[clang-tidy][NFC] Fix llvm-prefer-static-over-anonymous-namespace warnings 4/N (#164158)

Continue https://github.com/llvm/llvm-project/pull/153885.

clang-tools-extra/clang-tidy/abseil/FasterStrsplitDelimiterCheck.cpp

@@ -20,8 +20,10 @@ namespace {
 
 AST_MATCHER(StringLiteral, lengthIsOne) { return Node.getLength() == 1; }
 
-std::optional<std::string> makeCharacterLiteral(const StringLiteral *Literal,
-                                                const ASTContext &Context) {
+} // anonymous namespace
+
+static std::optional<std::string>
+makeCharacterLiteral(const StringLiteral *Literal, const ASTContext &Context) {
   assert(Literal->getLength() == 1 &&
          "Only single character string should be matched");
   assert(Literal->getCharByteWidth() == 1 &&
@@ -53,8 +55,6 @@ std::optional<std::string> makeCharacterLiteral(const StringLiteral *Literal,
   return Result;
 }
 
-} // anonymous namespace
-
 void FasterStrsplitDelimiterCheck::registerMatchers(MatchFinder *Finder) {
   // Binds to one character string literals.
   const auto SingleChar =

clang-tools-extra/clang-tidy/bugprone/ChainedComparisonCheck.cpp

@@ -51,6 +51,8 @@ private:
   void extract(const CXXOperatorCallExpr *Op);
 };
 
+} // namespace
+
 void ChainedComparisonData::add(const Expr *Operand) {
   if (!Name.empty())
     Name += ' ';
@@ -111,8 +113,6 @@ void ChainedComparisonData::extract(const Expr *Op) {
   }
 }
 
-} // namespace
-
 void ChainedComparisonCheck::registerMatchers(MatchFinder *Finder) {
   const auto OperatorMatcher = expr(anyOf(
       binaryOperator(isComparisonOperator(),

clang-tools-extra/clang-tidy/bugprone/DanglingHandleCheck.cpp

@@ -17,9 +17,7 @@ using namespace clang::tidy::matchers;
 
 namespace clang::tidy::bugprone {
 
-namespace {
-
-ast_matchers::internal::BindableMatcher<Stmt>
+static ast_matchers::internal::BindableMatcher<Stmt>
 handleFrom(const ast_matchers::internal::Matcher<RecordDecl> &IsAHandle,
            const ast_matchers::internal::Matcher<Expr> &Arg) {
   return expr(
@@ -31,7 +29,7 @@ handleFrom(const ast_matchers::internal::Matcher<RecordDecl> &IsAHandle,
                               on(Arg))));
 }
 
-ast_matchers::internal::Matcher<Stmt> handleFromTemporaryValue(
+static ast_matchers::internal::Matcher<Stmt> handleFromTemporaryValue(
     const ast_matchers::internal::Matcher<RecordDecl> &IsAHandle) {
 
   const auto TemporaryExpr = anyOf(
@@ -49,22 +47,22 @@ ast_matchers::internal::Matcher<Stmt> handleFromTemporaryValue(
   return handleFrom(IsAHandle, anyOf(TemporaryExpr, TemporaryTernary));
 }
 
-ast_matchers::internal::Matcher<RecordDecl> isASequence() {
+static ast_matchers::internal::Matcher<RecordDecl> isASequence() {
   return hasAnyName("::std::deque", "::std::forward_list", "::std::list",
                     "::std::vector");
 }
 
-ast_matchers::internal::Matcher<RecordDecl> isASet() {
+static ast_matchers::internal::Matcher<RecordDecl> isASet() {
   return hasAnyName("::std::set", "::std::multiset", "::std::unordered_set",
                     "::std::unordered_multiset");
 }
 
-ast_matchers::internal::Matcher<RecordDecl> isAMap() {
+static ast_matchers::internal::Matcher<RecordDecl> isAMap() {
   return hasAnyName("::std::map", "::std::multimap", "::std::unordered_map",
                     "::std::unordered_multimap");
 }
 
-ast_matchers::internal::BindableMatcher<Stmt> makeContainerMatcher(
+static ast_matchers::internal::BindableMatcher<Stmt> makeContainerMatcher(
     const ast_matchers::internal::Matcher<RecordDecl> &IsAHandle) {
   // This matcher could be expanded to detect:
   //  - Constructors: eg. vector<string_view>(3, string("A"));
@@ -91,8 +89,6 @@ ast_matchers::internal::BindableMatcher<Stmt> makeContainerMatcher(
                               hasOverloadedOperatorName("[]"))));
 }
 
-} // anonymous namespace
-
 DanglingHandleCheck::DanglingHandleCheck(StringRef Name,
                                          ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),

clang-tools-extra/clang-tidy/bugprone/SizeofExpressionCheck.cpp

@@ -50,15 +50,15 @@ AST_MATCHER_P2(Expr, hasSizeOfDescendant, int, Depth,
 
 AST_MATCHER(Expr, offsetOfExpr) { return isa<OffsetOfExpr>(Node); }
 
-CharUnits getSizeOfType(const ASTContext &Ctx, const Type *Ty) {
+} // namespace
+
+static CharUnits getSizeOfType(const ASTContext &Ctx, const Type *Ty) {
   if (!Ty || Ty->isIncompleteType() || Ty->isDependentType() ||
       isa<DependentSizedArrayType>(Ty) || !Ty->isConstantSizeType())
     return CharUnits::Zero();
   return Ctx.getTypeSizeInChars(Ty);
 }
 
-} // namespace
-
 SizeofExpressionCheck::SizeofExpressionCheck(StringRef Name,
                                              ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),

clang-tools-extra/clang-tidy/bugprone/StringConstructorCheck.cpp

@@ -20,8 +20,9 @@ namespace {
 AST_MATCHER_P(IntegerLiteral, isBiggerThan, unsigned, N) {
   return Node.getValue().getZExtValue() > N;
 }
+} // namespace
 
-const char DefaultStringNames[] =
+static const char DefaultStringNames[] =
     "::std::basic_string;::std::basic_string_view";
 
 static std::vector<StringRef>
@@ -36,8 +37,6 @@ removeNamespaces(const std::vector<StringRef> &Names) {
   return Result;
 }
 
-} // namespace
-
 StringConstructorCheck::StringConstructorCheck(StringRef Name,
                                                ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),

clang-tools-extra/clang-tidy/google/GlobalVariableDeclarationCheck.cpp

@@ -21,7 +21,9 @@ namespace {
 
 AST_MATCHER(VarDecl, isLocalVariable) { return Node.isLocalVarDecl(); }
 
-FixItHint generateFixItHint(const VarDecl *Decl, bool IsConst) {
+} // namespace
+
+static FixItHint generateFixItHint(const VarDecl *Decl, bool IsConst) {
   if (IsConst && (Decl->getStorageClass() != SC_Static)) {
     // No fix available if it is not a static constant, since it is difficult
     // to determine the proper fix in this case.
@@ -52,7 +54,6 @@ FixItHint generateFixItHint(const VarDecl *Decl, bool IsConst) {
       CharSourceRange::getTokenRange(SourceRange(Decl->getLocation())),
       llvm::StringRef(NewName));
 }
-} // namespace
 
 void GlobalVariableDeclarationCheck::registerMatchers(MatchFinder *Finder) {
   // need to add two matchers since we need to bind different ids to distinguish

clang-tools-extra/clang-tidy/llvmlibc/InlineFunctionDeclCheck.cpp

@@ -16,9 +16,7 @@ using namespace clang::ast_matchers;
 
 namespace clang::tidy::llvm_libc {
 
-namespace {
-
-const TemplateParameterList *
+static const TemplateParameterList *
 getLastTemplateParameterList(const FunctionDecl *FuncDecl) {
   const TemplateParameterList *ReturnList =
       FuncDecl->getDescribedTemplateParams();
@@ -35,8 +33,6 @@ getLastTemplateParameterList(const FunctionDecl *FuncDecl) {
   return ReturnList;
 }
 
-} // namespace
-
 InlineFunctionDeclCheck::InlineFunctionDeclCheck(StringRef Name,
                                                  ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),

clang-tools-extra/clang-tidy/misc/UnusedParametersCheck.cpp

@@ -22,15 +22,14 @@ using namespace clang::ast_matchers;
 
 namespace clang::tidy::misc {
 
-namespace {
-bool isOverrideMethod(const FunctionDecl *Function) {
+static bool isOverrideMethod(const FunctionDecl *Function) {
   if (const auto *MD = dyn_cast<CXXMethodDecl>(Function))
     return MD->size_overridden_methods() > 0 || MD->hasAttr<OverrideAttr>();
   return false;
 }
 
