use moeval::{Environment, Evaluator};

fn main() {
    let mut env = Environment::new();

    let script = r#"
    fn fib(n) {
        if n <= 0 {
            return 0;
        }
        if n <= 2 {
            return 1;
        }

        return fib(n-1) - fib(n-2);
    }

    let sum = 0;
    for i in 0..=10 {
        sum += fib(i);
    }

    return sum;
    "#;

    let retval = Evaluator::eval_script(script, env).unwrap();

    println!("ret: {:?}", ret); 
    // should output: 
    // ret: Some(143)
}

for i in 0..=10 {}

if condition {} else {}