// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project

#ifndef KOKKOS_STD_ALGORITHMS_MOVE_BACKWARD_HPP
#define KOKKOS_STD_ALGORITHMS_MOVE_BACKWARD_HPP

#include "impl/Kokkos_MoveBackward.hpp"
#include <Kokkos_Iterator.hpp>

namespace Kokkos {
namespace Experimental {

//
// overload set accepting execution space
//
template <
    typename ExecutionSpace, typename IteratorType1, typename IteratorType2,
    std::enable_if_t<::Kokkos::is_execution_space_v<ExecutionSpace>, int> = 0>
IteratorType2 move_backward(const ExecutionSpace& ex, IteratorType1 first,
                            IteratorType1 last, IteratorType2 d_last) {
  return Impl::move_backward_exespace_impl(
      "Kokkos::move_backward_iterator_api_default", ex, first, last, d_last);
}

template <
    typename ExecutionSpace, typename DataType1, typename... Properties1,
    typename DataType2, typename... Properties2,
    std::enable_if_t<::Kokkos::is_execution_space_v<ExecutionSpace>, int> = 0>
auto move_backward(const ExecutionSpace& ex,
                   const ::Kokkos::View<DataType1, Properties1...>& source,
                   const ::Kokkos::View<DataType2, Properties2...>& dest) {
  Impl::static_assert_is_admissible_to_kokkos_std_algorithms(source);
  Impl::static_assert_is_admissible_to_kokkos_std_algorithms(dest);

  return Impl::move_backward_exespace_impl(
      "Kokkos::move_backward_view_api_default", ex, begin(source), end(source),
      end(dest));
}

template <
    typename ExecutionSpace, typename IteratorType1, typename IteratorType2,
    std::enable_if_t<::Kokkos::is_execution_space_v<ExecutionSpace>, int> = 0>
IteratorType2 move_backward(const std::string& label, const ExecutionSpace& ex,
                            IteratorType1 first, IteratorType1 last,
                            IteratorType2 d_last) {
  return Impl::move_backward_exespace_impl(label, ex, first, last, d_last);
}

template <
    typename ExecutionSpace, typename DataType1, typename... Properties1,
    typename DataType2, typename... Properties2,
    std::enable_if_t<::Kokkos::is_execution_space_v<ExecutionSpace>, int> = 0>
auto move_backward(const std::string& label, const ExecutionSpace& ex,
                   const ::Kokkos::View<DataType1, Properties1...>& source,
                   const ::Kokkos::View<DataType2, Properties2...>& dest) {
  Impl::static_assert_is_admissible_to_kokkos_std_algorithms(source);
  Impl::static_assert_is_admissible_to_kokkos_std_algorithms(dest);

  return Impl::move_backward_exespace_impl(label, ex, begin(source),
                                           end(source), end(dest));
}

//
// overload set accepting a team handle
// Note: for now omit the overloads accepting a label
// since they cause issues on device because of the string allocation.
//
template <typename TeamHandleType, typename IteratorType1,
          typename IteratorType2,
          std::enable_if_t<::Kokkos::is_team_handle_v<TeamHandleType>, int> = 0>
KOKKOS_FUNCTION IteratorType2 move_backward(const TeamHandleType& teamHandle,
                                            IteratorType1 first,
                                            IteratorType1 last,
                                            IteratorType2 d_last) {
  return Impl::move_backward_team_impl(teamHandle, first, last, d_last);
}

template <typename TeamHandleType, typename DataType1, typename... Properties1,
          typename DataType2, typename... Properties2,
          std::enable_if_t<::Kokkos::is_team_handle_v<TeamHandleType>, int> = 0>
KOKKOS_FUNCTION auto move_backward(
    const TeamHandleType& teamHandle,
    const ::Kokkos::View<DataType1, Properties1...>& source,
    const ::Kokkos::View<DataType2, Properties2...>& dest) {
  Impl::static_assert_is_admissible_to_kokkos_std_algorithms(source);
  Impl::static_assert_is_admissible_to_kokkos_std_algorithms(dest);

  return Impl::move_backward_team_impl(teamHandle, begin(source), end(source),
                                       end(dest));
}

}  // namespace Experimental
}  // namespace Kokkos

#endif