-bool hasAttrAfterParam(const SourceManager *SourceManager,
-                       const ParmVarDecl *Param) {
+static bool hasAttrAfterParam(const SourceManager *SourceManager,
+                              const ParmVarDecl *Param) {
   for (const auto *Attr : Param->attrs()) {
     if (SourceManager->isBeforeInTranslationUnit(Param->getLocation(),
                                                  Attr->getLocation())) {
@@ -39,7 +38,6 @@ bool hasAttrAfterParam(const SourceManager *SourceManager,
   }
   return false;
 }
-} // namespace
 
 void UnusedParametersCheck::registerMatchers(MatchFinder *Finder) {
   Finder->addMatcher(functionDecl(isDefinition(), hasBody(stmt()),

clang-tools-extra/clang-tidy/modernize/RedundantVoidArgCheck.cpp

@@ -14,10 +14,8 @@ using namespace clang::ast_matchers;
 
 namespace clang::tidy::modernize {
 
-namespace {
-
 // Determine if the given QualType is a nullary function or pointer to same.
-bool protoTypeHasNoParms(QualType QT) {
+static bool protoTypeHasNoParms(QualType QT) {
   if (const auto *PT = QT->getAs<PointerType>())
     QT = PT->getPointeeType();
   if (auto *MPT = QT->getAs<MemberPointerType>())
@@ -27,16 +25,14 @@ bool protoTypeHasNoParms(QualType QT) {
   return false;
 }
 
-const char FunctionId[] = "function";
-const char TypedefId[] = "typedef";
-const char FieldId[] = "field";
-const char VarId[] = "var";
-const char NamedCastId[] = "named-cast";
-const char CStyleCastId[] = "c-style-cast";
-const char ExplicitCastId[] = "explicit-cast";
-const char LambdaId[] = "lambda";
-
-} // namespace
+static const char FunctionId[] = "function";
+static const char TypedefId[] = "typedef";
+static const char FieldId[] = "field";
+static const char VarId[] = "var";
+static const char NamedCastId[] = "named-cast";
+static const char CStyleCastId[] = "c-style-cast";
+static const char ExplicitCastId[] = "explicit-cast";
+static const char LambdaId[] = "lambda";
 
 void RedundantVoidArgCheck::registerMatchers(MatchFinder *Finder) {
   Finder->addMatcher(functionDecl(parameterCountIs(0), unless(isImplicit()),

clang-tools-extra/clang-tidy/modernize/UseStdNumbersCheck.cpp

@@ -255,8 +255,10 @@ struct MatchBuilder {
   double DiffThreshold;
 };
 
-std::string getCode(const StringRef Constant, const bool IsFloat,
-                    const bool IsLongDouble) {
+} // namespace
+
+static std::string getCode(const StringRef Constant, const bool IsFloat,
+                           const bool IsLongDouble) {
   if (IsFloat) {
     return ("std::numbers::" + Constant + "_v<float>").str();
   }
@@ -266,9 +268,9 @@ std::string getCode(const StringRef Constant, const bool IsFloat,
   return ("std::numbers::" + Constant).str();
 }
 
-bool isRangeOfCompleteMacro(const clang::SourceRange &Range,
-                            const clang::SourceManager &SM,
-                            const clang::LangOptions &LO) {
+static bool isRangeOfCompleteMacro(const clang::SourceRange &Range,
+                                   const clang::SourceManager &SM,
+                                   const clang::LangOptions &LO) {
   if (!Range.getBegin().isMacroID()) {
     return false;
   }
@@ -287,8 +289,6 @@ bool isRangeOfCompleteMacro(const clang::SourceRange &Range,
   return true;
 }
 
-} // namespace
-
 namespace clang::tidy::modernize {
 UseStdNumbersCheck::UseStdNumbersCheck(const StringRef Name,
                                        ClangTidyContext *const Context)

clang-tools-extra/clang-tidy/performance/EnumSizeCheck.cpp

@@ -35,7 +35,8 @@ const std::uint64_t Min32 =
     std::imaxabs(std::numeric_limits<std::int32_t>::min());
 const std::uint64_t Max32 = std::numeric_limits<std::int32_t>::max();
 
