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Use 32 bits for RawSyntaxKind internally (#49)

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DQ 2023-04-07 19:18:47 +02:00 • committed by GitHub
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CHANGELOG.md
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@ -11,6 +11,7 @@
* Internal performance improvements for up to 10% faster tree building by avoiding unnecessary duplication of elements.
* Use `NonNull` for the internal representation of `SyntaxNode`, meaning it now benefits from niche optimizations (`Option<SyntaxNode>` is now the same size as `SyntaxNode` itself: the size of a pointer).
* `SyntaxKind` has been renamed to `RawSyntaxKind` to no longer conflict with user-defined `SyntaxKind` enumerations.
* `RawSyntaxKind` has been changed to use a 32-bit index internally, which means existing `Language` implementations and syntax kind `enum`s need to be adjusted to `#[repr(u32)]` and the corresponding conversions.
* The crate's export module structure has been reorganized to give different groups of definitions their own submodules. A `cstree::prelude` module is available, containing the most commonly needed types that were previously accessible via `use cstree::*`. Otherwise, the module structure is now as follows:
* `cstree`
* `Language`