codekingpro/portable-devtools

1"""2    pygments.lexers.css3    ~~~~~~~~~~~~~~~~~~~4 5    Lexers for CSS and related stylesheet formats.6 7    :copyright: Copyright 2006-present by the Pygments team, see AUTHORS.8    :license: BSD, see LICENSE for details.9"""10 11import re12import copy13 14from pygments.lexer import ExtendedRegexLexer, RegexLexer, include, bygroups, \15    default, words, inherit16from pygments.token import Comment, Operator, Keyword, Name, String, Number, \17    Punctuation, Whitespace18from pygments.lexers._css_builtins import _css_properties19 20__all__ = ['CssLexer', 'SassLexer', 'ScssLexer', 'LessCssLexer']21 22 23# List of vendor prefixes obtained from:24# https://www.w3.org/TR/CSS21/syndata.html#vendor-keyword-history25_vendor_prefixes = (26    '-ms-', 'mso-', '-moz-', '-o-', '-xv-', '-atsc-', '-wap-', '-khtml-',27    '-webkit-', 'prince-', '-ah-', '-hp-', '-ro-', '-rim-', '-tc-',28)29 30# List of extended color keywords obtained from:31# https://drafts.csswg.org/css-color/#named-colors32_color_keywords = (33    'aliceblue', 'antiquewhite', 'aqua', 'aquamarine', 'azure', 'beige',34    'bisque', 'black', 'blanchedalmond', 'blue', 'blueviolet', 'brown',35    'burlywood', 'cadetblue', 'chartreuse', 'chocolate', 'coral',36    'cornflowerblue', 'cornsilk', 'crimson', 'cyan', 'darkblue', 'darkcyan',37    'darkgoldenrod', 'darkgray', 'darkgreen', 'darkgrey', 'darkkhaki',38    'darkmagenta', 'darkolivegreen', 'darkorange', 'darkorchid', 'darkred',39    'darksalmon', 'darkseagreen', 'darkslateblue', 'darkslategray',40    'darkslategrey', 'darkturquoise', 'darkviolet', 'deeppink', 'deepskyblue',41    'dimgray', 'dimgrey', 'dodgerblue', 'firebrick', 'floralwhite',42    'forestgreen', 'fuchsia', 'gainsboro', 'ghostwhite', 'gold', 'goldenrod',43    'gray', 'green', 'greenyellow', 'grey', 'honeydew', 'hotpink', 'indianred',44    'indigo', 'ivory', 'khaki', 'lavender', 'lavenderblush', 'lawngreen',45    'lemonchiffon', 'lightblue', 'lightcoral', 'lightcyan',46    'lightgoldenrodyellow', 'lightgray', 'lightgreen', 'lightgrey',47    'lightpink', 'lightsalmon', 'lightseagreen', 'lightskyblue',48    'lightslategray', 'lightslategrey', 'lightsteelblue', 'lightyellow',49    'lime', 'limegreen', 'linen', 'magenta', 'maroon', 'mediumaquamarine',50    'mediumblue', 'mediumorchid', 'mediumpurple', 'mediumseagreen',51    'mediumslateblue', 'mediumspringgreen', 'mediumturquoise',52    'mediumvioletred', 'midnightblue', 'mintcream', 'mistyrose', 'moccasin',53    'navajowhite', 'navy', 'oldlace', 'olive', 'olivedrab', 'orange',54    'orangered', 'orchid', 'palegoldenrod', 'palegreen', 'paleturquoise',55    'palevioletred', 'papayawhip', 'peachpuff', 'peru', 'pink', 'plum',56    'powderblue', 'purple', 'rebeccapurple', 'red', 'rosybrown', 'royalblue',57    'saddlebrown', 'salmon', 'sandybrown', 'seagreen', 'seashell', 'sienna',58    'silver', 'skyblue', 'slateblue', 'slategray', 'slategrey', 'snow',59    'springgreen', 'steelblue', 'tan', 'teal', 'thistle', 'tomato', 'turquoise',60    'violet', 'wheat', 'white', 'whitesmoke', 'yellow', 'yellowgreen',61) + ('transparent',)62 63# List of keyword values obtained from:64# http://cssvalues.com/65_keyword_values = (66    'absolute', 'alias', 'all', 'all-petite-caps', 'all-scroll',67    'all-small-caps', 'allow-end', 'alpha', 'alternate', 'alternate-reverse',68    'always', 'armenian', 'auto', 'avoid', 'avoid-column', 'avoid-page',69    'backwards', 'balance', 