001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * https://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020package org.apache.bcel.classfile; 021 022import java.io.DataInput; 023import java.io.DataOutputStream; 024import java.io.IOException; 025 026import org.apache.bcel.Const; 027 028/** 029 * Represents the default value of a annotation for a method info. 030 * 031 * @since 6.0 032 */ 033public class AnnotationDefault extends Attribute { 034 035 private ElementValue defaultValue; 036 037 /** 038 * @param nameIndex Index pointing to the name <em>Code</em> 039 * @param length Content length in bytes 040 * @param input Input stream 041 * @param constantPool Array of constants 042 */ 043 AnnotationDefault(final int nameIndex, final int length, final DataInput input, final ConstantPool constantPool) throws IOException { 044 this(nameIndex, length, (ElementValue) null, constantPool); 045 defaultValue = ElementValue.readElementValue(input, constantPool); 046 } 047 048 /** 049 * @param nameIndex Index pointing to the name <em>Code</em> 050 * @param length Content length in bytes 051 * @param defaultValue the annotation's default value 052 * @param constantPool Array of constants 053 */ 054 public AnnotationDefault(final int nameIndex, final int length, final ElementValue defaultValue, final ConstantPool constantPool) { 055 super(Const.ATTR_ANNOTATION_DEFAULT, nameIndex, length, constantPool); 056 this.defaultValue = defaultValue; 057 } 058 059 /** 060 * Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class. 061 * I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects. 062 * 063 * @param v Visitor object 064 */ 065 @Override 066 public void accept(final Visitor v) { 067 v.visitAnnotationDefault(this); 068 } 069 070 @Override 071 public Attribute copy(final ConstantPool constantPool) { 072 return (Attribute) clone(); 073 } 074 075 @Override 076 public final void dump(final DataOutputStream dos) throws IOException { 077 super.dump(dos); 078 defaultValue.dump(dos); 079 } 080 081 /** 082 * @return the default value 083 */ 084 public final ElementValue getDefaultValue() { 085 return defaultValue; 086 } 087 088 /** 089 * @param defaultValue the default value of this methodinfo's annotation 090 */ 091 public final void setDefaultValue(final ElementValue defaultValue) { 092 this.defaultValue = defaultValue; 093 } 094}