Author: Owen Pan
Date: 2024-05-12T23:15:35-07:00
New Revision: 1fadb2b0c881ced247931f442fdee6c4ed96dccb

URL: 
https://github.com/llvm/llvm-project/commit/1fadb2b0c881ced247931f442fdee6c4ed96dccb
DIFF: 
https://github.com/llvm/llvm-project/commit/1fadb2b0c881ced247931f442fdee6c4ed96dccb.diff

LOG: Revert "[clang-format] Fix FormatToken::isSimpleTypeSpecifier() (#91712)"

This reverts commits e62ce1f8842c, 5cd280433e8e, and de641e289269 due to
buildbot failures.

Added: 
    

Modified: 
    clang/lib/Format/Format.cpp
    clang/lib/Format/FormatToken.cpp
    clang/lib/Format/FormatToken.h
    clang/lib/Format/FormatTokenLexer.cpp
    clang/lib/Format/QualifierAlignmentFixer.cpp
    clang/lib/Format/QualifierAlignmentFixer.h
    clang/lib/Format/TokenAnalyzer.cpp
    clang/lib/Format/TokenAnalyzer.h
    clang/lib/Format/TokenAnnotator.cpp
    clang/lib/Format/TokenAnnotator.h
    clang/lib/Format/UnwrappedLineParser.cpp
    clang/lib/Format/UnwrappedLineParser.h
    clang/unittests/Format/QualifierFixerTest.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 52005a6c881f3..8f027ffa20cca 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -3858,7 +3858,8 @@ LangOptions getFormattingLangOpts(const FormatStyle 
&Style) {
   LangOpts.Digraphs = LexingStd >= FormatStyle::LS_Cpp11;
 
   LangOpts.LineComment = 1;
-  LangOpts.CXXOperatorNames = Style.isCpp();
+  bool AlternativeOperators = Style.isCpp();
+  LangOpts.CXXOperatorNames = AlternativeOperators ? 1 : 0;
   LangOpts.Bool = 1;
   LangOpts.ObjC = 1;
   LangOpts.MicrosoftExt = 1;    // To get kw___try, kw___finally.

diff  --git a/clang/lib/Format/FormatToken.cpp 
b/clang/lib/Format/FormatToken.cpp
index 85bec71ffbbc8..4fb70ffac706d 100644
--- a/clang/lib/Format/FormatToken.cpp
+++ b/clang/lib/Format/FormatToken.cpp
@@ -34,6 +34,43 @@ const char *getTokenTypeName(TokenType Type) {
   return nullptr;
 }
 
+// FIXME: This is copy&pasted from Sema. Put it in a common place and remove
+// duplication.
+bool FormatToken::isSimpleTypeSpecifier() const {
+  switch (Tok.getKind()) {
+  case tok::kw_short:
+  case tok::kw_long:
+  case tok::kw___int64:
+  case tok::kw___int128:
+  case tok::kw_signed:
+  case tok::kw_unsigned:
+  case tok::kw_void:
+  case tok::kw_char:
+  case tok::kw_int:
+  case tok::kw_half:
+  case tok::kw_float:
+  case tok::kw_double:
+  case tok::kw___bf16:
+  case tok::kw__Float16:
+  case tok::kw___float128:
+  case tok::kw___ibm128:
+  case tok::kw_wchar_t:
+  case tok::kw_bool:
+#define TRANSFORM_TYPE_TRAIT_DEF(_, Trait) case tok::kw___##Trait:
+#include "clang/Basic/TransformTypeTraits.def"
+  case tok::annot_typename:
+  case tok::kw_char8_t:
+  case tok::kw_char16_t:
+  case tok::kw_char32_t:
+  case tok::kw_typeof:
+  case tok::kw_decltype:
+  case tok::kw__Atomic:
+    return true;
+  default:
+    return false;
+  }
+}
+
 // Sorted common C++ non-keyword types.
 static SmallVector<StringRef> CppNonKeywordTypes = {
     "clock_t",  "int16_t",   "int32_t", "int64_t",   "int8_t",
@@ -41,16 +78,15 @@ static SmallVector<StringRef> CppNonKeywordTypes = {
     "uint32_t", "uint64_t",  "uint8_t", "uintptr_t",
 };
 
