sky/engine/wtf/ArrayBufferView.cpp

/*
 * Copyright (C) 2009 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 COMPUTER, INC. ``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 COMPUTER, INC. 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.
 */

#include "sky/engine/wtf/ArrayBufferView.h"

#include "sky/engine/wtf/ArrayBuffer.h"

namespace WTF {

ArrayBufferView::ArrayBufferView(PassRefPtr<ArrayBuffer> buffer,
                       unsigned byteOffset)
        : m_byteOffset(byteOffset)
        , m_isNeuterable(true)
        , m_buffer(buffer)
        , m_prevView(0)
        , m_nextView(0)
{
    m_baseAddress = m_buffer ? (static_cast<char*>(m_buffer->data()) + m_byteOffset) : 0;
    if (m_buffer)
        m_buffer->addView(this);
}

ArrayBufferView::~ArrayBufferView()
{
    if (m_buffer)
        m_buffer->removeView(this);
}

void ArrayBufferView::neuter()
{
    m_buffer = nullptr;
    m_byteOffset = 0;
}

const char* ArrayBufferView::typeName()
{
    switch (type()) {
    case TypeInt8:
        return "Int8";
        break;
    case TypeUint8:
        return "UInt8";
        break;
    case TypeUint8Clamped:
        return "UInt8Clamped";
        break;
    case TypeInt16:
        return "Int16";
        break;
    case TypeUint16:
        return "UInt16";
        break;
    case TypeInt32:
        return "Int32";
        break;
    case TypeUint32:
        return "Uint32";
        break;
    case TypeFloat32:
        return "Float32";
        break;
    case TypeFloat64:
        return "Float64";
        break;
    case TypeDataView:
        return "DataView";
        break;
    }
    ASSERT_NOT_REACHED();
    return "Unknown";
}

}