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_OSTREAMBUF_ITERATOR_H
11#define _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H
12
13#include <__config>
14#include <__cstddef/ptrdiff_t.h>
15#include <__fwd/ios.h>
16#include <__fwd/ostream.h>
17#include <__fwd/streambuf.h>
18#include <__iterator/iterator.h>
19#include <__iterator/iterator_traits.h>
20#include <iosfwd> // for forward declaration of ostreambuf_iterator
21
22#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
23# pragma GCC system_header
24#endif
25
26_LIBCPP_BEGIN_NAMESPACE_STD
27
28template <class _CharT, class _Traits>
29class ostreambuf_iterator
30 : public __iterator_base<ostreambuf_iterator<_CharT, _Traits>, output_iterator_tag, void, void, void, void> {
31public:
32 typedef output_iterator_tag iterator_category;
33 typedef void value_type;
34#if _LIBCPP_STD_VER >= 20
35 typedef ptrdiff_t difference_type;
36#else
37 typedef void difference_type;
38#endif
39 typedef void pointer;
40 typedef void reference;
41 typedef _CharT char_type;
42 typedef _Traits traits_type;
43 typedef basic_streambuf<_CharT, _Traits> streambuf_type;
44 typedef basic_ostream<_CharT, _Traits> ostream_type;
45
46private:
47 streambuf_type* __sbuf_;
48
49public:
50 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator(ostream_type& __s) _NOEXCEPT : __sbuf_(__s.rdbuf()) {}
51 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT : __sbuf_(__s) {}
52 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator=(_CharT __c) {
53 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof()))
54 __sbuf_ = nullptr;
55 return *this;
56 }
57 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator*() { return *this; }
58 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator++() { return *this; }
59 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator++(int) { return *this; }
60 _LIBCPP_HIDE_FROM_ABI bool failed() const _NOEXCEPT { return __sbuf_ == nullptr; }
61
62#if _LIBCPP_HAS_LOCALIZATION
63 template <class _Ch, class _Tr>
64 friend _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator<_Ch, _Tr> __pad_and_output(
65 ostreambuf_iterator<_Ch, _Tr> __s, const _Ch* __ob, const _Ch* __op, const _Ch* __oe, ios_base& __iob, _Ch __fl);
66#endif // _LIBCPP_HAS_LOCALIZATION
67};
68
69_LIBCPP_END_NAMESPACE_STD
70
71#endif // _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H
72