-bool FormatToken::isTypeName(const LangOptions &LangOpts) const {
-  const bool IsCpp = LangOpts.CXXOperatorNames;
-  return is(TT_TypeName) || Tok.isSimpleTypeSpecifier(LangOpts) ||
+bool FormatToken::isTypeName(bool IsCpp) const {
+  return is(TT_TypeName) || isSimpleTypeSpecifier() ||
          (IsCpp && is(tok::identifier) &&
           std::binary_search(CppNonKeywordTypes.begin(),
                              CppNonKeywordTypes.end(), TokenText));
 }
 
-bool FormatToken::isTypeOrIdentifier(const LangOptions &LangOpts) const {
-  return isTypeName(LangOpts) || isOneOf(tok::kw_auto, tok::identifier);
+bool FormatToken::isTypeOrIdentifier(bool IsCpp) const {
+  return isTypeName(IsCpp) || isOneOf(tok::kw_auto, tok::identifier);
 }
 
 bool FormatToken::isBlockIndentedInitRBrace(const FormatStyle &Style) const {

diff  --git a/clang/lib/Format/FormatToken.h b/clang/lib/Format/FormatToken.h
index 8792f4c750748..95f16fde5005f 100644
--- a/clang/lib/Format/FormatToken.h
+++ b/clang/lib/Format/FormatToken.h
@@ -684,8 +684,12 @@ struct FormatToken {
            isAttribute();
   }
 
-  [[nodiscard]] bool isTypeName(const LangOptions &LangOpts) const;
-  [[nodiscard]] bool isTypeOrIdentifier(const LangOptions &LangOpts) const;
+  /// Determine whether the token is a simple-type-specifier.
+  [[nodiscard]] bool isSimpleTypeSpecifier() const;
+
+  [[nodiscard]] bool isTypeName(bool IsCpp) const;
+
+  [[nodiscard]] bool isTypeOrIdentifier(bool IsCpp) const;
 
   bool isObjCAccessSpecifier() const {
     return is(tok::at) && Next &&

diff  --git a/clang/lib/Format/FormatTokenLexer.cpp 
b/clang/lib/Format/FormatTokenLexer.cpp
index e21b5a882b777..f430d3764babe 100644
--- a/clang/lib/Format/FormatTokenLexer.cpp
+++ b/clang/lib/Format/FormatTokenLexer.cpp
@@ -1442,6 +1442,7 @@ void FormatTokenLexer::readRawToken(FormatToken &Tok) {
 
 void FormatTokenLexer::resetLexer(unsigned Offset) {
   StringRef Buffer = SourceMgr.getBufferData(ID);
+  LangOpts = getFormattingLangOpts(Style);
   Lex.reset(new Lexer(SourceMgr.getLocForStartOfFile(ID), LangOpts,
                       Buffer.begin(), Buffer.begin() + Offset, Buffer.end()));
   Lex->SetKeepWhitespaceMode(true);

diff  --git a/clang/lib/Format/QualifierAlignmentFixer.cpp 
b/clang/lib/Format/QualifierAlignmentFixer.cpp
index a904f0b773c6d..c263530456727 100644
--- a/clang/lib/Format/QualifierAlignmentFixer.cpp
+++ b/clang/lib/Format/QualifierAlignmentFixer.cpp
@@ -268,11 +268,13 @@ const FormatToken 
*LeftRightQualifierAlignmentFixer::analyzeRight(
   if (isPossibleMacro(TypeToken))
     return Tok;
 
+  const bool IsCpp = Style.isCpp();
+
   // The case `const long long int volatile` -> `long long int const volatile`
   // The case `long const long int volatile` -> `long long int const volatile`
   // The case `long long volatile int const` -> `long long int const volatile`
   // The case `const long long volatile int` -> `long long int const volatile`
-  if (TypeToken->isTypeName(LangOpts)) {
+  if (TypeToken->isTypeName(IsCpp)) {
     // The case `const decltype(foo)` -> `const decltype(foo)`
     // The case `const typeof(foo)` -> `const typeof(foo)`
     // The case `const _Atomic(foo)` -> `const _Atomic(foo)`
@@ -281,7 +283,7 @@ const FormatToken 
*LeftRightQualifierAlignmentFixer::analyzeRight(
 
     const FormatToken *LastSimpleTypeSpecifier = TypeToken;
     while (isQualifierOrType(LastSimpleTypeSpecifier->getNextNonComment(),
-                             LangOpts)) {
+                             IsCpp)) {
       LastSimpleTypeSpecifier = LastSimpleTypeSpecifier->getNextNonComment();
     }
 
