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// -*- C++ -*-
//===----------------------------- iterator -------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#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 <experimental/__config>
#if _LIBCPP_STD_VER > 11
#include <iterator>
_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;
ostream_joiner(ostream_type& __os, _Delim&& __d)
: __output_iter(_VSTD::addressof(__os)), __delim(_VSTD::move(__d)), __first(true) {}
ostream_joiner(ostream_type& __os, const _Delim& __d)
: __output_iter(_VSTD::addressof(__os)), __delim(__d), __first(true) {}
template<typename _Tp>
ostream_joiner& operator=(const _Tp& __v)
{
if (!__first)
*__output_iter << __delim;
__first = false;
*__output_iter << __v;
return *this;
}
ostream_joiner& operator*() _NOEXCEPT { return *this; }
ostream_joiner& operator++() _NOEXCEPT { return *this; }
ostream_joiner& operator++(int) _NOEXCEPT { return *this; }
private:
ostream_type* __output_iter;
_Delim __delim;
bool __first;
};
template <class _CharT, class _Traits, class _Delim>
ostream_joiner<typename decay<_Delim>::type, _CharT, _Traits>
make_ostream_joiner(basic_ostream<_CharT, _Traits>& __os, _Delim && __d)
{ return ostream_joiner<typename decay<_Delim>::type, _CharT, _Traits>(__os, _VSTD::forward<_Delim>(__d)); }
_LIBCPP_END_NAMESPACE_LFTS
#endif /* _LIBCPP_STD_VER > 11 */
#endif // _LIBCPP_EXPERIMENTAL_ITERATOR
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