[clang] [clang-format] Skip PP directives when determining brace kind (PR #69473)

[Emilia Kond via cfe-commits]

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@@ -491,11 +491,19 @@ void UnwrappedLineParser::calculateBraceTypes(bool ExpectClassBody) {
   SmallVector<StackEntry, 8> LBraceStack;
   assert(Tok->is(tok::l_brace));
   do {
-    // Get next non-comment token.
-    FormatToken *NextTok;
-    do {
-      NextTok = Tokens->getNextToken();
-    } while (NextTok->is(tok::comment));
+    // Get next non-comment, non-preprocessor token.
+    FormatToken *NextTok = Tokens->getNextToken();
+    while (NextTok->is(tok::comment) ||
+           (NextTok->is(tok::hash) && isOnNewLine(*NextTok))) {
+      while (NextTok->is(tok::comment))
+        NextTok = Tokens->getNextToken();
+      while (NextTok->is(tok::hash) && isOnNewLine(*NextTok)) {
+        ScopedMacroState MacroState(*Line, Tokens, NextTok);
+        do {
+          NextTok = Tokens->getNextToken();
+        } while (NextTok->isNot(tok::eof));
+      }
+    }
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rymiel wrote:

Ah, sorry, I missed the fact that you gave `NewlinesBefore` as the replacement to `isOnNewLine`, yes, that works better, thank you

https://github.com/llvm/llvm-project/pull/69473