perf(parser): avoid vec clone in parse_heritage_clause

[camc314]

note: no perf improvement expected as this path isn't taken in the parser benchmarks

[camc314]

• perf(parser): pre-allocate extends vec with 1 cap #20667
• perf(parser): avoid re-allocating when parsing import stmt #20666
• perf(parser): avoid vec clone in parse_heritage_clause #20665 👈 (View in Graphite)
• main

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[Copilot]

Pull request overview

This PR removes an unnecessary re-allocation when parsing a TypeScript implements clause in class heritage parsing, simplifying the code path and avoiding an extra Vec construction.

Changes:

• Replace self.ast.vec_from_iter(self.parse_ts_implements_clause()) with direct use of the returned Vec from parse_ts_implements_clause().

[codspeed-hq]

Merging this PR will not alter performance

✅ 53 untouched benchmarks
⏩ 3 skipped benchmarks¹

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_{Comparing c/03-23-perf_parser_avoid_vec_clone (0373c67) with main (2917bb2)²}

Footnotes

1. 3 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. ↩

2. No successful run was found on main (6b5cd8c) during the generation of this report, so 2917bb2 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[graphite-app]

Merge activity

• Mar 24, 4:00 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Mar 24, 4:04 AM UTC: Merged by the Graphite merge queue.