/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 1.1, 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QTCONCURRENT_MAP_H
#define QTCONCURRENT_MAP_H

#include <QtCore/qglobal.h>

#ifndef QT_NO_CONCURRENT

#include <QtCore/qtconcurrentmapkernel.h>
#include <QtCore/qtconcurrentreducekernel.h>
#include <QtCore/qtconcurrentfunctionwrappers.h>
#include <QtCore/qstringlist.h>

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

QT_MODULE(Core)

#ifdef qdoc

namespace QtConcurrent {

    QFuture<void> map(Sequence &sequence, MapFunction function);
    QFuture<void> map(Iterator begin, Iterator end, MapFunction function);

    template <typename T>
    QFuture<T> mapped(const Sequence &sequence, MapFunction function);
    template <typename T>
    QFuture<T> mapped(ConstIterator begin, ConstIterator end, MapFunction function);

    template <typename T>
    QFuture<T> mappedReduced(const Sequence &sequence,
                             MapFunction function,
                             ReduceFunction function,
                             QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);
    template <typename T>
    QFuture<T> mappedReduced(ConstIterator begin,
                             ConstIterator end,
                             MapFunction function,
                             ReduceFunction function,
                             QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);

    void blockingMap(Sequence &sequence, MapFunction function);
    void blockingMap(Iterator begin, Iterator end, MapFunction function);

    template <typename T>
    T blockingMapped(const Sequence &sequence, MapFunction function);
    template <typename T>
    T blockingMapped(ConstIterator begin, ConstIterator end, MapFunction function);

    template <typename T>
    T blockingMappedReduced(const Sequence &sequence,
                            MapFunction function,
                            ReduceFunction function,
                            QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);
    template <typename T>
    T blockingMappedReduced(ConstIterator begin,
                            ConstIterator end,
                            MapFunction function,
                            ReduceFunction function,
                            QtConcurrent::ReduceOptions options = UnorderedReduce | SequentialReduce);

} // namespace QtConcurrent

#else

namespace QtConcurrent {

// map() on sequences
template <typename Sequence, typename MapFunctor>
QFuture<void> map(Sequence &sequence, MapFunctor map)
{
    return startMap(sequence.begin(), sequence.end(), QtPrivate::createFunctionWrapper(map));
}

// map() on iterators
template <typename Iterator, typename MapFunctor>
QFuture<void> map(Iterator begin, Iterator end, MapFunctor map)
{
    return startMap(begin, end, QtPrivate::createFunctionWrapper(map));
}

// mappedReduced() for sequences.
template <typename ResultType, typename Sequence, typename MapFunctor, typename ReduceFunctor>
QFuture<ResultType> mappedReduced(const Sequence &sequence,
                                  MapFunctor map,
                                  ReduceFunctor reduce,
                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
        (sequence,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options);
}

template <typename Sequence, typename MapFunctor, typename ReduceFunctor>
QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> mappedReduced(const Sequence &sequence,
                                  MapFunctor map,
                                  ReduceFunctor reduce,
                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
        (sequence,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options);
}

// mappedReduced() for iterators
template <typename ResultType, typename Iterator, typename MapFunctor, typename ReduceFunctor>
QFuture<ResultType> mappedReduced(Iterator begin,
                                  Iterator end,
                                  MapFunctor map,
                                  ReduceFunctor reduce,
                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
        (begin, end,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options);
}

template <typename Iterator, typename MapFunctor, typename ReduceFunctor>
QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> mappedReduced(Iterator begin,
                                  Iterator end,
                                  MapFunctor map,
                                  ReduceFunctor reduce,
                                  ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
    return startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
        (begin, end,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options);
}

// mapped() for sequences
template <typename Sequence, typename MapFunctor>
QFuture<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType> mapped(const Sequence &sequence, MapFunctor map)
{
    return startMapped<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType>(sequence, QtPrivate::createFunctionWrapper(map));
}

// mapped() for iterator ranges.
template <typename Iterator, typename MapFunctor>
QFuture<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType> mapped(Iterator begin, Iterator end, MapFunctor map)
{
    return startMapped<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType>(begin, end, QtPrivate::createFunctionWrapper(map));
}

// blockingMap() for sequences
template <typename Sequence, typename MapFunctor>
void blockingMap(Sequence &sequence, MapFunctor map)
{
    startMap(sequence.begin(), sequence.end(), QtPrivate::createFunctionWrapper(map)).startBlocking();
}

// blockingMap() for iterator ranges
template <typename Iterator, typename MapFunctor>
void blockingMap(Iterator begin, Iterator end, MapFunctor map)
{
    startMap(begin, end, QtPrivate::createFunctionWrapper(map)).startBlocking();
}

// blockingMappedReduced() for sequences
template <typename ResultType, typename Sequence, typename MapFunctor, typename ReduceFunctor>
ResultType blockingMappedReduced(const Sequence &sequence,
                                 MapFunctor map,
                                 ReduceFunctor reduce,
                                 ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
        (sequence,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options)
        .startBlocking();
}

template <typename MapFunctor, typename ReduceFunctor, typename Sequence>
typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingMappedReduced(const Sequence &sequence,
                                 MapFunctor map,
                                 ReduceFunctor reduce,
                                 ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
        (sequence,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options)
        .startBlocking();
}

// blockingMappedReduced() for iterator ranges
template <typename ResultType, typename Iterator, typename MapFunctor, typename ReduceFunctor>
ResultType blockingMappedReduced(Iterator begin,
                                 Iterator end,
                                 MapFunctor map,
                                 ReduceFunctor reduce,
                                 QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
{
    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, ResultType>
        (begin, end,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options)
        .startBlocking();
}

template <typename Iterator, typename MapFunctor, typename ReduceFunctor>
typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingMappedReduced(Iterator begin,
                                 Iterator end,
                                 MapFunctor map,
                                 ReduceFunctor reduce,
                                 QtConcurrent::ReduceOptions options = QtConcurrent::ReduceOptions(QtConcurrent::UnorderedReduce | QtConcurrent::SequentialReduce))
{
    return QtConcurrent::startMappedReduced<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType, typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
        (begin, end,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::createFunctionWrapper(reduce),
         options)
        .startBlocking();
}

// mapped() for sequences with a different putput sequence type.
template <typename OutputSequence, typename InputSequence, typename MapFunctor>
OutputSequence blockingMapped(const InputSequence &sequence, MapFunctor map)
{
    return blockingMappedReduced<OutputSequence>
        (sequence,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::PushBackWrapper(),
         QtConcurrent::OrderedReduce);
}

template <typename MapFunctor, typename InputSequence>
typename QtPrivate::MapResultType<InputSequence, MapFunctor>::ResultType blockingMapped(const InputSequence &sequence, MapFunctor map)
{
    typedef typename QtPrivate::MapResultType<InputSequence, MapFunctor>::ResultType OutputSequence;
    return blockingMappedReduced<OutputSequence>
        (sequence,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::PushBackWrapper(),
         QtConcurrent::OrderedReduce);
}

// mapped()  for iterator ranges
template <typename Sequence, typename Iterator, typename MapFunctor>
Sequence blockingMapped(Iterator begin, Iterator end, MapFunctor map)
{
    return blockingMappedReduced<Sequence>
        (begin, end,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::PushBackWrapper(),
         QtConcurrent::OrderedReduce);
}

template <typename Iterator, typename MapFunctor>
typename QtPrivate::MapResultType<Iterator, MapFunctor>::ResultType blockingMapped(Iterator begin, Iterator end, MapFunctor map)
{
    typedef typename QtPrivate::MapResultType<Iterator, MapFunctor>::ResultType OutputSequence;
    return blockingMappedReduced<OutputSequence>
        (begin, end,
         QtPrivate::createFunctionWrapper(map),
         QtPrivate::PushBackWrapper(),
         QtConcurrent::OrderedReduce);
}

} // namespace QtConcurrent

#endif // qdoc

QT_END_NAMESPACE
QT_END_HEADER

#endif // QT_NO_CONCURRENT

#endif
