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""" pygments.lexers.graphviz ~~~~~~~~~~~~~~~~~~~~~~~~ Lexer for the DOT language (graphviz). :copyright: Copyright 2006-2022 by the Pygments team, see AUTHORS. :license: BSD, see LICENSE for details. """ from pygments.lexer import RegexLexer, bygroups from pygments.token import Comment, Keyword, Operator, Name, String, Number, \ Punctuation, Whitespace __all__ = ['GraphvizLexer'] class GraphvizLexer(RegexLexer): """ For graphviz DOT graph description language. .. versionadded:: 2.8 """ name = 'Graphviz' url = 'https://www.graphviz.org/doc/info/lang.html' aliases = ['graphviz', 'dot'] filenames = ['*.gv', '*.dot'] mimetypes = ['text/x-graphviz', 'text/vnd.graphviz'] tokens = { 'root': [ (r'\s+', Whitespace), (r'(#|//).*?$', Comment.Single), (r'/(\\\n)?[*](.|\n)*?[*](\\\n)?/', Comment.Multiline), (r'(?i)(node|edge|graph|digraph|subgraph|strict)\b', Keyword), (r'--|->', Operator), (r'[{}[\]:;,]', Punctuation), (r'(\b\D\w*)(\s*)(=)(\s*)', bygroups(Name.Attribute, Whitespace, Punctuation, Whitespace), 'attr_id'), (r'\b(n|ne|e|se|s|sw|w|nw|c|_)\b', Name.Builtin), (r'\b\D\w*', Name.Tag), # node (r'[-]?((\.[0-9]+)|([0-9]+(\.[0-9]*)?))', Number), (r'"(\\"|[^"])*?"', Name.Tag), # quoted node (r'<', Punctuation, 'xml'), ], 'attr_id': [ (r'\b\D\w*', String, '#pop'), (r'[-]?((\.[0-9]+)|([0-9]+(\.[0-9]*)?))', Number, '#pop'), (r'"(\\"|[^"])*?"', String.Double, '#pop'), (r'<', Punctuation, ('#pop', 'xml')), ], 'xml': [ (r'<', Punctuation, '#push'), (r'>', Punctuation, '#pop'), (r'\s+', Whitespace), (r'[^<>\s]', Name.Tag), ] }