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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___TUPLE_STRUCTURED_BINDINGS_H
#define _LIBCUDACXX___TUPLE_STRUCTURED_BINDINGS_H
#ifdef __cuda_std__
# if defined(_LIBCUDACXX_COMPILER_CLANG)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wmismatched-tags"
# endif // _LIBCUDACXX_COMPILER_CLANG
# if !defined(__CUDACC_RTC__)
// Fetch utility to get primary template for ::std::tuple_size necessary for the specialization of
// ::std::tuple_size<cuda::std::tuple> to enable structured bindings.
// See https://github.com/NVIDIA/libcudacxx/issues/316
# include <utility>
# endif
# include "../__fwd/array.h"
# include "../__fwd/pair.h"
# include "../__fwd/tuple.h"
# include "../__tuple_dir/tuple_element.h"
# include "../__tuple_dir/tuple_size.h"
# include "../__type_traits/integral_constant.h"
// This is a workaround for the fact that structured bindings require that the specializations of
// `tuple_size` and `tuple_element` reside in namespace std (https://eel.is/c++draft/dcl.struct.bind#4).
// See https://github.com/NVIDIA/libcudacxx/issues/316 for a short discussion
# if _LIBCUDACXX_STD_VER > 14
namespace std {
# if defined(__CUDACC_RTC__)
template <class... _Tp>
struct tuple_size;
template <size_t _Ip, class... _Tp>
struct tuple_element;
# endif
template <class _Tp, size_t _Size>
struct tuple_size<_CUDA_VSTD::array<_Tp, _Size>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::array<_Tp, _Size>>
{};
template <class _Tp, size_t _Size>
struct tuple_size<const _CUDA_VSTD::array<_Tp, _Size>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::array<_Tp, _Size>>
{};
template <class _Tp, size_t _Size>
struct tuple_size<volatile _CUDA_VSTD::array<_Tp, _Size>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::array<_Tp, _Size>>
{};
template <class _Tp, size_t _Size>
struct tuple_size<const volatile _CUDA_VSTD::array<_Tp, _Size>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::array<_Tp, _Size>>
{};
template <size_t _Ip, class _Tp, size_t _Size>
struct tuple_element<_Ip, _CUDA_VSTD::array<_Tp, _Size>> : _CUDA_VSTD::tuple_element<_Ip, _CUDA_VSTD::array<_Tp, _Size>>
{};
template <size_t _Ip, class _Tp, size_t _Size>
struct tuple_element<_Ip, const _CUDA_VSTD::array<_Tp, _Size>>
: _CUDA_VSTD::tuple_element<_Ip, const _CUDA_VSTD::array<_Tp, _Size>>
{};
template <size_t _Ip, class _Tp, size_t _Size>
struct tuple_element<_Ip, volatile _CUDA_VSTD::array<_Tp, _Size>>
: _CUDA_VSTD::tuple_element<_Ip, volatile _CUDA_VSTD::array<_Tp, _Size>>
{};
template <size_t _Ip, class _Tp, size_t _Size>
struct tuple_element<_Ip, const volatile _CUDA_VSTD::array<_Tp, _Size>>
: _CUDA_VSTD::tuple_element<_Ip, const volatile _CUDA_VSTD::array<_Tp, _Size>>
{};
template <class _Tp, class _Up>
struct tuple_size<_CUDA_VSTD::pair<_Tp, _Up>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::pair<_Tp, _Up>>
{};
template <class _Tp, class _Up>
struct tuple_size<const _CUDA_VSTD::pair<_Tp, _Up>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::pair<_Tp, _Up>>
{};
template <class _Tp, class _Up>
struct tuple_size<volatile _CUDA_VSTD::pair<_Tp, _Up>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::pair<_Tp, _Up>>
{};
template <class _Tp, class _Up>
struct tuple_size<const volatile _CUDA_VSTD::pair<_Tp, _Up>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::pair<_Tp, _Up>>
{};
template <size_t _Ip, class _Tp, class _Up>
struct tuple_element<_Ip, _CUDA_VSTD::pair<_Tp, _Up>> : _CUDA_VSTD::tuple_element<_Ip, _CUDA_VSTD::pair<_Tp, _Up>>
{};
template <size_t _Ip, class _Tp, class _Up>
struct tuple_element<_Ip, const _CUDA_VSTD::pair<_Tp, _Up>>
: _CUDA_VSTD::tuple_element<_Ip, const _CUDA_VSTD::pair<_Tp, _Up>>
{};
template <size_t _Ip, class _Tp, class _Up>
struct tuple_element<_Ip, volatile _CUDA_VSTD::pair<_Tp, _Up>>
: _CUDA_VSTD::tuple_element<_Ip, volatile _CUDA_VSTD::pair<_Tp, _Up>>
{};
template <size_t _Ip, class _Tp, class _Up>
struct tuple_element<_Ip, const volatile _CUDA_VSTD::pair<_Tp, _Up>>
: _CUDA_VSTD::tuple_element<_Ip, const volatile _CUDA_VSTD::pair<_Tp, _Up>>
{};
template <class... _Tp>
struct tuple_size<_CUDA_VSTD::tuple<_Tp...>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::tuple<_Tp...>>
{};
template <class... _Tp>
struct tuple_size<const _CUDA_VSTD::tuple<_Tp...>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::tuple<_Tp...>>
{};
template <class... _Tp>
struct tuple_size<volatile _CUDA_VSTD::tuple<_Tp...>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::tuple<_Tp...>>
{};
template <class... _Tp>
struct tuple_size<const volatile _CUDA_VSTD::tuple<_Tp...>> : _CUDA_VSTD::tuple_size<_CUDA_VSTD::tuple<_Tp...>>
{};
template <size_t _Ip, class... _Tp>
struct tuple_element<_Ip, _CUDA_VSTD::tuple<_Tp...>> : _CUDA_VSTD::tuple_element<_Ip, _CUDA_VSTD::tuple<_Tp...>>
{};
template <size_t _Ip, class... _Tp>
struct tuple_element<_Ip, const _CUDA_VSTD::tuple<_Tp...>>
: _CUDA_VSTD::tuple_element<_Ip, const _CUDA_VSTD::tuple<_Tp...>>
{};
template <size_t _Ip, class... _Tp>
struct tuple_element<_Ip, volatile _CUDA_VSTD::tuple<_Tp...>>
: _CUDA_VSTD::tuple_element<_Ip, volatile _CUDA_VSTD::tuple<_Tp...>>
{};
template <size_t _Ip, class... _Tp>
struct tuple_element<_Ip, const volatile _CUDA_VSTD::tuple<_Tp...>>
: _CUDA_VSTD::tuple_element<_Ip, const volatile _CUDA_VSTD::tuple<_Tp...>>
{};
} // namespace std
# endif // _LIBCUDACXX_STD_VER > 14
# if defined(_LIBCUDACXX_COMPILER_CLANG)
# pragma clang diagnostic pop
# endif // _LIBCUDACXX_COMPILER_CLANG
#endif // __cuda_std__
#endif // _LIBCUDACXX___TUPLE_STRUCTURED_BINDINGS_H
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