⚡ Optimize cargo install list parsing (4.5x faster)#46
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Replaced `Regex` based parsing with manual string manipulation for `cargo install --list` output. This results in a ~4.5x performance improvement (34.74ms -> 7.66ms for 10k lines) by avoiding regex engine overhead. - Replaced `Regex` with `str::find`, `split`, and character validation. - Removed `regex` and `std::sync::OnceLock` usage from `cargo.rs`. - Maintained strict validation logic matching the original regex constraints. - Verified with benchmarks and existing test suite. Co-authored-by: mudcube <101564+mudcube@users.noreply.github.com>
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💡 What:
Replaced the
Regeximplementation for parsingcargo install --listoutput with a manual string parsing approach inrust/vm-package-manager/src/links/cargo.rs.🎯 Why:
The original implementation (even with
OnceLockoptimization) incurred overhead from the Regex engine. Manual string parsing is significantly faster for this specific format and reduces dependencies in this module.📊 Measured Improvement:
Benchmark results for parsing 10,000 lines:
The manual implementation maintains the exact same validation logic:
(...)and end with):.)./and notregistry+) are included.PR created automatically by Jules for task 10845065514067767937 started by @mudcube