lark-parser/lark 0.11.2

Better grammar re-use, and tons of improvements

on GitHub

New Features:

• Better grammar re-use with the %override and %extend statements, which allow to rewrite and extend imported rules and tokens, similarly to class inheritance. (See this example: https://github.com/lark-parser/lark/blob/master/examples/advanced/extend_python.py)

Improvements

• Indenter now throws DedentError instead of AssertionError

• Improved the Python3 grammar, now works with reconstructor. (See this example: https://github.com/lark-parser/lark/blob/master/examples/advanced/reconstruct_python.py)

• Lots of refactoring for a better tomorrow.

• rule/terminals names can now be in unicode. (thanks @julienmalard)

• Better errors.

• Better type hints.

• lark.lark is now part of the standard library.

• Earley:

  • Now works with match_examples()
  • Now supports a custom lexer
  • Better handling of ignored terminals
  • Faster forest visiting, and a few edge-case bugfixes (thanks @chanicpanic)

Other

• Lark now accepts funding as a member of Github Sponsors! See here: https://github.com/sponsors/lark-parser