Dunqing 32bdc5b1d1 feat(allocator): construct ArenaHashSet with any Default hasher (#26372) ...

This PR is inspired by #26333, addresses the repeated `with_hasher_in(IdentBuildHasher, allocator)` call, and removes the extra `'ident` lifetime.

`ArenaHashMap::new_in` works with any `Default` hasher, so `ArenaIdentHashMap::new_in(allocator)` picks `IdentBuildHasher` automatically. `ArenaHashSet` only has `new_in`, `with_capacity_in` and `from_iter_in` for `FxBuildHasher`, so an `Ident`-keyed arena set has to call `with_hasher_in(IdentBuildHasher, allocator)` every time (see #26333).

Mirror the map's `S: Default` impl on the set and add an `ArenaIdentHashSet<'alloc>` alias next to `ArenaIdentHashMap`. Nothing calls the `FxBuildHasher`-only constructors today, so no other code changes.

The alias takes a single lifetime, same as `ArenaIdentHashMap`. A separate lifetime for the `Ident` keys is not needed, and dropping it is sound: both `ArenaHashSet` and `Ident` are covariant, so when the idents are borrowed from somewhere other than the arena (for example `Scoping` in the mangler), the borrow checker shrinks `'alloc` to the shorter of the two borrows. The set can never outlive the strings its idents point to.

2026-09-07 05:09:38 +00:00

..

compact_str.rs

refactor(str)!: rename Atom to Str (#20835)

2026-03-30 02:40:33 +00:00

ident_hasher.rs

feat(str)!: move IdentBuildHasher to oxc_str crate (#24717)

2026-07-20 10:48:48 +00:00

ident.rs

feat(allocator): construct ArenaHashSet with any Default hasher (#26372)

2026-09-07 05:09:38 +00:00

lib.rs

feat(allocator): construct ArenaHashSet with any Default hasher (#26372)

2026-09-07 05:09:38 +00:00

str.rs

refactor(allocator, str): use impl GetAllocator instead of generic params (#25177)

2026-08-01 15:40:56 +00:00