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@@ -0,0 +1,45 @@
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+// 主方法模拟
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+struct Main {
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+ spread_list: Vec<f64>,
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+}
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+impl Main {
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+ fn new() -> Main {
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+ Main {
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+ spread_list: Vec::new(),
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+ }
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+ }
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+
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+ // 钩子演示方法
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+ fn hook_func_demo(&mut self, depth_spread: &f64) {
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+ self.spread_list.push(depth_spread.clone());
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+ }
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+}
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+
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+// 中间键模拟
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+struct MiddleWare {
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+ deep_spread: f64,
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+}
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+impl MiddleWare {
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+ fn new(spread: f64) -> MiddleWare {
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+ MiddleWare {
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+ deep_spread: spread,
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+ }
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+ }
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+
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+ fn call_hook<F: FnMut(&f64)>(&self, mut hook: F) {
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+ // 中间键去将钩子再传给接口
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+ hook(&self.deep_spread);
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+ }
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+}
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+
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+// 主逻辑->中间键的钩子使用演示
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+#[tokio::test]
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+async fn test_hook() {
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+ let mut a = Main::new();
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+ let b = MiddleWare::new(0.1);
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+
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+ let hook = |deep_spread: &f64| a.hook_func_demo(deep_spread);
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+ b.call_hook(hook);
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+
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+ println!("{:?}", a.spread_list);
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+}
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