feat(ast_codegen): add #[visit(enter_before)] hint.

[rzvxa]

Closes #4142

I can split it into 2 PRs but it seems pointless. Let me know if you guys disagree with me.

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[rzvxa]

• feat(ast_codegen): add #[visit(enter_before)] hint. #4147 👈
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[codspeed-hq]

CodSpeed Performance Report

Merging #4147 will not alter performance

_{Comparing 07-09-fix_ast_ast_codegen_visit_decorators_in_class_before_node_events (3ba7cfe) with main (725571a)}

Summary

✅ 29 untouched benchmarks

[overlookmotel]

Please see #4142 (comment). I'm not clear why this change is required.

[rzvxa]

Please see #4142 (comment). I'm not clear why this change is required.

I just saw your comment, Even with that it is a good thing to have the visit(enter_before) marker just in case we need it in the future. I can just remove the marker from Class and merge the generator code.

[Boshen]

@Dunqing do you know about the semantic details here?

[Dunqing]

@Dunqing do you know about the semantic details here?

#4142 (comment)

[Dunqing]

I just saw your comment, Even with that it is a good thing to have the visit(enter_before) marker just in case we need it in the future. I can just remove the marker from Class and merge the generator code.

Yes, I think we can keep the visit(enter_before) marker for now. It may be useful for reimplementing the adding scope and resolving references.

[overlookmotel]

Personally, I don't think we should ever enter the node late. It is just confusing, and I can't see a use case.

If you want to avoid throwing away the generator code you already wrote, by all means merge it in, but would you consider "deactivating" visit(enter_before), so we don't start using it kind of by accident without discussing first?

[rzvxa]

I'll generate an error on encountering it for now.

[graphite-app]

Merge activity

• Jul 10, 9:59 AM EDT: The merge label 'merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jul 10, 10:01 AM EDT: rzvxa added this pull request to the Graphite merge queue.
• Jul 10, 10:06 AM EDT: rzvxa merged this pull request with the Graphite merge queue.