- //===--- TextNodeDumper.h - Printing of AST nodes -------------------------===// 
- // 
- // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 
- // See https://llvm.org/LICENSE.txt for license information. 
- // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 
- // 
- //===----------------------------------------------------------------------===// 
- // 
- // This file implements AST dumping of components of individual AST nodes. 
- // 
- //===----------------------------------------------------------------------===// 
-   
- #ifndef LLVM_CLANG_AST_TEXTNODEDUMPER_H 
- #define LLVM_CLANG_AST_TEXTNODEDUMPER_H 
-   
- #include "clang/AST/ASTContext.h" 
- #include "clang/AST/ASTDumperUtils.h" 
- #include "clang/AST/AttrVisitor.h" 
- #include "clang/AST/CommentCommandTraits.h" 
- #include "clang/AST/CommentVisitor.h" 
- #include "clang/AST/DeclVisitor.h" 
- #include "clang/AST/ExprConcepts.h" 
- #include "clang/AST/ExprCXX.h" 
- #include "clang/AST/StmtVisitor.h" 
- #include "clang/AST/TemplateArgumentVisitor.h" 
- #include "clang/AST/Type.h" 
- #include "clang/AST/TypeVisitor.h" 
-   
- namespace clang { 
-   
- class APValue; 
-   
- class TextTreeStructure { 
-   raw_ostream &OS; 
-   const bool ShowColors; 
-   
-   /// Pending[i] is an action to dump an entity at level i. 
-   llvm::SmallVector<std::function<void(bool IsLastChild)>, 32> Pending; 
-   
-   /// Indicates whether we're at the top level. 
-   bool TopLevel = true; 
-   
-   /// Indicates if we're handling the first child after entering a new depth. 
-   bool FirstChild = true; 
-   
-   /// Prefix for currently-being-dumped entity. 
-   std::string Prefix; 
-   
- public: 
-   /// Add a child of the current node.  Calls DoAddChild without arguments 
-   template <typename Fn> void AddChild(Fn DoAddChild) { 
-     return AddChild("", DoAddChild); 
-   } 
-   
-   /// Add a child of the current node with an optional label. 
-   /// Calls DoAddChild without arguments. 
-   template <typename Fn> void AddChild(StringRef Label, Fn DoAddChild) { 
-     // If we're at the top level, there's nothing interesting to do; just 
-     // run the dumper. 
-     if (TopLevel) { 
-       TopLevel = false; 
-       DoAddChild(); 
-       while (!Pending.empty()) { 
-         Pending.back()(true); 
-         Pending.pop_back(); 
-       } 
-       Prefix.clear(); 
-       OS << "\n"; 
-       TopLevel = true; 
-       return; 
-     } 
-   
-     auto DumpWithIndent = [this, DoAddChild, 
-                            Label(Label.str())](bool IsLastChild) { 
-       // Print out the appropriate tree structure and work out the prefix for 
-       // children of this node. For instance: 
-       // 
-       //   A        Prefix = "" 
-       //   |-B      Prefix = "| " 
-       //   | `-C    Prefix = "|   " 
-       //   `-D      Prefix = "  " 
-       //     |-E    Prefix = "  | " 
-       //     `-F    Prefix = "    " 
-       //   G        Prefix = "" 
-       // 
-       // Note that the first level gets no prefix. 
-       { 
-         OS << '\n'; 
-         ColorScope Color(OS, ShowColors, IndentColor); 
-         OS << Prefix << (IsLastChild ? '`' : '|') << '-'; 
-         if (!Label.empty()) 
-           OS << Label << ": "; 
-   
-         this->Prefix.push_back(IsLastChild ? ' ' : '|'); 
-         this->Prefix.push_back(' '); 
-       } 
-   
-       FirstChild = true; 
-       unsigned Depth = Pending.size(); 
-   
-       DoAddChild(); 
-   
-       // If any children are left, they're the last at their nesting level. 
-       // Dump those ones out now. 
-       while (Depth < Pending.size()) { 
-         Pending.back()(true); 
-         this->Pending.pop_back(); 
-       } 
-   
-       // Restore the old prefix. 
-       this->Prefix.resize(Prefix.size() - 2); 
-     }; 
-   
-     if (FirstChild) { 
-       Pending.push_back(std::move(DumpWithIndent)); 
-     } else { 
-       Pending.back()(false); 
-       Pending.back() = std::move(DumpWithIndent); 
-     } 
-     FirstChild = false; 
-   } 
-   
-   TextTreeStructure(raw_ostream &OS, bool ShowColors) 
-       : OS(OS), ShowColors(ShowColors) {} 
- }; 
-   
- class TextNodeDumper 
-     : public TextTreeStructure, 
-       public comments::ConstCommentVisitor<TextNodeDumper, void, 
-                                            const comments::FullComment *>, 
-       public ConstAttrVisitor<TextNodeDumper>, 
-       public ConstTemplateArgumentVisitor<TextNodeDumper>, 
-       public ConstStmtVisitor<TextNodeDumper>, 
-       public TypeVisitor<TextNodeDumper>, 
-       public ConstDeclVisitor<TextNodeDumper> { 
-   raw_ostream &OS; 
-   const bool ShowColors; 
-   
-   /// Keep track of the last location we print out so that we can 
-   /// print out deltas from then on out. 
-   const char *LastLocFilename = ""; 
-   unsigned LastLocLine = ~0U; 
-   
-   /// \p Context, \p SM, and \p Traits can be null. This is because we want 
-   /// to be able to call \p dump() in a debugger without having to pass the 
-   /// \p ASTContext to \p dump. Not all parts of the AST dump output will be 
-   /// available without the \p ASTContext. 
-   const ASTContext *Context = nullptr; 
-   const SourceManager *SM = nullptr; 
-   
-   /// The policy to use for printing; can be defaulted. 
-   PrintingPolicy PrintPolicy = LangOptions(); 
-   
-   const comments::CommandTraits *Traits = nullptr; 
-   
-   const char *getCommandName(unsigned CommandID); 
-   void printFPOptions(FPOptionsOverride FPO); 
-   
-   void dumpAPValueChildren(const APValue &Value, QualType Ty, 
-                            const APValue &(*IdxToChildFun)(const APValue &, 
-                                                            unsigned), 
-                            unsigned NumChildren, StringRef LabelSingular, 
-                            StringRef LabelPlurial); 
-   
- public: 
-   TextNodeDumper(raw_ostream &OS, const ASTContext &Context, bool ShowColors); 
-   TextNodeDumper(raw_ostream &OS, bool ShowColors); 
-   
-   void Visit(const comments::Comment *C, const comments::FullComment *FC); 
-   
-   void Visit(const Attr *A); 
-   
-   void Visit(const TemplateArgument &TA, SourceRange R, 
-              const Decl *From = nullptr, StringRef Label = {}); 
-   
-   void Visit(const Stmt *Node); 
-   
-   void Visit(const Type *T); 
-   
-   void Visit(QualType T); 
-   
-   void Visit(const Decl *D); 
-   
-   void Visit(const CXXCtorInitializer *Init); 
-   
-   void Visit(const OMPClause *C); 
-   
-   void Visit(const BlockDecl::Capture &C); 
-   
-   void Visit(const GenericSelectionExpr::ConstAssociation &A); 
-   
-   void Visit(const concepts::Requirement *R); 
-   
-   void Visit(const APValue &Value, QualType Ty); 
-   
-   void dumpPointer(const void *Ptr); 
-   void dumpLocation(SourceLocation Loc); 
-   void dumpSourceRange(SourceRange R); 
-   void dumpBareType(QualType T, bool Desugar = true); 
-   void dumpType(QualType T); 
-   void dumpBareDeclRef(const Decl *D); 
-   void dumpName(const NamedDecl *ND); 
-   void dumpAccessSpecifier(AccessSpecifier AS); 
-   void dumpCleanupObject(const ExprWithCleanups::CleanupObject &C); 
-   
-   void dumpDeclRef(const Decl *D, StringRef Label = {}); 
-   
-   void visitTextComment(const comments::TextComment *C, 
-                         const comments::FullComment *); 
-   void visitInlineCommandComment(const comments::InlineCommandComment *C, 
-                                  const comments::FullComment *); 
-   void visitHTMLStartTagComment(const comments::HTMLStartTagComment *C, 
-                                 const comments::FullComment *); 
-   void visitHTMLEndTagComment(const comments::HTMLEndTagComment *C, 
-                               const comments::FullComment *); 
-   void visitBlockCommandComment(const comments::BlockCommandComment *C, 
-                                 const comments::FullComment *); 
-   void visitParamCommandComment(const comments::ParamCommandComment *C, 
-                                 const comments::FullComment *FC); 
-   void visitTParamCommandComment(const comments::TParamCommandComment *C, 
-                                  const comments::FullComment *FC); 
-   void visitVerbatimBlockComment(const comments::VerbatimBlockComment *C, 
-                                  const comments::FullComment *); 
-   void 
-   visitVerbatimBlockLineComment(const comments::VerbatimBlockLineComment *C, 
-                                 const comments::FullComment *); 
-   void visitVerbatimLineComment(const comments::VerbatimLineComment *C, 
-                                 const comments::FullComment *); 
-   
- // Implements Visit methods for Attrs. 
