#ifndef DATACONTAINER_H
#define DATACONTAINER_H

/*
 * Usage:
 *	1) Define your data containers
 *		BeginDataContainersDefinition(containerType);
 *		  DefineDataContainerFor (int, Int);
 *		  DefineDataContainerFor (double, Double);
 *		  DefineDataContainerFor (some::Ugly::Namespaced::MyClass, MyClass);
 *		EndDataContainersDefinition;
 *
 *	2) Instantiate a data container
 *		NewDataContainer(containerType, myDC);
 *
 *	3) Add data
 *		myDC->SetInt("an int variable", 2);
 *		myDC->SetMyClass("this is my class", some::Ugly::Namespaced::MyClass());
 *
 *	4) Get data
 *		int my_int = myDC->GetInt("an int variable");
 *
 *	5) Check whether data has been set already [runs in O(n) , n := number of data]
 *		bool isMyClassSet = myDC->IsSetMyClass("this is my class");
 *
 *	6) Iterate data
 *		for (myDC->IntIteratorInit(); myDC->IntIteratorHasNext(); myDC->IntIteratorNext()) {
 *			const char *key = myDC->IntIteratorGetKey();
 *			int value = myDC->IntIteratorGetValue();
 *		}
 *
 *	8) Clean up
 *		FreeDataContainer(myDC);
 */

#include <map>

#define BeginDataContainersDefinition(containerType) \
    class DataContainer##containerType { \
	public: \
            DataContainer##containerType() {}; \
        private: \
            bool dummySemiColonHere

#define EndDataContainersDefinition }

#define DefineDataContainerFor(type, typeName) \
    private: \
        std::map<const char *, type> all##typeName##s; \
        std::map<const char *, type>::iterator typeName##iter; \
    public: \
        type Get##typeName (const char *s) { return all##typeName##s[s]; } \
        void Set##typeName (const char *s, type t) { all##typeName##s[s] = t; } \
        bool IsSet##typeName (const char *s) { return (all##typeName##s.find(s) != all##typeName##s.end()); } \
        void typeName##IteratorInit(void) { typeName##iter = all##typeName##s.begin(); } \
        bool typeName##IteratorHasNext(void) { return (typeName##iter != all##typeName##s.end()); } \
        void typeName##IteratorNext(void) { ++typeName##iter; } \
        const char *typeName##IteratorGetKey(void) { return ((*typeName##iter).first); } \
        type typeName##IteratorGetValue(void) { return ((*typeName##iter).second); } \
        char dummySemiColonHere##typeName

#define NewDataContainer(containerType, name) \
    DataContainer##containerType *name = new DataContainer##containerType()

#define FreeDataContainer(name) \
    delete name

#endif /* !DATACONTAINER_H */