(function(window) {
  window.CodeMirror = {};

  function splitLines(string){ return string.split(/\r?\n|\r/); };

  function StringStream(string) {
    this.pos = this.start = 0;
    this.string = string;
  }
  StringStream.prototype = {
    eol: function() {return this.pos >= this.string.length;},
    sol: function() {return this.pos == 0;},
    peek: function() {return this.string.charAt(this.pos) || null;},
    next: function() {
      if (this.pos < this.string.length)
        return this.string.charAt(this.pos++);
    },
    eat: function(match) {
      var ch = this.string.charAt(this.pos);
      if (typeof match == "string") var ok = ch == match;
      else var ok = ch && (match.test ? match.test(ch) : match(ch));
      if (ok) {++this.pos; return ch;}
    },
    eatWhile: function(match) {
      var start = this.pos;
      while (this.eat(match)){}
      return this.pos > start;
    },
    eatSpace: function() {
      var start = this.pos;
      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
      return this.pos > start;
    },
    skipToEnd: function() {this.pos = this.string.length;},
    skipTo: function(ch) {
      var found = this.string.indexOf(ch, this.pos);
      if (found > -1) {this.pos = found; return true;}
    },
    backUp: function(n) {this.pos -= n;},
    column: function() {return this.start;},
    indentation: function() {return 0;},
    match: function(pattern, consume, caseInsensitive) {
      if (typeof pattern == "string") {
        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
        var substr = this.string.substr(this.pos, pattern.length);
        if (cased(substr) == cased(pattern)) {
          if (consume !== false) this.pos += pattern.length;
          return true;
        }
      } else {
        var match = this.string.slice(this.pos).match(pattern);
        if (match && match.index > 0) return null;
        if (match && consume !== false) this.pos += match[0].length;
        return match;
      }
    },
    current: function(){return this.string.slice(this.start, this.pos);}
  };
  CodeMirror.StringStream = StringStream;

  CodeMirror.startState = function (mode, a1, a2) {
    return mode.startState ? mode.startState(a1, a2) : true;
  };

  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
  CodeMirror.defineMode = function (name, mode) { modes[name] = mode; };
  CodeMirror.defineMIME = function (mime, spec) { mimeModes[mime] = spec; };
  CodeMirror.defineMode("null", function() {
  return {token: function(stream) {stream.skipToEnd();}};
  });
  CodeMirror.defineMIME("text/plain", "null");
  CodeMirror.getMode = function (options, spec) {
    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
      spec = mimeModes[spec];
    if (typeof spec == "string")
      var mname = spec, config = {};
    else if (spec != null)
      var mname = spec.name, config = spec;
    var mfactory = modes[mname];
    if (!mfactory) throw new Error("Unknown mode: " + spec);
    return mfactory(options, config || {});
  };
}(this));