172 lines
5.2 KiB
Java
172 lines
5.2 KiB
Java
/*
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* Copyright 2015 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.net5.buffer;
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import io.net5.util.internal.PlatformDependent;
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import java.nio.ByteOrder;
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import static io.net5.util.internal.PlatformDependent.BIG_ENDIAN_NATIVE_ORDER;
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/**
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* Special {@link SwappedByteBuf} for {@link ByteBuf}s that is using unsafe.
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*/
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abstract class AbstractUnsafeSwappedByteBuf extends SwappedByteBuf {
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private final boolean nativeByteOrder;
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private final AbstractByteBuf wrapped;
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AbstractUnsafeSwappedByteBuf(AbstractByteBuf buf) {
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super(buf);
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assert PlatformDependent.isUnaligned();
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wrapped = buf;
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nativeByteOrder = BIG_ENDIAN_NATIVE_ORDER == (order() == ByteOrder.BIG_ENDIAN);
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}
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@Override
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public final long getLong(int index) {
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wrapped.checkIndex(index, 8);
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long v = _getLong(wrapped, index);
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return nativeByteOrder ? v : Long.reverseBytes(v);
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}
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@Override
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public final float getFloat(int index) {
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return Float.intBitsToFloat(getInt(index));
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}
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@Override
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public final double getDouble(int index) {
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return Double.longBitsToDouble(getLong(index));
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}
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@Override
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public final char getChar(int index) {
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return (char) getShort(index);
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}
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@Override
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public final long getUnsignedInt(int index) {
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return getInt(index) & 0xFFFFFFFFL;
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}
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@Override
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public final int getInt(int index) {
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wrapped.checkIndex(index, 4);
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int v = _getInt(wrapped, index);
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return nativeByteOrder ? v : Integer.reverseBytes(v);
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}
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@Override
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public final int getUnsignedShort(int index) {
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return getShort(index) & 0xFFFF;
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}
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@Override
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public final short getShort(int index) {
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wrapped.checkIndex(index, 2);
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short v = _getShort(wrapped, index);
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return nativeByteOrder ? v : Short.reverseBytes(v);
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}
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@Override
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public final ByteBuf setShort(int index, int value) {
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wrapped.checkIndex(index, 2);
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_setShort(wrapped, index, nativeByteOrder ? (short) value : Short.reverseBytes((short) value));
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return this;
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}
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@Override
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public final ByteBuf setInt(int index, int value) {
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wrapped.checkIndex(index, 4);
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_setInt(wrapped, index, nativeByteOrder ? value : Integer.reverseBytes(value));
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return this;
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}
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@Override
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public final ByteBuf setLong(int index, long value) {
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wrapped.checkIndex(index, 8);
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_setLong(wrapped, index, nativeByteOrder ? value : Long.reverseBytes(value));
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return this;
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}
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@Override
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public final ByteBuf setChar(int index, int value) {
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setShort(index, value);
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return this;
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}
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@Override
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public final ByteBuf setFloat(int index, float value) {
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setInt(index, Float.floatToRawIntBits(value));
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return this;
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}
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@Override
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public final ByteBuf setDouble(int index, double value) {
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setLong(index, Double.doubleToRawLongBits(value));
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return this;
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}
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@Override
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public final ByteBuf writeShort(int value) {
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wrapped.ensureWritable0(2);
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_setShort(wrapped, wrapped.writerIndex, nativeByteOrder ? (short) value : Short.reverseBytes((short) value));
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wrapped.writerIndex += 2;
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return this;
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}
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@Override
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public final ByteBuf writeInt(int value) {
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wrapped.ensureWritable0(4);
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_setInt(wrapped, wrapped.writerIndex, nativeByteOrder ? value : Integer.reverseBytes(value));
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wrapped.writerIndex += 4;
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return this;
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}
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@Override
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public final ByteBuf writeLong(long value) {
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wrapped.ensureWritable0(8);
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_setLong(wrapped, wrapped.writerIndex, nativeByteOrder ? value : Long.reverseBytes(value));
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wrapped.writerIndex += 8;
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return this;
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}
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@Override
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public final ByteBuf writeChar(int value) {
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writeShort(value);
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return this;
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}
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@Override
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public final ByteBuf writeFloat(float value) {
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writeInt(Float.floatToRawIntBits(value));
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return this;
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}
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@Override
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public final ByteBuf writeDouble(double value) {
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writeLong(Double.doubleToRawLongBits(value));
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return this;
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}
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protected abstract short _getShort(AbstractByteBuf wrapped, int index);
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protected abstract int _getInt(AbstractByteBuf wrapped, int index);
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protected abstract long _getLong(AbstractByteBuf wrapped, int index);
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protected abstract void _setShort(AbstractByteBuf wrapped, int index, short value);
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protected abstract void _setInt(AbstractByteBuf wrapped, int index, int value);
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protected abstract void _setLong(AbstractByteBuf wrapped, int index, long value);
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}
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