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1"""
2 pygments.lexers.rebol
3 ~~~~~~~~~~~~~~~~~~~~~
5 Lexers for the REBOL and related languages.
7 :copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS.
8 :license: BSD, see LICENSE for details.
9"""
11import re
13from pygments.lexer import RegexLexer, bygroups
14from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
15 Number, Generic, Whitespace
17__all__ = ['RebolLexer', 'RedLexer']
20class RebolLexer(RegexLexer):
21 """
22 A REBOL lexer.
23 """
24 name = 'REBOL'
25 aliases = ['rebol']
26 filenames = ['*.r', '*.r3', '*.reb']
27 mimetypes = ['text/x-rebol']
28 url = 'http://www.rebol.com'
29 version_added = '1.1'
31 flags = re.IGNORECASE | re.MULTILINE
33 escape_re = r'(?:\^\([0-9a-f]{1,4}\)*)'
35 def word_callback(lexer, match):
36 word = match.group()
38 if re.match(".*:$", word):
39 yield match.start(), Generic.Subheading, word
40 elif re.match(
41 r'(native|alias|all|any|as-string|as-binary|bind|bound\?|case|'
42 r'catch|checksum|comment|debase|dehex|exclude|difference|disarm|'
43 r'either|else|enbase|foreach|remove-each|form|free|get|get-env|if|'
44 r'in|intersect|loop|minimum-of|maximum-of|mold|new-line|'
45 r'new-line\?|not|now|prin|print|reduce|compose|construct|repeat|'
46 r'reverse|save|script\?|set|shift|switch|throw|to-hex|trace|try|'
47 r'type\?|union|unique|unless|unprotect|unset|until|use|value\?|'
48 r'while|compress|decompress|secure|open|close|read|read-io|'
49 r'write-io|write|update|query|wait|input\?|exp|log-10|log-2|'
50 r'log-e|square-root|cosine|sine|tangent|arccosine|arcsine|'
51 r'arctangent|protect|lowercase|uppercase|entab|detab|connected\?|'
52 r'browse|launch|stats|get-modes|set-modes|to-local-file|'
53 r'to-rebol-file|encloak|decloak|create-link|do-browser|bind\?|'
54 r'hide|draw|show|size-text|textinfo|offset-to-caret|'
55 r'caret-to-offset|local-request-file|rgb-to-hsv|hsv-to-rgb|'
56 r'crypt-strength\?|dh-make-key|dh-generate-key|dh-compute-key|'
57 r'dsa-make-key|dsa-generate-key|dsa-make-signature|'
58 r'dsa-verify-signature|rsa-make-key|rsa-generate-key|'
59 r'rsa-encrypt)$', word):
60 yield match.start(), Name.Builtin, word
61 elif re.match(
62 r'(add|subtract|multiply|divide|remainder|power|and~|or~|xor~|'
63 r'minimum|maximum|negate|complement|absolute|random|head|tail|'
64 r'next|back|skip|at|pick|first|second|third|fourth|fifth|sixth|'
65 r'seventh|eighth|ninth|tenth|last|path|find|select|make|to|copy\*|'
66 r'insert|remove|change|poke|clear|trim|sort|min|max|abs|cp|'
67 r'copy)$', word):
68 yield match.start(), Name.Function, word
69 elif re.match(
70 r'(error|source|input|license|help|install|echo|Usage|with|func|'
71 r'throw-on-error|function|does|has|context|probe|\?\?|as-pair|'
72 r'mod|modulo|round|repend|about|set-net|append|join|rejoin|reform|'
73 r'remold|charset|array|replace|move|extract|forskip|forall|alter|'
