rustc-ap-syntax 198.0.0

Automatically published version of the package `syntax` in the rust-lang/rust repository from commit 31f1bc7b40469b9319f1ba610ad8760ebd11c3da The publishing script for this crate lives at: https://github.com/alexcrichton/rustc-auto-publish

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: