diff options
Diffstat (limited to 'src/xmlpatterns/functions/qcomparingaggregator_p.h')
| -rw-r--r-- | src/xmlpatterns/functions/qcomparingaggregator_p.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/xmlpatterns/functions/qcomparingaggregator_p.h b/src/xmlpatterns/functions/qcomparingaggregator_p.h new file mode 100644 index 0000000..374fa7a --- /dev/null +++ b/src/xmlpatterns/functions/qcomparingaggregator_p.h @@ -0,0 +1,146 @@ +/**************************************************************************** +** +** 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_ComparingAggregator_H +#define Patternist_ComparingAggregator_H + +/** + * @file qcomparingaggregator_p.h + * @short Contains the implementations for the functions <tt>fn:max()</tt>, MaxFN, + * and <tt>fn:min()</tt>, MinFN, and the class ComparingAggregator. + */ + +#include "qabstractfloat_p.h" +#include "qdecimal_p.h" +#include "qcastingplatform_p.h" +#include "qcomparisonplatform_p.h" +#include "qliteral_p.h" +#include "qaggregator_p.h" +#include "quntypedatomicconverter_p.h" +#include "qpatternistlocale_p.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +namespace QPatternist +{ + /** + * @short Base class for the implementations of the <tt>fn:min()</tt> and <tt>fn:max()</tt> function. + * + * What function that more specifically is + * followed, depends on how the constructor is called. + * + * @see MaxFN + * @see MinFN + * @ingroup Patternist_functions + * @author Frans Englich <fenglich@trolltech.com> + */ + template <AtomicComparator::Operator oper, AtomicComparator::ComparisonResult result> + class ComparingAggregator : public Aggregator, + public ComparisonPlatform<ComparingAggregator<oper, result>, + true, AtomicComparator::AsValueComparison, + ReportContext::FORG0006>, + public CastingPlatform<ComparingAggregator<oper, result>, true> + { + public: + virtual Item evaluateSingleton(const DynamicContext::Ptr &context) const; + virtual Expression::Ptr typeCheck(const StaticContext::Ptr &context, + const SequenceType::Ptr &reqType); + + inline AtomicComparator::Operator operatorID() const + { + return oper; + } + + inline ItemType::Ptr targetType() const + { + return BuiltinTypes::xsDouble; + } + + private: + inline Item applyNumericPromotion(const Item &old, + const Item &nev, + const Item &newVal) const; + + using ComparisonPlatform<ComparingAggregator<oper, result>, + true, + AtomicComparator::AsValueComparison, + ReportContext::FORG0006>::comparator; + using ComparisonPlatform<ComparingAggregator<oper, result>, + true, + AtomicComparator::AsValueComparison, + ReportContext::FORG0006>::fetchComparator; + using CastingPlatform<ComparingAggregator<oper, result>, true>::cast; + }; + +#include "qcomparingaggregator.cpp" + + /** + * @short An instantiation of ComparingAggregator suitable for <tt>fn:max()</tt>. + * + * @ingroup Patternist_functions + */ + typedef ComparingAggregator<AtomicComparator::OperatorGreaterThan, AtomicComparator::GreaterThan> MaxFN; + + /** + * @short An instantiation of ComparingAggregator suitable for <tt>fn:max()</tt>. + * + * @ingroup Patternist_functions + */ + typedef ComparingAggregator<AtomicComparator::OperatorLessThan, AtomicComparator::LessThan> MinFN; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif |