115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
// -*- 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)
|
|
: __out(_VSTD::addressof(__os)), __delim(_VSTD::move(__d)), __first(true) {}
|
|
|
|
ostream_joiner(ostream_type& __os, const _Delim& __d)
|
|
: __out(_VSTD::addressof(__os)), __delim(__d), __first(true) {}
|
|
|
|
|
|
template<typename _Tp>
|
|
ostream_joiner& operator=(const _Tp& __v)
|
|
{
|
|
if (!__first)
|
|
*__out << __delim;
|
|
__first = false;
|
|
*__out << __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* __out;
|
|
_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
|