74 r'first+|also|take|for|forever|dispatch|attempt|what-dir|'
75 r'change-dir|clean-path|list-dir|dirize|rename|split-path|delete|'
76 r'make-dir|delete-dir|in-dir|confirm|dump-obj|upgrade|what|'
77 r'build-tag|process-source|build-markup|decode-cgi|read-cgi|'
78 r'write-user|save-user|set-user-name|protect-system|parse-xml|'
79 r'cvs-date|cvs-version|do-boot|get-net-info|desktop|layout|'
80 r'scroll-para|get-face|alert|set-face|uninstall|unfocus|'
81 r'request-dir|center-face|do-events|net-error|decode-url|'
82 r'parse-header|parse-header-date|parse-email-addrs|import-email|'
83 r'send|build-attach-body|resend|show-popup|hide-popup|open-events|'
84 r'find-key-face|do-face|viewtop|confine|find-window|'
85 r'insert-event-func|remove-event-func|inform|dump-pane|dump-face|'
86 r'flag-face|deflag-face|clear-fields|read-net|vbug|path-thru|'
87 r'read-thru|load-thru|do-thru|launch-thru|load-image|'
88 r'request-download|do-face-alt|set-font|set-para|get-style|'
89 r'set-style|make-face|stylize|choose|hilight-text|hilight-all|'
90 r'unlight-text|focus|scroll-drag|clear-face|reset-face|scroll-face|'
91 r'resize-face|load-stock|load-stock-block|notify|request|flash|'
92 r'request-color|request-pass|request-text|request-list|'
93 r'request-date|request-file|dbug|editor|link-relative-path|'
94 r'emailer|parse-error)$', word):
95 yield match.start(), Keyword.Namespace, word
96 elif re.match(
97 r'(halt|quit|do|load|q|recycle|call|run|ask|parse|view|unview|'
98 r'return|exit|break)$', word):
99 yield match.start(), Name.Exception, word
100 elif re.match('REBOL$', word):
101 yield match.start(), Generic.Heading, word
102 elif re.match("to-.*", word):
103 yield match.start(), Keyword, word
104 elif re.match(r'(\+|-|\*|/|//|\*\*|and|or|xor|=\?|=|==|<>|<|>|<=|>=)$',
105 word):
106 yield match.start(), Operator, word
107 elif re.match(r".*\?$", word):
108 yield match.start(), Keyword, word
109 elif re.match(r".*\!$", word):
110 yield match.start(), Keyword.Type, word
111 elif re.match("'.*", word):
112 yield match.start(), Name.Variable.Instance, word # lit-word
113 elif re.match("#.*", word):
114 yield match.start(), Name.Label, word # issue
115 elif re.match("%.*", word):
116 yield match.start(), Name.Decorator, word # file
117 else:
118 yield match.start(), Name.Variable, word
120 tokens = {
121 'root': [
122 (r'\s+', Text),
123 (r'#"', String.Char, 'char'),
124 (r'#\{[0-9a-f]*\}', Number.Hex),
125 (r'2#\{', Number.Hex, 'bin2'),
126 (r'64#\{[0-9a-z+/=\s]*\}', Number.Hex),
127 (r'"', String, 'string'),
128 (r'\{', String, 'string2'),
129 (r';#+.*\n', Comment.Special),
130 (r';\*+.*\n', Comment.Preproc),
131 (r';.*\n', Comment),
132 (r'%"', Name.Decorator, 'stringFile'),
133 (r'%[^(^{")\s\[\]]+', Name.Decorator),
134 (r'[+-]?([a-z]{1,3})?\$\d+(\.\d+)?', Number.Float), # money
135 (r'[+-]?\d+\:\d+(\:\d+)?(\.\d+)?', String.Other), # time
136 (r'\d+[\-/][0-9a-z]+[\-/]\d+(\/\d+\:\d+((\:\d+)?'
137 r'([.\d+]?([+-]?\d+:\d+)?)?)?)?', String.Other), # date
138 (r'\d+(\.\d+)+\.\d+', Keyword.Constant), # tuple
139 (r'\d+X\d+', Keyword.Constant), # pair
140 (r'[+-]?\d+(\'\d+)?([.,]\d*)?E[+-]?\d+', Number.Float),
141 (r'[+-]?\d+(\'\d+)?[.,]\d*', Number.Float),
142 (r'[+-]?\d+(\'\d+)?', Number),
143 (r'[\[\]()]', Generic.Strong),
144 (r'[a-z]+[^(^{"\s:)]*://[^(^{"\s)]*', Name.Decorator), # url
145 (r'mailto:[^(^{"@\s)]+@[^(^{"@\s)]+', Name.Decorator), # url
146 (r'[^(^{"@\s)]+@[^(^{"@\s)]+', Name.Decorator), # email
147 (r'comment\s"', Comment, 'commentString1'),
148 (r'comment\s\{', Comment, 'commentString2'),
149 (r'comment\s\[', Comment, 'commentBlock'),
150 (r'comment\s[^(\s{"\[]+', Comment),
151 (r'/[^(^{")\s/[\]]*', Name.Attribute),
152 (r'([^(^{")\s/[\]]+)(?=[:({"\s/\[\]])', word_callback),
153 (r'<[\w:.-]*>', Name.Tag),
154 (r'<[^(<>\s")]+', Name.Tag, 'tag'),
155 (r'([^(^{")\s]+)', Text),
156 ],
157 'string': [
158 (r'[^(^")]+', String),
159 (escape_re, String.Escape),
160 (r'[(|)]+', String),
161 (r'\^.', String.Escape),
162 (r'"', String, '#pop'),
163 ],
164 'string2': [
165 (r'[^(^{})]+', String),
166 (escape_re, String.Escape),
167 (r'[(|)]+', String),
168 (r'\^.', String.Escape),
169 (r'\{', String, '#push'),
170 (r'\}', String, '#pop'),
171 ],
172 'stringFile': [
173 (r'[^(^")]+', Name.Decorator),
174 (escape_re, Name.Decorator),
175 (r'\^.', Name.Decorator),
176 (r'"', Name.Decorator, '#pop'),
177 ],
178 'char': [
179 (escape_re + '"', String.Char, '#pop'),
180 (r'\^."', String.Char, '#pop'),
181 (r'."', String.Char, '#pop'),
182 ],
183 'tag': [
184 (escape_re, Name.Tag),
185 (r'"', Name.Tag, 'tagString'),
186 (r'[^(<>\r\n")]+', Name.Tag),
187 (r'>', Name.Tag, '#pop'),
188 ],
189 'tagString': [
190 (r'[^(^")]+', Name.Tag),
191 (escape_re, Name.Tag),
192 (r'[(|)]+', Name.Tag),
193 (r'\^.', Name.Tag),
194 (r'"', Name.Tag, '#pop'),
195 ],
196 'tuple': [
197 (r'(\d+\.)+', Keyword.Constant),
198 (r'\d+', Keyword.Constant, '#pop'),
199 ],
200 'bin2': [
201 (r'\s+', Number.Hex),
202 (r'([01]\s*){8}', Number.Hex),
203 (r'\}', Number.Hex, '#pop'),
204 ],
205 'commentString1': [
206 (r'[^(^")]+', Comment),
207 (escape_re, Comment),
208 (r'[(|)]+', Comment),
209 (r'\^.', Comment),
210 (r'"', Comment, '#pop'),
211 ],
212 'commentString2': [
213 (r'[^(^{})]+', Comment),
214 (escape_re, Comment),
215 (r'[(|)]+', Comment),
216 (r'\^.', Comment),
217 (r'\{', Comment, '#push'),
218 (r'\}', Comment, '#pop'),
219 ],
220 'commentBlock': [
221 (r'\[', Comment, '#push'),
222 (r'\]', Comment, '#pop'),
223 (r'"', Comment, "commentString1"),
224 (r'\{', Comment, "commentString2"),
225 (r'[^(\[\]"{)]+', Comment),
226 ],
227 }
229 def analyse_text(text):
230 """
231 Check if code contains REBOL header and so it probably not R code
232 """
233 if re.match(r'^\s*REBOL\s*\[', text, re.IGNORECASE):
234 # The code starts with REBOL header
235 return 1.0
236 elif re.search(r'\s*REBOL\s*\[', text, re.IGNORECASE):
237 # The code contains REBOL header but also some text before it
238 return 0.5
241class RedLexer(RegexLexer):
242 """
243 A Red-language lexer.
244 """
245 name = 'Red'
246 aliases = ['red', 'red/system']
247 filenames = ['*.red', '*.reds']
248 mimetypes = ['text/x-red', 'text/x-red-system']
249 url = 'https://www.red-lang.org'
250 version_added = '2.0'
252 flags = re.IGNORECASE | re.MULTILINE
254 escape_re = r'(?:\^\([0-9a-f]{1,4}\)*)'
256 def word_callback(lexer, match):
257 word = match.group()
259 if re.match(".*:$", word):
260 yield match.start(), Generic.Subheading, word
261 elif re.match(r'(if|unless|either|any|all|while|until|loop|repeat|'
262 r'foreach|forall|func|function|does|has|switch|'
263 r'case|reduce|compose|get|set|print|prin|equal\?|'
264 r'not-equal\?|strict-equal\?|lesser\?|greater\?|lesser-or-equal\?|'
265 r'greater-or-equal\?|same\?|not|type\?|stats|'
266 r'bind|union|replace|charset|routine)$', word):
267 yield match.start(), Name.Builtin, word
268 elif re.match(r'(make|random|reflect|to|form|mold|absolute|add|divide|multiply|negate|'
269 r'power|remainder|round|subtract|even\?|odd\?|and~|complement|or~|xor~|'
270 r'append|at|back|change|clear|copy|find|head|head\?|index\?|insert|'
271 r'length\?|next|pick|poke|remove|reverse|select|sort|skip|swap|tail|tail\?|'
272 r'take|trim|create|close|delete|modify|open|open\?|query|read|rename|'
273 r'update|write)$', word):
274 yield match.start(), Name.Function, word
275 elif re.match(r'(yes|on|no|off|true|false|tab|cr|lf|newline|escape|slash|sp|space|null|'
276 r'none|crlf|dot|null-byte)$', word):
277 yield match.start(), Name.Builtin.Pseudo, word
278 elif re.match(r'(#system-global|#include|#enum|#define|#either|#if|#import|#export|'
279 r'#switch|#default|#get-definition)$', word):
280 yield match.start(), Keyword.Namespace, word
281 elif re.match(r'(system|halt|quit|quit-return|do|load|q|recycle|call|run|ask|parse|'
282 r'raise-error|return|exit|break|alias|push|pop|probe|\?\?|spec-of|body-of|'
283 r'quote|forever)$', word):
284 yield match.start(), Name.Exception, word
285 elif re.match(r'(action\?|block\?|char\?|datatype\?|file\?|function\?|get-path\?|zero\?|'
286 r'get-word\?|integer\?|issue\?|lit-path\?|lit-word\?|logic\?|native\?|'
287 r'op\?|paren\?|path\?|refinement\?|set-path\?|set-word\?|string\?|unset\?|'
288 r'any-struct\?|none\?|word\?|any-series\?)$', word):
289 yield match.start(), Keyword, word
290 elif re.match(r'(JNICALL|stdcall|cdecl|infix)$', word):
291 yield match.start(), Keyword.Namespace, word
292 elif re.match("to-.*", word):
293 yield match.start(), Keyword, word
294 elif re.match(r'(\+|-\*\*|-|\*\*|//|/|\*|and|or|xor|=\?|===|==|=|<>|<=|>=|'
295 r'<<<|>>>|<<|>>|<|>%)$', word):
296 yield match.start(), Operator, word
297 elif re.match(r".*\!$", word):
298 yield match.start(), Keyword.Type, word
299 elif re.match("'.*", word):
300 yield match.start(), Name.Variable.Instance, word # lit-word
301 elif re.match("#.*", word):
302 yield match.start(), Name.Label, word # issue
303 elif re.match("%.*", word):
304 yield match.start(), Name.Decorator, word # file
305 elif re.match(":.*", word):
306 yield match.start(), Generic.Subheading, word # get-word
307 else:
308 yield match.start(), Name.Variable, word
310 tokens = {
311 'root': [
312 (r'\s+', Text),
313 (r'#"', String.Char, 'char'),
314 (r'#\{[0-9a-f\s]*\}', Number.Hex),
315 (r'2#\{', Number.Hex, 'bin2'),
316 (r'64#\{[0-9a-z+/=\s]*\}', Number.Hex),
317 (r'([0-9a-f]+)(h)((\s)|(?=[\[\]{}"()]))',
318 bygroups(Number.Hex, Name.Variable, Whitespace)),
319 (r'"', String, 'string'),
320 (r'\{', String, 'string2'),
321 (r';#+.*\n', Comment.Special),
322 (r';\*+.*\n', Comment.Preproc),
323 (r';.*\n', Comment),
324 (r'%"', Name.Decorator, 'stringFile'),
325 (r'%[^(^{")\s\[\]]+', Name.Decorator),
326 (r'[+-]?([a-z]{1,3})?\$\d+(\.\d+)?', Number.Float), # money
327 (r'[+-]?\d+\:\d+(\:\d+)?(\.\d+)?', String.Other), # time
328 (r'\d+[\-/][0-9a-z]+[\-/]\d+(/\d+:\d+((:\d+)?'
