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 <__iterator/iterator.h> 15#include <__iterator/iterator_traits.h> 16#include <cstddef> 17#include <iosfwd> // for forward declaration of basic_streambuf 18 19#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20# pragma GCC system_header 21#endif 22 23_LIBCPP_BEGIN_NAMESPACE_STD 24 25_LIBCPP_SUPPRESS_DEPRECATED_PUSH 26template <class _CharT, class _Traits> 27class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator 28#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) 29 : public iterator<output_iterator_tag, void, void, void, void> 30#endif 31{ 32 _LIBCPP_SUPPRESS_DEPRECATED_POP 33 34public: 35 typedef output_iterator_tag iterator_category; 36 typedef void value_type; 37#if _LIBCPP_STD_VER >= 20 38 typedef ptrdiff_t difference_type; 39#else 40 typedef void difference_type; 41#endif 42 typedef void pointer; 43 typedef void reference; 44 typedef _CharT char_type; 45 typedef _Traits traits_type; 46 typedef basic_streambuf<_CharT, _Traits> streambuf_type; 47 typedef basic_ostream<_CharT, _Traits> ostream_type; 48 49private: 50 streambuf_type* __sbuf_; 51 52public: 53 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator(ostream_type& __s) _NOEXCEPT : __sbuf_(__s.rdbuf()) {} 54 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT : __sbuf_(__s) {} 55 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator=(_CharT __c) { 56 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) 57 __sbuf_ = nullptr; 58 return *this; 59 } 60 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator*() { return *this; } 61 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator++() { return *this; } 62 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator++(int) { return *this; } 63 _LIBCPP_HIDE_FROM_ABI bool failed() const _NOEXCEPT { return __sbuf_ == nullptr; } 64 65 template <class _Ch, class _Tr> 66 friend _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator<_Ch, _Tr> __pad_and_output( 67 ostreambuf_iterator<_Ch, _Tr> __s, const _Ch* __ob, const _Ch* __op, const _Ch* __oe, ios_base& __iob, _Ch __fl); 68}; 69 70_LIBCPP_END_NAMESPACE_STD 71 72#endif // _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H 73