refactor(allocator): rename Bump to Arena

[overlookmotel]

Pure refactor. Rename Bump to Arena. The name "Bump" was a legacy from bumpalo, Arena is a more appropriate name.

No substantive changes, only renaming.

[overlookmotel]

• test(allocator): fix compile fail doctest #21400
• docs(allocator): remove references to "bump" from comments #21397
• refactor(allocator): rename bump module to arena #21396
• feat(allocator)!: rename Box and Vec methods #21395
• refactor(allocator): rename Bump to Arena #21394 👈 (View in Graphite)
• main

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[Copilot]

Pull request overview

Refactors oxc_allocator to rename the internal bump allocator type from Bump to Arena, updating call sites, docs, and tests to reflect the new naming while keeping behavior unchanged.

Changes:

• Rename allocator type and related APIs (Bump → Arena) across the crate and tests.
• Update Allocator internals to hold and expose an Arena (bump() → arena()).
• Propagate naming changes through arena-backed collections (Vec, HashMap, HashSet, RawVec) and documentation.

Reviewed changes

Copilot reviewed 23 out of 23 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
crates/oxc_allocator/tests/bump_try_alloc.rs	Updates integration test imports/variables to Arena.
crates/oxc_allocator/tests/bump/try_alloc_with.rs	Renames test usage from Bump to Arena.
crates/oxc_allocator/tests/bump/try_alloc_try_with.rs	Renames test usage from Bump to Arena.
crates/oxc_allocator/tests/bump/tests.rs	Renames test usage and one test name (bump_is_send → arena_is_send).
crates/oxc_allocator/tests/bump/quickchecks.rs	Updates quickcheck tests to use Arena.
crates/oxc_allocator/tests/bump/capacity.rs	Updates capacity test to use Arena.
crates/oxc_allocator/tests/bump/allocation_limit.rs	Updates allocation-limit tests and function name to Arena.
crates/oxc_allocator/tests/bump/alloc_with.rs	Renames test usage from Bump to Arena.
crates/oxc_allocator/tests/bump/alloc_try_with.rs	Renames test usage from Bump to Arena.
crates/oxc_allocator/tests/bump/alloc_fill.rs	Renames test usage from Bump to Arena.
crates/oxc_allocator/src/vec2/raw_vec.rs	Renames hazardous allocator accessor bump() → arena() and updates safety docs.
crates/oxc_allocator/src/vec2/mod.rs	Updates internal RawVec allocator access to arena().
crates/oxc_allocator/src/vec.rs	Switches arena-backed Vec to use Arena and updates safety docs.
crates/oxc_allocator/src/tracking.rs	Moves allocation tracking impl from Bump to Arena; updates Allocator delegation.
crates/oxc_allocator/src/string_builder.rs	Updates grow path to call allocator.arena().grow(...).
crates/oxc_allocator/src/hash_set.rs	Switches backing allocator type from &Bump to &Arena and updates docs.
crates/oxc_allocator/src/hash_map.rs	Switches backing allocator type from &Bump to &Arena and updates docs.
crates/oxc_allocator/src/from_raw_parts.rs	Updates raw-parts construction to use Arena::from_raw_parts and Allocator::from_arena.
crates/oxc_allocator/src/bump.rs	Renames the allocator struct to Arena and updates extensive docs/impls accordingly.
crates/oxc_allocator/src/boxed.rs	Updates safety docs to refer to Arena.
crates/oxc_allocator/src/allocator_api2.rs	Delegation updated from bump() to arena().
crates/oxc_allocator/src/allocator.rs	Renames internal field bump → arena, updates delegation methods, and introduces arena() accessor.
crates/oxc_allocator/src/alloc.rs	Updates Alloc impl target from Bump to Arena and related comments.

[codspeed-hq]

Merging this PR will not alter performance

✅ 48 untouched benchmarks
⏩ 3 skipped benchmarks¹

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_{Comparing om/04-13-refactor_allocator_rename_bump_to_arena_ (f9c4f29) with main (2e144c2)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 (f9c4f29) during the generation of this report, so 2e144c2 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[graphite-app]

Merge activity

• Apr 13, 6:32 PM UTC: overlookmotel added this pull request to the Graphite merge queue.
• Apr 13, 6:37 PM UTC: Merged by the Graphite merge queue.