1 //===--- ASTDumper.cpp - Dumping implementation for ASTs ------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the AST dump methods, which dump out the
11 // AST in a form that exposes type details and other fields.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/Attr.h"
17 #include "clang/AST/CommentVisitor.h"
18 #include "clang/AST/DeclCXX.h"
19 #include "clang/AST/DeclLookups.h"
20 #include "clang/AST/DeclObjC.h"
21 #include "clang/AST/DeclVisitor.h"
22 #include "clang/AST/StmtVisitor.h"
23 #include "clang/AST/TypeVisitor.h"
24 #include "clang/Basic/Module.h"
25 #include "clang/Basic/SourceManager.h"
26 #include "llvm/Support/raw_ostream.h"
27 using namespace clang;
28 using namespace clang::comments;
29 
30 //===----------------------------------------------------------------------===//
31 // ASTDumper Visitor
32 //===----------------------------------------------------------------------===//
33 
34 namespace  {
35   // Colors used for various parts of the AST dump
36   // Do not use bold yellow for any text.  It is hard to read on white screens.
37 
38   struct TerminalColor {
39     raw_ostream::Colors Color;
40     bool Bold;
41   };
42 
43   // Red           - CastColor
44   // Green         - TypeColor
45   // Bold Green    - DeclKindNameColor, UndeserializedColor
46   // Yellow        - AddressColor, LocationColor
47   // Blue          - CommentColor, NullColor, IndentColor
48   // Bold Blue     - AttrColor
49   // Bold Magenta  - StmtColor
50   // Cyan          - ValueKindColor, ObjectKindColor
51   // Bold Cyan     - ValueColor, DeclNameColor
52 
53   // Decl kind names (VarDecl, FunctionDecl, etc)
54   static const TerminalColor DeclKindNameColor = { raw_ostream::GREEN, true };
55   // Attr names (CleanupAttr, GuardedByAttr, etc)
56   static const TerminalColor AttrColor = { raw_ostream::BLUE, true };
57   // Statement names (DeclStmt, ImplicitCastExpr, etc)
58   static const TerminalColor StmtColor = { raw_ostream::MAGENTA, true };
59   // Comment names (FullComment, ParagraphComment, TextComment, etc)
60   static const TerminalColor CommentColor = { raw_ostream::BLUE, false };
61 
62   // Type names (int, float, etc, plus user defined types)
63   static const TerminalColor TypeColor = { raw_ostream::GREEN, false };
64 
65   // Pointer address
66   static const TerminalColor AddressColor = { raw_ostream::YELLOW, false };
67   // Source locations
68   static const TerminalColor LocationColor = { raw_ostream::YELLOW, false };
69 
70   // lvalue/xvalue
71   static const TerminalColor ValueKindColor = { raw_ostream::CYAN, false };
72   // bitfield/objcproperty/objcsubscript/vectorcomponent
73   static const TerminalColor ObjectKindColor = { raw_ostream::CYAN, false };
74 
75   // Null statements
76   static const TerminalColor NullColor = { raw_ostream::BLUE, false };
77 
78   // Undeserialized entities
79   static const TerminalColor UndeserializedColor = { raw_ostream::GREEN, true };
80 
81   // CastKind from CastExpr's
82   static const TerminalColor CastColor = { raw_ostream::RED, false };
83 
84   // Value of the statement
85   static const TerminalColor ValueColor = { raw_ostream::CYAN, true };
86   // Decl names
87   static const TerminalColor DeclNameColor = { raw_ostream::CYAN, true };
88 
89   // Indents ( `, -. | )
90   static const TerminalColor IndentColor = { raw_ostream::BLUE, false };
91 
92   class ASTDumper
93       : public ConstDeclVisitor<ASTDumper>, public ConstStmtVisitor<ASTDumper>,
94         public ConstCommentVisitor<ASTDumper>, public TypeVisitor<ASTDumper> {
95     raw_ostream &OS;
96     const CommandTraits *Traits;
97     const SourceManager *SM;
98 
99     /// Pending[i] is an action to dump an entity at level i.
100     llvm::SmallVector<std::function<void(bool isLastChild)>, 32> Pending;
101 
102     /// Indicates whether we're at the top level.
