3, 12, 3, 60, 9, 3, 1, 4, 1, 4, 1, + 4, 1, 4, 1, 4, 1, 4, 5, 4, 68, 8, 4, 10, 4, 12, 4, 71, 9, 4, 1, 5, 1, 5, + 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 5, 5, 82, 8, 5, 10, 5, 12, 5, + 85, 9, 5, 1, 6, 1, 6, 4, 6, 89, 8, 6, 11, 6, 12, 6, 90, 1, 6, 1, 6, 4, + 6, 95, 8, 6, 11, 6, 12, 6, 96, 1, 6, 3, 6, 100, 8, 6, 1, 7, 1, 7, 1, 7, + 1, 7, 1, 7, 1, 7, 3, 7, 108, 8, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, + 3, 7, 116, 8, 7, 1, 7, 1, 7, 1, 7, 1, 7, 3, 7, 122, 8, 7, 1, 7, 1, 7, 1, + 7, 5, 7, 127, 8, 7, 10, 7, 12, 7, 130, 9, 7, 1, 8, 3, 8, 133, 8, 8, 1, + 8, 1, 8, 3, 8, 137, 8, 8, 1, 8, 1, 8, 1, 8, 3, 8, 142, 8, 8, 1, 8, 1, 8, + 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 3, 8, 151, 8, 8, 1, 8, 3, 8, 154, 8, 8, 1, + 8, 1, 8, 1, 8, 3, 8, 159, 8, 8, 1, 8, 3, 8, 162, 8, 8, 1, 8, 1, 8, 3, 8, + 166, 8, 8, 1, 8, 1, 8, 1, 8, 5, 8, 171, 8, 8, 10, 8, 12, 8, 174, 9, 8, + 1, 8, 1, 8, 3, 8, 178, 8, 8, 1, 8, 3, 8, 181, 8, 8, 1, 8, 1, 8, 3, 8, 185, + 8, 8, 1, 9, 1, 9, 1, 9, 5, 9, 190, 8, 9, 10, 9, 12, 9, 193, 9, 9, 1, 10, + 1, 10, 1, 10, 5, 10, 198, 8, 10, 10, 10, 12, 10, 201, 9, 10, 1, 11, 1, + 11, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 1, 11, 5, 11, 211, 8, 11, 10, 11, + 12, 11, 214, 9, 11, 1, 12, 3, 12, 217, 8, 12, 1, 12, 1, 12, 1, 13, 1, 13, + 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 1, 13, 5, 13, 229, 8, 13, 10, 13, 12, + 13, 232, 9, 13, 1, 14, 1, 14, 3, 14, 236, 8, 14, 1, 15, 3, 15, 239, 8, + 15, 1, 15, 1, 15, 1, 16, 3, 16, 244, 8, 16, 1, 16, 1, 16, 1, 16, 3, 16, + 249, 8, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 1, 16, 3, 16, 257, 8, 16, + 1, 16, 0, 3, 8, 10, 14, 17, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, + 24, 26, 28, 30, 32, 0, 3, 1, 0, 1, 7, 1, 0, 23, 25, 2, 0, 18, 18, 22, 22, + 290, 0, 34, 1, 0, 0, 0, 2, 37, 1, 0, 0, 0, 4, 45, 1, 0, 0, 0, 6, 53, 1, + 0, 0, 0, 8, 61, 1, 0, 0, 0, 10, 72, 1, 0, 0, 0, 12, 99, 1, 0, 0, 0, 14, + 101, 1, 0, 0, 0, 16, 184, 1, 0, 0, 0, 18, 186, 1, 0, 0, 0, 20, 194, 1, + 0, 0, 0, 22, 202, 1, 0, 0, 0, 24, 216, 1, 0, 0, 0, 26, 220, 1, 0, 0, 0, + 28, 235, 1, 0, 0, 0, 30, 238, 1, 0, 0, 0, 32, 256, 1, 0, 0, 0, 34, 35, + 3, 2, 1, 0, 35, 36, 5, 0, 0, 1, 36, 1, 1, 0, 0, 0, 37, 43, 3, 4, 2, 0, + 38, 39, 5, 20, 0, 0, 39, 40, 3, 4, 2, 0, 40, 41, 5, 21, 0, 0, 41, 42, 3, + 2, 1, 0, 42, 44, 1, 0, 0, 0, 43, 38, 1, 0, 0, 0, 43, 44, 1, 0, 0, 0, 44, + 3, 1, 0, 0, 0, 45, 50, 3, 6, 3, 0, 46, 47, 5, 9, 0, 0, 47, 49, 3, 6, 3, + 0, 48, 46, 1, 0, 0, 0, 49, 52, 1, 0, 0, 0, 50, 48, 1, 0, 0, 0, 50, 51, + 1, 0, 0, 0, 51, 5, 1, 0, 0, 0, 52, 50, 1, 0, 0, 0, 53, 58, 3, 8, 4, 0, + 54, 55, 5, 8, 0, 0, 55, 57, 3, 8, 4, 0, 56, 54, 1, 0, 0, 0, 57, 60, 1, + 0, 0, 0, 58, 56, 1, 0, 0, 0, 58, 59, 1, 0, 0, 0, 59, 7, 1, 0, 0, 0, 60, + 58, 1, 0, 0, 0, 61, 62, 6, 4, -1, 0, 62, 63, 3, 10, 5, 0, 63, 69, 1, 0, + 0, 0, 64, 65, 10, 1, 0, 0, 65, 66, 7, 0, 0, 0, 66, 68, 3, 8, 4, 2, 67, + 64, 1, 0, 0, 0, 68, 71, 1, 0, 0, 0, 69, 67, 1, 0, 0, 0, 69, 70, 1, 0, 0, + 0, 70, 9, 1, 0, 0, 0, 71, 69, 1, 0, 0, 0, 72, 73, 6, 5, -1, 0, 73, 74, + 3, 12, 6, 0, 74, 83, 1, 0, 0, 0, 75, 76, 10, 2, 0, 0, 76, 77, 7, 1, 0, + 0, 77, 82, 3, 10, 5, 3, 78, 79, 10, 1, 0, 0, 79, 80, 7, 2, 0, 0, 80, 82, + 3, 10, 5, 2, 81, 75, 1, 0, 0, 0, 81, 78, 1, 0, 0, 0, 82, 85, 1, 0, 0, 0, + 83, 81, 1, 0, 0, 0, 83, 84, 1, 0, 0, 0, 84, 11, 1, 0, 0, 0, 85, 83, 1, + 0, 0, 0, 86, 100, 3, 14, 7, 0, 87, 89, 5, 19, 0, 0, 88, 87, 1, 0, 0, 0, + 89, 90, 1, 0, 0, 0, 90, 88, 1, 0, 0, 0, 90, 91, 1, 0, 0, 0, 91, 92, 1, + 0, 0, 0, 92, 100, 3, 14, 7, 0, 93, 95, 5, 18, 0, 0, 94, 93, 1, 0, 0, 0, + 95, 96, 1, 0, 0, 0, 96, 94, 1, 0, 0, 0, 96, 97, 1, 0, 0, 0, 97, 98, 1, + 0, 0, 0, 98, 100, 3, 14, 7, 0, 99, 86, 1, 0, 0, 0, 99, 88, 1, 0, 0, 0, + 99, 94, 1, 0, 0, 0, 100, 13, 1, 0, 0, 0, 101, 102, 6, 7, -1, 0, 102, 103, + 3, 16, 8, 0, 103, 128, 1, 0, 0, 0, 104, 105, 10, 3, 0, 0, 105, 107, 5, + 16, 0, 0, 106, 108, 5, 20, 0, 0, 107, 106, 1, 0, 0, 0, 107, 108, 1, 0, + 0, 0, 108, 109, 1, 0, 0, 0, 109, 127, 3, 28, 14, 0, 110, 111, 10, 2, 0, + 0, 111, 112, 5, 16, 0, 0, 112, 113, 5, 36, 0, 0, 113, 115, 5, 14, 0, 0, + 114, 116, 3, 18, 9, 0, 115, 114, 1, 0, 0, 0, 115, 116, 1, 0, 0, 0, 116, + 117, 1, 0, 0, 0, 117, 127, 5, 15, 0, 0, 118, 119, 10, 1, 0, 0, 119, 121, + 5, 10, 0, 0, 120, 122, 5, 20, 0, 0, 121, 120, 1, 0, 0, 0, 121, 122, 1, + 0, 0, 0, 122, 123, 1, 0, 0, 0, 123, 124, 3, 2, 1, 0, 124, 125, 5, 11, 0, + 0, 125, 127, 1, 0, 0, 0, 126, 104, 1, 0, 0, 0, 126, 110, 1, 0, 0, 0, 126, + 118, 1, 0, 0, 0, 127, 130, 1, 0, 0, 0, 128, 126, 1, 0, 0, 0, 128, 129, + 1, 0, 0, 0, 129, 15, 1, 0, 0, 0, 130, 128, 1, 0, 0, 0, 131, 133, 5, 16, + 0, 0, 132, 131, 1, 0, 0, 0, 132, 133, 1, 0, 0, 0, 133, 134, 1, 0, 0, 0, + 134, 185, 5, 36, 0, 0, 135, 137, 5, 16, 0, 0, 136, 135, 1, 0, 0, 0, 136, + 137, 1, 0, 0, 0, 137, 138, 1, 0, 0, 0, 138, 139, 5, 36, 0, 0, 139, 141, + 5, 14, 0, 0, 140, 142, 3, 18, 9, 0, 141, 140, 1, 0, 0, 0, 141, 142, 1, + 0, 0, 0, 142, 143, 1, 0, 0, 0, 143, 185, 5, 15, 0, 0, 144, 145, 5, 14, + 0, 0, 145, 146, 3, 2, 1, 0, 146, 147, 5, 15, 0, 0, 147, 185, 1, 0, 0, 0, + 148, 150, 5, 10, 0, 0, 149, 151, 3, 20, 10, 0, 150, 149, 1, 0, 0, 0, 150, + 151, 1, 0, 0, 0, 151, 153, 1, 0, 0, 0, 152, 154, 5, 17, 0, 0, 153, 152, + 1, 0, 0, 0, 153, 154, 1, 0, 0, 0, 154, 155, 1, 0, 0, 0, 155, 185, 5, 11, + 0, 0, 156, 158, 5, 12, 0, 0, 157, 159, 3, 26, 13, 0, 158, 157, 1, 0, 0, + 0, 158, 159, 1, 0, 0, 0, 159, 161, 1, 0, 0, 0, 160, 162, 5, 17, 0, 0, 161, + 160, 1, 0, 0, 0, 161, 162, 1, 0, 0, 0, 162, 163, 1, 0, 0, 0, 163, 185, + 5, 13, 0, 0, 164, 166, 5, 16, 0, 0, 165, 164, 1, 0, 0, 0, 165, 166, 1, + 0, 0, 0, 166, 167, 1, 0, 0, 0, 167, 172, 5, 36, 0, 0, 168, 169, 5, 16, + 0, 0, 169, 171, 5, 36, 0, 0, 170, 168, 1, 0, 0, 0, 171, 174, 1, 0, 0, 0, + 172, 170, 1, 0, 0, 0, 172, 173, 1, 0, 0, 0, 173, 175, 1, 0, 0, 0, 174, + 172, 1, 0, 0, 0, 175, 177, 5, 12, 0, 0, 176, 178, 3, 22, 11, 0, 177, 176, + 1, 0, 0, 0, 177, 178, 1, 0, 0, 0, 178, 180, 1, 0, 0, 0, 179, 181, 5, 17, + 0, 0, 180, 179, 1, 0, 0, 0, 180, 181, 1, 0, 0, 0, 181, 182, 1, 0, 0, 0, + 182, 185, 5, 13, 0, 0, 183, 185, 3, 32, 16, 0, 184, 132, 1, 0, 0, 0, 184, + 136, 1, 0, 0, 0, 184, 144, 1, 0, 0, 0, 184, 148, 1, 0, 0, 0, 184, 156, + 1, 0, 0, 0, 184, 165, 1, 0, 0, 0, 184, 183, 1, 0, 0, 0, 185, 17, 1, 0, + 0, 0, 186, 191, 3, 2, 1, 0, 187, 188, 5, 17, 0, 0, 188, 190, 3, 2, 1, 0, + 189, 187, 1, 0, 0, 0, 190, 193, 1, 0, 0, 0, 191, 189, 1, 0, 0, 0, 191, + 192, 1, 0, 0, 0, 192, 19, 1, 0, 0, 0, 193, 191, 1, 0, 0, 0, 194, 199, 3, + 30, 15, 0, 195, 196, 5, 17, 0, 0, 196, 198, 3, 30, 15, 0, 197, 195, 1, + 0, 0, 0, 198, 201, 1, 0, 0, 0, 199, 197, 1, 0, 0, 0, 199, 200, 1, 0, 0, + 0, 200, 21, 1, 0, 0, 0, 201, 199, 1, 0, 0, 0, 202, 203, 3, 24, 12, 0, 203, + 204, 5, 21, 0, 0, 204, 212, 3, 2, 1, 0, 205, 206, 5, 17, 0, 0, 206, 207, + 3, 24, 12, 0, 207, 208, 5, 21, 0, 0, 208, 209, 3, 2, 1, 0, 209, 211, 1, + 0, 0, 0, 210, 205, 1, 0, 0, 0, 211, 214, 1, 0, 0, 0, 212, 210, 1, 0, 0, + 0, 212, 213, 1, 0, 0, 0, 213, 23, 1, 0, 0, 0, 214, 212, 1, 0, 0, 0, 215, + 217, 5, 20, 0, 0, 216, 215, 1, 0, 0, 0, 216, 217, 1, 0, 0, 0, 217, 218, + 1, 0, 0, 0, 218, 219, 3, 28, 14, 0, 219, 25, 1, 0, 0, 0, 220, 221, 3, 30, + 15, 0, 221, 222, 5, 21, 0, 0, 222, 230, 3, 2, 1, 0, 223, 224, 5, 17, 0, + 0, 224, 225, 3, 30, 15, 0, 225, 226, 5, 21, 0, 0, 226, 227, 3, 2, 1, 0, + 227, 229, 1, 0, 0, 0, 228, 223, 1, 0, 0, 0, 229, 232, 1, 0, 0, 0, 230, + 228, 1, 0, 0, 0, 230, 231, 1, 0, 0, 0, 231, 27, 1, 0, 0, 0, 232, 230, 1, + 0, 0, 0, 233, 236, 5, 36, 0, 0, 234, 236, 5, 37, 0, 0, 235, 233, 1, 0, + 0, 0, 235, 234, 1, 0, 0, 0, 236, 29, 1, 0, 0, 0, 237, 239, 5, 20, 0, 0, + 238, 237, 1, 0, 0, 0, 238, 239, 1, 0, 0, 0, 239, 240, 1, 0, 0, 0, 240, + 241, 3, 2, 1, 0, 241, 31, 1, 0, 0, 0, 242, 244, 5, 18, 0, 0, 243, 242, + 1, 0, 0, 0, 243, 244, 1, 0, 0, 0, 244, 245, 1, 0, 0, 0, 245, 257, 5, 32, + 0, 0, 246, 257, 5, 33, 0, 0, 247, 249, 5, 18, 0, 0, 248, 247, 1, 0, 0, + 0, 248, 249, 1, 0, 0, 0, 249, 250, 1, 0, 0, 0, 250, 257, 5, 31, 0, 0, 251, + 257, 5, 34, 0, 0, 252, 257, 5, 35, 0, 0, 253, 257, 5, 26, 0, 0, 254, 257, + 5, 27, 0, 0, 255, 257, 5, 28, 0, 0, 256, 243, 1, 0, 0, 0, 256, 246, 1, + 0, 0, 0, 256, 248, 1, 0, 0, 0, 256, 251, 1, 0, 0, 0, 256, 252, 1, 0, 0, + 0, 256, 253, 1, 0, 0, 0, 256, 254, 1, 0, 0, 0, 256, 255, 1, 0, 0, 0, 257, + 33, 1, 0, 0, 0, 36, 43, 50, 58, 69, 81, 83, 90, 96, 99, 107, 115, 121, + 126, 128, 132, 136, 141, 150, 153, 158, 161, 165, 172, 177, 180, 184, 191, + 199, 212, 216, 230, 235, 238, 243, 248, 256, + } + deserializer := antlr.NewATNDeserializer(nil) + staticData.atn = deserializer.Deserialize(staticData.serializedATN) + atn := staticData.atn + staticData.decisionToDFA = make([]*antlr.DFA, len(atn.DecisionToState)) + decisionToDFA := staticData.decisionToDFA + for index, state := range atn.DecisionToState { + decisionToDFA[index] = antlr.NewDFA(state, index) + } +} + +// CELParserInit initializes any static state used to implement CELParser. By default the +// static state used to implement the parser is lazily initialized during the first call to +// NewCELParser(). You can call this function if you wish to initialize the static state ahead +// of time. +func CELParserInit() { + staticData := &CELParserStaticData + staticData.once.Do(celParserInit) +} + +// NewCELParser produces a new parser instance for the optional input antlr.TokenStream. +func NewCELParser(input antlr.TokenStream) *CELParser { + CELParserInit() + this := new(CELParser) + this.BaseParser = antlr.NewBaseParser(input) + staticData := &CELParserStaticData + this.Interpreter = antlr.NewParserATNSimulator(this, staticData.atn, staticData.decisionToDFA, staticData.PredictionContextCache) + this.RuleNames = staticData.RuleNames + this.LiteralNames = staticData.LiteralNames + this.SymbolicNames = staticData.SymbolicNames + this.GrammarFileName = "CEL.g4" + + return this +} + +// CELParser tokens. +const ( + CELParserEOF = antlr.TokenEOF + CELParserEQUALS = 1 + CELParserNOT_EQUALS = 2 + CELParserIN = 3 + CELParserLESS = 4 + CELParserLESS_EQUALS = 5 + CELParserGREATER_EQUALS = 6 + CELParserGREATER = 7 + CELParserLOGICAL_AND = 8 + CELParserLOGICAL_OR = 9 + CELParserLBRACKET = 10 + CELParserRPRACKET = 11 + CELParserLBRACE = 12 + CELParserRBRACE = 13 + CELParserLPAREN = 14 + CELParserRPAREN = 15 + CELParserDOT = 16 + CELParserCOMMA = 17 + CELParserMINUS = 18 + CELParserEXCLAM = 19 + CELParserQUESTIONMARK = 20 + CELParserCOLON = 21 + CELParserPLUS = 22 + CELParserSTAR = 23 + CELParserSLASH = 24 + CELParserPERCENT = 25 + CELParserCEL_TRUE = 26 + CELParserCEL_FALSE = 27 + CELParserNUL = 28 + CELParserWHITESPACE = 29 + CELParserCOMMENT = 30 + CELParserNUM_FLOAT = 31 + CELParserNUM_INT = 32 + CELParserNUM_UINT = 33 + CELParserSTRING = 34 + CELParserBYTES = 35 + CELParserIDENTIFIER = 36 + CELParserESC_IDENTIFIER = 37 +) + +// CELParser rules. +const ( + CELParserRULE_start = 0 + CELParserRULE_expr = 1 + CELParserRULE_conditionalOr = 2 + CELParserRULE_conditionalAnd = 3 + CELParserRULE_relation = 4 + CELParserRULE_calc = 5 + CELParserRULE_unary = 6 + CELParserRULE_member = 7 + CELParserRULE_primary = 8 + CELParserRULE_exprList = 9 + CELParserRULE_listInit = 10 + CELParserRULE_fieldInitializerList = 11 + CELParserRULE_optField = 12 + CELParserRULE_mapInitializerList = 13 + CELParserRULE_escapeIdent = 14 + CELParserRULE_optExpr = 15 + CELParserRULE_literal = 16 +) + +// IStartContext is an interface to support dynamic dispatch. +type IStartContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetE returns the e rule contexts. + GetE() IExprContext + + // SetE sets the e rule contexts. + SetE(IExprContext) + + // Getter signatures + EOF() antlr.TerminalNode + Expr() IExprContext + + // IsStartContext differentiates from other interfaces. + IsStartContext() +} + +type StartContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + e IExprContext +} + +func NewEmptyStartContext() *StartContext { + var p = new(StartContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_start + return p +} + +func InitEmptyStartContext(p *StartContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_start +} + +func (*StartContext) IsStartContext() {} + +func NewStartContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *StartContext { + var p = new(StartContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_start + + return p +} + +func (s *StartContext) GetParser() antlr.Parser { return s.parser } + +func (s *StartContext) GetE() IExprContext { return s.e } + +func (s *StartContext) SetE(v IExprContext) { s.e = v } + +func (s *StartContext) EOF() antlr.TerminalNode { + return s.GetToken(CELParserEOF, 0) +} + +func (s *StartContext) Expr() IExprContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *StartContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *StartContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *StartContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterStart(s) + } +} + +func (s *StartContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitStart(s) + } +} + +func (s *StartContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitStart(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Start_() (localctx IStartContext) { + localctx = NewStartContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 0, CELParserRULE_start) + p.EnterOuterAlt(localctx, 1) + { + p.SetState(34) + + var _x = p.Expr() + + localctx.(*StartContext).e = _x + } + { + p.SetState(35) + p.Match(CELParserEOF) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IExprContext is an interface to support dynamic dispatch. +type IExprContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetOp returns the op token. + GetOp() antlr.Token + + // SetOp sets the op token. + SetOp(antlr.Token) + + // GetE returns the e rule contexts. + GetE() IConditionalOrContext + + // GetE1 returns the e1 rule contexts. + GetE1() IConditionalOrContext + + // GetE2 returns the e2 rule contexts. + GetE2() IExprContext + + // SetE sets the e rule contexts. + SetE(IConditionalOrContext) + + // SetE1 sets the e1 rule contexts. + SetE1(IConditionalOrContext) + + // SetE2 sets the e2 rule contexts. + SetE2(IExprContext) + + // Getter signatures + AllConditionalOr() []IConditionalOrContext + ConditionalOr(i int) IConditionalOrContext + COLON() antlr.TerminalNode + QUESTIONMARK() antlr.TerminalNode + Expr() IExprContext + + // IsExprContext differentiates from other interfaces. + IsExprContext() +} + +type ExprContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + e IConditionalOrContext + op antlr.Token + e1 IConditionalOrContext + e2 IExprContext +} + +func NewEmptyExprContext() *ExprContext { + var p = new(ExprContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_expr + return p +} + +func InitEmptyExprContext(p *ExprContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_expr +} + +func (*ExprContext) IsExprContext() {} + +func NewExprContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ExprContext { + var p = new(ExprContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_expr + + return p +} + +func (s *ExprContext) GetParser() antlr.Parser { return s.parser } + +func (s *ExprContext) GetOp() antlr.Token { return s.op } + +func (s *ExprContext) SetOp(v antlr.Token) { s.op = v } + +func (s *ExprContext) GetE() IConditionalOrContext { return s.e } + +func (s *ExprContext) GetE1() IConditionalOrContext { return s.e1 } + +func (s *ExprContext) GetE2() IExprContext { return s.e2 } + +func (s *ExprContext) SetE(v IConditionalOrContext) { s.e = v } + +func (s *ExprContext) SetE1(v IConditionalOrContext) { s.e1 = v } + +func (s *ExprContext) SetE2(v IExprContext) { s.e2 = v } + +func (s *ExprContext) AllConditionalOr() []IConditionalOrContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IConditionalOrContext); ok { + len++ + } + } + + tst := make([]IConditionalOrContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IConditionalOrContext); ok { + tst[i] = t.(IConditionalOrContext) + i++ + } + } + + return tst +} + +func (s *ExprContext) ConditionalOr(i int) IConditionalOrContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IConditionalOrContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IConditionalOrContext) +} + +func (s *ExprContext) COLON() antlr.TerminalNode { + return s.GetToken(CELParserCOLON, 0) +} + +func (s *ExprContext) QUESTIONMARK() antlr.TerminalNode { + return s.GetToken(CELParserQUESTIONMARK, 0) +} + +func (s *ExprContext) Expr() IExprContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *ExprContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *ExprContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *ExprContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterExpr(s) + } +} + +func (s *ExprContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitExpr(s) + } +} + +func (s *ExprContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitExpr(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Expr() (localctx IExprContext) { + localctx = NewExprContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 2, CELParserRULE_expr) + var _la int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(37) + + var _x = p.ConditionalOr() + + localctx.(*ExprContext).e = _x + } + p.SetState(43) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserQUESTIONMARK { + { + p.SetState(38) + + var _m = p.Match(CELParserQUESTIONMARK) + + localctx.(*ExprContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(39) + + var _x = p.ConditionalOr() + + localctx.(*ExprContext).e1 = _x + } + { + p.SetState(40) + p.Match(CELParserCOLON) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(41) + + var _x = p.Expr() + + localctx.(*ExprContext).e2 = _x + } + + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IConditionalOrContext is an interface to support dynamic dispatch. +type IConditionalOrContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetS9 returns the s9 token. + GetS9() antlr.Token + + // SetS9 sets the s9 token. + SetS9(antlr.Token) + + // GetOps returns the ops token list. + GetOps() []antlr.Token + + // SetOps sets the ops token list. + SetOps([]antlr.Token) + + // GetE returns the e rule contexts. + GetE() IConditionalAndContext + + // Get_conditionalAnd returns the _conditionalAnd rule contexts. + Get_conditionalAnd() IConditionalAndContext + + // SetE sets the e rule contexts. + SetE(IConditionalAndContext) + + // Set_conditionalAnd sets the _conditionalAnd rule contexts. + Set_conditionalAnd(IConditionalAndContext) + + // GetE1 returns the e1 rule context list. + GetE1() []IConditionalAndContext + + // SetE1 sets the e1 rule context list. + SetE1([]IConditionalAndContext) + + // Getter signatures + AllConditionalAnd() []IConditionalAndContext + ConditionalAnd(i int) IConditionalAndContext + AllLOGICAL_OR() []antlr.TerminalNode + LOGICAL_OR(i int) antlr.TerminalNode + + // IsConditionalOrContext differentiates from other interfaces. + IsConditionalOrContext() +} + +type ConditionalOrContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + e IConditionalAndContext + s9 antlr.Token + ops []antlr.Token + _conditionalAnd IConditionalAndContext + e1 []IConditionalAndContext +} + +func NewEmptyConditionalOrContext() *ConditionalOrContext { + var p = new(ConditionalOrContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_conditionalOr + return p +} + +func InitEmptyConditionalOrContext(p *ConditionalOrContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_conditionalOr +} + +func (*ConditionalOrContext) IsConditionalOrContext() {} + +func NewConditionalOrContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ConditionalOrContext { + var p = new(ConditionalOrContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_conditionalOr + + return p +} + +func (s *ConditionalOrContext) GetParser() antlr.Parser { return s.parser } + +func (s *ConditionalOrContext) GetS9() antlr.Token { return s.s9 } + +func (s *ConditionalOrContext) SetS9(v antlr.Token) { s.s9 = v } + +func (s *ConditionalOrContext) GetOps() []antlr.Token { return s.ops } + +func (s *ConditionalOrContext) SetOps(v []antlr.Token) { s.ops = v } + +func (s *ConditionalOrContext) GetE() IConditionalAndContext { return s.e } + +func (s *ConditionalOrContext) Get_conditionalAnd() IConditionalAndContext { return s._conditionalAnd } + +func (s *ConditionalOrContext) SetE(v IConditionalAndContext) { s.e = v } + +func (s *ConditionalOrContext) Set_conditionalAnd(v IConditionalAndContext) { s._conditionalAnd = v } + +func (s *ConditionalOrContext) GetE1() []IConditionalAndContext { return s.e1 } + +func (s *ConditionalOrContext) SetE1(v []IConditionalAndContext) { s.e1 = v } + +func (s *ConditionalOrContext) AllConditionalAnd() []IConditionalAndContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IConditionalAndContext); ok { + len++ + } + } + + tst := make([]IConditionalAndContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IConditionalAndContext); ok { + tst[i] = t.(IConditionalAndContext) + i++ + } + } + + return tst +} + +func (s *ConditionalOrContext) ConditionalAnd(i int) IConditionalAndContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IConditionalAndContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IConditionalAndContext) +} + +func (s *ConditionalOrContext) AllLOGICAL_OR() []antlr.TerminalNode { + return s.GetTokens(CELParserLOGICAL_OR) +} + +func (s *ConditionalOrContext) LOGICAL_OR(i int) antlr.TerminalNode { + return s.GetToken(CELParserLOGICAL_OR, i) +} + +func (s *ConditionalOrContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *ConditionalOrContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *ConditionalOrContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterConditionalOr(s) + } +} + +func (s *ConditionalOrContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitConditionalOr(s) + } +} + +func (s *ConditionalOrContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitConditionalOr(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) ConditionalOr() (localctx IConditionalOrContext) { + localctx = NewConditionalOrContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 4, CELParserRULE_conditionalOr) + var _la int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(45) + + var _x = p.ConditionalAnd() + + localctx.(*ConditionalOrContext).e = _x + } + p.SetState(50) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + for _la == CELParserLOGICAL_OR { + { + p.SetState(46) + + var _m = p.Match(CELParserLOGICAL_OR) + + localctx.(*ConditionalOrContext).s9 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*ConditionalOrContext).ops = append(localctx.(*ConditionalOrContext).ops, localctx.(*ConditionalOrContext).s9) + { + p.SetState(47) + + var _x = p.ConditionalAnd() + + localctx.(*ConditionalOrContext)._conditionalAnd = _x + } + localctx.(*ConditionalOrContext).e1 = append(localctx.(*ConditionalOrContext).e1, localctx.(*ConditionalOrContext)._conditionalAnd) + + p.SetState(52) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IConditionalAndContext is an interface to support dynamic dispatch. +type IConditionalAndContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetS8 returns the s8 token. + GetS8() antlr.Token + + // SetS8 sets the s8 token. + SetS8(antlr.Token) + + // GetOps returns the ops token list. + GetOps() []antlr.Token + + // SetOps sets the ops token list. + SetOps([]antlr.Token) + + // GetE returns the e rule contexts. + GetE() IRelationContext + + // Get_relation returns the _relation rule contexts. + Get_relation() IRelationContext + + // SetE sets the e rule contexts. + SetE(IRelationContext) + + // Set_relation sets the _relation rule contexts. + Set_relation(IRelationContext) + + // GetE1 returns the e1 rule context list. + GetE1() []IRelationContext + + // SetE1 sets the e1 rule context list. + SetE1([]IRelationContext) + + // Getter signatures + AllRelation() []IRelationContext + Relation(i int) IRelationContext + AllLOGICAL_AND() []antlr.TerminalNode + LOGICAL_AND(i int) antlr.TerminalNode + + // IsConditionalAndContext differentiates from other interfaces. + IsConditionalAndContext() +} + +type ConditionalAndContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + e IRelationContext + s8 antlr.Token + ops []antlr.Token + _relation IRelationContext + e1 []IRelationContext +} + +func NewEmptyConditionalAndContext() *ConditionalAndContext { + var p = new(ConditionalAndContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_conditionalAnd + return p +} + +func InitEmptyConditionalAndContext(p *ConditionalAndContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_conditionalAnd +} + +func (*ConditionalAndContext) IsConditionalAndContext() {} + +func NewConditionalAndContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ConditionalAndContext { + var p = new(ConditionalAndContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_conditionalAnd + + return p +} + +func (s *ConditionalAndContext) GetParser() antlr.Parser { return s.parser } + +func (s *ConditionalAndContext) GetS8() antlr.Token { return s.s8 } + +func (s *ConditionalAndContext) SetS8(v antlr.Token) { s.s8 = v } + +func (s *ConditionalAndContext) GetOps() []antlr.Token { return s.ops } + +func (s *ConditionalAndContext) SetOps(v []antlr.Token) { s.ops = v } + +func (s *ConditionalAndContext) GetE() IRelationContext { return s.e } + +func (s *ConditionalAndContext) Get_relation() IRelationContext { return s._relation } + +func (s *ConditionalAndContext) SetE(v IRelationContext) { s.e = v } + +func (s *ConditionalAndContext) Set_relation(v IRelationContext) { s._relation = v } + +func (s *ConditionalAndContext) GetE1() []IRelationContext { return s.e1 } + +func (s *ConditionalAndContext) SetE1(v []IRelationContext) { s.e1 = v } + +func (s *ConditionalAndContext) AllRelation() []IRelationContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IRelationContext); ok { + len++ + } + } + + tst := make([]IRelationContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IRelationContext); ok { + tst[i] = t.(IRelationContext) + i++ + } + } + + return tst +} + +func (s *ConditionalAndContext) Relation(i int) IRelationContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IRelationContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IRelationContext) +} + +func (s *ConditionalAndContext) AllLOGICAL_AND() []antlr.TerminalNode { + return s.GetTokens(CELParserLOGICAL_AND) +} + +func (s *ConditionalAndContext) LOGICAL_AND(i int) antlr.TerminalNode { + return s.GetToken(CELParserLOGICAL_AND, i) +} + +func (s *ConditionalAndContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *ConditionalAndContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *ConditionalAndContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterConditionalAnd(s) + } +} + +func (s *ConditionalAndContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitConditionalAnd(s) + } +} + +func (s *ConditionalAndContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitConditionalAnd(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) ConditionalAnd() (localctx IConditionalAndContext) { + localctx = NewConditionalAndContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 6, CELParserRULE_conditionalAnd) + var _la int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(53) + + var _x = p.relation(0) + + localctx.(*ConditionalAndContext).e = _x + } + p.SetState(58) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + for _la == CELParserLOGICAL_AND { + { + p.SetState(54) + + var _m = p.Match(CELParserLOGICAL_AND) + + localctx.(*ConditionalAndContext).s8 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*ConditionalAndContext).ops = append(localctx.(*ConditionalAndContext).ops, localctx.(*ConditionalAndContext).s8) + { + p.SetState(55) + + var _x = p.relation(0) + + localctx.(*ConditionalAndContext)._relation = _x + } + localctx.(*ConditionalAndContext).e1 = append(localctx.(*ConditionalAndContext).e1, localctx.(*ConditionalAndContext)._relation) + + p.SetState(60) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IRelationContext is an interface to support dynamic dispatch. +type IRelationContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetOp returns the op token. + GetOp() antlr.Token + + // SetOp sets the op token. + SetOp(antlr.Token) + + // Getter signatures + Calc() ICalcContext + AllRelation() []IRelationContext + Relation(i int) IRelationContext + LESS() antlr.TerminalNode + LESS_EQUALS() antlr.TerminalNode + GREATER_EQUALS() antlr.TerminalNode + GREATER() antlr.TerminalNode + EQUALS() antlr.TerminalNode + NOT_EQUALS() antlr.TerminalNode + IN() antlr.TerminalNode + + // IsRelationContext differentiates from other interfaces. + IsRelationContext() +} + +type RelationContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + op antlr.Token +} + +func NewEmptyRelationContext() *RelationContext { + var p = new(RelationContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_relation + return p +} + +func InitEmptyRelationContext(p *RelationContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_relation +} + +func (*RelationContext) IsRelationContext() {} + +func NewRelationContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *RelationContext { + var p = new(RelationContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_relation + + return p +} + +func (s *RelationContext) GetParser() antlr.Parser { return s.parser } + +func (s *RelationContext) GetOp() antlr.Token { return s.op } + +func (s *RelationContext) SetOp(v antlr.Token) { s.op = v } + +func (s *RelationContext) Calc() ICalcContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(ICalcContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(ICalcContext) +} + +func (s *RelationContext) AllRelation() []IRelationContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IRelationContext); ok { + len++ + } + } + + tst := make([]IRelationContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IRelationContext); ok { + tst[i] = t.(IRelationContext) + i++ + } + } + + return tst +} + +func (s *RelationContext) Relation(i int) IRelationContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IRelationContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IRelationContext) +} + +func (s *RelationContext) LESS() antlr.TerminalNode { + return s.GetToken(CELParserLESS, 0) +} + +func (s *RelationContext) LESS_EQUALS() antlr.TerminalNode { + return s.GetToken(CELParserLESS_EQUALS, 0) +} + +func (s *RelationContext) GREATER_EQUALS() antlr.TerminalNode { + return s.GetToken(CELParserGREATER_EQUALS, 0) +} + +func (s *RelationContext) GREATER() antlr.TerminalNode { + return s.GetToken(CELParserGREATER, 0) +} + +func (s *RelationContext) EQUALS() antlr.TerminalNode { + return s.GetToken(CELParserEQUALS, 0) +} + +func (s *RelationContext) NOT_EQUALS() antlr.TerminalNode { + return s.GetToken(CELParserNOT_EQUALS, 0) +} + +func (s *RelationContext) IN() antlr.TerminalNode { + return s.GetToken(CELParserIN, 0) +} + +func (s *RelationContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *RelationContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *RelationContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterRelation(s) + } +} + +func (s *RelationContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitRelation(s) + } +} + +func (s *RelationContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitRelation(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Relation() (localctx IRelationContext) { + return p.relation(0) +} + +func (p *CELParser) relation(_p int) (localctx IRelationContext) { + var _parentctx antlr.ParserRuleContext = p.GetParserRuleContext() + + _parentState := p.GetState() + localctx = NewRelationContext(p, p.GetParserRuleContext(), _parentState) + var _prevctx IRelationContext = localctx + var _ antlr.ParserRuleContext = _prevctx // TODO: To prevent unused variable warning. + _startState := 8 + p.EnterRecursionRule(localctx, 8, CELParserRULE_relation, _p) + var _la int + + var _alt int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(62) + p.calc(0) + } + + p.GetParserRuleContext().SetStop(p.GetTokenStream().LT(-1)) + p.SetState(69) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 3, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + for _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + if _alt == 1 { + if p.GetParseListeners() != nil { + p.TriggerExitRuleEvent() + } + _prevctx = localctx + localctx = NewRelationContext(p, _parentctx, _parentState) + p.PushNewRecursionContext(localctx, _startState, CELParserRULE_relation) + p.SetState(64) + + if !(p.Precpred(p.GetParserRuleContext(), 1)) { + p.SetError(antlr.NewFailedPredicateException(p, "p.Precpred(p.GetParserRuleContext(), 1)", "")) + goto errorExit + } + { + p.SetState(65) + + var _lt = p.GetTokenStream().LT(1) + + localctx.(*RelationContext).op = _lt + + _la = p.GetTokenStream().LA(1) + + if !((int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&254) != 0) { + var _ri = p.GetErrorHandler().RecoverInline(p) + + localctx.(*RelationContext).op = _ri + } else { + p.GetErrorHandler().ReportMatch(p) + p.Consume() + } + } + { + p.SetState(66) + p.relation(2) + } + + } + p.SetState(71) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 3, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.UnrollRecursionContexts(_parentctx) + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// ICalcContext is an interface to support dynamic dispatch. +type ICalcContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetOp returns the op token. + GetOp() antlr.Token + + // SetOp sets the op token. + SetOp(antlr.Token) + + // Getter signatures + Unary() IUnaryContext + AllCalc() []ICalcContext + Calc(i int) ICalcContext + STAR() antlr.TerminalNode + SLASH() antlr.TerminalNode + PERCENT() antlr.TerminalNode + PLUS() antlr.TerminalNode + MINUS() antlr.TerminalNode + + // IsCalcContext differentiates from other interfaces. + IsCalcContext() +} + +type CalcContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + op antlr.Token +} + +func NewEmptyCalcContext() *CalcContext { + var p = new(CalcContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_calc + return p +} + +func InitEmptyCalcContext(p *CalcContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_calc +} + +func (*CalcContext) IsCalcContext() {} + +func NewCalcContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *CalcContext { + var p = new(CalcContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_calc + + return p +} + +func (s *CalcContext) GetParser() antlr.Parser { return s.parser } + +func (s *CalcContext) GetOp() antlr.Token { return s.op } + +func (s *CalcContext) SetOp(v antlr.Token) { s.op = v } + +func (s *CalcContext) Unary() IUnaryContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IUnaryContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IUnaryContext) +} + +func (s *CalcContext) AllCalc() []ICalcContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(ICalcContext); ok { + len++ + } + } + + tst := make([]ICalcContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(ICalcContext); ok { + tst[i] = t.(ICalcContext) + i++ + } + } + + return tst +} + +func (s *CalcContext) Calc(i int) ICalcContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(ICalcContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(ICalcContext) +} + +func (s *CalcContext) STAR() antlr.TerminalNode { + return s.GetToken(CELParserSTAR, 0) +} + +func (s *CalcContext) SLASH() antlr.TerminalNode { + return s.GetToken(CELParserSLASH, 0) +} + +func (s *CalcContext) PERCENT() antlr.TerminalNode { + return s.GetToken(CELParserPERCENT, 0) +} + +func (s *CalcContext) PLUS() antlr.TerminalNode { + return s.GetToken(CELParserPLUS, 0) +} + +func (s *CalcContext) MINUS() antlr.TerminalNode { + return s.GetToken(CELParserMINUS, 0) +} + +func (s *CalcContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *CalcContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *CalcContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterCalc(s) + } +} + +func (s *CalcContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitCalc(s) + } +} + +func (s *CalcContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitCalc(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Calc() (localctx ICalcContext) { + return p.calc(0) +} + +func (p *CELParser) calc(_p int) (localctx ICalcContext) { + var _parentctx antlr.ParserRuleContext = p.GetParserRuleContext() + + _parentState := p.GetState() + localctx = NewCalcContext(p, p.GetParserRuleContext(), _parentState) + var _prevctx ICalcContext = localctx + var _ antlr.ParserRuleContext = _prevctx // TODO: To prevent unused variable warning. + _startState := 10 + p.EnterRecursionRule(localctx, 10, CELParserRULE_calc, _p) + var _la int + + var _alt int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(73) + p.Unary() + } + + p.GetParserRuleContext().SetStop(p.GetTokenStream().LT(-1)) + p.SetState(83) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 5, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + for _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + if _alt == 1 { + if p.GetParseListeners() != nil { + p.TriggerExitRuleEvent() + } + _prevctx = localctx + p.SetState(81) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + + switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 4, p.GetParserRuleContext()) { + case 1: + localctx = NewCalcContext(p, _parentctx, _parentState) + p.PushNewRecursionContext(localctx, _startState, CELParserRULE_calc) + p.SetState(75) + + if !(p.Precpred(p.GetParserRuleContext(), 2)) { + p.SetError(antlr.NewFailedPredicateException(p, "p.Precpred(p.GetParserRuleContext(), 2)", "")) + goto errorExit + } + { + p.SetState(76) + + var _lt = p.GetTokenStream().LT(1) + + localctx.(*CalcContext).op = _lt + + _la = p.GetTokenStream().LA(1) + + if !((int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&58720256) != 0) { + var _ri = p.GetErrorHandler().RecoverInline(p) + + localctx.(*CalcContext).op = _ri + } else { + p.GetErrorHandler().ReportMatch(p) + p.Consume() + } + } + { + p.SetState(77) + p.calc(3) + } + + case 2: + localctx = NewCalcContext(p, _parentctx, _parentState) + p.PushNewRecursionContext(localctx, _startState, CELParserRULE_calc) + p.SetState(78) + + if !(p.Precpred(p.GetParserRuleContext(), 1)) { + p.SetError(antlr.NewFailedPredicateException(p, "p.Precpred(p.GetParserRuleContext(), 1)", "")) + goto errorExit + } + { + p.SetState(79) + + var _lt = p.GetTokenStream().LT(1) + + localctx.(*CalcContext).op = _lt + + _la = p.GetTokenStream().LA(1) + + if !(_la == CELParserMINUS || _la == CELParserPLUS) { + var _ri = p.GetErrorHandler().RecoverInline(p) + + localctx.(*CalcContext).op = _ri + } else { + p.GetErrorHandler().ReportMatch(p) + p.Consume() + } + } + { + p.SetState(80) + p.calc(2) + } + + case antlr.ATNInvalidAltNumber: + goto errorExit + } + + } + p.SetState(85) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 5, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.UnrollRecursionContexts(_parentctx) + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IUnaryContext is an interface to support dynamic dispatch. +type IUnaryContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + // IsUnaryContext differentiates from other interfaces. + IsUnaryContext() +} + +type UnaryContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser +} + +func NewEmptyUnaryContext() *UnaryContext { + var p = new(UnaryContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_unary + return p +} + +func InitEmptyUnaryContext(p *UnaryContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_unary +} + +func (*UnaryContext) IsUnaryContext() {} + +func NewUnaryContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *UnaryContext { + var p = new(UnaryContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_unary + + return p +} + +func (s *UnaryContext) GetParser() antlr.Parser { return s.parser } + +func (s *UnaryContext) CopyAll(ctx *UnaryContext) { + s.CopyFrom(&ctx.BaseParserRuleContext) +} + +func (s *UnaryContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *UnaryContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +type LogicalNotContext struct { + UnaryContext + s19 antlr.Token + ops []antlr.Token +} + +func NewLogicalNotContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *LogicalNotContext { + var p = new(LogicalNotContext) + + InitEmptyUnaryContext(&p.UnaryContext) + p.parser = parser + p.CopyAll(ctx.(*UnaryContext)) + + return p +} + +func (s *LogicalNotContext) GetS19() antlr.Token { return s.s19 } + +func (s *LogicalNotContext) SetS19(v antlr.Token) { s.s19 = v } + +func (s *LogicalNotContext) GetOps() []antlr.Token { return s.ops } + +func (s *LogicalNotContext) SetOps(v []antlr.Token) { s.ops = v } + +func (s *LogicalNotContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *LogicalNotContext) Member() IMemberContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMemberContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMemberContext) +} + +func (s *LogicalNotContext) AllEXCLAM() []antlr.TerminalNode { + return s.GetTokens(CELParserEXCLAM) +} + +func (s *LogicalNotContext) EXCLAM(i int) antlr.TerminalNode { + return s.GetToken(CELParserEXCLAM, i) +} + +func (s *LogicalNotContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterLogicalNot(s) + } +} + +func (s *LogicalNotContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitLogicalNot(s) + } +} + +func (s *LogicalNotContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitLogicalNot(s) + + default: + return t.VisitChildren(s) + } +} + +type MemberExprContext struct { + UnaryContext +} + +func NewMemberExprContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *MemberExprContext { + var p = new(MemberExprContext) + + InitEmptyUnaryContext(&p.UnaryContext) + p.parser = parser + p.CopyAll(ctx.(*UnaryContext)) + + return p +} + +func (s *MemberExprContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *MemberExprContext) Member() IMemberContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMemberContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMemberContext) +} + +func (s *MemberExprContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterMemberExpr(s) + } +} + +func (s *MemberExprContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitMemberExpr(s) + } +} + +func (s *MemberExprContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitMemberExpr(s) + + default: + return t.VisitChildren(s) + } +} + +type NegateContext struct { + UnaryContext + s18 antlr.Token + ops []antlr.Token +} + +func NewNegateContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *NegateContext { + var p = new(NegateContext) + + InitEmptyUnaryContext(&p.UnaryContext) + p.parser = parser + p.CopyAll(ctx.(*UnaryContext)) + + return p +} + +func (s *NegateContext) GetS18() antlr.Token { return s.s18 } + +func (s *NegateContext) SetS18(v antlr.Token) { s.s18 = v } + +func (s *NegateContext) GetOps() []antlr.Token { return s.ops } + +func (s *NegateContext) SetOps(v []antlr.Token) { s.ops = v } + +func (s *NegateContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *NegateContext) Member() IMemberContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMemberContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMemberContext) +} + +func (s *NegateContext) AllMINUS() []antlr.TerminalNode { + return s.GetTokens(CELParserMINUS) +} + +func (s *NegateContext) MINUS(i int) antlr.TerminalNode { + return s.GetToken(CELParserMINUS, i) +} + +func (s *NegateContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterNegate(s) + } +} + +func (s *NegateContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitNegate(s) + } +} + +func (s *NegateContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitNegate(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Unary() (localctx IUnaryContext) { + localctx = NewUnaryContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 12, CELParserRULE_unary) + var _la int + + var _alt int + + p.SetState(99) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + + switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 8, p.GetParserRuleContext()) { + case 1: + localctx = NewMemberExprContext(p, localctx) + p.EnterOuterAlt(localctx, 1) + { + p.SetState(86) + p.member(0) + } + + case 2: + localctx = NewLogicalNotContext(p, localctx) + p.EnterOuterAlt(localctx, 2) + p.SetState(88) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + for ok := true; ok; ok = _la == CELParserEXCLAM { + { + p.SetState(87) + + var _m = p.Match(CELParserEXCLAM) + + localctx.(*LogicalNotContext).s19 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*LogicalNotContext).ops = append(localctx.(*LogicalNotContext).ops, localctx.(*LogicalNotContext).s19) + + p.SetState(90) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + } + { + p.SetState(92) + p.member(0) + } + + case 3: + localctx = NewNegateContext(p, localctx) + p.EnterOuterAlt(localctx, 3) + p.SetState(94) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = 1 + for ok := true; ok; ok = _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + switch _alt { + case 1: + { + p.SetState(93) + + var _m = p.Match(CELParserMINUS) + + localctx.(*NegateContext).s18 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*NegateContext).ops = append(localctx.(*NegateContext).ops, localctx.(*NegateContext).s18) + + default: + p.SetError(antlr.NewNoViableAltException(p, nil, nil, nil, nil, nil)) + goto errorExit + } + + p.SetState(96) + p.GetErrorHandler().Sync(p) + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 7, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + { + p.SetState(98) + p.member(0) + } + + case antlr.ATNInvalidAltNumber: + goto errorExit + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IMemberContext is an interface to support dynamic dispatch. +type IMemberContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + // IsMemberContext differentiates from other interfaces. + IsMemberContext() +} + +type MemberContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser +} + +func NewEmptyMemberContext() *MemberContext { + var p = new(MemberContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_member + return p +} + +func InitEmptyMemberContext(p *MemberContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_member +} + +func (*MemberContext) IsMemberContext() {} + +func NewMemberContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *MemberContext { + var p = new(MemberContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_member + + return p +} + +func (s *MemberContext) GetParser() antlr.Parser { return s.parser } + +func (s *MemberContext) CopyAll(ctx *MemberContext) { + s.CopyFrom(&ctx.BaseParserRuleContext) +} + +func (s *MemberContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *MemberContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +type MemberCallContext struct { + MemberContext + op antlr.Token + id antlr.Token + open antlr.Token + args IExprListContext +} + +func NewMemberCallContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *MemberCallContext { + var p = new(MemberCallContext) + + InitEmptyMemberContext(&p.MemberContext) + p.parser = parser + p.CopyAll(ctx.(*MemberContext)) + + return p +} + +func (s *MemberCallContext) GetOp() antlr.Token { return s.op } + +func (s *MemberCallContext) GetId() antlr.Token { return s.id } + +func (s *MemberCallContext) GetOpen() antlr.Token { return s.open } + +func (s *MemberCallContext) SetOp(v antlr.Token) { s.op = v } + +func (s *MemberCallContext) SetId(v antlr.Token) { s.id = v } + +func (s *MemberCallContext) SetOpen(v antlr.Token) { s.open = v } + +func (s *MemberCallContext) GetArgs() IExprListContext { return s.args } + +func (s *MemberCallContext) SetArgs(v IExprListContext) { s.args = v } + +func (s *MemberCallContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *MemberCallContext) Member() IMemberContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMemberContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMemberContext) +} + +func (s *MemberCallContext) RPAREN() antlr.TerminalNode { + return s.GetToken(CELParserRPAREN, 0) +} + +func (s *MemberCallContext) DOT() antlr.TerminalNode { + return s.GetToken(CELParserDOT, 0) +} + +func (s *MemberCallContext) IDENTIFIER() antlr.TerminalNode { + return s.GetToken(CELParserIDENTIFIER, 0) +} + +func (s *MemberCallContext) LPAREN() antlr.TerminalNode { + return s.GetToken(CELParserLPAREN, 0) +} + +func (s *MemberCallContext) ExprList() IExprListContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprListContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprListContext) +} + +func (s *MemberCallContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterMemberCall(s) + } +} + +func (s *MemberCallContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitMemberCall(s) + } +} + +func (s *MemberCallContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitMemberCall(s) + + default: + return t.VisitChildren(s) + } +} + +type SelectContext struct { + MemberContext + op antlr.Token + opt antlr.Token + id IEscapeIdentContext +} + +func NewSelectContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *SelectContext { + var p = new(SelectContext) + + InitEmptyMemberContext(&p.MemberContext) + p.parser = parser + p.CopyAll(ctx.(*MemberContext)) + + return p +} + +func (s *SelectContext) GetOp() antlr.Token { return s.op } + +func (s *SelectContext) GetOpt() antlr.Token { return s.opt } + +func (s *SelectContext) SetOp(v antlr.Token) { s.op = v } + +func (s *SelectContext) SetOpt(v antlr.Token) { s.opt = v } + +func (s *SelectContext) GetId() IEscapeIdentContext { return s.id } + +func (s *SelectContext) SetId(v IEscapeIdentContext) { s.id = v } + +func (s *SelectContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *SelectContext) Member() IMemberContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMemberContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMemberContext) +} + +func (s *SelectContext) DOT() antlr.TerminalNode { + return s.GetToken(CELParserDOT, 0) +} + +func (s *SelectContext) EscapeIdent() IEscapeIdentContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IEscapeIdentContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IEscapeIdentContext) +} + +func (s *SelectContext) QUESTIONMARK() antlr.TerminalNode { + return s.GetToken(CELParserQUESTIONMARK, 0) +} + +func (s *SelectContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterSelect(s) + } +} + +func (s *SelectContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitSelect(s) + } +} + +func (s *SelectContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitSelect(s) + + default: + return t.VisitChildren(s) + } +} + +type PrimaryExprContext struct { + MemberContext +} + +func NewPrimaryExprContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *PrimaryExprContext { + var p = new(PrimaryExprContext) + + InitEmptyMemberContext(&p.MemberContext) + p.parser = parser + p.CopyAll(ctx.(*MemberContext)) + + return p +} + +func (s *PrimaryExprContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *PrimaryExprContext) Primary() IPrimaryContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IPrimaryContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IPrimaryContext) +} + +func (s *PrimaryExprContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterPrimaryExpr(s) + } +} + +func (s *PrimaryExprContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitPrimaryExpr(s) + } +} + +func (s *PrimaryExprContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitPrimaryExpr(s) + + default: + return t.VisitChildren(s) + } +} + +type IndexContext struct { + MemberContext + op antlr.Token + opt antlr.Token + index IExprContext +} + +func NewIndexContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *IndexContext { + var p = new(IndexContext) + + InitEmptyMemberContext(&p.MemberContext) + p.parser = parser + p.CopyAll(ctx.(*MemberContext)) + + return p +} + +func (s *IndexContext) GetOp() antlr.Token { return s.op } + +func (s *IndexContext) GetOpt() antlr.Token { return s.opt } + +func (s *IndexContext) SetOp(v antlr.Token) { s.op = v } + +func (s *IndexContext) SetOpt(v antlr.Token) { s.opt = v } + +func (s *IndexContext) GetIndex() IExprContext { return s.index } + +func (s *IndexContext) SetIndex(v IExprContext) { s.index = v } + +func (s *IndexContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *IndexContext) Member() IMemberContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMemberContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMemberContext) +} + +func (s *IndexContext) RPRACKET() antlr.TerminalNode { + return s.GetToken(CELParserRPRACKET, 0) +} + +func (s *IndexContext) LBRACKET() antlr.TerminalNode { + return s.GetToken(CELParserLBRACKET, 0) +} + +func (s *IndexContext) Expr() IExprContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *IndexContext) QUESTIONMARK() antlr.TerminalNode { + return s.GetToken(CELParserQUESTIONMARK, 0) +} + +func (s *IndexContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterIndex(s) + } +} + +func (s *IndexContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitIndex(s) + } +} + +func (s *IndexContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitIndex(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Member() (localctx IMemberContext) { + return p.member(0) +} + +func (p *CELParser) member(_p int) (localctx IMemberContext) { + var _parentctx antlr.ParserRuleContext = p.GetParserRuleContext() + + _parentState := p.GetState() + localctx = NewMemberContext(p, p.GetParserRuleContext(), _parentState) + var _prevctx IMemberContext = localctx + var _ antlr.ParserRuleContext = _prevctx // TODO: To prevent unused variable warning. + _startState := 14 + p.EnterRecursionRule(localctx, 14, CELParserRULE_member, _p) + var _la int + + var _alt int + + p.EnterOuterAlt(localctx, 1) + localctx = NewPrimaryExprContext(p, localctx) + p.SetParserRuleContext(localctx) + _prevctx = localctx + + { + p.SetState(102) + p.Primary() + } + + p.GetParserRuleContext().SetStop(p.GetTokenStream().LT(-1)) + p.SetState(128) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 13, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + for _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + if _alt == 1 { + if p.GetParseListeners() != nil { + p.TriggerExitRuleEvent() + } + _prevctx = localctx + p.SetState(126) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + + switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 12, p.GetParserRuleContext()) { + case 1: + localctx = NewSelectContext(p, NewMemberContext(p, _parentctx, _parentState)) + p.PushNewRecursionContext(localctx, _startState, CELParserRULE_member) + p.SetState(104) + + if !(p.Precpred(p.GetParserRuleContext(), 3)) { + p.SetError(antlr.NewFailedPredicateException(p, "p.Precpred(p.GetParserRuleContext(), 3)", "")) + goto errorExit + } + { + p.SetState(105) + + var _m = p.Match(CELParserDOT) + + localctx.(*SelectContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(107) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserQUESTIONMARK { + { + p.SetState(106) + + var _m = p.Match(CELParserQUESTIONMARK) + + localctx.(*SelectContext).opt = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(109) + + var _x = p.EscapeIdent() + + localctx.(*SelectContext).id = _x + } + + case 2: + localctx = NewMemberCallContext(p, NewMemberContext(p, _parentctx, _parentState)) + p.PushNewRecursionContext(localctx, _startState, CELParserRULE_member) + p.SetState(110) + + if !(p.Precpred(p.GetParserRuleContext(), 2)) { + p.SetError(antlr.NewFailedPredicateException(p, "p.Precpred(p.GetParserRuleContext(), 2)", "")) + goto errorExit + } + { + p.SetState(111) + + var _m = p.Match(CELParserDOT) + + localctx.(*MemberCallContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(112) + + var _m = p.Match(CELParserIDENTIFIER) + + localctx.(*MemberCallContext).id = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(113) + + var _m = p.Match(CELParserLPAREN) + + localctx.(*MemberCallContext).open = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(115) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&135762105344) != 0 { + { + p.SetState(114) + + var _x = p.ExprList() + + localctx.(*MemberCallContext).args = _x + } + + } + { + p.SetState(117) + p.Match(CELParserRPAREN) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 3: + localctx = NewIndexContext(p, NewMemberContext(p, _parentctx, _parentState)) + p.PushNewRecursionContext(localctx, _startState, CELParserRULE_member) + p.SetState(118) + + if !(p.Precpred(p.GetParserRuleContext(), 1)) { + p.SetError(antlr.NewFailedPredicateException(p, "p.Precpred(p.GetParserRuleContext(), 1)", "")) + goto errorExit + } + { + p.SetState(119) + + var _m = p.Match(CELParserLBRACKET) + + localctx.(*IndexContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(121) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserQUESTIONMARK { + { + p.SetState(120) + + var _m = p.Match(CELParserQUESTIONMARK) + + localctx.(*IndexContext).opt = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(123) + + var _x = p.Expr() + + localctx.(*IndexContext).index = _x + } + { + p.SetState(124) + p.Match(CELParserRPRACKET) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case antlr.ATNInvalidAltNumber: + goto errorExit + } + + } + p.SetState(130) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 13, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.UnrollRecursionContexts(_parentctx) + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IPrimaryContext is an interface to support dynamic dispatch. +type IPrimaryContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + // IsPrimaryContext differentiates from other interfaces. + IsPrimaryContext() +} + +type PrimaryContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser +} + +func NewEmptyPrimaryContext() *PrimaryContext { + var p = new(PrimaryContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_primary + return p +} + +func InitEmptyPrimaryContext(p *PrimaryContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_primary +} + +func (*PrimaryContext) IsPrimaryContext() {} + +func NewPrimaryContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *PrimaryContext { + var p = new(PrimaryContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_primary + + return p +} + +func (s *PrimaryContext) GetParser() antlr.Parser { return s.parser } + +func (s *PrimaryContext) CopyAll(ctx *PrimaryContext) { + s.CopyFrom(&ctx.BaseParserRuleContext) +} + +func (s *PrimaryContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *PrimaryContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +type CreateListContext struct { + PrimaryContext + op antlr.Token + elems IListInitContext +} + +func NewCreateListContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *CreateListContext { + var p = new(CreateListContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *CreateListContext) GetOp() antlr.Token { return s.op } + +func (s *CreateListContext) SetOp(v antlr.Token) { s.op = v } + +func (s *CreateListContext) GetElems() IListInitContext { return s.elems } + +func (s *CreateListContext) SetElems(v IListInitContext) { s.elems = v } + +func (s *CreateListContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *CreateListContext) RPRACKET() antlr.TerminalNode { + return s.GetToken(CELParserRPRACKET, 0) +} + +func (s *CreateListContext) LBRACKET() antlr.TerminalNode { + return s.GetToken(CELParserLBRACKET, 0) +} + +func (s *CreateListContext) COMMA() antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, 0) +} + +func (s *CreateListContext) ListInit() IListInitContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IListInitContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IListInitContext) +} + +func (s *CreateListContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterCreateList(s) + } +} + +func (s *CreateListContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitCreateList(s) + } +} + +func (s *CreateListContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitCreateList(s) + + default: + return t.VisitChildren(s) + } +} + +type IdentContext struct { + PrimaryContext + leadingDot antlr.Token + id antlr.Token +} + +func NewIdentContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *IdentContext { + var p = new(IdentContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *IdentContext) GetLeadingDot() antlr.Token { return s.leadingDot } + +func (s *IdentContext) GetId() antlr.Token { return s.id } + +func (s *IdentContext) SetLeadingDot(v antlr.Token) { s.leadingDot = v } + +func (s *IdentContext) SetId(v antlr.Token) { s.id = v } + +func (s *IdentContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *IdentContext) IDENTIFIER() antlr.TerminalNode { + return s.GetToken(CELParserIDENTIFIER, 0) +} + +func (s *IdentContext) DOT() antlr.TerminalNode { + return s.GetToken(CELParserDOT, 0) +} + +func (s *IdentContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterIdent(s) + } +} + +func (s *IdentContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitIdent(s) + } +} + +func (s *IdentContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitIdent(s) + + default: + return t.VisitChildren(s) + } +} + +type CreateStructContext struct { + PrimaryContext + op antlr.Token + entries IMapInitializerListContext +} + +func NewCreateStructContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *CreateStructContext { + var p = new(CreateStructContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *CreateStructContext) GetOp() antlr.Token { return s.op } + +func (s *CreateStructContext) SetOp(v antlr.Token) { s.op = v } + +func (s *CreateStructContext) GetEntries() IMapInitializerListContext { return s.entries } + +func (s *CreateStructContext) SetEntries(v IMapInitializerListContext) { s.entries = v } + +func (s *CreateStructContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *CreateStructContext) RBRACE() antlr.TerminalNode { + return s.GetToken(CELParserRBRACE, 0) +} + +func (s *CreateStructContext) LBRACE() antlr.TerminalNode { + return s.GetToken(CELParserLBRACE, 0) +} + +func (s *CreateStructContext) COMMA() antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, 0) +} + +func (s *CreateStructContext) MapInitializerList() IMapInitializerListContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IMapInitializerListContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IMapInitializerListContext) +} + +func (s *CreateStructContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterCreateStruct(s) + } +} + +func (s *CreateStructContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitCreateStruct(s) + } +} + +func (s *CreateStructContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitCreateStruct(s) + + default: + return t.VisitChildren(s) + } +} + +type ConstantLiteralContext struct { + PrimaryContext +} + +func NewConstantLiteralContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *ConstantLiteralContext { + var p = new(ConstantLiteralContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *ConstantLiteralContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *ConstantLiteralContext) Literal() ILiteralContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(ILiteralContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(ILiteralContext) +} + +func (s *ConstantLiteralContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterConstantLiteral(s) + } +} + +func (s *ConstantLiteralContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitConstantLiteral(s) + } +} + +func (s *ConstantLiteralContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitConstantLiteral(s) + + default: + return t.VisitChildren(s) + } +} + +type NestedContext struct { + PrimaryContext + e IExprContext +} + +func NewNestedContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *NestedContext { + var p = new(NestedContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *NestedContext) GetE() IExprContext { return s.e } + +func (s *NestedContext) SetE(v IExprContext) { s.e = v } + +func (s *NestedContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *NestedContext) LPAREN() antlr.TerminalNode { + return s.GetToken(CELParserLPAREN, 0) +} + +func (s *NestedContext) RPAREN() antlr.TerminalNode { + return s.GetToken(CELParserRPAREN, 0) +} + +func (s *NestedContext) Expr() IExprContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *NestedContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterNested(s) + } +} + +func (s *NestedContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitNested(s) + } +} + +func (s *NestedContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitNested(s) + + default: + return t.VisitChildren(s) + } +} + +type CreateMessageContext struct { + PrimaryContext + leadingDot antlr.Token + _IDENTIFIER antlr.Token + ids []antlr.Token + s16 antlr.Token + ops []antlr.Token + op antlr.Token + entries IFieldInitializerListContext +} + +func NewCreateMessageContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *CreateMessageContext { + var p = new(CreateMessageContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *CreateMessageContext) GetLeadingDot() antlr.Token { return s.leadingDot } + +func (s *CreateMessageContext) Get_IDENTIFIER() antlr.Token { return s._IDENTIFIER } + +func (s *CreateMessageContext) GetS16() antlr.Token { return s.s16 } + +func (s *CreateMessageContext) GetOp() antlr.Token { return s.op } + +func (s *CreateMessageContext) SetLeadingDot(v antlr.Token) { s.leadingDot = v } + +func (s *CreateMessageContext) Set_IDENTIFIER(v antlr.Token) { s._IDENTIFIER = v } + +func (s *CreateMessageContext) SetS16(v antlr.Token) { s.s16 = v } + +func (s *CreateMessageContext) SetOp(v antlr.Token) { s.op = v } + +func (s *CreateMessageContext) GetIds() []antlr.Token { return s.ids } + +func (s *CreateMessageContext) GetOps() []antlr.Token { return s.ops } + +func (s *CreateMessageContext) SetIds(v []antlr.Token) { s.ids = v } + +func (s *CreateMessageContext) SetOps(v []antlr.Token) { s.ops = v } + +func (s *CreateMessageContext) GetEntries() IFieldInitializerListContext { return s.entries } + +func (s *CreateMessageContext) SetEntries(v IFieldInitializerListContext) { s.entries = v } + +func (s *CreateMessageContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *CreateMessageContext) RBRACE() antlr.TerminalNode { + return s.GetToken(CELParserRBRACE, 0) +} + +func (s *CreateMessageContext) AllIDENTIFIER() []antlr.TerminalNode { + return s.GetTokens(CELParserIDENTIFIER) +} + +func (s *CreateMessageContext) IDENTIFIER(i int) antlr.TerminalNode { + return s.GetToken(CELParserIDENTIFIER, i) +} + +func (s *CreateMessageContext) LBRACE() antlr.TerminalNode { + return s.GetToken(CELParserLBRACE, 0) +} + +func (s *CreateMessageContext) COMMA() antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, 0) +} + +func (s *CreateMessageContext) AllDOT() []antlr.TerminalNode { + return s.GetTokens(CELParserDOT) +} + +func (s *CreateMessageContext) DOT(i int) antlr.TerminalNode { + return s.GetToken(CELParserDOT, i) +} + +func (s *CreateMessageContext) FieldInitializerList() IFieldInitializerListContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IFieldInitializerListContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IFieldInitializerListContext) +} + +func (s *CreateMessageContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterCreateMessage(s) + } +} + +func (s *CreateMessageContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitCreateMessage(s) + } +} + +func (s *CreateMessageContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitCreateMessage(s) + + default: + return t.VisitChildren(s) + } +} + +type GlobalCallContext struct { + PrimaryContext + leadingDot antlr.Token + id antlr.Token + op antlr.Token + args IExprListContext +} + +func NewGlobalCallContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *GlobalCallContext { + var p = new(GlobalCallContext) + + InitEmptyPrimaryContext(&p.PrimaryContext) + p.parser = parser + p.CopyAll(ctx.(*PrimaryContext)) + + return p +} + +func (s *GlobalCallContext) GetLeadingDot() antlr.Token { return s.leadingDot } + +func (s *GlobalCallContext) GetId() antlr.Token { return s.id } + +func (s *GlobalCallContext) GetOp() antlr.Token { return s.op } + +func (s *GlobalCallContext) SetLeadingDot(v antlr.Token) { s.leadingDot = v } + +func (s *GlobalCallContext) SetId(v antlr.Token) { s.id = v } + +func (s *GlobalCallContext) SetOp(v antlr.Token) { s.op = v } + +func (s *GlobalCallContext) GetArgs() IExprListContext { return s.args } + +func (s *GlobalCallContext) SetArgs(v IExprListContext) { s.args = v } + +func (s *GlobalCallContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *GlobalCallContext) IDENTIFIER() antlr.TerminalNode { + return s.GetToken(CELParserIDENTIFIER, 0) +} + +func (s *GlobalCallContext) RPAREN() antlr.TerminalNode { + return s.GetToken(CELParserRPAREN, 0) +} + +func (s *GlobalCallContext) LPAREN() antlr.TerminalNode { + return s.GetToken(CELParserLPAREN, 0) +} + +func (s *GlobalCallContext) DOT() antlr.TerminalNode { + return s.GetToken(CELParserDOT, 0) +} + +func (s *GlobalCallContext) ExprList() IExprListContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprListContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprListContext) +} + +func (s *GlobalCallContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterGlobalCall(s) + } +} + +func (s *GlobalCallContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitGlobalCall(s) + } +} + +func (s *GlobalCallContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitGlobalCall(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Primary() (localctx IPrimaryContext) { + localctx = NewPrimaryContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 16, CELParserRULE_primary) + var _la int + + p.SetState(184) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + + switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 25, p.GetParserRuleContext()) { + case 1: + localctx = NewIdentContext(p, localctx) + p.EnterOuterAlt(localctx, 1) + p.SetState(132) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserDOT { + { + p.SetState(131) + + var _m = p.Match(CELParserDOT) + + localctx.(*IdentContext).leadingDot = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(134) + + var _m = p.Match(CELParserIDENTIFIER) + + localctx.(*IdentContext).id = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 2: + localctx = NewGlobalCallContext(p, localctx) + p.EnterOuterAlt(localctx, 2) + p.SetState(136) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserDOT { + { + p.SetState(135) + + var _m = p.Match(CELParserDOT) + + localctx.(*GlobalCallContext).leadingDot = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(138) + + var _m = p.Match(CELParserIDENTIFIER) + + localctx.(*GlobalCallContext).id = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + { + p.SetState(139) + + var _m = p.Match(CELParserLPAREN) + + localctx.(*GlobalCallContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(141) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&135762105344) != 0 { + { + p.SetState(140) + + var _x = p.ExprList() + + localctx.(*GlobalCallContext).args = _x + } + + } + { + p.SetState(143) + p.Match(CELParserRPAREN) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 3: + localctx = NewNestedContext(p, localctx) + p.EnterOuterAlt(localctx, 3) + { + p.SetState(144) + p.Match(CELParserLPAREN) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(145) + + var _x = p.Expr() + + localctx.(*NestedContext).e = _x + } + { + p.SetState(146) + p.Match(CELParserRPAREN) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 4: + localctx = NewCreateListContext(p, localctx) + p.EnterOuterAlt(localctx, 4) + { + p.SetState(148) + + var _m = p.Match(CELParserLBRACKET) + + localctx.(*CreateListContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(150) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&135763153920) != 0 { + { + p.SetState(149) + + var _x = p.ListInit() + + localctx.(*CreateListContext).elems = _x + } + + } + p.SetState(153) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserCOMMA { + { + p.SetState(152) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(155) + p.Match(CELParserRPRACKET) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 5: + localctx = NewCreateStructContext(p, localctx) + p.EnterOuterAlt(localctx, 5) + { + p.SetState(156) + + var _m = p.Match(CELParserLBRACE) + + localctx.(*CreateStructContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(158) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&135763153920) != 0 { + { + p.SetState(157) + + var _x = p.MapInitializerList() + + localctx.(*CreateStructContext).entries = _x + } + + } + p.SetState(161) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserCOMMA { + { + p.SetState(160) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(163) + p.Match(CELParserRBRACE) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 6: + localctx = NewCreateMessageContext(p, localctx) + p.EnterOuterAlt(localctx, 6) + p.SetState(165) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserDOT { + { + p.SetState(164) + + var _m = p.Match(CELParserDOT) + + localctx.(*CreateMessageContext).leadingDot = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(167) + + var _m = p.Match(CELParserIDENTIFIER) + + localctx.(*CreateMessageContext)._IDENTIFIER = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*CreateMessageContext).ids = append(localctx.(*CreateMessageContext).ids, localctx.(*CreateMessageContext)._IDENTIFIER) + p.SetState(172) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + for _la == CELParserDOT { + { + p.SetState(168) + + var _m = p.Match(CELParserDOT) + + localctx.(*CreateMessageContext).s16 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*CreateMessageContext).ops = append(localctx.(*CreateMessageContext).ops, localctx.(*CreateMessageContext).s16) + { + p.SetState(169) + + var _m = p.Match(CELParserIDENTIFIER) + + localctx.(*CreateMessageContext)._IDENTIFIER = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*CreateMessageContext).ids = append(localctx.(*CreateMessageContext).ids, localctx.(*CreateMessageContext)._IDENTIFIER) + + p.SetState(174) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + } + { + p.SetState(175) + + var _m = p.Match(CELParserLBRACE) + + localctx.(*CreateMessageContext).op = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + p.SetState(177) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&206159478784) != 0 { + { + p.SetState(176) + + var _x = p.FieldInitializerList() + + localctx.(*CreateMessageContext).entries = _x + } + + } + p.SetState(180) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserCOMMA { + { + p.SetState(179) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(182) + p.Match(CELParserRBRACE) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 7: + localctx = NewConstantLiteralContext(p, localctx) + p.EnterOuterAlt(localctx, 7) + { + p.SetState(183) + p.Literal() + } + + case antlr.ATNInvalidAltNumber: + goto errorExit + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IExprListContext is an interface to support dynamic dispatch. +type IExprListContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // Get_expr returns the _expr rule contexts. + Get_expr() IExprContext + + // Set_expr sets the _expr rule contexts. + Set_expr(IExprContext) + + // GetE returns the e rule context list. + GetE() []IExprContext + + // SetE sets the e rule context list. + SetE([]IExprContext) + + // Getter signatures + AllExpr() []IExprContext + Expr(i int) IExprContext + AllCOMMA() []antlr.TerminalNode + COMMA(i int) antlr.TerminalNode + + // IsExprListContext differentiates from other interfaces. + IsExprListContext() +} + +type ExprListContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + _expr IExprContext + e []IExprContext +} + +func NewEmptyExprListContext() *ExprListContext { + var p = new(ExprListContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_exprList + return p +} + +func InitEmptyExprListContext(p *ExprListContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_exprList +} + +func (*ExprListContext) IsExprListContext() {} + +func NewExprListContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ExprListContext { + var p = new(ExprListContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_exprList + + return p +} + +func (s *ExprListContext) GetParser() antlr.Parser { return s.parser } + +func (s *ExprListContext) Get_expr() IExprContext { return s._expr } + +func (s *ExprListContext) Set_expr(v IExprContext) { s._expr = v } + +func (s *ExprListContext) GetE() []IExprContext { return s.e } + +func (s *ExprListContext) SetE(v []IExprContext) { s.e = v } + +func (s *ExprListContext) AllExpr() []IExprContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IExprContext); ok { + len++ + } + } + + tst := make([]IExprContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IExprContext); ok { + tst[i] = t.(IExprContext) + i++ + } + } + + return tst +} + +func (s *ExprListContext) Expr(i int) IExprContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *ExprListContext) AllCOMMA() []antlr.TerminalNode { + return s.GetTokens(CELParserCOMMA) +} + +func (s *ExprListContext) COMMA(i int) antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, i) +} + +func (s *ExprListContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *ExprListContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *ExprListContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterExprList(s) + } +} + +func (s *ExprListContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitExprList(s) + } +} + +func (s *ExprListContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitExprList(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) ExprList() (localctx IExprListContext) { + localctx = NewExprListContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 18, CELParserRULE_exprList) + var _la int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(186) + + var _x = p.Expr() + + localctx.(*ExprListContext)._expr = _x + } + localctx.(*ExprListContext).e = append(localctx.(*ExprListContext).e, localctx.(*ExprListContext)._expr) + p.SetState(191) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + for _la == CELParserCOMMA { + { + p.SetState(187) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(188) + + var _x = p.Expr() + + localctx.(*ExprListContext)._expr = _x + } + localctx.(*ExprListContext).e = append(localctx.(*ExprListContext).e, localctx.(*ExprListContext)._expr) + + p.SetState(193) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IListInitContext is an interface to support dynamic dispatch. +type IListInitContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // Get_optExpr returns the _optExpr rule contexts. + Get_optExpr() IOptExprContext + + // Set_optExpr sets the _optExpr rule contexts. + Set_optExpr(IOptExprContext) + + // GetElems returns the elems rule context list. + GetElems() []IOptExprContext + + // SetElems sets the elems rule context list. + SetElems([]IOptExprContext) + + // Getter signatures + AllOptExpr() []IOptExprContext + OptExpr(i int) IOptExprContext + AllCOMMA() []antlr.TerminalNode + COMMA(i int) antlr.TerminalNode + + // IsListInitContext differentiates from other interfaces. + IsListInitContext() +} + +type ListInitContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + _optExpr IOptExprContext + elems []IOptExprContext +} + +func NewEmptyListInitContext() *ListInitContext { + var p = new(ListInitContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_listInit + return p +} + +func InitEmptyListInitContext(p *ListInitContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_listInit +} + +func (*ListInitContext) IsListInitContext() {} + +func NewListInitContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *ListInitContext { + var p = new(ListInitContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_listInit + + return p +} + +func (s *ListInitContext) GetParser() antlr.Parser { return s.parser } + +func (s *ListInitContext) Get_optExpr() IOptExprContext { return s._optExpr } + +func (s *ListInitContext) Set_optExpr(v IOptExprContext) { s._optExpr = v } + +func (s *ListInitContext) GetElems() []IOptExprContext { return s.elems } + +func (s *ListInitContext) SetElems(v []IOptExprContext) { s.elems = v } + +func (s *ListInitContext) AllOptExpr() []IOptExprContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IOptExprContext); ok { + len++ + } + } + + tst := make([]IOptExprContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IOptExprContext); ok { + tst[i] = t.(IOptExprContext) + i++ + } + } + + return tst +} + +func (s *ListInitContext) OptExpr(i int) IOptExprContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IOptExprContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IOptExprContext) +} + +func (s *ListInitContext) AllCOMMA() []antlr.TerminalNode { + return s.GetTokens(CELParserCOMMA) +} + +func (s *ListInitContext) COMMA(i int) antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, i) +} + +func (s *ListInitContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *ListInitContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *ListInitContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterListInit(s) + } +} + +func (s *ListInitContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitListInit(s) + } +} + +func (s *ListInitContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitListInit(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) ListInit() (localctx IListInitContext) { + localctx = NewListInitContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 20, CELParserRULE_listInit) + var _alt int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(194) + + var _x = p.OptExpr() + + localctx.(*ListInitContext)._optExpr = _x + } + localctx.(*ListInitContext).elems = append(localctx.(*ListInitContext).elems, localctx.(*ListInitContext)._optExpr) + p.SetState(199) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 27, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + for _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + if _alt == 1 { + { + p.SetState(195) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(196) + + var _x = p.OptExpr() + + localctx.(*ListInitContext)._optExpr = _x + } + localctx.(*ListInitContext).elems = append(localctx.(*ListInitContext).elems, localctx.(*ListInitContext)._optExpr) + + } + p.SetState(201) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 27, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IFieldInitializerListContext is an interface to support dynamic dispatch. +type IFieldInitializerListContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetS21 returns the s21 token. + GetS21() antlr.Token + + // SetS21 sets the s21 token. + SetS21(antlr.Token) + + // GetCols returns the cols token list. + GetCols() []antlr.Token + + // SetCols sets the cols token list. + SetCols([]antlr.Token) + + // Get_optField returns the _optField rule contexts. + Get_optField() IOptFieldContext + + // Get_expr returns the _expr rule contexts. + Get_expr() IExprContext + + // Set_optField sets the _optField rule contexts. + Set_optField(IOptFieldContext) + + // Set_expr sets the _expr rule contexts. + Set_expr(IExprContext) + + // GetFields returns the fields rule context list. + GetFields() []IOptFieldContext + + // GetValues returns the values rule context list. + GetValues() []IExprContext + + // SetFields sets the fields rule context list. + SetFields([]IOptFieldContext) + + // SetValues sets the values rule context list. + SetValues([]IExprContext) + + // Getter signatures + AllOptField() []IOptFieldContext + OptField(i int) IOptFieldContext + AllCOLON() []antlr.TerminalNode + COLON(i int) antlr.TerminalNode + AllExpr() []IExprContext + Expr(i int) IExprContext + AllCOMMA() []antlr.TerminalNode + COMMA(i int) antlr.TerminalNode + + // IsFieldInitializerListContext differentiates from other interfaces. + IsFieldInitializerListContext() +} + +type FieldInitializerListContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + _optField IOptFieldContext + fields []IOptFieldContext + s21 antlr.Token + cols []antlr.Token + _expr IExprContext + values []IExprContext +} + +func NewEmptyFieldInitializerListContext() *FieldInitializerListContext { + var p = new(FieldInitializerListContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_fieldInitializerList + return p +} + +func InitEmptyFieldInitializerListContext(p *FieldInitializerListContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_fieldInitializerList +} + +func (*FieldInitializerListContext) IsFieldInitializerListContext() {} + +func NewFieldInitializerListContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *FieldInitializerListContext { + var p = new(FieldInitializerListContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_fieldInitializerList + + return p +} + +func (s *FieldInitializerListContext) GetParser() antlr.Parser { return s.parser } + +func (s *FieldInitializerListContext) GetS21() antlr.Token { return s.s21 } + +func (s *FieldInitializerListContext) SetS21(v antlr.Token) { s.s21 = v } + +func (s *FieldInitializerListContext) GetCols() []antlr.Token { return s.cols } + +func (s *FieldInitializerListContext) SetCols(v []antlr.Token) { s.cols = v } + +func (s *FieldInitializerListContext) Get_optField() IOptFieldContext { return s._optField } + +func (s *FieldInitializerListContext) Get_expr() IExprContext { return s._expr } + +func (s *FieldInitializerListContext) Set_optField(v IOptFieldContext) { s._optField = v } + +func (s *FieldInitializerListContext) Set_expr(v IExprContext) { s._expr = v } + +func (s *FieldInitializerListContext) GetFields() []IOptFieldContext { return s.fields } + +func (s *FieldInitializerListContext) GetValues() []IExprContext { return s.values } + +func (s *FieldInitializerListContext) SetFields(v []IOptFieldContext) { s.fields = v } + +func (s *FieldInitializerListContext) SetValues(v []IExprContext) { s.values = v } + +func (s *FieldInitializerListContext) AllOptField() []IOptFieldContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IOptFieldContext); ok { + len++ + } + } + + tst := make([]IOptFieldContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IOptFieldContext); ok { + tst[i] = t.(IOptFieldContext) + i++ + } + } + + return tst +} + +func (s *FieldInitializerListContext) OptField(i int) IOptFieldContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IOptFieldContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IOptFieldContext) +} + +func (s *FieldInitializerListContext) AllCOLON() []antlr.TerminalNode { + return s.GetTokens(CELParserCOLON) +} + +func (s *FieldInitializerListContext) COLON(i int) antlr.TerminalNode { + return s.GetToken(CELParserCOLON, i) +} + +func (s *FieldInitializerListContext) AllExpr() []IExprContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IExprContext); ok { + len++ + } + } + + tst := make([]IExprContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IExprContext); ok { + tst[i] = t.(IExprContext) + i++ + } + } + + return tst +} + +func (s *FieldInitializerListContext) Expr(i int) IExprContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *FieldInitializerListContext) AllCOMMA() []antlr.TerminalNode { + return s.GetTokens(CELParserCOMMA) +} + +func (s *FieldInitializerListContext) COMMA(i int) antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, i) +} + +func (s *FieldInitializerListContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *FieldInitializerListContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *FieldInitializerListContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterFieldInitializerList(s) + } +} + +func (s *FieldInitializerListContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitFieldInitializerList(s) + } +} + +func (s *FieldInitializerListContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitFieldInitializerList(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) FieldInitializerList() (localctx IFieldInitializerListContext) { + localctx = NewFieldInitializerListContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 22, CELParserRULE_fieldInitializerList) + var _alt int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(202) + + var _x = p.OptField() + + localctx.(*FieldInitializerListContext)._optField = _x + } + localctx.(*FieldInitializerListContext).fields = append(localctx.(*FieldInitializerListContext).fields, localctx.(*FieldInitializerListContext)._optField) + { + p.SetState(203) + + var _m = p.Match(CELParserCOLON) + + localctx.(*FieldInitializerListContext).s21 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*FieldInitializerListContext).cols = append(localctx.(*FieldInitializerListContext).cols, localctx.(*FieldInitializerListContext).s21) + { + p.SetState(204) + + var _x = p.Expr() + + localctx.(*FieldInitializerListContext)._expr = _x + } + localctx.(*FieldInitializerListContext).values = append(localctx.(*FieldInitializerListContext).values, localctx.(*FieldInitializerListContext)._expr) + p.SetState(212) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 28, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + for _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + if _alt == 1 { + { + p.SetState(205) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(206) + + var _x = p.OptField() + + localctx.(*FieldInitializerListContext)._optField = _x + } + localctx.(*FieldInitializerListContext).fields = append(localctx.(*FieldInitializerListContext).fields, localctx.(*FieldInitializerListContext)._optField) + { + p.SetState(207) + + var _m = p.Match(CELParserCOLON) + + localctx.(*FieldInitializerListContext).s21 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*FieldInitializerListContext).cols = append(localctx.(*FieldInitializerListContext).cols, localctx.(*FieldInitializerListContext).s21) + { + p.SetState(208) + + var _x = p.Expr() + + localctx.(*FieldInitializerListContext)._expr = _x + } + localctx.(*FieldInitializerListContext).values = append(localctx.(*FieldInitializerListContext).values, localctx.(*FieldInitializerListContext)._expr) + + } + p.SetState(214) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 28, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IOptFieldContext is an interface to support dynamic dispatch. +type IOptFieldContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetOpt returns the opt token. + GetOpt() antlr.Token + + // SetOpt sets the opt token. + SetOpt(antlr.Token) + + // Getter signatures + EscapeIdent() IEscapeIdentContext + QUESTIONMARK() antlr.TerminalNode + + // IsOptFieldContext differentiates from other interfaces. + IsOptFieldContext() +} + +type OptFieldContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + opt antlr.Token +} + +func NewEmptyOptFieldContext() *OptFieldContext { + var p = new(OptFieldContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_optField + return p +} + +func InitEmptyOptFieldContext(p *OptFieldContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_optField +} + +func (*OptFieldContext) IsOptFieldContext() {} + +func NewOptFieldContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *OptFieldContext { + var p = new(OptFieldContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_optField + + return p +} + +func (s *OptFieldContext) GetParser() antlr.Parser { return s.parser } + +func (s *OptFieldContext) GetOpt() antlr.Token { return s.opt } + +func (s *OptFieldContext) SetOpt(v antlr.Token) { s.opt = v } + +func (s *OptFieldContext) EscapeIdent() IEscapeIdentContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IEscapeIdentContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IEscapeIdentContext) +} + +func (s *OptFieldContext) QUESTIONMARK() antlr.TerminalNode { + return s.GetToken(CELParserQUESTIONMARK, 0) +} + +func (s *OptFieldContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *OptFieldContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *OptFieldContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterOptField(s) + } +} + +func (s *OptFieldContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitOptField(s) + } +} + +func (s *OptFieldContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitOptField(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) OptField() (localctx IOptFieldContext) { + localctx = NewOptFieldContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 24, CELParserRULE_optField) + var _la int + + p.EnterOuterAlt(localctx, 1) + p.SetState(216) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserQUESTIONMARK { + { + p.SetState(215) + + var _m = p.Match(CELParserQUESTIONMARK) + + localctx.