@@ -293,7 +295,7 @@ const FormatToken 
*LeftRightQualifierAlignmentFixer::analyzeRight(
   // The case  `unsigned short const` -> `unsigned short const`
   // The case:
   // `unsigned short volatile const` -> `unsigned short const volatile`
-  if (PreviousCheck && PreviousCheck->isTypeName(LangOpts)) {
+  if (PreviousCheck && PreviousCheck->isTypeName(IsCpp)) {
     if (LastQual != Tok)
       rotateTokens(SourceMgr, Fixes, Tok, LastQual, /*Left=*/false);
     return Tok;
@@ -410,11 +412,11 @@ const FormatToken 
*LeftRightQualifierAlignmentFixer::analyzeLeft(
   // The case `volatile long long const int` -> `const volatile long long int`
   // 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)) {
+  if (const bool IsCpp = Style.isCpp(); TypeToken->isTypeName(IsCpp)) {
     const FormatToken *LastSimpleTypeSpecifier = TypeToken;
     while (isConfiguredQualifierOrType(
         LastSimpleTypeSpecifier->getPreviousNonComment(),
-        ConfiguredQualifierTokens, LangOpts)) {
+        ConfiguredQualifierTokens, IsCpp)) {
       LastSimpleTypeSpecifier =
           LastSimpleTypeSpecifier->getPreviousNonComment();
     }
@@ -612,16 +614,16 @@ void prepareLeftRightOrderingForQualifierAlignmentFixer(
   }
 }
 
-bool LeftRightQualifierAlignmentFixer::isQualifierOrType(
-    const FormatToken *Tok, const LangOptions &LangOpts) {
-  return Tok && (Tok->isTypeName(LangOpts) || Tok->is(tok::kw_auto) ||
-                 isQualifier(Tok));
+bool LeftRightQualifierAlignmentFixer::isQualifierOrType(const FormatToken 
*Tok,
+                                                         bool IsCpp) {
+  return Tok &&
+         (Tok->isTypeName(IsCpp) || Tok->is(tok::kw_auto) || isQualifier(Tok));
 }
 
 bool LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
     const FormatToken *Tok, const std::vector<tok::TokenKind> &Qualifiers,
-    const LangOptions &LangOpts) {
-  return Tok && (Tok->isTypeName(LangOpts) || Tok->is(tok::kw_auto) ||
+    bool IsCpp) {
+  return Tok && (Tok->isTypeName(IsCpp) || Tok->is(tok::kw_auto) ||
                  isConfiguredQualifier(Tok, Qualifiers));
 }
 

diff  --git a/clang/lib/Format/QualifierAlignmentFixer.h 
b/clang/lib/Format/QualifierAlignmentFixer.h
index 710fa2dc00309..e1cc27e62b13a 100644
--- a/clang/lib/Format/QualifierAlignmentFixer.h
+++ b/clang/lib/Format/QualifierAlignmentFixer.h
@@ -71,12 +71,11 @@ class LeftRightQualifierAlignmentFixer : public 
TokenAnalyzer {
                                  tok::TokenKind QualifierType);
 
   // Is the Token a simple or qualifier type
-  static bool isQualifierOrType(const FormatToken *Tok,
-                                const LangOptions &LangOpts);
+  static bool isQualifierOrType(const FormatToken *Tok, bool IsCpp = true);
   static bool
   isConfiguredQualifierOrType(const FormatToken *Tok,
                               const std::vector<tok::TokenKind> &Qualifiers,
-                              const LangOptions &LangOpts);
+                              bool IsCpp = true);
 
