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feat(codegen): expose Codegen::with_source_type method#22432

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feat(codegen): expose Codegen::with_source_type method#22432
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c/05-14-feat_codegen_expose_codegen_with_source_type_method

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@camc314

@camc314 camc314 commented May 14, 2026

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if we are only printing a fragment of a ast e.g. a expression, we can't control if is_jsx is true.

this means generics can be printed incorrectly as they are missing a , in jsx code.

@github-actions github-actions Bot added the A-codegen Area - Code Generation label May 14, 2026

camc314 commented May 14, 2026

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@camc314 camc314 self-assigned this May 14, 2026
@camc314 camc314 marked this pull request as ready for review May 14, 2026 16:54
Copilot AI review requested due to automatic review settings May 14, 2026 16:54
@camc314 camc314 added the 0-merge Merge with Graphite Merge Queue label May 14, 2026

camc314 commented May 14, 2026

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@camc314 camc314 force-pushed the c/05-14-feat_codegen_expose_codegen_with_source_type_method branch from 40db153 to 00ef956 Compare May 14, 2026 16:57

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Pull request overview

This PR exposes a new Codegen::with_source_type builder method so callers printing AST fragments without a Program can configure JSX-sensitive codegen behavior.

Changes:

  • Adds Codegen::with_source_type(SourceType).
  • Uses the provided SourceType to set the internal JSX printing mode.

Comment thread crates/oxc_codegen/src/lib.rs
Comment thread crates/oxc_codegen/src/lib.rs
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codspeed-hq Bot commented May 14, 2026

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Merging this PR will not alter performance

✅ 44 untouched benchmarks
⏩ 7 skipped benchmarks1


Comparing c/05-14-feat_codegen_expose_codegen_with_source_type_method (40db153) with main (08595fb)

Open in CodSpeed

Footnotes

  1. 7 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

if we are only printing a fragment of a ast e.g. a expression, we can't control if `is_jsx` is true.

this means generics can be printed incorrectly as they are missing a `,` in jsx code.
@graphite-app graphite-app Bot force-pushed the c/05-14-feat_codegen_expose_codegen_with_source_type_method branch from 00ef956 to bc91a17 Compare May 14, 2026 17:03
@graphite-app graphite-app Bot merged commit bc91a17 into main May 14, 2026
28 checks passed
@graphite-app graphite-app Bot deleted the c/05-14-feat_codegen_expose_codegen_with_source_type_method branch May 14, 2026 17:07
@graphite-app graphite-app Bot removed the 0-merge Merge with Graphite Merge Queue label May 14, 2026
overlookmotel added a commit that referenced this pull request May 15, 2026
### 🚀 Features

- bc91a17 codegen: Expose `Codegen::with_source_type` method (#22432)
(camc314)

### 🐛 Bug Fixes

- 5ac7e79 minifier: Drop unused-var-init pure IIFEs and preserve
annotation for downstream (#22349) (Dunqing)
- 4ab57eb allocator: Fixed-size allocators use `VirtualAlloc` on Windows
(#22124) (overlookmotel)
- 66d77eb allocator: Fix segfault on Linux MUSL with fixed-size
allocators (#22388) (overlookmotel)
- b8fbc1f transformer/object-rest-spread: Correct scope id when moving
bindings (#22419) (camc314)
- 18edc2c codegen: Keep `Object.defineProperty` property name as plain
string in minify (#22400) (Dunqing)
- dda33de transformer/explicit-resource-management: Align lexical
binding scopes (#22320) (camc314)
- 8e79de8 transformer: Preserve for-await statement bodies (#22361)
(camc314)
- 0cba210 transformer/class: Replace `new.target` in static blocks
(#22360) (camc314)
- 67ab1c9 transformer/es2018/for-await: Hoist for-await generated
bindings (#22355) (camc314)
- c3ceb4a transformer/object-rest-spread: Use hoisted scope for `for-of`
temp refs (#22347) (camc314)

### ⚡ Performance

- 73a9043 allocator/bitset: Avoid temp heap `String` allocation (#22403)
(camc314)
- 8b2f4f9 transformer/object-rest-spread: Collect `Vec<SymbolId` over
`Vec<BindingIdentifier>` (#22418) (camc314)
- 83679ea parser: Split TriviaBuilder::handle_token hot/cold paths
(#22415) (Boshen)
- 2c7d781 codegen: Inline identifier-name accessors (#22411) (Boshen)
- 618bc76 diagnostics: Inline `OxcDiagnosticInner` to avoid heap
allocation (#22406) (Boshen)
- 0b4e158 parser: Reserve cap `2` for sequence expressions vec (#22374)
(camc314)
- 5f3bdd0 codegen: Add `#[inline]` to `code`, `code_len` (#22373)
(camc314)

Co-authored-by: overlookmotel <[email protected]>
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