319 lines
16 KiB
Ruby
319 lines
16 KiB
Ruby
# -*- 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.properties
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@properties ||= Set.new %w(
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additive-symbols align-content align-items align-self
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alignment-adjust alignment-baseline all anchor-point animation
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animation-composition animation-delay animation-direction
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animation-duration animation-fill-mode animation-iteration-count
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animation-name animation-play-state animation-timing-function
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appearance aspect-ratio azimuth backface-visibility background
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background-attachment background-blend-mode
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background-clip background-color background-image
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background-origin background-position
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background-repeat background-size baseline-shift
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binding bleed bookmark-label bookmark-level bookmark-state
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bookmark-target border border-bottom border-bottom-color
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border-bottom-left-radius border-bottom-right-radius
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border-bottom-style border-bottom-width border-collapse
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border-color 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 border-left-width
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border-radius border-right border-right-color border-right-style
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border-right-width border-spacing border-style border-top
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border-top-color border-top-left-radius border-top-right-radius
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border-top-style border-top-width border-width bottom box-align
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box-decoration-break box-direction box-flex box-flex-group
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box-lines box-ordinal-group box-orient box-pack box-shadow
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box-sizing break-after break-before break-inside caption-side
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clear clip clip-path clip-rule color color-profile 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 column-width
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columns content container container-name container-type
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counter-increment counter-reset counter-set crop cue
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cue-after cue-before cursor direction display dominant-baseline
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drop-initial-after-adjust drop-initial-after-align
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drop-initial-before-adjust drop-initial-before-align
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drop-initial-size drop-initial-value elevation empty-cells fallback
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filter fit fit-position flex flex-basis flex-direction flex-flow
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flex-grow flex-shrink flex-wrap float float-offset font
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font-display font-family font-feature-settings font-kerning
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font-language-override font-size font-size-adjust font-stretch
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font-style font-synthesis font-variant font-variant-alternates
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font-variant-caps font-variant-east-asian font-variant-ligatures
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font-variant-numeric font-variant-position font-weight gap
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grid-area grid-auto-columns grid-auto-flow grid-auto-rows
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grid-column grid-column-end grid-column-start grid-row
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grid-row-end grid-row-start grid-template grid-template-areas
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grid-template-columns grid-template-rows hanging-punctuation
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height hyphenate-after hyphenate-before hyphenate-character
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hyphenate-lines hyphenate-resource hyphens icon image-orientation
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image-rendering image-resolution ime-mode inherits initial-value
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inline-box-align inset isolation justify-content justify-items
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justify-self 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 margin-bottom
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margin-left margin-right margin-top mark mark-after mark-before
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marker-offset marks marquee-direction marquee-loop
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marquee-play-count marquee-speed marquee-style
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mask mask-clip mask-composite mask-image mask-mode
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mask-origin mask-position mask-repeat mask-size mask-type
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max-height max-width min-height min-width mix-blend-mode
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move-to nav-down nav-index nav-left nav-right nav-up negative
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object-fit object-position offset offset-anchor offset-distance
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offset-path offset-position offset-rotate opacity order orphans
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outline outline-color outline-offset outline-style outline-width
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overflow overflow-style overflow-wrap overflow-x overflow-y pad
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padding padding-bottom padding-left padding-right padding-top page
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page-break-after page-break-before page-break-inside page-policy
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pause pause-after pause-before perspective perspective-origin
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phonemes pitch pitch-range place-content place-items place-self
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play-during pointer-events position prefix presentation-level
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punctuation-trim quotes range rendering-intent resize rest
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rest-after rest-before richness right rotate rotation rotation-point
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row-gap ruby-align ruby-overhang ruby-position ruby-span scale
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scroll-behavior scroll-margin scroll-margin-block
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scroll-margin-block-end scroll-margin-block-start
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scroll-margin-bottom scroll-margin-inline scroll-margin-inline-end
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scroll-margin-inline-start scroll-margin-left scroll-margin-right
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scroll-margin-top scroll-padding-top scroll-padding-right
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scroll-padding-bottom scroll-padding-left scroll-padding
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scroll-padding-block-end scroll-padding-block-start
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scroll-padding-block scroll-padding-inline-end
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scroll-padding-inline-start scroll-padding-inline
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scroll-snap-type scroll-snap-align scroll-snap-stop
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shape-outside shape-margin shape-image-threshold shape-rendering
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size speak speak-as speak-header speak-numeral speak-punctuation
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speech-rate src stress string-set suffix symbols syntax system
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tab-size table-layout target target-name target-new target-position
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text-align text-align-last text-combine-horizontal
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text-decoration text-decoration-color text-decoration-line
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text-decoration-skip text-decoration-style text-emphasis
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text-emphasis-color text-emphasis-position text-emphasis-style
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text-height text-indent text-justify text-orientation
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text-outline text-overflow text-rendering text-shadow
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text-space-collapse text-transform text-underline-position
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text-wrap top transform transform-origin transform-style
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transition transition-delay transition-duration
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transition-property transition-timing-function translate
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unicode-bidi vertical-align visibility voice-balance
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voice-duration voice-family voice-pitch voice-pitch-range
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voice-range voice-rate voice-stress voice-volume volume
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white-space widows width word-break word-spacing word-wrap
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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 accumulate add additive all alpha alphabetic
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alternate alternate-reverse always armenian aural auto auto-fill
