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_CHAR_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_DOUBLE_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_DOUBLE_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_FLOAT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_FLOAT_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_INT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_LONG_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_SHORT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.unsafe;
  
  import org.apache.datasketches.memory.WritableMemory;
  
  /**
   * Implementation of {@link WritableMemory} for native endian byte order.
   * @author Roman Leventov
   * @author Lee Rhodes
   */
  @SuppressWarnings("restriction")
  abstract class NativeWritableMemoryImpl extends BaseWritableMemoryImpl {
  
    //Pass-through constructor
    NativeWritableMemoryImpl() { }
  
    ///PRIMITIVE getX() and getXArray()
    @Override
    public char getChar(final long offsetBytes) {
      return getNativeOrderedChar(offsetBytes);
    }
  
    @Override
    public void getCharArray(final long offsetBytes, final char[] dstArray, final int dstOffsetChars,
        final int lengthChars) {
      final long copyBytes = ((long) lengthChars) << CHAR_SHIFT;
      checkValidAndBounds(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(dstOffsetChars, lengthChars, dstArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          dstArray,
          ARRAY_CHAR_BASE_OFFSET + (((long) dstOffsetChars) << CHAR_SHIFT),
          copyBytes);
    }
  
    @Override
    public double getDouble(final long offsetBytes) {
      checkValidAndBounds(offsetBytes, ARRAY_DOUBLE_INDEX_SCALE);
      return unsafe.getDouble(getUnsafeObject(), getCumulativeOffset(offsetBytes));
    }
  
    @Override
    public void getDoubleArray(final long offsetBytes, final double[] dstArray,
        final int dstOffsetDoubles, final int lengthDoubles) {
      final long copyBytes = ((long) lengthDoubles) << DOUBLE_SHIFT;
      checkValidAndBounds(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(dstOffsetDoubles, lengthDoubles, dstArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          dstArray,
          ARRAY_DOUBLE_BASE_OFFSET + (((long) dstOffsetDoubles) << DOUBLE_SHIFT),
          copyBytes);
    }
  
    @Override
    public float getFloat(final long offsetBytes) {
      checkValidAndBounds(offsetBytes, ARRAY_FLOAT_INDEX_SCALE);
      return unsafe.getFloat(getUnsafeObject(), getCumulativeOffset(offsetBytes));
    }
  
    @Override
    public void getFloatArray(final long offsetBytes, final float[] dstArray,
        final int dstOffsetFloats, final int lengthFloats) {
      final long copyBytes = ((long) lengthFloats) << FLOAT_SHIFT;
      checkValidAndBounds(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(dstOffsetFloats, lengthFloats, dstArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          dstArray,
          ARRAY_FLOAT_BASE_OFFSET + (((long) dstOffsetFloats) << FLOAT_SHIFT),
          copyBytes);
    }
  
    @Override
    public int getInt(final long offsetBytes) {
      return getNativeOrderedInt(offsetBytes);
    }
  
    @Override
    public void getIntArray(final long offsetBytes, final int[] dstArray, final int dstOffsetInts,
        final int lengthInts) {
      final long copyBytes = ((long) lengthInts) << INT_SHIFT;
      checkValidAndBounds(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(dstOffsetInts, lengthInts, dstArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          dstArray,
          ARRAY_INT_BASE_OFFSET + (((long) dstOffsetInts) << INT_SHIFT),
          copyBytes);
    }
  
    @Override
    public long getLong(final long offsetBytes) {
      return getNativeOrderedLong(offsetBytes);
    }
  
    @Override
    public void getLongArray(final long offsetBytes, final long[] dstArray,
        final int dstOffsetLongs, final int lengthLongs) {
      final long copyBytes = ((long) lengthLongs) << LONG_SHIFT;
      checkValidAndBounds(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(dstOffsetLongs, lengthLongs, dstArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          dstArray,
          ARRAY_LONG_BASE_OFFSET + (((long) dstOffsetLongs) << LONG_SHIFT),
          copyBytes);
    }
  
    @Override
    public short getShort(final long offsetBytes) {
      return getNativeOrderedShort(offsetBytes);
    }
  
    @Override
    public void getShortArray(final long offsetBytes, final short[] dstArray,
        final int dstOffsetShorts, final int lengthShorts) {
      final long copyBytes = ((long) lengthShorts) << SHORT_SHIFT;
      checkValidAndBounds(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(dstOffsetShorts, lengthShorts, dstArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          dstArray,
          ARRAY_SHORT_BASE_OFFSET + (((long) dstOffsetShorts) << SHORT_SHIFT),
          copyBytes);
    }
  
