derek.holloway
7502bf64a4
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104 lines
3.9 KiB
C++
104 lines
3.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCUDACXX___CONCEPTS_CONSTRUCTIBLE_H
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#define _LIBCUDACXX___CONCEPTS_CONSTRUCTIBLE_H
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#include <cuda/std/detail/__config>
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#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
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# pragma GCC system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
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# pragma clang system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
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# pragma system_header
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#endif // no system header
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#include <cuda/std/__concepts/concept_macros.h>
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#include <cuda/std/__concepts/convertible_to.h>
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#include <cuda/std/__concepts/destructible.h>
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#include <cuda/std/__type_traits/add_lvalue_reference.h>
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#include <cuda/std/__type_traits/is_constructible.h>
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_LIBCUDACXX_BEGIN_NAMESPACE_STD
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#if !defined(_CCCL_NO_CONCEPTS)
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// [concept.constructible]
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template <class _Tp, class... _Args>
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concept constructible_from = destructible<_Tp> && is_constructible_v<_Tp, _Args...>;
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// [concept.default.init]
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template <class _Tp>
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concept __default_initializable = requires { ::new _Tp; };
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template <class _Tp>
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concept default_initializable = constructible_from<_Tp> && requires { _Tp{}; } && __default_initializable<_Tp>;
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// [concept.moveconstructible]
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template <class _Tp>
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concept move_constructible = constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>;
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// [concept.copyconstructible]
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template <class _Tp>
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concept copy_constructible =
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move_constructible<_Tp> && constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp>
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&& constructible_from<_Tp, const _Tp&> && convertible_to<const _Tp&, _Tp> && constructible_from<_Tp, const _Tp>
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&& convertible_to<const _Tp, _Tp>;
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#elif !defined(_CCCL_NO_VARIABLE_TEMPLATES) // ^^^ !_CCCL_NO_CONCEPTS ^^^
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template <class _Tp, class... _Args>
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_CCCL_CONCEPT_FRAGMENT(__constructible_from_,
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requires()(requires(destructible<_Tp>), requires(_CCCL_TRAIT(is_constructible, _Tp, _Args...))));
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template <class _Tp, class... _Args>
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_CCCL_CONCEPT constructible_from = _CCCL_FRAGMENT(__constructible_from_, _Tp, _Args...);
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template <class _Tp>
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_CCCL_CONCEPT_FRAGMENT(__default_initializable_, requires()((::new _Tp)));
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template <class _Tp>
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_CCCL_CONCEPT __default_initializable = _CCCL_FRAGMENT(__default_initializable_, _Tp);
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template <class _Tp>
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_CCCL_CONCEPT_FRAGMENT(_Default_initializable_,
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requires(_Tp = _Tp{})(requires(constructible_from<_Tp>), requires(__default_initializable<_Tp>)));
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template <class _Tp>
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_CCCL_CONCEPT default_initializable = _CCCL_FRAGMENT(_Default_initializable_, _Tp);
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// [concept.moveconstructible]
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template <class _Tp>
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_CCCL_CONCEPT_FRAGMENT(__move_constructible_,
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requires()(requires(constructible_from<_Tp, _Tp>), requires(convertible_to<_Tp, _Tp>)));
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template <class _Tp>
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_CCCL_CONCEPT move_constructible = _CCCL_FRAGMENT(__move_constructible_, _Tp);
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// [concept.copyconstructible]
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template <class _Tp>
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_CCCL_CONCEPT_FRAGMENT(
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__copy_constructible_,
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requires()(
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requires(move_constructible<_Tp>),
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requires(constructible_from<_Tp, add_lvalue_reference_t<_Tp>>&& convertible_to<add_lvalue_reference_t<_Tp>, _Tp>),
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requires(constructible_from<_Tp, const add_lvalue_reference_t<_Tp>>&&
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convertible_to<const add_lvalue_reference_t<_Tp>, _Tp>),
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requires(constructible_from<_Tp, const _Tp>&& convertible_to<const _Tp, _Tp>)));
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template <class _Tp>
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_CCCL_CONCEPT copy_constructible = _CCCL_FRAGMENT(__copy_constructible_, _Tp);
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#endif // ^^^ !_CCCL_NO_VARIABLE_TEMPLATES
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_LIBCUDACXX_END_NAMESPACE_STD
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#endif // _LIBCUDACXX___CONCEPTS_CONSTRUCTIBLE_H
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