001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.bcel.classfile; 019 020import java.io.DataInput; 021import java.io.DataOutputStream; 022import java.io.IOException; 023 024import org.apache.bcel.Const; 025 026/** 027 * Represents the default value of a annotation for a method info 028 * 029 * @version $Id: AnnotationDefault 1 2005-02-13 03:15:08Z dbrosius $ 030 * @since 6.0 031 */ 032public class AnnotationDefault extends Attribute { 033 034 private ElementValue default_value; 035 036 /** 037 * @param name_index Index pointing to the name <em>Code</em> 038 * @param length Content length in bytes 039 * @param input Input stream 040 * @param constant_pool Array of constants 041 */ 042 AnnotationDefault(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException { 043 this(name_index, length, (ElementValue) null, constant_pool); 044 default_value = ElementValue.readElementValue(input, constant_pool); 045 } 046 047 /** 048 * @param name_index Index pointing to the name <em>Code</em> 049 * @param length Content length in bytes 050 * @param defaultValue the annotation's default value 051 * @param constant_pool Array of constants 052 */ 053 public AnnotationDefault(final int name_index, final int length, final ElementValue defaultValue, final ConstantPool constant_pool) { 054 super(Const.ATTR_ANNOTATION_DEFAULT, name_index, length, constant_pool); 055 this.default_value = defaultValue; 056 } 057 058 /** 059 * Called by objects that are traversing the nodes of the tree implicitely 060 * defined by the contents of a Java class. I.e., the hierarchy of methods, 061 * 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 /** 071 * @param defaultValue the default value of this methodinfo's annotation 072 */ 073 public final void setDefaultValue(final ElementValue defaultValue) { 074 default_value = defaultValue; 075 } 076 077 /** 078 * @return the default value 079 */ 080 public final ElementValue getDefaultValue() { 081 return default_value; 082 } 083 084 @Override 085 public Attribute copy(final ConstantPool _constant_pool) { 086 return (Attribute) clone(); 087 } 088 089 @Override 090 public final void dump(final DataOutputStream dos) throws IOException { 091 super.dump(dos); 092 default_value.dump(dos); 093 } 094}