cocos2d/cocos2d-x — pull request #2401 by sergey-shambir (2013-04-18 21:29:27+00:00)
Title: Added visitor class for all data structures in /cocoa

This class will be extremely helpful for various tasks like:
1) serialization to JSON, XML
2) converting Objective-C native data types
3) pretty-printing objects to log
4) safe value reading from CCDictionary/CCArray facade