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/*
 * Copyright 2014 The gRPC 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 io.grpc.internal;

import com.google.common.base.MoreObjects;
import com.google.common.base.Preconditions;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.ByteBuffer;

/**
 * Base class for a wrapper around another {@link ReadableBuffer}.
 *
 * 

This class just passes every operation through to the underlying buffer. Subclasses may * override methods to intercept certain operations. */ public abstract class ForwardingReadableBuffer implements ReadableBuffer { private final ReadableBuffer buf; /** * Constructor. * * @param buf the underlying buffer */ public ForwardingReadableBuffer(ReadableBuffer buf) { this.buf = Preconditions.checkNotNull(buf, "buf"); } @Override public int readableBytes() { return buf.readableBytes(); } @Override public int readUnsignedByte() { return buf.readUnsignedByte(); } @Override public int readInt() { return buf.readInt(); } @Override public void skipBytes(int length) { buf.skipBytes(length); } @Override public void readBytes(byte[] dest, int destOffset, int length) { buf.readBytes(dest, destOffset, length); } @Override public void readBytes(ByteBuffer dest) { buf.readBytes(dest); } @Override public void readBytes(OutputStream dest, int length) throws IOException { buf.readBytes(dest, length); } @Override public ReadableBuffer readBytes(int length) { return buf.readBytes(length); } @Override public boolean hasArray() { return buf.hasArray(); } @Override public byte[] array() { return buf.array(); } @Override public int arrayOffset() { return buf.arrayOffset(); } @Override public void close() { buf.close(); } @Override public String toString() { return MoreObjects.toStringHelper(this).add("delegate", buf).toString(); } }





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