129 lines
4.3 KiB
Java
129 lines
4.3 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.cast.ipa.callgraph;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.classLoader.IField;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.propagation.ConcreteTypeKey;
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import com.ibm.wala.ipa.callgraph.propagation.ConstantKey;
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import com.ibm.wala.ipa.callgraph.propagation.FilteredPointerKey;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceFieldKey;
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import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
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import com.ibm.wala.ipa.callgraph.propagation.PointerKey;
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import com.ibm.wala.ipa.callgraph.propagation.PointerKeyFactory;
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import com.ibm.wala.util.collections.NonNullSingletonIterator;
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import com.ibm.wala.util.strings.Atom;
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public class DelegatingAstPointerKeys implements AstPointerKeyFactory {
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private final PointerKeyFactory base;
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public DelegatingAstPointerKeys(PointerKeyFactory base) {
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this.base = base;
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}
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@Override
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public PointerKey getPointerKeyForLocal(CGNode node, int valueNumber) {
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return base.getPointerKeyForLocal(node, valueNumber);
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}
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@Override
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public FilteredPointerKey getFilteredPointerKeyForLocal(CGNode node, int valueNumber, FilteredPointerKey.TypeFilter filter) {
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return base.getFilteredPointerKeyForLocal(node, valueNumber, filter);
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}
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@Override
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public PointerKey getPointerKeyForReturnValue(CGNode node) {
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return base.getPointerKeyForReturnValue(node);
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}
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@Override
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public PointerKey getPointerKeyForExceptionalReturnValue(CGNode node) {
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return base.getPointerKeyForExceptionalReturnValue(node);
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}
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@Override
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public PointerKey getPointerKeyForStaticField(IField f) {
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return base.getPointerKeyForStaticField(f);
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}
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@Override
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public PointerKey getPointerKeyForObjectCatalog(InstanceKey I) {
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return new ObjectPropertyCatalogKey(I);
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}
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@Override
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public PointerKey getPointerKeyForInstanceField(InstanceKey I, IField f) {
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return base.getPointerKeyForInstanceField(I, f);
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}
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@Override
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public PointerKey getPointerKeyForArrayContents(InstanceKey I) {
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return base.getPointerKeyForArrayContents(I);
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}
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@Override
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public Iterator<PointerKey> getPointerKeysForReflectedFieldWrite(InstanceKey I, InstanceKey F) {
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List<PointerKey> result = new LinkedList<>();
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if (F instanceof ConstantKey) {
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PointerKey ifk = getInstanceFieldPointerKeyForConstant(I, (ConstantKey<?>) F);
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if (ifk != null) {
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result.add(ifk);
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}
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}
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result.add(ReflectedFieldPointerKey.mapped(new ConcreteTypeKey(getFieldNameType(F)), I));
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return result.iterator();
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}
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/**
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* get type for F appropriate for use in a field name.
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*
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* @param F
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* @return
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*/
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protected IClass getFieldNameType(InstanceKey F) {
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return F.getConcreteType();
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}
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/**
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* if F is a supported constant representing a field, return the corresponding {@link InstanceFieldKey} for I. Otherwise, return <code>null</code>.
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* @param F
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* @return
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*/
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protected PointerKey getInstanceFieldPointerKeyForConstant(InstanceKey I, ConstantKey<?> F) {
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Object v = F.getValue();
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// FIXME: current only constant string are handled
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if (v instanceof String) {
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IField f = I.getConcreteType().getField(Atom.findOrCreateUnicodeAtom((String) v));
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return getPointerKeyForInstanceField(I, f);
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}
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return null;
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}
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@Override
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public Iterator<PointerKey> getPointerKeysForReflectedFieldRead(InstanceKey I, InstanceKey F) {
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if (F instanceof ConstantKey) {
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PointerKey ifk = getInstanceFieldPointerKeyForConstant(I, (ConstantKey<?>) F);
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if (ifk != null) {
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return new NonNullSingletonIterator<>(ifk);
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}
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}
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return new NonNullSingletonIterator<>(ReflectedFieldPointerKey.mapped(new ConcreteTypeKey(getFieldNameType(F)), I));
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}
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}
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