54 lines
2.1 KiB
Java
54 lines
2.1 KiB
Java
/*******************************************************************************
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* Copyright (c) 2002 - 2006 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.ipa.callgraph.propagation.cfa;
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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.impl.Everywhere;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
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import com.ibm.wala.util.intset.IntSet;
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/**
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* This is a context selector that adds one level of calling context to a base context selector.
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*/
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public class OneLevelSiteContextSelector implements ContextSelector {
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private final ContextSelector baseSelector;
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/**
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* @param baseSelector a context selector which provides the context to analyze a method in, but without one level of calling
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* context.
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*/
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public OneLevelSiteContextSelector(ContextSelector baseSelector) {
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if (baseSelector == null) {
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throw new IllegalArgumentException("null baseSelector");
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}
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this.baseSelector = baseSelector;
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}
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public Context getCalleeTarget(CGNode caller, CallSiteReference site, IMethod callee, InstanceKey[] receiver) {
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Context baseContext = baseSelector.getCalleeTarget(caller, site, callee, receiver);
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if (baseContext.equals(Everywhere.EVERYWHERE)) {
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return new CallerSiteContext(caller, site);
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} else {
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return new CallerSiteContextPair(caller, site, baseContext);
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}
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}
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public IntSet getRelevantParameters(CGNode caller, CallSiteReference site) {
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return baseSelector.getRelevantParameters(caller, site);
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}
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}
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