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