(*OptFieldContext).opt = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(218) + p.EscapeIdent() + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IMapInitializerListContext is an interface to support dynamic dispatch. +type IMapInitializerListContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetS21 returns the s21 token. + GetS21() antlr.Token + + // SetS21 sets the s21 token. + SetS21(antlr.Token) + + // GetCols returns the cols token list. + GetCols() []antlr.Token + + // SetCols sets the cols token list. + SetCols([]antlr.Token) + + // Get_optExpr returns the _optExpr rule contexts. + Get_optExpr() IOptExprContext + + // Get_expr returns the _expr rule contexts. + Get_expr() IExprContext + + // Set_optExpr sets the _optExpr rule contexts. + Set_optExpr(IOptExprContext) + + // Set_expr sets the _expr rule contexts. + Set_expr(IExprContext) + + // GetKeys returns the keys rule context list. + GetKeys() []IOptExprContext + + // GetValues returns the values rule context list. + GetValues() []IExprContext + + // SetKeys sets the keys rule context list. + SetKeys([]IOptExprContext) + + // SetValues sets the values rule context list. + SetValues([]IExprContext) + + // Getter signatures + AllOptExpr() []IOptExprContext + OptExpr(i int) IOptExprContext + AllCOLON() []antlr.TerminalNode + COLON(i int) antlr.TerminalNode + AllExpr() []IExprContext + Expr(i int) IExprContext + AllCOMMA() []antlr.TerminalNode + COMMA(i int) antlr.TerminalNode + + // IsMapInitializerListContext differentiates from other interfaces. + IsMapInitializerListContext() +} + +type MapInitializerListContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + _optExpr IOptExprContext + keys []IOptExprContext + s21 antlr.Token + cols []antlr.Token + _expr IExprContext + values []IExprContext +} + +func NewEmptyMapInitializerListContext() *MapInitializerListContext { + var p = new(MapInitializerListContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_mapInitializerList + return p +} + +func InitEmptyMapInitializerListContext(p *MapInitializerListContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_mapInitializerList +} + +func (*MapInitializerListContext) IsMapInitializerListContext() {} + +func NewMapInitializerListContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *MapInitializerListContext { + var p = new(MapInitializerListContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_mapInitializerList + + return p +} + +func (s *MapInitializerListContext) GetParser() antlr.Parser { return s.parser } + +func (s *MapInitializerListContext) GetS21() antlr.Token { return s.s21 } + +func (s *MapInitializerListContext) SetS21(v antlr.Token) { s.s21 = v } + +func (s *MapInitializerListContext) GetCols() []antlr.Token { return s.cols } + +func (s *MapInitializerListContext) SetCols(v []antlr.Token) { s.cols = v } + +func (s *MapInitializerListContext) Get_optExpr() IOptExprContext { return s._optExpr } + +func (s *MapInitializerListContext) Get_expr() IExprContext { return s._expr } + +func (s *MapInitializerListContext) Set_optExpr(v IOptExprContext) { s._optExpr = v } + +func (s *MapInitializerListContext) Set_expr(v IExprContext) { s._expr = v } + +func (s *MapInitializerListContext) GetKeys() []IOptExprContext { return s.keys } + +func (s *MapInitializerListContext) GetValues() []IExprContext { return s.values } + +func (s *MapInitializerListContext) SetKeys(v []IOptExprContext) { s.keys = v } + +func (s *MapInitializerListContext) SetValues(v []IExprContext) { s.values = v } + +func (s *MapInitializerListContext) AllOptExpr() []IOptExprContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IOptExprContext); ok { + len++ + } + } + + tst := make([]IOptExprContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IOptExprContext); ok { + tst[i] = t.(IOptExprContext) + i++ + } + } + + return tst +} + +func (s *MapInitializerListContext) OptExpr(i int) IOptExprContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IOptExprContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IOptExprContext) +} + +func (s *MapInitializerListContext) AllCOLON() []antlr.TerminalNode { + return s.GetTokens(CELParserCOLON) +} + +func (s *MapInitializerListContext) COLON(i int) antlr.TerminalNode { + return s.GetToken(CELParserCOLON, i) +} + +func (s *MapInitializerListContext) AllExpr() []IExprContext { + children := s.GetChildren() + len := 0 + for _, ctx := range children { + if _, ok := ctx.(IExprContext); ok { + len++ + } + } + + tst := make([]IExprContext, len) + i := 0 + for _, ctx := range children { + if t, ok := ctx.(IExprContext); ok { + tst[i] = t.(IExprContext) + i++ + } + } + + return tst +} + +func (s *MapInitializerListContext) Expr(i int) IExprContext { + var t antlr.RuleContext + j := 0 + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + if j == i { + t = ctx.(antlr.RuleContext) + break + } + j++ + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *MapInitializerListContext) AllCOMMA() []antlr.TerminalNode { + return s.GetTokens(CELParserCOMMA) +} + +func (s *MapInitializerListContext) COMMA(i int) antlr.TerminalNode { + return s.GetToken(CELParserCOMMA, i) +} + +func (s *MapInitializerListContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *MapInitializerListContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *MapInitializerListContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterMapInitializerList(s) + } +} + +func (s *MapInitializerListContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitMapInitializerList(s) + } +} + +func (s *MapInitializerListContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitMapInitializerList(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) MapInitializerList() (localctx IMapInitializerListContext) { + localctx = NewMapInitializerListContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 26, CELParserRULE_mapInitializerList) + var _alt int + + p.EnterOuterAlt(localctx, 1) + { + p.SetState(220) + + var _x = p.OptExpr() + + localctx.(*MapInitializerListContext)._optExpr = _x + } + localctx.(*MapInitializerListContext).keys = append(localctx.(*MapInitializerListContext).keys, localctx.(*MapInitializerListContext)._optExpr) + { + p.SetState(221) + + var _m = p.Match(CELParserCOLON) + + localctx.(*MapInitializerListContext).s21 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*MapInitializerListContext).cols = append(localctx.(*MapInitializerListContext).cols, localctx.(*MapInitializerListContext).s21) + { + p.SetState(222) + + var _x = p.Expr() + + localctx.(*MapInitializerListContext)._expr = _x + } + localctx.(*MapInitializerListContext).values = append(localctx.(*MapInitializerListContext).values, localctx.(*MapInitializerListContext)._expr) + p.SetState(230) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 30, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + for _alt != 2 && _alt != antlr.ATNInvalidAltNumber { + if _alt == 1 { + { + p.SetState(223) + p.Match(CELParserCOMMA) + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + { + p.SetState(224) + + var _x = p.OptExpr() + + localctx.(*MapInitializerListContext)._optExpr = _x + } + localctx.(*MapInitializerListContext).keys = append(localctx.(*MapInitializerListContext).keys, localctx.(*MapInitializerListContext)._optExpr) + { + p.SetState(225) + + var _m = p.Match(CELParserCOLON) + + localctx.(*MapInitializerListContext).s21 = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + localctx.(*MapInitializerListContext).cols = append(localctx.(*MapInitializerListContext).cols, localctx.(*MapInitializerListContext).s21) + { + p.SetState(226) + + var _x = p.Expr() + + localctx.(*MapInitializerListContext)._expr = _x + } + localctx.(*MapInitializerListContext).values = append(localctx.(*MapInitializerListContext).values, localctx.(*MapInitializerListContext)._expr) + + } + p.SetState(232) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 30, p.GetParserRuleContext()) + if p.HasError() { + goto errorExit + } + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IEscapeIdentContext is an interface to support dynamic dispatch. +type IEscapeIdentContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + // IsEscapeIdentContext differentiates from other interfaces. + IsEscapeIdentContext() +} + +type EscapeIdentContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser +} + +func NewEmptyEscapeIdentContext() *EscapeIdentContext { + var p = new(EscapeIdentContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_escapeIdent + return p +} + +func InitEmptyEscapeIdentContext(p *EscapeIdentContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_escapeIdent +} + +func (*EscapeIdentContext) IsEscapeIdentContext() {} + +func NewEscapeIdentContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *EscapeIdentContext { + var p = new(EscapeIdentContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_escapeIdent + + return p +} + +func (s *EscapeIdentContext) GetParser() antlr.Parser { return s.parser } + +func (s *EscapeIdentContext) CopyAll(ctx *EscapeIdentContext) { + s.CopyFrom(&ctx.BaseParserRuleContext) +} + +func (s *EscapeIdentContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *EscapeIdentContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +type EscapedIdentifierContext struct { + EscapeIdentContext + id antlr.Token +} + +func NewEscapedIdentifierContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *EscapedIdentifierContext { + var p = new(EscapedIdentifierContext) + + InitEmptyEscapeIdentContext(&p.EscapeIdentContext) + p.parser = parser + p.CopyAll(ctx.(*EscapeIdentContext)) + + return p +} + +func (s *EscapedIdentifierContext) GetId() antlr.Token { return s.id } + +func (s *EscapedIdentifierContext) SetId(v antlr.Token) { s.id = v } + +func (s *EscapedIdentifierContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *EscapedIdentifierContext) ESC_IDENTIFIER() antlr.TerminalNode { + return s.GetToken(CELParserESC_IDENTIFIER, 0) +} + +func (s *EscapedIdentifierContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterEscapedIdentifier(s) + } +} + +func (s *EscapedIdentifierContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitEscapedIdentifier(s) + } +} + +func (s *EscapedIdentifierContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitEscapedIdentifier(s) + + default: + return t.VisitChildren(s) + } +} + +type SimpleIdentifierContext struct { + EscapeIdentContext + id antlr.Token +} + +func NewSimpleIdentifierContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *SimpleIdentifierContext { + var p = new(SimpleIdentifierContext) + + InitEmptyEscapeIdentContext(&p.EscapeIdentContext) + p.parser = parser + p.CopyAll(ctx.(*EscapeIdentContext)) + + return p +} + +func (s *SimpleIdentifierContext) GetId() antlr.Token { return s.id } + +func (s *SimpleIdentifierContext) SetId(v antlr.Token) { s.id = v } + +func (s *SimpleIdentifierContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *SimpleIdentifierContext) IDENTIFIER() antlr.TerminalNode { + return s.GetToken(CELParserIDENTIFIER, 0) +} + +func (s *SimpleIdentifierContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterSimpleIdentifier(s) + } +} + +func (s *SimpleIdentifierContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitSimpleIdentifier(s) + } +} + +func (s *SimpleIdentifierContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitSimpleIdentifier(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) EscapeIdent() (localctx IEscapeIdentContext) { + localctx = NewEscapeIdentContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 28, CELParserRULE_escapeIdent) + p.SetState(235) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + + switch p.GetTokenStream().LA(1) { + case CELParserIDENTIFIER: + localctx = NewSimpleIdentifierContext(p, localctx) + p.EnterOuterAlt(localctx, 1) + { + p.SetState(233) + + var _m = p.Match(CELParserIDENTIFIER) + + localctx.(*SimpleIdentifierContext).id = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case CELParserESC_IDENTIFIER: + localctx = NewEscapedIdentifierContext(p, localctx) + p.EnterOuterAlt(localctx, 2) + { + p.SetState(234) + + var _m = p.Match(CELParserESC_IDENTIFIER) + + localctx.(*EscapedIdentifierContext).id = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + default: + p.SetError(antlr.NewNoViableAltException(p, nil, nil, nil, nil, nil)) + goto errorExit + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// IOptExprContext is an interface to support dynamic dispatch. +type IOptExprContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + + // GetOpt returns the opt token. + GetOpt() antlr.Token + + // SetOpt sets the opt token. + SetOpt(antlr.Token) + + // GetE returns the e rule contexts. + GetE() IExprContext + + // SetE sets the e rule contexts. + SetE(IExprContext) + + // Getter signatures + Expr() IExprContext + QUESTIONMARK() antlr.TerminalNode + + // IsOptExprContext differentiates from other interfaces. + IsOptExprContext() +} + +type OptExprContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser + opt antlr.Token + e IExprContext +} + +func NewEmptyOptExprContext() *OptExprContext { + var p = new(OptExprContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_optExpr + return p +} + +func InitEmptyOptExprContext(p *OptExprContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_optExpr +} + +func (*OptExprContext) IsOptExprContext() {} + +func NewOptExprContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *OptExprContext { + var p = new(OptExprContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_optExpr + + return p +} + +func (s *OptExprContext) GetParser() antlr.Parser { return s.parser } + +func (s *OptExprContext) GetOpt() antlr.Token { return s.opt } + +func (s *OptExprContext) SetOpt(v antlr.Token) { s.opt = v } + +func (s *OptExprContext) GetE() IExprContext { return s.e } + +func (s *OptExprContext) SetE(v IExprContext) { s.e = v } + +func (s *OptExprContext) Expr() IExprContext { + var t antlr.RuleContext + for _, ctx := range s.GetChildren() { + if _, ok := ctx.(IExprContext); ok { + t = ctx.(antlr.RuleContext) + break + } + } + + if t == nil { + return nil + } + + return t.(IExprContext) +} + +func (s *OptExprContext) QUESTIONMARK() antlr.TerminalNode { + return s.GetToken(CELParserQUESTIONMARK, 0) +} + +func (s *OptExprContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *OptExprContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +func (s *OptExprContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterOptExpr(s) + } +} + +func (s *OptExprContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitOptExpr(s) + } +} + +func (s *OptExprContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitOptExpr(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) OptExpr() (localctx IOptExprContext) { + localctx = NewOptExprContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 30, CELParserRULE_optExpr) + var _la int + + p.EnterOuterAlt(localctx, 1) + p.SetState(238) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserQUESTIONMARK { + { + p.SetState(237) + + var _m = p.Match(CELParserQUESTIONMARK) + + localctx.(*OptExprContext).opt = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(240) + + var _x = p.Expr() + + localctx.(*OptExprContext).e = _x + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +// ILiteralContext is an interface to support dynamic dispatch. +type ILiteralContext interface { + antlr.ParserRuleContext + + // GetParser returns the parser. + GetParser() antlr.Parser + // IsLiteralContext differentiates from other interfaces. + IsLiteralContext() +} + +type LiteralContext struct { + antlr.BaseParserRuleContext + parser antlr.Parser +} + +func NewEmptyLiteralContext() *LiteralContext { + var p = new(LiteralContext) + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_literal + return p +} + +func InitEmptyLiteralContext(p *LiteralContext) { + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1) + p.RuleIndex = CELParserRULE_literal +} + +func (*LiteralContext) IsLiteralContext() {} + +func NewLiteralContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *LiteralContext { + var p = new(LiteralContext) + + antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState) + + p.parser = parser + p.RuleIndex = CELParserRULE_literal + + return p +} + +func (s *LiteralContext) GetParser() antlr.Parser { return s.parser } + +func (s *LiteralContext) CopyAll(ctx *LiteralContext) { + s.CopyFrom(&ctx.BaseParserRuleContext) +} + +func (s *LiteralContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *LiteralContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string { + return antlr.TreesStringTree(s, ruleNames, recog) +} + +type BytesContext struct { + LiteralContext + tok antlr.Token +} + +func NewBytesContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *BytesContext { + var p = new(BytesContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *BytesContext) GetTok() antlr.Token { return s.tok } + +func (s *BytesContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *BytesContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *BytesContext) BYTES() antlr.TerminalNode { + return s.GetToken(CELParserBYTES, 0) +} + +func (s *BytesContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterBytes(s) + } +} + +func (s *BytesContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitBytes(s) + } +} + +func (s *BytesContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitBytes(s) + + default: + return t.VisitChildren(s) + } +} + +type UintContext struct { + LiteralContext + tok antlr.Token +} + +func NewUintContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *UintContext { + var p = new(UintContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *UintContext) GetTok() antlr.Token { return s.tok } + +func (s *UintContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *UintContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *UintContext) NUM_UINT() antlr.TerminalNode { + return s.GetToken(CELParserNUM_UINT, 0) +} + +func (s *UintContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterUint(s) + } +} + +func (s *UintContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitUint(s) + } +} + +func (s *UintContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitUint(s) + + default: + return t.VisitChildren(s) + } +} + +type NullContext struct { + LiteralContext + tok antlr.Token +} + +func NewNullContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *NullContext { + var p = new(NullContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *NullContext) GetTok() antlr.Token { return s.tok } + +func (s *NullContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *NullContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *NullContext) NUL() antlr.TerminalNode { + return s.GetToken(CELParserNUL, 0) +} + +func (s *NullContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterNull(s) + } +} + +func (s *NullContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitNull(s) + } +} + +func (s *NullContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitNull(s) + + default: + return t.VisitChildren(s) + } +} + +type BoolFalseContext struct { + LiteralContext + tok antlr.Token +} + +func NewBoolFalseContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *BoolFalseContext { + var p = new(BoolFalseContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *BoolFalseContext) GetTok() antlr.Token { return s.tok } + +func (s *BoolFalseContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *BoolFalseContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *BoolFalseContext) CEL_FALSE() antlr.TerminalNode { + return s.GetToken(CELParserCEL_FALSE, 0) +} + +func (s *BoolFalseContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterBoolFalse(s) + } +} + +func (s *BoolFalseContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitBoolFalse(s) + } +} + +func (s *BoolFalseContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitBoolFalse(s) + + default: + return t.VisitChildren(s) + } +} + +type StringContext struct { + LiteralContext + tok antlr.Token +} + +func NewStringContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *StringContext { + var p = new(StringContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *StringContext) GetTok() antlr.Token { return s.tok } + +func (s *StringContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *StringContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *StringContext) STRING() antlr.TerminalNode { + return s.GetToken(CELParserSTRING, 0) +} + +func (s *StringContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterString(s) + } +} + +func (s *StringContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitString(s) + } +} + +func (s *StringContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitString(s) + + default: + return t.VisitChildren(s) + } +} + +type DoubleContext struct { + LiteralContext + sign antlr.Token + tok antlr.Token +} + +func NewDoubleContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *DoubleContext { + var p = new(DoubleContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *DoubleContext) GetSign() antlr.Token { return s.sign } + +func (s *DoubleContext) GetTok() antlr.Token { return s.tok } + +func (s *DoubleContext) SetSign(v antlr.Token) { s.sign = v } + +func (s *DoubleContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *DoubleContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *DoubleContext) NUM_FLOAT() antlr.TerminalNode { + return s.GetToken(CELParserNUM_FLOAT, 0) +} + +func (s *DoubleContext) MINUS() antlr.TerminalNode { + return s.GetToken(CELParserMINUS, 0) +} + +func (s *DoubleContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterDouble(s) + } +} + +func (s *DoubleContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitDouble(s) + } +} + +func (s *DoubleContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitDouble(s) + + default: + return t.VisitChildren(s) + } +} + +type BoolTrueContext struct { + LiteralContext + tok antlr.Token +} + +func NewBoolTrueContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *BoolTrueContext { + var p = new(BoolTrueContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *BoolTrueContext) GetTok() antlr.Token { return s.tok } + +func (s *BoolTrueContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *BoolTrueContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *BoolTrueContext) CEL_TRUE() antlr.TerminalNode { + return s.GetToken(CELParserCEL_TRUE, 0) +} + +func (s *BoolTrueContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterBoolTrue(s) + } +} + +func (s *BoolTrueContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitBoolTrue(s) + } +} + +func (s *BoolTrueContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitBoolTrue(s) + + default: + return t.VisitChildren(s) + } +} + +type IntContext struct { + LiteralContext + sign antlr.Token + tok antlr.Token +} + +func NewIntContext(parser antlr.Parser, ctx antlr.ParserRuleContext) *IntContext { + var p = new(IntContext) + + InitEmptyLiteralContext(&p.LiteralContext) + p.parser = parser + p.CopyAll(ctx.(*LiteralContext)) + + return p +} + +func (s *IntContext) GetSign() antlr.Token { return s.sign } + +func (s *IntContext) GetTok() antlr.Token { return s.tok } + +func (s *IntContext) SetSign(v antlr.Token) { s.sign = v } + +func (s *IntContext) SetTok(v antlr.Token) { s.tok = v } + +func (s *IntContext) GetRuleContext() antlr.RuleContext { + return s +} + +func (s *IntContext) NUM_INT() antlr.TerminalNode { + return s.GetToken(CELParserNUM_INT, 0) +} + +func (s *IntContext) MINUS() antlr.TerminalNode { + return s.GetToken(CELParserMINUS, 0) +} + +func (s *IntContext) EnterRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.EnterInt(s) + } +} + +func (s *IntContext) ExitRule(listener antlr.ParseTreeListener) { + if listenerT, ok := listener.(CELListener); ok { + listenerT.ExitInt(s) + } +} + +func (s *IntContext) Accept(visitor antlr.ParseTreeVisitor) interface{} { + switch t := visitor.(type) { + case CELVisitor: + return t.VisitInt(s) + + default: + return t.VisitChildren(s) + } +} + +func (p *CELParser) Literal() (localctx ILiteralContext) { + localctx = NewLiteralContext(p, p.GetParserRuleContext(), p.GetState()) + p.EnterRule(localctx, 32, CELParserRULE_literal) + var _la int + + p.SetState(256) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + + switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 35, p.GetParserRuleContext()) { + case 1: + localctx = NewIntContext(p, localctx) + p.EnterOuterAlt(localctx, 1) + p.SetState(243) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserMINUS { + { + p.SetState(242) + + var _m = p.Match(CELParserMINUS) + + localctx.(*IntContext).sign = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(245) + + var _m = p.Match(CELParserNUM_INT) + + localctx.(*IntContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 2: + localctx = NewUintContext(p, localctx) + p.EnterOuterAlt(localctx, 2) + { + p.SetState(246) + + var _m = p.Match(CELParserNUM_UINT) + + localctx.(*UintContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 3: + localctx = NewDoubleContext(p, localctx) + p.EnterOuterAlt(localctx, 3) + p.SetState(248) + p.GetErrorHandler().Sync(p) + if p.HasError() { + goto errorExit + } + _la = p.GetTokenStream().LA(1) + + if _la == CELParserMINUS { + { + p.SetState(247) + + var _m = p.Match(CELParserMINUS) + + localctx.(*DoubleContext).sign = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + } + { + p.SetState(250) + + var _m = p.Match(CELParserNUM_FLOAT) + + localctx.(*DoubleContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 4: + localctx = NewStringContext(p, localctx) + p.EnterOuterAlt(localctx, 4) + { + p.SetState(251) + + var _m = p.Match(CELParserSTRING) + + localctx.(*StringContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 5: + localctx = NewBytesContext(p, localctx) + p.EnterOuterAlt(localctx, 5) + { + p.SetState(252) + + var _m = p.Match(CELParserBYTES) + + localctx.(*BytesContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 6: + localctx = NewBoolTrueContext(p, localctx) + p.EnterOuterAlt(localctx, 6) + { + p.SetState(253) + + var _m = p.Match(CELParserCEL_TRUE) + + localctx.(*BoolTrueContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 7: + localctx = NewBoolFalseContext(p, localctx) + p.EnterOuterAlt(localctx, 7) + { + p.SetState(254) + + var _m = p.Match(CELParserCEL_FALSE) + + localctx.(*BoolFalseContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case 8: + localctx = NewNullContext(p, localctx) + p.EnterOuterAlt(localctx, 8) + { + p.SetState(255) + + var _m = p.Match(CELParserNUL) + + localctx.(*NullContext).tok = _m + if p.HasError() { + // Recognition error - abort rule + goto errorExit + } + } + + case antlr.ATNInvalidAltNumber: + goto errorExit + } + +errorExit: + if p.HasError() { + v := p.GetError() + localctx.SetException(v) + p.GetErrorHandler().ReportError(p, v) + p.GetErrorHandler().Recover(p, v) + p.SetError(nil) + } + p.ExitRule() + return localctx + goto errorExit // Trick to prevent compiler error if the label is not used +} + +func (p *CELParser) Sempred(localctx antlr.RuleContext, ruleIndex, predIndex int) bool { + switch ruleIndex { + case 4: + var t *RelationContext = nil + if localctx != nil { + t = localctx.(*RelationContext) + } + return p.Relation_Sempred(t, predIndex) + + case 5: + var t *CalcContext = nil + if localctx != nil { + t = localctx.(*CalcContext) + } + return p.Calc_Sempred(t, predIndex) + + case 7: + var t *MemberContext = nil + if localctx != nil { + t = localctx.(*MemberContext) + } + return p.Member_Sempred(t, predIndex) + + default: + panic("No predicate with index: " + fmt.Sprint(ruleIndex)) + } +} + +func (p *CELParser) Relation_Sempred(localctx antlr.RuleContext, predIndex int) bool { + switch predIndex { + case 0: + return p.Precpred(p.GetParserRuleContext(), 1) + + default: + panic("No predicate with index: " + fmt.Sprint(predIndex)) + } +} + +func (p *CELParser) Calc_Sempred(localctx antlr.RuleContext, predIndex int) bool { + switch predIndex { + case 1: + return p.Precpred(p.GetParserRuleContext(), 2) + + case 2: + return p.Precpred(p.GetParserRuleContext(), 1) + + default: + panic("No predicate with index: " + fmt.Sprint(predIndex)) + } +} + +func (p *CELParser) Member_Sempred(localctx antlr.RuleContext, predIndex int) bool { + switch predIndex { + case 3: + return p.Precpred(p.GetParserRuleContext(), 3) + + case 4: + return p.Precpred(p.GetParserRuleContext(), 2) + + case 5: + return p.Precpred(p.GetParserRuleContext(), 1) + + default: + panic("No predicate with index: " + fmt.Sprint(predIndex)) + } +} diff --git a/vendor/github.com/google/cel-go/parser/gen/cel_visitor.go b/vendor/github.com/google/cel-go/parser/gen/cel_visitor.go new file mode 100644 index 0000000000..7cefe5c571 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/cel_visitor.go @@ -0,0 +1,117 @@ +// Code generated from /usr/local/google/home/jdtatum/github/cel-go/parser/gen/CEL.g4 by ANTLR 4.13.1. DO NOT EDIT. + +package gen // CEL +import "github.com/antlr4-go/antlr/v4" + +// A complete Visitor for a parse tree produced by CELParser. +type CELVisitor interface { + antlr.ParseTreeVisitor + + // Visit a parse tree produced by CELParser#start. + VisitStart(ctx *StartContext) interface{} + + // Visit a parse tree produced by CELParser#expr. + VisitExpr(ctx *ExprContext) interface{} + + // Visit a parse tree produced by CELParser#conditionalOr. + VisitConditionalOr(ctx *ConditionalOrContext) interface{} + + // Visit a parse tree produced by CELParser#conditionalAnd. + VisitConditionalAnd(ctx *ConditionalAndContext) interface{} + + // Visit a parse tree produced by CELParser#relation. + VisitRelation(ctx *RelationContext) interface{} + + // Visit a parse tree produced by CELParser#calc. + VisitCalc(ctx *CalcContext) interface{} + + // Visit a parse tree produced by CELParser#MemberExpr. + VisitMemberExpr(ctx *MemberExprContext) interface{} + + // Visit a parse tree produced by CELParser#LogicalNot. + VisitLogicalNot(ctx *LogicalNotContext) interface{} + + // Visit a parse tree produced by CELParser#Negate. + VisitNegate(ctx *NegateContext) interface{} + + // Visit a parse tree produced by CELParser#MemberCall. + VisitMemberCall(ctx *MemberCallContext) interface{} + + // Visit a parse tree produced by CELParser#Select. + VisitSelect(ctx *SelectContext) interface{} + + // Visit a parse tree produced by CELParser#PrimaryExpr. + VisitPrimaryExpr(ctx *PrimaryExprContext) interface{} + + // Visit a parse tree produced by CELParser#Index. + VisitIndex(ctx *IndexContext) interface{} + + // Visit a parse tree produced by CELParser#Ident. + VisitIdent(ctx *IdentContext) interface{} + + // Visit a parse tree produced by CELParser#GlobalCall. + VisitGlobalCall(ctx *GlobalCallContext) interface{} + + // Visit a parse tree produced by CELParser#Nested. + VisitNested(ctx *NestedContext) interface{} + + // Visit a parse tree produced by CELParser#CreateList. + VisitCreateList(ctx *CreateListContext) interface{} + + // Visit a parse tree produced by CELParser#CreateStruct. + VisitCreateStruct(ctx *CreateStructContext) interface{} + + // Visit a parse tree produced by CELParser#CreateMessage. + VisitCreateMessage(ctx *CreateMessageContext) interface{} + + // Visit a parse tree produced by CELParser#ConstantLiteral. + VisitConstantLiteral(ctx *ConstantLiteralContext) interface{} + + // Visit a parse tree produced by CELParser#exprList. + VisitExprList(ctx *ExprListContext) interface{} + + // Visit a parse tree produced by CELParser#listInit. + VisitListInit(ctx *ListInitContext) interface{} + + // Visit a parse tree produced by CELParser#fieldInitializerList. + VisitFieldInitializerList(ctx *FieldInitializerListContext) interface{} + + // Visit a parse tree produced by CELParser#optField. + VisitOptField(ctx *OptFieldContext) interface{} + + // Visit a parse tree produced by CELParser#mapInitializerList. + VisitMapInitializerList(ctx *MapInitializerListContext) interface{} + + // Visit a parse tree produced by CELParser#SimpleIdentifier. + VisitSimpleIdentifier(ctx *SimpleIdentifierContext) interface{} + + // Visit a parse tree produced by CELParser#EscapedIdentifier. + VisitEscapedIdentifier(ctx *EscapedIdentifierContext) interface{} + + // Visit a parse tree produced by CELParser#optExpr. + VisitOptExpr(ctx *OptExprContext) interface{} + + // Visit a parse tree produced by CELParser#Int. + VisitInt(ctx *IntContext) interface{} + + // Visit a parse tree produced by CELParser#Uint. + VisitUint(ctx *UintContext) interface{} + + // Visit a parse tree produced by CELParser#Double. + VisitDouble(ctx *DoubleContext) interface{} + + // Visit a parse tree produced by CELParser#String. + VisitString(ctx *StringContext) interface{} + + // Visit a parse tree produced by CELParser#Bytes. + VisitBytes(ctx *BytesContext) interface{} + + // Visit a parse tree produced by CELParser#BoolTrue. + VisitBoolTrue(ctx *BoolTrueContext) interface{} + + // Visit a parse tree produced by CELParser#BoolFalse. + VisitBoolFalse(ctx *BoolFalseContext) interface{} + + // Visit a parse tree produced by CELParser#Null. + VisitNull(ctx *NullContext) interface{} +} diff --git a/vendor/github.com/google/cel-go/parser/gen/doc.go b/vendor/github.com/google/cel-go/parser/gen/doc.go new file mode 100644 index 0000000000..57edd4434d --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/doc.go @@ -0,0 +1,16 @@ +// Copyright 2021 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package gen contains all of the ANTLR-generated sources used by the cel-go parser. +package gen diff --git a/vendor/github.com/google/cel-go/parser/gen/generate.sh b/vendor/github.com/google/cel-go/parser/gen/generate.sh new file mode 100644 index 0000000000..27a9559f7c --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/gen/generate.sh @@ -0,0 +1,35 @@ +#!/bin/bash -eu +# +# Copyright 2018 Google LLC +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# To regenerate the CEL lexer/parser statically do the following: +# 1. Download the latest anltr tool from https://www.antlr.org/download.html +# 2. Copy the downloaded jar to the gen directory. It will have a name +# like antlr--complete.jar. +# 3. Modify the script below to refer to the current ANTLR version. +# 4. Execute the generation script from the gen directory. +# 5. Delete the jar and commit the regenerated sources. + +#!/bin/sh + +DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" + +# Generate AntLR artifacts. +java -Xmx500M -cp ${DIR}/antlr-4.13.1-complete.jar org.antlr.v4.Tool \ + -Dlanguage=Go \ + -package gen \ + -o ${DIR} \ + -visitor ${DIR}/CEL.g4 + diff --git a/vendor/github.com/google/cel-go/parser/helper.go b/vendor/github.com/google/cel-go/parser/helper.go new file mode 100644 index 0000000000..c13296dd5c --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/helper.go @@ -0,0 +1,515 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import ( + "sync" + + antlr "github.com/antlr4-go/antlr/v4" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +type parserHelper struct { + exprFactory ast.ExprFactory + source common.Source + sourceInfo *ast.SourceInfo + nextID int64 +} + +func newParserHelper(source common.Source, fac ast.ExprFactory) *parserHelper { + return &parserHelper{ + exprFactory: fac, + source: source, + sourceInfo: ast.NewSourceInfo(source), + nextID: 1, + } +} + +func (p *parserHelper) getSourceInfo() *ast.SourceInfo { + return p.sourceInfo +} + +func (p *parserHelper) newLiteral(ctx any, value ref.Val) ast.Expr { + return p.exprFactory.NewLiteral(p.newID(ctx), value) +} + +func (p *parserHelper) newLiteralBool(ctx any, value bool) ast.Expr { + return p.newLiteral(ctx, types.Bool(value)) +} + +func (p *parserHelper) newLiteralString(ctx any, value string) ast.Expr { + return p.newLiteral(ctx, types.String(value)) +} + +func (p *parserHelper) newLiteralBytes(ctx any, value []byte) ast.Expr { + return p.newLiteral(ctx, types.Bytes(value)) +} + +func (p *parserHelper) newLiteralInt(ctx any, value int64) ast.Expr { + return p.newLiteral(ctx, types.Int(value)) +} + +func (p *parserHelper) newLiteralUint(ctx any, value uint64) ast.Expr { + return p.newLiteral(ctx, types.Uint(value)) +} + +func (p *parserHelper) newLiteralDouble(ctx any, value float64) ast.Expr { + return p.newLiteral(ctx, types.Double(value)) +} + +func (p *parserHelper) newIdent(ctx any, name string) ast.Expr { + return p.exprFactory.NewIdent(p.newID(ctx), name) +} + +func (p *parserHelper) newSelect(ctx any, operand ast.Expr, field string) ast.Expr { + return p.exprFactory.NewSelect(p.newID(ctx), operand, field) +} + +func (p *parserHelper) newPresenceTest(ctx any, operand ast.Expr, field string) ast.Expr { + return p.exprFactory.NewPresenceTest(p.newID(ctx), operand, field) +} + +func (p *parserHelper) newGlobalCall(ctx any, function string, args ...ast.Expr) ast.Expr { + return p.exprFactory.NewCall(p.newID(ctx), function, args...) +} + +func (p *parserHelper) newReceiverCall(ctx any, function string, target ast.Expr, args ...ast.Expr) ast.Expr { + return p.exprFactory.NewMemberCall(p.newID(ctx), function, target, args...) +} + +func (p *parserHelper) newList(ctx any, elements []ast.Expr, optionals ...int32) ast.Expr { + return p.exprFactory.NewList(p.newID(ctx), elements, optionals) +} + +func (p *parserHelper) newMap(ctx any, entries ...ast.EntryExpr) ast.Expr { + return p.exprFactory.NewMap(p.newID(ctx), entries) +} + +func (p *parserHelper) newMapEntry(entryID int64, key ast.Expr, value ast.Expr, optional bool) ast.EntryExpr { + return p.exprFactory.NewMapEntry(entryID, key, value, optional) +} + +func (p *parserHelper) newObject(ctx any, typeName string, fields ...ast.EntryExpr) ast.Expr { + return p.exprFactory.NewStruct(p.newID(ctx), typeName, fields) +} + +func (p *parserHelper) newObjectField(fieldID int64, field string, value ast.Expr, optional bool) ast.EntryExpr { + return p.exprFactory.NewStructField(fieldID, field, value, optional) +} + +func (p *parserHelper) newComprehension(ctx any, + iterRange ast.Expr, + iterVar, + accuVar string, + accuInit ast.Expr, + condition ast.Expr, + step ast.Expr, + result ast.Expr) ast.Expr { + return p.exprFactory.NewComprehension( + p.newID(ctx), iterRange, iterVar, accuVar, accuInit, condition, step, result) +} + +func (p *parserHelper) newComprehensionTwoVar(ctx any, + iterRange ast.Expr, + iterVar, iterVar2, + accuVar string, + accuInit ast.Expr, + condition ast.Expr, + step ast.Expr, + result ast.Expr) ast.Expr { + return p.exprFactory.NewComprehensionTwoVar( + p.newID(ctx), iterRange, iterVar, iterVar2, accuVar, accuInit, condition, step, result) +} + +func (p *parserHelper) newID(ctx any) int64 { + if id, isID := ctx.(int64); isID { + return id + } + return p.id(ctx) +} + +func (p *parserHelper) newExpr(ctx any) ast.Expr { + return p.exprFactory.NewUnspecifiedExpr(p.newID(ctx)) +} + +func (p *parserHelper) id(ctx any) int64 { + var offset ast.OffsetRange + switch c := ctx.(type) { + case antlr.ParserRuleContext: + start := c.GetStart() + offset.Start = p.sourceInfo.ComputeOffset(int32(start.GetLine()), int32(start.GetColumn())) + offset.Stop = offset.Start + int32(len(c.GetText())) + case antlr.Token: + offset.Start = p.sourceInfo.ComputeOffset(int32(c.GetLine()), int32(c.GetColumn())) + offset.Stop = offset.Start + int32(len(c.GetText())) + case common.Location: + offset.Start = p.sourceInfo.ComputeOffset(int32(c.Line()), int32(c.Column())) + offset.Stop = offset.Start + case ast.OffsetRange: + offset = c + default: + // This should only happen if the ctx is nil + return -1 + } + id := p.nextID + p.sourceInfo.SetOffsetRange(id, offset) + p.nextID++ + return id +} + +func (p *parserHelper) deleteID(id int64) { + p.sourceInfo.ClearOffsetRange(id) + if id == p.nextID-1 { + p.nextID-- + } +} + +func (p *parserHelper) getLocation(id int64) common.Location { + return p.sourceInfo.GetStartLocation(id) +} + +func (p *parserHelper) getLocationByOffset(offset int32) common.Location { + return p.getSourceInfo().GetLocationByOffset(offset) +} + +// buildMacroCallArg iterates the expression and returns a new expression +// where all macros have been replaced by their IDs in MacroCalls +func (p *parserHelper) buildMacroCallArg(expr ast.Expr) ast.Expr { + if _, found := p.sourceInfo.GetMacroCall(expr.ID()); found { + return p.exprFactory.NewUnspecifiedExpr(expr.ID()) + } + + switch expr.Kind() { + case ast.CallKind: + // Iterate the AST from `expr` recursively looking for macros. Because we are at most + // starting from the top level macro, this recursion is bounded by the size of the AST. This + // means that the depth check on the AST during parsing will catch recursion overflows + // before we get to here. + call := expr.AsCall() + macroArgs := make([]ast.Expr, len(call.Args())) + for index, arg := range call.Args() { + macroArgs[index] = p.buildMacroCallArg(arg) + } + if !call.IsMemberFunction() { + return p.exprFactory.NewCall(expr.ID(), call.FunctionName(), macroArgs...) + } + macroTarget := p.buildMacroCallArg(call.Target()) + return p.exprFactory.NewMemberCall(expr.ID(), call.FunctionName(), macroTarget, macroArgs...) + case ast.ListKind: + list := expr.AsList() + macroListArgs := make([]ast.Expr, list.Size()) + for i, elem := range list.Elements() { + macroListArgs[i] = p.buildMacroCallArg(elem) + } + return p.exprFactory.NewList(expr.ID(), macroListArgs, list.OptionalIndices()) + } + return expr +} + +// addMacroCall adds the macro the the MacroCalls map in source info. If a macro has args/subargs/target +// that are macros, their ID will be stored instead for later self-lookups. +func (p *parserHelper) addMacroCall(exprID int64, function string, target ast.Expr, args ...ast.Expr) { + macroArgs := make([]ast.Expr, len(args)) + for index, arg := range args { + macroArgs[index] = p.buildMacroCallArg(arg) + } + if target == nil { + p.sourceInfo.SetMacroCall(exprID, p.exprFactory.NewCall(0, function, macroArgs...)) + return + } + macroTarget := target + if _, found := p.sourceInfo.GetMacroCall(target.ID()); found { + macroTarget = p.exprFactory.NewUnspecifiedExpr(target.ID()) + } else { + macroTarget = p.buildMacroCallArg(target) + } + p.sourceInfo.SetMacroCall(exprID, p.exprFactory.NewMemberCall(0, function, macroTarget, macroArgs...)) +} + +// logicManager compacts logical trees into a more efficient structure which is semantically +// equivalent with how the logic graph is constructed by the ANTLR parser. +// +// The purpose of the logicManager is to ensure a compact serialization format for the logical &&, || +// operators which have a tendency to create long DAGs which are skewed in one direction. Since the +// operators are commutative re-ordering the terms *must not* affect the evaluation result. +// +// The logic manager will either render the terms to N-chained && / || operators as a single logical +// call with N-terms, or will rebalance the tree. Rebalancing the terms is a safe, if somewhat +// controversial choice as it alters the traditional order of execution assumptions present in most +// expressions. +type logicManager struct { + exprFactory ast.ExprFactory + function string + terms []ast.Expr + ops []int64 + variadicASTs bool +} + +// newVariadicLogicManager creates a logic manager instance bound to a specific function and its first term. +func newVariadicLogicManager(fac ast.ExprFactory, function string, term ast.Expr) *logicManager { + return &logicManager{ + exprFactory: fac, + function: function, + terms: []ast.Expr{term}, + ops: []int64{}, + variadicASTs: true, + } +} + +// newBalancingLogicManager creates a logic manager instance bound to a specific function and its first term. +func newBalancingLogicManager(fac ast.ExprFactory, function string, term ast.Expr) *logicManager { + return &logicManager{ + exprFactory: fac, + function: function, + terms: []ast.Expr{term}, + ops: []int64{}, + variadicASTs: false, + } +} + +// addTerm adds an operation identifier and term to the set of terms to be balanced. +func (l *logicManager) addTerm(op int64, term ast.Expr) { + l.terms = append(l.terms, term) + l.ops = append(l.ops, op) +} + +// toExpr renders the logic graph into an Expr value, either balancing a tree of logical +// operations or creating a variadic representation of the logical operator. +func (l *logicManager) toExpr() ast.Expr { + if len(l.terms) == 1 { + return l.terms[0] + } + if l.variadicASTs { + return l.exprFactory.NewCall(l.ops[0], l.function, l.terms...) + } + return l.balancedTree(0, len(l.ops)-1) +} + +// balancedTree recursively balances the terms provided to a commutative operator. +func (l *logicManager) balancedTree(lo, hi int) ast.Expr { + mid := (lo + hi + 1) / 2 + + var left ast.Expr + if mid == lo { + left = l.terms[mid] + } else { + left = l.balancedTree(lo, mid-1) + } + + var right ast.Expr + if mid == hi { + right = l.terms[mid+1] + } else { + right = l.balancedTree(mid+1, hi) + } + return l.exprFactory.NewCall(l.ops[mid], l.function, left, right) +} + +type exprHelper struct { + *parserHelper + id int64 +} + +func (e *exprHelper) nextMacroID() int64 { + return e.parserHelper.id(e.parserHelper.getLocation(e.id)) +} + +// Copy implements the ExprHelper interface method by producing a copy of the input Expr value +// with a fresh set of numeric identifiers the Expr and all its descendants. +func (e *exprHelper) Copy(expr ast.Expr) ast.Expr { + offsetRange, _ := e.parserHelper.sourceInfo.GetOffsetRange(expr.ID()) + copyID := e.parserHelper.newID(offsetRange) + switch expr.Kind() { + case ast.LiteralKind: + return e.exprFactory.NewLiteral(copyID, expr.AsLiteral()) + case ast.IdentKind: + return e.exprFactory.NewIdent(copyID, expr.AsIdent()) + case ast.SelectKind: + sel := expr.AsSelect() + op := e.Copy(sel.Operand()) + if sel.IsTestOnly() { + return e.exprFactory.NewPresenceTest(copyID, op, sel.FieldName()) + } + return e.exprFactory.NewSelect(copyID, op, sel.FieldName()) + case ast.CallKind: + call := expr.AsCall() + args := call.Args() + argsCopy := make([]ast.Expr, len(args)) + for i, arg := range args { + argsCopy[i] = e.Copy(arg) + } + if !call.IsMemberFunction() { + return e.exprFactory.NewCall(copyID, call.FunctionName(), argsCopy...) + } + return e.exprFactory.NewMemberCall(copyID, call.FunctionName(), e.Copy(call.Target()), argsCopy...) + case ast.ListKind: + list := expr.AsList() + elems := list.Elements() + elemsCopy := make([]ast.Expr, len(elems)) + for i, elem := range elems { + elemsCopy[i] = e.Copy(elem) + } + return e.exprFactory.NewList(copyID, elemsCopy, list.OptionalIndices()) + case ast.MapKind: + m := expr.AsMap() + entries := m.Entries() + entriesCopy := make([]ast.EntryExpr, len(entries)) + for i, en := range entries { + entry := en.AsMapEntry() + entryID := e.nextMacroID() + entriesCopy[i] = e.exprFactory.NewMapEntry(entryID, + e.Copy(entry.Key()), e.Copy(entry.Value()), entry.IsOptional()) + } + return e.exprFactory.NewMap(copyID, entriesCopy) + case ast.StructKind: + s := expr.AsStruct() + fields := s.Fields() + fieldsCopy := make([]ast.EntryExpr, len(fields)) + for i, f := range fields { + field := f.AsStructField() + fieldID := e.nextMacroID() + fieldsCopy[i] = e.exprFactory.NewStructField(fieldID, + field.Name(), e.Copy(field.Value()), field.IsOptional()) + } + return e.exprFactory.NewStruct(copyID, s.TypeName(), fieldsCopy) + case ast.ComprehensionKind: + compre := expr.AsComprehension() + iterRange := e.Copy(compre.IterRange()) + accuInit := e.Copy(compre.AccuInit()) + cond := e.Copy(compre.LoopCondition()) + step := e.Copy(compre.LoopStep()) + result := e.Copy(compre.Result()) + // All comprehensions can be represented by the two-variable comprehension since the + // differentiation between one and two-variable is whether the iterVar2 value is non-empty. + return e.exprFactory.NewComprehensionTwoVar(copyID, + iterRange, compre.IterVar(), compre.IterVar2(), compre.AccuVar(), accuInit, cond, step, result) + } + return e.exprFactory.NewUnspecifiedExpr(copyID) +} + +// NewLiteral implements the ExprHelper interface method. +func (e *exprHelper) NewLiteral(value ref.Val) ast.Expr { + return e.exprFactory.NewLiteral(e.nextMacroID(), value) +} + +// NewList implements the ExprHelper interface method. +func (e *exprHelper) NewList(elems ...ast.Expr) ast.Expr { + return e.exprFactory.NewList(e.nextMacroID(), elems, []int32{}) +} + +// NewMap implements the ExprHelper interface method. +func (e *exprHelper) NewMap(entries ...ast.EntryExpr) ast.Expr { + return e.exprFactory.NewMap(e.nextMacroID(), entries) +} + +// NewMapEntry implements the ExprHelper interface method. +func (e *exprHelper) NewMapEntry(key ast.Expr, val ast.Expr, optional bool) ast.EntryExpr { + return e.exprFactory.NewMapEntry(e.nextMacroID(), key, val, optional) +} + +// NewStruct implements the ExprHelper interface method. +func (e *exprHelper) NewStruct(typeName string, fieldInits ...ast.EntryExpr) ast.Expr { + return e.exprFactory.NewStruct(e.nextMacroID(), typeName, fieldInits) +} + +// NewStructField implements the ExprHelper interface method. +func (e *exprHelper) NewStructField(field string, init ast.Expr, optional bool) ast.EntryExpr { + return e.exprFactory.NewStructField(e.nextMacroID(), field, init, optional) +} + +// NewComprehension implements the ExprHelper interface method. +func (e *exprHelper) NewComprehension( + iterRange ast.Expr, + iterVar string, + accuVar string, + accuInit ast.Expr, + condition ast.Expr, + step ast.Expr, + result ast.Expr) ast.Expr { + return e.exprFactory.NewComprehension( + e.nextMacroID(), iterRange, iterVar, accuVar, accuInit, condition, step, result) +} + +// NewComprehensionTwoVar implements the ExprHelper interface method. +func (e *exprHelper) NewComprehensionTwoVar( + iterRange ast.Expr, + iterVar, + iterVar2, + accuVar string, + accuInit, + condition, + step, + result ast.Expr) ast.Expr { + return e.exprFactory.NewComprehensionTwoVar( + e.nextMacroID(), iterRange, iterVar, iterVar2, accuVar, accuInit, condition, step, result) +} + +// NewIdent implements the ExprHelper interface method. +func (e *exprHelper) NewIdent(name string) ast.Expr { + return e.exprFactory.NewIdent(e.nextMacroID(), name) +} + +// NewAccuIdent implements the ExprHelper interface method. +func (e *exprHelper) NewAccuIdent() ast.Expr { + return e.exprFactory.NewAccuIdent(e.nextMacroID()) +} + +// AccuIdentName implements the ExprHelper interface method. +func (e *exprHelper) AccuIdentName() string { + return e.exprFactory.AccuIdentName() +} + +// NewGlobalCall implements the ExprHelper interface method. +func (e *exprHelper) NewCall(function string, args ...ast.Expr) ast.Expr { + return e.exprFactory.NewCall(e.nextMacroID(), function, args...) +} + +// NewMemberCall implements the ExprHelper interface method. +func (e *exprHelper) NewMemberCall(function string, target ast.Expr, args ...ast.Expr) ast.Expr { + return e.exprFactory.NewMemberCall(e.nextMacroID(), function, target, args...) +} + +// NewPresenceTest implements the ExprHelper interface method. +func (e *exprHelper) NewPresenceTest(operand ast.Expr, field string) ast.Expr { + return e.exprFactory.NewPresenceTest(e.nextMacroID(), operand, field) +} + +// NewSelect implements the ExprHelper interface method. +func (e *exprHelper) NewSelect(operand ast.Expr, field string) ast.Expr { + return e.exprFactory.NewSelect(e.nextMacroID(), operand, field) +} + +// OffsetLocation implements the ExprHelper interface method. +func (e *exprHelper) OffsetLocation(exprID int64) common.Location { + return e.parserHelper.sourceInfo.GetStartLocation(exprID) +} + +// NewError associates an error message with a given expression id, populating the source offset location of the error if possible. +func (e *exprHelper) NewError(exprID int64, message string) *common.Error { + return common.NewError(exprID, message, e.OffsetLocation(exprID)) +} + +var ( + // Thread-safe pool of ExprHelper values to minimize alloc overhead of ExprHelper creations. + exprHelperPool = &sync.Pool{ + New: func() any { + return &exprHelper{} + }, + } +) diff --git a/vendor/github.com/google/cel-go/parser/input.go b/vendor/github.com/google/cel-go/parser/input.go new file mode 100644 index 0000000000..44792455d8 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/input.go @@ -0,0 +1,129 @@ +// Copyright 2021 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import ( + antlr "github.com/antlr4-go/antlr/v4" + + "github.com/google/cel-go/common/runes" +) + +type charStream struct { + buf runes.Buffer + pos int + src string +} + +// Consume implements (antlr.CharStream).Consume. +func (c *charStream) Consume() { + if c.pos >= c.buf.Len() { + panic("cannot consume EOF") + } + c.pos++ +} + +// LA implements (antlr.CharStream).LA. +func (c *charStream) LA(offset int) int { + if offset == 0 { + return 0 + } + if offset < 0 { + offset++ + } + pos := c.pos + offset - 1 + if pos < 0 || pos >= c.buf.Len() { + return antlr.TokenEOF + } + return int(c.buf.Get(pos)) +} + +// LT mimics (*antlr.InputStream).LT. +func (c *charStream) LT(offset int) int { + return c.LA(offset) +} + +// Mark implements (antlr.CharStream).Mark. +func (c *charStream) Mark() int { + return -1 +} + +// Release implements (antlr.CharStream).Release. +func (c *charStream) Release(marker int) {} + +// Index implements (antlr.CharStream).Index. +func (c *charStream) Index() int { + return c.pos +} + +// Seek implements (antlr.CharStream).Seek. +func (c *charStream) Seek(index int) { + if index <= c.pos { + c.pos = index + return + } + if index < c.buf.Len() { + c.pos = index + } else { + c.pos = c.buf.Len() + } +} + +// Size implements (antlr.CharStream).Size. +func (c *charStream) Size() int { + return c.buf.Len() +} + +// GetSourceName implements (antlr.CharStream).GetSourceName. +func (c *charStream) GetSourceName() string { + return c.src +} + +// GetText implements (antlr.CharStream).GetText. +func (c *charStream) GetText(start, stop int) string { + if stop >= c.buf.Len() { + stop = c.buf.Len() - 1 + } + if start >= c.buf.Len() { + return "" + } + return c.buf.Slice(start, stop+1) +} + +// GetTextFromTokens implements (antlr.CharStream).GetTextFromTokens. +func (c *charStream) GetTextFromTokens(start, stop antlr.Token) string { + if start != nil && stop != nil { + return c.GetText(start.GetTokenIndex(), stop.GetTokenIndex()) + } + return "" +} + +// GetTextFromInterval implements (antlr.CharStream).GetTextFromInterval. +func (c *charStream) GetTextFromInterval(i antlr.Interval) string { + return c.GetText(i.Start, i.Stop) +} + +// String mimics (*antlr.InputStream).String. +func (c *charStream) String() string { + return c.buf.Slice(0, c.buf.Len()) +} + +var _ antlr.CharStream = &charStream{} + +func newCharStream(buf runes.Buffer, desc string) antlr.CharStream { + return &charStream{ + buf: buf, + src: desc, + } +} diff --git a/vendor/github.com/google/cel-go/parser/macro.go b/vendor/github.com/google/cel-go/parser/macro.go new file mode 100644 index 0000000000..1ef43c4b5e --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/macro.go @@ -0,0 +1,603 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import ( + "fmt" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// MacroOpt defines a functional option for configuring macro behavior. +type MacroOpt func(*macro) *macro + +// MacroDocs configures a list of strings into a multiline description for the macro. +func MacroDocs(docs ...string) MacroOpt { + return func(m *macro) *macro { + m.doc = common.MultilineDescription(docs...) + return m + } +} + +// MacroExamples configures a list of examples, either as a string or common.MultilineString, +// into an example set to be provided with the macro Documentation() call. +func MacroExamples(examples ...string) MacroOpt { + return func(m *macro) *macro { + m.examples = examples + return m + } +} + +// NewGlobalMacro creates a Macro for a global function with the specified arg count. +func NewGlobalMacro(function string, argCount int, expander MacroExpander, opts ...MacroOpt) Macro { + m := ¯o{ + function: function, + argCount: argCount, + expander: expander} + for _, opt := range opts { + m = opt(m) + } + return m +} + +// NewReceiverMacro creates a Macro for a receiver function matching the specified arg count. +func NewReceiverMacro(function string, argCount int, expander MacroExpander, opts ...MacroOpt) Macro { + m := ¯o{ + function: function, + argCount: argCount, + expander: expander, + receiverStyle: true} + for _, opt := range opts { + m = opt(m) + } + return m +} + +// NewGlobalVarArgMacro creates a Macro for a global function with a variable arg count. +func NewGlobalVarArgMacro(function string, expander MacroExpander, opts ...MacroOpt) Macro { + m := ¯o{ + function: function, + expander: expander, + varArgStyle: true} + for _, opt := range opts { + m = opt(m) + } + return m +} + +// NewReceiverVarArgMacro creates a Macro for a receiver function matching a variable arg count. +func NewReceiverVarArgMacro(function string, expander MacroExpander, opts ...MacroOpt) Macro { + m := ¯o{ + function: function, + expander: expander, + receiverStyle: true, + varArgStyle: true} + for _, opt := range opts { + m = opt(m) + } + return m +} + +// Macro interface for describing the function signature to match and the MacroExpander to apply. +// +// Note: when a Macro should apply to multiple overloads (based on arg count) of a given function, +// a Macro should be created per arg-count. +type Macro interface { + // Function name to match. + Function() string + + // ArgCount for the function call. + // + // When the macro is a var-arg style macro, the return value will be zero, but the MacroKey + // will contain a `*` where the arg count would have been. + ArgCount() int + + // IsReceiverStyle returns true if the macro matches a receiver style call. + IsReceiverStyle() bool + + // MacroKey returns the macro signatures accepted by this macro. + // + // Format: `::`. + // + // When the macros is a var-arg style macro, the `arg-count` value is represented as a `*`. + MacroKey() string + + // Expander returns the MacroExpander to apply when the macro key matches the parsed call + // signature. + Expander() MacroExpander +} + +// Macro type which declares the function name and arg count expected for the +// macro, as well as a macro expansion function. +type macro struct { + function string + receiverStyle bool + varArgStyle bool + argCount int + expander MacroExpander + doc string + examples []string +} + +// Function returns the macro's function name (i.e. the function whose syntax it mimics). +func (m *macro) Function() string { + return m.function +} + +// ArgCount returns the number of arguments the macro expects. +func (m *macro) ArgCount() int { + return m.argCount +} + +// IsReceiverStyle returns whether the macro is receiver style. +func (m *macro) IsReceiverStyle() bool { + return m.receiverStyle +} + +// Expander implements the Macro interface method. +func (m *macro) Expander() MacroExpander { + return m.expander +} + +// MacroKey implements the Macro interface method. +func (m *macro) MacroKey() string { + if m.varArgStyle { + return makeVarArgMacroKey(m.function, m.receiverStyle) + } + return makeMacroKey(m.function, m.argCount, m.receiverStyle) +} + +// Documentation generates documentation and examples for the macro. +func (m *macro) Documentation() *common.Doc { + examples := make([]*common.Doc, len(m.examples)) + for i, ex := range m.examples { + examples[i] = common.NewExampleDoc(ex) + } + return common.NewMacroDoc(m.Function(), m.doc, examples...) +} + +func makeMacroKey(name string, args int, receiverStyle bool) string { + return fmt.Sprintf("%s:%d:%v", name, args, receiverStyle) +} + +func makeVarArgMacroKey(name string, receiverStyle bool) string { + return fmt.Sprintf("%s:*:%v", name, receiverStyle) +} + +// MacroExpander converts a call and its associated arguments into a new CEL abstract syntax tree. +// +// If the MacroExpander determines within the implementation that an expansion is not needed it may return +// a nil Expr value to indicate a non-match. However, if an expansion is to be performed, but the arguments +// are not well-formed, the result of the expansion will be an error. +// +// The MacroExpander accepts as arguments a MacroExprHelper as well as the arguments used in the function call +// and produces as output an Expr ast node. +// +// Note: when the Macro.IsReceiverStyle() method returns true, the target argument will be nil. +type MacroExpander func(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) + +// ExprHelper assists with the creation of Expr values in a manner which is consistent +// the internal semantics and id generation behaviors of the parser and checker libraries. +type ExprHelper interface { + // Copy the input expression with a brand new set of identifiers. + Copy(ast.Expr) ast.Expr + + // Literal creates an Expr value for a scalar literal value. + NewLiteral(value ref.Val) ast.Expr + + // NewList creates a list literal instruction with an optional set of elements. + NewList(elems ...ast.Expr) ast.Expr + + // NewMap creates a CreateStruct instruction for a map where the map is comprised of the + // optional set of key, value entries. + NewMap(entries ...ast.EntryExpr) ast.Expr + + // NewMapEntry creates a Map Entry for the key, value pair. + NewMapEntry(key ast.Expr, val ast.Expr, optional bool) ast.EntryExpr + + // NewStruct creates a struct literal expression with an optional set of field initializers. + NewStruct(typeName string, fieldInits ...ast.EntryExpr) ast.Expr + + // NewStructField creates a new struct field initializer from the field name and value. + NewStructField(field string, init ast.Expr, optional bool) ast.EntryExpr + + // NewComprehension creates a new one-variable comprehension instruction. + // + // - iterRange represents the expression that resolves to a list or map where the elements or + // keys (respectively) will be iterated over. + // - iterVar is the variable name for the list element value, or the map key, depending on the + // range type. + // - accuVar is the accumulation variable name, typically parser.AccumulatorName. + // - accuInit is the initial expression whose value will be set for the accuVar prior to + // folding. + // - condition is the expression to test to determine whether to continue folding. + // - step is the expression to evaluation at the conclusion of a single fold iteration. + // - result is the computation to evaluate at the conclusion of the fold. + // + // The accuVar should not shadow variable names that you would like to reference within the + // environment in the step and condition expressions. Presently, the name __result__ is commonly + // used by built-in macros but this may change in the future. + NewComprehension(iterRange ast.Expr, + iterVar, + accuVar string, + accuInit, + condition, + step, + result ast.Expr) ast.Expr + + // NewComprehensionTwoVar creates a new two-variable comprehension instruction. + // + // - iterRange represents the expression that resolves to a list or map where the elements or + // keys (respectively) will be iterated over. + // - iterVar is the iteration variable assigned to the list index or the map key. + // - iterVar2 is the iteration variable assigned to the list element value or the map key value. + // - accuVar is the accumulation variable name, typically parser.AccumulatorName. + // - accuInit is the initial expression whose value will be set for the accuVar prior to + // folding. + // - condition is the expression to test to determine whether to continue folding. + // - step is the expression to evaluation at the conclusion of a single fold iteration. + // - result is the computation to evaluate at the conclusion of the fold. + // + // The accuVar should not shadow variable names that you would like to reference within the + // environment in the step and condition expressions. Presently, the name __result__ is commonly + // used by built-in macros but this may change in the future. + NewComprehensionTwoVar(iterRange ast.Expr, + iterVar, + iterVar2, + accuVar string, + accuInit, + condition, + step, + result ast.Expr) ast.Expr + + // NewIdent creates an identifier Expr value. + NewIdent(name string) ast.Expr + + // NewAccuIdent returns an accumulator identifier for use with comprehension results. + NewAccuIdent() ast.Expr + + // AccuIdentName returns the name of the accumulator identifier. + AccuIdentName() string + + // NewCall creates a function call Expr value for a global (free) function. + NewCall(function string, args ...ast.Expr) ast.Expr + + // NewMemberCall creates a function call Expr value for a receiver-style function. + NewMemberCall(function string, target ast.Expr, args ...ast.Expr) ast.Expr + + // NewPresenceTest creates a Select TestOnly Expr value for modelling has() semantics. + NewPresenceTest(operand ast.Expr, field string) ast.Expr + + // NewSelect create a field traversal Expr value. + NewSelect(operand ast.Expr, field string) ast.Expr + + // OffsetLocation returns the Location of the expression identifier. + OffsetLocation(exprID int64) common.Location + + // NewError associates an error message with a given expression id. + NewError(exprID int64, message string) *common.Error +} + +var ( + // HasMacro expands "has(m.f)" which tests the presence of a field, avoiding the need to + // specify the field as a string. + HasMacro = NewGlobalMacro(operators.Has, 1, MakeHas, + MacroDocs( + `check a protocol buffer message for the presence of a field, or check a map`, + `for the presence of a string key.`, + `Only map accesses using the select notation are supported.`), + MacroExamples( + common.MultilineDescription( + `// true if the 'address' field exists in the 'user' message`, + `has(user.address)`), + common.MultilineDescription( + `// test whether the 'key_name' is set on the map which defines it`, + `has({'key_name': 'value'}.key_name) // true`), + common.MultilineDescription( + `// test whether the 'id' field is set to a non-default value on the Expr{} message literal`, + `has(Expr{}.id) // false`), + )) + + // AllMacro expands "range.all(var, predicate)" into a comprehension which ensures that all + // elements in the range satisfy the predicate. + AllMacro = NewReceiverMacro(operators.All, 2, MakeAll, + MacroDocs(`tests whether all elements in the input list or all keys in a map`, + `satisfy the given predicate. The all macro behaves in a manner consistent with`, + `the Logical AND operator including in how it absorbs errors and short-circuits.`), + MacroExamples( + `[1, 2, 3].all(x, x > 0) // true`, + `[1, 2, 0].all(x, x > 0) // false`, + `['apple', 'banana', 'cherry'].all(fruit, fruit.size() > 3) // true`, + `[3.14, 2.71, 1.61].all(num, num < 3.0) // false`, + `{'a': 1, 'b': 2, 'c': 3}.all(key, key != 'b') // false`, + common.MultilineDescription( + `// an empty list or map as the range will result in a trivially true result`, + `[].all(x, x > 0) // true`), + )) + + // ExistsMacro expands "range.exists(var, predicate)" into a comprehension which ensures that + // some element in the range satisfies the predicate. + ExistsMacro = NewReceiverMacro(operators.Exists, 2, MakeExists, + MacroDocs(`tests whether any value in the list or any key in the map`, + `satisfies the predicate expression. The exists macro behaves in a manner`, + `consistent with the Logical OR operator including in how it absorbs errors and`, + `short-circuits.`), + MacroExamples( + `[1, 2, 3].exists(i, i % 2 != 0) // true`, + `[0, -1, 5].exists(num, num < 0) // true`, + `{'x': 'foo', 'y': 'bar'}.exists(key, key.startsWith('z')) // false`, + common.MultilineDescription( + `// an empty list or map as the range will result in a trivially false result`, + `[].exists(i, i > 0) // false`), + common.MultilineDescription( + `// test whether a key name equalling 'iss' exists in the map and the`, + `// value contains the substring 'cel.dev'`, + `// tokens = {'sub': 'me', 'iss': 'https://issuer.cel.dev'}`, + `tokens.exists(k, k == 'iss' && tokens[k].contains('cel.dev'))`), + )) + + // ExistsOneMacro expands "range.exists_one(var, predicate)", which is true if for exactly one + // element in range the predicate holds. + // Deprecated: Use ExistsOneMacroNew + ExistsOneMacro = NewReceiverMacro(operators.ExistsOne, 2, MakeExistsOne, + MacroDocs(`tests whether exactly one list element or map key satisfies`, + `the predicate expression. This macro does not short-circuit in order to remain`, + `consistent with logical operators being the only operators which can absorb`, + `errors within CEL.`), + MacroExamples( + `[1, 2, 2].exists_one(i, i < 2) // true`, + `{'a': 'hello', 'aa': 'hellohello'}.exists_one(k, k.startsWith('a')) // false`, + `[1, 2, 3, 4].exists_one(num, num % 2 == 0) // false`, + common.MultilineDescription( + `// ensure exactly one key in the map ends in @acme.co`, + `{'wiley@acme.co': 'coyote', 'aa@milne.co': 'bear'}.exists_one(k, k.endsWith('@acme.co')) // true`), + )) + + // ExistsOneMacroNew expands "range.existsOne(var, predicate)", which is true if for exactly one + // element in range the predicate holds. + ExistsOneMacroNew = NewReceiverMacro("existsOne", 2, MakeExistsOne, + MacroDocs( + `tests whether exactly one list element or map key satisfies the predicate`, + `expression. This macro does not short-circuit in order to remain consistent`, + `with logical operators being the only operators which can absorb errors`, + `within CEL.`), + MacroExamples( + `[1, 2, 2].existsOne(i, i < 2) // true`, + `{'a': 'hello', 'aa': 'hellohello'}.existsOne(k, k.startsWith('a')) // false`, + `[1, 2, 3, 4].existsOne(num, num % 2 == 0) // false`, + common.MultilineDescription( + `// ensure exactly one key in the map ends in @acme.co`, + `{'wiley@acme.co': 'coyote', 'aa@milne.co': 'bear'}.existsOne(k, k.endsWith('@acme.co')) // true`), + )) + + // MapMacro expands "range.map(var, function)" into a comprehension which applies the function + // to each element in the range to produce a new list. + MapMacro = NewReceiverMacro(operators.Map, 2, MakeMap, + MacroDocs("the three-argument form of map transforms all elements in the input range."), + MacroExamples( + `[1, 2, 3].map(x, x * 2) // [2, 4, 6]`, + `[5, 10, 15].map(x, x / 5) // [1, 2, 3]`, + `['apple', 'banana'].map(fruit, fruit.upperAscii()) // ['APPLE', 'BANANA']`, + common.MultilineDescription( + `// Combine all map key-value pairs into a list`, + `{'hi': 'you', 'howzit': 'bruv'}.map(k,`, + ` k + ":" + {'hi': 'you', 'howzit': 'bruv'}[k]) // ['hi:you', 'howzit:bruv']`), + )) + + // MapFilterMacro expands "range.map(var, predicate, function)" into a comprehension which + // first filters the elements in the range by the predicate, then applies the transform function + // to produce a new list. + MapFilterMacro = NewReceiverMacro(operators.Map, 3, MakeMap, + MacroDocs(`the four-argument form of the map transforms only elements which satisfy`, + `the predicate which is equivalent to chaining the filter and three-argument`, + `map macros together.`), + MacroExamples( + common.MultilineDescription( + `// multiply only numbers divisible two, by 2`, + `[1, 2, 3, 4].map(num, num % 2 == 0, num * 2) // [4, 8]`), + )) + + // FilterMacro expands "range.filter(var, predicate)" into a comprehension which filters + // elements in the range, producing a new list from the elements that satisfy the predicate. + FilterMacro = NewReceiverMacro(operators.Filter, 2, MakeFilter, + MacroDocs(`returns a list containing only the elements from the input list`, + `that satisfy the given predicate`), + MacroExamples( + `[1, 2, 3].filter(x, x > 1) // [2, 3]`, + `['cat', 'dog', 'bird', 'fish'].filter(pet, pet.size() == 3) // ['cat', 'dog']`, + `[{'a': 10, 'b': 5, 'c': 20}].map(m, m.filter(key, m[key] > 10)) // [['c']]`, + common.MultilineDescription( + `// filter a list to select only emails with the @cel.dev suffix`, + `['alice@buf.io', 'tristan@cel.dev'].filter(v, v.endsWith('@cel.dev')) // ['tristan@cel.dev']`), + common.MultilineDescription( + `// filter a map into a list, selecting only the values for keys that start with 'http-auth'`, + `{'http-auth-agent': 'secret', 'user-agent': 'mozilla'}.filter(k,`, + ` k.startsWith('http-auth')) // ['secret']`), + )) + + // AllMacros includes the list of all spec-supported macros. + AllMacros = []Macro{ + HasMacro, + AllMacro, + ExistsMacro, + ExistsOneMacro, + ExistsOneMacroNew, + MapMacro, + MapFilterMacro, + FilterMacro, + } + + // NoMacros list. + NoMacros = []Macro{} +) + +// AccumulatorName is the traditional variable name assigned to the fold accumulator variable. +const AccumulatorName = "__result__" + +// HiddenAccumulatorName is a proposed update to the default fold accumlator variable. +// @result is not normally accessible from source, preventing accidental or intentional collisions +// in user expressions. +const HiddenAccumulatorName = "@result" + +type quantifierKind int + +const ( + quantifierAll quantifierKind = iota + quantifierExists + quantifierExistsOne +) + +// MakeAll expands the input call arguments into a comprehension that returns true if all of the +// elements in the range match the predicate expressions: +// .all(, ) +func MakeAll(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + return makeQuantifier(quantifierAll, eh, target, args) +} + +// MakeExists expands the input call arguments into a comprehension that returns true if any of the +// elements in the range match the predicate expressions: +// .exists(, ) +func MakeExists(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + return makeQuantifier(quantifierExists, eh, target, args) +} + +// MakeExistsOne expands the input call arguments into a comprehension that returns true if exactly +// one of the elements in the range match the predicate expressions: +// .exists_one(, ) +func MakeExistsOne(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + return makeQuantifier(quantifierExistsOne, eh, target, args) +} + +// MakeMap expands the input call arguments into a comprehension that transforms each element in the +// input to produce an output list. +// +// There are two call patterns supported by map: +// +// .map(, ) +// .map(, , ) +// +// In the second form only iterVar values which return true when provided to the predicate expression +// are transformed. +func MakeMap(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + v, found := extractIdent(args[0]) + if !found { + return nil, eh.NewError(args[0].ID(), "argument is not an identifier") + } + accu := eh.AccuIdentName() + if v == accu || v == AccumulatorName { + return nil, eh.NewError(args[0].ID(), "iteration variable overwrites accumulator variable") + } + + var fn ast.Expr + var filter ast.Expr + + if len(args) == 3 { + filter = args[1] + fn = args[2] + } else { + filter = nil + fn = args[1] + } + + init := eh.NewList() + condition := eh.NewLiteral(types.True) + step := eh.NewCall(operators.Add, eh.NewAccuIdent(), eh.NewList(fn)) + + if filter != nil { + step = eh.NewCall(operators.Conditional, filter, step, eh.NewAccuIdent()) + } + return eh.NewComprehension(target, v, accu, init, condition, step, eh.NewAccuIdent()), nil +} + +// MakeFilter expands the input call arguments into a comprehension which produces a list which contains +// only elements which match the provided predicate expression: +// .filter(, ) +func MakeFilter(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + v, found := extractIdent(args[0]) + if !found { + return nil, eh.NewError(args[0].ID(), "argument is not an identifier") + } + accu := eh.AccuIdentName() + if v == accu || v == AccumulatorName { + return nil, eh.NewError(args[0].ID(), "iteration variable overwrites accumulator variable") + } + + filter := args[1] + init := eh.NewList() + condition := eh.NewLiteral(types.True) + step := eh.NewCall(operators.Add, eh.NewAccuIdent(), eh.NewList(args[0])) + step = eh.NewCall(operators.Conditional, filter, step, eh.NewAccuIdent()) + return eh.NewComprehension(target, v, accu, init, condition, step, eh.NewAccuIdent()), nil +} + +// MakeHas expands the input call arguments into a presence test, e.g. has(.field) +func MakeHas(eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + if args[0].Kind() == ast.SelectKind { + s := args[0].AsSelect() + return eh.NewPresenceTest(s.Operand(), s.FieldName()), nil + } + return nil, eh.NewError(args[0].ID(), "invalid argument to has() macro") +} + +func makeQuantifier(kind quantifierKind, eh ExprHelper, target ast.Expr, args []ast.Expr) (ast.Expr, *common.Error) { + v, found := extractIdent(args[0]) + if !found { + return nil, eh.NewError(args[0].ID(), "argument must be a simple name") + } + accu := eh.AccuIdentName() + if v == accu || v == AccumulatorName { + return nil, eh.NewError(args[0].ID(), "iteration variable overwrites accumulator variable") + } + + var init ast.Expr + var condition ast.Expr + var step ast.Expr + var result ast.Expr + switch kind { + case quantifierAll: + init = eh.NewLiteral(types.True) + condition = eh.NewCall(operators.NotStrictlyFalse, eh.NewAccuIdent()) + step = eh.NewCall(operators.LogicalAnd, eh.NewAccuIdent(), args[1]) + result = eh.NewAccuIdent() + case quantifierExists: + init = eh.NewLiteral(types.False) + condition = eh.NewCall( + operators.NotStrictlyFalse, + eh.NewCall(operators.LogicalNot, eh.NewAccuIdent())) + step = eh.NewCall(operators.LogicalOr, eh.NewAccuIdent(), args[1]) + result = eh.NewAccuIdent() + case quantifierExistsOne: + init = eh.NewLiteral(types.Int(0)) + condition = eh.NewLiteral(types.True) + step = eh.NewCall(operators.Conditional, args[1], + eh.NewCall(operators.Add, eh.NewAccuIdent(), eh.NewLiteral(types.Int(1))), eh.NewAccuIdent()) + result = eh.NewCall(operators.Equals, eh.NewAccuIdent(), eh.NewLiteral(types.Int(1))) + default: + return nil, eh.NewError(args[0].ID(), fmt.Sprintf("unrecognized quantifier '%v'", kind)) + } + return eh.NewComprehension(target, v, accu, init, condition, step, result), nil +} + +func extractIdent(e ast.Expr) (string, bool) { + switch e.Kind() { + case ast.IdentKind: + return e.AsIdent(), true + } + return "", false +} diff --git a/vendor/github.com/google/cel-go/parser/options.go b/vendor/github.com/google/cel-go/parser/options.go new file mode 100644 index 0000000000..4eb30f83e0 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/options.go @@ -0,0 +1,163 @@ +// Copyright 2021 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import "fmt" + +type options struct { + maxRecursionDepth int + errorReportingLimit int + errorRecoveryTokenLookaheadLimit int + errorRecoveryLimit int + expressionSizeCodePointLimit int + macros map[string]Macro + populateMacroCalls bool + enableOptionalSyntax bool + enableVariadicOperatorASTs bool + enableIdentEscapeSyntax bool + enableHiddenAccumulatorName bool +} + +// Option configures the behavior of the parser. +type Option func(*options) error + +// MaxRecursionDepth limits the maximum depth the parser will attempt to parse the expression before giving up. +func MaxRecursionDepth(limit int) Option { + return func(opts *options) error { + if limit < -1 { + return fmt.Errorf("max recursion depth must be greater than or equal to -1: %d", limit) + } + opts.maxRecursionDepth = limit + return nil + } +} + +// ErrorRecoveryLookaheadTokenLimit limits the number of lexer tokens that may be considered during error recovery. +// +// Error recovery often involves looking ahead in the input to determine if there's a point at which parsing may +// successfully resume. In some pathological cases, the parser can look through quite a large set of input which +// in turn generates a lot of back-tracking and performance degredation. +// +// The limit must be >= 1, and is recommended to be less than the default of 256. +func ErrorRecoveryLookaheadTokenLimit(limit int) Option { + return func(opts *options) error { + if limit < 1 { + return fmt.Errorf("error recovery lookahead token limit must be at least 1: %d", limit) + } + opts.errorRecoveryTokenLookaheadLimit = limit + return nil + } +} + +// ErrorRecoveryLimit limits the number of attempts the parser will perform to recover from an error. +func ErrorRecoveryLimit(limit int) Option { + return func(opts *options) error { + if limit < -1 { + return fmt.Errorf("error recovery limit must be greater than or equal to -1: %d", limit) + } + opts.errorRecoveryLimit = limit + return nil + } +} + +// ErrorReportingLimit limits the number of syntax error reports before terminating parsing. +// +// The limit must be at least 1. If unset, the limit will be 100. +func ErrorReportingLimit(limit int) Option { + return func(opts *options) error { + if limit < 1 { + return fmt.Errorf("error reporting limit must be at least 1: %d", limit) + } + opts.errorReportingLimit = limit + return nil + } +} + +// ExpressionSizeCodePointLimit is an option which limits the maximum code point count of an +// expression. +func ExpressionSizeCodePointLimit(expressionSizeCodePointLimit int) Option { + return func(opts *options) error { + if expressionSizeCodePointLimit < -1 { + return fmt.Errorf("expression size code point limit must be greater than or equal to -1: %d", expressionSizeCodePointLimit) + } + opts.expressionSizeCodePointLimit = expressionSizeCodePointLimit + return nil + } +} + +// Macros adds the given macros to the parser. +func Macros(macros ...Macro) Option { + return func(opts *options) error { + for _, m := range macros { + if m != nil { + if opts.macros == nil { + opts.macros = make(map[string]Macro) + } + opts.macros[m.MacroKey()] = m + } + } + return nil + } +} + +// PopulateMacroCalls ensures that the original call signatures replaced by expanded macros +// are preserved in the `SourceInfo` of parse result. +func PopulateMacroCalls(populateMacroCalls bool) Option { + return func(opts *options) error { + opts.populateMacroCalls = populateMacroCalls + return nil + } +} + +// EnableOptionalSyntax enables syntax for optional field and index selection. +func EnableOptionalSyntax(optionalSyntax bool) Option { + return func(opts *options) error { + opts.enableOptionalSyntax = optionalSyntax + return nil + } +} + +// EnableIdentEscapeSyntax enables backtick (`) escaped field identifiers. This +// supports extended types of characters in identifiers, e.g. foo.`baz-bar`. +func EnableIdentEscapeSyntax(enableIdentEscapeSyntax bool) Option { + return func(opts *options) error { + opts.enableIdentEscapeSyntax = enableIdentEscapeSyntax + return nil + } +} + +// EnableHiddenAccumulatorName uses an accumulator variable name that is not a +// normally accessible identifier in source for comprehension macros. Compatibility notes: +// with this option enabled, a parsed AST would be semantically the same as if disabled, but would +// have different internal identifiers in any of the built-in comprehension sub-expressions. When +// disabled, it is possible but almost certainly a logic error to access the accumulator variable. +func EnableHiddenAccumulatorName(enabled bool) Option { + return func(opts *options) error { + opts.enableHiddenAccumulatorName = enabled + return nil + } +} + +// EnableVariadicOperatorASTs enables a compact representation of chained like-kind commutative +// operators. e.g. `a || b || c || d` -> `call(op='||', args=[a, b, c, d])` +// +// The benefit of enabling variadic operators ASTs is a more compact representation deeply nested +// logic graphs. +func EnableVariadicOperatorASTs(varArgASTs bool) Option { + return func(opts *options) error { + opts.enableVariadicOperatorASTs = varArgASTs + return nil + } +} diff --git a/vendor/github.com/google/cel-go/parser/parser.go b/vendor/github.com/google/cel-go/parser/parser.go new file mode 100644 index 0000000000..b5ec73ec64 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/parser.go @@ -0,0 +1,1065 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package parser declares an expression parser with support for macro +// expansion. +package parser + +import ( + "errors" + "fmt" + "regexp" + "strconv" + "strings" + + antlr "github.com/antlr4-go/antlr/v4" + + "github.com/google/cel-go/common" + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/runes" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/parser/gen" +) + +// Parser encapsulates the context necessary to perform parsing for different expressions. +type Parser struct { + options +} + +// NewParser builds and returns a new Parser using the provided options. +func NewParser(opts ...Option) (*Parser, error) { + p := &Parser{} + p.enableHiddenAccumulatorName = true + for _, opt := range opts { + if err := opt(&p.options); err != nil { + return nil, err + } + } + if p.errorReportingLimit == 0 { + p.errorReportingLimit = 100 + } + if p.maxRecursionDepth == 0 { + p.maxRecursionDepth = 250 + } + if p.maxRecursionDepth == -1 { + p.maxRecursionDepth = int((^uint(0)) >> 1) + } + if p.errorRecoveryTokenLookaheadLimit == 0 { + p.errorRecoveryTokenLookaheadLimit = 256 + } + if p.errorRecoveryLimit == 0 { + p.errorRecoveryLimit = 30 + } + if p.errorRecoveryLimit == -1 { + p.errorRecoveryLimit = int((^uint(0)) >> 1) + } + if p.expressionSizeCodePointLimit == 0 { + p.expressionSizeCodePointLimit = 100_000 + } + if p.expressionSizeCodePointLimit == -1 { + p.expressionSizeCodePointLimit = int((^uint(0)) >> 1) + } + // Bool is false by default, so populateMacroCalls will be false by default + return p, nil +} + +// mustNewParser does the work of NewParser and panics if an error occurs. +// +// This function is only intended for internal use and is for backwards compatibility in Parse and +// ParseWithMacros, where we know the options will result in an error. +func mustNewParser(opts ...Option) *Parser { + p, err := NewParser(opts...) + if err != nil { + panic(err) + } + return p +} + +// Parse parses the expression represented by source and returns the result. +func (p *Parser) Parse(source common.Source) (*ast.AST, *common.Errors) { + errs := common.NewErrors(source) + accu := AccumulatorName + if p.enableHiddenAccumulatorName { + accu = HiddenAccumulatorName + } + fac := ast.NewExprFactoryWithAccumulator(accu) + impl := parser{ + errors: &parseErrors{errs}, + exprFactory: fac, + helper: newParserHelper(source, fac), + macros: p.macros, + maxRecursionDepth: p.maxRecursionDepth, + errorReportingLimit: p.errorReportingLimit, + errorRecoveryLimit: p.errorRecoveryLimit, + errorRecoveryLookaheadTokenLimit: p.errorRecoveryTokenLookaheadLimit, + populateMacroCalls: p.populateMacroCalls, + enableOptionalSyntax: p.enableOptionalSyntax, + enableVariadicOperatorASTs: p.enableVariadicOperatorASTs, + enableIdentEscapeSyntax: p.enableIdentEscapeSyntax, + } + buf, ok := source.(runes.Buffer) + if !ok { + buf = runes.NewBuffer(source.Content()) + } + var out ast.Expr + if buf.Len() > p.expressionSizeCodePointLimit { + out = impl.reportError(common.NoLocation, + "expression code point size exceeds limit: size: %d, limit %d", + buf.Len(), p.expressionSizeCodePointLimit) + } else { + out = impl.parse(buf, source.Description()) + } + return ast.NewAST(out, impl.helper.getSourceInfo()), errs +} + +// reservedIds are not legal to use as variables. We exclude them post-parse, as they *are* valid +// field names for protos, and it would complicate the grammar to distinguish the cases. +var reservedIds = map[string]struct{}{ + "as": {}, + "break": {}, + "const": {}, + "continue": {}, + "else": {}, + "false": {}, + "for": {}, + "function": {}, + "if": {}, + "import": {}, + "in": {}, + "let": {}, + "loop": {}, + "package": {}, + "namespace": {}, + "null": {}, + "return": {}, + "true": {}, + "var": {}, + "void": {}, + "while": {}, +} + +func unescapeIdent(in string) (string, error) { + if len(in) <= 2 { + return "", errors.New("invalid escaped identifier: underflow") + } + return in[1 : len(in)-1], nil +} + +// normalizeIdent returns the interpreted identifier. +func (p *parser) normalizeIdent(ctx gen.IEscapeIdentContext) (string, error) { + switch ident := ctx.(type) { + case *gen.SimpleIdentifierContext: + return ident.GetId().GetText(), nil + case *gen.EscapedIdentifierContext: + if !p.enableIdentEscapeSyntax { + return "", errors.New("unsupported syntax: '`'") + } + return unescapeIdent(ident.GetId().GetText()) + } + return "", errors.New("unsupported ident kind") +} + +// Parse converts a source input a parsed expression. +// This function calls ParseWithMacros with AllMacros. +// +// Deprecated: Use NewParser().Parse() instead. +func Parse(source common.Source) (*ast.AST, *common.Errors) { + return mustNewParser(Macros(AllMacros...)).Parse(source) +} + +type recursionError struct { + message string +} + +// Error implements error. +func (re *recursionError) Error() string { + return re.message +} + +var _ error = &recursionError{} + +type recursionListener struct { + maxDepth int + ruleTypeDepth map[int]*int +} + +func (rl *recursionListener) VisitTerminal(node antlr.TerminalNode) {} + +func (rl *recursionListener) VisitErrorNode(node antlr.ErrorNode) {} + +func (rl *recursionListener) EnterEveryRule(ctx antlr.ParserRuleContext) { + if ctx == nil { + return + } + ruleIndex := ctx.GetRuleIndex() + depth, found := rl.ruleTypeDepth[ruleIndex] + if !found { + var counter = 1 + rl.ruleTypeDepth[ruleIndex] = &counter + depth = &counter + } else { + *depth++ + } + if *depth > rl.maxDepth { + panic(&recursionError{ + message: fmt.Sprintf("expression recursion limit exceeded: %d", rl.maxDepth), + }) + } +} + +func (rl *recursionListener) ExitEveryRule(ctx antlr.ParserRuleContext) { + if ctx == nil { + return + } + ruleIndex := ctx.GetRuleIndex() + if depth, found := rl.ruleTypeDepth[ruleIndex]; found && *depth > 0 { + *depth-- + } +} + +var _ antlr.ParseTreeListener = &recursionListener{} + +type tooManyErrors struct { + errorReportingLimit int +} + +func (t *tooManyErrors) Error() string { + return fmt.Sprintf("More than %d syntax errors", t.errorReportingLimit) +} + +var _ error = &tooManyErrors{} + +type recoveryLimitError struct { + message string +} + +// Error implements error. +func (rl *recoveryLimitError) Error() string { + return rl.message +} + +type lookaheadLimitError struct { + message string +} + +func (ll *lookaheadLimitError) Error() string { + return ll.message +} + +var _ error = &recoveryLimitError{} + +type recoveryLimitErrorStrategy struct { + *antlr.DefaultErrorStrategy + errorRecoveryLimit int + errorRecoveryTokenLookaheadLimit int + recoveryAttempts int +} + +type lookaheadConsumer struct { + antlr.Parser + errorRecoveryTokenLookaheadLimit int + lookaheadAttempts int +} + +func (lc *lookaheadConsumer) Consume() antlr.Token { + if lc.lookaheadAttempts >= lc.errorRecoveryTokenLookaheadLimit { + panic(&lookaheadLimitError{ + message: fmt.Sprintf("error recovery token lookahead limit exceeded: %d", lc.errorRecoveryTokenLookaheadLimit), + }) + } + lc.lookaheadAttempts++ + return lc.Parser.Consume() +} + +func (rl *recoveryLimitErrorStrategy) Recover(recognizer antlr.Parser, e antlr.RecognitionException) { + rl.checkAttempts(recognizer) + lc := &lookaheadConsumer{Parser: recognizer, errorRecoveryTokenLookaheadLimit: rl.errorRecoveryTokenLookaheadLimit} + rl.DefaultErrorStrategy.Recover(lc, e) +} + +func (rl *recoveryLimitErrorStrategy) RecoverInline(recognizer antlr.Parser) antlr.Token { + rl.checkAttempts(recognizer) + lc := &lookaheadConsumer{Parser: recognizer, errorRecoveryTokenLookaheadLimit: rl.errorRecoveryTokenLookaheadLimit} + return rl.DefaultErrorStrategy.RecoverInline(lc) +} + +func (rl *recoveryLimitErrorStrategy) checkAttempts(recognizer antlr.Parser) { + if rl.recoveryAttempts == rl.errorRecoveryLimit { + rl.recoveryAttempts++ + msg := fmt.Sprintf("error recovery attempt limit exceeded: %d", rl.errorRecoveryLimit) + recognizer.NotifyErrorListeners(msg, nil, nil) + panic(&recoveryLimitError{ + message: msg, + }) + } + rl.recoveryAttempts++ +} + +var _ antlr.ErrorStrategy = &recoveryLimitErrorStrategy{} + +type parser struct { + gen.BaseCELVisitor + errors *parseErrors + exprFactory ast.ExprFactory + helper *parserHelper + macros map[string]Macro + recursionDepth int + errorReports int + maxRecursionDepth int + errorReportingLimit int + errorRecoveryLimit int + errorRecoveryLookaheadTokenLimit int + populateMacroCalls bool + enableOptionalSyntax bool + enableVariadicOperatorASTs bool + enableIdentEscapeSyntax bool +} + +var _ gen.CELVisitor = (*parser)(nil) + +func (p *parser) parse(expr runes.Buffer, desc string) ast.Expr { + lexer := gen.NewCELLexer(newCharStream(expr, desc)) + lexer.RemoveErrorListeners() + lexer.AddErrorListener(p) + + prsr := gen.NewCELParser(antlr.NewCommonTokenStream(lexer, 0)) + prsr.RemoveErrorListeners() + + prsrListener := &recursionListener{ + maxDepth: p.maxRecursionDepth, + ruleTypeDepth: map[int]*int{}, + } + + prsr.AddErrorListener(p) + prsr.AddParseListener(prsrListener) + + prsr.SetErrorHandler(&recoveryLimitErrorStrategy{ + DefaultErrorStrategy: antlr.NewDefaultErrorStrategy(), + errorRecoveryLimit: p.errorRecoveryLimit, + errorRecoveryTokenLookaheadLimit: p.errorRecoveryLookaheadTokenLimit, + }) + + defer func() { + if val := recover(); val != nil { + switch err := val.(type) { + case *lookaheadLimitError: + p.errors.internalError(err.Error()) + case *recursionError: + p.errors.internalError(err.Error()) + case *tooManyErrors: + // do nothing + case *recoveryLimitError: + // do nothing, listeners already notified and error reported. + default: + panic(val) + } + } + }() + + return p.Visit(prsr.Start_()).(ast.Expr) +} + +// Visitor implementations. +func (p *parser) Visit(tree antlr.ParseTree) any { + t := unnest(tree) + switch tree := t.