================
@@ -4210,6 +4215,7 @@ class Parser : public CodeCompletionHandler {
   /// \endverbatim
   ExprResult ParseParenExpression(ParenParseOption &ExprType,
                                   bool stopIfCastExpr, bool isTypeCast,
+                                  bool ParenKnownToBeNonCast,
----------------
Sirraide wrote:

> So it doesn't mean "this is, is not, or maybe a cast expression", it means 
> "if there's a typo, should we allow type names or not?"

Ok, I like to say I’m bad at naming, but that is actually awful. ;Þ

> How about this for a solution:
> 
> 1. Rename `TypeCastState` to `TypoCorrectionTypeBehavior`
> 2. Rename `NotTypeCast`, `IsTypeCast`, and `MaybeTypeCast` to `AllowNonTypes, 
> `AllowTypes`, and `AllowBoth`
> 3. Add a new enumeration `TypeCastState` with members `IsTypeCast`, 
> `IsNotTypeCast`, and `Unknown`
> 4. Change `ParseParenExpression` to take both a `TypoCorrectionTypeBehavior` 
> and a `TypeCastState`.

I was about to suggest this so sgtm

https://github.com/llvm/llvm-project/pull/146394
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