    //PRIMITIVE putX() and putXArray() implementations
    @Override
    public void putChar(final long offsetBytes, final char value) {
      putNativeOrderedChar(offsetBytes, value);
    }
  
    @Override
    public void putCharArray(final long offsetBytes, final char[] srcArray,
        final int srcOffsetChars, final int lengthChars) {
      final long copyBytes = ((long) lengthChars) << CHAR_SHIFT;
      checkValidAndBoundsForWrite(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(srcOffsetChars, lengthChars, srcArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          srcArray,
          ARRAY_CHAR_BASE_OFFSET + (((long) srcOffsetChars) << CHAR_SHIFT),
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          copyBytes
      );
    }
  
    @Override
    public void putDouble(final long offsetBytes, final double value) {
      checkValidAndBoundsForWrite(offsetBytes, ARRAY_DOUBLE_INDEX_SCALE);
      unsafe.putDouble(getUnsafeObject(), getCumulativeOffset(offsetBytes), value);
    }
  
    @Override
    public void putDoubleArray(final long offsetBytes, final double[] srcArray,
        final int srcOffsetDoubles, final int lengthDoubles) {
      final long copyBytes = ((long) lengthDoubles) << DOUBLE_SHIFT;
      checkValidAndBoundsForWrite(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(srcOffsetDoubles, lengthDoubles, srcArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          srcArray,
          ARRAY_DOUBLE_BASE_OFFSET + (((long) srcOffsetDoubles) << DOUBLE_SHIFT),
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          copyBytes
      );
    }
  
    @Override
    public void putFloat(final long offsetBytes, final float value) {
      checkValidAndBoundsForWrite(offsetBytes, ARRAY_FLOAT_INDEX_SCALE);
      unsafe.putFloat(getUnsafeObject(), getCumulativeOffset(offsetBytes), value);
    }
  
    @Override
    public void putFloatArray(final long offsetBytes, final float[] srcArray,
        final int srcOffsetFloats, final int lengthFloats) {
      final long copyBytes = ((long) lengthFloats) << FLOAT_SHIFT;
      checkValidAndBoundsForWrite(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(srcOffsetFloats, lengthFloats, srcArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          srcArray,
          ARRAY_FLOAT_BASE_OFFSET + (((long) srcOffsetFloats) << FLOAT_SHIFT),
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          copyBytes
      );
    }
  
    @Override
    public void putInt(final long offsetBytes, final int value) {
      putNativeOrderedInt(offsetBytes, value);
    }
  
    @Override
    public void putIntArray(final long offsetBytes, final int[] srcArray, final int srcOffsetInts,
        final int lengthInts) {
      final long copyBytes = ((long) lengthInts) << INT_SHIFT;
      checkValidAndBoundsForWrite(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(srcOffsetInts, lengthInts, srcArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          srcArray,
          ARRAY_INT_BASE_OFFSET + (((long) srcOffsetInts) << INT_SHIFT),
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          copyBytes
      );
    }
  
    @Override
    public void putLong(final long offsetBytes, final long value) {
      putNativeOrderedLong(offsetBytes, value);
    }
  
    @Override
    public void putLongArray(final long offsetBytes, final long[] srcArray, final int srcOffsetLongs,
        final int lengthLongs) {
      final long copyBytes = ((long) lengthLongs) << LONG_SHIFT;
      checkValidAndBoundsForWrite(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(srcOffsetLongs, lengthLongs, srcArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          srcArray,
          ARRAY_LONG_BASE_OFFSET + (((long) srcOffsetLongs) << LONG_SHIFT),
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          copyBytes
      );
    }
  
    @Override
    public void putShort(final long offsetBytes, final short value) {
      putNativeOrderedShort(offsetBytes, value);
    }
  
    @Override
    public void putShortArray(final long offsetBytes, final short[] srcArray,
        final int srcOffsetShorts, final int lengthShorts) {
      final long copyBytes = ((long) lengthShorts) << SHORT_SHIFT;
      checkValidAndBoundsForWrite(offsetBytes, copyBytes);
      ResourceImpl.checkBounds(srcOffsetShorts, lengthShorts, srcArray.length);
      CompareAndCopy.copyMemoryCheckingDifferentObject(
          srcArray,
          ARRAY_SHORT_BASE_OFFSET + (((long) srcOffsetShorts) << SHORT_SHIFT),
          getUnsafeObject(),
          getCumulativeOffset(offsetBytes),
          copyBytes
      );
    }
  
  }
  