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update rustc_ast crate descriptions in documentation #90518

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Nov 4, 2021
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update rustc_ast crate descriptions in documentation #90518

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3 changes: 1 addition & 2 deletions compiler/rustc_ast/README.md
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The `rustc_ast` crate contains those things concerned purely with syntax
– that is, the AST ("abstract syntax tree"), parser, pretty-printer,
lexer, macro expander, and utilities for traversing ASTs.
– 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).
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Hmm, I'm not even sure why this file exists. I thought all the compiler/ READMEs were moved to the rustc-dev-guide.

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I'd assume that's because this gets published to crates.io as part of the auto publish process

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Ah, I see 👍


For more information about how these things work in rustc, see the
rustc dev guide:
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2 changes: 1 addition & 1 deletion compiler/rustc_ast/src/lib.rs
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//! The Rust parser and macro expander.
//! The Rust Abstract Syntax Tree (AST).
//!
//! # Note
//!
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