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devel / comp.lang.python.announce / [Python-announce] TatSu v5.9.0 - PEG parser generator

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o [Python-announce] TatSu v5.9.0 - PEG parser generatorJuancarlo Añez

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[Python-announce] TatSu v5.9.0 - PEG parser generator

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From: apal...@gmail.com (Juancarlo Añez)
Newsgroups: comp.lang.python.announce
Subject: [Python-announce] TatSu v5.9.0 - PEG parser generator
Date: Sun, 22 Oct 2023 10:38:16 -0400
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 by: Juancarlo Añez - Sun, 22 Oct 2023 14:38 UTC

竜 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 input with nested structures or
with balancing of demarcations requires more than regular expressions to be
parsed.
竜 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.
On this release:

- validate with Python 3.12 (#313
<https://github.com/neogeny/TatSu/pull/313>)
- drop support for Python 3.10 (#313
<https://github.com/neogeny/TatSu/pull/313>)
- move build configuration to pyproject.toml (#316
<https://github.com/neogeny/TatSu/pull/316> #317
<https://github.com/neogeny/TatSu/pull/317>)
- evaluate constant to a Python literal when possible (#304
<https://github.com/neogeny/TatSu/issues/304> #320
<https://github.com/neogeny/TatSu/pull/320>)
- fix comments_re and eol_comments_re so they effectively can be None (
#307 <https://github.com/neogeny/TatSu/pull/307> #312
<https://github.com/neogeny/TatSu/issues/312> #314
<https://github.com/neogeny/TatSu/pull/314>)
- skip over whitespace and comments before memoizing (#305
<https://github.com/neogeny/TatSu/issues/305> #306
<https://github.com/neogeny/TatSu/pull/306> #309
<https://github.com/neogeny/TatSu/pull/309> #318
<https://github.com/neogeny/TatSu/pull/318>)
- verify that () parses to None or is ignored (#308
<https://github.com/neogeny/TatSu/pull/308>)

--
Juancarlo Añez
mailto:apalala@gmail.com


devel / comp.lang.python.announce / [Python-announce] TatSu v5.9.0 - PEG parser generator

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