'baseline', 'below', 'blink', 'block', 'bold',70    'bolder', 'border-box', 'both', 'bottom', 'box-decoration', 'break-word',71    'capitalize', 'cell', 'center', 'circle', 'clip', 'clone', 'close-quote',72    'col-resize', 'collapse', 'color', 'color-burn', 'color-dodge', 'column',73    'column-reverse', 'compact', 'condensed', 'contain', 'container',74    'content-box', 'context-menu', 'copy', 'cover', 'crisp-edges', 'crosshair',75    'currentColor', 'cursive', 'darken', 'dashed', 'decimal',76    'decimal-leading-zero', 'default', 'descendants', 'difference', 'digits',77    'disc', 'distribute', 'dot', 'dotted', 'double', 'double-circle', 'e-resize',78    'each-line', 'ease', 'ease-in', 'ease-in-out', 'ease-out', 'edges',79    'ellipsis', 'end', 'ew-resize', 'exclusion', 'expanded', 'extra-condensed',80    'extra-expanded', 'fantasy', 'fill', 'fill-box', 'filled', 'first', 'fixed',81    'flat', 'flex', 'flex-end', 'flex-start', 'flip', 'force-end', 'forwards',82    'from-image', 'full-width', 'geometricPrecision', 'georgian', 'groove',83    'hanging', 'hard-light', 'help', 'hidden', 'hide', 'horizontal', 'hue',84    'icon', 'infinite', 'inherit', 'initial', 'ink', 'inline', 'inline-block',85    'inline-flex', 'inline-table', 'inset', 'inside', 'inter-word', 'invert',86    'isolate', 'italic', 'justify', 'large', 'larger', 'last', 'left',87    'lighten', 'lighter', 'line-through', 'linear', 'list-item', 'local',88    'loose', 'lower-alpha', 'lower-greek', 'lower-latin', 'lower-roman',89    'lowercase', 'ltr', 'luminance', 'luminosity', 'mandatory', 'manipulation',90    'manual', 'margin-box', 'match-parent', 'medium', 'mixed', 'monospace',91    'move', 'multiply', 'n-resize', 'ne-resize', 'nesw-resize',92    'no-close-quote', 'no-drop', 'no-open-quote', 'no-repeat', 'none', 'normal',93    'not-allowed', 'nowrap', 'ns-resize', 'nw-resize', 'nwse-resize', 'objects',94    'oblique', 'off', 'on', 'open', 'open-quote', 'optimizeLegibility',95    'optimizeSpeed', 'outset', 'outside', 'over', 'overlay', 'overline',96    'padding-box', 'page', 'pan-down', 'pan-left', 'pan-right', 'pan-up',97    'pan-x', 'pan-y', 'paused', 'petite-caps', 'pixelated', 'pointer',98    'preserve-3d', 'progress', 'proximity', 'relative', 'repeat',99    'repeat no-repeat', 'repeat-x', 'repeat-y', 'reverse', 'revert', 'ridge', 'right',100    'round', 'row', 'row-resize', 'row-reverse', 'rtl', 'ruby', 'ruby-base',101    'ruby-base-container', 'ruby-text', 'ruby-text-container', 'run-in',102    'running', 's-resize', 'sans-serif', 'saturation', 'scale-down', 'screen',103    'scroll', 'se-resize', 'semi-condensed', 'semi-expanded', 'separate',104    'serif', 'sesame', 'show', 'sideways', 'sideways-left', 'sideways-right',105    'slice', 'small', 'small-caps', 'smaller', 'smooth', 'snap', 'soft-light',106    'solid', 'space', 'space-around', 'space-between', 'spaces', 'square',107    'start', 'static', 'step-end', 'step-start', 'sticky', 'stretch', 'strict',108    'stroke-box', 'style', 'sw-resize', 'table', 'table-caption', 'table-cell',109    'table-column', 'table-column-group', 'table-footer-group',110    'table-header-group', 'table-row', 'table-row-group', 'text', 'thick',111    'thin', 'titling-caps', 'to', 'top', 'triangle', 'ultra-condensed',112    'ultra-expanded', 'under', 'underline', 'unicase', 'unset', 'upper-alpha',113    'upper-latin', 'upper-roman', 'uppercase', 'upright', 'use-glyph-orientation',114    'vertical', 