source: trunk/src/xmlpatterns/data/qboolean_p.h@ 780

Last change on this file since 780 was 651, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.2 sources.

File size: 4.2 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtXmlPatterns module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42//
43// W A R N I N G
44// -------------
45//
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.
49//
50// We mean it.
51
52#ifndef Patternist_Boolean_H
53#define Patternist_Boolean_H
54
55#include "qitem_p.h"
56
57QT_BEGIN_HEADER
58
59QT_BEGIN_NAMESPACE
60
61namespace QPatternist
62{
63 /**
64 * @short Implements the value instance of the @c xs:boolean type.
65 *
66 * @author Frans Englich <[email protected]>
67 * @ingroup Patternist_xdm
68 */
69 class Q_AUTOTEST_EXPORT Boolean : public AtomicValue
70 {
71 public:
72 typedef AtomicValue::Ptr Ptr;
73
74 /**
75 * @returns the boolean value this Boolean represents
76 */
77 static bool evaluateEBV(const Item::Iterator::Ptr &e,
78 const QExplicitlySharedDataPointer<DynamicContext> &);
79
80 static bool evaluateEBV(const Item &first,
81 const Item::Iterator::Ptr &e,
82 const QExplicitlySharedDataPointer<DynamicContext> &);
83
84 static bool evaluateEBV(const Item &item,
85 const QExplicitlySharedDataPointer<DynamicContext> &context);
86
87 virtual QString stringValue() const;
88
89 /**
90 * @returns a Boolean object instantiating @p value. Use True() or False()
91 * if you already know what value you need.
92 */
93 static Boolean::Ptr fromValue(const bool value);
94
95 /**
96 * Creates a boolean value from a lexical representation. "true" and "1"
97 * becomes @c true, while "false" and "0" becomes @c false.
98 */
99 static AtomicValue::Ptr fromLexical(const QString &val);
100
101 /**
102 * Get the Effective %Boolean Value of this boolean value. For <tt>xs:boolean</tt>, this
103 * is simply the value.
104 */
105 virtual bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
106
107 virtual ItemType::Ptr type() const;
108
109 inline bool value() const
110 {
111 return m_value;
112 }
113
114 protected:
115 friend class CommonValues;
116 Boolean(const bool value);
117
118 private:
119 const bool m_value;
120 };
121}
122
123QT_END_NAMESPACE
124QT_END_HEADER
125
126#endif
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