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