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_OSTREAM_ITERATOR_H
11 #define _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H
12 
13 #include <__config>
14 #include <__fwd/ostream.h>
15 #include <__fwd/string.h>
16 #include <__iterator/iterator.h>
17 #include <__iterator/iterator_traits.h>
18 #include <__memory/addressof.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 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
28 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> >
29 class _LIBCPP_TEMPLATE_VIS ostream_iterator
30 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
31     : public iterator<output_iterator_tag, void, void, void, void>
32 #endif
33 {
34   _LIBCPP_SUPPRESS_DEPRECATED_POP
35 
36 public:
37   typedef output_iterator_tag iterator_category;
38   typedef void value_type;
39 #if _LIBCPP_STD_VER >= 20
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 _CharT char_type;
47   typedef _Traits traits_type;
48   typedef basic_ostream<_CharT, _Traits> ostream_type;
49 
50 private:
51   ostream_type* __out_stream_;
52   const char_type* __delim_;
53 
54 public:
55   _LIBCPP_HIDE_FROM_ABI ostream_iterator(ostream_type& __s) _NOEXCEPT
56       : __out_stream_(std::addressof(__s)),
57         __delim_(nullptr) {}
58   _LIBCPP_HIDE_FROM_ABI ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT
59       : __out_stream_(std::addressof(__s)),
60         __delim_(__delimiter) {}
61   _LIBCPP_HIDE_FROM_ABI ostream_iterator& operator=(const _Tp& __value) {
62     *__out_stream_ << __value;
63     if (__delim_)
64       *__out_stream_ << __delim_;
65     return *this;
66   }
67 
68   _LIBCPP_HIDE_FROM_ABI ostream_iterator& operator*() { return *this; }
69   _LIBCPP_HIDE_FROM_ABI ostream_iterator& operator++() { return *this; }
70   _LIBCPP_HIDE_FROM_ABI ostream_iterator& operator++(int) { return *this; }
71 };
72 
73 _LIBCPP_END_NAMESPACE_STD
74 
75 #endif // _LIBCPP___ITERATOR_OSTREAM_ITERATOR_H
76