README - pyLRp python LR(1) parser generator
Author: Sebastian Riese sebastian.riese.mail@web.de
The sample files show how to use the parser generator. But are out of date at the moment. More documentation will follow. The parser generator is written in python3, but it can generate both python2 and python3 parsers.
The generated parsers are standalone modules.
usage: pyLRp.py [-h] [-o OFILE] [-l] [-L] [-g] [--print-lextable] [-D] [-d] [-f] [-q] [-T] [-3 | -2] infile
A pure python LALR(1)/LR(1) parser generator and lexer generator.
positional arguments: infile The parser specification to process
optional arguments: -h, --help show this help message and exit -o OFILE, --output-file OFILE Set the output file to OFILE [default: derived from infile] -l, --line-tracking Enable line tracking in the generated parser -L, --lalr Generate a LALR(1) parser instead of a LR(1) parser -g, --print-graph Print the LR state graph to stdout --print-lextable Print the lextables to stdout -D, --not-deduplicate Compress tables by reusing identical lines -d, --debug Write debug information to the generated file -f, --fast Fast run: generates larger and possibly slower parsers, but takes less time -q, --quiet Print less info -T, --trace Generate a parser that prints out a trace of its state -3, --python3 Generate python3 compatible parser [default] -2, --python2 Generate python2 compatible parser
Jonas Wielicki j.wielicki@sotecware.net (Python 3 support, testing)
To run the TestSuite run
[pyLR1]$ python3 -m unittest discover -s test -v
Copyright 2009, 2010, 2012 Sebastian Riese
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