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4abbf7dac3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
114 lines
3.8 KiB
C++
114 lines
3.8 KiB
C++
// -*- C++ -*-
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//===----------------------------- iterator -------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_EXPERIMENTAL_ITERATOR
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#define _LIBCPP_EXPERIMENTAL_ITERATOR
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/*
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namespace std {
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namespace experimental {
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inline namespace fundamentals_v2 {
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template <class DelimT, class charT = char, class traits = char_traits<charT>>
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class ostream_joiner {
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public:
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typedef charT char_type;
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typedef traits traits_type;
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typedef basic_ostream<charT, traits> ostream_type;
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typedef output_iterator_tag iterator_category;
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typedef void value_type;
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typedef void difference_type;
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typedef void pointer;
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typedef void reference;
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ostream_joiner(ostream_type& s, const DelimT& delimiter);
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ostream_joiner(ostream_type& s, DelimT&& delimiter);
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template<typename T>
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ostream_joiner& operator=(const T& value);
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ostream_joiner& operator*() noexcept;
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ostream_joiner& operator++() noexcept;
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ostream_joiner& operator++(int) noexcept;
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private:
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ostream_type* out_stream; // exposition only
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DelimT delim; // exposition only
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bool first_element; // exposition only
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};
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template <class charT, class traits, class DelimT>
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ostream_joiner<decay_t<DelimT>, charT, traits>
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make_ostream_joiner(basic_ostream<charT, traits>& os, DelimT&& delimiter);
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} // inline namespace fundamentals_v2
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} // namespace experimental
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} // namespace std
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*/
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#include <experimental/__config>
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#if _LIBCPP_STD_VER > 11
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#include <iterator>
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_LIBCPP_BEGIN_NAMESPACE_LFTS
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template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
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class ostream_joiner {
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public:
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typedef _CharT char_type;
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typedef _Traits traits_type;
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typedef basic_ostream<char_type,traits_type> ostream_type;
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typedef output_iterator_tag iterator_category;
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typedef void value_type;
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typedef void difference_type;
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typedef void pointer;
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typedef void reference;
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ostream_joiner(ostream_type& __os, _Delim&& __d)
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: __output_iter(_VSTD::addressof(__os)), __delim(_VSTD::move(__d)), __first(true) {}
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ostream_joiner(ostream_type& __os, const _Delim& __d)
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: __output_iter(_VSTD::addressof(__os)), __delim(__d), __first(true) {}
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template<typename _Tp>
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ostream_joiner& operator=(const _Tp& __v)
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{
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if (!__first)
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*__output_iter << __delim;
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__first = false;
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*__output_iter << __v;
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return *this;
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}
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ostream_joiner& operator*() _NOEXCEPT { return *this; }
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ostream_joiner& operator++() _NOEXCEPT { return *this; }
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ostream_joiner& operator++(int) _NOEXCEPT { return *this; }
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private:
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ostream_type* __output_iter;
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_Delim __delim;
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bool __first;
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};
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template <class _CharT, class _Traits, class _Delim>
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ostream_joiner<typename decay<_Delim>::type, _CharT, _Traits>
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make_ostream_joiner(basic_ostream<_CharT, _Traits>& __os, _Delim && __d)
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{ return ostream_joiner<typename decay<_Delim>::type, _CharT, _Traits>(__os, _VSTD::forward<_Delim>(__d)); }
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_LIBCPP_END_NAMESPACE_LFTS
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#endif /* _LIBCPP_STD_VER > 11 */
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#endif // _LIBCPP_EXPERIMENTAL_ITERATOR
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