1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef _LIBCPP___TYPE_TRAITS_NOEXCEPT_MOVE_ASSIGN_CONTAINER_H
10 #define _LIBCPP___TYPE_TRAITS_NOEXCEPT_MOVE_ASSIGN_CONTAINER_H
11 
12 #include <__config>
13 #include <__memory/allocator_traits.h>
14 #include <__type_traits/integral_constant.h>
15 #include <__type_traits/is_nothrow_move_assignable.h>
16 
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 #  pragma GCC system_header
19 #endif
20 
21 _LIBCPP_BEGIN_NAMESPACE_STD
22 
23 template <typename _Alloc, typename _Traits = allocator_traits<_Alloc> >
24 struct __noexcept_move_assign_container
25     : public integral_constant<bool,
26                                _Traits::propagate_on_container_move_assignment::value
27 #if _LIBCPP_STD_VER >= 17
28                                    || _Traits::is_always_equal::value
29 #else
30                                    && is_nothrow_move_assignable<_Alloc>::value
31 #endif
32                                > {
33 };
34 
35 _LIBCPP_END_NAMESPACE_STD
36 
37 #endif // _LIBCPP___TYPE_TRAITS_NOEXCEPT_MOVE_ASSIGN_CONTAINER_H
38