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202509b427
More postfix match fixes
These affect diagnostics only, as far as I can tell. I'm too lazy to come up with UI tests, but I could be convinced otherwise.
Specifically, I think changing the precedence computation actually doesn't change anything, but tweaking `contains_exterior_struct_lit` does mean that some diagnostics will begin parenthesizing `S {}.match {}`.
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| Cargo.toml | ||
| README.md | ||
The rustc_ast crate contains those things concerned purely with syntax
– that is, the AST ("abstract syntax tree"), along with some definitions for tokens and token streams, data structures/traits for mutating ASTs, and shared definitions for other AST-related parts of the compiler (like the lexer and macro-expansion).
For more information about how these things work in rustc, see the rustc dev guide: