118 lines
3.1 KiB
Java
118 lines
3.1 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.cfg.ControlFlowGraph;
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import com.ibm.wala.classLoader.IClass;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.ipa.callgraph.propagation.SSAContextInterpreter;
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import com.ibm.wala.ipa.callgraph.propagation.rta.DelegatingRTAContextInterpreter;
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import com.ibm.wala.ssa.DefUse;
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import com.ibm.wala.ssa.IR;
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import com.ibm.wala.ssa.IRView;
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import com.ibm.wala.ssa.ISSABasicBlock;
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import com.ibm.wala.ssa.SSAInstruction;
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/**
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* An {@link SSAContextInterpreter} that first checks with A, then defaults to B.
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*/
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public class DelegatingSSAContextInterpreter extends DelegatingRTAContextInterpreter implements SSAContextInterpreter {
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private final SSAContextInterpreter A;
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private final SSAContextInterpreter B;
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/**
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* neither A nor B should be null.
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*/
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public DelegatingSSAContextInterpreter(SSAContextInterpreter A, SSAContextInterpreter B) {
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super(A, B);
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this.A = A;
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this.B = B;
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if (A == null) {
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throw new IllegalArgumentException("A cannot be null");
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}
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if (B == null) {
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throw new IllegalArgumentException("B cannot be null");
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}
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}
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@Override
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public IR getIR(CGNode node) {
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if (A != null) {
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if (A.understands(node)) {
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return A.getIR(node);
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}
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}
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assert B.understands(node);
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return B.getIR(node);
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}
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@Override
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public IRView getIRView(CGNode node) {
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if (A != null) {
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if (A.understands(node)) {
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return A.getIRView(node);
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}
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}
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assert B.understands(node);
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return B.getIRView(node);
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}
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@Override
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public int getNumberOfStatements(CGNode node) {
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if (A != null) {
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if (A.understands(node)) {
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return A.getNumberOfStatements(node);
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}
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}
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assert B.understands(node);
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return B.getNumberOfStatements(node);
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}
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@Override
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public boolean understands(CGNode node) {
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return A.understands(node) || B.understands(node);
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}
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@Override
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public boolean recordFactoryType(CGNode node, IClass klass) {
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boolean result = false;
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if (A != null) {
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result |= A.recordFactoryType(node, klass);
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}
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result |= B.recordFactoryType(node, klass);
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return result;
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}
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@Override
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public ControlFlowGraph<SSAInstruction, ISSABasicBlock> getCFG(CGNode node) {
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if (A != null) {
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if (A.understands(node)) {
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return A.getCFG(node);
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}
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}
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assert B.understands(node);
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return B.getCFG(node);
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}
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@Override
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public DefUse getDU(CGNode node) {
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if (A != null) {
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if (A.understands(node)) {
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return A.getDU(node);
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}
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}
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assert B.understands(node);
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return B.getDU(node);
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}
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}
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