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Diffstat (limited to 'pygments/lexers/forth.py')
| -rw-r--r-- | pygments/lexers/forth.py | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/pygments/lexers/forth.py b/pygments/lexers/forth.py new file mode 100644 index 00000000..7fecdd52 --- /dev/null +++ b/pygments/lexers/forth.py @@ -0,0 +1,179 @@ +# -*- coding: utf-8 -*- +""" + pygments.lexers.forth + ~~~~~~~~~~~~~~~~~~~~~ + + Lexer for the Forth language. + + :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'), + ], + } |