pi-ux-ce/Django_kube
1
0
Fork 0
Code Issues 2 Pull Requests Actions Packages Projects Releases Wiki Activity
Files
460f18d85a0866aa5937bbaa45f9fe84c916600c
Django_kube/Webcal-python/venv/lib/python3.11/site-packages/TatSu-5.13.1.dist-info/METADATA
T

367 lines
14 KiB
Plaintext
Raw Blame History

Metadata-Version: 2.2
Name: TatSu
Version: 5.13.1
Summary: TatSu takes a grammar in a variation of EBNF as input, and outputs a memoizing PEG/Packrat parser in Python.
Author-email: Juancarlo Añez <apalala@gmail.com>
License: TATSU - A PEG/Packrat parser generator for Python
Copyright (C) 2017-2023 Juancarlo Añez
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
4. Redistributions of any form whatsoever must retain the following
acknowledgment: 'This product includes software developed by
"Juancarlo Añez" (https://apalala.bitbucket.io).'
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Project-URL: Homepage, https://github.com/neogeny/TatSu
Project-URL: Repository, https://github.com/neogeny/TatSu
Project-URL: Documentation, https://tatsu.readthedocs.io/en/stable/
Project-URL: Questions, https://stackoverflow.com/questions/tagged/tatsu
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved :: BSD License
Classifier: Natural Language :: English
Classifier: Intended Audience :: Developers
Classifier: Intended Audience :: Science/Research
Classifier: Environment :: Console
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Topic :: Software Development :: Code Generators
Classifier: Topic :: Software Development :: Compilers
Classifier: Topic :: Software Development :: Interpreters
Classifier: Topic :: Text Processing :: General
Requires-Python: >=3.10
Description-Content-Type: text/x-rst
License-File: LICENSE.txt
Provides-Extra: colorization
Requires-Dist: colorama; extra == "colorization"
Provides-Extra: parproc
Requires-Dist: rich; extra == "parproc"
.. |dragon| unicode:: 0x7ADC .. unicode dragon
.. |nbsp| unicode:: 0xA0 .. non breakable space
.. |TatSu| replace:: |dragon|\ |nbsp|\ **TatSu**
.. |TatSu-LTS| replace:: |dragon|\ |nbsp|\ **TatSu-LTS**
.. _RELEASES: https://github.com/neogeny/TatSu/releases
|license| |pyversions| |fury| |downloads| |actions| |docs|
*At least for the people who send me mail about a new language that
they're designing, the general advice is: do it to learn about how
to write a compiler. Don't have any expectations that anyone will
use it, unless you hook up with some sort of organization in a
position to push it hard. It's a lottery, and some can buy a lot of
the tickets. There are plenty of beautiful languages (more beautiful
than C) that didn't catch on. But someone does win the lottery, and
doing a language at least teaches you something.*
`Dennis Ritchie`_ (1941-2011) Creator of the C_ programming
language and of Unix_
|TatSu|
=======
|TatSu| is a tool that takes grammars in a variation of `EBNF`_ as input, and
outputs `memoizing`_ (`Packrat`_) `PEG`_ parsers in `Python`_.
Why use a PEG_ parser? Because `regular languages`_ (those parsable with Python's ``re`` package) *"cannot count"*. Any language with nested structures or with balancing of demarcations requires more than regular expressions to be parsed.
|TatSu| can compile a grammar stored in a string into a
``tatsu.grammars.Grammar`` object that can be used to parse any given
input, much like the `re`_ module does with regular expressions, or it can generate a Python_ module that implements the parser.
|TatSu| supports `left-recursive`_ rules in PEG_ grammars using the
algorithm_ by *Laurent* and *Mens*. The generated AST_ has the expected left associativity.
|TatSu| requires a maintained version of Python (>=3.12 at the moment). While no code
in |TatSu| yet depends on new language or standard library features,
the authors don't want to be constrained by Python version compatibility considerations
when developing features that will be part of future releases.
*If you need support for previous versions of Python, please consider* `TatSu-LTS`_,
*a friendly fork of* |TatSu| *aimed at compatibility with other versions of Python still used by
many projects. The developers of both projects work together to promote compatibility
with most versions of Python.*
.. _algorithm: http://norswap.com/pubs/sle2016.pdf
.. _TatSu-LTS: https://pypi.org/project/TatSu-LTS/
Installation
------------
.. code-block:: bash
$ pip install TatSu
Using the Tool
--------------
|TatSu| can be used as a library, much like `Python`_'s ``re``, by embedding grammars as strings and generating grammar models instead of generating Python_ code.
This compiles the grammar and generates an in-memory *parser* that can subsequently be used for parsing input with:
.. code-block:: python
parser = tatsu.compile(grammar)
Compiles the grammar and parses the given input producing an AST_ as result:
.. code-block:: python
ast = tatsu.parse(grammar, input)
The result is equivalent to calling:
.. code-block:: python
parser = compile(grammar)
ast = parser.parse(input)
Compiled grammars are cached for efficiency.
