001/*
002 * SPDX-License-Identifier: Apache-2.0
003 *
004 * Copyright 2024-2026 The Enola <https://enola.dev> Authors
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 *     https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package dev.enola.common.convert;
019
020import org.jspecify.annotations.Nullable;
021
022/**
023 * Bi-directional alternative to {@link Converter}.
024 *
025 * <p>See also Guava's similar {@link com.google.common.base.Converter}.
026 *
027 * @param <A> the first type that can be converted to and from
028 * @param <B> the second type that can be converted to and from
029 */
030public interface BiConverter<A, B> {
031
032    @Nullable B convertTo(@Nullable A input) throws ConversionException;
033
034    @Nullable A convertFrom(@Nullable B input) throws ConversionException;
035}