// TODO actually recognize syntax of TypeScript constructs

CodeMirror.defineMode(“javascript”, function(config, parserConfig) {

var indentUnit = config.indentUnit;
var jsonMode = parserConfig.json;
var isTS = parserConfig.typescript;

// Tokenizer

var keywords = function(){
  function kw(type) {return {type: type, style: "keyword"};}
  var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c");
  var operator = kw("operator"), atom = {type: "atom", style: "atom"};

  var jsKeywords = {
    "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,
    "return": C, "break": C, "continue": C, "new": C, "delete": C, "throw": C,
    "var": kw("var"), "const": kw("var"), "let": kw("var"),
    "function": kw("function"), "catch": kw("catch"),
    "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),
    "in": operator, "typeof": operator, "instanceof": operator,
    "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom,
    "this": kw("this")
  };

  // Extend the 'normal' keywords with the TypeScript language extensions
  if (isTS) {
    var type = {type: "variable", style: "variable-3"};
    var tsKeywords = {
      // object-like things
      "interface": kw("interface"),
      "class": kw("class"),
      "extends": kw("extends"),
      "constructor": kw("constructor"),

      // scope modifiers
      "public": kw("public"),
      "private": kw("private"),
      "protected": kw("protected"),
      "static": kw("static"),

      "super": kw("super"),

      // types
      "string": type, "number": type, "bool": type, "any": type
    };

    for (var attr in tsKeywords) {
      jsKeywords[attr] = tsKeywords[attr];
    }
  }

  return jsKeywords;
}();

var isOperatorChar = /[+\-*&%=<>!?|~^]/;

function chain(stream, state, f) {
  state.tokenize = f;
  return f(stream, state);
}

function nextUntilUnescaped(stream, end) {
  var escaped = false, next;
  while ((next = stream.next()) != null) {
    if (next == end && !escaped)
      return false;
    escaped = !escaped && next == "\\";
  }
  return escaped;
}

// Used as scratch variables to communicate multiple values without
// consing up tons of objects.
var type, content;
function ret(tp, style, cont) {
  type = tp; content = cont;
  return style;
}

function jsTokenBase(stream, state) {
  var ch = stream.next();
  if (ch == '"' || ch == "'")
    return chain(stream, state, jsTokenString(ch));
  else if (/[\[\]{}\(\),;\:\.]/.test(ch))
    return ret(ch);
  else if (ch == "0" && stream.eat(/x/i)) {
    stream.eatWhile(/[\da-f]/i);
    return ret("number", "number");
  }
  else if (/\d/.test(ch) || ch == "-" && stream.eat(/\d/)) {
    stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/);
    return ret("number", "number");
  }
  else if (ch == "/") {
    if (stream.eat("*")) {
      return chain(stream, state, jsTokenComment);
    }
    else if (stream.eat("/")) {
      stream.skipToEnd();
      return ret("comment", "comment");
    }
    else if (state.lastType == "operator" || state.lastType == "keyword c" ||
             /^[\[{}\(,;:]$/.test(state.lastType)) {
      nextUntilUnescaped(stream, "/");
      stream.eatWhile(/[gimy]/); // 'y' is "sticky" option in Mozilla
      return ret("regexp", "string-2");
    }
    else {
      stream.eatWhile(isOperatorChar);
      return ret("operator", null, stream.current());
    }
  }
  else if (ch == "#") {
    stream.skipToEnd();
    return ret("error", "error");
  }
  else if (isOperatorChar.test(ch)) {
    stream.eatWhile(isOperatorChar);
    return ret("operator", null, stream.current());
  }
  else {
    stream.eatWhile(/[\w\$_]/);
    var word = stream.current(), known = keywords.propertyIsEnumerable(word) && keywords[word];
    return (known && state.lastType != ".") ? ret(known.type, known.style, word) :
                   ret("variable", "variable", word);
  }
}

function jsTokenString(quote) {
  return function(stream, state) {
    if (!nextUntilUnescaped(stream, quote))
      state.tokenize = jsTokenBase;
    return ret("string", "string");
  };
}

function jsTokenComment(stream, state) {
  var maybeEnd = false, ch;
  while (ch = stream.next()) {
    if (ch == "/" && maybeEnd) {
      state.tokenize = jsTokenBase;
      break;
    }
    maybeEnd = (ch == "*");
  }
  return ret("comment", "comment");
}

// Parser

var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true};

function JSLexical(indented, column, type, align, prev, info) {
  this.indented = indented;
  this.column = column;
  this.type = type;
  this.prev = prev;
  this.info = info;
  if (align != null) this.align = align;
}

function inScope(state, varname) {
  for (var v = state.localVars; v; v = v.next)
    if (v.name == varname) return true;
}

function parseJS(state, style, type, content, stream) {
  var cc = state.cc;
  // Communicate our context to the combinators.
  // (Less wasteful than consing up a hundred closures on every call.)
  cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc;

  if (!state.lexical.hasOwnProperty("align"))
    state.lexical.align = true;

  while(true) {
    var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;
    if (combinator(type, content)) {
      while(cc.length && cc[cc.length - 1].lex)
        cc.pop()();
      if (cx.marked) return cx.marked;
      if (type == "variable" && inScope(state, content)) return "variable-2";
      return style;
    }
  }
}

