org.apache.rocketmq.shaded.com.google.common.reflect.TypeCapture Maven / Gradle / Ivy
/*
* Copyright (C) 2012 The Guava Authors
*
* Licensed 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.rocketmq.shaded.com.google.common.reflect;
import static org.apache.rocketmq.shaded.com.google.common.base.Preconditions.checkArgument;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
/**
* Captures the actual type of {@code T}.
*
* @author Ben Yu
*/
@ElementTypesAreNonnullByDefault
abstract class TypeCapture {
/** Returns the captured type. */
final Type capture() {
Type superclass = getClass().getGenericSuperclass();
checkArgument(superclass instanceof ParameterizedType, "%s isn't parameterized", superclass);
return ((ParameterizedType) superclass).getActualTypeArguments()[0];
}
}