368faacac7
This commit reverts 5aaefa51 (and also partly 7f285f48e77 and b6d75682f9, which were related to the original commit). As landed, 5aaefa51 had unintended consequences on some downstream bots and didn't have proper coverage upstream due to a few subtle things. Implementing this is something we should do in libc++, however we'll first need to address a few issues listed in https://reviews.llvm.org/D106124#3349710. Differential Revision: https://reviews.llvm.org/D120683
77 lines
2.9 KiB
C++
77 lines
2.9 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H
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#define _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H
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#include <__config>
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#include <__iterator/iterator.h>
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#include <__iterator/iterator_traits.h>
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#include <iosfwd> // for forward declaration of basic_streambuf
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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_LIBCPP_SUPPRESS_DEPRECATED_PUSH
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template <class _CharT, class _Traits>
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class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator
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#if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
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: public iterator<output_iterator_tag, void, void, void, void>
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#endif
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{
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_LIBCPP_SUPPRESS_DEPRECATED_POP
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public:
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typedef output_iterator_tag iterator_category;
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typedef void value_type;
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#if _LIBCPP_STD_VER > 17
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typedef ptrdiff_t difference_type;
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#else
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typedef void difference_type;
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#endif
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typedef void pointer;
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typedef void reference;
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typedef _CharT char_type;
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typedef _Traits traits_type;
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typedef basic_streambuf<_CharT, _Traits> streambuf_type;
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typedef basic_ostream<_CharT, _Traits> ostream_type;
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private:
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streambuf_type* __sbuf_;
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public:
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_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT
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: __sbuf_(__s.rdbuf()) {}
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_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT
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: __sbuf_(__s) {}
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_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c)
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{
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if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof()))
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__sbuf_ = nullptr;
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return *this;
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}
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_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;}
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_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;}
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_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;}
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_LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == nullptr;}
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template <class _Ch, class _Tr>
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friend
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_LIBCPP_HIDDEN
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ostreambuf_iterator<_Ch, _Tr>
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__pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s,
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const _Ch* __ob, const _Ch* __op, const _Ch* __oe,
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ios_base& __iob, _Ch __fl);
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ITERATOR_OSTREAMBUF_ITERATOR_H
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