478 lines
12 KiB
Java
478 lines
12 KiB
Java
/*
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* Copyright 2016 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.netty5.buffer;
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import io.netty5.util.ByteProcessor;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.channels.FileChannel;
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import java.nio.channels.GatheringByteChannel;
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import java.nio.channels.ScatteringByteChannel;
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import java.nio.charset.Charset;
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import static io.netty5.util.internal.MathUtil.isOutOfBounds;
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abstract class AbstractUnpooledSlicedByteBuf extends AbstractDerivedByteBuf {
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private final ByteBuf buffer;
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private final int adjustment;
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AbstractUnpooledSlicedByteBuf(ByteBuf buffer, int index, int length) {
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super(length);
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checkSliceOutOfBounds(index, length, buffer);
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if (buffer instanceof AbstractUnpooledSlicedByteBuf) {
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this.buffer = ((AbstractUnpooledSlicedByteBuf) buffer).buffer;
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adjustment = ((AbstractUnpooledSlicedByteBuf) buffer).adjustment + index;
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} else if (buffer instanceof DuplicatedByteBuf) {
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this.buffer = buffer.unwrap();
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adjustment = index;
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} else {
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this.buffer = buffer;
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adjustment = index;
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}
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initLength(length);
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writerIndex(length);
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}
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/**
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* Called by the constructor before {@link #writerIndex(int)}.
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* @param length the {@code length} argument from the constructor.
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*/
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void initLength(int length) {
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}
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int length() {
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return capacity();
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}
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@Override
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public ByteBuf unwrap() {
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return buffer;
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}
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@Override
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public ByteBufAllocator alloc() {
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return unwrap().alloc();
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}
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@Override
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@Deprecated
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public ByteOrder order() {
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return unwrap().order();
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}
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@Override
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public boolean isDirect() {
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return unwrap().isDirect();
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}
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@Override
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public ByteBuf capacity(int newCapacity) {
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throw new UnsupportedOperationException("sliced buffer");
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}
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@Override
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public boolean hasArray() {
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return unwrap().hasArray();
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}
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@Override
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public byte[] array() {
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return unwrap().array();
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}
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@Override
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public int arrayOffset() {
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return idx(unwrap().arrayOffset());
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}
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@Override
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public boolean hasMemoryAddress() {
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return unwrap().hasMemoryAddress();
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}
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@Override
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public long memoryAddress() {
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return unwrap().memoryAddress() + adjustment;
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}
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@Override
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public byte getByte(int index) {
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checkIndex0(index, 1);
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return unwrap().getByte(idx(index));
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}
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@Override
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protected byte _getByte(int index) {
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return unwrap().getByte(idx(index));
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}
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@Override
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public short getShort(int index) {
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checkIndex0(index, 2);
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return unwrap().getShort(idx(index));
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}
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@Override
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protected short _getShort(int index) {
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return unwrap().getShort(idx(index));
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}
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@Override
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public short getShortLE(int index) {
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checkIndex0(index, 2);
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return unwrap().getShortLE(idx(index));
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}
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@Override
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protected short _getShortLE(int index) {
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return unwrap().getShortLE(idx(index));
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}
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@Override
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public int getUnsignedMedium(int index) {
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checkIndex0(index, 3);
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return unwrap().getUnsignedMedium(idx(index));
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}
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@Override
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protected int _getUnsignedMedium(int index) {
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return unwrap().getUnsignedMedium(idx(index));
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}
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@Override
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public int getUnsignedMediumLE(int index) {
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checkIndex0(index, 3);
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return unwrap().getUnsignedMediumLE(idx(index));
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}
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@Override
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protected int _getUnsignedMediumLE(int index) {
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return unwrap().getUnsignedMediumLE(idx(index));
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}
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@Override
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public int getInt(int index) {
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checkIndex0(index, 4);
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return unwrap().getInt(idx(index));
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}
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@Override
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protected int _getInt(int index) {
