gotreesitter: Pure Go Implementation of Tree-Sitter Parser Library
By
odvcencio
Slow-proofed and worth the wait. Worth its weight in flour.
Summary
gotreesitter is a pure Go implementation of the tree-sitter parsing library that eliminates CGo dependencies, allowing cross-compilation to any platform Go supports including WebAssembly. The project loads the same parse-table format as the C runtime, extracts grammar tables from upstream parser.c files via ts2go, compresses them into binary blobs, and ships 206 grammars in its registry. The implementation includes the parser, lexer, query engine, incremental reparsing, arena allocator, external scanners, and tree cursor functionality without any C dependencies.
Key quotes
· 4 pulledPure-Go tree-sitter runtime. No CGo, no C toolchain. Cross-compiles to any GOOS/GOARCH target Go supports, including wasip1.
gotreesitter loads the same parse-table format that tree-sitter's C runtime uses. Grammar tables are extracted from upstream parser.c files by ts2go, compressed into binary blobs, and deserialized on first use.
Every Go tree-sitter binding in the ecosystem depends on CGo: gotreesitter eliminates the C dependency entirely.
The parser, lexer, query engine, incremental reparsing, arena allocator, external scanners, and tree cursor functionality are implemented in pure Go.
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