/*
 * nvbio
 * Copyright (c) 2011-2014, NVIDIA CORPORATION. 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 the NVIDIA CORPORATION 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 NVIDIA CORPORATION 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.
 */

#pragma once

#include <nvbio/basic/types.h>

namespace nvbio {

template <typename T>
struct pod_type { typedef T type; };

template <typename T>
NVBIO_FORCEINLINE NVBIO_DEVICE void write(T* ptr, const T& e)
{
    *(typename pod_type<T>::type*)ptr = (const typename pod_type<T>::type&)e;
}
template <typename T>
NVBIO_FORCEINLINE NVBIO_DEVICE T read(const T* ptr)
{
    return binary_cast<T>( *(const typename pod_type<T>::type*)ptr );
}

template <typename T>
struct pod_writer
{
    NVBIO_FORCEINLINE NVBIO_DEVICE 
    pod_writer() {}

    NVBIO_FORCEINLINE NVBIO_DEVICE 
    pod_writer(T& e) : ptr(&e) {}

    NVBIO_FORCEINLINE NVBIO_DEVICE 
    void operator=(const T& e) { write( ptr, e ); }

    T* ptr;
};

template <typename T>
struct pod_reader
{
    NVBIO_FORCEINLINE NVBIO_DEVICE 
    pod_reader() {}

    NVBIO_FORCEINLINE NVBIO_DEVICE 
    pod_reader(const T& e) : ptr(&e) {}

    NVBIO_FORCEINLINE NVBIO_DEVICE 
    operator T() { return read( ptr ); }

    const T* ptr;
};

} // namespace nvbio