'vertical-text', 'view-box', 'visible', 'w-resize', 'wait',115    'wavy', 'weight', 'weight style', 'wrap', 'wrap-reverse', 'x-large',116    'x-small', 'xx-large', 'xx-small', 'zoom-in', 'zoom-out',117)118 119# List of other keyword values from other sources:120_other_keyword_values = (121    'above', 'aural', 'behind', 'bidi-override', 'center-left', 'center-right',122    'cjk-ideographic', 'continuous', 'crop', 'cross', 'embed', 'far-left',123    'far-right', 'fast', 'faster', 'hebrew', 'high', 'higher', 'hiragana',124    'hiragana-iroha', 'katakana', 'katakana-iroha', 'landscape', 'left-side',125    'leftwards', 'level', 'loud', 'low', 'lower', 'message-box', 'middle',126    'mix', 'narrower', 'once', 'portrait', 'right-side', 'rightwards', 'silent',127    'slow', 'slower', 'small-caption', 'soft', 'spell-out', 'status-bar',128    'super', 'text-bottom', 'text-top', 'wider', 'x-fast', 'x-high', 'x-loud',129    'x-low', 'x-soft', 'yes', 'pre', 'pre-wrap', 'pre-line',130)131 132# List of functional notation and function keyword values:133_functional_notation_keyword_values = (134    'attr', 'blackness', 'blend', 'blenda', 'blur', 'brightness', 'calc',135    'circle', 'color-mod', 'contrast', 'counter', 'cubic-bezier', 'device-cmyk',136    'drop-shadow', 'ellipse', 'gray', 'grayscale', 'hsl', 'hsla', 'hue',137    'hue-rotate', 'hwb', 'image', 'inset', 'invert', 'lightness',138    'linear-gradient', 'matrix', 'matrix3d', 'opacity', 'perspective',139    'polygon', 'radial-gradient', 'rect', 'repeating-linear-gradient',140    'repeating-radial-gradient', 'rgb', 'rgba', 'rotate', 'rotate3d', 'rotateX',141    'rotateY', 'rotateZ', 'saturate', 'saturation', 'scale', 'scale3d',142    'scaleX', 'scaleY', 'scaleZ', 'sepia', 'shade', 'skewX', 'skewY', 'steps',143    'tint', 'toggle', 'translate', 'translate3d', 'translateX', 'translateY',144    'translateZ', 'whiteness',145)146# Note! Handle url(...) separately.147 148# List of units obtained from:149# https://www.w3.org/TR/css3-values/150_angle_units = (151    'deg', 'grad', 'rad', 'turn',152)153_frequency_units = (154    'Hz', 'kHz',155)156_length_units = (157    'em', 'ex', 'ch', 'rem',158    'vh', 'vw', 'vmin', 'vmax',159    'px', 'mm', 'cm', 'in', 'pt', 'pc', 'q',160)161_resolution_units = (162    'dpi', 'dpcm', 'dppx',163)164_time_units = (165    's', 'ms',166)167_all_units = _angle_units + _frequency_units + _length_units + \168    _resolution_units + _time_units169 170 171class CssLexer(RegexLexer):172    """173    For CSS (Cascading Style Sheets).174    """175 176    name = 'CSS'177    url = 'https://www.w3.org/TR/CSS/#css'178    aliases = ['css']179    filenames = ['*.css']180    mimetypes = ['text/css']181    version_added = ''182 183    tokens = {184        'root': [185            include('basics'),186        ],187        'basics': [188            (r'\s+', Whitespace),189            (r'/\*(?:.|\n)*?\*/', Comment),190            (r'\{', Punctuation, 'content'),191            (r'(\:{1,2})([\w-]+)', bygroups(Punctuation, Name.Decorator)),192            (r'(\.)([\w-]+)', bygroups(Punctuation, Name.Class)),193            (r'(\#)([\w-]+)', bygroups(Punctuation, Name.Namespace)),194            (r'(@)([\w-]+)', bygroups(Punctuation, Keyword), 'atrule'),195            (r'[\w-]+', Name.Tag),196            (r'[~^*!%&$\[\]()<>|+=@:;,./?