[cfe-commits] r95838 - in /cfe/trunk: include/clang/AST/Expr.h include/clang/Basic/DiagnosticSemaKinds.td lib/AST/Expr.cpp lib/Sema/SemaExpr.cpp test/SemaObjC/property-not-lvalue.m

[Fariborz Jahanian]

Author: fjahanian
Date: Wed Feb 10 19:11:34 2010
New Revision: 95838

URL: http://llvm.org/viewvc/llvm-project?rev=95838&view=rev
Log:
Diagnose when user provided getter is being used as lvalue
using property dot-syntax. Fixes radar 7628953.


Modified:
    cfe/trunk/include/clang/AST/Expr.h
    cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
    cfe/trunk/lib/AST/Expr.cpp
    cfe/trunk/lib/Sema/SemaExpr.cpp
    cfe/trunk/test/SemaObjC/property-not-lvalue.m

Modified: cfe/trunk/include/clang/AST/Expr.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Expr.h?rev=95838&r1=95837&r2=95838&view=diff

==============================================================================
--- cfe/trunk/include/clang/AST/Expr.h (original)
+++ cfe/trunk/include/clang/AST/Expr.h Wed Feb 10 19:11:34 2010
@@ -149,7 +149,8 @@
     LV_DuplicateVectorComponents,
     LV_InvalidExpression,
     LV_MemberFunction,
-    LV_SubObjCPropertySetting
+    LV_SubObjCPropertySetting,
+    LV_SubObjCPropertyGetterSetting
   };
   isLvalueResult isLvalue(ASTContext &Ctx) const;
 
@@ -179,7 +180,8 @@
     MLV_ReadonlyProperty,
     MLV_NoSetterProperty,
     MLV_MemberFunction,
-    MLV_SubObjCPropertySetting
+    MLV_SubObjCPropertySetting,
+    MLV_SubObjCPropertyGetterSetting
   };
   isModifiableLvalueResult isModifiableLvalue(ASTContext &Ctx,
                                               SourceLocation *Loc = 0) const;

Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=95838&r1=95837&r2=95838&view=diff

==============================================================================
--- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Wed Feb 10 19:11:34 2010
@@ -1869,7 +1869,11 @@
 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">;
+  "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">;
 
 def ext_freestanding_complex : Extension<
   "complex numbers are an extension in a freestanding C99 implementation">;

Modified: cfe/trunk/lib/AST/Expr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/Expr.cpp?rev=95838&r1=95837&r2=95838&view=diff

==============================================================================
--- cfe/trunk/lib/AST/Expr.cpp (original)
+++ cfe/trunk/lib/AST/Expr.cpp Wed Feb 10 19:11:34 2010
@@ -1068,8 +1068,11 @@
         if (m->isArrow())
           return LV_Valid;
         Expr *BaseExp = m->getBase();
-        return (BaseExp->getStmtClass() == ObjCPropertyRefExprClass) ?
-                 LV_SubObjCPropertySetting : BaseExp->isLvalue(Ctx);        
+        if (BaseExp->getStmtClass() == ObjCPropertyRefExprClass)
+          return LV_SubObjCPropertySetting;
+        return 
+          (BaseExp->getStmtClass() == ObjCImplicitSetterGetterRefExprClass) ?
+           LV_SubObjCPropertyGetterSetting : BaseExp->isLvalue(Ctx);        
       }
 
       //   -- If it refers to a static member function [...], then
@@ -1092,8 +1095,11 @@
     if (m->isArrow())
       return LV_Valid;
     Expr *BaseExp = m->getBase();
-    return (BaseExp->getStmtClass() == ObjCPropertyRefExprClass) ?
-             LV_SubObjCPropertySetting : BaseExp->isLvalue(Ctx);
+    if (BaseExp->getStmtClass() == ObjCPropertyRefExprClass)
+          return LV_SubObjCPropertySetting;
+    return 
+      (BaseExp->getStmtClass() == ObjCImplicitSetterGetterRefExprClass) ?
+       LV_SubObjCPropertyGetterSetting : BaseExp->isLvalue(Ctx);        
   }
   case UnaryOperatorClass:
     if (cast<UnaryOperator>(this)->getOpcode() == UnaryOperator::Deref)
@@ -1283,7 +1289,9 @@
     }
     return MLV_InvalidExpression;
   case LV_MemberFunction: return MLV_MemberFunction;
-    case LV_SubObjCPropertySetting: return MLV_SubObjCPropertySetting;
+  case LV_SubObjCPropertySetting: return MLV_SubObjCPropertySetting;
+  case LV_SubObjCPropertyGetterSetting: 
+    return MLV_SubObjCPropertyGetterSetting;
   }
 
   // The following is illegal:

Modified: cfe/trunk/lib/Sema/SemaExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExpr.cpp?rev=95838&r1=95837&r2=95838&view=diff

==============================================================================
--- cfe/trunk/lib/Sema/SemaExpr.cpp (original)
+++ cfe/trunk/lib/Sema/SemaExpr.cpp Wed Feb 10 19:11:34 2010
@@ -5734,6 +5734,9 @@
   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;

Modified: cfe/trunk/test/SemaObjC/property-not-lvalue.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/property-not-lvalue.m?rev=95838&r1=95837&r2=95838&view=diff

==============================================================================
--- cfe/trunk/test/SemaObjC/property-not-lvalue.m (original)
+++ cfe/trunk/test/SemaObjC/property-not-lvalue.m Wed Feb 10 19:11:34 2010
@@ -18,3 +18,17 @@
         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}}
 }
+
+// radar 7628953
+
+ at interface Gorf  {
+}
+- (NSSize)size;
+ at end
+
+ at 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}}
+}
+- (NSSize)size {}
+ at end