// 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("../../addon/mode/simple"), require("../../addon/mode/multiplex"));
else if (typeof define == "function" && define.amd) // AMD
  define(["../../lib/codemirror", "../../addon/mode/simple", "../../addon/mode/multiplex"], mod);
else // Plain browser env
  mod(CodeMirror);

})(function(CodeMirror) {

"use strict";

CodeMirror.defineSimpleMode("handlebars-tags", {
  start: [
    { regex: /\{\{!--/, push: "dash_comment", token: "comment" },
    { regex: /\{\{!/,   push: "comment", token: "comment" },
    { regex: /\{\{/,    push: "handlebars", token: "tag" }
  ],
  handlebars: [
    { regex: /\}\}/, pop: true, token: "tag" },

    // Double and single quotes
    { regex: /"(?:[^\\"]|\\.)*"?/, token: "string" },
    { regex: /'(?:[^\\']|\\.)*'?/, token: "string" },

    // Handlebars keywords
    { regex: />|[#\/]([A-Za-z_]\w*)/, token: "keyword" },
    { regex: /(?:else|this)\b/, token: "keyword" },

    // Numeral
    { regex: /\d+/i, token: "number" },

    // Atoms like = and .
    { regex: /=|~|@|true|false/, token: "atom" },

    // Paths
    { regex: /(?:\.\.\/)*(?:[A-Za-z_][\w\.]*)+/, token: "variable-2" }
  ],
  dash_comment: [
    { regex: /--\}\}/, pop: true, token: "comment" },

    // Commented code
    { regex: /./, token: "comment"}
  ],
  comment: [
    { regex: /\}\}/, pop: true, token: "comment" },
    { regex: /./, token: "comment" }
  ]
});

CodeMirror.defineMode("handlebars", function(config, parserConfig) {
  var handlebars = CodeMirror.getMode(config, "handlebars-tags");
  if (!parserConfig || !parserConfig.base) return handlebars;
  return CodeMirror.multiplexingMode(
    CodeMirror.getMode(config, parserConfig.base),
    {open: "{{", close: "}}", mode: handlebars, parseDelimiters: true}
  );
});

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

});