-]', Operator),197            (r'"(\\\\|\\[^\\]|[^"\\])*"', String.Double),198            (r"'(\\\\|\\[^\\]|[^'\\])*'", String.Single),199        ],200        'atrule': [201            (r'\{', Punctuation, 'atcontent'),202            (r';', Punctuation, '#pop'),203            include('basics'),204        ],205        'atcontent': [206            include('basics'),207            (r'\}', Punctuation, '#pop:2'),208        ],209        'content': [210            (r'\s+', Whitespace),211            (r'\}', Punctuation, '#pop'),212            (r';', Punctuation),213            (r'^@.*?$', Comment.Preproc),214 215            (words(_vendor_prefixes,), Keyword.Pseudo),216            (r'('+r'|'.join(_css_properties)+r')(\s*)(\:)',217             bygroups(Keyword, Whitespace, Punctuation), 'value-start'),218            (r'([-]+[a-zA-Z_][\w-]*)(\s*)(\:)', bygroups(Name.Variable, Whitespace, Punctuation),219             'value-start'),220            (r'([a-zA-Z_][\w-]*)(\s*)(\:)', bygroups(Name, Whitespace, Punctuation),221             'value-start'),222 223            (r'/\*(?:.|\n)*?\*/', Comment),224        ],225        'value-start': [226            (r'\s+', Whitespace),227            (words(_vendor_prefixes,), Name.Builtin.Pseudo),228            include('urls'),229            (r'('+r'|'.join(_functional_notation_keyword_values)+r')(\()',230             bygroups(Name.Builtin, Punctuation), 'function-start'),231            (r'([a-zA-Z_][\w-]+)(\()',232             bygroups(Name.Function, Punctuation), 'function-start'),233            (words(_keyword_values, suffix=r'\b'), Keyword.Constant),234            (words(_other_keyword_values, suffix=r'\b'), Keyword.Constant),235            (words(_color_keywords, suffix=r'\b'), Keyword.Constant),236            # for transition-property etc.237            (words(_css_properties, suffix=r'\b'), Keyword),238            (r'\!important', Comment.Preproc),239            (r'/\*(?:.|\n)*?\*/', Comment),240 241            include('numeric-values'),242 243            (r'[~^*!%&<>|+=@:./?-]+', Operator),244            (r'[\[\](),]+', Punctuation),245            (r'"(\\\\|\\[^\\]|[^"\\])*"', String.Double),246            (r"'(\\\\|\\[^\\]|[^'\\])*'", String.Single),247            (r'[a-zA-Z_][\w-]*', Name),248            (r';', Punctuation, '#pop'),249            (r'\}', Punctuation, '#pop:2'),250        ],251        'function-start': [252            (r'\s+', Whitespace),253            (r'[-]+([A-Za-z][\w+]*[-]*)+', Name.Variable),254            include('urls'),255            (words(_vendor_prefixes,), Keyword.Pseudo),256            (words(_keyword_values, suffix=r'\b'), Keyword.Constant),257            (words(_other_keyword_values, suffix=r'\b'), Keyword.Constant),258            (words(_color_keywords, suffix=r'\b'), Keyword.Constant),259 260            # function-start may be entered recursively261            (r'(' + r'|'.join(_functional_notation_keyword_values) + r')(\()',262             bygroups(Name.Builtin, Punctuation), 'function-start'),263            (r'([a-zA-Z_][\w-]+)(\()',264             bygroups(Name.Function, Punctuation), 'function-start'),265 266            (r'/\*(?:.|\n)*?\*/', Comment),267            include('numeric-values'),268            (r'[*+/-]', Operator),269            (r',', Punctuation),270            (r'"(\\\\|\\[^\\]|[^"\\])*"', String.Double),271            (r"'(\\\\|\\[^\\]|[^'\\])*'", String.Single),272            (r'[a-zA-Z_-]\w*', Name),273            (r'\)', Punctuation, '#pop'),274        ],275        'urls': [276            (r'(url)(\()(".*?")