Source/bindings/v8/RetainedDOMInfo.cpp

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "bindings/v8/RetainedDOMInfo.h"

#include "core/dom/ContainerNode.h"
#include "core/dom/NodeTraversal.h"

namespace WebCore {

RetainedDOMInfo::RetainedDOMInfo(Node* root)
    : m_root(root)
{
    ASSERT(m_root);
}

RetainedDOMInfo::~RetainedDOMInfo()
{
}

void RetainedDOMInfo::Dispose()
{
    delete this;
}

bool RetainedDOMInfo::IsEquivalent(v8::RetainedObjectInfo* other)
{
    ASSERT(other);
    if (other == this)
        return true;
    if (strcmp(GetLabel(), other->GetLabel()))
        return false;
    return static_cast<WebCore::RetainedObjectInfo*>(other)->GetEquivalenceClass() == this->GetEquivalenceClass();
}

intptr_t RetainedDOMInfo::GetHash()
{
    return PtrHash<void*>::hash(m_root);
}

const char* RetainedDOMInfo::GetGroupLabel()
{
    return m_root->inDocument() ? "(Document DOM trees)" : "(Detached DOM trees)";
}

const char* RetainedDOMInfo::GetLabel()
{
    return m_root->inDocument() ? "Document DOM tree" : "Detached DOM tree";
}

intptr_t RetainedDOMInfo::GetElementCount()
{
    intptr_t count = 1;
    Node* current = m_root;
    while (current) {
        current = NodeTraversal::next(current, m_root);
        ++count;
    }
    return count;
}

intptr_t RetainedDOMInfo::GetEquivalenceClass()
{
    return reinterpret_cast<intptr_t>(m_root);
}

} // namespace WebCore