/*
* Copyright 2007-2008 the original author or authors.
*
* 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.gradle.api.specs;
import com.google.common.collect.ObjectArrays;
/**
* A {@link CompositeSpec} which requires any one of its specs to be true in order to evaluate to
* true. Uses lazy evaluation.
*
* @param <T> The target type for this Spec
*/
public class OrSpec<T> extends CompositeSpec<T> {
public static final OrSpec<?> EMPTY = new OrSpec<Object>();
public OrSpec() {
super();
}
public OrSpec(Spec<? super T>... specs) {
super(specs);
}
public OrSpec(Iterable<? extends Spec<? super T>> specs) {
super(specs);
}
public boolean isSatisfiedBy(T object) {
Spec<? super T>[] specs = getSpecsArray();
if (specs.length == 0) {
return true;
}
for (Spec<? super T> spec : specs) {
if (spec.isSatisfiedBy(object)) {
return true;
}
}
return false;
}
public OrSpec<T> or(Spec<? super T>... specs) {
if (specs.length == 0) {
return this;
}
Spec<? super T>[] thisSpecs = getSpecsArray();
int thisLength = thisSpecs.length;
if (thisLength == 0) {
return new OrSpec<T>(specs);
}
Spec<? super T>[] combinedSpecs = uncheckedCast(ObjectArrays.newArray(Spec.class, thisLength + specs.length));
System.arraycopy(thisSpecs, 0, combinedSpecs, 0, thisLength);
System.arraycopy(specs, 0, combinedSpecs, thisLength, specs.length);
return new OrSpec<T>(combinedSpecs);
}
public static <T> OrSpec<T> empty() {
return uncheckedCast(EMPTY);
}
@Override
public int hashCode() {
return 13 * super.hashCode();
}
}