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 * @since 6.0 030 */ 031public class AnnotationDefault extends Attribute { 032 033 private ElementValue default_value; 034 035 /** 036 * @param name_index Index pointing to the name <em>Code</em> 037 * @param length Content length in bytes 038 * @param input Input stream 039 * @param constant_pool Array of constants 040 */ 041 AnnotationDefault(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException { 042 this(name_index, length, (ElementValue) null, constant_pool); 043 default_value = ElementValue.readElementValue(input, constant_pool); 044 } 045 046 /** 047 * @param name_index Index pointing to the name <em>Code</em> 048 * @param length Content length in bytes 049 * @param defaultValue the annotation's default value 050 * @param constant_pool Array of constants 051 */ 052 public AnnotationDefault(final int name_index, final int length, final ElementValue defaultValue, final ConstantPool constant_pool) { 053 super(Const.ATTR_ANNOTATION_DEFAULT, name_index, length, constant_pool); 054 this.default_value = defaultValue; 055 } 056 057 /** 058 * Called by objects that are traversing the nodes of the tree implicitely 059 * defined by the contents of a Java class. I.e., the hierarchy of methods, 060 * fields, attributes, etc. spawns a tree of objects. 061 * 062 * @param v Visitor object 063 */ 064 @Override 065 public void accept(final Visitor v) { 066 v.visitAnnotationDefault(this); 067 } 068 069 /** 070 * @param defaultValue the default value of this methodinfo's annotation 071 */ 072 public final void setDefaultValue(final ElementValue defaultValue) { 073 default_value = defaultValue; 074 } 075 076 /** 077 * @return the default value 078 */ 079 public final ElementValue getDefaultValue() { 080 return default_value; 081 } 082 083 @Override 084 public Attribute copy(final ConstantPool _constant_pool) { 085 return (Attribute) clone(); 086 } 087 088 @Override 089 public final void dump(final DataOutputStream dos) throws IOException { 090 super.dump(dos); 091 default_value.dump(dos); 092 } 093}