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/*
 * Copyright (C) 2022 Parisi Alessandro - [email protected]
 * This file is part of MaterialFX (https://github.com/palexdev/MaterialFX)
 *
 * MaterialFX is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3 of the License,
 * or (at your option) any later version.
 *
 * MaterialFX is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with MaterialFX. If not, see .
 */

package io.github.palexdev.mfxeffects.utils;

import java.util.Objects;
import java.util.function.Function;

/**
 * Represents a function that accepts three arguments and produces a result.
 *
 * This is a functional interface
 * whose functional method is {@link #apply(Object, Object, Object)}.
 *
 * @param  the type of the first argument to the function
 * @param  the type of the second argument to the function
 * @param  the type of the third argument to the function
 * @param  the type of the result of the function
 */
@FunctionalInterface
public interface TriFunction {

	/**
	 * Applies this function to the given arguments.
	 *
	 * @param t the first function argument
	 * @param u the second function argument
	 * @param v the third function argument
	 * @return the function result
	 */
	R apply(T t, U u, V v);

	/**
	 * Returns a composed function that first applies this function to
	 * its input, and then applies the {@code after} function to the result.
	 * If evaluation of either function throws an exception, it is relayed to
	 * the caller of the composed function.
	 *
	 * @param    the type of output of the {@code after} function, and of the
	 *              composed function
	 * @param after the function to apply after this function is applied
	 * @return a composed function that first applies this function and then
	 * applies the {@code after} function
	 * @throws NullPointerException if after is null
	 */
	default  TriFunction andThen(Function after) {
		Objects.requireNonNull(after);
		return (t, u, v) -> after.apply(apply(t, u, v));
	}
}