(\))', bygroups(Name.Builtin, Punctuation,277                                               String.Double, Punctuation)),278            (r"(url)(\()('.*?')(\))", bygroups(Name.Builtin, Punctuation,279                                               String.Single, Punctuation)),280            (r'(url)(\()(.*?)(\))', bygroups(Name.Builtin, Punctuation,281                                             String.Other, Punctuation)),282        ],283        'numeric-values': [284            (r'\#[a-zA-Z0-9]{1,6}', Number.Hex),285            (r'[+\-]?[0-9]*[.][0-9]+', Number.Float, 'numeric-end'),286            (r'[+\-]?[0-9]+', Number.Integer, 'numeric-end'),287        ],288        'numeric-end': [289            (words(_all_units, suffix=r'\b'), Keyword.Type),290            (r'%', Keyword.Type),291            default('#pop'),292        ],293    }294 295 296common_sass_tokens = {297    'value': [298        (r'[ \t]+', Whitespace),299        (r'[!$][\w-]+', Name.Variable),300        (r'url\(', String.Other, 'string-url'),301        (r'[a-z_-][\w-]*(?=\()', Name.Function),302        (words(_css_properties + (303            'above', 'absolute', 'always', 'armenian', 'aural', 'auto', 'avoid', 'baseline',304            'behind', 'below', 'bidi-override', 'blink', 'block', 'bold', 'bolder', 'both',305            'capitalize', 'center-left', 'center-right', 'center', 'circle',306            'cjk-ideographic', 'close-quote', 'collapse', 'condensed', 'continuous',307            'crosshair', 'cross', 'cursive', 'dashed', 'decimal-leading-zero',308            'decimal', 'default', 'digits', 'disc', 'dotted', 'double', 'e-resize', 'embed',309            'extra-condensed', 'extra-expanded', 'expanded', 'fantasy', 'far-left',310            'far-right', 'faster', 'fast', 'fixed', 'georgian', 'groove', 'hebrew', 'help',311            'hidden', 'hide', 'higher', 'high', 'hiragana-iroha', 'hiragana', 'icon',312            'inherit', 'inline-table', 'inline', 'inset', 'inside', 'invert', 'italic',313            'justify', 'katakana-iroha', 'katakana', 'landscape', 'larger', 'large',314            'left-side', 'leftwards', 'level', 'lighter', 'line-through', 'list-item',315            'loud', 'lower-alpha', 'lower-greek', 'lower-roman', 'lowercase', 'ltr',316            'lower', 'low', 'medium', 'message-box', 'middle', 'mix', 'monospace',317            'n-resize', 'narrower', 'ne-resize', 'no-close-quote', 'no-open-quote',318            'no-repeat', 'none', 'normal', 'nowrap', 'nw-resize', 'oblique', 'once',319            'open-quote', 'outset', 'outside', 'overline', 'pointer', 'portrait', 'px',320            'relative', 'repeat-x', 'repeat-y', 'repeat', 'rgb', 'ridge', 'right-side',321            'rightwards', 's-resize', 'sans-serif', 'scroll', 'se-resize',322            'semi-condensed', 'semi-expanded', 'separate', 'serif', 'show', 'silent',323            'slow', 'slower', 'small-caps', 'small-caption', 'smaller', 'soft', 'solid',324            'spell-out', 'square', 'static', 'status-bar', 'super', 'sw-resize',325            'table-caption', 'table-cell', 'table-column', 'table-column-group',326            'table-footer-group', 'table-header-group', 'table-row',327            'table-row-group', 'text', 'text-bottom', 'text-top', 'thick', 'thin',328            'transparent', 'ultra-condensed', 'ultra-expanded', 'underline',329            'upper-alpha', 'upper-latin', 'upper-roman', 'uppercase', 'url',330            'visible', 'w-resize', 'wait', 'wider', 'x-fast', 'x-high', 'x-large', 'x-loud',331            'x-low', 'x-small', 'x-soft', 'xx-large', 'xx-small', 'yes'), suffix=r'\b'),332         Name.Constant),333        (words(_color_keywords, suffix=r'\b'), Name.Entity),334        (words((335            'black', 'silver', 'gray', 'white', 'maroon', 'red', 'purple', 'fuchsia', 'green',336            'lime', 'olive', 'yellow', 'navy', 'blue', 'teal', 'aqua'), suffix=r'\b'),337         Name.Builtin),338        (r'\!