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The only place it is meaningfully used is in a panic message in `TokenStream::from_ast`. But `node.span()` doesn't need to be printed because `node` is also printed and it must contain the span. |
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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: