use std::fmt::{Display, Formatter};

pub struct Example {
    pub flags: u64,
}

impl Display for Example {
    // I would like to print out the flags with the str repr
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        // READ  	0x1
        // WRITE 	0x2
        // EXEC 	0x4
        let mut flag_repr = String::new();

        if self.flags & 1 == 1 {
            flag_repr.push('R');
        } else {
            flag_repr.push('-');
        }
        if self.flags & 2 == 2 {
            flag_repr.push('W');
        } else {
            flag_repr.push('-');
        }
        if self.flags & 4 == 4 {
            flag_repr.push('X');
        } else {
            flag_repr.push('-');
        }

        write!(f, "{}", flag_repr)
    }
}

fn main() {
   for x in 0..8 {
       println!("{}", Example{flags:x});
   }
}