/*
 * Copyright (C) 2018 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 "RenderTreeBuilderContinuation.h"

#include "RenderBoxModelObject.h"

namespace WebCore {

RenderTreeBuilder::Continuation::Continuation(RenderTreeBuilder& builder)
    : m_builder(builder)
{
}

void RenderTreeBuilder::Continuation::cleanupOnDestroy(RenderBoxModelObject& renderer)
{
    if (!renderer.continuation() || renderer.isContinuation()) {
        if (renderer.hasContinuationChainNode())
            renderer.removeFromContinuationChain();
        return;
    }

    ASSERT(renderer.hasContinuationChainNode());
    ASSERT(renderer.continuationChainNode());
    auto& continuationChainNode = *renderer.continuationChainNode();
    while (continuationChainNode.next)
        m_builder.destroy(*continuationChainNode.next->renderer);
    renderer.removeFromContinuationChain();
}

}