core: impl field::Value for Option<T>

tokio-rs · Sep 21, 2021 · 723563f · 723563f
1 parent 27a2ce9
commit 723563f
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/tracing-core/src/field.rs b/tracing-core/src/field.rs
@@ -519,7 +519,7 @@ impl<T: fmt::Display> fmt::Display for DisplayValue<T> {
 
 impl<T: fmt::Debug> crate::sealed::Sealed for DebugValue<T> {}
 
-impl<T: fmt::Debug> Value for DebugValue<T>
+impl<T> Value for DebugValue<T>
 where
     T: fmt::Debug,
 {
@@ -540,6 +540,16 @@ impl Value for Empty {
     fn record(&self, _: &Field, _: &mut dyn Visit) {}
 }
 
+impl<T: Value> crate::sealed::Sealed for Option<T> {}
+
+impl<T: Value> Value for Option<T> {
+    fn record(&self, key: &Field, visitor: &mut dyn Visit) {
+        if let Some(v) = &self {
+            v.record(key, visitor)
+        }
+    }
+}
+
 // ===== impl Field =====
 
 impl Field {