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return unwrap().getInt(idx(index));
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}
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@Override
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public int getIntLE(int index) {
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checkIndex0(index, 4);
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return unwrap().getIntLE(idx(index));
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}
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@Override
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protected int _getIntLE(int index) {
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return unwrap().getIntLE(idx(index));
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}
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@Override
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public long getLong(int index) {
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checkIndex0(index, 8);
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return unwrap().getLong(idx(index));
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}
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@Override
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protected long _getLong(int index) {
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return unwrap().getLong(idx(index));
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}
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@Override
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public long getLongLE(int index) {
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checkIndex0(index, 8);
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return unwrap().getLongLE(idx(index));
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}
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@Override
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protected long _getLongLE(int index) {
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return unwrap().getLongLE(idx(index));
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}
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@Override
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public ByteBuf duplicate() {
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return unwrap().duplicate().setIndex(idx(readerIndex()), idx(writerIndex()));
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}
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@Override
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public ByteBuf copy(int index, int length) {
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checkIndex0(index, length);
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return unwrap().copy(idx(index), length);
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}
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@Override
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public ByteBuf slice(int index, int length) {
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checkIndex0(index, length);
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return unwrap().slice(idx(index), length);
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}
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@Override
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public ByteBuf getBytes(int index, ByteBuf dst, int dstIndex, int length) {
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checkIndex0(index, length);
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unwrap().getBytes(idx(index), dst, dstIndex, length);
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return this;
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}
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@Override
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public ByteBuf getBytes(int index, byte[] dst, int dstIndex, int length) {
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checkIndex0(index, length);
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unwrap().getBytes(idx(index), dst, dstIndex, length);
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return this;
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}
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@Override
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public ByteBuf getBytes(int index, ByteBuffer dst) {
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checkIndex0(index, dst.remaining());
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unwrap().getBytes(idx(index), dst);
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return this;
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}
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@Override
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public ByteBuf setByte(int index, int value) {
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checkIndex0(index, 1);
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unwrap().setByte(idx(index), value);
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return this;
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}
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@Override
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public CharSequence getCharSequence(int index, int length, Charset charset) {
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checkIndex0(index, length);
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return unwrap().getCharSequence(idx(index), length, charset);
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}
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@Override
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protected void _setByte(int index, int value) {
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unwrap().setByte(idx(index), value);
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}
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@Override
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public ByteBuf setShort(int index, int value) {
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checkIndex0(index, 2);
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unwrap().setShort(idx(index), value);
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return this;
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}
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@Override
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protected void _setShort(int index, int value) {
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unwrap().setShort(idx(index), value);
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}
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@Override
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public ByteBuf setShortLE(int index, int value) {
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checkIndex0(index, 2);
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unwrap().setShortLE(idx(index), value);
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return this;
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}
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@Override
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protected void _setShortLE(int index, int value) {
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unwrap().setShortLE(idx(index), value);
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}
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@Override
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public ByteBuf setMedium(int index, int value) {
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checkIndex0(index, 3);
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unwrap().setMedium(idx(index), value);
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return this;
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}
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@Override
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protected void _setMedium(int index, int value) {
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unwrap().setMedium(idx(index), value);
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}
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@Override
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public ByteBuf setMediumLE(int index, int value) {
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checkIndex0(index, 3);
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unwrap().setMediumLE(idx(index), value);
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return this;
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}
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@Override
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protected void _setMediumLE(int index, int value) {
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unwrap().setMediumLE(idx(index), value);
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}
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@Override
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public ByteBuf setInt(int index, int value) {
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checkIndex0(index, 4);
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unwrap().setInt(idx(index), value);
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return this;
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}
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@Override
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protected void _setInt(int index, int value) {
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unwrap().setInt(idx(index), value);
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}
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@Override
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public ByteBuf setIntLE(int index, int value) {
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checkIndex0(index, 4);
