Clean up code and remove the BufferAdaptor
Instead use Mockito to implement the throwing behaviour on the buffers in those tests. Sadly Mockito cannot spy or mock our Buffer implementation classes, and does not allow mocking an interface while spying on an implementation, so we have to do a more complicated dance with our mocking.
This commit is contained in:
Chris Vest
parent
c09276373e
commit
926a1807b4
6
pom.xml
6
pom.xml
@ -399,6 +399,12 @@
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<version>3.18.0</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<version>3.9.0</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>io.netty</groupId>
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<artifactId>netty-build-common</artifactId>
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@ -1,535 +0,0 @@
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/*
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* Copyright 2021 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.buffer.api.adaptor;
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import io.netty.buffer.api.Buffer;
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import io.netty.buffer.api.BufferHolder;
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import io.netty.buffer.api.ByteCursor;
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import io.netty.buffer.api.ReadableComponentProcessor;
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import io.netty.buffer.api.Send;
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import io.netty.buffer.api.WritableComponentProcessor;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.Objects;
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import java.util.function.Function;
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/**
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* A {@link Buffer} implementation that delegates all method calls to a given delegate buffer instance.
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*/
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public abstract class BufferAdaptor implements Buffer {
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protected Buffer buffer;
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protected BufferAdaptor(Buffer buffer) {
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this.buffer = Objects.requireNonNull(buffer, "Delegate buffer cannot be null.");
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}
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@Override
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public Buffer order(ByteOrder order) {
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buffer.order(order);
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return this;
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}
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@Override
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public ByteOrder order() {
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return buffer.order();
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}
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@Override
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public int capacity() {
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return buffer.capacity();
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}
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@Override
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public int readerOffset() {
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return buffer.readerOffset();
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}
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@Override
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public Buffer readerOffset(int offset) {
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buffer.readerOffset(offset);
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return this;
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}
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@Override
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public int writerOffset() {
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return buffer.writerOffset();
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}
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@Override
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public Buffer writerOffset(int offset) {
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buffer.writerOffset(offset);
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return this;
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}
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@Override
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public int readableBytes() {
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return buffer.readableBytes();
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}
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@Override
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public int writableBytes() {
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return buffer.writableBytes();
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}
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@Override
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public Buffer fill(byte value) {
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buffer.fill(value);
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return this;
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}
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@Override
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public long nativeAddress() {
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return buffer.nativeAddress();
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}
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@Override
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public Buffer readOnly(boolean readOnly) {
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buffer.readOnly(readOnly);
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return this;
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}
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@Override
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public boolean readOnly() {
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return buffer.readOnly();
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}
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@Override
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public void copyInto(int srcPos, byte[] dest, int destPos, int length) {
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buffer.copyInto(srcPos, dest, destPos, length);
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}
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@Override
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public void copyInto(int srcPos, ByteBuffer dest, int destPos, int length) {
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buffer.copyInto(srcPos, dest, destPos, length);
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}
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@Override
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public void copyInto(int srcPos, Buffer dest, int destPos, int length) {
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buffer.copyInto(srcPos, dest, destPos, length);
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}
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@Override
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public Buffer reset() {
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buffer.reset();
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return this;
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}
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@Override
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public ByteCursor openCursor() {
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return buffer.openCursor();
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}
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@Override
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public ByteCursor openCursor(int fromOffset, int length) {
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return buffer.openCursor(fromOffset, length);
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}
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@Override
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public ByteCursor openReverseCursor() {
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return buffer.openReverseCursor();
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}
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@Override
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public ByteCursor openReverseCursor(int fromOffset, int length) {
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return buffer.openReverseCursor(fromOffset, length);
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}
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@Override
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public void ensureWritable(int size) {
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buffer.ensureWritable(size);
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}
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@Override
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public void ensureWritable(int size, int minimumGrowth, boolean allowCompaction) {
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buffer.ensureWritable(size, minimumGrowth, allowCompaction);
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}
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@Override
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public Buffer slice() {
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buffer.slice();
