io.honeybadger.org.apache.commons.lang3.function.FailableIntUnaryOperator Maven / Gradle / Ivy
/*
* 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.IntUnaryOperator;
/**
* A functional interface like {@link IntUnaryOperator} that declares a {@code Throwable}.
*
* @param Thrown exception.
* @since 3.11
*/
public interface FailableIntUnaryOperator {
/** NOP singleton */
@SuppressWarnings("rawtypes")
FailableIntUnaryOperator NOP = t -> 0;
/**
* Returns a unary operator that always returns its input argument.
*
* @param Thrown exception.
* @return a unary operator that always returns its input argument
*/
static FailableIntUnaryOperator identity() {
return t -> t;
}
/**
* Returns The NOP singleton.
*
* @param Thrown exception.
* @return The NOP singleton.
*/
static FailableIntUnaryOperator nop() {
return NOP;
}
/**
* Returns a composed {@code FailableDoubleUnaryOperator} like {@link IntUnaryOperator#andThen(IntUnaryOperator)}.
*
* @param after the operator to apply after this one.
* @return a composed {@code FailableIntUnaryOperator} like {@link IntUnaryOperator#andThen(IntUnaryOperator)}.
* @throws NullPointerException if after is null.
* @see #compose(FailableIntUnaryOperator)
*/
default FailableIntUnaryOperator andThen(final FailableIntUnaryOperator after) {
Objects.requireNonNull(after);
return (final int t) -> after.applyAsInt(applyAsInt(t));
}
/**
* Applies this operator to the given operand.
*
* @param operand the operand
* @return the operator result
* @throws E Thrown when a consumer fails.
*/
int applyAsInt(int operand) throws E;
/**
* Returns a composed {@code FailableIntUnaryOperator} like {@link IntUnaryOperator#compose(IntUnaryOperator)}.
*
* @param before the operator to apply before this one.
* @return a composed {@code FailableIntUnaryOperator} like {@link IntUnaryOperator#compose(IntUnaryOperator)}.
* @throws NullPointerException if before is null.
* @see #andThen(FailableIntUnaryOperator)
*/
default FailableIntUnaryOperator compose(final FailableIntUnaryOperator before) {
Objects.requireNonNull(before);
return (final int v) -> applyAsInt(before.applyAsInt(v));
}
}