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"""
pygments.lexers.tcl
~~~~~~~~~~~~~~~~~~~
Lexers for Tcl and related languages.
:copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from pygments.lexer import RegexLexer, include, words
from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
Number, Whitespace
from pygments.util import shebang_matches
__all__ = ['TclLexer']
class TclLexer(RegexLexer):
"""
For Tcl source code.
.. versionadded:: 0.10
"""
keyword_cmds_re = words((
'after', 'apply', 'array', 'break', 'catch', 'continue', 'elseif', 'else', 'error',
'eval', 'expr', 'for', 'foreach', 'global', 'if', 'namespace', 'proc', 'rename', 'return',
'set', 'switch', 'then', 'trace', 'unset', 'update', 'uplevel', 'upvar', 'variable',
'vwait', 'while'), prefix=r'\b', suffix=r'\b')
builtin_cmds_re = words((
'append', 'bgerror', 'binary', 'cd', 'chan', 'clock', 'close', 'concat', 'dde', 'dict',
'encoding', 'eof', 'exec', 'exit', 'fblocked', 'fconfigure', 'fcopy', 'file',
'fileevent', 'flush', 'format', 'gets', 'glob', 'history', 'http', 'incr', 'info', 'interp',
'join', 'lappend', 'lassign', 'lindex', 'linsert', 'list', 'llength', 'load', 'loadTk',
'lrange', 'lrepeat', 'lreplace', 'lreverse', 'lsearch', 'lset', 'lsort', 'mathfunc',
'mathop', 'memory', 'msgcat', 'open', 'package', 'pid', 'pkg::create', 'pkg_mkIndex',
'platform', 'platform::shell', 'puts', 'pwd', 're_syntax', 'read', 'refchan',
'regexp', 'registry', 'regsub', 'scan', 'seek', 'socket', 'source', 'split', 'string',
'subst', 'tell', 'time', 'tm', 'unknown', 'unload'), prefix=r'\b', suffix=r'\b')
name = 'Tcl'
aliases = ['tcl']
filenames = ['*.tcl', '*.rvt']
mimetypes = ['text/x-tcl', 'text/x-script.tcl', 'application/x-tcl']
def _gen_command_rules(keyword_cmds_re, builtin_cmds_re, context=""):
return [
(keyword_cmds_re, Keyword, 'params' + context),
(builtin_cmds_re, Name.Builtin, 'params' + context),
(r'([\w.-]+)', Name.Variable, 'params' + context),
(r'#', Comment, 'comment'),
]
tokens = {
'root': [
include('command'),
include('basic'),
include('data'),
(r'\}', Keyword), # HACK: somehow we miscounted our braces
],
'command': _gen_command_rules(keyword_cmds_re, builtin_cmds_re),
'command-in-brace': _gen_command_rules(keyword_cmds_re,
builtin_cmds_re,
"-in-brace"),
'command-in-bracket': _gen_command_rules(keyword_cmds_re,
builtin_cmds_re,
"-in-bracket"),
'command-in-paren': _gen_command_rules(keyword_cmds_re,
builtin_cmds_re,
"-in-paren"),
'basic': [
(r'\(', Keyword, 'paren'),
(r'\[', Keyword, 'bracket'),
(r'\{', Keyword, 'brace'),
(r'"', String.Double, 'string'),
(r'(eq|ne|in|ni)\b', Operator.Word),
(r'!=|==|<<|>>|<=|>=|&&|\|\||\*\*|[-+~!*/%<>&^|?:]', Operator),
],
'data': [
(r'\s+', Whitespace),
(r'0x[a-fA-F0-9]+', Number.Hex),
(r'0[0-7]+', Number.Oct),
(r'\d+\.\d+', Number.Float),
(r'\d+', Number.Integer),
(r'\$([\w.:-]+)', Name.Variable),
(r'([\w.,@:-]+)', Text),
],
'params': [
(r';', Keyword, '#pop'),
(r'\n', Text, '#pop'),
(r'(else|elseif|then)\b', Keyword),
include('basic'),
include('data'),
],
'params-in-brace': [
(r'\}', Keyword, ('#pop', '#pop')),
include('params')
],
'params-in-paren': [
(r'\)', Keyword, ('#pop', '#pop')),
include('params')
],
'params-in-bracket': [
(r'\]', Keyword, ('#pop', '#pop')),
include('params')
],
'string': [
(r'\[', String.Double, 'string-square'),
(r'(?s)(\\\\|\\[0-7]+|\\.|[^"\\])', String.Double),
(r'"', String.Double, '#pop')
],
'string-square': [
(r'\[', String.Double, 'string-square'),
(r'(?s)(\\\\|\\[0-7]+|\\.|\\\n|[^\]\\])', String.Double),
(r'\]', String.Double, '#pop')
],
'brace': [
(r'\}', Keyword, '#pop'),
include('command-in-brace'),
include('basic'),
include('data'),
],
'paren': [
(r'\)', Keyword, '#pop'),
include('command-in-paren'),
include('basic'),
include('data'),
],
'bracket': [
(r'\]', Keyword, '#pop'),
include('command-in-bracket'),
include('basic'),
include('data'),
],
'comment': [
(r'.*[^\\]\n', Comment, '#pop'),
(r'.*\\\n', Comment),
],
}
def analyse_text(text):
return shebang_matches(text, r'(tcl)')
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