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1.7 KiB
1.7 KiB
Examples for Lark
How to run the examples
After cloning the repo, open the terminal into the root directory of the project, and run the following:
[lark]$ python -m examples.<name_of_example>
For example, the following will parse all the Python files in the standard library of your local installation:
[lark]$ python -m examples.python_parser
Beginners
- calc.py - A simple example of a REPL calculator
- json_parser.py - A simple JSON parser (comes with a tutorial, see docs)
- indented_tree.py - A demonstration of parsing indentation (“whitespace significant” language)
- fruitflies.py - A demonstration of ambiguity
- turtle_dsl.py - Implements a LOGO-like toy language for Python’s turtle, with interpreter.
- lark_grammar.py + lark.lark - A reference implementation of the Lark grammar (using LALR(1) + standard lexer)
Advanced
- error_reporting_lalr.py - A demonstration of example-driven error reporting with the LALR parser
- python_parser.py - A fully-working Python 2 & 3 parser (but not production ready yet!)
- conf_lalr.py - Demonstrates the power of LALR’s contextual lexer on a toy configuration language
- conf_earley.py - Demonstrates the power of Earley’s dynamic lexer on a toy configuration language
- custom_lexer.py - Demonstrates using a custom lexer to parse a non-textual stream of data
- reconstruct_json.py - Demonstrates the experimental text-reconstruction feature