329 r'([\.\d+]?([+-]?\d+:\d+)?)?)?)?', String.Other), # date
330 (r'\d+(\.\d+)+\.\d+', Keyword.Constant), # tuple
331 (r'\d+X\d+', Keyword.Constant), # pair
332 (r'[+-]?\d+(\'\d+)?([.,]\d*)?E[+-]?\d+', Number.Float),
333 (r'[+-]?\d+(\'\d+)?[.,]\d*', Number.Float),
334 (r'[+-]?\d+(\'\d+)?', Number),
335 (r'[\[\]()]', Generic.Strong),
336 (r'[a-z]+[^(^{"\s:)]*://[^(^{"\s)]*', Name.Decorator), # url
337 (r'mailto:[^(^{"@\s)]+@[^(^{"@\s)]+', Name.Decorator), # url
338 (r'[^(^{"@\s)]+@[^(^{"@\s)]+', Name.Decorator), # email
339 (r'comment\s"', Comment, 'commentString1'),
340 (r'comment\s\{', Comment, 'commentString2'),
341 (r'comment\s\[', Comment, 'commentBlock'),
342 (r'comment\s[^(\s{"\[]+', Comment),
343 (r'/[^(^{^")\s/[\]]*', Name.Attribute),
344 (r'([^(^{^")\s/[\]]+)(?=[:({"\s/\[\]])', word_callback),
345 (r'<[\w:.-]*>', Name.Tag),
346 (r'<[^(<>\s")]+', Name.Tag, 'tag'),
347 (r'([^(^{")\s]+)', Text),
348 ],
349 'string': [
350 (r'[^(^")]+', String),
351 (escape_re, String.Escape),
352 (r'[(|)]+', String),
353 (r'\^.', String.Escape),
354 (r'"', String, '#pop'),
355 ],
356 'string2': [
357 (r'[^(^{})]+', String),
358 (escape_re, String.Escape),
359 (r'[(|)]+', String),
360 (r'\^.', String.Escape),
361 (r'\{', String, '#push'),
362 (r'\}', String, '#pop'),
363 ],
364 'stringFile': [
365 (r'[^(^")]+', Name.Decorator),
366 (escape_re, Name.Decorator),
367 (r'\^.', Name.Decorator),
368 (r'"', Name.Decorator, '#pop'),
369 ],
370 'char': [
371 (escape_re + '"', String.Char, '#pop'),
372 (r'\^."', String.Char, '#pop'),
373 (r'."', String.Char, '#pop'),
374 ],
375 'tag': [
376 (escape_re, Name.Tag),
377 (r'"', Name.Tag, 'tagString'),
378 (r'[^(<>\r\n")]+', Name.Tag),
379 (r'>', Name.Tag, '#pop'),
380 ],
381 'tagString': [
382 (r'[^(^")]+', Name.Tag),
383 (escape_re, Name.Tag),
384 (r'[(|)]+', Name.Tag),
385 (r'\^.', Name.Tag),
386 (r'"', Name.Tag, '#pop'),
387 ],
388 'tuple': [
389 (r'(\d+\.)+', Keyword.Constant),
390 (r'\d+', Keyword.Constant, '#pop'),
391 ],
392 'bin2': [
393 (r'\s+', Number.Hex),
394 (r'([01]\s*){8}', Number.Hex),
395 (r'\}', Number.Hex, '#pop'),
396 ],
397 'commentString1': [
398 (r'[^(^")]+', Comment),
399 (escape_re, Comment),
400 (r'[(|)]+', Comment),
401 (r'\^.', Comment),
402 (r'"', Comment, '#pop'),
403 ],
404 'commentString2': [
405 (r'[^(^{})]+', Comment),
406 (escape_re, Comment),
407 (r'[(|)]+', Comment),
408 (r'\^.', Comment),
409 (r'\{', Comment, '#push'),
410 (r'\}', Comment, '#pop'),
411 ],
412 'commentBlock': [
413 (r'\[', Comment, '#push'),
414 (r'\]', Comment, '#pop'),
415 (r'"', Comment, "commentString1"),
416 (r'\{', Comment, "commentString2"),
417 (r'[^(\[\]"{)]+', Comment),
418 ],
419 }