/*
 * Copyright (C) 2010 Apple 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
 */

#include "config.h"
#include "DataReference.h"

#include "Decoder.h"
#include "Encoder.h"

namespace IPC {

void DataReference::encode(Encoder& encoder) const
{
    encoder.encodeVariableLengthByteArray(*this);
}

bool DataReference::decode(Decoder& decoder, DataReference& dataReference)
{
    return decoder.decodeVariableLengthByteArray(dataReference);
}

void SharedBufferDataReference::encode(Encoder& encoder) const
{
    uint64_t bufferSize = static_cast<uint64_t>(m_buffer->size());
    encoder.reserve(bufferSize + sizeof(uint64_t));
    encoder << bufferSize;

    const char* partialData;
    unsigned position = 0;
    while (position < bufferSize) {
        unsigned bytesToWrite = m_buffer->getSomeData(partialData, position);
        encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(partialData), bytesToWrite, 1);
        position += bytesToWrite;
    }
}

} // namespace IPC
