Function `assert_full_parse`

fn assert_full_parse<'i, I: 'i, O, E>(result: IResult<&'i [I], O, E>) -> IResult<&'i [I], O, Error<&'i [I]>>
where
    Error<&'i [I]>: From<E>

If the input result indicates a succesful parse, but there is data left, return an Error::Partial instead.