rule.rs

fn parse_rule<'a>(input: &'a [u8], num_of_rules: u32) ->nom::IResult<&[u8], [Option<Rule>]>{
    let mut rules = [Option::<Rule>; num_of_rules];
    for i in 0..num_of_rules{
    let yes = le_u32(input);
        if yes == 0{
            rules[i] = None;
            continue;
        }
        else{
            let rule = Rule::parse(input);
            match rule{
                nom::IResult::Done(unparsed_data, decoded_rule) =>{
                    rules[i] = Some(decode_rule)
                },
                nom::IResult::Incomplete(needed) => {
                    return nom::IResult::Incomplete(needed);
                }
                nom::IResult::Error(e) => {
                    return nom::IResult::Error(e);
                },
            }
        }
    }
}