fex_lexicon.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 _FEX_LEXICON
#define _FEX_LEXICON

#include <map>
#include <set>
#include <string>


class lex_entry {
 public:
  unsigned int code;
  unsigned int freq;
  lex_entry(unsigned int c, unsigned int f) {code=c; freq=f;};
};



class fex_lexicon : std::map<std::wstring,lex_entry> {

 private:
  unsigned int freq_sum;
  unsigned int next_code;
  std::set<unsigned int> known_codes;

 public:
  fex_lexicon();
  fex_lexicon(const std::wstring &);
  void clear_lexicon(); 
  void add_occurrence(const std::wstring &);
  void save_lexicon(const std::wstring &, double) const;
  unsigned int get_code(const std::wstring &) const;
  unsigned int get_freq(const std::wstring &) const;
  bool contains_code(unsigned int) const; 
  bool is_empty() const; 
};

#endif