rustc-ap-syntax 140.0.0

Automatically published version of the package `syntax` in the rust-lang/rust repository from commit 29ffe51e34ec0491806befadc4f820b132b50f9e The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish
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The syntax 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.

For more information about how these things work in rustc, see the rustc guide: