pub struct ZlibByteIter<'s> {
  pub(crate) current: &'s [u8],
  pub(crate) idat_iter: IdatIter<'s>,
  #[cfg(not(feature = "png_skip_adler_checks"))]
  pub(crate) adler: u32,
}

impl<'s> ZlibByteIter<'s> {
  fn from_current_and_iter(current: &'s [u8], idat_iter: IdatIter<'s>) -> Self {
    #[cfg(not(feature = "png_skip_adler_checks"))]
    {
      Self { current, idat_iter, adler: 1 }
    }
    #[cfg(feature = "png_skip_adler_checks")]
    {
      Self { current, idat_iter }
    }
  }
}