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Apache Commons Lang, a package of Java utility classes for the classes that are in java.lang's hierarchy, or are considered to be so standard as to justify existence in java.lang. The code is tested using the latest revision of the JDK for supported LTS releases: 8, 11, 17 and 21 currently. See https://github.com/apache/commons-lang/blob/master/.github/workflows/maven.yml Please ensure your build environment is up-to-date and kindly report any build issues.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.lang3.function;

import java.util.Objects;
import java.util.function.LongPredicate;

/**
 * A functional interface like {@link LongPredicate} that declares a {@link Throwable}.
 *
 * @param  The kind of thrown exception or error.
 * @since 3.11
 */
@FunctionalInterface
public interface FailableLongPredicate {

    /** FALSE singleton */
    @SuppressWarnings("rawtypes")
    FailableLongPredicate FALSE = t -> false;

    /** TRUE singleton */
    @SuppressWarnings("rawtypes")
    FailableLongPredicate TRUE = t -> true;

    /**
     * Returns The FALSE singleton.
     *
     * @param  The kind of thrown exception or error.
     * @return The NOP singleton.
     */
   @SuppressWarnings("unchecked")
   static  FailableLongPredicate falsePredicate() {
        return FALSE;
    }

    /**
     * Returns The TRUE singleton.
     *
     * @param  The kind of thrown exception or error.
     * @return The NOP singleton.
     */
    @SuppressWarnings("unchecked")
    static  FailableLongPredicate truePredicate() {
        return TRUE;
    }

    /**
     * Returns a composed {@link FailableLongPredicate} like {@link LongPredicate#and(LongPredicate)}.
     *
     * @param other a predicate that will be logically-ANDed with this predicate.
     * @return a composed {@link FailableLongPredicate} like {@link LongPredicate#and(LongPredicate)}.
     * @throws NullPointerException if other is null
     */
    default FailableLongPredicate and(final FailableLongPredicate other) {
        Objects.requireNonNull(other);
        return t -> test(t) && other.test(t);
    }

    /**
     * Returns a predicate that negates this predicate.
     *
     * @return a predicate that negates this predicate.
     */
    default FailableLongPredicate negate() {
        return t -> !test(t);
    }

    /**
     * Returns a composed {@link FailableLongPredicate} like {@link LongPredicate#and(LongPredicate)}.
     *
     * @param other a predicate that will be logically-ORed with this predicate.
     * @return a composed {@link FailableLongPredicate} like {@link LongPredicate#and(LongPredicate)}.
     * @throws NullPointerException if other is null
     */
    default FailableLongPredicate or(final FailableLongPredicate other) {
        Objects.requireNonNull(other);
        return t -> test(t) || other.test(t);
    }

    /**
     * Tests the predicate.
     *
     * @param value the parameter for the predicate to accept.
     * @return {@code true} if the input argument matches the predicate, {@code false} otherwise.
     * @throws E Thrown when the consumer fails.
     */
    boolean test(long value) throws E;
}