   // Is the Token likely a Macro
   static bool isPossibleMacro(const FormatToken *Tok);

diff  --git a/clang/lib/Format/TokenAnalyzer.cpp 
b/clang/lib/Format/TokenAnalyzer.cpp
index 804a2b0f5e8c1..bd648c430f9b0 100644
--- a/clang/lib/Format/TokenAnalyzer.cpp
+++ b/clang/lib/Format/TokenAnalyzer.cpp
@@ -84,7 +84,7 @@ Environment::Environment(StringRef Code, StringRef FileName,
       NextStartColumn(NextStartColumn), LastStartColumn(LastStartColumn) {}
 
 TokenAnalyzer::TokenAnalyzer(const Environment &Env, const FormatStyle &Style)
-    : Style(Style), LangOpts(getFormattingLangOpts(Style)), Env(Env),
+    : Style(Style), Env(Env),
       AffectedRangeMgr(Env.getSourceManager(), Env.getCharRanges()),
       UnwrappedLines(1),
       Encoding(encoding::detectEncoding(
@@ -101,7 +101,7 @@ std::pair<tooling::Replacements, unsigned>
 TokenAnalyzer::process(bool SkipAnnotation) {
   tooling::Replacements Result;
   llvm::SpecificBumpPtrAllocator<FormatToken> Allocator;
-  IdentifierTable IdentTable(LangOpts);
+  IdentifierTable IdentTable(getFormattingLangOpts(Style));
   FormatTokenLexer Lex(Env.getSourceManager(), Env.getFileID(),
                        Env.getFirstStartColumn(), Style, Encoding, Allocator,
                        IdentTable);

diff  --git a/clang/lib/Format/TokenAnalyzer.h 
b/clang/lib/Format/TokenAnalyzer.h
index ef559099d325d..b7494c395c8a2 100644
--- a/clang/lib/Format/TokenAnalyzer.h
+++ b/clang/lib/Format/TokenAnalyzer.h
@@ -92,7 +92,6 @@ class TokenAnalyzer : public UnwrappedLineConsumer {
   void finishRun() override;
 
   FormatStyle Style;
-  LangOptions LangOpts;
   // Stores Style, FileID and SourceManager etc.
   const Environment &Env;
   // AffectedRangeMgr stores ranges to be fixed.

diff  --git a/clang/lib/Format/TokenAnnotator.cpp 
b/clang/lib/Format/TokenAnnotator.cpp
index 478cae23d3c8c..e935d3e2709cc 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -126,9 +126,7 @@ class AnnotatingParser {
                    const AdditionalKeywords &Keywords,
                    SmallVector<ScopeType> &Scopes)
       : Style(Style), Line(Line), CurrentToken(Line.First), AutoFound(false),
-        IsCpp(Style.isCpp()), LangOpts(getFormattingLangOpts(Style)),
-        Keywords(Keywords), Scopes(Scopes) {
-    assert(IsCpp == LangOpts.CXXOperatorNames);
+        IsCpp(Style.isCpp()), Keywords(Keywords), Scopes(Scopes) {
     Contexts.push_back(Context(tok::unknown, 1, /*IsExpression=*/false));
     resetTokenMetadata();
   }
@@ -564,7 +562,7 @@ class AnnotatingParser {
           (CurrentToken->is(tok::l_paren) && CurrentToken->Next &&
            CurrentToken->Next->isOneOf(tok::star, tok::amp, tok::caret));
       if ((CurrentToken->Previous->isOneOf(tok::kw_const, tok::kw_auto) ||
-           CurrentToken->Previous->isTypeName(LangOpts)) &&
+           CurrentToken->Previous->isTypeName(IsCpp)) &&
           !(CurrentToken->is(tok::l_brace) ||
             (CurrentToken->is(tok::l_paren) && !ProbablyFunctionTypeLParen))) {
         Contexts.back().IsExpression = false;
@@ -2626,7 +2624,7 @@ class AnnotatingParser {
       return true;
 
     // MyClass a;
-    if (PreviousNotConst->isTypeName(LangOpts))
+    if (PreviousNotConst->isTypeName(IsCpp))
       return true;
 
     // type[] a in Java
@@ -2730,7 +2728,7 @@ class AnnotatingParser {
     }
 
     if (Tok.Next->is(tok::question) ||
-        (Tok.Next->is(tok::ampamp) && !Tok.Previous->isTypeName(LangOpts))) {
+        (Tok.Next->is(tok::ampamp) && !Tok.Previous->isTypeName(IsCpp))) {
       return false;
     }
 
