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# -*- coding: utf-8 -*- #
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# frozen_string_literal: true
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module Rouge
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module Lexers
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class CSS < RegexLexer
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title "CSS"
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desc "Cascading Style Sheets, used to style web pages"
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tag 'css'
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filenames '*.css'
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mimetypes 'text/css'
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# Documentation: https://www.w3.org/TR/CSS21/syndata.html#characters
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identifier = /[\p{L}_-][\p{Word}\p{Cf}-]*/
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number = /-?(?:[0-9]+(\.[0-9]+)?|\.[0-9]+)/
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def self.attributes
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@attributes ||= Set.new %w(
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align-content align-items align-self alignment-adjust
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alignment-baseline all anchor-point animation
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animation-delay animation-direction animation-duration
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animation-fill-mode animation-iteration-count animation-name
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animation-play-state animation-timing-function appearance
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azimuth backface-visibility background background-attachment
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background-clip background-color background-image
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background-origin background-position background-repeat
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background-size baseline-shift binding bleed bookmark-label
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bookmark-level bookmark-state bookmark-target border
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border-bottom border-bottom-color border-bottom-left-radius
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border-bottom-right-radius border-bottom-style
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border-bottom-width border-collapse border-color
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border-image border-image-outset border-image-repeat
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border-image-slice border-image-source border-image-width
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border-left border-left-color border-left-style
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border-left-width border-radius border-right
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border-right-color border-right-style border-right-width
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border-spacing border-style border-top border-top-color
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border-top-left-radius border-top-right-radius
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border-top-style border-top-width border-width bottom
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box-align box-decoration-break box-direction box-flex
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box-flex-group box-lines box-ordinal-group box-orient
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box-pack box-shadow box-sizing break-after break-before
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break-inside caption-side clear clip clip-path
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clip-rule color color-profile columns column-count
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column-fill column-gap column-rule column-rule-color
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column-rule-style column-rule-width column-span
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column-width content counter-increment counter-reset
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crop cue cue-after cue-before cursor direction display
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dominant-baseline drop-initial-after-adjust
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drop-initial-after-align drop-initial-before-adjust
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drop-initial-before-align drop-initial-size
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drop-initial-value elevation empty-cells filter fit
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fit-position flex flex-basis flex-direction flex-flow
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flex-grow flex-shrink flex-wrap float float-offset
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font font-family font-feature-settings
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font-kerning font-language-override font-size
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font-size-adjust font-stretch font-style font-synthesis
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font-variant font-variant-alternates font-variant-caps
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font-variant-east-asian font-variant-ligatures
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font-variant-numeric font-variant-position font-weight
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grid-cell grid-column grid-column-align grid-column-sizing
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grid-column-span grid-columns grid-flow grid-row
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grid-row-align grid-row-sizing grid-row-span
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grid-rows grid-template hanging-punctuation height
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hyphenate-after hyphenate-before hyphenate-character
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hyphenate-lines hyphenate-resource hyphens icon
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image-orientation image-rendering image-resolution
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ime-mode inline-box-align justify-content
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left letter-spacing line-break line-height
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line-stacking line-stacking-ruby line-stacking-shift
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line-stacking-strategy list-style list-style-image
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list-style-position list-style-type margin
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margin-bottom margin-left margin-right margin-top
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mark marker-offset marks mark-after mark-before
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marquee-direction marquee-loop marquee-play-count
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marquee-speed marquee-style mask max-height max-width
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min-height min-width move-to nav-down
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nav-index nav-left nav-right nav-up object-fit
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object-position opacity order orphans outline
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outline-color outline-offset outline-style
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outline-width overflow overflow-style overflow-wrap
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overflow-x overflow-y padding padding-bottom
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padding-left padding-right padding-top
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page page-break-after page-break-before
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page-break-inside page-policy pause pause-after
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pause-before perspective perspective-origin
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phonemes pitch pitch-range play-during pointer-events
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position presentation-level punctuation-trim quotes
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rendering-intent resize rest rest-after rest-before
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richness right rotation rotation-point ruby-align
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ruby-overhang ruby-position ruby-span size speak
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speak-as speak-header speak-numeral speak-punctuation
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speech-rate src stress string-set
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tab-size table-layout target target-name
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target-new target-position text-align
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text-align-last text-combine-horizontal
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text-decoration text-decoration-color
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text-decoration-line text-decoration-skip
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text-decoration-style text-emphasis
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text-emphasis-color text-emphasis-position
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text-emphasis-style text-height text-indent
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text-justify text-orientation text-outline
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text-overflow text-rendering text-shadow
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text-space-collapse text-transform
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text-underline-position text-wrap top
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transform transform-origin transform-style
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transition transition-delay transition-duration
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transition-property transition-timing-function
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unicode-bidi vertical-align
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visibility voice-balance voice-duration
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voice-family voice-pitch voice-pitch-range
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voice-range voice-rate voice-stress voice-volume
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volume white-space widows width word-break
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word-spacing word-wrap writing-mode z-index
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)
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end
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def self.builtins
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@builtins ||= Set.new %w(
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above absolute always armenian aural auto avoid left bottom
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baseline behind below bidi-override blink block bold bolder
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both bottom capitalize center center-left center-right circle
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cjk-ideographic close-quote collapse condensed continuous crop
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cross crosshair cursive dashed decimal decimal-leading-zero
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default digits disc dotted double e-resize embed expanded