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return this;
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}
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@Override
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public Buffer slice(int offset, int length) {
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buffer.slice(offset, length);
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return this;
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}
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@Override
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public Buffer bifurcate() {
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buffer.bifurcate();
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return this;
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}
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@Override
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public Buffer bifurcate(int splitOffset) {
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buffer.bifurcate(splitOffset);
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return this;
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}
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@Override
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public void compact() {
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buffer.compact();
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}
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@Override
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public int countComponents() {
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return buffer.countComponents();
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}
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@Override
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public int countReadableComponents() {
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return buffer.countReadableComponents();
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}
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@Override
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public int countWritableComponents() {
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return buffer.countWritableComponents();
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}
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@Override
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public <E extends Exception> int forEachReadable(int initialIndex, ReadableComponentProcessor<E> processor)
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throws E {
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return buffer.forEachReadable(initialIndex, processor);
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}
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@Override
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public <E extends Exception> int forEachWritable(int initialIndex, WritableComponentProcessor<E> processor)
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throws E {
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return buffer.forEachWritable(initialIndex, processor);
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}
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@Override
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public byte readByte() {
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return buffer.readByte();
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}
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@Override
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public byte getByte(int roff) {
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return buffer.getByte(roff);
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}
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@Override
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public int readUnsignedByte() {
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return buffer.readUnsignedByte();
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}
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@Override
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public int getUnsignedByte(int roff) {
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return buffer.getUnsignedByte(roff);
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}
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@Override
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public Buffer writeByte(byte value) {
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buffer.writeByte(value);
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return this;
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}
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@Override
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public Buffer setByte(int woff, byte value) {
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buffer.setByte(woff, value);
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return this;
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}
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@Override
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public Buffer writeUnsignedByte(int value) {
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buffer.writeUnsignedByte(value);
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return this;
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}
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@Override
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public Buffer setUnsignedByte(int woff, int value) {
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buffer.setUnsignedByte(woff, value);
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return this;
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}
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@Override
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public char readChar() {
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return buffer.readChar();
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}
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@Override
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public char getChar(int roff) {
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return buffer.getChar(roff);
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}
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@Override
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public Buffer writeChar(char value) {
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buffer.writeChar(value);
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return this;
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}
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@Override
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public Buffer setChar(int woff, char value) {
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buffer.setChar(woff, value);
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return this;
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}
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@Override
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public short readShort() {
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return buffer.readShort();
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}
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@Override
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public short getShort(int roff) {
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return buffer.getShort(roff);
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}
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@Override
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public int readUnsignedShort() {
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return buffer.readUnsignedShort();
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}
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@Override
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public int getUnsignedShort(int roff) {
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return buffer.getUnsignedShort(roff);
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}
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@Override
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public Buffer writeShort(short value) {
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buffer.writeShort(value);
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return this;
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}
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@Override
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public Buffer setShort(int woff, short value) {
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buffer.setShort(woff, value);
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return this;
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}
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@Override
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public Buffer writeUnsignedShort(int value) {
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buffer.writeUnsignedShort(value);
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return this;
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}
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@Override
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public Buffer setUnsignedShort(int woff, int value) {
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buffer.setUnsignedShort(woff, value);
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return this;
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}
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@Override
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public int readMedium() {
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return buffer.readMedium();
