Redesigned `Components` iterator to use front and back indexing instead mutating and subslicing path field#156496

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asder8215 wants to merge 6 commits into

rust-lang:mainfrom

asder8215:components_rewrite

Commits on May 12, 2026

Redesigned Components iterator to use front and back indexing instead of mutating and subslicing path field; as a result, Components iterator memory size goes from 64 bytes to 40 bytes and as_path …
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Commits on May 15, 2026

Refactored some code, check subslice in fast path of Components Equality, added safety comments, and check for root dir after Prefix component (e.g., '\\?\checkout\src\tools' should produce Prefix,…
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Commits on May 16, 2026

Optimized finding first separator in the front and back direction using iter().position()/rposition()
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Commits on May 17, 2026

Renamed advanced_* functions to normalize_*, refactored code inside there to use iter().position()/.iter().rposition(), refactored code in compare_components, and removed stale comments
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Commits on May 19, 2026

Removed trim_trailing_sep function inside Path::components and used Components::normalize_back instead, refactored Components::as_path code
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Commits on May 22, 2026

Improve performance of compare_components function using what was done in previous implementation, but making it work with Components<'_> front index
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