- #include "clang/AST/AttrTextNodeDump.inc" 
-   
-   void VisitNullTemplateArgument(const TemplateArgument &TA); 
-   void VisitTypeTemplateArgument(const TemplateArgument &TA); 
-   void VisitDeclarationTemplateArgument(const TemplateArgument &TA); 
-   void VisitNullPtrTemplateArgument(const TemplateArgument &TA); 
-   void VisitIntegralTemplateArgument(const TemplateArgument &TA); 
-   void VisitTemplateTemplateArgument(const TemplateArgument &TA); 
-   void VisitTemplateExpansionTemplateArgument(const TemplateArgument &TA); 
-   void VisitExpressionTemplateArgument(const TemplateArgument &TA); 
-   void VisitPackTemplateArgument(const TemplateArgument &TA); 
-   
-   void VisitIfStmt(const IfStmt *Node); 
-   void VisitSwitchStmt(const SwitchStmt *Node); 
-   void VisitWhileStmt(const WhileStmt *Node); 
-   void VisitLabelStmt(const LabelStmt *Node); 
-   void VisitGotoStmt(const GotoStmt *Node); 
-   void VisitCaseStmt(const CaseStmt *Node); 
-   void VisitCompoundStmt(const CompoundStmt *Node); 
-   void VisitConstantExpr(const ConstantExpr *Node); 
-   void VisitCallExpr(const CallExpr *Node); 
-   void VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *Node); 
-   void VisitCastExpr(const CastExpr *Node); 
-   void VisitImplicitCastExpr(const ImplicitCastExpr *Node); 
-   void VisitDeclRefExpr(const DeclRefExpr *Node); 
-   void VisitSYCLUniqueStableNameExpr(const SYCLUniqueStableNameExpr *Node); 
-   void VisitPredefinedExpr(const PredefinedExpr *Node); 
-   void VisitCharacterLiteral(const CharacterLiteral *Node); 
-   void VisitIntegerLiteral(const IntegerLiteral *Node); 
-   void VisitFixedPointLiteral(const FixedPointLiteral *Node); 
-   void VisitFloatingLiteral(const FloatingLiteral *Node); 
-   void VisitStringLiteral(const StringLiteral *Str); 
-   void VisitInitListExpr(const InitListExpr *ILE); 
-   void VisitGenericSelectionExpr(const GenericSelectionExpr *E); 
-   void VisitUnaryOperator(const UnaryOperator *Node); 
-   void VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *Node); 
-   void VisitMemberExpr(const MemberExpr *Node); 
-   void VisitExtVectorElementExpr(const ExtVectorElementExpr *Node); 
-   void VisitBinaryOperator(const BinaryOperator *Node); 
-   void VisitCompoundAssignOperator(const CompoundAssignOperator *Node); 
-   void VisitAddrLabelExpr(const AddrLabelExpr *Node); 
-   void VisitCXXNamedCastExpr(const CXXNamedCastExpr *Node); 
-   void VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *Node); 
-   void VisitCXXThisExpr(const CXXThisExpr *Node); 
-   void VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *Node); 
-   void VisitCXXStaticCastExpr(const CXXStaticCastExpr *Node); 
-   void VisitCXXUnresolvedConstructExpr(const CXXUnresolvedConstructExpr *Node); 
-   void VisitCXXConstructExpr(const CXXConstructExpr *Node); 
-   void VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *Node); 
-   void VisitCXXNewExpr(const CXXNewExpr *Node); 
-   void VisitCXXDeleteExpr(const CXXDeleteExpr *Node); 
-   void VisitTypeTraitExpr(const TypeTraitExpr *Node); 
-   void VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *Node); 
