prism-scss.js
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Prism.languages.scss = Prism.languages.extend('css', {
'comment': {
pattern: /(^|[^\\])(?:\/\*[\w\W]*?\*\/|\/\/.*)/,
lookbehind: true
},
'atrule': {
pattern: /@[\w-]+(?:\([^()]+\)|[^(])*?(?=\s+[{;])/,
inside: {
'rule': /@[\w-]+/
// See rest below
}
},
// url, compassified
'url': /(?:[-a-z]+-)*url(?=\()/i,
// CSS selector regex is not appropriate for Sass
// since there can be lot more things (var, @ directive, nesting..)
// a selector must start at the end of a property or after a brace (end of other rules or nesting)
// it can contain some characters that aren't used for defining rules or end of selector, & (parent selector), or interpolated variable
// the end of a selector is found when there is no rules in it ( {} or {\s}) or if there is a property (because an interpolated var
// can "pass" as a selector- e.g: proper#{$erty})
// this one was hard to do, so please be careful if you edit this one :)
'selector': {
// Initial look-ahead is used to prevent matching of blank selectors
pattern: /(?=\S)[^@;\{\}\(\)]?([^@;\{\}\(\)]|&|#\{\$[-_\w]+\})+(?=\s*\{(\}|\s|[^\}]+(:|\{)[^\}]+))/m,
inside: {
'placeholder': /%[-_\w]+/
}
}
});
Prism.languages.insertBefore('scss', 'atrule', {
'keyword': [
/@(?:if|else(?: if)?|for|each|while|import|extend|debug|warn|mixin|include|function|return|content)/i,
{
pattern: /( +)(?:from|through)(?= )/,
lookbehind: true
}
]
});
Prism.languages.insertBefore('scss', 'property', {
// var and interpolated vars
'variable': /\$[-_\w]+|#\{\$[-_\w]+\}/
});
Prism.languages.insertBefore('scss', 'function', {
'placeholder': {
pattern: /%[-_\w]+/,
alias: 'selector'
},
'statement': /\B!(?:default|optional)\b/i,
'boolean': /\b(?:true|false)\b/,
'null': /\bnull\b/,
'operator': {
pattern: /(\s)(?:[-+*\/%]|[=!]=|<=?|>=?|and|or|not)(?=\s)/,
lookbehind: true
}
});
Prism.languages.scss['atrule'].inside.rest = Prism.util.clone(Prism.languages.scss);