-std::pair<const char *, std::uint32_t>
+} // namespace
+static std::pair<const char *, std::uint32_t>
 getNewType(std::size_t Size, std::uint64_t Min, std::uint64_t Max) noexcept {
   if (Min) {
     if (Min <= Min8 && Max <= Max8) {
@@ -75,8 +76,6 @@ getNewType(std::size_t Size, std::uint64_t Min, std::uint64_t Max) noexcept {
   return {"std::uint8_t", sizeof(std::uint8_t)};
 }
 
-} // namespace
-
 EnumSizeCheck::EnumSizeCheck(StringRef Name, ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),
       EnumIgnoreList(

clang-tools-extra/clang-tidy/readability/AvoidConstParamsInDecls.cpp

@@ -15,9 +15,8 @@
 using namespace clang::ast_matchers;
 
 namespace clang::tidy::readability {
-namespace {
 
-SourceRange getTypeRange(const ParmVarDecl &Param) {
+static SourceRange getTypeRange(const ParmVarDecl &Param) {
   return {Param.getBeginLoc(), Param.getLocation().getLocWithOffset(-1)};
 }
 
@@ -39,8 +38,6 @@ findConstToRemove(const ParmVarDecl &Param,
       tok::kw_const, FileRange, *Result.Context, *Result.SourceManager);
 }
 
-} // namespace
-
 void AvoidConstParamsInDecls::storeOptions(ClangTidyOptions::OptionMap &Opts) {
   Options.store(Opts, "IgnoreMacros", IgnoreMacros);
 }

clang-tools-extra/clang-tidy/readability/RedundantSmartptrGetCheck.cpp

@@ -129,8 +129,7 @@ void RedundantSmartptrGetCheck::registerMatchers(MatchFinder *Finder) {
   registerMatchersForGetEquals(Finder, this);
 }
 
-namespace {
-bool allReturnTypesMatch(const MatchFinder::MatchResult &Result) {
+static bool allReturnTypesMatch(const MatchFinder::MatchResult &Result) {
   if (Result.Nodes.getNodeAs<Decl>("duck_typing") == nullptr)
     return true;
   // Verify that the types match.
@@ -145,7 +144,6 @@ bool allReturnTypesMatch(const MatchFinder::MatchResult &Result) {
       Result.Nodes.getNodeAs<Type>("getType")->getUnqualifiedDesugaredType();
   return OpArrowType == OpStarType && OpArrowType == GetType;
 }
-} // namespace
 
 void RedundantSmartptrGetCheck::check(const MatchFinder::MatchResult &Result) {
   if (!allReturnTypesMatch(Result))

clang-tools-extra/clang-tidy/readability/SimplifyBooleanExprCheck.cpp

@@ -21,20 +21,17 @@ using namespace clang::ast_matchers;
 
 namespace clang::tidy::readability {
 
-namespace {
-
-StringRef getText(const ASTContext &Context, SourceRange Range) {
+static StringRef getText(const ASTContext &Context, SourceRange Range) {
   return Lexer::getSourceText(CharSourceRange::getTokenRange(Range),
                               Context.getSourceManager(),
                               Context.getLangOpts());
 }
 
-template <typename T> StringRef getText(const ASTContext &Context, T &Node) {
+template <typename T>
+static StringRef getText(const ASTContext &Context, T &Node) {
   return getText(Context, Node.getSourceRange());
 }
 
-} // namespace
-
 static constexpr char SimplifyOperatorDiagnostic[] =
     "redundant boolean literal supplied to boolean operator";
 static constexpr char SimplifyConditionDiagnostic[] =

clang-tools-extra/clang-tidy/utils/ExprSequence.cpp

@@ -49,10 +49,8 @@ static SmallVector<const Stmt *, 1> getParentStmts(const Stmt *S,
   return Result;
 }
 
