Refactored checking on readonly property into a method.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60050 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/AST/DeclObjC.cpp b/lib/AST/DeclObjC.cpp
index 040a921908..e631bac452 100644
--- a/lib/AST/DeclObjC.cpp
+++ b/lib/AST/DeclObjC.cpp
@@ -257,6 +257,26 @@ void ObjCMethodDecl::setMethodParams(ParmVarDecl **NewParamInfo,
   }
 }
 
+/// isPropertyReadonly - Return true if property is a readonly, by seaching
+/// for the property in the class and in its categories.
+///
+bool ObjCInterfaceDecl::isPropertyReadonly(ObjCPropertyDecl *PDecl) const
+{
+  if (PDecl->isReadOnly()) {
+    // Main class has the property as 'readyonly'. Must search
+    // through the category list to see if the property's 
+    // attribute has been over-ridden to 'readwrite'.
+    for (ObjCCategoryDecl *Category = getCategoryList();
+         Category; Category = Category->getNextClassCategory()) {
+      PDecl= Category->FindPropertyDeclaration(PDecl->getIdentifier());
+      if (PDecl && !PDecl->isReadOnly())
+        return false;
+    }
+    return true;
+  }
+  return false;  
+}
+
 /// FindPropertyDeclaration - Finds declaration of the property given its name
 /// in 'PropertyId' and returns it. It returns 0, if not found.
 ///