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Lezer ("reader" in Dutch, pronounced pretty much as laser) is an incremental GLR parser intended for use in an editor or similar system, which needs to keep a representation of the program current during changes and in the face of syntax errors.
It prioritizes speed and compactness (both of parser table files and of syntax tree) over having a highly usable parse tree—trees nodes are just blobs with a start, end, tag, and set of child nodes, with no further labeling of child nodes or extra metadata.
This package contains the run-time parser library. It consumes parsers generated by lezer-generator.
The parser programming interface is documented on the website.
The code is licensed under an MIT license.
This project was hugely inspired by tree-sitter.