1 files changed, 7 insertions, 1 deletions
diff --git a/include/clang/AST/DeclObjC.h b/include/clang/AST/DeclObjC.h
index ad9b5a26b7c86..f5098f06a9f64 100644
--- a/include/clang/AST/DeclObjC.h
+++ b/include/clang/AST/DeclObjC.h
@@ -394,7 +394,7 @@ public:
 
   /// createImplicitParams - Used to lazily create the self and cmd
   /// implict parameters. This must be called prior to using getSelfDecl()
-  /// or getCmdDecl(). The call is ignored if the implicit paramters
+  /// or getCmdDecl(). The call is ignored if the implicit parameters
   /// have already been created.
   void createImplicitParams(ASTContext &Context, const ObjCInterfaceDecl *ID);
 
@@ -463,6 +463,9 @@ public:
   ImplementationControl getImplementationControl() const {
     return ImplementationControl(DeclImplementation);
   }
+  bool isOptional() const {
+    return getImplementationControl() == Optional;
+  }
 
   /// Returns true if this specific method declaration is marked with the
   /// designated initializer attribute.
@@ -870,6 +873,9 @@ public:
   PropertyControl getPropertyImplementation() const {
     return PropertyControl(PropertyImplementation);
   }
+  bool isOptional() const {
+    return getPropertyImplementation() == PropertyControl::Optional;
+  }
 
   void setPropertyIvarDecl(ObjCIvarDecl *Ivar) {
     PropertyIvarDecl = Ivar;