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 <__iterator/iterator.h> 15 #include <__iterator/iterator_traits.h> 16 #include <__memory/addressof.h> 17 #include <__utility/move.h> 18 #include <cstddef> 19 #include <new> 20 21 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 22 # pragma GCC system_header 23 #endif 24 25 _LIBCPP_PUSH_MACROS 26 #include <__undef_macros> 27 28 _LIBCPP_BEGIN_NAMESPACE_STD 29 30 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR) 31 32 _LIBCPP_SUPPRESS_DEPRECATED_PUSH 33 template <class _OutputIterator, class _Tp> 34 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator 35 # if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) 36 : public iterator<output_iterator_tag, void, void, void, void> 37 # endif 38 { 39 _LIBCPP_SUPPRESS_DEPRECATED_POP 40 41 private: 42 _OutputIterator __x_; 43 44 public: 45 typedef output_iterator_tag iterator_category; 46 typedef void value_type; 47 # if _LIBCPP_STD_VER >= 20 48 typedef ptrdiff_t difference_type; 49 # else 50 typedef void difference_type; 51 # endif 52 typedef void pointer; 53 typedef void reference; 54 55 _LIBCPP_HIDE_FROM_ABI explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 56 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator*() { return *this; } 57 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator=(const _Tp& __element) { 58 ::new ((void*)std::addressof(*__x_)) _Tp(__element); 59 return *this; 60 } 61 # if _LIBCPP_STD_VER >= 14 62 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator=(_Tp&& __element) { 63 ::new ((void*)std::addressof(*__x_)) _Tp(std::move(__element)); 64 return *this; 65 } 66 # endif 67 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator++() { 68 ++__x_; 69 return *this; 70 } 71 _LIBCPP_HIDE_FROM_ABI raw_storage_iterator operator++(int) { 72 raw_storage_iterator __t(*this); 73 ++__x_; 74 return __t; 75 } 76 # if _LIBCPP_STD_VER >= 14 77 _LIBCPP_HIDE_FROM_ABI _OutputIterator base() const { return __x_; } 78 # endif 79 }; 80 81 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR) 82 83 _LIBCPP_END_NAMESPACE_STD 84 85 _LIBCPP_POP_MACROS 86 87 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H 88