1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
|
.. Copyright (c) 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|
|
*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 extended `EBNF`_ as input, and
outputs `memoizing`_ (`Packrat`_) `PEG`_ parsers in `Python`_. The classic
variations of EBNF_ (Tomassetti, EasyExtend, Wirth) and `ISO EBNF`_ are also
supported as input grammar format.
Why use a PEG_ parser? Because `regular languages`_ (those parseable 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| expects a maintained version of Python (>=3.14 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 future releases. That said, currently all tests run in versions down to
Python 3.12.
*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`_ 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 = '''
@@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`_ 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─┘ └─'='─┘ │
└──────────────────────────────────<┘
paramdef ●───┬─'::' ✂ ─ [params](params)──────────────────────────────────────┬──■
└─'(' ✂ ───┬─ [kwparams](kwparams)─────────────────────────┬─')'─┘
├─ [params](params)',' ✂ ─ [kwparams](kwparams)─┤
└─ [params](params)─────────────────────────────┘
rule∷Rule ●─ [decorators](──┬→──────────┬──) [name](name) ✂ ───┬─→ >(paramdef) ─┬───┬─→'<' ✂ ─ [base](known_name)─┬───┬─'='──┬─ ✂ ─ [exp](expre)RULE_END ✂ ──■
├→decorator─┤ └─→──────────────┘ └─→───────────────────────────┘ ├─':='─┤
└──────────<┘ └─':'──┘
RULE_END ●───┬─EMPTYLINE──┬─→';'─┬──┬──■
│ └─→────┘ │
├─⇥ ␃ │
└─';'──────────────────┘
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─┤ │
│ └───────────────<┘ │
└───┬── ![EMPTYLINE]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
.. _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
.. _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
.. |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&logo=readthedocs
:target: http://tatsu.readthedocs.io/en/stable/
.. |installs| image:: https://img.shields.io/pypi/dm/tatsu.svg?label=installs&logo=pypi
:target: https://pypistats.org/packages/tatsu
.. |downloads| image:: https://img.shields.io/github/downloads/neogeny/tatsu/total?label=downloads
:target: https://pypistats.org/packages/tatsu
.. |sponsor| image:: https://img.shields.io/badge/Sponsor-EA4AAA?label=TatSu
:target: https://github.com/sponsors/neogeny
|
