1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
14 ** General Public License version 2.1 requirements will be met:
15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
17 ** In addition, as a special exception, Nokia gives you certain additional
18 ** rights. These rights are described in the Nokia Qt LGPL Exception
19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
24 ** and appearing in the file LICENSE.GPL included in the packaging of this
25 ** file. Please review the following information to ensure the GNU General
26 ** Public License version 3.0 requirements will be met:
27 ** http://www.gnu.org/copyleft/gpl.html.
30 ** Alternatively, this file may be used in accordance with the terms and
31 ** conditions contained in a signed written agreement between you and Nokia.
40 ****************************************************************************/
46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
52 #ifndef Patternist_ParentNodeAxis_H
53 #define Patternist_ParentNodeAxis_H
55 #include <private/qemptycontainer_p.h>
64 * @short Corresponds to the expression <tt>parent::node()</tt>.
66 * This AST node is now useless, due to refactorings. Prevously we had
67 * Item QAbstractXmlNodeModel::parent(), which didn't have the overhead of
68 * allocating an iterator for a single node. However, in order to stream
69 * line the API it is now gone and hence the node performs exactly the same
72 * @author Frans Englich <frans.englich@nokia.com>
73 * @ingroup Patternist_expressions
75 class ParentNodeAxis : public EmptyContainer
78 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
81 * @returns always DisableElimination
83 virtual Expression::Properties properties() const;
85 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
88 * @returns always CommonSequenceTypes::ExactlyOneNode;
90 virtual SequenceType::Ptr staticType() const;
93 * @returns always BuiltinTypes::node;
95 virtual ItemType::Ptr expectedContextItemType() const;