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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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 <private/qabstractfloat_p.h>
#include <private/qdecimal_p.h>
#include <private/qcastingplatform_p.h>
#include <private/qcomparisonplatform_p.h>
#include <private/qliteral_p.h>
#include <private/qaggregator_p.h>
#include <private/quntypedatomicconverter_p.h>
#include <private/qpatternistlocale_p.h>
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 <frans.englich@nokia.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_tpl_p.h"
/**
* @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
#endif
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