Cython plugin for Lark, reimplementing the LALR parser & lexer for better performance on CPython.
Install:
pip install lark-cython
Usage:
import lark_cython
parser = Lark(grammar, parser="lalr", _plugins=lark_cython.plugins)
# Use Lark as you usually would, with a huge performance boost
See the examples for more.
Token instances do not inherit from str. You must use the value attribute to get the string.In current benchmarks, lark-cython is about 50% to 80% faster than Lark.
We're still in the early stages, and in the future, lark-cython might go a lot faster.
License: MIT
Author: Erez Shinan
Special thanks goes to Datafold for commissioning the draft for lark-cython, and allowing me to release it as open-source.
FAQs
A Lark plugin that optimizes LALR parsing using Cython
We found that lark-cython demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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