An Early-Algorithm Context-free grammar Parser

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SPARK

SPARK stands for Scanning, Parsing, and Rewriting Kit. It uses Jay Early’s algorithm for LR parsing and comes with some generic Abstract Syntax Tree routines. There is also a prototype scanner which does its job by combining Python regular expressions.

The original version of this was written by John Aycock and was described in his 1988 paper: “Compiling Little Languages in Python” at the 7th International Python Conference.

Installation

This uses setup.py, so it follows the standard Python routine:

 python setup.py install # may need sudo
 # or if you have pyenv:
python setup.py develop

Example

The github example directory has a worked-out example; Package uncompyle6 uses this and contains a much larger example.

See Also

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