1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** All rights reserved.
5 ** Contact: http://www.qt-project.org/
7 ** This file is part of the QtXmlPatterns module of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:LGPL$
10 ** GNU Lesser General Public License Usage
11 ** This file may be used under the terms of the GNU Lesser General Public
12 ** License version 2.1 as published by the Free Software Foundation and
13 ** appearing in the file LICENSE.LGPL included in the packaging of this
14 ** file. Please review the following information to ensure the GNU Lesser
15 ** General Public License version 2.1 requirements will be met:
16 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
18 ** In addition, as a special exception, Nokia gives you certain additional
19 ** rights. These rights are described in the Nokia Qt LGPL Exception
20 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
22 ** GNU General Public License Usage
23 ** Alternatively, this file may be used under the terms of the GNU General
24 ** Public License version 3.0 as published by the Free Software Foundation
25 ** and appearing in the file LICENSE.GPL included in the packaging of this
26 ** file. Please review the following information to ensure the GNU General
27 ** Public License version 3.0 requirements will be met:
28 ** http://www.gnu.org/copyleft/gpl.html.
31 ** Alternatively, this file may be used in accordance with the terms and
32 ** 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_Boolean_H
53 #define Patternist_Boolean_H
55 #include <private/qitem_p.h>
64 * @short Implements the value instance of the @c xs:boolean type.
66 * @author Frans Englich <frans.englich@nokia.com>
67 * @ingroup Patternist_xdm
69 class Q_AUTOTEST_EXPORT Boolean : public AtomicValue
72 typedef AtomicValue::Ptr Ptr;
75 * @returns the boolean value this Boolean represents
77 static bool evaluateEBV(const Item::Iterator::Ptr &e,
78 const QExplicitlySharedDataPointer<DynamicContext> &);
80 static bool evaluateEBV(const Item &first,
81 const Item::Iterator::Ptr &e,
82 const QExplicitlySharedDataPointer<DynamicContext> &);
84 static bool evaluateEBV(const Item &item,
85 const QExplicitlySharedDataPointer<DynamicContext> &context);
87 virtual QString stringValue() const;
90 * @returns a Boolean object instantiating @p value. Use True() or False()
91 * if you already know what value you need.
93 static Boolean::Ptr fromValue(const bool value);
96 * Creates a boolean value from a lexical representation. "true" and "1"
97 * becomes @c true, while "false" and "0" becomes @c false.
99 static AtomicValue::Ptr fromLexical(const QString &val);
102 * Get the Effective %Boolean Value of this boolean value. For <tt>xs:boolean</tt>, this
103 * is simply the value.
105 virtual bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
107 virtual ItemType::Ptr type() const;
109 inline bool value() const
115 friend class CommonValues;
116 Boolean(const bool value);