code: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF 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 org.apache.datasketches.memory.internal;
  
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_DOUBLE_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_FLOAT_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.unsafe;
  
  import org.apache.datasketches.memory.WritableBuffer;
  
  /**
   * Implementation of {@link WritableBuffer} for non-native endian byte order.
   * @author Roman Leventov
   * @author Lee Rhodes
   */
  @SuppressWarnings("restriction")
  abstract class NonNativeWritableBufferImpl extends BaseWritableBufferImpl {
  
    //Pass-through constructor
    NonNativeWritableBufferImpl(final long capacityBytes) { super(capacityBytes); }
  
    //PRIMITIVE getX() and getXArray()
    @Override
    public char getChar() {
      return Character.reverseBytes(getNativeOrderedChar());
    }
  
    @Override
    public char getChar(final long offsetBytes) {
      return Character.reverseBytes(getNativeOrderedChar(offsetBytes));
    }
  
    @Override
    public void getCharArray(final char[] dstArray, final int dstOffsetChars, final int lengthChars) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthChars) << CHAR_SHIFT;
      incrementAndCheckPositionForRead(pos, copyBytes);
      CompareAndCopy.getNonNativeChars(getUnsafeObject(), getCumulativeOffset(pos), copyBytes,
          dstArray, dstOffsetChars, lengthChars);
    }
  
    @Override
    public double getDouble() {
      final long pos = getPosition();
      incrementAndCheckPositionForRead(pos, ARRAY_DOUBLE_INDEX_SCALE);
      return Double.longBitsToDouble(
          Long.reverseBytes(unsafe.getLong(getUnsafeObject(), getCumulativeOffset(pos))));
    }
  
    @Override
    public double getDouble(final long offsetBytes) {
      checkValidAndBounds(offsetBytes, ARRAY_DOUBLE_INDEX_SCALE);
      return Double.longBitsToDouble(
          Long.reverseBytes(unsafe.getLong(getUnsafeObject(), getCumulativeOffset(offsetBytes))));
    }
  
    @Override
    public void getDoubleArray(final double[] dstArray, final int dstOffsetDoubles,
        final int lengthDoubles) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthDoubles) << DOUBLE_SHIFT;
      incrementAndCheckPositionForRead(pos, copyBytes);
      CompareAndCopy.getNonNativeDoubles(getUnsafeObject(), getCumulativeOffset(pos), copyBytes,
          dstArray, dstOffsetDoubles, lengthDoubles);
    }
  
    @Override
    public float getFloat() {
      final long pos = getPosition();
      incrementAndCheckPositionForRead(pos, ARRAY_FLOAT_INDEX_SCALE);
      return Float.intBitsToFloat(
          Integer.reverseBytes(unsafe.getInt(getUnsafeObject(), getCumulativeOffset(pos))));
    }
  
    @Override
    public float getFloat(final long offsetBytes) {
      checkValidAndBounds(offsetBytes, ARRAY_FLOAT_INDEX_SCALE);
      return Float.intBitsToFloat(
          Integer.reverseBytes(unsafe.getInt(getUnsafeObject(), getCumulativeOffset(offsetBytes))));
    }
  
    @Override
    public void getFloatArray(final float[] dstArray, final int dstOffsetFloats,
        final int lengthFloats) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthFloats) << FLOAT_SHIFT;
      incrementAndCheckPositionForRead(pos, copyBytes);
      CompareAndCopy.getNonNativeFloats(getUnsafeObject(), getCumulativeOffset(pos), copyBytes,
          dstArray, dstOffsetFloats, lengthFloats);
    }
  
    @Override
    public int getInt() {
      return Integer.reverseBytes(getNativeOrderedInt());
    }
  
    @Override
    public int getInt(final long offsetBytes) {
      return Integer.reverseBytes(getNativeOrderedInt(offsetBytes));
    }
  
    @Override
    public void getIntArray(final int[] dstArray, final int dstOffsetInts, final int lengthInts) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthInts) << INT_SHIFT;
      incrementAndCheckPositionForRead(pos, copyBytes);
      CompareAndCopy.getNonNativeInts(getUnsafeObject(), getCumulativeOffset(pos), copyBytes,
          dstArray, dstOffsetInts, lengthInts);
    }
  
    @Override
    public long getLong() {
      return Long.reverseBytes(getNativeOrderedLong());
    }
  
    @Override
    public long getLong(final long offsetBytes) {
      return Long.reverseBytes(getNativeOrderedLong(offsetBytes));
    }
  
    @Override
    public void getLongArray(final long[] dstArray, final int dstOffsetLongs, final int lengthLongs) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthLongs) << LONG_SHIFT;
      incrementAndCheckPositionForRead(pos, copyBytes);
      CompareAndCopy.getNonNativeLongs(getUnsafeObject(), getCumulativeOffset(pos), copyBytes,
          dstArray, dstOffsetLongs, lengthLongs);
    }
  
    @Override
    public short getShort() {
      return Short.reverseBytes(getNativeOrderedShort());
    }
  
    @Override
    public short getShort(final long offsetBytes) {
      return Short.reverseBytes(getNativeOrderedShort(offsetBytes));
    }
  
    @Override
    public void getShortArray(final short[] dstArray, final int dstOffsetShorts,
        final int lengthShorts) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthShorts) << SHORT_SHIFT;
      incrementAndCheckPositionForRead(pos, copyBytes);
      CompareAndCopy.getNonNativeShorts(getUnsafeObject(), getCumulativeOffset(pos), copyBytes,
          dstArray, dstOffsetShorts, lengthShorts);
    }
  
