Added GCM_FINAL Macro to Prevent Subclassing

GameCenterManager classes marked with the GCM_FINAL Macro cannot be subclassed.
nihalahmed · Dec 13, 2015 · ad192af · ad192af
1 parent 04b143f
commit ad192af
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Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/GC Manager/GCMConstants.h b/GC Manager/GCMConstants.h
@@ -9,6 +9,13 @@
 #ifndef GCMConstants_h
 #define GCMConstants_h
 
+#if defined(__has_attribute) && __has_attribute(objc_subclassing_restricted)
+    #define GCM_FINAL __attribute__((objc_subclassing_restricted))
+#else
+    #define GCM_FINAL
+#endif
+
+
 /// Leaderboard sort order. Use this value when submitting new leaderboard scores. This value should match the value set in iTunes Connect for the speicifed leaderboard.
 typedef enum GameCenterSortOrder {
     /// Scores are sorted highest to lowest. Higher scores are on the top of the leaderboard

diff --git a/GC Manager/GCMMultiplayer.h b/GC Manager/GCMMultiplayer.h
@@ -13,7 +13,7 @@
 
 @protocol GameCenterMultiplayerManagerDelegate;
 
-@interface GCMMultiplayer : NSObject <GKMatchmakerViewControllerDelegate, GKMatchDelegate, GKLocalPlayerListener>
+GCM_FINAL @interface GCMMultiplayer : NSObject <GKMatchmakerViewControllerDelegate, GKMatchDelegate, GKLocalPlayerListener>
 
 /// Returns the default instance of the multiplayer manager
 + (GCMMultiplayer *)defaultMultiplayerManager;

diff --git a/GC Manager/GameCenterManager.h b/GC Manager/GameCenterManager.h
@@ -48,7 +48,7 @@
 /// GameCenter Manager helps to manage Game Center in iOS and Mac apps. Report and keep track of high scores, achievements, and challenges for different players. GameCenter Manager also takes care of the heavy lifting - checking internet availability, saving data when offline and uploading it when online, etc.
 @class GameCenterManager;
 @protocol GameCenterManagerDelegate;
-@interface GameCenterManager : NSObject <GKGameCenterControllerDelegate>
+GCM_FINAL @interface GameCenterManager : NSObject <GKGameCenterControllerDelegate>
 
 
 /// Returns the shared instance of GameCenterManager.