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ObservableExtractor.java

package edu.ksu.cis.bandera.birc;

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Bandera, a Java(TM) analysis and transformation toolkit           *
 * Copyright (C) 1998, 1999   James Corbett (corbett@hawaii.edu)     *
 * All rights reserved.                                              *
 *                                                                   *
 * This work was done as a project in the SAnToS Laboratory,         *
 * Department of Computing and Information Sciences, Kansas State    *
 * University, USA (http://www.cis.ksu.edu/santos).                  *
 * It is understood that any modification not identified as such is  *
 * not covered by the preceding statement.                           *
 *                                                                   *
 * This work is free software; you can redistribute it and/or        *
 * modify it under the terms of the GNU Library General Public       *
 * License as published by the Free Software Foundation; either      *
 * version 2 of the License, or (at your option) any later version.  *
 *                                                                   *
 * This work is distributed in the hope that it will be useful,      *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of    *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU *
 * Library General Public License for more details.                  *
 *                                                                   *
 * You should have received a copy of the GNU Library General Public *
 * License along with this toolkit; if not, write to the             *
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,      *
 * Boston, MA  02111-1307, USA.                                      *
 *                                                                   *
 * Java is a trademark of Sun Microsystems, Inc.                     *
 *                                                                   *
 * To submit a bug report, send a comment, or get the latest news on *
 * this project and other SAnToS projects, please visit the web-site *
 *                http://www.cis.ksu.edu/santos                      *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
import java.io.*;
import java.util.*;

import edu.ksu.cis.bandera.jext.*;

import ca.mcgill.sable.util.*;
import ca.mcgill.sable.soot.*;
import ca.mcgill.sable.soot.jimple.*;

public class ObservableExtractor extends AbstractBanderaValueSwitch 
{
    Hashtable observableSet;

    public ObservableExtractor(Hashtable observableSet) {
    this.observableSet = observableSet;
    }
    public void caseAddExpr(AddExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseArrayRef(ArrayRef expr) {
    expr.getBase().apply(this);
    expr.getIndex().apply(this);
    }
    public void caseCastExpr(CastExpr expr) {
    expr.getOp().apply(this);
    }
    public void caseChooseExpr(ChooseExpr expr) {
    }
    public void caseComplementExpr(ComplementExpr expr) {
    expr.getOp().apply(this);
    }
    public void caseDivExpr(DivExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseEqExpr(EqExpr expr)
    {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseGeExpr(GeExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseGtExpr(GtExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseInExpr(InExpr expr) {
    expr.getOp1().apply(this);
    }
    public void caseInstanceFieldRef(InstanceFieldRef expr) {
    expr.getBase().apply(this);
    SootField field = expr.getField();
    observableSet.put(field,field);
    }
    public void caseInstanceOfExpr(InstanceOfExpr expr) {
    expr.getOp().apply(this);
    }
    public void caseIntConstant(IntConstant expr) {
    }
    public void caseLeExpr(LeExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseLengthExpr(LengthExpr expr) {
    expr.getOp().apply(this);
    }
    public void caseLocalExpr(LocalExpr expr) { 
    SootMethod method = expr.getMethod();
    Local local = expr.getLocal();
    String key = ExprExtractor.localKey(method,local);
    observableSet.put(key,key);
    }
    public void caseLocationTestExpr(LocationTestExpr expr) {
    Vector stmts = expr.getStmts();
    for (int i = 0; i < stmts.size(); i++) 
        observableSet.put(stmts.elementAt(i),stmts);
    }
    public void caseLogicalAndExpr(LogicalAndExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseLogicalOrExpr(LogicalOrExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseLtExpr(LtExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseMulExpr(MulExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseNeExpr(NeExpr expr)
    {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseNegExpr(NegExpr expr) {
    expr.getOp().apply(this);
    }
    public void caseNewArrayExpr(NewArrayExpr expr) {
    }
    public void caseNewExpr(NewExpr expr) {
    }
    public void caseNullConstant(NullConstant expr) {
    }
    public void caseRemExpr(RemExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void caseStaticFieldRef(StaticFieldRef expr) {
    SootField field = expr.getField();
    observableSet.put(field,field);
    }
    public void caseStaticInvokeExpr(StaticInvokeExpr expr) {
    throw new RuntimeException("Unhandled static method call: " + expr);
    }
    public void caseStringConstant(StringConstant expr) {
    }
    public void caseSubExpr(SubExpr expr) {
    expr.getOp1().apply(this);
    expr.getOp2().apply(this);
    }
    public void defaultCase(Object o) {
    throw new RuntimeException("Unhandled expression type: " + o);
    }
}

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