@@ -2759,10 +2757,9 @@ class AnnotatingParser {
     }
 
     // Heuristically try to determine whether the parentheses contain a type.
-    auto IsQualifiedPointerOrReference = [](FormatToken *T,
-                                            const LangOptions &LangOpts) {
+    auto IsQualifiedPointerOrReference = [](FormatToken *T, bool IsCpp) {
       // This is used to handle cases such as x = (foo *const)&y;
-      assert(!T->isTypeName(LangOpts) && "Should have already been checked");
+      assert(!T->isTypeName(IsCpp) && "Should have already been checked");
       // Strip trailing qualifiers such as const or volatile when checking
       // whether the parens could be a cast to a pointer/reference type.
       while (T) {
@@ -2794,8 +2791,8 @@ class AnnotatingParser {
     bool ParensAreType =
         !Tok.Previous ||
         Tok.Previous->isOneOf(TT_TemplateCloser, TT_TypeDeclarationParen) ||
-        Tok.Previous->isTypeName(LangOpts) ||
-        IsQualifiedPointerOrReference(Tok.Previous, LangOpts);
+        Tok.Previous->isTypeName(IsCpp) ||
+        IsQualifiedPointerOrReference(Tok.Previous, IsCpp);
     bool ParensCouldEndDecl =
         Tok.Next->isOneOf(tok::equal, tok::semi, tok::l_brace, tok::greater);
     if (ParensAreType && !ParensCouldEndDecl)
@@ -3068,7 +3065,6 @@ class AnnotatingParser {
   FormatToken *CurrentToken;
   bool AutoFound;
   bool IsCpp;
-  LangOptions LangOpts;
   const AdditionalKeywords &Keywords;
 
   SmallVector<ScopeType> &Scopes;
@@ -3643,8 +3639,7 @@ void TokenAnnotator::annotate(AnnotatedLine &Line) {
 
 // This function heuristically determines whether 'Current' starts the name of 
a
 // function declaration.
-static bool isFunctionDeclarationName(const LangOptions &LangOpts,
-                                      const FormatToken &Current,
+static bool isFunctionDeclarationName(bool IsCpp, const FormatToken &Current,
                                       const AnnotatedLine &Line,
                                       FormatToken *&ClosingParen) {
   assert(Current.Previous);
@@ -3663,7 +3658,7 @@ static bool isFunctionDeclarationName(const LangOptions 
&LangOpts,
   }
 
   auto skipOperatorName =
-      [&LangOpts](const FormatToken *Next) -> const FormatToken * {
+      [IsCpp](const FormatToken *Next) -> const FormatToken * {
     for (; Next; Next = Next->Next) {
       if (Next->is(TT_OverloadedOperatorLParen))
         return Next;
@@ -3682,7 +3677,7 @@ static bool isFunctionDeclarationName(const LangOptions 
&LangOpts,
         Next = Next->Next;
         continue;
       }
-      if ((Next->isTypeName(LangOpts) || Next->is(tok::identifier)) &&
+      if ((Next->isTypeName(IsCpp) || Next->is(tok::identifier)) &&
           Next->Next && Next->Next->isPointerOrReference()) {
         // For operator void*(), operator char*(), operator Foo*().
         Next = Next->Next;
@@ -3698,10 +3693,8 @@ static bool isFunctionDeclarationName(const LangOptions 
&LangOpts,
     return nullptr;
   };
 
