ThirdParty/Pygments/pygments/lexers/tcl.py

changeset 4172
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child 4697
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4170:8bc578136279 4172:4f20dba37ab6
1 # -*- coding: utf-8 -*-
2 """
3 pygments.lexers.tcl
4 ~~~~~~~~~~~~~~~~~~~
5
6 Lexers for Tcl and related languages.
7
8 :copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
9 :license: BSD, see LICENSE for details.
10 """
11
12 from pygments.lexer import RegexLexer, include, words
13 from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
14 Number
15 from pygments.util import shebang_matches
16
17 __all__ = ['TclLexer']
18
19
20 class TclLexer(RegexLexer):
21 """
22 For Tcl source code.
23
24 .. versionadded:: 0.10
25 """
26
27 keyword_cmds_re = words((
28 'after', 'apply', 'array', 'break', 'catch', 'continue', 'elseif', 'else', 'error',
29 'eval', 'expr', 'for', 'foreach', 'global', 'if', 'namespace', 'proc', 'rename', 'return',
30 'set', 'switch', 'then', 'trace', 'unset', 'update', 'uplevel', 'upvar', 'variable',
31 'vwait', 'while'), prefix=r'\b', suffix=r'\b')
32
33 builtin_cmds_re = words((
34 'append', 'bgerror', 'binary', 'cd', 'chan', 'clock', 'close', 'concat', 'dde', 'dict',
35 'encoding', 'eof', 'exec', 'exit', 'fblocked', 'fconfigure', 'fcopy', 'file',
36 'fileevent', 'flush', 'format', 'gets', 'glob', 'history', 'http', 'incr', 'info', 'interp',
37 'join', 'lappend', 'lassign', 'lindex', 'linsert', 'list', 'llength', 'load', 'loadTk',
38 'lrange', 'lrepeat', 'lreplace', 'lreverse', 'lsearch', 'lset', 'lsort', 'mathfunc',
39 'mathop', 'memory', 'msgcat', 'open', 'package', 'pid', 'pkg::create', 'pkg_mkIndex',
40 'platform', 'platform::shell', 'puts', 'pwd', 're_syntax', 'read', 'refchan',
41 'regexp', 'registry', 'regsub', 'scan', 'seek', 'socket', 'source', 'split', 'string',
42 'subst', 'tell', 'time', 'tm', 'unknown', 'unload'), prefix=r'\b', suffix=r'\b')
43
44 name = 'Tcl'
45 aliases = ['tcl']
46 filenames = ['*.tcl', '*.rvt']
47 mimetypes = ['text/x-tcl', 'text/x-script.tcl', 'application/x-tcl']
48
49 def _gen_command_rules(keyword_cmds_re, builtin_cmds_re, context=""):
50 return [
51 (keyword_cmds_re, Keyword, 'params' + context),
52 (builtin_cmds_re, Name.Builtin, 'params' + context),
53 (r'([\w.-]+)', Name.Variable, 'params' + context),
54 (r'#', Comment, 'comment'),
55 ]
56
57 tokens = {
58 'root': [
59 include('command'),
60 include('basic'),
61 include('data'),
62 (r'\}', Keyword), # HACK: somehow we miscounted our braces
63 ],
64 'command': _gen_command_rules(keyword_cmds_re, builtin_cmds_re),
65 'command-in-brace': _gen_command_rules(keyword_cmds_re,
66 builtin_cmds_re,
67 "-in-brace"),
68 'command-in-bracket': _gen_command_rules(keyword_cmds_re,
69 builtin_cmds_re,
70 "-in-bracket"),
71 'command-in-paren': _gen_command_rules(keyword_cmds_re,
72 builtin_cmds_re,
73 "-in-paren"),
74 'basic': [
75 (r'\(', Keyword, 'paren'),
76 (r'\[', Keyword, 'bracket'),
77 (r'\{', Keyword, 'brace'),
78 (r'"', String.Double, 'string'),
79 (r'(eq|ne|in|ni)\b', Operator.Word),
80 (r'!=|==|<<|>>|<=|>=|&&|\|\||\*\*|[-+~!*/%<>&^|?:]', Operator),
81 ],
82 'data': [
83 (r'\s+', Text),
84 (r'0x[a-fA-F0-9]+', Number.Hex),
85 (r'0[0-7]+', Number.Oct),
86 (r'\d+\.\d+', Number.Float),
87 (r'\d+', Number.Integer),
88 (r'\$([\w.:-]+)', Name.Variable),
89 (r'([\w.:-]+)', Text),
90 ],
91 'params': [
92 (r';', Keyword, '#pop'),
93 (r'\n', Text, '#pop'),
94 (r'(else|elseif|then)\b', Keyword),
95 include('basic'),
96 include('data'),
97 ],
98 'params-in-brace': [
99 (r'\}', Keyword, ('#pop', '#pop')),
100 include('params')
101 ],
102 'params-in-paren': [
103 (r'\)', Keyword, ('#pop', '#pop')),
104 include('params')
105 ],
106 'params-in-bracket': [
107 (r'\]', Keyword, ('#pop', '#pop')),
108 include('params')
109 ],
110 'string': [
111 (r'\[', String.Double, 'string-square'),
112 (r'(?s)(\\\\|\\[0-7]+|\\.|[^"\\])', String.Double),
113 (r'"', String.Double, '#pop')
114 ],
115 'string-square': [
116 (r'\[', String.Double, 'string-square'),
117 (r'(?s)(\\\\|\\[0-7]+|\\.|\\\n|[^\]\\])', String.Double),
118 (r'\]', String.Double, '#pop')
119 ],
120 'brace': [
121 (r'\}', Keyword, '#pop'),
122 include('command-in-brace'),
123 include('basic'),
124 include('data'),
125 ],
126 'paren': [
127 (r'\)', Keyword, '#pop'),
128 include('command-in-paren'),
129 include('basic'),
130 include('data'),
131 ],
132 'bracket': [
133 (r'\]', Keyword, '#pop'),
134 include('command-in-bracket'),
135 include('basic'),
136 include('data'),
137 ],
138 'comment': [
139 (r'.*[^\\]\n', Comment, '#pop'),
140 (r'.*\\\n', Comment),
141 ],
142 }
143
144 def analyse_text(text):
145 return shebang_matches(text, r'(tcl)')

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