/*!

* Chai - transferFlags utility
* Copyright(c) 2012-2014 Jake Luer <jake@alogicalparadox.com>
* MIT Licensed
*/

/**

* ### .transferFlags(assertion, object, includeAll = true)
*
* Transfer all the flags for `assertion` to `object`. If
* `includeAll` is set to `false`, then the base Chai
* assertion flags (namely `object`, `ssfi`, `lockSsfi`,
* and `message`) will not be transferred.
*
*
*     var newAssertion = new Assertion();
*     utils.transferFlags(assertion, newAssertion);
*
*     var anotherAssertion = new Assertion(myObj);
*     utils.transferFlags(assertion, anotherAssertion, false);
*
* @param {Assertion} assertion the assertion to transfer the flags from
* @param {Object} object the object to transfer the flags to; usually a new assertion
* @param {Boolean} includeAll
* @namespace Utils
* @name transferFlags
* @api private
*/

module.exports = function transferFlags(assertion, object, includeAll) {

var flags = assertion.__flags || (assertion.__flags = Object.create(null));

if (!object.__flags) {
  object.__flags = Object.create(null);
}

includeAll = arguments.length === 3 ? includeAll : true;

for (var flag in flags) {
  if (includeAll ||
      (flag !== 'object' && flag !== 'ssfi' && flag !== 'lockSsfi' && flag != 'message')) {
    object.__flags[flag] = flags[flag];
  }
}

};