Introduction

Tree-sitter is a parser generator tool and an incremental parsing library. It can build a concrete syntax tree for a source file and efficiently update the syntax tree as the source file is edited. Tree-sitter aims to be:

General enough to parse any programming language
Fast enough to parse on every keystroke in a text editor
Robust enough to provide useful results even in the presence of syntax errors
Dependency-free so that the runtime library (which is written in pure C11) can be embedded in any application

Language Bindings

There are bindings that allow Tree-sitter to be used from the following languages:

Official

Third-party

Keep in mind that some of the bindings may be incomplete or out of date.

Parsers

The following parsers can be found in the upstream organization:

A list of known parsers can be found in the wiki.

Talks on Tree-sitter

Underlying Research

The design of Tree-sitter was greatly influenced by the following research papers: