/usr/lib/python2.7/dist-packages/pygments/lexers/forth.py is in python-pygments 2.2.0+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | # -*- coding: utf-8 -*-
"""
pygments.lexers.forth
~~~~~~~~~~~~~~~~~~~~~
:copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import RegexLexer, include, bygroups
from pygments.token import Error, Punctuation, Literal, Token, \
Text, Comment, Operator, Keyword, Name, String, Number, Generic
__all__ = ['ForthLexer']
class ForthLexer(RegexLexer):
"""
Lexer for Forth files.
.. versionadded:: 2.2
"""
name = 'Forth'
aliases = ['forth']
filenames = ['*.frt', '*.fs']
mimetypes = ['application/x-forth']
delimiter = r'\s'
delimiter_end = r'(?=[%s])' % delimiter
valid_name_chars = r'[^%s]' % delimiter
valid_name = r"%s+%s" % (valid_name_chars, delimiter_end)
flags = re.IGNORECASE | re.MULTILINE
tokens = {
'root': [
(r'\s+', Text),
# All comment types
(r'\\.*?\n', Comment.Single),
(r'\([\s].*?\)', Comment.Single),
# defining words. The next word is a new command name
(r'(:|variable|constant|value|buffer:)(\s+)',
bygroups(Keyword.Namespace, Text), 'worddef'),
# strings are rather simple
(r'([.sc]")(\s+?)', bygroups(String, Text), 'stringdef'),
# keywords from the various wordsets
# *** Wordset BLOCK
(r'(blk|block|buffer|evaluate|flush|load|save-buffers|update|'
# *** Wordset BLOCK-EXT
r'empty-buffers|list|refill|scr|thru|'
# *** Wordset CORE
r'\#s|\*\/mod|\+loop|\/mod|0<|0=|1\+|1-|2!|'
r'2\*|2\/|2@|2drop|2dup|2over|2swap|>body|'
r'>in|>number|>r|\?dup|abort|abort\"|abs|'
r'accept|align|aligned|allot|and|base|begin|'
r'bl|c!|c,|c@|cell\+|cells|char|char\+|'
r'chars|constant|count|cr|create|decimal|'
r'depth|do|does>|drop|dup|else|emit|environment\?|'
r'evaluate|execute|exit|fill|find|fm\/mod|'
r'here|hold|i|if|immediate|invert|j|key|'
r'leave|literal|loop|lshift|m\*|max|min|'
r'mod|move|negate|or|over|postpone|quit|'
r'r>|r@|recurse|repeat|rot|rshift|s\"|s>d|'
r'sign|sm\/rem|source|space|spaces|state|swap|'
r'then|type|u\.|u\<|um\*|um\/mod|unloop|until|'
r'variable|while|word|xor|\[char\]|\[\'\]|'
r'@|!|\#|<\#|\#>|:|;|\+|-|\*|\/|,|<|>|\|1\+|1-|\.|'
# *** Wordset CORE-EXT
r'\.r|0<>|'
r'0>|2>r|2r>|2r@|:noname|\?do|again|c\"|'
r'case|compile,|endcase|endof|erase|false|'
r'hex|marker|nip|of|pad|parse|pick|refill|'
r'restore-input|roll|save-input|source-id|to|'
r'true|tuck|u\.r|u>|unused|value|within|'
r'\[compile\]|'
# *** Wordset CORE-EXT-obsolescent
r'\#tib|convert|expect|query|span|'
r'tib|'
# *** Wordset DOUBLE
r'2constant|2literal|2variable|d\+|d-|'
r'd\.|d\.r|d0<|d0=|d2\*|d2\/|d<|d=|d>s|'
r'dabs|dmax|dmin|dnegate|m\*\/|m\+|'
# *** Wordset DOUBLE-EXT
r'2rot|du<|'
# *** Wordset EXCEPTION
r'catch|throw|'
# *** Wordset EXCEPTION-EXT
r'abort|abort\"|'
