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Factorize const and non-const version of the generic operator() method.

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Gael Guennebaud
2017-01-10 21:45:55 +01:00
parent d072fc4b14
commit 17eac60446
3 changed files with 84 additions and 106 deletions
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81
Eigen/src/plugins/IndexedViewMethods.h Normal file
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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2017 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This file is automatically included twice to generate const and non-const versions
#ifndef EIGEN_INDEXED_VIEW_METHOD_2ND_PASS
#define EIGEN_INDEXED_VIEW_METHOD_CONST const
#define EIGEN_INDEXED_VIEW_METHOD_TYPE ConstIndexedViewType
#else
#define EIGEN_INDEXED_VIEW_METHOD_CONST
#define EIGEN_INDEXED_VIEW_METHOD_TYPE IndexedViewType
#endif
template<typename RowIndices, typename ColIndices>
struct EIGEN_INDEXED_VIEW_METHOD_TYPE {
typedef IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,typename internal::MakeIndexing<RowIndices>::type,typename internal::MakeIndexing<ColIndices>::type> type;
};
template<typename RowIndices, typename ColIndices>
typename internal::enable_if<
! (internal::traits<typename EIGEN_INDEXED_VIEW_METHOD_TYPE<RowIndices,ColIndices>::type>::IsBlockAlike
|| (internal::is_integral<RowIndices>::value && internal::is_integral<ColIndices>::value)),
typename EIGEN_INDEXED_VIEW_METHOD_TYPE<RowIndices,ColIndices>::type >::type
operator()(const RowIndices& rowIndices, const ColIndices& colIndices) EIGEN_INDEXED_VIEW_METHOD_CONST {
return typename EIGEN_INDEXED_VIEW_METHOD_TYPE<RowIndices,ColIndices>::type(
derived(), internal::make_indexing(rowIndices,derived().rows()), internal::make_indexing(colIndices,derived().cols()));
}
template<typename RowIndices, typename ColIndices>
typename internal::enable_if<
internal::traits<typename EIGEN_INDEXED_VIEW_METHOD_TYPE<RowIndices,ColIndices>::type>::IsBlockAlike
&& !(internal::is_integral<RowIndices>::value && internal::is_integral<ColIndices>::value),
typename internal::traits<typename EIGEN_INDEXED_VIEW_METHOD_TYPE<RowIndices,ColIndices>::type>::BlockType>::type
operator()(const RowIndices& rowIndices, const ColIndices& colIndices) EIGEN_INDEXED_VIEW_METHOD_CONST {
typedef typename internal::traits<typename EIGEN_INDEXED_VIEW_METHOD_TYPE<RowIndices,ColIndices>::type>::BlockType BlockType;
typename internal::MakeIndexing<RowIndices>::type actualRowIndices = internal::make_indexing(rowIndices,derived().rows());
typename internal::MakeIndexing<ColIndices>::type actualColIndices = internal::make_indexing(colIndices,derived().cols());
return BlockType(derived(),
internal::first(actualRowIndices),
internal::first(actualColIndices),
internal::size(actualRowIndices),
internal::size(actualColIndices));
}
template<typename RowIndicesT, std::size_t RowIndicesN, typename ColIndices>
IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,const RowIndicesT (&)[RowIndicesN],typename internal::MakeIndexing<ColIndices>::type>
operator()(const RowIndicesT (&rowIndices)[RowIndicesN], const ColIndices& colIndices) EIGEN_INDEXED_VIEW_METHOD_CONST {
return IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,const RowIndicesT (&)[RowIndicesN],typename internal::MakeIndexing<ColIndices>::type>(
derived(), rowIndices, internal::make_indexing(colIndices,derived().cols()));
}
template<typename RowIndices, typename ColIndicesT, std::size_t ColIndicesN>
IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,typename internal::MakeIndexing<RowIndices>::type, const ColIndicesT (&)[ColIndicesN]>
operator()(const RowIndices& rowIndices, const ColIndicesT (&colIndices)[ColIndicesN]) EIGEN_INDEXED_VIEW_METHOD_CONST {
return IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,typename internal::MakeIndexing<RowIndices>::type,const ColIndicesT (&)[ColIndicesN]>(
derived(), internal::make_indexing(rowIndices,derived().rows()), colIndices);
}
template<typename RowIndicesT, std::size_t RowIndicesN, typename ColIndicesT, std::size_t ColIndicesN>
IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,const RowIndicesT (&)[RowIndicesN], const ColIndicesT (&)[ColIndicesN]>
operator()(const RowIndicesT (&rowIndices)[RowIndicesN], const ColIndicesT (&colIndices)[ColIndicesN]) EIGEN_INDEXED_VIEW_METHOD_CONST {
return IndexedView<EIGEN_INDEXED_VIEW_METHOD_CONST Derived,const RowIndicesT (&)[RowIndicesN],const ColIndicesT (&)[ColIndicesN]>(
derived(), rowIndices, colIndices);
}
#undef EIGEN_INDEXED_VIEW_METHOD_CONST
#undef EIGEN_INDEXED_VIEW_METHOD_TYPE
#ifndef EIGEN_INDEXED_VIEW_METHOD_2ND_PASS
#define EIGEN_INDEXED_VIEW_METHOD_2ND_PASS
#include "IndexedViewMethods.h"
#undef EIGEN_INDEXED_VIEW_METHOD_2ND_PASS
#endif