25f230191f
That way, we can set it to "" for old lexers, and check that it's present on new lexers. (In the future, we might also use it for better presentation in the documentation.)
58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
"""
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pygments.lexers.graphviz
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~~~~~~~~~~~~~~~~~~~~~~~~
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Lexer for the DOT language (graphviz).
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:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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from pygments.lexer import RegexLexer, bygroups
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from pygments.token import Comment, Keyword, Operator, Name, String, Number, \
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Punctuation, Whitespace
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__all__ = ['GraphvizLexer']
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class GraphvizLexer(RegexLexer):
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"""
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For graphviz DOT graph description language.
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"""
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name = 'Graphviz'
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url = 'https://www.graphviz.org/doc/info/lang.html'
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aliases = ['graphviz', 'dot']
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filenames = ['*.gv', '*.dot']
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mimetypes = ['text/x-graphviz', 'text/vnd.graphviz']
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version_added = '2.8'
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tokens = {
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'root': [
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(r'\s+', Whitespace),
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(r'(#|//).*?$', Comment.Single),
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(r'/(\\\n)?[*](.|\n)*?[*](\\\n)?/', Comment.Multiline),
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(r'(?i)(node|edge|graph|digraph|subgraph|strict)\b', Keyword),
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(r'--|->', Operator),
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(r'[{}[\]:;,]', Punctuation),
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(r'(\b\D\w*)(\s*)(=)(\s*)',
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bygroups(Name.Attribute, Whitespace, Punctuation, Whitespace),
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'attr_id'),
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(r'\b(n|ne|e|se|s|sw|w|nw|c|_)\b', Name.Builtin),
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(r'\b\D\w*', Name.Tag), # node
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(r'[-]?((\.[0-9]+)|([0-9]+(\.[0-9]*)?))', Number),
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(r'"(\\"|[^"])*?"', Name.Tag), # quoted node
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(r'<', Punctuation, 'xml'),
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],
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'attr_id': [
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(r'\b\D\w*', String, '#pop'),
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(r'[-]?((\.[0-9]+)|([0-9]+(\.[0-9]*)?))', Number, '#pop'),
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(r'"(\\"|[^"])*?"', String.Double, '#pop'),
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(r'<', Punctuation, ('#pop', 'xml')),
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],
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'xml': [
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(r'<', Punctuation, '#push'),
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(r'>', Punctuation, '#pop'),
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(r'\s+', Whitespace),
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(r'[^<>\s]', Name.Tag),
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]
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}
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