[clang-tools-extra] [clang] [clang][NFC] Refactor `CXXNewExpr::InitializationStyle` (PR #71322)

[Aaron Ballman via cfe-commits]

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@@ -2034,18 +2035,19 @@ ExprResult Sema::BuildCXXNew(SourceRange Range, bool UseGlobal,
       //     - If the new-initializer is omitted, the object is default-
       //       initialized (8.5); if no initialization is performed,
       //       the object has indeterminate value
-      = initStyle == CXXNewExpr::NoInit
+      = initStyle == CXXNewInitializationStyle::None ||
+                initStyle == CXXNewInitializationStyle::Implicit
             ? InitializationKind::CreateDefault(TypeRange.getBegin())
-            //     - Otherwise, the new-initializer is interpreted according to
-            //     the
-            //       initialization rules of 8.5 for direct-initialization.
-            : initStyle == CXXNewExpr::ListInit
-                  ? InitializationKind::CreateDirectList(
-                        TypeRange.getBegin(), Initializer->getBeginLoc(),
-                        Initializer->getEndLoc())
-                  : InitializationKind::CreateDirect(TypeRange.getBegin(),
-                                                     DirectInitRange.getBegin(),
-                                                     DirectInitRange.getEnd());
+        //     - Otherwise, the new-initializer is interpreted according to
+        //     the
+        //       initialization rules of 8.5 for direct-initialization.
+        : initStyle == CXXNewInitializationStyle::List
+            ? InitializationKind::CreateDirectList(TypeRange.getBegin(),
+                                                   Initializer->getBeginLoc(),
+                                                   Initializer->getEndLoc())
+            : InitializationKind::CreateDirect(TypeRange.getBegin(),
+                                               DirectInitRange.getBegin(),
+                                               DirectInitRange.getEnd());
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AaronBallman wrote:

Convert this to a `switch` so it's easier to read?

https://github.com/llvm/llvm-project/pull/71322