add file description

Author: changkhothuychung

clang/lib/Parse/ParseReflect.cpp

@@ -1,11 +1,18 @@
-
-
-
+//===--- ParseReflect.cpp - C++2c Reflection Parsing ---------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file implements parsing for reflection facilities.
+//
+//===----------------------------------------------------------------------===//
 
 #include "clang/AST/LocInfoType.h"
 #include "clang/Basic/DiagnosticParse.h"
 #include "clang/Parse/Parser.h"
-#include "clang/Parse/RAIIObjectsForParser.h"
 #include "clang/Sema/EnterExpressionEvaluationContext.h"
 using namespace clang;