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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License. 
16   *
17   */ 
18  package org.apache.bcel.verifier.structurals;
19  
20  
21  import org.apache.bcel.generic.InstructionHandle;
22  import org.apache.bcel.generic.ObjectType;
23  
24  /**
25   * This class represents an exception handler; that is, an ObjectType
26   * representing a subclass of java.lang.Throwable and the instruction
27   * the handler starts off (represented by an InstructionContext).
28   * 
29   * @version $Id: ExceptionHandler.html 898356 2014-02-18 05:44:40Z ggregory $
30   * @author Enver Haase
31   */
32  public class ExceptionHandler{
33  	/** The type of the exception to catch. NULL means ANY. */
34  	private ObjectType catchtype;
35  	
36  	/** The InstructionHandle where the handling begins. */
37  	private InstructionHandle handlerpc;
38  
39  	/** Leave instance creation to JustIce. */
40  	ExceptionHandler(ObjectType catch_type, InstructionHandle handler_pc){
41  		catchtype = catch_type;
42  		handlerpc = handler_pc;
43  	}
44  
45  	/**
46  	 * Returns the type of the exception that's handled. <B>'null' means 'ANY'.</B>
47  	 */
48  	public ObjectType getExceptionType(){
49  		return catchtype;
50  	}
51  
52  	/**
53  	 * Returns the InstructionHandle where the handler starts off.
54  	 */
55  	public InstructionHandle getHandlerStart(){
56  		return handlerpc;
57  	}
58  }