reordering_base.hpp

// SPDX-FileCopyrightText: 2017 - 2026 The Ginkgo authors
//
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef GKO_PUBLIC_CORE_REORDER_REORDERING_BASE_HPP_
#define GKO_PUBLIC_CORE_REORDER_REORDERING_BASE_HPP_
 
 
#include <memory>
 
#include <ginkgo/core/base/abstract_factory.hpp>
#include <ginkgo/core/base/array.hpp>
#include <ginkgo/core/base/executor.hpp>
#include <ginkgo/core/base/lin_op.hpp>
#include <ginkgo/core/base/polymorphic_object.hpp>
#include <ginkgo/core/base/utils.hpp>
 
 
namespace gko {
namespace reorder {
 
 
template <typename IndexType = int32>
class ReorderingBase : public PolymorphicObject {
public:
    using index_type = IndexType;
 
    const array<index_type>& get_permutation_array() const
    {
        return permutation_array_;
    }
 
protected:
    explicit ReorderingBase(std::shared_ptr<const gko::Executor> exec)
        : PolymorphicObject(exec), permutation_array_{exec}
    {}
 
    void set_permutation_array(array<index_type>& permutation_array)
    {
        permutation_array_ = permutation_array;
    }
 
private:
    array<index_type> permutation_array_;
};
 
 
struct ReorderingBaseArgs {
    std::shared_ptr<LinOp> system_matrix;
 
    ReorderingBaseArgs(std::shared_ptr<LinOp> system_matrix)
        : system_matrix{system_matrix}
    {}
};
 
 
template <typename IndexType = int32>
using ReorderingBaseFactory =
    AbstractFactory<ReorderingBase<IndexType>, ReorderingBaseArgs>;
 
 
template <typename ConcreteFactory, typename ConcreteReorderingBase,
          typename ParametersType, typename IndexType = int32,
          typename PolymorphicBase = ReorderingBaseFactory<IndexType>>
using EnableDefaultReorderingBaseFactory =
    EnableDefaultFactory<ConcreteFactory, ConcreteReorderingBase,
                         ParametersType, PolymorphicBase>;
 
 
#define GKO_ENABLE_REORDERING_BASE_FACTORY(_reordering_base, _parameters_name, \
                                           _factory_name)                      \
public:                                                                        \
    const _parameters_name##_type& get_##_parameters_name() const              \
    {                                                                          \
        return _parameters_name##_;                                            \
    }                                                                          \
                                                                               \
    class _factory_name                                                        \
        : public ::gko::reorder::EnableDefaultReorderingBaseFactory<           \
              _factory_name, _reordering_base, _parameters_name##_type,        \
              IndexType> {                                                     \
        friend class ::gko::enable_parameters_type<_parameters_name##_type,    \
                                                   _factory_name>;             \
        explicit _factory_name(std::shared_ptr<const ::gko::Executor> exec)    \
            : ::gko::reorder::EnableDefaultReorderingBaseFactory<              \
                  _factory_name, _reordering_base, _parameters_name##_type,    \
                  IndexType>(std::move(exec))                                  \
        {}                                                                     \
        explicit _factory_name(std::shared_ptr<const ::gko::Executor> exec,    \
                               const _parameters_name##_type& parameters)      \
            : ::gko::reorder::EnableDefaultReorderingBaseFactory<              \
                  _factory_name, _reordering_base, _parameters_name##_type,    \
                  IndexType>(std::move(exec), parameters)                      \
        {}                                                                     \
    };                                                                         \
    friend ::gko::reorder::EnableDefaultReorderingBaseFactory<                 \
        _factory_name, _reordering_base, _parameters_name##_type, IndexType>;  \
                                                                               \
private:                                                                       \
    _parameters_name##_type _parameters_name##_;                               \
                                                                               \
public:                                                                        \
    static_assert(true,                                                        \
                  "This assert is used to counter the false positive extra "   \
                  "semi-colon warnings")
 
 
}  // namespace reorder
}  // namespace gko
 
 
#endif  // GKO_PUBLIC_CORE_REORDER_REORDERING_BASE_HPP_