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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
* Copyright 2014 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:
*
*   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.netty.buffer;

import io.netty.util.internal.PlatformDependent;

import java.nio.ByteOrder;

/**
 * Special {@link SwappedByteBuf} for {@link ByteBuf}s that are backed by a {@code memoryAddress}.
 */
final class UnsafeDirectSwappedByteBuf extends SwappedByteBuf {
    private static final boolean NATIVE_ORDER = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN;
    private final boolean nativeByteOrder;
    private final AbstractByteBuf wrapped;

    UnsafeDirectSwappedByteBuf(AbstractByteBuf buf) {
        super(buf);
        wrapped = buf;
        nativeByteOrder = NATIVE_ORDER == (order() == ByteOrder.BIG_ENDIAN);
    }

    private long addr(int index) {
        // We need to call wrapped.memoryAddress() everytime and NOT cache it as it may change if the buffer expand.
        // See:
        // - https://github.com/netty/netty/issues/2587
        // - https://github.com/netty/netty/issues/2580
        return wrapped.memoryAddress() + index;
    }

    @Override
    public long getLong(int index) {
        wrapped.checkIndex(index, 8);
        long v = PlatformDependent.getLong(addr(index));
        return nativeByteOrder? v : Long.reverseBytes(v);
    }

    @Override
    public float getFloat(int index) {
        return Float.intBitsToFloat(getInt(index));
    }

    @Override
    public double getDouble(int index) {
        return Double.longBitsToDouble(getLong(index));
    }

    @Override
    public char getChar(int index) {
        return (char) getShort(index);
    }

    @Override
    public long getUnsignedInt(int index) {
        return getInt(index) & 0xFFFFFFFFL;
    }

    @Override
    public int getInt(int index) {
        wrapped.checkIndex(index, 4);
        int v = PlatformDependent.getInt(addr(index));
        return nativeByteOrder? v : Integer.reverseBytes(v);
    }

    @Override
    public int getUnsignedShort(int index) {
        return getShort(index) & 0xFFFF;
    }

    @Override
    public short getShort(int index) {
        wrapped.checkIndex(index, 2);
        short v = PlatformDependent.getShort(addr(index));
        return nativeByteOrder? v : Short.reverseBytes(v);
    }

    @Override
    public ByteBuf setShort(int index, int value) {
        wrapped.checkIndex(index, 2);
        _setShort(index, value);
        return this;
    }

    @Override
    public ByteBuf setInt(int index, int value) {
        wrapped.checkIndex(index, 4);
        _setInt(index, value);
        return this;
    }

    @Override
    public ByteBuf setLong(int index, long value) {
        wrapped.checkIndex(index, 8);
        _setLong(index, value);
        return this;
    }

    @Override
    public ByteBuf setChar(int index, int value) {
        setShort(index, value);
        return this;
    }

    @Override
    public ByteBuf setFloat(int index, float value) {
        setInt(index, Float.floatToRawIntBits(value));
        return this;
    }

    @Override
    public ByteBuf setDouble(int index, double value) {
        setLong(index, Double.doubleToRawLongBits(value));
        return this;
    }

    @Override
    public ByteBuf writeShort(int value) {
        wrapped.ensureAccessible();
        wrapped.ensureWritable(2);
        _setShort(wrapped.writerIndex, value);
        wrapped.writerIndex += 2;
        return this;
    }

    @Override
    public ByteBuf writeInt(int value) {
        wrapped.ensureAccessible();
        wrapped.ensureWritable(4);
        _setInt(wrapped.writerIndex, value);
        wrapped.writerIndex += 4;
        return this;
    }

    @Override
    public ByteBuf writeLong(long value) {
        wrapped.ensureAccessible();
        wrapped.ensureWritable(8);
        _setLong(wrapped.writerIndex, value);
        wrapped.writerIndex += 8;
        return this;
    }

    @Override
    public ByteBuf writeChar(int value) {
        writeShort(value);
        return this;
    }

    @Override
    public ByteBuf writeFloat(float value) {
        writeInt(Float.floatToRawIntBits(value));
        return this;
    }

    @Override
    public ByteBuf writeDouble(double value) {
        writeLong(Double.doubleToRawLongBits(value));
        return this;
    }

    private void _setShort(int index, int value) {
        PlatformDependent.putShort(addr(index), nativeByteOrder ? (short) value : Short.reverseBytes((short) value));
    }

    private void _setInt(int index, int value) {
        PlatformDependent.putInt(addr(index), nativeByteOrder ? value : Integer.reverseBytes(value));
    }

    private void _setLong(int index, long value) {
        PlatformDependent.putLong(addr(index), nativeByteOrder ? value : Long.reverseBytes(value));
    }
}