Implement Termination for Option<T: Termination>

rust-lang · May 31, 2019 · 24c1b73 · 24c1b73
1 parent 02f5786
commit 24c1b73
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/libstd/process.rs b/src/libstd/process.rs
@@ -1625,6 +1625,16 @@ impl<E: fmt::Debug> Termination for Result<(), E> {
     }
 }
 
+#[unstable(feature = "termination_trait_lib", issue = "43301")]
+impl<T: Termination> Termination for Option<T> {
+    fn report(self) -> i32 {
+        match self {
+            Some(v) => v.report(),
+            None => 1,
+        }
+    }
+}
+
 #[unstable(feature = "termination_trait_lib", issue = "43301")]
 impl Termination for ! {
     fn report(self) -> i32 { self }