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stylus.js
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stylus.js
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/*
Language: Stylus
Author: Bryant Williams <b.n.williams@gmail.com>
Description: Stylus is an expressive, robust, feature-rich CSS language built for nodejs.
Website: https://github.com/stylus/stylus
Category: css, web
*/
import * as css from "./lib/css-shared.js";
/** @type LanguageFn */
export default function(hljs) {
const modes = css.MODES(hljs);
const AT_MODIFIERS = "and or not only";
const VARIABLE = {
className: 'variable',
begin: '\\$' + hljs.IDENT_RE
};
const AT_KEYWORDS = [
'charset',
'css',
'debug',
'extend',
'font-face',
'for',
'import',
'include',
'keyframes',
'media',
'mixin',
'page',
'warn',
'while'
];
const LOOKAHEAD_TAG_END = '(?=[.\\s\\n[:,(])';
// illegals
const ILLEGAL = [
'\\?',
'(\\bReturn\\b)', // monkey
'(\\bEnd\\b)', // monkey
'(\\bend\\b)', // vbscript
'(\\bdef\\b)', // gradle
';', // a whole lot of languages
'#\\s', // markdown
'\\*\\s', // markdown
'===\\s', // markdown
'\\|',
'%' // prolog
];
return {
name: 'Stylus',
aliases: [ 'styl' ],
case_insensitive: false,
keywords: 'if else for in',
illegal: '(' + ILLEGAL.join('|') + ')',
contains: [
// strings
hljs.QUOTE_STRING_MODE,
hljs.APOS_STRING_MODE,
// comments
hljs.C_LINE_COMMENT_MODE,
hljs.C_BLOCK_COMMENT_MODE,
// hex colors
modes.HEXCOLOR,
// class tag
{
begin: '\\.[a-zA-Z][a-zA-Z0-9_-]*' + LOOKAHEAD_TAG_END,
className: 'selector-class'
},
// id tag
{
begin: '#[a-zA-Z][a-zA-Z0-9_-]*' + LOOKAHEAD_TAG_END,
className: 'selector-id'
},
// tags
{
begin: '\\b(' + css.TAGS.join('|') + ')' + LOOKAHEAD_TAG_END,
className: 'selector-tag'
},
// psuedo selectors
{
className: 'selector-pseudo',
begin: '&?:(' + css.PSEUDO_CLASSES.join('|') + ')' + LOOKAHEAD_TAG_END
},
{
className: 'selector-pseudo',
begin: '&?::(' + css.PSEUDO_ELEMENTS.join('|') + ')' + LOOKAHEAD_TAG_END
},
modes.ATTRIBUTE_SELECTOR_MODE,
{
className: "keyword",
begin: /@media/,
starts: {
end: /[{;}]/,
keywords: {
$pattern: /[a-z-]+/,
keyword: AT_MODIFIERS,
attribute: css.MEDIA_FEATURES.join(" ")
},
contains: [ modes.CSS_NUMBER_MODE ]
}
},
// @ keywords
{
className: 'keyword',
begin: '\@((-(o|moz|ms|webkit)-)?(' + AT_KEYWORDS.join('|') + '))\\b'
},
// variables
VARIABLE,
// dimension
modes.CSS_NUMBER_MODE,
// functions
// - only from beginning of line + whitespace
{
className: 'function',
begin: '^[a-zA-Z][a-zA-Z0-9_\-]*\\(.*\\)',
illegal: '[\\n]',
returnBegin: true,
contains: [
{
className: 'title',
begin: '\\b[a-zA-Z][a-zA-Z0-9_\-]*'
},
{
className: 'params',
begin: /\(/,
end: /\)/,
contains: [
modes.HEXCOLOR,
VARIABLE,
hljs.APOS_STRING_MODE,
modes.CSS_NUMBER_MODE,
hljs.QUOTE_STRING_MODE
]
}
]
},
// css variables
modes.CSS_VARIABLE,
// attributes
// - only from beginning of line + whitespace
// - must have whitespace after it
{
className: 'attribute',
begin: '\\b(' + css.ATTRIBUTES.join('|') + ')\\b',
starts: {
// value container
end: /;|$/,
contains: [
modes.HEXCOLOR,
VARIABLE,
hljs.APOS_STRING_MODE,
hljs.QUOTE_STRING_MODE,
modes.CSS_NUMBER_MODE,
hljs.C_BLOCK_COMMENT_MODE,
modes.IMPORTANT
],
illegal: /\./,
relevance: 0
}
}
]
};
}