Revert "[clang-format][NFC] Eliminate the IsCpp parameter in all func…

…tions" (#85353)

Reverts #84599

This broke the presubmit bot.

clang/include/clang/Format/Format.h

@@ -5228,9 +5228,6 @@ extern const char *DefaultFormatStyle;
 /// Different builds can modify the value to the preferred styles.
 extern const char *DefaultFallbackStyle;
 
-/// Whether the language is C/C++/Objective-C/Objective-C++.
-extern bool IsCpp;
-
 /// Construct a FormatStyle based on ``StyleName``.
 ///
 /// ``StyleName`` can take several forms:

clang/lib/Format/ContinuationIndenter.cpp

@@ -241,9 +241,7 @@ ContinuationIndenter::ContinuationIndenter(const FormatStyle &Style,
     : Style(Style), Keywords(Keywords), SourceMgr(SourceMgr),
       Whitespaces(Whitespaces), Encoding(Encoding),
       BinPackInconclusiveFunctions(BinPackInconclusiveFunctions),
-      CommentPragmasRegex(Style.CommentPragmas), RawStringFormats(Style) {
-  assert(IsCpp == Style.isCpp());
-}
+      CommentPragmasRegex(Style.CommentPragmas), RawStringFormats(Style) {}
 
 LineState ContinuationIndenter::getInitialState(unsigned FirstIndent,
                                                 unsigned FirstStartColumn,
@@ -408,7 +406,7 @@ bool ContinuationIndenter::mustBreak(const LineState &State) {
   }
   if ((startsNextParameter(Current, Style) || Previous.is(tok::semi) ||
        (Previous.is(TT_TemplateCloser) && Current.is(TT_StartOfName) &&
-        State.Line->First->isNot(TT_AttributeSquare) && IsCpp &&
+        State.Line->First->isNot(TT_AttributeSquare) && Style.isCpp() &&
         // FIXME: This is a temporary workaround for the case where clang-format
         // sets BreakBeforeParameter to avoid bin packing and this creates a
         // completely unnecessary line break after a template type that isn't
@@ -679,8 +677,8 @@ void ContinuationIndenter::addTokenOnCurrentLine(LineState &State, bool DryRun,
   auto &CurrentState = State.Stack.back();
 
   bool DisallowLineBreaksOnThisLine =
-      Style.LambdaBodyIndentation == FormatStyle::LBI_Signature && IsCpp &&
-      [&Current] {
+      Style.LambdaBodyIndentation == FormatStyle::LBI_Signature &&
+      Style.isCpp() && [&Current] {
         // Deal with lambda arguments in C++. The aim here is to ensure that we
         // don't over-indent lambda function bodies when lambdas are passed as
         // arguments to function calls. We do this by ensuring that either all
@@ -1093,7 +1091,7 @@ unsigned ContinuationIndenter::addTokenOnNewLine(LineState &State,
   // Any break on this level means that the parent level has been broken
   // and we need to avoid bin packing there.
   bool NestedBlockSpecialCase =
-      (!IsCpp && Current.is(tok::r_brace) && State.Stack.size() > 1 &&
+      (!Style.isCpp() && Current.is(tok::r_brace) && State.Stack.size() > 1 &&
        State.Stack[State.Stack.size() - 2].NestedBlockInlined) ||
       (Style.Language == FormatStyle::LK_ObjC && Current.is(tok::r_brace) &&
        State.Stack.size() > 1 && !Style.ObjCBreakBeforeNestedBlockParam);

clang/lib/Format/Format.cpp

@@ -3841,15 +3841,13 @@ tooling::Replacements sortUsingDeclarations(const FormatStyle &Style,
 }
 
 LangOptions getFormattingLangOpts(const FormatStyle &Style) {
-  IsCpp = Style.isCpp();
+  LangOptions LangOpts;
 