(type) { + case *gen.StartContext: + return p.VisitStart(tree) + case *gen.ExprContext: + p.checkAndIncrementRecursionDepth() + out := p.VisitExpr(tree) + p.decrementRecursionDepth() + return out + case *gen.ConditionalAndContext: + return p.VisitConditionalAnd(tree) + case *gen.ConditionalOrContext: + return p.VisitConditionalOr(tree) + case *gen.RelationContext: + p.checkAndIncrementRecursionDepth() + out := p.VisitRelation(tree) + p.decrementRecursionDepth() + return out + case *gen.CalcContext: + p.checkAndIncrementRecursionDepth() + out := p.VisitCalc(tree) + p.decrementRecursionDepth() + return out + case *gen.LogicalNotContext: + return p.VisitLogicalNot(tree) + case *gen.IdentContext: + return p.VisitIdent(tree) + case *gen.GlobalCallContext: + return p.VisitGlobalCall(tree) + case *gen.SelectContext: + p.checkAndIncrementRecursionDepth() + out := p.VisitSelect(tree) + p.decrementRecursionDepth() + return out + case *gen.MemberCallContext: + p.checkAndIncrementRecursionDepth() + out := p.VisitMemberCall(tree) + p.decrementRecursionDepth() + return out + case *gen.MapInitializerListContext: + return p.VisitMapInitializerList(tree) + case *gen.NegateContext: + return p.VisitNegate(tree) + case *gen.IndexContext: + p.checkAndIncrementRecursionDepth() + out := p.VisitIndex(tree) + p.decrementRecursionDepth() + return out + case *gen.UnaryContext: + return p.VisitUnary(tree) + case *gen.CreateListContext: + return p.VisitCreateList(tree) + case *gen.CreateMessageContext: + return p.VisitCreateMessage(tree) + case *gen.CreateStructContext: + return p.VisitCreateStruct(tree) + case *gen.IntContext: + return p.VisitInt(tree) + case *gen.UintContext: + return p.VisitUint(tree) + case *gen.DoubleContext: + return p.VisitDouble(tree) + case *gen.StringContext: + return p.VisitString(tree) + case *gen.BytesContext: + return p.VisitBytes(tree) + case *gen.BoolFalseContext: + return p.VisitBoolFalse(tree) + case *gen.BoolTrueContext: + return p.VisitBoolTrue(tree) + case *gen.NullContext: + return p.VisitNull(tree) + } + + // Report at least one error if the parser reaches an unknown parse element. + // Typically, this happens if the parser has already encountered a syntax error elsewhere. + if p.errors.errorCount() == 0 { + txt := "<>" + if t != nil { + txt = fmt.Sprintf("<<%T>>", t) + } + return p.reportError(common.NoLocation, "unknown parse element encountered: %s", txt) + } + return p.helper.newExpr(common.NoLocation) + +} + +// Visit a parse tree produced by CELParser#start. +func (p *parser) VisitStart(ctx *gen.StartContext) any { + return p.Visit(ctx.Expr()) +} + +// Visit a parse tree produced by CELParser#expr. +func (p *parser) VisitExpr(ctx *gen.ExprContext) any { + result := p.Visit(ctx.GetE()).(ast.Expr) + if ctx.GetOp() == nil { + return result + } + opID := p.helper.id(ctx.GetOp()) + ifTrue := p.Visit(ctx.GetE1()).(ast.Expr) + ifFalse := p.Visit(ctx.GetE2()).(ast.Expr) + return p.globalCallOrMacro(opID, operators.Conditional, result, ifTrue, ifFalse) +} + +// Visit a parse tree produced by CELParser#conditionalOr. +func (p *parser) VisitConditionalOr(ctx *gen.ConditionalOrContext) any { + result := p.Visit(ctx.GetE()).(ast.Expr) + l := p.newLogicManager(operators.LogicalOr, result) + rest := ctx.GetE1() + for i, op := range ctx.GetOps() { + if i >= len(rest) { + return p.reportError(ctx, "unexpected character, wanted '||'") + } + next := p.Visit(rest[i]).(ast.Expr) + opID := p.helper.id(op) + l.addTerm(opID, next) + } + return l.toExpr() +} + +// Visit a parse tree produced by CELParser#conditionalAnd. +func (p *parser) VisitConditionalAnd(ctx *gen.ConditionalAndContext) any { + result := p.Visit(ctx.GetE()).(ast.Expr) + l := p.newLogicManager(operators.LogicalAnd, result) + rest := ctx.GetE1() + for i, op := range ctx.GetOps() { + if i >= len(rest) { + return p.reportError(ctx, "unexpected character, wanted '&&'") + } + next := p.Visit(rest[i]).(ast.Expr) + opID := p.helper.id(op) + l.addTerm(opID, next) + } + return l.toExpr() +} + +// Visit a parse tree produced by CELParser#relation. +func (p *parser) VisitRelation(ctx *gen.RelationContext) any { + opText := "" + if ctx.GetOp() != nil { + opText = ctx.GetOp().GetText() + } + if op, found := operators.Find(opText); found { + lhs := p.Visit(ctx.Relation(0)).(ast.Expr) + opID := p.helper.id(ctx.GetOp()) + rhs := p.Visit(ctx.Relation(1)).(ast.Expr) + return p.globalCallOrMacro(opID, op, lhs, rhs) + } + return p.reportError(ctx, "operator not found") +} + +// Visit a parse tree produced by CELParser#calc. +func (p *parser) VisitCalc(ctx *gen.CalcContext) any { + opText := "" + if ctx.GetOp() != nil { + opText = ctx.GetOp().GetText() + } + if op, found := operators.Find(opText); found { + lhs := p.Visit(ctx.Calc(0)).(ast.Expr) + opID := p.helper.id(ctx.GetOp()) + rhs := p.Visit(ctx.Calc(1)).(ast.Expr) + return p.globalCallOrMacro(opID, op, lhs, rhs) + } + return p.reportError(ctx, "operator not found") +} + +func (p *parser) VisitUnary(ctx *gen.UnaryContext) any { + return p.helper.newLiteralString(ctx, "<>") +} + +// Visit a parse tree produced by CELParser#LogicalNot. +func (p *parser) VisitLogicalNot(ctx *gen.LogicalNotContext) any { + if len(ctx.GetOps())%2 == 0 { + return p.Visit(ctx.Member()) + } + opID := p.helper.id(ctx.GetOps()[0]) + target := p.Visit(ctx.Member()).(ast.Expr) + return p.globalCallOrMacro(opID, operators.LogicalNot, target) +} + +func (p *parser) VisitNegate(ctx *gen.NegateContext) any { + if len(ctx.GetOps())%2 == 0 { + return p.Visit(ctx.Member()) + } + opID := p.helper.id(ctx.GetOps()[0]) + target := p.Visit(ctx.Member()).(ast.Expr) + return p.globalCallOrMacro(opID, operators.Negate, target) +} + +// VisitSelect visits a parse tree produced by CELParser#Select. +func (p *parser) VisitSelect(ctx *gen.SelectContext) any { + operand := p.Visit(ctx.Member()).(ast.Expr) + // Handle the error case where no valid identifier is specified. + if ctx.GetId() == nil || ctx.GetOp() == nil { + return p.helper.newExpr(ctx) + } + id, err := p.normalizeIdent(ctx.GetId()) + if err != nil { + p.reportError(ctx.GetId(), "%v", err) + } + if ctx.GetOpt() != nil { + if !p.enableOptionalSyntax { + return p.reportError(ctx.GetOp(), "unsupported syntax '.?'") + } + return p.helper.newGlobalCall( + ctx.GetOp(), + operators.OptSelect, + operand, + p.helper.newLiteralString(ctx.GetId(), id)) + } + return p.helper.newSelect(ctx.GetOp(), operand, id) +} + +// VisitMemberCall visits a parse tree produced by CELParser#MemberCall. +func (p *parser) VisitMemberCall(ctx *gen.MemberCallContext) any { + operand := p.Visit(ctx.Member()).(ast.Expr) + // Handle the error case where no valid identifier is specified. + if ctx.GetId() == nil { + return p.helper.newExpr(ctx) + } + id := ctx.GetId().GetText() + opID := p.helper.id(ctx.GetOpen()) + return p.receiverCallOrMacro(opID, id, operand, p.visitExprList(ctx.GetArgs())...) +} + +// Visit a parse tree produced by CELParser#Index. +func (p *parser) VisitIndex(ctx *gen.IndexContext) any { + target := p.Visit(ctx.Member()).(ast.Expr) + // Handle the error case where no valid identifier is specified. + if ctx.GetOp() == nil { + return p.helper.newExpr(ctx) + } + opID := p.helper.id(ctx.GetOp()) + index := p.Visit(ctx.GetIndex()).(ast.Expr) + operator := operators.Index + if ctx.GetOpt() != nil { + if !p.enableOptionalSyntax { + return p.reportError(ctx.GetOp(), "unsupported syntax '[?'") + } + operator = operators.OptIndex + } + return p.globalCallOrMacro(opID, operator, target, index) +} + +// Visit a parse tree produced by CELParser#CreateMessage. +func (p *parser) VisitCreateMessage(ctx *gen.CreateMessageContext) any { + messageName := "" + for _, id := range ctx.GetIds() { + if len(messageName) != 0 { + messageName += "." + } + messageName += id.GetText() + } + if ctx.GetLeadingDot() != nil { + messageName = "." + messageName + } + objID := p.helper.id(ctx.GetOp()) + entries := p.VisitIFieldInitializerList(ctx.GetEntries()).([]ast.EntryExpr) + return p.helper.newObject(objID, messageName, entries...) +} + +// Visit a parse tree of field initializers. +func (p *parser) VisitIFieldInitializerList(ctx gen.IFieldInitializerListContext) any { + if ctx == nil || ctx.GetFields() == nil { + // This is the result of a syntax error handled elswhere, return empty. + return []ast.EntryExpr{} + } + + result := make([]ast.EntryExpr, len(ctx.GetFields())) + cols := ctx.GetCols() + vals := ctx.GetValues() + for i, f := range ctx.GetFields() { + if i >= len(cols) || i >= len(vals) { + // This is the result of a syntax error detected elsewhere. + return []ast.EntryExpr{} + } + initID := p.helper.id(cols[i]) + optField := f.(*gen.OptFieldContext) + optional := optField.GetOpt() != nil + if !p.enableOptionalSyntax && optional { + p.reportError(optField, "unsupported syntax '?'") + continue + } + + // The field may be empty due to a prior error. + fieldName, err := p.normalizeIdent(optField.EscapeIdent()) + if err != nil { + p.reportError(ctx, "%v", err) + continue + } + + value := p.Visit(vals[i]).(ast.Expr) + field := p.helper.newObjectField(initID, fieldName, value, optional) + result[i] = field + } + return result +} + +// Visit a parse tree produced by CELParser#Ident. +func (p *parser) VisitIdent(ctx *gen.IdentContext) any { + identName := "" + if ctx.GetLeadingDot() != nil { + identName = "." + } + // Handle the error case where no valid identifier is specified. + if ctx.GetId() == nil { + return p.helper.newExpr(ctx) + } + // Handle reserved identifiers. + id := ctx.GetId().GetText() + if _, ok := reservedIds[id]; ok { + return p.reportError(ctx, "reserved identifier: %s", id) + } + identName += id + return p.helper.newIdent(ctx.GetId(), identName) +} + +// Visit a parse tree produced by CELParser#GlobalCallContext. +func (p *parser) VisitGlobalCall(ctx *gen.GlobalCallContext) any { + identName := "" + if ctx.GetLeadingDot() != nil { + identName = "." + } + // Handle the error case where no valid identifier is specified. + if ctx.GetId() == nil { + return p.helper.newExpr(ctx) + } + // Handle reserved identifiers. + id := ctx.GetId().GetText() + if _, ok := reservedIds[id]; ok { + return p.reportError(ctx, "reserved identifier: %s", id) + } + identName += id + opID := p.helper.id(ctx.GetOp()) + return p.globalCallOrMacro(opID, identName, p.visitExprList(ctx.GetArgs())...) + +} + +// Visit a parse tree produced by CELParser#CreateList. +func (p *parser) VisitCreateList(ctx *gen.CreateListContext) any { + listID := p.helper.id(ctx.GetOp()) + elems, optionals := p.visitListInit(ctx.GetElems()) + return p.helper.newList(listID, elems, optionals...) +} + +// Visit a parse tree produced by CELParser#CreateStruct. +func (p *parser) VisitCreateStruct(ctx *gen.CreateStructContext) any { + structID := p.helper.id(ctx.GetOp()) + entries := []ast.EntryExpr{} + if ctx.GetEntries() != nil { + entries = p.Visit(ctx.GetEntries()).([]ast.EntryExpr) + } + return p.helper.newMap(structID, entries...) +} + +// Visit a parse tree produced by CELParser#mapInitializerList. +func (p *parser) VisitMapInitializerList(ctx *gen.MapInitializerListContext) any { + if ctx == nil || ctx.GetKeys() == nil { + // This is the result of a syntax error handled elswhere, return empty. + return []ast.EntryExpr{} + } + + result := make([]ast.EntryExpr, len(ctx.GetCols())) + keys := ctx.GetKeys() + vals := ctx.GetValues() + for i, col := range ctx.GetCols() { + colID := p.helper.id(col) + if i >= len(keys) || i >= len(vals) { + // This is the result of a syntax error detected elsewhere. + return []ast.EntryExpr{} + } + optKey := keys[i] + optional := optKey.GetOpt() != nil + if !p.enableOptionalSyntax && optional { + p.reportError(optKey, "unsupported syntax '?'") + continue + } + key := p.Visit(optKey.GetE()).(ast.Expr) + value := p.Visit(vals[i]).(ast.Expr) + entry := p.helper.newMapEntry(colID, key, value, optional) + result[i] = entry + } + return result +} + +// Visit a parse tree produced by CELParser#Int. +func (p *parser) VisitInt(ctx *gen.IntContext) any { + text := ctx.GetTok().GetText() + base := 10 + if strings.HasPrefix(text, "0x") { + base = 16 + text = text[2:] + } + if ctx.GetSign() != nil { + text = ctx.GetSign().GetText() + text + } + i, err := strconv.ParseInt(text, base, 64) + if err != nil { + return p.reportError(ctx, "invalid int literal") + } + return p.helper.newLiteralInt(ctx, i) +} + +// Visit a parse tree produced by CELParser#Uint. +func (p *parser) VisitUint(ctx *gen.UintContext) any { + text := ctx.GetTok().GetText() + // trim the 'u' designator included in the uint literal. + text = text[:len(text)-1] + base := 10 + if strings.HasPrefix(text, "0x") { + base = 16 + text = text[2:] + } + i, err := strconv.ParseUint(text, base, 64) + if err != nil { + return p.reportError(ctx, "invalid uint literal") + } + return p.helper.newLiteralUint(ctx, i) +} + +// Visit a parse tree produced by CELParser#Double. +func (p *parser) VisitDouble(ctx *gen.DoubleContext) any { + txt := ctx.GetTok().GetText() + if ctx.GetSign() != nil { + txt = ctx.GetSign().GetText() + txt + } + f, err := strconv.ParseFloat(txt, 64) + if err != nil { + return p.reportError(ctx, "invalid double literal") + } + return p.helper.newLiteralDouble(ctx, f) + +} + +// Visit a parse tree produced by CELParser#String. +func (p *parser) VisitString(ctx *gen.StringContext) any { + s := p.unquote(ctx, ctx.GetTok().GetText(), false) + return p.helper.newLiteralString(ctx, s) +} + +// Visit a parse tree produced by CELParser#Bytes. +func (p *parser) VisitBytes(ctx *gen.BytesContext) any { + b := []byte(p.unquote(ctx, ctx.GetTok().GetText()[1:], true)) + return p.helper.newLiteralBytes(ctx, b) +} + +// Visit a parse tree produced by CELParser#BoolTrue. +func (p *parser) VisitBoolTrue(ctx *gen.BoolTrueContext) any { + return p.helper.newLiteralBool(ctx, true) +} + +// Visit a parse tree produced by CELParser#BoolFalse. +func (p *parser) VisitBoolFalse(ctx *gen.BoolFalseContext) any { + return p.helper.newLiteralBool(ctx, false) +} + +// Visit a parse tree produced by CELParser#Null. +func (p *parser) VisitNull(ctx *gen.NullContext) any { + return p.helper.exprFactory.NewLiteral(p.helper.newID(ctx), types.NullValue) +} + +func (p *parser) visitExprList(ctx gen.IExprListContext) []ast.Expr { + if ctx == nil { + return []ast.Expr{} + } + return p.visitSlice(ctx.GetE()) +} + +func (p *parser) visitListInit(ctx gen.IListInitContext) ([]ast.Expr, []int32) { + if ctx == nil { + return []ast.Expr{}, []int32{} + } + elements := ctx.GetElems() + result := make([]ast.Expr, len(elements)) + optionals := []int32{} + for i, e := range elements { + ex := p.Visit(e.GetE()).(ast.Expr) + if ex == nil { + return []ast.Expr{}, []int32{} + } + result[i] = ex + if e.GetOpt() != nil { + if !p.enableOptionalSyntax { + p.reportError(e.GetOpt(), "unsupported syntax '?'") + continue + } + optionals = append(optionals, int32(i)) + } + } + return result, optionals +} + +func (p *parser) visitSlice(expressions []gen.IExprContext) []ast.Expr { + if expressions == nil { + return []ast.Expr{} + } + result := make([]ast.Expr, len(expressions)) + for i, e := range expressions { + ex := p.Visit(e).(ast.Expr) + result[i] = ex + } + return result +} + +func (p *parser) unquote(ctx any, value string, isBytes bool) string { + text, err := unescape(value, isBytes) + if err != nil { + p.reportError(ctx, "%s", err.Error()) + return value + } + return text +} + +func (p *parser) newLogicManager(function string, term ast.Expr) *logicManager { + if p.enableVariadicOperatorASTs { + return newVariadicLogicManager(p.exprFactory, function, term) + } + return newBalancingLogicManager(p.exprFactory, function, term) +} + +func (p *parser) reportError(ctx any, format string, args ...any) ast.Expr { + var location common.Location + err := p.helper.newExpr(ctx) + switch c := ctx.(type) { + case common.Location: + location = c + case antlr.Token, antlr.ParserRuleContext: + location = p.helper.getLocation(err.ID()) + } + // Provide arguments to the report error. + p.errors.reportErrorAtID(err.ID(), location, format, args...) + return err +} + +// ANTLR Parse listener implementations +func (p *parser) SyntaxError(recognizer antlr.Recognizer, offendingSymbol any, line, column int, msg string, e antlr.RecognitionException) { + offset := p.helper.sourceInfo.ComputeOffset(int32(line), int32(column)) + l := p.helper.getLocationByOffset(offset) + // Hack to keep existing error messages consistent with previous versions of CEL when a reserved word + // is used as an identifier. This behavior needs to be overhauled to provide consistent, normalized error + // messages out of ANTLR to prevent future breaking changes related to error message content. + if strings.Contains(msg, "no viable alternative") { + msg = reservedIdentifier.ReplaceAllString(msg, mismatchedReservedIdentifier) + } + // Ensure that no more than 100 syntax errors are reported as this will halt attempts to recover from a + // seriously broken expression. + if p.errorReports < p.errorReportingLimit { + p.errorReports++ + p.errors.syntaxError(l, msg) + } else { + tme := &tooManyErrors{errorReportingLimit: p.errorReportingLimit} + p.errors.syntaxError(l, tme.Error()) + panic(tme) + } +} + +func (p *parser) ReportAmbiguity(recognizer antlr.Parser, dfa *antlr.DFA, startIndex, stopIndex int, exact bool, ambigAlts *antlr.BitSet, configs *antlr.ATNConfigSet) { + // Intentional +} + +func (p *parser) ReportAttemptingFullContext(recognizer antlr.Parser, dfa *antlr.DFA, startIndex, stopIndex int, conflictingAlts *antlr.BitSet, configs *antlr.ATNConfigSet) { + // Intentional +} + +func (p *parser) ReportContextSensitivity(recognizer antlr.Parser, dfa *antlr.DFA, startIndex, stopIndex, prediction int, configs *antlr.ATNConfigSet) { + // Intentional +} + +func (p *parser) globalCallOrMacro(exprID int64, function string, args ...ast.Expr) ast.Expr { + if expr, found := p.expandMacro(exprID, function, nil, args...); found { + return expr + } + return p.helper.newGlobalCall(exprID, function, args...) +} + +func (p *parser) receiverCallOrMacro(exprID int64, function string, target ast.Expr, args ...ast.Expr) ast.Expr { + if expr, found := p.expandMacro(exprID, function, target, args...); found { + return expr + } + return p.helper.newReceiverCall(exprID, function, target, args...) +} + +func (p *parser) expandMacro(exprID int64, function string, target ast.Expr, args ...ast.Expr) (ast.Expr, bool) { + macro, found := p.macros[makeMacroKey(function, len(args), target != nil)] + if !found { + macro, found = p.macros[makeVarArgMacroKey(function, target != nil)] + if !found { + return nil, false + } + } + eh := exprHelperPool.Get().(*exprHelper) + defer exprHelperPool.Put(eh) + eh.parserHelper = p.helper + eh.id = exprID + expr, err := macro.Expander()(eh, target, args) + // An error indicates that the macro was matched, but the arguments were not well-formed. + if err != nil { + loc := err.Location + if loc == nil { + loc = p.helper.getLocation(exprID) + } + p.helper.deleteID(exprID) + return p.reportError(loc, "%s", err.Message), true + } + // A nil value from the macro indicates that the macro implementation decided that + // an expansion should not be performed. + if expr == nil { + return nil, false + } + if p.populateMacroCalls { + p.helper.addMacroCall(expr.ID(), function, target, args...) + } + p.helper.deleteID(exprID) + return expr, true +} + +func (p *parser) checkAndIncrementRecursionDepth() { + p.recursionDepth++ + if p.recursionDepth > p.maxRecursionDepth { + panic(&recursionError{message: "max recursion depth exceeded"}) + } +} + +func (p *parser) decrementRecursionDepth() { + p.recursionDepth-- +} + +// unnest traverses down the left-hand side of the parse graph until it encounters the first compound +// parse node or the first leaf in the parse graph. +func unnest(tree antlr.ParseTree) antlr.ParseTree { + for tree != nil { + switch t := tree.(type) { + case *gen.ExprContext: + // conditionalOr op='?' conditionalOr : expr + if t.GetOp() != nil { + return t + } + // conditionalOr + tree = t.GetE() + case *gen.ConditionalOrContext: + // conditionalAnd (ops=|| conditionalAnd)* + if t.GetOps() != nil && len(t.GetOps()) > 0 { + return t + } + // conditionalAnd + tree = t.GetE() + case *gen.ConditionalAndContext: + // relation (ops=&& relation)* + if t.GetOps() != nil && len(t.GetOps()) > 0 { + return t + } + // relation + tree = t.GetE() + case *gen.RelationContext: + // relation op relation + if t.GetOp() != nil { + return t + } + // calc + tree = t.Calc() + case *gen.CalcContext: + // calc op calc + if t.GetOp() != nil { + return t + } + // unary + tree = t.Unary() + case *gen.MemberExprContext: + // member expands to one of: primary, select, index, or create message + tree = t.Member() + case *gen.PrimaryExprContext: + // primary expands to one of identifier, nested, create list, create struct, literal + tree = t.Primary() + case *gen.NestedContext: + // contains a nested 'expr' + tree = t.GetE() + case *gen.ConstantLiteralContext: + // expands to a primitive literal + tree = t.Literal() + default: + return t + } + } + return tree +} + +var ( + reservedIdentifier = regexp.MustCompile("no viable alternative at input '.(true|false|null)'") + mismatchedReservedIdentifier = "mismatched input '$1' expecting IDENTIFIER" +) diff --git a/vendor/github.com/google/cel-go/parser/unescape.go b/vendor/github.com/google/cel-go/parser/unescape.go new file mode 100644 index 0000000000..43cc9b901b --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/unescape.go @@ -0,0 +1,237 @@ +// Copyright 2018 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import ( + "errors" + "strings" + "unicode/utf8" +) + +// Unescape takes a quoted string, unquotes, and unescapes it. +// +// This function performs escaping compatible with GoogleSQL. +func unescape(value string, isBytes bool) (string, error) { + // All strings normalize newlines to the \n representation. + value = newlineNormalizer.Replace(value) + n := len(value) + + // Nothing to unescape / decode. + if n < 2 { + return value, errors.New("unable to unescape string") + } + + // Raw string preceded by the 'r|R' prefix. + isRawLiteral := false + if value[0] == 'r' || value[0] == 'R' { + value = value[1:] + n = len(value) + isRawLiteral = true + } + + // Quoted string of some form, must have same first and last char. + if value[0] != value[n-1] || (value[0] != '"' && value[0] != '\'') { + return value, errors.New("unable to unescape string") + } + + // Normalize the multi-line CEL string representation to a standard + // Go quoted string. + if n >= 6 { + if strings.HasPrefix(value, "'''") { + if !strings.HasSuffix(value, "'''") { + return value, errors.New("unable to unescape string") + } + value = "\"" + value[3:n-3] + "\"" + } else if strings.HasPrefix(value, `"""`) { + if !strings.HasSuffix(value, `"""`) { + return value, errors.New("unable to unescape string") + } + value = "\"" + value[3:n-3] + "\"" + } + n = len(value) + } + value = value[1 : n-1] + // If there is nothing to escape, then return. + if isRawLiteral || !strings.ContainsRune(value, '\\') { + return value, nil + } + + // Otherwise the string contains escape characters. + // The following logic is adapted from `strconv/quote.go` + var runeTmp [utf8.UTFMax]byte + buf := make([]byte, 0, 3*n/2) + for len(value) > 0 { + c, encode, rest, err := unescapeChar(value, isBytes) + if err != nil { + return "", err + } + value = rest + if c < utf8.RuneSelf || !encode { + buf = append(buf, byte(c)) + } else { + n := utf8.EncodeRune(runeTmp[:], c) + buf = append(buf, runeTmp[:n]...) + } + } + return string(buf), nil +} + +// unescapeChar takes a string input and returns the following info: +// +// value - the escaped unicode rune at the front of the string. +// encode - the value should be unicode-encoded +// tail - the remainder of the input string. +// err - error value, if the character could not be unescaped. +// +// When encode is true the return value may still fit within a single byte, +// but unicode encoding is attempted which is more expensive than when the +// value is known to self-represent as a single byte. +// +// If isBytes is set, unescape as a bytes literal so octal and hex escapes +// represent byte values, not unicode code points. +func unescapeChar(s string, isBytes bool) (value rune, encode bool, tail string, err error) { + // 1. Character is not an escape sequence. + switch c := s[0]; { + case c >= utf8.RuneSelf: + r, size := utf8.DecodeRuneInString(s) + return r, true, s[size:], nil + case c != '\\': + return rune(s[0]), false, s[1:], nil + } + + // 2. Last character is the start of an escape sequence. + if len(s) <= 1 { + err = errors.New("unable to unescape string, found '\\' as last character") + return + } + + c := s[1] + s = s[2:] + // 3. Common escape sequences shared with Google SQL + switch c { + case 'a': + value = '\a' + case 'b': + value = '\b' + case 'f': + value = '\f' + case 'n': + value = '\n' + case 'r': + value = '\r' + case 't': + value = '\t' + case 'v': + value = '\v' + case '\\': + value = '\\' + case '\'': + value = '\'' + case '"': + value = '"' + case '`': + value = '`' + case '?': + value = '?' + + // 4. Unicode escape sequences, reproduced from `strconv/quote.go` + case 'x', 'X', 'u', 'U': + n := 0 + encode = true + switch c { + case 'x', 'X': + n = 2 + encode = !isBytes + case 'u': + n = 4 + if isBytes { + err = errors.New("unable to unescape string") + return + } + case 'U': + n = 8 + if isBytes { + err = errors.New("unable to unescape string") + return + } + } + var v rune + if len(s) < n { + err = errors.New("unable to unescape string") + return + } + for j := 0; j < n; j++ { + x, ok := unhex(s[j]) + if !ok { + err = errors.New("unable to unescape string") + return + } + v = v<<4 | x + } + s = s[n:] + if !isBytes && !utf8.ValidRune(v) { + err = errors.New("invalid unicode code point") + return + } + value = v + + // 5. Octal escape sequences, must be three digits \[0-3][0-7][0-7] + case '0', '1', '2', '3': + if len(s) < 2 { + err = errors.New("unable to unescape octal sequence in string") + return + } + v := rune(c - '0') + for j := 0; j < 2; j++ { + x := s[j] + if x < '0' || x > '7' { + err = errors.New("unable to unescape octal sequence in string") + return + } + v = v*8 + rune(x-'0') + } + if !isBytes && !utf8.ValidRune(v) { + err = errors.New("invalid unicode code point") + return + } + value = v + s = s[2:] + encode = !isBytes + + // Unknown escape sequence. + default: + err = errors.New("unable to unescape string") + } + + tail = s + return +} + +func unhex(b byte) (rune, bool) { + c := rune(b) + switch { + case '0' <= c && c <= '9': + return c - '0', true + case 'a' <= c && c <= 'f': + return c - 'a' + 10, true + case 'A' <= c && c <= 'F': + return c - 'A' + 10, true + } + return 0, false +} + +var ( + newlineNormalizer = strings.NewReplacer("\r\n", "\n", "\r", "\n") +) diff --git a/vendor/github.com/google/cel-go/parser/unparser.go b/vendor/github.com/google/cel-go/parser/unparser.go new file mode 100644 index 0000000000..ffd5b18e47 --- /dev/null +++ b/vendor/github.com/google/cel-go/parser/unparser.go @@ -0,0 +1,663 @@ +// Copyright 2019 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package parser + +import ( + "errors" + "fmt" + "regexp" + "strconv" + "strings" + + "github.com/google/cel-go/common/ast" + "github.com/google/cel-go/common/operators" + "github.com/google/cel-go/common/types" + "github.com/google/cel-go/common/types/ref" +) + +// Unparse takes an input expression and source position information and generates a human-readable +// expression. +// +// Note, unparsing an AST will often generate the same expression as was originally parsed, but some +// formatting may be lost in translation, notably: +// +// - All quoted literals are doubled quoted. +// - Byte literals are represented as octal escapes (same as Google SQL). +// - Floating point values are converted to the small number of digits needed to represent the value. +// - Spacing around punctuation marks may be lost. +// - Parentheses will only be applied when they affect operator precedence. +// +// This function optionally takes in one or more UnparserOption to alter the unparsing behavior, such as +// performing word wrapping on expressions. +func Unparse(expr ast.Expr, info *ast.SourceInfo, opts ...UnparserOption) (string, error) { + unparserOpts := &unparserOption{ + wrapOnColumn: defaultWrapOnColumn, + wrapAfterColumnLimit: defaultWrapAfterColumnLimit, + operatorsToWrapOn: defaultOperatorsToWrapOn, + } + + var err error + for _, opt := range opts { + unparserOpts, err = opt(unparserOpts) + if err != nil { + return "", err + } + } + + un := &unparser{ + info: info, + options: unparserOpts, + } + err = un.visit(expr) + if err != nil { + return "", err + } + return un.str.String(), nil +} + +var identifierPartPattern *regexp.Regexp = regexp.MustCompile(`^[A-Za-z_][0-9A-Za-z_]*$`) + +func maybeQuoteField(field string) string { + if !identifierPartPattern.MatchString(field) || field == "in" { + return "`" + field + "`" + } + return field +} + +// unparser visits an expression to reconstruct a human-readable string from an AST. +type unparser struct { + str strings.Builder + info *ast.SourceInfo + options *unparserOption + lastWrappedIndex int +} + +func (un *unparser) visit(expr ast.Expr) error { + if expr == nil { + return errors.New("unsupported expression") + } + visited, err := un.visitMaybeMacroCall(expr) + if visited || err != nil { + return err + } + switch expr.Kind() { + case ast.CallKind: + return un.visitCall(expr) + case ast.LiteralKind: + return un.visitConst(expr) + case ast.IdentKind: + return un.visitIdent(expr) + case ast.ListKind: + return un.visitList(expr) + case ast.MapKind: + return un.visitStructMap(expr) + case ast.SelectKind: + return un.visitSelect(expr) + case ast.StructKind: + return un.visitStructMsg(expr) + default: + return fmt.Errorf("unsupported expression: %v", expr) + } +} + +func (un *unparser) visitCall(expr ast.Expr) error { + c := expr.AsCall() + fun := c.FunctionName() + switch fun { + // ternary operator + case operators.Conditional: + return un.visitCallConditional(expr) + // optional select operator + case operators.OptSelect: + return un.visitOptSelect(expr) + // index operator + case operators.Index: + return un.visitCallIndex(expr) + // optional index operator + case operators.OptIndex: + return un.visitCallOptIndex(expr) + // unary operators + case operators.LogicalNot, operators.Negate: + return un.visitCallUnary(expr) + // binary operators + case operators.Add, + operators.Divide, + operators.Equals, + operators.Greater, + operators.GreaterEquals, + operators.In, + operators.Less, + operators.LessEquals, + operators.LogicalAnd, + operators.LogicalOr, + operators.Modulo, + operators.Multiply, + operators.NotEquals, + operators.OldIn, + operators.Subtract: + return un.visitCallBinary(expr) + // standard function calls. + default: + return un.visitCallFunc(expr) + } +} + +func (un *unparser) visitCallBinary(expr ast.Expr) error { + c := expr.AsCall() + fun := c.FunctionName() + args := c.Args() + lhs := args[0] + // add parens if the current operator is lower precedence than the lhs expr operator. + lhsParen := isComplexOperatorWithRespectTo(fun, lhs) + rhs := args[1] + // add parens if the current operator is lower precedence than the rhs expr operator, + // or the same precedence and the operator is left recursive. + rhsParen := isComplexOperatorWithRespectTo(fun, rhs) + if !rhsParen && isLeftRecursive(fun) { + rhsParen = isSamePrecedence(fun, rhs) + } + err := un.visitMaybeNested(lhs, lhsParen) + if err != nil { + return err + } + unmangled, found := operators.FindReverseBinaryOperator(fun) + if !found { + return fmt.Errorf("cannot unmangle operator: %s", fun) + } + + un.writeOperatorWithWrapping(fun, unmangled) + return un.visitMaybeNested(rhs, rhsParen) +} + +func (un *unparser) visitCallConditional(expr ast.Expr) error { + c := expr.AsCall() + args := c.Args() + // add parens if operand is a conditional itself. + nested := isSamePrecedence(operators.Conditional, args[0]) || + isComplexOperator(args[0]) + err := un.visitMaybeNested(args[0], nested) + if err != nil { + return err + } + un.writeOperatorWithWrapping(operators.Conditional, "?") + + // add parens if operand is a conditional itself. + nested = isSamePrecedence(operators.Conditional, args[1]) || + isComplexOperator(args[1]) + err = un.visitMaybeNested(args[1], nested) + if err != nil { + return err + } + + un.str.WriteString(" : ") + // add parens if operand is a conditional itself. + nested = isSamePrecedence(operators.Conditional, args[2]) || + isComplexOperator(args[2]) + + return un.visitMaybeNested(args[2], nested) +} + +func (un *unparser) visitCallFunc(expr ast.Expr) error { + c := expr.AsCall() + fun := c.FunctionName() + args := c.Args() + if c.IsMemberFunction() { + nested := isBinaryOrTernaryOperator(c.Target()) + err := un.visitMaybeNested(c.Target(), nested) + if err != nil { + return err + } + un.str.WriteString(".") + } + un.str.WriteString(fun) + un.str.WriteString("(") + for i, arg := range args { + err := un.visit(arg) + if err != nil { + return err + } + if i < len(args)-1 { + un.str.WriteString(", ") + } + } + un.str.WriteString(")") + return nil +} + +func (un *unparser) visitCallIndex(expr ast.Expr) error { + return un.visitCallIndexInternal(expr, "[") +} + +func (un *unparser) visitCallOptIndex(expr ast.Expr) error { + return un.visitCallIndexInternal(expr, "[?") +} + +func (un *unparser) visitCallIndexInternal(expr ast.Expr, op string) error { + c := expr.AsCall() + args := c.Args() + nested := isBinaryOrTernaryOperator(args[0]) + err := un.visitMaybeNested(args[0], nested) + if err != nil { + return err + } + un.str.WriteString(op) + err = un.visit(args[1]) + if err != nil { + return err + } + un.str.WriteString("]") + return nil +} + +func (un *unparser) visitCallUnary(expr ast.Expr) error { + c := expr.AsCall() + fun := c.FunctionName() + args := c.Args() + unmangled, found := operators.FindReverse(fun) + if !found { + return fmt.Errorf("cannot unmangle operator: %s", fun) + } + un.str.WriteString(unmangled) + nested := isComplexOperator(args[0]) + return un.visitMaybeNested(args[0], nested) +} + +func (un *unparser) visitConstVal(val ref.Val) error { + optional := false + if optVal, ok := val.(*types.Optional); ok { + if !optVal.HasValue() { + un.str.WriteString("optional.none()") + return nil + } + optional = true + un.str.WriteString("optional.of(") + val = optVal.GetValue() + } + switch val := val.(type) { + case types.Bool: + un.str.WriteString(strconv.FormatBool(bool(val))) + case types.Bytes: + // bytes constants are surrounded with b"" + un.str.WriteString(`b"`) + un.str.WriteString(bytesToOctets([]byte(val))) + un.str.WriteString(`"`) + case types.Double: + // represent the float using the minimum required digits + d := strconv.FormatFloat(float64(val), 'g', -1, 64) + un.str.WriteString(d) + if !strings.Contains(d, ".") { + un.str.WriteString(".0") + } + case types.Int: + i := strconv.FormatInt(int64(val), 10) + un.str.WriteString(i) + case types.Null: + un.str.WriteString("null") + case types.String: + // strings will be double quoted with quotes escaped. + un.str.WriteString(strconv.Quote(string(val))) + case types.Uint: + // uint literals have a 'u' suffix. + ui := strconv.FormatUint(uint64(val), 10) + un.str.WriteString(ui) + un.str.WriteString("u") + case *types.Optional: + if err := un.visitConstVal(val); err != nil { + return err + } + default: + return errors.New("unsupported constant") + } + if optional { + un.str.WriteString(")") + } + return nil +} +func (un *unparser) visitConst(expr ast.Expr) error { + val := expr.AsLiteral() + if err := un.visitConstVal(val); err != nil { + return fmt.Errorf("unsupported constant: %v", expr) + } + return nil +} + +func (un *unparser) visitIdent(expr ast.Expr) error { + un.str.WriteString(expr.AsIdent()) + return nil +} + +func (un *unparser) visitList(expr ast.Expr) error { + l := expr.AsList() + elems := l.Elements() + optIndices := make(map[int]bool, len(elems)) + for _, idx := range l.OptionalIndices() { + optIndices[int(idx)] = true + } + un.str.WriteString("[") + for i, elem := range elems { + if optIndices[i] { + un.str.WriteString("?") + } + err := un.visit(elem) + if err != nil { + return err + } + if i < len(elems)-1 { + un.str.WriteString(", ") + } + } + un.str.WriteString("]") + return nil +} + +func (un *unparser) visitOptSelect(expr ast.Expr) error { + c := expr.AsCall() + args := c.Args() + operand := args[0] + field := args[1].AsLiteral().(types.String) + return un.visitSelectInternal(operand, false, ".?", string(field)) +} + +func (un *unparser) visitSelect(expr ast.Expr) error { + sel := expr.AsSelect() + return un.visitSelectInternal(sel.Operand(), sel.IsTestOnly(), ".", sel.FieldName()) +} + +func (un *unparser) visitSelectInternal(operand ast.Expr, testOnly bool, op string, field string) error { + // handle the case when the select expression was generated by the has() macro. + if testOnly { + un.str.WriteString("has(") + } + nested := !testOnly && isBinaryOrTernaryOperator(operand) + err := un.visitMaybeNested(operand, nested) + if err != nil { + return err + } + un.str.WriteString(op) + un.str.WriteString(maybeQuoteField(field)) + if testOnly { + un.str.WriteString(")") + } + return nil +} + +func (un *unparser) visitStructMsg(expr ast.Expr) error { + m := expr.AsStruct() + fields := m.Fields() + un.str.WriteString(m.TypeName()) + un.str.WriteString("{") + for i, f := range fields { + field := f.AsStructField() + f := field.Name() + if field.IsOptional() { + un.str.WriteString("?") + } + un.str.WriteString(maybeQuoteField(f)) + un.str.WriteString(": ") + v := field.Value() + err := un.visit(v) + if err != nil { + return err + } + if i < len(fields)-1 { + un.str.WriteString(", ") + } + } + un.str.WriteString("}") + return nil +} + +func (un *unparser) visitStructMap(expr ast.Expr) error { + m := expr.AsMap() + entries := m.Entries() + un.str.WriteString("{") + for i, e := range entries { + entry := e.AsMapEntry() + k := entry.Key() + if entry.IsOptional() { + un.str.WriteString("?") + } + err := un.visit(k) + if err != nil { + return err + } + un.str.WriteString(": ") + v := entry.Value() + err = un.visit(v) + if err != nil { + return err + } + if i < len(entries)-1 { + un.str.WriteString(", ") + } + } + un.str.WriteString("}") + return nil +} + +func (un *unparser) visitMaybeMacroCall(expr ast.Expr) (bool, error) { + call, found := un.info.GetMacroCall(expr.ID()) + if !found { + return false, nil + } + return true, un.visit(call) +} + +func (un *unparser) visitMaybeNested(expr ast.Expr, nested bool) error { + if nested { + un.str.WriteString("(") + } + err := un.visit(expr) + if err != nil { + return err + } + if nested { + un.str.WriteString(")") + } + return nil +} + +// isLeftRecursive indicates whether the parser resolves the call in a left-recursive manner as +// this can have an effect of how parentheses affect the order of operations in the AST. +func isLeftRecursive(op string) bool { + return op != operators.LogicalAnd && op != operators.LogicalOr +} + +// isSamePrecedence indicates whether the precedence of the input operator is the same as the +// precedence of the (possible) operation represented in the input Expr. +// +// If the expr is not a Call, the result is false. +func isSamePrecedence(op string, expr ast.Expr) bool { + if expr.Kind() != ast.CallKind { + return false + } + c := expr.AsCall() + other := c.FunctionName() + return operators.Precedence(op) == operators.Precedence(other) +} + +// isLowerPrecedence indicates whether the precedence of the input operator is lower precedence +// than the (possible) operation represented in the input Expr. +// +// If the expr is not a Call, the result is false. +func isLowerPrecedence(op string, expr ast.Expr) bool { + c := expr.AsCall() + other := c.FunctionName() + return operators.Precedence(op) < operators.Precedence(other) +} + +// Indicates whether the expr is a complex operator, i.e., a call expression +// with 2 or more arguments. +func isComplexOperator(expr ast.Expr) bool { + if expr.Kind() == ast.CallKind && len(expr.AsCall().Args()) >= 2 { + return true + } + return false +} + +// Indicates whether it is a complex operation compared to another. +// expr is *not* considered complex if it is not a call expression or has +// less than two arguments, or if it has a higher precedence than op. +func isComplexOperatorWithRespectTo(op string, expr ast.Expr) bool { + if expr.Kind() != ast.CallKind || len(expr.AsCall().Args()) < 2 { + return false + } + return isLowerPrecedence(op, expr) +} + +// Indicate whether this is a binary or ternary operator. +func isBinaryOrTernaryOperator(expr ast.Expr) bool { + if expr.Kind() != ast.CallKind || len(expr.AsCall().Args()) < 2 { + return false + } + _, isBinaryOp := operators.FindReverseBinaryOperator(expr.AsCall().FunctionName()) + return isBinaryOp || isSamePrecedence(operators.Conditional, expr) +} + +// bytesToOctets converts byte sequences to a string using a three digit octal encoded value +// per byte. +func bytesToOctets(byteVal []byte) string { + var b strings.Builder + for _, c := range byteVal { + fmt.Fprintf(&b, "\\%03o", c) + } + return b.String() +} + +// writeOperatorWithWrapping outputs the operator and inserts a newline for operators configured +// in the unparser options. +func (un *unparser) writeOperatorWithWrapping(fun string, unmangled string) bool { + _, wrapOperatorExists := un.options.operatorsToWrapOn[fun] + lineLength := un.str.Len() - un.lastWrappedIndex + len(fun) + + if wrapOperatorExists && lineLength >= un.options.wrapOnColumn { + un.lastWrappedIndex = un.str.Len() + // wrapAfterColumnLimit flag dictates whether the newline is placed + // before or after the operator + if un.options.wrapAfterColumnLimit { + // Input: a && b + // Output: a &&\nb + un.str.WriteString(" ") + un.str.WriteString(unmangled) + un.str.WriteString("\n") + } else { + // Input: a && b + // Output: a\n&& b + un.str.WriteString("\n") + un.str.WriteString(unmangled) + un.str.WriteString(" ") + } + return true + } + un.str.WriteString(" ") + un.str.WriteString(unmangled) + un.str.WriteString(" ") + return false +} + +// Defined defaults for the unparser options +var ( + defaultWrapOnColumn = 80 + defaultWrapAfterColumnLimit = true + defaultOperatorsToWrapOn = map[string]bool{ + operators.LogicalAnd: true, + operators.LogicalOr: true, + } +) + +// UnparserOption is a functional option for configuring the output formatting +// of the Unparse function. +type UnparserOption func(*unparserOption) (*unparserOption, error) + +// Internal representation of the UnparserOption type +type unparserOption struct { + wrapOnColumn int + operatorsToWrapOn map[string]bool + wrapAfterColumnLimit bool +} + +// WrapOnColumn wraps the output expression when its string length exceeds a specified limit +// for operators set by WrapOnOperators function or by default, "&&" and "||" will be wrapped. +// +// Example usage: +// +// Unparse(expr, sourceInfo, WrapOnColumn(40), WrapOnOperators(Operators.LogicalAnd)) +// +// This will insert a newline immediately after the logical AND operator for the below example input: +// +// Input: +// 'my-principal-group' in request.auth.claims && request.auth.claims.iat > now - duration('5m') +// +// Output: +// 'my-principal-group' in request.auth.claims && +// request.auth.claims.iat > now - duration('5m') +func WrapOnColumn(col int) UnparserOption { + return func(opt *unparserOption) (*unparserOption, error) { + if col < 1 { + return nil, fmt.Errorf("Invalid unparser option. Wrap column value must be greater than or equal to 1. Got %v instead", col) + } + opt.wrapOnColumn = col + return opt, nil + } +} + +// WrapOnOperators specifies which operators to perform word wrapping on an output expression when its string length +// exceeds the column limit set by WrapOnColumn function. +// +// Word wrapping is supported on non-unary symbolic operators. Refer to operators.go for the full list +// +// This will replace any previously supplied operators instead of merging them. +func WrapOnOperators(symbols ...string) UnparserOption { + return func(opt *unparserOption) (*unparserOption, error) { + opt.operatorsToWrapOn = make(map[string]bool) + for _, symbol := range symbols { + _, found := operators.FindReverse(symbol) + if !found { + return nil, fmt.Errorf("Invalid unparser option. Unsupported operator: %s", symbol) + } + arity := operators.Arity(symbol) + if arity < 2 { + return nil, fmt.Errorf("Invalid unparser option. Unary operators are unsupported: %s", symbol) + } + + opt.operatorsToWrapOn[symbol] = true + } + + return opt, nil + } +} + +// WrapAfterColumnLimit dictates whether to insert a newline before or after the specified operator +// when word wrapping is performed. +// +// Example usage: +// +// Unparse(expr, sourceInfo, WrapOnColumn(40), WrapOnOperators(Operators.LogicalAnd), WrapAfterColumnLimit(false)) +// +// This will insert a newline immediately before the logical AND operator for the below example input, ensuring +// that the length of a line never exceeds the specified column limit: +// +// Input: +// 'my-principal-group' in request.auth.claims && request.auth.claims.iat > now - duration('5m') +// +// Output: +// 'my-principal-group' in request.auth.claims +// && request.auth.claims.iat > now - duration('5m') +func WrapAfterColumnLimit(wrapAfter bool) UnparserOption { + return func(opt *unparserOption) (*unparserOption, error) { + opt.wrapAfterColumnLimit = wrapAfter + return opt, nil + } +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/LICENSE b/vendor/github.com/openshift-eng/openshift-tests-extension/LICENSE new file mode 100644 index 0000000000..261eeb9e9f --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmd.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmd.go new file mode 100644 index 0000000000..2db8cfa6ea --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmd.go @@ -0,0 +1,23 @@ +package cmd + +import ( + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdimages" + "github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdinfo" + "github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdlist" + "github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun" + "github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdupdate" + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" +) + +func DefaultExtensionCommands(registry *extension.Registry) []*cobra.Command { + return []*cobra.Command{ + cmdrun.NewRunSuiteCommand(registry), + cmdrun.NewRunTestCommand(registry), + cmdlist.NewListCommand(registry), + cmdinfo.NewInfoCommand(registry), + cmdupdate.NewUpdateCommand(registry), + cmdimages.NewImagesCommand(registry), + } +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdimages/cmdimages.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdimages/cmdimages.go new file mode 100644 index 0000000000..33b458fac2 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdimages/cmdimages.go @@ -0,0 +1,36 @@ +package cmdimages + +import ( + "encoding/json" + "fmt" + "os" + + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +func NewImagesCommand(registry *extension.Registry) *cobra.Command { + componentFlags := flags.NewComponentFlags() + + cmd := &cobra.Command{ + Use: "images", + Short: "List test images", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + extension := registry.Get(componentFlags.Component) + if extension == nil { + return fmt.Errorf("couldn't find the component %q", componentFlags.Component) + } + images, err := json.Marshal(extension.Images) + if err != nil { + return err + } + fmt.Fprintf(os.Stdout, "%s\n", images) + return nil + }, + } + componentFlags.BindFlags(cmd.Flags()) + return cmd +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdinfo/info.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdinfo/info.go new file mode 100644 index 0000000000..1d4237876d --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdinfo/info.go @@ -0,0 +1,38 @@ +package cmdinfo + +import ( + "encoding/json" + "fmt" + "os" + + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +func NewInfoCommand(registry *extension.Registry) *cobra.Command { + componentFlags := flags.NewComponentFlags() + + cmd := &cobra.Command{ + Use: "info", + Short: "Display extension metadata", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + extension := registry.Get(componentFlags.Component) + if extension == nil { + return fmt.Errorf("couldn't find the component %q", componentFlags.Component) + } + + info, err := json.MarshalIndent(extension, "", " ") + if err != nil { + return err + } + + fmt.Fprintf(os.Stdout, "%s\n", string(info)) + return nil + }, + } + componentFlags.BindFlags(cmd.Flags()) + return cmd +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdlist/list.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdlist/list.go new file mode 100644 index 0000000000..31a040b7c9 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdlist/list.go @@ -0,0 +1,133 @@ +package cmdlist + +import ( + "fmt" + "os" + + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +func NewListCommand(registry *extension.Registry) *cobra.Command { + opts := struct { + componentFlags *flags.ComponentFlags + suiteFlags *flags.SuiteFlags + outputFlags *flags.OutputFlags + environmentalFlags *flags.EnvironmentalFlags + }{ + suiteFlags: flags.NewSuiteFlags(), + componentFlags: flags.NewComponentFlags(), + outputFlags: flags.NewOutputFlags(), + environmentalFlags: flags.NewEnvironmentalFlags(), + } + + // Tests + listTestsCmd := &cobra.Command{ + Use: "tests", + Short: "List available tests", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + ext := registry.Get(opts.componentFlags.Component) + if ext == nil { + return fmt.Errorf("component not found: %s", opts.componentFlags.Component) + } + + // Find suite, if specified + var foundSuite *extension.Suite + var err error + if opts.suiteFlags.Suite != "" { + foundSuite, err = ext.GetSuite(opts.suiteFlags.Suite) + if err != nil { + return err + } + } + + // Filter for suite + specs := ext.GetSpecs() + if foundSuite != nil { + specs, err = specs.Filter(foundSuite.Qualifiers) + if err != nil { + return err + } + } + + specs, err = specs.FilterByEnvironment(*opts.environmentalFlags) + if err != nil { + return err + } + + data, err := opts.outputFlags.Marshal(specs) + if err != nil { + return err + } + fmt.Fprintf(os.Stdout, "%s\n", string(data)) + return nil + }, + } + opts.suiteFlags.BindFlags(listTestsCmd.Flags()) + opts.componentFlags.BindFlags(listTestsCmd.Flags()) + opts.environmentalFlags.BindFlags(listTestsCmd.Flags()) + opts.outputFlags.BindFlags(listTestsCmd.Flags()) + + // Suites + listSuitesCommand := &cobra.Command{ + Use: "suites", + Short: "List available suites", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + ext := registry.Get(opts.componentFlags.Component) + if ext == nil { + return fmt.Errorf("component not found: %s", opts.componentFlags.Component) + } + + suites := ext.Suites + + data, err := opts.outputFlags.Marshal(suites) + if err != nil { + return err + } + fmt.Fprintf(os.Stdout, "%s\n", string(data)) + return nil + }, + } + opts.componentFlags.BindFlags(listSuitesCommand.Flags()) + opts.outputFlags.BindFlags(listSuitesCommand.Flags()) + + // Components + listComponentsCmd := &cobra.Command{ + Use: "components", + Short: "List available components", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + var components []*extension.Component + registry.Walk(func(e *extension.Extension) { + components = append(components, &e.Component) + }) + + data, err := opts.outputFlags.Marshal(components) + if err != nil { + return err + } + fmt.Fprintf(os.Stdout, "%s\n", string(data)) + return nil + }, + } + opts.outputFlags.BindFlags(listComponentsCmd.Flags()) + + var listCmd = &cobra.Command{ + Use: "list [subcommand]", + Short: "List items", + RunE: func(cmd *cobra.Command, args []string) error { + return listTestsCmd.RunE(cmd, args) + }, + } + opts.suiteFlags.BindFlags(listCmd.Flags()) + opts.componentFlags.BindFlags(listCmd.Flags()) + opts.outputFlags.BindFlags(listCmd.Flags()) + opts.environmentalFlags.BindFlags(listCmd.Flags()) + listCmd.AddCommand(listTestsCmd, listComponentsCmd, listSuitesCommand) + + return listCmd +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun/runsuite.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun/runsuite.go new file mode 100644 index 0000000000..d431719a5a --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun/runsuite.go @@ -0,0 +1,138 @@ +package cmdrun + +import ( + "context" + "encoding/json" + "fmt" + "os" + "os/signal" + "path/filepath" + "syscall" + "time" + + "github.com/pkg/errors" + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +func NewRunSuiteCommand(registry *extension.Registry) *cobra.Command { + opts := struct { + componentFlags *flags.ComponentFlags + outputFlags *flags.OutputFlags + concurrencyFlags *flags.ConcurrencyFlags + junitPath string + }{ + componentFlags: flags.NewComponentFlags(), + outputFlags: flags.NewOutputFlags(), + concurrencyFlags: flags.NewConcurrencyFlags(), + junitPath: "", + } + + cmd := &cobra.Command{ + Use: "run-suite NAME", + Short: "Run a group of tests by suite. This is more limited than origin, and intended for light local " + + "development use. Orchestration parameters, scheduling, isolation, etc are not obeyed, and Ginkgo tests are executed serially.", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + ctx, cancelCause := context.WithCancelCause(context.Background()) + defer cancelCause(errors.New("exiting")) + + abortCh := make(chan os.Signal, 2) + go func() { + <-abortCh + fmt.Fprintf(os.Stderr, "Interrupted, terminating tests") + cancelCause(errors.New("interrupt received")) + + select { + case sig := <-abortCh: + fmt.Fprintf(os.Stderr, "Interrupted twice, exiting (%s)", sig) + switch sig { + case syscall.SIGINT: + os.Exit(130) + default: + os.Exit(130) // if we were interrupted, never return zero. + } + + case <-time.After(30 * time.Minute): // allow time for cleanup. If we finish before this, we'll exit + fmt.Fprintf(os.Stderr, "Timed out during cleanup, exiting") + os.Exit(130) // if we were interrupted, never return zero. + } + }() + signal.Notify(abortCh, syscall.SIGINT, syscall.SIGTERM) + + ext := registry.Get(opts.componentFlags.Component) + if ext == nil { + return fmt.Errorf("component not found: %s", opts.componentFlags.Component) + } + if len(args) != 1 { + return fmt.Errorf("must specify one suite name") + } + suite, err := ext.GetSuite(args[0]) + if err != nil { + return errors.Wrapf(err, "couldn't find suite: %s", args[0]) + } + + compositeWriter := extensiontests.NewCompositeResultWriter() + defer func() { + if err = compositeWriter.Flush(); err != nil { + fmt.Fprintf(os.Stderr, "failed to write results: %v\n", err) + } + }() + + // JUnit writer if needed + if opts.junitPath != "" { + junitWriter, err := extensiontests.NewJUnitResultWriter(opts.junitPath, suite.Name) + if err != nil { + return errors.Wrap(err, "couldn't create junit writer") + } + compositeWriter.AddWriter(junitWriter) + } + + // JSON writer + jsonWriter, err := extensiontests.NewJSONResultWriter(os.Stdout, + extensiontests.ResultFormat(opts.outputFlags.Output)) + if err != nil { + return err + } + compositeWriter.AddWriter(jsonWriter) + + specs, err := ext.GetSpecs().Filter(suite.Qualifiers) + if err != nil { + return errors.Wrap(err, "couldn't filter specs") + } + + results, runErr := specs.Run(ctx, compositeWriter, opts.concurrencyFlags.MaxConcurency) + if opts.junitPath != "" { + // we want to commit the results to disk regardless of the success or failure of the specs + if err := writeResults(opts.junitPath, results); err != nil { + fmt.Fprintf(os.Stderr, "Failed to write test results to disk: %v\n", err) + } + } + return runErr + }, + } + opts.componentFlags.BindFlags(cmd.Flags()) + opts.outputFlags.BindFlags(cmd.Flags()) + opts.concurrencyFlags.BindFlags(cmd.Flags()) + cmd.Flags().StringVarP(&opts.junitPath, "junit-path", "j", opts.junitPath, "write results to junit XML") + + return cmd +} + +func writeResults(jUnitPath string, results []*extensiontests.ExtensionTestResult) error { + jUnitDir := filepath.Dir(jUnitPath) + if err := os.MkdirAll(jUnitDir, 0755); err != nil { + return fmt.Errorf("failed to create output directory: %v", err) + } + + encodedResults, err := json.MarshalIndent(results, "", " ") + if err != nil { + return fmt.Errorf("failed to marshal results: %v", err) + } + + outputPath := filepath.Join(jUnitDir, fmt.Sprintf("extension_test_result_e2e_%s.json", time.Now().UTC().Format("20060102-150405"))) + return os.WriteFile(outputPath, encodedResults, 0644) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun/runtest.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun/runtest.go new file mode 100644 index 0000000000..c62021e7ec --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun/runtest.go @@ -0,0 +1,113 @@ +package cmdrun + +import ( + "bufio" + "context" + "errors" + "fmt" + "os" + "os/signal" + "syscall" + "time" + + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +func NewRunTestCommand(registry *extension.Registry) *cobra.Command { + opts := struct { + componentFlags *flags.ComponentFlags + concurrencyFlags *flags.ConcurrencyFlags + nameFlags *flags.NamesFlags + outputFlags *flags.OutputFlags + }{ + componentFlags: flags.NewComponentFlags(), + nameFlags: flags.NewNamesFlags(), + outputFlags: flags.NewOutputFlags(), + concurrencyFlags: flags.NewConcurrencyFlags(), + } + + cmd := &cobra.Command{ + Use: "run-test [-n NAME...] [NAME]", + Short: "Runs tests by name", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + ctx, cancelCause := context.WithCancelCause(context.Background()) + defer cancelCause(errors.New("exiting")) + + abortCh := make(chan os.Signal, 2) + go func() { + <-abortCh + fmt.Fprintf(os.Stderr, "Interrupted, terminating tests") + cancelCause(errors.New("interrupt received")) + + select { + case sig := <-abortCh: + fmt.Fprintf(os.Stderr, "Interrupted twice, exiting (%s)", sig) + switch sig { + case syscall.SIGINT: + os.Exit(130) + default: + os.Exit(130) // if we were interrupted, never return zero. + } + + case <-time.After(30 * time.Minute): // allow time for cleanup. If we finish before this, we'll exit + fmt.Fprintf(os.Stderr, "Timed out during cleanup, exiting") + os.Exit(130) // if we were interrupted, never return zero. + } + }() + signal.Notify(abortCh, syscall.SIGINT, syscall.SIGTERM) + + ext := registry.Get(opts.componentFlags.Component) + if ext == nil { + return fmt.Errorf("component not found: %s", opts.componentFlags.Component) + } + if len(args) > 1 { + return fmt.Errorf("use --names to specify more than one test") + } + opts.nameFlags.Names = append(opts.nameFlags.Names, args...) + + // allow reading tests from an stdin pipe + info, err := os.Stdin.Stat() + if err != nil { + return err + } + if info.Mode()&os.ModeCharDevice == 0 { // Check if input is from a pipe + scanner := bufio.NewScanner(os.Stdin) + for scanner.Scan() { + opts.nameFlags.Names = append(opts.nameFlags.Names, scanner.Text()) + } + if err := scanner.Err(); err != nil { + return fmt.Errorf("error reading from stdin: %v", err) + } + } + + if len(opts.nameFlags.Names) == 0 { + return fmt.Errorf("must specify at least one test") + } + + specs, err := ext.FindSpecsByName(opts.nameFlags.Names...) + if err != nil { + return err + } + + w, err := extensiontests.NewJSONResultWriter(os.Stdout, extensiontests.ResultFormat(opts.outputFlags.Output)) + if err != nil { + return err + } + defer w.Flush() + + _, err = specs.Run(ctx, w, opts.concurrencyFlags.MaxConcurency) + return err + }, + } + opts.componentFlags.BindFlags(cmd.Flags()) + opts.nameFlags.BindFlags(cmd.Flags()) + opts.outputFlags.BindFlags(cmd.Flags()) + opts.concurrencyFlags.BindFlags(cmd.Flags()) + + return cmd +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdupdate/update.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdupdate/update.go new file mode 100644 index 0000000000..5d847308e5 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdupdate/update.go @@ -0,0 +1,84 @@ +package cmdupdate + +import ( + "encoding/json" + "fmt" + "os" + "path/filepath" + "strings" + + "github.com/spf13/cobra" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension" + "github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +const metadataDirectory = ".openshift-tests-extension" + +// NewUpdateCommand adds an "update" command used to generate and verify the metadata we keep track of. This should +// be a black box to end users, i.e. we can add more criteria later they'll consume when revendoring. For now, +// we prevent a test to be renamed without updating other names, or a test to be deleted. +func NewUpdateCommand(registry *extension.Registry) *cobra.Command { + componentFlags := flags.NewComponentFlags() + + cmd := &cobra.Command{ + Use: "update", + Short: "Update test metadata", + SilenceUsage: true, + RunE: func(cmd *cobra.Command, args []string) error { + ext := registry.Get(componentFlags.Component) + if ext == nil { + return fmt.Errorf("couldn't find the component %q", componentFlags.Component) + } + + // Create the metadata directory if it doesn't exist + if err := os.MkdirAll(metadataDirectory, 0755); err != nil { + return fmt.Errorf("failed to create directory %s: %w", metadataDirectory, err) + } + + // Read existing specs + metadataPath := filepath.Join(metadataDirectory, fmt.Sprintf("%s.json", strings.ReplaceAll(ext.Component.Identifier(), ":", "_"))) + var oldSpecs extensiontests.ExtensionTestSpecs + source, err := os.Open(metadataPath) + if err != nil { + if !os.IsNotExist(err) { + return fmt.Errorf("failed to open file: %s: %+w", metadataPath, err) + } + } else { + if err := json.NewDecoder(source).Decode(&oldSpecs); err != nil { + return fmt.Errorf("failed to decode file: %s: %+w", metadataPath, err) + } + + missing, err := ext.FindRemovedTestsWithoutRename(oldSpecs) + if err != nil && len(missing) > 0 { + fmt.Fprintf(os.Stderr, "Missing Tests:\n") + for _, name := range missing { + fmt.Fprintf(os.Stdout, " * %s\n", name) + } + fmt.Fprintf(os.Stderr, "\n") + + return fmt.Errorf("missing tests, if you've renamed tests you must add their names to OriginalName, " + + "or mark them obsolete") + } + } + + // no missing tests, write the results + newSpecs := ext.GetSpecs() + data, err := json.MarshalIndent(newSpecs, "", " ") + if err != nil { + return fmt.Errorf("failed to marshal specs to JSON: %w", err) + } + + // Write the JSON data to the file + if err := os.WriteFile(metadataPath, data, 0644); err != nil { + return fmt.Errorf("failed to write file %s: %w", metadataPath, err) + } + + fmt.Printf("successfully updated metadata\n") + return nil + }, + } + componentFlags.BindFlags(cmd.Flags()) + return cmd +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/dbtime/time.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/dbtime/time.go new file mode 100644 index 0000000000..b7651ba022 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/dbtime/time.go @@ -0,0 +1,26 @@ +package dbtime + +import "time" + +// DBTime is a type suitable for direct importing into databases like BigQuery, +// formatted like 2006-01-02 15:04:05.000000 UTC. +type DBTime time.Time + +func Ptr(t time.Time) *DBTime { + return (*DBTime)(&t) +} + +func (dbt *DBTime) MarshalJSON() ([]byte, error) { + formattedTime := time.Time(*dbt).Format(`"2006-01-02 15:04:05.000000 UTC"`) + return []byte(formattedTime), nil +} + +func (dbt *DBTime) UnmarshalJSON(b []byte) error { + timeStr := string(b[1 : len(b)-1]) + parsedTime, err := time.Parse("2006-01-02 15:04:05.000000 UTC", timeStr) + if err != nil { + return err + } + *dbt = (DBTime)(parsedTime) + return nil +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extension.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extension.go new file mode 100644 index 0000000000..b9fbfb2ece --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extension.go @@ -0,0 +1,165 @@ +package extension + +import ( + "fmt" + "strings" + + et "github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests" + "github.com/openshift-eng/openshift-tests-extension/pkg/util/sets" + "github.com/openshift-eng/openshift-tests-extension/pkg/version" +) + +func NewExtension(product, kind, name string) *Extension { + return &Extension{ + APIVersion: CurrentExtensionAPIVersion, + Source: Source{ + Commit: version.CommitFromGit, + BuildDate: version.BuildDate, + GitTreeState: version.GitTreeState, + }, + Component: Component{ + Product: product, + Kind: kind, + Name: name, + }, + } +} + +func (e *Extension) GetSuite(name string) (*Suite, error) { + var suite *Suite + + for _, s := range e.Suites { + if s.Name == name { + suite = &s + break + } + } + + if suite == nil { + return nil, fmt.Errorf("no such suite: %s", name) + } + + return suite, nil +} + +func (e *Extension) GetSpecs() et.ExtensionTestSpecs { + return e.specs +} + +func (e *Extension) AddSpecs(specs et.ExtensionTestSpecs) { + specs.Walk(func(spec *et.ExtensionTestSpec) { + spec.Source = e.Component.Identifier() + }) + + e.specs = append(e.specs, specs...) +} + +// IgnoreObsoleteTests allows removal of a test. +func (e *Extension) IgnoreObsoleteTests(testNames ...string) { + if e.obsoleteTests == nil { + e.obsoleteTests = sets.New[string](testNames...) + } else { + e.obsoleteTests.Insert(testNames...) + } +} + +// FindRemovedTestsWithoutRename compares the current set of test specs against oldSpecs, including consideration of the original name, +// we return an error. Can be used to detect test renames or removals. +func (e *Extension) FindRemovedTestsWithoutRename(oldSpecs et.ExtensionTestSpecs) ([]string, error) { + currentSpecs := e.GetSpecs() + currentMap := make(map[string]bool) + + // Populate current specs into a map for quick lookup by both Name and OriginalName. + for _, spec := range currentSpecs { + currentMap[spec.Name] = true + if spec.OriginalName != "" { + currentMap[spec.OriginalName] = true + } + } + + var removedTests []string + + // Check oldSpecs against current specs. + for _, oldSpec := range oldSpecs { + // Skip if the test is marked as obsolete. + if e.obsoleteTests.Has(oldSpec.Name) { + continue + } + + // Check if oldSpec is missing in currentSpecs by both Name and OriginalName. + if !currentMap[oldSpec.Name] && (oldSpec.OriginalName == "" || !currentMap[oldSpec.OriginalName]) { + removedTests = append(removedTests, oldSpec.Name) + } + } + + // Return error if any removed tests were found. + if len(removedTests) > 0 { + return removedTests, fmt.Errorf("tests removed without rename: %v", removedTests) + } + + return nil, nil +} + +// AddGlobalSuite adds a suite whose qualifiers will apply to all tests, +// not just this one. Allowing a developer to create a composed suite of +// tests from many sources. +func (e *Extension) AddGlobalSuite(suite Suite) *Extension { + if e.Suites == nil { + e.Suites = []Suite{suite} + } else { + e.Suites = append(e.Suites, suite) + } + + return e +} + +// AddSuite adds a suite whose qualifiers will only apply to tests present +// in its own extension. +func (e *Extension) AddSuite(suite Suite) *Extension { + expr := fmt.Sprintf("source == %q", e.Component.Identifier()) + if len(suite.Qualifiers) == 0 { + suite.Qualifiers = []string{expr} + } else { + for i := range suite.Qualifiers { + suite.Qualifiers[i] = fmt.Sprintf("(%s) && (%s)", + expr, suite.Qualifiers[i]) + } + } + + e.AddGlobalSuite(suite) + return e +} + +func (e *Extension) RegisterImage(image Image) *Extension { + e.Images = append(e.Images, image) + return e +} + +func (e *Extension) FindSpecsByName(names ...string) (et.ExtensionTestSpecs, error) { + var specs et.ExtensionTestSpecs + var notFound []string + + for _, name := range names { + found := false + for i := range e.specs { + if e.specs[i].Name == name { + specs = append(specs, e.specs[i]) + found = true + break + } + } + if !found { + notFound = append(notFound, name) + } + } + + if len(notFound) > 0 { + return nil, fmt.Errorf("no such tests: %s", strings.Join(notFound, ", ")) + } + + return specs, nil +} + +func (e *Component) Identifier() string { + return fmt.Sprintf("%s:%s:%s", e.Product, e.Kind, e.Name) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/environment.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/environment.go new file mode 100644 index 0000000000..b5116a5359 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/environment.go @@ -0,0 +1,92 @@ +package extensiontests + +import ( + "fmt" + "strings" +) + +func PlatformEquals(platform string) string { + return fmt.Sprintf(`platform=="%s"`, platform) +} + +func NetworkEquals(network string) string { + return fmt.Sprintf(`network=="%s"`, network) +} + +func NetworkStackEquals(networkStack string) string { + return fmt.Sprintf(`networkStack=="%s"`, networkStack) +} + +func UpgradeEquals(upgrade string) string { + return fmt.Sprintf(`upgrade=="%s"`, upgrade) +} + +func TopologyEquals(topology string) string { + return fmt.Sprintf(`topology=="%s"`, topology) +} + +func ArchitectureEquals(arch string) string { + return fmt.Sprintf(`architecture=="%s"`, arch) +} + +func APIGroupEnabled(apiGroup string) string { + return fmt.Sprintf(`apiGroups.exists(api, api=="%s")`, apiGroup) +} + +func APIGroupDisabled(apiGroup string) string { + return fmt.Sprintf(`!apiGroups.exists(api, api=="%s")`, apiGroup) +} + +func FeatureGateEnabled(featureGate string) string { + return fmt.Sprintf(`featureGates.exists(fg, fg=="%s")`, featureGate) +} + +func FeatureGateDisabled(featureGate string) string { + return fmt.Sprintf(`!featureGates.exists(fg, fg=="%s")`, featureGate) +} + +func ExternalConnectivityEquals(externalConnectivity string) string { + return fmt.Sprintf(`externalConnectivity=="%s"`, externalConnectivity) +} + +func OptionalCapabilitiesIncludeAny(optionalCapability ...string) string { + for i := range optionalCapability { + optionalCapability[i] = OptionalCapabilityExists(optionalCapability[i]) + } + return fmt.Sprintf("(%s)", fmt.Sprint(strings.Join(optionalCapability, " || "))) +} + +func OptionalCapabilitiesIncludeAll(optionalCapability ...string) string { + for i := range optionalCapability { + optionalCapability[i] = OptionalCapabilityExists(optionalCapability[i]) + } + return fmt.Sprintf("(%s)", fmt.Sprint(strings.Join(optionalCapability, " && "))) +} + +func OptionalCapabilityExists(optionalCapability string) string { + return fmt.Sprintf(`optionalCapabilities.exists(oc, oc=="%s")`, optionalCapability) +} + +func NoOptionalCapabilitiesExist() string { + return "size(optionalCapabilities) == 0" +} + +func InstallerEquals(installer string) string { + return fmt.Sprintf(`installer=="%s"`, installer) +} + +func VersionEquals(version string) string { + return fmt.Sprintf(`version=="%s"`, version) +} + +func FactEquals(key, value string) string { + return fmt.Sprintf(`(fact_keys.exists(k, k=="%s") && facts["%s"].matches("%s"))`, key, key, value) +} + +func Or(cel ...string) string { + return fmt.Sprintf("(%s)", strings.Join(cel, " || ")) +} + +func And(cel ...string) string { + return fmt.Sprintf("(%s)", strings.Join(cel, " && ")) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/result.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/result.go new file mode 100644 index 0000000000..2e36969fe6 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/result.go @@ -0,0 +1,69 @@ +package extensiontests + +import ( + "fmt" + "strings" + + "github.com/openshift-eng/openshift-tests-extension/pkg/junit" +) + +func (results ExtensionTestResults) Walk(walkFn func(*ExtensionTestResult)) { + for i := range results { + walkFn(results[i]) + } +} + +// AddDetails adds additional information to an ExtensionTestResult. Value must marshal to JSON. +func (result *ExtensionTestResult) AddDetails(name string, value interface{}) { + result.Details = append(result.Details, Details{Name: name, Value: value}) +} + +func (result ExtensionTestResult) ToJUnit() *junit.TestCase { + tc := &junit.TestCase{ + Name: result.Name, + Duration: float64(result.Duration) / 1000.0, + } + switch result.Result { + case ResultFailed: + tc.FailureOutput = &junit.FailureOutput{ + Message: result.Error, + Output: result.Error, + } + case ResultSkipped: + messages := []string{} + for _, detail := range result.Details { + messages = append(messages, fmt.Sprintf("%s: %s", detail.Name, detail.Value)) + } + tc.SkipMessage = &junit.SkipMessage{ + Message: strings.Join(messages, "\n"), + } + case ResultPassed: + tc.SystemOut = result.Output + } + + return tc +} + +func (results ExtensionTestResults) ToJUnit(suiteName string) junit.TestSuite { + suite := junit.TestSuite{ + Name: suiteName, + } + + results.Walk(func(result *ExtensionTestResult) { + suite.NumTests++ + switch result.Result { + case ResultFailed: + suite.NumFailed++ + case ResultSkipped: + suite.NumSkipped++ + case ResultPassed: + // do nothing + default: + panic(fmt.Sprintf("unknown result type: %s", result.Result)) + } + + suite.TestCases = append(suite.TestCases, result.ToJUnit()) + }) + + return suite +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/result_writer.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/result_writer.go new file mode 100644 index 0000000000..aedc409c17 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/result_writer.go @@ -0,0 +1,164 @@ +package extensiontests + +import ( + "encoding/json" + "encoding/xml" + "errors" + "fmt" + "io" + "os" + "sync" + + "github.com/openshift-eng/openshift-tests-extension/pkg/junit" +) + +type ResultWriter interface { + Write(result *ExtensionTestResult) + Flush() error +} + +type NullResultWriter struct{} + +func (NullResultWriter) Write(*ExtensionTestResult) {} +func (NullResultWriter) Flush() error { return nil } + +type CompositeResultWriter struct { + writers []ResultWriter +} + +func NewCompositeResultWriter(writers ...ResultWriter) *CompositeResultWriter { + return &CompositeResultWriter{ + writers: writers, + } +} + +func (w *CompositeResultWriter) AddWriter(writer ResultWriter) { + w.writers = append(w.writers, writer) +} + +func (w *CompositeResultWriter) Write(res *ExtensionTestResult) { + for _, writer := range w.writers { + writer.Write(res) + } +} + +func (w *CompositeResultWriter) Flush() error { + var errs []error + for _, writer := range w.writers { + if err := writer.Flush(); err != nil { + errs = append(errs, err) + } + } + + return errors.Join(errs...) +} + +type JUnitResultWriter struct { + lock sync.Mutex + testSuite *junit.TestSuite + out *os.File + suiteName string + path string + results ExtensionTestResults +} + +func NewJUnitResultWriter(path, suiteName string) (ResultWriter, error) { + file, err := os.Create(path) + if err != nil { + return nil, err + } + + return &JUnitResultWriter{ + testSuite: &junit.TestSuite{ + Name: suiteName, + }, + out: file, + suiteName: suiteName, + path: path, + }, nil +} + +func (w *JUnitResultWriter) Write(res *ExtensionTestResult) { + w.lock.Lock() + defer w.lock.Unlock() + w.results = append(w.results, res) +} + +func (w *JUnitResultWriter) Flush() error { + w.lock.Lock() + defer w.lock.Unlock() + data, err := xml.MarshalIndent(w.results.ToJUnit(w.suiteName), "", " ") + if err != nil { + return fmt.Errorf("failed to marshal JUnit XML: %w", err) + } + if _, err := w.out.Write(data); err != nil { + return err + } + if err := w.out.Close(); err != nil { + return err + } + + return nil +} + +type ResultFormat string + +var ( + JSON ResultFormat = "json" + JSONL ResultFormat = "jsonl" +) + +type JSONResultWriter struct { + lock sync.Mutex + out io.Writer + format ResultFormat + results ExtensionTestResults +} + +func NewJSONResultWriter(out io.Writer, format ResultFormat) (*JSONResultWriter, error) { + switch format { + case JSON, JSONL: + // do nothing + default: + return nil, fmt.Errorf("unsupported result format: %s", format) + } + + return &JSONResultWriter{ + out: out, + format: format, + }, nil +} + +func (w *JSONResultWriter) Write(result *ExtensionTestResult) { + w.lock.Lock() + defer w.lock.Unlock() + switch w.format { + case JSONL: + // JSONL gets written to out as we get the items + data, err := json.Marshal(result) + if err != nil { + panic(err) + } + fmt.Fprintf(w.out, "%s\n", string(data)) + case JSON: + w.results = append(w.results, result) + } +} + +func (w *JSONResultWriter) Flush() error { + w.lock.Lock() + defer w.lock.Unlock() + switch w.format { + case JSONL: + // we already wrote it out + case JSON: + data, err := json.MarshalIndent(w.results, "", " ") + if err != nil { + return err + } + _, err = w.out.Write(data) + return err + } + + return nil +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/spec.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/spec.go new file mode 100644 index 0000000000..e87809c8a2 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/spec.go @@ -0,0 +1,621 @@ +package extensiontests + +import ( + "context" + "fmt" + "os" + "strings" + "sync" + "sync/atomic" + "time" + + "github.com/google/cel-go/cel" + "github.com/google/cel-go/checker/decls" + "github.com/google/cel-go/common/types" + + "github.com/openshift-eng/openshift-tests-extension/pkg/dbtime" + "github.com/openshift-eng/openshift-tests-extension/pkg/flags" +) + +// Walk iterates over all test specs, and executions the function provided. The test spec can be mutated. +func (specs ExtensionTestSpecs) Walk(walkFn func(*ExtensionTestSpec)) ExtensionTestSpecs { + for i := range specs { + walkFn(specs[i]) + } + + return specs +} + +type SelectFunction func(spec *ExtensionTestSpec) bool + +// Select filters the ExtensionTestSpecs to only those that match the provided SelectFunction +func (specs ExtensionTestSpecs) Select(selectFn SelectFunction) ExtensionTestSpecs { + filtered := ExtensionTestSpecs{} + for _, spec := range specs { + if selectFn(spec) { + filtered = append(filtered, spec) + } + } + + return filtered +} + +// MustSelect filters the ExtensionTestSpecs to only those that match the provided SelectFunction. +// if no specs are selected, it will throw an error +func (specs ExtensionTestSpecs) MustSelect(selectFn SelectFunction) (ExtensionTestSpecs, error) { + filtered := specs.Select(selectFn) + if len(filtered) == 0 { + return filtered, fmt.Errorf("no specs selected with specified SelectFunctions") + } + + return filtered, nil +} + +// SelectAny filters the ExtensionTestSpecs to only those that match any of the provided SelectFunctions +func (specs ExtensionTestSpecs) SelectAny(selectFns []SelectFunction) ExtensionTestSpecs { + filtered := ExtensionTestSpecs{} + for _, spec := range specs { + for _, selectFn := range selectFns { + if selectFn(spec) { + filtered = append(filtered, spec) + break + } + } + } + + return filtered +} + +// MustSelectAny filters the ExtensionTestSpecs to only those that match any of the provided SelectFunctions. +// if no specs are selected, it will throw an error +func (specs ExtensionTestSpecs) MustSelectAny(selectFns []SelectFunction) (ExtensionTestSpecs, error) { + filtered := specs.SelectAny(selectFns) + if len(filtered) == 0 { + return filtered, fmt.Errorf("no specs selected with specified SelectFunctions") + } + + return filtered, nil +} + +// SelectAll filters the ExtensionTestSpecs to only those that match all the provided SelectFunctions +func (specs ExtensionTestSpecs) SelectAll(selectFns []SelectFunction) ExtensionTestSpecs { + filtered := ExtensionTestSpecs{} + for _, spec := range specs { + anyFalse := false + for _, selectFn := range selectFns { + if !selectFn(spec) { + anyFalse = true + break + } + } + if !anyFalse { + filtered = append(filtered, spec) + } + } + + return filtered +} + +// MustSelectAll filters the ExtensionTestSpecs to only those that match all the provided SelectFunctions. +// if no specs are selected, it will throw an error +func (specs ExtensionTestSpecs) MustSelectAll(selectFns []SelectFunction) (ExtensionTestSpecs, error) { + filtered := specs.SelectAll(selectFns) + if len(filtered) == 0 { + return filtered, fmt.Errorf("no specs selected with specified SelectFunctions") + } + + return filtered, nil +} + +// ModuleTestsOnly ensures that ginkgo tests from vendored sources aren't selected. Unfortunately, making +// use of kubernetes test helpers results in the entire Ginkgo suite being initialized (ginkgo loves global state), +// so we need to be careful about which tests we select. +// +// A test is excluded if ALL of its code locations with full paths are external (vendored or from external test +// suites). If at least one code location with a full path is from the local module, the test is included, because +// local tests may legitimately call helper functions from vendored test frameworks. +func ModuleTestsOnly() SelectFunction { + return func(spec *ExtensionTestSpec) bool { + hasLocalCode := false + + for _, cl := range spec.CodeLocations { + // Short-form code locations (e.g., "set up framework | framework.go:200") are ignored in this determination. + if !strings.Contains(cl, "/") { + continue + } + + // If this code location is not external (vendored or k8s test), it's local code + if !(strings.Contains(cl, "/vendor/") || strings.HasPrefix(cl, "k8s.io/kubernetes")) { + hasLocalCode = true + break + } + } + + // Include the test only if it has at least one local code location + return hasLocalCode + } +} + +// AllTestsIncludingVendored is an alternative to ModuleTestsOnly, which would explicitly opt-in +// to including vendored tests. +func AllTestsIncludingVendored() SelectFunction { + return func(spec *ExtensionTestSpec) bool { + return true + } +} + +// NameContains returns a function that selects specs whose name contains the provided string +func NameContains(name string) SelectFunction { + return func(spec *ExtensionTestSpec) bool { + return strings.Contains(spec.Name, name) + } +} + +// NameContainsAll returns a function that selects specs whose name contains each of the provided contents strings +func NameContainsAll(contents ...string) SelectFunction { + return func(spec *ExtensionTestSpec) bool { + for _, content := range contents { + if !strings.Contains(spec.Name, content) { + return false + } + } + return true + } +} + +// HasLabel returns a function that selects specs with the provided label +func HasLabel(label string) SelectFunction { + return func(spec *ExtensionTestSpec) bool { + return spec.Labels.Has(label) + } +} + +// HasTagWithValue returns a function that selects specs containing a tag with the provided key and value +func HasTagWithValue(key, value string) SelectFunction { + return func(spec *ExtensionTestSpec) bool { + return spec.Tags[key] == value + } +} + +// WithLifecycle returns a function that selects specs with the provided Lifecycle +func WithLifecycle(lifecycle Lifecycle) SelectFunction { + return func(spec *ExtensionTestSpec) bool { + return spec.Lifecycle == lifecycle + } +} + +func (specs ExtensionTestSpecs) Names() []string { + var names []string + for _, spec := range specs { + names = append(names, spec.Name) + } + return names +} + +// Run executes all the specs in parallel, up to maxConcurrent at the same time. Results +// are written to the given ResultWriter after each spec has completed execution. BeforeEach, +// BeforeAll, AfterEach, AfterAll hooks are executed when specified. "Each" hooks must be thread +// safe. Returns an error if any test spec failed, indicating the quantity of failures. +func (specs ExtensionTestSpecs) Run(ctx context.Context, w ResultWriter, maxConcurrent int) ([]*ExtensionTestResult, error) { + queue := make(chan *ExtensionTestSpec) + terminalFailures := atomic.Int64{} + nonTerminalFailures := atomic.Int64{} + + // Execute beforeAll + for _, spec := range specs { + for _, beforeAllTask := range spec.beforeAll { + beforeAllTask.Run() + } + } + + // Feed the queue + go func() { + specs.Walk(func(spec *ExtensionTestSpec) { + queue <- spec + }) + close(queue) + }() + + // if we have only a single spec to run, we do that differently than running multiple. + // multiple specs can run in parallel and do so by exec-ing back into the binary with `run-test` with a single test to execute. + // This means that to avoid infinite recursion, when requesting a single test to run + // we need to run it in process. + runSingleSpec := len(specs) == 1 + + // Start consumers + var wg sync.WaitGroup + resultChan := make(chan *ExtensionTestResult, len(specs)) + for i := 0; i < maxConcurrent; i++ { + wg.Add(1) + go func() { + defer wg.Done() + for spec := range queue { + for _, beforeEachTask := range spec.beforeEach { + beforeEachTask.Run(*spec) + } + + res := runSpec(ctx, spec, runSingleSpec) + if res.Result == ResultFailed { + if res.Lifecycle.IsTerminal() { + terminalFailures.Add(1) + } else { + nonTerminalFailures.Add(1) + } + } + + for _, afterEachTask := range spec.afterEach { + afterEachTask.Run(res) + } + + // We can't assume the runner will set the name of a test; it may not know it. Even if + // it does, we may want to modify it (e.g. k8s-tests for annotations currently). + res.Name = spec.Name + w.Write(res) + resultChan <- res + } + }() + } + + // Wait for all consumers to finish + wg.Wait() + close(resultChan) + + // Execute afterAll + for _, spec := range specs { + for _, afterAllTask := range spec.afterAll { + afterAllTask.Run() + } + } + + var results []*ExtensionTestResult + for res := range resultChan { + results = append(results, res) + } + + terminalFailCount := terminalFailures.Load() + nonTerminalFailCount := nonTerminalFailures.Load() + + // Non-terminal failures don't cause exit 1, but we still log them + if nonTerminalFailCount > 0 { + fmt.Fprintf(os.Stderr, "%d informing tests failed (not terminal)\n", nonTerminalFailCount) + } + + // Only exit with error if terminal lifecycle tests failed + if terminalFailCount > 0 { + if nonTerminalFailCount > 0 { + return results, fmt.Errorf("%d tests failed (%d informing)", terminalFailCount+nonTerminalFailCount, nonTerminalFailCount) + } + return results, fmt.Errorf("%d tests failed", terminalFailCount) + } + + return results, nil +} + +// AddBeforeAll adds a function to be run once before all tests start executing. +func (specs ExtensionTestSpecs) AddBeforeAll(fn func()) { + task := &OneTimeTask{fn: fn} + specs.Walk(func(spec *ExtensionTestSpec) { + spec.beforeAll = append(spec.beforeAll, task) + }) +} + +// AddAfterAll adds a function to be run once after all tests have finished. +func (specs ExtensionTestSpecs) AddAfterAll(fn func()) { + task := &OneTimeTask{fn: fn} + specs.Walk(func(spec *ExtensionTestSpec) { + spec.afterAll = append(spec.afterAll, task) + }) +} + +// AddBeforeEach adds a function that runs before each test starts executing. The ExtensionTestSpec is +// passed in for contextual information, but must not be modified. The provided function must be thread +// safe. +func (specs ExtensionTestSpecs) AddBeforeEach(fn func(spec ExtensionTestSpec)) { + task := &SpecTask{fn: fn} + specs.Walk(func(spec *ExtensionTestSpec) { + spec.beforeEach = append(spec.beforeEach, task) + }) +} + +// AddAfterEach adds a function that runs after each test has finished executing. The ExtensionTestResult +// can be modified if needed. The provided function must be thread safe. +func (specs ExtensionTestSpecs) AddAfterEach(fn func(task *ExtensionTestResult)) { + task := &TestResultTask{fn: fn} + specs.Walk(func(spec *ExtensionTestSpec) { + spec.afterEach = append(spec.afterEach, task) + }) +} + +// MustFilter filters specs using the given celExprs. Each celExpr is OR'd together, if any +// match the spec is included in the filtered set. If your CEL expression is invalid or filtering +// otherwise fails, this function panics. +func (specs ExtensionTestSpecs) MustFilter(celExprs []string) ExtensionTestSpecs { + specs, err := specs.Filter(celExprs) + if err != nil { + panic(fmt.Sprintf("filter did not succeed: %s", err.Error())) + } + + return specs +} + +// Filter filters specs using the given celExprs. Each celExpr is OR'd together, if any +// match the spec is included in the filtered set. +func (specs ExtensionTestSpecs) Filter(celExprs []string) (ExtensionTestSpecs, error) { + var filteredSpecs ExtensionTestSpecs + + // Empty filters returns all + if len(celExprs) == 0 { + return specs, nil + } + + env, err := cel.NewEnv( + cel.Declarations( + decls.NewVar("source", decls.String), + decls.NewVar("name", decls.String), + decls.NewVar("originalName", decls.String), + decls.NewVar("labels", decls.NewListType(decls.String)), + decls.NewVar("codeLocations", decls.NewListType(decls.String)), + decls.NewVar("tags", decls.NewMapType(decls.String, decls.String)), + ), + ) + if err != nil { + return nil, fmt.Errorf("failed to create CEL environment: %w", err) + } + + // OR all expressions together + for _, spec := range specs { + include := false + for _, celExpr := range celExprs { + prg, err := programForCEL(env, celExpr) + if err != nil { + return nil, err + } + out, _, err := prg.Eval(map[string]interface{}{ + "name": spec.Name, + "source": spec.Source, + "originalName": spec.OriginalName, + "labels": spec.Labels.UnsortedList(), + "codeLocations": spec.CodeLocations, + "tags": spec.Tags, + }) + if err != nil { + return nil, fmt.Errorf("error evaluating CEL expression: %v", err) + } + + // If any CEL expression evaluates to true, include the TestSpec + if out == types.True { + include = true + break + } + } + if include { + filteredSpecs = append(filteredSpecs, spec) + } + } + + return filteredSpecs, nil +} + +func programForCEL(env *cel.Env, celExpr string) (cel.Program, error) { + // Parse CEL expression + ast, iss := env.Parse(celExpr) + if iss.Err() != nil { + return nil, fmt.Errorf("error parsing CEL expression '%s': %v", celExpr, iss.Err()) + } + + // Check the AST + checked, iss := env.Check(ast) + if iss.Err() != nil { + return nil, fmt.Errorf("error checking CEL expression '%s': %v", celExpr, iss.Err()) + } + + // Create a CEL program from the checked AST + prg, err := env.Program(checked) + if err != nil { + return nil, fmt.Errorf("error creating CEL program: %v", err) + } + return prg, nil +} + +// FilterByEnvironment checks both the Include and Exclude fields of the ExtensionTestSpec to return those specs which match. +// Tests will be included by default unless they are explicitly excluded. If Include is specified, only those tests matching +// the CEL expression will be included. +// +// See helper functions in extensiontests/environment.go to craft CEL expressions +func (specs ExtensionTestSpecs) FilterByEnvironment(envFlags flags.EnvironmentalFlags) (ExtensionTestSpecs, error) { + var filteredSpecs ExtensionTestSpecs + if envFlags.IsEmpty() { + return specs, nil + } + + env, err := cel.NewEnv( + cel.Declarations( + decls.NewVar("apiGroups", decls.NewListType(decls.String)), + decls.NewVar("architecture", decls.String), + decls.NewVar("externalConnectivity", decls.String), + decls.NewVar("fact_keys", decls.NewListType(decls.String)), + decls.NewVar("facts", decls.NewMapType(decls.String, decls.String)), + decls.NewVar("featureGates", decls.NewListType(decls.String)), + decls.NewVar("network", decls.String), + decls.NewVar("networkStack", decls.String), + decls.NewVar("optionalCapabilities", decls.NewListType(decls.String)), + decls.NewVar("platform", decls.String), + decls.NewVar("topology", decls.String), + decls.NewVar("upgrade", decls.String), + decls.NewVar("version", decls.String), + ), + ) + if err != nil { + return nil, fmt.Errorf("failed to create CEL environment: %w", err) + } + factKeys := make([]string, len(envFlags.Facts)) + for k := range envFlags.Facts { + factKeys = append(factKeys, k) + } + vars := map[string]interface{}{ + "apiGroups": envFlags.APIGroups, + "architecture": envFlags.Architecture, + "externalConnectivity": envFlags.ExternalConnectivity, + "fact_keys": factKeys, + "facts": envFlags.Facts, + "featureGates": envFlags.FeatureGates, + "network": envFlags.Network, + "networkStack": envFlags.NetworkStack, + "optionalCapabilities": envFlags.OptionalCapabilities, + "platform": envFlags.Platform, + "topology": envFlags.Topology, + "upgrade": envFlags.Upgrade, + "version": envFlags.Version, + } + + for _, spec := range specs { + envSel := spec.EnvironmentSelector + // If there is no include or exclude CEL, include it implicitly + if envSel.IsEmpty() { + filteredSpecs = append(filteredSpecs, spec) + continue + } + + if envSel.Exclude != "" { + prg, err := programForCEL(env, envSel.Exclude) + if err != nil { + return nil, err + } + out, _, err := prg.Eval(vars) + if err != nil { + return nil, fmt.Errorf("error evaluating CEL expression: %v", err) + } + // If it is explicitly excluded, don't check include + if out == types.True { + continue + } + } + + if envSel.Include != "" { + prg, err := programForCEL(env, envSel.Include) + if err != nil { + return nil, err + } + out, _, err := prg.Eval(vars) + if err != nil { + return nil, fmt.Errorf("error evaluating CEL expression: %v", err) + } + + if out == types.True { + filteredSpecs = append(filteredSpecs, spec) + } + } else { // If it hasn't been excluded, and there is no "include" it will be implicitly included + filteredSpecs = append(filteredSpecs, spec) + } + + } + + return filteredSpecs, nil +} + +// AddLabel adds the labels to each spec. +func (specs ExtensionTestSpecs) AddLabel(labels ...string) ExtensionTestSpecs { + for i := range specs { + specs[i].Labels.Insert(labels...) + } + + return specs +} + +// RemoveLabel removes the labels from each spec. +func (specs ExtensionTestSpecs) RemoveLabel(labels ...string) ExtensionTestSpecs { + for i := range specs { + specs[i].Labels.Delete(labels...) + } + + return specs +} + +// SetTag specifies a key/value pair for each spec. +func (specs ExtensionTestSpecs) SetTag(key, value string) ExtensionTestSpecs { + for i := range specs { + specs[i].Tags[key] = value + } + + return specs +} + +// UnsetTag removes the specified key from each spec. +func (specs ExtensionTestSpecs) UnsetTag(key string) ExtensionTestSpecs { + for i := range specs { + delete(specs[i].Tags, key) + } + + return specs +} + +// Include adds the specified CEL expression to explicitly include tests by environment to each spec +func (specs ExtensionTestSpecs) Include(includeCEL string) ExtensionTestSpecs { + for _, spec := range specs { + spec.Include(includeCEL) + } + return specs +} + +// Exclude adds the specified CEL expression to explicitly exclude tests by environment to each spec +func (specs ExtensionTestSpecs) Exclude(excludeCEL string) ExtensionTestSpecs { + for _, spec := range specs { + spec.Exclude(excludeCEL) + } + return specs +} + +// Include adds the specified CEL expression to explicitly include tests by environment. +// If there is already an "include" defined, it will OR the expressions together +func (spec *ExtensionTestSpec) Include(includeCEL string) *ExtensionTestSpec { + existingInclude := spec.EnvironmentSelector.Include + if existingInclude != "" { + includeCEL = fmt.Sprintf("(%s) || (%s)", existingInclude, includeCEL) + } + + spec.EnvironmentSelector.Include = includeCEL + return spec +} + +// Exclude adds the specified CEL expression to explicitly exclude tests by environment. +// If there is already an "exclude" defined, it will OR the expressions together +func (spec *ExtensionTestSpec) Exclude(excludeCEL string) *ExtensionTestSpec { + existingExclude := spec.EnvironmentSelector.Exclude + if existingExclude != "" { + excludeCEL = fmt.Sprintf("(%s) || (%s)", existingExclude, excludeCEL) + } + + spec.EnvironmentSelector.Exclude = excludeCEL + return spec +} + +func runSpec(ctx context.Context, spec *ExtensionTestSpec, runSingleSpec bool) *ExtensionTestResult { + startTime := time.Now().UTC() + var res *ExtensionTestResult + if runSingleSpec || spec.RunParallel == nil { + res = spec.Run(ctx) + } else { + res = spec.RunParallel(ctx) + } + duration := time.Since(startTime) + endTime := startTime.Add(duration).UTC() + if res == nil { + // this shouldn't happen + panic(fmt.Sprintf("test produced no result: %s", spec.Name)) + } + + res.Lifecycle = spec.Lifecycle + + // If the runner doesn't populate this info, we should set it + if res.StartTime == nil { + res.StartTime = dbtime.Ptr(startTime) + } + if res.EndTime == nil { + res.EndTime = dbtime.Ptr(endTime) + } + if res.Duration == 0 { + res.Duration = duration.Milliseconds() + } + + return res +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/task.