60 lines
2.1 KiB
Java
60 lines
2.1 KiB
Java
/*******************************************************************************
|
|
* 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
|
|
}
|