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}
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@Override
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public int getMedium(int roff) {
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return buffer.getMedium(roff);
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}
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@Override
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public int readUnsignedMedium() {
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return buffer.readUnsignedMedium();
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}
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@Override
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public int getUnsignedMedium(int roff) {
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return buffer.getUnsignedMedium(roff);
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}
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@Override
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public Buffer writeMedium(int value) {
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buffer.writeMedium(value);
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return this;
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}
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@Override
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public Buffer setMedium(int woff, int value) {
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buffer.setMedium(woff, value);
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return this;
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}
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@Override
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public Buffer writeUnsignedMedium(int value) {
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buffer.writeUnsignedMedium(value);
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return this;
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}
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@Override
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public Buffer setUnsignedMedium(int woff, int value) {
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buffer.setUnsignedMedium(woff, value);
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return this;
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}
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@Override
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public int readInt() {
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return buffer.readInt();
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}
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@Override
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public int getInt(int roff) {
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return buffer.getInt(roff);
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}
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@Override
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public long readUnsignedInt() {
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return buffer.readUnsignedInt();
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}
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@Override
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public long getUnsignedInt(int roff) {
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return buffer.getUnsignedInt(roff);
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}
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@Override
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public Buffer writeInt(int value) {
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buffer.writeInt(value);
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return this;
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}
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@Override
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public Buffer setInt(int woff, int value) {
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buffer.setInt(woff, value);
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return this;
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}
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@Override
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public Buffer writeUnsignedInt(long value) {
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buffer.writeUnsignedInt(value);
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return this;
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}
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@Override
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public Buffer setUnsignedInt(int woff, long value) {
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buffer.setUnsignedInt(woff, value);
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return this;
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}
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@Override
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public float readFloat() {
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return buffer.readFloat();
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}
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@Override
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public float getFloat(int roff) {
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return buffer.getFloat(roff);
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}
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@Override
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public Buffer writeFloat(float value) {
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buffer.writeFloat(value);
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return this;
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}
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@Override
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public Buffer setFloat(int woff, float value) {
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buffer.setFloat(woff, value);
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return this;
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}
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@Override
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public long readLong() {
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return buffer.readLong();
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}
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@Override
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public long getLong(int roff) {
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return buffer.getLong(roff);
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}
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@Override
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public Buffer writeLong(long value) {
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buffer.writeLong(value);
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return this;
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}
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@Override
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public Buffer setLong(int woff, long value) {
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buffer.setLong(woff, value);
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return this;
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}
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@Override
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public double readDouble() {
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return buffer.readDouble();
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}
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@Override
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public double getDouble(int roff) {
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return buffer.getDouble(roff);
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}
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@Override
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public Buffer writeDouble(double value) {
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buffer.writeDouble(value);
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return this;
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}
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@Override
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public Buffer setDouble(int woff, double value) {
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buffer.setDouble(woff, value);
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return this;
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}
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@Override
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public Buffer acquire() {
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buffer.acquire();
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return this;
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}
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@Override
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public Buffer get() {
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buffer.get();
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return this;
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}
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@Override
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public boolean isInstanceOf(Class<?> cls) {
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return buffer.isInstanceOf(cls);
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}
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@Override
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public void close() {
