Warning, /include/c++/v1/experimental/iterator is written in an unsupported language. File is not indexed.
0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP_EXPERIMENTAL_ITERATOR
0011 #define _LIBCPP_EXPERIMENTAL_ITERATOR
0012
0013 /*
0014 namespace std {
0015 namespace experimental {
0016 inline namespace fundamentals_v2 {
0017
0018 template <class DelimT, class charT = char, class traits = char_traits<charT>>
0019 class ostream_joiner {
0020 public:
0021 typedef charT char_type;
0022 typedef traits traits_type;
0023 typedef basic_ostream<charT, traits> ostream_type;
0024 typedef output_iterator_tag iterator_category;
0025 typedef void value_type;
0026 typedef void difference_type;
0027 typedef void pointer;
0028 typedef void reference;
0029
0030 ostream_joiner(ostream_type& s, const DelimT& delimiter);
0031 ostream_joiner(ostream_type& s, DelimT&& delimiter);
0032
0033 template<typename T>
0034 ostream_joiner& operator=(const T& value);
0035
0036 ostream_joiner& operator*() noexcept;
0037 ostream_joiner& operator++() noexcept;
0038 ostream_joiner& operator++(int) noexcept;
0039 private:
0040 ostream_type* out_stream; // exposition only
0041 DelimT delim; // exposition only
0042 bool first_element; // exposition only
0043 };
0044
0045 template <class charT, class traits, class DelimT>
0046 ostream_joiner<decay_t<DelimT>, charT, traits>
0047 make_ostream_joiner(basic_ostream<charT, traits>& os, DelimT&& delimiter);
0048
0049 } // inline namespace fundamentals_v2
0050 } // namespace experimental
0051 } // namespace std
0052
0053 */
0054
0055 #if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
0056 # include <__cxx03/experimental/iterator>
0057 #else
0058 # include <__config>
0059 # include <__memory/addressof.h>
0060 # include <__ostream/basic_ostream.h>
0061 # include <__string/char_traits.h>
0062 # include <__type_traits/decay.h>
0063 # include <__utility/forward.h>
0064 # include <__utility/move.h>
0065 # include <iterator>
0066
0067 # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0068 # pragma GCC system_header
0069 # endif
0070
0071 _LIBCPP_PUSH_MACROS
0072 # include <__undef_macros>
0073
0074 # if _LIBCPP_STD_VER >= 14
0075
0076 _LIBCPP_BEGIN_NAMESPACE_LFTS
0077
0078 template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
0079 class ostream_joiner {
0080 public:
0081 typedef _CharT char_type;
0082 typedef _Traits traits_type;
0083 typedef basic_ostream<char_type, traits_type> ostream_type;
0084 typedef output_iterator_tag iterator_category;
0085 typedef void value_type;
0086 typedef void difference_type;
0087 typedef void pointer;
0088 typedef void reference;
0089
0090 _LIBCPP_HIDE_FROM_ABI ostream_joiner(ostream_type& __os, _Delim&& __d)
0091 : __output_iter_(std::addressof(__os)), __delim_(std::move(__d)), __first_(true) {}
0092
0093 _LIBCPP_HIDE_FROM_ABI ostream_joiner(ostream_type& __os, const _Delim& __d)
0094 : __output_iter_(std::addressof(__os)), __delim_(__d), __first_(true) {}
0095
0096 template <typename _Tp>
0097 _LIBCPP_HIDE_FROM_ABI ostream_joiner& operator=(const _Tp& __v) {
0098 if (!__first_)
0099 *__output_iter_ << __delim_;
0100 __first_ = false;
0101 *__output_iter_ << __v;
0102 return *this;
0103 }
0104
0105 _LIBCPP_HIDE_FROM_ABI ostream_joiner& operator*() _NOEXCEPT { return *this; }
0106 _LIBCPP_HIDE_FROM_ABI ostream_joiner& operator++() _NOEXCEPT { return *this; }
0107 _LIBCPP_HIDE_FROM_ABI ostream_joiner& operator++(int) _NOEXCEPT { return *this; }
0108
0109 private:
0110 ostream_type* __output_iter_;
0111 _Delim __delim_;
0112 bool __first_;
0113 };
0114
0115 template <class _CharT, class _Traits, class _Delim>
0116 _LIBCPP_HIDE_FROM_ABI ostream_joiner<__decay_t<_Delim>, _CharT, _Traits>
0117 make_ostream_joiner(basic_ostream<_CharT, _Traits>& __os, _Delim&& __d) {
0118 return ostream_joiner<__decay_t<_Delim>, _CharT, _Traits>(__os, std::forward<_Delim>(__d));
0119 }
0120
0121 _LIBCPP_END_NAMESPACE_LFTS
0122
0123 # endif // _LIBCPP_STD_VER >= 14
0124
0125 _LIBCPP_POP_MACROS
0126
0127 # if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
0128 # include <cstddef>
0129 # include <iosfwd>
0130 # include <type_traits>
0131 # endif
0132 #endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
0133
0134 #endif // _LIBCPP_EXPERIMENTAL_ITERATOR
