/*
 * 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.tsfile.external.commons.io.function;

import java.io.IOException;
import java.util.Objects;
import java.util.function.BiFunction;
import java.util.function.Function;

/**
 * Like {@link BiFunction} but throws {@link IOException}.
 *
 * <p>This is a <a href="package-summary.html">functional interface</a> whose functional method is
 * {@link #apply(Object, Object)}.
 *
 * @param <T> the type of the first argument to the function
 * @param <U> the type of the second argument to the function
 * @param <R> the type of the result of the function
 * @see Function
 * @since 2.12.0
 */
@FunctionalInterface
public interface IOBiFunction<T, U, R> {

  /**
   * Creates 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 <V> 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 <V> IOBiFunction<T, U, V> andThen(final IOFunction<? super R, ? extends V> after) {
    Objects.requireNonNull(after);
    return (final T t, final U u) -> after.apply(apply(t, u));
  }

  /**
   * Applies this function to the given arguments.
   *
   * @param t the first function argument
   * @param u the second function argument
   * @return the function result
   * @throws IOException if an I/O error occurs.
   */
  R apply(T t, U u) throws IOException;
}
