rustc-ap-syntax 283.0.0

Automatically published version of the package `syntax` in the rust-lang/rust repository from commit de9666f123e800d5fc34210f23127aa6a5d6e4ef 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: