eric6/ThirdParty/Pygments/pygments/lexers/css.py

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1 # -*- coding: utf-8 -*-
2 """
3 pygments.lexers.css
4 ~~~~~~~~~~~~~~~~~~~
5
6 Lexers for CSS and related stylesheet formats.
7
8 :copyright: Copyright 2006-2017 by the Pygments team, see AUTHORS.
9 :license: BSD, see LICENSE for details.
10 """
11
12 import re
13 import copy
14
15 from pygments.lexer import ExtendedRegexLexer, RegexLexer, include, bygroups, \
16 default, words, inherit
17 from pygments.token import Text, Comment, Operator, Keyword, Name, String, \
18 Number, Punctuation
19 from pygments.util import iteritems
20
21 __all__ = ['CssLexer', 'SassLexer', 'ScssLexer', 'LessCssLexer']
22
23
24 # List of vendor prefixes obtained from:
25 # https://www.w3.org/TR/CSS21/syndata.html#vendor-keyword-history
26 _vendor_prefixes = (
27 '-ms-', 'mso-', '-moz-', '-o-', '-xv-', '-atsc-', '-wap-', '-khtml-',
28 '-webkit-', 'prince-', '-ah-', '-hp-', '-ro-', '-rim-', '-tc-',
29 )
30
31 # List of CSS properties obtained from:
32 # https://www.w3.org/Style/CSS/all-properties.en.html
33 # Note: handle --* separately
34 _css_properties = (
35 'align-content', 'align-items', 'align-self', 'alignment-baseline', 'all',
36 'animation', 'animation-delay', 'animation-direction',
37 'animation-duration', 'animation-fill-mode', 'animation-iteration-count',
38 'animation-name', 'animation-play-state', 'animation-timing-function',
39 'appearance', 'azimuth', 'backface-visibility', 'background',
40 'background-attachment', 'background-blend-mode', 'background-clip',
41 'background-color', 'background-image', 'background-origin',
42 'background-position', 'background-repeat', 'background-size',
43 'baseline-shift', 'bookmark-label', 'bookmark-level', 'bookmark-state',
44 'border', 'border-bottom', 'border-bottom-color',
45 'border-bottom-left-radius', 'border-bottom-right-radius',
46 'border-bottom-style', 'border-bottom-width', 'border-boundary',
47 'border-collapse', 'border-color', 'border-image', 'border-image-outset',
48 'border-image-repeat', 'border-image-slice', 'border-image-source',
49 'border-image-width', 'border-left', 'border-left-color',
50 'border-left-style', 'border-left-width', 'border-radius', 'border-right',
51 'border-right-color', 'border-right-style', 'border-right-width',
52 'border-spacing', 'border-style', 'border-top', 'border-top-color',
53 'border-top-left-radius', 'border-top-right-radius', 'border-top-style',
54 'border-top-width', 'border-width', 'bottom', 'box-decoration-break',
55 'box-shadow', 'box-sizing', 'box-snap', 'box-suppress', 'break-after',
56 'break-before', 'break-inside', 'caption-side', 'caret', 'caret-animation',
57 'caret-color', 'caret-shape', 'chains', 'clear', 'clip', 'clip-path',
58 'clip-rule', 'color', 'color-interpolation-filters', 'column-count',
59 'column-fill', 'column-gap', 'column-rule', 'column-rule-color',
60 'column-rule-style', 'column-rule-width', 'column-span', 'column-width',
61 'columns', 'content', 'counter-increment', 'counter-reset', 'counter-set',
62 'crop', 'cue', 'cue-after', 'cue-before', 'cursor', 'direction', 'display',
63 'dominant-baseline', 'elevation', 'empty-cells', 'filter', 'flex',
64 'flex-basis', 'flex-direction', 'flex-flow', 'flex-grow', 'flex-shrink',
65 'flex-wrap', 'float', 'float-defer', 'float-offset', 'float-reference',
66 'flood-color', 'flood-opacity', 'flow', 'flow-from', 'flow-into', 'font',
67 'font-family', 'font-feature-settings', 'font-kerning',
68 'font-language-override', 'font-size', 'font-size-adjust', 'font-stretch',
69 'font-style', 'font-synthesis', 'font-variant', 'font-variant-alternates',
70 'font-variant-caps', 'font-variant-east-asian', 'font-variant-ligatures',
71 'font-variant-numeric', 'font-variant-position', 'font-weight',
72 'footnote-display', 'footnote-policy', 'glyph-orientation-vertical',
73 'grid', 'grid-area', 'grid-auto-columns', 'grid-auto-flow',
74 'grid-auto-rows', 'grid-column', 'grid-column-end', 'grid-column-gap',
75 'grid-column-start', 'grid-gap', 'grid-row', 'grid-row-end',
76 'grid-row-gap', 'grid-row-start', 'grid-template', 'grid-template-areas',
77 'grid-template-columns', 'grid-template-rows', 'hanging-punctuation',
78 'height', 'hyphenate-character', 'hyphenate-limit-chars',
79 'hyphenate-limit-last', 'hyphenate-limit-lines', 'hyphenate-limit-zone',
80 'hyphens', 'image-orientation', 'image-resolution', 'initial-letter',
81 'initial-letter-align', 'initial-letter-wrap', 'isolation',
82 'justify-content', 'justify-items', 'justify-self', 'left',
83 'letter-spacing', 'lighting-color', 'line-break', 'line-grid',
84 'line-height', 'line-snap', 'list-style', 'list-style-image',
85 'list-style-position', 'list-style-type', 'margin', 'margin-bottom',
86 'margin-left', 'margin-right', 'margin-top', 'marker-side',
87 'marquee-direction', 'marquee-loop', 'marquee-speed', 'marquee-style',
88 'mask', 'mask-border', 'mask-border-mode', 'mask-border-outset',
89 'mask-border-repeat', 'mask-border-slice', 'mask-border-source',
90 'mask-border-width', 'mask-clip', 'mask-composite', 'mask-image',
91 'mask-mode', 'mask-origin', 'mask-position', 'mask-repeat', 'mask-size',
92 'mask-type', 'max-height', 'max-lines', 'max-width', 'min-height',
93 'min-width', 'mix-blend-mode', 'motion', 'motion-offset', 'motion-path',
94 'motion-rotation', 'move-to', 'nav-down', 'nav-left', 'nav-right',
95 'nav-up', 'object-fit', 'object-position', 'offset-after', 'offset-before',
96 'offset-end', 'offset-start', 'opacity', 'order', 'orphans', 'outline',
97 'outline-color', 'outline-offset', 'outline-style', 'outline-width',
98 'overflow', 'overflow-style', 'overflow-wrap', 'overflow-x', 'overflow-y',
99 'padding', 'padding-bottom', 'padding-left', 'padding-right', 'padding-top',
100 'page', 'page-break-after', 'page-break-before', 'page-break-inside',
101 'page-policy', 'pause', 'pause-after', 'pause-before', 'perspective',
102 'perspective-origin', 'pitch', 'pitch-range', 'play-during', 'polar-angle',
103 'polar-distance', 'position', 'presentation-level', 'quotes',
104 'region-fragment', 'resize', 'rest', 'rest-after', 'rest-before',
105 'richness', 'right', 'rotation', 'rotation-point', 'ruby-align',
106 'ruby-merge', 'ruby-position', 'running', 'scroll-snap-coordinate',
107 'scroll-snap-destination', 'scroll-snap-points-x', 'scroll-snap-points-y',
108 'scroll-snap-type', 'shape-image-threshold', 'shape-inside', 'shape-margin',
109 'shape-outside', 'size', 'speak', 'speak-as', 'speak-header',
110 'speak-numeral', 'speak-punctuation', 'speech-rate', 'stress', 'string-set',
111 'tab-size', 'table-layout', 'text-align', 'text-align-last',
112 'text-combine-upright', 'text-decoration', 'text-decoration-color',
113 'text-decoration-line', 'text-decoration-skip', 'text-decoration-style',
114 'text-emphasis', 'text-emphasis-color', 'text-emphasis-position',
115 'text-emphasis-style', 'text-indent', 'text-justify', 'text-orientation',
116 'text-overflow', 'text-shadow', 'text-space-collapse', 'text-space-trim',
117 'text-spacing', 'text-transform', 'text-underline-position', 'text-wrap',
118 'top', 'transform', 'transform-origin', 'transform-style', 'transition',
119 'transition-delay', 'transition-duration', 'transition-property',
120 'transition-timing-function', 'unicode-bidi', 'user-select',
121 'vertical-align', 'visibility', 'voice-balance', 'voice-duration',
122 'voice-family', 'voice-pitch', 'voice-range', 'voice-rate', 'voice-stress',
123 'voice-volume', 'volume', 'white-space', 'widows', 'width', 'will-change',
124 'word-break', 'word-spacing', 'word-wrap', 'wrap-after', 'wrap-before',
125 'wrap-flow', 'wrap-inside', 'wrap-through', 'writing-mode', 'z-index',
126 )
127
128 # List of keyword values obtained from:
129 # http://cssvalues.com/
130 _keyword_values = (
131 'absolute', 'alias', 'all', 'all-petite-caps', 'all-scroll',
132 'all-small-caps', 'allow-end', 'alpha', 'alternate', 'alternate-reverse',
133 'always', 'armenian', 'auto', 'avoid', 'avoid-column', 'avoid-page',
134 'backwards', 'balance', 'baseline', 'below', 'blink', 'block', 'bold',
135 'bolder', 'border-box', 'both', 'bottom', 'box-decoration', 'break-word',
136 'capitalize', 'cell', 'center', 'circle', 'clip', 'clone', 'close-quote',
137 'col-resize', 'collapse', 'color', 'color-burn', 'color-dodge', 'column',
138 'column-reverse', 'compact', 'condensed', 'contain', 'container',
139 'content-box', 'context-menu', 'copy', 'cover', 'crisp-edges', 'crosshair',
140 'currentColor', 'cursive', 'darken', 'dashed', 'decimal',
141 'decimal-leading-zero', 'default', 'descendants', 'difference', 'digits',
142 'disc', 'distribute', 'dot', 'dotted', 'double', 'double-circle', 'e-resize',
143 'each-line', 'ease', 'ease-in', 'ease-in-out', 'ease-out', 'edges',
144 'ellipsis', 'end', 'ew-resize', 'exclusion', 'expanded', 'extra-condensed',
145 'extra-expanded', 'fantasy', 'fill', 'fill-box', 'filled', 'first', 'fixed',
146 'flat', 'flex', 'flex-end', 'flex-start', 'flip', 'force-end', 'forwards',
147 'from-image', 'full-width', 'geometricPrecision', 'georgian', 'groove',
148 'hanging', 'hard-light', 'help', 'hidden', 'hide', 'horizontal', 'hue',
149 'icon', 'infinite', 'inherit', 'initial', 'ink', 'inline', 'inline-block',
150 'inline-flex', 'inline-table', 'inset', 'inside', 'inter-word', 'invert',
151 'isolate', 'italic', 'justify', 'large', 'larger', 'last', 'left',
152 'lighten', 'lighter', 'line-through', 'linear', 'list-item', 'local',
153 'loose', 'lower-alpha', 'lower-greek', 'lower-latin', 'lower-roman',
154 'lowercase', 'ltr', 'luminance', 'luminosity', 'mandatory', 'manipulation',
155 'manual', 'margin-box', 'match-parent', 'medium', 'mixed', 'monospace',
156 'move', 'multiply', 'n-resize', 'ne-resize', 'nesw-resize',
157 'no-close-quote', 'no-drop', 'no-open-quote', 'no-repeat', 'none', 'normal',
158 'not-allowed', 'nowrap', 'ns-resize', 'nw-resize', 'nwse-resize', 'objects',
159 'oblique', 'off', 'on', 'open', 'open-quote', 'optimizeLegibility',
160 'optimizeSpeed', 'outset', 'outside', 'over', 'overlay', 'overline',
161 'padding-box', 'page', 'pan-down', 'pan-left', 'pan-right', 'pan-up',
162 'pan-x', 'pan-y', 'paused', 'petite-caps', 'pixelated', 'pointer',
163 'preserve-3d', 'progress', 'proximity', 'relative', 'repeat',
164 'repeat no-repeat', 'repeat-x', 'repeat-y', 'reverse', 'ridge', 'right',
165 'round', 'row', 'row-resize', 'row-reverse', 'rtl', 'ruby', 'ruby-base',
166 'ruby-base-container', 'ruby-text', 'ruby-text-container', 'run-in',
167 'running', 's-resize', 'sans-serif', 'saturation', 'scale-down', 'screen',
168 'scroll', 'se-resize', 'semi-condensed', 'semi-expanded', 'separate',
169 'serif', 'sesame', 'show', 'sideways', 'sideways-left', 'sideways-right',
170 'slice', 'small', 'small-caps', 'smaller', 'smooth', 'snap', 'soft-light',
171 'solid', 'space', 'space-around', 'space-between', 'spaces', 'square',
172 'start', 'static', 'step-end', 'step-start', 'sticky', 'stretch', 'strict',
173 'stroke-box', 'style', 'sw-resize', 'table', 'table-caption', 'table-cell',
174 'table-column', 'table-column-group', 'table-footer-group',
175 'table-header-group', 'table-row', 'table-row-group', 'text', 'thick',
176 'thin', 'titling-caps', 'to', 'top', 'triangle', 'ultra-condensed',
177 'ultra-expanded', 'under', 'underline', 'unicase', 'unset', 'upper-alpha',
178 'upper-latin', 'upper-roman', 'uppercase', 'upright', 'use-glyph-orientation',
179 'vertical', 'vertical-text', 'view-box', 'visible', 'w-resize', 'wait',
180 'wavy', 'weight', 'weight style', 'wrap', 'wrap-reverse', 'x-large',
181 'x-small', 'xx-large', 'xx-small', 'zoom-in', 'zoom-out',
182 )
183
184 # List of extended color keywords obtained from:
185 # https://drafts.csswg.org/css-color/#named-colors
186 _color_keywords = (
187 'aliceblue', 'antiquewhite', 'aqua', 'aquamarine', 'azure', 'beige',
188 'bisque', 'black', 'blanchedalmond', 'blue', 'blueviolet', 'brown',
189 'burlywood', 'cadetblue', 'chartreuse', 'chocolate', 'coral',
190 'cornflowerblue', 'cornsilk', 'crimson', 'cyan', 'darkblue', 'darkcyan',
191 'darkgoldenrod', 'darkgray', 'darkgreen', 'darkgrey', 'darkkhaki',
192 'darkmagenta', 'darkolivegreen', 'darkorange', 'darkorchid', 'darkred',
193 'darksalmon', 'darkseagreen', 'darkslateblue', 'darkslategray',
194 'darkslategrey', 'darkturquoise', 'darkviolet', 'deeppink', 'deepskyblue',
195 'dimgray', 'dimgrey', 'dodgerblue', 'firebrick', 'floralwhite',
196 'forestgreen', 'fuchsia', 'gainsboro', 'ghostwhite', 'gold', 'goldenrod',
197 'gray', 'green', 'greenyellow', 'grey', 'honeydew', 'hotpink', 'indianred',
198 'indigo', 'ivory', 'khaki', 'lavender', 'lavenderblush', 'lawngreen',
199 'lemonchiffon', 'lightblue', 'lightcoral', 'lightcyan',
200 'lightgoldenrodyellow', 'lightgray', 'lightgreen', 'lightgrey',
201 'lightpink', 'lightsalmon', 'lightseagreen', 'lightskyblue',
202 'lightslategray', 'lightslategrey', 'lightsteelblue', 'lightyellow',
203 'lime', 'limegreen', 'linen', 'magenta', 'maroon', 'mediumaquamarine',
204 'mediumblue', 'mediumorchid', 'mediumpurple', 'mediumseagreen',
205 'mediumslateblue', 'mediumspringgreen', 'mediumturquoise',
206 'mediumvioletred', 'midnightblue', 'mintcream', 'mistyrose', 'moccasin',
207 'navajowhite', 'navy', 'oldlace', 'olive', 'olivedrab', 'orange',
208 'orangered', 'orchid', 'palegoldenrod', 'palegreen', 'paleturquoise',
209 'palevioletred', 'papayawhip', 'peachpuff', 'peru', 'pink', 'plum',
210 'powderblue', 'purple', 'rebeccapurple', 'red', 'rosybrown', 'royalblue',
211 'saddlebrown', 'salmon', 'sandybrown', 'seagreen', 'seashell', 'sienna',
212 'silver', 'skyblue', 'slateblue', 'slategray', 'slategrey', 'snow',
213 'springgreen', 'steelblue', 'tan', 'teal', 'thistle', 'tomato', 'turquoise',
214 'violet', 'wheat', 'white', 'whitesmoke', 'yellow', 'yellowgreen',
215 ) + ('transparent',)
216
217 # List of other keyword values from other sources:
218 _other_keyword_values = (
219 'above', 'aural', 'behind', 'bidi-override', 'center-left', 'center-right',
220 'cjk-ideographic', 'continuous', 'crop', 'cross', 'embed', 'far-left',
221 'far-right', 'fast', 'faster', 'hebrew', 'high', 'higher', 'hiragana',
222 'hiragana-iroha', 'katakana', 'katakana-iroha', 'landscape', 'left-side',
223 'leftwards', 'level', 'loud', 'low', 'lower', 'message-box', 'middle',
224 'mix', 'narrower', 'once', 'portrait', 'right-side', 'rightwards', 'silent',
225 'slow', 'slower', 'small-caption', 'soft', 'spell-out', 'status-bar',
226 'super', 'text-bottom', 'text-top', 'wider', 'x-fast', 'x-high', 'x-loud',
227 'x-low', 'x-soft', 'yes', 'pre', 'pre-wrap', 'pre-line',
228 )
229
230 # List of functional notation and function keyword values:
231 _functional_notation_keyword_values = (
232 'attr', 'blackness', 'blend', 'blenda', 'blur', 'brightness', 'calc',
233 'circle', 'color-mod', 'contrast', 'counter', 'cubic-bezier', 'device-cmyk',
234 'drop-shadow', 'ellipse', 'gray', 'grayscale', 'hsl', 'hsla', 'hue',
235 'hue-rotate', 'hwb', 'image', 'inset', 'invert', 'lightness',
236 'linear-gradient', 'matrix', 'matrix3d', 'opacity', 'perspective',
237 'polygon', 'radial-gradient', 'rect', 'repeating-linear-gradient',
238 'repeating-radial-gradient', 'rgb', 'rgba', 'rotate', 'rotate3d', 'rotateX',
239 'rotateY', 'rotateZ', 'saturate', 'saturation', 'scale', 'scale3d',
240 'scaleX', 'scaleY', 'scaleZ', 'sepia', 'shade', 'skewX', 'skewY', 'steps',
241 'tint', 'toggle', 'translate', 'translate3d', 'translateX', 'translateY',
242 'translateZ', 'whiteness',
243 )
244 # Note! Handle url(...) separately.
245
246 # List of units obtained from:
247 # https://www.w3.org/TR/css3-values/
248 _angle_units = (
249 'deg', 'grad', 'rad', 'turn',
250 )
251 _frequency_units = (
252 'Hz', 'kHz',
253 )
254 _length_units = (
255 'em', 'ex', 'ch', 'rem',
256 'vh', 'vw', 'vmin', 'vmax',
257 'px', 'mm', 'cm', 'in', 'pt', 'pc', 'q',
258 )
259 _resolution_units = (
260 'dpi', 'dpcm', 'dppx',
261 )
262 _time_units = (
263 's', 'ms',
264 )
265 _all_units = _angle_units + _frequency_units + _length_units + \
266 _resolution_units + _time_units
267
268
269 class CssLexer(RegexLexer):
270 """
271 For CSS (Cascading Style Sheets).
272 """
273
274 name = 'CSS'
275 aliases = ['css']
276 filenames = ['*.css']
277 mimetypes = ['text/css']
278
279 tokens = {
280 'root': [
281 include('basics'),
282 ],
283 'basics': [
284 (r'\s+', Text),
285 (r'/\*(?:.|\n)*?\*/', Comment),
286 (r'\{', Punctuation, 'content'),
287 (r'(\:{1,2})([\w-]+)', bygroups(Punctuation, Name.Decorator)),
288 (r'(\.)([\w-]+)', bygroups(Punctuation, Name.Class)),
289 (r'(\#)([\w-]+)', bygroups(Punctuation, Name.Namespace)),
290 (r'(@)([\w-]+)', bygroups(Punctuation, Keyword), 'atrule'),
291 (r'[\w-]+', Name.Tag),
292 (r'[~^*!%&$\[\]()<>|+=@:;,./?-]', Operator),
293 (r'"(\\\\|\\"|[^"])*"', String.Double),
294 (r"'(\\\\|\\'|[^'])*'", String.Single)
295 ],
296 'atrule': [
297 (r'\{', Punctuation, 'atcontent'),
298 (r';', Punctuation, '#pop'),
299 include('basics'),
300 ],
301 'atcontent': [
302 include('basics'),
303 (r'\}', Punctuation, '#pop:2'),
304 ],
305 'content': [
306 (r'\s+', Text),
307 (r'\}', Punctuation, '#pop'),
308 (r';', Punctuation),
309 (r'^@.*?$', Comment.Preproc),
310
311 (words(_vendor_prefixes,), Keyword.Pseudo),
312 (r'('+r'|'.join(_css_properties)+r')(\s*)(\:)',
313 bygroups(Keyword, Text, Punctuation), 'value-start'),
314 (r'([a-zA-Z_][\w-]*)(\s*)(\:)', bygroups(Name, Text, Punctuation),
315 'value-start'),
316
317 (r'/\*(?:.|\n)*?\*/', Comment),
318 ],
319 'value-start': [
320 (r'\s+', Text),
321 (words(_vendor_prefixes,), Name.Builtin.Pseudo),
322 include('urls'),
323 (r'('+r'|'.join(_functional_notation_keyword_values)+r')(\()',
324 bygroups(Name.Builtin, Punctuation), 'function-start'),
325 (r'([a-zA-Z_][\w-]+)(\()',
326 bygroups(Name.Function, Punctuation), 'function-start'),
327 (words(_keyword_values, suffix=r'\b'), Keyword.Constant),
328 (words(_other_keyword_values, suffix=r'\b'), Keyword.Constant),
329 (words(_color_keywords, suffix=r'\b'), Keyword.Constant),
330 # for transition-property etc.
331 (words(_css_properties, suffix=r'\b'), Keyword),
332 (r'\!important', Comment.Preproc),
333 (r'/\*(?:.|\n)*?\*/', Comment),
334
335 include('numeric-values'),
336
337 (r'[~^*!%&<>|+=@:./?-]+', Operator),
338 (r'[\[\](),]+', Punctuation),
339 (r'"(\\\\|\\"|[^"])*"', String.Double),
340 (r"'(\\\\|\\'|[^'])*'", String.Single),
341 (r'[a-zA-Z_][\w-]*', Name),
342 (r';', Punctuation, '#pop'),
343 (r'\}', Punctuation, '#pop:2'),
344 ],
345 'function-start': [
346 (r'\s+', Text),
347 include('urls'),
348 (words(_vendor_prefixes,), Keyword.Pseudo),
349 (words(_keyword_values, suffix=r'\b'), Keyword.Constant),
350 (words(_other_keyword_values, suffix=r'\b'), Keyword.Constant),
351 (words(_color_keywords, suffix=r'\b'), Keyword.Constant),
352
353 # function-start may be entered recursively
354 (r'(' + r'|'.join(_functional_notation_keyword_values) + r')(\()',