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/task.go new file mode 100644 index 0000000000..e808bea87b --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/task.go @@ -0,0 +1,31 @@ +package extensiontests + +import "sync/atomic" + +type SpecTask struct { + fn func(spec ExtensionTestSpec) +} + +func (t *SpecTask) Run(spec ExtensionTestSpec) { + t.fn(spec) +} + +type TestResultTask struct { + fn func(result *ExtensionTestResult) +} + +func (t *TestResultTask) Run(result *ExtensionTestResult) { + t.fn(result) +} + +type OneTimeTask struct { + fn func() + executed int32 // Atomic boolean to indicate whether the function has been run +} + +func (t *OneTimeTask) Run() { + // Ensure one-time tasks are only run once + if atomic.CompareAndSwapInt32(&t.executed, 0, 1) { + t.fn() + } +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/types.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/types.go new file mode 100644 index 0000000000..cd23be81ff --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests/types.go @@ -0,0 +1,119 @@ +package extensiontests + +import ( + "context" + + "github.com/openshift-eng/openshift-tests-extension/pkg/dbtime" + "github.com/openshift-eng/openshift-tests-extension/pkg/util/sets" +) + +type Lifecycle string + +var LifecycleInforming Lifecycle = "informing" +var LifecycleBlocking Lifecycle = "blocking" + +// IsTerminal returns true if failures in tests with this lifecycle should cause +// the test run to exit with a non-zero exit code. +func (l Lifecycle) IsTerminal() bool { + return l != LifecycleInforming +} + +type ExtensionTestSpecs []*ExtensionTestSpec + +type ExtensionTestSpec struct { + Name string `json:"name"` + + // OriginalName contains the very first name this test was ever known as, used to preserve + // history across all names. + OriginalName string `json:"originalName,omitempty"` + + // Labels are single string values to apply to the test spec + Labels sets.Set[string] `json:"labels"` + + // Tags are key:value pairs + Tags map[string]string `json:"tags,omitempty"` + + // Resources gives optional information about what's required to run this test. + Resources Resources `json:"resources"` + + // Source is the origin of the test. + Source string `json:"source"` + + // CodeLocations are the files where the spec originates from. + CodeLocations []string `json:"codeLocations,omitempty"` + + // Lifecycle informs the executor whether the test is informing only, and should not cause the + // overall job run to fail, or if it's blocking where a failure of the test is fatal. + // Informing lifecycle tests can be used temporarily to gather information about a test's stability. + // Tests must not remain informing forever. + Lifecycle Lifecycle `json:"lifecycle"` + + // EnvironmentSelector allows for CEL expressions to be used to control test inclusion + EnvironmentSelector EnvironmentSelector `json:"environmentSelector,omitempty"` + + // Run invokes a test in-process. It must not call back into `ote-binary run-test` because that will usually + // cause an infinite recursion. + Run func(ctx context.Context) *ExtensionTestResult `json:"-"` + + // RunParallel invokes a test in parallel with other tests. This is usually done by exec-ing out + // to the `ote-binary run-test "test name"` commmand and interpretting the result. + RunParallel func(ctx context.Context) *ExtensionTestResult `json:"-"` + + // Hook functions + afterAll []*OneTimeTask + beforeAll []*OneTimeTask + afterEach []*TestResultTask + beforeEach []*SpecTask +} + +type Resources struct { + Isolation Isolation `json:"isolation"` + Memory string `json:"memory,omitempty"` + Duration string `json:"duration,omitempty"` + Timeout string `json:"timeout,omitempty"` +} + +type Isolation struct { + Mode string `json:"mode,omitempty"` + Conflict []string `json:"conflict,omitempty"` + Taint []string `json:"taint,omitempty"` + Toleration []string `json:"toleration,omitempty"` +} + +type EnvironmentSelector struct { + Include string `json:"include,omitempty"` + Exclude string `json:"exclude,omitempty"` +} + +func (e EnvironmentSelector) IsEmpty() bool { + return e.Include == "" && e.Exclude == "" +} + +type ExtensionTestResults []*ExtensionTestResult + +type Result string + +var ResultPassed Result = "passed" +var ResultSkipped Result = "skipped" +var ResultFailed Result = "failed" + +type ExtensionTestResult struct { + Name string `json:"name"` + Lifecycle Lifecycle `json:"lifecycle"` + Duration int64 `json:"duration"` + StartTime *dbtime.DBTime `json:"startTime"` + EndTime *dbtime.DBTime `json:"endTime"` + Result Result `json:"result"` + Output string `json:"output"` + Error string `json:"error,omitempty"` + Details []Details `json:"details,omitempty"` +} + +// Details are human-readable messages to further explain skips, timeouts, etc. +// It can also be used to provide contemporaneous information about failures +// that may not be easily returned by must-gather. For larger artifacts (greater than +// 10KB, write them to $EXTENSION_ARTIFACTS_DIR. +type Details struct { + Name string `json:"name"` + Value interface{} `json:"value"` +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/registry.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/registry.go new file mode 100644 index 0000000000..bbae421df7 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/registry.go @@ -0,0 +1,39 @@ +package extension + +const DefaultExtension = "default" + +type Registry struct { + extensions map[string]*Extension +} + +func NewRegistry() *Registry { + var r Registry + return &r +} + +func (r *Registry) Walk(walkFn func(*Extension)) { + for k := range r.extensions { + if k == DefaultExtension { + continue + } + walkFn(r.extensions[k]) + } +} + +func (r *Registry) Get(name string) *Extension { + return r.extensions[name] +} + +func (r *Registry) Register(extension *Extension) { + if r.extensions == nil { + r.extensions = make(map[string]*Extension) + // first extension is default + r.extensions[DefaultExtension] = extension + } + + r.extensions[extension.Component.Identifier()] = extension +} + +func (r *Registry) Deregister(name string) { + delete(r.extensions, name) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/types.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/types.go new file mode 100644 index 0000000000..00d2d9d663 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/extension/types.go @@ -0,0 +1,94 @@ +package extension + +import ( + "time" + + "github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests" + "github.com/openshift-eng/openshift-tests-extension/pkg/util/sets" +) + +const CurrentExtensionAPIVersion = "v1.1" + +// Extension represents an extension to openshift-tests. +type Extension struct { + APIVersion string `json:"apiVersion"` + Source Source `json:"source"` + Component Component `json:"component"` + + // Suites that the extension wants to advertise/participate in. + Suites []Suite `json:"suites"` + + Images []Image `json:"images"` + + // Private data + specs extensiontests.ExtensionTestSpecs + obsoleteTests sets.Set[string] +} + +// Source contains the details of the commit and source URL. +type Source struct { + // Commit from which this binary was compiled. + Commit string `json:"commit"` + // BuildDate ISO8601 string of when the binary was built + BuildDate string `json:"build_date"` + // GitTreeState lets you know the status of the git tree (clean/dirty) + GitTreeState string `json:"git_tree_state"` + // SourceURL contains the url of the git repository (if known) that this extension was built from. + SourceURL string `json:"source_url,omitempty"` +} + +// Component represents the component the binary acts on. +type Component struct { + // The product this component is part of. + Product string `json:"product"` + // The type of the component. + Kind string `json:"type"` + // The name of the component. + Name string `json:"name"` +} + +type ClusterStability string + +var ( + // ClusterStabilityStable means that at no point during testing do we expect a component to take downtime and upgrades are not happening. + ClusterStabilityStable ClusterStability = "Stable" + + // ClusterStabilityDisruptive means that the suite is expected to induce outages to the cluster. + ClusterStabilityDisruptive ClusterStability = "Disruptive" + + // ClusterStabilityUpgrade was previously defined, but was removed by @deads2k. Please contact him if you find a use + // case for it and needs to be reintroduced. + // ClusterStabilityUpgrade ClusterStability = "Upgrade" +) + +// Suite represents additional suites the extension wants to advertise. Child suites when being executed in the context +// of a parent will have their count, parallelism, stability, and timeout options superseded by the parent's suite. +type Suite struct { + Name string `json:"name"` + Description string `json:"description"` + + // Parents are the parent suites this suite is part of. + Parents []string `json:"parents,omitempty"` + // Qualifiers are CEL expressions that are OR'd together for test selection that are members of the suite. + Qualifiers []string `json:"qualifiers,omitempty"` + + // Count is the default number of times to execute each test in this suite. + Count int `json:"count,omitempty"` + // Parallelism is the maximum parallelism of this suite. + Parallelism int `json:"parallelism,omitempty"` + // ClusterStability informs openshift-tests whether this entire test suite is expected to be disruptive or not + // to normal cluster operations. + ClusterStability ClusterStability `json:"clusterStability,omitempty"` + // TestTimeout is the default timeout for tests in this suite. + TestTimeout *time.Duration `json:"testTimeout,omitempty"` +} + +type Image struct { + Index int `json:"index"` + Registry string `json:"registry"` + Name string `json:"name"` + Version string `json:"version"` + // Mapped is the image reference that this image is mirrored to by the image mirror tool. + // This field should be populated if the mirrored image reference is predetermined by the test extensions. + Mapped *Image `json:"mapped,omitempty"` +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/component.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/component.go new file mode 100644 index 0000000000..ca9e425c44 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/component.go @@ -0,0 +1,25 @@ +package flags + +import ( + "github.com/spf13/pflag" +) + +const DefaultExtension = "default" + +// ComponentFlags contains information for specifying the component. +type ComponentFlags struct { + Component string +} + +func NewComponentFlags() *ComponentFlags { + return &ComponentFlags{ + Component: DefaultExtension, + } +} + +func (f *ComponentFlags) BindFlags(fs *pflag.FlagSet) { + fs.StringVar(&f.Component, + "component", + f.Component, + "specify the component to enable") +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/concurrency.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/concurrency.go new file mode 100644 index 0000000000..2db07c7654 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/concurrency.go @@ -0,0 +1,23 @@ +package flags + +import "github.com/spf13/pflag" + +// ConcurrencyFlags contains information for configuring concurrency +type ConcurrencyFlags struct { + MaxConcurency int +} + +func NewConcurrencyFlags() *ConcurrencyFlags { + return &ConcurrencyFlags{ + MaxConcurency: 10, + } +} + +func (f *ConcurrencyFlags) BindFlags(fs *pflag.FlagSet) { + fs.IntVarP(&f.MaxConcurency, + "max-concurrency", + "c", + f.MaxConcurency, + "maximum number of tests to run in parallel", + ) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/environment.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/environment.go new file mode 100644 index 0000000000..af7a0258e2 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/environment.go @@ -0,0 +1,114 @@ +package flags + +import ( + "reflect" + + "github.com/spf13/pflag" +) + +type EnvironmentalFlags struct { + APIGroups []string + Architecture string + ExternalConnectivity string + Facts map[string]string + FeatureGates []string + Network string + NetworkStack string + OptionalCapabilities []string + Platform string + Topology string + Upgrade string + Version string +} + +func NewEnvironmentalFlags() *EnvironmentalFlags { + return &EnvironmentalFlags{} +} + +func (f *EnvironmentalFlags) BindFlags(fs *pflag.FlagSet) { + fs.StringArrayVar(&f.APIGroups, + "api-group", + f.APIGroups, + "The API groups supported by this cluster. Since: v1.1") + fs.StringVar(&f.Architecture, + "architecture", + "", + "The CPU architecture of the target cluster (\"amd64\", \"arm64\"). Since: v1.0") + fs.StringVar(&f.ExternalConnectivity, + "external-connectivity", + "", + "The External Connectivity of the target cluster (\"Disconnected\", \"Direct\", \"Proxied\"). Since: v1.0") + fs.StringArrayVar(&f.FeatureGates, + "feature-gate", + f.FeatureGates, + "The feature gates enabled on this cluster. Since: v1.1") + fs.StringToStringVar(&f.Facts, + "fact", + make(map[string]string), + "Facts advertised by cluster components. Since: v1.0") + fs.StringVar(&f.Network, + "network", + "", + "The network of the target cluster (\"ovn\", \"sdn\"). Since: v1.0") + fs.StringVar(&f.NetworkStack, + "network-stack", + "", + "The network stack of the target cluster (\"ipv6\", \"ipv4\", \"dual\"). Since: v1.0") + fs.StringSliceVar(&f.OptionalCapabilities, + "optional-capability", + []string{}, + "An Optional Capability of the target cluster. Can be passed multiple times. Since: v1.0") + fs.StringVar(&f.Platform, + "platform", + "", + "The hardware or cloud platform (\"aws\", \"gcp\", \"metal\", ...). Since: v1.0") + fs.StringVar(&f.Topology, + "topology", + "", + "The target cluster topology (\"ha\", \"microshift\", ...). Since: v1.0") + fs.StringVar(&f.Upgrade, + "upgrade", + "", + "The upgrade that was performed prior to the test run (\"micro\", \"minor\"). Since: v1.0") + fs.StringVar(&f.Version, + "version", + "", + "\"major.minor\" version of target cluster. Since: v1.0") +} + +func (f *EnvironmentalFlags) IsEmpty() bool { + v := reflect.ValueOf(*f) + + for i := 0; i < v.NumField(); i++ { + field := v.Field(i) + + switch field.Kind() { + case reflect.Slice, reflect.Map: + if !field.IsNil() && field.Len() > 0 { + return false + } + default: + if !reflect.DeepEqual(field.Interface(), reflect.Zero(field.Type()).Interface()) { + return false + } + } + } + + return true +} + +// EnvironmentFlagVersions holds the "Since" version metadata for each flag. +var EnvironmentFlagVersions = map[string]string{ + "api-group": "v1.1", + "architecture": "v1.0", + "external-connectivity": "v1.0", + "fact": "v1.0", + "feature-gate": "v1.1", + "network": "v1.0", + "network-stack": "v1.0", + "optional-capability": "v1.0", + "platform": "v1.0", + "topology": "v1.0", + "upgrade": "v1.0", + "version": "v1.0", +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/names.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/names.go new file mode 100644 index 0000000000..9e58648395 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/names.go @@ -0,0 +1,24 @@ +package flags + +import ( + "github.com/spf13/pflag" +) + +// NamesFlags contains information for specifying multiple test names. +type NamesFlags struct { + Names []string +} + +func NewNamesFlags() *NamesFlags { + return &NamesFlags{ + Names: []string{}, + } +} + +func (f *NamesFlags) BindFlags(fs *pflag.FlagSet) { + fs.StringArrayVarP(&f.Names, + "names", + "n", + f.Names, + "specify test name (can be specified multiple times)") +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/output.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/output.go new file mode 100644 index 0000000000..24f49f6387 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/output.go @@ -0,0 +1,95 @@ +package flags + +import ( + "encoding/json" + "reflect" + "strings" + + "github.com/pkg/errors" + "github.com/spf13/pflag" +) + +// OutputFlags contains information for specifying multiple test names. +type OutputFlags struct { + Output string +} + +func NewOutputFlags() *OutputFlags { + return &OutputFlags{ + Output: "json", + } +} + +func (f *OutputFlags) BindFlags(fs *pflag.FlagSet) { + fs.StringVarP(&f.Output, + "output", + "o", + f.Output, + "output mode") +} + +func (o *OutputFlags) Marshal(v interface{}) ([]byte, error) { + switch o.Output { + case "", "json": + j, err := json.MarshalIndent(&v, "", " ") + if err != nil { + return nil, err + } + return j, nil + case "jsonl": + // Check if v is a slice or array + val := reflect.ValueOf(v) + if val.Kind() == reflect.Slice || val.Kind() == reflect.Array { + var result []byte + for i := 0; i < val.Len(); i++ { + item := val.Index(i).Interface() + j, err := json.Marshal(item) + if err != nil { + return nil, err + } + result = append(result, j...) + result = append(result, '\n') // Append newline after each item + } + return result, nil + } + return nil, errors.New("jsonl format requires a slice or array") + case "names": + val := reflect.ValueOf(v) + if val.Kind() == reflect.Slice || val.Kind() == reflect.Array { + var names []string + outerLoop: + for i := 0; i < val.Len(); i++ { + item := val.Index(i) + // Check for Name() or Identifier() methods + itemInterface := item.Interface() + nameFuncs := []string{"Name", "Identifier"} + for _, fn := range nameFuncs { + method := reflect.ValueOf(itemInterface).MethodByName(fn) + if method.IsValid() && method.Kind() == reflect.Func && method.Type().NumIn() == 0 && method.Type().NumOut() == 1 && method.Type().Out(0).Kind() == reflect.String { + name := method.Call(nil)[0].String() + names = append(names, name) + continue outerLoop + } + } + + // Dereference pointer if needed + if item.Kind() == reflect.Ptr { + item = item.Elem() + } + // Check for struct with Name field + if item.Kind() == reflect.Struct { + nameField := item.FieldByName("Name") + if nameField.IsValid() && nameField.Kind() == reflect.String { + names = append(names, nameField.String()) + } + } else { + return nil, errors.New("items must have a Name field or a Name() method") + } + } + return []byte(strings.Join(names, "\n")), nil + } + return nil, errors.New("names format requires an array of structs") + default: + return nil, errors.Errorf("invalid output format: %s", o.Output) + } +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/suite.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/suite.go new file mode 100644 index 0000000000..23de832a85 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/flags/suite.go @@ -0,0 +1,21 @@ +package flags + +import ( + "github.com/spf13/pflag" +) + +// SuiteFlags contains information for specifying the suite. +type SuiteFlags struct { + Suite string +} + +func NewSuiteFlags() *SuiteFlags { + return &SuiteFlags{} +} + +func (f *SuiteFlags) BindFlags(fs *pflag.FlagSet) { + fs.StringVar(&f.Suite, + "suite", + f.Suite, + "specify the suite to use") +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/junit/types.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/junit/types.go new file mode 100644 index 0000000000..0309fbd514 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/junit/types.go @@ -0,0 +1,104 @@ +package junit + +import ( + "encoding/xml" +) + +// The below types are directly marshalled into XML. The types correspond to jUnit +// XML schema, but do not contain all valid fields. For instance, the class name +// field for test cases is omitted, as this concept does not directly apply to Go. +// For XML specifications see http://help.catchsoftware.com/display/ET/JUnit+Format +// or view the XSD included in this package as 'junit.xsd' + +// TestSuites represents a flat collection of jUnit test suites. +type TestSuites struct { + XMLName xml.Name `xml:"testsuites"` + + // Suites are the jUnit test suites held in this collection + Suites []*TestSuite `xml:"testsuite"` +} + +// TestSuite represents a single jUnit test suite, potentially holding child suites. +type TestSuite struct { + XMLName xml.Name `xml:"testsuite"` + + // Name is the name of the test suite + Name string `xml:"name,attr"` + + // NumTests records the number of tests in the TestSuite + NumTests uint `xml:"tests,attr"` + + // NumSkipped records the number of skipped tests in the suite + NumSkipped uint `xml:"skipped,attr"` + + // NumFailed records the number of failed tests in the suite + NumFailed uint `xml:"failures,attr"` + + // Duration is the time taken in seconds to run all tests in the suite + Duration float64 `xml:"time,attr"` + + // Properties holds other properties of the test suite as a mapping of name to value + Properties []*TestSuiteProperty `xml:"properties,omitempty"` + + // TestCases are the test cases contained in the test suite + TestCases []*TestCase `xml:"testcases"` + + // Children holds nested test suites + Children []*TestSuite `xml:"testsuites"` //nolint +} + +// TestSuiteProperty contains a mapping of a property name to a value +type TestSuiteProperty struct { + XMLName xml.Name `xml:"properties"` + + Name string `xml:"name,attr"` + Value string `xml:"value,attr"` +} + +// TestCase represents a jUnit test case +type TestCase struct { + XMLName xml.Name `xml:"testcase"` + + // Name is the name of the test case + Name string `xml:"name,attr"` + + // Classname is an attribute set by the package type and is required + Classname string `xml:"classname,attr,omitempty"` + + // Duration is the time taken in seconds to run the test + Duration float64 `xml:"time,attr"` + + // SkipMessage holds the reason why the test was skipped + SkipMessage *SkipMessage `xml:"skipped"` + + // FailureOutput holds the output from a failing test + FailureOutput *FailureOutput `xml:"failure"` + + // SystemOut is output written to stdout during the execution of this test case + SystemOut string `xml:"system-out,omitempty"` + + // SystemErr is output written to stderr during the execution of this test case + SystemErr string `xml:"system-err,omitempty"` +} + +// SkipMessage holds a message explaining why a test was skipped +type SkipMessage struct { + XMLName xml.Name `xml:"skipped"` + + // Message explains why the test was skipped + Message string `xml:"message,attr,omitempty"` +} + +// FailureOutput holds the output from a failing test +type FailureOutput struct { + XMLName xml.Name `xml:"failure"` + + // Message holds the failure message from the test + Message string `xml:"message,attr"` + + // Output holds verbose failure output from the test + Output string `xml:",chardata"` +} + +// TestResult is the result of a test case +type TestResult string diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/LICENSE b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/LICENSE new file mode 100644 index 0000000000..d645695673 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/README.md b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/README.md new file mode 100644 index 0000000000..1a5def7723 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/README.md @@ -0,0 +1,3 @@ +This package is copy/pasted from [k8s.io/apimachinery](https://github.com/kubernetes/apimachinery/tree/master/pkg/util/sets) +to avoid a circular dependency with `openshift/kubernetes` as it requires OTE and, without having done this, +OTE would require `kubernetes/kubernetes`. diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/byte.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/byte.go new file mode 100644 index 0000000000..4d7a17c3af --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/byte.go @@ -0,0 +1,137 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +// Byte is a set of bytes, implemented via map[byte]struct{} for minimal memory consumption. +// +// Deprecated: use generic Set instead. +// new ways: +// s1 := Set[byte]{} +// s2 := New[byte]() +type Byte map[byte]Empty + +// NewByte creates a Byte from a list of values. +func NewByte(items ...byte) Byte { + return Byte(New[byte](items...)) +} + +// ByteKeySet creates a Byte from a keys of a map[byte](? extends interface{}). +// If the value passed in is not actually a map, this will panic. +func ByteKeySet[T any](theMap map[byte]T) Byte { + return Byte(KeySet(theMap)) +} + +// Insert adds items to the set. +func (s Byte) Insert(items ...byte) Byte { + return Byte(cast(s).Insert(items...)) +} + +// Delete removes all items from the set. +func (s Byte) Delete(items ...byte) Byte { + return Byte(cast(s).Delete(items...)) +} + +// Has returns true if and only if item is contained in the set. +func (s Byte) Has(item byte) bool { + return cast(s).Has(item) +} + +// HasAll returns true if and only if all items are contained in the set. +func (s Byte) HasAll(items ...byte) bool { + return cast(s).HasAll(items...) +} + +// HasAny returns true if any items are contained in the set. +func (s Byte) HasAny(items ...byte) bool { + return cast(s).HasAny(items...) +} + +// Clone returns a new set which is a copy of the current set. +func (s Byte) Clone() Byte { + return Byte(cast(s).Clone()) +} + +// Difference returns a set of objects that are not in s2. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.Difference(s2) = {a3} +// s2.Difference(s1) = {a4, a5} +func (s1 Byte) Difference(s2 Byte) Byte { + return Byte(cast(s1).Difference(cast(s2))) +} + +// SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.SymmetricDifference(s2) = {a3, a4, a5} +// s2.SymmetricDifference(s1) = {a3, a4, a5} +func (s1 Byte) SymmetricDifference(s2 Byte) Byte { + return Byte(cast(s1).SymmetricDifference(cast(s2))) +} + +// Union returns a new set which includes items in either s1 or s2. +// For example: +// s1 = {a1, a2} +// s2 = {a3, a4} +// s1.Union(s2) = {a1, a2, a3, a4} +// s2.Union(s1) = {a1, a2, a3, a4} +func (s1 Byte) Union(s2 Byte) Byte { + return Byte(cast(s1).Union(cast(s2))) +} + +// Intersection returns a new set which includes the item in BOTH s1 and s2 +// For example: +// s1 = {a1, a2} +// s2 = {a2, a3} +// s1.Intersection(s2) = {a2} +func (s1 Byte) Intersection(s2 Byte) Byte { + return Byte(cast(s1).Intersection(cast(s2))) +} + +// IsSuperset returns true if and only if s1 is a superset of s2. +func (s1 Byte) IsSuperset(s2 Byte) bool { + return cast(s1).IsSuperset(cast(s2)) +} + +// Equal returns true if and only if s1 is equal (as a set) to s2. +// Two sets are equal if their membership is identical. +// (In practice, this means same elements, order doesn't matter) +func (s1 Byte) Equal(s2 Byte) bool { + return cast(s1).Equal(cast(s2)) +} + +// List returns the contents as a sorted byte slice. +func (s Byte) List() []byte { + return List(cast(s)) +} + +// UnsortedList returns the slice with contents in random order. +func (s Byte) UnsortedList() []byte { + return cast(s).UnsortedList() +} + +// PopAny returns a single element from the set. +func (s Byte) PopAny() (byte, bool) { + return cast(s).PopAny() +} + +// Len returns the size of the set. +func (s Byte) Len() int { + return len(s) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/doc.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/doc.go new file mode 100644 index 0000000000..997f5e0330 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/doc.go @@ -0,0 +1,19 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Package sets has generic set and specified sets. Generic set will +// replace specified ones over time. And specific ones are deprecated. +package sets // import "github.com/openshift-eng/openshift-tests-extension/pkg/util/sets" diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/empty.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/empty.go new file mode 100644 index 0000000000..fbb1df06d9 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/empty.go @@ -0,0 +1,21 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +// Empty is public since it is used by some internal API objects for conversions between external +// string arrays and internal sets, and conversion logic requires public types today. +type Empty struct{} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int.go new file mode 100644 index 0000000000..5876fc9deb --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int.go @@ -0,0 +1,137 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +// Int is a set of ints, implemented via map[int]struct{} for minimal memory consumption. +// +// Deprecated: use generic Set instead. +// new ways: +// s1 := Set[int]{} +// s2 := New[int]() +type Int map[int]Empty + +// NewInt creates a Int from a list of values. +func NewInt(items ...int) Int { + return Int(New[int](items...)) +} + +// IntKeySet creates a Int from a keys of a map[int](? extends interface{}). +// If the value passed in is not actually a map, this will panic. +func IntKeySet[T any](theMap map[int]T) Int { + return Int(KeySet(theMap)) +} + +// Insert adds items to the set. +func (s Int) Insert(items ...int) Int { + return Int(cast(s).Insert(items...)) +} + +// Delete removes all items from the set. +func (s Int) Delete(items ...int) Int { + return Int(cast(s).Delete(items...)) +} + +// Has returns true if and only if item is contained in the set. +func (s Int) Has(item int) bool { + return cast(s).Has(item) +} + +// HasAll returns true if and only if all items are contained in the set. +func (s Int) HasAll(items ...int) bool { + return cast(s).HasAll(items...) +} + +// HasAny returns true if any items are contained in the set. +func (s Int) HasAny(items ...int) bool { + return cast(s).HasAny(items...) +} + +// Clone returns a new set which is a copy of the current set. +func (s Int) Clone() Int { + return Int(cast(s).Clone()) +} + +// Difference returns a set of objects that are not in s2. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.Difference(s2) = {a3} +// s2.Difference(s1) = {a4, a5} +func (s1 Int) Difference(s2 Int) Int { + return Int(cast(s1).Difference(cast(s2))) +} + +// SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.SymmetricDifference(s2) = {a3, a4, a5} +// s2.SymmetricDifference(s1) = {a3, a4, a5} +func (s1 Int) SymmetricDifference(s2 Int) Int { + return Int(cast(s1).SymmetricDifference(cast(s2))) +} + +// Union returns a new set which includes items in either s1 or s2. +// For example: +// s1 = {a1, a2} +// s2 = {a3, a4} +// s1.Union(s2) = {a1, a2, a3, a4} +// s2.Union(s1) = {a1, a2, a3, a4} +func (s1 Int) Union(s2 Int) Int { + return Int(cast(s1).Union(cast(s2))) +} + +// Intersection returns a new set which includes the item in BOTH s1 and s2 +// For example: +// s1 = {a1, a2} +// s2 = {a2, a3} +// s1.Intersection(s2) = {a2} +func (s1 Int) Intersection(s2 Int) Int { + return Int(cast(s1).Intersection(cast(s2))) +} + +// IsSuperset returns true if and only if s1 is a superset of s2. +func (s1 Int) IsSuperset(s2 Int) bool { + return cast(s1).IsSuperset(cast(s2)) +} + +// Equal returns true if and only if s1 is equal (as a set) to s2. +// Two sets are equal if their membership is identical. +// (In practice, this means same elements, order doesn't matter) +func (s1 Int) Equal(s2 Int) bool { + return cast(s1).Equal(cast(s2)) +} + +// List returns the contents as a sorted int slice. +func (s Int) List() []int { + return List(cast(s)) +} + +// UnsortedList returns the slice with contents in random order. +func (s Int) UnsortedList() []int { + return cast(s).UnsortedList() +} + +// PopAny returns a single element from the set. +func (s Int) PopAny() (int, bool) { + return cast(s).PopAny() +} + +// Len returns the size of the set. +func (s Int) Len() int { + return len(s) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int32.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int32.go new file mode 100644 index 0000000000..2c640c5d0f --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int32.go @@ -0,0 +1,137 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +// Int32 is a set of int32s, implemented via map[int32]struct{} for minimal memory consumption. +// +// Deprecated: use generic Set instead. +// new ways: +// s1 := Set[int32]{} +// s2 := New[int32]() +type Int32 map[int32]Empty + +// NewInt32 creates a Int32 from a list of values. +func NewInt32(items ...int32) Int32 { + return Int32(New[int32](items...)) +} + +// Int32KeySet creates a Int32 from a keys of a map[int32](? extends interface{}). +// If the value passed in is not actually a map, this will panic. +func Int32KeySet[T any](theMap map[int32]T) Int32 { + return Int32(KeySet(theMap)) +} + +// Insert adds items to the set. +func (s Int32) Insert(items ...int32) Int32 { + return Int32(cast(s).Insert(items...)) +} + +// Delete removes all items from the set. +func (s Int32) Delete(items ...int32) Int32 { + return Int32(cast(s).Delete(items...)) +} + +// Has returns true if and only if item is contained in the set. +func (s Int32) Has(item int32) bool { + return cast(s).Has(item) +} + +// HasAll returns true if and only if all items are contained in the set. +func (s Int32) HasAll(items ...int32) bool { + return cast(s).HasAll(items...) +} + +// HasAny returns true if any items are contained in the set. +func (s Int32) HasAny(items ...int32) bool { + return cast(s).HasAny(items...) +} + +// Clone returns a new set which is a copy of the current set. +func (s Int32) Clone() Int32 { + return Int32(cast(s).Clone()) +} + +// Difference returns a set of objects that are not in s2. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.Difference(s2) = {a3} +// s2.Difference(s1) = {a4, a5} +func (s1 Int32) Difference(s2 Int32) Int32 { + return Int32(cast(s1).Difference(cast(s2))) +} + +// SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.SymmetricDifference(s2) = {a3, a4, a5} +// s2.SymmetricDifference(s1) = {a3, a4, a5} +func (s1 Int32) SymmetricDifference(s2 Int32) Int32 { + return Int32(cast(s1).SymmetricDifference(cast(s2))) +} + +// Union returns a new set which includes items in either s1 or s2. +// For example: +// s1 = {a1, a2} +// s2 = {a3, a4} +// s1.Union(s2) = {a1, a2, a3, a4} +// s2.Union(s1) = {a1, a2, a3, a4} +func (s1 Int32) Union(s2 Int32) Int32 { + return Int32(cast(s1).Union(cast(s2))) +} + +// Intersection returns a new set which includes the item in BOTH s1 and s2 +// For example: +// s1 = {a1, a2} +// s2 = {a2, a3} +// s1.Intersection(s2) = {a2} +func (s1 Int32) Intersection(s2 Int32) Int32 { + return Int32(cast(s1).Intersection(cast(s2))) +} + +// IsSuperset returns true if and only if s1 is a superset of s2. +func (s1 Int32) IsSuperset(s2 Int32) bool { + return cast(s1).IsSuperset(cast(s2)) +} + +// Equal returns true if and only if s1 is equal (as a set) to s2. +// Two sets are equal if their membership is identical. +// (In practice, this means same elements, order doesn't matter) +func (s1 Int32) Equal(s2 Int32) bool { + return cast(s1).Equal(cast(s2)) +} + +// List returns the contents as a sorted int32 slice. +func (s Int32) List() []int32 { + return List(cast(s)) +} + +// UnsortedList returns the slice with contents in random order. +func (s Int32) UnsortedList() []int32 { + return cast(s).UnsortedList() +} + +// PopAny returns a single element from the set. +func (s Int32) PopAny() (int32, bool) { + return cast(s).PopAny() +} + +// Len returns the size of the set. +func (s Int32) Len() int { + return len(s) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int64.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int64.go new file mode 100644 index 0000000000..bf3eb3ffa2 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/int64.go @@ -0,0 +1,137 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +// Int64 is a set of int64s, implemented via map[int64]struct{} for minimal memory consumption. +// +// Deprecated: use generic Set instead. +// new ways: +// s1 := Set[int64]{} +// s2 := New[int64]() +type Int64 map[int64]Empty + +// NewInt64 creates a Int64 from a list of values. +func NewInt64(items ...int64) Int64 { + return Int64(New[int64](items...)) +} + +// Int64KeySet creates a Int64 from a keys of a map[int64](? extends interface{}). +// If the value passed in is not actually a map, this will panic. +func Int64KeySet[T any](theMap map[int64]T) Int64 { + return Int64(KeySet(theMap)) +} + +// Insert adds items to the set. +func (s Int64) Insert(items ...int64) Int64 { + return Int64(cast(s).Insert(items...)) +} + +// Delete removes all items from the set. +func (s Int64) Delete(items ...int64) Int64 { + return Int64(cast(s).Delete(items...)) +} + +// Has returns true if and only if item is contained in the set. +func (s Int64) Has(item int64) bool { + return cast(s).Has(item) +} + +// HasAll returns true if and only if all items are contained in the set. +func (s Int64) HasAll(items ...int64) bool { + return cast(s).HasAll(items...) +} + +// HasAny returns true if any items are contained in the set. +func (s Int64) HasAny(items ...int64) bool { + return cast(s).HasAny(items...) +} + +// Clone returns a new set which is a copy of the current set. +func (s Int64) Clone() Int64 { + return Int64(cast(s).Clone()) +} + +// Difference returns a set of objects that are not in s2. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.Difference(s2) = {a3} +// s2.Difference(s1) = {a4, a5} +func (s1 Int64) Difference(s2 Int64) Int64 { + return Int64(cast(s1).Difference(cast(s2))) +} + +// SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.SymmetricDifference(s2) = {a3, a4, a5} +// s2.SymmetricDifference(s1) = {a3, a4, a5} +func (s1 Int64) SymmetricDifference(s2 Int64) Int64 { + return Int64(cast(s1).SymmetricDifference(cast(s2))) +} + +// Union returns a new set which includes items in either s1 or s2. +// For example: +// s1 = {a1, a2} +// s2 = {a3, a4} +// s1.Union(s2) = {a1, a2, a3, a4} +// s2.Union(s1) = {a1, a2, a3, a4} +func (s1 Int64) Union(s2 Int64) Int64 { + return Int64(cast(s1).Union(cast(s2))) +} + +// Intersection returns a new set which includes the item in BOTH s1 and s2 +// For example: +// s1 = {a1, a2} +// s2 = {a2, a3} +// s1.Intersection(s2) = {a2} +func (s1 Int64) Intersection(s2 Int64) Int64 { + return Int64(cast(s1).Intersection(cast(s2))) +} + +// IsSuperset returns true if and only if s1 is a superset of s2. +func (s1 Int64) IsSuperset(s2 Int64) bool { + return cast(s1).IsSuperset(cast(s2)) +} + +// Equal returns true if and only if s1 is equal (as a set) to s2. +// Two sets are equal if their membership is identical. +// (In practice, this means same elements, order doesn't matter) +func (s1 Int64) Equal(s2 Int64) bool { + return cast(s1).Equal(cast(s2)) +} + +// List returns the contents as a sorted int64 slice. +func (s Int64) List() []int64 { + return List(cast(s)) +} + +// UnsortedList returns the slice with contents in random order. +func (s Int64) UnsortedList() []int64 { + return cast(s).UnsortedList() +} + +// PopAny returns a single element from the set. +func (s Int64) PopAny() (int64, bool) { + return cast(s).PopAny() +} + +// Len returns the size of the set. +func (s Int64) Len() int { + return len(s) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/set.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/set.go new file mode 100644 index 0000000000..cd961c8c59 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/set.go @@ -0,0 +1,236 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +import ( + "cmp" + "sort" +) + +// Set is a set of the same type elements, implemented via map[comparable]struct{} for minimal memory consumption. +type Set[T comparable] map[T]Empty + +// cast transforms specified set to generic Set[T]. +func cast[T comparable](s map[T]Empty) Set[T] { return s } + +// New creates a Set from a list of values. +// NOTE: type param must be explicitly instantiated if given items are empty. +func New[T comparable](items ...T) Set[T] { + ss := make(Set[T], len(items)) + ss.Insert(items...) + return ss +} + +// KeySet creates a Set from a keys of a map[comparable](? extends interface{}). +// If the value passed in is not actually a map, this will panic. +func KeySet[T comparable, V any](theMap map[T]V) Set[T] { + ret := make(Set[T], len(theMap)) + for keyValue := range theMap { + ret.Insert(keyValue) + } + return ret +} + +// Insert adds items to the set. +func (s Set[T]) Insert(items ...T) Set[T] { + for _, item := range items { + s[item] = Empty{} + } + return s +} + +func Insert[T comparable](set Set[T], items ...T) Set[T] { + return set.Insert(items...) +} + +// Delete removes all items from the set. +func (s Set[T]) Delete(items ...T) Set[T] { + for _, item := range items { + delete(s, item) + } + return s +} + +// Clear empties the set. +// It is preferable to replace the set with a newly constructed set, +// but not all callers can do that (when there are other references to the map). +func (s Set[T]) Clear() Set[T] { + clear(s) + return s +} + +// Has returns true if and only if item is contained in the set. +func (s Set[T]) Has(item T) bool { + _, contained := s[item] + return contained +} + +// HasAll returns true if and only if all items are contained in the set. +func (s Set[T]) HasAll(items ...T) bool { + for _, item := range items { + if !s.Has(item) { + return false + } + } + return true +} + +// HasAny returns true if any items are contained in the set. +func (s Set[T]) HasAny(items ...T) bool { + for _, item := range items { + if s.Has(item) { + return true + } + } + return false +} + +// Clone returns a new set which is a copy of the current set. +func (s Set[T]) Clone() Set[T] { + result := make(Set[T], len(s)) + for key := range s { + result.Insert(key) + } + return result +} + +// Difference returns a set of objects that are not in s2. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.Difference(s2) = {a3} +// s2.Difference(s1) = {a4, a5} +func (s1 Set[T]) Difference(s2 Set[T]) Set[T] { + result := New[T]() + for key := range s1 { + if !s2.Has(key) { + result.Insert(key) + } + } + return result +} + +// SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.SymmetricDifference(s2) = {a3, a4, a5} +// s2.SymmetricDifference(s1) = {a3, a4, a5} +func (s1 Set[T]) SymmetricDifference(s2 Set[T]) Set[T] { + return s1.Difference(s2).Union(s2.Difference(s1)) +} + +// Union returns a new set which includes items in either s1 or s2. +// For example: +// s1 = {a1, a2} +// s2 = {a3, a4} +// s1.Union(s2) = {a1, a2, a3, a4} +// s2.Union(s1) = {a1, a2, a3, a4} +func (s1 Set[T]) Union(s2 Set[T]) Set[T] { + result := s1.Clone() + for key := range s2 { + result.Insert(key) + } + return result +} + +// Intersection returns a new set which includes the item in BOTH s1 and s2 +// For example: +// s1 = {a1, a2} +// s2 = {a2, a3} +// s1.Intersection(s2) = {a2} +func (s1 Set[T]) Intersection(s2 Set[T]) Set[T] { + var walk, other Set[T] + result := New[T]() + if s1.Len() < s2.Len() { + walk = s1 + other = s2 + } else { + walk = s2 + other = s1 + } + for key := range walk { + if other.Has(key) { + result.Insert(key) + } + } + return result +} + +// IsSuperset returns true if and only if s1 is a superset of s2. +func (s1 Set[T]) IsSuperset(s2 Set[T]) bool { + for item := range s2 { + if !s1.Has(item) { + return false + } + } + return true +} + +// Equal returns true if and only if s1 is equal (as a set) to s2. +// Two sets are equal if their membership is identical. +// (In practice, this means same elements, order doesn't matter) +func (s1 Set[T]) Equal(s2 Set[T]) bool { + return len(s1) == len(s2) && s1.IsSuperset(s2) +} + +type sortableSliceOfGeneric[T cmp.Ordered] []T + +func (g sortableSliceOfGeneric[T]) Len() int { return len(g) } +func (g sortableSliceOfGeneric[T]) Less(i, j int) bool { return less[T](g[i], g[j]) } +func (g sortableSliceOfGeneric[T]) Swap(i, j int) { g[i], g[j] = g[j], g[i] } + +// List returns the contents as a sorted T slice. +// +// This is a separate function and not a method because not all types supported +// by Generic are ordered and only those can be sorted. +func List[T cmp.Ordered](s Set[T]) []T { + res := make(sortableSliceOfGeneric[T], 0, len(s)) + for key := range s { + res = append(res, key) + } + sort.Sort(res) + return res +} + +// UnsortedList returns the slice with contents in random order. +func (s Set[T]) UnsortedList() []T { + res := make([]T, 0, len(s)) + for key := range s { + res = append(res, key) + } + return res +} + +// PopAny returns a single element from the set. +func (s Set[T]) PopAny() (T, bool) { + for key := range s { + s.Delete(key) + return key, true + } + var zeroValue T + return zeroValue, false +} + +// Len returns the size of the set. +func (s Set[T]) Len() int { + return len(s) +} + +func less[T cmp.Ordered](lhs, rhs T) bool { + return lhs < rhs +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/string.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/string.go new file mode 100644 index 0000000000..1dab6d13cc --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/util/sets/string.go @@ -0,0 +1,137 @@ +/* +Copyright 2022 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package sets + +// String is a set of strings, implemented via map[string]struct{} for minimal memory consumption. +// +// Deprecated: use generic Set instead. +// new ways: +// s1 := Set[string]{} +// s2 := New[string]() +type String map[string]Empty + +// NewString creates a String from a list of values. +func NewString(items ...string) String { + return String(New[string](items...)) +} + +// StringKeySet creates a String from a keys of a map[string](? extends interface{}). +// If the value passed in is not actually a map, this will panic. +func StringKeySet[T any](theMap map[string]T) String { + return String(KeySet(theMap)) +} + +// Insert adds items to the set. +func (s String) Insert(items ...string) String { + return String(cast(s).Insert(items...)) +} + +// Delete removes all items from the set. +func (s String) Delete(items ...string) String { + return String(cast(s).Delete(items...)) +} + +// Has returns true if and only if item is contained in the set. +func (s String) Has(item string) bool { + return cast(s).Has(item) +} + +// HasAll returns true if and only if all items are contained in the set. +func (s String) HasAll(items ...string) bool { + return cast(s).HasAll(items...) +} + +// HasAny returns true if any items are contained in the set. +func (s String) HasAny(items ...string) bool { + return cast(s).HasAny(items...) +} + +// Clone returns a new set which is a copy of the current set. +func (s String) Clone() String { + return String(cast(s).Clone()) +} + +// Difference returns a set of objects that are not in s2. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.Difference(s2) = {a3} +// s2.Difference(s1) = {a4, a5} +func (s1 String) Difference(s2 String) String { + return String(cast(s1).Difference(cast(s2))) +} + +// SymmetricDifference returns a set of elements which are in either of the sets, but not in their intersection. +// For example: +// s1 = {a1, a2, a3} +// s2 = {a1, a2, a4, a5} +// s1.SymmetricDifference(s2) = {a3, a4, a5} +// s2.SymmetricDifference(s1) = {a3, a4, a5} +func (s1 String) SymmetricDifference(s2 String) String { + return String(cast(s1).SymmetricDifference(cast(s2))) +} + +// Union returns a new set which includes items in either s1 or s2. +// For example: +// s1 = {a1, a2} +// s2 = {a3, a4} +// s1.Union(s2) = {a1, a2, a3, a4} +// s2.Union(s1) = {a1, a2, a3, a4} +func (s1 String) Union(s2 String) String { + return String(cast(s1).Union(cast(s2))) +} + +// Intersection returns a new set which includes the item in BOTH s1 and s2 +// For example: +// s1 = {a1, a2} +// s2 = {a2, a3} +// s1.Intersection(s2) = {a2} +func (s1 String) Intersection(s2 String) String { + return String(cast(s1).Intersection(cast(s2))) +} + +// IsSuperset returns true if and only if s1 is a superset of s2. +func (s1 String) IsSuperset(s2 String) bool { + return cast(s1).IsSuperset(cast(s2)) +} + +// Equal returns true if and only if s1 is equal (as a set) to s2. +// Two sets are equal if their membership is identical. +// (In practice, this means same elements, order doesn't matter) +func (s1 String) Equal(s2 String) bool { + return cast(s1).Equal(cast(s2)) +} + +// List returns the contents as a sorted string slice. +func (s String) List() []string { + return List(cast(s)) +} + +// UnsortedList returns the slice with contents in random order. +func (s String) UnsortedList() []string { + return cast(s).UnsortedList() +} + +// PopAny returns a single element from the set. +func (s String) PopAny() (string, bool) { + return cast(s).PopAny() +} + +// Len returns the size of the set. +func (s String) Len() int { + return len(s) +} diff --git a/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/version/version.go b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/version/version.go new file mode 100644 index 0000000000..7d6a3309b3 --- /dev/null +++ b/vendor/github.com/openshift-eng/openshift-tests-extension/pkg/version/version.go @@ -0,0 +1,11 @@ +package version + +var ( + // CommitFromGit is a constant representing the source version that + // generated this build. It should be set during build via -ldflags. + CommitFromGit string + // BuildDate in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ') + BuildDate string + // GitTreeState has the state of git tree, either "clean" or "dirty" + GitTreeState string +) diff --git a/vendor/github.com/stoewer/go-strcase/.gitignore b/vendor/github.com/stoewer/go-strcase/.gitignore new file mode 100644 index 0000000000..db5247b944 --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/.gitignore @@ -0,0 +1,17 @@ +# Compiled Object files, Static and Dynamic libs (Shared Objects) +*.o +*.a +*.so + +# Folders +vendor +doc + +# Temporary files +*~ +*.swp + +# Editor and IDE config +.idea +*.iml +.vscode diff --git a/vendor/github.com/stoewer/go-strcase/.golangci.yml b/vendor/github.com/stoewer/go-strcase/.golangci.yml new file mode 100644 index 0000000000..7f98d55c42 --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/.golangci.yml @@ -0,0 +1,26 @@ +run: + deadline: 10m + +linters: + enable: + - dupl + - goconst + - gocyclo + - godox + - gosec + - interfacer + - lll + - maligned + - misspell + - prealloc + - stylecheck + - unconvert + - unparam + - errcheck + - golint + - gofmt + disable: [] + fast: false + +issues: + exclude-use-default: false diff --git a/vendor/github.com/stoewer/go-strcase/LICENSE b/vendor/github.com/stoewer/go-strcase/LICENSE new file mode 100644 index 0000000000..a105a3819a --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2017, Adrian Stoewer + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/vendor/github.com/stoewer/go-strcase/README.md b/vendor/github.com/stoewer/go-strcase/README.md new file mode 100644 index 0000000000..84a640e714 --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/README.md @@ -0,0 +1,50 @@ +[![GH Actions](https://github.com/stoewer/go-strcase/actions/workflows/lint-test.yml/badge.svg?branch=master)](https://github.com/stoewer/go-strcase/actions) +[![codecov](https://codecov.io/github/stoewer/go-strcase/branch/master/graph/badge.svg?token=c0UokYnop5)](https://codecov.io/github/stoewer/go-strcase) +[![GoDoc](https://godoc.org/github.com/stoewer/go-strcase?status.svg)](https://pkg.go.dev/github.com/stoewer/go-strcase) +--- + +Go strcase +========== + +The package `strcase` converts between different kinds of naming formats such as camel case +(`CamelCase`), snake case (`snake_case`) or kebab case (`kebab-case`). +The package is designed to work only with strings consisting of standard ASCII letters. +Unicode is currently not supported. + +Versioning and stability +------------------------ + +Although the master branch is supposed to remain always backward compatible, the repository +contains version tags in order to support vendoring tools. +The tag names follow semantic versioning conventions and have the following format `v1.0.0`. +This package supports Go modules introduced with version 1.11. + +Example +------- + +```go +import "github.com/stoewer/go-strcase" + +var snake = strcase.SnakeCase("CamelCase") +``` + +Dependencies +------------ + +### Build dependencies + +* none + +### Test dependencies + +* `github.com/stretchr/testify` + +Run linters and unit tests +-------------------------- + +To run the static code analysis, linters and tests use the following commands: + +``` +golangci-lint run --config .golangci.yml ./... +go test ./... +``` diff --git a/vendor/github.com/stoewer/go-strcase/camel.go b/vendor/github.com/stoewer/go-strcase/camel.go new file mode 100644 index 0000000000..ff9e66e0ce --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/camel.go @@ -0,0 +1,40 @@ +// Copyright (c) 2017, A. Stoewer +// All rights reserved. + +package strcase + +import ( + "strings" +) + +// UpperCamelCase converts a string into camel case starting with a upper case letter. +func UpperCamelCase(s string) string { + return camelCase(s, true) +} + +// LowerCamelCase converts a string into camel case starting with a lower case letter. +func LowerCamelCase(s string) string { + return camelCase(s, false) +} + +func camelCase(s string, upper bool) string { + s = strings.TrimSpace(s) + buffer := make([]rune, 0, len(s)) + + stringIter(s, func(prev, curr, next rune) { + if !isDelimiter(curr) { + if isDelimiter(prev) || (upper && prev == 0) { + buffer = append(buffer, toUpper(curr)) + } else if isLower(prev) { + buffer = append(buffer, curr) + } else if isUpper(prev) && isUpper(curr) && isLower(next) { + // Assume a case like "R" for "XRequestId" + buffer = append(buffer, curr) + } else { + buffer = append(buffer, toLower(curr)) + } + } + }) + + return string(buffer) +} diff --git a/vendor/github.com/stoewer/go-strcase/doc.go b/vendor/github.com/stoewer/go-strcase/doc.go new file mode 100644 index 0000000000..3e441ca3ef --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/doc.go @@ -0,0 +1,8 @@ +// Copyright (c) 2017, A. Stoewer +// All rights reserved. + +// Package strcase converts between different kinds of naming formats such as camel case +// (CamelCase), snake case (snake_case) or kebab case (kebab-case). The package is designed +// to work only with strings consisting of standard ASCII letters. Unicode is currently not +// supported. +package strcase diff --git a/vendor/github.com/stoewer/go-strcase/helper.go b/vendor/github.com/stoewer/go-strcase/helper.go new file mode 100644 index 0000000000..ecad589143 --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/helper.go @@ -0,0 +1,71 @@ +// Copyright (c) 2017, A. Stoewer +// All rights reserved. + +package strcase + +// isLower checks if a character is lower case. More precisely it evaluates if it is +// in the range of ASCII character 'a' to 'z'. +func isLower(ch rune) bool { + return ch >= 'a' && ch <= 'z' +} + +// toLower converts a character in the range of ASCII characters 'A' to 'Z' to its lower +// case counterpart. Other characters remain the same. +func toLower(ch rune) rune { + if ch >= 'A' && ch <= 'Z' { + return ch + 32 + } + return ch +} + +// isLower checks if a character is upper case. More precisely it evaluates if it is +// in the range of ASCII characters 'A' to 'Z'. +func isUpper(ch rune) bool { + return ch >= 'A' && ch <= 'Z' +} + +// toLower converts a character in the range of ASCII characters 'a' to 'z' to its lower +// case counterpart. Other characters remain the same. +func toUpper(ch rune) rune { + if ch >= 'a' && ch <= 'z' { + return ch - 32 + } + return ch +} + +// isSpace checks if a character is some kind of whitespace. +func isSpace(ch rune) bool { + return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r' +} + +// isDelimiter checks if a character is some kind of whitespace or '_' or '-'. +func isDelimiter(ch rune) bool { + return ch == '-' || ch == '_' || isSpace(ch) +} + +// iterFunc is a callback that is called fro a specific position in a string. Its arguments are the +// rune at the respective string position as well as the previous and the next rune. If curr is at the +// first position of the string prev is zero. If curr is at the end of the string next is zero. +type iterFunc func(prev, curr, next rune) + +// stringIter iterates over a string, invoking the callback for every single rune in the string. +func stringIter(s string, callback iterFunc) { + var prev rune + var curr rune + for _, next := range s { + if curr == 0 { + prev = curr + curr = next + continue + } + + callback(prev, curr, next) + + prev = curr + curr = next + } + + if len(s) > 0 { + callback(prev, curr, 0) + } +} diff --git a/vendor/github.com/stoewer/go-strcase/kebab.go b/vendor/github.com/stoewer/go-strcase/kebab.go new file mode 100644 index 0000000000..e9a6487579 --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/kebab.go @@ -0,0 +1,14 @@ +// Copyright (c) 2017, A. Stoewer +// All rights reserved. + +package strcase + +// KebabCase converts a string into kebab case. +func KebabCase(s string) string { + return delimiterCase(s, '-', false) +} + +// UpperKebabCase converts a string into kebab case with capital letters. +func UpperKebabCase(s string) string { + return delimiterCase(s, '-', true) +} diff --git a/vendor/github.com/stoewer/go-strcase/snake.go b/vendor/github.com/stoewer/go-strcase/snake.go new file mode 100644 index 0000000000..1b216e20cf --- /dev/null +++ b/vendor/github.com/stoewer/go-strcase/snake.go @@ -0,0 +1,58 @@ +// Copyright (c) 2017, A. Stoewer +// All rights reserved. + +package strcase + +import ( + "strings" +) + +// SnakeCase converts a string into snake case. +func SnakeCase(s string) string { + return delimiterCase(s, '_', false) +} + +// UpperSnakeCase converts a string into snake case with capital letters. +func UpperSnakeCase(s string) string { + return delimiterCase(s, '_', true) +} + +// delimiterCase converts a string into snake_case or kebab-case depending on the delimiter passed +// as second argument. When upperCase is true the result will be UPPER_SNAKE_CASE or UPPER-KEBAB-CASE. +func delimiterCase(s string, delimiter rune, upperCase bool) string { + s = strings.TrimSpace(s) + buffer := make([]rune, 0, len(s)+3) + + adjustCase := toLower + if upperCase { + adjustCase = toUpper + } + + var prev rune + var curr rune + for _, next := range s { + if isDelimiter(curr) { + if !isDelimiter(prev) { + buffer = append(buffer, delimiter) + } + } else if isUpper(curr) { + if isLower(prev) || (isUpper(prev) && isLower(next)) { + buffer = append(buffer, delimiter) + } + buffer = append(buffer, adjustCase(curr)) + } else if curr != 0 { + buffer = append(buffer, adjustCase(curr)) + } + prev = curr + curr = next + } + + if len(s) > 0 { + if isUpper(curr) && isLower(prev) && prev != 0 { + buffer = append(buffer, delimiter) + } + buffer = append(buffer, adjustCase(curr)) + } + + return string(buffer) +} diff --git a/vendor/golang.org/x/exp/constraints/constraints.go b/vendor/golang.org/x/exp/constraints/constraints.go new file mode 100644 index 0000000000..2c033dff47 --- /dev/null +++ b/vendor/golang.org/x/exp/constraints/constraints.go @@ -0,0 +1,50 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package constraints defines a set of useful constraints to be used +// with type parameters. +package constraints + +// Signed is a constraint that permits any signed integer type. +// If future releases of Go add new predeclared signed integer types, +// this constraint will be modified to include them. +type Signed interface { + ~int | ~int8 | ~int16 | ~int32 | ~int64 +} + +// Unsigned is a constraint that permits any unsigned integer type. +// If future releases of Go add new predeclared unsigned integer types, +// this constraint will be modified to include them. +type Unsigned interface { + ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr +} + +// Integer is a constraint that permits any integer type. +// If future releases of Go add new predeclared integer types, +// this constraint will be modified to include them. +type Integer interface { + Signed | Unsigned +} + +// Float is a constraint that permits any floating-point type. +// If future releases of Go add new predeclared floating-point types, +// this constraint will be modified to include them. +type Float interface { + ~float32 | ~float64 +} + +// Complex is a constraint that permits any complex numeric type. +// If future releases of Go add new predeclared complex numeric types, +// this constraint will be modified to include them. +type Complex interface { + ~complex64 | ~complex128 +} + +// Ordered is a constraint that permits any ordered type: any type +// that supports the operators < <= >= >. +// If future releases of Go add new ordered types, +// this constraint will be modified to include them. +type Ordered interface { + Integer | Float | ~string +} diff --git a/vendor/golang.org/x/exp/slices/cmp.go b/vendor/golang.org/x/exp/slices/cmp.go new file mode 100644 index 0000000000..fbf1934a06 --- /dev/null +++ b/vendor/golang.org/x/exp/slices/cmp.go @@ -0,0 +1,44 @@ +// Copyright 2023 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package slices + +import "golang.org/x/exp/constraints" + +// min is a version of the predeclared function from the Go 1.21 release. +func min[T constraints.Ordered](a, b T) T { + if a < b || isNaN(a) { + return a + } + return b +} + +// max is a version of the predeclared function from the Go 1.21 release. +func max[T constraints.Ordered](a, b T) T { + if a > b || isNaN(a) { + return a + } + return b +} + +// cmpLess is a copy of cmp.Less from the Go 1.21 release. +func cmpLess[T constraints.Ordered](x, y T) bool { + return (isNaN(x) && !isNaN(y)) || x < y +} + +// cmpCompare is a copy of cmp.Compare from the Go 1.21 release. +func cmpCompare[T constraints.Ordered](x, y T) int { + xNaN := isNaN(x) + yNaN := isNaN(y) + if xNaN && yNaN { + return 0 + } + if xNaN || x < y { + return -1 + } + if yNaN || x > y { + return +1 + } + return 0 +} diff --git a/vendor/golang.org/x/exp/slices/slices.go b/vendor/golang.org/x/exp/slices/slices.go new file mode 100644 index 0000000000..46ceac3439 --- /dev/null +++ b/vendor/golang.org/x/exp/slices/slices.go @@ -0,0 +1,515 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package slices defines various functions useful with slices of any type. +package slices + +import ( + "unsafe" + + "golang.org/x/exp/constraints" +) + +// Equal reports whether two slices are equal: the same length and all +// elements equal. If the lengths are different, Equal returns false. +// Otherwise, the elements are compared in increasing index order, and the +// comparison stops at the first unequal pair. +// Floating point NaNs are not considered equal. +func Equal[S ~[]E, E comparable](s1, s2 S) bool { + if len(s1) != len(s2) { + return false + } + for i := range s1 { + if s1[i] != s2[i] { + return false + } + } + return true +} + +// EqualFunc reports whether two slices are equal using an equality +// function on each pair of elements. If the lengths are different, +// EqualFunc returns false. Otherwise, the elements are compared in +// increasing index order, and the comparison stops at the first index +// for which eq returns false. +func EqualFunc[S1 ~[]E1, S2 ~[]E2, E1, E2 any](s1 S1, s2 S2, eq func(E1, E2) bool) bool { + if len(s1) != len(s2) { + return false + } + for i, v1 := range s1 { + v2 := s2[i] + if !eq(v1, v2) { + return false + } + } + return true +} + +// Compare compares the elements of s1 and s2, using [cmp.Compare] on each pair +// of elements. The elements are compared sequentially, starting at index 0, +// until one element is not equal to the other. +// The result of comparing the first non-matching elements is returned. +// If both slices are equal until one of them ends, the shorter slice is +// considered less than the longer one. +// The result is 0 if s1 == s2, -1 if s1 < s2, and +1 if s1 > s2. +func Compare[S ~[]E, E constraints.Ordered](s1, s2 S) int { + for i, v1 := range s1 { + if i >= len(s2) { + return +1 + } + v2 := s2[i] + if c := cmpCompare(v1, v2); c != 0 { + return c + } + } + if len(s1) < len(s2) { + return -1 + } + return 0 +} + +// CompareFunc is like [Compare] but uses a custom comparison function on each +// pair of elements. +// The result is the first non-zero result of cmp; if cmp always +// returns 0 the result is 0 if len(s1) == len(s2), -1 if len(s1) < len(s2), +// and +1 if len(s1) > len(s2). +func CompareFunc[S1 ~[]E1, S2 ~[]E2, E1, E2 any](s1 S1, s2 S2, cmp func(E1, E2) int) int { + for i, v1 := range s1 { + if i >= len(s2) { + return +1 + } + v2 := s2[i] + if c := cmp(v1, v2); c != 0 { + return c + } + } + if len(s1) < len(s2) { + return -1 + } + return 0 +} + +// Index returns the index of the first occurrence of v in s, +// or -1 if not present. +func Index[S ~[]E, E comparable](s S, v E) int { + for i := range s { + if v == s[i] { + return i + } + } + return -1 +} + +// IndexFunc returns the first index i satisfying f(s[i]), +// or -1 if none do. +func IndexFunc[S ~[]E, E any](s S, f func(E) bool) int { + for i := range s { + if f(s[i]) { + return i + } + } + return -1 +} + +// Contains reports whether v is present in s. +func Contains[S ~[]E, E comparable](s S, v E) bool { + return Index(s, v) >= 0 +} + +// ContainsFunc reports whether at least one +// element e of s satisfies f(e). +func ContainsFunc[S ~[]E, E any](s S, f func(E) bool) bool { + return IndexFunc(s, f) >= 0 +} + +// Insert inserts the values v... into s at index i, +// returning the modified slice. +// The elements at s[i:] are shifted up to make room. +// In the returned slice r, r[i] == v[0], +// and r[i+len(v)] == value originally at r[i]. +// Insert panics if i is out of range. +// This function is O(len(s) + len(v)). +func Insert[S ~[]E, E any](s S, i int, v ...E) S { + m := len(v) + if m == 0 { + return s + } + n := len(s) + if i == n { + return append(s, v...) + } + if n+m > cap(s) { + // Use append rather than make so that we bump the size of + // the slice up to the next storage class. + // This is what Grow does but we don't call Grow because + // that might copy the values twice. + s2 := append(s[:i], make(S, n+m-i)...) + copy(s2[i:], v) + copy(s2[i+m:], s[i:]) + return s2 + } + s = s[:n+m] + + // before: + // s: aaaaaaaabbbbccccccccdddd + // ^ ^ ^ ^ + // i i+m n n+m + // after: + // s: aaaaaaaavvvvbbbbcccccccc + // ^ ^ ^ ^ + // i i+m n n+m + // + // a are the values that don't move in s. + // v are the values copied in from v. + // b and c are the values from s that are shifted up in index. + // d are the values that get overwritten, never to be seen again. + + if !overlaps(v, s[i+m:]) { + // Easy case - v does not overlap either the c or d regions. + // (It might be in some of a or b, or elsewhere entirely.) + // The data we copy up doesn't write to v at all, so just do it. + + copy(s[i+m:], s[i:]) + + // Now we have + // s: aaaaaaaabbbbbbbbcccccccc + // ^ ^ ^ ^ + // i i+m n n+m + // Note the b values are duplicated. + + copy(s[i:], v) + + // Now we have + // s: aaaaaaaavvvvbbbbcccccccc + // ^ ^ ^ ^ + // i i+m n n+m + // That's the result we want. + return s + } + + // The hard case - v overlaps c or d. We can't just shift up + // the data because we'd move or clobber the values we're trying + // to insert. + // So instead, write v on top of d, then rotate. + copy(s[n:], v) + + // Now we have + // s: aaaaaaaabbbbccccccccvvvv + // ^ ^ ^ ^ + // i i+m n n+m + + rotateRight(s[i:], m) + + // Now we have + // s: aaaaaaaavvvvbbbbcccccccc + // ^ ^ ^ ^ + // i i+m n n+m + // That's the result we want. + return s +} + +// clearSlice sets all elements up to the length of s to the zero value of E. +// We may use the builtin clear func instead, and remove clearSlice, when upgrading +// to Go 1.21+. +func clearSlice[S ~[]E, E any](s S) { + var zero E + for i := range s { + s[i] = zero + } +} + +// Delete removes the elements s[i:j] from s, returning the modified slice. +// Delete panics if j > len(s) or s[i:j] is not a valid slice of s. +// Delete is O(len(s)-i), so if many items must be deleted, it is better to +// make a single call deleting them all together than to delete one at a time. +// Delete zeroes the elements s[len(s)-(j-i):len(s)]. +func Delete[S ~[]E, E any](s S, i, j int) S { + _ = s[i:j:len(s)] // bounds check + + if i == j { + return s + } + + oldlen := len(s) + s = append(s[:i], s[j:]...) + clearSlice(s[len(s):oldlen]) // zero/nil out the obsolete elements, for GC + return s +} + +// DeleteFunc removes any elements from s for which del returns true, +// returning the modified slice. +// DeleteFunc zeroes the elements between the new length and the original length. +func DeleteFunc[S ~[]E, E any](s S, del func(E) bool) S { + i := IndexFunc(s, del) + if i == -1 { + return s + } + // Don't start copying elements until we find one to delete. + for j := i + 1; j < len(s); j++ { + if v := s[j]; !del(v) { + s[i] = v + i++ + } + } + clearSlice(s[i:]) // zero/nil out the obsolete elements, for GC + return s[:i] +} + +// Replace replaces the elements s[i:j] by the given v, and returns the +// modified slice. Replace panics if s[i:j] is not a valid slice of s. +// When len(v) < (j-i), Replace zeroes the elements between the new length and the original length. +func Replace[S ~[]E, E any](s S, i, j int, v ...E) S { + _ = s[i:j] // verify that i:j is a valid subslice + + if i == j { + return Insert(s, i, v...) + } + if j == len(s) { + return append(s[:i], v...) + } + + tot := len(s[:i]) + len(v) + len(s[j:]) + if tot > cap(s) { + // Too big to fit, allocate and copy over. + s2 := append(s[:i], make(S, tot-i)...) // See Insert + copy(s2[i:], v) + copy(s2[i+len(v):], s[j:]) + return s2 + } + + r := s[:tot] + + if i+len(v) <= j { + // Easy, as v fits in the deleted portion. + copy(r[i:], v) + if i+len(v) != j { + copy(r[i+len(v):], s[j:]) + } + clearSlice(s[tot:]) // zero/nil out the obsolete elements, for GC + return r + } + + // We are expanding (v is bigger than j-i). + // The situation is something like this: + // (example has i=4,j=8,len(s)=16,len(v)=6) + // s: aaaaxxxxbbbbbbbbyy + // ^ ^ ^ ^ + // i j len(s) tot + // a: prefix of s + // x: deleted range + // b: more of s + // y: area to expand into + + if !overlaps(r[i+len(v):], v) { + // Easy, as v is not clobbered by the first copy. + copy(r[i+len(v):], s[j:]) + copy(r[i:], v) + return r + } + + // This is a situation where we don't have a single place to which + // we can copy v. Parts of it need to go to two different places. + // We want to copy the prefix of v into y and the suffix into x, then + // rotate |y| spots to the right. + // + // v[2:] v[:2] + // | | + // s: aaaavvvvbbbbbbbbvv + // ^ ^ ^ ^ + // i j len(s) tot + // + // If either of those two destinations don't alias v, then we're good. + y := len(v) - (j - i) // length of y portion + + if !overlaps(r[i:j], v) { + copy(r[i:j], v[y:]) + copy(r[len(s):], v[:y]) + rotateRight(r[i:], y) + return r + } + if !overlaps(r[len(s):], v) { + copy(r[len(s):], v[:y]) + copy(r[i:j], v[y:]) + rotateRight(r[i:], y) + return r + } + + // Now we know that v overlaps both x and y. + // That means that the entirety of b is *inside* v. + // So we don't need to preserve b at all; instead we + // can copy v first, then copy the b part of v out of + // v to the right destination. + k := startIdx(v, s[j:]) + copy(r[i:], v) + copy(r[i+len(v):], r[i+k:]) + return r +} + +// Clone returns a copy of the slice. +// The elements are copied using assignment, so this is a shallow clone. +func Clone[S ~[]E, E any](s S) S { + // Preserve nil in case it matters. + if s == nil { + return nil + } + return append(S([]E{}), s...) +} + +// Compact replaces consecutive runs of equal elements with a single copy. +// This is like the uniq command found on Unix. +// Compact modifies the contents of the slice s and returns the modified slice, +// which may have a smaller length. +// Compact zeroes the elements between the new length and the original length. +func Compact[S ~[]E, E comparable](s S) S { + if len(s) < 2 { + return s + } + i := 1 + for k := 1; k < len(s); k++ { + if s[k] != s[k-1] { + if i != k { + s[i] = s[k] + } + i++ + } + } + clearSlice(s[i:]) // zero/nil out the obsolete elements, for GC + return s[:i] +} + +// CompactFunc is like [Compact] but uses an equality function to compare elements. +// For runs of elements that compare equal, CompactFunc keeps the first one. +// CompactFunc zeroes the elements between the new length and the original length. +func CompactFunc[S ~[]E, E any](s S, eq func(E, E) bool) S { + if len(s) < 2 { + return s + } + i := 1 + for k := 1; k < len(s); k++ { + if !eq(s[k], s[k-1]) { + if i != k { + s[i] = s[k] + } + i++ + } + } + clearSlice(s[i:]) // zero/nil out the obsolete elements, for GC + return s[:i] +} + +// Grow increases the slice's capacity, if necessary, to guarantee space for +// another n elements. After Grow(n), at least n elements can be appended +// to the slice without another allocation. If n is negative or too large to +// allocate the memory, Grow panics. +func Grow[S ~[]E, E any](s S, n int) S { + if n < 0 { + panic("cannot be negative") + } + if n -= cap(s) - len(s); n > 0 { + // TODO(https://go.dev/issue/53888): Make using []E instead of S + // to workaround a compiler bug where the runtime.growslice optimization + // does not take effect. Revert when the compiler is fixed. + s = append([]E(s)[:cap(s)], make([]E, n)...)[:len(s)] + } + return s +} + +// Clip removes unused capacity from the slice, returning s[:len(s):len(s)]. +func Clip[S ~[]E, E any](s S) S { + return s[:len(s):len(s)] +} + +// Rotation algorithm explanation: +// +// rotate left by 2 +// start with +// 0123456789 +// split up like this +// 01 234567 89 +// swap first 2 and last 2 +// 89 234567 01 +// join first parts +// 89234567 01 +// recursively rotate first left part by 2 +// 23456789 01 +// join at the end +// 2345678901 +// +// rotate left by 8 +// start with +// 0123456789 +// split up like this +// 01 234567 89 +// swap first 2 and last 2 +// 89 234567 01 +// join last parts +// 89 23456701 +// recursively rotate second part left by 6 +// 89 01234567 +// join at the end +// 8901234567 + +// TODO: There are other rotate algorithms. +// This algorithm has the desirable property that it moves each element exactly twice. +// The triple-reverse algorithm is simpler and more cache friendly, but takes more writes. +// The follow-cycles algorithm can be 1-write but it is not very cache friendly. + +// rotateLeft rotates b left by n spaces. +// s_final[i] = s_orig[i+r], wrapping around. +func rotateLeft[E any](s []E, r int) { + for r != 0 && r != len(s) { + if r*2 <= len(s) { + swap(s[:r], s[len(s)-r:]) + s = s[:len(s)-r] + } else { + swap(s[:len(s)-r], s[r:]) + s, r = s[len(s)-r:], r*2-len(s) + } + } +} +func rotateRight[E any](s []E, r int) { + rotateLeft(s, len(s)-r) +} + +// swap swaps the contents of x and y. x and y must be equal length and disjoint. +func swap[E any](x, y []E) { + for i := 0; i < len(x); i++ { + x[i], y[i] = y[i], x[i] + } +} + +// overlaps reports whether the memory ranges a[0:len(a)] and b[0:len(b)] overlap. +func overlaps[E any](a, b []E) bool { + if len(a) == 0 || len(b) == 0 { + return false + } + elemSize := unsafe.Sizeof(a[0]) + if elemSize == 0 { + return false + } + // TODO: use a runtime/unsafe facility once one becomes available. See issue 12445. + // Also see crypto/internal/alias/alias.go:AnyOverlap + return uintptr(unsafe.Pointer(&a[0])) <= uintptr(unsafe.Pointer(&b[len(b)-1]))+(elemSize-1) && + uintptr(unsafe.Pointer(&b[0])) <= uintptr(unsafe.Pointer(&a[len(a)-1]))+(elemSize-1) +} + +// startIdx returns the index in haystack where the needle starts. +// prerequisite: the needle must be aliased entirely inside the haystack. +func startIdx[E any](haystack, needle []E) int { + p := &needle[0] + for i := range haystack { + if p == &haystack[i] { + return i + } + } + // TODO: what if the overlap is by a non-integral number of Es? + panic("needle not found") +} + +// Reverse reverses the elements of the slice in place. +func Reverse[S ~[]E, E any](s S) { + for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 { + s[i], s[j] = s[j], s[i] + } +} diff --git a/vendor/golang.org/x/exp/slices/sort.go b/vendor/golang.org/x/exp/slices/sort.go new file mode 100644 index 0000000000..f58bbc7ba4 --- /dev/null +++ b/vendor/golang.org/x/exp/slices/sort.go @@ -0,0 +1,197 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:generate go run $GOROOT/src/sort/gen_sort_variants.go -exp + +package slices + +import ( + "math/bits" + + "golang.org/x/exp/constraints" +) + +// Sort sorts a slice of any ordered type in ascending order. +// When sorting floating-point numbers, NaNs are ordered before other values. +func Sort[S ~[]E, E constraints.Ordered](x S) { + n := len(x) + pdqsortOrdered(x, 0, n, bits.Len(uint(n))) +} + +// SortFunc sorts the slice x in ascending order as determined by the cmp +// function. This sort is not guaranteed to be stable. +// cmp(a, b) should return a negative number when a < b, a positive number when +// a > b and zero when a == b or when a is not comparable to b in the sense +// of the formal definition of Strict Weak Ordering. +// +// SortFunc requires that cmp is a strict weak ordering. +// See https://en.wikipedia.org/wiki/Weak_ordering#Strict_weak_orderings. +// To indicate 'uncomparable', return 0 from the function. +func SortFunc[S ~[]E, E any](x S, cmp func(a, b E) int) { + n := len(x) + pdqsortCmpFunc(x, 0, n, bits.Len(uint(n)), cmp) +} + +// SortStableFunc sorts the slice x while keeping the original order of equal +// elements, using cmp to compare elements in the same way as [SortFunc]. +func SortStableFunc[S ~[]E, E any](x S, cmp func(a, b E) int) { + stableCmpFunc(x, len(x), cmp) +} + +// IsSorted reports whether x is sorted in ascending order. +func IsSorted[S ~[]E, E constraints.Ordered](x S) bool { + for i := len(x) - 1; i > 0; i-- { + if cmpLess(x[i], x[i-1]) { + return false + } + } + return true +} + +// IsSortedFunc reports whether x is sorted in ascending order, with cmp as the +// comparison function as defined by [SortFunc]. +func IsSortedFunc[S ~[]E, E any](x S, cmp func(a, b E) int) bool { + for i := len(x) - 1; i > 0; i-- { + if cmp(x[i], x[i-1]) < 0 { + return false + } + } + return true +} + +// Min returns the minimal value in x. It panics if x is empty. +// For floating-point numbers, Min propagates NaNs (any NaN value in x +// forces the output to be NaN). +func Min[S ~[]E, E constraints.Ordered](x S) E { + if len(x) < 1 { + panic("slices.Min: empty list") + } + m := x[0] + for i := 1; i < len(x); i++ { + m = min(m, x[i]) + } + return m +} + +// MinFunc returns the minimal value in x, using cmp to compare elements. +// It panics if x is empty. If there is more than one minimal element +// according to the cmp function, MinFunc returns the first one. +func MinFunc[S ~[]E, E any](x S, cmp func(a, b E) int) E { + if len(x) < 1 { + panic("slices.MinFunc: empty list") + } + m := x[0] + for i := 1; i < len(x); i++ { + if cmp(x[i], m) < 0 { + m = x[i] + } + } + return m +} + +// Max returns the maximal value in x. It panics if x is empty. +// For floating-point E, Max propagates NaNs (any NaN value in x +// forces the output to be NaN). +func Max[S ~[]E, E constraints.Ordered](x S) E { + if len(x) < 1 { + panic("slices.Max: empty list") + } + m := x[0] + for i := 1; i < len(x); i++ { + m = max(m, x[i]) + } + return m +} + +// MaxFunc returns the maximal value in x, using cmp to compare elements. +// It panics if x is empty. If there is more than one maximal element +// according to the cmp function, MaxFunc returns the first one. +func MaxFunc[S ~[]E, E any](x S, cmp func(a, b E) int) E { + if len(x) < 1 { + panic("slices.MaxFunc: empty list") + } + m := x[0] + for i := 1; i < len(x); i++ { + if cmp(x[i], m) > 0 { + m = x[i] + } + } + return m +} + +// BinarySearch searches for target in a sorted slice and returns the position +// where target is found, or the position where target would appear in the +// sort order; it also returns a bool saying whether the target is really found +// in the slice. The slice must be sorted in increasing order. +func BinarySearch[S ~[]E, E constraints.Ordered](x S, target E) (int, bool) { + // Inlining is faster than calling BinarySearchFunc with a lambda. + n := len(x) + // Define x[-1] < target and x[n] >= target. + // Invariant: x[i-1] < target, x[j] >= target. + i, j := 0, n + for i < j { + h := int(uint(i+j) >> 1) // avoid overflow when computing h + // i ≤ h < j + if cmpLess(x[h], target) { + i = h + 1 // preserves x[i-1] < target + } else { + j = h // preserves x[j] >= target + } + } + // i == j, x[i-1] < target, and x[j] (= x[i]) >= target => answer is i. + return i, i < n && (x[i] == target || (isNaN(x[i]) && isNaN(target))) +} + +// BinarySearchFunc works like [BinarySearch], but uses a custom comparison +// function. The slice must be sorted in increasing order, where "increasing" +// is defined by cmp. cmp should return 0 if the slice element matches +// the target, a negative number if the slice element precedes the target, +// or a positive number if the slice element follows the target. +// cmp must implement the same ordering as the slice, such that if +// cmp(a, t) < 0 and cmp(b, t) >= 0, then a must precede b in the slice. +func BinarySearchFunc[S ~[]E, E, T any](x S, target T, cmp func(E, T) int) (int, bool) { + n := len(x) + // Define cmp(x[-1], target) < 0 and cmp(x[n], target) >= 0 . + // Invariant: cmp(x[i - 1], target) < 0, cmp(x[j], target) >= 0. + i, j := 0, n + for i < j { + h := int(uint(i+j) >> 1) // avoid overflow when computing h + // i ≤ h < j + if cmp(x[h], target) < 0 { + i = h + 1 // preserves cmp(x[i - 1], target) < 0 + } else { + j = h // preserves cmp(x[j], target) >= 0 + } + } + // i == j, cmp(x[i-1], target) < 0, and cmp(x[j], target) (= cmp(x[i], target)) >= 0 => answer is i. + return i, i < n && cmp(x[i], target) == 0 +} + +type sortedHint int // hint for pdqsort when choosing the pivot + +const ( + unknownHint sortedHint = iota + increasingHint + decreasingHint +) + +// xorshift paper: https://www.jstatsoft.org/article/view/v008i14/xorshift.pdf +type xorshift uint64 + +func (r *xorshift) Next() uint64 { + *r ^= *r << 13 + *r ^= *r >> 17 + *r ^= *r << 5 + return uint64(*r) +} + +func nextPowerOfTwo(length int) uint { + return 1 << bits.Len(uint(length)) +} + +// isNaN reports whether x is a NaN without requiring the math package. +// This will always return false if T is not floating-point. +func isNaN[T constraints.Ordered](x T) bool { + return x != x +} diff --git a/vendor/golang.org/x/exp/slices/zsortanyfunc.go b/vendor/golang.org/x/exp/slices/zsortanyfunc.go new file mode 100644 index 0000000000..06f2c7a248 --- /dev/null +++ b/vendor/golang.org/x/exp/slices/zsortanyfunc.go @@ -0,0 +1,479 @@ +// Code generated by gen_sort_variants.go; DO NOT EDIT. + +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package slices + +// insertionSortCmpFunc sorts data[a:b] using insertion sort. +func insertionSortCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { + for i := a + 1; i < b; i++ { + for j := i; j > a && (cmp(data[j], data[j-1]) < 0); j-- { + data[j], data[j-1] = data[j-1], data[j] + } + } +} + +// siftDownCmpFunc implements the heap property on data[lo:hi]. +// first is an offset into the array where the root of the heap lies. +func siftDownCmpFunc[E any](data []E, lo, hi, first int, cmp func(a, b E) int) { + root := lo + for { + child := 2*root + 1 + if child >= hi { + break + } + if child+1 < hi && (cmp(data[first+child], data[first+child+1]) < 0) { + child++ + } + if !(cmp(data[first+root], data[first+child]) < 0) { + return + } + data[first+root], data[first+child] = data[first+child], data[first+root] + root = child + } +} + +func heapSortCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { + first := a + lo := 0 + hi := b - a + + // Build heap with greatest element at top. + for i := (hi - 1) / 2; i >= 0; i-- { + siftDownCmpFunc(data, i, hi, first, cmp) + } + + // Pop elements, largest first, into end of data. + for i := hi - 1; i >= 0; i-- { + data[first], data[first+i] = data[first+i], data[first] + siftDownCmpFunc(data, lo, i, first, cmp) + } +} + +// pdqsortCmpFunc sorts data[a:b]. +// The algorithm based on pattern-defeating quicksort(pdqsort), but without the optimizations from BlockQuicksort. +// pdqsort paper: https://arxiv.org/pdf/2106.05123.pdf +// C++ implementation: https://github.com/orlp/pdqsort +// Rust implementation: https://docs.rs/pdqsort/latest/pdqsort/ +// limit is the number of allowed bad (very unbalanced) pivots before falling back to heapsort. +func pdqsortCmpFunc[E any](data []E, a, b, limit int, cmp func(a, b E) int) { + const maxInsertion = 12 + + var ( + wasBalanced = true // whether the last partitioning was reasonably balanced + wasPartitioned = true // whether the slice was already partitioned + ) + + for { + length := b - a + + if length <= maxInsertion { + insertionSortCmpFunc(data, a, b, cmp) + return + } + + // Fall back to heapsort if too many bad choices were made. + if limit == 0 { + heapSortCmpFunc(data, a, b, cmp) + return + } + + // If the last partitioning was imbalanced, we need to breaking patterns. + if !wasBalanced { + breakPatternsCmpFunc(data, a, b, cmp) + limit-- + } + + pivot, hint := choosePivotCmpFunc(data, a, b, cmp) + if hint == decreasingHint { + reverseRangeCmpFunc(data, a, b, cmp) + // The chosen pivot was pivot-a elements after the start of the array. + // After reversing it is pivot-a elements before the end of the array. + // The idea came from Rust's implementation. + pivot = (b - 1) - (pivot - a) + hint = increasingHint + } + + // The slice is likely already sorted. + if wasBalanced && wasPartitioned && hint == increasingHint { + if partialInsertionSortCmpFunc(data, a, b, cmp) { + return + } + } + + // Probably the slice contains many duplicate elements, partition the slice into + // elements equal to and elements greater than the pivot. + if a > 0 && !(cmp(data[a-1], data[pivot]) < 0) { + mid := partitionEqualCmpFunc(data, a, b, pivot, cmp) + a = mid + continue + } + + mid, alreadyPartitioned := partitionCmpFunc(data, a, b, pivot, cmp) + wasPartitioned = alreadyPartitioned + + leftLen, rightLen := mid-a, b-mid + balanceThreshold := length / 8 + if leftLen < rightLen { + wasBalanced = leftLen >= balanceThreshold + pdqsortCmpFunc(data, a, mid, limit, cmp) + a = mid + 1 + } else { + wasBalanced = rightLen >= balanceThreshold + pdqsortCmpFunc(data, mid+1, b, limit, cmp) + b = mid + } + } +} + +// partitionCmpFunc does one quicksort partition. +// Let p = data[pivot] +// Moves elements in data[a:b] around, so that data[i]