-   void VisitExpressionTraitExpr(const ExpressionTraitExpr *Node); 
-   void VisitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *Node); 
-   void VisitExprWithCleanups(const ExprWithCleanups *Node); 
-   void VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *Node); 
-   void VisitSizeOfPackExpr(const SizeOfPackExpr *Node); 
-   void 
-   VisitCXXDependentScopeMemberExpr(const CXXDependentScopeMemberExpr *Node); 
-   void VisitObjCAtCatchStmt(const ObjCAtCatchStmt *Node); 
-   void VisitObjCEncodeExpr(const ObjCEncodeExpr *Node); 
-   void VisitObjCMessageExpr(const ObjCMessageExpr *Node); 
-   void VisitObjCBoxedExpr(const ObjCBoxedExpr *Node); 
-   void VisitObjCSelectorExpr(const ObjCSelectorExpr *Node); 
-   void VisitObjCProtocolExpr(const ObjCProtocolExpr *Node); 
-   void VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *Node); 
-   void VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *Node); 
-   void VisitObjCIvarRefExpr(const ObjCIvarRefExpr *Node); 
-   void VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *Node); 
-   void VisitOMPIteratorExpr(const OMPIteratorExpr *Node); 
-   void VisitConceptSpecializationExpr(const ConceptSpecializationExpr *Node); 
-   void VisitRequiresExpr(const RequiresExpr *Node); 
-   
-   void VisitRValueReferenceType(const ReferenceType *T); 
-   void VisitArrayType(const ArrayType *T); 
-   void VisitConstantArrayType(const ConstantArrayType *T); 
-   void VisitVariableArrayType(const VariableArrayType *T); 
-   void VisitDependentSizedArrayType(const DependentSizedArrayType *T); 
-   void VisitDependentSizedExtVectorType(const DependentSizedExtVectorType *T); 
-   void VisitVectorType(const VectorType *T); 
-   void VisitFunctionType(const FunctionType *T); 
-   void VisitFunctionProtoType(const FunctionProtoType *T); 
-   void VisitUnresolvedUsingType(const UnresolvedUsingType *T); 
-   void VisitUsingType(const UsingType *T); 
-   void VisitTypedefType(const TypedefType *T); 
-   void VisitUnaryTransformType(const UnaryTransformType *T); 
-   void VisitTagType(const TagType *T); 
-   void VisitTemplateTypeParmType(const TemplateTypeParmType *T); 
-   void VisitSubstTemplateTypeParmType(const SubstTemplateTypeParmType *T); 
-   void 
-   VisitSubstTemplateTypeParmPackType(const SubstTemplateTypeParmPackType *T); 
-   void VisitAutoType(const AutoType *T); 
-   void VisitDeducedTemplateSpecializationType( 
-       const DeducedTemplateSpecializationType *T); 
-   void VisitTemplateSpecializationType(const TemplateSpecializationType *T); 
-   void VisitInjectedClassNameType(const InjectedClassNameType *T); 
-   void VisitObjCInterfaceType(const ObjCInterfaceType *T); 
-   void VisitPackExpansionType(const PackExpansionType *T); 
-   
-   void VisitLabelDecl(const LabelDecl *D); 
-   void VisitTypedefDecl(const TypedefDecl *D); 
-   void VisitEnumDecl(const EnumDecl *D); 
-   void VisitRecordDecl(const RecordDecl *D); 
-   void VisitEnumConstantDecl(const EnumConstantDecl *D); 
-   void VisitIndirectFieldDecl(const IndirectFieldDecl *D); 
