tree-sitter-rust

Rust grammar for tree-sitter

Features

Speed - When initially parsing a file, tree-sitter-rust takes around twice as long as Rustc's hand-coded parser.
```
$ wc -l examples/ast.rs
  2157 examples/ast.rs

$ rustc -Z ast-json-noexpand -Z time-passes examples/ast.rs | head -n1
  time: 0.007	parsing # (7 ms)

$ tree-sitter parse examples/ast.rs --quiet --time
  examples/ast.rs	16 ms
```
But if you edit the file after parsing it, this parser can generally update the previous existing syntax tree to reflect your edit in less than a millisecond, thanks to Tree-sitter's incremental parsing system.

The Rust Grammar Reference - The grammar reference provides chapters that formally define the language grammar.
The Rust Reference - While Rust does not have a specification, the reference tries to describe its working in detail. It tends to be out of date.
Keywords and Operators and Symbols.
Archive of the outdated Syntax Index that contains examples of all syntax in Rust cross-referenced with the section of The Book that describes it.