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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_EXPERIMENTAL_ITERATOR
#define _LIBCPP_EXPERIMENTAL_ITERATOR
/*
namespace std {
namespace experimental {
inline namespace fundamentals_v2 {
template <class DelimT, class charT = char, class traits = char_traits<charT>>
class ostream_joiner {
public:
typedef charT char_type;
typedef traits traits_type;
typedef basic_ostream<charT, traits> ostream_type;
typedef output_iterator_tag iterator_category;
typedef void value_type;
typedef void difference_type;
typedef void pointer;
typedef void reference;
ostream_joiner(ostream_type& s, const DelimT& delimiter);
ostream_joiner(ostream_type& s, DelimT&& delimiter);
template<typename T>
ostream_joiner& operator=(const T& value);
ostream_joiner& operator*() noexcept;
ostream_joiner& operator++() noexcept;
ostream_joiner& operator++(int) noexcept;
private:
ostream_type* out_stream; // exposition only
DelimT delim; // exposition only
bool first_element; // exposition only
};
template <class charT, class traits, class DelimT>
ostream_joiner<decay_t<DelimT>, charT, traits>
make_ostream_joiner(basic_ostream<charT, traits>& os, DelimT&& delimiter);
} // inline namespace fundamentals_v2
} // namespace experimental
} // namespace std
*/
#include <__assert> // all public C++ headers provide the assertion handler
#include <__memory/addressof.h>
#include <__type_traits/decay.h>
#include <__utility/forward.h>
#include <__utility/move.h>
#include <experimental/__config>
#include <iosfwd> // char_traits
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if _LIBCPP_STD_VER >= 14
_LIBCPP_BEGIN_NAMESPACE_LFTS
template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
class ostream_joiner {
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef basic_ostream<char_type,traits_type> ostream_type;
typedef output_iterator_tag iterator_category;
typedef void value_type;
typedef void difference_type;
typedef void pointer;
typedef void reference;
_LIBCPP_HIDE_FROM_ABI ostream_joiner(ostream_type& __os, _Delim&& __d)
: __output_iter_(_VSTD::addressof(__os)), __delim_(_VSTD::move(__d)), __first_(true) {}
_LIBCPP_HIDE_FROM_ABI ostream_joiner(ostream_type& __os, const _Delim& __d)
: __output_iter_(_VSTD::addressof(__os)), __delim_(__d), __first_(true) {}
template<typename _Tp>
_LIBCPP_HIDE_FROM_ABI ostream_joiner& operator=(const _Tp& __v)
{
if (!__first_)
*__output_iter_ << __delim_;
__first_ = false;
*__output_iter_ << __v;
return *this;
}
_LIBCPP_HIDE_FROM_ABI ostream_joiner& operator*() _NOEXCEPT { return *this; }
_LIBCPP_HIDE_FROM_ABI ostream_joiner& operator++() _NOEXCEPT { return *this; }
_LIBCPP_HIDE_FROM_ABI ostream_joiner& operator++(int) _NOEXCEPT { return *this; }
private:
ostream_type* __output_iter_;
_Delim __delim_;
bool __first_;
};
template <class _CharT, class _Traits, class _Delim>
_LIBCPP_HIDE_FROM_ABI ostream_joiner<__decay_t<_Delim>, _CharT, _Traits>
make_ostream_joiner(basic_ostream<_CharT, _Traits>& __os, _Delim && __d)
{ return ostream_joiner<__decay_t<_Delim>, _CharT, _Traits>(__os, _VSTD::forward<_Delim>(__d)); }
_LIBCPP_END_NAMESPACE_LFTS
#endif // _LIBCPP_STD_VER >= 14
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <type_traits>
#endif
#endif // _LIBCPP_EXPERIMENTAL_ITERATOR
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