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auto-fit avoid backwards balance baseline behind below bidi-override
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blink block bold bolder border-box both bottom bottom break-spaces
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capitalize center center-left center-right circle cjk-ideographic
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close-quote closest-corner closest-side collapse
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color color-burn color-dodge column column-reverse
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condensed contain content content-box continuous cover crop cross
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crosshair cursive cyclic darken dashed decimal decimal-leading-zero
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default difference digits disc dotted double e-resize
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ease ease-in ease-in-out ease-out embed end exclude exclusion
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expanded extends extra-condensed extra-expanded fantasy
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farthest-corner farthest-side far-left far-right
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fast faster fill fixed flat flex flex-end flex-start
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forwards georgian grid groove hard-light hebrew help hidden
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hide high higher hiragana hiragana-iroha horizontal hue icon
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infinite inherit inline inline-block inline-flex inline-grid
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inline-size inline-table inset inside intersect isolate italic
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justify katakana katakana-iroha landscape large larger left
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left-side leftwards level lighten lighter line-through linear
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list-item loud low lower lower-alpha lower-greek lower-roman
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lowercase ltr luminance luminosity mandatory match-source medium
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message-box middle mix monospace multiply n-resize narrower
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ne-resize no-close-quote no-open-quote no-repeat none normal
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nowrap numeric nw-resize oblique once open-quote outset outside
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overlay overline paused pointer portrait pre preserve-3d pre-line
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pre-wrap proximity px relative repeat-x repeat-y replace reverse
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ridge right right-side rightwards row row-reverse rtl running
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s-resize sans-serif saturation scale-down screen scroll
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se-resize semi-condensed semi-expanded separate serif show
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sides silent size slow slower small-caps small-caption smaller
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smooth soft soft-light solid space-around space-between
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space-evenly span spell-out square start static status-bar sticky
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stretch sub subtract super sw-resize swap symbolic table
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table-caption table-cell table-column table-column-group
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table-footer-group table-header-group table-row table-row-group
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text text-bottom text-top thick thin top transparent
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ultra-condensed ultra-expanded underline upper-alpha upper-latin
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upper-roman uppercase vertical visible w-resize wait wider wrap
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wrap-reverse x x-fast x-high x-large x-loud x-low x-small x-soft
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xx-large xx-small yes y z
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)
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end
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def self.colors
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@colors ||= Set.new %w(
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aliceblue antiquewhite aqua aquamarine azure beige bisque black
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blanchedalmond blue blueviolet brown burlywood cadetblue
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chartreuse chocolate coral cornflowerblue cornsilk crimson cyan
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darkblue darkcyan darkgoldenrod darkgray darkgreen darkkhaki
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darkmagenta darkolivegreen darkorange darkorchid darkred
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darksalmon darkseagreen darkslateblue darkslategray darkturquoise
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darkviolet deeppink deepskyblue dimgray dodgerblue firebrick
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floralwhite forestgreen fuchsia gainsboro ghostwhite gold
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goldenrod gray green greenyellow honeydew hotpink indianred
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indigo ivory khaki lavender lavenderblush lawngreen lemonchiffon
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lightblue lightcoral lightcyan lightgoldenrodyellow lightgreen
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lightgrey lightpink lightsalmon lightseagreen lightskyblue
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lightslategray lightsteelblue lightyellow lime limegreen linen
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magenta maroon mediumaquamarine mediumblue mediumorchid
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mediumpurple mediumseagreen mediumslateblue mediumspringgreen
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mediumturquoise mediumvioletred midnightblue mintcream mistyrose
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moccasin navajowhite navy oldlace olive olivedrab orange
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orangered orchid palegoldenrod palegreen paleturquoise
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palevioletred papayawhip peachpuff peru pink plum powderblue
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purple red rosybrown royalblue saddlebrown salmon sandybrown
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seagreen seashell sienna silver skyblue slateblue slategray snow
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springgreen steelblue tan teal thistle tomato
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turquoise violet wheat white whitesmoke yellow yellowgreen
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)
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end
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def self.functions
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@functions ||= Set.new %w(
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abs acos annotation asin atan atan2 attr blur brightness calc
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character-variant circle clamp color color-mix conic-gradient
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contrast cos counter counters cubic-bezier drop-shadow ellipse
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env exp fit-content format grayscale hsl hsla hue-rotate hwb hypot
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image-set inset invert lab lch linear linear-gradient log matrix
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matrix3d max min minmax mod oklab oklch opacity ornaments path
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perspective polygon pow radial-gradient ray rect rem repeat
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repeating-conic-gradient repeating-linear-gradient
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repeating-radial-gradient rgb rgba rotate rotate3d rotatex
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rotatey rotatez round saturate scale scale3d scalex scaley scalez
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sepia sign sin skewx skewy sqrt steps styleset
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stylistic swash tan translate translate3d translatex translatey
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translatez url var xywh
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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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rule %r/[0-9]{1,3}\%/, Num
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end
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state :value do
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mixin :basics
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rule %r/#[0-9a-f]{3,8}/i, Name::Other # colors
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rule %r/#{number}(?:%|(?:px|pt|pc|in|cm|mm|Q|em|rem|ex|ch|vw|vh|vmin|vmax|fr|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 %r/(true|false)/i, Name::Constant
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rule %r/\-\-#{identifier}/, Literal
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rule %r([*+/-]), Operator
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rule(identifier) do |m|
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if self.class.colors.include? m[0].downcase
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token Name::Other
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elsif self.class.builtins.include? m[0].downcase
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token Name::Builtin
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elsif self.class.functions.include? m[0].downcase
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token Name::Function
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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/(?:<=|>=|~=|\|=|\^=|\$=|\*=|<|>|=)/, Operator
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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.properties.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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