-namespace {
-
-bool isDescendantOrEqual(const Stmt *Descendant, const Stmt *Ancestor,
-                         ASTContext *Context) {
+static bool isDescendantOrEqual(const Stmt *Descendant, const Stmt *Ancestor,
+                                ASTContext *Context) {
   if (Descendant == Ancestor)
     return true;
   return llvm::any_of(getParentStmts(Descendant, Context),
@@ -61,15 +59,15 @@ bool isDescendantOrEqual(const Stmt *Descendant, const Stmt *Ancestor,
                       });
 }
 
-bool isDescendantOfArgs(const Stmt *Descendant, const CallExpr *Call,
-                        ASTContext *Context) {
+static bool isDescendantOfArgs(const Stmt *Descendant, const CallExpr *Call,
+                               ASTContext *Context) {
   return llvm::any_of(Call->arguments(),
                       [Descendant, Context](const Expr *Arg) {
                         return isDescendantOrEqual(Descendant, Arg, Context);
                       });
 }
 
-llvm::SmallVector<const InitListExpr *>
+static llvm::SmallVector<const InitListExpr *>
 getAllInitListForms(const InitListExpr *InitList) {
   llvm::SmallVector<const InitListExpr *> Result = {InitList};
   if (const InitListExpr *AltForm = InitList->getSyntacticForm())
@@ -79,8 +77,6 @@ getAllInitListForms(const InitListExpr *InitList) {
   return Result;
 }
 
-} // namespace
-
 ExprSequence::ExprSequence(const CFG *TheCFG, const Stmt *Root,
                            ASTContext *TheContext)
     : Context(TheContext), Root(Root) {

clang-tools-extra/clang-tidy/utils/IncludeSorter.cpp

@@ -15,9 +15,8 @@
 namespace clang::tidy {
 namespace utils {
 
-namespace {
-
-StringRef removeFirstSuffix(StringRef Str, ArrayRef<const char *> Suffixes) {
+static StringRef removeFirstSuffix(StringRef Str,
+                                   ArrayRef<const char *> Suffixes) {
   for (StringRef Suffix : Suffixes) {
     if (Str.consume_back(Suffix))
       return Str;
@@ -25,7 +24,8 @@ StringRef removeFirstSuffix(StringRef Str, ArrayRef<const char *> Suffixes) {
   return Str;
 }
 
-StringRef makeCanonicalName(StringRef Str, IncludeSorter::IncludeStyle Style) {
+static StringRef makeCanonicalName(StringRef Str,
+                                   IncludeSorter::IncludeStyle Style) {
   // The list of suffixes to remove from source file names to get the
   // "canonical" file names.
   // E.g. tools/sort_includes.cc and tools/sort_includes_test.cc
@@ -56,12 +56,12 @@ StringRef makeCanonicalName(StringRef Str, IncludeSorter::IncludeStyle Style) {
 }
 
 // Scan to the end of the line and return the offset of the next line.
-size_t findNextLine(const char *Text) {
+static size_t findNextLine(const char *Text) {
   size_t EOLIndex = std::strcspn(Text, "\n");
   return Text[EOLIndex] == '\0' ? EOLIndex : EOLIndex + 1;
 }
 
-IncludeSorter::IncludeKinds
+static IncludeSorter::IncludeKinds
 determineIncludeKind(StringRef CanonicalFile, StringRef IncludeFile,
                      bool IsAngled, IncludeSorter::IncludeStyle Style) {
   // Compute the two "canonical" forms of the include's filename sans extension.
@@ -101,8 +101,8 @@ determineIncludeKind(StringRef CanonicalFile, StringRef IncludeFile,
   return IncludeSorter::IK_NonSystemInclude;
 }
 
-int compareHeaders(StringRef LHS, StringRef RHS,
-                   IncludeSorter::IncludeStyle Style) {
+static int compareHeaders(StringRef LHS, StringRef RHS,
+                          IncludeSorter::IncludeStyle Style) {
   if (Style == IncludeSorter::IncludeStyle::IS_Google_ObjC) {
     const std::pair<const char *, const char *> &Mismatch =
         std::mismatch(LHS.begin(), LHS.end(), RHS.begin(), RHS.end());
@@ -118,8 +118,6 @@ int compareHeaders(StringRef LHS, StringRef RHS,
   return LHS.compare(RHS);
 }
 
-} // namespace
-
 IncludeSorter::IncludeSorter(const SourceManager *SourceMgr,
                              const FileID FileID, StringRef FileName,
                              IncludeStyle Style)