Introduce ObjCMessageExpr::getReceiverRange() to get the source range of the receiver.

llvm-svn: 121517

2 files changed, 20 insertions, 1 deletions

diff --git a/clang/include/clang/AST/ExprObjC.h b/clang/include/clang/AST/ExprObjC.h
index aaad04b3040..263ba17a021 100644
--- a/clang/include/clang/AST/ExprObjC.h
+++ b/clang/include/clang/AST/ExprObjC.h
@@ -610,6 +610,9 @@ public:
   /// sent to.
   ReceiverKind getReceiverKind() const { return (ReceiverKind)Kind; }
 
+  /// \brief Source range of the receiver.
+  SourceRange getReceiverRange() const;
+
   /// \brief Determine whether this is an instance message to either a
   /// computed object or to super.
   bool isInstanceMessage() const {
diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index 93ebb704429..bb919346691 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -2330,7 +2330,23 @@ ObjCMessageExpr *ObjCMessageExpr::CreateEmpty(ASTContext &Context,
   void *Mem = Context.Allocate(Size, llvm::AlignOf<ObjCMessageExpr>::Alignment);
   return new (Mem) ObjCMessageExpr(EmptyShell(), NumArgs);
 }
-         
+
+SourceRange ObjCMessageExpr::getReceiverRange() const {
+  switch (getReceiverKind()) {
+  case Instance:
+    return getInstanceReceiver()->getSourceRange();
+
+  case Class:
+    return getClassReceiverTypeInfo()->getTypeLoc().getSourceRange();
+
+  case SuperInstance:
+  case SuperClass:
+    return getSuperLoc();
+  }
+
+  return SourceLocation();
+}
+
 Selector ObjCMessageExpr::getSelector() const {
   if (HasMethod)
     return reinterpret_cast<const ObjCMethodDecl *>(SelectorOrMethod)