-  const auto *Next = Current.Next;
-  const bool IsCpp = LangOpts.CXXOperatorNames;
-
   // Find parentheses of parameter list.
+  const FormatToken *Next = Current.Next;
   if (Current.is(tok::kw_operator)) {
     if (Previous.Tok.getIdentifierInfo() &&
         !Previous.isOneOf(tok::kw_return, tok::kw_co_return)) {
@@ -3781,7 +3774,7 @@ static bool isFunctionDeclarationName(const LangOptions 
&LangOpts,
       Tok = Tok->MatchingParen;
       continue;
     }
-    if (Tok->is(tok::kw_const) || Tok->isTypeName(LangOpts) ||
+    if (Tok->is(tok::kw_const) || Tok->isTypeName(IsCpp) ||
         Tok->isOneOf(TT_PointerOrReference, TT_StartOfName, tok::ellipsis)) {
       return true;
     }
@@ -3844,7 +3837,7 @@ void 
TokenAnnotator::calculateFormattingInformation(AnnotatedLine &Line) const {
       AfterLastAttribute = Tok;
     if (const bool IsCtorOrDtor = Tok->is(TT_CtorDtorDeclName);
         IsCtorOrDtor ||
-        isFunctionDeclarationName(LangOpts, *Tok, Line, ClosingParen)) {
+        isFunctionDeclarationName(IsCpp, *Tok, Line, ClosingParen)) {
       if (!IsCtorOrDtor)
         Tok->setFinalizedType(TT_FunctionDeclarationName);
       LineIsFunctionDeclaration = true;
@@ -4454,7 +4447,7 @@ bool TokenAnnotator::spaceRequiredBetween(const 
AnnotatedLine &Line,
     if (Left.Tok.isLiteral())
       return true;
     // for (auto a = 0, b = 0; const auto & c : {1, 2, 3})
-    if (Left.isTypeOrIdentifier(LangOpts) && Right.Next && Right.Next->Next &&
+    if (Left.isTypeOrIdentifier(IsCpp) && Right.Next && Right.Next->Next &&
         Right.Next->Next->is(TT_RangeBasedForLoopColon)) {
       return getTokenPointerOrReferenceAlignment(Right) !=
              FormatStyle::PAS_Left;
@@ -4497,7 +4490,7 @@ bool TokenAnnotator::spaceRequiredBetween(const 
AnnotatedLine &Line,
     if (Right.is(tok::l_brace) && Right.is(BK_Block))
       return true;
     // for (auto a = 0, b = 0; const auto& c : {1, 2, 3})
-    if (BeforeLeft && BeforeLeft->isTypeOrIdentifier(LangOpts) && Right.Next &&
+    if (BeforeLeft && BeforeLeft->isTypeOrIdentifier(IsCpp) && Right.Next &&
         Right.Next->is(TT_RangeBasedForLoopColon)) {
       return getTokenPointerOrReferenceAlignment(Left) !=
              FormatStyle::PAS_Right;
@@ -4541,7 +4534,7 @@ bool TokenAnnotator::spaceRequiredBetween(const 
AnnotatedLine &Line,
   if (Right.isPointerOrReference()) {
     const FormatToken *Previous = &Left;
     while (Previous && Previous->isNot(tok::kw_operator)) {
-      if (Previous->is(tok::identifier) || Previous->isTypeName(LangOpts)) {
+      if (Previous->is(tok::identifier) || Previous->isTypeName(IsCpp)) {
         Previous = Previous->getPreviousNonComment();
         continue;
       }
@@ -4730,7 +4723,7 @@ bool TokenAnnotator::spaceRequiredBetween(const 
AnnotatedLine &Line,
   if (!Style.isVerilog() &&
       (Left.isOneOf(tok::identifier, tok::greater, tok::r_square,
                     tok::r_paren) ||
-       Left.isTypeName(LangOpts)) &&
+       Left.isTypeName(IsCpp)) &&
       Right.is(tok::l_brace) && Right.getNextNonComment() &&
       Right.isNot(BK_Block)) {
     return false;

diff  --git a/clang/lib/Format/TokenAnnotator.h 
b/clang/lib/Format/TokenAnnotator.h
index d19d3d061e40c..25a24dccb1b83 100644
--- a/clang/lib/Format/TokenAnnotator.h
+++ b/clang/lib/Format/TokenAnnotator.h
@@ -211,10 +211,7 @@ class AnnotatedLine {
 class TokenAnnotator {
 public:
   TokenAnnotator(const FormatStyle &Style, const AdditionalKeywords &Keywords)
-      : Style(Style), IsCpp(Style.isCpp()),
-        LangOpts(getFormattingLangOpts(Style)), Keywords(Keywords) {
-    assert(IsCpp == LangOpts.CXXOperatorNames);
-  }
+      : Style(Style), IsCpp(Style.isCpp()), Keywords(Keywords) {}
 