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buffer.close();
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}
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@SuppressWarnings("unchecked")
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@Override
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public Send<Buffer> send() {
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Class<Buffer> aClass = (Class<Buffer>) (Class<?>) getClass();
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Function<Buffer, Buffer> receive = this::receive;
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return buffer.send().map(aClass, receive);
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}
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/**
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* Called when a {@linkplain #send() sent} {@link BufferAdaptor} is received by the recipient.
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* The {@link BufferAdaptor} should return a new concrete instance, that wraps the given {@link Buffer} object.
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*
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* @param buf The {@link Buffer} that is {@linkplain Send#receive() received} by the recipient,
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* and needs to be wrapped in a new {@link BufferHolder} instance.
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* @return A new buffer adaptor instance, containing the given {@linkplain Buffer buffer}.
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*/
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protected abstract BufferAdaptor receive(Buffer buf);
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@Override
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public boolean isOwned() {
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return buffer.isOwned();
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}
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@Override
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public int countBorrows() {
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return buffer.countBorrows();
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}
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@Override
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public boolean isAccessible() {
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return buffer.isAccessible();
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}
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}
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@ -93,10 +93,12 @@ public abstract class AlternativeMessageDecoder extends ChannelHandlerAdapter {
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if (collector.isOwned()) {
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collector.ensureWritable(input.readableBytes(), DEFAULT_CHUNK_SIZE, true);
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} else {
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try (Buffer prev = collector) {
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int requiredCapacity = input.capacity() + prev.readableBytes();
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collector = allocator.allocate(Math.max(requiredCapacity, DEFAULT_CHUNK_SIZE), input.order());
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collector.writeBytes(prev);
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int requiredCapacity = input.readableBytes() + collector.readableBytes();
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int allocationSize = Math.max(requiredCapacity, DEFAULT_CHUNK_SIZE);
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try (Buffer newBuffer = allocator.allocate(allocationSize, input.order())) {
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newBuffer.writeBytes(collector);
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collector.close();
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collector = newBuffer.acquire();
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}
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}
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collector.writeBytes(input);
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@ -17,18 +17,18 @@ package io.netty.buffer.api.examples.bytetomessagedecoder;
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import io.netty.buffer.api.Buffer;
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import io.netty.buffer.api.BufferAllocator;
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import io.netty.buffer.api.adaptor.BufferAdaptor;
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import io.netty.channel.ChannelHandler;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.embedded.EmbeddedChannel;
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import io.netty.channel.socket.ChannelInputShutdownEvent;
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import org.junit.Test;
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import org.mockito.stubbing.Answer;
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import java.nio.ByteOrder;
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import java.util.concurrent.BlockingQueue;
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import java.util.concurrent.LinkedBlockingDeque;
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import java.util.concurrent.ThreadLocalRandom;
|
||||
import java.util.concurrent.atomic.AtomicBoolean;
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
|
||||
import static io.netty.buffer.api.BufferAllocator.heap;
|
||||
import static io.netty.buffer.api.BufferTestSupport.assertEquals;
|
||||
@ -37,9 +37,12 @@ import static java.nio.ByteOrder.LITTLE_ENDIAN;
|
||||
import static org.assertj.core.api.Assertions.assertThat;
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertNull;
|
||||
import static org.junit.Assert.assertSame;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
import static org.junit.Assert.fail;
|
||||
import static org.mockito.ArgumentMatchers.any;
|
||||
import static org.mockito.Mockito.doAnswer;
|
||||
import static org.mockito.Mockito.mock;
|
||||
import static org.mockito.Mockito.withSettings;
|
||||
|
||||
public class ByteToMessageDecoderTest {
|
||||
|
||||
@ -334,41 +337,9 @@ public class ByteToMessageDecoderTest {
|
||||
assertFalse(channel.finish());
|
||||
}
|
||||
|
||||
static class WriteFailingByteBuf extends BufferAdaptor {
|
||||
private final Error error = new Error();
|
||||
private int untilFailure;
|
||||
|
||||
WriteFailingByteBuf(int untilFailure, int capacity) {
|
||||
this(untilFailure, heap().allocate(capacity, BIG_ENDIAN));
|
||||
this.untilFailure = untilFailure;
|
||||
}
|
||||
|
||||
private WriteFailingByteBuf(int untilFailure, Buffer buffer) {
|
||||
super(buffer);
|
||||
this.untilFailure = untilFailure;
|
||||
}
|
||||
|
||||
@Override
|
||||
public Buffer order(ByteOrder order) {
|
||||
if (order == LITTLE_ENDIAN && --untilFailure <= 0) {
|
||||
throw error;
|
||||
}
|
||||
return super.order(order);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected BufferAdaptor receive(Buffer buf) {
|
||||
return new WriteFailingByteBuf(untilFailure, buf);
|
||||
}
|
||||
|
||||
Error writeError() {
|
||||
return error;
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void releaseWhenMergeCumulateThrows() {
|
||||
WriteFailingByteBuf oldCumulation = new WriteFailingByteBuf(1, 64);
|
||||
Buffer oldCumulation = writeFailingCumulation(1, 64);
|
||||
oldCumulation.writeByte((byte) 0);
|
||||
Buffer in = heap().allocate(12, BIG_ENDIAN).writerOffset(12);
|
||||
|
||||
@ -379,12 +350,33 @@ public class ByteToMessageDecoderTest {
|
||||
thrown = t;
|
||||
}
|
||||
|
||||
assertSame(oldCumulation.writeError(), thrown);
|
||||
assertThat(thrown).hasMessage("boom");
|
||||
assertFalse(in.isAccessible());
|
||||
assertTrue(oldCumulation.isOwned());
|
||||
oldCumulation.close();
|
||||
}
|
||||
|
||||
private static Buffer writeFailingCumulation(int untilFailure, int capacity) {
|
||||
Buffer realBuffer = heap().allocate(capacity, BIG_ENDIAN);
|
||||
Answer<Object> callRealBuffer = inv -> {
|
||||
Object result = inv.getMethod().invoke(realBuffer, inv.getArguments());
|
||||
if (result == realBuffer) {
|
||||
// Preserve mock wrapper for methods that returns the callee ('this') buffer instance.
|
||||
return inv.getMock();
|
||||
}
|
||||
return result;
|
||||
};
|
||||
Buffer buffer = mock(Buffer.class, withSettings().defaultAnswer(callRealBuffer));
|
||||
AtomicInteger countDown = new AtomicInteger(untilFailure);
|
||||
doAnswer(inv -> {
|
||||
if (countDown.decrementAndGet() <= 0) {
|
||||
throw new Error("boom");
|
||||
}
|
||||
return callRealBuffer.answer(inv);
|
||||
}).when(buffer).writeBytes(any(Buffer.class));
|
||||
return buffer;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void releaseWhenMergeCumulateThrowsInExpand() {
|
||||
releaseWhenMergeCumulateThrowsInExpand(1, true);
|
||||
@ -394,7 +386,7 @@ public class ByteToMessageDecoderTest {
|
||||
|
||||
private static void releaseWhenMergeCumulateThrowsInExpand(int untilFailure, boolean shouldFail) {
|
||||
Buffer oldCumulation = heap().allocate(8, BIG_ENDIAN).writeByte((byte) 0);
|
||||
final WriteFailingByteBuf newCumulation = new WriteFailingByteBuf(untilFailure, 16);
|
||||
Buffer newCumulation = writeFailingCumulation(untilFailure, 16);
|
||||
|
||||
BufferAllocator allocator = new BufferAllocator() {
|
||||
@Override
|
||||
@ -414,7 +406,7 @@ public class ByteToMessageDecoderTest {
|
||||
assertFalse(in.isAccessible());
|
||||
|
||||
if (shouldFail) {
|
||||
assertSame(newCumulation.writeError(), thrown);
|
||||
assertThat(thrown).hasMessage("boom");
|
||||
assertTrue(oldCumulation.isOwned());
|
||||
oldCumulation.close();
|
||||
assertFalse(newCumulation.isAccessible());
|
||||
|
||||
Loading…
Reference in New Issue
Block a user