/*
 *  Copyright 2008-2018 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/detail/execute_with_dependencies.h>
#include <thrust/detail/type_traits.h>

THRUST_NAMESPACE_BEGIN

namespace detail
{

template <typename Allocator, template <typename> class BaseSystem>
struct execute_with_allocator : BaseSystem<execute_with_allocator<Allocator, BaseSystem>>
{
private:
  typedef BaseSystem<execute_with_allocator<Allocator, BaseSystem>> super_t;

  Allocator alloc;

public:
  _CCCL_HOST_DEVICE execute_with_allocator(super_t const& super, Allocator alloc_)
      : super_t(super)
      , alloc(alloc_)
  {}

  _CCCL_EXEC_CHECK_DISABLE
  _CCCL_HOST_DEVICE execute_with_allocator(Allocator alloc_)
      : alloc(alloc_)
  {}

  ::cuda::std::__libcpp_remove_reference_t<Allocator>& get_allocator()
  {
    return alloc;
  }

  template <typename... Dependencies>
  _CCCL_HOST execute_with_allocator_and_dependencies<Allocator, BaseSystem, Dependencies...>
  after(Dependencies&&... dependencies) const
  {
    return {alloc, capture_as_dependency(THRUST_FWD(dependencies))...};
  }

  template <typename... Dependencies>
  _CCCL_HOST execute_with_allocator_and_dependencies<Allocator, BaseSystem, Dependencies...>
  after(std::tuple<Dependencies...>& dependencies) const
  {
    return {alloc, capture_as_dependency(dependencies)};
  }
  template <typename... Dependencies>
  _CCCL_HOST execute_with_allocator_and_dependencies<Allocator, BaseSystem, Dependencies...>
  after(std::tuple<Dependencies...>&& dependencies) const
  {
    return {alloc, capture_as_dependency(std::move(dependencies))};
  }

  template <typename... Dependencies>
  _CCCL_HOST execute_with_allocator_and_dependencies<Allocator, BaseSystem, Dependencies...>
  rebind_after(Dependencies&&... dependencies) const
  {
    return {alloc, capture_as_dependency(THRUST_FWD(dependencies))...};
  }

  template <typename... Dependencies>
  _CCCL_HOST execute_with_allocator_and_dependencies<Allocator, BaseSystem, Dependencies...>
  rebind_after(std::tuple<Dependencies...>& dependencies) const
  {
    return {alloc, capture_as_dependency(dependencies)};
  }
  template <typename... Dependencies>
  _CCCL_HOST execute_with_allocator_and_dependencies<Allocator, BaseSystem, Dependencies...>
  rebind_after(std::tuple<Dependencies...>&& dependencies) const
  {
    return {alloc, capture_as_dependency(std::move(dependencies))};
  }
};

} // namespace detail

THRUST_NAMESPACE_END
