[completion] complete ObjC interface names in an expression

Objective-C interfaces can be used in a class property expression.

rdar://26982192

llvm-svn: 318129

1 files changed, 9 insertions, 2 deletions

diff --git a/clang/lib/Sema/SemaCodeComplete.cpp b/clang/lib/Sema/SemaCodeComplete.cpp
index 26004cf3c36..7ee24b114cc 100644
--- a/clang/lib/Sema/SemaCodeComplete.cpp
+++ b/clang/lib/Sema/SemaCodeComplete.cpp
@@ -1082,9 +1082,16 @@ bool ResultBuilder::IsOrdinaryName(const NamedDecl *ND) const {
 /// ordinary name lookup but is not a type name.
 bool ResultBuilder::IsOrdinaryNonTypeName(const NamedDecl *ND) const {
   ND = cast<NamedDecl>(ND->getUnderlyingDecl());
-  if (isa<TypeDecl>(ND) || isa<ObjCInterfaceDecl>(ND))
+  if (isa<TypeDecl>(ND))
     return false;
-  
+  // Objective-C interfaces names are not filtered by this method because they
+  // can be used in a class property expression. We can still filter out
+  // @class declarations though.
+  if (const auto *ID = dyn_cast<ObjCInterfaceDecl>(ND)) {
+    if (!ID->getDefinition())
+      return false;
+  }
+
   unsigned IDNS = Decl::IDNS_Ordinary | Decl::IDNS_LocalExtern;
   if (SemaRef.getLangOpts().CPlusPlus)
     IDNS |= Decl::IDNS_Tag | Decl::IDNS_Namespace | Decl::IDNS_Member;