[clang] [clang-format] Handle templates in qualified typenames (PR #143194)

[Ben Dunkin via cfe-commits]

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@@ -3622,6 +3622,29 @@ static unsigned maxNestingDepth(const AnnotatedLine &Line) {
   return Result;
 }
 
+static bool startsQualifiedName(const FormatToken *Tok) {
+  // Consider:       A::B::B()
+  //           Tok --^
+  if (Tok->startsSequence(tok::identifier, tok::coloncolon))
+    return true;
+
+  // Consider:       A<float>::B<int>::B()
+  //           Tok --^
+  if (Tok->startsSequence(tok::identifier, TT_TemplateOpener)) {
+    Tok = Tok->getNextNonComment();
+    assert(Tok);
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bdunkin wrote:

Done.

https://github.com/llvm/llvm-project/pull/143194