[clang] [clang-format] Support of TableGen value annotations. (PR #80299)

[Björn Schäpers via cfe-commits]

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@@ -833,13 +885,207 @@ class AnnotatingParser {
         Left->setType(TT_ArrayInitializerLSquare);
       }
       FormatToken *Tok = CurrentToken;
+      if (Style.isTableGen()) {
+        if (CurrentToken->isOneOf(tok::comma, tok::minus, tok::ellipsis)) {
+          // '-' and '...' appears as a separator in slice.
+          next();
+        } else {
+          // In TableGen there must be a list of Values in square brackets.
+          // It must be ValueList or SliceElements.
+          if (!parseTableGenValue())
+            return false;
+        }
+        updateParameterCount(Left, Tok);
+        continue;
+      }
       if (!consumeToken())
         return false;
       updateParameterCount(Left, Tok);
     }
     return false;
   }
 
+  void nextTableGenNonComment() {
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HazardyKnusperkeks wrote:

This is an action, it should contain a verb.

https://github.com/llvm/llvm-project/pull/80299