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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;
/**
* Abstract superclass for constant pool constant entries such as numbers or Strings
*/
public abstract class CPConstant extends ConstantPoolEntry {
private final Object value;
/**
* Create a new CPConstant
*
* @param tag TODO
* @param value TODO
* @param globalIndex index in CpBands
* @throws NullPointerException if value is null
*/
public CPConstant(final byte tag, final Object value, final int globalIndex) {
super(tag, globalIndex);
this.value = value;
if (value == null) {
throw new NullPointerException("Null arguments are not allowed");
}
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (this.getClass() != obj.getClass()) {
return false;
}
final CPConstant other = (CPConstant) obj;
if (value == null) {
if (other.value != null) {
return false;
}
} else if (!value.equals(other.value)) {
return false;
}
return true;
}
@Override
public int hashCode() {
final int PRIME = 31;
int result = 1;
result = PRIME * result + ((value == null) ? 0 : value.hashCode());
return result;
}
protected Object getValue() {
return value;
}
}