/*
 * 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 java.util.List;

/**
 * A {@link CompositeSpec} which requires any one of its specs to be true in order to evaluate to
 * true. Uses lazy evaluation.
 *
 * @author Hans Dockter
 * @param <T> The target type for this Spec
 */
public class OrSpec<T> extends CompositeSpec<T> {
    public OrSpec(Spec<? super T>... specs) {
        super(specs);
    }

    public OrSpec(Iterable<? extends Spec<? super T>> specs) {
        super(specs);
    }

    public boolean isSatisfiedBy(T object) {
        List<Spec<? super T>> specs = getSpecs();
        if (specs.isEmpty()) {
            return true;
        }

        for (Spec<? super T> spec : specs) {
            if (spec.isSatisfiedBy(object)) {
                return true;
            }
        }
        return false;
    }
}