   FormatStyle::LanguageStandard LexingStd = Style.Standard;
   if (LexingStd == FormatStyle::LS_Auto)
     LexingStd = FormatStyle::LS_Latest;
   if (LexingStd == FormatStyle::LS_Latest)
     LexingStd = FormatStyle::LS_Cpp20;
-
-  LangOptions LangOpts;
   LangOpts.CPlusPlus = 1;
   LangOpts.CPlusPlus11 = LexingStd >= FormatStyle::LS_Cpp11;
   LangOpts.CPlusPlus14 = LexingStd >= FormatStyle::LS_Cpp14;
@@ -3860,8 +3858,10 @@ LangOptions getFormattingLangOpts(const FormatStyle &Style) {
   // the sequence "<::" will be unconditionally treated as "[:".
   // Cf. Lexer::LexTokenInternal.
   LangOpts.Digraphs = LexingStd >= FormatStyle::LS_Cpp11;
+
   LangOpts.LineComment = 1;
-  LangOpts.CXXOperatorNames = 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.
@@ -3943,8 +3943,6 @@ const char *DefaultFormatStyle = "file";
 
 const char *DefaultFallbackStyle = "LLVM";
 
-bool IsCpp = false;
-
 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>>
 loadAndParseConfigFile(StringRef ConfigFile, llvm::vfs::FileSystem *FS,
                        FormatStyle *Style, bool AllowUnknownOptions) {

clang/lib/Format/FormatToken.cpp

@@ -78,15 +78,15 @@ static SmallVector<StringRef> CppNonKeywordTypes = {
     "uint32_t", "uint64_t",  "uint8_t", "uintptr_t",
 };
 
-bool FormatToken::isTypeName() const {
+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 {
-  return isTypeName() || 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 {

clang/lib/Format/FormatToken.h

@@ -676,9 +676,9 @@ struct FormatToken {
   /// Determine whether the token is a simple-type-specifier.
   [[nodiscard]] bool isSimpleTypeSpecifier() const;
 
-  [[nodiscard]] bool isTypeName() const;
+  [[nodiscard]] bool isTypeName(bool IsCpp) const;
 
-  [[nodiscard]] bool isTypeOrIdentifier() const;
+  [[nodiscard]] bool isTypeOrIdentifier(bool IsCpp) const;
 
   bool isObjCAccessSpecifier() const {
     return is(tok::at) && Next &&
@@ -823,7 +823,7 @@ struct FormatToken {
 
   /// Returns whether the token is the left square bracket of a C++
   /// structured binding declaration.
-  bool isCppStructuredBinding() const {
+  bool isCppStructuredBinding(bool IsCpp) const {
     if (!IsCpp || isNot(tok::l_square))
       return false;
     const FormatToken *T = this;

clang/lib/Format/FormatTokenLexer.cpp

@@ -34,7 +34,6 @@ FormatTokenLexer::FormatTokenLexer(
       Encoding(Encoding), Allocator(Allocator), FirstInLineIndex(0),
       FormattingDisabled(false), MacroBlockBeginRegex(Style.MacroBlockBegin),
       MacroBlockEndRegex(Style.MacroBlockEnd) {
-  assert(IsCpp == Style.isCpp());
   Lex.reset(new Lexer(ID, SourceMgr.getBufferOrFake(ID), SourceMgr, LangOpts));
   Lex->SetKeepWhitespaceMode(true);
 
@@ -115,7 +114,7 @@ void FormatTokenLexer::tryMergePreviousTokens() {
     return;
   if (tryMergeForEach())
     return;
-  if (IsCpp && tryTransformTryUsageForC())
+  if (Style.isCpp() && tryTransformTryUsageForC())
     return;
 
   if (Style.isJavaScript() || Style.isCSharp()) {
@@ -1342,7 +1341,7 @@ FormatToken *FormatTokenLexer::getNextToken() {
     Column = FormatTok->LastLineColumnWidth;
   }
 
-  if (IsCpp) {
+  if (Style.isCpp()) {
     auto *Identifier = FormatTok->Tok.getIdentifierInfo();
     auto it = Macros.find(Identifier);
     if (!(Tokens.size() > 0 && Tokens.back()->Tok.getIdentifierInfo() &&

clang/lib/Format/QualifierAlignmentFixer.cpp

@@ -268,20 +268,24 @@ 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()) {
+  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)`
     if (TypeToken->isOneOf(tok::kw_decltype, tok::kw_typeof, tok::kw__Atomic))
       return Tok;
 
     const FormatToken *LastSimpleTypeSpecifier = TypeToken;
-    while (isQualifierOrType(LastSimpleTypeSpecifier->getNextNonComment()))
+    while (isQualifierOrType(LastSimpleTypeSpecifier->getNextNonComment(),
+                             IsCpp)) {
       LastSimpleTypeSpecifier = LastSimpleTypeSpecifier->getNextNonComment();
+    }
 
     rotateTokens(SourceMgr, Fixes, Tok, LastSimpleTypeSpecifier,
                  /*Left=*/false);
@@ -291,7 +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()) {
+  if (PreviousCheck && PreviousCheck->isTypeName(IsCpp)) {
     if (LastQual != Tok)
       rotateTokens(SourceMgr, Fixes, Tok, LastQual, /*Left=*/false);
     return Tok;
@@ -408,11 +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()) {
+  if (const bool IsCpp = Style.isCpp(); TypeToken->isTypeName(IsCpp)) {
     const FormatToken *LastSimpleTypeSpecifier = TypeToken;
     while (isConfiguredQualifierOrType(
         LastSimpleTypeSpecifier->getPreviousNonComment(),
-        ConfiguredQualifierTokens)) {
+        ConfiguredQualifierTokens, IsCpp)) {
       LastSimpleTypeSpecifier =
           LastSimpleTypeSpecifier->getPreviousNonComment();
     }
@@ -527,9 +531,7 @@ LeftRightQualifierAlignmentFixer::LeftRightQualifierAlignmentFixer(
     const std::string &Qualifier,
     const std::vector<tok::TokenKind> &QualifierTokens, bool RightAlign)
     : TokenAnalyzer(Env, Style), Qualifier(Qualifier), RightAlign(RightAlign),
-      ConfiguredQualifierTokens(QualifierTokens) {
-  assert(IsCpp == Style.isCpp());
-}
+      ConfiguredQualifierTokens(QualifierTokens) {}
 
 std::pair<tooling::Replacements, unsigned>
 LeftRightQualifierAlignmentFixer::analyze(
@@ -612,15 +614,16 @@ void prepareLeftRightOrderingForQualifierAlignmentFixer(
   }
 }
 
-bool LeftRightQualifierAlignmentFixer::isQualifierOrType(
-    const FormatToken *Tok) {
+bool LeftRightQualifierAlignmentFixer::isQualifierOrType(const FormatToken *Tok,
+                                                         bool IsCpp) {
   return Tok &&
-         (Tok->isTypeName() || Tok->is(tok::kw_auto) || isQualifier(Tok));
+         (Tok->isTypeName(IsCpp) || Tok->is(tok::kw_auto) || isQualifier(Tok));
 }
 
 bool LeftRightQualifierAlignmentFixer::isConfiguredQualifierOrType(
-    const FormatToken *Tok, const std::vector<tok::TokenKind> &Qualifiers) {
-  return Tok && (Tok->isTypeName() || Tok->is(tok::kw_auto) ||
+    const FormatToken *Tok, const std::vector<tok::TokenKind> &Qualifiers,
+    bool IsCpp) {
+  return Tok && (Tok->isTypeName(IsCpp) || Tok->is(tok::kw_auto) ||
                  isConfiguredQualifier(Tok, Qualifiers));
 }
 

clang/lib/Format/QualifierAlignmentFixer.h

@@ -71,10 +71,11 @@ class LeftRightQualifierAlignmentFixer : public TokenAnalyzer {
                                  tok::TokenKind QualifierType);
 
   // Is the Token a simple or qualifier type
-  static bool isQualifierOrType(const FormatToken *Tok);
+  static bool isQualifierOrType(const FormatToken *Tok, bool IsCpp = true);
   static bool
   isConfiguredQualifierOrType(const FormatToken *Tok,
-                              const std::vector<tok::TokenKind> &Qualifiers);
+                              const std::vector<tok::TokenKind> &Qualifiers,
+                              bool IsCpp = true);
 
   // Is the Token likely a Macro
   static bool isPossibleMacro(const FormatToken *Tok);