From 83e5044fd6e5c2a8bccd29f5a8462e7016823aed Mon Sep 17 00:00:00 2001
From: Jonas Maier <>
Date: Tue, 10 Mar 2026 15:00:44 +0100
Subject: defer macro

---
 src/defer.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/defer.rs

(limited to 'src/defer.rs')

diff --git a/src/defer.rs b/src/defer.rs
new file mode 100644
index 0000000..362c7d1
--- /dev/null
+++ b/src/defer.rs
@@ -0,0 +1,16 @@
+pub struct Defer<T: FnOnce()>(pub Option<T>);
+
+impl<T: FnOnce()> Drop for Defer<T> {
+    fn drop(&mut self) {
+        if let Some(f) = self.0.take() {
+            f();
+        }
+    }
+}
+
+#[macro_export]
+macro_rules! defer {
+    ($($x:tt)*) => {
+        let _defer = crate::defer::Defer(Some(move || {$($x)*}));
+    };
+}
-- 
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