/* Soot - a J*va Optimization Framework
* Copyright (C) 1997-1999 Raja Vallee-Rai
*
* 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.jbco.util;
import java.util.*;
import soot.Body;
import soot.Trap;
import soot.Unit;
import soot.toolkits.graph.TrapUnitGraph;
/**
* @author Michael Batchelder
*
* Created on 15-Jun-2006
*/
public class SimpleExceptionalGraph extends TrapUnitGraph {
/**
* @param body
*/
public SimpleExceptionalGraph(Body body) {
super(body);
int size = unitChain.size();
unitToSuccs = new HashMap(size * 2 + 1, 0.7f);
unitToPreds = new HashMap(size * 2 + 1, 0.7f);
buildUnexceptionalEdges(unitToSuccs, unitToPreds);
buildSimpleExceptionalEdges(unitToSuccs, unitToPreds);
makeMappedListsUnmodifiable(unitToSuccs);
makeMappedListsUnmodifiable(unitToPreds);
buildHeadsAndTails();
}
protected void buildSimpleExceptionalEdges(Map unitToSuccs, Map unitToPreds) {
for (Iterator trapIt = body.getTraps().iterator();
trapIt.hasNext(); ) {
Trap trap = (Trap) trapIt.next();
Unit handler = trap.getHandlerUnit();
for (Iterator predIt = ((List)unitToPreds.get(trap.getBeginUnit())).iterator();
predIt.hasNext();) {
Unit pred = (Unit)predIt.next();
addEdge(unitToSuccs, unitToPreds, pred, handler);
}
}
}
}