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___VECTOR_CONTAINER_TRAITS_H 10 #define _LIBCPP___VECTOR_CONTAINER_TRAITS_H 11 12 #include <__config> 13 #include <__fwd/vector.h> 14 #include <__memory/allocator_traits.h> 15 #include <__type_traits/container_traits.h> 16 #include <__type_traits/disjunction.h> 17 #include <__type_traits/is_nothrow_constructible.h> 18 19 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20 # pragma GCC system_header 21 #endif 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 template <class _Tp, class _Allocator> 26 struct __container_traits<vector<_Tp, _Allocator> > { 27 // http://eel.is/c++draft/vector.modifiers#2 28 // If an exception is thrown other than by the copy constructor, move constructor, assignment operator, or move 29 // assignment operator of T or by any InputIterator operation, there are no effects. If an exception is thrown while 30 // inserting a single element at the end and T is Cpp17CopyInsertable or is_nothrow_move_constructible_v<T> is true, 31 // there are no effects. Otherwise, if an exception is thrown by the move constructor of a non-Cpp17CopyInsertable T, 32 // the effects are unspecified. 33 static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = 34 _Or<is_nothrow_move_constructible<_Tp>, __is_cpp17_copy_insertable<_Allocator> >::value; 35 }; 36 37 _LIBCPP_END_NAMESPACE_STD 38 39 #endif // _LIBCPP___VECTOR_CONTAINER_TRAITS_H 40