355 bygroups(Name.Builtin, Punctuation), 'function-start'),
356 (r'([a-zA-Z_][\w-]+)(\()',
357 bygroups(Name.Function, Punctuation), 'function-start'),
358
359 (r'/\*(?:.|\n)*?\*/', Comment),
360 include('numeric-values'),
361 (r'[*+/-]', Operator),
362 (r'[,]', Punctuation),
363 (r'"(\\\\|\\"|[^"])*"', String.Double),
364 (r"'(\\\\|\\'|[^'])*'", String.Single),
365 (r'[a-zA-Z_-]\w*', Name),
366 (r'\)', Punctuation, '#pop'),
367 ],
368 'urls': [
369 (r'(url)(\()(".*?")(\))', bygroups(Name.Builtin, Punctuation,
370 String.Double, Punctuation)),
371 (r"(url)(\()('.*?')(\))", bygroups(Name.Builtin, Punctuation,
372 String.Single, Punctuation)),
373 (r'(url)(\()(.*?)(\))', bygroups(Name.Builtin, Punctuation,
374 String.Other, Punctuation)),
375 ],
376 'numeric-values': [
377 (r'\#[a-zA-Z0-9]{1,6}', Number.Hex),
378 (r'[+\-]?[0-9]*[.][0-9]+', Number.Float, 'numeric-end'),
379 (r'[+\-]?[0-9]+', Number.Integer, 'numeric-end'),
380 ],
381 'numeric-end': [
382 (words(_all_units, suffix=r'\b'), Keyword.Type),
383 (r'%', Keyword.Type),
384 default('#pop'),
385 ],
386 }
387
388
389 common_sass_tokens = {
390 'value': [
391 (r'[ \t]+', Text),
392 (r'[!$][\w-]+', Name.Variable),
393 (r'url\(', String.Other, 'string-url'),
394 (r'[a-z_-][\w-]*(?=\()', Name.Function),
395 (words(_css_properties + (
396 'above', 'absolute', 'always', 'armenian', 'aural', 'auto', 'avoid', 'baseline',
397 'behind', 'below', 'bidi-override', 'blink', 'block', 'bold', 'bolder', 'both',
398 'capitalize', 'center-left', 'center-right', 'center', 'circle',
399 'cjk-ideographic', 'close-quote', 'collapse', 'condensed', 'continuous',
400 'crop', 'crosshair', 'cross', 'cursive', 'dashed', 'decimal-leading-zero',
401 'decimal', 'default', 'digits', 'disc', 'dotted', 'double', 'e-resize', 'embed',
402 'extra-condensed', 'extra-expanded', 'expanded', 'fantasy', 'far-left',
403 'far-right', 'faster', 'fast', 'fixed', 'georgian', 'groove', 'hebrew', 'help',
404 'hidden', 'hide', 'higher', 'high', 'hiragana-iroha', 'hiragana', 'icon',
405 'inherit', 'inline-table', 'inline', 'inset', 'inside', 'invert', 'italic',
406 'justify', 'katakana-iroha', 'katakana', 'landscape', 'larger', 'large',
407 'left-side', 'leftwards', 'level', 'lighter', 'line-through', 'list-item',
408 'loud', 'lower-alpha', 'lower-greek', 'lower-roman', 'lowercase', 'ltr',
409 'lower', 'low', 'medium', 'message-box', 'middle', 'mix', 'monospace',
410 'n-resize', 'narrower', 'ne-resize', 'no-close-quote', 'no-open-quote',
411 'no-repeat', 'none', 'normal', 'nowrap', 'nw-resize', 'oblique', 'once',
412 'open-quote', 'outset', 'outside', 'overline', 'pointer', 'portrait', 'px',
413 'relative', 'repeat-x', 'repeat-y', 'repeat', 'rgb', 'ridge', 'right-side',
414 'rightwards', 's-resize', 'sans-serif', 'scroll', 'se-resize',
415 'semi-condensed', 'semi-expanded', 'separate', 'serif', 'show', 'silent',
416 'slow', 'slower', 'small-caps', 'small-caption', 'smaller', 'soft', 'solid',
417 'spell-out', 'square', 'static', 'status-bar', 'super', 'sw-resize',
418 'table-caption', 'table-cell', 'table-column', 'table-column-group',
419 'table-footer-group', 'table-header-group', 'table-row',
420 'table-row-group', 'text', 'text-bottom', 'text-top', 'thick', 'thin',
421 'transparent', 'ultra-condensed', 'ultra-expanded', 'underline',
422 'upper-alpha', 'upper-latin', 'upper-roman', 'uppercase', 'url',
423 'visible', 'w-resize', 'wait', 'wider', 'x-fast', 'x-high', 'x-large', 'x-loud',
424 'x-low', 'x-small', 'x-soft', 'xx-large', 'xx-small', 'yes'), suffix=r'\b'),
425 Name.Constant),
426 (words(_color_keywords, suffix=r'\b'), Name.Entity),
427 (words((
428 'black', 'silver', 'gray', 'white', 'maroon', 'red', 'purple', 'fuchsia', 'green',
429 'lime', 'olive', 'yellow', 'navy', 'blue', 'teal', 'aqua'), suffix=r'\b'),
430 Name.Builtin),
431 (r'\!(important|default)', Name.Exception),
432 (r'(true|false)', Name.Pseudo),
433 (r'(and|or|not)', Operator.Word),
434 (r'/\*', Comment.Multiline, 'inline-comment'),
435 (r'//[^\n]*', Comment.Single),
436 (r'\#[a-z0-9]{1,6}', Number.Hex),
437 (r'(-?\d+)(\%|[a-z]+)?', bygroups(Number.Integer, Keyword.Type)),
438 (r'(-?\d*\.\d+)(\%|[a-z]+)?', bygroups(Number.Float, Keyword.Type)),
439 (r'#\{', String.Interpol, 'interpolation'),
440 (r'[~^*!&%<>|+=@:,./?-]+', Operator),
441 (r'[\[\]()]+', Punctuation),
442 (r'"', String.Double, 'string-double'),
443 (r"'", String.Single, 'string-single'),
444 (r'[a-z_-][\w-]*', Name),
445 ],
446
447 'interpolation': [
448 (r'\}', String.Interpol, '#pop'),
449 include('value'),
450 ],
451
452 'selector': [
453 (r'[ \t]+', Text),
454 (r'\:', Name.Decorator, 'pseudo-class'),
455 (r'\.', Name.Class, 'class'),
456 (r'\#', Name.Namespace, 'id'),
457 (r'[\w-]+', Name.Tag),
458 (r'#\{', String.Interpol, 'interpolation'),
459 (r'&', Keyword),
460 (r'[~^*!&\[\]()<>|+=@:;,./?-]', Operator),
461 (r'"', String.Double, 'string-double'),
462 (r"'", String.Single, 'string-single'),
463 ],
464
465 'string-double': [
466 (r'(\\.|#(?=[^\n{])|[^\n"#])+', String.Double),
467 (r'#\{', String.Interpol, 'interpolation'),
468 (r'"', String.Double, '#pop'),
469 ],
470
471 'string-single': [
472 (r"(\\.|#(?=[^\n{])|[^\n'#])+", String.Single),
473 (r'#\{', String.Interpol, 'interpolation'),
474 (r"'", String.Single, '#pop'),
475 ],
476
477 'string-url': [
478 (r'(\\#|#(?=[^\n{])|[^\n#)])+', String.Other),
479 (r'#\{', String.Interpol, 'interpolation'),
480 (r'\)', String.Other, '#pop'),
481 ],
482
483 'pseudo-class': [
484 (r'[\w-]+', Name.Decorator),
485 (r'#\{', String.Interpol, 'interpolation'),
486 default('#pop'),
487 ],
488
489 'class': [
490 (r'[\w-]+', Name.Class),
491 (r'#\{', String.Interpol, 'interpolation'),
492 default('#pop'),
493 ],
494
495 'id': [
496 (r'[\w-]+', Name.Namespace),
497 (r'#\{', String.Interpol, 'interpolation'),
498 default('#pop'),
499 ],
500
501 'for': [
502 (r'(from|to|through)', Operator.Word),
503 include('value'),
504 ],
505 }
506
507
508 def _indentation(lexer, match, ctx):
509 indentation = match.group(0)
510 yield match.start(), Text, indentation
511 ctx.last_indentation = indentation
512 ctx.pos = match.end()
513
514 if hasattr(ctx, 'block_state') and ctx.block_state and \
515 indentation.startswith(ctx.block_indentation) and \
516 indentation != ctx.block_indentation:
517 ctx.stack.append(ctx.block_state)
518 else:
519 ctx.block_state = None
520 ctx.block_indentation = None
521 ctx.stack.append('content')
522
523
524 def _starts_block(token, state):
525 def callback(lexer, match, ctx):
526 yield match.start(), token, match.group(0)
527
528 if hasattr(ctx, 'last_indentation'):
529 ctx.block_indentation = ctx.last_indentation
530 else:
531 ctx.block_indentation = ''
532
533 ctx.block_state = state
534 ctx.pos = match.end()
535
536 return callback
537
538
539 class SassLexer(ExtendedRegexLexer):
540 """