=p for inewpivot. +// On return, data[newpivot] = p +func partitionCmpFunc[E any](data []E, a, b, pivot int, cmp func(a, b E) int) (newpivot int, alreadyPartitioned bool) { + data[a], data[pivot] = data[pivot], data[a] + i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned + + for i <= j && (cmp(data[i], data[a]) < 0) { + i++ + } + for i <= j && !(cmp(data[j], data[a]) < 0) { + j-- + } + if i > j { + data[j], data[a] = data[a], data[j] + return j, true + } + data[i], data[j] = data[j], data[i] + i++ + j-- + + for { + for i <= j && (cmp(data[i], data[a]) < 0) { + i++ + } + for i <= j && !(cmp(data[j], data[a]) < 0) { + j-- + } + if i > j { + break + } + data[i], data[j] = data[j], data[i] + i++ + j-- + } + data[j], data[a] = data[a], data[j] + return j, false +} + +// partitionEqualCmpFunc partitions data[a:b] into elements equal to data[pivot] followed by elements greater than data[pivot]. +// It assumed that data[a:b] does not contain elements smaller than the data[pivot]. +func partitionEqualCmpFunc[E any](data []E, a, b, pivot int, cmp func(a, b E) int) (newpivot int) { + data[a], data[pivot] = data[pivot], data[a] + i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned + + for { + for i <= j && !(cmp(data[a], data[i]) < 0) { + i++ + } + for i <= j && (cmp(data[a], data[j]) < 0) { + j-- + } + if i > j { + break + } + data[i], data[j] = data[j], data[i] + i++ + j-- + } + return i +} + +// partialInsertionSortCmpFunc partially sorts a slice, returns true if the slice is sorted at the end. +func partialInsertionSortCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) bool { + const ( + maxSteps = 5 // maximum number of adjacent out-of-order pairs that will get shifted + shortestShifting = 50 // don't shift any elements on short arrays + ) + i := a + 1 + for j := 0; j < maxSteps; j++ { + for i < b && !(cmp(data[i], data[i-1]) < 0) { + i++ + } + + if i == b { + return true + } + + if b-a < shortestShifting { + return false + } + + data[i], data[i-1] = data[i-1], data[i] + + // Shift the smaller one to the left. + if i-a >= 2 { + for j := i - 1; j >= 1; j-- { + if !(cmp(data[j], data[j-1]) < 0) { + break + } + data[j], data[j-1] = data[j-1], data[j] + } + } + // Shift the greater one to the right. + if b-i >= 2 { + for j := i + 1; j < b; j++ { + if !(cmp(data[j], data[j-1]) < 0) { + break + } + data[j], data[j-1] = data[j-1], data[j] + } + } + } + return false +} + +// breakPatternsCmpFunc scatters some elements around in an attempt to break some patterns +// that might cause imbalanced partitions in quicksort. +func breakPatternsCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { + length := b - a + if length >= 8 { + random := xorshift(length) + modulus := nextPowerOfTwo(length) + + for idx := a + (length/4)*2 - 1; idx <= a+(length/4)*2+1; idx++ { + other := int(uint(random.Next()) & (modulus - 1)) + if other >= length { + other -= length + } + data[idx], data[a+other] = data[a+other], data[idx] + } + } +} + +// choosePivotCmpFunc chooses a pivot in data[a:b]. +// +// [0,8): chooses a static pivot. +// [8,shortestNinther): uses the simple median-of-three method. +// [shortestNinther,∞): uses the Tukey ninther method. +func choosePivotCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) (pivot int, hint sortedHint) { + const ( + shortestNinther = 50 + maxSwaps = 4 * 3 + ) + + l := b - a + + var ( + swaps int + i = a + l/4*1 + j = a + l/4*2 + k = a + l/4*3 + ) + + if l >= 8 { + if l >= shortestNinther { + // Tukey ninther method, the idea came from Rust's implementation. + i = medianAdjacentCmpFunc(data, i, &swaps, cmp) + j = medianAdjacentCmpFunc(data, j, &swaps, cmp) + k = medianAdjacentCmpFunc(data, k, &swaps, cmp) + } + // Find the median among i, j, k and stores it into j. + j = medianCmpFunc(data, i, j, k, &swaps, cmp) + } + + switch swaps { + case 0: + return j, increasingHint + case maxSwaps: + return j, decreasingHint + default: + return j, unknownHint + } +} + +// order2CmpFunc returns x,y where data[x] <= data[y], where x,y=a,b or x,y=b,a. +func order2CmpFunc[E any](data []E, a, b int, swaps *int, cmp func(a, b E) int) (int, int) { + if cmp(data[b], data[a]) < 0 { + *swaps++ + return b, a + } + return a, b +} + +// medianCmpFunc returns x where data[x] is the median of data[a],data[b],data[c], where x is a, b, or c. +func medianCmpFunc[E any](data []E, a, b, c int, swaps *int, cmp func(a, b E) int) int { + a, b = order2CmpFunc(data, a, b, swaps, cmp) + b, c = order2CmpFunc(data, b, c, swaps, cmp) + a, b = order2CmpFunc(data, a, b, swaps, cmp) + return b +} + +// medianAdjacentCmpFunc finds the median of data[a - 1], data[a], data[a + 1] and stores the index into a. +func medianAdjacentCmpFunc[E any](data []E, a int, swaps *int, cmp func(a, b E) int) int { + return medianCmpFunc(data, a-1, a, a+1, swaps, cmp) +} + +func reverseRangeCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { + i := a + j := b - 1 + for i < j { + data[i], data[j] = data[j], data[i] + i++ + j-- + } +} + +func swapRangeCmpFunc[E any](data []E, a, b, n int, cmp func(a, b E) int) { + for i := 0; i < n; i++ { + data[a+i], data[b+i] = data[b+i], data[a+i] + } +} + +func stableCmpFunc[E any](data []E, n int, cmp func(a, b E) int) { + blockSize := 20 // must be > 0 + a, b := 0, blockSize + for b <= n { + insertionSortCmpFunc(data, a, b, cmp) + a = b + b += blockSize + } + insertionSortCmpFunc(data, a, n, cmp) + + for blockSize < n { + a, b = 0, 2*blockSize + for b <= n { + symMergeCmpFunc(data, a, a+blockSize, b, cmp) + a = b + b += 2 * blockSize + } + if m := a + blockSize; m < n { + symMergeCmpFunc(data, a, m, n, cmp) + } + blockSize *= 2 + } +} + +// symMergeCmpFunc merges the two sorted subsequences data[a:m] and data[m:b] using +// the SymMerge algorithm from Pok-Son Kim and Arne Kutzner, "Stable Minimum +// Storage Merging by Symmetric Comparisons", in Susanne Albers and Tomasz +// Radzik, editors, Algorithms - ESA 2004, volume 3221 of Lecture Notes in +// Computer Science, pages 714-723. Springer, 2004. +// +// Let M = m-a and N = b-n. Wolog M < N. +// The recursion depth is bound by ceil(log(N+M)). +// The algorithm needs O(M*log(N/M + 1)) calls to data.Less. +// The algorithm needs O((M+N)*log(M)) calls to data.Swap. +// +// The paper gives O((M+N)*log(M)) as the number of assignments assuming a +// rotation algorithm which uses O(M+N+gcd(M+N)) assignments. The argumentation +// in the paper carries through for Swap operations, especially as the block +// swapping rotate uses only O(M+N) Swaps. +// +// symMerge assumes non-degenerate arguments: a < m && m < b. +// Having the caller check this condition eliminates many leaf recursion calls, +// which improves performance. +func symMergeCmpFunc[E any](data []E, a, m, b int, cmp func(a, b E) int) { + // Avoid unnecessary recursions of symMerge + // by direct insertion of data[a] into data[m:b] + // if data[a:m] only contains one element. + if m-a == 1 { + // Use binary search to find the lowest index i + // such that data[i] >= data[a] for m <= i < b. + // Exit the search loop with i == b in case no such index exists. + i := m + j := b + for i < j { + h := int(uint(i+j) >> 1) + if cmp(data[h], data[a]) < 0 { + i = h + 1 + } else { + j = h + } + } + // Swap values until data[a] reaches the position before i. + for k := a; k < i-1; k++ { + data[k], data[k+1] = data[k+1], data[k] + } + return + } + + // Avoid unnecessary recursions of symMerge + // by direct insertion of data[m] into data[a:m] + // if data[m:b] only contains one element. + if b-m == 1 { + // Use binary search to find the lowest index i + // such that data[i] > data[m] for a <= i < m. + // Exit the search loop with i == m in case no such index exists. + i := a + j := m + for i < j { + h := int(uint(i+j) >> 1) + if !(cmp(data[m], data[h]) < 0) { + i = h + 1 + } else { + j = h + } + } + // Swap values until data[m] reaches the position i. + for k := m; k > i; k-- { + data[k], data[k-1] = data[k-1], data[k] + } + return + } + + mid := int(uint(a+b) >> 1) + n := mid + m + var start, r int + if m > mid { + start = n - b + r = mid + } else { + start = a + r = m + } + p := n - 1 + + for start < r { + c := int(uint(start+r) >> 1) + if !(cmp(data[p-c], data[c]) < 0) { + start = c + 1 + } else { + r = c + } + } + + end := n - start + if start < m && m < end { + rotateCmpFunc(data, start, m, end, cmp) + } + if a < start && start < mid { + symMergeCmpFunc(data, a, start, mid, cmp) + } + if mid < end && end < b { + symMergeCmpFunc(data, mid, end, b, cmp) + } +} + +// rotateCmpFunc rotates two consecutive blocks u = data[a:m] and v = data[m:b] in data: +// Data of the form 'x u v y' is changed to 'x v u y'. +// rotate performs at most b-a many calls to data.Swap, +// and it assumes non-degenerate arguments: a < m && m < b. +func rotateCmpFunc[E any](data []E, a, m, b int, cmp func(a, b E) int) { + i := m - a + j := b - m + + for i != j { + if i > j { + swapRangeCmpFunc(data, m-i, m, j, cmp) + i -= j + } else { + swapRangeCmpFunc(data, m-i, m+j-i, i, cmp) + j -= i + } + } + // i == j + swapRangeCmpFunc(data, m-i, m, i, cmp) +} diff --git a/vendor/golang.org/x/exp/slices/zsortordered.go b/vendor/golang.org/x/exp/slices/zsortordered.go new file mode 100644 index 0000000000..99b47c3986 --- /dev/null +++ b/vendor/golang.org/x/exp/slices/zsortordered.go @@ -0,0 +1,481 @@ +// Code generated by gen_sort_variants.go; DO NOT EDIT. + +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package slices + +import "golang.org/x/exp/constraints" + +// insertionSortOrdered sorts data[a:b] using insertion sort. +func insertionSortOrdered[E constraints.Ordered](data []E, a, b int) { + for i := a + 1; i < b; i++ { + for j := i; j > a && cmpLess(data[j], data[j-1]); j-- { + data[j], data[j-1] = data[j-1], data[j] + } + } +} + +// siftDownOrdered implements the heap property on data[lo:hi]. +// first is an offset into the array where the root of the heap lies. +func siftDownOrdered[E constraints.Ordered](data []E, lo, hi, first int) { + root := lo + for { + child := 2*root + 1 + if child >= hi { + break + } + if child+1 < hi && cmpLess(data[first+child], data[first+child+1]) { + child++ + } + if !cmpLess(data[first+root], data[first+child]) { + return + } + data[first+root], data[first+child] = data[first+child], data[first+root] + root = child + } +} + +func heapSortOrdered[E constraints.Ordered](data []E, a, b int) { + first := a + lo := 0 + hi := b - a + + // Build heap with greatest element at top. + for i := (hi - 1) / 2; i >= 0; i-- { + siftDownOrdered(data, i, hi, first) + } + + // Pop elements, largest first, into end of data. + for i := hi - 1; i >= 0; i-- { + data[first], data[first+i] = data[first+i], data[first] + siftDownOrdered(data, lo, i, first) + } +} + +// pdqsortOrdered sorts data[a:b]. +// The algorithm based on pattern-defeating quicksort(pdqsort), but without the optimizations from BlockQuicksort. +// pdqsort paper: https://arxiv.org/pdf/2106.05123.pdf +// C++ implementation: https://github.com/orlp/pdqsort +// Rust implementation: https://docs.rs/pdqsort/latest/pdqsort/ +// limit is the number of allowed bad (very unbalanced) pivots before falling back to heapsort. +func pdqsortOrdered[E constraints.Ordered](data []E, a, b, limit int) { + const maxInsertion = 12 + + var ( + wasBalanced = true // whether the last partitioning was reasonably balanced + wasPartitioned = true // whether the slice was already partitioned + ) + + for { + length := b - a + + if length <= maxInsertion { + insertionSortOrdered(data, a, b) + return + } + + // Fall back to heapsort if too many bad choices were made. + if limit == 0 { + heapSortOrdered(data, a, b) + return + } + + // If the last partitioning was imbalanced, we need to breaking patterns. + if !wasBalanced { + breakPatternsOrdered(data, a, b) + limit-- + } + + pivot, hint := choosePivotOrdered(data, a, b) + if hint == decreasingHint { + reverseRangeOrdered(data, a, b) + // The chosen pivot was pivot-a elements after the start of the array. + // After reversing it is pivot-a elements before the end of the array. + // The idea came from Rust's implementation. + pivot = (b - 1) - (pivot - a) + hint = increasingHint + } + + // The slice is likely already sorted. + if wasBalanced && wasPartitioned && hint == increasingHint { + if partialInsertionSortOrdered(data, a, b) { + return + } + } + + // Probably the slice contains many duplicate elements, partition the slice into + // elements equal to and elements greater than the pivot. + if a > 0 && !cmpLess(data[a-1], data[pivot]) { + mid := partitionEqualOrdered(data, a, b, pivot) + a = mid + continue + } + + mid, alreadyPartitioned := partitionOrdered(data, a, b, pivot) + wasPartitioned = alreadyPartitioned + + leftLen, rightLen := mid-a, b-mid + balanceThreshold := length / 8 + if leftLen < rightLen { + wasBalanced = leftLen >= balanceThreshold + pdqsortOrdered(data, a, mid, limit) + a = mid + 1 + } else { + wasBalanced = rightLen >= balanceThreshold + pdqsortOrdered(data, mid+1, b, limit) + b = mid + } + } +} + +// partitionOrdered does one quicksort partition. +// Let p = data[pivot] +// Moves elements in data[a:b] around, so that data[i]

=p for inewpivot. +// On return, data[newpivot] = p +func partitionOrdered[E constraints.Ordered](data []E, a, b, pivot int) (newpivot int, alreadyPartitioned bool) { + data[a], data[pivot] = data[pivot], data[a] + i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned + + for i <= j && cmpLess(data[i], data[a]) { + i++ + } + for i <= j && !cmpLess(data[j], data[a]) { + j-- + } + if i > j { + data[j], data[a] = data[a], data[j] + return j, true + } + data[i], data[j] = data[j], data[i] + i++ + j-- + + for { + for i <= j && cmpLess(data[i], data[a]) { + i++ + } + for i <= j && !cmpLess(data[j], data[a]) { + j-- + } + if i > j { + break + } + data[i], data[j] = data[j], data[i] + i++ + j-- + } + data[j], data[a] = data[a], data[j] + return j, false +} + +// partitionEqualOrdered partitions data[a:b] into elements equal to data[pivot] followed by elements greater than data[pivot]. +// It assumed that data[a:b] does not contain elements smaller than the data[pivot]. +func partitionEqualOrdered[E constraints.Ordered](data []E, a, b, pivot int) (newpivot int) { + data[a], data[pivot] = data[pivot], data[a] + i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned + + for { + for i <= j && !cmpLess(data[a], data[i]) { + i++ + } + for i <= j && cmpLess(data[a], data[j]) { + j-- + } + if i > j { + break + } + data[i], data[j] = data[j], data[i] + i++ + j-- + } + return i +} + +// partialInsertionSortOrdered partially sorts a slice, returns true if the slice is sorted at the end. +func partialInsertionSortOrdered[E constraints.Ordered](data []E, a, b int) bool { + const ( + maxSteps = 5 // maximum number of adjacent out-of-order pairs that will get shifted + shortestShifting = 50 // don't shift any elements on short arrays + ) + i := a + 1 + for j := 0; j < maxSteps; j++ { + for i < b && !cmpLess(data[i], data[i-1]) { + i++ + } + + if i == b { + return true + } + + if b-a < shortestShifting { + return false + } + + data[i], data[i-1] = data[i-1], data[i] + + // Shift the smaller one to the left. + if i-a >= 2 { + for j := i - 1; j >= 1; j-- { + if !cmpLess(data[j], data[j-1]) { + break + } + data[j], data[j-1] = data[j-1], data[j] + } + } + // Shift the greater one to the right. + if b-i >= 2 { + for j := i + 1; j < b; j++ { + if !cmpLess(data[j], data[j-1]) { + break + } + data[j], data[j-1] = data[j-1], data[j] + } + } + } + return false +} + +// breakPatternsOrdered scatters some elements around in an attempt to break some patterns +// that might cause imbalanced partitions in quicksort. +func breakPatternsOrdered[E constraints.Ordered](data []E, a, b int) { + length := b - a + if length >= 8 { + random := xorshift(length) + modulus := nextPowerOfTwo(length) + + for idx := a + (length/4)*2 - 1; idx <= a+(length/4)*2+1; idx++ { + other := int(uint(random.Next()) & (modulus - 1)) + if other >= length { + other -= length + } + data[idx], data[a+other] = data[a+other], data[idx] + } + } +} + +// choosePivotOrdered chooses a pivot in data[a:b]. +// +// [0,8): chooses a static pivot. +// [8,shortestNinther): uses the simple median-of-three method. +// [shortestNinther,∞): uses the Tukey ninther method. +func choosePivotOrdered[E constraints.Ordered](data []E, a, b int) (pivot int, hint sortedHint) { + const ( + shortestNinther = 50 + maxSwaps = 4 * 3 + ) + + l := b - a + + var ( + swaps int + i = a + l/4*1 + j = a + l/4*2 + k = a + l/4*3 + ) + + if l >= 8 { + if l >= shortestNinther { + // Tukey ninther method, the idea came from Rust's implementation. + i = medianAdjacentOrdered(data, i, &swaps) + j = medianAdjacentOrdered(data, j, &swaps) + k = medianAdjacentOrdered(data, k, &swaps) + } + // Find the median among i, j, k and stores it into j. + j = medianOrdered(data, i, j, k, &swaps) + } + + switch swaps { + case 0: + return j, increasingHint + case maxSwaps: + return j, decreasingHint + default: + return j, unknownHint + } +} + +// order2Ordered returns x,y where data[x] <= data[y], where x,y=a,b or x,y=b,a. +func order2Ordered[E constraints.Ordered](data []E, a, b int, swaps *int) (int, int) { + if cmpLess(data[b], data[a]) { + *swaps++ + return b, a + } + return a, b +} + +// medianOrdered returns x where data[x] is the median of data[a],data[b],data[c], where x is a, b, or c. +func medianOrdered[E constraints.Ordered](data []E, a, b, c int, swaps *int) int { + a, b = order2Ordered(data, a, b, swaps) + b, c = order2Ordered(data, b, c, swaps) + a, b = order2Ordered(data, a, b, swaps) + return b +} + +// medianAdjacentOrdered finds the median of data[a - 1], data[a], data[a + 1] and stores the index into a. +func medianAdjacentOrdered[E constraints.Ordered](data []E, a int, swaps *int) int { + return medianOrdered(data, a-1, a, a+1, swaps) +} + +func reverseRangeOrdered[E constraints.Ordered](data []E, a, b int) { + i := a + j := b - 1 + for i < j { + data[i], data[j] = data[j], data[i] + i++ + j-- + } +} + +func swapRangeOrdered[E constraints.Ordered](data []E, a, b, n int) { + for i := 0; i < n; i++ { + data[a+i], data[b+i] = data[b+i], data[a+i] + } +} + +func stableOrdered[E constraints.Ordered](data []E, n int) { + blockSize := 20 // must be > 0 + a, b := 0, blockSize + for b <= n { + insertionSortOrdered(data, a, b) + a = b + b += blockSize + } + insertionSortOrdered(data, a, n) + + for blockSize < n { + a, b = 0, 2*blockSize + for b <= n { + symMergeOrdered(data, a, a+blockSize, b) + a = b + b += 2 * blockSize + } + if m := a + blockSize; m < n { + symMergeOrdered(data, a, m, n) + } + blockSize *= 2 + } +} + +// symMergeOrdered merges the two sorted subsequences data[a:m] and data[m:b] using +// the SymMerge algorithm from Pok-Son Kim and Arne Kutzner, "Stable Minimum +// Storage Merging by Symmetric Comparisons", in Susanne Albers and Tomasz +// Radzik, editors, Algorithms - ESA 2004, volume 3221 of Lecture Notes in +// Computer Science, pages 714-723. Springer, 2004. +// +// Let M = m-a and N = b-n. Wolog M < N. +// The recursion depth is bound by ceil(log(N+M)). +// The algorithm needs O(M*log(N/M + 1)) calls to data.Less. +// The algorithm needs O((M+N)*log(M)) calls to data.Swap. +// +// The paper gives O((M+N)*log(M)) as the number of assignments assuming a +// rotation algorithm which uses O(M+N+gcd(M+N)) assignments. The argumentation +// in the paper carries through for Swap operations, especially as the block +// swapping rotate uses only O(M+N) Swaps. +// +// symMerge assumes non-degenerate arguments: a < m && m < b. +// Having the caller check this condition eliminates many leaf recursion calls, +// which improves performance. +func symMergeOrdered[E constraints.Ordered](data []E, a, m, b int) { + // Avoid unnecessary recursions of symMerge + // by direct insertion of data[a] into data[m:b] + // if data[a:m] only contains one element. + if m-a == 1 { + // Use binary search to find the lowest index i + // such that data[i] >= data[a] for m <= i < b. + // Exit the search loop with i == b in case no such index exists. + i := m + j := b + for i < j { + h := int(uint(i+j) >> 1) + if cmpLess(data[h], data[a]) { + i = h + 1 + } else { + j = h + } + } + // Swap values until data[a] reaches the position before i. + for k := a; k < i-1; k++ { + data[k], data[k+1] = data[k+1], data[k] + } + return + } + + // Avoid unnecessary recursions of symMerge + // by direct insertion of data[m] into data[a:m] + // if data[m:b] only contains one element. + if b-m == 1 { + // Use binary search to find the lowest index i + // such that data[i] > data[m] for a <= i < m. + // Exit the search loop with i == m in case no such index exists. + i := a + j := m + for i < j { + h := int(uint(i+j) >> 1) + if !cmpLess(data[m], data[h]) { + i = h + 1 + } else { + j = h + } + } + // Swap values until data[m] reaches the position i. + for k := m; k > i; k-- { + data[k], data[k-1] = data[k-1], data[k] + } + return + } + + mid := int(uint(a+b) >> 1) + n := mid + m + var start, r int + if m > mid { + start = n - b + r = mid + } else { + start = a + r = m + } + p := n - 1 + + for start < r { + c := int(uint(start+r) >> 1) + if !cmpLess(data[p-c], data[c]) { + start = c + 1 + } else { + r = c + } + } + + end := n - start + if start < m && m < end { + rotateOrdered(data, start, m, end) + } + if a < start && start < mid { + symMergeOrdered(data, a, start, mid) + } + if mid < end && end < b { + symMergeOrdered(data, mid, end, b) + } +} + +// rotateOrdered rotates two consecutive blocks u = data[a:m] and v = data[m:b] in data: +// Data of the form 'x u v y' is changed to 'x v u y'. +// rotate performs at most b-a many calls to data.Swap, +// and it assumes non-degenerate arguments: a < m && m < b. +func rotateOrdered[E constraints.Ordered](data []E, a, m, b int) { + i := m - a + j := b - m + + for i != j { + if i > j { + swapRangeOrdered(data, m-i, m, j) + i -= j + } else { + swapRangeOrdered(data, m-i, m+j-i, i) + j -= i + } + } + // i == j + swapRangeOrdered(data, m-i, m, i) +} diff --git a/vendor/google.golang.org/genproto/googleapis/api/LICENSE b/vendor/google.golang.org/genproto/googleapis/api/LICENSE new file mode 100644 index 0000000000..d645695673 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/api/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/checked.pb.go b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/checked.pb.go new file mode 100644 index 0000000000..9f81dbcd86 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/checked.pb.go @@ -0,0 +1,1664 @@ +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.26.0 +// protoc v4.24.4 +// source: google/api/expr/v1alpha1/checked.proto + +package expr + +import ( + reflect "reflect" + sync "sync" + + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + emptypb "google.golang.org/protobuf/types/known/emptypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// CEL primitive types. +type Type_PrimitiveType int32 + +const ( + // Unspecified type. + Type_PRIMITIVE_TYPE_UNSPECIFIED Type_PrimitiveType = 0 + // Boolean type. + Type_BOOL Type_PrimitiveType = 1 + // Int64 type. + // + // Proto-based integer values are widened to int64. + Type_INT64 Type_PrimitiveType = 2 + // Uint64 type. + // + // Proto-based unsigned integer values are widened to uint64. + Type_UINT64 Type_PrimitiveType = 3 + // Double type. + // + // Proto-based float values are widened to double values. + Type_DOUBLE Type_PrimitiveType = 4 + // String type. + Type_STRING Type_PrimitiveType = 5 + // Bytes type. + Type_BYTES Type_PrimitiveType = 6 +) + +// Enum value maps for Type_PrimitiveType. +var ( + Type_PrimitiveType_name = map[int32]string{ + 0: "PRIMITIVE_TYPE_UNSPECIFIED", + 1: "BOOL", + 2: "INT64", + 3: "UINT64", + 4: "DOUBLE", + 5: "STRING", + 6: "BYTES", + } + Type_PrimitiveType_value = map[string]int32{ + "PRIMITIVE_TYPE_UNSPECIFIED": 0, + "BOOL": 1, + "INT64": 2, + "UINT64": 3, + "DOUBLE": 4, + "STRING": 5, + "BYTES": 6, + } +) + +func (x Type_PrimitiveType) Enum() *Type_PrimitiveType { + p := new(Type_PrimitiveType) + *p = x + return p +} + +func (x Type_PrimitiveType) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (Type_PrimitiveType) Descriptor() protoreflect.EnumDescriptor { + return file_google_api_expr_v1alpha1_checked_proto_enumTypes[0].Descriptor() +} + +func (Type_PrimitiveType) Type() protoreflect.EnumType { + return &file_google_api_expr_v1alpha1_checked_proto_enumTypes[0] +} + +func (x Type_PrimitiveType) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use Type_PrimitiveType.Descriptor instead. +func (Type_PrimitiveType) EnumDescriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1, 0} +} + +// Well-known protobuf types treated with first-class support in CEL. +type Type_WellKnownType int32 + +const ( + // Unspecified type. + Type_WELL_KNOWN_TYPE_UNSPECIFIED Type_WellKnownType = 0 + // Well-known protobuf.Any type. + // + // Any types are a polymorphic message type. During type-checking they are + // treated like `DYN` types, but at runtime they are resolved to a specific + // message type specified at evaluation time. + Type_ANY Type_WellKnownType = 1 + // Well-known protobuf.Timestamp type, internally referenced as `timestamp`. + Type_TIMESTAMP Type_WellKnownType = 2 + // Well-known protobuf.Duration type, internally referenced as `duration`. + Type_DURATION Type_WellKnownType = 3 +) + +// Enum value maps for Type_WellKnownType. +var ( + Type_WellKnownType_name = map[int32]string{ + 0: "WELL_KNOWN_TYPE_UNSPECIFIED", + 1: "ANY", + 2: "TIMESTAMP", + 3: "DURATION", + } + Type_WellKnownType_value = map[string]int32{ + "WELL_KNOWN_TYPE_UNSPECIFIED": 0, + "ANY": 1, + "TIMESTAMP": 2, + "DURATION": 3, + } +) + +func (x Type_WellKnownType) Enum() *Type_WellKnownType { + p := new(Type_WellKnownType) + *p = x + return p +} + +func (x Type_WellKnownType) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (Type_WellKnownType) Descriptor() protoreflect.EnumDescriptor { + return file_google_api_expr_v1alpha1_checked_proto_enumTypes[1].Descriptor() +} + +func (Type_WellKnownType) Type() protoreflect.EnumType { + return &file_google_api_expr_v1alpha1_checked_proto_enumTypes[1] +} + +func (x Type_WellKnownType) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use Type_WellKnownType.Descriptor instead. +func (Type_WellKnownType) EnumDescriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1, 1} +} + +// A CEL expression which has been successfully type checked. +type CheckedExpr struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // A map from expression ids to resolved references. + // + // The following entries are in this table: + // + // - An Ident or Select expression is represented here if it resolves to a + // declaration. For instance, if `a.b.c` is represented by + // `select(select(id(a), b), c)`, and `a.b` resolves to a declaration, + // while `c` is a field selection, then the reference is attached to the + // nested select expression (but not to the id or or the outer select). + // In turn, if `a` resolves to a declaration and `b.c` are field selections, + // the reference is attached to the ident expression. + // - Every Call expression has an entry here, identifying the function being + // called. + // - Every CreateStruct expression for a message has an entry, identifying + // the message. + ReferenceMap map[int64]*Reference `protobuf:"bytes,2,rep,name=reference_map,json=referenceMap,proto3" json:"reference_map,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + // A map from expression ids to types. + // + // Every expression node which has a type different than DYN has a mapping + // here. If an expression has type DYN, it is omitted from this map to save + // space. + TypeMap map[int64]*Type `protobuf:"bytes,3,rep,name=type_map,json=typeMap,proto3" json:"type_map,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + // The source info derived from input that generated the parsed `expr` and + // any optimizations made during the type-checking pass. + SourceInfo *SourceInfo `protobuf:"bytes,5,opt,name=source_info,json=sourceInfo,proto3" json:"source_info,omitempty"` + // The expr version indicates the major / minor version number of the `expr` + // representation. + // + // The most common reason for a version change will be to indicate to the CEL + // runtimes that transformations have been performed on the expr during static + // analysis. In some cases, this will save the runtime the work of applying + // the same or similar transformations prior to evaluation. + ExprVersion string `protobuf:"bytes,6,opt,name=expr_version,json=exprVersion,proto3" json:"expr_version,omitempty"` + // The checked expression. Semantically equivalent to the parsed `expr`, but + // may have structural differences. + Expr *Expr `protobuf:"bytes,4,opt,name=expr,proto3" json:"expr,omitempty"` +} + +func (x *CheckedExpr) Reset() { + *x = CheckedExpr{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *CheckedExpr) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*CheckedExpr) ProtoMessage() {} + +func (x *CheckedExpr) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use CheckedExpr.ProtoReflect.Descriptor instead. +func (*CheckedExpr) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{0} +} + +func (x *CheckedExpr) GetReferenceMap() map[int64]*Reference { + if x != nil { + return x.ReferenceMap + } + return nil +} + +func (x *CheckedExpr) GetTypeMap() map[int64]*Type { + if x != nil { + return x.TypeMap + } + return nil +} + +func (x *CheckedExpr) GetSourceInfo() *SourceInfo { + if x != nil { + return x.SourceInfo + } + return nil +} + +func (x *CheckedExpr) GetExprVersion() string { + if x != nil { + return x.ExprVersion + } + return "" +} + +func (x *CheckedExpr) GetExpr() *Expr { + if x != nil { + return x.Expr + } + return nil +} + +// Represents a CEL type. +type Type struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The kind of type. + // + // Types that are assignable to TypeKind: + // + // *Type_Dyn + // *Type_Null + // *Type_Primitive + // *Type_Wrapper + // *Type_WellKnown + // *Type_ListType_ + // *Type_MapType_ + // *Type_Function + // *Type_MessageType + // *Type_TypeParam + // *Type_Type + // *Type_Error + // *Type_AbstractType_ + TypeKind isType_TypeKind `protobuf_oneof:"type_kind"` +} + +func (x *Type) Reset() { + *x = Type{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type) ProtoMessage() {} + +func (x *Type) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type.ProtoReflect.Descriptor instead. +func (*Type) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1} +} + +func (m *Type) GetTypeKind() isType_TypeKind { + if m != nil { + return m.TypeKind + } + return nil +} + +func (x *Type) GetDyn() *emptypb.Empty { + if x, ok := x.GetTypeKind().(*Type_Dyn); ok { + return x.Dyn + } + return nil +} + +func (x *Type) GetNull() structpb.NullValue { + if x, ok := x.GetTypeKind().(*Type_Null); ok { + return x.Null + } + return structpb.NullValue_NULL_VALUE +} + +func (x *Type) GetPrimitive() Type_PrimitiveType { + if x, ok := x.GetTypeKind().(*Type_Primitive); ok { + return x.Primitive + } + return Type_PRIMITIVE_TYPE_UNSPECIFIED +} + +func (x *Type) GetWrapper() Type_PrimitiveType { + if x, ok := x.GetTypeKind().(*Type_Wrapper); ok { + return x.Wrapper + } + return Type_PRIMITIVE_TYPE_UNSPECIFIED +} + +func (x *Type) GetWellKnown() Type_WellKnownType { + if x, ok := x.GetTypeKind().(*Type_WellKnown); ok { + return x.WellKnown + } + return Type_WELL_KNOWN_TYPE_UNSPECIFIED +} + +func (x *Type) GetListType() *Type_ListType { + if x, ok := x.GetTypeKind().(*Type_ListType_); ok { + return x.ListType + } + return nil +} + +func (x *Type) GetMapType() *Type_MapType { + if x, ok := x.GetTypeKind().(*Type_MapType_); ok { + return x.MapType + } + return nil +} + +func (x *Type) GetFunction() *Type_FunctionType { + if x, ok := x.GetTypeKind().(*Type_Function); ok { + return x.Function + } + return nil +} + +func (x *Type) GetMessageType() string { + if x, ok := x.GetTypeKind().(*Type_MessageType); ok { + return x.MessageType + } + return "" +} + +func (x *Type) GetTypeParam() string { + if x, ok := x.GetTypeKind().(*Type_TypeParam); ok { + return x.TypeParam + } + return "" +} + +func (x *Type) GetType() *Type { + if x, ok := x.GetTypeKind().(*Type_Type); ok { + return x.Type + } + return nil +} + +func (x *Type) GetError() *emptypb.Empty { + if x, ok := x.GetTypeKind().(*Type_Error); ok { + return x.Error + } + return nil +} + +func (x *Type) GetAbstractType() *Type_AbstractType { + if x, ok := x.GetTypeKind().(*Type_AbstractType_); ok { + return x.AbstractType + } + return nil +} + +type isType_TypeKind interface { + isType_TypeKind() +} + +type Type_Dyn struct { + // Dynamic type. + Dyn *emptypb.Empty `protobuf:"bytes,1,opt,name=dyn,proto3,oneof"` +} + +type Type_Null struct { + // Null value. + Null structpb.NullValue `protobuf:"varint,2,opt,name=null,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Type_Primitive struct { + // Primitive types: `true`, `1u`, `-2.0`, `'string'`, `b'bytes'`. + Primitive Type_PrimitiveType `protobuf:"varint,3,opt,name=primitive,proto3,enum=google.api.expr.v1alpha1.Type_PrimitiveType,oneof"` +} + +type Type_Wrapper struct { + // Wrapper of a primitive type, e.g. `google.protobuf.Int64Value`. + Wrapper Type_PrimitiveType `protobuf:"varint,4,opt,name=wrapper,proto3,enum=google.api.expr.v1alpha1.Type_PrimitiveType,oneof"` +} + +type Type_WellKnown struct { + // Well-known protobuf type such as `google.protobuf.Timestamp`. + WellKnown Type_WellKnownType `protobuf:"varint,5,opt,name=well_known,json=wellKnown,proto3,enum=google.api.expr.v1alpha1.Type_WellKnownType,oneof"` +} + +type Type_ListType_ struct { + // Parameterized list with elements of `list_type`, e.g. `list`. + ListType *Type_ListType `protobuf:"bytes,6,opt,name=list_type,json=listType,proto3,oneof"` +} + +type Type_MapType_ struct { + // Parameterized map with typed keys and values. + MapType *Type_MapType `protobuf:"bytes,7,opt,name=map_type,json=mapType,proto3,oneof"` +} + +type Type_Function struct { + // Function type. + Function *Type_FunctionType `protobuf:"bytes,8,opt,name=function,proto3,oneof"` +} + +type Type_MessageType struct { + // Protocol buffer message type. + // + // The `message_type` string specifies the qualified message type name. For + // example, `google.plus.Profile`. + MessageType string `protobuf:"bytes,9,opt,name=message_type,json=messageType,proto3,oneof"` +} + +type Type_TypeParam struct { + // Type param type. + // + // The `type_param` string specifies the type parameter name, e.g. `list` + // would be a `list_type` whose element type was a `type_param` type + // named `E`. + TypeParam string `protobuf:"bytes,10,opt,name=type_param,json=typeParam,proto3,oneof"` +} + +type Type_Type struct { + // Type type. + // + // The `type` value specifies the target type. e.g. int is type with a + // target type of `Primitive.INT`. + Type *Type `protobuf:"bytes,11,opt,name=type,proto3,oneof"` +} + +type Type_Error struct { + // Error type. + // + // During type-checking if an expression is an error, its type is propagated + // as the `ERROR` type. This permits the type-checker to discover other + // errors present in the expression. + Error *emptypb.Empty `protobuf:"bytes,12,opt,name=error,proto3,oneof"` +} + +type Type_AbstractType_ struct { + // Abstract, application defined type. + AbstractType *Type_AbstractType `protobuf:"bytes,14,opt,name=abstract_type,json=abstractType,proto3,oneof"` +} + +func (*Type_Dyn) isType_TypeKind() {} + +func (*Type_Null) isType_TypeKind() {} + +func (*Type_Primitive) isType_TypeKind() {} + +func (*Type_Wrapper) isType_TypeKind() {} + +func (*Type_WellKnown) isType_TypeKind() {} + +func (*Type_ListType_) isType_TypeKind() {} + +func (*Type_MapType_) isType_TypeKind() {} + +func (*Type_Function) isType_TypeKind() {} + +func (*Type_MessageType) isType_TypeKind() {} + +func (*Type_TypeParam) isType_TypeKind() {} + +func (*Type_Type) isType_TypeKind() {} + +func (*Type_Error) isType_TypeKind() {} + +func (*Type_AbstractType_) isType_TypeKind() {} + +// Represents a declaration of a named value or function. +// +// A declaration is part of the contract between the expression, the agent +// evaluating that expression, and the caller requesting evaluation. +type Decl struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The fully qualified name of the declaration. + // + // Declarations are organized in containers and this represents the full path + // to the declaration in its container, as in `google.api.expr.Decl`. + // + // Declarations used as + // [FunctionDecl.Overload][google.api.expr.v1alpha1.Decl.FunctionDecl.Overload] + // parameters may or may not have a name depending on whether the overload is + // function declaration or a function definition containing a result + // [Expr][google.api.expr.v1alpha1.Expr]. + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + // Required. The declaration kind. + // + // Types that are assignable to DeclKind: + // + // *Decl_Ident + // *Decl_Function + DeclKind isDecl_DeclKind `protobuf_oneof:"decl_kind"` +} + +func (x *Decl) Reset() { + *x = Decl{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl) ProtoMessage() {} + +func (x *Decl) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl.ProtoReflect.Descriptor instead. +func (*Decl) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{2} +} + +func (x *Decl) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (m *Decl) GetDeclKind() isDecl_DeclKind { + if m != nil { + return m.DeclKind + } + return nil +} + +func (x *Decl) GetIdent() *Decl_IdentDecl { + if x, ok := x.GetDeclKind().(*Decl_Ident); ok { + return x.Ident + } + return nil +} + +func (x *Decl) GetFunction() *Decl_FunctionDecl { + if x, ok := x.GetDeclKind().(*Decl_Function); ok { + return x.Function + } + return nil +} + +type isDecl_DeclKind interface { + isDecl_DeclKind() +} + +type Decl_Ident struct { + // Identifier declaration. + Ident *Decl_IdentDecl `protobuf:"bytes,2,opt,name=ident,proto3,oneof"` +} + +type Decl_Function struct { + // Function declaration. + Function *Decl_FunctionDecl `protobuf:"bytes,3,opt,name=function,proto3,oneof"` +} + +func (*Decl_Ident) isDecl_DeclKind() {} + +func (*Decl_Function) isDecl_DeclKind() {} + +// Describes a resolved reference to a declaration. +type Reference struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The fully qualified name of the declaration. + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + // For references to functions, this is a list of `Overload.overload_id` + // values which match according to typing rules. + // + // If the list has more than one element, overload resolution among the + // presented candidates must happen at runtime because of dynamic types. The + // type checker attempts to narrow down this list as much as possible. + // + // Empty if this is not a reference to a + // [Decl.FunctionDecl][google.api.expr.v1alpha1.Decl.FunctionDecl]. + OverloadId []string `protobuf:"bytes,3,rep,name=overload_id,json=overloadId,proto3" json:"overload_id,omitempty"` + // For references to constants, this may contain the value of the + // constant if known at compile time. + Value *Constant `protobuf:"bytes,4,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *Reference) Reset() { + *x = Reference{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Reference) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Reference) ProtoMessage() {} + +func (x *Reference) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Reference.ProtoReflect.Descriptor instead. +func (*Reference) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{3} +} + +func (x *Reference) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (x *Reference) GetOverloadId() []string { + if x != nil { + return x.OverloadId + } + return nil +} + +func (x *Reference) GetValue() *Constant { + if x != nil { + return x.Value + } + return nil +} + +// List type with typed elements, e.g. `list`. +type Type_ListType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The element type. + ElemType *Type `protobuf:"bytes,1,opt,name=elem_type,json=elemType,proto3" json:"elem_type,omitempty"` +} + +func (x *Type_ListType) Reset() { + *x = Type_ListType{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[6] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_ListType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_ListType) ProtoMessage() {} + +func (x *Type_ListType) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[6] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_ListType.ProtoReflect.Descriptor instead. +func (*Type_ListType) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1, 0} +} + +func (x *Type_ListType) GetElemType() *Type { + if x != nil { + return x.ElemType + } + return nil +} + +// Map type with parameterized key and value types, e.g. `map`. +type Type_MapType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The type of the key. + KeyType *Type `protobuf:"bytes,1,opt,name=key_type,json=keyType,proto3" json:"key_type,omitempty"` + // The type of the value. + ValueType *Type `protobuf:"bytes,2,opt,name=value_type,json=valueType,proto3" json:"value_type,omitempty"` +} + +func (x *Type_MapType) Reset() { + *x = Type_MapType{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[7] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_MapType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_MapType) ProtoMessage() {} + +func (x *Type_MapType) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[7] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_MapType.ProtoReflect.Descriptor instead. +func (*Type_MapType) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1, 1} +} + +func (x *Type_MapType) GetKeyType() *Type { + if x != nil { + return x.KeyType + } + return nil +} + +func (x *Type_MapType) GetValueType() *Type { + if x != nil { + return x.ValueType + } + return nil +} + +// Function type with result and arg types. +type Type_FunctionType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Result type of the function. + ResultType *Type `protobuf:"bytes,1,opt,name=result_type,json=resultType,proto3" json:"result_type,omitempty"` + // Argument types of the function. + ArgTypes []*Type `protobuf:"bytes,2,rep,name=arg_types,json=argTypes,proto3" json:"arg_types,omitempty"` +} + +func (x *Type_FunctionType) Reset() { + *x = Type_FunctionType{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[8] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_FunctionType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_FunctionType) ProtoMessage() {} + +func (x *Type_FunctionType) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[8] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_FunctionType.ProtoReflect.Descriptor instead. +func (*Type_FunctionType) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1, 2} +} + +func (x *Type_FunctionType) GetResultType() *Type { + if x != nil { + return x.ResultType + } + return nil +} + +func (x *Type_FunctionType) GetArgTypes() []*Type { + if x != nil { + return x.ArgTypes + } + return nil +} + +// Application defined abstract type. +type Type_AbstractType struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The fully qualified name of this abstract type. + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + // Parameter types for this abstract type. + ParameterTypes []*Type `protobuf:"bytes,2,rep,name=parameter_types,json=parameterTypes,proto3" json:"parameter_types,omitempty"` +} + +func (x *Type_AbstractType) Reset() { + *x = Type_AbstractType{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[9] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Type_AbstractType) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Type_AbstractType) ProtoMessage() {} + +func (x *Type_AbstractType) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[9] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Type_AbstractType.ProtoReflect.Descriptor instead. +func (*Type_AbstractType) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{1, 3} +} + +func (x *Type_AbstractType) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (x *Type_AbstractType) GetParameterTypes() []*Type { + if x != nil { + return x.ParameterTypes + } + return nil +} + +// Identifier declaration which specifies its type and optional `Expr` value. +// +// An identifier without a value is a declaration that must be provided at +// evaluation time. An identifier with a value should resolve to a constant, +// but may be used in conjunction with other identifiers bound at evaluation +// time. +type Decl_IdentDecl struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. The type of the identifier. + Type *Type `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"` + // The constant value of the identifier. If not specified, the identifier + // must be supplied at evaluation time. + Value *Constant `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"` + // Documentation string for the identifier. + Doc string `protobuf:"bytes,3,opt,name=doc,proto3" json:"doc,omitempty"` +} + +func (x *Decl_IdentDecl) Reset() { + *x = Decl_IdentDecl{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[10] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl_IdentDecl) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl_IdentDecl) ProtoMessage() {} + +func (x *Decl_IdentDecl) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[10] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl_IdentDecl.ProtoReflect.Descriptor instead. +func (*Decl_IdentDecl) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{2, 0} +} + +func (x *Decl_IdentDecl) GetType() *Type { + if x != nil { + return x.Type + } + return nil +} + +func (x *Decl_IdentDecl) GetValue() *Constant { + if x != nil { + return x.Value + } + return nil +} + +func (x *Decl_IdentDecl) GetDoc() string { + if x != nil { + return x.Doc + } + return "" +} + +// Function declaration specifies one or more overloads which indicate the +// function's parameter types and return type. +// +// Functions have no observable side-effects (there may be side-effects like +// logging which are not observable from CEL). +type Decl_FunctionDecl struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. List of function overloads, must contain at least one overload. + Overloads []*Decl_FunctionDecl_Overload `protobuf:"bytes,1,rep,name=overloads,proto3" json:"overloads,omitempty"` +} + +func (x *Decl_FunctionDecl) Reset() { + *x = Decl_FunctionDecl{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[11] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl_FunctionDecl) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl_FunctionDecl) ProtoMessage() {} + +func (x *Decl_FunctionDecl) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[11] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl_FunctionDecl.ProtoReflect.Descriptor instead. +func (*Decl_FunctionDecl) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{2, 1} +} + +func (x *Decl_FunctionDecl) GetOverloads() []*Decl_FunctionDecl_Overload { + if x != nil { + return x.Overloads + } + return nil +} + +// An overload indicates a function's parameter types and return type, and +// may optionally include a function body described in terms of +// [Expr][google.api.expr.v1alpha1.Expr] values. +// +// Functions overloads are declared in either a function or method +// call-style. For methods, the `params[0]` is the expected type of the +// target receiver. +// +// Overloads must have non-overlapping argument types after erasure of all +// parameterized type variables (similar as type erasure in Java). +type Decl_FunctionDecl_Overload struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. Globally unique overload name of the function which reflects + // the function name and argument types. + // + // This will be used by a [Reference][google.api.expr.v1alpha1.Reference] + // to indicate the `overload_id` that was resolved for the function + // `name`. + OverloadId string `protobuf:"bytes,1,opt,name=overload_id,json=overloadId,proto3" json:"overload_id,omitempty"` + // List of function parameter [Type][google.api.expr.v1alpha1.Type] + // values. + // + // Param types are disjoint after generic type parameters have been + // replaced with the type `DYN`. Since the `DYN` type is compatible with + // any other type, this means that if `A` is a type parameter, the + // function types `int` and `int` are not disjoint. Likewise, + // `map` is not disjoint from `map`. + // + // When the `result_type` of a function is a generic type param, the + // type param name also appears as the `type` of on at least one params. + Params []*Type `protobuf:"bytes,2,rep,name=params,proto3" json:"params,omitempty"` + // The type param names associated with the function declaration. + // + // For example, `function ex(K key, map map) : V` would yield + // the type params of `K, V`. + TypeParams []string `protobuf:"bytes,3,rep,name=type_params,json=typeParams,proto3" json:"type_params,omitempty"` + // Required. The result type of the function. For example, the operator + // `string.isEmpty()` would have `result_type` of `kind: BOOL`. + ResultType *Type `protobuf:"bytes,4,opt,name=result_type,json=resultType,proto3" json:"result_type,omitempty"` + // Whether the function is to be used in a method call-style `x.f(...)` + // or a function call-style `f(x, ...)`. + // + // For methods, the first parameter declaration, `params[0]` is the + // expected type of the target receiver. + IsInstanceFunction bool `protobuf:"varint,5,opt,name=is_instance_function,json=isInstanceFunction,proto3" json:"is_instance_function,omitempty"` + // Documentation string for the overload. + Doc string `protobuf:"bytes,6,opt,name=doc,proto3" json:"doc,omitempty"` +} + +func (x *Decl_FunctionDecl_Overload) Reset() { + *x = Decl_FunctionDecl_Overload{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[12] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Decl_FunctionDecl_Overload) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Decl_FunctionDecl_Overload) ProtoMessage() {} + +func (x *Decl_FunctionDecl_Overload) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_checked_proto_msgTypes[12] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Decl_FunctionDecl_Overload.ProtoReflect.Descriptor instead. +func (*Decl_FunctionDecl_Overload) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP(), []int{2, 1, 0} +} + +func (x *Decl_FunctionDecl_Overload) GetOverloadId() string { + if x != nil { + return x.OverloadId + } + return "" +} + +func (x *Decl_FunctionDecl_Overload) GetParams() []*Type { + if x != nil { + return x.Params + } + return nil +} + +func (x 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file_google_api_expr_v1alpha1_checked_proto_rawDescGZIP() []byte { + file_google_api_expr_v1alpha1_checked_proto_rawDescOnce.Do(func() { + file_google_api_expr_v1alpha1_checked_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_api_expr_v1alpha1_checked_proto_rawDescData) + }) + return file_google_api_expr_v1alpha1_checked_proto_rawDescData +} + +var file_google_api_expr_v1alpha1_checked_proto_enumTypes = make([]protoimpl.EnumInfo, 2) +var file_google_api_expr_v1alpha1_checked_proto_msgTypes = make([]protoimpl.MessageInfo, 13) +var file_google_api_expr_v1alpha1_checked_proto_goTypes = []interface{}{ + (Type_PrimitiveType)(0), // 0: google.api.expr.v1alpha1.Type.PrimitiveType + (Type_WellKnownType)(0), // 1: google.api.expr.v1alpha1.Type.WellKnownType + (*CheckedExpr)(nil), // 2: google.api.expr.v1alpha1.CheckedExpr + (*Type)(nil), // 3: google.api.expr.v1alpha1.Type + (*Decl)(nil), // 4: google.api.expr.v1alpha1.Decl + (*Reference)(nil), // 5: google.api.expr.v1alpha1.Reference + nil, // 6: google.api.expr.v1alpha1.CheckedExpr.ReferenceMapEntry + nil, // 7: google.api.expr.v1alpha1.CheckedExpr.TypeMapEntry + (*Type_ListType)(nil), // 8: google.api.expr.v1alpha1.Type.ListType + (*Type_MapType)(nil), // 9: google.api.expr.v1alpha1.Type.MapType + (*Type_FunctionType)(nil), // 10: google.api.expr.v1alpha1.Type.FunctionType + (*Type_AbstractType)(nil), // 11: google.api.expr.v1alpha1.Type.AbstractType + (*Decl_IdentDecl)(nil), // 12: google.api.expr.v1alpha1.Decl.IdentDecl + (*Decl_FunctionDecl)(nil), // 13: google.api.expr.v1alpha1.Decl.FunctionDecl + (*Decl_FunctionDecl_Overload)(nil), // 14: google.api.expr.v1alpha1.Decl.FunctionDecl.Overload + (*SourceInfo)(nil), // 15: google.api.expr.v1alpha1.SourceInfo + (*Expr)(nil), // 16: google.api.expr.v1alpha1.Expr + (*emptypb.Empty)(nil), // 17: google.protobuf.Empty + (structpb.NullValue)(0), // 18: google.protobuf.NullValue + (*Constant)(nil), // 19: google.api.expr.v1alpha1.Constant +} +var file_google_api_expr_v1alpha1_checked_proto_depIdxs = []int32{ + 6, // 0: google.api.expr.v1alpha1.CheckedExpr.reference_map:type_name -> google.api.expr.v1alpha1.CheckedExpr.ReferenceMapEntry + 7, // 1: google.api.expr.v1alpha1.CheckedExpr.type_map:type_name -> google.api.expr.v1alpha1.CheckedExpr.TypeMapEntry + 15, // 2: google.api.expr.v1alpha1.CheckedExpr.source_info:type_name -> google.api.expr.v1alpha1.SourceInfo + 16, // 3: google.api.expr.v1alpha1.CheckedExpr.expr:type_name -> google.api.expr.v1alpha1.Expr + 17, // 4: google.api.expr.v1alpha1.Type.dyn:type_name -> google.protobuf.Empty + 18, // 5: google.api.expr.v1alpha1.Type.null:type_name -> google.protobuf.NullValue + 0, // 6: google.api.expr.v1alpha1.Type.primitive:type_name -> google.api.expr.v1alpha1.Type.PrimitiveType + 0, // 7: google.api.expr.v1alpha1.Type.wrapper:type_name -> google.api.expr.v1alpha1.Type.PrimitiveType + 1, // 8: google.api.expr.v1alpha1.Type.well_known:type_name -> google.api.expr.v1alpha1.Type.WellKnownType + 8, // 9: google.api.expr.v1alpha1.Type.list_type:type_name -> google.api.expr.v1alpha1.Type.ListType + 9, // 10: google.api.expr.v1alpha1.Type.map_type:type_name -> google.api.expr.v1alpha1.Type.MapType + 10, // 11: google.api.expr.v1alpha1.Type.function:type_name -> google.api.expr.v1alpha1.Type.FunctionType + 3, // 12: google.api.expr.v1alpha1.Type.type:type_name -> google.api.expr.v1alpha1.Type + 17, // 13: google.api.expr.v1alpha1.Type.error:type_name -> google.protobuf.Empty + 11, // 14: google.api.expr.v1alpha1.Type.abstract_type:type_name -> google.api.expr.v1alpha1.Type.AbstractType + 12, // 15: google.api.expr.v1alpha1.Decl.ident:type_name -> google.api.expr.v1alpha1.Decl.IdentDecl + 13, // 16: google.api.expr.v1alpha1.Decl.function:type_name -> google.api.expr.v1alpha1.Decl.FunctionDecl + 19, // 17: google.api.expr.v1alpha1.Reference.value:type_name -> google.api.expr.v1alpha1.Constant + 5, // 18: google.api.expr.v1alpha1.CheckedExpr.ReferenceMapEntry.value:type_name -> google.api.expr.v1alpha1.Reference + 3, // 19: google.api.expr.v1alpha1.CheckedExpr.TypeMapEntry.value:type_name -> google.api.expr.v1alpha1.Type + 3, // 20: google.api.expr.v1alpha1.Type.ListType.elem_type:type_name -> google.api.expr.v1alpha1.Type + 3, // 21: google.api.expr.v1alpha1.Type.MapType.key_type:type_name -> google.api.expr.v1alpha1.Type + 3, // 22: google.api.expr.v1alpha1.Type.MapType.value_type:type_name -> google.api.expr.v1alpha1.Type + 3, // 23: google.api.expr.v1alpha1.Type.FunctionType.result_type:type_name -> google.api.expr.v1alpha1.Type + 3, // 24: google.api.expr.v1alpha1.Type.FunctionType.arg_types:type_name -> google.api.expr.v1alpha1.Type + 3, // 25: google.api.expr.v1alpha1.Type.AbstractType.parameter_types:type_name -> google.api.expr.v1alpha1.Type + 3, // 26: google.api.expr.v1alpha1.Decl.IdentDecl.type:type_name -> google.api.expr.v1alpha1.Type + 19, // 27: google.api.expr.v1alpha1.Decl.IdentDecl.value:type_name -> google.api.expr.v1alpha1.Constant + 14, // 28: google.api.expr.v1alpha1.Decl.FunctionDecl.overloads:type_name -> google.api.expr.v1alpha1.Decl.FunctionDecl.Overload + 3, // 29: google.api.expr.v1alpha1.Decl.FunctionDecl.Overload.params:type_name -> google.api.expr.v1alpha1.Type + 3, // 30: google.api.expr.v1alpha1.Decl.FunctionDecl.Overload.result_type:type_name -> google.api.expr.v1alpha1.Type + 31, // [31:31] is the sub-list for method output_type + 31, // [31:31] is the sub-list for method input_type + 31, // [31:31] is the sub-list for extension type_name + 31, // [31:31] is the sub-list for extension extendee + 0, // [0:31] is the sub-list for field type_name +} + +func init() { file_google_api_expr_v1alpha1_checked_proto_init() } +func file_google_api_expr_v1alpha1_checked_proto_init() { + if File_google_api_expr_v1alpha1_checked_proto != nil { + return + } + file_google_api_expr_v1alpha1_syntax_proto_init() + if !protoimpl.UnsafeEnabled { + file_google_api_expr_v1alpha1_checked_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*CheckedExpr); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Reference); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_ListType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_MapType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_FunctionType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Type_AbstractType); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl_IdentDecl); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl_FunctionDecl); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Decl_FunctionDecl_Overload); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[1].OneofWrappers = []interface{}{ + (*Type_Dyn)(nil), + (*Type_Null)(nil), + (*Type_Primitive)(nil), + (*Type_Wrapper)(nil), + (*Type_WellKnown)(nil), + (*Type_ListType_)(nil), + (*Type_MapType_)(nil), + (*Type_Function)(nil), + (*Type_MessageType)(nil), + (*Type_TypeParam)(nil), + (*Type_Type)(nil), + (*Type_Error)(nil), + (*Type_AbstractType_)(nil), + } + file_google_api_expr_v1alpha1_checked_proto_msgTypes[2].OneofWrappers = []interface{}{ + (*Decl_Ident)(nil), + (*Decl_Function)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_google_api_expr_v1alpha1_checked_proto_rawDesc, + NumEnums: 2, + NumMessages: 13, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_api_expr_v1alpha1_checked_proto_goTypes, + DependencyIndexes: file_google_api_expr_v1alpha1_checked_proto_depIdxs, + EnumInfos: file_google_api_expr_v1alpha1_checked_proto_enumTypes, + MessageInfos: file_google_api_expr_v1alpha1_checked_proto_msgTypes, + }.Build() + File_google_api_expr_v1alpha1_checked_proto = out.File + file_google_api_expr_v1alpha1_checked_proto_rawDesc = nil + file_google_api_expr_v1alpha1_checked_proto_goTypes = nil + file_google_api_expr_v1alpha1_checked_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/eval.pb.go b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/eval.pb.go new file mode 100644 index 0000000000..0a2ffb5955 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/eval.pb.go @@ -0,0 +1,580 @@ +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.26.0 +// protoc v4.24.4 +// source: google/api/expr/v1alpha1/eval.proto + +package expr + +import ( + reflect "reflect" + sync "sync" + + status "google.golang.org/genproto/googleapis/rpc/status" + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// The state of an evaluation. +// +// Can represent an inital, partial, or completed state of evaluation. +type EvalState struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The unique values referenced in this message. + Values []*ExprValue `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` + // An ordered list of results. + // + // Tracks the flow of evaluation through the expression. + // May be sparse. + Results []*EvalState_Result `protobuf:"bytes,3,rep,name=results,proto3" json:"results,omitempty"` +} + +func (x *EvalState) Reset() { + *x = EvalState{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *EvalState) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*EvalState) ProtoMessage() {} + +func (x *EvalState) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use EvalState.ProtoReflect.Descriptor instead. +func (*EvalState) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_eval_proto_rawDescGZIP(), []int{0} +} + +func (x *EvalState) GetValues() []*ExprValue { + if x != nil { + return x.Values + } + return nil +} + +func (x *EvalState) GetResults() []*EvalState_Result { + if x != nil { + return x.Results + } + return nil +} + +// The value of an evaluated expression. +type ExprValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // An expression can resolve to a value, error or unknown. + // + // Types that are assignable to Kind: + // + // *ExprValue_Value + // *ExprValue_Error + // *ExprValue_Unknown + Kind isExprValue_Kind `protobuf_oneof:"kind"` +} + +func (x *ExprValue) Reset() { + *x = ExprValue{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ExprValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ExprValue) ProtoMessage() {} + +func (x *ExprValue) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ExprValue.ProtoReflect.Descriptor instead. +func (*ExprValue) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_eval_proto_rawDescGZIP(), []int{1} +} + +func (m *ExprValue) GetKind() isExprValue_Kind { + if m != nil { + return m.Kind + } + return nil +} + +func (x *ExprValue) GetValue() *Value { + if x, ok := x.GetKind().(*ExprValue_Value); ok { + return x.Value + } + return nil +} + +func (x *ExprValue) GetError() *ErrorSet { + if x, ok := x.GetKind().(*ExprValue_Error); ok { + return x.Error + } + return nil +} + +func (x *ExprValue) GetUnknown() *UnknownSet { + if x, ok := x.GetKind().(*ExprValue_Unknown); ok { + return x.Unknown + } + return nil +} + +type isExprValue_Kind interface { + isExprValue_Kind() +} + +type ExprValue_Value struct { + // A concrete value. + Value *Value `protobuf:"bytes,1,opt,name=value,proto3,oneof"` +} + +type ExprValue_Error struct { + // The set of errors in the critical path of evalution. + // + // Only errors in the critical path are included. For example, + // `( || true) && ` will only result in ``, + // while ` || ` will result in both `` and + // ``. + // + // Errors cause by the presence of other errors are not included in the + // set. For example `.foo`, `foo()`, and ` + 1` will + // only result in ``. + // + // Multiple errors *might* be included when evaluation could result + // in different errors. For example ` + ` and + // `foo(, )` may result in ``, `` or both. + // The exact subset of errors included for this case is unspecified and + // depends on the implementation details of the evaluator. + Error *ErrorSet `protobuf:"bytes,2,opt,name=error,proto3,oneof"` +} + +type ExprValue_Unknown struct { + // The set of unknowns in the critical path of evaluation. + // + // Unknown behaves identically to Error with regards to propagation. + // Specifically, only unknowns in the critical path are included, unknowns + // caused by the presence of other unknowns are not included, and multiple + // unknowns *might* be included included when evaluation could result in + // different unknowns. For example: + // + // ( || true) && -> + // || -> + // .foo -> + // foo() -> + // + -> or + // + // Unknown takes precidence over Error in cases where a `Value` can short + // circuit the result: + // + // || -> + // && -> + // + // Errors take precidence in all other cases: + // + // + -> + // foo(, ) -> + Unknown *UnknownSet `protobuf:"bytes,3,opt,name=unknown,proto3,oneof"` +} + +func (*ExprValue_Value) isExprValue_Kind() {} + +func (*ExprValue_Error) isExprValue_Kind() {} + +func (*ExprValue_Unknown) isExprValue_Kind() {} + +// A set of errors. +// +// The errors included depend on the context. See `ExprValue.error`. +type ErrorSet struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The errors in the set. + Errors []*status.Status `protobuf:"bytes,1,rep,name=errors,proto3" json:"errors,omitempty"` +} + +func (x *ErrorSet) Reset() { + *x = ErrorSet{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ErrorSet) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ErrorSet) ProtoMessage() {} + +func (x *ErrorSet) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ErrorSet.ProtoReflect.Descriptor instead. +func (*ErrorSet) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_eval_proto_rawDescGZIP(), []int{2} +} + +func (x *ErrorSet) GetErrors() []*status.Status { + if x != nil { + return x.Errors + } + return nil +} + +// A set of expressions for which the value is unknown. +// +// The unknowns included depend on the context. See `ExprValue.unknown`. +type UnknownSet struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The ids of the expressions with unknown values. + Exprs []int64 `protobuf:"varint,1,rep,packed,name=exprs,proto3" json:"exprs,omitempty"` +} + +func (x *UnknownSet) Reset() { + *x = UnknownSet{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *UnknownSet) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*UnknownSet) ProtoMessage() {} + +func (x *UnknownSet) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use UnknownSet.ProtoReflect.Descriptor instead. +func (*UnknownSet) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_eval_proto_rawDescGZIP(), []int{3} +} + +func (x *UnknownSet) GetExprs() []int64 { + if x != nil { + return x.Exprs + } + return nil +} + +// A single evalution result. +type EvalState_Result struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The id of the expression this result if for. + Expr int64 `protobuf:"varint,1,opt,name=expr,proto3" json:"expr,omitempty"` + // The index in `values` of the resulting value. + Value int64 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *EvalState_Result) Reset() { + *x = EvalState_Result{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *EvalState_Result) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*EvalState_Result) ProtoMessage() {} + +func (x *EvalState_Result) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_eval_proto_msgTypes[4] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use EvalState_Result.ProtoReflect.Descriptor instead. +func (*EvalState_Result) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_eval_proto_rawDescGZIP(), []int{0, 0} +} + +func (x *EvalState_Result) GetExpr() int64 { + if x != nil { + return x.Expr + } + return 0 +} + +func (x *EvalState_Result) GetValue() int64 { + if x != nil { + return x.Value + } + return 0 +} + +var File_google_api_expr_v1alpha1_eval_proto protoreflect.FileDescriptor + +var 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protoimpl.X.CompressGZIP(file_google_api_expr_v1alpha1_eval_proto_rawDescData) + }) + return file_google_api_expr_v1alpha1_eval_proto_rawDescData +} + +var file_google_api_expr_v1alpha1_eval_proto_msgTypes = make([]protoimpl.MessageInfo, 5) +var file_google_api_expr_v1alpha1_eval_proto_goTypes = []interface{}{ + (*EvalState)(nil), // 0: google.api.expr.v1alpha1.EvalState + (*ExprValue)(nil), // 1: google.api.expr.v1alpha1.ExprValue + (*ErrorSet)(nil), // 2: google.api.expr.v1alpha1.ErrorSet + (*UnknownSet)(nil), // 3: google.api.expr.v1alpha1.UnknownSet + (*EvalState_Result)(nil), // 4: google.api.expr.v1alpha1.EvalState.Result + (*Value)(nil), // 5: google.api.expr.v1alpha1.Value + (*status.Status)(nil), // 6: google.rpc.Status +} +var file_google_api_expr_v1alpha1_eval_proto_depIdxs = []int32{ + 1, // 0: google.api.expr.v1alpha1.EvalState.values:type_name -> google.api.expr.v1alpha1.ExprValue + 4, // 1: google.api.expr.v1alpha1.EvalState.results:type_name -> google.api.expr.v1alpha1.EvalState.Result + 5, // 2: google.api.expr.v1alpha1.ExprValue.value:type_name -> google.api.expr.v1alpha1.Value + 2, // 3: google.api.expr.v1alpha1.ExprValue.error:type_name -> google.api.expr.v1alpha1.ErrorSet + 3, // 4: google.api.expr.v1alpha1.ExprValue.unknown:type_name -> google.api.expr.v1alpha1.UnknownSet + 6, // 5: google.api.expr.v1alpha1.ErrorSet.errors:type_name -> google.rpc.Status + 6, // [6:6] is the sub-list for method output_type + 6, // [6:6] is the sub-list for method input_type + 6, // [6:6] is the sub-list for extension type_name + 6, // [6:6] is the sub-list for extension extendee + 0, // [0:6] is the sub-list for field type_name +} + +func init() { file_google_api_expr_v1alpha1_eval_proto_init() } +func file_google_api_expr_v1alpha1_eval_proto_init() { + if File_google_api_expr_v1alpha1_eval_proto != nil { + return + } + file_google_api_expr_v1alpha1_value_proto_init() + if !protoimpl.UnsafeEnabled { + file_google_api_expr_v1alpha1_eval_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*EvalState); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_eval_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ExprValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_eval_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ErrorSet); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_eval_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*UnknownSet); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_eval_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*EvalState_Result); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_google_api_expr_v1alpha1_eval_proto_msgTypes[1].OneofWrappers = []interface{}{ + (*ExprValue_Value)(nil), + (*ExprValue_Error)(nil), + (*ExprValue_Unknown)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_google_api_expr_v1alpha1_eval_proto_rawDesc, + NumEnums: 0, + NumMessages: 5, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_api_expr_v1alpha1_eval_proto_goTypes, + DependencyIndexes: file_google_api_expr_v1alpha1_eval_proto_depIdxs, + MessageInfos: file_google_api_expr_v1alpha1_eval_proto_msgTypes, + }.Build() + File_google_api_expr_v1alpha1_eval_proto = out.File + file_google_api_expr_v1alpha1_eval_proto_rawDesc = nil + file_google_api_expr_v1alpha1_eval_proto_goTypes = nil + file_google_api_expr_v1alpha1_eval_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/explain.pb.go b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/explain.pb.go new file mode 100644 index 0000000000..57aaa2c9f5 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/explain.pb.go @@ -0,0 +1,275 @@ +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.26.0 +// protoc v4.24.4 +// source: google/api/expr/v1alpha1/explain.proto + +package expr + +import ( + reflect "reflect" + sync "sync" + + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// Values of intermediate expressions produced when evaluating expression. +// Deprecated, use `EvalState` instead. +// +// Deprecated: Do not use. +type Explain struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // All of the observed values. + // + // The field value_index is an index in the values list. + // Separating values from steps is needed to remove redundant values. + Values []*Value `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` + // List of steps. + // + // Repeated evaluations of the same expression generate new ExprStep + // instances. The order of such ExprStep instances matches the order of + // elements returned by Comprehension.iter_range. + ExprSteps []*Explain_ExprStep `protobuf:"bytes,2,rep,name=expr_steps,json=exprSteps,proto3" json:"expr_steps,omitempty"` +} + +func (x *Explain) Reset() { + *x = Explain{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_explain_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Explain) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Explain) ProtoMessage() {} + +func (x *Explain) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_explain_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Explain.ProtoReflect.Descriptor instead. +func (*Explain) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_explain_proto_rawDescGZIP(), []int{0} +} + +func (x *Explain) GetValues() []*Value { + if x != nil { + return x.Values + } + return nil +} + +func (x *Explain) GetExprSteps() []*Explain_ExprStep { + if x != nil { + return x.ExprSteps + } + return nil +} + +// ID and value index of one step. +type Explain_ExprStep struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // ID of corresponding Expr node. + Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"` + // Index of the value in the values list. + ValueIndex int32 `protobuf:"varint,2,opt,name=value_index,json=valueIndex,proto3" json:"value_index,omitempty"` +} + +func (x *Explain_ExprStep) Reset() { + *x = Explain_ExprStep{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_explain_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Explain_ExprStep) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Explain_ExprStep) ProtoMessage() {} + +func (x *Explain_ExprStep) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_explain_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Explain_ExprStep.ProtoReflect.Descriptor instead. +func (*Explain_ExprStep) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_explain_proto_rawDescGZIP(), []int{0, 0} +} + +func (x *Explain_ExprStep) GetId() int64 { + if x != nil { + return x.Id + } + return 0 +} + +func (x *Explain_ExprStep) GetValueIndex() int32 { + if x != nil { + return x.ValueIndex + } + return 0 +} + +var File_google_api_expr_v1alpha1_explain_proto 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file_google_api_expr_v1alpha1_explain_proto_rawDescGZIP() []byte { + file_google_api_expr_v1alpha1_explain_proto_rawDescOnce.Do(func() { + file_google_api_expr_v1alpha1_explain_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_api_expr_v1alpha1_explain_proto_rawDescData) + }) + return file_google_api_expr_v1alpha1_explain_proto_rawDescData +} + +var file_google_api_expr_v1alpha1_explain_proto_msgTypes = make([]protoimpl.MessageInfo, 2) +var file_google_api_expr_v1alpha1_explain_proto_goTypes = []interface{}{ + (*Explain)(nil), // 0: google.api.expr.v1alpha1.Explain + (*Explain_ExprStep)(nil), // 1: google.api.expr.v1alpha1.Explain.ExprStep + (*Value)(nil), // 2: google.api.expr.v1alpha1.Value +} +var file_google_api_expr_v1alpha1_explain_proto_depIdxs = []int32{ + 2, // 0: google.api.expr.v1alpha1.Explain.values:type_name -> google.api.expr.v1alpha1.Value + 1, // 1: google.api.expr.v1alpha1.Explain.expr_steps:type_name -> google.api.expr.v1alpha1.Explain.ExprStep + 2, // [2:2] is the sub-list for method output_type + 2, // [2:2] is the sub-list for method input_type + 2, // [2:2] is the sub-list for extension type_name + 2, // [2:2] is the sub-list for extension extendee + 0, // [0:2] is the sub-list for field type_name +} + +func init() { file_google_api_expr_v1alpha1_explain_proto_init() } +func file_google_api_expr_v1alpha1_explain_proto_init() { + if File_google_api_expr_v1alpha1_explain_proto != nil { + return + } + file_google_api_expr_v1alpha1_value_proto_init() + if !protoimpl.UnsafeEnabled { + file_google_api_expr_v1alpha1_explain_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Explain); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_explain_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Explain_ExprStep); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_google_api_expr_v1alpha1_explain_proto_rawDesc, + NumEnums: 0, + NumMessages: 2, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_api_expr_v1alpha1_explain_proto_goTypes, + DependencyIndexes: file_google_api_expr_v1alpha1_explain_proto_depIdxs, + MessageInfos: file_google_api_expr_v1alpha1_explain_proto_msgTypes, + }.Build() + File_google_api_expr_v1alpha1_explain_proto = out.File + file_google_api_expr_v1alpha1_explain_proto_rawDesc = nil + file_google_api_expr_v1alpha1_explain_proto_goTypes = nil + file_google_api_expr_v1alpha1_explain_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/syntax.pb.go b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/syntax.pb.go new file mode 100644 index 0000000000..c90c6015d2 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/syntax.pb.go @@ -0,0 +1,2040 @@ +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.26.0 +// protoc v4.24.4 +// source: google/api/expr/v1alpha1/syntax.proto + +package expr + +import ( + reflect "reflect" + sync "sync" + + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + durationpb "google.golang.org/protobuf/types/known/durationpb" + structpb "google.golang.org/protobuf/types/known/structpb" + timestamppb "google.golang.org/protobuf/types/known/timestamppb" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// CEL component specifier. +type SourceInfo_Extension_Component int32 + +const ( + // Unspecified, default. + SourceInfo_Extension_COMPONENT_UNSPECIFIED SourceInfo_Extension_Component = 0 + // Parser. Converts a CEL string to an AST. + SourceInfo_Extension_COMPONENT_PARSER SourceInfo_Extension_Component = 1 + // Type checker. Checks that references in an AST are defined and types + // agree. + SourceInfo_Extension_COMPONENT_TYPE_CHECKER SourceInfo_Extension_Component = 2 + // Runtime. Evaluates a parsed and optionally checked CEL AST against a + // context. + SourceInfo_Extension_COMPONENT_RUNTIME SourceInfo_Extension_Component = 3 +) + +// Enum value maps for SourceInfo_Extension_Component. +var ( + SourceInfo_Extension_Component_name = map[int32]string{ + 0: "COMPONENT_UNSPECIFIED", + 1: "COMPONENT_PARSER", + 2: "COMPONENT_TYPE_CHECKER", + 3: "COMPONENT_RUNTIME", + } + SourceInfo_Extension_Component_value = map[string]int32{ + "COMPONENT_UNSPECIFIED": 0, + "COMPONENT_PARSER": 1, + "COMPONENT_TYPE_CHECKER": 2, + "COMPONENT_RUNTIME": 3, + } +) + +func (x SourceInfo_Extension_Component) Enum() *SourceInfo_Extension_Component { + p := new(SourceInfo_Extension_Component) + *p = x + return p +} + +func (x SourceInfo_Extension_Component) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (SourceInfo_Extension_Component) Descriptor() protoreflect.EnumDescriptor { + return file_google_api_expr_v1alpha1_syntax_proto_enumTypes[0].Descriptor() +} + +func (SourceInfo_Extension_Component) Type() protoreflect.EnumType { + return &file_google_api_expr_v1alpha1_syntax_proto_enumTypes[0] +} + +func (x SourceInfo_Extension_Component) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use SourceInfo_Extension_Component.Descriptor instead. +func (SourceInfo_Extension_Component) EnumDescriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{3, 0, 0} +} + +// An expression together with source information as returned by the parser. +type ParsedExpr struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The parsed expression. + Expr *Expr `protobuf:"bytes,2,opt,name=expr,proto3" json:"expr,omitempty"` + // The source info derived from input that generated the parsed `expr`. + SourceInfo *SourceInfo `protobuf:"bytes,3,opt,name=source_info,json=sourceInfo,proto3" json:"source_info,omitempty"` +} + +func (x *ParsedExpr) Reset() { + *x = ParsedExpr{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ParsedExpr) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ParsedExpr) ProtoMessage() {} + +func (x *ParsedExpr) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ParsedExpr.ProtoReflect.Descriptor instead. +func (*ParsedExpr) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{0} +} + +func (x *ParsedExpr) GetExpr() *Expr { + if x != nil { + return x.Expr + } + return nil +} + +func (x *ParsedExpr) GetSourceInfo() *SourceInfo { + if x != nil { + return x.SourceInfo + } + return nil +} + +// An abstract representation of a common expression. +// +// Expressions are abstractly represented as a collection of identifiers, +// select statements, function calls, literals, and comprehensions. All +// operators with the exception of the '.' operator are modelled as function +// calls. This makes it easy to represent new operators into the existing AST. +// +// All references within expressions must resolve to a +// [Decl][google.api.expr.v1alpha1.Decl] provided at type-check for an +// expression to be valid. A reference may either be a bare identifier `name` or +// a qualified identifier `google.api.name`. References may either refer to a +// value or a function declaration. +// +// For example, the expression `google.api.name.startsWith('expr')` references +// the declaration `google.api.name` within a +// [Expr.Select][google.api.expr.v1alpha1.Expr.Select] expression, and the +// function declaration `startsWith`. +type Expr struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. An id assigned to this node by the parser which is unique in a + // given expression tree. This is used to associate type information and other + // attributes to a node in the parse tree. + Id int64 `protobuf:"varint,2,opt,name=id,proto3" json:"id,omitempty"` + // Required. Variants of expressions. + // + // Types that are assignable to ExprKind: + // + // *Expr_ConstExpr + // *Expr_IdentExpr + // *Expr_SelectExpr + // *Expr_CallExpr + // *Expr_ListExpr + // *Expr_StructExpr + // *Expr_ComprehensionExpr + ExprKind isExpr_ExprKind `protobuf_oneof:"expr_kind"` +} + +func (x *Expr) Reset() { + *x = Expr{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr) ProtoMessage() {} + +func (x *Expr) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr.ProtoReflect.Descriptor instead. +func (*Expr) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1} +} + +func (x *Expr) GetId() int64 { + if x != nil { + return x.Id + } + return 0 +} + +func (m *Expr) GetExprKind() isExpr_ExprKind { + if m != nil { + return m.ExprKind + } + return nil +} + +func (x *Expr) GetConstExpr() *Constant { + if x, ok := x.GetExprKind().(*Expr_ConstExpr); ok { + return x.ConstExpr + } + return nil +} + +func (x *Expr) GetIdentExpr() *Expr_Ident { + if x, ok := x.GetExprKind().(*Expr_IdentExpr); ok { + return x.IdentExpr + } + return nil +} + +func (x *Expr) GetSelectExpr() *Expr_Select { + if x, ok := x.GetExprKind().(*Expr_SelectExpr); ok { + return x.SelectExpr + } + return nil +} + +func (x *Expr) GetCallExpr() *Expr_Call { + if x, ok := x.GetExprKind().(*Expr_CallExpr); ok { + return x.CallExpr + } + return nil +} + +func (x *Expr) GetListExpr() *Expr_CreateList { + if x, ok := x.GetExprKind().(*Expr_ListExpr); ok { + return x.ListExpr + } + return nil +} + +func (x *Expr) GetStructExpr() *Expr_CreateStruct { + if x, ok := x.GetExprKind().(*Expr_StructExpr); ok { + return x.StructExpr + } + return nil +} + +func (x *Expr) GetComprehensionExpr() *Expr_Comprehension { + if x, ok := x.GetExprKind().(*Expr_ComprehensionExpr); ok { + return x.ComprehensionExpr + } + return nil +} + +type isExpr_ExprKind interface { + isExpr_ExprKind() +} + +type Expr_ConstExpr struct { + // A literal expression. + ConstExpr *Constant `protobuf:"bytes,3,opt,name=const_expr,json=constExpr,proto3,oneof"` +} + +type Expr_IdentExpr struct { + // An identifier expression. + IdentExpr *Expr_Ident `protobuf:"bytes,4,opt,name=ident_expr,json=identExpr,proto3,oneof"` +} + +type Expr_SelectExpr struct { + // A field selection expression, e.g. `request.auth`. + SelectExpr *Expr_Select `protobuf:"bytes,5,opt,name=select_expr,json=selectExpr,proto3,oneof"` +} + +type Expr_CallExpr struct { + // A call expression, including calls to predefined functions and operators. + CallExpr *Expr_Call `protobuf:"bytes,6,opt,name=call_expr,json=callExpr,proto3,oneof"` +} + +type Expr_ListExpr struct { + // A list creation expression. + ListExpr *Expr_CreateList `protobuf:"bytes,7,opt,name=list_expr,json=listExpr,proto3,oneof"` +} + +type Expr_StructExpr struct { + // A map or message creation expression. + StructExpr *Expr_CreateStruct `protobuf:"bytes,8,opt,name=struct_expr,json=structExpr,proto3,oneof"` +} + +type Expr_ComprehensionExpr struct { + // A comprehension expression. + ComprehensionExpr *Expr_Comprehension `protobuf:"bytes,9,opt,name=comprehension_expr,json=comprehensionExpr,proto3,oneof"` +} + +func (*Expr_ConstExpr) isExpr_ExprKind() {} + +func (*Expr_IdentExpr) isExpr_ExprKind() {} + +func (*Expr_SelectExpr) isExpr_ExprKind() {} + +func (*Expr_CallExpr) isExpr_ExprKind() {} + +func (*Expr_ListExpr) isExpr_ExprKind() {} + +func (*Expr_StructExpr) isExpr_ExprKind() {} + +func (*Expr_ComprehensionExpr) isExpr_ExprKind() {} + +// Represents a primitive literal. +// +// Named 'Constant' here for backwards compatibility. +// +// This is similar as the primitives supported in the well-known type +// `google.protobuf.Value`, but richer so it can represent CEL's full range of +// primitives. +// +// Lists and structs are not included as constants as these aggregate types may +// contain [Expr][google.api.expr.v1alpha1.Expr] elements which require +// evaluation and are thus not constant. +// +// Examples of literals include: `"hello"`, `b'bytes'`, `1u`, `4.2`, `-2`, +// `true`, `null`. +type Constant struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. The valid constant kinds. + // + // Types that are assignable to ConstantKind: + // + // *Constant_NullValue + // *Constant_BoolValue + // *Constant_Int64Value + // *Constant_Uint64Value + // *Constant_DoubleValue + // *Constant_StringValue + // *Constant_BytesValue + // *Constant_DurationValue + // *Constant_TimestampValue + ConstantKind isConstant_ConstantKind `protobuf_oneof:"constant_kind"` +} + +func (x *Constant) Reset() { + *x = Constant{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Constant) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Constant) ProtoMessage() {} + +func (x *Constant) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Constant.ProtoReflect.Descriptor instead. +func (*Constant) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{2} +} + +func (m *Constant) GetConstantKind() isConstant_ConstantKind { + if m != nil { + return m.ConstantKind + } + return nil +} + +func (x *Constant) GetNullValue() structpb.NullValue { + if x, ok := x.GetConstantKind().(*Constant_NullValue); ok { + return x.NullValue + } + return structpb.NullValue_NULL_VALUE +} + +func (x *Constant) GetBoolValue() bool { + if x, ok := x.GetConstantKind().(*Constant_BoolValue); ok { + return x.BoolValue + } + return false +} + +func (x *Constant) GetInt64Value() int64 { + if x, ok := x.GetConstantKind().(*Constant_Int64Value); ok { + return x.Int64Value + } + return 0 +} + +func (x *Constant) GetUint64Value() uint64 { + if x, ok := x.GetConstantKind().(*Constant_Uint64Value); ok { + return x.Uint64Value + } + return 0 +} + +func (x *Constant) GetDoubleValue() float64 { + if x, ok := x.GetConstantKind().(*Constant_DoubleValue); ok { + return x.DoubleValue + } + return 0 +} + +func (x *Constant) GetStringValue() string { + if x, ok := x.GetConstantKind().(*Constant_StringValue); ok { + return x.StringValue + } + return "" +} + +func (x *Constant) GetBytesValue() []byte { + if x, ok := x.GetConstantKind().(*Constant_BytesValue); ok { + return x.BytesValue + } + return nil +} + +// Deprecated: Do not use. +func (x *Constant) GetDurationValue() *durationpb.Duration { + if x, ok := x.GetConstantKind().(*Constant_DurationValue); ok { + return x.DurationValue + } + return nil +} + +// Deprecated: Do not use. +func (x *Constant) GetTimestampValue() *timestamppb.Timestamp { + if x, ok := x.GetConstantKind().(*Constant_TimestampValue); ok { + return x.TimestampValue + } + return nil +} + +type isConstant_ConstantKind interface { + isConstant_ConstantKind() +} + +type Constant_NullValue struct { + // null value. + NullValue structpb.NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Constant_BoolValue struct { + // boolean value. + BoolValue bool `protobuf:"varint,2,opt,name=bool_value,json=boolValue,proto3,oneof"` +} + +type Constant_Int64Value struct { + // int64 value. + Int64Value int64 `protobuf:"varint,3,opt,name=int64_value,json=int64Value,proto3,oneof"` +} + +type Constant_Uint64Value struct { + // uint64 value. + Uint64Value uint64 `protobuf:"varint,4,opt,name=uint64_value,json=uint64Value,proto3,oneof"` +} + +type Constant_DoubleValue struct { + // double value. + DoubleValue float64 `protobuf:"fixed64,5,opt,name=double_value,json=doubleValue,proto3,oneof"` +} + +type Constant_StringValue struct { + // string value. + StringValue string `protobuf:"bytes,6,opt,name=string_value,json=stringValue,proto3,oneof"` +} + +type Constant_BytesValue struct { + // bytes value. + BytesValue []byte `protobuf:"bytes,7,opt,name=bytes_value,json=bytesValue,proto3,oneof"` +} + +type Constant_DurationValue struct { + // protobuf.Duration value. + // + // Deprecated: duration is no longer considered a builtin cel type. + // + // Deprecated: Do not use. + DurationValue *durationpb.Duration `protobuf:"bytes,8,opt,name=duration_value,json=durationValue,proto3,oneof"` +} + +type Constant_TimestampValue struct { + // protobuf.Timestamp value. + // + // Deprecated: timestamp is no longer considered a builtin cel type. + // + // Deprecated: Do not use. + TimestampValue *timestamppb.Timestamp `protobuf:"bytes,9,opt,name=timestamp_value,json=timestampValue,proto3,oneof"` +} + +func (*Constant_NullValue) isConstant_ConstantKind() {} + +func (*Constant_BoolValue) isConstant_ConstantKind() {} + +func (*Constant_Int64Value) isConstant_ConstantKind() {} + +func (*Constant_Uint64Value) isConstant_ConstantKind() {} + +func (*Constant_DoubleValue) isConstant_ConstantKind() {} + +func (*Constant_StringValue) isConstant_ConstantKind() {} + +func (*Constant_BytesValue) isConstant_ConstantKind() {} + +func (*Constant_DurationValue) isConstant_ConstantKind() {} + +func (*Constant_TimestampValue) isConstant_ConstantKind() {} + +// Source information collected at parse time. +type SourceInfo struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The syntax version of the source, e.g. `cel1`. + SyntaxVersion string `protobuf:"bytes,1,opt,name=syntax_version,json=syntaxVersion,proto3" json:"syntax_version,omitempty"` + // The location name. All position information attached to an expression is + // relative to this location. + // + // The location could be a file, UI element, or similar. For example, + // `acme/app/AnvilPolicy.cel`. + Location string `protobuf:"bytes,2,opt,name=location,proto3" json:"location,omitempty"` + // Monotonically increasing list of code point offsets where newlines + // `\n` appear. + // + // The line number of a given position is the index `i` where for a given + // `id` the `line_offsets[i] < id_positions[id] < line_offsets[i+1]`. The + // column may be derivd from `id_positions[id] - line_offsets[i]`. + LineOffsets []int32 `protobuf:"varint,3,rep,packed,name=line_offsets,json=lineOffsets,proto3" json:"line_offsets,omitempty"` + // A map from the parse node id (e.g. `Expr.id`) to the code point offset + // within the source. + Positions map[int64]int32 `protobuf:"bytes,4,rep,name=positions,proto3" json:"positions,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"` + // A map from the parse node id where a macro replacement was made to the + // call `Expr` that resulted in a macro expansion. + // + // For example, `has(value.field)` is a function call that is replaced by a + // `test_only` field selection in the AST. Likewise, the call + // `list.exists(e, e > 10)` translates to a comprehension expression. The key + // in the map corresponds to the expression id of the expanded macro, and the + // value is the call `Expr` that was replaced. + MacroCalls map[int64]*Expr `protobuf:"bytes,5,rep,name=macro_calls,json=macroCalls,proto3" json:"macro_calls,omitempty" protobuf_key:"varint,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + // A list of tags for extensions that were used while parsing or type checking + // the source expression. For example, optimizations that require special + // runtime support may be specified. + // + // These are used to check feature support between components in separate + // implementations. This can be used to either skip redundant work or + // report an error if the extension is unsupported. + Extensions []*SourceInfo_Extension `protobuf:"bytes,6,rep,name=extensions,proto3" json:"extensions,omitempty"` +} + +func (x *SourceInfo) Reset() { + *x = SourceInfo{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourceInfo) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourceInfo) ProtoMessage() {} + +func (x *SourceInfo) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourceInfo.ProtoReflect.Descriptor instead. +func (*SourceInfo) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{3} +} + +func (x *SourceInfo) GetSyntaxVersion() string { + if x != nil { + return x.SyntaxVersion + } + return "" +} + +func (x *SourceInfo) GetLocation() string { + if x != nil { + return x.Location + } + return "" +} + +func (x *SourceInfo) GetLineOffsets() []int32 { + if x != nil { + return x.LineOffsets + } + return nil +} + +func (x *SourceInfo) GetPositions() map[int64]int32 { + if x != nil { + return x.Positions + } + return nil +} + +func (x *SourceInfo) GetMacroCalls() map[int64]*Expr { + if x != nil { + return x.MacroCalls + } + return nil +} + +func (x *SourceInfo) GetExtensions() []*SourceInfo_Extension { + if x != nil { + return x.Extensions + } + return nil +} + +// A specific position in source. +type SourcePosition struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The soucre location name (e.g. file name). + Location string `protobuf:"bytes,1,opt,name=location,proto3" json:"location,omitempty"` + // The UTF-8 code unit offset. + Offset int32 `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"` + // The 1-based index of the starting line in the source text + // where the issue occurs, or 0 if unknown. + Line int32 `protobuf:"varint,3,opt,name=line,proto3" json:"line,omitempty"` + // The 0-based index of the starting position within the line of source text + // where the issue occurs. Only meaningful if line is nonzero. + Column int32 `protobuf:"varint,4,opt,name=column,proto3" json:"column,omitempty"` +} + +func (x *SourcePosition) Reset() { + *x = SourcePosition{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourcePosition) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourcePosition) ProtoMessage() {} + +func (x *SourcePosition) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[4] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourcePosition.ProtoReflect.Descriptor instead. +func (*SourcePosition) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{4} +} + +func (x *SourcePosition) GetLocation() string { + if x != nil { + return x.Location + } + return "" +} + +func (x *SourcePosition) GetOffset() int32 { + if x != nil { + return x.Offset + } + return 0 +} + +func (x *SourcePosition) GetLine() int32 { + if x != nil { + return x.Line + } + return 0 +} + +func (x *SourcePosition) GetColumn() int32 { + if x != nil { + return x.Column + } + return 0 +} + +// An identifier expression. e.g. `request`. +type Expr_Ident struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. Holds a single, unqualified identifier, possibly preceded by a + // '.'