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// class template regex -*- C++ -*- |
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// 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. |
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// 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. |
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// 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. |
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// 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/>. |
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/** |
* @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} |
*/ |
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namespace std _GLIBCXX_VISIBILITY(default) |
{ |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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template<typename _BiIter> |
class sub_match; |
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template<typename _Bi_iter, typename _Allocator> |
class match_results; |
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_GLIBCXX_END_NAMESPACE_VERSION |
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namespace __detail |
{ |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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/** |
* @defgroup regex-detail Base and Implementation Classes |
* @ingroup regex |
* @{ |
*/ |
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/// 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); |
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void |
_M_set_pos(int __i, int __j, const _PatternCursor& __pc); |
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void |
_M_set_matched(int __i, bool __is_matched) |
{ _M_results.at(__i).matched = __is_matched; } |
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private: |
match_results<_FwdIterT, _Alloc>& _M_results; |
}; |
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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); |
} |
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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; |
} |
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/// A stack of states used in evaluating the NFA. |
typedef std::stack<_StateIdT, std::vector<_StateIdT> > _StateStack; |
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/// 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); |
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private: |
_StateSet |
_M_e_closure(_StateIdT __i); |
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_StateSet |
_M_e_closure(const _StateSet& __s); |
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_StateSet |
_M_e_closure(_StateStack& __stack, const _StateSet& __s); |
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const std::shared_ptr<_Nfa> _M_nfa; |
_PatternCursor& _M_pattern; |
_Results& _M_results; |
}; |
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//@} regex-detail |
_GLIBCXX_END_NAMESPACE_VERSION |
} // namespace __detail |
} // namespace std |
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#include <bits/regex_grep_matcher.tcc> |