    //PRIMITIVE putX() and putXArray()
    @Override
    public void putChar(final char value) {
      putNativeOrderedChar(Character.reverseBytes(value));
    }
  
    @Override
    public void putChar(final long offsetBytes, final char value) {
      putNativeOrderedChar(offsetBytes, Character.reverseBytes(value));
    }
  
    @Override
    public void putCharArray(final char[] srcArray, final int srcOffsetChars, final int lengthChars) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthChars) << CHAR_SHIFT;
      incrementAndCheckPositionForWrite(pos, copyBytes);
      CompareAndCopy.putNonNativeChars(srcArray, srcOffsetChars, lengthChars, copyBytes,
          getUnsafeObject(), getCumulativeOffset(pos));
    }
  
    @Override
    public void putDouble(final double value) {
      final long pos = getPosition();
      incrementAndCheckPositionForWrite(pos, ARRAY_DOUBLE_INDEX_SCALE);
      unsafe.putLong(getUnsafeObject(), getCumulativeOffset(pos),
          Long.reverseBytes(Double.doubleToRawLongBits(value)));
    }
  
    @Override
    public void putDouble(final long offsetBytes, final double value) {
      checkValidAndBoundsForWrite(offsetBytes, ARRAY_DOUBLE_INDEX_SCALE);
      unsafe.putLong(getUnsafeObject(), getCumulativeOffset(offsetBytes),
          Long.reverseBytes(Double.doubleToRawLongBits(value)));
    }
  
    @Override
    public void putDoubleArray(final double[] srcArray, final int srcOffsetDoubles,
        final int lengthDoubles) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthDoubles) << DOUBLE_SHIFT;
      incrementAndCheckPositionForWrite(pos, copyBytes);
      CompareAndCopy.putNonNativeDoubles(srcArray, srcOffsetDoubles, lengthDoubles, copyBytes,
          getUnsafeObject(), getCumulativeOffset(pos));
    }
  
    @Override
    public void putFloat(final float value) {
      final long pos = getPosition();
      incrementAndCheckPositionForWrite(pos, ARRAY_FLOAT_INDEX_SCALE);
      unsafe.putInt(getUnsafeObject(), getCumulativeOffset(pos),
          Integer.reverseBytes(Float.floatToRawIntBits(value)));
    }
  
    @Override
    public void putFloat(final long offsetBytes, final float value) {
      checkValidAndBoundsForWrite(offsetBytes, ARRAY_FLOAT_INDEX_SCALE);
      unsafe.putInt(getUnsafeObject(), getCumulativeOffset(offsetBytes),
          Integer.reverseBytes(Float.floatToRawIntBits(value)));
    }
  
    @Override
    public void putFloatArray(final float[] srcArray, final int srcOffsetFloats,
        final int lengthFloats) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthFloats) << FLOAT_SHIFT;
      incrementAndCheckPositionForWrite(pos, copyBytes);
      CompareAndCopy.putNonNativeFloats(srcArray, srcOffsetFloats, lengthFloats, copyBytes,
          getUnsafeObject(), getCumulativeOffset(pos));
    }
  
    @Override
    public void putInt(final int value) {
      putNativeOrderedInt(Integer.reverseBytes(value));
    }
  
    @Override
    public void putInt(final long offsetBytes, final int value) {
      putNativeOrderedInt(offsetBytes, Integer.reverseBytes(value));
    }
  
    @Override
    public void putIntArray(final int[] srcArray, final int srcOffsetInts, final int lengthInts) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthInts) << INT_SHIFT;
      incrementAndCheckPositionForWrite(pos, copyBytes);
      CompareAndCopy.putNonNativeInts(srcArray, srcOffsetInts, lengthInts, copyBytes,
          getUnsafeObject(), getCumulativeOffset(pos));
    }
  
    @Override
    public void putLong(final long value) {
      putNativeOrderedLong(Long.reverseBytes(value));
    }
  
    @Override
    public void putLong(final long offsetBytes, final long value) {
      putNativeOrderedLong(offsetBytes, Long.reverseBytes(value));
    }
  
    @Override
    public void putLongArray(final long[] srcArray, final int srcOffsetLongs, final int lengthLongs) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthLongs) << LONG_SHIFT;
      incrementAndCheckPositionForWrite(pos, copyBytes);
      CompareAndCopy.putNonNativeLongs(srcArray, srcOffsetLongs, lengthLongs, copyBytes,
          getUnsafeObject(), getCumulativeOffset(pos));
    }
  
    @Override
    public void putShort(final short value) {
      putNativeOrderedShort(Short.reverseBytes(value));
    }
  
    @Override
    public void putShort(final long offsetBytes, final short value) {
      putNativeOrderedShort(offsetBytes, Short.reverseBytes(value));
    }
  
    @Override
    public void putShortArray(final short[] srcArray, final int srcOffsetShorts,
        final int lengthShorts) {
      final long pos = getPosition();
      final long copyBytes = ((long) lengthShorts) << SHORT_SHIFT;
      incrementAndCheckPositionForWrite(pos, copyBytes);
      CompareAndCopy.putNonNativeShorts(srcArray, srcOffsetShorts, lengthShorts, copyBytes,
          getUnsafeObject(), getCumulativeOffset(pos));
    }
  
  }
  