. + // + // Qualified names are represented by the + // [Expr.Select][google.api.expr.v1alpha1.Expr.Select] expression. + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` +} + +func (x *Expr_Ident) Reset() { + *x = Expr_Ident{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[5] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Ident) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Ident) ProtoMessage() {} + +func (x *Expr_Ident) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[5] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Ident.ProtoReflect.Descriptor instead. +func (*Expr_Ident) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 0} +} + +func (x *Expr_Ident) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +// A field selection expression. e.g. `request.auth`. +type Expr_Select struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. The target of the selection expression. + // + // For example, in the select expression `request.auth`, the `request` + // portion of the expression is the `operand`. + Operand *Expr `protobuf:"bytes,1,opt,name=operand,proto3" json:"operand,omitempty"` + // Required. The name of the field to select. + // + // For example, in the select expression `request.auth`, the `auth` portion + // of the expression would be the `field`. + Field string `protobuf:"bytes,2,opt,name=field,proto3" json:"field,omitempty"` + // Whether the select is to be interpreted as a field presence test. + // + // This results from the macro `has(request.auth)`. + TestOnly bool `protobuf:"varint,3,opt,name=test_only,json=testOnly,proto3" json:"test_only,omitempty"` +} + +func (x *Expr_Select) Reset() { + *x = Expr_Select{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[6] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Select) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Select) ProtoMessage() {} + +func (x *Expr_Select) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[6] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Select.ProtoReflect.Descriptor instead. +func (*Expr_Select) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 1} +} + +func (x *Expr_Select) GetOperand() *Expr { + if x != nil { + return x.Operand + } + return nil +} + +func (x *Expr_Select) GetField() string { + if x != nil { + return x.Field + } + return "" +} + +func (x *Expr_Select) GetTestOnly() bool { + if x != nil { + return x.TestOnly + } + return false +} + +// A call expression, including calls to predefined functions and operators. +// +// For example, `value == 10`, `size(map_value)`. +type Expr_Call struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The target of an method call-style expression. For example, `x` in + // `x.f()`. + Target *Expr `protobuf:"bytes,1,opt,name=target,proto3" json:"target,omitempty"` + // Required. The name of the function or method being called. + Function string `protobuf:"bytes,2,opt,name=function,proto3" json:"function,omitempty"` + // The arguments. + Args []*Expr `protobuf:"bytes,3,rep,name=args,proto3" json:"args,omitempty"` +} + +func (x *Expr_Call) Reset() { + *x = Expr_Call{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[7] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Call) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Call) ProtoMessage() {} + +func (x *Expr_Call) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[7] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Call.ProtoReflect.Descriptor instead. +func (*Expr_Call) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 2} +} + +func (x *Expr_Call) GetTarget() *Expr { + if x != nil { + return x.Target + } + return nil +} + +func (x *Expr_Call) GetFunction() string { + if x != nil { + return x.Function + } + return "" +} + +func (x *Expr_Call) GetArgs() []*Expr { + if x != nil { + return x.Args + } + return nil +} + +// A list creation expression. +// +// Lists may either be homogenous, e.g. `[1, 2, 3]`, or heterogeneous, e.g. +// `dyn([1, 'hello', 2.0])` +type Expr_CreateList struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The elements part of the list. + Elements []*Expr `protobuf:"bytes,1,rep,name=elements,proto3" json:"elements,omitempty"` + // The indices within the elements list which are marked as optional + // elements. + // + // When an optional-typed value is present, the value it contains + // is included in the list. If the optional-typed value is absent, the list + // element is omitted from the CreateList result. + OptionalIndices []int32 `protobuf:"varint,2,rep,packed,name=optional_indices,json=optionalIndices,proto3" json:"optional_indices,omitempty"` +} + +func (x *Expr_CreateList) Reset() { + *x = Expr_CreateList{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[8] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_CreateList) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_CreateList) ProtoMessage() {} + +func (x *Expr_CreateList) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[8] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_CreateList.ProtoReflect.Descriptor instead. +func (*Expr_CreateList) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 3} +} + +func (x *Expr_CreateList) GetElements() []*Expr { + if x != nil { + return x.Elements + } + return nil +} + +func (x *Expr_CreateList) GetOptionalIndices() []int32 { + if x != nil { + return x.OptionalIndices + } + return nil +} + +// A map or message creation expression. +// +// Maps are constructed as `{'key_name': 'value'}`. Message construction is +// similar, but prefixed with a type name and composed of field ids: +// `types.MyType{field_id: 'value'}`. +type Expr_CreateStruct struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The type name of the message to be created, empty when creating map + // literals. + MessageName string `protobuf:"bytes,1,opt,name=message_name,json=messageName,proto3" json:"message_name,omitempty"` + // The entries in the creation expression. + Entries []*Expr_CreateStruct_Entry `protobuf:"bytes,2,rep,name=entries,proto3" json:"entries,omitempty"` +} + +func (x *Expr_CreateStruct) Reset() { + *x = Expr_CreateStruct{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[9] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_CreateStruct) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_CreateStruct) ProtoMessage() {} + +func (x *Expr_CreateStruct) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[9] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_CreateStruct.ProtoReflect.Descriptor instead. +func (*Expr_CreateStruct) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 4} +} + +func (x *Expr_CreateStruct) GetMessageName() string { + if x != nil { + return x.MessageName + } + return "" +} + +func (x *Expr_CreateStruct) GetEntries() []*Expr_CreateStruct_Entry { + if x != nil { + return x.Entries + } + return nil +} + +// A comprehension expression applied to a list or map. +// +// Comprehensions are not part of the core syntax, but enabled with macros. +// A macro matches a specific call signature within a parsed AST and replaces +// the call with an alternate AST block. Macro expansion happens at parse +// time. +// +// The following macros are supported within CEL: +// +// Aggregate type macros may be applied to all elements in a list or all keys +// in a map: +// +// - `all`, `exists`, `exists_one` - test a predicate expression against +// the inputs and return `true` if the predicate is satisfied for all, +// any, or only one value `list.all(x, x < 10)`. +// - `filter` - test a predicate expression against the inputs and return +// the subset of elements which satisfy the predicate: +// `payments.filter(p, p > 1000)`. +// - `map` - apply an expression to all elements in the input and return the +// output aggregate type: `[1, 2, 3].map(i, i * i)`. +// +// The `has(m.x)` macro tests whether the property `x` is present in struct +// `m`. The semantics of this macro depend on the type of `m`. For proto2 +// messages `has(m.x)` is defined as 'defined, but not set`. For proto3, the +// macro tests whether the property is set to its default. For map and struct +// types, the macro tests whether the property `x` is defined on `m`. +// +// Comprehensions for the standard environment macros evaluation can be best +// visualized as the following pseudocode: +// +// ``` +// let `accu_var` = `accu_init` +// +// for (let `iter_var` in `iter_range`) { +// if (!`loop_condition`) { +// break +// } +// `accu_var` = `loop_step` +// } +// +// return `result` +// ``` +// +// Comprehensions for the optional V2 macros which support map-to-map +// translation differ slightly from the standard environment macros in that +// they expose both the key or index in addition to the value for each list +// or map entry: +// +// ``` +// let `accu_var` = `accu_init` +// +// for (let `iter_var`, `iter_var2` in `iter_range`) { +// if (!`loop_condition`) { +// break +// } +// `accu_var` = `loop_step` +// } +// +// return `result` +// ``` +type Expr_Comprehension struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The name of the first iteration variable. + // When the iter_range is a list, this variable is the list element. + // When the iter_range is a map, this variable is the map entry key. + IterVar string `protobuf:"bytes,1,opt,name=iter_var,json=iterVar,proto3" json:"iter_var,omitempty"` + // The name of the second iteration variable, empty if not set. + // When the iter_range is a list, this variable is the integer index. + // When the iter_range is a map, this variable is the map entry value. + // This field is only set for comprehension v2 macros. + IterVar2 string `protobuf:"bytes,8,opt,name=iter_var2,json=iterVar2,proto3" json:"iter_var2,omitempty"` + // The range over which the comprehension iterates. + IterRange *Expr `protobuf:"bytes,2,opt,name=iter_range,json=iterRange,proto3" json:"iter_range,omitempty"` + // The name of the variable used for accumulation of the result. + AccuVar string `protobuf:"bytes,3,opt,name=accu_var,json=accuVar,proto3" json:"accu_var,omitempty"` + // The initial value of the accumulator. + AccuInit *Expr `protobuf:"bytes,4,opt,name=accu_init,json=accuInit,proto3" json:"accu_init,omitempty"` + // An expression which can contain iter_var, iter_var2, and accu_var. + // + // Returns false when the result has been computed and may be used as + // a hint to short-circuit the remainder of the comprehension. + LoopCondition *Expr `protobuf:"bytes,5,opt,name=loop_condition,json=loopCondition,proto3" json:"loop_condition,omitempty"` + // An expression which can contain iter_var, iter_var2, and accu_var. + // + // Computes the next value of accu_var. + LoopStep *Expr `protobuf:"bytes,6,opt,name=loop_step,json=loopStep,proto3" json:"loop_step,omitempty"` + // An expression which can contain accu_var. + // + // Computes the result. + Result *Expr `protobuf:"bytes,7,opt,name=result,proto3" json:"result,omitempty"` +} + +func (x *Expr_Comprehension) Reset() { + *x = Expr_Comprehension{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[10] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_Comprehension) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_Comprehension) ProtoMessage() {} + +func (x *Expr_Comprehension) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[10] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_Comprehension.ProtoReflect.Descriptor instead. +func (*Expr_Comprehension) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 5} +} + +func (x *Expr_Comprehension) GetIterVar() string { + if x != nil { + return x.IterVar + } + return "" +} + +func (x *Expr_Comprehension) GetIterVar2() string { + if x != nil { + return x.IterVar2 + } + return "" +} + +func (x *Expr_Comprehension) GetIterRange() *Expr { + if x != nil { + return x.IterRange + } + return nil +} + +func (x *Expr_Comprehension) GetAccuVar() string { + if x != nil { + return x.AccuVar + } + return "" +} + +func (x *Expr_Comprehension) GetAccuInit() *Expr { + if x != nil { + return x.AccuInit + } + return nil +} + +func (x *Expr_Comprehension) GetLoopCondition() *Expr { + if x != nil { + return x.LoopCondition + } + return nil +} + +func (x *Expr_Comprehension) GetLoopStep() *Expr { + if x != nil { + return x.LoopStep + } + return nil +} + +func (x *Expr_Comprehension) GetResult() *Expr { + if x != nil { + return x.Result + } + return nil +} + +// Represents an entry. +type Expr_CreateStruct_Entry struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. An id assigned to this node by the parser which is unique + // in a given expression tree. This is used to associate type + // information and other attributes to the node. + Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"` + // The `Entry` key kinds. + // + // Types that are assignable to KeyKind: + // + // *Expr_CreateStruct_Entry_FieldKey + // *Expr_CreateStruct_Entry_MapKey + KeyKind isExpr_CreateStruct_Entry_KeyKind `protobuf_oneof:"key_kind"` + // Required. The value assigned to the key. + // + // If the optional_entry field is true, the expression must resolve to an + // optional-typed value. If the optional value is present, the key will be + // set; however, if the optional value is absent, the key will be unset. + Value *Expr `protobuf:"bytes,4,opt,name=value,proto3" json:"value,omitempty"` + // Whether the key-value pair is optional. + OptionalEntry bool `protobuf:"varint,5,opt,name=optional_entry,json=optionalEntry,proto3" json:"optional_entry,omitempty"` +} + +func (x *Expr_CreateStruct_Entry) Reset() { + *x = Expr_CreateStruct_Entry{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[11] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Expr_CreateStruct_Entry) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Expr_CreateStruct_Entry) ProtoMessage() {} + +func (x *Expr_CreateStruct_Entry) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[11] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Expr_CreateStruct_Entry.ProtoReflect.Descriptor instead. +func (*Expr_CreateStruct_Entry) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{1, 4, 0} +} + +func (x *Expr_CreateStruct_Entry) GetId() int64 { + if x != nil { + return x.Id + } + return 0 +} + +func (m *Expr_CreateStruct_Entry) GetKeyKind() isExpr_CreateStruct_Entry_KeyKind { + if m != nil { + return m.KeyKind + } + return nil +} + +func (x *Expr_CreateStruct_Entry) GetFieldKey() string { + if x, ok := x.GetKeyKind().(*Expr_CreateStruct_Entry_FieldKey); ok { + return x.FieldKey + } + return "" +} + +func (x *Expr_CreateStruct_Entry) GetMapKey() *Expr { + if x, ok := x.GetKeyKind().(*Expr_CreateStruct_Entry_MapKey); ok { + return x.MapKey + } + return nil +} + +func (x *Expr_CreateStruct_Entry) GetValue() *Expr { + if x != nil { + return x.Value + } + return nil +} + +func (x *Expr_CreateStruct_Entry) GetOptionalEntry() bool { + if x != nil { + return x.OptionalEntry + } + return false +} + +type isExpr_CreateStruct_Entry_KeyKind interface { + isExpr_CreateStruct_Entry_KeyKind() +} + +type Expr_CreateStruct_Entry_FieldKey struct { + // The field key for a message creator statement. + FieldKey string `protobuf:"bytes,2,opt,name=field_key,json=fieldKey,proto3,oneof"` +} + +type Expr_CreateStruct_Entry_MapKey struct { + // The key expression for a map creation statement. + MapKey *Expr `protobuf:"bytes,3,opt,name=map_key,json=mapKey,proto3,oneof"` +} + +func (*Expr_CreateStruct_Entry_FieldKey) isExpr_CreateStruct_Entry_KeyKind() {} + +func (*Expr_CreateStruct_Entry_MapKey) isExpr_CreateStruct_Entry_KeyKind() {} + +// An extension that was requested for the source expression. +type SourceInfo_Extension struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Identifier for the extension. Example: constant_folding + Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"` + // If set, the listed components must understand the extension for the + // expression to evaluate correctly. + // + // This field has set semantics, repeated values should be deduplicated. + AffectedComponents []SourceInfo_Extension_Component `protobuf:"varint,2,rep,packed,name=affected_components,json=affectedComponents,proto3,enum=google.api.expr.v1alpha1.SourceInfo_Extension_Component" json:"affected_components,omitempty"` + // Version info. May be skipped if it isn't meaningful for the extension. + // (for example constant_folding might always be v0.0). + Version *SourceInfo_Extension_Version `protobuf:"bytes,3,opt,name=version,proto3" json:"version,omitempty"` +} + +func (x *SourceInfo_Extension) Reset() { + *x = SourceInfo_Extension{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[12] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourceInfo_Extension) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourceInfo_Extension) ProtoMessage() {} + +func (x *SourceInfo_Extension) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[12] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourceInfo_Extension.ProtoReflect.Descriptor instead. +func (*SourceInfo_Extension) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{3, 0} +} + +func (x *SourceInfo_Extension) GetId() string { + if x != nil { + return x.Id + } + return "" +} + +func (x *SourceInfo_Extension) GetAffectedComponents() []SourceInfo_Extension_Component { + if x != nil { + return x.AffectedComponents + } + return nil +} + +func (x *SourceInfo_Extension) GetVersion() *SourceInfo_Extension_Version { + if x != nil { + return x.Version + } + return nil +} + +// Version +type SourceInfo_Extension_Version struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Major version changes indicate different required support level from + // the required components. + Major int64 `protobuf:"varint,1,opt,name=major,proto3" json:"major,omitempty"` + // Minor version changes must not change the observed behavior from + // existing implementations, but may be provided informationally. + Minor int64 `protobuf:"varint,2,opt,name=minor,proto3" json:"minor,omitempty"` +} + +func (x *SourceInfo_Extension_Version) Reset() { + *x = SourceInfo_Extension_Version{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[15] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *SourceInfo_Extension_Version) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*SourceInfo_Extension_Version) ProtoMessage() {} + +func (x *SourceInfo_Extension_Version) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_syntax_proto_msgTypes[15] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use SourceInfo_Extension_Version.ProtoReflect.Descriptor instead. +func (*SourceInfo_Extension_Version) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP(), []int{3, 0, 0} +} + +func (x *SourceInfo_Extension_Version) GetMajor() int64 { + if x != nil { + return x.Major + } + return 0 +} + +func (x *SourceInfo_Extension_Version) GetMinor() int64 { + if x != nil { + return x.Minor + } + return 0 +} + +var File_google_api_expr_v1alpha1_syntax_proto protoreflect.FileDescriptor + +var file_google_api_expr_v1alpha1_syntax_proto_rawDesc = []byte{ + 0x0a, 0x25, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x65, 0x78, 0x70, + 0x72, 0x2f, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0x2f, 0x73, 0x79, 0x6e, 0x74, 0x61, + 0x78, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x18, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, + 0x61, 0x70, 0x69, 0x2e, 0x65, 0x78, 0x70, 0x72, 0x2e, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, + 0x31, 0x1a, 0x1e, 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file_google_api_expr_v1alpha1_syntax_proto_rawDescData = file_google_api_expr_v1alpha1_syntax_proto_rawDesc +) + +func file_google_api_expr_v1alpha1_syntax_proto_rawDescGZIP() []byte { + file_google_api_expr_v1alpha1_syntax_proto_rawDescOnce.Do(func() { + file_google_api_expr_v1alpha1_syntax_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_api_expr_v1alpha1_syntax_proto_rawDescData) + }) + return file_google_api_expr_v1alpha1_syntax_proto_rawDescData +} + +var file_google_api_expr_v1alpha1_syntax_proto_enumTypes = make([]protoimpl.EnumInfo, 1) +var file_google_api_expr_v1alpha1_syntax_proto_msgTypes = make([]protoimpl.MessageInfo, 16) +var file_google_api_expr_v1alpha1_syntax_proto_goTypes = []interface{}{ + (SourceInfo_Extension_Component)(0), // 0: google.api.expr.v1alpha1.SourceInfo.Extension.Component + (*ParsedExpr)(nil), // 1: google.api.expr.v1alpha1.ParsedExpr + (*Expr)(nil), // 2: google.api.expr.v1alpha1.Expr + (*Constant)(nil), // 3: google.api.expr.v1alpha1.Constant + (*SourceInfo)(nil), // 4: google.api.expr.v1alpha1.SourceInfo + (*SourcePosition)(nil), // 5: google.api.expr.v1alpha1.SourcePosition + (*Expr_Ident)(nil), // 6: google.api.expr.v1alpha1.Expr.Ident + (*Expr_Select)(nil), // 7: google.api.expr.v1alpha1.Expr.Select + (*Expr_Call)(nil), // 8: google.api.expr.v1alpha1.Expr.Call + (*Expr_CreateList)(nil), // 9: google.api.expr.v1alpha1.Expr.CreateList + (*Expr_CreateStruct)(nil), // 10: google.api.expr.v1alpha1.Expr.CreateStruct + (*Expr_Comprehension)(nil), // 11: google.api.expr.v1alpha1.Expr.Comprehension + (*Expr_CreateStruct_Entry)(nil), // 12: google.api.expr.v1alpha1.Expr.CreateStruct.Entry + (*SourceInfo_Extension)(nil), // 13: google.api.expr.v1alpha1.SourceInfo.Extension + nil, // 14: google.api.expr.v1alpha1.SourceInfo.PositionsEntry + nil, // 15: google.api.expr.v1alpha1.SourceInfo.MacroCallsEntry + (*SourceInfo_Extension_Version)(nil), // 16: google.api.expr.v1alpha1.SourceInfo.Extension.Version + (structpb.NullValue)(0), // 17: google.protobuf.NullValue + (*durationpb.Duration)(nil), // 18: google.protobuf.Duration + (*timestamppb.Timestamp)(nil), // 19: google.protobuf.Timestamp +} +var file_google_api_expr_v1alpha1_syntax_proto_depIdxs = []int32{ + 2, // 0: google.api.expr.v1alpha1.ParsedExpr.expr:type_name -> google.api.expr.v1alpha1.Expr + 4, // 1: google.api.expr.v1alpha1.ParsedExpr.source_info:type_name -> google.api.expr.v1alpha1.SourceInfo + 3, // 2: google.api.expr.v1alpha1.Expr.const_expr:type_name -> google.api.expr.v1alpha1.Constant + 6, // 3: google.api.expr.v1alpha1.Expr.ident_expr:type_name -> google.api.expr.v1alpha1.Expr.Ident + 7, // 4: google.api.expr.v1alpha1.Expr.select_expr:type_name -> google.api.expr.v1alpha1.Expr.Select + 8, // 5: google.api.expr.v1alpha1.Expr.call_expr:type_name -> google.api.expr.v1alpha1.Expr.Call + 9, // 6: google.api.expr.v1alpha1.Expr.list_expr:type_name -> google.api.expr.v1alpha1.Expr.CreateList + 10, // 7: google.api.expr.v1alpha1.Expr.struct_expr:type_name -> google.api.expr.v1alpha1.Expr.CreateStruct + 11, // 8: google.api.expr.v1alpha1.Expr.comprehension_expr:type_name -> google.api.expr.v1alpha1.Expr.Comprehension + 17, // 9: google.api.expr.v1alpha1.Constant.null_value:type_name -> google.protobuf.NullValue + 18, // 10: google.api.expr.v1alpha1.Constant.duration_value:type_name -> google.protobuf.Duration + 19, // 11: google.api.expr.v1alpha1.Constant.timestamp_value:type_name -> google.protobuf.Timestamp + 14, // 12: google.api.expr.v1alpha1.SourceInfo.positions:type_name -> google.api.expr.v1alpha1.SourceInfo.PositionsEntry + 15, // 13: google.api.expr.v1alpha1.SourceInfo.macro_calls:type_name -> google.api.expr.v1alpha1.SourceInfo.MacroCallsEntry + 13, // 14: google.api.expr.v1alpha1.SourceInfo.extensions:type_name -> google.api.expr.v1alpha1.SourceInfo.Extension + 2, // 15: google.api.expr.v1alpha1.Expr.Select.operand:type_name -> google.api.expr.v1alpha1.Expr + 2, // 16: google.api.expr.v1alpha1.Expr.Call.target:type_name -> google.api.expr.v1alpha1.Expr + 2, // 17: google.api.expr.v1alpha1.Expr.Call.args:type_name -> google.api.expr.v1alpha1.Expr + 2, // 18: google.api.expr.v1alpha1.Expr.CreateList.elements:type_name -> google.api.expr.v1alpha1.Expr + 12, // 19: google.api.expr.v1alpha1.Expr.CreateStruct.entries:type_name -> google.api.expr.v1alpha1.Expr.CreateStruct.Entry + 2, // 20: google.api.expr.v1alpha1.Expr.Comprehension.iter_range:type_name -> google.api.expr.v1alpha1.Expr + 2, // 21: google.api.expr.v1alpha1.Expr.Comprehension.accu_init:type_name -> google.api.expr.v1alpha1.Expr + 2, // 22: google.api.expr.v1alpha1.Expr.Comprehension.loop_condition:type_name -> google.api.expr.v1alpha1.Expr + 2, // 23: google.api.expr.v1alpha1.Expr.Comprehension.loop_step:type_name -> google.api.expr.v1alpha1.Expr + 2, // 24: google.api.expr.v1alpha1.Expr.Comprehension.result:type_name -> google.api.expr.v1alpha1.Expr + 2, // 25: google.api.expr.v1alpha1.Expr.CreateStruct.Entry.map_key:type_name -> google.api.expr.v1alpha1.Expr + 2, // 26: google.api.expr.v1alpha1.Expr.CreateStruct.Entry.value:type_name -> google.api.expr.v1alpha1.Expr + 0, // 27: google.api.expr.v1alpha1.SourceInfo.Extension.affected_components:type_name -> google.api.expr.v1alpha1.SourceInfo.Extension.Component + 16, // 28: google.api.expr.v1alpha1.SourceInfo.Extension.version:type_name -> google.api.expr.v1alpha1.SourceInfo.Extension.Version + 2, // 29: google.api.expr.v1alpha1.SourceInfo.MacroCallsEntry.value:type_name -> google.api.expr.v1alpha1.Expr + 30, // [30:30] is the sub-list for method output_type + 30, // [30:30] is the sub-list for method input_type + 30, // [30:30] is the sub-list for extension type_name + 30, // [30:30] is the sub-list for extension extendee + 0, // [0:30] is the sub-list for field type_name +} + +func init() { file_google_api_expr_v1alpha1_syntax_proto_init() } +func file_google_api_expr_v1alpha1_syntax_proto_init() { + if File_google_api_expr_v1alpha1_syntax_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ParsedExpr); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Constant); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourceInfo); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourcePosition); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Ident); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Select); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Call); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_CreateList); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_CreateStruct); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_Comprehension); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Expr_CreateStruct_Entry); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourceInfo_Extension); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*SourceInfo_Extension_Version); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[1].OneofWrappers = []interface{}{ + (*Expr_ConstExpr)(nil), + (*Expr_IdentExpr)(nil), + (*Expr_SelectExpr)(nil), + (*Expr_CallExpr)(nil), + (*Expr_ListExpr)(nil), + (*Expr_StructExpr)(nil), + (*Expr_ComprehensionExpr)(nil), + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[2].OneofWrappers = []interface{}{ + (*Constant_NullValue)(nil), + (*Constant_BoolValue)(nil), + (*Constant_Int64Value)(nil), + (*Constant_Uint64Value)(nil), + (*Constant_DoubleValue)(nil), + (*Constant_StringValue)(nil), + (*Constant_BytesValue)(nil), + (*Constant_DurationValue)(nil), + (*Constant_TimestampValue)(nil), + } + file_google_api_expr_v1alpha1_syntax_proto_msgTypes[11].OneofWrappers = []interface{}{ + (*Expr_CreateStruct_Entry_FieldKey)(nil), + (*Expr_CreateStruct_Entry_MapKey)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_google_api_expr_v1alpha1_syntax_proto_rawDesc, + NumEnums: 1, + NumMessages: 16, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_api_expr_v1alpha1_syntax_proto_goTypes, + DependencyIndexes: file_google_api_expr_v1alpha1_syntax_proto_depIdxs, + EnumInfos: file_google_api_expr_v1alpha1_syntax_proto_enumTypes, + MessageInfos: file_google_api_expr_v1alpha1_syntax_proto_msgTypes, + }.Build() + File_google_api_expr_v1alpha1_syntax_proto = out.File + file_google_api_expr_v1alpha1_syntax_proto_rawDesc = nil + file_google_api_expr_v1alpha1_syntax_proto_goTypes = nil + file_google_api_expr_v1alpha1_syntax_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/value.pb.go b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/value.pb.go new file mode 100644 index 0000000000..0a5ca6a1b9 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/api/expr/v1alpha1/value.pb.go @@ -0,0 +1,721 @@ +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.26.0 +// protoc v4.24.4 +// source: google/api/expr/v1alpha1/value.proto + +package expr + +import ( + reflect "reflect" + sync "sync" + + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + anypb "google.golang.org/protobuf/types/known/anypb" + structpb "google.golang.org/protobuf/types/known/structpb" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// Represents a CEL value. +// +// This is similar to `google.protobuf.Value`, but can represent CEL's full +// range of values. +type Value struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Required. The valid kinds of values. + // + // Types that are assignable to Kind: + // + // *Value_NullValue + // *Value_BoolValue + // *Value_Int64Value + // *Value_Uint64Value + // *Value_DoubleValue + // *Value_StringValue + // *Value_BytesValue + // *Value_EnumValue + // *Value_ObjectValue + // *Value_MapValue + // *Value_ListValue + // *Value_TypeValue + Kind isValue_Kind `protobuf_oneof:"kind"` +} + +func (x *Value) Reset() { + *x = Value{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Value) ProtoMessage() {} + +func (x *Value) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Value.ProtoReflect.Descriptor instead. +func (*Value) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_value_proto_rawDescGZIP(), []int{0} +} + +func (m *Value) GetKind() isValue_Kind { + if m != nil { + return m.Kind + } + return nil +} + +func (x *Value) GetNullValue() structpb.NullValue { + if x, ok := x.GetKind().(*Value_NullValue); ok { + return x.NullValue + } + return structpb.NullValue_NULL_VALUE +} + +func (x *Value) GetBoolValue() bool { + if x, ok := x.GetKind().(*Value_BoolValue); ok { + return x.BoolValue + } + return false +} + +func (x *Value) GetInt64Value() int64 { + if x, ok := x.GetKind().(*Value_Int64Value); ok { + return x.Int64Value + } + return 0 +} + +func (x *Value) GetUint64Value() uint64 { + if x, ok := x.GetKind().(*Value_Uint64Value); ok { + return x.Uint64Value + } + return 0 +} + +func (x *Value) GetDoubleValue() float64 { + if x, ok := x.GetKind().(*Value_DoubleValue); ok { + return x.DoubleValue + } + return 0 +} + +func (x *Value) GetStringValue() string { + if x, ok := x.GetKind().(*Value_StringValue); ok { + return x.StringValue + } + return "" +} + +func (x *Value) GetBytesValue() []byte { + if x, ok := x.GetKind().(*Value_BytesValue); ok { + return x.BytesValue + } + return nil +} + +func (x *Value) GetEnumValue() *EnumValue { + if x, ok := x.GetKind().(*Value_EnumValue); ok { + return x.EnumValue + } + return nil +} + +func (x *Value) GetObjectValue() *anypb.Any { + if x, ok := x.GetKind().(*Value_ObjectValue); ok { + return x.ObjectValue + } + return nil +} + +func (x *Value) GetMapValue() *MapValue { + if x, ok := x.GetKind().(*Value_MapValue); ok { + return x.MapValue + } + return nil +} + +func (x *Value) GetListValue() *ListValue { + if x, ok := x.GetKind().(*Value_ListValue); ok { + return x.ListValue + } + return nil +} + +func (x *Value) GetTypeValue() string { + if x, ok := x.GetKind().(*Value_TypeValue); ok { + return x.TypeValue + } + return "" +} + +type isValue_Kind interface { + isValue_Kind() +} + +type Value_NullValue struct { + // Null value. + NullValue structpb.NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Value_BoolValue struct { + // Boolean value. + BoolValue bool `protobuf:"varint,2,opt,name=bool_value,json=boolValue,proto3,oneof"` +} + +type Value_Int64Value struct { + // Signed integer value. + Int64Value int64 `protobuf:"varint,3,opt,name=int64_value,json=int64Value,proto3,oneof"` +} + +type Value_Uint64Value struct { + // Unsigned integer value. + Uint64Value uint64 `protobuf:"varint,4,opt,name=uint64_value,json=uint64Value,proto3,oneof"` +} + +type Value_DoubleValue struct { + // Floating point value. + DoubleValue float64 `protobuf:"fixed64,5,opt,name=double_value,json=doubleValue,proto3,oneof"` +} + +type Value_StringValue struct { + // UTF-8 string value. + StringValue string `protobuf:"bytes,6,opt,name=string_value,json=stringValue,proto3,oneof"` +} + +type Value_BytesValue struct { + // Byte string value. + BytesValue []byte `protobuf:"bytes,7,opt,name=bytes_value,json=bytesValue,proto3,oneof"` +} + +type Value_EnumValue struct { + // An enum value. + EnumValue *EnumValue `protobuf:"bytes,9,opt,name=enum_value,json=enumValue,proto3,oneof"` +} + +type Value_ObjectValue struct { + // The proto message backing an object value. + ObjectValue *anypb.Any `protobuf:"bytes,10,opt,name=object_value,json=objectValue,proto3,oneof"` +} + +type Value_MapValue struct { + // Map value. + MapValue *MapValue `protobuf:"bytes,11,opt,name=map_value,json=mapValue,proto3,oneof"` +} + +type Value_ListValue struct { + // List value. + ListValue *ListValue `protobuf:"bytes,12,opt,name=list_value,json=listValue,proto3,oneof"` +} + +type Value_TypeValue struct { + // Type value. + TypeValue string `protobuf:"bytes,15,opt,name=type_value,json=typeValue,proto3,oneof"` +} + +func (*Value_NullValue) isValue_Kind() {} + +func (*Value_BoolValue) isValue_Kind() {} + +func (*Value_Int64Value) isValue_Kind() {} + +func (*Value_Uint64Value) isValue_Kind() {} + +func (*Value_DoubleValue) isValue_Kind() {} + +func (*Value_StringValue) isValue_Kind() {} + +func (*Value_BytesValue) isValue_Kind() {} + +func (*Value_EnumValue) isValue_Kind() {} + +func (*Value_ObjectValue) isValue_Kind() {} + +func (*Value_MapValue) isValue_Kind() {} + +func (*Value_ListValue) isValue_Kind() {} + +func (*Value_TypeValue) isValue_Kind() {} + +// An enum value. +type EnumValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The fully qualified name of the enum type. + Type string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"` + // The value of the enum. + Value int32 `protobuf:"varint,2,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *EnumValue) Reset() { + *x = EnumValue{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *EnumValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*EnumValue) ProtoMessage() {} + +func (x *EnumValue) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use EnumValue.ProtoReflect.Descriptor instead. +func (*EnumValue) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_value_proto_rawDescGZIP(), []int{1} +} + +func (x *EnumValue) GetType() string { + if x != nil { + return x.Type + } + return "" +} + +func (x *EnumValue) GetValue() int32 { + if x != nil { + return x.Value + } + return 0 +} + +// A list. +// +// Wrapped in a message so 'not set' and empty can be differentiated, which is +// required for use in a 'oneof'. +type ListValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The ordered values in the list. + Values []*Value `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` +} + +func (x *ListValue) Reset() { + *x = ListValue{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ListValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ListValue) ProtoMessage() {} + +func (x *ListValue) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ListValue.ProtoReflect.Descriptor instead. +func (*ListValue) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_value_proto_rawDescGZIP(), []int{2} +} + +func (x *ListValue) GetValues() []*Value { + if x != nil { + return x.Values + } + return nil +} + +// A map. +// +// Wrapped in a message so 'not set' and empty can be differentiated, which is +// required for use in a 'oneof'. +type MapValue struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The set of map entries. + // + // CEL has fewer restrictions on keys, so a protobuf map represenation + // cannot be used. + Entries []*MapValue_Entry `protobuf:"bytes,1,rep,name=entries,proto3" json:"entries,omitempty"` +} + +func (x *MapValue) Reset() { + *x = MapValue{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *MapValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*MapValue) ProtoMessage() {} + +func (x *MapValue) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use MapValue.ProtoReflect.Descriptor instead. +func (*MapValue) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_value_proto_rawDescGZIP(), []int{3} +} + +func (x *MapValue) GetEntries() []*MapValue_Entry { + if x != nil { + return x.Entries + } + return nil +} + +// An entry in the map. +type MapValue_Entry struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The key. + // + // Must be unique with in the map. + // Currently only boolean, int, uint, and string values can be keys. + Key *Value `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"` + // The value. + Value *Value `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"` +} + +func (x *MapValue_Entry) Reset() { + *x = MapValue_Entry{} + if protoimpl.UnsafeEnabled { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *MapValue_Entry) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*MapValue_Entry) ProtoMessage() {} + +func (x *MapValue_Entry) ProtoReflect() protoreflect.Message { + mi := &file_google_api_expr_v1alpha1_value_proto_msgTypes[4] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use MapValue_Entry.ProtoReflect.Descriptor instead. +func (*MapValue_Entry) Descriptor() ([]byte, []int) { + return file_google_api_expr_v1alpha1_value_proto_rawDescGZIP(), []int{3, 0} +} + +func (x *MapValue_Entry) GetKey() *Value { + if x != nil { + return x.Key + } + return nil +} + +func (x *MapValue_Entry) GetValue() *Value { + if x != nil { + return x.Value + } + return nil +} + +var File_google_api_expr_v1alpha1_value_proto protoreflect.FileDescriptor + +var file_google_api_expr_v1alpha1_value_proto_rawDesc = []byte{ + 0x0a, 0x24, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x65, 0x78, 0x70, + 0x72, 0x2f, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0x2f, 0x76, 0x61, 0x6c, 0x75, 0x65, + 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x18, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x61, 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file_google_api_expr_v1alpha1_value_proto_rawDescGZIP() []byte { + file_google_api_expr_v1alpha1_value_proto_rawDescOnce.Do(func() { + file_google_api_expr_v1alpha1_value_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_api_expr_v1alpha1_value_proto_rawDescData) + }) + return file_google_api_expr_v1alpha1_value_proto_rawDescData +} + +var file_google_api_expr_v1alpha1_value_proto_msgTypes = make([]protoimpl.MessageInfo, 5) +var file_google_api_expr_v1alpha1_value_proto_goTypes = []interface{}{ + (*Value)(nil), // 0: google.api.expr.v1alpha1.Value + (*EnumValue)(nil), // 1: google.api.expr.v1alpha1.EnumValue + (*ListValue)(nil), // 2: google.api.expr.v1alpha1.ListValue + (*MapValue)(nil), // 3: google.api.expr.v1alpha1.MapValue + (*MapValue_Entry)(nil), // 4: google.api.expr.v1alpha1.MapValue.Entry + (structpb.NullValue)(0), // 5: google.protobuf.NullValue + (*anypb.Any)(nil), // 6: google.protobuf.Any +} +var file_google_api_expr_v1alpha1_value_proto_depIdxs = []int32{ + 5, // 0: google.api.expr.v1alpha1.Value.null_value:type_name -> google.protobuf.NullValue + 1, // 1: google.api.expr.v1alpha1.Value.enum_value:type_name -> google.api.expr.v1alpha1.EnumValue + 6, // 2: google.api.expr.v1alpha1.Value.object_value:type_name -> google.protobuf.Any + 3, // 3: google.api.expr.v1alpha1.Value.map_value:type_name -> google.api.expr.v1alpha1.MapValue + 2, // 4: google.api.expr.v1alpha1.Value.list_value:type_name -> google.api.expr.v1alpha1.ListValue + 0, // 5: google.api.expr.v1alpha1.ListValue.values:type_name -> google.api.expr.v1alpha1.Value + 4, // 6: google.api.expr.v1alpha1.MapValue.entries:type_name -> google.api.expr.v1alpha1.MapValue.Entry + 0, // 7: google.api.expr.v1alpha1.MapValue.Entry.key:type_name -> google.api.expr.v1alpha1.Value + 0, // 8: google.api.expr.v1alpha1.MapValue.Entry.value:type_name -> google.api.expr.v1alpha1.Value + 9, // [9:9] is the sub-list for method output_type + 9, // [9:9] is the sub-list for method input_type + 9, // [9:9] is the sub-list for extension type_name + 9, // [9:9] is the sub-list for extension extendee + 0, // [0:9] is the sub-list for field type_name +} + +func init() { file_google_api_expr_v1alpha1_value_proto_init() } +func file_google_api_expr_v1alpha1_value_proto_init() { + if File_google_api_expr_v1alpha1_value_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_google_api_expr_v1alpha1_value_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Value); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_value_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*EnumValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_value_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ListValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_value_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*MapValue); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_google_api_expr_v1alpha1_value_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*MapValue_Entry); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_google_api_expr_v1alpha1_value_proto_msgTypes[0].OneofWrappers = []interface{}{ + (*Value_NullValue)(nil), + (*Value_BoolValue)(nil), + (*Value_Int64Value)(nil), + (*Value_Uint64Value)(nil), + (*Value_DoubleValue)(nil), + (*Value_StringValue)(nil), + (*Value_BytesValue)(nil), + (*Value_EnumValue)(nil), + (*Value_ObjectValue)(nil), + (*Value_MapValue)(nil), + (*Value_ListValue)(nil), + (*Value_TypeValue)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_google_api_expr_v1alpha1_value_proto_rawDesc, + NumEnums: 0, + NumMessages: 5, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_api_expr_v1alpha1_value_proto_goTypes, + DependencyIndexes: file_google_api_expr_v1alpha1_value_proto_depIdxs, + MessageInfos: file_google_api_expr_v1alpha1_value_proto_msgTypes, + }.Build() + File_google_api_expr_v1alpha1_value_proto = out.File + file_google_api_expr_v1alpha1_value_proto_rawDesc = nil + file_google_api_expr_v1alpha1_value_proto_goTypes = nil + file_google_api_expr_v1alpha1_value_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/genproto/googleapis/rpc/LICENSE b/vendor/google.golang.org/genproto/googleapis/rpc/LICENSE new file mode 100644 index 0000000000..d645695673 --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/rpc/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. 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The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go new file mode 100644 index 0000000000..6ad1b1c1df --- /dev/null +++ b/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go @@ -0,0 +1,203 @@ +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.26.0 +// protoc v4.24.4 +// source: google/rpc/status.proto + +package status + +import ( + reflect "reflect" + sync "sync" + + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + anypb "google.golang.org/protobuf/types/known/anypb" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// The `Status` type defines a logical error model that is suitable for +// different programming environments, including REST APIs and RPC APIs. It is +// used by [gRPC](https://github.com/grpc). Each `Status` message contains +// three pieces of data: error code, error message, and error details. +// +// You can find out more about this error model and how to work with it in the +// [API Design Guide](https://cloud.google.com/apis/design/errors). +type Status struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // The status code, which should be an enum value of + // [google.rpc.Code][google.rpc.Code]. + Code int32 `protobuf:"varint,1,opt,name=code,proto3" json:"code,omitempty"` + // A developer-facing error message, which should be in English. Any + // user-facing error message should be localized and sent in the + // [google.rpc.Status.details][google.rpc.Status.details] field, or localized + // by the client. + Message string `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"` + // A list of messages that carry the error details. There is a common set of + // message types for APIs to use. + Details []*anypb.Any `protobuf:"bytes,3,rep,name=details,proto3" json:"details,omitempty"` +} + +func (x *Status) Reset() { + *x = Status{} + if protoimpl.UnsafeEnabled { + mi := &file_google_rpc_status_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Status) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Status) ProtoMessage() {} + +func (x *Status) ProtoReflect() protoreflect.Message { + mi := &file_google_rpc_status_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Status.ProtoReflect.Descriptor instead. +func (*Status) Descriptor() ([]byte, []int) { + return file_google_rpc_status_proto_rawDescGZIP(), []int{0} +} + +func (x *Status) GetCode() int32 { + if x != nil { + return x.Code + } + return 0 +} + +func (x *Status) GetMessage() string { + if x != nil { + return x.Message + } + return "" +} + +func (x *Status) GetDetails() []*anypb.Any { + if x != nil { + return x.Details + } + return nil +} + +var File_google_rpc_status_proto protoreflect.FileDescriptor + +var file_google_rpc_status_proto_rawDesc = []byte{ + 0x0a, 0x17, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x72, 0x70, 0x63, 0x2f, 0x73, 0x74, 0x61, + 0x74, 0x75, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0a, 0x67, 0x6f, 0x6f, 0x67, 0x6c, + 0x65, 0x2e, 0x72, 0x70, 0x63, 0x1a, 0x19, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, + 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x61, 0x6e, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, + 0x22, 0x66, 0x0a, 0x06, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x12, 0x0a, 0x04, 0x63, 0x6f, + 0x64, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x04, 0x63, 0x6f, 0x64, 0x65, 0x12, 0x18, + 0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, + 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x2e, 0x0a, 0x07, 0x64, 0x65, 0x74, 0x61, + 0x69, 0x6c, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x14, 0x2e, 0x67, 0x6f, 0x6f, 0x67, + 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x41, 0x6e, 0x79, 0x52, + 0x07, 0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x42, 0x61, 0x0a, 0x0e, 0x63, 0x6f, 0x6d, 0x2e, + 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x72, 0x70, 0x63, 0x42, 0x0b, 0x53, 0x74, 0x61, 0x74, + 0x75, 0x73, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x37, 0x67, 0x6f, 0x6f, 0x67, 0x6c, + 0x65, 0x2e, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x67, 0x65, 0x6e, + 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x61, 0x70, 0x69, 0x73, + 0x2f, 0x72, 0x70, 0x63, 0x2f, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x3b, 0x73, 0x74, 0x61, 0x74, + 0x75, 0x73, 0xf8, 0x01, 0x01, 0xa2, 0x02, 0x03, 0x52, 0x50, 0x43, 0x62, 0x06, 0x70, 0x72, 0x6f, + 0x74, 0x6f, 0x33, +} + +var ( + file_google_rpc_status_proto_rawDescOnce sync.Once + file_google_rpc_status_proto_rawDescData = file_google_rpc_status_proto_rawDesc +) + +func file_google_rpc_status_proto_rawDescGZIP() []byte { + file_google_rpc_status_proto_rawDescOnce.Do(func() { + file_google_rpc_status_proto_rawDescData = protoimpl.X.CompressGZIP(file_google_rpc_status_proto_rawDescData) + }) + return file_google_rpc_status_proto_rawDescData +} + +var file_google_rpc_status_proto_msgTypes = make([]protoimpl.MessageInfo, 1) +var file_google_rpc_status_proto_goTypes = []interface{}{ + (*Status)(nil), // 0: google.rpc.Status + (*anypb.Any)(nil), // 1: google.protobuf.Any +} +var file_google_rpc_status_proto_depIdxs = []int32{ + 1, // 0: google.rpc.Status.details:type_name -> google.protobuf.Any + 1, // [1:1] is the sub-list for method output_type + 1, // [1:1] is the sub-list for method input_type + 1, // [1:1] is the sub-list for extension type_name + 1, // [1:1] is the sub-list for extension extendee + 0, // [0:1] is the sub-list for field type_name +} + +func init() { file_google_rpc_status_proto_init() } +func file_google_rpc_status_proto_init() { + if File_google_rpc_status_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_google_rpc_status_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Status); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_google_rpc_status_proto_rawDesc, + NumEnums: 0, + NumMessages: 1, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_rpc_status_proto_goTypes, + DependencyIndexes: file_google_rpc_status_proto_depIdxs, + MessageInfos: file_google_rpc_status_proto_msgTypes, + }.Build() + File_google_rpc_status_proto = out.File + file_google_rpc_status_proto_rawDesc = nil + file_google_rpc_status_proto_goTypes = nil + file_google_rpc_status_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/decode.go b/vendor/google.golang.org/protobuf/encoding/protojson/decode.go new file mode 100644 index 0000000000..737d6876d5 --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/decode.go @@ -0,0 +1,680 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protojson + +import ( + "encoding/base64" + "fmt" + "math" + "strconv" + "strings" + + "google.golang.org/protobuf/encoding/protowire" + "google.golang.org/protobuf/internal/encoding/json" + "google.golang.org/protobuf/internal/encoding/messageset" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/flags" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/pragma" + "google.golang.org/protobuf/internal/set" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +// Unmarshal reads the given []byte into the given [proto.Message]. +// The provided message must be mutable (e.g., a non-nil pointer to a message). +func Unmarshal(b []byte, m proto.Message) error { + return UnmarshalOptions{}.Unmarshal(b, m) +} + +// UnmarshalOptions is a configurable JSON format parser. +type UnmarshalOptions struct { + pragma.NoUnkeyedLiterals + + // If AllowPartial is set, input for messages that will result in missing + // required fields will not return an error. + AllowPartial bool + + // If DiscardUnknown is set, unknown fields and enum name values are ignored. + DiscardUnknown bool + + // Resolver is used for looking up types when unmarshaling + // google.protobuf.Any messages or extension fields. + // If nil, this defaults to using protoregistry.GlobalTypes. + Resolver interface { + protoregistry.MessageTypeResolver + protoregistry.ExtensionTypeResolver + } + + // RecursionLimit limits how deeply messages may be nested. + // If zero, a default limit is applied. + RecursionLimit int +} + +// Unmarshal reads the given []byte and populates the given [proto.Message] +// using options in the UnmarshalOptions object. +// It will clear the message first before setting the fields. +// If it returns an error, the given message may be partially set. +// The provided message must be mutable (e.g., a non-nil pointer to a message). +func (o UnmarshalOptions) Unmarshal(b []byte, m proto.Message) error { + return o.unmarshal(b, m) +} + +// unmarshal is a centralized function that all unmarshal operations go through. +// For profiling purposes, avoid changing the name of this function or +// introducing other code paths for unmarshal that do not go through this. +func (o UnmarshalOptions) unmarshal(b []byte, m proto.Message) error { + proto.Reset(m) + + if o.Resolver == nil { + o.Resolver = protoregistry.GlobalTypes + } + if o.RecursionLimit == 0 { + o.RecursionLimit = protowire.DefaultRecursionLimit + } + + dec := decoder{json.NewDecoder(b), o} + if err := dec.unmarshalMessage(m.ProtoReflect(), false); err != nil { + return err + } + + // Check for EOF. + tok, err := dec.Read() + if err != nil { + return err + } + if tok.Kind() != json.EOF { + return dec.unexpectedTokenError(tok) + } + + if o.AllowPartial { + return nil + } + return proto.CheckInitialized(m) +} + +type decoder struct { + *json.Decoder + opts UnmarshalOptions +} + +// newError returns an error object with position info. +func (d decoder) newError(pos int, f string, x ...any) error { + line, column := d.Position(pos) + head := fmt.Sprintf("(line %d:%d): ", line, column) + return errors.New(head+f, x...) +} + +// unexpectedTokenError returns a syntax error for the given unexpected token. +func (d decoder) unexpectedTokenError(tok json.Token) error { + return d.syntaxError(tok.Pos(), "unexpected token %s", tok.RawString()) +} + +// syntaxError returns a syntax error for given position. +func (d decoder) syntaxError(pos int, f string, x ...any) error { + line, column := d.Position(pos) + head := fmt.Sprintf("syntax error (line %d:%d): ", line, column) + return errors.New(head+f, x...) +} + +// unmarshalMessage unmarshals a message into the given protoreflect.Message. +func (d decoder) unmarshalMessage(m protoreflect.Message, skipTypeURL bool) error { + d.opts.RecursionLimit-- + if d.opts.RecursionLimit < 0 { + return errors.New("exceeded max recursion depth") + } + if unmarshal := wellKnownTypeUnmarshaler(m.Descriptor().FullName()); unmarshal != nil { + return unmarshal(d, m) + } + + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(tok) + } + + messageDesc := m.Descriptor() + if !flags.ProtoLegacy && messageset.IsMessageSet(messageDesc) { + return errors.New("no support for proto1 MessageSets") + } + + var seenNums set.Ints + var seenOneofs set.Ints + fieldDescs := messageDesc.Fields() + for { + // Read field name. + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + default: + return d.unexpectedTokenError(tok) + case json.ObjectClose: + return nil + case json.Name: + // Continue below. + } + + name := tok.Name() + // Unmarshaling a non-custom embedded message in Any will contain the + // JSON field "@type" which should be skipped because it is not a field + // of the embedded message, but simply an artifact of the Any format. + if skipTypeURL && name == "@type" { + d.Read() + continue + } + + // Get the FieldDescriptor. + var fd protoreflect.FieldDescriptor + if strings.HasPrefix(name, "[") && strings.HasSuffix(name, "]") { + // Only extension names are in [name] format. + extName := protoreflect.FullName(name[1 : len(name)-1]) + extType, err := d.opts.Resolver.FindExtensionByName(extName) + if err != nil && err != protoregistry.NotFound { + return d.newError(tok.Pos(), "unable to resolve %s: %v", tok.RawString(), err) + } + if extType != nil { + fd = extType.TypeDescriptor() + if !messageDesc.ExtensionRanges().Has(fd.Number()) || fd.ContainingMessage().FullName() != messageDesc.FullName() { + return d.newError(tok.Pos(), "message %v cannot be extended by %v", messageDesc.FullName(), fd.FullName()) + } + } + } else { + // The name can either be the JSON name or the proto field name. + fd = fieldDescs.ByJSONName(name) + if fd == nil { + fd = fieldDescs.ByTextName(name) + } + } + + if fd == nil { + // Field is unknown. + if d.opts.DiscardUnknown { + if err := d.skipJSONValue(); err != nil { + return err + } + continue + } + return d.newError(tok.Pos(), "unknown field %v", tok.RawString()) + } + + // Do not allow duplicate fields. + num := uint64(fd.Number()) + if seenNums.Has(num) { + return d.newError(tok.Pos(), "duplicate field %v", tok.RawString()) + } + seenNums.Set(num) + + // No need to set values for JSON null unless the field type is + // google.protobuf.Value or google.protobuf.NullValue. + if tok, _ := d.Peek(); tok.Kind() == json.Null && !isKnownValue(fd) && !isNullValue(fd) { + d.Read() + continue + } + + switch { + case fd.IsList(): + list := m.Mutable(fd).List() + if err := d.unmarshalList(list, fd); err != nil { + return err + } + case fd.IsMap(): + mmap := m.Mutable(fd).Map() + if err := d.unmarshalMap(mmap, fd); err != nil { + return err + } + default: + // If field is a oneof, check if it has already been set. + if od := fd.ContainingOneof(); od != nil { + idx := uint64(od.Index()) + if seenOneofs.Has(idx) { + return d.newError(tok.Pos(), "error parsing %s, oneof %v is already set", tok.RawString(), od.FullName()) + } + seenOneofs.Set(idx) + } + + // Required or optional fields. + if err := d.unmarshalSingular(m, fd); err != nil { + return err + } + } + } +} + +func isKnownValue(fd protoreflect.FieldDescriptor) bool { + md := fd.Message() + return md != nil && md.FullName() == genid.Value_message_fullname +} + +func isNullValue(fd protoreflect.FieldDescriptor) bool { + ed := fd.Enum() + return ed != nil && ed.FullName() == genid.NullValue_enum_fullname +} + +// unmarshalSingular unmarshals to the non-repeated field specified +// by the given FieldDescriptor. +func (d decoder) unmarshalSingular(m protoreflect.Message, fd protoreflect.FieldDescriptor) error { + var val protoreflect.Value + var err error + switch fd.Kind() { + case protoreflect.MessageKind, protoreflect.GroupKind: + val = m.NewField(fd) + err = d.unmarshalMessage(val.Message(), false) + default: + val, err = d.unmarshalScalar(fd) + } + + if err != nil { + return err + } + if val.IsValid() { + m.Set(fd, val) + } + return nil +} + +// unmarshalScalar unmarshals to a scalar/enum protoreflect.Value specified by +// the given FieldDescriptor. +func (d decoder) unmarshalScalar(fd protoreflect.FieldDescriptor) (protoreflect.Value, error) { + const b32 int = 32 + const b64 int = 64 + + tok, err := d.Read() + if err != nil { + return protoreflect.Value{}, err + } + + kind := fd.Kind() + switch kind { + case protoreflect.BoolKind: + if tok.Kind() == json.Bool { + return protoreflect.ValueOfBool(tok.Bool()), nil + } + + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + if v, ok := unmarshalInt(tok, b32); ok { + return v, nil + } + + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + if v, ok := unmarshalInt(tok, b64); ok { + return v, nil + } + + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + if v, ok := unmarshalUint(tok, b32); ok { + return v, nil + } + + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + if v, ok := unmarshalUint(tok, b64); ok { + return v, nil + } + + case protoreflect.FloatKind: + if v, ok := unmarshalFloat(tok, b32); ok { + return v, nil + } + + case protoreflect.DoubleKind: + if v, ok := unmarshalFloat(tok, b64); ok { + return v, nil + } + + case protoreflect.StringKind: + if tok.Kind() == json.String { + return protoreflect.ValueOfString(tok.ParsedString()), nil + } + + case protoreflect.BytesKind: + if v, ok := unmarshalBytes(tok); ok { + return v, nil + } + + case protoreflect.EnumKind: + if v, ok := unmarshalEnum(tok, fd, d.opts.DiscardUnknown); ok { + return v, nil + } + + default: + panic(fmt.Sprintf("unmarshalScalar: invalid scalar kind %v", kind)) + } + + return protoreflect.Value{}, d.newError(tok.Pos(), "invalid value for %v field %v: %v", kind, fd.JSONName(), tok.RawString()) +} + +func unmarshalInt(tok json.Token, bitSize int) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.Number: + return getInt(tok, bitSize) + + case json.String: + // Decode number from string. + s := strings.TrimSpace(tok.ParsedString()) + if len(s) != len(tok.ParsedString()) { + return protoreflect.Value{}, false + } + dec := json.NewDecoder([]byte(s)) + tok, err := dec.Read() + if err != nil { + return protoreflect.Value{}, false + } + return getInt(tok, bitSize) + } + return protoreflect.Value{}, false +} + +func getInt(tok json.Token, bitSize int) (protoreflect.Value, bool) { + n, ok := tok.Int(bitSize) + if !ok { + return protoreflect.Value{}, false + } + if bitSize == 32 { + return protoreflect.ValueOfInt32(int32(n)), true + } + return protoreflect.ValueOfInt64(n), true +} + +func unmarshalUint(tok json.Token, bitSize int) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.Number: + return getUint(tok, bitSize) + + case json.String: + // Decode number from string. + s := strings.TrimSpace(tok.ParsedString()) + if len(s) != len(tok.ParsedString()) { + return protoreflect.Value{}, false + } + dec := json.NewDecoder([]byte(s)) + tok, err := dec.Read() + if err != nil { + return protoreflect.Value{}, false + } + return getUint(tok, bitSize) + } + return protoreflect.Value{}, false +} + +func getUint(tok json.Token, bitSize int) (protoreflect.Value, bool) { + n, ok := tok.Uint(bitSize) + if !ok { + return protoreflect.Value{}, false + } + if bitSize == 32 { + return protoreflect.ValueOfUint32(uint32(n)), true + } + return protoreflect.ValueOfUint64(n), true +} + +func unmarshalFloat(tok json.Token, bitSize int) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.Number: + return getFloat(tok, bitSize) + + case json.String: + s := tok.ParsedString() + switch s { + case "NaN": + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(math.NaN())), true + } + return protoreflect.ValueOfFloat64(math.NaN()), true + case "Infinity": + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(math.Inf(+1))), true + } + return protoreflect.ValueOfFloat64(math.Inf(+1)), true + case "-Infinity": + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(math.Inf(-1))), true + } + return protoreflect.ValueOfFloat64(math.Inf(-1)), true + } + + // Decode number from string. + if len(s) != len(strings.TrimSpace(s)) { + return protoreflect.Value{}, false + } + dec := json.NewDecoder([]byte(s)) + tok, err := dec.Read() + if err != nil { + return protoreflect.Value{}, false + } + return getFloat(tok, bitSize) + } + return protoreflect.Value{}, false +} + +func getFloat(tok json.Token, bitSize int) (protoreflect.Value, bool) { + n, ok := tok.Float(bitSize) + if !ok { + return protoreflect.Value{}, false + } + if bitSize == 32 { + return protoreflect.ValueOfFloat32(float32(n)), true + } + return protoreflect.ValueOfFloat64(n), true +} + +func unmarshalBytes(tok json.Token) (protoreflect.Value, bool) { + if tok.Kind() != json.String { + return protoreflect.Value{}, false + } + + s := tok.ParsedString() + enc := base64.StdEncoding + if strings.ContainsAny(s, "-_") { + enc = base64.URLEncoding + } + if len(s)%4 != 0 { + enc = enc.WithPadding(base64.NoPadding) + } + b, err := enc.DecodeString(s) + if err != nil { + return protoreflect.Value{}, false + } + return protoreflect.ValueOfBytes(b), true +} + +func unmarshalEnum(tok json.Token, fd protoreflect.FieldDescriptor, discardUnknown bool) (protoreflect.Value, bool) { + switch tok.Kind() { + case json.String: + // Lookup EnumNumber based on name. + s := tok.ParsedString() + if enumVal := fd.Enum().Values().ByName(protoreflect.Name(s)); enumVal != nil { + return protoreflect.ValueOfEnum(enumVal.Number()), true + } + if discardUnknown { + return protoreflect.Value{}, true + } + + case json.Number: + if n, ok := tok.Int(32); ok { + return protoreflect.ValueOfEnum(protoreflect.EnumNumber(n)), true + } + + case json.Null: + // This is only valid for google.protobuf.NullValue. + if isNullValue(fd) { + return protoreflect.ValueOfEnum(0), true + } + } + + return protoreflect.Value{}, false +} + +func (d decoder) unmarshalList(list protoreflect.List, fd protoreflect.FieldDescriptor) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ArrayOpen { + return d.unexpectedTokenError(tok) + } + + switch fd.Kind() { + case protoreflect.MessageKind, protoreflect.GroupKind: + for { + tok, err := d.Peek() + if err != nil { + return err + } + + if tok.Kind() == json.ArrayClose { + d.Read() + return nil + } + + val := list.NewElement() + if err := d.unmarshalMessage(val.Message(), false); err != nil { + return err + } + list.Append(val) + } + default: + for { + tok, err := d.Peek() + if err != nil { + return err + } + + if tok.Kind() == json.ArrayClose { + d.Read() + return nil + } + + val, err := d.unmarshalScalar(fd) + if err != nil { + return err + } + if val.IsValid() { + list.Append(val) + } + } + } + + return nil +} + +func (d decoder) unmarshalMap(mmap protoreflect.Map, fd protoreflect.FieldDescriptor) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(tok) + } + + // Determine ahead whether map entry is a scalar type or a message type in + // order to call the appropriate unmarshalMapValue func inside the for loop + // below. + var unmarshalMapValue func() (protoreflect.Value, error) + switch fd.MapValue().Kind() { + case protoreflect.MessageKind, protoreflect.GroupKind: + unmarshalMapValue = func() (protoreflect.Value, error) { + val := mmap.NewValue() + if err := d.unmarshalMessage(val.Message(), false); err != nil { + return protoreflect.Value{}, err + } + return val, nil + } + default: + unmarshalMapValue = func() (protoreflect.Value, error) { + return d.unmarshalScalar(fd.MapValue()) + } + } + +Loop: + for { + // Read field name. + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + default: + return d.unexpectedTokenError(tok) + case json.ObjectClose: + break Loop + case json.Name: + // Continue. + } + + // Unmarshal field name. + pkey, err := d.unmarshalMapKey(tok, fd.MapKey()) + if err != nil { + return err + } + + // Check for duplicate field name. + if mmap.Has(pkey) { + return d.newError(tok.Pos(), "duplicate map key %v", tok.RawString()) + } + + // Read and unmarshal field value. + pval, err := unmarshalMapValue() + if err != nil { + return err + } + if pval.IsValid() { + mmap.Set(pkey, pval) + } + } + + return nil +} + +// unmarshalMapKey converts given token of Name kind into a protoreflect.MapKey. +// A map key type is any integral or string type. +func (d decoder) unmarshalMapKey(tok json.Token, fd protoreflect.FieldDescriptor) (protoreflect.MapKey, error) { + const b32 = 32 + const b64 = 64 + const base10 = 10 + + name := tok.Name() + kind := fd.Kind() + switch kind { + case protoreflect.StringKind: + return protoreflect.ValueOfString(name).MapKey(), nil + + case protoreflect.BoolKind: + switch name { + case "true": + return protoreflect.ValueOfBool(true).MapKey(), nil + case "false": + return protoreflect.ValueOfBool(false).MapKey(), nil + } + + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + if n, err := strconv.ParseInt(name, base10, b32); err == nil { + return protoreflect.ValueOfInt32(int32(n)).MapKey(), nil + } + + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + if n, err := strconv.ParseInt(name, base10, b64); err == nil { + return protoreflect.ValueOfInt64(int64(n)).MapKey(), nil + } + + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + if n, err := strconv.ParseUint(name, base10, b32); err == nil { + return protoreflect.ValueOfUint32(uint32(n)).MapKey(), nil + } + + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + if n, err := strconv.ParseUint(name, base10, b64); err == nil { + return protoreflect.ValueOfUint64(uint64(n)).MapKey(), nil + } + + default: + panic(fmt.Sprintf("invalid kind for map key: %v", kind)) + } + + return protoreflect.MapKey{}, d.newError(tok.Pos(), "invalid value for %v key: %s", kind, tok.RawString()) +} diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/doc.go b/vendor/google.golang.org/protobuf/encoding/protojson/doc.go new file mode 100644 index 0000000000..ae71007c18 --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/doc.go @@ -0,0 +1,11 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package protojson marshals and unmarshals protocol buffer messages as JSON +// format. It follows the guide at +// https://protobuf.dev/programming-guides/proto3#json. +// +// This package produces a different output than the standard [encoding/json] +// package, which does not operate correctly on protocol buffer messages. +package protojson diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/encode.go b/vendor/google.golang.org/protobuf/encoding/protojson/encode.go new file mode 100644 index 0000000000..0e72d85378 --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/encode.go @@ -0,0 +1,380 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protojson + +import ( + "encoding/base64" + "fmt" + + "google.golang.org/protobuf/internal/encoding/json" + "google.golang.org/protobuf/internal/encoding/messageset" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/flags" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/order" + "google.golang.org/protobuf/internal/pragma" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +const defaultIndent = " " + +// Format formats the message as a multiline string. +// This function is only intended for human consumption and ignores errors. +// Do not depend on the output being stable. Its output will change across +// different builds of your program, even when using the same version of the +// protobuf module. +func Format(m proto.Message) string { + return MarshalOptions{Multiline: true}.Format(m) +} + +// Marshal writes the given [proto.Message] in JSON format using default options. +// Do not depend on the output being stable. Its output will change across +// different builds of your program, even when using the same version of the +// protobuf module. +func Marshal(m proto.Message) ([]byte, error) { + return MarshalOptions{}.Marshal(m) +} + +// MarshalOptions is a configurable JSON format marshaler. +type MarshalOptions struct { + pragma.NoUnkeyedLiterals + + // Multiline specifies whether the marshaler should format the output in + // indented-form with every textual element on a new line. + // If Indent is an empty string, then an arbitrary indent is chosen. + Multiline bool + + // Indent specifies the set of indentation characters to use in a multiline + // formatted output such that every entry is preceded by Indent and + // terminated by a newline. If non-empty, then Multiline is treated as true. + // Indent can only be composed of space or tab characters. + Indent string + + // AllowPartial allows messages that have missing required fields to marshal + // without returning an error. If AllowPartial is false (the default), + // Marshal will return error if there are any missing required fields. + AllowPartial bool + + // UseProtoNames uses proto field name instead of lowerCamelCase name in JSON + // field names. + UseProtoNames bool + + // UseEnumNumbers emits enum values as numbers. + UseEnumNumbers bool + + // EmitUnpopulated specifies whether to emit unpopulated fields. It does not + // emit unpopulated oneof fields or unpopulated extension fields. + // The JSON value emitted for unpopulated fields are as follows: + // ╔═══════╤════════════════════════════╗ + // ║ JSON │ Protobuf field ║ + // ╠═══════╪════════════════════════════╣ + // ║ false │ proto3 boolean fields ║ + // ║ 0 │ proto3 numeric fields ║ + // ║ "" │ proto3 string/bytes fields ║ + // ║ null │ proto2 scalar fields ║ + // ║ null │ message fields ║ + // ║ [] │ list fields ║ + // ║ {} │ map fields ║ + // ╚═══════╧════════════════════════════╝ + EmitUnpopulated bool + + // EmitDefaultValues specifies whether to emit default-valued primitive fields, + // empty lists, and empty maps. The fields affected are as follows: + // ╔═══════╤════════════════════════════════════════╗ + // ║ JSON │ Protobuf field ║ + // ╠═══════╪════════════════════════════════════════╣ + // ║ false │ non-optional scalar boolean fields ║ + // ║ 0 │ non-optional scalar numeric fields ║ + // ║ "" │ non-optional scalar string/byte fields ║ + // ║ [] │ empty repeated fields ║ + // ║ {} │ empty map fields ║ + // ╚═══════╧════════════════════════════════════════╝ + // + // Behaves similarly to EmitUnpopulated, but does not emit "null"-value fields, + // i.e. presence-sensing fields that are omitted will remain omitted to preserve + // presence-sensing. + // EmitUnpopulated takes precedence over EmitDefaultValues since the former generates + // a strict superset of the latter. + EmitDefaultValues bool + + // Resolver is used for looking up types when expanding google.protobuf.Any + // messages. If nil, this defaults to using protoregistry.GlobalTypes. + Resolver interface { + protoregistry.ExtensionTypeResolver + protoregistry.MessageTypeResolver + } +} + +// Format formats the message as a string. +// This method is only intended for human consumption and ignores errors. +// Do not depend on the output being stable. Its output will change across +// different builds of your program, even when using the same version of the +// protobuf module. +func (o MarshalOptions) Format(m proto.Message) string { + if m == nil || !m.ProtoReflect().IsValid() { + return "" // invalid syntax, but okay since this is for debugging + } + o.AllowPartial = true + b, _ := o.Marshal(m) + return string(b) +} + +// Marshal marshals the given [proto.Message] in the JSON format using options in +// Do not depend on the output being stable. Its output will change across +// different builds of your program, even when using the same version of the +// protobuf module. +func (o MarshalOptions) Marshal(m proto.Message) ([]byte, error) { + return o.marshal(nil, m) +} + +// MarshalAppend appends the JSON format encoding of m to b, +// returning the result. +func (o MarshalOptions) MarshalAppend(b []byte, m proto.Message) ([]byte, error) { + return o.marshal(b, m) +} + +// marshal is a centralized function that all marshal operations go through. +// For profiling purposes, avoid changing the name of this function or +// introducing other code paths for marshal that do not go through this. +func (o MarshalOptions) marshal(b []byte, m proto.Message) ([]byte, error) { + if o.Multiline && o.Indent == "" { + o.Indent = defaultIndent + } + if o.Resolver == nil { + o.Resolver = protoregistry.GlobalTypes + } + + internalEnc, err := json.NewEncoder(b, o.Indent) + if err != nil { + return nil, err + } + + // Treat nil message interface as an empty message, + // in which case the output in an empty JSON object. + if m == nil { + return append(b, '{', '}'), nil + } + + enc := encoder{internalEnc, o} + if err := enc.marshalMessage(m.ProtoReflect(), ""); err != nil { + return nil, err + } + if o.AllowPartial { + return enc.Bytes(), nil + } + return enc.Bytes(), proto.CheckInitialized(m) +} + +type encoder struct { + *json.Encoder + opts MarshalOptions +} + +// typeFieldDesc is a synthetic field descriptor used for the "@type" field. +var typeFieldDesc = func() protoreflect.FieldDescriptor { + var fd filedesc.Field + fd.L0.FullName = "@type" + fd.L0.Index = -1 + fd.L1.Cardinality = protoreflect.Optional + fd.L1.Kind = protoreflect.StringKind + return &fd +}() + +// typeURLFieldRanger wraps a protoreflect.Message and modifies its Range method +// to additionally iterate over a synthetic field for the type URL. +type typeURLFieldRanger struct { + order.FieldRanger + typeURL string +} + +func (m typeURLFieldRanger) Range(f func(protoreflect.FieldDescriptor, protoreflect.Value) bool) { + if !f(typeFieldDesc, protoreflect.ValueOfString(m.typeURL)) { + return + } + m.FieldRanger.Range(f) +} + +// unpopulatedFieldRanger wraps a protoreflect.Message and modifies its Range +// method to additionally iterate over unpopulated fields. +type unpopulatedFieldRanger struct { + protoreflect.Message + + skipNull bool +} + +func (m unpopulatedFieldRanger) Range(f func(protoreflect.FieldDescriptor, protoreflect.Value) bool) { + fds := m.Descriptor().Fields() + for i := 0; i < fds.Len(); i++ { + fd := fds.Get(i) + if m.Has(fd) || fd.ContainingOneof() != nil { + continue // ignore populated fields and fields within a oneofs + } + + v := m.Get(fd) + if fd.HasPresence() { + if m.skipNull { + continue + } + v = protoreflect.Value{} // use invalid value to emit null + } + if !f(fd, v) { + return + } + } + m.Message.Range(f) +} + +// marshalMessage marshals the fields in the given protoreflect.Message. +// If the typeURL is non-empty, then a synthetic "@type" field is injected +// containing the URL as the value. +func (e encoder) marshalMessage(m protoreflect.Message, typeURL string) error { + if !flags.ProtoLegacy && messageset.IsMessageSet(m.Descriptor()) { + return errors.New("no support for proto1 MessageSets") + } + + if marshal := wellKnownTypeMarshaler(m.Descriptor().FullName()); marshal != nil { + return marshal(e, m) + } + + e.StartObject() + defer e.EndObject() + + var fields order.FieldRanger = m + switch { + case e.opts.EmitUnpopulated: + fields = unpopulatedFieldRanger{Message: m, skipNull: false} + case e.opts.EmitDefaultValues: + fields = unpopulatedFieldRanger{Message: m, skipNull: true} + } + if typeURL != "" { + fields = typeURLFieldRanger{fields, typeURL} + } + + var err error + order.RangeFields(fields, order.IndexNameFieldOrder, func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool { + name := fd.JSONName() + if e.opts.UseProtoNames { + name = fd.TextName() + } + + if err = e.WriteName(name); err != nil { + return false + } + if err = e.marshalValue(v, fd); err != nil { + return false + } + return true + }) + return err +} + +// marshalValue marshals the given protoreflect.Value. +func (e encoder) marshalValue(val protoreflect.Value, fd protoreflect.FieldDescriptor) error { + switch { + case fd.IsList(): + return e.marshalList(val.List(), fd) + case fd.IsMap(): + return e.marshalMap(val.Map(), fd) + default: + return e.marshalSingular(val, fd) + } +} + +// marshalSingular marshals the given non-repeated field value. This includes +// all scalar types, enums, messages, and groups. +func (e encoder) marshalSingular(val protoreflect.Value, fd protoreflect.FieldDescriptor) error { + if !val.IsValid() { + e.WriteNull() + return nil + } + + switch kind := fd.Kind(); kind { + case protoreflect.BoolKind: + e.WriteBool(val.Bool()) + + case protoreflect.StringKind: + if e.WriteString(val.String()) != nil { + return errors.InvalidUTF8(string(fd.FullName())) + } + + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + e.WriteInt(val.Int()) + + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + e.WriteUint(val.Uint()) + + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Uint64Kind, + protoreflect.Sfixed64Kind, protoreflect.Fixed64Kind: + // 64-bit integers are written out as JSON string. + e.WriteString(val.String()) + + case protoreflect.FloatKind: + // Encoder.WriteFloat handles the special numbers NaN and infinites. + e.WriteFloat(val.Float(), 32) + + case protoreflect.DoubleKind: + // Encoder.WriteFloat handles the special numbers NaN and infinites. + e.WriteFloat(val.Float(), 64) + + case protoreflect.BytesKind: + e.WriteString(base64.StdEncoding.EncodeToString(val.Bytes())) + + case protoreflect.EnumKind: + if fd.Enum().FullName() == genid.NullValue_enum_fullname { + e.WriteNull() + } else { + desc := fd.Enum().Values().ByNumber(val.Enum()) + if e.opts.UseEnumNumbers || desc == nil { + e.WriteInt(int64(val.Enum())) + } else { + e.WriteString(string(desc.Name())) + } + } + + case protoreflect.MessageKind, protoreflect.GroupKind: + if err := e.marshalMessage(val.Message(), ""); err != nil { + return err + } + + default: + panic(fmt.Sprintf("%v has unknown kind: %v", fd.FullName(), kind)) + } + return nil +} + +// marshalList marshals the given protoreflect.List. +func (e encoder) marshalList(list protoreflect.List, fd protoreflect.FieldDescriptor) error { + e.StartArray() + defer e.EndArray() + + for i := 0; i < list.Len(); i++ { + item := list.Get(i) + if err := e.marshalSingular(item, fd); err != nil { + return err + } + } + return nil +} + +// marshalMap marshals given protoreflect.Map. +func (e encoder) marshalMap(mmap protoreflect.Map, fd protoreflect.FieldDescriptor) error { + e.StartObject() + defer e.EndObject() + + var err error + order.RangeEntries(mmap, order.GenericKeyOrder, func(k protoreflect.MapKey, v protoreflect.Value) bool { + if err = e.WriteName(k.String()); err != nil { + return false + } + if err = e.marshalSingular(v, fd.MapValue()); err != nil { + return false + } + return true + }) + return err +} diff --git a/vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go b/vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go new file mode 100644 index 0000000000..e9fe103943 --- /dev/null +++ b/vendor/google.golang.org/protobuf/encoding/protojson/well_known_types.go @@ -0,0 +1,880 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protojson + +import ( + "bytes" + "fmt" + "math" + "strconv" + "strings" + "time" + + "google.golang.org/protobuf/internal/encoding/json" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" +) + +type marshalFunc func(encoder, protoreflect.Message) error + +// wellKnownTypeMarshaler returns a marshal function if the message type +// has specialized serialization behavior. It returns nil otherwise. +func wellKnownTypeMarshaler(name protoreflect.FullName) marshalFunc { + if name.Parent() == genid.GoogleProtobuf_package { + switch name.Name() { + case genid.Any_message_name: + return encoder.marshalAny + case genid.Timestamp_message_name: + return encoder.marshalTimestamp + case genid.Duration_message_name: + return encoder.marshalDuration + case genid.BoolValue_message_name, + genid.Int32Value_message_name, + genid.Int64Value_message_name, + genid.UInt32Value_message_name, + genid.UInt64Value_message_name, + genid.FloatValue_message_name, + genid.DoubleValue_message_name, + genid.StringValue_message_name, + genid.BytesValue_message_name: + return encoder.marshalWrapperType + case genid.Struct_message_name: + return encoder.marshalStruct + case genid.ListValue_message_name: + return encoder.marshalListValue + case genid.Value_message_name: + return encoder.marshalKnownValue + case genid.FieldMask_message_name: + return encoder.marshalFieldMask + case genid.Empty_message_name: + return encoder.marshalEmpty + } + } + return nil +} + +type unmarshalFunc func(decoder, protoreflect.Message) error + +// wellKnownTypeUnmarshaler returns a unmarshal function if the message type +// has specialized serialization behavior. It returns nil otherwise. +func wellKnownTypeUnmarshaler(name protoreflect.FullName) unmarshalFunc { + if name.Parent() == genid.GoogleProtobuf_package { + switch name.Name() { + case genid.Any_message_name: + return decoder.unmarshalAny + case genid.Timestamp_message_name: + return decoder.unmarshalTimestamp + case genid.Duration_message_name: + return decoder.unmarshalDuration + case genid.BoolValue_message_name, + genid.Int32Value_message_name, + genid.Int64Value_message_name, + genid.UInt32Value_message_name, + genid.UInt64Value_message_name, + genid.FloatValue_message_name, + genid.DoubleValue_message_name, + genid.StringValue_message_name, + genid.BytesValue_message_name: + return decoder.unmarshalWrapperType + case genid.Struct_message_name: + return decoder.unmarshalStruct + case genid.ListValue_message_name: + return decoder.unmarshalListValue + case genid.Value_message_name: + return decoder.unmarshalKnownValue + case genid.FieldMask_message_name: + return decoder.unmarshalFieldMask + case genid.Empty_message_name: + return decoder.unmarshalEmpty + } + } + return nil +} + +// The JSON representation of an Any message uses the regular representation of +// the deserialized, embedded message, with an additional field `@type` which +// contains the type URL. If the embedded message type is well-known and has a +// custom JSON representation, that representation will be embedded adding a +// field `value` which holds the custom JSON in addition to the `@type` field. + +func (e encoder) marshalAny(m protoreflect.Message) error { + fds := m.Descriptor().Fields() + fdType := fds.ByNumber(genid.Any_TypeUrl_field_number) + fdValue := fds.ByNumber(genid.Any_Value_field_number) + + if !m.Has(fdType) { + if !m.Has(fdValue) { + // If message is empty, marshal out empty JSON object. + e.StartObject() + e.EndObject() + return nil + } else { + // Return error if type_url field is not set, but value is set. + return errors.New("%s: %v is not set", genid.Any_message_fullname, genid.Any_TypeUrl_field_name) + } + } + + typeVal := m.Get(fdType) + valueVal := m.Get(fdValue) + + // Resolve the type in order to unmarshal value field. + typeURL := typeVal.String() + emt, err := e.opts.Resolver.FindMessageByURL(typeURL) + if err != nil { + return errors.New("%s: unable to resolve %q: %v", genid.Any_message_fullname, typeURL, err) + } + + em := emt.New() + err = proto.UnmarshalOptions{ + AllowPartial: true, // never check required fields inside an Any + Resolver: e.opts.Resolver, + }.Unmarshal(valueVal.Bytes(), em.Interface()) + if err != nil { + return errors.New("%s: unable to unmarshal %q: %v", genid.Any_message_fullname, typeURL, err) + } + + // If type of value has custom JSON encoding, marshal out a field "value" + // with corresponding custom JSON encoding of the embedded message as a + // field. + if marshal := wellKnownTypeMarshaler(emt.Descriptor().FullName()); marshal != nil { + e.StartObject() + defer e.EndObject() + + // Marshal out @type field. + e.WriteName("@type") + if err := e.WriteString(typeURL); err != nil { + return err + } + + e.WriteName("value") + return marshal(e, em) + } + + // Else, marshal out the embedded message's fields in this Any object. + if err := e.marshalMessage(em, typeURL); err != nil { + return err + } + + return nil +} + +func (d decoder) unmarshalAny(m protoreflect.Message) error { + // Peek to check for json.ObjectOpen to avoid advancing a read. + start, err := d.Peek() + if err != nil { + return err + } + if start.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(start) + } + + // Use another decoder to parse the unread bytes for @type field. This + // avoids advancing a read from current decoder because the current JSON + // object may contain the fields of the embedded type. + dec := decoder{d.Clone(), UnmarshalOptions{RecursionLimit: d.opts.RecursionLimit}} + tok, err := findTypeURL(dec) + switch err { + case errEmptyObject: + // An empty JSON object translates to an empty Any message. + d.Read() // Read json.ObjectOpen. + d.Read() // Read json.ObjectClose. + return nil + + case errMissingType: + if d.opts.DiscardUnknown { + // Treat all fields as unknowns, similar to an empty object. + return d.skipJSONValue() + } + // Use start.Pos() for line position. + return d.newError(start.Pos(), err.Error()) + + default: + if err != nil { + return err + } + } + + typeURL := tok.ParsedString() + emt, err := d.opts.Resolver.FindMessageByURL(typeURL) + if err != nil { + return d.newError(tok.Pos(), "unable to resolve %v: %q", tok.RawString(), err) + } + + // Create new message for the embedded message type and unmarshal into it. + em := emt.New() + if unmarshal := wellKnownTypeUnmarshaler(emt.Descriptor().FullName()); unmarshal != nil { + // If embedded message is a custom type, + // unmarshal the JSON "value" field into it. + if err := d.unmarshalAnyValue(unmarshal, em); err != nil { + return err + } + } else { + // Else unmarshal the current JSON object into it. + if err := d.unmarshalMessage(em, true); err != nil { + return err + } + } + // Serialize the embedded message and assign the resulting bytes to the + // proto value field. + b, err := proto.MarshalOptions{ + AllowPartial: true, // No need to check required fields inside an Any. + Deterministic: true, + }.Marshal(em.Interface()) + if err != nil { + return d.newError(start.Pos(), "error in marshaling Any.value field: %v", err) + } + + fds := m.Descriptor().Fields() + fdType := fds.ByNumber(genid.Any_TypeUrl_field_number) + fdValue := fds.ByNumber(genid.Any_Value_field_number) + + m.Set(fdType, protoreflect.ValueOfString(typeURL)) + m.Set(fdValue, protoreflect.ValueOfBytes(b)) + return nil +} + +var errEmptyObject = fmt.Errorf(`empty object`) +var errMissingType = fmt.Errorf(`missing "@type" field`) + +// findTypeURL returns the token for the "@type" field value from the given +// JSON bytes. It is expected that the given bytes start with json.ObjectOpen. +// It returns errEmptyObject if the JSON object is empty or errMissingType if +// @type field does not exist. It returns other error if the @type field is not +// valid or other decoding issues. +func findTypeURL(d decoder) (json.Token, error) { + var typeURL string + var typeTok json.Token + numFields := 0 + // Skip start object. + d.Read() + +Loop: + for { + tok, err := d.Read() + if err != nil { + return json.Token{}, err + } + + switch tok.Kind() { + case json.ObjectClose: + if typeURL == "" { + // Did not find @type field. + if numFields > 0 { + return json.Token{}, errMissingType + } + return json.Token{}, errEmptyObject + } + break Loop + + case json.Name: + numFields++ + if tok.Name() != "@type" { + // Skip value. + if err := d.skipJSONValue(); err != nil { + return json.Token{}, err + } + continue + } + + // Return error if this was previously set already. + if typeURL != "" { + return json.Token{}, d.newError(tok.Pos(), `duplicate "@type" field`) + } + // Read field value. + tok, err := d.Read() + if err != nil { + return json.Token{}, err + } + if tok.Kind() != json.String { + return json.Token{}, d.newError(tok.Pos(), `@type field value is not a string: %v`, tok.RawString()) + } + typeURL = tok.ParsedString() + if typeURL == "" { + return json.Token{}, d.newError(tok.Pos(), `@type field contains empty value`) + } + typeTok = tok + } + } + + return typeTok, nil +} + +// skipJSONValue parses a JSON value (null, boolean, string, number, object and +// array) in order to advance the read to the next JSON value. It relies on +// the decoder returning an error if the types are not in valid sequence. +func (d decoder) skipJSONValue() error { + var open int + for { + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + case json.ObjectClose, json.ArrayClose: + open-- + case json.ObjectOpen, json.ArrayOpen: + open++ + if open > d.opts.RecursionLimit { + return errors.New("exceeded max recursion depth") + } + case json.EOF: + // This can only happen if there's a bug in Decoder.Read. + // Avoid an infinite loop if this does happen. + return errors.New("unexpected EOF") + } + if open == 0 { + return nil + } + } +} + +// unmarshalAnyValue unmarshals the given custom-type message from the JSON +// object's "value" field. +func (d decoder) unmarshalAnyValue(unmarshal unmarshalFunc, m protoreflect.Message) error { + // Skip ObjectOpen, and start reading the fields. + d.Read() + + var found bool // Used for detecting duplicate "value". + for { + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + case json.ObjectClose: + if !found { + // We tolerate an omitted `value` field with the google.protobuf.Empty Well-Known-Type, + // for compatibility with other proto runtimes that have interpreted the spec differently. + if m.Descriptor().FullName() != genid.Empty_message_fullname { + return d.newError(tok.Pos(), `missing "value" field`) + } + } + return nil + + case json.Name: + switch tok.Name() { + case "@type": + // Skip the value as this was previously parsed already. + d.Read() + + case "value": + if found { + return d.newError(tok.Pos(), `duplicate "value" field`) + } + // Unmarshal the field value into the given message. + if err := unmarshal(d, m); err != nil { + return err + } + found = true + + default: + if d.opts.DiscardUnknown { + if err := d.skipJSONValue(); err != nil { + return err + } + continue + } + return d.newError(tok.Pos(), "unknown field %v", tok.RawString()) + } + } + } +} + +// Wrapper types are encoded as JSON primitives like string, number or boolean. + +func (e encoder) marshalWrapperType(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.WrapperValue_Value_field_number) + val := m.Get(fd) + return e.marshalSingular(val, fd) +} + +func (d decoder) unmarshalWrapperType(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.WrapperValue_Value_field_number) + val, err := d.unmarshalScalar(fd) + if err != nil { + return err + } + m.Set(fd, val) + return nil +} + +// The JSON representation for Empty is an empty JSON object. + +func (e encoder) marshalEmpty(protoreflect.Message) error { + e.StartObject() + e.EndObject() + return nil +} + +func (d decoder) unmarshalEmpty(protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.ObjectOpen { + return d.unexpectedTokenError(tok) + } + + for { + tok, err := d.Read() + if err != nil { + return err + } + switch tok.Kind() { + case json.ObjectClose: + return nil + + case json.Name: + if d.opts.DiscardUnknown { + if err := d.skipJSONValue(); err != nil { + return err + } + continue + } + return d.newError(tok.Pos(), "unknown field %v", tok.RawString()) + + default: + return d.unexpectedTokenError(tok) + } + } +} + +// The JSON representation for Struct is a JSON object that contains the encoded +// Struct.fields map and follows the serialization rules for a map. + +func (e encoder) marshalStruct(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.Struct_Fields_field_number) + return e.marshalMap(m.Get(fd).Map(), fd) +} + +func (d decoder) unmarshalStruct(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.Struct_Fields_field_number) + return d.unmarshalMap(m.Mutable(fd).Map(), fd) +} + +// The JSON representation for ListValue is JSON array that contains the encoded +// ListValue.values repeated field and follows the serialization rules for a +// repeated field. + +func (e encoder) marshalListValue(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.ListValue_Values_field_number) + return e.marshalList(m.Get(fd).List(), fd) +} + +func (d decoder) unmarshalListValue(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.ListValue_Values_field_number) + return d.unmarshalList(m.Mutable(fd).List(), fd) +} + +// The JSON representation for a Value is dependent on the oneof field that is +// set. Each of the field in the oneof has its own custom serialization rule. A +// Value message needs to be a oneof field set, else it is an error. + +func (e encoder) marshalKnownValue(m protoreflect.Message) error { + od := m.Descriptor().Oneofs().ByName(genid.Value_Kind_oneof_name) + fd := m.WhichOneof(od) + if fd == nil { + return errors.New("%s: none of the oneof fields is set", genid.Value_message_fullname) + } + if fd.Number() == genid.Value_NumberValue_field_number { + if v := m.Get(fd).Float(); math.IsNaN(v) || math.IsInf(v, 0) { + return errors.New("%s: invalid %v value", genid.Value_NumberValue_field_fullname, v) + } + } + return e.marshalSingular(m.Get(fd), fd) +} + +func (d decoder) unmarshalKnownValue(m protoreflect.Message) error { + tok, err := d.Peek() + if err != nil { + return err + } + + var fd protoreflect.FieldDescriptor + var val protoreflect.Value + switch tok.Kind() { + case json.Null: + d.Read() + fd = m.Descriptor().Fields().ByNumber(genid.Value_NullValue_field_number) + val = protoreflect.ValueOfEnum(0) + + case json.Bool: + tok, err := d.Read() + if err != nil { + return err + } + fd = m.Descriptor().Fields().ByNumber(genid.Value_BoolValue_field_number) + val = protoreflect.ValueOfBool(tok.Bool()) + + case json.Number: + tok, err := d.Read() + if err != nil { + return err + } + fd = m.Descriptor().Fields().ByNumber(genid.Value_NumberValue_field_number) + var ok bool + val, ok = unmarshalFloat(tok, 64) + if !ok { + return d.newError(tok.Pos(), "invalid %v: %v", genid.Value_message_fullname, tok.RawString()) + } + + case json.String: + // A JSON string may have been encoded from the number_value field, + // e.g. "NaN", "Infinity", etc. Parsing a proto double type also allows + // for it to be in JSON string form. Given this custom encoding spec, + // however, there is no way to identify that and hence a JSON string is + // always assigned to the string_value field, which means that certain + // encoding cannot be parsed back to the same field. + tok, err := d.Read() + if err != nil { + return err + } + fd = m.Descriptor().Fields().ByNumber(genid.Value_StringValue_field_number) + val = protoreflect.ValueOfString(tok.ParsedString()) + + case json.ObjectOpen: + fd = m.Descriptor().Fields().ByNumber(genid.Value_StructValue_field_number) + val = m.NewField(fd) + if err := d.unmarshalStruct(val.Message()); err != nil { + return err + } + + case json.ArrayOpen: + fd = m.Descriptor().Fields().ByNumber(genid.Value_ListValue_field_number) + val = m.NewField(fd) + if err := d.unmarshalListValue(val.Message()); err != nil { + return err + } + + default: + return d.newError(tok.Pos(), "invalid %v: %v", genid.Value_message_fullname, tok.RawString()) + } + + m.Set(fd, val) + return nil +} + +// The JSON representation for a Duration is a JSON string that ends in the +// suffix "s" (indicating seconds) and is preceded by the number of seconds, +// with nanoseconds expressed as fractional seconds. +// +// Durations less than one second are represented with a 0 seconds field and a +// positive or negative nanos field. For durations of one second or more, a +// non-zero value for the nanos field must be of the same sign as the seconds +// field. +// +// Duration.seconds must be from -315,576,000,000 to +315,576,000,000 inclusive. +// Duration.nanos must be from -999,999,999 to +999,999,999 inclusive. + +const ( + secondsInNanos = 999999999 + maxSecondsInDuration = 315576000000 +) + +func (e encoder) marshalDuration(m protoreflect.Message) error { + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Duration_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Duration_Nanos_field_number) + + secsVal := m.Get(fdSeconds) + nanosVal := m.Get(fdNanos) + secs := secsVal.Int() + nanos := nanosVal.Int() + if secs < -maxSecondsInDuration || secs > maxSecondsInDuration { + return errors.New("%s: seconds out of range %v", genid.Duration_message_fullname, secs) + } + if nanos < -secondsInNanos || nanos > secondsInNanos { + return errors.New("%s: nanos out of range %v", genid.Duration_message_fullname, nanos) + } + if (secs > 0 && nanos < 0) || (secs < 0 && nanos > 0) { + return errors.New("%s: signs of seconds and nanos do not match", genid.Duration_message_fullname) + } + // Generated output always contains 0, 3, 6, or 9 fractional digits, + // depending on required precision, followed by the suffix "s". + var sign string + if secs < 0 || nanos < 0 { + sign, secs, nanos = "-", -1*secs, -1*nanos + } + x := fmt.Sprintf("%s%d.