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 28 _LIBCPP_SUPPRESS_DEPRECATED_PUSH 29 template <class _CharT, class _Traits> 30 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator 31 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES) 32 : public iterator<output_iterator_tag, void, void, void, void> 33 #endif 34 { 35 _LIBCPP_SUPPRESS_DEPRECATED_POP 36 37 public: 38 typedef output_iterator_tag iterator_category; 39 typedef void value_type; 40 #if _LIBCPP_STD_VER >= 20 41 typedef ptrdiff_t difference_type; 42 #else 43 typedef void difference_type; 44 #endif 45 typedef void pointer; 46 typedef void reference; 47 typedef _CharT char_type; 48 typedef _Traits traits_type; 49 typedef basic_streambuf<_CharT, _Traits> streambuf_type; 50 typedef basic_ostream<_CharT, _Traits> ostream_type; 51 52 private: 53 streambuf_type* __sbuf_; 54 55 public: 56 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator(ostream_type& __s) _NOEXCEPT : __sbuf_(__s.rdbuf()) {} 57 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT : __sbuf_(__s) {} 58 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator=(_CharT __c) { 59 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) 60 __sbuf_ = nullptr; 61 return *this; 62 } 63 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator*() { return *this; } 64 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator++() { return *this; } 65 _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator& operator++(int) { return *this; } 66 _LIBCPP_HIDE_FROM_ABI bool failed() const _NOEXCEPT { return __sbuf_ == nullptr; } 67 68 #if _LIBCPP_HAS_LOCALIZATION 69 template <class _Ch, class _Tr> 70 friend _LIBCPP_HIDE_FROM_ABI ostreambuf_iterator<_Ch, _Tr> __pad_and_output( 71 ostreambuf_iterator<_Ch, _Tr> __s, const _Ch* __ob, const _Ch* __op, const _Ch* __oe, ios_base& __iob, _Ch __fl); 72 #endif // _LIBCPP_HAS_LOCALIZATION 73 }; 74 75 _LIBCPP_END_NAMESPACE_STD 76 77 #endif // _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H 78