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add JSONText methods for Symbol and JSONText #427

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add JSONText methods for Symbol and JSONText #427

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2 changes: 2 additions & 0 deletions src/JSON.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ x = JSON.parse("[1,2,3]", JSONText)
struct JSONText
value::String
end
JSON.JSONText(js::Symbol) = JSONText(String(js))
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@quinnj quinnj Jan 30, 2026

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This definition feels really weird/unnecessary to me (who has valid json as a symbol?). I think I'd prefer to not support for now. I think the other definition is fine.

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@hhaensel hhaensel Jan 30, 2026 •
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I've written a Julia to JS expression conversion where I use Symbols to mean js variables, e.g.

julia> @jsexpr(:x^2 + :b * :y + 2)
JSExpr("(((x ** 2) + (b * y)) + 2)")

In this context it comes in very handy to automatically convert Symbols to JSONText.

JSON.JSONText(js::JSONText) = js

include("lazy.jl")
include("parse.jl")
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4 changes: 3 additions & 1 deletion test/json.jl
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Expand Up @@ -107,7 +107,7 @@ end
arr[3] = "b"
@test JSON.json(arr) == "[\"a\",null,\"b\"]"
# test custom struct writing
# defined in the test/struct.jl file
# defined in the test/parse.jl file
a = A(1, 2, 3, 4)
@test JSON.json(a) == "{\"a\":1,\"b\":2,\"c\":3,\"d\":4}"
x = LotsOfFields("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35")
Expand Down Expand Up @@ -256,6 +256,8 @@ end
@test JSON.json(Dict(Point(1, 2) => "hi")) == "{\"1_2\":\"hi\"}"
x = JSONText("[1,2,3]")
@test JSON.json(x) == "[1,2,3]"
@test JSONText(x) == x
@test x == JSONText(Symbol("[1,2,3]"))
@test JSON.json((a=1, b=nothing)) == "{\"a\":1,\"b\":null}"
@test JSON.json((a=1, b=nothing); omit_null=true) == "{\"a\":1}"
@test JSON.json((a=1, b=nothing); omit_null=false) == "{\"a\":1,\"b\":null}"
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