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