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// class template regex -*- C++ -*- // Copyright (C) 2010-2013 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 bits/regex_grep_matcher.h * 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 template<typename _BiIter> class sub_match; template<typename _Bi_iter, typename _Allocator> class match_results; _GLIBCXX_END_NAMESPACE_VERSION namespace __detail { _GLIBCXX_BEGIN_NAMESPACE_VERSION /** * @defgroup regex-detail Base and Implementation Classes * @ingroup regex * @{ */ /// A _Results facade specialized for wrapping a templated match_results. template<typename _FwdIterT, typename _Alloc> class _SpecializedResults : public _Results { public: _SpecializedResults(const _Automaton::_SizeT __size, const _SpecializedCursor<_FwdIterT>& __cursor, match_results<_FwdIterT, _Alloc>& __m); void _M_set_pos(int __i, int __j, const _PatternCursor& __pc); void _M_set_matched(int __i, bool __is_matched) { _M_results.at(__i).matched = __is_matched; } private: match_results<_FwdIterT, _Alloc>& _M_results; }; template<typename _FwdIterT, typename _Alloc> _SpecializedResults<_FwdIterT, _Alloc>:: _SpecializedResults(const _Automaton::_SizeT __size, const _SpecializedCursor<_FwdIterT>& __cursor, match_results<_FwdIterT, _Alloc>& __m) : _M_results(__m) { _M_results.clear(); _M_results.reserve(__size + 2); _M_results.resize(__size); typename match_results<_FwdIterT, _Alloc>::value_type __sm; __sm.first = __sm.second = __cursor._M_begin(); _M_results.push_back(__sm); __sm.first = __sm.second = __cursor._M_end(); _M_results.push_back(__sm); } template<typename _FwdIterT, typename _Alloc> void _SpecializedResults<_FwdIterT, _Alloc>:: _M_set_pos(int __i, int __j, const _PatternCursor& __pc) { typedef const _SpecializedCursor<_FwdIterT>& _CursorT; _CursorT __c = static_cast<_CursorT>(__pc); if (__j == 0) _M_results.at(__i).first = __c._M_pos(); else _M_results.at(__i).second = __c._M_pos()+1; } /// A stack of states used in evaluating the NFA. typedef std::stack<_StateIdT, std::vector<_StateIdT> > _StateStack; /// Executes a regular expression NFA/DFA over a range using a /// variant of the parallel execution algorithm featured in the grep /// utility, modified to use Laurikari tags. class _Grep_matcher { public: _Grep_matcher(_PatternCursor& __p, _Results& __r, const _AutomatonPtr& __automaton, regex_constants::match_flag_type __flags); private: _StateSet _M_e_closure(_StateIdT __i); _StateSet _M_e_closure(const _StateSet& __s); _StateSet _M_e_closure(_StateStack& __stack, const _StateSet& __s); const std::shared_ptr<_Nfa> _M_nfa; _PatternCursor& _M_pattern; _Results& _M_results; }; //@} regex-detail _GLIBCXX_END_NAMESPACE_VERSION } // namespace __detail } // namespace std #include <bits/regex_grep_matcher.tcc>
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