Annotate return value for consumers

ppy · May 27, 2022 · 1f72704 · 1f72704
1 parent 2233327
commit 1f72704
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/osu.Framework/Extensions/ObjectExtensions/ObjectExtensions.cs b/osu.Framework/Extensions/ObjectExtensions/ObjectExtensions.cs
@@ -4,6 +4,7 @@
 #nullable enable
 
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 
 namespace osu.Framework.Extensions.ObjectExtensions
 {
@@ -31,11 +32,11 @@ public static T AsNonNull<T>(this T? obj)
         /// <summary>
         /// If the given object is null.
         /// </summary>
-        public static bool IsNull<T>(this T obj) => ReferenceEquals(obj, null);
+        public static bool IsNull<T>([NotNullWhen(false)] this T obj) => ReferenceEquals(obj, null);
 
         /// <summary>
         /// <c>true</c> if the given object is not null, <c>false</c> otherwise.
         /// </summary>
-        public static bool IsNotNull<T>(this T obj) => !ReferenceEquals(obj, null);
+        public static bool IsNotNull<T>([NotNullWhen(true)] this T obj) => !ReferenceEquals(obj, null);
     }
 }