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Apache Commons Compress software defines an API for working with
compression and archive formats. These include: bzip2, gzip, pack200,
lzma, xz, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4,
Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.
/*
* 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.commons.compress.harmony.unpack200.bytecode;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* Enclosing method class file attribute.
*/
public class EnclosingMethodAttribute extends Attribute {
private static CPUTF8 attributeName;
public static void setAttributeName(final CPUTF8 cpUTF8Value) {
attributeName = cpUTF8Value;
}
private int classIndex;
private int methodIndex;
private final CPClass cpClass;
private final CPNameAndType method;
public EnclosingMethodAttribute(final CPClass cpClass, final CPNameAndType method) {
super(attributeName);
this.cpClass = cpClass;
this.method = method;
}
/*
* (non-Javadoc)
*
* @see org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#getLength()
*/
@Override
protected int getLength() {
return 4;
}
@Override
protected ClassFileEntry[] getNestedClassFileEntries() {
if (method != null) {
return new ClassFileEntry[] { attributeName, cpClass, method };
}
return new ClassFileEntry[] { attributeName, cpClass };
}
@Override
protected void resolve(final ClassConstantPool pool) {
super.resolve(pool);
cpClass.resolve(pool);
classIndex = pool.indexOf(cpClass);
if (method != null) {
method.resolve(pool);
methodIndex = pool.indexOf(method);
} else {
methodIndex = 0;
}
}
/*
* (non-Javadoc)
*
* @see org.apache.commons.compress.harmony.unpack200.bytecode.ClassFileEntry#toString()
*/
@Override
public String toString() {
return "EnclosingMethod";
}
/*
* (non-Javadoc)
*
* @see org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#writeBody(java.io.DataOutputStream)
*/
@Override
protected void writeBody(final DataOutputStream dos) throws IOException {
dos.writeShort(classIndex);
dos.writeShort(methodIndex);
}
}