Another Copy Pointer

/*
 
 Copyright (c) 2013 Gergely Mancz
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 http://www.opensource.org/licenses/mit-license.html
 
 */

#ifndef __BITWISECOPY_H__
#define __BITWISECOPY_H__

#include "../supportsbitwisecopy.h"

namespace Base
{
	
namespace CopyHelper
{

	/**
	 * \brief Using memcpy for POD or fundamental types.
	 */
	template <class _Ty, template <class> class _TAllocator = std::allocator>
	class BitwiseCopy
	{
	public:
		
		enum {
			isAccessible = SupportsBitwiseCopy<_Ty>::result
		};
		
		static _Ty* copy(const _Ty* pObject)
		{
            LOKI_STATIC_CHECK(!!SupportsBitwiseCopy<_Ty>::result, _BitwiseCopy_Not_Allowed_For_This_Type);
            
			_TAllocator<_Ty> tmpAllocator;
			_Ty* pTy = tmpAllocator.allocate(1);
			if (!pTy)
				return 0;
			// for bitwise copy, we can call memcpy instead of construct of the allocator
			memcpy(pTy, pObject, sizeof(_Ty));

			return pTy;
		}
		
		static void destroy(_Ty* pObject)
		{
            LOKI_STATIC_CHECK(!!SupportsBitwiseCopy<_Ty>::result, _BitwiseCopy_Not_Allowed_For_This_Type);

			if (!pObject) // not permitted to be null
				return;
			
			_TAllocator<_Ty> tmpAllocator;
			tmpAllocator.deallocate(pObject, 1);
		}
		
	private:
		BitwiseCopy();
		BitwiseCopy(const BitwiseCopy&);
		BitwiseCopy& operator=(const BitwiseCopy&);
		
	};

} // CopyHelper ns

} // Base ns

#endif // __BITWISECOPY_H__