- package com.sun.org.apache.bcel.internal.verifier.structurals;
-
- /* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Apache" and "Apache Software Foundation" and
- * "Apache BCEL" must not be used to endorse or promote products
- * derived from this software without prior written permission. For
- * written permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * "Apache BCEL", nor may "Apache" appear in their name, without
- * prior written permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-
- import com.sun.org.apache.bcel.internal.generic.*;
- import java.util.HashSet;
- import java.util.Hashtable;
-
- /**
- * This class allows easy access to ExceptionHandler objects.
- *
- * @version $Id: ExceptionHandlers.java,v 1.1.1.1 2001/10/29 20:00:38 jvanzyl Exp $
- * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
- */
- public class ExceptionHandlers{
- /**
- * The ExceptionHandler instances.
- * Key: InstructionHandle objects, Values: HashSet<ExceptionHandler> instances.
- */
- private Hashtable exceptionhandlers;
-
- /**
- * Constructor. Creates a new ExceptionHandlers instance.
- */
- public ExceptionHandlers(MethodGen mg){
- exceptionhandlers = new Hashtable();
- CodeExceptionGen[] cegs = mg.getExceptionHandlers();
- for (int i=0; i<cegs.length; i++){
- ExceptionHandler eh = new ExceptionHandler(cegs[i].getCatchType(), cegs[i].getHandlerPC());
- for (InstructionHandle ih=cegs[i].getStartPC(); ih != cegs[i].getEndPC().getNext(); ih=ih.getNext()){
- HashSet hs;
- hs = (HashSet) exceptionhandlers.get(ih);
- if (hs == null){
- hs = new HashSet();
- exceptionhandlers.put(ih, hs);
- }
- hs.add(eh);
- }
- }
- }
-
- /**
- * Returns all the ExceptionHandler instances representing exception
- * handlers that protect the instruction ih.
- */
- public ExceptionHandler[] getExceptionHandlers(InstructionHandle ih){
- HashSet hs = (HashSet) exceptionhandlers.get(ih);
- if (hs == null) return new ExceptionHandler[0];
- else{
- ExceptionHandler[] ret = new ExceptionHandler[hs.size()];
- return (ExceptionHandler[]) (hs.toArray(ret));
- }
- }
-
- }