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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef Patternist_Boolean_H
#define Patternist_Boolean_H
#include "qitem_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternist
{
/**
* @short Implements the value instance of the @c xs:boolean type.
*
* @author Frans Englich <frans.englich@nokia.com>
* @ingroup Patternist_xdm
*/
class Q_AUTOTEST_EXPORT Boolean : public AtomicValue
{
public:
typedef AtomicValue::Ptr Ptr;
/**
* @returns the boolean value this Boolean represents
*/
static bool evaluateEBV(const Item::Iterator::Ptr &e,
const QExplicitlySharedDataPointer<DynamicContext> &);
static bool evaluateEBV(const Item &first,
const Item::Iterator::Ptr &e,
const QExplicitlySharedDataPointer<DynamicContext> &);
static bool evaluateEBV(const Item &item,
const QExplicitlySharedDataPointer<DynamicContext> &context);
virtual QString stringValue() const;
/**
* @returns a Boolean object instantiating @p value. Use True() or False()
* if you already know what value you need.
*/
static Boolean::Ptr fromValue(const bool value);
/**
* Creates a boolean value from a lexical representation. "true" and "1"
* becomes @c true, while "false" and "0" becomes @c false.
*/
static AtomicValue::Ptr fromLexical(const QString &val);
/**
* Get the Effective %Boolean Value of this boolean value. For <tt>xs:boolean</tt>, this
* is simply the value.
*/
virtual bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
virtual ItemType::Ptr type() const;
inline bool value() const
{
return m_value;
}
protected:
friend class CommonValues;
Boolean(const bool value);
private:
const bool m_value;
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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