Ticket/InsdepUI/plugin/highlight-9.9.0/src/languages/less.js

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/*
Language: Less
Author:   Max Mikhailov <seven.phases.max@gmail.com>
Category: css
*/

function(hljs) {
  var IDENT_RE        = '[\\w-]+'; // yes, Less identifiers may begin with a digit
  var INTERP_IDENT_RE = '(' + IDENT_RE + '|@{' + IDENT_RE + '})';

  /* Generic Modes */

  var RULES = [], VALUE = []; // forward def. for recursive modes

  var STRING_MODE = function(c) { return {
    // Less strings are not multiline (also include '~' for more consistent coloring of "escaped" strings)
    className: 'string', begin: '~?' + c + '.*?' + c
  };};

  var IDENT_MODE = function(name, begin, relevance) { return {
    className: name, begin: begin, relevance: relevance
  };};

  var PARENS_MODE = {
    // used only to properly balance nested parens inside mixin call, def. arg list
    begin: '\\(', end: '\\)', contains: VALUE, relevance: 0
  };

  // generic Less highlighter (used almost everywhere except selectors):
  VALUE.push(
    hljs.C_LINE_COMMENT_MODE,
    hljs.C_BLOCK_COMMENT_MODE,
    STRING_MODE("'"),
    STRING_MODE('"'),
    hljs.CSS_NUMBER_MODE, // fixme: it does not include dot for numbers like .5em :(
    {
      begin: '(url|data-uri)\\(',
      starts: {className: 'string', end: '[\\)\\n]', excludeEnd: true}
    },
    IDENT_MODE('number', '#[0-9A-Fa-f]+\\b'),
    PARENS_MODE,
    IDENT_MODE('variable', '@@?' + IDENT_RE, 10),
    IDENT_MODE('variable', '@{'  + IDENT_RE + '}'),
    IDENT_MODE('built_in', '~?`[^`]*?`'), // inline javascript (or whatever host language) *multiline* string
    { // @media features (it’s here to not duplicate things in AT_RULE_MODE with extra PARENS_MODE overriding):
      className: 'attribute', begin: IDENT_RE + '\\s*:', end: ':', returnBegin: true, excludeEnd: true
    },
    {
      className: 'meta',
      begin: '!important'
    }
  );

  var VALUE_WITH_RULESETS = VALUE.concat({
    begin: '{', end: '}', contains: RULES
  });

  var MIXIN_GUARD_MODE = {
    beginKeywords: 'when', endsWithParent: true,
    contains: [{beginKeywords: 'and not'}].concat(VALUE) // using this form to override VALUE’s 'function' match