45 lines
1.6 KiB
Java
45 lines
1.6 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.analysis.exceptionanalysis;
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import com.ibm.wala.dataflow.graph.BitVectorSolver;
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import com.ibm.wala.dataflow.graph.IKilldallFramework;
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import com.ibm.wala.fixpoint.BitVectorVariable;
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import com.ibm.wala.ipa.callgraph.CGNode;
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import com.ibm.wala.util.intset.BitVector;
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public class InitializedBitVectorSolver extends BitVectorSolver<CGNode> {
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public InitializedBitVectorSolver(IKilldallFramework<CGNode, BitVectorVariable> problem) {
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super(problem);
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}
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@Override
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protected BitVectorVariable makeNodeVariable(CGNode n, boolean IN) {
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return newBV();
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}
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@Override
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protected BitVectorVariable makeEdgeVariable(CGNode src, CGNode dst) {
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return newBV();
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}
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private static BitVectorVariable newBV() {
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/*
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* If we do not initialize BitVectorVariable, with a BitVector, it contains
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* null, which may crash in combination with {@link BitVectorMinusVector}
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* used in {@link ExceptionTransferFunction}
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*/
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BitVectorVariable result = new BitVectorVariable();
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result.addAll(new BitVector());
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return result;
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}
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}
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