(poc/RFC) perf(parser): record nodes, scopes, symbols, and references while parsing

[DonIsaac]

Add Statistics to AstBuilder and record how many AST nodes, symbols, scopes, and references were encountered during parsing.

I know @overlookmotel is considering passing around &mut AstBuilder<'a> in the parser, so I'm putting this here for conversation. It has the following benefits:

• AstBuilder stays Copy
• No breaking API changes

And has the following downsides:

• Uses a small amount of unsafe rust
• StatisticsCell can cause a memory leak if not used properly
• StatisticsCell implementation is somewhat esoteric

NOTE: tests are failing because it does not record quite the correct number of each statistic, yet the point of this PR remains.

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[DonIsaac]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
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• (poc/RFC) perf(parser): record nodes, scopes, symbols, and references while parsing #4926 👈
• refactor(ast): make AstBuilder non-exhaustive #4925
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #4926 will degrade performances by 9.54%

_{Comparing don/08-15-_poc_perf_parser_record_nodes_scopes_symbols_and_references_while_parsing (1b3b2ad) with don/08-15-refactor_ast_make_astbuilder_non-exhaustive (1082b22)}

Summary

❌ 5 regressions
✅ 24 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	don/08-15-refactor_ast_make_astbuilder_non-exhaustive	don/08-15-_poc_perf_parser_record_nodes_scopes_symbols_and_references_while_parsing	Change
❌	parser[RadixUIAdoptionSection.jsx]	77.1 µs	81 µs	-4.9%
❌	semantic[RadixUIAdoptionSection.jsx]	99.8 µs	110.4 µs	-9.54%
❌	semantic[antd.js]	126.9 ms	131.7 ms	-3.67%
❌	semantic[cal.com.tsx]	46.7 ms	48.4 ms	-3.38%
❌	semantic[pdf.mjs]	20.8 ms	21.9 ms	-4.78%

[overlookmotel]

@DonIsaac I've not written up my conclusions on AST Node IDs yet. Will try to do that today. We may be able to use some of the stuff in this PR.