This compiles the grammar to the `Python`_ sourcecode that implements the parser:
.. code-block:: python
parser_source = tatsu.to_python_sourcecode(grammar)
This is an example of how to use |TatSu| as a library:
.. code-block:: python
GRAMMAR = '''
@@grammar::CALC
start = expression $ ;
expression
=
| expression '+' term
| expression '-' term
| term
;
term
=
| term '*' factor
| term '/' factor
| factor
;
factor
=
| '(' expression ')'
| number
;
number = /\d+/ ;
'''
if __name__ == '__main__':
import json
from tatsu import parse
from tatsu.util import asjson
ast = parse(GRAMMAR, '3 + 5 * ( 10 - 20 )')
print(json.dumps(asjson(ast), indent=2))
..
|TatSu| will use the first rule defined in the grammar as the *start* rule.
This is the output:
.. code-block:: console
[
"3",
"+",
[
"5",
"*",
[
"10",
"-",
"20"
]
]
]
Documentation
-------------
For a detailed explanation of what |TatSu| is capable of, please see the
documentation_.
.. _documentation: http://tatsu.readthedocs.io/
Questions?
----------
Please use the `[tatsu]`_ tag on `StackOverflow`_ for general Q&A, and limit
Github issues to bugs, enhancement proposals, and feature requests.
.. _[tatsu]: https://stackoverflow.com/tags/tatsu/info
Changes
-------
See the `RELEASES`_ for details.
License
-------
You may use |TatSu| under the terms of the `BSD`_-style license
described in the enclosed `LICENSE.txt`_ file. *If your project
requires different licensing* please `email`_.
.. _ANTLR: http://www.antlr.org/
.. _AST: http://en.wikipedia.org/wiki/Abstract_syntax_tree
.. _Abstract Syntax Tree: http://en.wikipedia.org/wiki/Abstract_syntax_tree
.. _Algol W: http://en.wikipedia.org/wiki/Algol_W
.. _Algorithms + Data Structures = Programs: http://www.amazon.com/Algorithms-Structures-Prentice-Hall-Automatic-Computation/dp/0130224189/
.. _BSD: http://en.wikipedia.org/wiki/BSD_licenses#2-clause_license_.28.22Simplified_BSD_License.22_or_.22FreeBSD_License.22.29
.. _Basel Shishani: https://bitbucket.org/basel-shishani
.. _C: http://en.wikipedia.org/wiki/C_language
.. _CHANGELOG: https://github.com/neogeny/TatSu/releases
.. _CSAIL at MIT: http://www.csail.mit.edu/
.. _Cyclomatic complexity: http://en.wikipedia.org/wiki/Cyclomatic_complexity
.. _David Röthlisberger: https://bitbucket.org/drothlis/
.. _Dennis Ritchie: http://en.wikipedia.org/wiki/Dennis_Ritchie
.. _EBNF: http://en.wikipedia.org/wiki/Ebnf
.. _English: http://en.wikipedia.org/wiki/English_grammar
.. _Euler: http://en.wikipedia.org/wiki/Euler_programming_language
.. _Grako: https://bitbucket.org/neogeny/grako/
.. _Jack: http://en.wikipedia.org/wiki/Javacc
.. _Japanese: http://en.wikipedia.org/wiki/Japanese_grammar
.. _KLOC: http://en.wikipedia.org/wiki/KLOC
.. _Kathryn Long: https://bitbucket.org/starkat
.. _Keywords: https://en.wikipedia.org/wiki/Reserved_word
.. _`left-recursive`: https://en.wikipedia.org/wiki/Left_recursion
.. _LL(1): http://en.wikipedia.org/wiki/LL(1)
.. _Marcus Brinkmann: http://blog.marcus-brinkmann.de/
.. _MediaWiki: http://www.mediawiki.org/wiki/MediaWiki
.. _Modula-2: http://en.wikipedia.org/wiki/Modula-2
.. _Modula: http://en.wikipedia.org/wiki/Modula
.. _Oberon-2: http://en.wikipedia.org/wiki/Oberon-2
.. _Oberon: http://en.wikipedia.org/wiki/Oberon_(programming_language)
.. _PEG and Packrat parsing mailing list: https://lists.csail.mit.edu/mailman/listinfo/peg
.. _PEG.js: http://pegjs.majda.cz/
.. _PEG: http://en.wikipedia.org/wiki/Parsing_expression_grammar
.. _PL/0: http://en.wikipedia.org/wiki/PL/0
.. _Packrat: http://bford.info/packrat/
.. _Pascal: http://en.wikipedia.org/wiki/Pascal_programming_language
.. _Paul Sargent: https://bitbucket.org/PaulS/
.. _Perl: http://www.perl.org/
.. _PyPy team: http://pypy.org/people.html
.. _PyPy: http://pypy.org/
.. _Python Weekly: http://www.pythonweekly.com/
.. _Python: http://python.org
.. _Reserved Words: https://en.wikipedia.org/wiki/Reserved_word
.. _Robert Speer: https://bitbucket.org/r_speer
.. _Ruby: http://www.ruby-lang.org/
.. _Semantic Graph: http://en.wikipedia.org/wiki/Abstract_semantic_graph
.. _StackOverflow: http://stackoverflow.com/tags/tatsu/info
.. _Sublime Text: https://www.sublimetext.com
.. _TatSu Forum: https://groups.google.com/forum/?fromgroups#!forum/tatsu
.. _UCAB: http://www.ucab.edu.ve/
.. _USB: http://www.usb.ve/
.. _Unix: http://en.wikipedia.org/wiki/Unix
.. _VIM: http://www.vim.org/
.. _WTK: http://en.wikipedia.org/wiki/Well-known_text
.. _Warth et al: http://www.vpri.org/pdf/tr2007002_packrat.pdf
.. _Well-known text: http://en.wikipedia.org/wiki/Well-known_text
.. _Wirth: http://en.wikipedia.org/wiki/Niklaus_Wirth
.. _`LICENSE.txt`: LICENSE.txt
.. _basel-shishani: https://bitbucket.org/basel-shishani
.. _blog post: http://dietbuddha.blogspot.com/2012/12/52python-encapsulating-exceptions-with.html
.. _colorama: https://pypi.python.org/pypi/colorama/
.. _context managers: http://docs.python.org/2/library/contextlib.html
.. _declensions: http://en.wikipedia.org/wiki/Declension
.. _drothlis: https://bitbucket.org/drothlis
.. _email: mailto:apalala@gmail.com
.. _exceptions: http://www.jeffknupp.com/blog/2013/02/06/write-cleaner-python-use-exceptions/
.. _franz\_g: https://bitbucket.org/franz_g
.. _gapag: https://bitbucket.org/gapag
.. _gegenschall: https://bitbucket.org/gegenschall
.. _gkimbar: https://bitbucket.org/gkimbar
.. _introduced: http://dl.acm.org/citation.cfm?id=964001.964011
.. _jimon: https://bitbucket.org/jimon
.. _keyword: https://en.wikipedia.org/wiki/Reserved_word
.. _keywords: https://en.wikipedia.org/wiki/Reserved_word
.. _lambdafu: http://blog.marcus-brinkmann.de/
.. _leewz: https://bitbucket.org/leewz
.. _linkdd: https://bitbucket.org/linkdd
.. _make a donation: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=P9PV7ZACB669J
.. _memoizing: http://en.wikipedia.org/wiki/Memoization
.. _nehz: https://bitbucket.org/nehz
.. _neumond: https://bitbucket.org/neumond
.. _parsewkt: https://github.com/cleder/parsewkt
.. _pauls: https://bitbucket.org/pauls
.. _pgebhard: https://bitbucket.org/pgebhard
.. _pygraphviz: https://pypi.python.org/pypi/pygraphviz
.. _r\_speer: https://bitbucket.org/r_speer
.. _raw string literal: https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals
.. _re: https://docs.python.org/3.7/library/re.html
.. _regular languages: https://en.wikipedia.org/wiki/Regular_language
.. _regex: https://pypi.python.org/pypi/regex
.. _siemer: https://bitbucket.org/siemer
.. _sjbrownBitbucket: https://bitbucket.org/sjbrownBitbucket
.. _smc.mw: https://github.com/lambdafu/smc.mw
.. _starkat: https://bitbucket.org/starkat
.. _tonico\_strasser: https://bitbucket.org/tonico_strasser
.. _vinay.sajip: https://bitbucket.org/vinay.sajip
.. _vmuriart: https://bitbucket.org/vmuriart
.. |fury| image:: https://badge.fury.io/py/TatSu.svg
:target: https://badge.fury.io/py/TatSu
.. |license| image:: https://img.shields.io/badge/license-BSD-blue.svg
:target: https://raw.githubusercontent.com/neogeny/tatsu/master/LICENSE.txt
.. |pyversions| image:: https://img.shields.io/pypi/pyversions/tatsu.svg
:target: https://pypi.python.org/pypi/tatsu
.. |actions| image:: https://github.com/neogeny/TatSu/actions/workflows/default.yml/badge.svg
:target: https://github.com/neogeny/TatSu/actions/workflows/default.yml
.. |docs| image:: https://readthedocs.org/projects/tatsu/badge/?version=stable
:target: http://tatsu.readthedocs.io/en/stable/
.. |downloads| image:: https://img.shields.io/pypi/dm/TatSu.svg
:target: https://pypistats.org/packages/tatsu
Reference in New Issue View Git Blame Copy Permalink