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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCUDACXX___CONCEPTS_CONSTRUCTIBLE_H
#define _LIBCUDACXX___CONCEPTS_CONSTRUCTIBLE_H
#include <cuda/std/detail/__config>
#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 <cuda/std/__concepts/concept_macros.h>
#include <cuda/std/__concepts/convertible_to.h>
#include <cuda/std/__concepts/destructible.h>
#include <cuda/std/__type_traits/add_lvalue_reference.h>
#include <cuda/std/__type_traits/is_constructible.h>
#include <cuda/std/__cccl/prologue.h>
_LIBCUDACXX_BEGIN_NAMESPACE_STD
#if _CCCL_HAS_CONCEPTS()
// [concept.constructible]
template <class _Tp, class... _Args>
concept constructible_from = destructible<_Tp> && is_constructible_v<_Tp, _Args...>;
// [concept.default.init]
template <class _Tp>
concept __default_initializable = requires { ::new _Tp; };
template <class _Tp>
concept default_initializable = constructible_from<_Tp> && requires { _Tp{}; } && __default_initializable<_Tp>;
// [concept.moveconstructible]
template <class _Tp>
concept move_constructible = constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>;
// [concept.copyconstructible]
template <class _Tp>
concept copy_constructible =
move_constructible<_Tp> && constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp>
&& constructible_from<_Tp, const _Tp&> && convertible_to<const _Tp&, _Tp> && constructible_from<_Tp, const _Tp>
&& convertible_to<const _Tp, _Tp>;
#else // ^^^ _CCCL_HAS_CONCEPTS() ^^^ / vvv !_CCCL_HAS_CONCEPTS() vvv
template <class _Tp, class... _Args>
_CCCL_CONCEPT_FRAGMENT(__constructible_from_,
requires()(requires(destructible<_Tp>), requires(_CCCL_TRAIT(is_constructible, _Tp, _Args...))));
template <class _Tp, class... _Args>
_CCCL_CONCEPT constructible_from = _CCCL_FRAGMENT(__constructible_from_, _Tp, _Args...);
template <class _Tp>
_CCCL_CONCEPT_FRAGMENT(__default_initializable_, requires()((::new _Tp)));
template <class _Tp>
_CCCL_CONCEPT __default_initializable = _CCCL_FRAGMENT(__default_initializable_, _Tp);
template <class _Tp>
_CCCL_CONCEPT_FRAGMENT(_Default_initializable_,
requires(_Tp = _Tp{})(requires(constructible_from<_Tp>), requires(__default_initializable<_Tp>)));
template <class _Tp>
_CCCL_CONCEPT default_initializable = _CCCL_FRAGMENT(_Default_initializable_, _Tp);
// [concept.moveconstructible]
template <class _Tp>
_CCCL_CONCEPT_FRAGMENT(__move_constructible_,
requires()(requires(constructible_from<_Tp, _Tp>), requires(convertible_to<_Tp, _Tp>)));
template <class _Tp>
_CCCL_CONCEPT move_constructible = _CCCL_FRAGMENT(__move_constructible_, _Tp);
// [concept.copyconstructible]
template <class _Tp>
_CCCL_CONCEPT_FRAGMENT(
__copy_constructible_,
requires()(
requires(move_constructible<_Tp>),
requires(constructible_from<_Tp, add_lvalue_reference_t<_Tp>>&& convertible_to<add_lvalue_reference_t<_Tp>, _Tp>),
requires(constructible_from<_Tp, const add_lvalue_reference_t<_Tp>>&&
convertible_to<const add_lvalue_reference_t<_Tp>, _Tp>),
requires(constructible_from<_Tp, const _Tp>&& convertible_to<const _Tp, _Tp>)));
template <class _Tp>
_CCCL_CONCEPT copy_constructible = _CCCL_FRAGMENT(__copy_constructible_, _Tp);
#endif // ^^^ !_CCCL_HAS_CONCEPTS() ^^^
_LIBCUDACXX_END_NAMESPACE_STD
#include <cuda/std/__cccl/epilogue.h>
#endif // _LIBCUDACXX___CONCEPTS_CONSTRUCTIBLE_H
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