   /// Adapts the indent levels of comment lines to the indent of the
   /// subsequent line.
@@ -263,7 +260,6 @@ class TokenAnnotator {
   const FormatStyle &Style;
 
   bool IsCpp;
-  LangOptions LangOpts;
 
   const AdditionalKeywords &Keywords;
 

diff  --git a/clang/lib/Format/UnwrappedLineParser.cpp 
b/clang/lib/Format/UnwrappedLineParser.cpp
index 4f1c2c5114e93..310b75485e089 100644
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -160,16 +160,13 @@ UnwrappedLineParser::UnwrappedLineParser(
     IdentifierTable &IdentTable)
     : Line(new UnwrappedLine), MustBreakBeforeNextToken(false),
       CurrentLines(&Lines), Style(Style), IsCpp(Style.isCpp()),
-      LangOpts(getFormattingLangOpts(Style)), Keywords(Keywords),
-      CommentPragmasRegex(Style.CommentPragmas), Tokens(nullptr),
-      Callback(Callback), AllTokens(Tokens), PPBranchLevel(-1),
+      Keywords(Keywords), CommentPragmasRegex(Style.CommentPragmas),
+      Tokens(nullptr), Callback(Callback), AllTokens(Tokens), 
PPBranchLevel(-1),
       IncludeGuard(Style.IndentPPDirectives == FormatStyle::PPDIS_None
                        ? IG_Rejected
                        : IG_Inited),
       IncludeGuardToken(nullptr), FirstStartColumn(FirstStartColumn),
-      Macros(Style.Macros, SourceMgr, Style, Allocator, IdentTable) {
-  assert(IsCpp == LangOpts.CXXOperatorNames);
-}
+      Macros(Style.Macros, SourceMgr, Style, Allocator, IdentTable) {}
 
 void UnwrappedLineParser::reset() {
   PPBranchLevel = -1;
@@ -1873,7 +1870,7 @@ void UnwrappedLineParser::parseStructuralElement(
     case tok::caret:
       nextToken();
       // Block return type.
-      if (FormatTok->Tok.isAnyIdentifier() || FormatTok->isTypeName(LangOpts)) 
{
+      if (FormatTok->Tok.isAnyIdentifier() || FormatTok->isTypeName(IsCpp)) {
         nextToken();
         // Return types: pointers are ok too.
         while (FormatTok->is(tok::star))
@@ -2234,7 +2231,7 @@ bool UnwrappedLineParser::tryToParseLambda() {
   bool InTemplateParameterList = false;
 
   while (FormatTok->isNot(tok::l_brace)) {
-    if (FormatTok->isTypeName(LangOpts)) {
+    if (FormatTok->isTypeName(IsCpp)) {
       nextToken();
       continue;
     }
@@ -3451,7 +3448,7 @@ bool UnwrappedLineParser::parseRequires() {
     break;
   }
   default:
-    if (PreviousNonComment->isTypeOrIdentifier(LangOpts)) {
+    if (PreviousNonComment->isTypeOrIdentifier(IsCpp)) {
       // This is a requires clause.
       parseRequiresClause(RequiresToken);
       return true;
@@ -3514,7 +3511,7 @@ bool UnwrappedLineParser::parseRequires() {
       --OpenAngles;
       break;
     default:
-      if (NextToken->isTypeName(LangOpts)) {
+      if (NextToken->isTypeName(IsCpp)) {
         FormatTok = Tokens->setPosition(StoredPosition);
         parseRequiresExpression(RequiresToken);
         return false;
@@ -4030,7 +4027,7 @@ void UnwrappedLineParser::parseRecord(bool ParseAsExpr) {
       if (FormatTok->is(tok::l_square)) {
         FormatToken *Previous = FormatTok->Previous;
         if (!Previous || (Previous->isNot(tok::r_paren) &&
-                          !Previous->isTypeOrIdentifier(LangOpts))) {
+                          !Previous->isTypeOrIdentifier(IsCpp))) {
           // Don't try parsing a lambda if we had a closing parenthesis before,
           // it was probably a pointer to an array: int (*)[].
           if (!tryToParseLambda())

diff  --git a/clang/lib/Format/UnwrappedLineParser.h 
b/clang/lib/Format/UnwrappedLineParser.h
index d7963a4211bb9..2a0fe19d09572 100644
--- a/clang/lib/Format/UnwrappedLineParser.h
+++ b/clang/lib/Format/UnwrappedLineParser.h
@@ -316,7 +316,6 @@ class UnwrappedLineParser {
 
