/*
* ProcedureState.java - This file is part of the Jakstab project.
* Copyright 2007-2015 Johannes Kinder <jk@jakstab.org>
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, see <http://www.gnu.org/licenses/>.
*/
package org.jakstab.analysis.procedures;
import java.util.Set;
import org.jakstab.analysis.AbstractState;
import org.jakstab.analysis.LatticeElement;
import org.jakstab.cfa.Location;
import org.jakstab.rtl.expressions.RTLExpression;
import org.jakstab.rtl.expressions.RTLNumber;
import org.jakstab.util.FastSet;
import org.jakstab.util.Logger;
import org.jakstab.util.Tuple;
/**
* @author Johannes Kinder
*/
public class ProcedureState implements AbstractState {
@SuppressWarnings("unused")
private static final Logger logger = Logger.getLogger(ProcedureState.class);
private FastSet<Location> procedureEntries;
public ProcedureState(FastSet<Location> procedureEntries) {
this.procedureEntries = procedureEntries;
}
public Set<Location> getProcedureEntries() {
return procedureEntries;
}
@Override
public String getIdentifier() {
return Integer.toString(hashCode());
}
@Override
public Location getLocation() {
return null;
}
@Override
public AbstractState join(LatticeElement l) {
ProcedureState other = (ProcedureState)l;
return new ProcedureState(other.procedureEntries.union(this.procedureEntries));
}
@Override
public Set<Tuple<RTLNumber>> projectionFromConcretization(
RTLExpression... expressions) {
return null;
}
@Override
public boolean isBot() {
return procedureEntries.isEmpty();
}
@Override
public boolean isTop() {
return procedureEntries == null;
}
@Override
public boolean lessOrEqual(LatticeElement l) {
ProcedureState other = (ProcedureState)l;
return other.isTop() || other.procedureEntries.containsAll(this.procedureEntries);
}
@Override
public String toString() {
if (isTop()) return "[TOP]";
if (isBot()) return "[BOT]";
return procedureEntries.toString();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime
* result
+ ((procedureEntries == null) ? 0 : procedureEntries.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ProcedureState other = (ProcedureState) obj;
if (procedureEntries == null) {
if (other.procedureEntries != null)
return false;
} else if (!procedureEntries.equals(other.procedureEntries))
return false;
return true;
}
}