chromium/third_party/libc++/src/include/__utility/in_place.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___UTILITY_IN_PLACE_H
#define _LIBCPP___UTILITY_IN_PLACE_H

#include <__config>
#include <__type_traits/remove_cvref.h>
#include <cstddef>

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

_LIBCPP_BEGIN_NAMESPACE_STD

#if _LIBCPP_STD_VER >= 17

struct _LIBCPP_EXPORTED_FROM_ABI in_place_t { … };
inline constexpr in_place_t in_place{ … };

template <class _Tp>
struct _LIBCPP_TEMPLATE_VIS in_place_type_t { … };
in_place_type;

template <size_t _Idx>
struct _LIBCPP_TEMPLATE_VIS in_place_index_t { … };
in_place_index;

template <class _Tp>
struct __is_inplace_type_imp : false_type { … };
__is_inplace_type_imp<in_place_type_t<_Tp>>;

__is_inplace_type;

template <class _Tp>
struct __is_inplace_index_imp : false_type { … };
__is_inplace_index_imp<in_place_index_t<_Idx>>;

__is_inplace_index;

#endif // _LIBCPP_STD_VER >= 17

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___UTILITY_IN_PLACE_H