| /* |
| * Copyright (C) 1999 Lars Knoll ([email protected]) |
| * Copyright (C) 2000 Frederik Holljen ([email protected]) |
| * Copyright (C) 2001 Peter Kelly ([email protected]) |
| * Copyright (C) 2006 Samuel Weinig ([email protected]) |
| * 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(WTF::move(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 |
