/************************************************************************
* Strathclyde Planning Group,
* Department of Computer and Information Sciences,
* University of Strathclyde, Glasgow, UK
* http://planning.cis.strath.ac.uk/
*
* Copyright 2007, Keith Halsey
* Copyright 2008, Andrew Coles and Amanda Smith
*
* (Questions/bug reports now to be sent to Andrew Coles)
*
* This file is part of JavaFF.
*
* JavaFF 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 2 of the License, or
* (at your option) any later version.
*
* JavaFF 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 JavaFF. If not, see <http://www.gnu.org/licenses/>.
*
************************************************************************/
package javaff.data.strips;
import javaff.data.Literal;
import javaff.data.PDDLPrinter;
import javaff.data.CompoundLiteral;
import javaff.data.GroundEffect;
import javaff.data.UngroundEffect;
import javaff.data.UngroundCondition;
import javaff.planning.State;
import javaff.planning.STRIPSState;
import java.util.Map;
import java.util.HashSet;
import java.util.Set;
import java.io.PrintStream;
public class NOT implements CompoundLiteral, GroundEffect, UngroundEffect
{
Literal literal;
public NOT(Literal l)
{
literal = l;
}
public void apply(State s)
{
STRIPSState ss = (STRIPSState) s;
ss.removeProposition((Proposition) literal);
}
public void applyAdds(State s)
{
}
public void applyDels(State s)
{
apply(s);
}
public boolean effects(PredicateSymbol ps)
{
UngroundEffect ue = (UngroundEffect) literal;
return ue.effects(ps);
}
public UngroundCondition effectsAdd(UngroundCondition cond)
{
return cond;
}
public GroundEffect groundEffect(Map varMap)
{
Predicate p = (Predicate) literal;
return new NOT((Proposition) p.groundEffect(varMap));
}
public Set getAddPropositions()
{
return new HashSet();
}
public Set getDeletePropositions()
{
Set rSet = new HashSet();
rSet.add(literal);
return rSet;
}
public Set getOperators()
{
return new HashSet();
}
public boolean equals(Object obj)
{
if (obj instanceof NOT)
{
NOT n = (NOT) obj;
return (literal.equals(n.literal));
}
else return false;
}
public GroundEffect staticifyEffect(Map fValues)
{
return this;
}
public int hashCode()
{
return literal.hashCode()^2;
}
public String toString()
{
return "not ("+literal.toString()+")";
}
public String toStringTyped()
{
return "not ("+literal.toStringTyped()+")";
}
public void PDDLPrint(java.io.PrintStream p, int indent)
{
p.print("(not ");
PDDLPrinter.printToString(literal, p, false, true, indent);
p.print(")");
}
}