/*******************************************************************************
* Copyright (c) 2007 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package com.ibm.wala.ipa.callgraph.propagation;
import com.ibm.wala.classLoader.IClass;
import com.ibm.wala.classLoader.NewSiteReference;
import com.ibm.wala.ipa.callgraph.CGNode;
/**
* Represents an array with length zero. Useful for precision since such arrays
* cannot have contents.
*/
public final class ZeroLengthArrayInNode extends AllocationSiteInNode {
public ZeroLengthArrayInNode(CGNode node, NewSiteReference allocation, IClass type) {
super(node, allocation, type);
}
@Override
public boolean equals(Object obj) {
// instanceof is OK because this class is final
if (obj instanceof ZeroLengthArrayInNode) {
AllocationSiteInNode other = (AllocationSiteInNode) obj;
return getNode().equals(other.getNode()) && getSite().equals(other.getSite());
} else {
return false;
}
}
@Override
public int hashCode() {
return getNode().hashCode() * 8647 + getSite().hashCode();
}
}