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unwrap().setIntLE(idx(index), value);
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return this;
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}
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@Override
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protected void _setIntLE(int index, int value) {
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unwrap().setIntLE(idx(index), value);
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}
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@Override
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public ByteBuf setLong(int index, long value) {
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checkIndex0(index, 8);
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unwrap().setLong(idx(index), value);
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return this;
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}
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@Override
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protected void _setLong(int index, long value) {
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unwrap().setLong(idx(index), value);
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}
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@Override
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public ByteBuf setLongLE(int index, long value) {
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checkIndex0(index, 8);
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unwrap().setLongLE(idx(index), value);
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return this;
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}
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@Override
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protected void _setLongLE(int index, long value) {
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unwrap().setLongLE(idx(index), value);
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}
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@Override
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public ByteBuf setBytes(int index, byte[] src, int srcIndex, int length) {
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checkIndex0(index, length);
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unwrap().setBytes(idx(index), src, srcIndex, length);
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return this;
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}
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@Override
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public ByteBuf setBytes(int index, ByteBuf src, int srcIndex, int length) {
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checkIndex0(index, length);
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unwrap().setBytes(idx(index), src, srcIndex, length);
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return this;
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}
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@Override
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public ByteBuf setBytes(int index, ByteBuffer src) {
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checkIndex0(index, src.remaining());
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unwrap().setBytes(idx(index), src);
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return this;
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}
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@Override
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public ByteBuf getBytes(int index, OutputStream out, int length) throws IOException {
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checkIndex0(index, length);
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unwrap().getBytes(idx(index), out, length);
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return this;
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}
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@Override
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public int getBytes(int index, GatheringByteChannel out, int length) throws IOException {
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checkIndex0(index, length);
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return unwrap().getBytes(idx(index), out, length);
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}
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@Override
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public int getBytes(int index, FileChannel out, long position, int length) throws IOException {
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checkIndex0(index, length);
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return unwrap().getBytes(idx(index), out, position, length);
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}
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@Override
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public int setBytes(int index, InputStream in, int length) throws IOException {
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checkIndex0(index, length);
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return unwrap().setBytes(idx(index), in, length);
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}
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@Override
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public int setBytes(int index, ScatteringByteChannel in, int length) throws IOException {
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checkIndex0(index, length);
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return unwrap().setBytes(idx(index), in, length);
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}
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@Override
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public int setBytes(int index, FileChannel in, long position, int length) throws IOException {
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checkIndex0(index, length);
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return unwrap().setBytes(idx(index), in, position, length);
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}
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@Override
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public int nioBufferCount() {
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return unwrap().nioBufferCount();
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}
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@Override
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public ByteBuffer nioBuffer(int index, int length) {
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checkIndex0(index, length);
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return unwrap().nioBuffer(idx(index), length);
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}
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@Override
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public ByteBuffer[] nioBuffers(int index, int length) {
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checkIndex0(index, length);
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return unwrap().nioBuffers(idx(index), length);
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}
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@Override
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public int forEachByte(int index, int length, ByteProcessor processor) {
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checkIndex0(index, length);
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int ret = unwrap().forEachByte(idx(index), length, processor);
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if (ret >= adjustment) {
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return ret - adjustment;
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} else {
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return -1;
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}
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}
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@Override
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public int forEachByteDesc(int index, int length, ByteProcessor processor) {
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checkIndex0(index, length);
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int ret = unwrap().forEachByteDesc(idx(index), length, processor);
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if (ret >= adjustment) {
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return ret - adjustment;
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} else {
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return -1;
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}
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}
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/**
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* Returns the index with the needed adjustment.
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*/
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final int idx(int index) {
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return index + adjustment;
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}
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static void checkSliceOutOfBounds(int index, int length, ByteBuf buffer) {
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if (isOutOfBounds(index, length, buffer.capacity())) {
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throw new IndexOutOfBoundsException(buffer + ".slice(" + index + ", " + length + ')');
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}
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}
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}
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