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extra-condensed extra-expanded fantasy far-left far-right fast
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faster fixed georgian groove hebrew help hidden hide high higher
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hiragana hiragana-iroha icon inherit inline inline-table inset
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inside invert italic justify katakana katakana-iroha landscape
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large larger left left-side leftwards level lighter line-through
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list-item loud low lower lower-alpha lower-greek lower-roman
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lowercase ltr medium message-box middle mix monospace n-resize
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narrower ne-resize no-close-quote no-open-quote no-repeat none
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normal nowrap nw-resize oblique once open-quote outset outside
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overline pointer portrait px relative repeat repeat-x repeat-y
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rgb ridge right right-side rightwards s-resize sans-serif scroll
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se-resize semi-condensed semi-expanded separate serif show
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silent slow slower small-caps small-caption smaller soft solid
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spell-out square static status-bar super sw-resize table-caption
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table-cell table-column table-column-group table-footer-group
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table-header-group table-row table-row-group text text-bottom
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text-top thick thin top transparent ultra-condensed
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ultra-expanded underline upper-alpha upper-latin upper-roman
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uppercase url visible w-resize wait wider x-fast x-high x-large
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x-loud x-low x-small x-soft xx-large xx-small yes
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)
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end
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def self.constants
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@constants ||= Set.new %w(
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indigo gold firebrick indianred yellow darkolivegreen
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darkseagreen mediumvioletred mediumorchid chartreuse
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mediumslateblue black springgreen crimson lightsalmon brown
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turquoise olivedrab cyan silver skyblue gray darkturquoise
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goldenrod darkgreen darkviolet darkgray lightpink teal
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darkmagenta lightgoldenrodyellow lavender yellowgreen thistle
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violet navy orchid blue ghostwhite honeydew cornflowerblue
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darkblue darkkhaki mediumpurple cornsilk red bisque slategray
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darkcyan khaki wheat deepskyblue darkred steelblue aliceblue
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gainsboro mediumturquoise floralwhite coral purple lightgrey
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lightcyan darksalmon beige azure lightsteelblue oldlace
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greenyellow royalblue lightseagreen mistyrose sienna lightcoral
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orangered navajowhite lime palegreen burlywood seashell
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mediumspringgreen fuchsia papayawhip blanchedalmond peru
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aquamarine white darkslategray ivory dodgerblue lemonchiffon
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chocolate orange forestgreen slateblue olive mintcream
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antiquewhite darkorange cadetblue moccasin limegreen saddlebrown
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darkslateblue lightskyblue deeppink plum aqua darkgoldenrod
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maroon sandybrown magenta tan rosybrown pink lightblue
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palevioletred mediumseagreen dimgray powderblue seagreen snow
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mediumblue midnightblue paleturquoise palegoldenrod whitesmoke
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darkorchid salmon lightslategray lawngreen lightgreen tomato
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hotpink lightyellow lavenderblush linen mediumaquamarine green
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blueviolet peachpuff
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)
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end
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# source: http://www.w3.org/TR/CSS21/syndata.html#vendor-keyword-history
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def self.vendor_prefixes
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@vendor_prefixes ||= Set.new %w(
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-ah- -atsc- -hp- -khtml- -moz- -ms- -o- -rim- -ro- -tc- -wap-
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-webkit- -xv- mso- prince-
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)
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end
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state :root do
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mixin :basics
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rule %r/{/, Punctuation, :stanza
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rule %r/:[:]?#{identifier}/, Name::Decorator
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rule %r/\.#{identifier}/, Name::Class
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rule %r/##{identifier}/, Name::Function
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rule %r/@#{identifier}/, Keyword, :at_rule
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rule identifier, Name::Tag
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rule %r([~^*!%&\[\]()<>|+=@:;,./?-]), Operator
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rule %r/"(\\\\|\\"|[^"])*"/, Str::Single
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rule %r/'(\\\\|\\'|[^'])*'/, Str::Double
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end
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state :value do
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mixin :basics
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rule %r/url\(.*?\)/, Str::Other
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rule %r/#[0-9a-f]{1,6}/i, Num # colors
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rule %r/#{number}(?:%|(?:em|px|pt|pc|in|mm|cm|ex|rem|ch|vw|vh|vmin|vmax|dpi|dpcm|dppx|deg|grad|rad|turn|s|ms|Hz|kHz)\b)?/, Num
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rule %r/[\[\]():\/.,]/, Punctuation
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rule %r/"(\\\\|\\"|[^"])*"/, Str::Single
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rule %r/'(\\\\|\\'|[^'])*'/, Str::Double
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rule(identifier) do |m|
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if self.class.constants.include? m[0]
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token Name::Constant
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elsif self.class.builtins.include? m[0]
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token Name::Builtin
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else
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token Name
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end
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end
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end
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state :at_rule do
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rule %r/{(?=\s*#{identifier}\s*:)/m, Punctuation, :at_stanza
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rule %r/{/, Punctuation, :at_body
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rule %r/;/, Punctuation, :pop!
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mixin :value
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end
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state :at_body do
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mixin :at_content
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mixin :root
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end
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state :at_stanza do
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mixin :at_content
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mixin :stanza
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end
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state :at_content do
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rule %r/}/ do
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token Punctuation
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pop! 2
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end
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end
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state :basics do
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rule %r/\s+/m, Text
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rule %r(/\*(?:.*?)\*/)m, Comment
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end
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state :stanza do
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mixin :basics
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rule %r/}/, Punctuation, :pop!
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rule %r/(#{identifier})(\s*)(:)/m do |m|
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name_tok = if self.class.attributes.include? m[1]
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Name::Label
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elsif self.class.vendor_prefixes.any? { |p| m[1].start_with?(p) }
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Name::Label
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else
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Name::Property
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end
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groups name_tok, Text, Punctuation
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push :stanza_value
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end
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end
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state :stanza_value do
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rule %r/;/, Punctuation, :pop!
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rule(/(?=})/) { pop! }
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rule %r/!\s*important\b/, Comment::Preproc
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rule %r/^@.*?$/, Comment::Preproc
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mixin :value
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end
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end
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end
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end
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