Vendor things

third-party/vendor/generator/examples/send.rs

@@ -0,0 +1,33 @@
+#![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}");
+    }
+}