mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-28 11:38:01 +00:00
33ba2776c9
Instead of replacing `TokenTreesReader::token` in two steps, we can just do it in one, which is both simpler and faster.
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: