.. Copyright © 2017-2026 Juancarlo Añez (apalala@gmail.com)
.. SPDX-License-Identifier: BSD-4-Clause

.. |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| ​ |actions| ​ |docs| ​ |installs|
| |sponsor|
|

|TatSu|
=======

    *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| is a tool that takes grammars in extended `EBNF`_ as input, and
outputs `memoizing`_ (`Packrat`_) `PEG`_ parsers in `Python`_. The classic
variations of EBNF_ (Tomassetti, EasyExtend, Wirth) and `ISO EBNF`_ are
supported as input grammar formats.


  **Sibling Projects!**

  Take a look at the sibling projects:
    * `修TieXiu`_ in `Rust`
    * `⻰OGoPEGo`_ in `Go`
    * `꘩TS’emekwes`_ in `TypeScript`

  They are functionally complete and pass all the |TatSu| test suite.

  Some features are implemented differently to abide to the semantics and
  idioms of each language (features being deprecated in |TatSu| are missing).

  Prepare to be surprised at the performance differences, after thorough
  optimization, of `Python` versus `Go`, `Rust`, and `TypeScript`.

.. _修TieXiu: https://pypi.org/project/TieXiu/
.. _`⻰OGoPEGo`: https://pypi.org/project/ogopego/
.. _`꘩TS’emekwes`: https://github.com/neogeny/tsemekwes

The New CLI Tool
----------------

.. image:: https://vhs.charm.sh/vhs-23V9mzFKttlDbN1znR0lY6.gif
    :alt: New CLI tool demo
    :width: 800px

Why use a `PEG`_ parser generator?
----------------------------------

Regular expressions are *“memory-less”*—they excel at finding flat patterns
like email addresses or phone numbers, but they fail once data becomes
hierarchical. Regular expressions cannot *"count"* or balance demarcations
(a regex cannot reliably validate whether opening and closing parenthesis are
matched in a nested math equation).

Parsing is the essential step up when you need to understand the **logic and
structure** of information rather than just its appearance. Parsing constructs
an **Abstract Syntax Tree** (AST_) of the input, a hierarchical map that
represents how different parts of a sequence relate to one another.

* **Recursive Structures:** Whenever a piece of data can contain
  a version of itself (like a folder inside a folder, or a conditional
  ``if`` statement inside another ``if``), you need a parser to track the
  depth and scope.

* **Translating Formats:** When converting one format into another, a
  parser ensures that the *meaning* of the original structure is
  preserved, preventing the *"data soup"* that occurs when using simple
  find-and-replace tools.

* **Ambiguity Resolution:** In complex sequences, the same sub-sequence might
  mean different things depending on where it sits in the tree. A parser
  uses the surrounding context to decide how to treat that sequence,
  whereas a regex treats every match in isolation.

* **Domain-Specific Languages (DSL):** Parsing allows the creation of
  specialized *"mini-languages"* tailored to a specific field, such as hardware
  description, music notation, or complex business rules.

* **Executable Logic:** While a regex can tell you if a string
  *looks* like a command, a parser turns that string into an object that a
  computer can actually execute, ensuring the order of operations and
  dependencies are strictly followed.

|TatSu| can compile a grammar stored in a string into a ``Grammar`` object that
can be used to parse any given input (much like the `re`_ module does with regular
expressions). |TatSu| can also 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.

Compatibility
-------------

|TatSu| expects a maintained_ version of Python (>=3.13), but currently all tests
run in versions of Python down to Python 3.12. |TatSu| is also compatible with the
current pre-release version of Python 3.15.

*For older versions of Python, you may consider* `TatSu-LTS`_, *a
friendly fork of* |TatSu| *aimed at compatibility*.

.. _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`_ source code 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 = '''
        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(ast.asjsons())
..

|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`_ file. *If your project
requires different licensing* please `email`_.


For Fun
-------

This is a diagram of the grammar for |TatSu|'s own grammar language:


.. code:: console

    start ●─grammar─■

    grammar[Grammar] ●─ [title](`TATSU`)──┬→───────────────────────────────────┬── [`rules`]+(rule)──┬→───────────────────────────────┬──⇥＄
                                          ├→──┬─ [`directives`]+(directive)─┬──┤                     ├→──┬─ [`rules`]+(rule)───────┬──┤
                                          │   └─ [`keywords`]+(keyword)─────┘  │                     │   └─ [`keywords`]+(keyword)─┘  │
                                          └───────────────────────────────────<┘                     └───────────────────────────────<┘

    directive ●─'@@'─ !['keyword'] ✂ ───┬─ [name](──┬─'comments'─────┬─) ✂ ─'::' ✂ ─ [value](regex)────────────┬─ ✂ ──■
                                        │           └─'eol_comments'─┘                                         │
                                        ├─ [name]('whitespace') ✂ ─'::' ✂ ─ [value](──┬─regex───┬─)────────────┤
                                        │                                             ├─string──┤              │
                                        │                                             ├─'None'──┤              │
                                        │                                             ├─'False'─┤              │
                                        │                                             └─`None`──┘              │
                                        ├─ [name](──┬─'nameguard'──────┬─) ✂ ───┬─'::' ✂ ─ [value](boolean)─┬──┤
                                        │           ├─'ignorecase'─────┤        └─ [value](`True`)──────────┘  │
                                        │           ├─'left_recursion'─┤                                       │
                                        │           ├─'parseinfo'──────┤                                       │
                                        │           └─'memoization'────┘                                       │
                                        ├─ [name]('grammar') ✂ ─'::' ✂ ─ [value](word)─────────────────────────┤
                                        └─ [name]('namechars') ✂ ─'::' ✂ ─ [value](string)─────────────────────┘

    keywords ●───┬─keywords─┬───■
                 └─────────<┘

    keyword ●─'@@keyword' ✂ ─'::' ✂ ───┬→──────────────────────────────────┬───■
                                       ├→ @+(──┬─word───┬─)─ ![──┬─':'─┬─]─┤
                                       │       └─string─┘        └─'='─┘   │
                                       └──────────────────────────────────<┘

    the_params_at_last ●───┬─ [kwparams](kwparams)─────────────────────────┬──■
                           ├─ [params](params)',' ✂ ─ [kwparams](kwparams)─┤
                           └─ [params](params)─────────────────────────────┘

    paramdef ●───┬─'[' ✂ ─ >(the_params_at_last) ']'─┬──■
                 ├─'(' ✂ ─ >(the_params_at_last) ')'─┤
                 └─'::' ✂ ─ [params](params)─────────┘

    rule[Rule] ●─ [decorators](──┬→──────────┬──) [name](name) ✂ ───┬─→ >(paramdef) ─┬───┬─→'<' ✂ ─ [base](known_name)─┬───┬─'='──┬─ ✂ ─ [exp](expre)ENDRULE ✂ ──■
                                 ├→decorator─┤                      └─→──────────────┘   └─→───────────────────────────┘   ├─':='─┤
                                 └──────────<┘                                                                             └─':'──┘

    ENDRULE ●───┬── &[UNINDENTED]──────┬──■
                ├─EMPTYLINE──┬─→';'─┬──┤
                │            └─→────┘  │
                ├─⇥＄                  │
                └─';'──────────────────┘

    UNINDENTED ●─/(?=\s*(?:\r?\n|\r)[^\s])/──■

    EMPTYLINE ●─/(?:\s*(?:\r?\n|\r)){2,}/──■

    decorator ●─'@'─ !['@'] ✂ ─ @(──┬─'override'─┬─)─■
                                    ├─'name'─────┤
                                    └─'nomemo'───┘

    params ●─ @+(first_param)──┬→────────────────────────────┬───■
                               ├→',' @+(literal)─ !['='] ✂ ──┤
                               └────────────────────────────<┘

    first_param ●───┬─path────┬──■
                    └─literal─┘

    kwparams ●───┬→────────────┬───■
                 ├→',' ✂ ─pair─┤
                 └────────────<┘

    pair ●─ @+(word)'=' ✂ ─ @+(literal)─■

    expre ●───┬─choice───┬──■
              └─sequence─┘

    choice[Choice] ●───┬─→'|' ✂ ──┬─ @+(option)──┬─'|' ✂ ─ @+(option)─┬───■
                       └─→────────┘              └───────────────────<┘

    option[Option] ●─ @(sequence)─■

    sequence[Sequence] ●───┬── &[element',']──┬→───────────────┬───┬──■
                           │                  ├→',' ✂ ─element─┤   │
                           │                  └───────────────<┘   │
                           └───┬── ![ENDRULE]element─┬─────────────┘
                               └────────────────────<┘

    element ●───┬─rule_include─┬──■
                ├─named────────┤
                ├─override─────┤
                └─term─────────┘

    rule_include[RuleInclude] ●─'>' ✂ ─ @(known_name)─■

    named ●───┬─named_list───┬──■
              └─named_single─┘

    named_list[NamedList] ●─ [name](name)'+:' ✂ ─ [exp](term)─■

    named_single[Named] ●─ [name](name)':' ✂ ─ [exp](term)─■

    override ●───┬─override_list──────────────┬──■
                 ├─override_single────────────┤
                 └─override_single_deprecated─┘

    override_list[OverrideList] ●─'@+:' ✂ ─ @(term)─■

    override_single[Override] ●─'@:' ✂ ─ @(term)─■

    override_single_deprecated[Override] ●─'@' ✂ ─ @(term)─■

    term ●───┬─void───────────────┬──■
             ├─gather─────────────┤
             ├─join───────────────┤
             ├─left_join──────────┤
             ├─right_join─────────┤
             ├─empty_closure──────┤
             ├─positive_closure───┤
             ├─closure────────────┤
             ├─optional───────────┤
             ├─skip_to────────────┤
             ├─lookahead──────────┤
             ├─negative_lookahead─┤
             ├─cut────────────────┤
             ├─cut_deprecated─────┤
             └─atom───────────────┘

    group[Group] ●─'(' ✂ ─ @(expre)')' ✂ ──■

    gather ●── &[atom'.{'] ✂ ───┬─positive_gather─┬──■
                                └─normal_gather───┘

    positive_gather[PositiveGather] ●─ [sep](atom)'.{' [exp](expre)'}'──┬─'+'─┬─ ✂ ──■
                                                                        └─'-'─┘

    normal_gather[Gather] ●─ [sep](atom)'.{' ✂ ─ [exp](expre)'}'──┬─→'*' ✂ ──┬─ ✂ ──■
                                                                  └─→────────┘

    join ●── &[atom'%{'] ✂ ───┬─positive_join─┬──■
                              └─normal_join───┘

    positive_join[PositiveJoin] ●─ [sep](atom)'%{' [exp](expre)'}'──┬─'+'─┬─ ✂ ──■
                                                                    └─'-'─┘

    normal_join[Join] ●─ [sep](atom)'%{' ✂ ─ [exp](expre)'}'──┬─→'*' ✂ ──┬─ ✂ ──■
                                                              └─→────────┘

    left_join[LeftJoin] ●─ [sep](atom)'<{' ✂ ─ [exp](expre)'}'──┬─'+'─┬─ ✂ ──■
                                                                └─'-'─┘

    right_join[RightJoin] ●─ [sep](atom)'>{' ✂ ─ [exp](expre)'}'──┬─'+'─┬─ ✂ ──■
                                                                  └─'-'─┘

    positive_closure[PositiveClosure] ●───┬─'{' @(expre)'}'──┬─'-'─┬─ ✂ ──┬──■
                                          │                  └─'+'─┘      │
                                          └─ @(atom)'+' ✂ ────────────────┘

    closure[Closure] ●───┬─'{' @(expre)'}'──┬─→'*'─┬─ ✂ ──┬──■
                         │                  └─→────┘      │
                         └─ @(atom)'*' ✂ ─────────────────┘

    empty_closure[EmptyClosure] ●─'{}' ✂ ─ @( ∅ )─■

    optional[Optional] ●───┬─'[' ✂ ─ @(expre)']' ✂ ──────────┬──■
                           └─ @(atom)─ ![──┬─'?"'─┬─]'?' ✂ ──┘
                                           ├─"?'"─┤
                                           └─'?/'─┘

    lookahead[Lookahead] ●─'&' ✂ ─ @(term)─■

    negative_lookahead[NegativeLookahead] ●─'!' ✂ ─ @(term)─■

    skip_to[SkipTo] ●─'->' ✂ ─ @(term)─■

    atom ●───┬─group────┬──■
             ├─token────┤
             ├─alert────┤
             ├─constant─┤
             ├─call─────┤
             ├─pattern──┤
             ├─dot──────┤
             └─eof──────┘

    call[Call] ●─word─■

    void[Void] ●─'()' ✂ ──■

    fail[Fail] ●─'!()' ✂ ──■

    cut[Cut] ●─'~' ✂ ──■

    cut_deprecated[Cut] ●─'>>' ✂ ──■

    known_name ●─name ✂ ──■

    name ●─word─■

    constant[Constant] ●── &['`']──┬─/(?ms)```((?:.|\n)*?)```/──┬──■
                                   ├─'`' @(literal)'`'──────────┤
                                   └─/`(.*?)`/──────────────────┘

    alert[Alert] ●─ [level](/\^+/─) [message](constant)─■

    token[Token] ●───┬─string─────┬──■
                     └─raw_string─┘

    literal ●───┬─string─────┬──■
                ├─raw_string─┤
                ├─boolean────┤
                ├─word───────┤
                ├─hex────────┤
                ├─float──────┤
                ├─int────────┤
                └─null───────┘

    string ●─STRING─■

    raw_string ●─//─ @(STRING)─■

    STRING ●───┬─ @(/"((?:[^"\n]|\\"|\\\\)*?)"/─) ✂ ─────┬──■
               └─ @(/r"'((?:[^'\n]|\\'|\\\\)*?)'"/─) ✂ ──┘

    hex ●─/0[xX](?:\d|[a-fA-F])+/──■

    float ●─/[-+]?(?:\d+\.\d*|\d*\.\d+)(?:[Ee][-+]?\d+)?/──■

    int ●─/[-+]?\d+/──■

    path ●─/(?!\d)\w+(?:::(?!\d)\w+)+/──■

    word ●─/(?!\d)\w+/──■

    dot[Dot] ●─'/./'─■

    pattern[Pattern] ●─regexes─■

    regexes ●───┬→─────────────┬───■
                ├→'+' ✂ ─regex─┤
                └─────────────<┘

    regex ●───┬─'/' ✂ ─ @(/(?:[^/\\]|\\/|\\.)*/─)'/' ✂ ──┬──■
              ├─'?' @(STRING)────────────────────────────┤
              └─deprecated_regex─────────────────────────┘

    deprecated_regex ●─'?/' ✂ ─ @(/(?:.|\n)*?(?=/\?)/─)//\?+/─ ✂ ──■

    boolean ●───┬─'True'──┬──■
                └─'False'─┘

    null ●─'None'─■

    eof[EOF] ●─'$' ✂ ──■


.. _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
.. _ISO 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`: LICENSE
.. _basel-shishani: https://bitbucket.org/basel-shishani
.. _blog post: http://dietbuddha.blogspot.com/2012/12/52python-encapsulating-exceptions-with.html
.. _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
.. _maintained: https://devguide.python.org/versions/#supported-versions
.. _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
.. _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

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.. |license| image:: https://img.shields.io/badge/license-BSD-blue.svg
   :target: https://raw.githubusercontent.com/neogeny/tatsu/master/LICENSE
.. |pyversions| image:: https://img.shields.io/pypi/pyversions/tatsu.svg
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.. |docs| image:: https://readthedocs.org/projects/tatsu/badge/?version=stable&logo=readthedocs
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.. |installs| image:: https://img.shields.io/pypi/dm/tatsu.svg?label=installs&logo=pypi
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.. |sponsor| image:: https://img.shields.io/badge/Sponsor-EA4AAA?label=TatSu
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.. |codspeed| image:: https://img.shields.io/endpoint?url=https://codspeed.io/badge.json
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