/*
 *  Copyright 2008-2013 NVIDIA Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

#pragma once

#include <thrust/detail/config.h>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header
#include <thrust/iterator/iterator_traits.h>
#include <thrust/sort.h>
#include <thrust/system/detail/generic/select_system.h>

// Include all active backend system implementations (generic, sequential, host and device)
#include <thrust/system/detail/generic/sort.h>
#include <thrust/system/detail/sequential/sort.h>
#include __THRUST_HOST_SYSTEM_ALGORITH_DETAIL_HEADER_INCLUDE(sort.h)
#include __THRUST_DEVICE_SYSTEM_ALGORITH_DETAIL_HEADER_INCLUDE(sort.h)

// Some build systems need a hint to know which files we could include
#if 0
#  include <thrust/system/cpp/detail/sort.h>
#  include <thrust/system/cuda/detail/sort.h>
#  include <thrust/system/omp/detail/sort.h>
#  include <thrust/system/tbb/detail/sort.h>
#endif

THRUST_NAMESPACE_BEGIN

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename RandomAccessIterator>
_CCCL_HOST_DEVICE void sort(const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
                            RandomAccessIterator first,
                            RandomAccessIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort");
  using thrust::system::detail::generic::sort;
  return sort(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last);
} // end sort()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename RandomAccessIterator, typename StrictWeakOrdering>
_CCCL_HOST_DEVICE void
sort(const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
     RandomAccessIterator first,
     RandomAccessIterator last,
     StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort");
  using thrust::system::detail::generic::sort;
  return sort(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last, comp);
} // end sort()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename RandomAccessIterator>
_CCCL_HOST_DEVICE void stable_sort(const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
                                   RandomAccessIterator first,
                                   RandomAccessIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort");
  using thrust::system::detail::generic::stable_sort;
  return stable_sort(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last);
} // end stable_sort()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename RandomAccessIterator, typename StrictWeakOrdering>
_CCCL_HOST_DEVICE void stable_sort(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
  RandomAccessIterator first,
  RandomAccessIterator last,
  StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort");
  using thrust::system::detail::generic::stable_sort;
  return stable_sort(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last, comp);
} // end stable_sort()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename RandomAccessIterator1, typename RandomAccessIterator2>
_CCCL_HOST_DEVICE void sort_by_key(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
  RandomAccessIterator1 keys_first,
  RandomAccessIterator1 keys_last,
  RandomAccessIterator2 values_first)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort_by_key");
  using thrust::system::detail::generic::sort_by_key;
  return sort_by_key(
    thrust::detail::derived_cast(thrust::detail::strip_const(exec)), keys_first, keys_last, values_first);
} // end sort_by_key()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy,
          typename RandomAccessIterator1,
          typename RandomAccessIterator2,
          typename StrictWeakOrdering>
_CCCL_HOST_DEVICE void sort_by_key(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
  RandomAccessIterator1 keys_first,
  RandomAccessIterator1 keys_last,
  RandomAccessIterator2 values_first,
  StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort_by_key");
  using thrust::system::detail::generic::sort_by_key;
  return sort_by_key(
    thrust::detail::derived_cast(thrust::detail::strip_const(exec)), keys_first, keys_last, values_first, comp);
} // end sort_by_key()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename RandomAccessIterator1, typename RandomAccessIterator2>
_CCCL_HOST_DEVICE void stable_sort_by_key(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
  RandomAccessIterator1 keys_first,
  RandomAccessIterator1 keys_last,
  RandomAccessIterator2 values_first)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort_by_key");
  using thrust::system::detail::generic::stable_sort_by_key;
  return stable_sort_by_key(
    thrust::detail::derived_cast(thrust::detail::strip_const(exec)), keys_first, keys_last, values_first);
} // end stable_sort_by_key()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy,
          typename RandomAccessIterator1,
          typename RandomAccessIterator2,
          typename StrictWeakOrdering>
_CCCL_HOST_DEVICE void stable_sort_by_key(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
  RandomAccessIterator1 keys_first,
  RandomAccessIterator1 keys_last,
  RandomAccessIterator2 values_first,
  StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort_by_key");
  using thrust::system::detail::generic::stable_sort_by_key;
  return stable_sort_by_key(
    thrust::detail::derived_cast(thrust::detail::strip_const(exec)), keys_first, keys_last, values_first, comp);
} // end stable_sort_by_key()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename ForwardIterator>
_CCCL_HOST_DEVICE bool
is_sorted(const thrust::detail::execution_policy_base<DerivedPolicy>& exec, ForwardIterator first, ForwardIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted");
  using thrust::system::detail::generic::is_sorted;
  return is_sorted(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last);
} // end is_sorted()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename ForwardIterator, typename Compare>
_CCCL_HOST_DEVICE bool
is_sorted(const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
          ForwardIterator first,
          ForwardIterator last,
          Compare comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted");
  using thrust::system::detail::generic::is_sorted;
  return is_sorted(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last, comp);
} // end is_sorted()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename ForwardIterator>
_CCCL_HOST_DEVICE ForwardIterator is_sorted_until(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec, ForwardIterator first, ForwardIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted_until");
  using thrust::system::detail::generic::is_sorted_until;
  return is_sorted_until(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last);
} // end is_sorted_until()

