1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtXmlPatterns module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49
50#ifndef Patternist_IfThenClause_H
51#define Patternist_IfThenClause_H
52
53#include <private/qtriplecontainer_p.h>
54
55QT_BEGIN_NAMESPACE
56
57namespace QPatternist
58{
59 /**
60 * @short Implements XPath 2.0's conditional expression <tt>if([expr]) then [expr] else [expr]</tt>.
61 *
62 * @see <a href="http://www.w3.org/TR/xpath20/#id-conditionals">XML Path Language (XPath) 2.0,
63 * 3.8 Conditional Expressions</a>
64 * @author Frans Englich <frans.englich@nokia.com>
65 * @ingroup Patternist_expressions
66 */
67 class IfThenClause : public TripleContainer
68 {
69 public:
70 IfThenClause(const Expression::Ptr &test,
71 const Expression::Ptr &then,
72 const Expression::Ptr &el);
73
74 virtual bool evaluateEBV(const DynamicContext::Ptr &context) const;
75 virtual Item::Iterator::Ptr evaluateSequence(const DynamicContext::Ptr &context) const;
76 virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const;
77 virtual void evaluateToSequenceReceiver(const DynamicContext::Ptr &context) const;
78
79 virtual SequenceType::List expectedOperandTypes() const;
80 virtual Expression::Ptr compress(const StaticContext::Ptr &context);
81
82 virtual SequenceType::Ptr staticType() const;
83 virtual ExpressionVisitorResult::Ptr accept(const ExpressionVisitor::Ptr &visitor) const;
84 /**
85 * @returns IDIfThenClause
86 */
87 virtual ID id() const;
88 virtual QList<QExplicitlySharedDataPointer<OptimizationPass> > optimizationPasses() const;
89 //virtual Properties properties() const;
90 };
91}
92
93QT_END_NAMESPACE
94
95#endif
96

source code of qtxmlpatterns/src/xmlpatterns/expr/qifthenclause_p.h