How to use

arraycopyCheckBounds

method

in

java.lang.System

private static void arraycopy(long[] src, int srcPos, long[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 3);
}

private static void arraycopy(byte[] src, int srcPos, byte[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 0);
}

private static void arraycopy(char[] src, int srcPos, char[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 1);
}

private static void arraycopy(double[] src, int srcPos, double[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 3);
}

private static void arraycopy(float[] src, int srcPos, float[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 2);
}

private static void arraycopy(int[] src, int srcPos, int[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 2);
}

private static void arraycopy(short[] src, int srcPos, short[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 1);
}

private static void arraycopy(boolean[] src, int srcPos, boolean[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 0);
}

private static void arraycopy(Object[] src, int srcPos, Object[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  if (length > 0) {
    // TODO: Use arraycopyFast() if src.class and dst.class have same dimensionality and (src instanceof dst)
    int i = 0;
    try {
      // Check if this is a forward or backwards arraycopy
      if (src != dst || srcPos > dstPos || srcPos + length <= dstPos) {
        for (i = 0; i < length; ++i) {
          dst[dstPos + i] = src[srcPos + i];
        }
      } else {
        for (i = length - 1; i >= 0; --i) {
          dst[dstPos + i] = src[srcPos + i];
        }
      }
    } catch (ArrayStoreException e) {
      // Throw a new one with a more descriptive message.
      Class<?> srcElemClass = src[i + srcPos].getClass();
      String srcElemTypeName = srcElemClass.isArray() 
                  ? srcElemClass.getCanonicalName() : srcElemClass.getName();
      throw new ArrayStoreException(String.format(
          "source[%d] of type %s cannot be stored in destination array of type %s",
          i + srcPos, srcElemTypeName, dst.getClass().getCanonicalName()));
    }
  }
}

private static void arraycopy(byte[] src, int srcPos, byte[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 0);
}

private static void arraycopy(char[] src, int srcPos, char[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 1);
}

private static void arraycopy(double[] src, int srcPos, double[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 3);
}

private static void arraycopy(float[] src, int srcPos, float[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 2);
}

private static void arraycopy(boolean[] src, int srcPos, boolean[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 0);
}

private static void arraycopy(double[] src, int srcPos, double[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 3);
}

private static void arraycopy(long[] src, int srcPos, long[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 3);
}

private static void arraycopy(char[] src, int srcPos, char[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 1);
}

private static void arraycopy(float[] src, int srcPos, float[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 2);
}

private static void arraycopy(int[] src, int srcPos, int[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 2);
}

private static void arraycopy(char[] src, int srcPos, char[] dst, int dstPos, int length) {
  arraycopyCheckBounds(src.length, srcPos, dst.length, dstPos, length);
  arraycopyFast(src, srcPos, dst, dstPos, length, 1);
}