================
@@ -0,0 +1,60 @@
+//===--- SemaExprCXXtUtils.h - Utils for SemaExprCXX ------------*- C++ 
-*-===//
+//
+// 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 defines helper classes for Sema Expr CXX.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_SEMA_SEMAEXPRCXXUTILS_H
+#define LLVM_CLANG_SEMA_SEMAEXPRCXXUTILS_H
+
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/TypeBase.h"
+#include "clang/Basic/SourceLocation.h"
+#include "llvm/ADT/APSInt.h"
+#include <optional>
+
+namespace clang {
+
+/// Helper class to encapsulate an optional pointer to an array size Expr
+///
+/// Allows rewriting constructions like:
+/// @code if (ArraySize && *ArraySize && (*ArraySize)->getBeginLoc())
+/// into cleaner code:
+/// @code if (ArraySize.getExprBeginLoc())
+class ArraySizeOptExpr {
+  std::optional<Expr *> ArraySize;
+
+public:
----------------
ojhunt wrote:

I'm sorry, this seems a significantly over engineered/designed solution for 
this problem. It's a very large abstraction over an optional<Expr>

https://github.com/llvm/llvm-project/pull/186617
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