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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121517 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 17 insertions, 1 deletions

diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp
index 93ebb70442..bb91934669 100644
--- a/lib/AST/Expr.cpp
+++ b/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)