Implement parsing and code generation of Objective-C string literals.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41238 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/StmtPrinter.cpp b/AST/StmtPrinter.cpp
index 6387f66..6b2fce8 100644
--- a/AST/StmtPrinter.cpp
+++ b/AST/StmtPrinter.cpp
@@ -511,6 +511,12 @@
   OS << (Node->getValue() ? "true" : "false");
 }
 
+// Obj-C 
+
+void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {
+  OS << "@";
+  VisitStringLiteral(Node->getString());
+}
 
 //===----------------------------------------------------------------------===//
 // Stmt method implementations