use rustyline::error::ReadlineError;

fn main() -> anyhow::Result<()> {
    let mut rl = rustyline::DefaultEditor::new()?;
    loop {
        match rl.readline("> ") {
            Ok(line) => {
                eval(&line);
                rl.add_history_entry(line)?;
            }
            Err(ReadlineError::Eof) | Err(ReadlineError::Interrupted) => break Ok(()),
            Err(e) => break Err(e.into()),
        }
    }
}

fn eval(input: &str) {
    println!("{input}");
}