(important|default)', Name.Exception),339        (r'(true|false)', Name.Pseudo),340        (r'(and|or|not)', Operator.Word),341        (r'/\*', Comment.Multiline, 'inline-comment'),342        (r'//[^\n]*', Comment.Single),343        (r'\#[a-z0-9]{1,6}', Number.Hex),344        (r'(-?\d+)(\%|[a-z]+)?', bygroups(Number.Integer, Keyword.Type)),345        (r'(-?\d*\.\d+)(\%|[a-z]+)?', bygroups(Number.Float, Keyword.Type)),346        (r'#\{', String.Interpol, 'interpolation'),347        (r'[~^*!&%<>|+=@:,./?-]+', Operator),348        (r'[\[\]()]+', Punctuation),349        (r'"', String.Double, 'string-double'),350        (r"'", String.Single, 'string-single'),351        (r'[a-z_-][\w-]*', Name),352    ],353 354    'interpolation': [355        (r'\}', String.Interpol, '#pop'),356        include('value'),357    ],358 359    'selector': [360        (r'[ \t]+', Whitespace),361        (r'\:', Name.Decorator, 'pseudo-class'),362        (r'\.', Name.Class, 'class'),363        (r'\#', Name.Namespace, 'id'),364        (r'[\w-]+', Name.Tag),365        (r'#\{', String.Interpol, 'interpolation'),366        (r'&', Keyword),367        (r'[~^*!&\[\]()<>|+=@:;,./?-]', Operator),368        (r'"', String.Double, 'string-double'),369        (r"'", String.Single, 'string-single'),370    ],371 372    'string-double': [373        (r'(\\.|#(?=[^\n{])|[^\n"#])+', String.Double),374        (r'#\{', String.Interpol, 'interpolation'),375        (r'"', String.Double, '#pop'),376    ],377 378    'string-single': [379        (r"(\\.|#(?=[^\n{])|[^\n'#])+", String.Single),380        (r'#\{', String.Interpol, 'interpolation'),381        (r"'", String.Single, '#pop'),382    ],383 384    'string-url': [385        (r'(\\#|#(?=[^\n{])|[^\n#)])+', String.Other),386        (r'#\{', String.Interpol, 'interpolation'),387        (r'\)', String.Other, '#pop'),388    ],389 390    'pseudo-class': [391        (r'[\w-]+', Name.Decorator),392        (r'#\{', String.Interpol, 'interpolation'),393        default('#pop'),394    ],395 396    'class': [397        (r'[\w-]+', Name.Class),398        (r'#\{', String.Interpol, 'interpolation'),399        default('#pop'),400    ],401 402    'id': [403        (r'[\w-]+', Name.Namespace),404        (r'#\{', String.Interpol, 'interpolation'),405        default('#pop'),406    ],407 408    'for': [409        (r'(from|to|through)', Operator.Word),410        include('value'),411    ],412}413 414 415def _indentation(lexer, match, ctx):416    indentation = match.group(0)417    yield match.start(), Whitespace, indentation418    ctx.last_indentation = indentation419    ctx.pos = match.end()420 421    if hasattr(ctx, 'block_state') and ctx.block_state and \422            indentation.startswith(ctx.block_indentation) and \423            indentation != ctx.block_indentation:424        ctx.stack.append(ctx.block_state)425    else:426        ctx.block_state = None427        ctx.block_indentation = None428        ctx.stack.append('content')429 430 431def _starts_block(token, state):432    def callback(lexer, match, ctx):433        yield match.start(), token, match.group(0)434 435        if hasattr(ctx, 'last_indentation'):436            ctx.block_indentation = ctx.last_indentation437        else:438            ctx.block_indentation = ''439 440        ctx.block_state = state441        ctx.pos = match.end()442 443    return callback444 445 446class SassLexer(ExtendedRegexLexer):447    """448    For Sass stylesheets.449    """450 451    name = 'Sass'452    url = 'https://sass-lang.com/'453    aliases = ['sass']454    filenames = ['*.sass']455    mimetypes = ['text/x-sass']456    version_added = '1.3'457 458    flags = re.IGNORECASE | re.MULTILINE459 460    tokens = {461        'root': [462            (r'[ \t]*\n', Whitespace),463            (r'[ \t]*', _indentation),464        ],465 466        'content': [467            (r'//[^\n]*', _starts_block(Comment.Single, 'single-comment'),468             'root'),469            (r'/\*[^\n]*', _starts_block(Comment.Multiline, 'multi-comment'),470             'root'),471            (r'@import', Keyword, 'import'),472            (r'@for', Keyword, 'for'),473            (r'@(debug|warn|if|while)', Keyword, 'value'),474            (r'(@mixin)( )([\w-]+)', bygroups(Keyword, Whitespace, Name.Function), 'value'),475            (r'(@include)( )([\w-]+)', bygroups(Keyword, Whitespace, Name.Decorator), 'value'),476            (r'@extend', Keyword, 'selector'),477            (r'@[\w-]+', Keyword, 'selector'),478            (r'=[\w-]+', Name.Function, 'value'),479            (r'\+[\w-]+', Name.Decorator, 'value'),480            (r'([!$][\w-]\w*)([ \t]*(?:(?:\|\|)?=|:))',481             bygroups(Name.Variable, Operator), 'value'),482            (r':', Name.Attribute, 'old-style-attr'),483            (r'(?=.+?[=:]([^a-z]|$))', Name.Attribute, 'new-style-attr'),484            default('selector'),485        ],486 487        'single-comment': [488            (r'.+', Comment.Single),489            (r'\n', Whitespace, 'root'),490        ],491 492        'multi-comment': [493            (r'.+', Comment.Multiline),494            (r'\n', Whitespace, 'root'),495        ],496 497        'import': [498            (r'[ \t]+', Whitespace),499            (r'\S+', String),500            (r'\n', Whitespace, 'root'),501        ],502 503        'old-style-attr': [504            (r'[^\s:="\[]+', Name.Attribute),505            (r'#\{', String.Interpol, 'interpolation'),506            (r'([ \t]*)(=)', bygroups(Whitespace, Operator), 'value'),507            default('value'),508        ],509 510        'new-style-attr': [511            (r'[^\s:="\[]+', Name.Attribute),512            (r'#\{', String.Interpol, 'interpolation'),513            (r'([ \t]*)([=:])', bygroups(Whitespace, Operator), 'value'),514        ],515 516        'inline-comment': [517            (r"(\\#|#(?=[^\n{])|\*(?=[^\n/])|[^\n#*])+", Comment.Multiline),518            (r'#\{', String.Interpol, 'interpolation'),519            (r"\*/", Comment, '#pop'),520        ],521    }522    for group, common in common_sass_tokens.items():523        tokens[group] = copy.copy(common)524    tokens['value'].append((r'\n', Whitespace, 'root'))525    tokens['selector'].append((r'\n', Whitespace, 'root'))526 527 528class ScssLexer(RegexLexer):529    """530    For SCSS stylesheets.531    """532 533    name = 'SCSS'534    url = 'https://sass-lang.com/'535    aliases = ['scss']536    filenames = ['*.scss']537    mimetypes = ['text/x-scss']538    version_added = ''539 540    flags = re.IGNORECASE | re.DOTALL541    tokens = {542        'root': [543            (r'\s+', Whitespace),544            (r'//.