org.apache.tomcat.util.bcel.classfile.InnerClasses Maven / Gradle / Ivy
/*
* 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
* limitations under the License.
*
*/
package org.apache.tomcat.util.bcel.classfile;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.apache.tomcat.util.bcel.Constants;
/**
* This class is derived from Attribute and denotes that this class
* is an Inner class of another.
* to the source file of this class.
* It is instantiated from the Attribute.readAttribute() method.
*
* @version $Id: InnerClasses.java 1057670 2011-01-11 14:52:05Z markt $
* @author M. Dahm
* @see Attribute
*/
public final class InnerClasses extends Attribute {
private static final long serialVersionUID = 54179484605570305L;
private InnerClass[] inner_classes;
private int number_of_classes;
/**
* @param name_index Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param inner_classes array of inner classes attributes
* @param constant_pool Array of constants
*/
public InnerClasses(int name_index, int length, InnerClass[] inner_classes,
ConstantPool constant_pool) {
super(Constants.ATTR_INNER_CLASSES, name_index, length, constant_pool);
setInnerClasses(inner_classes);
}
/**
* Construct object from file stream.
*
* @param name_index Index in constant pool to CONSTANT_Utf8
* @param length Content length in bytes
* @param file Input stream
* @param constant_pool Array of constants
* @throws IOException
*/
InnerClasses(int name_index, int length, DataInputStream file, ConstantPool constant_pool)
throws IOException {
this(name_index, length, (InnerClass[]) null, constant_pool);
number_of_classes = file.readUnsignedShort();
inner_classes = new InnerClass[number_of_classes];
for (int i = 0; i < number_of_classes; i++) {
inner_classes[i] = new InnerClass(file);
}
}
/**
* Dump source file attribute to file stream in binary format.
*
* @param file Output file stream
* @throws IOException
*/
@Override
public final void dump( DataOutputStream file ) throws IOException {
super.dump(file);
file.writeShort(number_of_classes);
for (int i = 0; i < number_of_classes; i++) {
inner_classes[i].dump(file);
}
}
/**
* @param inner_classes the array of inner classes
*/
public final void setInnerClasses( InnerClass[] inner_classes ) {
this.inner_classes = inner_classes;
number_of_classes = (inner_classes == null) ? 0 : inner_classes.length;
}
/**
* @return String representation.
*/
@Override
public final String toString() {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < number_of_classes; i++) {
buf.append(inner_classes[i].toString(constant_pool)).append("\n");
}
return buf.toString();
}
/**
* @return deep copy of this attribute
*/
@Override
public Attribute copy( ConstantPool _constant_pool ) {
InnerClasses c = (InnerClasses) clone();
c.inner_classes = new InnerClass[number_of_classes];
for (int i = 0; i < number_of_classes; i++) {
c.inner_classes[i] = inner_classes[i].copy();
}
c.constant_pool = _constant_pool;
return c;
}
}