1from pygments.lexer import RegexLexer
 2from pygments.token import *
 3
 4"""
 5    pygments.lexers.rnc
 6    ~~~~~~~~~~~~~~~~~~~
 7
 8    Lexer for Relax-NG Compact syntax
 9
10    :copyright: Copyright 2011 by the Pygments team, see AUTHORS.
11    :license: BSD, see LICENSE for details.
12"""
13
14import re
15import copy
16
17from pygments.lexer import RegexLexer, ExtendedRegexLexer, bygroups, using, \
18     include, this
19from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
20     Number, Other, Punctuation, Literal
21from pygments.util import get_bool_opt, get_list_opt, looks_like_xml, \
22                          html_doctype_matches
23from pygments.lexers.agile import RubyLexer
24from pygments.lexers.compiled import ScalaLexer
25
26
27__all__ = ['RNCCompactLexer']
28
29class RNCCompactLexer(RegexLexer):
30    name = 'Relax-NG Compact'
31    aliases = ['rnc', 'rng-compact']
32    filenames = ['*.rnc']
33
34    tokens = {
35        'root': [
36            (r'namespace', Keyword.Namespace),
37            (r'(default|datatypes)', Keyword.Declaration),
38            (r'##.*$', Comment.Preproc),
39            (r'#.*$', Comment.Single),
40            (r'"[^"]*"', String.Double),
41            (r'(element|attribute)', Keyword.Declaration, 'variable'),
42            (r'(text|xsd:[^ ]+)', Keyword.Type, 'maybe_xsdattributes'),
43            (r'[,?&*=|]', Operator),
44            (r'[(){}]', Punctuation),
45            (r'.', Text),
46            ],
47
48        # a variable has been declared using `element` or `attribute`
49        'variable': [
50            (r'[^{]+', Name.Variable),
51            (r'\{', Punctuation, '#pop'),
52            ],
53
54        # after an xsd:<datatype> declaration there may be attributes
55        'maybe_xsdattributes': [
56            (r'\{', Punctuation, 'xsdattributes'),
57            (r'\}', Punctuation, '#pop'),
58            (r'.', Text),
59            ],
60
61        # attributes take the form { key1 = value1 key2 = value2 ... }
62        'xsdattributes': [
63            (r'[^ =}]', Name.Attribute),
64            (r'=', Operator),
65            (r'"[^"]*"', String.Double),
66            (r'\}', Punctuation, '#pop'),
67            (r'.', Text),
68            ]
69    }