third_party/llvm-project/libcxx/include/__type_traits/is_nothrow_copy_constructible.h

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___TYPE_TRAITS_IS_NOTHROW_COPY_CONSTRUCTIBLE_H
#define _LIBCPP___TYPE_TRAITS_IS_NOTHROW_COPY_CONSTRUCTIBLE_H

#include <__config>
#include <__type_traits/add_const.h>
#include <__type_traits/add_lvalue_reference.h>
#include <__type_traits/integral_constant.h>
#include <__type_traits/is_nothrow_constructible.h>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

// TODO: remove this implementation once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is fixed
#ifdef _LIBCPP_COMPILER_GCC

template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_constructible
    : public is_nothrow_constructible<_Tp,
                  __add_lvalue_reference_t<typename add_const<_Tp>::type> > {};

#else // _LIBCPP_COMPILER_GCC

template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_constructible
    : public integral_constant<
          bool,
          __is_nothrow_constructible(_Tp, typename add_lvalue_reference<typename add_const<_Tp>::type>::type)> {};

#endif // _LIBCPP_COMPILER_GCC

#if _LIBCPP_STD_VER >= 17
template <class _Tp>
inline constexpr bool is_nothrow_copy_constructible_v = is_nothrow_copy_constructible<_Tp>::value;
#endif

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___TYPE_TRAITS_IS_NOTHROW_COPY_CONSTRUCTIBLE_H