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Editing: livescript.js

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE

/**
 * Link to the project's GitHub page:
 * https://github.com/duralog/CodeMirror
 */

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

CodeMirror.defineMode('livescript', function(){
    var tokenBase = function(stream, state) {
      var next_rule = state.next || "start";
      if (next_rule) {
        state.next = state.next;
        var nr = Rules[next_rule];
        if (nr.splice) {
          for (var i$ = 0; i$ < nr.length; ++i$) {
            var r = nr[i$];
            if (r.regex && stream.match(r.regex)) {
              state.next = r.next || state.next;
              return r.token;
            }
          }
          stream.next();
          return 'error';
        }
        if (stream.match(r = Rules[next_rule])) {
          if (r.regex && stream.match(r.regex)) {
            state.next = r.next;
            return r.token;
          } else {
            stream.next();
            return 'error';
          }
        }
      }
      stream.next();
      return 'error';
    };
    var external = {
      startState: function(){
        return {
          next: 'start',
          lastToken: {style: null, indent: 0, content: ""}
        };
      },
      token: function(stream, state){
        while (stream.pos == stream.start)
          var style = tokenBase(stream, state);
        state.lastToken = {
          style: style,
          indent: stream.indentation(),
          content: stream.current()
        };
        return style.replace(/\./g, ' ');
      },
      indent: function(state){
        var indentation = state.lastToken.indent;
        if (state.lastToken.content.match(indenter)) {
          indentation += 2;
        }
        return indentation;
      }
    };
    return external;
  });

var identifier = '(?![\\d\\s])[$\\w\\xAA-\\uFFDC](?:(?!\\s)[$\\w\\xAA-\\uFFDC]|-[A-Za-z])*';
  var indenter = RegExp('(?:[({[=:]|[-~]>|\\b(?:e(?:lse|xport)|d(?:o|efault)|t(?:ry|hen)|finally|import(?:\\s*all)?|const|var|let|new|catch(?:\\s*' + identifier + ')?))\\s*$');
  var keywordend = '(?![$\\w]|-[A-Za-z]|\\s*:(?![:=]))';
  var stringfill = {
    token: 'string',
    regex: '.+'
  };
  var Rules = {
    start: [
      {
        token: 'comment.doc',
        regex: '/\\*',
        next: 'comment'
      }, {
        token: 'comment',
        regex: '#.*'
      }, {
        token: 'keyword',
        regex: '(?:t(?:h(?:is|row|en)|ry|ypeof!?)|c(?:on(?:tinue|st)|a(?:se|tch)|lass)|i(?:n(?:stanceof)?|mp(?:ort(?:\\s+all)?|lements)|[fs])|d(?:e(?:fault|lete|bugger)|o)|f(?:or(?:\\s+own)?|inally|unction)|s(?:uper|witch)|e(?:lse|x(?:tends|port)|val)|a(?:nd|rguments)|n(?:ew|ot)|un(?:less|til)|w(?:hile|ith)|o[fr]|return|break|let|var|loop)' + keywordend
      }, {
        token: 'constant.language',
        regex: '(?:true|false|yes|no|on|off|null|void|undefined)' + keywordend
      }, {
        token: 'invalid.illegal',
        regex: '(?:p(?:ackage|r(?:ivate|otected)|ublic)|i(?:mplements|nterface)|enum|static|yield)' + keywordend
      }, {
        token: 'language.support.class',
        regex: '(?:R(?:e(?:gExp|ferenceError)|angeError)|S(?:tring|yntaxError)|E(?:rror|valError)|Array|Boolean|Date|Function|Number|Object|TypeError|URIError)' + keywordend
      }, {
        token: 'language.support.function',
        regex: '(?:is(?:NaN|Finite)|parse(?:Int|Float)|Math|JSON|(?:en|de)codeURI(?:Component)?)' + keywordend
      }, {
        token: 'variable.language',
        regex: '(?:t(?:hat|il|o)|f(?:rom|allthrough)|it|by|e)' + keywordend
      }, {
        token: 'identifier',
        regex: identifier + '\\s*:(?![:=])'
      }, {
        token: 'variable',
        regex: identifier
      }, {
        token: 'keyword.operator',
        regex: '(?:\\.{3}|\\s+\\?)'
      }, {
        token: 'keyword.variable',
        regex: '(?:@+|::|\\.\\.)',
        next: 'key'
      }, {
        token: 'keyword.operator',
        regex: '\\.\\s*',
        next: 'key'
      }, {
        token: 'string',
        regex: '\\\\\\S[^\\s,;)}\\]]*'
      }, {
        token: 'string.doc',
        regex: '\'\'\'',
        next: 'qdoc'
      }, {
        token: 'string.doc',
        regex: '"""',
        next: 'qqdoc'
      }, {
        token: 'string',
        regex: '\'',
        next: 'qstring'
      }, {
        token: 'string',
        regex: '"',
        next: 'qqstring'
      }, {
        token: 'string',
        regex: '`',
        next: 'js'
      }, {
        token: 'string',
        regex: '<\\[',
        next: 'words'
      }, {
        token: 'string.regex',
        regex: '//',
        next: 'heregex'
      }, {
        token: 'string.regex',
        regex: '\\/(?:[^[\\/\\n\\\\]*(?:(?:\\\\.|\\[[^\\]\\n\\\\]*(?:\\\\.[^\\]\\n\\\\]*)*\\])[^[\\/\\n\\\\]*)*)\\/[gimy$]{0,4}',
        next: 'key'
      }, {
        token: 'constant.numeric',
        regex: '(?:0x[\\da-fA-F][\\da-fA-F_]*|(?:[2-9]|[12]\\d|3[0-6])r[\\da-zA-Z][\\da-zA-Z_]*|(?:\\d[\\d_]*(?:\\.\\d[\\d_]*)?|\\.\\d[\\d_]*)(?:e[+-]?\\d[\\d_]*)?[\\w$]*)'
      }, {
        token: 'lparen',
        regex: '[({[]'
      }, {
        token: 'rparen',
        regex: '[)}\\]]',
        next: 'key'
      }, {
        token: 'keyword.operator',
        regex: '\\S+'
      }, {
        token: 'text',
        regex: '\\s+'
      }
    ],
    heregex: [
      {
        token: 'string.regex',
        regex: '.*?//[gimy$?]{0,4}',
        next: 'start'
      }, {
        token: 'string.regex',
        regex: '\\s*#{'
      }, {
        token: 'comment.regex',
        regex: '\\s+(?:#.*)?'
      }, {
        token: 'string.regex',
        regex: '\\S+'
      }
    ],
    key: [
      {
        token: 'keyword.operator',
        regex: '[.?@!]+'
      }, {
        token: 'identifier',
        regex: identifier,
        next: 'start'
      }, {
        token: 'text',
        regex: '',
        next: 'start'
      }
    ],
    comment: [
      {
        token: 'comment.doc',
        regex: '.*?\\*/',
        next: 'start'
      }, {
        token: 'comment.doc',
        regex: '.+'
      }
    ],
    qdoc: [
      {
        token: 'string',
        regex: ".*?'''",
        next: 'key'
      }, stringfill
    ],
    qqdoc: [
      {
        token: 'string',
        regex: '.*?"""',
        next: 'key'
      }, stringfill
    ],
    qstring: [
      {
        token: 'string',
        regex: '[^\\\\\']*(?:\\\\.[^\\\\\']*)*\'',
        next: 'key'
      }, stringfill
    ],
    qqstring: [
      {
        token: 'string',
        regex: '[^\\\\"]*(?:\\\\.[^\\\\"]*)*"',
        next: 'key'
      }, stringfill
    ],
    js: [
      {
        token: 'string',
        regex: '[^\\\\`]*(?:\\\\.[^\\\\`]*)*`',
        next: 'key'
      }, stringfill
    ],
    words: [
      {
        token: 'string',
        regex: '.*?\\]>',
        next: 'key'
      }, stringfill
    ]
  };
  for (var idx in Rules) {
    var r = Rules[idx];
    if (r.splice) {
      for (var i = 0, len = r.length; i < len; ++i) {
        var rr = r[i];
        if (typeof rr.regex === 'string') {
          Rules[idx][i].regex = new RegExp('^' + rr.regex);
        }
      }
    } else if (typeof rr.regex === 'string') {
      Rules[idx].regex = new RegExp('^' + r.regex);
    }
  }

CodeMirror.defineMIME('text/x-livescript', 'livescript');

});