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___ITERATOR_INSERT_ITERATOR_H 11 #define _LIBCPP___ITERATOR_INSERT_ITERATOR_H 12 13 #include <__config> 14 #include <__iterator/iterator.h> 15 #include <__iterator/iterator_traits.h> 16 #include <__memory/addressof.h> 17 #include <__ranges/access.h> 18 #include <__utility/move.h> 19 #include <cstddef> 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 !defined(_LIBCPP_HAS_NO_CONCEPTS) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 28 template <class _Container> 29 using __insert_iterator_iter_t = ranges::iterator_t<_Container>; 30 #else 31 template <class _Container> 32 using __insert_iterator_iter_t = typename _Container::iterator; 33 #endif 34 35 _LIBCPP_SUPPRESS_DEPRECATED_PUSH 36 template <class _Container> 37 class _LIBCPP_TEMPLATE_VIS insert_iterator 38 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) 39 : public iterator<output_iterator_tag, void, void, void, void> 40 #endif 41 { 42 _LIBCPP_SUPPRESS_DEPRECATED_POP 43 protected: 44 _Container* container; 45 __insert_iterator_iter_t<_Container> iter; 46 public: 47 typedef output_iterator_tag iterator_category; 48 typedef void value_type; 49 #if _LIBCPP_STD_VER > 17 50 typedef ptrdiff_t difference_type; 51 #else 52 typedef void difference_type; 53 #endif 54 typedef void pointer; 55 typedef void reference; 56 typedef _Container container_type; 57 58 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 insert_iterator(_Container& __x, __insert_iterator_iter_t<_Container> __i) 59 : container(_VSTD::addressof(__x)), iter(__i) {} 60 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 insert_iterator& operator=(const typename _Container::value_type& __value_) 61 {iter = container->insert(iter, __value_); ++iter; return *this;} 62 #ifndef _LIBCPP_CXX03_LANG 63 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 insert_iterator& operator=(typename _Container::value_type&& __value_) 64 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;} 65 #endif // _LIBCPP_CXX03_LANG 66 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 insert_iterator& operator*() {return *this;} 67 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 insert_iterator& operator++() {return *this;} 68 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 insert_iterator& operator++(int) {return *this;} 69 }; 70 71 template <class _Container> 72 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 73 insert_iterator<_Container> 74 inserter(_Container& __x, __insert_iterator_iter_t<_Container> __i) 75 { 76 return insert_iterator<_Container>(__x, __i); 77 } 78 79 _LIBCPP_END_NAMESPACE_STD 80 81 #endif // _LIBCPP___ITERATOR_INSERT_ITERATOR_H 82