constraint_grammar.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 _CONSTR_GRAMMAR
#define _CONSTR_GRAMMAR

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


class condition {
 private:
  bool neg;
  int pos;
  bool starpos;
  std::list<std::wstring> terms;
  std::list <std::wstring> barrier;

 public:
  condition();

  void clear();
  void set_neg(bool);
  void set_pos(int,bool);
  void set_terms(const std::list<std::wstring>&);
  void set_barrier(const std::list<std::wstring>&);
  bool is_neg() const;
  int get_pos() const;
  bool has_star() const;
  std::list<std::wstring> get_terms() const;
  bool has_barrier() const;
  std::list<std::wstring> get_barrier() const;
};



class ruleCG : public std::list<condition> {
 protected:
  double weight;
  std::wstring head;

 public:
  ruleCG();

  void set_head(const std::wstring &);
  void set_weight(double);
  std::wstring get_head() const;
  double get_weight() const;
};


class setCG : public std::set<std::wstring> {
 public:
  int type;
};




class constraint_grammar : public std::multimap<std::wstring,ruleCG> {
 public:
  bool senses_used;

  std::map<std::wstring,setCG> sets;

  constraint_grammar(const std::wstring &);

  void get_rules_head(const std::wstring &, std::list<ruleCG> &) const;
};


//----  TOKENS used to parse constraint_grammar files.

#define CATEGORY 1
#define FORM     2
#define LEMMA    3
#define COMMENT  4
#define ERROR    5
#define BARRIER  6
#define CPAR     7
#define FLOATNUM 8
#define NOT      9
#define OR       10
#define OPAR     11
#define OUTBOUNDS 12
#define POSITION 13
#define SEMICOLON 14
#define USER      15
#define SETS      16
#define CONSTRAINTS 17
#define IS          18
#define SETREF      19
#define SENSE       20

#endif