if(exports) {
  var Handlebars = {};
}

Handlebars.Exception = function(message) {
  this.message = message;
};

// Build out our basic SafeString type
Handlebars.SafeString = function(string) {
  this.string = string;
}
Handlebars.SafeString.prototype.toString = function() {
  return this.string.toString();
}

Handlebars.Utils = {
  escapeExpression: function(string) {
    // don't escape SafeStrings, since they're already safe
    if (string instanceof Handlebars.SafeString) {
      return string.toString();
    }
    else if (string === null) {
      string = "";
    }

    return string.toString().replace(/&(?!\w+;)|["\\<>]/g, function(str) {
      switch(str) {
        case "&":
          return "&amp;";
          break;
        case '"':
          return "\"";
        case "\\":
          return "\\\\";
          break;
        case "<":
          return "&lt;";
          break;
        case ">":
          return "&gt;";
          break;
        default:
          return str;
      }
    });
  }
}

if(exports) {
  exports.Utils = Handlebars.Utils;
  exports.SafeString = Handlebars.SafeString;
  exports.Exception = Handlebars.Exception;
}