try {
        return input.readFloat();
      } catch (IOException e) {
        throw new IllegalStateException(e);
      }
    }

    @Override
    public double readDouble() {
      try {
        return input.readDouble();
      } catch (IOException e) {
        throw new IllegalStateException(e);
      }
    }

    @Override
    @CheckForNull
    public String readLine() {
      try {