JDK14/Java14源码在线阅读

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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package com.sun.org.apache.bcel.internal.classfile;

import java.io.DataInput;
import java.io.DataOutputStream;
import java.io.IOException;

import com.sun.org.apache.bcel.internal.Const;

/**
 * Represents the default value of a annotation for a method info
 *
 * @version $Id: AnnotationDefault 1 2005-02-13 03:15:08Z dbrosius $
 * @since 6.0
 */
public class AnnotationDefault extends Attribute {

    private ElementValue default_value;

    /**
     * @param name_index    Index pointing to the name <em>Code</em>
     * @param length        Content length in bytes
     * @param input         Input stream
     * @param constant_pool Array of constants
     */
    AnnotationDefault(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) throws IOException {
        this(name_index, length, (ElementValue) null, constant_pool);
        default_value = ElementValue.readElementValue(input, constant_pool);
    }

    /**
     * @param name_index    Index pointing to the name <em>Code</em>
     * @param length        Content length in bytes
     * @param defaultValue  the annotation's default value
     * @param constant_pool Array of constants
     */
    public AnnotationDefault(final int name_index, final int length, final ElementValue defaultValue, final ConstantPool constant_pool) {
        super(Const.ATTR_ANNOTATION_DEFAULT, name_index, length, constant_pool);
        this.default_value = defaultValue;
    }

    /**
     * Called by objects that are traversing the nodes of the tree implicitely
     * defined by the contents of a Java class. I.e., the hierarchy of methods,
     * fields, attributes, etc. spawns a tree of objects.
     *
     * @param v Visitor object
     */
    @Override
    public void accept(final Visitor v) {
        v.visitAnnotationDefault(this);
    }

    /**
     * @param defaultValue the default value of this methodinfo's annotation
     */
    public final void setDefaultValue(final ElementValue defaultValue) {
        default_value = defaultValue;
    }

    /**
     * @return the default value
     */

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