split this out into a separate module too

1 files changed, 14 insertions, 0 deletions

diff --git a/src/guard.rs b/src/guard.rs
new file mode 100644
index 0000000..75a28aa
--- /dev/null
+++ b/src/guard.rs
@@ -0,0 +1,14 @@
+pub fn guard<T> (finally: ~fn (), body: &fn () -> T) -> T {
+    let _guard = Guard { finally: finally };
+    body()
+}
+
+struct Guard {
+    priv finally: ~fn (),
+}
+
+impl Drop for Guard {
+    fn finalize (&self) {
+        (self.finally)();
+    }
+}