%09d", sign, secs, nanos) + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, ".000") + e.WriteString(x + "s") + return nil +} + +func (d decoder) unmarshalDuration(m protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.String { + return d.unexpectedTokenError(tok) + } + + secs, nanos, ok := parseDuration(tok.ParsedString()) + if !ok { + return d.newError(tok.Pos(), "invalid %v value %v", genid.Duration_message_fullname, tok.RawString()) + } + // Validate seconds. No need to validate nanos because parseDuration would + // have covered that already. + if secs < -maxSecondsInDuration || secs > maxSecondsInDuration { + return d.newError(tok.Pos(), "%v value out of range: %v", genid.Duration_message_fullname, tok.RawString()) + } + + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Duration_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Duration_Nanos_field_number) + + m.Set(fdSeconds, protoreflect.ValueOfInt64(secs)) + m.Set(fdNanos, protoreflect.ValueOfInt32(nanos)) + return nil +} + +// parseDuration parses the given input string for seconds and nanoseconds value +// for the Duration JSON format. The format is a decimal number with a suffix +// 's'. It can have optional plus/minus sign. There needs to be at least an +// integer or fractional part. Fractional part is limited to 9 digits only for +// nanoseconds precision, regardless of whether there are trailing zero digits. +// Example values are 1s, 0.1s, 1.s, .1s, +1s, -1s, -.1s. +func parseDuration(input string) (int64, int32, bool) { + b := []byte(input) + size := len(b) + if size < 2 { + return 0, 0, false + } + if b[size-1] != 's' { + return 0, 0, false + } + b = b[:size-1] + + // Read optional plus/minus symbol. + var neg bool + switch b[0] { + case '-': + neg = true + b = b[1:] + case '+': + b = b[1:] + } + if len(b) == 0 { + return 0, 0, false + } + + // Read the integer part. + var intp []byte + switch { + case b[0] == '0': + b = b[1:] + + case '1' <= b[0] && b[0] <= '9': + intp = b[0:] + b = b[1:] + n := 1 + for len(b) > 0 && '0' <= b[0] && b[0] <= '9' { + n++ + b = b[1:] + } + intp = intp[:n] + + case b[0] == '.': + // Continue below. + + default: + return 0, 0, false + } + + hasFrac := false + var frac [9]byte + if len(b) > 0 { + if b[0] != '.' { + return 0, 0, false + } + // Read the fractional part. + b = b[1:] + n := 0 + for len(b) > 0 && n < 9 && '0' <= b[0] && b[0] <= '9' { + frac[n] = b[0] + n++ + b = b[1:] + } + // It is not valid if there are more bytes left. + if len(b) > 0 { + return 0, 0, false + } + // Pad fractional part with 0s. + for i := n; i < 9; i++ { + frac[i] = '0' + } + hasFrac = true + } + + var secs int64 + if len(intp) > 0 { + var err error + secs, err = strconv.ParseInt(string(intp), 10, 64) + if err != nil { + return 0, 0, false + } + } + + var nanos int64 + if hasFrac { + nanob := bytes.TrimLeft(frac[:], "0") + if len(nanob) > 0 { + var err error + nanos, err = strconv.ParseInt(string(nanob), 10, 32) + if err != nil { + return 0, 0, false + } + } + } + + if neg { + if secs > 0 { + secs = -secs + } + if nanos > 0 { + nanos = -nanos + } + } + return secs, int32(nanos), true +} + +// The JSON representation for a Timestamp is a JSON string in the RFC 3339 +// format, i.e. "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z" where +// {year} is always expressed using four digits while {month}, {day}, {hour}, +// {min}, and {sec} are zero-padded to two digits each. The fractional seconds, +// which can go up to 9 digits, up to 1 nanosecond resolution, is optional. The +// "Z" suffix indicates the timezone ("UTC"); the timezone is required. Encoding +// should always use UTC (as indicated by "Z") and a decoder should be able to +// accept both UTC and other timezones (as indicated by an offset). +// +// Timestamp.seconds must be from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z +// inclusive. +// Timestamp.nanos must be from 0 to 999,999,999 inclusive. + +const ( + maxTimestampSeconds = 253402300799 + minTimestampSeconds = -62135596800 +) + +func (e encoder) marshalTimestamp(m protoreflect.Message) error { + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Timestamp_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Timestamp_Nanos_field_number) + + secsVal := m.Get(fdSeconds) + nanosVal := m.Get(fdNanos) + secs := secsVal.Int() + nanos := nanosVal.Int() + if secs < minTimestampSeconds || secs > maxTimestampSeconds { + return errors.New("%s: seconds out of range %v", genid.Timestamp_message_fullname, secs) + } + if nanos < 0 || nanos > secondsInNanos { + return errors.New("%s: nanos out of range %v", genid.Timestamp_message_fullname, nanos) + } + // Uses RFC 3339, where generated output will be Z-normalized and uses 0, 3, + // 6 or 9 fractional digits. + t := time.Unix(secs, nanos).UTC() + x := t.Format("2006-01-02T15:04:05.000000000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, "000") + x = strings.TrimSuffix(x, ".000") + e.WriteString(x + "Z") + return nil +} + +func (d decoder) unmarshalTimestamp(m protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.String { + return d.unexpectedTokenError(tok) + } + + s := tok.ParsedString() + t, err := time.Parse(time.RFC3339Nano, s) + if err != nil { + return d.newError(tok.Pos(), "invalid %v value %v", genid.Timestamp_message_fullname, tok.RawString()) + } + // Validate seconds. + secs := t.Unix() + if secs < minTimestampSeconds || secs > maxTimestampSeconds { + return d.newError(tok.Pos(), "%v value out of range: %v", genid.Timestamp_message_fullname, tok.RawString()) + } + // Validate subseconds. + i := strings.LastIndexByte(s, '.') // start of subsecond field + j := strings.LastIndexAny(s, "Z-+") // start of timezone field + if i >= 0 && j >= i && j-i > len(".999999999") { + return d.newError(tok.Pos(), "invalid %v value %v", genid.Timestamp_message_fullname, tok.RawString()) + } + + fds := m.Descriptor().Fields() + fdSeconds := fds.ByNumber(genid.Timestamp_Seconds_field_number) + fdNanos := fds.ByNumber(genid.Timestamp_Nanos_field_number) + + m.Set(fdSeconds, protoreflect.ValueOfInt64(secs)) + m.Set(fdNanos, protoreflect.ValueOfInt32(int32(t.Nanosecond()))) + return nil +} + +// The JSON representation for a FieldMask is a JSON string where paths are +// separated by a comma. Fields name in each path are converted to/from +// lower-camel naming conventions. Encoding should fail if the path name would +// end up differently after a round-trip. + +func (e encoder) marshalFieldMask(m protoreflect.Message) error { + fd := m.Descriptor().Fields().ByNumber(genid.FieldMask_Paths_field_number) + list := m.Get(fd).List() + paths := make([]string, 0, list.Len()) + + for i := 0; i < list.Len(); i++ { + s := list.Get(i).String() + if !protoreflect.FullName(s).IsValid() { + return errors.New("%s contains invalid path: %q", genid.FieldMask_Paths_field_fullname, s) + } + // Return error if conversion to camelCase is not reversible. + cc := strs.JSONCamelCase(s) + if s != strs.JSONSnakeCase(cc) { + return errors.New("%s contains irreversible value %q", genid.FieldMask_Paths_field_fullname, s) + } + paths = append(paths, cc) + } + + e.WriteString(strings.Join(paths, ",")) + return nil +} + +func (d decoder) unmarshalFieldMask(m protoreflect.Message) error { + tok, err := d.Read() + if err != nil { + return err + } + if tok.Kind() != json.String { + return d.unexpectedTokenError(tok) + } + str := strings.TrimSpace(tok.ParsedString()) + if str == "" { + return nil + } + paths := strings.Split(str, ",") + + fd := m.Descriptor().Fields().ByNumber(genid.FieldMask_Paths_field_number) + list := m.Mutable(fd).List() + + for _, s0 := range paths { + s := strs.JSONSnakeCase(s0) + if strings.Contains(s0, "_") || !protoreflect.FullName(s).IsValid() { + return d.newError(tok.Pos(), "%v contains invalid path: %q", genid.FieldMask_Paths_field_fullname, s0) + } + list.Append(protoreflect.ValueOfString(s)) + } + return nil +} diff --git a/vendor/google.golang.org/protobuf/internal/editionssupport/editions.go b/vendor/google.golang.org/protobuf/internal/editionssupport/editions.go new file mode 100644 index 0000000000..bf1aba0e85 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/editionssupport/editions.go @@ -0,0 +1,18 @@ +// Copyright 2024 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package editionssupport defines constants for editions that are supported. +package editionssupport + +import "google.golang.org/protobuf/types/descriptorpb" + +const ( + Minimum = descriptorpb.Edition_EDITION_PROTO2 + Maximum = descriptorpb.Edition_EDITION_2023 + + // MaximumKnown is the maximum edition that is known to Go Protobuf, but not + // declared as supported. In other words: end users cannot use it, but + // testprotos inside Go Protobuf can. + MaximumKnown = descriptorpb.Edition_EDITION_2024 +) diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode.go new file mode 100644 index 0000000000..ea1d3e65a5 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode.go @@ -0,0 +1,340 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "bytes" + "fmt" + "io" + "regexp" + "unicode/utf8" + + "google.golang.org/protobuf/internal/errors" +) + +// call specifies which Decoder method was invoked. +type call uint8 + +const ( + readCall call = iota + peekCall +) + +const unexpectedFmt = "unexpected token %s" + +// ErrUnexpectedEOF means that EOF was encountered in the middle of the input. +var ErrUnexpectedEOF = errors.New("%v", io.ErrUnexpectedEOF) + +// Decoder is a token-based JSON decoder. +type Decoder struct { + // lastCall is last method called, either readCall or peekCall. + // Initial value is readCall. + lastCall call + + // lastToken contains the last read token. + lastToken Token + + // lastErr contains the last read error. + lastErr error + + // openStack is a stack containing ObjectOpen and ArrayOpen values. The + // top of stack represents the object or the array the current value is + // directly located in. + openStack []Kind + + // orig is used in reporting line and column. + orig []byte + // in contains the unconsumed input. + in []byte +} + +// NewDecoder returns a Decoder to read the given []byte. +func NewDecoder(b []byte) *Decoder { + return &Decoder{orig: b, in: b} +} + +// Peek looks ahead and returns the next token kind without advancing a read. +func (d *Decoder) Peek() (Token, error) { + defer func() { d.lastCall = peekCall }() + if d.lastCall == readCall { + d.lastToken, d.lastErr = d.Read() + } + return d.lastToken, d.lastErr +} + +// Read returns the next JSON token. +// It will return an error if there is no valid token. +func (d *Decoder) Read() (Token, error) { + const scalar = Null | Bool | Number | String + + defer func() { d.lastCall = readCall }() + if d.lastCall == peekCall { + return d.lastToken, d.lastErr + } + + tok, err := d.parseNext() + if err != nil { + return Token{}, err + } + + switch tok.kind { + case EOF: + if len(d.openStack) != 0 || + d.lastToken.kind&scalar|ObjectClose|ArrayClose == 0 { + return Token{}, ErrUnexpectedEOF + } + + case Null: + if !d.isValueNext() { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + + case Bool, Number: + if !d.isValueNext() { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + + case String: + if d.isValueNext() { + break + } + // This string token should only be for a field name. + if d.lastToken.kind&(ObjectOpen|comma) == 0 { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + if len(d.in) == 0 { + return Token{}, ErrUnexpectedEOF + } + if c := d.in[0]; c != ':' { + return Token{}, d.newSyntaxError(d.currPos(), `unexpected character %s, missing ":" after field name`, string(c)) + } + tok.kind = Name + d.consume(1) + + case ObjectOpen, ArrayOpen: + if !d.isValueNext() { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + d.openStack = append(d.openStack, tok.kind) + + case ObjectClose: + if len(d.openStack) == 0 || + d.lastToken.kind&(Name|comma) != 0 || + d.openStack[len(d.openStack)-1] != ObjectOpen { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + d.openStack = d.openStack[:len(d.openStack)-1] + + case ArrayClose: + if len(d.openStack) == 0 || + d.lastToken.kind == comma || + d.openStack[len(d.openStack)-1] != ArrayOpen { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + d.openStack = d.openStack[:len(d.openStack)-1] + + case comma: + if len(d.openStack) == 0 || + d.lastToken.kind&(scalar|ObjectClose|ArrayClose) == 0 { + return Token{}, d.newSyntaxError(tok.pos, unexpectedFmt, tok.RawString()) + } + } + + // Update d.lastToken only after validating token to be in the right sequence. + d.lastToken = tok + + if d.lastToken.kind == comma { + return d.Read() + } + return tok, nil +} + +// Any sequence that looks like a non-delimiter (for error reporting). +var errRegexp = regexp.MustCompile(`^([-+._a-zA-Z0-9]{1,32}|.)`) + +// parseNext parses for the next JSON token. It returns a Token object for +// different types, except for Name. It does not handle whether the next token +// is in a valid sequence or not. +func (d *Decoder) parseNext() (Token, error) { + // Trim leading spaces. + d.consume(0) + + in := d.in + if len(in) == 0 { + return d.consumeToken(EOF, 0), nil + } + + switch in[0] { + case 'n': + if n := matchWithDelim("null", in); n != 0 { + return d.consumeToken(Null, n), nil + } + + case 't': + if n := matchWithDelim("true", in); n != 0 { + return d.consumeBoolToken(true, n), nil + } + + case 'f': + if n := matchWithDelim("false", in); n != 0 { + return d.consumeBoolToken(false, n), nil + } + + case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9': + if n, ok := parseNumber(in); ok { + return d.consumeToken(Number, n), nil + } + + case '"': + s, n, err := d.parseString(in) + if err != nil { + return Token{}, err + } + return d.consumeStringToken(s, n), nil + + case '{': + return d.consumeToken(ObjectOpen, 1), nil + + case '}': + return d.consumeToken(ObjectClose, 1), nil + + case '[': + return d.consumeToken(ArrayOpen, 1), nil + + case ']': + return d.consumeToken(ArrayClose, 1), nil + + case ',': + return d.consumeToken(comma, 1), nil + } + return Token{}, d.newSyntaxError(d.currPos(), "invalid value %s", errRegexp.Find(in)) +} + +// newSyntaxError returns an error with line and column information useful for +// syntax errors. +func (d *Decoder) newSyntaxError(pos int, f string, x ...any) error { + e := errors.New(f, x...) + line, column := d.Position(pos) + return errors.New("syntax error (line %d:%d): %v", line, column, e) +} + +// Position returns line and column number of given index of the original input. +// It will panic if index is out of range. +func (d *Decoder) Position(idx int) (line int, column int) { + b := d.orig[:idx] + line = bytes.Count(b, []byte("\n")) + 1 + if i := bytes.LastIndexByte(b, '\n'); i >= 0 { + b = b[i+1:] + } + column = utf8.RuneCount(b) + 1 // ignore multi-rune characters + return line, column +} + +// currPos returns the current index position of d.in from d.orig. +func (d *Decoder) currPos() int { + return len(d.orig) - len(d.in) +} + +// matchWithDelim matches s with the input b and verifies that the match +// terminates with a delimiter of some form (e.g., r"[^-+_.a-zA-Z0-9]"). +// As a special case, EOF is considered a delimiter. It returns the length of s +// if there is a match, else 0. +func matchWithDelim(s string, b []byte) int { + if !bytes.HasPrefix(b, []byte(s)) { + return 0 + } + + n := len(s) + if n < len(b) && isNotDelim(b[n]) { + return 0 + } + return n +} + +// isNotDelim returns true if given byte is a not delimiter character. +func isNotDelim(c byte) bool { + return (c == '-' || c == '+' || c == '.' || c == '_' || + ('a' <= c && c <= 'z') || + ('A' <= c && c <= 'Z') || + ('0' <= c && c <= '9')) +} + +// consume consumes n bytes of input and any subsequent whitespace. +func (d *Decoder) consume(n int) { + d.in = d.in[n:] + for len(d.in) > 0 { + switch d.in[0] { + case ' ', '\n', '\r', '\t': + d.in = d.in[1:] + default: + return + } + } +} + +// isValueNext returns true if next type should be a JSON value: Null, +// Number, String or Bool. +func (d *Decoder) isValueNext() bool { + if len(d.openStack) == 0 { + return d.lastToken.kind == 0 + } + + start := d.openStack[len(d.openStack)-1] + switch start { + case ObjectOpen: + return d.lastToken.kind&Name != 0 + case ArrayOpen: + return d.lastToken.kind&(ArrayOpen|comma) != 0 + } + panic(fmt.Sprintf( + "unreachable logic in Decoder.isValueNext, lastToken.kind: %v, openStack: %v", + d.lastToken.kind, start)) +} + +// consumeToken constructs a Token for given Kind with raw value derived from +// current d.in and given size, and consumes the given size-length of it. +func (d *Decoder) consumeToken(kind Kind, size int) Token { + tok := Token{ + kind: kind, + raw: d.in[:size], + pos: len(d.orig) - len(d.in), + } + d.consume(size) + return tok +} + +// consumeBoolToken constructs a Token for a Bool kind with raw value derived from +// current d.in and given size. +func (d *Decoder) consumeBoolToken(b bool, size int) Token { + tok := Token{ + kind: Bool, + raw: d.in[:size], + pos: len(d.orig) - len(d.in), + boo: b, + } + d.consume(size) + return tok +} + +// consumeStringToken constructs a Token for a String kind with raw value derived +// from current d.in and given size. +func (d *Decoder) consumeStringToken(s string, size int) Token { + tok := Token{ + kind: String, + raw: d.in[:size], + pos: len(d.orig) - len(d.in), + str: s, + } + d.consume(size) + return tok +} + +// Clone returns a copy of the Decoder for use in reading ahead the next JSON +// object, array or other values without affecting current Decoder. +func (d *Decoder) Clone() *Decoder { + ret := *d + ret.openStack = append([]Kind(nil), ret.openStack...) + return &ret +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go new file mode 100644 index 0000000000..2999d71332 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_number.go @@ -0,0 +1,254 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "bytes" + "strconv" +) + +// parseNumber reads the given []byte for a valid JSON number. If it is valid, +// it returns the number of bytes. Parsing logic follows the definition in +// https://tools.ietf.org/html/rfc7159#section-6, and is based off +// encoding/json.isValidNumber function. +func parseNumber(input []byte) (int, bool) { + var n int + + s := input + if len(s) == 0 { + return 0, false + } + + // Optional - + if s[0] == '-' { + s = s[1:] + n++ + if len(s) == 0 { + return 0, false + } + } + + // Digits + switch { + case s[0] == '0': + s = s[1:] + n++ + + case '1' <= s[0] && s[0] <= '9': + s = s[1:] + n++ + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + + default: + return 0, false + } + + // . followed by 1 or more digits. + if len(s) >= 2 && s[0] == '.' && '0' <= s[1] && s[1] <= '9' { + s = s[2:] + n += 2 + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + } + + // e or E followed by an optional - or + and + // 1 or more digits. + if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') { + s = s[1:] + n++ + if s[0] == '+' || s[0] == '-' { + s = s[1:] + n++ + if len(s) == 0 { + return 0, false + } + } + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + } + + // Check that next byte is a delimiter or it is at the end. + if n < len(input) && isNotDelim(input[n]) { + return 0, false + } + + return n, true +} + +// numberParts is the result of parsing out a valid JSON number. It contains +// the parts of a number. The parts are used for integer conversion. +type numberParts struct { + neg bool + intp []byte + frac []byte + exp []byte +} + +// parseNumber constructs numberParts from given []byte. The logic here is +// similar to consumeNumber above with the difference of having to construct +// numberParts. The slice fields in numberParts are subslices of the input. +func parseNumberParts(input []byte) (numberParts, bool) { + var neg bool + var intp []byte + var frac []byte + var exp []byte + + s := input + if len(s) == 0 { + return numberParts{}, false + } + + // Optional - + if s[0] == '-' { + neg = true + s = s[1:] + if len(s) == 0 { + return numberParts{}, false + } + } + + // Digits + switch { + case s[0] == '0': + // Skip first 0 and no need to store. + s = s[1:] + + case '1' <= s[0] && s[0] <= '9': + intp = s + n := 1 + s = s[1:] + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + intp = intp[:n] + + default: + return numberParts{}, false + } + + // . followed by 1 or more digits. + if len(s) >= 2 && s[0] == '.' && '0' <= s[1] && s[1] <= '9' { + frac = s[1:] + n := 1 + s = s[2:] + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + frac = frac[:n] + } + + // e or E followed by an optional - or + and + // 1 or more digits. + if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') { + s = s[1:] + exp = s + n := 0 + if s[0] == '+' || s[0] == '-' { + s = s[1:] + n++ + if len(s) == 0 { + return numberParts{}, false + } + } + for len(s) > 0 && '0' <= s[0] && s[0] <= '9' { + s = s[1:] + n++ + } + exp = exp[:n] + } + + return numberParts{ + neg: neg, + intp: intp, + frac: bytes.TrimRight(frac, "0"), // Remove unnecessary 0s to the right. + exp: exp, + }, true +} + +// normalizeToIntString returns an integer string in normal form without the +// E-notation for given numberParts. It will return false if it is not an +// integer or if the exponent exceeds than max/min int value. +func normalizeToIntString(n numberParts) (string, bool) { + intpSize := len(n.intp) + fracSize := len(n.frac) + + if intpSize == 0 && fracSize == 0 { + return "0", true + } + + var exp int + if len(n.exp) > 0 { + i, err := strconv.ParseInt(string(n.exp), 10, 32) + if err != nil { + return "", false + } + exp = int(i) + } + + var num []byte + if exp >= 0 { + // For positive E, shift fraction digits into integer part and also pad + // with zeroes as needed. + + // If there are more digits in fraction than the E value, then the + // number is not an integer. + if fracSize > exp { + return "", false + } + + // Make sure resulting digits are within max value limit to avoid + // unnecessarily constructing a large byte slice that may simply fail + // later on. + const maxDigits = 20 // Max uint64 value has 20 decimal digits. + if intpSize+exp > maxDigits { + return "", false + } + + // Set cap to make a copy of integer part when appended. + num = n.intp[:len(n.intp):len(n.intp)] + num = append(num, n.frac...) + for i := 0; i < exp-fracSize; i++ { + num = append(num, '0') + } + } else { + // For negative E, shift digits in integer part out. + + // If there are fractions, then the number is not an integer. + if fracSize > 0 { + return "", false + } + + // index is where the decimal point will be after adjusting for negative + // exponent. + index := intpSize + exp + if index < 0 { + return "", false + } + + num = n.intp + // If any of the digits being shifted to the right of the decimal point + // is non-zero, then the number is not an integer. + for i := index; i < intpSize; i++ { + if num[i] != '0' { + return "", false + } + } + num = num[:index] + } + + if n.neg { + return "-" + string(num), true + } + return string(num), true +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go new file mode 100644 index 0000000000..f7fea7d8dd --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go @@ -0,0 +1,91 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "strconv" + "unicode" + "unicode/utf16" + "unicode/utf8" + + "google.golang.org/protobuf/internal/strs" +) + +func (d *Decoder) parseString(in []byte) (string, int, error) { + in0 := in + if len(in) == 0 { + return "", 0, ErrUnexpectedEOF + } + if in[0] != '"' { + return "", 0, d.newSyntaxError(d.currPos(), "invalid character %q at start of string", in[0]) + } + in = in[1:] + i := indexNeedEscapeInBytes(in) + in, out := in[i:], in[:i:i] // set cap to prevent mutations + for len(in) > 0 { + switch r, n := utf8.DecodeRune(in); { + case r == utf8.RuneError && n == 1: + return "", 0, d.newSyntaxError(d.currPos(), "invalid UTF-8 in string") + case r < ' ': + return "", 0, d.newSyntaxError(d.currPos(), "invalid character %q in string", r) + case r == '"': + in = in[1:] + n := len(in0) - len(in) + return string(out), n, nil + case r == '\\': + if len(in) < 2 { + return "", 0, ErrUnexpectedEOF + } + switch r := in[1]; r { + case '"', '\\', '/': + in, out = in[2:], append(out, r) + case 'b': + in, out = in[2:], append(out, '\b') + case 'f': + in, out = in[2:], append(out, '\f') + case 'n': + in, out = in[2:], append(out, '\n') + case 'r': + in, out = in[2:], append(out, '\r') + case 't': + in, out = in[2:], append(out, '\t') + case 'u': + if len(in) < 6 { + return "", 0, ErrUnexpectedEOF + } + v, err := strconv.ParseUint(string(in[2:6]), 16, 16) + if err != nil { + return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:6]) + } + in = in[6:] + + r := rune(v) + if utf16.IsSurrogate(r) { + if len(in) < 6 { + return "", 0, ErrUnexpectedEOF + } + v, err := strconv.ParseUint(string(in[2:6]), 16, 16) + r = utf16.DecodeRune(r, rune(v)) + if in[0] != '\\' || in[1] != 'u' || + r == unicode.ReplacementChar || err != nil { + return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:6]) + } + in = in[6:] + } + out = append(out, string(r)...) + default: + return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:2]) + } + default: + i := indexNeedEscapeInBytes(in[n:]) + in, out = in[n+i:], append(out, in[:n+i]...) + } + } + return "", 0, ErrUnexpectedEOF +} + +// indexNeedEscapeInBytes returns the index of the character that needs +// escaping. If no characters need escaping, this returns the input length. +func indexNeedEscapeInBytes(b []byte) int { return indexNeedEscapeInString(strs.UnsafeString(b)) } diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go new file mode 100644 index 0000000000..50578d6593 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_token.go @@ -0,0 +1,192 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "bytes" + "fmt" + "strconv" +) + +// Kind represents a token kind expressible in the JSON format. +type Kind uint16 + +const ( + Invalid Kind = (1 << iota) / 2 + EOF + Null + Bool + Number + String + Name + ObjectOpen + ObjectClose + ArrayOpen + ArrayClose + + // comma is only for parsing in between tokens and + // does not need to be exported. + comma +) + +func (k Kind) String() string { + switch k { + case EOF: + return "eof" + case Null: + return "null" + case Bool: + return "bool" + case Number: + return "number" + case String: + return "string" + case ObjectOpen: + return "{" + case ObjectClose: + return "}" + case Name: + return "name" + case ArrayOpen: + return "[" + case ArrayClose: + return "]" + case comma: + return "," + } + return "" +} + +// Token provides a parsed token kind and value. +// +// Values are provided by the difference accessor methods. The accessor methods +// Name, Bool, and ParsedString will panic if called on the wrong kind. There +// are different accessor methods for the Number kind for converting to the +// appropriate Go numeric type and those methods have the ok return value. +type Token struct { + // Token kind. + kind Kind + // pos provides the position of the token in the original input. + pos int + // raw bytes of the serialized token. + // This is a subslice into the original input. + raw []byte + // boo is parsed boolean value. + boo bool + // str is parsed string value. + str string +} + +// Kind returns the token kind. +func (t Token) Kind() Kind { + return t.kind +} + +// RawString returns the read value in string. +func (t Token) RawString() string { + return string(t.raw) +} + +// Pos returns the token position from the input. +func (t Token) Pos() int { + return t.pos +} + +// Name returns the object name if token is Name, else it panics. +func (t Token) Name() string { + if t.kind == Name { + return t.str + } + panic(fmt.Sprintf("Token is not a Name: %v", t.RawString())) +} + +// Bool returns the bool value if token kind is Bool, else it panics. +func (t Token) Bool() bool { + if t.kind == Bool { + return t.boo + } + panic(fmt.Sprintf("Token is not a Bool: %v", t.RawString())) +} + +// ParsedString returns the string value for a JSON string token or the read +// value in string if token is not a string. +func (t Token) ParsedString() string { + if t.kind == String { + return t.str + } + panic(fmt.Sprintf("Token is not a String: %v", t.RawString())) +} + +// Float returns the floating-point number if token kind is Number. +// +// The floating-point precision is specified by the bitSize parameter: 32 for +// float32 or 64 for float64. If bitSize=32, the result still has type float64, +// but it will be convertible to float32 without changing its value. It will +// return false if the number exceeds the floating point limits for given +// bitSize. +func (t Token) Float(bitSize int) (float64, bool) { + if t.kind != Number { + return 0, false + } + f, err := strconv.ParseFloat(t.RawString(), bitSize) + if err != nil { + return 0, false + } + return f, true +} + +// Int returns the signed integer number if token is Number. +// +// The given bitSize specifies the integer type that the result must fit into. +// It returns false if the number is not an integer value or if the result +// exceeds the limits for given bitSize. +func (t Token) Int(bitSize int) (int64, bool) { + s, ok := t.getIntStr() + if !ok { + return 0, false + } + n, err := strconv.ParseInt(s, 10, bitSize) + if err != nil { + return 0, false + } + return n, true +} + +// Uint returns the signed integer number if token is Number. +// +// The given bitSize specifies the unsigned integer type that the result must +// fit into. It returns false if the number is not an unsigned integer value +// or if the result exceeds the limits for given bitSize. +func (t Token) Uint(bitSize int) (uint64, bool) { + s, ok := t.getIntStr() + if !ok { + return 0, false + } + n, err := strconv.ParseUint(s, 10, bitSize) + if err != nil { + return 0, false + } + return n, true +} + +func (t Token) getIntStr() (string, bool) { + if t.kind != Number { + return "", false + } + parts, ok := parseNumberParts(t.raw) + if !ok { + return "", false + } + return normalizeToIntString(parts) +} + +// TokenEquals returns true if given Tokens are equal, else false. +func TokenEquals(x, y Token) bool { + return x.kind == y.kind && + x.pos == y.pos && + bytes.Equal(x.raw, y.raw) && + x.boo == y.boo && + x.str == y.str +} diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/encode.go b/vendor/google.golang.org/protobuf/internal/encoding/json/encode.go new file mode 100644 index 0000000000..934f2dcb39 --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/encoding/json/encode.go @@ -0,0 +1,278 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package json + +import ( + "math" + "math/bits" + "strconv" + "strings" + "unicode/utf8" + + "google.golang.org/protobuf/internal/detrand" + "google.golang.org/protobuf/internal/errors" +) + +// kind represents an encoding type. +type kind uint8 + +const ( + _ kind = (1 << iota) / 2 + name + scalar + objectOpen + objectClose + arrayOpen + arrayClose +) + +// Encoder provides methods to write out JSON constructs and values. The user is +// responsible for producing valid sequences of JSON constructs and values. +type Encoder struct { + indent string + lastKind kind + indents []byte + out []byte +} + +// NewEncoder returns an Encoder. +// +// If indent is a non-empty string, it causes every entry for an Array or Object +// to be preceded by the indent and trailed by a newline. +func NewEncoder(buf []byte, indent string) (*Encoder, error) { + e := &Encoder{ + out: buf, + } + if len(indent) > 0 { + if strings.Trim(indent, " \t") != "" { + return nil, errors.New("indent may only be composed of space or tab characters") + } + e.indent = indent + } + return e, nil +} + +// Bytes returns the content of the written bytes. +func (e *Encoder) Bytes() []byte { + return e.out +} + +// WriteNull writes out the null value. +func (e *Encoder) WriteNull() { + e.prepareNext(scalar) + e.out = append(e.out, "null"...) +} + +// WriteBool writes out the given boolean value. +func (e *Encoder) WriteBool(b bool) { + e.prepareNext(scalar) + if b { + e.out = append(e.out, "true"...) + } else { + e.out = append(e.out, "false"...) + } +} + +// WriteString writes out the given string in JSON string value. Returns error +// if input string contains invalid UTF-8. +func (e *Encoder) WriteString(s string) error { + e.prepareNext(scalar) + var err error + if e.out, err = appendString(e.out, s); err != nil { + return err + } + return nil +} + +// Sentinel error used for indicating invalid UTF-8. +var errInvalidUTF8 = errors.New("invalid UTF-8") + +func appendString(out []byte, in string) ([]byte, error) { + out = append(out, '"') + i := indexNeedEscapeInString(in) + in, out = in[i:], append(out, in[:i]...) + for len(in) > 0 { + switch r, n := utf8.DecodeRuneInString(in); { + case r == utf8.RuneError && n == 1: + return out, errInvalidUTF8 + case r < ' ' || r == '"' || r == '\\': + out = append(out, '\\') + switch r { + case '"', '\\': + out = append(out, byte(r)) + case '\b': + out = append(out, 'b') + case '\f': + out = append(out, 'f') + case '\n': + out = append(out, 'n') + case '\r': + out = append(out, 'r') + case '\t': + out = append(out, 't') + default: + out = append(out, 'u') + out = append(out, "0000"[1+(bits.Len32(uint32(r))-1)/4:]...) + out = strconv.AppendUint(out, uint64(r), 16) + } + in = in[n:] + default: + i := indexNeedEscapeInString(in[n:]) + in, out = in[n+i:], append(out, in[:n+i]...) + } + } + out = append(out, '"') + return out, nil +} + +// indexNeedEscapeInString returns the index of the character that needs +// escaping. If no characters need escaping, this returns the input length. +func indexNeedEscapeInString(s string) int { + for i, r := range s { + if r < ' ' || r == '\\' || r == '"' || r == utf8.RuneError { + return i + } + } + return len(s) +} + +// WriteFloat writes out the given float and bitSize in JSON number value. +func (e *Encoder) WriteFloat(n float64, bitSize int) { + e.prepareNext(scalar) + e.out = appendFloat(e.out, n, bitSize) +} + +// appendFloat formats given float in bitSize, and appends to the given []byte. +func appendFloat(out []byte, n float64, bitSize int) []byte { + switch { + case math.IsNaN(n): + return append(out, `"NaN"`...) + case math.IsInf(n, +1): + return append(out, `"Infinity"`...) + case math.IsInf(n, -1): + return append(out, `"-Infinity"`...) + } + + // JSON number formatting logic based on encoding/json. + // See floatEncoder.encode for reference. + fmt := byte('f') + if abs := math.Abs(n); abs != 0 { + if bitSize == 64 && (abs < 1e-6 || abs >= 1e21) || + bitSize == 32 && (float32(abs) < 1e-6 || float32(abs) >= 1e21) { + fmt = 'e' + } + } + out = strconv.AppendFloat(out, n, fmt, -1, bitSize) + if fmt == 'e' { + n := len(out) + if n >= 4 && out[n-4] == 'e' && out[n-3] == '-' && out[n-2] == '0' { + out[n-2] = out[n-1] + out = out[:n-1] + } + } + return out +} + +// WriteInt writes out the given signed integer in JSON number value. +func (e *Encoder) WriteInt(n int64) { + e.prepareNext(scalar) + e.out = strconv.AppendInt(e.out, n, 10) +} + +// WriteUint writes out the given unsigned integer in JSON number value. +func (e *Encoder) WriteUint(n uint64) { + e.prepareNext(scalar) + e.out = strconv.AppendUint(e.out, n, 10) +} + +// StartObject writes out the '{' symbol. +func (e *Encoder) StartObject() { + e.prepareNext(objectOpen) + e.out = append(e.out, '{') +} + +// EndObject writes out the '}' symbol. +func (e *Encoder) EndObject() { + e.prepareNext(objectClose) + e.out = append(e.out, '}') +} + +// WriteName writes out the given string in JSON string value and the name +// separator ':'. Returns error if input string contains invalid UTF-8, which +// should not be likely as protobuf field names should be valid. +func (e *Encoder) WriteName(s string) error { + e.prepareNext(name) + var err error + // Append to output regardless of error. + e.out, err = appendString(e.out, s) + e.out = append(e.out, ':') + return err +} + +// StartArray writes out the '[' symbol. +func (e *Encoder) StartArray() { + e.prepareNext(arrayOpen) + e.out = append(e.out, '[') +} + +// EndArray writes out the ']' symbol. +func (e *Encoder) EndArray() { + e.prepareNext(arrayClose) + e.out = append(e.out, ']') +} + +// prepareNext adds possible comma and indentation for the next value based +// on last type and indent option. It also updates lastKind to next. +func (e *Encoder) prepareNext(next kind) { + defer func() { + // Set lastKind to next. + e.lastKind = next + }() + + if len(e.indent) == 0 { + // Need to add comma on the following condition. + if e.lastKind&(scalar|objectClose|arrayClose) != 0 && + next&(name|scalar|objectOpen|arrayOpen) != 0 { + e.out = append(e.out, ',') + // For single-line output, add a random extra space after each + // comma to make output unstable. + if detrand.Bool() { + e.out = append(e.out, ' ') + } + } + return + } + + switch { + case e.lastKind&(objectOpen|arrayOpen) != 0: + // If next type is NOT closing, add indent and newline. + if next&(objectClose|arrayClose) == 0 { + e.indents = append(e.indents, e.indent...) + e.out = append(e.out, '\n') + e.out = append(e.out, e.indents...) + } + + case e.lastKind&(scalar|objectClose|arrayClose) != 0: + switch { + // If next type is either a value or name, add comma and newline. + case next&(name|scalar|objectOpen|arrayOpen) != 0: + e.out = append(e.out, ',', '\n') + + // If next type is a closing object or array, adjust indentation. + case next&(objectClose|arrayClose) != 0: + e.indents = e.indents[:len(e.indents)-len(e.indent)] + e.out = append(e.out, '\n') + } + e.out = append(e.out, e.indents...) + + case e.lastKind&name != 0: + e.out = append(e.out, ' ') + // For multi-line output, add a random extra space after key: to make + // output unstable. + if detrand.Bool() { + e.out = append(e.out, ' ') + } + } +} diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go new file mode 100644 index 0000000000..823dbf3ba6 --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go @@ -0,0 +1,286 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package protodesc provides functionality for converting +// FileDescriptorProto messages to/from [protoreflect.FileDescriptor] values. +// +// The google.protobuf.FileDescriptorProto is a protobuf message that describes +// the type information for a .proto file in a form that is easily serializable. +// The [protoreflect.FileDescriptor] is a more structured representation of +// the FileDescriptorProto message where references and remote dependencies +// can be directly followed. +package protodesc + +import ( + "strings" + + "google.golang.org/protobuf/internal/editionssupport" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/pragma" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" + + "google.golang.org/protobuf/types/descriptorpb" +) + +// Resolver is the resolver used by [NewFile] to resolve dependencies. +// The enums and messages provided must belong to some parent file, +// which is also registered. +// +// It is implemented by [protoregistry.Files]. +type Resolver interface { + FindFileByPath(string) (protoreflect.FileDescriptor, error) + FindDescriptorByName(protoreflect.FullName) (protoreflect.Descriptor, error) +} + +// FileOptions configures the construction of file descriptors. +type FileOptions struct { + pragma.NoUnkeyedLiterals + + // AllowUnresolvable configures New to permissively allow unresolvable + // file, enum, or message dependencies. Unresolved dependencies are replaced + // by placeholder equivalents. + // + // The following dependencies may be left unresolved: + // • Resolving an imported file. + // • Resolving the type for a message field or extension field. + // If the kind of the field is unknown, then a placeholder is used for both + // the Enum and Message accessors on the protoreflect.FieldDescriptor. + // • Resolving an enum value set as the default for an optional enum field. + // If unresolvable, the protoreflect.FieldDescriptor.Default is set to the + // first value in the associated enum (or zero if the also enum dependency + // is also unresolvable). The protoreflect.FieldDescriptor.DefaultEnumValue + // is populated with a placeholder. + // • Resolving the extended message type for an extension field. + // • Resolving the input or output message type for a service method. + // + // If the unresolved dependency uses a relative name, + // then the placeholder will contain an invalid FullName with a "*." prefix, + // indicating that the starting prefix of the full name is unknown. + AllowUnresolvable bool +} + +// NewFile creates a new [protoreflect.FileDescriptor] from the provided +// file descriptor message. See [FileOptions.New] for more information. +func NewFile(fd *descriptorpb.FileDescriptorProto, r Resolver) (protoreflect.FileDescriptor, error) { + return FileOptions{}.New(fd, r) +} + +// NewFiles creates a new [protoregistry.Files] from the provided +// FileDescriptorSet message. See [FileOptions.NewFiles] for more information. +func NewFiles(fd *descriptorpb.FileDescriptorSet) (*protoregistry.Files, error) { + return FileOptions{}.NewFiles(fd) +} + +// New creates a new [protoreflect.FileDescriptor] from the provided +// file descriptor message. The file must represent a valid proto file according +// to protobuf semantics. The returned descriptor is a deep copy of the input. +// +// Any imported files, enum types, or message types referenced in the file are +// resolved using the provided registry. When looking up an import file path, +// the path must be unique. The newly created file descriptor is not registered +// back into the provided file registry. +func (o FileOptions) New(fd *descriptorpb.FileDescriptorProto, r Resolver) (protoreflect.FileDescriptor, error) { + if r == nil { + r = (*protoregistry.Files)(nil) // empty resolver + } + + // Handle the file descriptor content. + f := &filedesc.File{L2: &filedesc.FileL2{}} + switch fd.GetSyntax() { + case "proto2", "": + f.L1.Syntax = protoreflect.Proto2 + f.L1.Edition = filedesc.EditionProto2 + case "proto3": + f.L1.Syntax = protoreflect.Proto3 + f.L1.Edition = filedesc.EditionProto3 + case "editions": + f.L1.Syntax = protoreflect.Editions + f.L1.Edition = fromEditionProto(fd.GetEdition()) + default: + return nil, errors.New("invalid syntax: %q", fd.GetSyntax()) + } + f.L1.Path = fd.GetName() + if f.L1.Path == "" { + return nil, errors.New("file path must be populated") + } + if f.L1.Syntax == protoreflect.Editions && (fd.GetEdition() < editionssupport.Minimum || fd.GetEdition() > editionssupport.Maximum) { + // Allow cmd/protoc-gen-go/testdata to use any edition for easier + // testing of upcoming edition features. + if !strings.HasPrefix(fd.GetName(), "cmd/protoc-gen-go/testdata/") { + return nil, errors.New("use of edition %v not yet supported by the Go Protobuf runtime", fd.GetEdition()) + } + } + f.L1.Package = protoreflect.FullName(fd.GetPackage()) + if !f.L1.Package.IsValid() && f.L1.Package != "" { + return nil, errors.New("invalid package: %q", f.L1.Package) + } + if opts := fd.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.FileOptions) + f.L2.Options = func() protoreflect.ProtoMessage { return opts } + } + initFileDescFromFeatureSet(f, fd.GetOptions().GetFeatures()) + + f.L2.Imports = make(filedesc.FileImports, len(fd.GetDependency())) + for _, i := range fd.GetPublicDependency() { + if !(0 <= i && int(i) < len(f.L2.Imports)) || f.L2.Imports[i].IsPublic { + return nil, errors.New("invalid or duplicate public import index: %d", i) + } + f.L2.Imports[i].IsPublic = true + } + imps := importSet{f.Path(): true} + for i, path := range fd.GetDependency() { + imp := &f.L2.Imports[i] + f, err := r.FindFileByPath(path) + if err == protoregistry.NotFound && o.AllowUnresolvable { + f = filedesc.PlaceholderFile(path) + } else if err != nil { + return nil, errors.New("could not resolve import %q: %v", path, err) + } + imp.FileDescriptor = f + + if imps[imp.Path()] { + return nil, errors.New("already imported %q", path) + } + imps[imp.Path()] = true + } + for i := range fd.GetDependency() { + imp := &f.L2.Imports[i] + imps.importPublic(imp.Imports()) + } + + // Handle source locations. + f.L2.Locations.File = f + for _, loc := range fd.GetSourceCodeInfo().GetLocation() { + var l protoreflect.SourceLocation + // TODO: Validate that the path points to an actual declaration? + l.Path = protoreflect.SourcePath(loc.GetPath()) + s := loc.GetSpan() + switch len(s) { + case 3: + l.StartLine, l.StartColumn, l.EndLine, l.EndColumn = int(s[0]), int(s[1]), int(s[0]), int(s[2]) + case 4: + l.StartLine, l.StartColumn, l.EndLine, l.EndColumn = int(s[0]), int(s[1]), int(s[2]), int(s[3]) + default: + return nil, errors.New("invalid span: %v", s) + } + // TODO: Validate that the span information is sensible? + // See https://github.com/protocolbuffers/protobuf/issues/6378. + if false && (l.EndLine < l.StartLine || l.StartLine < 0 || l.StartColumn < 0 || l.EndColumn < 0 || + (l.StartLine == l.EndLine && l.EndColumn <= l.StartColumn)) { + return nil, errors.New("invalid span: %v", s) + } + l.LeadingDetachedComments = loc.GetLeadingDetachedComments() + l.LeadingComments = loc.GetLeadingComments() + l.TrailingComments = loc.GetTrailingComments() + f.L2.Locations.List = append(f.L2.Locations.List, l) + } + + // Step 1: Allocate and derive the names for all declarations. + // This copies all fields from the descriptor proto except: + // google.protobuf.FieldDescriptorProto.type_name + // google.protobuf.FieldDescriptorProto.default_value + // google.protobuf.FieldDescriptorProto.oneof_index + // google.protobuf.FieldDescriptorProto.extendee + // google.protobuf.MethodDescriptorProto.input + // google.protobuf.MethodDescriptorProto.output + var err error + sb := new(strs.Builder) + r1 := make(descsByName) + if f.L1.Enums.List, err = r1.initEnumDeclarations(fd.GetEnumType(), f, sb); err != nil { + return nil, err + } + if f.L1.Messages.List, err = r1.initMessagesDeclarations(fd.GetMessageType(), f, sb); err != nil { + return nil, err + } + if f.L1.Extensions.List, err = r1.initExtensionDeclarations(fd.GetExtension(), f, sb); err != nil { + return nil, err + } + if f.L1.Services.List, err = r1.initServiceDeclarations(fd.GetService(), f, sb); err != nil { + return nil, err + } + + // Step 2: Resolve every dependency reference not handled by step 1. + r2 := &resolver{local: r1, remote: r, imports: imps, allowUnresolvable: o.AllowUnresolvable} + if err := r2.resolveMessageDependencies(f.L1.Messages.List, fd.GetMessageType()); err != nil { + return nil, err + } + if err := r2.resolveExtensionDependencies(f.L1.Extensions.List, fd.GetExtension()); err != nil { + return nil, err + } + if err := r2.resolveServiceDependencies(f.L1.Services.List, fd.GetService()); err != nil { + return nil, err + } + + // Step 3: Validate every enum, message, and extension declaration. + if err := validateEnumDeclarations(f.L1.Enums.List, fd.GetEnumType()); err != nil { + return nil, err + } + if err := validateMessageDeclarations(f, f.L1.Messages.List, fd.GetMessageType()); err != nil { + return nil, err + } + if err := validateExtensionDeclarations(f, f.L1.Extensions.List, fd.GetExtension()); err != nil { + return nil, err + } + + return f, nil +} + +type importSet map[string]bool + +func (is importSet) importPublic(imps protoreflect.FileImports) { + for i := 0; i < imps.Len(); i++ { + if imp := imps.Get(i); imp.IsPublic { + is[imp.Path()] = true + is.importPublic(imp.Imports()) + } + } +} + +// NewFiles creates a new [protoregistry.Files] from the provided +// FileDescriptorSet message. The descriptor set must include only +// valid files according to protobuf semantics. The returned descriptors +// are a deep copy of the input. +func (o FileOptions) NewFiles(fds *descriptorpb.FileDescriptorSet) (*protoregistry.Files, error) { + files := make(map[string]*descriptorpb.FileDescriptorProto) + for _, fd := range fds.File { + if _, ok := files[fd.GetName()]; ok { + return nil, errors.New("file appears multiple times: %q", fd.GetName()) + } + files[fd.GetName()] = fd + } + r := &protoregistry.Files{} + for _, fd := range files { + if err := o.addFileDeps(r, fd, files); err != nil { + return nil, err + } + } + return r, nil +} +func (o FileOptions) addFileDeps(r *protoregistry.Files, fd *descriptorpb.FileDescriptorProto, files map[string]*descriptorpb.FileDescriptorProto) error { + // Set the entry to nil while descending into a file's dependencies to detect cycles. + files[fd.GetName()] = nil + for _, dep := range fd.Dependency { + depfd, ok := files[dep] + if depfd == nil { + if ok { + return errors.New("import cycle in file: %q", dep) + } + continue + } + if err := o.addFileDeps(r, depfd, files); err != nil { + return err + } + } + // Delete the entry once dependencies are processed. + delete(files, fd.GetName()) + f, err := o.New(fd, r) + if err != nil { + return err + } + return r.RegisterFile(f) +} diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_init.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_init.go new file mode 100644 index 0000000000..9da34998b1 --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_init.go @@ -0,0 +1,288 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protodesc + +import ( + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + "google.golang.org/protobuf/types/descriptorpb" +) + +type descsByName map[protoreflect.FullName]protoreflect.Descriptor + +func (r descsByName) initEnumDeclarations(eds []*descriptorpb.EnumDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (es []filedesc.Enum, err error) { + es = make([]filedesc.Enum, len(eds)) // allocate up-front to ensure stable pointers + for i, ed := range eds { + e := &es[i] + e.L2 = new(filedesc.EnumL2) + if e.L0, err = r.makeBase(e, parent, ed.GetName(), i, sb); err != nil { + return nil, err + } + if opts := ed.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.EnumOptions) + e.L2.Options = func() protoreflect.ProtoMessage { return opts } + } + e.L1.EditionFeatures = mergeEditionFeatures(parent, ed.GetOptions().GetFeatures()) + for _, s := range ed.GetReservedName() { + e.L2.ReservedNames.List = append(e.L2.ReservedNames.List, protoreflect.Name(s)) + } + for _, rr := range ed.GetReservedRange() { + e.L2.ReservedRanges.List = append(e.L2.ReservedRanges.List, [2]protoreflect.EnumNumber{ + protoreflect.EnumNumber(rr.GetStart()), + protoreflect.EnumNumber(rr.GetEnd()), + }) + } + if e.L2.Values.List, err = r.initEnumValuesFromDescriptorProto(ed.GetValue(), e, sb); err != nil { + return nil, err + } + } + return es, nil +} + +func (r descsByName) initEnumValuesFromDescriptorProto(vds []*descriptorpb.EnumValueDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (vs []filedesc.EnumValue, err error) { + vs = make([]filedesc.EnumValue, len(vds)) // allocate up-front to ensure stable pointers + for i, vd := range vds { + v := &vs[i] + if v.L0, err = r.makeBase(v, parent, vd.GetName(), i, sb); err != nil { + return nil, err + } + if opts := vd.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.EnumValueOptions) + v.L1.Options = func() protoreflect.ProtoMessage { return opts } + } + v.L1.Number = protoreflect.EnumNumber(vd.GetNumber()) + } + return vs, nil +} + +func (r descsByName) initMessagesDeclarations(mds []*descriptorpb.DescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (ms []filedesc.Message, err error) { + ms = make([]filedesc.Message, len(mds)) // allocate up-front to ensure stable pointers + for i, md := range mds { + m := &ms[i] + m.L2 = new(filedesc.MessageL2) + if m.L0, err = r.makeBase(m, parent, md.GetName(), i, sb); err != nil { + return nil, err + } + m.L1.EditionFeatures = mergeEditionFeatures(parent, md.GetOptions().GetFeatures()) + if opts := md.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.MessageOptions) + m.L2.Options = func() protoreflect.ProtoMessage { return opts } + m.L1.IsMapEntry = opts.GetMapEntry() + m.L1.IsMessageSet = opts.GetMessageSetWireFormat() + } + for _, s := range md.GetReservedName() { + m.L2.ReservedNames.List = append(m.L2.ReservedNames.List, protoreflect.Name(s)) + } + for _, rr := range md.GetReservedRange() { + m.L2.ReservedRanges.List = append(m.L2.ReservedRanges.List, [2]protoreflect.FieldNumber{ + protoreflect.FieldNumber(rr.GetStart()), + protoreflect.FieldNumber(rr.GetEnd()), + }) + } + for _, xr := range md.GetExtensionRange() { + m.L2.ExtensionRanges.List = append(m.L2.ExtensionRanges.List, [2]protoreflect.FieldNumber{ + protoreflect.FieldNumber(xr.GetStart()), + protoreflect.FieldNumber(xr.GetEnd()), + }) + var optsFunc func() protoreflect.ProtoMessage + if opts := xr.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.ExtensionRangeOptions) + optsFunc = func() protoreflect.ProtoMessage { return opts } + } + m.L2.ExtensionRangeOptions = append(m.L2.ExtensionRangeOptions, optsFunc) + } + if m.L2.Fields.List, err = r.initFieldsFromDescriptorProto(md.GetField(), m, sb); err != nil { + return nil, err + } + if m.L2.Oneofs.List, err = r.initOneofsFromDescriptorProto(md.GetOneofDecl(), m, sb); err != nil { + return nil, err + } + if m.L1.Enums.List, err = r.initEnumDeclarations(md.GetEnumType(), m, sb); err != nil { + return nil, err + } + if m.L1.Messages.List, err = r.initMessagesDeclarations(md.GetNestedType(), m, sb); err != nil { + return nil, err + } + if m.L1.Extensions.List, err = r.initExtensionDeclarations(md.GetExtension(), m, sb); err != nil { + return nil, err + } + } + return ms, nil +} + +// canBePacked returns whether the field can use packed encoding: +// https://protobuf.dev/programming-guides/encoding/#packed +func canBePacked(fd *descriptorpb.FieldDescriptorProto) bool { + if fd.GetLabel() != descriptorpb.FieldDescriptorProto_LABEL_REPEATED { + return false // not a repeated field + } + + switch protoreflect.Kind(fd.GetType()) { + case protoreflect.MessageKind, protoreflect.GroupKind: + return false // not a scalar type field + + case protoreflect.StringKind, protoreflect.BytesKind: + // string and bytes can explicitly not be declared as packed, + // see https://protobuf.dev/programming-guides/encoding/#packed + return false + + default: + return true + } +} + +func (r descsByName) initFieldsFromDescriptorProto(fds []*descriptorpb.FieldDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (fs []filedesc.Field, err error) { + fs = make([]filedesc.Field, len(fds)) // allocate up-front to ensure stable pointers + for i, fd := range fds { + f := &fs[i] + if f.L0, err = r.makeBase(f, parent, fd.GetName(), i, sb); err != nil { + return nil, err + } + f.L1.EditionFeatures = mergeEditionFeatures(parent, fd.GetOptions().GetFeatures()) + f.L1.IsProto3Optional = fd.GetProto3Optional() + if opts := fd.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.FieldOptions) + f.L1.Options = func() protoreflect.ProtoMessage { return opts } + f.L1.IsLazy = opts.GetLazy() + if opts.Packed != nil { + f.L1.EditionFeatures.IsPacked = opts.GetPacked() + } + } + f.L1.Number = protoreflect.FieldNumber(fd.GetNumber()) + f.L1.Cardinality = protoreflect.Cardinality(fd.GetLabel()) + if fd.Type != nil { + f.L1.Kind = protoreflect.Kind(fd.GetType()) + } + if fd.JsonName != nil { + f.L1.StringName.InitJSON(fd.GetJsonName()) + } + + if f.L1.EditionFeatures.IsLegacyRequired { + f.L1.Cardinality = protoreflect.Required + } + + if f.L1.Kind == protoreflect.MessageKind && f.L1.EditionFeatures.IsDelimitedEncoded { + f.L1.Kind = protoreflect.GroupKind + } + } + return fs, nil +} + +func (r descsByName) initOneofsFromDescriptorProto(ods []*descriptorpb.OneofDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (os []filedesc.Oneof, err error) { + os = make([]filedesc.Oneof, len(ods)) // allocate up-front to ensure stable pointers + for i, od := range ods { + o := &os[i] + if o.L0, err = r.makeBase(o, parent, od.GetName(), i, sb); err != nil { + return nil, err + } + o.L1.EditionFeatures = mergeEditionFeatures(parent, od.GetOptions().GetFeatures()) + if opts := od.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.OneofOptions) + o.L1.Options = func() protoreflect.ProtoMessage { return opts } + } + } + return os, nil +} + +func (r descsByName) initExtensionDeclarations(xds []*descriptorpb.FieldDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (xs []filedesc.Extension, err error) { + xs = make([]filedesc.Extension, len(xds)) // allocate up-front to ensure stable pointers + for i, xd := range xds { + x := &xs[i] + x.L2 = new(filedesc.ExtensionL2) + if x.L0, err = r.makeBase(x, parent, xd.GetName(), i, sb); err != nil { + return nil, err + } + x.L1.EditionFeatures = mergeEditionFeatures(parent, xd.GetOptions().GetFeatures()) + if opts := xd.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.FieldOptions) + x.L2.Options = func() protoreflect.ProtoMessage { return opts } + if opts.Packed != nil { + x.L1.EditionFeatures.IsPacked = opts.GetPacked() + } + } + x.L1.Number = protoreflect.FieldNumber(xd.GetNumber()) + x.L1.Cardinality = protoreflect.Cardinality(xd.GetLabel()) + if xd.Type != nil { + x.L1.Kind = protoreflect.Kind(xd.GetType()) + } + if xd.JsonName != nil { + x.L2.StringName.InitJSON(xd.GetJsonName()) + } + if x.L1.Kind == protoreflect.MessageKind && x.L1.EditionFeatures.IsDelimitedEncoded { + x.L1.Kind = protoreflect.GroupKind + } + } + return xs, nil +} + +func (r descsByName) initServiceDeclarations(sds []*descriptorpb.ServiceDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (ss []filedesc.Service, err error) { + ss = make([]filedesc.Service, len(sds)) // allocate up-front to ensure stable pointers + for i, sd := range sds { + s := &ss[i] + s.L2 = new(filedesc.ServiceL2) + if s.L0, err = r.makeBase(s, parent, sd.GetName(), i, sb); err != nil { + return nil, err + } + if opts := sd.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.ServiceOptions) + s.L2.Options = func() protoreflect.ProtoMessage { return opts } + } + if s.L2.Methods.List, err = r.initMethodsFromDescriptorProto(sd.GetMethod(), s, sb); err != nil { + return nil, err + } + } + return ss, nil +} + +func (r descsByName) initMethodsFromDescriptorProto(mds []*descriptorpb.MethodDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (ms []filedesc.Method, err error) { + ms = make([]filedesc.Method, len(mds)) // allocate up-front to ensure stable pointers + for i, md := range mds { + m := &ms[i] + if m.L0, err = r.makeBase(m, parent, md.GetName(), i, sb); err != nil { + return nil, err + } + if opts := md.GetOptions(); opts != nil { + opts = proto.Clone(opts).(*descriptorpb.MethodOptions) + m.L1.Options = func() protoreflect.ProtoMessage { return opts } + } + m.L1.IsStreamingClient = md.GetClientStreaming() + m.L1.IsStreamingServer = md.GetServerStreaming() + } + return ms, nil +} + +func (r descsByName) makeBase(child, parent protoreflect.Descriptor, name string, idx int, sb *strs.Builder) (filedesc.BaseL0, error) { + if !protoreflect.Name(name).IsValid() { + return filedesc.BaseL0{}, errors.New("descriptor %q has an invalid nested name: %q", parent.FullName(), name) + } + + // Derive the full name of the child. + // Note that enum values are a sibling to the enum parent in the namespace. + var fullName protoreflect.FullName + if _, ok := parent.(protoreflect.EnumDescriptor); ok { + fullName = sb.AppendFullName(parent.FullName().Parent(), protoreflect.Name(name)) + } else { + fullName = sb.AppendFullName(parent.FullName(), protoreflect.Name(name)) + } + if _, ok := r[fullName]; ok { + return filedesc.BaseL0{}, errors.New("descriptor %q already declared", fullName) + } + r[fullName] = child + + // TODO: Verify that the full name does not already exist in the resolver? + // This is not as critical since most usages of NewFile will register + // the created file back into the registry, which will perform this check. + + return filedesc.BaseL0{ + FullName: fullName, + ParentFile: parent.ParentFile().(*filedesc.File), + Parent: parent, + Index: idx, + }, nil +} diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go new file mode 100644 index 0000000000..ff692436e9 --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go @@ -0,0 +1,291 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protodesc + +import ( + "google.golang.org/protobuf/internal/encoding/defval" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" + + "google.golang.org/protobuf/types/descriptorpb" +) + +// resolver is a wrapper around a local registry of declarations within the file +// and the remote resolver. The remote resolver is restricted to only return +// descriptors that have been imported. +type resolver struct { + local descsByName + remote Resolver + imports importSet + + allowUnresolvable bool +} + +func (r *resolver) resolveMessageDependencies(ms []filedesc.Message, mds []*descriptorpb.DescriptorProto) (err error) { + for i, md := range mds { + m := &ms[i] + for j, fd := range md.GetField() { + f := &m.L2.Fields.List[j] + if f.L1.Cardinality == protoreflect.Required { + m.L2.RequiredNumbers.List = append(m.L2.RequiredNumbers.List, f.L1.Number) + } + if fd.OneofIndex != nil { + k := int(fd.GetOneofIndex()) + if !(0 <= k && k < len(md.GetOneofDecl())) { + return errors.New("message field %q has an invalid oneof index: %d", f.FullName(), k) + } + o := &m.L2.Oneofs.List[k] + f.L1.ContainingOneof = o + o.L1.Fields.List = append(o.L1.Fields.List, f) + } + + if f.L1.Kind, f.L1.Enum, f.L1.Message, err = r.findTarget(f.Kind(), f.Parent().FullName(), partialName(fd.GetTypeName())); err != nil { + return errors.New("message field %q cannot resolve type: %v", f.FullName(), err) + } + if f.L1.Kind == protoreflect.GroupKind && (f.IsMap() || f.IsMapEntry()) { + // A map field might inherit delimited encoding from a file-wide default feature. + // But maps never actually use delimited encoding. (At least for now...) + f.L1.Kind = protoreflect.MessageKind + } + if fd.DefaultValue != nil { + v, ev, err := unmarshalDefault(fd.GetDefaultValue(), f, r.allowUnresolvable) + if err != nil { + return errors.New("message field %q has invalid default: %v", f.FullName(), err) + } + f.L1.Default = filedesc.DefaultValue(v, ev) + } + } + + if err := r.resolveMessageDependencies(m.L1.Messages.List, md.GetNestedType()); err != nil { + return err + } + if err := r.resolveExtensionDependencies(m.L1.Extensions.List, md.GetExtension()); err != nil { + return err + } + } + return nil +} + +func (r *resolver) resolveExtensionDependencies(xs []filedesc.Extension, xds []*descriptorpb.FieldDescriptorProto) (err error) { + for i, xd := range xds { + x := &xs[i] + if x.L1.Extendee, err = r.findMessageDescriptor(x.Parent().FullName(), partialName(xd.GetExtendee())); err != nil { + return errors.New("extension field %q cannot resolve extendee: %v", x.FullName(), err) + } + if x.L1.Kind, x.L2.Enum, x.L2.Message, err = r.findTarget(x.Kind(), x.Parent().FullName(), partialName(xd.GetTypeName())); err != nil { + return errors.New("extension field %q cannot resolve type: %v", x.FullName(), err) + } + if xd.DefaultValue != nil { + v, ev, err := unmarshalDefault(xd.GetDefaultValue(), x, r.allowUnresolvable) + if err != nil { + return errors.New("extension field %q has invalid default: %v", x.FullName(), err) + } + x.L2.Default = filedesc.DefaultValue(v, ev) + } + } + return nil +} + +func (r *resolver) resolveServiceDependencies(ss []filedesc.Service, sds []*descriptorpb.ServiceDescriptorProto) (err error) { + for i, sd := range sds { + s := &ss[i] + for j, md := range sd.GetMethod() { + m := &s.L2.Methods.List[j] + m.L1.Input, err = r.findMessageDescriptor(m.Parent().FullName(), partialName(md.GetInputType())) + if err != nil { + return errors.New("service method %q cannot resolve input: %v", m.FullName(), err) + } + m.L1.Output, err = r.findMessageDescriptor(s.FullName(), partialName(md.GetOutputType())) + if err != nil { + return errors.New("service method %q cannot resolve output: %v", m.FullName(), err) + } + } + } + return nil +} + +// findTarget finds an enum or message descriptor if k is an enum, message, +// group, or unknown. If unknown, and the name could be resolved, the kind +// returned kind is set based on the type of the resolved descriptor. +func (r *resolver) findTarget(k protoreflect.Kind, scope protoreflect.FullName, ref partialName) (protoreflect.Kind, protoreflect.EnumDescriptor, protoreflect.MessageDescriptor, error) { + switch k { + case protoreflect.EnumKind: + ed, err := r.findEnumDescriptor(scope, ref) + if err != nil { + return 0, nil, nil, err + } + return k, ed, nil, nil + case protoreflect.MessageKind, protoreflect.GroupKind: + md, err := r.findMessageDescriptor(scope, ref) + if err != nil { + return 0, nil, nil, err + } + return k, nil, md, nil + case 0: + // Handle unspecified kinds (possible with parsers that operate + // on a per-file basis without knowledge of dependencies). + d, err := r.findDescriptor(scope, ref) + if err == protoregistry.NotFound && r.allowUnresolvable { + return k, filedesc.PlaceholderEnum(ref.FullName()), filedesc.PlaceholderMessage(ref.FullName()), nil + } else if err == protoregistry.NotFound { + return 0, nil, nil, errors.New("%q not found", ref.FullName()) + } else if err != nil { + return 0, nil, nil, err + } + switch d := d.(type) { + case protoreflect.EnumDescriptor: + return protoreflect.EnumKind, d, nil, nil + case protoreflect.MessageDescriptor: + return protoreflect.MessageKind, nil, d, nil + default: + return 0, nil, nil, errors.New("unknown kind") + } + default: + if ref != "" { + return 0, nil, nil, errors.New("target name cannot be specified for %v", k) + } + if !k.IsValid() { + return 0, nil, nil, errors.New("invalid kind: %d", k) + } + return k, nil, nil, nil + } +} + +// findDescriptor finds the descriptor by name, +// which may be a relative name within some scope. +// +// Suppose the scope was "fizz.buzz" and the reference was "Foo.Bar", +// then the following full names are searched: +// - fizz.buzz.Foo.Bar +// - fizz.Foo.Bar +// - Foo.Bar +func (r *resolver) findDescriptor(scope protoreflect.FullName, ref partialName) (protoreflect.Descriptor, error) { + if !ref.IsValid() { + return nil, errors.New("invalid name reference: %q", ref) + } + if ref.IsFull() { + scope, ref = "", ref[1:] + } + var foundButNotImported protoreflect.Descriptor + for { + // Derive the full name to search. + s := protoreflect.FullName(ref) + if scope != "" { + s = scope + "." + s + } + + // Check the current file for the descriptor. + if d, ok := r.local[s]; ok { + return d, nil + } + + // Check the remote registry for the descriptor. + d, err := r.remote.FindDescriptorByName(s) + if err == nil { + // Only allow descriptors covered by one of the imports. + if r.imports[d.ParentFile().Path()] { + return d, nil + } + foundButNotImported = d + } else if err != protoregistry.NotFound { + return nil, errors.Wrap(err, "%q", s) + } + + // Continue on at a higher level of scoping. + if scope == "" { + if d := foundButNotImported; d != nil { + return nil, errors.New("resolved %q, but %q is not imported", d.FullName(), d.ParentFile().Path()) + } + return nil, protoregistry.NotFound + } + scope = scope.Parent() + } +} + +func (r *resolver) findEnumDescriptor(scope protoreflect.FullName, ref partialName) (protoreflect.EnumDescriptor, error) { + d, err := r.findDescriptor(scope, ref) + if err == protoregistry.NotFound && r.allowUnresolvable { + return filedesc.PlaceholderEnum(ref.FullName()), nil + } else if err == protoregistry.NotFound { + return nil, errors.New("%q not found", ref.FullName()) + } else if err != nil { + return nil, err + } + ed, ok := d.(protoreflect.EnumDescriptor) + if !ok { + return nil, errors.New("resolved %q, but it is not an enum", d.FullName()) + } + return ed, nil +} + +func (r *resolver) findMessageDescriptor(scope protoreflect.FullName, ref partialName) (protoreflect.MessageDescriptor, error) { + d, err := r.findDescriptor(scope, ref) + if err == protoregistry.NotFound && r.allowUnresolvable { + return filedesc.PlaceholderMessage(ref.FullName()), nil + } else if err == protoregistry.NotFound { + return nil, errors.New("%q not found", ref.FullName()) + } else if err != nil { + return nil, err + } + md, ok := d.(protoreflect.MessageDescriptor) + if !ok { + return nil, errors.New("resolved %q, but it is not an message", d.FullName()) + } + return md, nil +} + +// partialName is the partial name. A leading dot means that the name is full, +// otherwise the name is relative to some current scope. +// See google.protobuf.FieldDescriptorProto.type_name. +type partialName string + +func (s partialName) IsFull() bool { + return len(s) > 0 && s[0] == '.' +} + +func (s partialName) IsValid() bool { + if s.IsFull() { + return protoreflect.FullName(s[1:]).IsValid() + } + return protoreflect.FullName(s).IsValid() +} + +const unknownPrefix = "*." + +// FullName converts the partial name to a full name on a best-effort basis. +// If relative, it creates an invalid full name, using a "*." prefix +// to indicate that the start of the full name is unknown. +func (s partialName) FullName() protoreflect.FullName { + if s.IsFull() { + return protoreflect.FullName(s[1:]) + } + return protoreflect.FullName(unknownPrefix + s) +} + +func unmarshalDefault(s string, fd protoreflect.FieldDescriptor, allowUnresolvable bool) (protoreflect.Value, protoreflect.EnumValueDescriptor, error) { + var evs protoreflect.EnumValueDescriptors + if fd.Enum() != nil { + evs = fd.Enum().Values() + } + v, ev, err := defval.Unmarshal(s, fd.Kind(), evs, defval.Descriptor) + if err != nil && allowUnresolvable && evs != nil && protoreflect.Name(s).IsValid() { + v = protoreflect.ValueOfEnum(0) + if evs.Len() > 0 { + v = protoreflect.ValueOfEnum(evs.Get(0).Number()) + } + ev = filedesc.PlaceholderEnumValue(fd.Enum().FullName().Parent().Append(protoreflect.Name(s))) + } else if err != nil { + return v, ev, err + } + if !fd.HasPresence() { + return v, ev, errors.New("cannot be specified with implicit field presence") + } + if fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind || fd.Cardinality() == protoreflect.Repeated { + return v, ev, errors.New("cannot be specified on composite types") + } + return v, ev, nil +} diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_validate.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_validate.go new file mode 100644 index 0000000000..c343d9227b --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_validate.go @@ -0,0 +1,359 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protodesc + +import ( + "strings" + "unicode" + + "google.golang.org/protobuf/encoding/protowire" + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/flags" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/reflect/protoreflect" + + "google.golang.org/protobuf/types/descriptorpb" +) + +func validateEnumDeclarations(es []filedesc.Enum, eds []*descriptorpb.EnumDescriptorProto) error { + for i, ed := range eds { + e := &es[i] + if err := e.L2.ReservedNames.CheckValid(); err != nil { + return errors.New("enum %q reserved names has %v", e.FullName(), err) + } + if err := e.L2.ReservedRanges.CheckValid(); err != nil { + return errors.New("enum %q reserved ranges has %v", e.FullName(), err) + } + if len(ed.GetValue()) == 0 { + return errors.New("enum %q must contain at least one value declaration", e.FullName()) + } + allowAlias := ed.GetOptions().GetAllowAlias() + foundAlias := false + for i := 0; i < e.Values().Len(); i++ { + v1 := e.Values().Get(i) + if v2 := e.Values().ByNumber(v1.Number()); v1 != v2 { + foundAlias = true + if !allowAlias { + return errors.New("enum %q has conflicting non-aliased values on number %d: %q with %q", e.FullName(), v1.Number(), v1.Name(), v2.Name()) + } + } + } + if allowAlias && !foundAlias { + return errors.New("enum %q allows aliases, but none were found", e.FullName()) + } + if !e.IsClosed() { + if v := e.Values().Get(0); v.Number() != 0 { + return errors.New("enum %q using open semantics must have zero number for the first value", v.FullName()) + } + // Verify that value names in open enums do not conflict if the + // case-insensitive prefix is removed. + // See protoc v3.8.0: src/google/protobuf/descriptor.cc:4991-5055 + names := map[string]protoreflect.EnumValueDescriptor{} + prefix := strings.Replace(strings.ToLower(string(e.Name())), "_", "", -1) + for i := 0; i < e.Values().Len(); i++ { + v1 := e.Values().Get(i) + s := strs.EnumValueName(strs.TrimEnumPrefix(string(v1.Name()), prefix)) + if v2, ok := names[s]; ok && v1.Number() != v2.Number() { + return errors.New("enum %q using open semantics has conflict: %q with %q", e.FullName(), v1.Name(), v2.Name()) + } + names[s] = v1 + } + } + + for j, vd := range ed.GetValue() { + v := &e.L2.Values.List[j] + if vd.Number == nil { + return errors.New("enum value %q must have a specified number", v.FullName()) + } + if e.L2.ReservedNames.Has(v.Name()) { + return errors.New("enum value %q must not use reserved name", v.FullName()) + } + if e.L2.ReservedRanges.Has(v.Number()) { + return errors.New("enum value %q must not use reserved number %d", v.FullName(), v.Number()) + } + } + } + return nil +} + +func validateMessageDeclarations(file *filedesc.File, ms []filedesc.Message, mds []*descriptorpb.DescriptorProto) error { + // There are a few limited exceptions only for proto3 + isProto3 := file.L1.Edition == fromEditionProto(descriptorpb.Edition_EDITION_PROTO3) + for i, md := range mds { + m := &ms[i] + + // Handle the message descriptor itself. + isMessageSet := md.GetOptions().GetMessageSetWireFormat() + if err := m.L2.ReservedNames.CheckValid(); err != nil { + return errors.New("message %q reserved names has %v", m.FullName(), err) + } + if err := m.L2.ReservedRanges.CheckValid(isMessageSet); err != nil { + return errors.New("message %q reserved ranges has %v", m.FullName(), err) + } + if err := m.L2.ExtensionRanges.CheckValid(isMessageSet); err != nil { + return errors.New("message %q extension ranges has %v", m.FullName(), err) + } + if err := (*filedesc.FieldRanges).CheckOverlap(&m.L2.ReservedRanges, &m.L2.ExtensionRanges); err != nil { + return errors.New("message %q reserved and extension ranges has %v", m.FullName(), err) + } + for i := 0; i < m.Fields().Len(); i++ { + f1 := m.Fields().Get(i) + if f2 := m.Fields().ByNumber(f1.Number()); f1 != f2 { + return errors.New("message %q has conflicting fields: %q with %q", m.FullName(), f1.Name(), f2.Name()) + } + } + if isMessageSet && !flags.ProtoLegacy { + return errors.New("message %q is a MessageSet, which is a legacy proto1 feature that is no longer supported", m.FullName()) + } + if isMessageSet && (isProto3 || m.Fields().Len() > 0 || m.ExtensionRanges().Len() == 0) { + return errors.New("message %q is an invalid proto1 MessageSet", m.FullName()) + } + if isProto3 { + if m.ExtensionRanges().Len() > 0 { + return errors.New("message %q using proto3 semantics cannot have extension ranges", m.FullName()) + } + } + + for j, fd := range md.GetField() { + f := &m.L2.Fields.List[j] + if m.L2.ReservedNames.Has(f.Name()) { + return errors.New("message field %q must not use reserved name", f.FullName()) + } + if !f.Number().IsValid() { + return errors.New("message field %q has an invalid number: %d", f.FullName(), f.Number()) + } + if !f.Cardinality().IsValid() { + return errors.New("message field %q has an invalid cardinality: %d", f.FullName(), f.Cardinality()) + } + if m.L2.ReservedRanges.Has(f.Number()) { + return errors.New("message field %q must not use reserved number %d", f.FullName(), f.Number()) + } + if m.L2.ExtensionRanges.Has(f.Number()) { + return errors.New("message field %q with number %d in extension range", f.FullName(), f.Number()) + } + if fd.Extendee != nil { + return errors.New("message field %q may not have extendee: %q", f.FullName(), fd.GetExtendee()) + } + if f.L1.IsProto3Optional { + if !isProto3 { + return errors.New("message field %q under proto3 optional semantics must be specified in the proto3 syntax", f.FullName()) + } + if f.Cardinality() != protoreflect.Optional { + return errors.New("message field %q under proto3 optional semantics must have optional cardinality", f.FullName()) + } + if f.ContainingOneof() != nil && f.ContainingOneof().Fields().Len() != 1 { + return errors.New("message field %q under proto3 optional semantics must be within a single element oneof", f.FullName()) + } + } + if f.IsPacked() && !isPackable(f) { + return errors.New("message field %q is not packable", f.FullName()) + } + if err := checkValidGroup(file, f); err != nil { + return errors.New("message field %q is an invalid group: %v", f.FullName(), err) + } + if err := checkValidMap(f); err != nil { + return errors.New("message field %q is an invalid map: %v", f.FullName(), err) + } + if isProto3 { + if f.Cardinality() == protoreflect.Required { + return errors.New("message field %q using proto3 semantics cannot be required", f.FullName()) + } + if f.Enum() != nil && !f.Enum().IsPlaceholder() && f.Enum().IsClosed() { + return errors.New("message field %q using proto3 semantics may only depend on open enums", f.FullName()) + } + } + if f.Cardinality() == protoreflect.Optional && !f.HasPresence() && f.Enum() != nil && !f.Enum().IsPlaceholder() && f.Enum().IsClosed() { + return errors.New("message field %q with implicit presence may only use open enums", f.FullName()) + } + } + seenSynthetic := false // synthetic oneofs for proto3 optional must come after real oneofs + for j := range md.GetOneofDecl() { + o := &m.L2.Oneofs.List[j] + if o.Fields().Len() == 0 { + return errors.New("message oneof %q must contain at least one field declaration", o.FullName()) + } + if n := o.Fields().Len(); n-1 != (o.Fields().Get(n-1).Index() - o.Fields().Get(0).Index()) { + return errors.New("message oneof %q must have consecutively declared fields", o.FullName()) + } + + if o.IsSynthetic() { + seenSynthetic = true + continue + } + if !o.IsSynthetic() && seenSynthetic { + return errors.New("message oneof %q must be declared before synthetic oneofs", o.FullName()) + } + + for i := 0; i < o.Fields().Len(); i++ { + f := o.Fields().Get(i) + if f.Cardinality() != protoreflect.Optional { + return errors.New("message field %q belongs in a oneof and must be optional", f.FullName()) + } + } + } + + if err := validateEnumDeclarations(m.L1.Enums.List, md.GetEnumType()); err != nil { + return err + } + if err := validateMessageDeclarations(file, m.L1.Messages.List, md.GetNestedType()); err != nil { + return err + } + if err := validateExtensionDeclarations(file, m.L1.Extensions.List, md.GetExtension()); err != nil { + return err + } + } + return nil +} + +func validateExtensionDeclarations(f *filedesc.File, xs []filedesc.Extension, xds []*descriptorpb.FieldDescriptorProto) error { + for i, xd := range xds { + x := &xs[i] + // NOTE: Avoid using the IsValid method since extensions to MessageSet + // may have a field number higher than normal. This check only verifies + // that the number is not negative or reserved. We check again later + // if we know that the extendee is definitely not a MessageSet. + if n := x.Number(); n < 0 || (protowire.FirstReservedNumber <= n && n <= protowire.LastReservedNumber) { + return errors.New("extension field %q has an invalid number: %d", x.FullName(), x.Number()) + } + if !x.Cardinality().IsValid() || x.Cardinality() == protoreflect.Required { + return errors.New("extension field %q has an invalid cardinality: %d", x.FullName(), x.Cardinality()) + } + if xd.JsonName != nil { + // A bug in older versions of protoc would always populate the + // "json_name" option for extensions when it is meaningless. + // When it did so, it would always use the camel-cased field name. + if xd.GetJsonName() != strs.JSONCamelCase(string(x.Name())) { + return errors.New("extension field %q may not have an explicitly set JSON name: %q", x.FullName(), xd.GetJsonName()) + } + } + if xd.OneofIndex != nil { + return errors.New("extension field %q may not be part of a oneof", x.FullName()) + } + if md := x.ContainingMessage(); !md.IsPlaceholder() { + if !md.ExtensionRanges().Has(x.Number()) { + return errors.New("extension field %q extends %q with non-extension field number: %d", x.FullName(), md.FullName(), x.Number()) + } + isMessageSet := md.Options().(*descriptorpb.MessageOptions).GetMessageSetWireFormat() + if isMessageSet && !isOptionalMessage(x) { + return errors.New("extension field %q extends MessageSet and must be an optional message", x.FullName()) + } + if !isMessageSet && !x.Number().IsValid() { + return errors.New("extension field %q has an invalid number: %d", x.FullName(), x.Number()) + } + } + if x.IsPacked() && !isPackable(x) { + return errors.New("extension field %q is not packable", x.FullName()) + } + if err := checkValidGroup(f, x); err != nil { + return errors.New("extension field %q is an invalid group: %v", x.FullName(), err) + } + if md := x.Message(); md != nil && md.IsMapEntry() { + return errors.New("extension field %q cannot be a map entry", x.FullName()) + } + if f.L1.Edition == fromEditionProto(descriptorpb.Edition_EDITION_PROTO3) { + switch x.ContainingMessage().FullName() { + case (*descriptorpb.FileOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.EnumOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.EnumValueOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.MessageOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.FieldOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.OneofOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.ExtensionRangeOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.ServiceOptions)(nil).ProtoReflect().Descriptor().FullName(): + case (*descriptorpb.MethodOptions)(nil).ProtoReflect().Descriptor().FullName(): + default: + return errors.New("extension field %q cannot be declared in proto3 unless extended descriptor options", x.FullName()) + } + } + } + return nil +} + +// isOptionalMessage reports whether this is an optional message. +// If the kind is unknown, it is assumed to be a message. +func isOptionalMessage(fd protoreflect.FieldDescriptor) bool { + return (fd.Kind() == 0 || fd.Kind() == protoreflect.MessageKind) && fd.Cardinality() == protoreflect.Optional +} + +// isPackable checks whether the pack option can be specified. +func isPackable(fd protoreflect.FieldDescriptor) bool { + switch fd.Kind() { + case protoreflect.StringKind, protoreflect.BytesKind, protoreflect.MessageKind, protoreflect.GroupKind: + return false + } + return fd.IsList() +} + +// checkValidGroup reports whether fd is a valid group according to the same +// rules that protoc imposes. +func checkValidGroup(f *filedesc.File, fd protoreflect.FieldDescriptor) error { + md := fd.Message() + switch { + case fd.Kind() != protoreflect.GroupKind: + return nil + case f.L1.Edition == fromEditionProto(descriptorpb.Edition_EDITION_PROTO3): + return errors.New("invalid under proto3 semantics") + case md == nil || md.IsPlaceholder(): + return errors.New("message must be resolvable") + } + if f.L1.Edition < fromEditionProto(descriptorpb.Edition_EDITION_2023) { + switch { + case fd.FullName().Parent() != md.FullName().Parent(): + return errors.New("message and field must be declared in the same scope") + case !unicode.IsUpper(rune(md.Name()[0])): + return errors.New("message name must start with an uppercase") + case fd.Name() != protoreflect.Name(strings.ToLower(string(md.Name()))): + return errors.New("field name must be lowercased form of the message name") + } + } + return nil +} + +// checkValidMap checks whether the field is a valid map according to the same +// rules that protoc imposes. +// See protoc v3.8.0: src/google/protobuf/descriptor.cc:6045-6115 +func checkValidMap(fd protoreflect.FieldDescriptor) error { + md := fd.Message() + switch { + case md == nil || !md.IsMapEntry(): + return nil + case fd.FullName().Parent() != md.FullName().Parent(): + return errors.New("message and field must be declared in the same scope") + case md.Name() != protoreflect.Name(strs.MapEntryName(string(fd.Name()))): + return errors.New("incorrect implicit map entry name") + case fd.Cardinality() != protoreflect.Repeated: + return errors.New("field must be repeated") + case md.Fields().Len() != 2: + return errors.New("message must have exactly two fields") + case md.ExtensionRanges().Len() > 0: + return errors.New("message must not have any extension ranges") + case md.Enums().Len()+md.Messages().Len()+md.Extensions().Len() > 0: + return errors.New("message must not have any nested declarations") + } + kf := md.Fields().Get(0) + vf := md.Fields().Get(1) + switch { + case kf.Name() != genid.MapEntry_Key_field_name || kf.Number() != genid.MapEntry_Key_field_number || kf.Cardinality() != protoreflect.Optional || kf.ContainingOneof() != nil || kf.HasDefault(): + return errors.New("invalid key field") + case vf.Name() != genid.MapEntry_Value_field_name || vf.Number() != genid.MapEntry_Value_field_number || vf.Cardinality() != protoreflect.Optional || vf.ContainingOneof() != nil || vf.HasDefault(): + return errors.New("invalid value field") + } + switch kf.Kind() { + case protoreflect.BoolKind: // bool + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: // int32 + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: // int64 + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: // uint32 + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: // uint64 + case protoreflect.StringKind: // string + default: + return errors.New("invalid key kind: %v", kf.Kind()) + } + if e := vf.Enum(); e != nil && e.Values().Len() > 0 && e.Values().Get(0).Number() != 0 { + return errors.New("map enum value must have zero number for the first value") + } + return nil +} diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/editions.go b/vendor/google.golang.org/protobuf/reflect/protodesc/editions.go new file mode 100644 index 0000000000..697a61b290 --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/editions.go @@ -0,0 +1,181 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protodesc + +import ( + "fmt" + "os" + "sync" + + "google.golang.org/protobuf/internal/editiondefaults" + "google.golang.org/protobuf/internal/filedesc" + "google.golang.org/protobuf/internal/genid" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/types/descriptorpb" + "google.golang.org/protobuf/types/gofeaturespb" +) + +var defaults = &descriptorpb.FeatureSetDefaults{} +var defaultsCacheMu sync.Mutex +var defaultsCache = make(map[filedesc.Edition]*descriptorpb.FeatureSet) + +func init() { + err := proto.Unmarshal(editiondefaults.Defaults, defaults) + if err != nil { + fmt.Fprintf(os.Stderr, "unmarshal editions defaults: %v\n", err) + os.Exit(1) + } +} + +func fromEditionProto(epb descriptorpb.Edition) filedesc.Edition { + return filedesc.Edition(epb) +} + +func toEditionProto(ed filedesc.Edition) descriptorpb.Edition { + switch ed { + case filedesc.EditionUnknown: + return descriptorpb.Edition_EDITION_UNKNOWN + case filedesc.EditionProto2: + return descriptorpb.Edition_EDITION_PROTO2 + case filedesc.EditionProto3: + return descriptorpb.Edition_EDITION_PROTO3 + case filedesc.Edition2023: + return descriptorpb.Edition_EDITION_2023 + case filedesc.Edition2024: + return descriptorpb.Edition_EDITION_2024 + default: + panic(fmt.Sprintf("unknown value for edition: %v", ed)) + } +} + +func getFeatureSetFor(ed filedesc.Edition) *descriptorpb.FeatureSet { + defaultsCacheMu.Lock() + defer defaultsCacheMu.Unlock() + if def, ok := defaultsCache[ed]; ok { + return def + } + edpb := toEditionProto(ed) + if defaults.GetMinimumEdition() > edpb || defaults.GetMaximumEdition() < edpb { + // This should never happen protodesc.(FileOptions).New would fail when + // initializing the file descriptor. + // This most likely means the embedded defaults were not updated. + fmt.Fprintf(os.Stderr, "internal error: unsupported edition %v (did you forget to update the embedded defaults (i.e. the bootstrap descriptor proto)?)\n", edpb) + os.Exit(1) + } + fsed := defaults.GetDefaults()[0] + // Using a linear search for now. + // Editions are guaranteed to be sorted and thus we could use a binary search. + // Given that there are only a handful of editions (with one more per year) + // there is not much reason to use a binary search. + for _, def := range defaults.GetDefaults() { + if def.GetEdition() <= edpb { + fsed = def + } else { + break + } + } + fs := proto.Clone(fsed.GetFixedFeatures()).(*descriptorpb.FeatureSet) + proto.Merge(fs, fsed.GetOverridableFeatures()) + defaultsCache[ed] = fs + return fs +} + +// mergeEditionFeatures merges the parent and child feature sets. This function +// should be used when initializing Go descriptors from descriptor protos which +// is why the parent is a filedesc.EditionsFeatures (Go representation) while +// the child is a descriptorproto.FeatureSet (protoc representation). +// Any feature set by the child overwrites what is set by the parent. +func mergeEditionFeatures(parentDesc protoreflect.Descriptor, child *descriptorpb.FeatureSet) filedesc.EditionFeatures { + var parentFS filedesc.EditionFeatures + switch p := parentDesc.(type) { + case *filedesc.File: + parentFS = p.L1.EditionFeatures + case *filedesc.Message: + parentFS = p.L1.EditionFeatures + default: + panic(fmt.Sprintf("unknown parent type %T", parentDesc)) + } + if child == nil { + return parentFS + } + if fp := child.FieldPresence; fp != nil { + parentFS.IsFieldPresence = *fp == descriptorpb.FeatureSet_LEGACY_REQUIRED || + *fp == descriptorpb.FeatureSet_EXPLICIT + parentFS.IsLegacyRequired = *fp == descriptorpb.FeatureSet_LEGACY_REQUIRED + } + if et := child.EnumType; et != nil { + parentFS.IsOpenEnum = *et == descriptorpb.FeatureSet_OPEN + } + + if rfe := child.RepeatedFieldEncoding; rfe != nil { + parentFS.IsPacked = *rfe == descriptorpb.FeatureSet_PACKED + } + + if utf8val := child.Utf8Validation; utf8val != nil { + parentFS.IsUTF8Validated = *utf8val == descriptorpb.FeatureSet_VERIFY + } + + if me := child.MessageEncoding; me != nil { + parentFS.IsDelimitedEncoded = *me == descriptorpb.FeatureSet_DELIMITED + } + + if jf := child.JsonFormat; jf != nil { + parentFS.IsJSONCompliant = *jf == descriptorpb.FeatureSet_ALLOW + } + + // We must not use proto.GetExtension(child, gofeaturespb.E_Go) + // because that only works for messages we generated, but not for + // dynamicpb messages. See golang/protobuf#1669. + // + // Further, we harden this code against adversarial inputs: a + // service which accepts descriptors from a possibly malicious + // source shouldn't crash. + goFeatures := child.ProtoReflect().Get(gofeaturespb.E_Go.TypeDescriptor()) + if !goFeatures.IsValid() { + return parentFS + } + gf, ok := goFeatures.Interface().(protoreflect.Message) + if !ok { + return parentFS + } + // gf.Interface() could be *dynamicpb.Message or *gofeaturespb.GoFeatures. + fields := gf.Descriptor().Fields() + + if fd := fields.ByNumber(genid.GoFeatures_LegacyUnmarshalJsonEnum_field_number); fd != nil && + !fd.IsList() && + fd.Kind() == protoreflect.BoolKind && + gf.Has(fd) { + parentFS.GenerateLegacyUnmarshalJSON = gf.Get(fd).Bool() + } + + if fd := fields.ByNumber(genid.GoFeatures_StripEnumPrefix_field_number); fd != nil && + !fd.IsList() && + fd.Kind() == protoreflect.EnumKind && + gf.Has(fd) { + parentFS.StripEnumPrefix = int(gf.Get(fd).Enum()) + } + + if fd := fields.ByNumber(genid.GoFeatures_ApiLevel_field_number); fd != nil && + !fd.IsList() && + fd.Kind() == protoreflect.EnumKind && + gf.Has(fd) { + parentFS.APILevel = int(gf.Get(fd).Enum()) + } + + return parentFS +} + +// initFileDescFromFeatureSet initializes editions related fields in fd based +// on fs. If fs is nil it is assumed to be an empty featureset and all fields +// will be initialized with the appropriate default. fd.L1.Edition must be set +// before calling this function. +func initFileDescFromFeatureSet(fd *filedesc.File, fs *descriptorpb.FeatureSet) { + dfs := getFeatureSetFor(fd.L1.Edition) + // initialize the featureset with the defaults + fd.L1.EditionFeatures = mergeEditionFeatures(fd, dfs) + // overwrite any options explicitly specified + fd.L1.EditionFeatures = mergeEditionFeatures(fd, fs) +} diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/proto.go b/vendor/google.golang.org/protobuf/reflect/protodesc/proto.go new file mode 100644 index 0000000000..9b880aa8c9 --- /dev/null +++ b/vendor/google.golang.org/protobuf/reflect/protodesc/proto.go @@ -0,0 +1,271 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package protodesc + +import ( + "fmt" + "strings" + + "google.golang.org/protobuf/internal/encoding/defval" + "google.golang.org/protobuf/internal/strs" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/reflect/protoreflect" + + "google.golang.org/protobuf/types/descriptorpb" +) + +// ToFileDescriptorProto copies a [protoreflect.FileDescriptor] into a +// google.protobuf.FileDescriptorProto message. +func ToFileDescriptorProto(file protoreflect.FileDescriptor) *descriptorpb.FileDescriptorProto { + p := &descriptorpb.FileDescriptorProto{ + Name: proto.String(file.Path()), + Options: proto.Clone(file.Options()).