relax_tagger.h

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//
//    FreeLing - Open Source Language Analyzers
//
//    Copyright (C) 2004   TALP Research Center
//                         Universitat Politecnica de Catalunya
//
//    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 of the License, 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.
//
//    You should have received a copy of the GNU General Public
//    License along with this library; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
//    contact: Lluis Padro (padro@lsi.upc.es)
//             TALP Research Center
//             despatx C6.212 - Campus Nord UPC
//             08034 Barcelona.  SPAIN
//

#ifndef _RELAX_TAGGER
#define _RELAX_TAGGER

#include <list> 
#include <string>
#include <boost/regex/icu.hpp>

#include "freeling/windll.h"
#include "freeling/morfo/language.h"
#include "freeling/morfo/tagger.h"
#include "freeling/morfo/relax.h"
#include "freeling/morfo/constraint_grammar.h"

// RegExp to detect user field usage
const std::wstring USER_RE=L"^u\\.([0-9]+)=(.+)$";



class WINDLL relax_tagger : public POS_tagger {
 private:
  relax solver;
  constraint_grammar c_gram;

  // RegExp to detect user field usage. It's stored here precompiled for efficiency.
  boost::u32regex RE_user;

  bool CheckCondition(const sentence &, sentence::const_iterator, int, 
                      const condition &, std::list<std::list<std::pair<int,int> > > &);
  bool CheckWordMatchCondition(const std::list<std::wstring> &, bool, int, sentence::const_iterator,
                               std::list<std::pair<int,int> > &);
  bool check_possible_matching(const std::wstring &, word::const_iterator,
                               sentence::const_iterator); 
  bool check_match(const std::wstring &, const std::wstring &) const;

 public:
  relax_tagger(const std::wstring &, int, double, double, bool, unsigned int);

  void annotate(sentence &);
};


#endif