text: // CodeMirror, copyright (c) by Marijn Haverbeke and others
  // Distributed under an MIT license: http://codemirror.net/LICENSE
  
  (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";
  
    function wordRegexp(words) {
      return new RegExp("^((" + words.join(")|(") + "))\\b", "i");
    };
  
    var keywordArray = [
      "package", "message", "import", "syntax",
      "required", "optional", "repeated", "reserved", "default", "extensions", "packed",
      "bool", "bytes", "double", "enum", "float", "string",
      "int32", "int64", "uint32", "uint64", "sint32", "sint64", "fixed32", "fixed64", "sfixed32", "sfixed64",
      "option", "service", "rpc", "returns"
    ];
    var keywords = wordRegexp(keywordArray);
  
    CodeMirror.registerHelper("hintWords", "protobuf", keywordArray);
  
    var identifiers = new RegExp("^[_A-Za-z\xa1-\uffff][_A-Za-z0-9\xa1-\uffff]*");
  
    function tokenBase(stream) {
      // whitespaces
      if (stream.eatSpace()) return null;
  
      // Handle one line Comments
      if (stream.match("//")) {
        stream.skipToEnd();
        return "comment";
      }
  
      // Handle Number Literals
      if (stream.match(/^[0-9\.+-]/, false)) {
        if (stream.match(/^[+-]?0x[0-9a-fA-F]+/))
          return "number";
        if (stream.match(/^[+-]?\d*\.\d+([EeDd][+-]?\d+)?/))
          return "number";
        if (stream.match(/^[+-]?\d+([EeDd][+-]?\d+)?/))
          return "number";
      }
  
      // Handle Strings
      if (stream.match(/^"([^"]|(""))*"/)) { return "string"; }
      if (stream.match(/^'([^']|(''))*'/)) { return "string"; }
  
      // Handle words
      if (stream.match(keywords)) { return "keyword"; }
      if (stream.match(identifiers)) { return "variable"; } ;
  
      // Handle non-detected items
      stream.next();
      return null;
    };
  
    CodeMirror.defineMode("protobuf", function() {
      return {token: tokenBase};
    });
  
    CodeMirror.defineMIME("text/x-protobuf", "protobuf");
  });
  