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The AspectJ weaver introduces advices to java classes
/* *******************************************************************
* Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Xerox/PARC initial implementation
* ******************************************************************/
package org.aspectj.util;
import java.io.DataOutputStream;
import java.io.IOException;
public class TypeSafeEnum {
private byte key;
private String name;
public TypeSafeEnum(String name, int key) {
this.name = name;
if (key > Byte.MAX_VALUE || key < Byte.MIN_VALUE) {
throw new IllegalArgumentException("key doesn't fit into a byte: " + key);
}
this.key = (byte) key;
}
public String toString() {
return name;
}
public String getName() {
return name;
}
public byte getKey() {
return key;
}
public void write(DataOutputStream s) throws IOException {
s.writeByte(key);
}
@Override
public int hashCode() {
return name.hashCode()*37+key;
}
@Override
public boolean equals(Object o) {
return (o instanceof TypeSafeEnum) &&
((TypeSafeEnum)o).key == key &&
((TypeSafeEnum)o).name.equals(name);
}
}