Tree-sitter

Tree-sitter is a parser generator tool and incremental parsing library that builds concrete syntax trees from source code. It can efficiently update syntax trees as source files are edited, making it useful for text editors and other programming tools. The tool is designed to parse any programming language, operate fast enough to run on every keystroke, handle syntax errors gracefully, and work as a dependency-free library that can be embedded in applications.

Developed by Max Brunsfeld, Tree-sitter is written in Rust and released under the MIT License. The runtime library is written in pure C and can be embedded in any application. Tree-sitter provides language bindings for multiple languages including Python, JavaScript, Go, Ruby, and others, with both official and third-party bindings available. Parsers for many popular languages like JavaScript, Python, TypeScript, Java, C, and Rust are maintained in the upstream organization.