use std::io::{self, Write};

fn main() {
    let mut input = String::new();

    println!("MAL -- REPL");

    loop {
        print!("> ");
        io::stdout().flush().expect("failed to write to stdout");

        let bytes_read = io::stdin()
            .read_line(&mut input)
            .expect("failed to read from stdin");

        if bytes_read == 0 {
            break;
        }

        let ast = read(&input);
        let res = eval(&ast);

        println!("{res}");

        input.clear();
    }
}

fn read(input: &str) -> String {
    input.to_owned()
}

fn eval(input: &str) -> String {
    input.to_owned()
}