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Merged
rhettinger merged 3 commits into from
May 7, 2020
Merged

bpo-40517: Implement syntax highlighting support for ASDL #19967

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b35c16e
bpo-40517: Implement syntax highlighting support for ASDL
isidentical May 5, 2020
6f68610
boldify class names
isidentical May 6, 2020
8ff3e69
dark boldify module
isidentical May 6, 2020
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bpo-40517: Implement syntax highlighting support for ASDL
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@isidentical
isidentical committed May 6, 2020
commit b35c16e92354a8d07d55bad01ec39f7e105cad5c
3 changes: 2 additions & 1 deletion Doc/conf.py
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Expand Up @@ -14,7 +14,8 @@
# ---------------------

extensions = ['sphinx.ext.coverage', 'sphinx.ext.doctest',
'pyspecific', 'c_annotations', 'escape4chm']
'pyspecific', 'c_annotations', 'escape4chm',
'asdl_highlight']


doctest_global_setup = '''
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2 changes: 1 addition & 1 deletion Doc/library/ast.rst
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Expand Up @@ -35,7 +35,7 @@ Abstract Grammar
The abstract grammar is currently defined as follows:

.. literalinclude:: ../../Parser/Python.asdl
:language: none
:language: asdl


Node classes
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51 changes: 51 additions & 0 deletions Doc/tools/extensions/asdl_highlight.py
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@@ -0,0 +1,51 @@
import os
import sys
sys.path.append(os.path.abspath("../Parser/"))

from pygments.lexer import RegexLexer, bygroups, include, words
from pygments.token import (Comment, Generic, Keyword, Name, Operator,
Punctuation, Text)

from asdl import builtin_types
from sphinx.highlighting import lexers

class ASDLLexer(RegexLexer):
name = "ASDL"
aliases = ["asdl"]
filenames = ["*.asdl"]
_name = r"([^\W\d]\w*)"
_text_ws = r"(\s*)"

tokens = {
"ws": [
(r"\n", Text),
(r"\s+", Text),
(r"--.*?$", Comment.Singleline),
],
"root": [
include("ws"),
(
r"(module)" + _text_ws + _name,
bygroups(Keyword, Text, Name.Class),
),
(
r"(\w+)(\*\s|\?\s|\s)(\w+)",
bygroups(Name.Builtin.Pseudo, Operator, Name),
),
(words(builtin_types), Name.Builtin),
(r"attributes", Name.Builtin),
(
_name + _text_ws + "(=)",
bygroups(Name, Text, Operator),
),
(_name, Name.Function),
(r"\|", Operator),
(r"{|}|\(|\)", Punctuation),
(r".", Text),
],
}


def setup(app):
lexers["asdl"] = ASDLLexer()
return {'version': '1.0', 'parallel_read_safe': True}