netty-incubator-buffer-api/buffer-api/src/main/java/io/netty/buffer/api/WritableComponentProcessor....

41 lines
1.8 KiB
Java

/*
* Copyright 2020 The Netty Project
*
* The Netty Project 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:
*
* https://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 io.netty.buffer.api;
import java.nio.ByteBuffer;
/**
* A processor of {@linkplain WritableComponent writable components}.
*/
@FunctionalInterface
public interface WritableComponentProcessor<E extends Exception> {
/**
* Process the given component at the given index in the
* {@link Buffer#forEachWritable(int, WritableComponentProcessor)} iteration}.
* <p>
* The component object itself is only valid during this call, but the {@link ByteBuffer byte buffers}, arrays, and
* native address pointers obtained from it, will be valid until any {@link Buffer#isOwned() ownership} requiring
* operation is performed on the buffer.
*
* @param index The current index of the given buffer component, based on the initial index passed to the
* {@link Buffer#forEachWritable(int, WritableComponentProcessor)} method.
* @param component The current buffer component being processed.
* @return {@code true} if the iteration should continue and more components should be processed, otherwise
* {@code false} to stop the iteration early.
*/
boolean process(int index, WritableComponent component) throws E;
}