Rename lifetime from 'gen to 'gen_ #3
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
gen has become a keyword in Rust 2024; code produced by fauxgen's macro uses 'gen as a lifetime name, which leads to breakage in Rust 2024 use-sites. So, rename to something else - suffixing with an underscore suffices and, while a little ugly, using these lifetimes is likely to be the rare case anyway. This is a breaking change (as shown by tests/nested.rs needing adaptation). Keeping the name as-is and instead using raw identifier syntax (new in Rust 2021) was an option, but introduces complications of its own: one, AIUI it would break usage in earlier editions and so still be a breaking change; two, the tests break and I'm not sure why (trybuild not using the right edition?); three, the syntax is ugly and uglier than a trailing underscore - long-term, the latter's the way to go. I wasn't able to work out how best to test this (specifically, how to get trybuild to use a specific edition).
sepointon
force-pushed
the
push-vxsvswknoplt
branch
from
feb6a31 to
717e5e7
Compare
|
@sepointon Using They are even supported by |
|
Implemented in #5 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
gen has become a keyword in Rust 2024; code produced by fauxgen's macro uses 'gen as a lifetime name, which leads to breakage in Rust 2024 use-sites. So, rename to something else - suffixing with an underscore suffices and, while a little ugly, using these lifetimes is likely to be the rare case anyway.
This is a breaking change (as shown by tests/nested.rs needing adaptation).
Keeping the name as-is and instead using raw identifier syntax (new in Rust 2021) was an option, but introduces complications of its own: one, AIUI it would break usage in earlier editions and so still be a breaking change; two, the tests break and I'm not sure why (trybuild not using the right edition?); three, the syntax is ugly and uglier than a trailing underscore - long-term, the latter's the way to go.
I wasn't able to work out how best to test this (specifically, how to get trybuild to use a specific edition).