qcomparingaggregator_p.h

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//
//  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

#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
{
    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"

    typedef ComparingAggregator<AtomicComparator::OperatorGreaterThan, AtomicComparator::GreaterThan> MaxFN;

    typedef ComparingAggregator<AtomicComparator::OperatorLessThan, AtomicComparator::LessThan> MinFN;
}

QT_END_NAMESPACE

QT_END_HEADER

#endif