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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtConcurrent module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QTCONCURRENT_FILTER_H
#define QTCONCURRENT_FILTER_H
#include <QtConcurrent/qtconcurrent_global.h>
#if !defined(QT_NO_CONCURRENT) || defined(Q_CLANG_QDOC)
#include <QtConcurrent/qtconcurrentfilterkernel.h>
#include <QtConcurrent/qtconcurrentfunctionwrappers.h>
QT_BEGIN_NAMESPACE
namespace QtConcurrent {
//! [QtConcurrent-1]
template <typename Sequence, typename KeepFunctor, typename ReduceFunctor>
ThreadEngineStarter<void> filterInternal(Sequence &sequence, KeepFunctor keep, ReduceFunctor reduce)
{
typedef FilterKernel<Sequence, KeepFunctor, ReduceFunctor> KernelType;
return startThreadEngine(new KernelType(sequence, keep, reduce));
}
// filter() on sequences
template <typename Sequence, typename KeepFunctor>
QFuture<void> filter(Sequence &sequence, KeepFunctor keep)
{
return filterInternal(sequence, QtPrivate::createFunctionWrapper(keep), QtPrivate::PushBackWrapper());
}
// filteredReduced() on sequences
template <typename ResultType, typename Sequence, typename KeepFunctor, typename ReduceFunctor>
QFuture<ResultType> filteredReduced(const Sequence &sequence,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
return startFilteredReduced<ResultType>(sequence, QtPrivate::createFunctionWrapper(keep), QtPrivate::createFunctionWrapper(reduce), options);
}
#ifndef Q_CLANG_QDOC
template <typename Sequence, typename KeepFunctor, typename ReduceFunctor>
QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> filteredReduced(const Sequence &sequence,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
return startFilteredReduced<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
(sequence,
QtPrivate::createFunctionWrapper(keep),
QtPrivate::createFunctionWrapper(reduce),
options);
}
#endif
// filteredReduced() on iterators
template <typename ResultType, typename Iterator, typename KeepFunctor, typename ReduceFunctor>
QFuture<ResultType> filteredReduced(Iterator begin,
Iterator end,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
return startFilteredReduced<ResultType>(begin, end, QtPrivate::createFunctionWrapper(keep), QtPrivate::createFunctionWrapper(reduce), options);
}
#ifndef Q_CLANG_QDOC
template <typename Iterator, typename KeepFunctor, typename ReduceFunctor>
QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> filteredReduced(Iterator begin,
Iterator end,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
return startFilteredReduced<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
(begin, end,
QtPrivate::createFunctionWrapper(keep),
QtPrivate::createFunctionWrapper(reduce),
options);
}
#endif
// filtered() on sequences
template <typename Sequence, typename KeepFunctor>
QFuture<typename Sequence::value_type> filtered(const Sequence &sequence, KeepFunctor keep)
{
return startFiltered(sequence, QtPrivate::createFunctionWrapper(keep));
}
// filtered() on iterators
template <typename Iterator, typename KeepFunctor>
QFuture<typename qValueType<Iterator>::value_type> filtered(Iterator begin, Iterator end, KeepFunctor keep)
{
return startFiltered(begin, end, QtPrivate::createFunctionWrapper(keep));
}
// blocking filter() on sequences
template <typename Sequence, typename KeepFunctor>
void blockingFilter(Sequence &sequence, KeepFunctor keep)
{
QFuture<void> future =
filterInternal(sequence, QtPrivate::createFunctionWrapper(keep), QtPrivate::PushBackWrapper());
future.waitForFinished();
}
// blocking filteredReduced() on sequences
template <typename ResultType, typename Sequence, typename KeepFunctor, typename ReduceFunctor>
ResultType blockingFilteredReduced(const Sequence &sequence,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
QFuture<ResultType> future =
startFilteredReduced<ResultType>(sequence, QtPrivate::createFunctionWrapper(keep), QtPrivate::createFunctionWrapper(reduce), options);
return future.result();
}
#ifndef Q_CLANG_QDOC
template <typename Sequence, typename KeepFunctor, typename ReduceFunctor>
typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingFilteredReduced(const Sequence &sequence,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
return blockingFilteredReduced<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
(sequence,
QtPrivate::createFunctionWrapper(keep),
QtPrivate::createFunctionWrapper(reduce),
options);
}
#endif
// blocking filteredReduced() on iterators
template <typename ResultType, typename Iterator, typename KeepFunctor, typename ReduceFunctor>
ResultType blockingFilteredReduced(Iterator begin,
Iterator end,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
QFuture<ResultType> future = startFilteredReduced<ResultType>(begin, end,
QtPrivate::createFunctionWrapper(keep),
QtPrivate::createFunctionWrapper(reduce),
options);
return future.result();
}
#ifndef Q_CLANG_QDOC
template <typename Iterator, typename KeepFunctor, typename ReduceFunctor>
typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType blockingFilteredReduced(Iterator begin,
Iterator end,
KeepFunctor keep,
ReduceFunctor reduce,
ReduceOptions options = ReduceOptions(UnorderedReduce | SequentialReduce))
{
QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> future =
startFilteredReduced<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType>
(begin, end,
QtPrivate::createFunctionWrapper(keep),
QtPrivate::createFunctionWrapper(reduce),
options);
return future.result();
}
#endif
// blocking filtered() on sequences
template <typename Sequence, typename KeepFunctor>
Sequence blockingFiltered(const Sequence &sequence, KeepFunctor keep)
{
QFuture<Sequence> future =
startFilteredReduced<Sequence>(sequence, QtPrivate::createFunctionWrapper(keep), QtPrivate::PushBackWrapper(), OrderedReduce);
return future.result();
}
// blocking filtered() on iterators
template <typename OutputSequence, typename Iterator, typename KeepFunctor>
OutputSequence blockingFiltered(Iterator begin, Iterator end, KeepFunctor keep)
{
QFuture<OutputSequence> future = startFilteredReduced<OutputSequence>(begin, end,
QtPrivate::createFunctionWrapper(keep),
QtPrivate::PushBackWrapper(),
OrderedReduce);
return future.result();
}
} // namespace QtConcurrent
QT_END_NAMESPACE
#endif // QT_NO_CONCURRENT
#endif
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