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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_Decimal_H
#define Patternist_Decimal_H
#include "qschemanumeric_p.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
/**
* Defined in QtCore's qlocale.cpp.
*/
extern char *qdtoa(double d, int mode, int ndigits, int *decpt, int *sign, char **rve, char **resultp);
namespace QPatternist
{
/**
* @short Implements the value instance of the @c xs:decimal type.
*
* @author Frans Englich <fenglich@trolltech.com>
* @ingroup Patternist_xdm
* @todo Documentation is missing/incomplete
*/
class Decimal : public Numeric
{
public:
static Decimal::Ptr fromValue(const xsDecimal num);
/**
* Creates a Decimal from the lexical representation of @c xs:decimal stored in
* @p strNumeric.
*
* A possible optimization is to create an Integer if the string ends
* with ".0". But this is not conformant. For example, the user writes N.0
* which according to the specification is an xs:decimal, but where the
* expression is, is an xs:integer is required. That would pass with
* such an optimization.
*/
static AtomicValue::Ptr fromLexical(const QString &strNumeric);
/**
* Gets the Effective %Boolean Value of this number.
*
* @returns @c false if the number is 0 or @c NaN, otherwise @c true.
*/
bool evaluateEBV(const QExplicitlySharedDataPointer<DynamicContext> &) const;
virtual QString stringValue() const;
/**
* @returns always BuiltinTypes::xsDecimal
*/
virtual ItemType::Ptr type() const;
virtual xsDouble toDouble() const;
virtual xsInteger toInteger() const;
virtual xsFloat toFloat() const;
virtual xsDecimal toDecimal() const;
virtual qulonglong toUnsignedInteger() const;
virtual Numeric::Ptr round() const;
virtual Numeric::Ptr roundHalfToEven(const xsInteger scale) const;
virtual Numeric::Ptr floor() const;
virtual Numeric::Ptr ceiling() const;
virtual Numeric::Ptr abs() const;
/**
* @returns always @c false, xs:decimal doesn't have
* not-a-number in its value space.
*/
virtual bool isNaN() const;
/**
* @returns always @c false, xs:decimal doesn't have
* infinity in its value space.
*/
virtual bool isInf() const;
virtual Item toNegated() const;
/**
* Converts @p value into a canonical string representation for @c xs:decimal. This
* function is used internally by various classes. Users probably wants to call
* stringValue() which in turn calls this function.
*/
static QString toString(const xsDecimal value);
virtual bool isSigned() const;
protected:
Decimal(const xsDecimal num);
private:
const xsDecimal m_value;
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
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