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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the declaration for a few templated function to help with
// pointers.
#ifndef O3D_CORE_CROSS_POINTER_UTILS_H_
#define O3D_CORE_CROSS_POINTER_UTILS_H_
#include "core/cross/types.h"
namespace o3d {
// Adds an arbitrary byte offset to a typed pointer.
template <typename T>
T AddPointerOffset(T pointer, unsigned offset) {
return reinterpret_cast<T>(
const_cast<uint8*>(reinterpret_cast<const uint8*>(pointer) + offset));
}
// Creates a typed pointer from a void pointer and an offset.
template <typename T>
T PointerFromVoidPointer(const void* pointer, unsigned offset) {
return reinterpret_cast<T>(
const_cast<uint8*>(reinterpret_cast<const uint8*>(pointer) + offset));
}
} // namespace o3d
#endif // O3D_CORE_CROSS_POINTER_UTILS_H_
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