use nom::{branch::alt, bytes::complete::tag, combinator::map, IResult};

use crate::prob7::Instructions::{Cd, Dir, Ls};

enum Instructions {
    Ls,
    Cd,
    Dir,
}

fn parse_instruction(i: &str) -> IResult<&str, Instructions> {
    alt((
        map(tag("ls"), |_| Ls),
        map(tag("cd"), |_| Cd),
        map(tag("dir"), |_| Dir),
    ))(i)
}