Some cleanup, change diagnostic when assigning to

a property which is not lvalue.

llvm-svn: 98848

clang/include/clang/AST/Expr.h

@@ -150,7 +150,6 @@ public:
     LV_InvalidExpression,
     LV_MemberFunction,
     LV_SubObjCPropertySetting,
-    LV_SubObjCPropertyGetterSetting,
     LV_ClassTemporary
   };
   isLvalueResult isLvalue(ASTContext &Ctx) const;
@@ -182,7 +181,6 @@ public:
     MLV_NoSetterProperty,
     MLV_MemberFunction,
     MLV_SubObjCPropertySetting,
-    MLV_SubObjCPropertyGetterSetting,
     MLV_ClassTemporary
   };
   isModifiableLvalueResult isModifiableLvalue(ASTContext &Ctx,

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -1952,11 +1952,7 @@ def ext_integer_complement_complex : Extension<
 def error_nosetter_property_assignment : Error<
   "setter method is needed to assign to object using property" " assignment syntax">;
 def error_no_subobject_property_setting : Error<
-  "cannot assign to a sub-structure of an ivar using property" 
-  " assignment syntax">;
-def error_no_subobject_property_getter_setting : Error<
-  "cannot assign to a sub-structure returned via a getter using property" 
-  " assignment syntax">;
+  "expression is not assignable using property assignment syntax">;
 
 def ext_freestanding_complex : Extension<
   "complex numbers are an extension in a freestanding C99 implementation">;

clang/lib/AST/Expr.cpp

@@ -1104,11 +1104,11 @@ Expr::isLvalueResult Expr::isLvalueInternal(ASTContext &Ctx) const {
     if (m->isArrow())
       return LV_Valid;
     Expr *BaseExp = m->getBase();
-    if (BaseExp->getStmtClass() == ObjCPropertyRefExprClass)
+    if (BaseExp->getStmtClass() == ObjCPropertyRefExprClass ||
+        BaseExp->getStmtClass() == ObjCImplicitSetterGetterRefExprClass)
           return LV_SubObjCPropertySetting;
     return 
-      (BaseExp->getStmtClass() == ObjCImplicitSetterGetterRefExprClass) ?
-       LV_SubObjCPropertyGetterSetting : BaseExp->isLvalue(Ctx);        
+       BaseExp->isLvalue(Ctx);        
   }
   case UnaryOperatorClass:
     if (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Deref)
@@ -1324,8 +1324,6 @@ Expr::isModifiableLvalue(ASTContext &Ctx, SourceLocation *Loc) const {
     return MLV_InvalidExpression;
   case LV_MemberFunction: return MLV_MemberFunction;
   case LV_SubObjCPropertySetting: return MLV_SubObjCPropertySetting;
-  case LV_SubObjCPropertyGetterSetting: 
-    return MLV_SubObjCPropertyGetterSetting;
   case LV_ClassTemporary:
     return MLV_ClassTemporary;
   }

clang/lib/Sema/SemaExpr.cpp

@@ -5790,9 +5790,6 @@ static bool CheckForModifiableLvalue(Expr *E, SourceLocation Loc, Sema &S) {
   case Expr::MLV_SubObjCPropertySetting:
     Diag = diag::error_no_subobject_property_setting;
     break;
-  case Expr::MLV_SubObjCPropertyGetterSetting:
-    Diag = diag::error_no_subobject_property_getter_setting;
-    break;
   }
 
   SourceRange Assign;

clang/test/SemaObjC/property-not-lvalue.m

@@ -15,8 +15,8 @@ typedef struct NSSize {
 
 void foo() { 
         Foo *f;
-        f.size.width = 2.2; // expected-error {{cannot assign to a sub-structure of an ivar using property assignment syntax}}
-	f.size.inner.dim = 200; // expected-error {{cannot assign to a sub-structure of an ivar using property assignment syntax}}
+        f.size.width = 2.2; // expected-error {{expression is not assignable using property assignment syntax}}
+	f.size.inner.dim = 200; // expected-error {{expression is not assignable using property assignment syntax}}
 }
 
 // radar 7628953
@@ -28,7 +28,7 @@ void foo() {
 
 @implementation Gorf
 - (void)MyView_sharedInit {
-    self.size.width = 2.2; // expected-error {{cannot assign to a sub-structure returned via a getter using property assignment syntax}}
+    self.size.width = 2.2; // expected-error {{expression is not assignable using property assignment syntax}}
 }
 - (NSSize)size {}
 @end