diff options
Diffstat (limited to 'legacy-test/src/com/android/internal/util/Predicates.java')
-rw-r--r-- | legacy-test/src/com/android/internal/util/Predicates.java | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/legacy-test/src/com/android/internal/util/Predicates.java b/legacy-test/src/com/android/internal/util/Predicates.java deleted file mode 100644 index fe1ff1529138..000000000000 --- a/legacy-test/src/com/android/internal/util/Predicates.java +++ /dev/null @@ -1,127 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * 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 com.android.internal.util; - -import java.util.Arrays; - -/** - * Predicates contains static methods for creating the standard set of - * {@code Predicate} objects. - * - * @hide - */ -public class Predicates { - - private Predicates() { - } - - /** - * Returns a Predicate that evaluates to true iff each of its components - * evaluates to true. The components are evaluated in order, and evaluation - * will be "short-circuited" as soon as the answer is determined. - */ - public static <T> Predicate<T> and(Predicate<? super T>... components) { - return Predicates.<T>and(Arrays.asList(components)); - } - - /** - * Returns a Predicate that evaluates to true iff each of its components - * evaluates to true. The components are evaluated in order, and evaluation - * will be "short-circuited" as soon as the answer is determined. Does not - * defensively copy the iterable passed in, so future changes to it will alter - * the behavior of this Predicate. If components is empty, the returned - * Predicate will always evaluate to true. - */ - public static <T> Predicate<T> and(Iterable<? extends Predicate<? super T>> components) { - return new AndPredicate(components); - } - - /** - * Returns a Predicate that evaluates to true iff any one of its components - * evaluates to true. The components are evaluated in order, and evaluation - * will be "short-circuited" as soon as the answer is determined. - */ - public static <T> Predicate<T> or(Predicate<? super T>... components) { - return Predicates.<T>or(Arrays.asList(components)); - } - - /** - * Returns a Predicate that evaluates to true iff any one of its components - * evaluates to true. The components are evaluated in order, and evaluation - * will be "short-circuited" as soon as the answer is determined. Does not - * defensively copy the iterable passed in, so future changes to it will alter - * the behavior of this Predicate. If components is empty, the returned - * Predicate will always evaluate to false. - */ - public static <T> Predicate<T> or(Iterable<? extends Predicate<? super T>> components) { - return new OrPredicate(components); - } - - /** - * Returns a Predicate that evaluates to true iff the given Predicate - * evaluates to false. - */ - public static <T> Predicate<T> not(Predicate<? super T> predicate) { - return new NotPredicate<T>(predicate); - } - - private static class AndPredicate<T> implements Predicate<T> { - private final Iterable<? extends Predicate<? super T>> components; - - private AndPredicate(Iterable<? extends Predicate<? super T>> components) { - this.components = components; - } - - public boolean apply(T t) { - for (Predicate<? super T> predicate : components) { - if (!predicate.apply(t)) { - return false; - } - } - return true; - } - } - - private static class OrPredicate<T> implements Predicate<T> { - private final Iterable<? extends Predicate<? super T>> components; - - private OrPredicate(Iterable<? extends Predicate<? super T>> components) { - this.components = components; - } - - public boolean apply(T t) { - for (Predicate<? super T> predicate : components) { - if (predicate.apply(t)) { - return true; - } - } - return false; - } - } - - private static class NotPredicate<T> implements Predicate<T> { - private final Predicate<? super T> predicate; - - private NotPredicate(Predicate<? super T> predicate) { - this.predicate = predicate; - } - - public boolean apply(T t) { - return !predicate.apply(t); - } - } -} |