59 lines
2.3 KiB
Java
59 lines
2.3 KiB
Java
/*******************************************************************************
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* Copyright (c) 2008 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package com.ibm.wala.analysis.reflection;
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import com.ibm.wala.analysis.typeInference.PointType;
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import com.ibm.wala.classLoader.CallSiteReference;
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import com.ibm.wala.classLoader.IMethod;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.Context;
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import com.ibm.wala.ipa.callgraph.ContextSelector;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
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import com.ibm.wala.types.MethodReference;
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import com.ibm.wala.types.TypeReference;
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import com.ibm.wala.util.intset.EmptyIntSet;
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import com.ibm.wala.util.intset.IntSet;
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import com.ibm.wala.util.intset.IntSetUtil;
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/**
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* A {@link ContextSelector} to intercept calls to Object.getClass()
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*/
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class GetClassContextSelector implements ContextSelector {
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public final static MethodReference GET_CLASS = MethodReference.findOrCreate(TypeReference.JavaLangObject, "getClass",
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"()Ljava/lang/Class;");
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public GetClassContextSelector() {
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}
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/*
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* @see com.ibm.wala.ipa.callgraph.ContextSelector#getCalleeTarget(com.ibm.wala.ipa.callgraph.CGNode,
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* com.ibm.wala.classLoader.CallSiteReference, com.ibm.wala.classLoader.IMethod,
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* com.ibm.wala.ipa.callgraph.propagation.InstanceKey)
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*/
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public Context getCalleeTarget(CGNode caller, CallSiteReference site, IMethod callee, InstanceKey[] receiver) {
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if (callee.getReference().equals(GET_CLASS)) {
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return new JavaTypeContext(new PointType(receiver[0].getConcreteType()));
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}
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return null;
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}
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private static final IntSet thisParameter = IntSetUtil.make(new int[]{0});
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public IntSet getRelevantParameters(CGNode caller, CallSiteReference site) {
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if (site.isDispatch() || site.getDeclaredTarget().getNumberOfParameters() > 0) {
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return thisParameter;
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} else {
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return EmptyIntSet.instance;
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}
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}
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} |