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Diffstat (limited to 'src/xmlpatterns/data/qdecimal_p.h')
| -rw-r--r-- | src/xmlpatterns/data/qdecimal_p.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/xmlpatterns/data/qdecimal_p.h b/src/xmlpatterns/data/qdecimal_p.h new file mode 100644 index 0000000000..2552b21c8a --- /dev/null +++ b/src/xmlpatterns/data/qdecimal_p.h @@ -0,0 +1,156 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// 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 |