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// Copyright 2011-2022, Molecular Matters GmbH <[email protected]>
// See LICENSE.txt for licensing details (2-clause BSD License: https://opensource.org/licenses/BSD-2-Clause)

#pragma once

#include "PDB_Macros.h"
#include "PDB_TypeTraits.h"


namespace PDB
{
	namespace Pointer
	{
		// Offsets any pointer by a given number of bytes.
		template <typename T, typename U, typename V>
		PDB_NO_DISCARD inline T Offset(U* anyPointer, V howManyBytes) PDB_NO_EXCEPT
		{
			static_assert(PDB::is_pointer<T>::value == true, "Type T must be a pointer type.");

			union
			{
				T as_T;
				U* as_U_ptr;
				char* as_char_ptr;
			};

			as_U_ptr = anyPointer;
			as_char_ptr += howManyBytes;

			return as_T;
		}
	}
}