text: /*
  Language: XL
  Author: Christophe de Dinechin <christophe@taodyne.com>
  Description: An extensible programming language, based on parse tree rewriting
  Website: http://xlr.sf.net
  */
  
  export default function(hljs) {
    var BUILTIN_MODULES =
      'ObjectLoader Animate MovieCredits Slides Filters Shading Materials LensFlare Mapping VLCAudioVideo ' +
      'StereoDecoder PointCloud NetworkAccess RemoteControl RegExp ChromaKey Snowfall NodeJS Speech Charts';
  
    var XL_KEYWORDS = {
      keyword:
        'if then else do while until for loop import with is as where when by data constant ' +
        'integer real text name boolean symbol infix prefix postfix block tree',
      literal:
        'true false nil',
      built_in:
        'in mod rem and or xor not abs sign floor ceil sqrt sin cos tan asin ' +
        'acos atan exp expm1 log log2 log10 log1p pi at text_length text_range ' +
        'text_find text_replace contains page slide basic_slide title_slide ' +
        'title subtitle fade_in fade_out fade_at clear_color color line_color ' +
        'line_width texture_wrap texture_transform texture scale_?x scale_?y ' +
        'scale_?z? translate_?x translate_?y translate_?z? rotate_?x rotate_?y ' +
        'rotate_?z? rectangle circle ellipse sphere path line_to move_to ' +
        'quad_to curve_to theme background contents locally time mouse_?x ' +
        'mouse_?y mouse_buttons ' +
        BUILTIN_MODULES
    };
  
    var DOUBLE_QUOTE_TEXT = {
      className: 'string',
      begin: '"', end: '"', illegal: '\\n'
    };
    var SINGLE_QUOTE_TEXT = {
      className: 'string',
      begin: '\'', end: '\'', illegal: '\\n'
    };
    var LONG_TEXT = {
      className: 'string',
      begin: '<<', end: '>>'
    };
    var BASED_NUMBER = {
      className: 'number',
      begin: '[0-9]+#[0-9A-Z_]+(\\.[0-9-A-Z_]+)?#?([Ee][+-]?[0-9]+)?'
    };
    var IMPORT = {
      beginKeywords: 'import', end: '$',
      keywords: XL_KEYWORDS,
      contains: [DOUBLE_QUOTE_TEXT]
    };
    var FUNCTION_DEFINITION = {
      className: 'function',
      begin: /[a-z][^\n]*->/, returnBegin: true, end: /->/,
      contains: [
        hljs.inherit(hljs.TITLE_MODE, {starts: {
          endsWithParent: true,
          keywords: XL_KEYWORDS
        }})
      ]
    };
    return {
      aliases: ['tao'],
      lexemes: /[a-zA-Z][a-zA-Z0-9_?]*/,
      keywords: XL_KEYWORDS,
      contains: [
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      DOUBLE_QUOTE_TEXT,
      SINGLE_QUOTE_TEXT,
      LONG_TEXT,
      FUNCTION_DEFINITION,
      IMPORT,
      BASED_NUMBER,
      hljs.NUMBER_MODE
      ]
    };
  }
  