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;
019
020import com.google.common.reflect.TypeToken;
021
022public interface ObjectWithTypeToken<T> {
023
024    T object();
025
026    TypeToken<T> typeToken();
027
028    @SuppressWarnings("unchecked")
029    default <X> X as(TypeToken<?> typeToken) {
030        if (!typeToken().equals(typeToken)) {
031            throw new IllegalStateException(
032                    "Requested " + typeToken.toString() + ", but I'm a " + typeToken().toString());
033        }
034        return (X) object();
035    }
036}