constraint_grammar.h

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00001 
00002 //
00003 //    FreeLing - Open Source Language Analyzers
00004 //
00005 //    Copyright (C) 2004   TALP Research Center
00006 //                         Universitat Politecnica de Catalunya
00007 //
00008 //    This library is free software; you can redistribute it and/or
00009 //    modify it under the terms of the GNU General Public
00010 //    License as published by the Free Software Foundation; either
00011 //    version 2.1 of the License, or (at your option) any later version.
00012 //
00013 //    This library is distributed in the hope that it will be useful,
00014 //    but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016 //    General Public License for more details.
00017 //
00018 //    You should have received a copy of the GNU General Public
00019 //    License along with this library; if not, write to the Free Software
00020 //    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
00021 //
00022 //    contact: Lluis Padro (padro@lsi.upc.es)
00023 //             TALP Research Center
00024 //             despatx C6.212 - Campus Nord UPC
00025 //             08034 Barcelona.  SPAIN
00026 //
00028 
00029 #ifndef _CONSTR_GRAMMAR
00030 #define _CONSTR_GRAMMAR
00031 
00032 #include <string>
00033 #include <list>
00034 #include <map>
00035 #include <set>
00036 
00037 #include "freeling/tokens.h"
00038 
00042 
00043 class condition {
00044  private:
00046   bool neg;
00048   int pos;
00050   bool starpos;
00052   std::list<std::string> terms;
00054   std::list <std::string> barrier;
00055 
00056  public:
00058   condition();
00059 
00061   void clear();
00063   void set_neg(bool);
00065   void set_pos(int,bool);
00067   void set_terms(const std::list<std::string>&);
00069   void set_barrier(const std::list<std::string>&);
00071   bool is_neg() const;
00073   int get_pos() const;
00075   bool has_star() const;
00077   std::list<std::string> get_terms() const;
00079   bool has_barrier() const;
00081   std::list<std::string> get_barrier() const;
00082 };
00083 
00084 
00088 
00089 class ruleCG : public std::list<condition> {
00090  protected:
00092   double weight;
00094   std::string head;
00095 
00096  public:
00098   ruleCG();
00099 
00101   void set_head(const std::string &);
00103   void set_weight(double);
00105   std::string get_head() const;
00107   double get_weight() const;
00108 };
00109 
00113 
00114 class setCG : public std::set<std::string> {
00115  public:
00116   int type;
00117 };
00118 
00123 
00124 class constraint_grammar : public std::multimap<std::string,ruleCG> {
00125 
00126  public:
00128   bool senses_used;
00129 
00131   std::map<std::string,setCG> sets;
00132 
00134   constraint_grammar(const std::string &);
00135 
00137   void get_rules_head(const std::string &, std::list<ruleCG> &) const;
00138 };
00139 
00140 #endif
00141 
00142 
00143 
00144 
00145 
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