gcc/libstdc++-v3/include/experimental/string
Jonathan Wakely 1bc7a28f94 PR libstdc++/87061 remove pmr type aliases for COW strings
The pmr aliases for basic_string and match_results are incompatible with
the gcc4-compatible ABI because the Copy-On-Write basic_string class
doesn't support C++11 allocators.

	PR libstdc++/87061
	* include/experimental/regex [!_GLIBCXX_USE_CXX11_ABI]
	(experimental::pmr::match_results, experimental::pmr::cmatch)
	(experimental::pmr::smatch, experimental::pmr::wcmatch)
	(experimental::pmr::wsmatch): Do not declare for gcc4-compatible ABI,
	because COW strings don't support C++11 allocator model.
	* include/experimental/string [!_GLIBCXX_USE_CXX11_ABI]
	(experimental::pmr::basic_string, experimental::pmr::string)
	(experimental::pmr::u16string, experimental::pmr::u32string)
	(experimental::pmr::wstring): Likewise.
	* include/std/regex [!_GLIBCXX_USE_CXX11_ABI] (pmr::match_results)
	(pmr::cmatch, pmr::smatch, pmr::wcmatch, pmr::wsmatch): Likewise.
	* include/std/string [!_GLIBCXX_USE_CXX11_ABI] (pmr::basic_string)
	(pmr::string, pmr::u16string, pmr::u32string, pmr::wstring): Likewise.
	* testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Require
	cxx11-abi.
	* testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.

From-SVN: r263791
2018-08-22 23:54:33 +01:00

91 lines
2.8 KiB
C++

// <experimental/string> -*- C++ -*-
// Copyright (C) 2015-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file experimental/string
* This is a TS C++ Library header.
*/
#ifndef _GLIBCXX_EXPERIMENTAL_STRING
#define _GLIBCXX_EXPERIMENTAL_STRING 1
#pragma GCC system_header
#if __cplusplus >= 201402L
#include <string>
#include <algorithm>
#include <experimental/memory_resource>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace experimental
{
inline namespace fundamentals_v2
{
template<typename _CharT, typename _Traits, typename _Alloc,
typename _Predicate>
inline void
erase_if(basic_string<_CharT, _Traits, _Alloc>& __cont, _Predicate __pred)
{
__cont.erase(std::remove_if(__cont.begin(), __cont.end(), __pred),
__cont.end());
}
template<typename _CharT, typename _Traits, typename _Alloc, typename _Up>
inline void
erase(basic_string<_CharT, _Traits, _Alloc>& __cont, const _Up& __value)
{
__cont.erase(std::remove(__cont.begin(), __cont.end(), __value),
__cont.end());
}
#if _GLIBCXX_USE_CXX11_ABI
namespace pmr
{
// basic_string using polymorphic allocator in namespace pmr
template<typename _CharT, typename _Traits = char_traits<_CharT>>
using basic_string =
std::basic_string<_CharT, _Traits, polymorphic_allocator<_CharT>>;
// basic_string typedef names using polymorphic allocator in namespace
// std::experimental::pmr
typedef basic_string<char> string;
typedef basic_string<char16_t> u16string;
typedef basic_string<char32_t> u32string;
typedef basic_string<wchar_t> wstring;
} // namespace pmr
#endif
} // namespace fundamentals_v2
} // namespace experimental
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++14
#endif // _GLIBCXX_EXPERIMENTAL_STRING