/**
* Copyright (C) 2016 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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.jboss.errai.ioc.rebind.ioc.bootstrapper;
import java.lang.annotation.ElementType;
import org.jboss.errai.ioc.client.api.CodeDecorator;
/**
* A runnable for executing {@link CodeDecorator CodeDecorators} that can be sorted in the proper execution order.
*
* @author Max Barkley <mbarkley@redhat.com>
*/
public class DecoratorRunnable implements Comparable<DecoratorRunnable>, Runnable {
public int decoratorOrder;
public ElementType elementType;
private final Runnable runnable;
public DecoratorRunnable(final int decoratorOrder, final ElementType elementType, final Runnable runnable) {
this.decoratorOrder = decoratorOrder;
this.elementType = elementType;
this.runnable = runnable;
}
@Override
public int compareTo(final DecoratorRunnable o) {
final Long orderDifference = getTotalOrder() - o.getTotalOrder();
if (orderDifference < 0) {
return -1;
}
else if (orderDifference > 0) {
return 1;
}
else {
return 0;
}
}
private long getTotalOrder() {
return (decoratorOrder << 2) + elementTypeToLong();
}
private long elementTypeToLong() {
switch (elementType) {
case FIELD:
return 0L;
case PARAMETER:
return 1L;
case METHOD:
return 2L;
case TYPE:
return 3L;
default:
throw new RuntimeException("Invalid element type " + elementType.toString());
}
}
@Override
public void run() {
runnable.run();
}
}