The main features for this release:
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Grammar caching: It's now possible to cache the results of the LALR grammar analysis, for x2 to x3 faster loading. Use
Lark(..., cache=True)or specify a file name. See here: https://lark-parser.readthedocs.io/en/latest/classes/ -
Grammar templates: Added support for grammar "functions" that expand in preprocessing. No docs yet, but see here for examples:
https://github.com/lark-parser/lark/blob/master/tests/test_parser.py#L845 -
Lark online IDE: Technically not a feature, but it's possible to run Lark in the browser. Now we also have a simple IDE on github pages: https://lark-parser.github.io/lark/ide/app.html
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Other changes:
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Improved performance for large grammars
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More debug prints when in debug mode
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Better support for PyInstaller
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Lots of bugfixes: mypy stubs, v_args, docs, and more.
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