File size: 3,251 Bytes
501e3f2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | // -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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___FUNCTIONAL_BIND_FRONT_H
#define _LIBCUDACXX___FUNCTIONAL_BIND_FRONT_H
#ifndef __cuda_std__
#include <__config>
#endif // __cuda_std__
#include "../__concepts/__concept_macros.h"
#include "../__functional/invoke.h"
#include "../__functional/perfect_forward.h"
#include "../__type_traits/decay.h"
#include "../__type_traits/enable_if.h"
#include "../__type_traits/is_constructible.h"
#include "../__type_traits/is_move_constructible.h"
#include "../__type_traits/is_nothrow_constructible.h"
#include "../__utility/forward.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
_LIBCUDACXX_BEGIN_NAMESPACE_STD
#if _LIBCUDACXX_STD_VER > 14
struct __bind_front_op {
template <class ..._Args>
_LIBCUDACXX_HIDE_FROM_ABI _LIBCUDACXX_INLINE_VISIBILITY
constexpr auto operator()(_Args&& ...__args) const
noexcept(noexcept(_CUDA_VSTD::invoke(_CUDA_VSTD::forward<_Args>(__args)...)))
-> decltype( _CUDA_VSTD::invoke(_CUDA_VSTD::forward<_Args>(__args)...))
{ return _CUDA_VSTD::invoke(_CUDA_VSTD::forward<_Args>(__args)...); }
};
template <class _Fn, class ..._BoundArgs>
struct __bind_front_t : __perfect_forward<__bind_front_op, _Fn, _BoundArgs...> {
using __base = __perfect_forward<__bind_front_op, _Fn, _BoundArgs...>;
#if defined(_LIBCUDACXX_COMPILER_NVRTC)
constexpr __bind_front_t() noexcept = default;
template<class... _Args>
_LIBCUDACXX_INLINE_VISIBILITY constexpr
__bind_front_t(_Args&&... __args) noexcept(noexcept(__base(_CUDA_VSTD::declval<_Args>()...)))
: __base(_CUDA_VSTD::forward<_Args>(__args)...)
{}
#else
using __base::__base;
#endif
};
template<class _Fn, class... _Args>
_LIBCUDACXX_CONCEPT __can_bind_front = is_constructible_v<decay_t<_Fn>, _Fn> &&
is_move_constructible_v<decay_t<_Fn>> &&
(is_constructible_v<decay_t<_Args>, _Args> && ...) &&
(is_move_constructible_v<decay_t<_Args>> && ... );
_LIBCUDACXX_TEMPLATE(class _Fn, class... _Args)
_LIBCUDACXX_REQUIRES( __can_bind_front<_Fn, _Args...>)
_LIBCUDACXX_HIDE_FROM_ABI _LIBCUDACXX_INLINE_VISIBILITY
constexpr auto bind_front(_Fn&& __f, _Args&&... __args) noexcept(is_nothrow_constructible_v<tuple<decay_t<_Args>...>, _Args&&...>) {
return __bind_front_t<decay_t<_Fn>, decay_t<_Args>...>(_CUDA_VSTD::forward<_Fn>(__f), _CUDA_VSTD::forward<_Args>(__args)...);
}
#endif // _LIBCUDACXX_STD_VER > 14
_LIBCUDACXX_END_NAMESPACE_STD
#endif // _LIBCUDACXX___FUNCTIONAL_BIND_FRONT_H
|