Rust grammar for tree-sitter
Speed — When initially parsing a file,
tree-sitter-rusttakes 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 It tends to be out of date.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- Archive of the outdated Syntax Index that contains examples of all syntax in Rust cross-referenced with the section of The Book that describes it.