/* -----------------------------------------------------------------------------
	GSFramework
	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
----------------------------------------------------------------------------- */


#ifndef	__NAUTO_PTR__
#define __NAUTO_PTR__


		#include "alloc/ialloc.h"
		#include "billing/billing.h"


namespace GS {

/*!
	@short	Auto pointer.
	@author	Emmanuel Julien (ejulien@gsworks.fr)
*/
template <class T> class AutoPtr
{
private:

		T			*o;

public:

inline	operator	T*() const
		{	return o;	}
inline	T			*c_ptr() const
		{	return o;	}

inline	bool		IsNull() const	{	return o ? false : true;	}
inline	bool		IsValid() const	{	return o ? true : false;	}

		T			*operator = (T *p)
		{
			if	(o != p)
			{
				delete(o);
				o = p;
			}
			return o;
		}

inline	T			&operator[] (size_t n)	{	return o[n];	}

inline	bool		operator == (const T *p) const
		{	return o == p;	}
inline	bool		operator != (const T *p) const
		{	return o != p;	}

inline	T			*operator -> () const
		{	return o;	}
inline	T			&operator * () const
		{	return *o;	}

inline	T			*Detach()
		{
			T	*p = o;
			o = 0;
			return p;
		}

		explicit AutoPtr(T *p = 0) : o(p)
		{}
		~AutoPtr()
		{
			delete(o);
			o = 0;
		}
};

} // GS


#endif	// __NAUTO_PTR__