pub fn hex_refactor(
input: LocatedSpan<&'_ str>,
) -> IResult<LocatedSpan<&'_ str>, LocatedSpan<&'_ str>, LocatedParseError>
pub fn hex_refactor(
input: LocatedSpan<&'_ str>,
) -> IResult<LocatedSpan<&'_ str>, LocatedSpan<&'_ str>, LocatedParseError>