// Combinator utils

var cx = {state: null, column: null, marked: null, cc: null};
function pass() {
  for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
}
function cont() {
  pass.apply(null, arguments);
  return true;
}
function register(varname) {
  function inList(list) {
    for (var v = list; v; v = v.next)
      if (v.name == varname) return true;
    return false;
  }
  var state = cx.state;
  if (state.context) {
    cx.marked = "def";
    if (inList(state.localVars)) return;
    state.localVars = {name: varname, next: state.localVars};
  } else {
    if (inList(state.globalVars)) return;
    state.globalVars = {name: varname, next: state.globalVars};
  }
}

// Combinators

var defaultVars = {name: "this", next: {name: "arguments"}};
function pushcontext() {
  cx.state.context = {prev: cx.state.context, vars: cx.state.localVars};
  cx.state.localVars = defaultVars;
}
function popcontext() {
  cx.state.localVars = cx.state.context.vars;
  cx.state.context = cx.state.context.prev;
}
function pushlex(type, info) {
  var result = function() {
    var state = cx.state;
    state.lexical = new JSLexical(state.indented, cx.stream.column(), type, null, state.lexical, info);
  };
  result.lex = true;
  return result;
}
function poplex() {
  var state = cx.state;
  if (state.lexical.prev) {
    if (state.lexical.type == ")")
      state.indented = state.lexical.indented;
    state.lexical = state.lexical.prev;
  }
}
poplex.lex = true;

function expect(wanted) {
  return function(type) {
    if (type == wanted) return cont();
    else if (wanted == ";") return pass();
    else return cont(arguments.callee);
  };
}

function statement(type) {
  if (type == "var") return cont(pushlex("vardef"), vardef1, expect(";"), poplex);
  if (type == "keyword a") return cont(pushlex("form"), expression, statement, poplex);
  if (type == "keyword b") return cont(pushlex("form"), statement, poplex);
  if (type == "{") return cont(pushlex("}"), block, poplex);
  if (type == ";") return cont();
  if (type == "if") return cont(pushlex("form"), expression, statement, poplex, maybeelse(cx.state.indented));
  if (type == "function") return cont(functiondef);
  if (type == "for") return cont(pushlex("form"), expect("("), pushlex(")"), forspec1, expect(")"),
                                    poplex, statement, poplex);
  if (type == "variable") return cont(pushlex("stat"), maybelabel);
  if (type == "switch") return cont(pushlex("form"), expression, pushlex("}", "switch"), expect("{"),
                                       block, poplex, poplex);
  if (type == "case") return cont(expression, expect(":"));
  if (type == "default") return cont(expect(":"));
  if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"),
                                      statement, poplex, popcontext);
  return pass(pushlex("stat"), expression, expect(";"), poplex);
}
function expression(type) {
  return expressionInner(type, maybeoperatorComma);
}
function expressionNoComma(type) {
  return expressionInner(type, maybeoperatorNoComma);
}
function expressionInner(type, maybeop) {
  if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);
  if (type == "function") return cont(functiondef);
  if (type == "keyword c") return cont(maybeexpression);
  if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);
  if (type == "operator") return cont(expression);
  if (type == "[") return cont(pushlex("]"), commasep(expressionNoComma, "]"), poplex, maybeop);
  if (type == "{") return cont(pushlex("}"), commasep(objprop, "}"), poplex, maybeop);
  return cont();
}
function maybeexpression(type) {
  if (type.match(/[;\}\)\],]/)) return pass();
  return pass(expression);
}

