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.classfile; 19 20 import java.io.DataInput; 21 import java.io.DataOutputStream; 22 import java.io.IOException; 23 24 import org.apache.bcel.Const; 25 26 /** 27 * Represents the default value of a annotation for a method info 28 * 29 * @version $Id: AnnotationDefault 1 2005-02-13 03:15:08Z dbrosius $ 30 * @since 6.0 31 */ 32 public class AnnotationDefault extends Attribute { 33 34 private ElementValue default_value; 35 36 /** 37 * @param name_index Index pointing to the name <em>Code</em> 38 * @param length Content length in bytes 39 * @param input Input stream 40 * @param constant_pool Array of constants 41 */ AnnotationDefault(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool)42 AnnotationDefault(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException { 43 this(name_index, length, (ElementValue) null, constant_pool); 44 default_value = ElementValue.readElementValue(input, constant_pool); 45 } 46 47 /** 48 * @param name_index Index pointing to the name <em>Code</em> 49 * @param length Content length in bytes 50 * @param defaultValue the annotation's default value 51 * @param constant_pool Array of constants 52 */ AnnotationDefault(final int name_index, final int length, final ElementValue defaultValue, final ConstantPool constant_pool)53 public AnnotationDefault(final int name_index, final int length, final ElementValue defaultValue, final ConstantPool constant_pool) { 54 super(Const.ATTR_ANNOTATION_DEFAULT, name_index, length, constant_pool); 55 this.default_value = defaultValue; 56 } 57 58 /** 59 * Called by objects that are traversing the nodes of the tree implicitely 60 * defined by the contents of a Java class. I.e., the hierarchy of methods, 61 * fields, attributes, etc. spawns a tree of objects. 62 * 63 * @param v Visitor object 64 */ 65 @Override accept(final Visitor v)66 public void accept(final Visitor v) { 67 v.visitAnnotationDefault(this); 68 } 69 70 /** 71 * @param defaultValue the default value of this methodinfo's annotation 72 */ setDefaultValue(final ElementValue defaultValue)73 public final void setDefaultValue(final ElementValue defaultValue) { 74 default_value = defaultValue; 75 } 76 77 /** 78 * @return the default value 79 */ getDefaultValue()80 public final ElementValue getDefaultValue() { 81 return default_value; 82 } 83 84 @Override copy(final ConstantPool _constant_pool)85 public Attribute copy(final ConstantPool _constant_pool) { 86 return (Attribute) clone(); 87 } 88 89 @Override dump(final DataOutputStream dos)90 public final void dump(final DataOutputStream dos) throws IOException { 91 super.dump(dos); 92 default_value.dump(dos); 93 } 94 } 95