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#![allow(deprecated)]
use generator::{yield_, Gn};
use std::mem;
fn sum(a: u32) -> u32 {
let mut sum = a;
let mut recv: u32;
while sum < 200 {
// println!("sum={} ", sum);
recv = yield_(sum).unwrap();
// println!("recv={}", recv);
sum += recv;
}
sum
}
fn main() {
// we specify the send type is u32
let mut s = Gn::<u32>::new(|| sum(0));
// first start the generator
assert_eq!(s.raw_send(None).unwrap(), 0);
let mut cur = 1;
let mut last = 1;
while !s.is_done() {
// println!("send={}", last);
mem::swap(&mut cur, &mut last);
cur = s.send(cur); // s += cur
// println!("cur={} last={}", cur, last);
println!("{}", cur);
}
}
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