541 For Sass stylesheets.
542
543 .. versionadded:: 1.3
544 """
545
546 name = 'Sass'
547 aliases = ['sass']
548 filenames = ['*.sass']
549 mimetypes = ['text/x-sass']
550
551 flags = re.IGNORECASE | re.MULTILINE
552
553 tokens = {
554 'root': [
555 (r'[ \t]*\n', Text),
556 (r'[ \t]*', _indentation),
557 ],
558
559 'content': [
560 (r'//[^\n]*', _starts_block(Comment.Single, 'single-comment'),
561 'root'),
562 (r'/\*[^\n]*', _starts_block(Comment.Multiline, 'multi-comment'),
563 'root'),
564 (r'@import', Keyword, 'import'),
565 (r'@for', Keyword, 'for'),
566 (r'@(debug|warn|if|while)', Keyword, 'value'),
567 (r'(@mixin)( [\w-]+)', bygroups(Keyword, Name.Function), 'value'),
568 (r'(@include)( [\w-]+)', bygroups(Keyword, Name.Decorator), 'value'),
569 (r'@extend', Keyword, 'selector'),
570 (r'@[\w-]+', Keyword, 'selector'),
571 (r'=[\w-]+', Name.Function, 'value'),
572 (r'\+[\w-]+', Name.Decorator, 'value'),
573 (r'([!$][\w-]\w*)([ \t]*(?:(?:\|\|)?=|:))',
574 bygroups(Name.Variable, Operator), 'value'),
575 (r':', Name.Attribute, 'old-style-attr'),
576 (r'(?=.+?[=:]([^a-z]|$))', Name.Attribute, 'new-style-attr'),
577 default('selector'),
578 ],
579
580 'single-comment': [
581 (r'.+', Comment.Single),
582 (r'\n', Text, 'root'),
583 ],
584
585 'multi-comment': [
586 (r'.+', Comment.Multiline),
587 (r'\n', Text, 'root'),
588 ],
589
590 'import': [
591 (r'[ \t]+', Text),
592 (r'\S+', String),
593 (r'\n', Text, 'root'),
594 ],
595
596 'old-style-attr': [
597 (r'[^\s:="\[]+', Name.Attribute),
598 (r'#\{', String.Interpol, 'interpolation'),
599 (r'[ \t]*=', Operator, 'value'),
600 default('value'),
601 ],
602
603 'new-style-attr': [
604 (r'[^\s:="\[]+', Name.Attribute),
605 (r'#\{', String.Interpol, 'interpolation'),
606 (r'[ \t]*[=:]', Operator, 'value'),
607 ],
608
609 'inline-comment': [
610 (r"(\\#|#(?=[^\n{])|\*(?=[^\n/])|[^\n#*])+", Comment.Multiline),
611 (r'#\{', String.Interpol, 'interpolation'),
612 (r"\*/", Comment, '#pop'),
613 ],
614 }
615 for group, common in iteritems(common_sass_tokens):
616 tokens[group] = copy.copy(common)
617 tokens['value'].append((r'\n', Text, 'root'))
618 tokens['selector'].append((r'\n', Text, 'root'))
619
620
621 class ScssLexer(RegexLexer):
622 """
623 For SCSS stylesheets.
624 """
625
626 name = 'SCSS'
627 aliases = ['scss']
628 filenames = ['*.scss']
629 mimetypes = ['text/x-scss']
630
631 flags = re.IGNORECASE | re.DOTALL
632 tokens = {
633 'root': [
634 (r'\s+', Text),
635 (r'//.*?\n', Comment.Single),
636 (r'/\*.*?\*/', Comment.Multiline),
637 (r'@import', Keyword, 'value'),
638 (r'@for', Keyword, 'for'),
639 (r'@(debug|warn|if|while)', Keyword, 'value'),
640 (r'(@mixin)( [\w-]+)', bygroups(Keyword, Name.Function), 'value'),
641 (r'(@include)( [\w-]+)', bygroups(Keyword, Name.Decorator), 'value'),
642 (r'@extend', Keyword, 'selector'),
643 (r'(@media)(\s+)', bygroups(Keyword, Text), 'value'),
644 (r'@[\w-]+', Keyword, 'selector'),
645 (r'(\$[\w-]*\w)([ \t]*:)', bygroups(Name.Variable, Operator), 'value'),
646 # TODO: broken, and prone to infinite loops.
647 # (r'(?=[^;{}][;}])', Name.Attribute, 'attr'),
648 # (r'(?=[^;{}:]+:[^a-z])', Name.Attribute, 'attr'),
649 default('selector'),
650 ],
651
652 'attr': [
653 (r'[^\s:="\[]+', Name.Attribute),
654 (r'#\{', String.Interpol, 'interpolation'),
655 (r'[ \t]*:', Operator, 'value'),
656 default('#pop'),
657 ],
658
659 'inline-comment': [
660 (r"(\\#|#(?=[^{])|\*(?=[^/])|[^#*])+", Comment.Multiline),
661 (r'#\{', String.Interpol, 'interpolation'),
662 (r"\*/", Comment, '#pop'),
663 ],
664 }
665 for group, common in iteritems(common_sass_tokens):
666 tokens[group] = copy.copy(common)
667 tokens['value'].extend([(r'\n', Text), (r'[;{}]', Punctuation, '#pop')])
668 tokens['selector'].extend([(r'\n', Text), (r'[;{}]', Punctuation, '#pop')])
669
670
671 class LessCssLexer(CssLexer):
672 """
673 For `LESS <http://lesscss.org/>`_ styleshets.
674
675 .. versionadded:: 2.1
676 """
677
678 name = 'LessCss'
679 aliases = ['less']
680 filenames = ['*.less']
681 mimetypes = ['text/x-less-css']
682
683 tokens = {
684 'root': [
685 (r'@\w+', Name.Variable),
686 inherit,
687 ],
688 'content': [
689 (r'\{', Punctuation, '#push'),
690 inherit,
691 ],
692 }

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