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// Copyright © 2012-2020 VLINGO LABS. All rights reserved.
//
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL
// was not distributed with this file, You can obtain
// one at https://mozilla.org/MPL/2.0/.
package io.vlingo.common;
import java.util.Objects;
import java.util.function.Consumer;
/**
* Represents an operation that accepts four input arguments and returns no
* result. This is the four-arity specialization of {@link Consumer}.
* Unlike most other functional interfaces, {@code QuadConsumer} is expected
* to operate via side-effects.
*
* This is a functional interface
* whose functional method is {@link #accept(Object, Object, Object, Object)}.
*
* @param the type of the first argument to the operation
* @param the type of the second argument to the operation
* @param the type of the third argument to the operation
* @param the type of the fourth argument to the operation
*
* @see Consumer
*/
@FunctionalInterface
public interface QuadConsumer {
/**
* Performs this operation on the given arguments.
*
* @param t the first input argument
* @param u the second input argument
* @param v the third input argument
* @param w the fourth input argument
*/
void accept(T t, U u, V v, W w);
/**
* Returns a composed {@code QuadConsumer} that performs, in sequence, this
* operation followed by the {@code after} operation. If performing either
* operation throws an exception, it is relayed to the caller of the
* composed operation. If performing this operation throws an exception,
* the {@code after} operation will not be performed.
*
* @param after the operation to perform after this operation
* @return a composed {@code QuadConsumer} that performs in sequence this
* operation followed by the {@code after} operation
* @throws NullPointerException if {@code after} is null
*/
default QuadConsumer andThen(QuadConsumer after) {
Objects.requireNonNull(after);
return (a, b, c, d) -> {
accept(a, b, c, d);
after.accept(a, b, c, d);
};
}
}