[libclang] Introduce clang_Cursor_getReceiverType which returns the CXType for

the receiver of an ObjC message expression.

rdar://12578643

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167201 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 20 deletions

diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index 4a8033f878..114aad5463 100644
--- a/lib/AST/Expr.cpp
+++ b/lib/AST/Expr.cpp
@@ -3442,33 +3442,29 @@ Selector ObjCMessageExpr::getSelector() const {
   return Selector(SelectorOrMethod); 
 }
 
-ObjCInterfaceDecl *ObjCMessageExpr::getReceiverInterface() const {
+QualType ObjCMessageExpr::getReceiverType() const {
   switch (getReceiverKind()) {
   case Instance:
-    if (const ObjCObjectPointerType *Ptr
-          = getInstanceReceiver()->getType()->getAs<ObjCObjectPointerType>())
-      return Ptr->getInterfaceDecl();
-    break;
-
+    return getInstanceReceiver()->getType();
   case Class:
-    if (const ObjCObjectType *Ty
-          = getClassReceiver()->getAs<ObjCObjectType>())
-      return Ty->getInterface();
-    break;
-
+    return getClassReceiver();
   case SuperInstance:
-    if (const ObjCObjectPointerType *Ptr
-          = getSuperType()->getAs<ObjCObjectPointerType>())
-      return Ptr->getInterfaceDecl();
-    break;
-
   case SuperClass:
-    if (const ObjCObjectType *Iface
-          = getSuperType()->getAs<ObjCObjectType>())
-      return Iface->getInterface();
-    break;
+    return getSuperType();
   }
 
+  llvm_unreachable("unexpected receiver kind");
+}
+
+ObjCInterfaceDecl *ObjCMessageExpr::getReceiverInterface() const {
+  QualType T = getReceiverType();
+
+  if (const ObjCObjectPointerType *Ptr = T->getAs<ObjCObjectPointerType>())
+    return Ptr->getInterfaceDecl();
+
+  if (const ObjCObjectType *Ty = T->getAs<ObjCObjectType>())
+    return Ty->getInterface();
+
   return 0;
 }