public static char[] readLengthPrefixedChars(Decoder decoder) throws IOException {
        int length = decoder.readInt();
        char[] array = new char[length];
        readChars(decoder, array);
        return array;
    }

    public static void readChars(Decoder decoder, char[] array) throws IOException {
        for (int i = 0; i < array.length; i++) {
            array[i] = (char) decoder.readInt();
        }
    }

              return -1;
            }
            readChars++;
            char ch = (char) readChar;
            if (paddingChar != null && paddingChar.charValue() == ch) {
              if (!hitPadding
                  && (readChars == 1 || !alphabet.isValidPaddingStartPosition(readChars - 1))) {
                throw new DecodingException("Padding cannot start at index " + readChars);
              }
              hitPadding = true;

              return -1;
            }
            readChars++;
            char ch = (char) readChar;
            if (paddingChar != null && paddingChar.charValue() == ch) {
              if (!hitPadding
                  && (readChars == 1 || !alphabet.isValidPaddingStartPosition(readChars - 1))) {
                throw new DecodingException("Padding cannot start at index " + readChars);
              }
              hitPadding = true;

  @Override
  short readShort();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readUnsignedShort();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  char readChar();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readInt();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  long readLong();

  @CanIgnoreReturnValue // to skip some bytes

    }


    public void readFully ( byte[] b, int off, int len ) throws IOException {
        this.dis.readFully(b, off, len);
    }


    public char readChar () throws IOException {
        align(2);
        return this.dis.readChar();
    }


    public byte readByte () throws IOException {
        return this.dis.readByte();
    }


    public short readShort () throws IOException {

    override fun mark(readlimit: Int) = inputStream.mark(readlimit)

    override fun reset() = inputStream.reset()

    override fun read(): Int = inputStream.read()

    override fun readChar(): Char = readContext.readInt().toChar()

    override fun readUnsignedByte(): Int = readByte().let {
        require(it >= 0)
        it.toInt()
    }

    override fun readByte(): Byte = readContext.readByte()

  /**
   * Reads a char as specified by {@link DataInputStream#readChar()}, except using little-endian
   * byte order.
   *
   * @return the next two bytes of the input stream, interpreted as a {@code char} in little-endian
   *     byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public char readChar() throws IOException {
    return (char) readUnsignedShort();

  /**
   * Reads a char as specified by {@link DataInputStream#readChar()}, except using little-endian
   * byte order.
   *
   * @return the next two bytes of the input stream, interpreted as a {@code char} in little-endian
   *     byte order
   * @throws IOException if an I/O error occurs
   */
  @CanIgnoreReturnValue // to skip some bytes
  @Override
  public char readChar() throws IOException {
    return (char) readUnsignedShort();

  @Override
  short readShort();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readUnsignedShort();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  char readChar();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  int readInt();

  @CanIgnoreReturnValue // to skip some bytes
  @Override
  long readLong();

  @CanIgnoreReturnValue // to skip some bytes

    assertEquals(false, in.readBoolean());
    assertEquals(100, in.readByte());
    assertEquals(-100, in.readByte());
    assertEquals(200, in.readUnsignedByte());
    assertEquals('\u6100', in.readChar());
    assertEquals(-12150, in.readShort());
    assertEquals(20675, in.readUnsignedShort());
    assertEquals(0xBEBAFECA, in.readInt());
    assertEquals(0xBEBAFECAEFBEADDEL, in.readLong());