# *** Wordset FACILITY
r'at-xy|key\?|page|'
# *** Wordset FACILITY-EXT
r'ekey|ekey>char|ekey\?|emit\?|ms|time&date|'
# *** Wordset FILE
r'BIN|CLOSE-FILE|CREATE-FILE|DELETE-FILE|FILE-POSITION|'
r'FILE-SIZE|INCLUDE-FILE|INCLUDED|OPEN-FILE|R\/O|'
r'R\/W|READ-FILE|READ-LINE|REPOSITION-FILE|RESIZE-FILE|'
r'S\"|SOURCE-ID|W/O|WRITE-FILE|WRITE-LINE|'
# *** Wordset FILE-EXT
r'FILE-STATUS|FLUSH-FILE|REFILL|RENAME-FILE|'
# *** Wordset FLOAT
r'>float|d>f|'
r'f!|f\*|f\+|f-|f\/|f0<|f0=|f<|f>d|f@|'
r'falign|faligned|fconstant|fdepth|fdrop|fdup|'
r'fliteral|float\+|floats|floor|fmax|fmin|'
r'fnegate|fover|frot|fround|fswap|fvariable|'
r'represent|'
# *** Wordset FLOAT-EXT
r'df!|df@|dfalign|dfaligned|dfloat\+|'
r'dfloats|f\*\*|f\.|fabs|facos|facosh|falog|'
r'fasin|fasinh|fatan|fatan2|fatanh|fcos|fcosh|'
r'fe\.|fexp|fexpm1|fln|flnp1|flog|fs\.|fsin|'
r'fsincos|fsinh|fsqrt|ftan|ftanh|f~|precision|'
r'set-precision|sf!|sf@|sfalign|sfaligned|sfloat\+|'
r'sfloats|'
# *** Wordset LOCAL
r'\(local\)|to|'
# *** Wordset LOCAL-EXT
r'locals\||'
# *** Wordset MEMORY
r'allocate|free|resize|'
# *** Wordset SEARCH
r'definitions|find|forth-wordlist|get-current|'
r'get-order|search-wordlist|set-current|set-order|'
r'wordlist|'
# *** Wordset SEARCH-EXT
r'also|forth|only|order|previous|'
# *** Wordset STRING
r'-trailing|\/string|blank|cmove|cmove>|compare|'
r'search|sliteral|'
# *** Wordset TOOLS
r'.s|dump|see|words|'
# *** Wordset TOOLS-EXT
r';code|'
r'ahead|assembler|bye|code|cs-pick|cs-roll|'
r'editor|state|\[else\]|\[if\]|\[then\]|'
# *** Wordset TOOLS-EXT-obsolescent
r'forget|'
# Forth 2012
r'defer|defer@|defer!|action-of|begin-structure|field:|buffer:|'
r'parse-name|buffer:|traverse-wordlist|n>r|nr>|2value|fvalue|'
r'name>interpret|name>compile|name>string|'
r'cfield:|end-structure)'+delimiter, Keyword),
# Numbers
(r'(\$[0-9A-F]+)', Number.Hex),
(r'(\#|%|&|\-|\+)?[0-9]+', Number.Integer),
(r'(\#|%|&|\-|\+)?[0-9.]+', Keyword.Type),
# amforth specific
(r'(@i|!i|@e|!e|pause|noop|turnkey|sleep|'
r'itype|icompare|sp@|sp!|rp@|rp!|up@|up!|'
r'>a|a>|a@|a!|a@+|a@-|>b|b>|b@|b!|b@+|b@-|'
r'find-name|1ms|'
r'sp0|rp0|\(evaluate\)|int-trap|int!)' + delimiter,
Name.Constant),
# a proposal
(r'(do-recognizer|r:fail|recognizer:|get-recognizers|'
r'set-recognizers|r:float|r>comp|r>int|r>post|'
r'r:name|r:word|r:dnum|r:num|recognizer|forth-recognizer|'
r'rec:num|rec:float|rec:word)' + delimiter, Name.Decorator),
# defining words. The next word is a new command name
(r'(Evalue|Rvalue|Uvalue|Edefer|Rdefer|Udefer)(\s+)',
bygroups(Keyword.Namespace, Text), 'worddef'),
(valid_name, Name.Function), # Anything else is executed
],
'worddef': [
(r'\S+', Name.Class, '#pop'),
],
'stringdef': [
(r'[^"]+', String, '#pop'),
],
}
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