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>/ ? // class template regex -*- C++ -*-
// Copyright (C) 2013-2021 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
// .
/**
* @file bits/regex.tcc
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{regex}
*/
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace __detail
{
/// @cond undocumented
// Result of merging regex_match and regex_search.
//
// __policy now can be _S_auto (auto dispatch) and _S_alternate (use
// the other one if possible, for test purpose).
//
// That __match_mode is true means regex_match, else regex_search.
template
bool
__regex_algo_impl(_BiIter __s,
_BiIter __e,
match_results<_BiIter, _Alloc>& __m,
const basic_regex<_CharT, _TraitsT>& __re,
regex_constants::match_flag_type __flags)
{
if (__re._M_automaton == nullptr)
return false;
typename match_results<_BiIter, _Alloc>::_Base_type& __res = __m;
__m._M_begin = __s;
__m._M_resize(__re._M_automaton->_M_sub_count());
bool __ret;
if ((__re.flags() & regex_constants::__polynomial)
|| (__policy == _RegexExecutorPolicy::_S_alternate
&& !__re._M_automaton->_M_has_backref))
{
_Executor<_BiIter, _Alloc, _TraitsT, false>
__executor(__s, __e, __m, __re, __flags);
if (__match_mode)
__ret = __executor._M_match();
else
__ret = __executor._M_search();
}
else
{
_Executor<_BiIter, _Alloc, _TraitsT, true>
__executor(__s, __e, __m, __re, __flags);
if (__match_mode)
__ret = __executor._M_match();
else
__ret = __executor._M_search();
}
if (__ret)
{
for (auto& __it : __res)
if (!__it.matched)
__it.first = __it.second = __e;
auto& __pre = __m._M_prefix();
auto& __suf = __m._M_suffix();
if (__match_mode)
{
__pre.matched = false;
__pre.first = __s;
__pre.second = __s;
__suf.matched = false;
__suf.first = __e;
__suf.second = __e;
}
else
{
__pre.first = __s;
__pre.second = __res[0].first;
__pre.matched = (__pre.first != __pre.second);
__suf.first = __res[0].second;
__suf.second = __e;
__suf.matched = (__suf.first != __suf.second);
}
}
else
{
__m._M_establish_failed_match(__e);
}
return __ret;
}
/// @endcond
} // namespace __detail
/// @cond
template
template
typename regex_traits<_Ch_type>::string_type
regex_traits<_Ch_type>::
lookup_collatename(_Fwd_iter __first, _Fwd_iter __last) const
{
typedef std::ctype __ctype_type;
const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale));
static const ch