LSentence.java

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/*
 * (c) copyright 2008, Technische Universitaet Graz and Technische Universitaet Wien
 *
 * This file is part of jdiagengine.
 *
 * jdiagengine 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.
 *
 * jdiagengine 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 jdiagengine. If not, see <http://www.gnu.org/licenses/>.
 *
 * Authors: Joerg Weber, Franz Wotawa
 * Contact: jweber@ist.tugraz.at (preferred), or fwotawa@ist.tugraz.at
 *
 */


package theoremprover;

import java.lang.*;    // Java language classes 
import java.util.*;
import theoremprover.*;


public class LSentence extends LObject
{
    // Instance variables

    public ArrayList rules;

    // Instance creation and initialization

    public LSentence()
    {
        rules = new ArrayList();
    }

    public LSentence(ArrayList v)
        {
        rules = v;
    }

    public void addRules(ArrayList newRules) {
        this.rules.addAll(newRules);
    }

    public void addRules(LSentence new_sentence) {
        this.rules.addAll(new_sentence.rules);
    }

    // Accessing methods

    public String toString()
    {
        StringBuffer str = new StringBuffer();
        Iterator e = rules.iterator();
        while (e.hasNext()) {
            str.append((e.next()).toString());
            str.append("\n\r");
        }
        return str.toString();
    }
  
  public PropositionalTheoremProver asPropositionalSentence() 
  { 
    PropositionalTheoremProver tp = new PropositionalTheoremProver();
    Hashtable pd = new Hashtable();

    Iterator e = rules.iterator();
    while (e.hasNext()) {
      ((theoremprover.LObject)(e.next())).asPropositionalSentence(tp,pd);
    }
    return tp;
  }


  public ABTheoremProver asABPropositionalSentence(ABTheoremProver tp) 
  { 
    Hashtable pd = new Hashtable();

    Iterator e = rules.iterator();
    while (e.hasNext()) {
      if (((theoremprover.LObject)(e.next())).asABPropositionalSentence(tp,pd) == null) {
        return null;
      }
    }
    return tp;
  }


    // Returns a list of predicates of the form str(X)
    public ArrayList allPredicates(String str)
    {
        return allPredicates(str,1);
    }

    // Returns a list of predicates of the form str(X1,..,Xi)
    public ArrayList allPredicates(String str, int i)
    {
        ArrayList v = new ArrayList();
        Iterator e = rules.iterator();
        while (e.hasNext()) {
            v = ((theoremprover.LObject)(e.next())).allPredicates(str,i,v);
        }
        return v;
    }

}