*?\n', Comment.Single),545            (r'/\*.*?\*/', Comment.Multiline),546            (r'@import', Keyword, 'value'),547            (r'@for', Keyword, 'for'),548            (r'@(debug|warn|if|while)', Keyword, 'value'),549            (r'(@mixin)( [\w-]+)', bygroups(Keyword, Name.Function), 'value'),550            (r'(@include)( [\w-]+)', bygroups(Keyword, Name.Decorator), 'value'),551            (r'@extend', Keyword, 'selector'),552            (r'(@media)(\s+)', bygroups(Keyword, Whitespace), 'value'),553            (r'@[\w-]+', Keyword, 'selector'),554            (r'(\$[\w-]*\w)([ \t]*:)', bygroups(Name.Variable, Operator), 'value'),555            # TODO: broken, and prone to infinite loops.556            # (r'(?=[^;{}][;}])', Name.Attribute, 'attr'),557            # (r'(?=[^;{}:]+:[^a-z])', Name.Attribute, 'attr'),558            default('selector'),559        ],560 561        'attr': [562            (r'[^\s:="\[]+', Name.Attribute),563            (r'#\{', String.Interpol, 'interpolation'),564            (r'[ \t]*:', Operator, 'value'),565            default('#pop'),566        ],567 568        'inline-comment': [569            (r"(\\#|#(?=[^{])|\*(?=[^/])|[^#*])+", Comment.Multiline),570            (r'#\{', String.Interpol, 'interpolation'),571            (r"\*/", Comment, '#pop'),572        ],573    }574    for group, common in common_sass_tokens.items():575        tokens[group] = copy.copy(common)576    tokens['value'].extend([(r'\n', Whitespace), (r'[;{}]', Punctuation, '#pop')])577    tokens['selector'].extend([(r'\n', Whitespace), (r'[;{}]', Punctuation, '#pop')])578 579 580class LessCssLexer(CssLexer):581    """582    For LESS styleshets.583    """584 585    name = 'LessCss'586    url = 'http://lesscss.org/'587    aliases = ['less']588    filenames = ['*.less']589    mimetypes = ['text/x-less-css']590    version_added = '2.1'591 592    tokens = {593        # FIXME: It's not currently possible to simply do the following,594        #        as `include('basics')` doesn't take overrides into account:595        # 'basics': [596        #     (r'//.*\n', Comment.Single),597        #     (r'/\*(?:.|\n)*?\*/', Comment.Multiline),598        #     inherit,599        # ],600        'root': [601            (r'@\w+', Name.Variable),602            (r'//.*\n', Comment.Single),603            (r'/\*(?:.|\n)*?\*/', Comment.Multiline),604            inherit,605        ],606        'atcontent': [607            (r'//.*\n', Comment.Single),608            (r'/\*(?:.|\n)*?\*/', Comment.Multiline),609            inherit,610        ],611        'atrule': [612            (r'//.*\n', Comment.Single),613            (r'/\*(?:.|\n)*?\*/', Comment.Multiline),614            inherit,615        ],616        'content': [617            (r'\{', Punctuation, '#push'),618            (r'//.*\n', Comment.Single),619            (r'/\*(?:.|\n)*?\*/', Comment.Multiline),620            inherit,621        ],622        'value-start': [623            (r'//.*\n', Comment.Single),624            (r'/\*(?:.|\n)*?\*/', Comment.Multiline),625            inherit,626        ],627        'function-start': [628            (r'//.*\n', Comment.Single),629            (r'/\*(?:.|\n)*?\*/', Comment.Multiline),630            inherit,631        ],632    }633