1// <experimental/iterator> -*- C++ -*-
3// Copyright (C) 2015-2017 Free Software Foundation, Inc.
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
25/** @file experimental/iterator
26 * This is a TS C++ Library header.
30// N4336 Working Draft, C++ Extensions for Library Fundamentals, Version 2
33#ifndef _GLIBCXX_EXPERIMENTAL_ITERATOR
34#define _GLIBCXX_EXPERIMENTAL_ITERATOR 1
36#pragma GCC system_header
38#if __cplusplus <= 201103L
39# include <bits/c++14_warning.h>
44#include <experimental/type_traits>
46namespace std _GLIBCXX_VISIBILITY(default)
50inline namespace fundamentals_v2
52_GLIBCXX_BEGIN_NAMESPACE_VERSION
54#define __cpp_lib_experimental_ostream_joiner 201411
56 /// Output iterator that inserts a delimiter between elements.
57 template<typename _DelimT, typename _CharT = char,
58 typename _Traits = char_traits<_CharT>>
62 typedef _CharT char_type;
63 typedef _Traits traits_type;
64 typedef basic_ostream<_CharT, _Traits> ostream_type;
65 typedef output_iterator_tag iterator_category;
66 typedef void value_type;
67 typedef void difference_type;
69 typedef void reference;
71 ostream_joiner(ostream_type& __os, const _DelimT& __delimiter)
72 noexcept(is_nothrow_copy_constructible_v<_DelimT>)
73 : _M_out(std::__addressof(__os)), _M_delim(__delimiter)
76 ostream_joiner(ostream_type& __os, _DelimT&& __delimiter)
77 noexcept(is_nothrow_move_constructible_v<_DelimT>)
78 : _M_out(std::__addressof(__os)), _M_delim(std::move(__delimiter))
81 template<typename _Tp>
83 operator=(const _Tp& __value)
92 ostream_joiner& operator*() noexcept { return *this; }
93 ostream_joiner& operator++() noexcept { return *this; }
94 ostream_joiner& operator++(int) noexcept { return *this; }
102 /// Object generator for ostream_joiner.
103 template<typename _CharT, typename _Traits, typename _DelimT>
104 inline ostream_joiner<decay_t<_DelimT>, _CharT, _Traits>
105 make_ostream_joiner(basic_ostream<_CharT, _Traits>& __os,
106 _DelimT&& __delimiter)
107 { return { __os, std::forward<_DelimT>(__delimiter) }; }
109_GLIBCXX_END_NAMESPACE_VERSION
110} // namespace fundamentals_v2
111} // namespace experimental
114#endif // __cplusplus <= 201103L
116#endif // _GLIBCXX_EXPERIMENTAL_ITERATOR