/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* 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 jetbrains.mps.aspects;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
public class OrderDescriptor<T> implements Comparator<T> {
private List<T> myOrderData;
public OrderDescriptor(T ... orderData) {
myOrderData = Arrays.asList(orderData);
}
@Override
public int compare(T d1, T d2) {
int i1 = myOrderData.indexOf(d1);
int i2 = myOrderData.indexOf(d2);
if (i1 == -1 || i2 == -1) return 0;
return i1 - i2;
}
}