68 lines
2.3 KiB
Java
68 lines
2.3 KiB
Java
/*******************************************************************************
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* Copyright (c) 2007 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;
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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.util.intset.IntSet;
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import com.ibm.wala.util.intset.IntSetUtil;
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import com.ibm.wala.util.intset.MutableIntSet;
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public class CPAContextSelector implements ContextSelector {
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private final ContextSelector base;
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public CPAContextSelector(ContextSelector base) {
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this.base = base;
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}
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public static class CPAContext extends SelectiveCPAContext {
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public CPAContext(Context base, InstanceKey[] x) {
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super(base, x);
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}
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}
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@Override
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public Context getCalleeTarget(CGNode caller, CallSiteReference site, IMethod callee, InstanceKey[] actualParameters) {
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Context target = base.getCalleeTarget(caller, site, callee, actualParameters);
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if (actualParameters != null && actualParameters.length > 0) {
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return new CPAContext(target, actualParameters);
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} else {
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return target;
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}
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}
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private static boolean dispatchIndex(CallSiteReference ref, int i) {
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if (ref.isStatic()) {
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return ! ref.getDeclaredTarget().getParameterType(i).isPrimitiveType();
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} else {
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return i==0 || ! ref.getDeclaredTarget().getParameterType(i-1).isPrimitiveType();
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}
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}
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@Override
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public IntSet getRelevantParameters(CGNode caller, CallSiteReference site) {
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MutableIntSet s = IntSetUtil.make();
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for(int i = 0; i < caller.getIR().getCalls(site)[0].getNumberOfUses(); i++) {
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if (!caller.getMethod().getDeclaringClass().getClassLoader().getLanguage().methodsHaveDeclaredParameterTypes() || dispatchIndex(site, i)) {
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s.add(i);
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}
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}
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return s;
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}
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}
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