function maybeoperatorComma(type, value) {
  if (type == ",") return pass();
  return maybeoperatorNoComma(type, value, maybeoperatorComma);
}
function maybeoperatorNoComma(type, value, me) {
  if (!me) me = maybeoperatorNoComma;
  if (type == "operator") {
    if (/\+\+|--/.test(value)) return cont(me);
    if (value == "?") return cont(expression, expect(":"), expression);
    return cont(expression);
  }
  if (type == ";") return;
  if (type == "(") return cont(pushlex(")", "call"), commasep(expressionNoComma, ")"), poplex, me);
  if (type == ".") return cont(property, me);
  if (type == "[") return cont(pushlex("]"), expression, expect("]"), poplex, me);
}
function maybelabel(type) {
  if (type == ":") return cont(poplex, statement);
  return pass(maybeoperatorComma, expect(";"), poplex);
}
function property(type) {
  if (type == "variable") {cx.marked = "property"; return cont();}
}
function objprop(type, value) {
  if (type == "variable") {
    cx.marked = "property";
    if (value == "get" || value == "set") return cont(getterSetter);
  } else if (type == "number" || type == "string") {
    cx.marked = type + " property";
  }
  if (atomicTypes.hasOwnProperty(type)) return cont(expect(":"), expressionNoComma);
}
function getterSetter(type) {
  if (type == ":") return cont(expression);
  if (type != "variable") return cont(expect(":"), expression);
  cx.marked = "property";
  return cont(functiondef);
}
function commasep(what, end) {
  function proceed(type) {
    if (type == ",") {
      var lex = cx.state.lexical;
      if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;
      return cont(what, proceed);
    }
    if (type == end) return cont();
    return cont(expect(end));
  }
  return function(type) {
    if (type == end) return cont();
    else return pass(what, proceed);
  };
}
function block(type) {
  if (type == "}") return cont();
  return pass(statement, block);
}
function maybetype(type) {
  if (type == ":") return cont(typedef);
  return pass();
}
function typedef(type) {
  if (type == "variable"){cx.marked = "variable-3"; return cont();}
  return pass();
}
function vardef1(type, value) {
  if (type == "variable") {
    register(value);
    return isTS ? cont(maybetype, vardef2) : cont(vardef2);
  }
  return pass();
}
function vardef2(type, value) {
  if (value == "=") return cont(expressionNoComma, vardef2);
  if (type == ",") return cont(vardef1);
}
function maybeelse(indent) {
  return function(type, value) {
    if (type == "keyword b" && value == "else") {
      cx.state.lexical = new JSLexical(indent, 0, "form", null, cx.state.lexical);
      return cont(statement, poplex);
    }
    return pass();
  };
}
function forspec1(type) {
  if (type == "var") return cont(vardef1, expect(";"), forspec2);
  if (type == ";") return cont(forspec2);
  if (type == "variable") return cont(formaybein);
  return pass(expression, expect(";"), forspec2);
}
function formaybein(_type, value) {
  if (value == "in") return cont(expression);
  return cont(maybeoperatorComma, forspec2);
}
function forspec2(type, value) {
  if (type == ";") return cont(forspec3);
  if (value == "in") return cont(expression);
  return pass(expression, expect(";"), forspec3);
}
function forspec3(type) {
  if (type != ")") cont(expression);
}
function functiondef(type, value) {
  if (type == "variable") {register(value); return cont(functiondef);}
  if (type == "(") return cont(pushlex(")"), pushcontext, commasep(funarg, ")"), poplex, statement, popcontext);
}
function funarg(type, value) {
  if (type == "variable") {register(value); return isTS ? cont(maybetype) : cont();}
}

// Interface

return {
  startState: function(basecolumn) {
    return {
      tokenize: jsTokenBase,
      lastType: null,
      cc: [],
      lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
      localVars: parserConfig.localVars,
      globalVars: parserConfig.globalVars,
      context: parserConfig.localVars && {vars: parserConfig.localVars},
      indented: 0
    };
  },

  token: function(stream, state) {
    if (stream.sol()) {
      if (!state.lexical.hasOwnProperty("align"))
        state.lexical.align = false;
      state.indented = stream.indentation();
    }
    if (state.tokenize != jsTokenComment && stream.eatSpace()) return null;
    var style = state.tokenize(stream, state);
    if (type == "comment") return style;
    state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type;
    return parseJS(state, style, type, content, stream);
  },

  indent: function(state, textAfter) {
    if (state.tokenize == jsTokenComment) return CodeMirror.Pass;
    if (state.tokenize != jsTokenBase) return 0;
    var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical;
    if (lexical.type == "stat" && firstChar == "}") lexical = lexical.prev;
    var type = lexical.type, closing = firstChar == type;
    if (parserConfig.statementIndent != null) {
      if (type == ")" && lexical.prev && lexical.prev.type == "stat") lexical = lexical.prev;
      if (lexical.type == "stat") return lexical.indented + parserConfig.statementIndent;
    }

    if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? 4 : 0);
    else if (type == "form" && firstChar == "{") return lexical.indented;
    else if (type == "form") return lexical.indented + indentUnit;
    else if (type == "stat")
      return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? indentUnit : 0);
    else if (lexical.info == "switch" && !closing)
      return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
    else if (lexical.align) return lexical.column + (closing ? 0 : 1);
    else return lexical.indented + (closing ? 0 : indentUnit);
  },

  electricChars: ":{}",
  blockCommentStart: jsonMode ? null : "/*",
  blockCommentEnd: jsonMode ? null : "*/",
  lineComment: jsonMode ? null : "//",

  jsonMode: jsonMode
};

});

CodeMirror.defineMIME(“text/javascript”, “javascript”); CodeMirror.defineMIME(“text/ecmascript”, “javascript”); CodeMirror.defineMIME(“application/javascript”, “javascript”); CodeMirror.defineMIME(“application/ecmascript”, “javascript”); CodeMirror.defineMIME(“application/json”, {name: “javascript”, json: true}); CodeMirror.defineMIME(“application/x-json”, {name: “javascript”, json: true}); CodeMirror.defineMIME(“text/typescript”, { name: “javascript”, typescript: true }); CodeMirror.defineMIME(“application/typescript”, { name: “javascript”, typescript: true });