#ifndef RCPOINTE_H
#define RCPOINTE_H

#include <iostream.h>
#if defined(RCPOINTER_TESTDLL)
#define RCPOINTER_CLASS class
#elif defined (RCPOINTER_BUILDDLL)
#define RCPOINTER_CLASS class _export
#else
#define RCPOINTER_CLASS class _import
#endif

// RcPointer is a class that can be used to create counted
// pointers to the class X. This class is intialized with
// a pointer to X, but acts as a proxy for that pointer.
// It is responsible for keeping track of the number of objects
// and functions actively looking at the pointer. When the
// number of users is zero, the pointer is deleted.

template <class X>
RCPOINTER_CLASS RcPointer
{
public:
	RcPointer():stor(NULL){}
	RcPointer(X *p):stor(new Stor(p)){}
	RcPointer(const RcPointer &b)
		{if ((stor = b.stor)!=NULL) stor->rc++;}
	const RcPointer& operator = (const RcPointer &b)
	{
		if (b.stor) b.stor->rc++;
		free();
		stor = b.stor;
		return *this;
	}
	~RcPointer(){free();}
	X& operator [](int i){return (stor->pval)[i];}
	X* operator ->()
		{if (!stor) throw "Pointer not initialized"; return stor->pval;}
	X& operator*()
		{if (!stor) throw "Pointer not initialized"; return *(stor->pval);}

	X* operator ->()const
		{if (!stor) throw "Pointer not initialized"; return stor->pval;}
	X& operator*()const
		{if (!stor) throw "Pointer not initialized"; return *(stor->pval);}
	operator const void*() const
		{return stor ? this : 0;}
protected:
	RCPOINTER_CLASS Stor
	{
   public:
		unsigned long int rc;
		X *pval;
		Stor(X *px):rc(1),pval(px){}
		~Stor(){delete pval;}
	};
	void free()
		{if(stor && --stor->rc == 0) delete stor;}
	Stor *stor;
};
#endif