(*descriptorpb.FileOptions), + } + if file.Package() != "" { + p.Package = proto.String(string(file.Package())) + } + for i, imports := 0, file.Imports(); i < imports.Len(); i++ { + imp := imports.Get(i) + p.Dependency = append(p.Dependency, imp.Path()) + if imp.IsPublic { + p.PublicDependency = append(p.PublicDependency, int32(i)) + } + } + for i, locs := 0, file.SourceLocations(); i < locs.Len(); i++ { + loc := locs.Get(i) + l := &descriptorpb.SourceCodeInfo_Location{} + l.Path = append(l.Path, loc.Path...) + if loc.StartLine == loc.EndLine { + l.Span = []int32{int32(loc.StartLine), int32(loc.StartColumn), int32(loc.EndColumn)} + } else { + l.Span = []int32{int32(loc.StartLine), int32(loc.StartColumn), int32(loc.EndLine), int32(loc.EndColumn)} + } + l.LeadingDetachedComments = append([]string(nil), loc.LeadingDetachedComments...) + if loc.LeadingComments != "" { + l.LeadingComments = proto.String(loc.LeadingComments) + } + if loc.TrailingComments != "" { + l.TrailingComments = proto.String(loc.TrailingComments) + } + if p.SourceCodeInfo == nil { + p.SourceCodeInfo = &descriptorpb.SourceCodeInfo{} + } + p.SourceCodeInfo.Location = append(p.SourceCodeInfo.Location, l) + + } + for i, messages := 0, file.Messages(); i < messages.Len(); i++ { + p.MessageType = append(p.MessageType, ToDescriptorProto(messages.Get(i))) + } + for i, enums := 0, file.Enums(); i < enums.Len(); i++ { + p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i))) + } + for i, services := 0, file.Services(); i < services.Len(); i++ { + p.Service = append(p.Service, ToServiceDescriptorProto(services.Get(i))) + } + for i, exts := 0, file.Extensions(); i < exts.Len(); i++ { + p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i))) + } + if syntax := file.Syntax(); syntax != protoreflect.Proto2 && syntax.IsValid() { + p.Syntax = proto.String(file.Syntax().String()) + } + if file.Syntax() == protoreflect.Editions { + desc := file + if fileImportDesc, ok := file.(protoreflect.FileImport); ok { + desc = fileImportDesc.FileDescriptor + } + + if editionsInterface, ok := desc.(interface{ Edition() int32 }); ok { + p.Edition = descriptorpb.Edition(editionsInterface.Edition()).Enum() + } + } + return p +} + +// ToDescriptorProto copies a [protoreflect.MessageDescriptor] into a +// google.protobuf.DescriptorProto message. +func ToDescriptorProto(message protoreflect.MessageDescriptor) *descriptorpb.DescriptorProto { + p := &descriptorpb.DescriptorProto{ + Name: proto.String(string(message.Name())), + Options: proto.Clone(message.Options()).(*descriptorpb.MessageOptions), + } + for i, fields := 0, message.Fields(); i < fields.Len(); i++ { + p.Field = append(p.Field, ToFieldDescriptorProto(fields.Get(i))) + } + for i, exts := 0, message.Extensions(); i < exts.Len(); i++ { + p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i))) + } + for i, messages := 0, message.Messages(); i < messages.Len(); i++ { + p.NestedType = append(p.NestedType, ToDescriptorProto(messages.Get(i))) + } + for i, enums := 0, message.Enums(); i < enums.Len(); i++ { + p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i))) + } + for i, xranges := 0, message.ExtensionRanges(); i < xranges.Len(); i++ { + xrange := xranges.Get(i) + p.ExtensionRange = append(p.ExtensionRange, &descriptorpb.DescriptorProto_ExtensionRange{ + Start: proto.Int32(int32(xrange[0])), + End: proto.Int32(int32(xrange[1])), + Options: proto.Clone(message.ExtensionRangeOptions(i)).(*descriptorpb.ExtensionRangeOptions), + }) + } + for i, oneofs := 0, message.Oneofs(); i < oneofs.Len(); i++ { + p.OneofDecl = append(p.OneofDecl, ToOneofDescriptorProto(oneofs.Get(i))) + } + for i, ranges := 0, message.ReservedRanges(); i < ranges.Len(); i++ { + rrange := ranges.Get(i) + p.ReservedRange = append(p.ReservedRange, &descriptorpb.DescriptorProto_ReservedRange{ + Start: proto.Int32(int32(rrange[0])), + End: proto.Int32(int32(rrange[1])), + }) + } + for i, names := 0, message.ReservedNames(); i < names.Len(); i++ { + p.ReservedName = append(p.ReservedName, string(names.Get(i))) + } + return p +} + +// ToFieldDescriptorProto copies a [protoreflect.FieldDescriptor] into a +// google.protobuf.FieldDescriptorProto message. +func ToFieldDescriptorProto(field protoreflect.FieldDescriptor) *descriptorpb.FieldDescriptorProto { + p := &descriptorpb.FieldDescriptorProto{ + Name: proto.String(string(field.Name())), + Number: proto.Int32(int32(field.Number())), + Label: descriptorpb.FieldDescriptorProto_Label(field.Cardinality()).Enum(), + Options: proto.Clone(field.Options()).(*descriptorpb.FieldOptions), + } + if field.IsExtension() { + p.Extendee = fullNameOf(field.ContainingMessage()) + } + if field.Kind().IsValid() { + p.Type = descriptorpb.FieldDescriptorProto_Type(field.Kind()).Enum() + } + if field.Enum() != nil { + p.TypeName = fullNameOf(field.Enum()) + } + if field.Message() != nil { + p.TypeName = fullNameOf(field.Message()) + } + if field.HasJSONName() { + // A bug in older versions of protoc would always populate the + // "json_name" option for extensions when it is meaningless. + // When it did so, it would always use the camel-cased field name. + if field.IsExtension() { + p.JsonName = proto.String(strs.JSONCamelCase(string(field.Name()))) + } else { + p.JsonName = proto.String(field.JSONName()) + } + } + if field.Syntax() == protoreflect.Proto3 && field.HasOptionalKeyword() { + p.Proto3Optional = proto.Bool(true) + } + if field.Syntax() == protoreflect.Editions { + // Editions have no group keyword, this type is only set so that downstream users continue + // treating this as delimited encoding. + if p.GetType() == descriptorpb.FieldDescriptorProto_TYPE_GROUP { + p.Type = descriptorpb.FieldDescriptorProto_TYPE_MESSAGE.Enum() + } + // Editions have no required keyword, this label is only set so that downstream users continue + // treating it as required. + if p.GetLabel() == descriptorpb.FieldDescriptorProto_LABEL_REQUIRED { + p.Label = descriptorpb.FieldDescriptorProto_LABEL_OPTIONAL.Enum() + } + } + if field.HasDefault() { + def, err := defval.Marshal(field.Default(), field.DefaultEnumValue(), field.Kind(), defval.Descriptor) + if err != nil && field.DefaultEnumValue() != nil { + def = string(field.DefaultEnumValue().Name()) // occurs for unresolved enum values + } else if err != nil { + panic(fmt.Sprintf("%v: %v", field.FullName(), err)) + } + p.DefaultValue = proto.String(def) + } + if oneof := field.ContainingOneof(); oneof != nil { + p.OneofIndex = proto.Int32(int32(oneof.Index())) + } + return p +} + +// ToOneofDescriptorProto copies a [protoreflect.OneofDescriptor] into a +// google.protobuf.OneofDescriptorProto message. +func ToOneofDescriptorProto(oneof protoreflect.OneofDescriptor) *descriptorpb.OneofDescriptorProto { + return &descriptorpb.OneofDescriptorProto{ + Name: proto.String(string(oneof.Name())), + Options: proto.Clone(oneof.Options()).(*descriptorpb.OneofOptions), + } +} + +// ToEnumDescriptorProto copies a [protoreflect.EnumDescriptor] into a +// google.protobuf.EnumDescriptorProto message. +func ToEnumDescriptorProto(enum protoreflect.EnumDescriptor) *descriptorpb.EnumDescriptorProto { + p := &descriptorpb.EnumDescriptorProto{ + Name: proto.String(string(enum.Name())), + Options: proto.Clone(enum.Options()).(*descriptorpb.EnumOptions), + } + for i, values := 0, enum.Values(); i < values.Len(); i++ { + p.Value = append(p.Value, ToEnumValueDescriptorProto(values.Get(i))) + } + for i, ranges := 0, enum.ReservedRanges(); i < ranges.Len(); i++ { + rrange := ranges.Get(i) + p.ReservedRange = append(p.ReservedRange, &descriptorpb.EnumDescriptorProto_EnumReservedRange{ + Start: proto.Int32(int32(rrange[0])), + End: proto.Int32(int32(rrange[1])), + }) + } + for i, names := 0, enum.ReservedNames(); i < names.Len(); i++ { + p.ReservedName = append(p.ReservedName, string(names.Get(i))) + } + return p +} + +// ToEnumValueDescriptorProto copies a [protoreflect.EnumValueDescriptor] into a +// google.protobuf.EnumValueDescriptorProto message. +func ToEnumValueDescriptorProto(value protoreflect.EnumValueDescriptor) *descriptorpb.EnumValueDescriptorProto { + return &descriptorpb.EnumValueDescriptorProto{ + Name: proto.String(string(value.Name())), + Number: proto.Int32(int32(value.Number())), + Options: proto.Clone(value.Options()).(*descriptorpb.EnumValueOptions), + } +} + +// ToServiceDescriptorProto copies a [protoreflect.ServiceDescriptor] into a +// google.protobuf.ServiceDescriptorProto message. +func ToServiceDescriptorProto(service protoreflect.ServiceDescriptor) *descriptorpb.ServiceDescriptorProto { + p := &descriptorpb.ServiceDescriptorProto{ + Name: proto.String(string(service.Name())), + Options: proto.Clone(service.Options()).(*descriptorpb.ServiceOptions), + } + for i, methods := 0, service.Methods(); i < methods.Len(); i++ { + p.Method = append(p.Method, ToMethodDescriptorProto(methods.Get(i))) + } + return p +} + +// ToMethodDescriptorProto copies a [protoreflect.MethodDescriptor] into a +// google.protobuf.MethodDescriptorProto message. +func ToMethodDescriptorProto(method protoreflect.MethodDescriptor) *descriptorpb.MethodDescriptorProto { + p := &descriptorpb.MethodDescriptorProto{ + Name: proto.String(string(method.Name())), + InputType: fullNameOf(method.Input()), + OutputType: fullNameOf(method.Output()), + Options: proto.Clone(method.Options()).(*descriptorpb.MethodOptions), + } + if method.IsStreamingClient() { + p.ClientStreaming = proto.Bool(true) + } + if method.IsStreamingServer() { + p.ServerStreaming = proto.Bool(true) + } + return p +} + +func fullNameOf(d protoreflect.Descriptor) *string { + if d == nil { + return nil + } + if strings.HasPrefix(string(d.FullName()), unknownPrefix) { + return proto.String(string(d.FullName()[len(unknownPrefix):])) + } + return proto.String("." + string(d.FullName())) +} diff --git a/vendor/google.golang.org/protobuf/types/dynamicpb/dynamic.go b/vendor/google.golang.org/protobuf/types/dynamicpb/dynamic.go new file mode 100644 index 0000000000..1ba1dfa5ad --- /dev/null +++ b/vendor/google.golang.org/protobuf/types/dynamicpb/dynamic.go @@ -0,0 +1,718 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package dynamicpb creates protocol buffer messages using runtime type information. +package dynamicpb + +import ( + "math" + + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/runtime/protoiface" + "google.golang.org/protobuf/runtime/protoimpl" +) + +// enum is a dynamic protoreflect.Enum. +type enum struct { + num protoreflect.EnumNumber + typ protoreflect.EnumType +} + +func (e enum) Descriptor() protoreflect.EnumDescriptor { return e.typ.Descriptor() } +func (e enum) Type() protoreflect.EnumType { return e.typ } +func (e enum) Number() protoreflect.EnumNumber { return e.num } + +// enumType is a dynamic protoreflect.EnumType. +type enumType struct { + desc protoreflect.EnumDescriptor +} + +// NewEnumType creates a new EnumType with the provided descriptor. +// +// EnumTypes created by this package are equal if their descriptors are equal. +// That is, if ed1 == ed2, then NewEnumType(ed1) == NewEnumType(ed2). +// +// Enum values created by the EnumType are equal if their numbers are equal. +func NewEnumType(desc protoreflect.EnumDescriptor) protoreflect.EnumType { + return enumType{desc} +} + +func (et enumType) New(n protoreflect.EnumNumber) protoreflect.Enum { return enum{n, et} } +func (et enumType) Descriptor() protoreflect.EnumDescriptor { return et.desc } + +// extensionType is a dynamic protoreflect.ExtensionType. +type extensionType struct { + desc extensionTypeDescriptor +} + +// A Message is a dynamically constructed protocol buffer message. +// +// Message implements the [google.golang.org/protobuf/proto.Message] interface, +// and may be used with all standard proto package functions +// such as Marshal, Unmarshal, and so forth. +// +// Message also implements the [protoreflect.Message] interface. +// See the [protoreflect] package documentation for that interface for how to +// get and set fields and otherwise interact with the contents of a Message. +// +// Reflection API functions which construct messages, such as NewField, +// return new dynamic messages of the appropriate type. Functions which take +// messages, such as Set for a message-value field, will accept any message +// with a compatible type. +// +// Operations which modify a Message are not safe for concurrent use. +type Message struct { + typ messageType + known map[protoreflect.FieldNumber]protoreflect.Value + ext map[protoreflect.FieldNumber]protoreflect.FieldDescriptor + unknown protoreflect.RawFields +} + +var ( + _ protoreflect.Message = (*Message)(nil) + _ protoreflect.ProtoMessage = (*Message)(nil) + _ protoiface.MessageV1 = (*Message)(nil) +) + +// NewMessage creates a new message with the provided descriptor. +func NewMessage(desc protoreflect.MessageDescriptor) *Message { + return &Message{ + typ: messageType{desc}, + known: make(map[protoreflect.FieldNumber]protoreflect.Value), + ext: make(map[protoreflect.FieldNumber]protoreflect.FieldDescriptor), + } +} + +// ProtoMessage implements the legacy message interface. +func (m *Message) ProtoMessage() {} + +// ProtoReflect implements the [protoreflect.ProtoMessage] interface. +func (m *Message) ProtoReflect() protoreflect.Message { + return m +} + +// String returns a string representation of a message. +func (m *Message) String() string { + return protoimpl.X.MessageStringOf(m) +} + +// Reset clears the message to be empty, but preserves the dynamic message type. +func (m *Message) Reset() { + m.known = make(map[protoreflect.FieldNumber]protoreflect.Value) + m.ext = make(map[protoreflect.FieldNumber]protoreflect.FieldDescriptor) + m.unknown = nil +} + +// Descriptor returns the message descriptor. +func (m *Message) Descriptor() protoreflect.MessageDescriptor { + return m.typ.desc +} + +// Type returns the message type. +func (m *Message) Type() protoreflect.MessageType { + return m.typ +} + +// New returns a newly allocated empty message with the same descriptor. +// See [protoreflect.Message] for details. +func (m *Message) New() protoreflect.Message { + return m.Type().New() +} + +// Interface returns the message. +// See [protoreflect.Message] for details. +func (m *Message) Interface() protoreflect.ProtoMessage { + return m +} + +// ProtoMethods is an internal detail of the [protoreflect.Message] interface. +// Users should never call this directly. +func (m *Message) ProtoMethods() *protoiface.Methods { + return nil +} + +// Range visits every populated field in undefined order. +// See [protoreflect.Message] for details. +func (m *Message) Range(f func(protoreflect.FieldDescriptor, protoreflect.Value) bool) { + for num, v := range m.known { + fd := m.ext[num] + if fd == nil { + fd = m.Descriptor().Fields().ByNumber(num) + } + if !isSet(fd, v) { + continue + } + if !f(fd, v) { + return + } + } +} + +// Has reports whether a field is populated. +// See [protoreflect.Message] for details. +func (m *Message) Has(fd protoreflect.FieldDescriptor) bool { + m.checkField(fd) + if fd.IsExtension() && m.ext[fd.Number()] != fd { + return false + } + v, ok := m.known[fd.Number()] + if !ok { + return false + } + return isSet(fd, v) +} + +// Clear clears a field. +// See [protoreflect.Message] for details. +func (m *Message) Clear(fd protoreflect.FieldDescriptor) { + m.checkField(fd) + num := fd.Number() + delete(m.known, num) + delete(m.ext, num) +} + +// Get returns the value of a field. +// See [protoreflect.Message] for details. +func (m *Message) Get(fd protoreflect.FieldDescriptor) protoreflect.Value { + m.checkField(fd) + num := fd.Number() + if fd.IsExtension() { + if fd != m.ext[num] { + return fd.(protoreflect.ExtensionTypeDescriptor).Type().Zero() + } + return m.known[num] + } + if v, ok := m.known[num]; ok { + switch { + case fd.IsMap(): + if v.Map().Len() > 0 { + return v + } + case fd.IsList(): + if v.List().Len() > 0 { + return v + } + default: + return v + } + } + switch { + case fd.IsMap(): + return protoreflect.ValueOfMap(&dynamicMap{desc: fd}) + case fd.IsList(): + return protoreflect.ValueOfList(emptyList{desc: fd}) + case fd.Message() != nil: + return protoreflect.ValueOfMessage(&Message{typ: messageType{fd.Message()}}) + case fd.Kind() == protoreflect.BytesKind: + return protoreflect.ValueOfBytes(append([]byte(nil), fd.Default().Bytes()...)) + default: + return fd.Default() + } +} + +// Mutable returns a mutable reference to a repeated, map, or message field. +// See [protoreflect.Message] for details. +func (m *Message) Mutable(fd protoreflect.FieldDescriptor) protoreflect.Value { + m.checkField(fd) + if !fd.IsMap() && !fd.IsList() && fd.Message() == nil { + panic(errors.New("%v: getting mutable reference to non-composite type", fd.FullName())) + } + if m.known == nil { + panic(errors.New("%v: modification of read-only message", fd.FullName())) + } + num := fd.Number() + if fd.IsExtension() { + if fd != m.ext[num] { + m.ext[num] = fd + m.known[num] = fd.(protoreflect.ExtensionTypeDescriptor).Type().New() + } + return m.known[num] + } + if v, ok := m.known[num]; ok { + return v + } + m.clearOtherOneofFields(fd) + m.known[num] = m.NewField(fd) + if fd.IsExtension() { + m.ext[num] = fd + } + return m.known[num] +} + +// Set stores a value in a field. +// See [protoreflect.Message] for details. +func (m *Message) Set(fd protoreflect.FieldDescriptor, v protoreflect.Value) { + m.checkField(fd) + if m.known == nil { + panic(errors.New("%v: modification of read-only message", fd.FullName())) + } + if fd.IsExtension() { + isValid := true + switch { + case !fd.(protoreflect.ExtensionTypeDescriptor).Type().IsValidValue(v): + isValid = false + case fd.IsList(): + isValid = v.List().IsValid() + case fd.IsMap(): + isValid = v.Map().IsValid() + case fd.Message() != nil: + isValid = v.Message().IsValid() + } + if !isValid { + panic(errors.New("%v: assigning invalid type %T", fd.FullName(), v.Interface())) + } + m.ext[fd.Number()] = fd + } else { + typecheck(fd, v) + } + m.clearOtherOneofFields(fd) + m.known[fd.Number()] = v +} + +func (m *Message) clearOtherOneofFields(fd protoreflect.FieldDescriptor) { + od := fd.ContainingOneof() + if od == nil { + return + } + num := fd.Number() + for i := 0; i < od.Fields().Len(); i++ { + if n := od.Fields().Get(i).Number(); n != num { + delete(m.known, n) + } + } +} + +// NewField returns a new value for assignable to the field of a given descriptor. +// See [protoreflect.Message] for details. +func (m *Message) NewField(fd protoreflect.FieldDescriptor) protoreflect.Value { + m.checkField(fd) + switch { + case fd.IsExtension(): + return fd.(protoreflect.ExtensionTypeDescriptor).Type().New() + case fd.IsMap(): + return protoreflect.ValueOfMap(&dynamicMap{ + desc: fd, + mapv: make(map[any]protoreflect.Value), + }) + case fd.IsList(): + return protoreflect.ValueOfList(&dynamicList{desc: fd}) + case fd.Message() != nil: + return protoreflect.ValueOfMessage(NewMessage(fd.Message()).ProtoReflect()) + default: + return fd.Default() + } +} + +// WhichOneof reports which field in a oneof is populated, returning nil if none are populated. +// See [protoreflect.Message] for details. +func (m *Message) WhichOneof(od protoreflect.OneofDescriptor) protoreflect.FieldDescriptor { + for i := 0; i < od.Fields().Len(); i++ { + fd := od.Fields().Get(i) + if m.Has(fd) { + return fd + } + } + return nil +} + +// GetUnknown returns the raw unknown fields. +// See [protoreflect.Message] for details. +func (m *Message) GetUnknown() protoreflect.RawFields { + return m.unknown +} + +// SetUnknown sets the raw unknown fields. +// See [protoreflect.Message] for details. +func (m *Message) SetUnknown(r protoreflect.RawFields) { + if m.known == nil { + panic(errors.New("%v: modification of read-only message", m.typ.desc.FullName())) + } + m.unknown = r +} + +// IsValid reports whether the message is valid. +// See [protoreflect.Message] for details. +func (m *Message) IsValid() bool { + return m.known != nil +} + +func (m *Message) checkField(fd protoreflect.FieldDescriptor) { + if fd.IsExtension() && fd.ContainingMessage().FullName() == m.Descriptor().FullName() { + if _, ok := fd.(protoreflect.ExtensionTypeDescriptor); !ok { + panic(errors.New("%v: extension field descriptor does not implement ExtensionTypeDescriptor", fd.FullName())) + } + return + } + if fd.Parent() == m.Descriptor() { + return + } + fields := m.Descriptor().Fields() + index := fd.Index() + if index >= fields.Len() || fields.Get(index) != fd { + panic(errors.New("%v: field descriptor does not belong to this message", fd.FullName())) + } +} + +type messageType struct { + desc protoreflect.MessageDescriptor +} + +// NewMessageType creates a new MessageType with the provided descriptor. +// +// MessageTypes created by this package are equal if their descriptors are equal. +// That is, if md1 == md2, then NewMessageType(md1) == NewMessageType(md2). +func NewMessageType(desc protoreflect.MessageDescriptor) protoreflect.MessageType { + return messageType{desc} +} + +func (mt messageType) New() protoreflect.Message { return NewMessage(mt.desc) } +func (mt messageType) Zero() protoreflect.Message { return &Message{typ: messageType{mt.desc}} } +func (mt messageType) Descriptor() protoreflect.MessageDescriptor { return mt.desc } +func (mt messageType) Enum(i int) protoreflect.EnumType { + if ed := mt.desc.Fields().Get(i).Enum(); ed != nil { + return NewEnumType(ed) + } + return nil +} +func (mt messageType) Message(i int) protoreflect.MessageType { + if md := mt.desc.Fields().Get(i).Message(); md != nil { + return NewMessageType(md) + } + return nil +} + +type emptyList struct { + desc protoreflect.FieldDescriptor +} + +func (x emptyList) Len() int { return 0 } +func (x emptyList) Get(n int) protoreflect.Value { panic(errors.New("out of range")) } +func (x emptyList) Set(n int, v protoreflect.Value) { + panic(errors.New("modification of immutable list")) +} +func (x emptyList) Append(v protoreflect.Value) { panic(errors.New("modification of immutable list")) } +func (x emptyList) AppendMutable() protoreflect.Value { + panic(errors.New("modification of immutable list")) +} +func (x emptyList) Truncate(n int) { panic(errors.New("modification of immutable list")) } +func (x emptyList) NewElement() protoreflect.Value { return newListEntry(x.desc) } +func (x emptyList) IsValid() bool { return false } + +type dynamicList struct { + desc protoreflect.FieldDescriptor + list []protoreflect.Value +} + +func (x *dynamicList) Len() int { + return len(x.list) +} + +func (x *dynamicList) Get(n int) protoreflect.Value { + return x.list[n] +} + +func (x *dynamicList) Set(n int, v protoreflect.Value) { + typecheckSingular(x.desc, v) + x.list[n] = v +} + +func (x *dynamicList) Append(v protoreflect.Value) { + typecheckSingular(x.desc, v) + x.list = append(x.list, v) +} + +func (x *dynamicList) AppendMutable() protoreflect.Value { + if x.desc.Message() == nil { + panic(errors.New("%v: invalid AppendMutable on list with non-message type", x.desc.FullName())) + } + v := x.NewElement() + x.Append(v) + return v +} + +func (x *dynamicList) Truncate(n int) { + // Zero truncated elements to avoid keeping data live. + for i := n; i < len(x.list); i++ { + x.list[i] = protoreflect.Value{} + } + x.list = x.list[:n] +} + +func (x *dynamicList) NewElement() protoreflect.Value { + return newListEntry(x.desc) +} + +func (x *dynamicList) IsValid() bool { + return true +} + +type dynamicMap struct { + desc protoreflect.FieldDescriptor + mapv map[any]protoreflect.Value +} + +func (x *dynamicMap) Get(k protoreflect.MapKey) protoreflect.Value { return x.mapv[k.Interface()] } +func (x *dynamicMap) Set(k protoreflect.MapKey, v protoreflect.Value) { + typecheckSingular(x.desc.MapKey(), k.Value()) + typecheckSingular(x.desc.MapValue(), v) + x.mapv[k.Interface()] = v +} +func (x *dynamicMap) Has(k protoreflect.MapKey) bool { return x.Get(k).IsValid() } +func (x *dynamicMap) Clear(k protoreflect.MapKey) { delete(x.mapv, k.Interface()) } +func (x *dynamicMap) Mutable(k protoreflect.MapKey) protoreflect.Value { + if x.desc.MapValue().Message() == nil { + panic(errors.New("%v: invalid Mutable on map with non-message value type", x.desc.FullName())) + } + v := x.Get(k) + if !v.IsValid() { + v = x.NewValue() + x.Set(k, v) + } + return v +} +func (x *dynamicMap) Len() int { return len(x.mapv) } +func (x *dynamicMap) NewValue() protoreflect.Value { + if md := x.desc.MapValue().Message(); md != nil { + return protoreflect.ValueOfMessage(NewMessage(md).ProtoReflect()) + } + return x.desc.MapValue().Default() +} +func (x *dynamicMap) IsValid() bool { + return x.mapv != nil +} + +func (x *dynamicMap) Range(f func(protoreflect.MapKey, protoreflect.Value) bool) { + for k, v := range x.mapv { + if !f(protoreflect.ValueOf(k).MapKey(), v) { + return + } + } +} + +func isSet(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool { + switch { + case fd.IsMap(): + return v.Map().Len() > 0 + case fd.IsList(): + return v.List().Len() > 0 + case fd.ContainingOneof() != nil: + return true + case !fd.HasPresence() && !fd.IsExtension(): + switch fd.Kind() { + case protoreflect.BoolKind: + return v.Bool() + case protoreflect.EnumKind: + return v.Enum() != 0 + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed32Kind, protoreflect.Sfixed64Kind: + return v.Int() != 0 + case protoreflect.Uint32Kind, protoreflect.Uint64Kind, protoreflect.Fixed32Kind, protoreflect.Fixed64Kind: + return v.Uint() != 0 + case protoreflect.FloatKind, protoreflect.DoubleKind: + return v.Float() != 0 || math.Signbit(v.Float()) + case protoreflect.StringKind: + return v.String() != "" + case protoreflect.BytesKind: + return len(v.Bytes()) > 0 + } + } + return true +} + +func typecheck(fd protoreflect.FieldDescriptor, v protoreflect.Value) { + if err := typeIsValid(fd, v); err != nil { + panic(err) + } +} + +func typeIsValid(fd protoreflect.FieldDescriptor, v protoreflect.Value) error { + switch { + case !v.IsValid(): + return errors.New("%v: assigning invalid value", fd.FullName()) + case fd.IsMap(): + if mapv, ok := v.Interface().(*dynamicMap); !ok || mapv.desc != fd || !mapv.IsValid() { + return errors.New("%v: assigning invalid type %T", fd.FullName(), v.Interface()) + } + return nil + case fd.IsList(): + switch list := v.Interface().(type) { + case *dynamicList: + if list.desc == fd && list.IsValid() { + return nil + } + case emptyList: + if list.desc == fd && list.IsValid() { + return nil + } + } + return errors.New("%v: assigning invalid type %T", fd.FullName(), v.Interface()) + default: + return singularTypeIsValid(fd, v) + } +} + +func typecheckSingular(fd protoreflect.FieldDescriptor, v protoreflect.Value) { + if err := singularTypeIsValid(fd, v); err != nil { + panic(err) + } +} + +func singularTypeIsValid(fd protoreflect.FieldDescriptor, v protoreflect.Value) error { + vi := v.Interface() + var ok bool + switch fd.Kind() { + case protoreflect.BoolKind: + _, ok = vi.(bool) + case protoreflect.EnumKind: + // We could check against the valid set of enum values, but do not. + _, ok = vi.(protoreflect.EnumNumber) + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + _, ok = vi.(int32) + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + _, ok = vi.(uint32) + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + _, ok = vi.(int64) + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + _, ok = vi.(uint64) + case protoreflect.FloatKind: + _, ok = vi.(float32) + case protoreflect.DoubleKind: + _, ok = vi.(float64) + case protoreflect.StringKind: + _, ok = vi.(string) + case protoreflect.BytesKind: + _, ok = vi.([]byte) + case protoreflect.MessageKind, protoreflect.GroupKind: + var m protoreflect.Message + m, ok = vi.(protoreflect.Message) + if ok && m.Descriptor().FullName() != fd.Message().FullName() { + return errors.New("%v: assigning invalid message type %v", fd.FullName(), m.Descriptor().FullName()) + } + if dm, ok := vi.(*Message); ok && dm.known == nil { + return errors.New("%v: assigning invalid zero-value message", fd.FullName()) + } + } + if !ok { + return errors.New("%v: assigning invalid type %T", fd.FullName(), v.Interface()) + } + return nil +} + +func newListEntry(fd protoreflect.FieldDescriptor) protoreflect.Value { + switch fd.Kind() { + case protoreflect.BoolKind: + return protoreflect.ValueOfBool(false) + case protoreflect.EnumKind: + return protoreflect.ValueOfEnum(fd.Enum().Values().Get(0).Number()) + case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: + return protoreflect.ValueOfInt32(0) + case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: + return protoreflect.ValueOfUint32(0) + case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: + return protoreflect.ValueOfInt64(0) + case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: + return protoreflect.ValueOfUint64(0) + case protoreflect.FloatKind: + return protoreflect.ValueOfFloat32(0) + case protoreflect.DoubleKind: + return protoreflect.ValueOfFloat64(0) + case protoreflect.StringKind: + return protoreflect.ValueOfString("") + case protoreflect.BytesKind: + return protoreflect.ValueOfBytes(nil) + case protoreflect.MessageKind, protoreflect.GroupKind: + return protoreflect.ValueOfMessage(NewMessage(fd.Message()).ProtoReflect()) + } + panic(errors.New("%v: unknown kind %v", fd.FullName(), fd.Kind())) +} + +// NewExtensionType creates a new ExtensionType with the provided descriptor. +// +// Dynamic ExtensionTypes with the same descriptor compare as equal. That is, +// if xd1 == xd2, then NewExtensionType(xd1) == NewExtensionType(xd2). +// +// The InterfaceOf and ValueOf methods of the extension type are defined as: +// +// func (xt extensionType) ValueOf(iv any) protoreflect.Value { +// return protoreflect.ValueOf(iv) +// } +// +// func (xt extensionType) InterfaceOf(v protoreflect.Value) any { +// return v.Interface() +// } +// +// The Go type used by the proto.GetExtension and proto.SetExtension functions +// is determined by these methods, and is therefore equivalent to the Go type +// used to represent a protoreflect.Value. See the protoreflect.Value +// documentation for more details. +func NewExtensionType(desc protoreflect.ExtensionDescriptor) protoreflect.ExtensionType { + if xt, ok := desc.(protoreflect.ExtensionTypeDescriptor); ok { + desc = xt.Descriptor() + } + return extensionType{extensionTypeDescriptor{desc}} +} + +func (xt extensionType) New() protoreflect.Value { + switch { + case xt.desc.IsMap(): + return protoreflect.ValueOfMap(&dynamicMap{ + desc: xt.desc, + mapv: make(map[any]protoreflect.Value), + }) + case xt.desc.IsList(): + return protoreflect.ValueOfList(&dynamicList{desc: xt.desc}) + case xt.desc.Message() != nil: + return protoreflect.ValueOfMessage(NewMessage(xt.desc.Message())) + default: + return xt.desc.Default() + } +} + +func (xt extensionType) Zero() protoreflect.Value { + switch { + case xt.desc.IsMap(): + return protoreflect.ValueOfMap(&dynamicMap{desc: xt.desc}) + case xt.desc.Cardinality() == protoreflect.Repeated: + return protoreflect.ValueOfList(emptyList{desc: xt.desc}) + case xt.desc.Message() != nil: + return protoreflect.ValueOfMessage(&Message{typ: messageType{xt.desc.Message()}}) + default: + return xt.desc.Default() + } +} + +func (xt extensionType) TypeDescriptor() protoreflect.ExtensionTypeDescriptor { + return xt.desc +} + +func (xt extensionType) ValueOf(iv any) protoreflect.Value { + v := protoreflect.ValueOf(iv) + typecheck(xt.desc, v) + return v +} + +func (xt extensionType) InterfaceOf(v protoreflect.Value) any { + typecheck(xt.desc, v) + return v.Interface() +} + +func (xt extensionType) IsValidInterface(iv any) bool { + return typeIsValid(xt.desc, protoreflect.ValueOf(iv)) == nil +} + +func (xt extensionType) IsValidValue(v protoreflect.Value) bool { + return typeIsValid(xt.desc, v) == nil +} + +type extensionTypeDescriptor struct { + protoreflect.ExtensionDescriptor +} + +func (xt extensionTypeDescriptor) Type() protoreflect.ExtensionType { + return extensionType{xt} +} + +func (xt extensionTypeDescriptor) Descriptor() protoreflect.ExtensionDescriptor { + return xt.ExtensionDescriptor +} diff --git a/vendor/google.golang.org/protobuf/types/dynamicpb/types.go b/vendor/google.golang.org/protobuf/types/dynamicpb/types.go new file mode 100644 index 0000000000..8e759fc9f7 --- /dev/null +++ b/vendor/google.golang.org/protobuf/types/dynamicpb/types.go @@ -0,0 +1,180 @@ +// Copyright 2023 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package dynamicpb + +import ( + "fmt" + "strings" + "sync" + "sync/atomic" + + "google.golang.org/protobuf/internal/errors" + "google.golang.org/protobuf/reflect/protoreflect" + "google.golang.org/protobuf/reflect/protoregistry" +) + +type extField struct { + name protoreflect.FullName + number protoreflect.FieldNumber +} + +// A Types is a collection of dynamically constructed descriptors. +// Its methods are safe for concurrent use. +// +// Types implements [protoregistry.MessageTypeResolver] and [protoregistry.ExtensionTypeResolver]. +// A Types may be used as a [google.golang.org/protobuf/proto.UnmarshalOptions.Resolver]. +type Types struct { + // atomicExtFiles is used with sync/atomic and hence must be the first word + // of the struct to guarantee 64-bit alignment. + atomicExtFiles atomic.Uint64 + extMu sync.Mutex + + files *protoregistry.Files + + extensionsByMessage map[extField]protoreflect.ExtensionDescriptor +} + +// NewTypes creates a new Types registry with the provided files. +// The Files registry is retained, and changes to Files will be reflected in Types. +// It is not safe to concurrently change the Files while calling Types methods. +func NewTypes(f *protoregistry.Files) *Types { + return &Types{ + files: f, + } +} + +// FindEnumByName looks up an enum by its full name; +// e.g., "google.protobuf.Field.Kind". +// +// This returns (nil, [protoregistry.NotFound]) if not found. +func (t *Types) FindEnumByName(name protoreflect.FullName) (protoreflect.EnumType, error) { + d, err := t.files.FindDescriptorByName(name) + if err != nil { + return nil, err + } + ed, ok := d.(protoreflect.EnumDescriptor) + if !ok { + return nil, errors.New("found wrong type: got %v, want enum", descName(d)) + } + return NewEnumType(ed), nil +} + +// FindExtensionByName looks up an extension field by the field's full name. +// Note that this is the full name of the field as determined by +// where the extension is declared and is unrelated to the full name of the +// message being extended. +// +// This returns (nil, [protoregistry.NotFound]) if not found. +func (t *Types) FindExtensionByName(name protoreflect.FullName) (protoreflect.ExtensionType, error) { + d, err := t.files.FindDescriptorByName(name) + if err != nil { + return nil, err + } + xd, ok := d.(protoreflect.ExtensionDescriptor) + if !ok { + return nil, errors.New("found wrong type: got %v, want extension", descName(d)) + } + return NewExtensionType(xd), nil +} + +// FindExtensionByNumber looks up an extension field by the field number +// within some parent message, identified by full name. +// +// This returns (nil, [protoregistry.NotFound]) if not found. +func (t *Types) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) { + // Construct the extension number map lazily, since not every user will need it. + // Update the map if new files are added to the registry. + if t.atomicExtFiles.Load() != uint64(t.files.NumFiles()) { + t.updateExtensions() + } + xd := t.extensionsByMessage[extField{message, field}] + if xd == nil { + return nil, protoregistry.NotFound + } + return NewExtensionType(xd), nil +} + +// FindMessageByName looks up a message by its full name; +// e.g. "google.protobuf.Any". +// +// This returns (nil, [protoregistry.NotFound]) if not found. +func (t *Types) FindMessageByName(name protoreflect.FullName) (protoreflect.MessageType, error) { + d, err := t.files.FindDescriptorByName(name) + if err != nil { + return nil, err + } + md, ok := d.(protoreflect.MessageDescriptor) + if !ok { + return nil, errors.New("found wrong type: got %v, want message", descName(d)) + } + return NewMessageType(md), nil +} + +// FindMessageByURL looks up a message by a URL identifier. +// See documentation on google.protobuf.Any.type_url for the URL format. +// +// This returns (nil, [protoregistry.NotFound]) if not found. +func (t *Types) FindMessageByURL(url string) (protoreflect.MessageType, error) { + // This function is similar to FindMessageByName but + // truncates anything before and including '/' in the URL. + message := protoreflect.FullName(url) + if i := strings.LastIndexByte(url, '/'); i >= 0 { + message = message[i+len("/"):] + } + return t.FindMessageByName(message) +} + +func (t *Types) updateExtensions() { + t.extMu.Lock() + defer t.extMu.Unlock() + if t.atomicExtFiles.Load() == uint64(t.files.NumFiles()) { + return + } + defer t.atomicExtFiles.Store(uint64(t.files.NumFiles())) + t.files.RangeFiles(func(fd protoreflect.FileDescriptor) bool { + t.registerExtensions(fd.Extensions()) + t.registerExtensionsInMessages(fd.Messages()) + return true + }) +} + +func (t *Types) registerExtensionsInMessages(mds protoreflect.MessageDescriptors) { + count := mds.Len() + for i := 0; i < count; i++ { + md := mds.Get(i) + t.registerExtensions(md.Extensions()) + t.registerExtensionsInMessages(md.Messages()) + } +} + +func (t *Types) registerExtensions(xds protoreflect.ExtensionDescriptors) { + count := xds.Len() + for i := 0; i < count; i++ { + xd := xds.Get(i) + field := xd.Number() + message := xd.ContainingMessage().FullName() + if t.extensionsByMessage == nil { + t.extensionsByMessage = make(map[extField]protoreflect.ExtensionDescriptor) + } + t.extensionsByMessage[extField{message, field}] = xd + } +} + +func descName(d protoreflect.Descriptor) string { + switch d.(type) { + case protoreflect.EnumDescriptor: + return "enum" + case protoreflect.EnumValueDescriptor: + return "enum value" + case protoreflect.MessageDescriptor: + return "message" + case protoreflect.ExtensionDescriptor: + return "extension" + case protoreflect.ServiceDescriptor: + return "service" + default: + return fmt.Sprintf("%T", d) + } +} diff --git a/vendor/google.golang.org/protobuf/types/gofeaturespb/go_features.pb.go b/vendor/google.golang.org/protobuf/types/gofeaturespb/go_features.pb.go new file mode 100644 index 0000000000..37e712b6b7 --- /dev/null +++ b/vendor/google.golang.org/protobuf/types/gofeaturespb/go_features.pb.go @@ -0,0 +1,311 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2023 Google Inc. All rights reserved. +// +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file or at +// https://developers.google.com/open-source/licenses/bsd + +// Code generated by protoc-gen-go. DO NOT EDIT. +// source: google/protobuf/go_features.proto + +package gofeaturespb + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + descriptorpb "google.golang.org/protobuf/types/descriptorpb" + reflect "reflect" + sync "sync" + unsafe "unsafe" +) + +type GoFeatures_APILevel int32 + +const ( + // API_LEVEL_UNSPECIFIED results in selecting the OPEN API, + // but needs to be a separate value to distinguish between + // an explicitly set api level or a missing api level. + GoFeatures_API_LEVEL_UNSPECIFIED GoFeatures_APILevel = 0 + GoFeatures_API_OPEN GoFeatures_APILevel = 1 + GoFeatures_API_HYBRID GoFeatures_APILevel = 2 + GoFeatures_API_OPAQUE GoFeatures_APILevel = 3 +) + +// Enum value maps for GoFeatures_APILevel. +var ( + GoFeatures_APILevel_name = map[int32]string{ + 0: "API_LEVEL_UNSPECIFIED", + 1: "API_OPEN", + 2: "API_HYBRID", + 3: "API_OPAQUE", + } + GoFeatures_APILevel_value = map[string]int32{ + "API_LEVEL_UNSPECIFIED": 0, + "API_OPEN": 1, + "API_HYBRID": 2, + "API_OPAQUE": 3, + } +) + +func (x GoFeatures_APILevel) Enum() *GoFeatures_APILevel { + p := new(GoFeatures_APILevel) + *p = x + return p +} + +func (x GoFeatures_APILevel) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (GoFeatures_APILevel) Descriptor() protoreflect.EnumDescriptor { + return file_google_protobuf_go_features_proto_enumTypes[0].Descriptor() +} + +func (GoFeatures_APILevel) Type() protoreflect.EnumType { + return &file_google_protobuf_go_features_proto_enumTypes[0] +} + +func (x GoFeatures_APILevel) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Do not use. +func (x *GoFeatures_APILevel) UnmarshalJSON(b []byte) error { + num, err := protoimpl.X.UnmarshalJSONEnum(x.Descriptor(), b) + if err != nil { + return err + } + *x = GoFeatures_APILevel(num) + return nil +} + +// Deprecated: Use GoFeatures_APILevel.Descriptor instead. +func (GoFeatures_APILevel) EnumDescriptor() ([]byte, []int) { + return file_google_protobuf_go_features_proto_rawDescGZIP(), []int{0, 0} +} + +type GoFeatures_StripEnumPrefix int32 + +const ( + GoFeatures_STRIP_ENUM_PREFIX_UNSPECIFIED GoFeatures_StripEnumPrefix = 0 + GoFeatures_STRIP_ENUM_PREFIX_KEEP GoFeatures_StripEnumPrefix = 1 + GoFeatures_STRIP_ENUM_PREFIX_GENERATE_BOTH GoFeatures_StripEnumPrefix = 2 + GoFeatures_STRIP_ENUM_PREFIX_STRIP GoFeatures_StripEnumPrefix = 3 +) + +// Enum value maps for GoFeatures_StripEnumPrefix. +var ( + GoFeatures_StripEnumPrefix_name = map[int32]string{ + 0: "STRIP_ENUM_PREFIX_UNSPECIFIED", + 1: "STRIP_ENUM_PREFIX_KEEP", + 2: "STRIP_ENUM_PREFIX_GENERATE_BOTH", + 3: "STRIP_ENUM_PREFIX_STRIP", + } + GoFeatures_StripEnumPrefix_value = map[string]int32{ + "STRIP_ENUM_PREFIX_UNSPECIFIED": 0, + "STRIP_ENUM_PREFIX_KEEP": 1, + "STRIP_ENUM_PREFIX_GENERATE_BOTH": 2, + "STRIP_ENUM_PREFIX_STRIP": 3, + } +) + +func (x GoFeatures_StripEnumPrefix) Enum() *GoFeatures_StripEnumPrefix { + p := new(GoFeatures_StripEnumPrefix) + *p = x + return p +} + +func (x GoFeatures_StripEnumPrefix) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (GoFeatures_StripEnumPrefix) Descriptor() protoreflect.EnumDescriptor { + return file_google_protobuf_go_features_proto_enumTypes[1].Descriptor() +} + +func (GoFeatures_StripEnumPrefix) Type() protoreflect.EnumType { + return &file_google_protobuf_go_features_proto_enumTypes[1] +} + +func (x GoFeatures_StripEnumPrefix) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Do not use. +func (x *GoFeatures_StripEnumPrefix) UnmarshalJSON(b []byte) error { + num, err := protoimpl.X.UnmarshalJSONEnum(x.Descriptor(), b) + if err != nil { + return err + } + *x = GoFeatures_StripEnumPrefix(num) + return nil +} + +// Deprecated: Use GoFeatures_StripEnumPrefix.Descriptor instead. +func (GoFeatures_StripEnumPrefix) EnumDescriptor() ([]byte, []int) { + return file_google_protobuf_go_features_proto_rawDescGZIP(), []int{0, 1} +} + +type GoFeatures struct { + state protoimpl.MessageState `protogen:"open.v1"` + // Whether or not to generate the deprecated UnmarshalJSON method for enums. + // Can only be true for proto using the Open Struct api. + LegacyUnmarshalJsonEnum *bool `protobuf:"varint,1,opt,name=legacy_unmarshal_json_enum,json=legacyUnmarshalJsonEnum" json:"legacy_unmarshal_json_enum,omitempty"` + // One of OPEN, HYBRID or OPAQUE. + ApiLevel *GoFeatures_APILevel `protobuf:"varint,2,opt,name=api_level,json=apiLevel,enum=pb.GoFeatures_APILevel" json:"api_level,omitempty"` + StripEnumPrefix *GoFeatures_StripEnumPrefix `protobuf:"varint,3,opt,name=strip_enum_prefix,json=stripEnumPrefix,enum=pb.GoFeatures_StripEnumPrefix" json:"strip_enum_prefix,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *GoFeatures) Reset() { + *x = GoFeatures{} + mi := &file_google_protobuf_go_features_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *GoFeatures) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*GoFeatures) ProtoMessage() {} + +func (x *GoFeatures) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_go_features_proto_msgTypes[0] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use GoFeatures.ProtoReflect.Descriptor instead. +func (*GoFeatures) Descriptor() ([]byte, []int) { + return file_google_protobuf_go_features_proto_rawDescGZIP(), []int{0} +} + +func (x *GoFeatures) GetLegacyUnmarshalJsonEnum() bool { + if x != nil && x.LegacyUnmarshalJsonEnum != nil { + return *x.LegacyUnmarshalJsonEnum + } + return false +} + +func (x *GoFeatures) GetApiLevel() GoFeatures_APILevel { + if x != nil && x.ApiLevel != nil { + return *x.ApiLevel + } + return GoFeatures_API_LEVEL_UNSPECIFIED +} + +func (x *GoFeatures) GetStripEnumPrefix() GoFeatures_StripEnumPrefix { + if x != nil && x.StripEnumPrefix != nil { + return *x.StripEnumPrefix + } + return GoFeatures_STRIP_ENUM_PREFIX_UNSPECIFIED +} + +var file_google_protobuf_go_features_proto_extTypes = []protoimpl.ExtensionInfo{ + { + ExtendedType: (*descriptorpb.FeatureSet)(nil), + ExtensionType: (*GoFeatures)(nil), + Field: 1002, + Name: "pb.go", + Tag: "bytes,1002,opt,name=go", + Filename: "google/protobuf/go_features.proto", + }, +} + +// Extension fields to descriptorpb.FeatureSet. +var ( + // optional pb.GoFeatures go = 1002; + E_Go = &file_google_protobuf_go_features_proto_extTypes[0] +) + +var File_google_protobuf_go_features_proto protoreflect.FileDescriptor + +const file_google_protobuf_go_features_proto_rawDesc = "" + + "\n" + + "!google/protobuf/go_features.proto\x12\x02pb\x1a google/protobuf/descriptor.proto\"\xab\x05\n" + + "\n" + + "GoFeatures\x12\xbe\x01\n" + + "\x1alegacy_unmarshal_json_enum\x18\x01 \x01(\bB\x80\x01\x88\x01\x01\x98\x01\x06\x98\x01\x01\xa2\x01\t\x12\x04true\x18\x84\a\xa2\x01\n" + + "\x12\x05false\x18\xe7\a\xb2\x01[\b\xe8\a\x10\xe8\a\x1aSThe legacy UnmarshalJSON API is deprecated and will be removed in a future edition.R\x17legacyUnmarshalJsonEnum\x12t\n" + + "\tapi_level\x18\x02 \x01(\x0e2\x17.pb.GoFeatures.APILevelB>\x88\x01\x01\x98\x01\x03\x98\x01\x01\xa2\x01\x1a\x12\x15API_LEVEL_UNSPECIFIED\x18\x84\a\xa2\x01\x0f\x12\n" + + "API_OPAQUE\x18\xe9\a\xb2\x01\x03\b\xe8\aR\bapiLevel\x12|\n" + + "\x11strip_enum_prefix\x18\x03 \x01(\x0e2\x1e.pb.GoFeatures.StripEnumPrefixB0\x88\x01\x01\x98\x01\x06\x98\x01\a\x98\x01\x01\xa2\x01\x1b\x12\x16STRIP_ENUM_PREFIX_KEEP\x18\x84\a\xb2\x01\x03\b\xe9\aR\x0fstripEnumPrefix\"S\n" + + "\bAPILevel\x12\x19\n" + + "\x15API_LEVEL_UNSPECIFIED\x10\x00\x12\f\n" + + "\bAPI_OPEN\x10\x01\x12\x0e\n" + + "\n" + + "API_HYBRID\x10\x02\x12\x0e\n" + + "\n" + + "API_OPAQUE\x10\x03\"\x92\x01\n" + + "\x0fStripEnumPrefix\x12!\n" + + "\x1dSTRIP_ENUM_PREFIX_UNSPECIFIED\x10\x00\x12\x1a\n" + + "\x16STRIP_ENUM_PREFIX_KEEP\x10\x01\x12#\n" + + "\x1fSTRIP_ENUM_PREFIX_GENERATE_BOTH\x10\x02\x12\x1b\n" + + "\x17STRIP_ENUM_PREFIX_STRIP\x10\x03:<\n" + + "\x02go\x12\x1b.google.protobuf.FeatureSet\x18\xea\a \x01(\v2\x0e.pb.GoFeaturesR\x02goB/Z-google.golang.org/protobuf/types/gofeaturespb" + +var ( + file_google_protobuf_go_features_proto_rawDescOnce sync.Once + file_google_protobuf_go_features_proto_rawDescData []byte +) + +func file_google_protobuf_go_features_proto_rawDescGZIP() []byte { + file_google_protobuf_go_features_proto_rawDescOnce.Do(func() { + file_google_protobuf_go_features_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_google_protobuf_go_features_proto_rawDesc), len(file_google_protobuf_go_features_proto_rawDesc))) + }) + return file_google_protobuf_go_features_proto_rawDescData +} + +var file_google_protobuf_go_features_proto_enumTypes = make([]protoimpl.EnumInfo, 2) +var file_google_protobuf_go_features_proto_msgTypes = make([]protoimpl.MessageInfo, 1) +var file_google_protobuf_go_features_proto_goTypes = []any{ + (GoFeatures_APILevel)(0), // 0: pb.GoFeatures.APILevel + (GoFeatures_StripEnumPrefix)(0), // 1: pb.GoFeatures.StripEnumPrefix + (*GoFeatures)(nil), // 2: pb.GoFeatures + (*descriptorpb.FeatureSet)(nil), // 3: google.protobuf.FeatureSet +} +var file_google_protobuf_go_features_proto_depIdxs = []int32{ + 0, // 0: pb.GoFeatures.api_level:type_name -> pb.GoFeatures.APILevel + 1, // 1: pb.GoFeatures.strip_enum_prefix:type_name -> pb.GoFeatures.StripEnumPrefix + 3, // 2: pb.go:extendee -> google.protobuf.FeatureSet + 2, // 3: pb.go:type_name -> pb.GoFeatures + 4, // [4:4] is the sub-list for method output_type + 4, // [4:4] is the sub-list for method input_type + 3, // [3:4] is the sub-list for extension type_name + 2, // [2:3] is the sub-list for extension extendee + 0, // [0:2] is the sub-list for field type_name +} + +func init() { file_google_protobuf_go_features_proto_init() } +func file_google_protobuf_go_features_proto_init() { + if File_google_protobuf_go_features_proto != nil { + return + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: unsafe.Slice(unsafe.StringData(file_google_protobuf_go_features_proto_rawDesc), len(file_google_protobuf_go_features_proto_rawDesc)), + NumEnums: 2, + NumMessages: 1, + NumExtensions: 1, + NumServices: 0, + }, + GoTypes: file_google_protobuf_go_features_proto_goTypes, + DependencyIndexes: file_google_protobuf_go_features_proto_depIdxs, + EnumInfos: file_google_protobuf_go_features_proto_enumTypes, + MessageInfos: file_google_protobuf_go_features_proto_msgTypes, + ExtensionInfos: file_google_protobuf_go_features_proto_extTypes, + }.Build() + File_google_protobuf_go_features_proto = out.File + file_google_protobuf_go_features_proto_goTypes = nil + file_google_protobuf_go_features_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/protobuf/types/known/emptypb/empty.pb.go b/vendor/google.golang.org/protobuf/types/known/emptypb/empty.pb.go new file mode 100644 index 0000000000..1d7ee3b476 --- /dev/null +++ b/vendor/google.golang.org/protobuf/types/known/emptypb/empty.pb.go @@ -0,0 +1,142 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// source: google/protobuf/empty.proto + +package emptypb + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + reflect "reflect" + sync "sync" + unsafe "unsafe" +) + +// A generic empty message that you can re-use to avoid defining duplicated +// empty messages in your APIs. A typical example is to use it as the request +// or the response type of an API method. For instance: +// +// service Foo { +// rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); +// } +type Empty struct { + state protoimpl.MessageState `protogen:"open.v1"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +func (x *Empty) Reset() { + *x = Empty{} + mi := &file_google_protobuf_empty_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *Empty) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Empty) ProtoMessage() {} + +func (x *Empty) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_empty_proto_msgTypes[0] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Empty.ProtoReflect.Descriptor instead. +func (*Empty) Descriptor() ([]byte, []int) { + return file_google_protobuf_empty_proto_rawDescGZIP(), []int{0} +} + +var File_google_protobuf_empty_proto protoreflect.FileDescriptor + +const file_google_protobuf_empty_proto_rawDesc = "" + + "\n" + + "\x1bgoogle/protobuf/empty.proto\x12\x0fgoogle.protobuf\"\a\n" + + "\x05EmptyB}\n" + + "\x13com.google.protobufB\n" + + "EmptyProtoP\x01Z.google.golang.org/protobuf/types/known/emptypb\xf8\x01\x01\xa2\x02\x03GPB\xaa\x02\x1eGoogle.Protobuf.WellKnownTypesb\x06proto3" + +var ( + file_google_protobuf_empty_proto_rawDescOnce sync.Once + file_google_protobuf_empty_proto_rawDescData []byte +) + +func file_google_protobuf_empty_proto_rawDescGZIP() []byte { + file_google_protobuf_empty_proto_rawDescOnce.Do(func() { + file_google_protobuf_empty_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_google_protobuf_empty_proto_rawDesc), len(file_google_protobuf_empty_proto_rawDesc))) + }) + return file_google_protobuf_empty_proto_rawDescData +} + +var file_google_protobuf_empty_proto_msgTypes = make([]protoimpl.MessageInfo, 1) +var file_google_protobuf_empty_proto_goTypes = []any{ + (*Empty)(nil), // 0: google.protobuf.Empty +} +var file_google_protobuf_empty_proto_depIdxs = []int32{ + 0, // [0:0] is the sub-list for method output_type + 0, // [0:0] is the sub-list for method input_type + 0, // [0:0] is the sub-list for extension type_name + 0, // [0:0] is the sub-list for extension extendee + 0, // [0:0] is the sub-list for field type_name +} + +func init() { file_google_protobuf_empty_proto_init() } +func file_google_protobuf_empty_proto_init() { + if File_google_protobuf_empty_proto != nil { + return + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: unsafe.Slice(unsafe.StringData(file_google_protobuf_empty_proto_rawDesc), len(file_google_protobuf_empty_proto_rawDesc)), + NumEnums: 0, + NumMessages: 1, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_protobuf_empty_proto_goTypes, + DependencyIndexes: file_google_protobuf_empty_proto_depIdxs, + MessageInfos: file_google_protobuf_empty_proto_msgTypes, + }.Build() + File_google_protobuf_empty_proto = out.File + file_google_protobuf_empty_proto_goTypes = nil + file_google_protobuf_empty_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/protobuf/types/known/structpb/struct.pb.go b/vendor/google.golang.org/protobuf/types/known/structpb/struct.pb.go new file mode 100644 index 0000000000..30411b7283 --- /dev/null +++ b/vendor/google.golang.org/protobuf/types/known/structpb/struct.pb.go @@ -0,0 +1,767 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// source: google/protobuf/struct.proto + +// Package structpb contains generated types for google/protobuf/struct.proto. +// +// The messages (i.e., Value, Struct, and ListValue) defined in struct.proto are +// used to represent arbitrary JSON. The Value message represents a JSON value, +// the Struct message represents a JSON object, and the ListValue message +// represents a JSON array. See https://json.org for more information. +// +// The Value, Struct, and ListValue types have generated MarshalJSON and +// UnmarshalJSON methods such that they serialize JSON equivalent to what the +// messages themselves represent. Use of these types with the +// "google.golang.org/protobuf/encoding/protojson" package +// ensures that they will be serialized as their JSON equivalent. +// +// # Conversion to and from a Go interface +// +// The standard Go "encoding/json" package has functionality to serialize +// arbitrary types to a large degree. The Value.AsInterface, Struct.AsMap, and +// ListValue.AsSlice methods can convert the protobuf message representation into +// a form represented by any, map[string]any, and []any. +// This form can be used with other packages that operate on such data structures +// and also directly with the standard json package. +// +// In order to convert the any, map[string]any, and []any +// forms back as Value, Struct, and ListValue messages, use the NewStruct, +// NewList, and NewValue constructor functions. +// +// # Example usage +// +// Consider the following example JSON object: +// +// { +// "firstName": "John", +// "lastName": "Smith", +// "isAlive": true, +// "age": 27, +// "address": { +// "streetAddress": "21 2nd Street", +// "city": "New York", +// "state": "NY", +// "postalCode": "10021-3100" +// }, +// "phoneNumbers": [ +// { +// "type": "home", +// "number": "212 555-1234" +// }, +// { +// "type": "office", +// "number": "646 555-4567" +// } +// ], +// "children": [], +// "spouse": null +// } +// +// To construct a Value message representing the above JSON object: +// +// m, err := structpb.NewValue(map[string]any{ +// "firstName": "John", +// "lastName": "Smith", +// "isAlive": true, +// "age": 27, +// "address": map[string]any{ +// "streetAddress": "21 2nd Street", +// "city": "New York", +// "state": "NY", +// "postalCode": "10021-3100", +// }, +// "phoneNumbers": []any{ +// map[string]any{ +// "type": "home", +// "number": "212 555-1234", +// }, +// map[string]any{ +// "type": "office", +// "number": "646 555-4567", +// }, +// }, +// "children": []any{}, +// "spouse": nil, +// }) +// if err != nil { +// ... // handle error +// } +// ... // make use of m as a *structpb.Value +package structpb + +import ( + base64 "encoding/base64" + json "encoding/json" + protojson "google.golang.org/protobuf/encoding/protojson" + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + math "math" + reflect "reflect" + sync "sync" + utf8 "unicode/utf8" + unsafe "unsafe" +) + +// `NullValue` is a singleton enumeration to represent the null value for the +// `Value` type union. +// +// The JSON representation for `NullValue` is JSON `null`. +type NullValue int32 + +const ( + // Null value. + NullValue_NULL_VALUE NullValue = 0 +) + +// Enum value maps for NullValue. +var ( + NullValue_name = map[int32]string{ + 0: "NULL_VALUE", + } + NullValue_value = map[string]int32{ + "NULL_VALUE": 0, + } +) + +func (x NullValue) Enum() *NullValue { + p := new(NullValue) + *p = x + return p +} + +func (x NullValue) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (NullValue) Descriptor() protoreflect.EnumDescriptor { + return file_google_protobuf_struct_proto_enumTypes[0].Descriptor() +} + +func (NullValue) Type() protoreflect.EnumType { + return &file_google_protobuf_struct_proto_enumTypes[0] +} + +func (x NullValue) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use NullValue.Descriptor instead. +func (NullValue) EnumDescriptor() ([]byte, []int) { + return file_google_protobuf_struct_proto_rawDescGZIP(), []int{0} +} + +// `Struct` represents a structured data value, consisting of fields +// which map to dynamically typed values. In some languages, `Struct` +// might be supported by a native representation. For example, in +// scripting languages like JS a struct is represented as an +// object. The details of that representation are described together +// with the proto support for the language. +// +// The JSON representation for `Struct` is JSON object. +type Struct struct { + state protoimpl.MessageState `protogen:"open.v1"` + // Unordered map of dynamically typed values. + Fields map[string]*Value `protobuf:"bytes,1,rep,name=fields,proto3" json:"fields,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// NewStruct constructs a Struct from a general-purpose Go map. +// The map keys must be valid UTF-8. +// The map values are converted using NewValue. +func NewStruct(v map[string]any) (*Struct, error) { + x := &Struct{Fields: make(map[string]*Value, len(v))} + for k, v := range v { + if !utf8.ValidString(k) { + return nil, protoimpl.X.NewError("invalid UTF-8 in string: %q", k) + } + var err error + x.Fields[k], err = NewValue(v) + if err != nil { + return nil, err + } + } + return x, nil +} + +// AsMap converts x to a general-purpose Go map. +// The map values are converted by calling Value.AsInterface. +func (x *Struct) AsMap() map[string]any { + f := x.GetFields() + vs := make(map[string]any, len(f)) + for k, v := range f { + vs[k] = v.AsInterface() + } + return vs +} + +func (x *Struct) MarshalJSON() ([]byte, error) { + return protojson.Marshal(x) +} + +func (x *Struct) UnmarshalJSON(b []byte) error { + return protojson.Unmarshal(b, x) +} + +func (x *Struct) Reset() { + *x = Struct{} + mi := &file_google_protobuf_struct_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *Struct) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Struct) ProtoMessage() {} + +func (x *Struct) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_struct_proto_msgTypes[0] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Struct.ProtoReflect.Descriptor instead. +func (*Struct) Descriptor() ([]byte, []int) { + return file_google_protobuf_struct_proto_rawDescGZIP(), []int{0} +} + +func (x *Struct) GetFields() map[string]*Value { + if x != nil { + return x.Fields + } + return nil +} + +// `Value` represents a dynamically typed value which can be either +// null, a number, a string, a boolean, a recursive struct value, or a +// list of values. A producer of value is expected to set one of these +// variants. Absence of any variant indicates an error. +// +// The JSON representation for `Value` is JSON value. +type Value struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The kind of value. + // + // Types that are valid to be assigned to Kind: + // + // *Value_NullValue + // *Value_NumberValue + // *Value_StringValue + // *Value_BoolValue + // *Value_StructValue + // *Value_ListValue + Kind isValue_Kind `protobuf_oneof:"kind"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// NewValue constructs a Value from a general-purpose Go interface. +// +// ╔═══════════════════════════════════════╤════════════════════════════════════════════╗ +// ║ Go type │ Conversion ║ +// ╠═══════════════════════════════════════╪════════════════════════════════════════════╣ +// ║ nil │ stored as NullValue ║ +// ║ bool │ stored as BoolValue ║ +// ║ int, int8, int16, int32, int64 │ stored as NumberValue ║ +// ║ uint, uint8, uint16, uint32, uint64 │ stored as NumberValue ║ +// ║ float32, float64 │ stored as NumberValue ║ +// ║ json.Number │ stored as NumberValue ║ +// ║ string │ stored as StringValue; must be valid UTF-8 ║ +// ║ []byte │ stored as StringValue; base64-encoded ║ +// ║ map[string]any │ stored as StructValue ║ +// ║ []any │ stored as ListValue ║ +// ╚═══════════════════════════════════════╧════════════════════════════════════════════╝ +// +// When converting an int64 or uint64 to a NumberValue, numeric precision loss +// is possible since they are stored as a float64. +func NewValue(v any) (*Value, error) { + switch v := v.(type) { + case nil: + return NewNullValue(), nil + case bool: + return NewBoolValue(v), nil + case int: + return NewNumberValue(float64(v)), nil + case int8: + return NewNumberValue(float64(v)), nil + case int16: + return NewNumberValue(float64(v)), nil + case int32: + return NewNumberValue(float64(v)), nil + case int64: + return NewNumberValue(float64(v)), nil + case uint: + return NewNumberValue(float64(v)), nil + case uint8: + return NewNumberValue(float64(v)), nil + case uint16: + return NewNumberValue(float64(v)), nil + case uint32: + return NewNumberValue(float64(v)), nil + case uint64: + return NewNumberValue(float64(v)), nil + case float32: + return NewNumberValue(float64(v)), nil + case float64: + return NewNumberValue(float64(v)), nil + case json.Number: + n, err := v.Float64() + if err != nil { + return nil, protoimpl.X.NewError("invalid number format %q, expected a float64: %v", v, err) + } + return NewNumberValue(n), nil + case string: + if !utf8.ValidString(v) { + return nil, protoimpl.X.NewError("invalid UTF-8 in string: %q", v) + } + return NewStringValue(v), nil + case []byte: + s := base64.StdEncoding.EncodeToString(v) + return NewStringValue(s), nil + case map[string]any: + v2, err := NewStruct(v) + if err != nil { + return nil, err + } + return NewStructValue(v2), nil + case []any: + v2, err := NewList(v) + if err != nil { + return nil, err + } + return NewListValue(v2), nil + default: + return nil, protoimpl.X.NewError("invalid type: %T", v) + } +} + +// NewNullValue constructs a new null Value. +func NewNullValue() *Value { + return &Value{Kind: &Value_NullValue{NullValue: NullValue_NULL_VALUE}} +} + +// NewBoolValue constructs a new boolean Value. +func NewBoolValue(v bool) *Value { + return &Value{Kind: &Value_BoolValue{BoolValue: v}} +} + +// NewNumberValue constructs a new number Value. +func NewNumberValue(v float64) *Value { + return &Value{Kind: &Value_NumberValue{NumberValue: v}} +} + +// NewStringValue constructs a new string Value. +func NewStringValue(v string) *Value { + return &Value{Kind: &Value_StringValue{StringValue: v}} +} + +// NewStructValue constructs a new struct Value. +func NewStructValue(v *Struct) *Value { + return &Value{Kind: &Value_StructValue{StructValue: v}} +} + +// NewListValue constructs a new list Value. +func NewListValue(v *ListValue) *Value { + return &Value{Kind: &Value_ListValue{ListValue: v}} +} + +// AsInterface converts x to a general-purpose Go interface. +// +// Calling Value.MarshalJSON and "encoding/json".Marshal on this output produce +// semantically equivalent JSON (assuming no errors occur). +// +// Floating-point values (i.e., "NaN", "Infinity", and "-Infinity") are +// converted as strings to remain compatible with MarshalJSON. +func (x *Value) AsInterface() any { + switch v := x.GetKind().(type) { + case *Value_NumberValue: + if v != nil { + switch { + case math.IsNaN(v.NumberValue): + return "NaN" + case math.IsInf(v.NumberValue, +1): + return "Infinity" + case math.IsInf(v.NumberValue, -1): + return "-Infinity" + default: + return v.NumberValue + } + } + case *Value_StringValue: + if v != nil { + return v.StringValue + } + case *Value_BoolValue: + if v != nil { + return v.BoolValue + } + case *Value_StructValue: + if v != nil { + return v.StructValue.AsMap() + } + case *Value_ListValue: + if v != nil { + return v.ListValue.AsSlice() + } + } + return nil +} + +func (x *Value) MarshalJSON() ([]byte, error) { + return protojson.Marshal(x) +} + +func (x *Value) UnmarshalJSON(b []byte) error { + return protojson.Unmarshal(b, x) +} + +func (x *Value) Reset() { + *x = Value{} + mi := &file_google_protobuf_struct_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Value) ProtoMessage() {} + +func (x *Value) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_struct_proto_msgTypes[1] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Value.ProtoReflect.Descriptor instead. +func (*Value) Descriptor() ([]byte, []int) { + return file_google_protobuf_struct_proto_rawDescGZIP(), []int{1} +} + +func (x *Value) GetKind() isValue_Kind { + if x != nil { + return x.Kind + } + return nil +} + +func (x *Value) GetNullValue() NullValue { + if x != nil { + if x, ok := x.Kind.(*Value_NullValue); ok { + return x.NullValue + } + } + return NullValue_NULL_VALUE +} + +func (x *Value) GetNumberValue() float64 { + if x != nil { + if x, ok := x.Kind.(*Value_NumberValue); ok { + return x.NumberValue + } + } + return 0 +} + +func (x *Value) GetStringValue() string { + if x != nil { + if x, ok := x.Kind.(*Value_StringValue); ok { + return x.StringValue + } + } + return "" +} + +func (x *Value) GetBoolValue() bool { + if x != nil { + if x, ok := x.Kind.(*Value_BoolValue); ok { + return x.BoolValue + } + } + return false +} + +func (x *Value) GetStructValue() *Struct { + if x != nil { + if x, ok := x.Kind.(*Value_StructValue); ok { + return x.StructValue + } + } + return nil +} + +func (x *Value) GetListValue() *ListValue { + if x != nil { + if x, ok := x.Kind.(*Value_ListValue); ok { + return x.ListValue + } + } + return nil +} + +type isValue_Kind interface { + isValue_Kind() +} + +type Value_NullValue struct { + // Represents a null value. + NullValue NullValue `protobuf:"varint,1,opt,name=null_value,json=nullValue,proto3,enum=google.protobuf.NullValue,oneof"` +} + +type Value_NumberValue struct { + // Represents a double value. + NumberValue float64 `protobuf:"fixed64,2,opt,name=number_value,json=numberValue,proto3,oneof"` +} + +type Value_StringValue struct { + // Represents a string value. + StringValue string `protobuf:"bytes,3,opt,name=string_value,json=stringValue,proto3,oneof"` +} + +type Value_BoolValue struct { + // Represents a boolean value. + BoolValue bool `protobuf:"varint,4,opt,name=bool_value,json=boolValue,proto3,oneof"` +} + +type Value_StructValue struct { + // Represents a structured value. + StructValue *Struct `protobuf:"bytes,5,opt,name=struct_value,json=structValue,proto3,oneof"` +} + +type Value_ListValue struct { + // Represents a repeated `Value`. + ListValue *ListValue `protobuf:"bytes,6,opt,name=list_value,json=listValue,proto3,oneof"` +} + +func (*Value_NullValue) isValue_Kind() {} + +func (*Value_NumberValue) isValue_Kind() {} + +func (*Value_StringValue) isValue_Kind() {} + +func (*Value_BoolValue) isValue_Kind() {} + +func (*Value_StructValue) isValue_Kind() {} + +func (*Value_ListValue) isValue_Kind() {} + +// `ListValue` is a wrapper around a repeated field of values. +// +// The JSON representation for `ListValue` is JSON array. +type ListValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // Repeated field of dynamically typed values. + Values []*Value `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// NewList constructs a ListValue from a general-purpose Go slice. +// The slice elements are converted using NewValue. +func NewList(v []any) (*ListValue, error) { + x := &ListValue{Values: make([]*Value, len(v))} + for i, v := range v { + var err error + x.Values[i], err = NewValue(v) + if err != nil { + return nil, err + } + } + return x, nil +} + +// AsSlice converts x to a general-purpose Go slice. +// The slice elements are converted by calling Value.AsInterface. +func (x *ListValue) AsSlice() []any { + vals := x.GetValues() + vs := make([]any, len(vals)) + for i, v := range vals { + vs[i] = v.AsInterface() + } + return vs +} + +func (x *ListValue) MarshalJSON() ([]byte, error) { + return protojson.Marshal(x) +} + +func (x *ListValue) UnmarshalJSON(b []byte) error { + return protojson.Unmarshal(b, x) +} + +func (x *ListValue) Reset() { + *x = ListValue{} + mi := &file_google_protobuf_struct_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *ListValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ListValue) ProtoMessage() {} + +func (x *ListValue) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_struct_proto_msgTypes[2] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ListValue.ProtoReflect.Descriptor instead. +func (*ListValue) Descriptor() ([]byte, []int) { + return file_google_protobuf_struct_proto_rawDescGZIP(), []int{2} +} + +func (x *ListValue) GetValues() []*Value { + if x != nil { + return x.Values + } + return nil +} + +var File_google_protobuf_struct_proto protoreflect.FileDescriptor + +const file_google_protobuf_struct_proto_rawDesc = "" + + "\n" + + "\x1cgoogle/protobuf/struct.proto\x12\x0fgoogle.protobuf\"\x98\x01\n" + + "\x06Struct\x12;\n" + + "\x06fields\x18\x01 \x03(\v2#.google.protobuf.Struct.FieldsEntryR\x06fields\x1aQ\n" + + "\vFieldsEntry\x12\x10\n" + + "\x03key\x18\x01 \x01(\tR\x03key\x12,\n" + + "\x05value\x18\x02 \x01(\v2\x16.google.protobuf.ValueR\x05value:\x028\x01\"\xb2\x02\n" + + "\x05Value\x12;\n" + + "\n" + + "null_value\x18\x01 \x01(\x0e2\x1a.google.protobuf.NullValueH\x00R\tnullValue\x12#\n" + + "\fnumber_value\x18\x02 \x01(\x01H\x00R\vnumberValue\x12#\n" + + "\fstring_value\x18\x03 \x01(\tH\x00R\vstringValue\x12\x1f\n" + + "\n" + + "bool_value\x18\x04 \x01(\bH\x00R\tboolValue\x12<\n" + + "\fstruct_value\x18\x05 \x01(\v2\x17.google.protobuf.StructH\x00R\vstructValue\x12;\n" + + "\n" + + "list_value\x18\x06 \x01(\v2\x1a.google.protobuf.ListValueH\x00R\tlistValueB\x06\n" + + "\x04kind\";\n" + + "\tListValue\x12.\n" + + "\x06values\x18\x01 \x03(\v2\x16.google.protobuf.ValueR\x06values*\x1b\n" + + "\tNullValue\x12\x0e\n" + + "\n" + + "NULL_VALUE\x10\x00B\x7f\n" + + "\x13com.google.protobufB\vStructProtoP\x01Z/google.golang.org/protobuf/types/known/structpb\xf8\x01\x01\xa2\x02\x03GPB\xaa\x02\x1eGoogle.Protobuf.WellKnownTypesb\x06proto3" + +var ( + file_google_protobuf_struct_proto_rawDescOnce sync.Once + file_google_protobuf_struct_proto_rawDescData []byte +) + +func file_google_protobuf_struct_proto_rawDescGZIP() []byte { + file_google_protobuf_struct_proto_rawDescOnce.Do(func() { + file_google_protobuf_struct_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_google_protobuf_struct_proto_rawDesc), len(file_google_protobuf_struct_proto_rawDesc))) + }) + return file_google_protobuf_struct_proto_rawDescData +} + +var file_google_protobuf_struct_proto_enumTypes = make([]protoimpl.EnumInfo, 1) +var file_google_protobuf_struct_proto_msgTypes = make([]protoimpl.MessageInfo, 4) +var file_google_protobuf_struct_proto_goTypes = []any{ + (NullValue)(0), // 0: google.protobuf.NullValue + (*Struct)(nil), // 1: google.protobuf.Struct + (*Value)(nil), // 2: google.protobuf.Value + (*ListValue)(nil), // 3: google.protobuf.ListValue + nil, // 4: google.protobuf.Struct.FieldsEntry +} +var file_google_protobuf_struct_proto_depIdxs = []int32{ + 4, // 0: google.protobuf.Struct.fields:type_name -> google.protobuf.Struct.FieldsEntry + 0, // 1: google.protobuf.Value.null_value:type_name -> google.protobuf.NullValue + 1, // 2: google.protobuf.Value.struct_value:type_name -> google.protobuf.Struct + 3, // 3: google.protobuf.Value.list_value:type_name -> google.protobuf.ListValue + 2, // 4: google.protobuf.ListValue.values:type_name -> google.protobuf.Value + 2, // 5: google.protobuf.Struct.FieldsEntry.value:type_name -> google.protobuf.Value + 6, // [6:6] is the sub-list for method output_type + 6, // [6:6] is the sub-list for method input_type + 6, // [6:6] is the sub-list for extension type_name + 6, // [6:6] is the sub-list for extension extendee + 0, // [0:6] is the sub-list for field type_name +} + +func init() { file_google_protobuf_struct_proto_init() } +func file_google_protobuf_struct_proto_init() { + if File_google_protobuf_struct_proto != nil { + return + } + file_google_protobuf_struct_proto_msgTypes[1].OneofWrappers = []any{ + (*Value_NullValue)(nil), + (*Value_NumberValue)(nil), + (*Value_StringValue)(nil), + (*Value_BoolValue)(nil), + (*Value_StructValue)(nil), + (*Value_ListValue)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: unsafe.Slice(unsafe.StringData(file_google_protobuf_struct_proto_rawDesc), len(file_google_protobuf_struct_proto_rawDesc)), + NumEnums: 1, + NumMessages: 4, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_protobuf_struct_proto_goTypes, + DependencyIndexes: file_google_protobuf_struct_proto_depIdxs, + EnumInfos: file_google_protobuf_struct_proto_enumTypes, + MessageInfos: file_google_protobuf_struct_proto_msgTypes, + }.Build() + File_google_protobuf_struct_proto = out.File + file_google_protobuf_struct_proto_goTypes = nil + file_google_protobuf_struct_proto_depIdxs = nil +} diff --git a/vendor/google.golang.org/protobuf/types/known/wrapperspb/wrappers.pb.go b/vendor/google.golang.org/protobuf/types/known/wrapperspb/wrappers.pb.go new file mode 100644 index 0000000000..b7c2d0607d --- /dev/null +++ b/vendor/google.golang.org/protobuf/types/known/wrapperspb/wrappers.pb.go @@ -0,0 +1,648 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// Wrappers for primitive (non-message) types. These types were needed +// for legacy reasons and are not recommended for use in new APIs. +// +// Historically these wrappers were useful to have presence on proto3 primitive +// fields, but proto3 syntax has been updated to support the `optional` keyword. +// Using that keyword is now the strongly preferred way to add presence to +// proto3 primitive fields. +// +// A secondary usecase was to embed primitives in the `google.protobuf.Any` +// type: it is now recommended that you embed your value in your own wrapper +// message which can be specifically documented. +// +// These wrappers have no meaningful use within repeated fields as they lack +// the ability to detect presence on individual elements. +// These wrappers have no meaningful use within a map or a oneof since +// individual entries of a map or fields of a oneof can already detect presence. + +// Code generated by protoc-gen-go. DO NOT EDIT. +// source: google/protobuf/wrappers.proto + +package wrapperspb + +import ( + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + reflect "reflect" + sync "sync" + unsafe "unsafe" +) + +// Wrapper message for `double`. +// +// The JSON representation for `DoubleValue` is JSON number. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type DoubleValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The double value. + Value float64 `protobuf:"fixed64,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// Double stores v in a new DoubleValue and returns a pointer to it. +func Double(v float64) *DoubleValue { + return &DoubleValue{Value: v} +} + +func (x *DoubleValue) Reset() { + *x = DoubleValue{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *DoubleValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*DoubleValue) ProtoMessage() {} + +func (x *DoubleValue) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[0] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use DoubleValue.ProtoReflect.Descriptor instead. +func (*DoubleValue) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{0} +} + +func (x *DoubleValue) GetValue() float64 { + if x != nil { + return x.Value + } + return 0 +} + +// Wrapper message for `float`. +// +// The JSON representation for `FloatValue` is JSON number. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type FloatValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The float value. + Value float32 `protobuf:"fixed32,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// Float stores v in a new FloatValue and returns a pointer to it. +func Float(v float32) *FloatValue { + return &FloatValue{Value: v} +} + +func (x *FloatValue) Reset() { + *x = FloatValue{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *FloatValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*FloatValue) ProtoMessage() {} + +func (x *FloatValue) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[1] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use FloatValue.ProtoReflect.Descriptor instead. +func (*FloatValue) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{1} +} + +func (x *FloatValue) GetValue() float32 { + if x != nil { + return x.Value + } + return 0 +} + +// Wrapper message for `int64`. +// +// The JSON representation for `Int64Value` is JSON string. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type Int64Value struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The int64 value. + Value int64 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// Int64 stores v in a new Int64Value and returns a pointer to it. +func Int64(v int64) *Int64Value { + return &Int64Value{Value: v} +} + +func (x *Int64Value) Reset() { + *x = Int64Value{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *Int64Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Int64Value) ProtoMessage() {} + +func (x *Int64Value) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[2] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Int64Value.ProtoReflect.Descriptor instead. +func (*Int64Value) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{2} +} + +func (x *Int64Value) GetValue() int64 { + if x != nil { + return x.Value + } + return 0 +} + +// Wrapper message for `uint64`. +// +// The JSON representation for `UInt64Value` is JSON string. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type UInt64Value struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The uint64 value. + Value uint64 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// UInt64 stores v in a new UInt64Value and returns a pointer to it. +func UInt64(v uint64) *UInt64Value { + return &UInt64Value{Value: v} +} + +func (x *UInt64Value) Reset() { + *x = UInt64Value{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *UInt64Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*UInt64Value) ProtoMessage() {} + +func (x *UInt64Value) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[3] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use UInt64Value.ProtoReflect.Descriptor instead. +func (*UInt64Value) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{3} +} + +func (x *UInt64Value) GetValue() uint64 { + if x != nil { + return x.Value + } + return 0 +} + +// Wrapper message for `int32`. +// +// The JSON representation for `Int32Value` is JSON number. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type Int32Value struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The int32 value. + Value int32 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// Int32 stores v in a new Int32Value and returns a pointer to it. +func Int32(v int32) *Int32Value { + return &Int32Value{Value: v} +} + +func (x *Int32Value) Reset() { + *x = Int32Value{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *Int32Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Int32Value) ProtoMessage() {} + +func (x *Int32Value) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[4] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Int32Value.ProtoReflect.Descriptor instead. +func (*Int32Value) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{4} +} + +func (x *Int32Value) GetValue() int32 { + if x != nil { + return x.Value + } + return 0 +} + +// Wrapper message for `uint32`. +// +// The JSON representation for `UInt32Value` is JSON number. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type UInt32Value struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The uint32 value. + Value uint32 `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// UInt32 stores v in a new UInt32Value and returns a pointer to it. +func UInt32(v uint32) *UInt32Value { + return &UInt32Value{Value: v} +} + +func (x *UInt32Value) Reset() { + *x = UInt32Value{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[5] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *UInt32Value) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*UInt32Value) ProtoMessage() {} + +func (x *UInt32Value) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[5] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use UInt32Value.ProtoReflect.Descriptor instead. +func (*UInt32Value) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{5} +} + +func (x *UInt32Value) GetValue() uint32 { + if x != nil { + return x.Value + } + return 0 +} + +// Wrapper message for `bool`. +// +// The JSON representation for `BoolValue` is JSON `true` and `false`. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type BoolValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The bool value. + Value bool `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// Bool stores v in a new BoolValue and returns a pointer to it. +func Bool(v bool) *BoolValue { + return &BoolValue{Value: v} +} + +func (x *BoolValue) Reset() { + *x = BoolValue{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[6] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *BoolValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*BoolValue) ProtoMessage() {} + +func (x *BoolValue) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[6] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use BoolValue.ProtoReflect.Descriptor instead. +func (*BoolValue) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{6} +} + +func (x *BoolValue) GetValue() bool { + if x != nil { + return x.Value + } + return false +} + +// Wrapper message for `string`. +// +// The JSON representation for `StringValue` is JSON string. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type StringValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The string value. + Value string `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// String stores v in a new StringValue and returns a pointer to it. +func String(v string) *StringValue { + return &StringValue{Value: v} +} + +func (x *StringValue) Reset() { + *x = StringValue{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[7] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *StringValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*StringValue) ProtoMessage() {} + +func (x *StringValue) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[7] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use StringValue.ProtoReflect.Descriptor instead. +func (*StringValue) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{7} +} + +func (x *StringValue) GetValue() string { + if x != nil { + return x.Value + } + return "" +} + +// Wrapper message for `bytes`. +// +// The JSON representation for `BytesValue` is JSON string. +// +// Not recommended for use in new APIs, but still useful for legacy APIs and +// has no plan to be removed. +type BytesValue struct { + state protoimpl.MessageState `protogen:"open.v1"` + // The bytes value. + Value []byte `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"` + unknownFields protoimpl.UnknownFields + sizeCache protoimpl.SizeCache +} + +// Bytes stores v in a new BytesValue and returns a pointer to it. +func Bytes(v []byte) *BytesValue { + return &BytesValue{Value: v} +} + +func (x *BytesValue) Reset() { + *x = BytesValue{} + mi := &file_google_protobuf_wrappers_proto_msgTypes[8] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) +} + +func (x *BytesValue) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*BytesValue) ProtoMessage() {} + +func (x *BytesValue) ProtoReflect() protoreflect.Message { + mi := &file_google_protobuf_wrappers_proto_msgTypes[8] + if x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use BytesValue.ProtoReflect.Descriptor instead. +func (*BytesValue) Descriptor() ([]byte, []int) { + return file_google_protobuf_wrappers_proto_rawDescGZIP(), []int{8} +} + +func (x *BytesValue) GetValue() []byte { + if x != nil { + return x.Value + } + return nil +} + +var File_google_protobuf_wrappers_proto protoreflect.FileDescriptor + +const file_google_protobuf_wrappers_proto_rawDesc = "" + + "\n" + + "\x1egoogle/protobuf/wrappers.proto\x12\x0fgoogle.protobuf\"#\n" + + "\vDoubleValue\x12\x14\n" + + "\x05value\x18\x01 \x01(\x01R\x05value\"\"\n" + + "\n" + + "FloatValue\x12\x14\n" + + "\x05value\x18\x01 \x01(\x02R\x05value\"\"\n" + + "\n" + + "Int64Value\x12\x14\n" + + "\x05value\x18\x01 \x01(\x03R\x05value\"#\n" + + "\vUInt64Value\x12\x14\n" + + "\x05value\x18\x01 \x01(\x04R\x05value\"\"\n" + + "\n" + + "Int32Value\x12\x14\n" + + "\x05value\x18\x01 \x01(\x05R\x05value\"#\n" + + "\vUInt32Value\x12\x14\n" + + "\x05value\x18\x01 \x01(\rR\x05value\"!\n" + + "\tBoolValue\x12\x14\n" + + "\x05value\x18\x01 \x01(\bR\x05value\"#\n" + + "\vStringValue\x12\x14\n" + + "\x05value\x18\x01 \x01(\tR\x05value\"\"\n" + + "\n" + + "BytesValue\x12\x14\n" + + "\x05value\x18\x01 \x01(\fR\x05valueB\x83\x01\n" + + "\x13com.google.protobufB\rWrappersProtoP\x01Z1google.golang.org/protobuf/types/known/wrapperspb\xf8\x01\x01\xa2\x02\x03GPB\xaa\x02\x1eGoogle.Protobuf.WellKnownTypesb\x06proto3" + +var ( + file_google_protobuf_wrappers_proto_rawDescOnce sync.Once + file_google_protobuf_wrappers_proto_rawDescData []byte +) + +func file_google_protobuf_wrappers_proto_rawDescGZIP() []byte { + file_google_protobuf_wrappers_proto_rawDescOnce.Do(func() { + file_google_protobuf_wrappers_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_google_protobuf_wrappers_proto_rawDesc), len(file_google_protobuf_wrappers_proto_rawDesc))) + }) + return file_google_protobuf_wrappers_proto_rawDescData +} + +var file_google_protobuf_wrappers_proto_msgTypes = make([]protoimpl.MessageInfo, 9) +var file_google_protobuf_wrappers_proto_goTypes = []any{ + (*DoubleValue)(nil), // 0: google.protobuf.DoubleValue + (*FloatValue)(nil), // 1: google.protobuf.FloatValue + (*Int64Value)(nil), // 2: google.protobuf.Int64Value + (*UInt64Value)(nil), // 3: google.protobuf.UInt64Value + (*Int32Value)(nil), // 4: google.protobuf.Int32Value + (*UInt32Value)(nil), // 5: google.protobuf.UInt32Value + (*BoolValue)(nil), // 6: google.protobuf.BoolValue + (*StringValue)(nil), // 7: google.protobuf.StringValue + (*BytesValue)(nil), // 8: google.protobuf.BytesValue +} +var file_google_protobuf_wrappers_proto_depIdxs = []int32{ + 0, // [0:0] is the sub-list for method output_type + 0, // [0:0] is the sub-list for method input_type + 0, // [0:0] is the sub-list for extension type_name + 0, // [0:0] is the sub-list for extension extendee + 0, // [0:0] is the sub-list for field type_name +} + +func init() { file_google_protobuf_wrappers_proto_init() } +func file_google_protobuf_wrappers_proto_init() { + if File_google_protobuf_wrappers_proto != nil { + return + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: unsafe.Slice(unsafe.StringData(file_google_protobuf_wrappers_proto_rawDesc), len(file_google_protobuf_wrappers_proto_rawDesc)), + NumEnums: 0, + NumMessages: 9, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_google_protobuf_wrappers_proto_goTypes, + DependencyIndexes: file_google_protobuf_wrappers_proto_depIdxs, + MessageInfos: file_google_protobuf_wrappers_proto_msgTypes, + }.Build() + File_google_protobuf_wrappers_proto = out.File + file_google_protobuf_wrappers_proto_goTypes = nil + file_google_protobuf_wrappers_proto_depIdxs = nil +} diff --git a/vendor/modules.txt b/vendor/modules.txt index 33b1ea6b9f..05da9509ad 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -1,6 +1,9 @@ # al.essio.dev/pkg/shellescape v1.6.0 ## explicit; go 1.18 al.essio.dev/pkg/shellescape +# cel.dev/expr v0.24.0 +## explicit; go 1.22.0 +cel.dev/expr # github.com/AaronO/go-git-http v0.0.0-20161214145340-1d9485b3a98f ## explicit github.com/AaronO/go-git-http @@ -39,6 +42,9 @@ github.com/alexbrainman/sspi/negotiate github.com/alicebob/sqlittle github.com/alicebob/sqlittle/db github.com/alicebob/sqlittle/sql +# github.com/antlr4-go/antlr/v4 v4.13.0 +## explicit; go 1.20 +github.com/antlr4-go/antlr/v4 # github.com/apcera/gssapi v0.0.0-00010101000000-000000000000 => github.com/openshift/gssapi v0.0.0-20161010215902-5fb4217df13b ## explicit github.com/apcera/gssapi @@ -465,6 +471,29 @@ github.com/gonum/matrix/mat64 # github.com/google/btree v1.1.3 ## explicit; go 1.18 github.com/google/btree +# github.com/google/cel-go v0.26.0 +## explicit; go 1.22.0 +github.com/google/cel-go/cel +github.com/google/cel-go/checker +github.com/google/cel-go/checker/decls +github.com/google/cel-go/common +github.com/google/cel-go/common/ast +github.com/google/cel-go/common/containers +github.com/google/cel-go/common/debug +github.com/google/cel-go/common/decls +github.com/google/cel-go/common/env +github.com/google/cel-go/common/functions +github.com/google/cel-go/common/operators +github.com/google/cel-go/common/overloads +github.com/google/cel-go/common/runes +github.com/google/cel-go/common/stdlib +github.com/google/cel-go/common/types +github.com/google/cel-go/common/types/pb +github.com/google/cel-go/common/types/ref +github.com/google/cel-go/common/types/traits +github.com/google/cel-go/interpreter +github.com/google/cel-go/parser +github.com/google/cel-go/parser/gen # github.com/google/gnostic-models v0.7.0 ## explicit; go 1.22 github.com/google/gnostic-models/compiler @@ -629,6 +658,21 @@ github.com/opencontainers/runtime-spec/specs-go ## explicit; go 1.19 github.com/opencontainers/selinux/go-selinux github.com/opencontainers/selinux/pkg/pwalkdir +# github.com/openshift-eng/openshift-tests-extension v0.0.0-20251125140340-13f4631a80b0 +## explicit; go 1.23.0 +github.com/openshift-eng/openshift-tests-extension/pkg/cmd +github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdimages +github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdinfo +github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdlist +github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdrun +github.com/openshift-eng/openshift-tests-extension/pkg/cmd/cmdupdate +github.com/openshift-eng/openshift-tests-extension/pkg/dbtime +github.com/openshift-eng/openshift-tests-extension/pkg/extension +github.com/openshift-eng/openshift-tests-extension/pkg/extension/extensiontests +github.com/openshift-eng/openshift-tests-extension/pkg/flags +github.com/openshift-eng/openshift-tests-extension/pkg/junit +github.com/openshift-eng/openshift-tests-extension/pkg/util/sets +github.com/openshift-eng/openshift-tests-extension/pkg/version # github.com/openshift/api v0.0.0-20251020135558-286504b695bc ## explicit; go 1.24.0 github.com/openshift/api @@ -965,6 +1009,9 @@ github.com/spf13/cobra # github.com/spf13/pflag v1.0.10 ## explicit; go 1.12 github.com/spf13/pflag +# github.com/stoewer/go-strcase v1.3.0 +## explicit; go 1.11 +github.com/stoewer/go-strcase # github.com/stretchr/testify v1.11.1 ## explicit; go 1.17 github.com/stretchr/testify/assert @@ -1029,8 +1076,10 @@ golang.org/x/crypto/scrypt golang.org/x/crypto/sha3 # golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 ## explicit; go 1.20 +golang.org/x/exp/constraints golang.org/x/exp/maps golang.org/x/exp/mmap +golang.org/x/exp/slices # golang.org/x/net v0.46.0 ## explicit; go 1.24.0 golang.org/x/net/context @@ -1078,16 +1127,25 @@ golang.org/x/time/rate # golang.org/x/tools v0.37.0 ## explicit; go 1.24.0 golang.org/x/tools/container/intsets +# google.golang.org/genproto/googleapis/api v0.0.0-20250303144028-a0af3efb3deb +## explicit; go 1.23.0 +google.golang.org/genproto/googleapis/api/expr/v1alpha1 +# google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb +## explicit; go 1.23.0 +google.golang.org/genproto/googleapis/rpc/status # google.golang.org/protobuf v1.36.8 ## explicit; go 1.23 google.golang.org/protobuf/encoding/protodelim +google.golang.org/protobuf/encoding/protojson google.golang.org/protobuf/encoding/prototext google.golang.org/protobuf/encoding/protowire google.golang.org/protobuf/internal/descfmt google.golang.org/protobuf/internal/descopts google.golang.org/protobuf/internal/detrand google.golang.org/protobuf/internal/editiondefaults +google.golang.org/protobuf/internal/editionssupport google.golang.org/protobuf/internal/encoding/defval +google.golang.org/protobuf/internal/encoding/json google.golang.org/protobuf/internal/encoding/messageset google.golang.org/protobuf/internal/encoding/tag google.golang.org/protobuf/internal/encoding/text @@ -1104,14 +1162,20 @@ google.golang.org/protobuf/internal/set google.golang.org/protobuf/internal/strs google.golang.org/protobuf/internal/version google.golang.org/protobuf/proto +google.golang.org/protobuf/reflect/protodesc google.golang.org/protobuf/reflect/protoreflect google.golang.org/protobuf/reflect/protoregistry google.golang.org/protobuf/runtime/protoiface google.golang.org/protobuf/runtime/protoimpl google.golang.org/protobuf/types/descriptorpb +google.golang.org/protobuf/types/dynamicpb +google.golang.org/protobuf/types/gofeaturespb google.golang.org/protobuf/types/known/anypb google.golang.org/protobuf/types/known/durationpb +google.golang.org/protobuf/types/known/emptypb +google.golang.org/protobuf/types/known/structpb google.golang.org/protobuf/types/known/timestamppb +google.golang.org/protobuf/types/known/wrapperspb # gopkg.in/evanphx/json-patch.v4 v4.12.0 ## explicit gopkg.in/evanphx/json-patch.v4