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Java > Open Source Codes > com > sun > org > apache > bcel > internal > verifier > structurals > ExceptionHandler


1 package com.sun.org.apache.bcel.internal.verifier.structurals;
2
3 /* ====================================================================
4  * The Apache Software License, Version 1.1
5  *
6  * Copyright (c) 2001 The Apache Software Foundation. All rights
7  * reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed by the
24  * Apache Software Foundation (http://www.apache.org/)."
25  * Alternately, this acknowledgment may appear in the software itself,
26  * if and wherever such third-party acknowledgments normally appear.
27  *
28  * 4. The names "Apache" and "Apache Software Foundation" and
29  * "Apache BCEL" must not be used to endorse or promote products
30  * derived from this software without prior written permission. For
31  * written permission, please contact apache@apache.org.
32  *
33  * 5. Products derived from this software may not be called "Apache",
34  * "Apache BCEL", nor may "Apache" appear in their name, without
35  * prior written permission of the Apache Software Foundation.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the Apache Software Foundation. For more
53  * information on the Apache Software Foundation, please see
54  * <http://www.apache.org/>.
55  */
56
57 import com.sun.org.apache.bcel.internal.generic.*;
58
59 /**
60  * This class represents an exception handler; that is, an ObjectType
61  * representing a subclass of java.lang.Throwable and the instruction
62  * the handler starts off (represented by an InstructionContext).
63  *
64  * @version $Id: ExceptionHandler.java,v 1.1.1.1 2001/10/29 20:00:38 jvanzyl Exp $
65  * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
66  */
67 public class ExceptionHandler{
68     /** The type of the exception to catch. NULL means ANY. */
69     private ObjectType catchtype;
70     
71     /** The InstructionHandle where the handling begins. */
72     private InstructionHandle handlerpc;
73
74     /** Leave instance creation to JustIce. */
75     ExceptionHandler(ObjectType catch_type, InstructionHandle handler_pc){
76         catchtype = catch_type;
77         handlerpc = handler_pc;
78     }
79
80     /**
81      * Returns the type of the exception that's handled. <B>'null' means 'ANY'.</B>
82      */
83     public ObjectType getExceptionType(){
84         return catchtype;
85     }
86
87     /**
88      * Returns the InstructionHandle where the handler starts off.
89      */
90     public InstructionHandle getHandlerStart(){
91         return handlerpc;
92     }
93 }
94
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