enum Message {
    Quit,
    Move { x: i32, y: i32 },
    Write(String),
    ChangeColor(i32, i32, i32),
}

fn do_match (m : Message) -> i32 {
    match m {
        Message::Quit => 0,
        Message::Move{x,y} => x + y,
        Message::Write(s) =>
			s.parse().unwrap(),
        Message::ChangeColor(r,g,b) => r,
    }
}


fn main() {
    let m = Message::Write("123".to_string());

    let res = do_match(m);

    println! ("Message value: {}", res)
}