/* Soot - a J*va Optimization Framework
* Copyright (C) 2003 Jerome Miecznikowski
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
package soot.dava.toolkits.base.misc;
import soot.*;
import java.util.*;
import soot.dava.*;
import soot.jimple.*;
import soot.dava.internal.javaRep.*;
public class ThrowNullConverter
{
public ThrowNullConverter( Singletons.Global g ) {}
public static ThrowNullConverter v() { return G.v().soot_dava_toolkits_base_misc_ThrowNullConverter(); }
private final RefType npeRef = RefType.v( Scene.v().loadClassAndSupport( "java.lang.NullPointerException"));
public void convert( DavaBody body)
{
Iterator it = body.getUnits().iterator();
while (it.hasNext()) {
Unit u = (Unit) it.next();
if (u instanceof ThrowStmt) {
ValueBox opBox = ((ThrowStmt) u).getOpBox();
Value op = opBox.getValue();
if (op.getType() instanceof NullType)
opBox.setValue( new DNewInvokeExpr( npeRef, null, new ArrayList()));
}
}
}
}