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_BEGIN_NAMESPACE_STD 26 27 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR) 28 29 _LIBCPP_SUPPRESS_DEPRECATED_PUSH 30 template <class _OutputIterator, class _Tp> 31 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator 32 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) 33 : public iterator<output_iterator_tag, void, void, void, void> 34 #endif 35 { 36 _LIBCPP_SUPPRESS_DEPRECATED_POP 37 private: 38 _OutputIterator __x_; 39 public: 40 typedef output_iterator_tag iterator_category; 41 typedef void value_type; 42 #if _LIBCPP_STD_VER >= 20 43 typedef ptrdiff_t difference_type; 44 #else 45 typedef void difference_type; 46 #endif 47 typedef void pointer; 48 typedef void reference; 49 50 _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {} 51 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;} 52 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element) 53 {::new ((void*)_VSTD::addressof(*__x_)) _Tp(__element); return *this;} 54 #if _LIBCPP_STD_VER >= 14 55 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element) 56 {::new ((void*)_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;} 57 #endif 58 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;} 59 _LIBCPP_INLINE_VISIBILITY raw_storage_iterator operator++(int) 60 {raw_storage_iterator __t(*this); ++__x_; return __t;} 61 #if _LIBCPP_STD_VER >= 14 62 _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; } 63 #endif 64 }; 65 66 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR) 67 68 _LIBCPP_END_NAMESPACE_STD 69 70 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H 71