-   void VisitFunctionDecl(const FunctionDecl *D); 
-   void VisitFieldDecl(const FieldDecl *D); 
-   void VisitVarDecl(const VarDecl *D); 
-   void VisitBindingDecl(const BindingDecl *D); 
-   void VisitCapturedDecl(const CapturedDecl *D); 
-   void VisitImportDecl(const ImportDecl *D); 
-   void VisitPragmaCommentDecl(const PragmaCommentDecl *D); 
-   void VisitPragmaDetectMismatchDecl(const PragmaDetectMismatchDecl *D); 
-   void VisitOMPExecutableDirective(const OMPExecutableDirective *D); 
-   void VisitOMPDeclareReductionDecl(const OMPDeclareReductionDecl *D); 
-   void VisitOMPRequiresDecl(const OMPRequiresDecl *D); 
-   void VisitOMPCapturedExprDecl(const OMPCapturedExprDecl *D); 
-   void VisitNamespaceDecl(const NamespaceDecl *D); 
-   void VisitUsingDirectiveDecl(const UsingDirectiveDecl *D); 
-   void VisitNamespaceAliasDecl(const NamespaceAliasDecl *D); 
-   void VisitTypeAliasDecl(const TypeAliasDecl *D); 
-   void VisitTypeAliasTemplateDecl(const TypeAliasTemplateDecl *D); 
-   void VisitCXXRecordDecl(const CXXRecordDecl *D); 
-   void VisitFunctionTemplateDecl(const FunctionTemplateDecl *D); 
-   void VisitClassTemplateDecl(const ClassTemplateDecl *D); 
-   void VisitBuiltinTemplateDecl(const BuiltinTemplateDecl *D); 
-   void VisitVarTemplateDecl(const VarTemplateDecl *D); 
-   void VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D); 
-   void VisitNonTypeTemplateParmDecl(const NonTypeTemplateParmDecl *D); 
-   void VisitTemplateTemplateParmDecl(const TemplateTemplateParmDecl *D); 
-   void VisitUsingDecl(const UsingDecl *D); 
-   void VisitUnresolvedUsingTypenameDecl(const UnresolvedUsingTypenameDecl *D); 
-   void VisitUnresolvedUsingValueDecl(const UnresolvedUsingValueDecl *D); 
-   void VisitUsingEnumDecl(const UsingEnumDecl *D); 
-   void VisitUsingShadowDecl(const UsingShadowDecl *D); 
-   void VisitConstructorUsingShadowDecl(const ConstructorUsingShadowDecl *D); 
-   void VisitLinkageSpecDecl(const LinkageSpecDecl *D); 
-   void VisitAccessSpecDecl(const AccessSpecDecl *D); 
-   void VisitFriendDecl(const FriendDecl *D); 
-   void VisitObjCIvarDecl(const ObjCIvarDecl *D); 
-   void VisitObjCMethodDecl(const ObjCMethodDecl *D); 
-   void VisitObjCTypeParamDecl(const ObjCTypeParamDecl *D); 
-   void VisitObjCCategoryDecl(const ObjCCategoryDecl *D); 
-   void VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D); 
-   void VisitObjCProtocolDecl(const ObjCProtocolDecl *D); 
-   void VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D); 
-   void VisitObjCImplementationDecl(const ObjCImplementationDecl *D); 
-   void VisitObjCCompatibleAliasDecl(const ObjCCompatibleAliasDecl *D); 
-   void VisitObjCPropertyDecl(const ObjCPropertyDecl *D); 
-   void VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D); 
-   void VisitBlockDecl(const BlockDecl *D); 
-   void VisitConceptDecl(const ConceptDecl *D); 
-   void 
-   VisitLifetimeExtendedTemporaryDecl(const LifetimeExtendedTemporaryDecl *D); 
-   void VisitHLSLBufferDecl(const HLSLBufferDecl *D); 
- }; 
-   
- } // namespace clang 
-   
- #endif // LLVM_CLANG_AST_TEXTNODEDUMPER_H 
-