[clang-format] Hanlde qualified type name for `QualifierAlignment` (#125327)

Fixes #125178.

1 files changed, 11 insertions, 1 deletions

diff --git a/clang/lib/Format/QualifierAlignmentFixer.cpp b/clang/lib/Format/QualifierAlignmentFixer.cpp
index 21fb507..23e8b44 100644
--- a/clang/lib/Format/QualifierAlignmentFixer.cpp
+++ b/clang/lib/Format/QualifierAlignmentFixer.cpp
@@ -132,8 +132,10 @@ static void rotateTokens(const SourceManager &SourceMgr,
   // Then move through the other tokens.
   auto *Tok = Begin;
   while (Tok != End) {
-    if (!NewText.empty() && !endsWithSpace(NewText))
+    if (!NewText.empty() && !endsWithSpace(NewText) &&
+        Tok->isNot(tok::coloncolon)) {
       NewText += " ";
+    }
 
     NewText += Tok->TokenText;
     Tok = Tok->Next;
@@ -412,6 +414,14 @@ const FormatToken *LeftRightQualifierAlignmentFixer::analyzeLeft(
   // The case `const long long volatile int` -> `const volatile long long int`
   // The case `long volatile long int const` -> `const volatile long long int`
   if (TypeToken->isTypeName(LangOpts)) {
+    for (const auto *Prev = TypeToken->Previous;
+         Prev && Prev->is(tok::coloncolon); Prev = Prev->Previous) {
+      TypeToken = Prev;
+      Prev = Prev->Previous;
+      if (!(Prev && Prev->is(tok::identifier)))
+        break;
+      TypeToken = Prev;
+    }
     const FormatToken *LastSimpleTypeSpecifier = TypeToken;
     while (isConfiguredQualifierOrType(
         LastSimpleTypeSpecifier->getPreviousNonComment(),