66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
// @ts-nocheck
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/**
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* @import {Refractor} from '../lib/core.js'
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*/
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import refractorCss from './css.js'
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less.displayName = 'less'
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less.aliases = []
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/** @param {Refractor} Prism */
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export default function less(Prism) {
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Prism.register(refractorCss)
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/* FIXME :
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:extend() is not handled specifically : its highlighting is buggy.
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Mixin usage must be inside a ruleset to be highlighted.
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At-rules (e.g. import) containing interpolations are buggy.
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Detached rulesets are highlighted as at-rules.
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A comment before a mixin usage prevents the latter to be properly highlighted.
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*/
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Prism.languages.less = Prism.languages.extend('css', {
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comment: [
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/\/\*[\s\S]*?\*\//,
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{
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pattern: /(^|[^\\])\/\/.*/,
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lookbehind: true
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}
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],
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atrule: {
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pattern:
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/@[\w-](?:\((?:[^(){}]|\([^(){}]*\))*\)|[^(){};\s]|\s+(?!\s))*?(?=\s*\{)/,
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inside: {
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punctuation: /[:()]/
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}
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},
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// selectors and mixins are considered the same
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selector: {
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pattern:
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/(?:@\{[\w-]+\}|[^{};\s@])(?:@\{[\w-]+\}|\((?:[^(){}]|\([^(){}]*\))*\)|[^(){};@\s]|\s+(?!\s))*?(?=\s*\{)/,
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inside: {
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// mixin parameters
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variable: /@+[\w-]+/
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}
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},
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property: /(?:@\{[\w-]+\}|[\w-])+(?:\+_?)?(?=\s*:)/,
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operator: /[+\-*\/]/
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})
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Prism.languages.insertBefore('less', 'property', {
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variable: [
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// Variable declaration (the colon must be consumed!)
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{
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pattern: /@[\w-]+\s*:/,
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inside: {
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punctuation: /:/
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}
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},
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// Variable usage
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/@@?[\w-]+/
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],
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'mixin-usage': {
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pattern: /([{;]\s*)[.#](?!\d)[\w-].*?(?=[(;])/,
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lookbehind: true,
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alias: 'function'
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}
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})
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}
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