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 But are out of
date at the moment.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
Contributors
------------
Jonas Wielicki <j.wielicki@sotecware.net> (Python 3 support, testing)
Testing
-------
To run the TestSuite run
[pyLR1]$ python3 -m unittest discover -s test -v
License
-------
Copyright 2009, 2010, 2012 Sebastian Riese
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.