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_BACK_INSERT_ITERATOR_H
11#define _LIBCPP___ITERATOR_BACK_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 <__utility/move.h>
18#include <cstddef>
19
20#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
21# pragma GCC system_header
22#endif
23
24_LIBCPP_BEGIN_NAMESPACE_STD
25
26_LIBCPP_SUPPRESS_DEPRECATED_PUSH
27template <class _Container>
28class _LIBCPP_TEMPLATE_VIS back_insert_iterator
29#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
30 : public iterator<output_iterator_tag, void, void, void, void>
31#endif
32{
33_LIBCPP_SUPPRESS_DEPRECATED_POP
34protected:
35 _Container* container;
36public:
37 typedef output_iterator_tag iterator_category;
38 typedef void value_type;
39#if _LIBCPP_STD_VER > 17
40 typedef ptrdiff_t difference_type;
41#else
42 typedef void difference_type;
43#endif
44 typedef void pointer;
45 typedef void reference;
46 typedef _Container container_type;
47
48 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
49 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 back_insert_iterator& operator=(const typename _Container::value_type& __value)
50 {container->push_back(__value); return *this;}
51#ifndef _LIBCPP_CXX03_LANG
52 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 back_insert_iterator& operator=(typename _Container::value_type&& __value)
53 {container->push_back(_VSTD::move(__value)); return *this;}
54#endif // _LIBCPP_CXX03_LANG
55 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 back_insert_iterator& operator*() {return *this;}
56 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 back_insert_iterator& operator++() {return *this;}
57 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 back_insert_iterator operator++(int) {return *this;}
58
59 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 _Container* __get_container() const { return container; }
60};
61
62template <class _Container>
63inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17
64back_insert_iterator<_Container>
65back_inserter(_Container& __x)
66{
67 return back_insert_iterator<_Container>(__x);
68}
69
70_LIBCPP_END_NAMESPACE_STD
71
72#endif // _LIBCPP___ITERATOR_BACK_INSERT_ITERATOR_H
73

source code of flutter_engine/third_party/libcxx/include/__iterator/back_insert_iterator.h