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 * 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
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 *     its contributors may be used to endorse or promote products derived
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 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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#pragma once

#include "AsyncNodeDeletionQueue.h"
#include "ContainerNode.h"
#include "Element.h"
#include "HTMLElement.h"
#include "HTMLNames.h"
#include "NodeName.h"

namespace WebCore {

ALWAYS_INLINE AsyncNodeDeletionQueue::AsyncNodeDeletionQueue() = default;
ALWAYS_INLINE AsyncNodeDeletionQueue::~AsyncNodeDeletionQueue() = default;

ALWAYS_INLINE void AsyncNodeDeletionQueue::addIfSubtreeSizeIsUnderLimit(NodeVector&& children, unsigned subTreeSize)
{
    if (m_nodeCount + subTreeSize > s_maxSizeAsyncNodeDeletionQueue)
        return;
    m_nodeCount += subTreeSize;
    m_queue.appendVector(WTFMove(children));
}

ALWAYS_INLINE void AsyncNodeDeletionQueue::deleteNodesNow()
{
    m_queue.clear();
    m_nodeCount = 0;
}

ALWAYS_INLINE ContainerNode::CanDelayNodeDeletion AsyncNodeDeletionQueue::canNodeBeDeletedAsync(const Node& node)
{
    if (!dynamicDowncast<HTMLElement>(node))
        return ContainerNode::CanDelayNodeDeletion::Yes;
    if (isNodeLikelyLarge(node))
        return ContainerNode::CanDelayNodeDeletion::No;
    return ContainerNode::CanDelayNodeDeletion::Yes;
}

ALWAYS_INLINE bool AsyncNodeDeletionQueue::isNodeLikelyLarge(const Node& node)
{
    ASSERT(node.isElementNode());

    switch (downcast<Element>(node).elementName()) {
    case NodeName::HTML_audio:
    case NodeName::HTML_body:
    case NodeName::HTML_canvas:
    case NodeName::HTML_iframe:
    case NodeName::HTML_img:
    case NodeName::HTML_object:
    case NodeName::HTML_source:
    case NodeName::HTML_track:
    case NodeName::HTML_video:
    case NodeName::SVG_svg:
        return true;
    default:
        return false;
    }
}

} // namespace WebCore
