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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
* Copyright (C) 2004, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "Traversal.h"
#include "CallbackResult.h"
#include "Node.h"
#include "NodeFilter.h"
#include <wtf/SetForScope.h>
namespace WebCore {
NodeIteratorBase::NodeIteratorBase(Node& rootNode, unsigned whatToShow, RefPtr<NodeFilter>&& nodeFilter)
: m_root(rootNode)
, m_filter(WTFMove(nodeFilter))
, m_whatToShow(whatToShow)
{
}
// https://dom.spec.whatwg.org/#concept-node-filter
ExceptionOr<unsigned short> NodeIteratorBase::acceptNodeSlowCase(Node& node)
{
ASSERT(m_filter);
if (m_isActive)
return Exception { ExceptionCode::InvalidStateError, "Recursive filters are not allowed"_s };
if (!matchesWhatToShow(node))
return NodeFilter::FILTER_SKIP;
SetForScope isActive(m_isActive, true);
auto callbackResult = m_filter->acceptNodeRethrowingException(node);
if (callbackResult.type() == CallbackResultType::ExceptionThrown)
return Exception { ExceptionCode::ExistingExceptionError };
return callbackResult.releaseReturnValue();
}
} // namespace WebCore
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