1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H 11 #define _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H 12 13 #include <__config> 14 #include <__cstddef/ptrdiff_t.h> 15 #include <__iterator/iterator.h> 16 #include <__iterator/iterator_traits.h> 17 #include <__memory/addressof.h> 18 #include <__utility/move.h> 19 20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 21 # pragma GCC system_header 22 #endif 23 24 _LIBCPP_PUSH_MACROS 25 #include <__undef_macros> 26 27 _LIBCPP_BEGIN_NAMESPACE_STD 28 29 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR) 30 31 _LIBCPP_SUPPRESS_DEPRECATED_PUSH 32 template <class _OutputIterator, class _Tp> 33 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator 34 # if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) 35 : public iterator<output_iterator_tag, void, void, void, void> 36 # endif 37 { 38 _LIBCPP_SUPPRESS_DEPRECATED_POP 39 40 private: 41 _OutputIterator __x_; 42 43 public: 44 typedef output_iterator_tag iterator_category; 45 typedef void value_type; 46 # if _LIBCPP_STD_VER >= 20 47 typedef ptrdiff_t difference_type; 48 # else 49 typedef void difference_type; 50 # endif 51 typedef void pointer; 52 typedef void reference; 53 54 _LIBCPP_HIDE_FROM_ABI explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 55 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator*() { return *this; } 56 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator=(const _Tp& __element) { 57 ::new ((void*)std::addressof(*__x_)) _Tp(__element); 58 return *this; 59 } 60 # if _LIBCPP_STD_VER >= 14 61 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator=(_Tp&& __element) { 62 ::new ((void*)std::addressof(*__x_)) _Tp(std::move(__element)); 63 return *this; 64 } 65 # endif 66 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator++() { 67 ++__x_; 68 return *this; 69 } 70 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator operator++(int) { 71 raw_storage_iterator __t(*this); 72 ++__x_; 73 return __t; 74 } 75 # if _LIBCPP_STD_VER >= 14 76 _LIBCPP_HIDE_FROM_ABI _OutputIterator base() const { return __x_; } 77 # endif 78 }; 79 80 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR) 81 82 _LIBCPP_END_NAMESPACE_STD 83 84 _LIBCPP_POP_MACROS 85 86 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H 87