_CCCL_EXEC_CHECK_DISABLE
template <typename DerivedPolicy, typename ForwardIterator, typename Compare>
_CCCL_HOST_DEVICE ForwardIterator is_sorted_until(
  const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
  ForwardIterator first,
  ForwardIterator last,
  Compare comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted_until");
  using thrust::system::detail::generic::is_sorted_until;
  return is_sorted_until(thrust::detail::derived_cast(thrust::detail::strip_const(exec)), first, last, comp);
} // end is_sorted_until()

///////////////
// Key Sorts //
///////////////

template <typename RandomAccessIterator>
void sort(RandomAccessIterator first, RandomAccessIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<RandomAccessIterator>::type;

  System system;

  return thrust::sort(select_system(system), first, last);
} // end sort()

template <typename RandomAccessIterator, typename StrictWeakOrdering>
_CCCL_HOST_DEVICE void sort(RandomAccessIterator first, RandomAccessIterator last, StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<RandomAccessIterator>::type;

  System system;

  return thrust::sort(select_system(system), first, last, comp);
} // end sort()

template <typename RandomAccessIterator>
void stable_sort(RandomAccessIterator first, RandomAccessIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<RandomAccessIterator>::type;

  System system;

  return thrust::stable_sort(select_system(system), first, last);
} // end stable_sort()

template <typename RandomAccessIterator, typename StrictWeakOrdering>
void stable_sort(RandomAccessIterator first, RandomAccessIterator last, StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<RandomAccessIterator>::type;

  System system;

  return thrust::stable_sort(select_system(system), first, last, comp);
} // end stable_sort()

/////////////////////
// Key-Value Sorts //
/////////////////////

template <typename RandomAccessIterator1, typename RandomAccessIterator2>
void sort_by_key(RandomAccessIterator1 keys_first, RandomAccessIterator1 keys_last, RandomAccessIterator2 values_first)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort_by_key");
  using thrust::system::detail::generic::select_system;

  using System1 = typename thrust::iterator_system<RandomAccessIterator1>::type;
  using System2 = typename thrust::iterator_system<RandomAccessIterator2>::type;

  System1 system1;
  System2 system2;

  return thrust::sort_by_key(select_system(system1, system2), keys_first, keys_last, values_first);
} // end sort_by_key()

template <typename RandomAccessIterator1, typename RandomAccessIterator2, typename StrictWeakOrdering>
void sort_by_key(RandomAccessIterator1 keys_first,
                 RandomAccessIterator1 keys_last,
                 RandomAccessIterator2 values_first,
                 StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::sort_by_key");
  using thrust::system::detail::generic::select_system;

  using System1 = typename thrust::iterator_system<RandomAccessIterator1>::type;
  using System2 = typename thrust::iterator_system<RandomAccessIterator2>::type;

  System1 system1;
  System2 system2;

  return thrust::sort_by_key(select_system(system1, system2), keys_first, keys_last, values_first, comp);
} // end sort_by_key()

template <typename RandomAccessIterator1, typename RandomAccessIterator2>
void stable_sort_by_key(
  RandomAccessIterator1 keys_first, RandomAccessIterator1 keys_last, RandomAccessIterator2 values_first)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort_by_key");
  using thrust::system::detail::generic::select_system;

  using System1 = typename thrust::iterator_system<RandomAccessIterator1>::type;
  using System2 = typename thrust::iterator_system<RandomAccessIterator2>::type;

  System1 system1;
  System2 system2;

  return thrust::stable_sort_by_key(select_system(system1, system2), keys_first, keys_last, values_first);
} // end stable_sort_by_key()

template <typename RandomAccessIterator1, typename RandomAccessIterator2, typename StrictWeakOrdering>
void stable_sort_by_key(RandomAccessIterator1 keys_first,
                        RandomAccessIterator1 keys_last,
                        RandomAccessIterator2 values_first,
                        StrictWeakOrdering comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::stable_sort_by_key");
  using thrust::system::detail::generic::select_system;

  using System1 = typename thrust::iterator_system<RandomAccessIterator1>::type;
  using System2 = typename thrust::iterator_system<RandomAccessIterator2>::type;

  System1 system1;
  System2 system2;

  return thrust::stable_sort_by_key(select_system(system1, system2), keys_first, keys_last, values_first, comp);
} // end stable_sort_by_key()

template <typename ForwardIterator>
bool is_sorted(ForwardIterator first, ForwardIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<ForwardIterator>::type;

  System system;

  return thrust::is_sorted(select_system(system), first, last);
} // end is_sorted()

template <typename ForwardIterator, typename Compare>
bool is_sorted(ForwardIterator first, ForwardIterator last, Compare comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<ForwardIterator>::type;

  System system;

  return thrust::is_sorted(select_system(system), first, last, comp);
} // end is_sorted()

template <typename ForwardIterator>
ForwardIterator is_sorted_until(ForwardIterator first, ForwardIterator last)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted_until");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<ForwardIterator>::type;

  System system;

  return thrust::is_sorted_until(select_system(system), first, last);
} // end is_sorted_until()

template <typename ForwardIterator, typename Compare>
ForwardIterator is_sorted_until(ForwardIterator first, ForwardIterator last, Compare comp)
{
  _CCCL_NVTX_RANGE_SCOPE("thrust::is_sorted_until");
  using thrust::system::detail::generic::select_system;

  using System = typename thrust::iterator_system<ForwardIterator>::type;

  System system;

  return thrust::is_sorted_until(select_system(system), first, last, comp);
} // end is_sorted_until()

THRUST_NAMESPACE_END
