// CodeMirror, copyright © by Marijn Haverbeke and others // Distributed under an MIT license: codemirror.net/LICENSE

(function(mod) {

if (typeof exports == "object" && typeof module == "object") // CommonJS
  mod(require("../../lib/codemirror"), require("../htmlmixed/htmlmixed"),
      require("../../addon/mode/overlay"));
else if (typeof define == "function" && define.amd) // AMD
  define(["../../lib/codemirror", "../htmlmixed/htmlmixed",
          "../../addon/mode/overlay"], mod);
else // Plain browser env
  mod(CodeMirror);

})(function(CodeMirror) {

"use strict";

CodeMirror.defineMode("tornado:inner", function() {
  var keywords = ["and","as","assert","autoescape","block","break","class","comment","context",
                  "continue","datetime","def","del","elif","else","end","escape","except",
                  "exec","extends","false","finally","for","from","global","if","import","in",
                  "include","is","json_encode","lambda","length","linkify","load","module",
                  "none","not","or","pass","print","put","raise","raw","return","self","set",
                  "squeeze","super","true","try","url_escape","while","with","without","xhtml_escape","yield"];
  keywords = new RegExp("^((" + keywords.join(")|(") + "))\\b");

  function tokenBase (stream, state) {
    stream.eatWhile(/[^\{]/);
    var ch = stream.next();
    if (ch == "{") {
      if (ch = stream.eat(/\{|%|#/)) {
        state.tokenize = inTag(ch);
        return "tag";
      }
    }
  }
  function inTag (close) {
    if (close == "{") {
      close = "}";
    }
    return function (stream, state) {
      var ch = stream.next();
      if ((ch == close) && stream.eat("}")) {
        state.tokenize = tokenBase;
        return "tag";
      }
      if (stream.match(keywords)) {
        return "keyword";
      }
      return close == "#" ? "comment" : "string";
    };
  }
  return {
    startState: function () {
      return {tokenize: tokenBase};
    },
    token: function (stream, state) {
      return state.tokenize(stream, state);
    }
  };
});

CodeMirror.defineMode("tornado", function(config) {
  var htmlBase = CodeMirror.getMode(config, "text/html");
  var tornadoInner = CodeMirror.getMode(config, "tornado:inner");
  return CodeMirror.overlayMode(htmlBase, tornadoInner);
});

CodeMirror.defineMIME("text/x-tornado", "tornado");

});