1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.dx.cf.attrib; 18 19 import com.android.dx.rop.type.TypeList; 20 import com.android.dx.util.MutabilityException; 21 22 /** 23 * Attribute class for standard {@code Exceptions} attributes. 24 */ 25 public final class AttExceptions extends BaseAttribute { 26 /** {@code non-null;} attribute name for attributes of this type */ 27 public static final String ATTRIBUTE_NAME = "Exceptions"; 28 29 /** {@code non-null;} list of exception classes */ 30 private final TypeList exceptions; 31 32 /** 33 * Constructs an instance. 34 * 35 * @param exceptions {@code non-null;} list of classes, presumed but not 36 * verified to be subclasses of {@code Throwable} 37 */ AttExceptions(TypeList exceptions)38 public AttExceptions(TypeList exceptions) { 39 super(ATTRIBUTE_NAME); 40 41 try { 42 if (exceptions.isMutable()) { 43 throw new MutabilityException("exceptions.isMutable()"); 44 } 45 } catch (NullPointerException ex) { 46 // Translate the exception. 47 throw new NullPointerException("exceptions == null"); 48 } 49 50 this.exceptions = exceptions; 51 } 52 53 /** {@inheritDoc} */ 54 @Override byteLength()55 public int byteLength() { 56 return 8 + exceptions.size() * 2; 57 } 58 59 /** 60 * Gets the list of classes associated with this instance. In 61 * general, these classes are not pre-verified to be subclasses of 62 * {@code Throwable}. 63 * 64 * @return {@code non-null;} the list of classes 65 */ getExceptions()66 public TypeList getExceptions() { 67 return exceptions; 68 } 69 } 70