   const FormatStyle &Style;
   bool IsCpp;
-  LangOptions LangOpts;
   const AdditionalKeywords &Keywords;
 
   llvm::Regex CommentPragmasRegex;

diff  --git a/clang/unittests/Format/QualifierFixerTest.cpp 
b/clang/unittests/Format/QualifierFixerTest.cpp
index fdc392e5d9481..792d8f3c3a982 100644
--- a/clang/unittests/Format/QualifierFixerTest.cpp
+++ b/clang/unittests/Format/QualifierFixerTest.cpp
@@ -1055,82 +1055,70 @@ TEST_F(QualifierFixerTest, IsQualifierType) {
   ConfiguredTokens.push_back(tok::kw_constexpr);
   ConfiguredTokens.push_back(tok::kw_friend);
 
-  static const LangOptions LangOpts{getFormattingLangOpts()};
-
   auto Tokens = annotate(
       "const static inline auto restrict int double long constexpr friend");
   ASSERT_EQ(Tokens.size(), 11u) << Tokens;
 
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[0], ConfiguredTokens, LangOpts));
+      Tokens[0], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[1], ConfiguredTokens, LangOpts));
+      Tokens[1], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[2], ConfiguredTokens, LangOpts));
+      Tokens[2], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[3], ConfiguredTokens, LangOpts));
+      Tokens[3], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[4], ConfiguredTokens, LangOpts));
+      Tokens[4], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[5], ConfiguredTokens, LangOpts));
+      Tokens[5], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[6], ConfiguredTokens, LangOpts));
+      Tokens[6], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[7], ConfiguredTokens, LangOpts));
+      Tokens[7], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[8], ConfiguredTokens, LangOpts));
+      Tokens[8], ConfiguredTokens));
   EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      Tokens[9], ConfiguredTokens, LangOpts));
-
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[0], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[1], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[2], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[3], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[4], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[5], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[6], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[7], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[8], 
LangOpts));
-  EXPECT_TRUE(
-      LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[9], 
LangOpts));
+      Tokens[9], ConfiguredTokens));
+
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[0]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[1]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[2]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[3]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[4]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[5]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[6]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[7]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[8]));
+  EXPECT_TRUE(LeftRightQualifierAlignmentFixer::isQualifierOrType(Tokens[9]));
 
   auto NotTokens = annotate("for while do Foo Bar ");
   ASSERT_EQ(NotTokens.size(), 6u) << Tokens;
 
   EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      NotTokens[0], ConfiguredTokens, LangOpts));
+      NotTokens[0], ConfiguredTokens));
   EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      NotTokens[1], ConfiguredTokens, LangOpts));
+      NotTokens[1], ConfiguredTokens));
   EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      NotTokens[2], ConfiguredTokens, LangOpts));
+      NotTokens[2], ConfiguredTokens));
   EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      NotTokens[3], ConfiguredTokens, LangOpts));
+      NotTokens[3], ConfiguredTokens));
   EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      NotTokens[4], ConfiguredTokens, LangOpts));
+      NotTokens[4], ConfiguredTokens));
   EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-      NotTokens[5], ConfiguredTokens, LangOpts));
-
-  
EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[0],
-                                                                   LangOpts));
-  
EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[1],
-                                                                   LangOpts));
-  
EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[2],
-                                                                   LangOpts));
-  
EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[3],
-                                                                   LangOpts));
-  
EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[4],
-                                                                   LangOpts));
-  
EXPECT_FALSE(LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[5],
-                                                                   LangOpts));
+      NotTokens[5], ConfiguredTokens));
+
+  EXPECT_FALSE(
+      LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[0]));
+  EXPECT_FALSE(
+      LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[1]));
+  EXPECT_FALSE(
+      LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[2]));
+  EXPECT_FALSE(
+      LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[3]));
+  EXPECT_FALSE(
+      LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[4]));
+  EXPECT_FALSE(
+      LeftRightQualifierAlignmentFixer::isQualifierOrType(NotTokens[5]));
 }
 
 TEST_F(QualifierFixerTest, IsMacro) {


        
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