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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 Lesser 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 //    Lesser General Public License for more details.
00017 //
00018 //    You should have received a copy of the GNU Lesser 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 
00036 #include "tokens.h"
00037 
00041 
00042 class condition {
00043  private:
00045   bool neg;
00047   int pos;
00049   bool starpos;
00051   list<string> terms;
00053   list <string> barrier;
00054 
00055  public:
00057   condition();
00058 
00060   void clear();
00062   void set_neg(bool);
00064   void set_pos(int,bool);
00066   void set_terms(const list<string>&);
00068   void set_barrier(const list<string>&);
00070   bool is_neg() const;
00072   int get_pos() const;
00074   bool has_star() const;
00076   list<string> get_terms() const;
00078   bool has_barrier() const;
00080   list<string> get_barrier() const;
00081 };
00082 
00083 
00087 
00088 class ruleCG : public list<condition> {
00089  protected:
00091   double weight;
00093   string head;
00094 
00095  public:
00097   ruleCG();
00098 
00100   void set_head(const string &);
00102   void set_weight(double);
00104   string get_head() const;
00106   double get_weight() const;
00107 };
00108 
00113 
00114 class constraint_grammar : public multimap<string,ruleCG> {
00115 
00116  public:
00118   constraint_grammar(const string &);
00119 
00121   void get_rules_head(const string &, list<ruleCG> &) const;
00122 };
00123 
00124 #endif
00125 
00126 
00127 
00128 
00129 

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