/*******************************************************************************
* Copyright (c) 2007 IBM Corporation.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package com.ibm.wala.util.collections;
import com.ibm.wala.util.Predicate;
/**
* A filter "A or B"
*/
public class OrFilter<T> extends Predicate<T> {
public static <T> OrFilter<T> createOrFilter(Predicate<T> a, Predicate<T> b) {
if (a == null || b == null) {
throw new IllegalArgumentException("cannot compose null filter");
}
return new OrFilter<T>(a, b);
}
private final Predicate<T> a;
private final Predicate<T> b;
private OrFilter(Predicate<T> a, Predicate<T> b) {
this.a = a;
this.b = b;
}
@Override public boolean test(T o) {
return a.test(o) || b.test(o);
}
}