/*******************************************************************************
* Copyright (c) 2002 - 2006 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.analysis.reflection.CloneInterpreter;
import com.ibm.wala.classLoader.CallSiteReference;
import com.ibm.wala.classLoader.IMethod;
import com.ibm.wala.ipa.callgraph.CGNode;
import com.ibm.wala.ipa.callgraph.Context;
import com.ibm.wala.ipa.callgraph.ContextSelector;
import com.ibm.wala.ipa.cha.IClassHierarchy;
import com.ibm.wala.util.intset.EmptyIntSet;
import com.ibm.wala.util.intset.IntSet;
/**
* This context selector selects a context based on the concrete type of
* the receiver to a call of java.lang.Object.clone
*/
public class CloneContextSelector implements ContextSelector {
private final ReceiverTypeContextSelector selector;
private final IClassHierarchy cha;
public CloneContextSelector(IClassHierarchy cha) {
this.selector = new ReceiverTypeContextSelector();
this.cha = cha;
}
@Override
public Context getCalleeTarget(CGNode caller, CallSiteReference site, IMethod callee, InstanceKey[] receiver) {
if (receiver == null) {
return null;
}
if (callee.getReference().equals(CloneInterpreter.CLONE)) {
return selector.getCalleeTarget(caller,site,callee,receiver);
} else {
return null;
}
}
@Override
public IntSet getRelevantParameters(CGNode caller, CallSiteReference site) {
IMethod declaredTarget = cha.resolveMethod(site.getDeclaredTarget());
if (declaredTarget != null && declaredTarget.getReference().equals(CloneInterpreter.CLONE)) {
return selector.getRelevantParameters(caller, site);
} else {
return EmptyIntSet.instance;
}
}
}