103     bool TopLevel;
104 
105     /// Indicates if we're handling the first child after entering a new depth.
106     bool FirstChild;
107 
108     /// Prefix for currently-being-dumped entity.
109     std::string Prefix;
110 
111     /// Keep track of the last location we print out so that we can
112     /// print out deltas from then on out.
113     const char *LastLocFilename;
114     unsigned LastLocLine;
115 
116     /// The \c FullComment parent of the comment being dumped.
117     const FullComment *FC;
118 
119     bool ShowColors;
120 
121     /// Dump a child of the current node.
122     template<typename Fn> void dumpChild(Fn doDumpChild) {
123       // If we're at the top level, there's nothing interesting to do; just
124       // run the dumper.
125       if (TopLevel) {
126         TopLevel = false;
127         doDumpChild();
128         while (!Pending.empty()) {
129           Pending.back()(true);
130           Pending.pop_back();
131         }
132         Prefix.clear();
133         OS << "\n";
134         TopLevel = true;
135         return;
136       }
137 
138       const FullComment *OrigFC = FC;
139       auto dumpWithIndent = [this, doDumpChild, OrigFC](bool isLastChild) {
140         // Print out the appropriate tree structure and work out the prefix for
141         // children of this node. For instance:
142         //
143         //   A        Prefix = ""
144         //   |-B      Prefix = "| "
145         //   | `-C    Prefix = "|   "
146         //   `-D      Prefix = "  "
147         //     |-E    Prefix = "  | "
148         //     `-F    Prefix = "    "
149         //   G        Prefix = ""
150         //
151         // Note that the first level gets no prefix.
152         {
153           OS << '\n';
154           ColorScope Color(*this, IndentColor);
155           OS << Prefix << (isLastChild ? '`' : '|') << '-';
156           this->Prefix.push_back(isLastChild ? ' ' : '|');
157           this->Prefix.push_back(' ');
158         }
159 
160         FirstChild = true;
161         unsigned Depth = Pending.size();
162 
163         FC = OrigFC;
164         doDumpChild();
165 
166         // If any children are left, they're the last at their nesting level.
167         // Dump those ones out now.
168         while (Depth < Pending.size()) {
169           Pending.back()(true);
170           this->Pending.pop_back();
171         }
172 
173         // Restore the old prefix.
174         this->Prefix.resize(Prefix.size() - 2);
175       };
176 
177       if (FirstChild) {
178         Pending.push_back(std::move(dumpWithIndent));
179       } else {
180         Pending.back()(false);
181         Pending.back() = std::move(dumpWithIndent);
182       }
183       FirstChild = false;
184     }
185 
186     class ColorScope {
187       ASTDumper &Dumper;
188     public:
189       ColorScope(ASTDumper &Dumper, TerminalColor Color)
190         : Dumper(Dumper) {
191         if (Dumper.ShowColors)
192           Dumper.OS.changeColor(Color.Color, Color.Bold);
193       }
194       ~ColorScope() {
195         if (Dumper.ShowColors)
196           Dumper.OS.resetColor();
197       }
198     };
199 
200   public:
201     ASTDumper(raw_ostream &OS, const CommandTraits *Traits,
202               const SourceManager *SM)
203       : OS(OS), Traits(Traits), SM(SM), TopLevel(true), FirstChild(true),
204         LastLocFilename(""), LastLocLine(~0U), FC(nullptr),
205         ShowColors(SM && SM->getDiagnostics().getShowColors()) { }
206 
207     ASTDumper(raw_ostream &OS, const CommandTraits *Traits,
208               const SourceManager *SM, bool ShowColors)
209       : OS(OS), Traits(Traits), SM(SM), TopLevel(true), FirstChild(true),
210         LastLocFilename(""), LastLocLine(~0U),
211         ShowColors(ShowColors) { }
212 
213     void dumpDecl(const Decl *D);
214     void dumpStmt(const Stmt *S);
215     void dumpFullComment(const FullComment *C);
216 
217     // Utilities
218     void dumpPointer(const void *Ptr);
219     void dumpSourceRange(SourceRange R);
220     void dumpLocation(SourceLocation Loc);
221     void dumpBareType(QualType T, bool Desugar = true);
222     void dumpType(QualType T);
223     void dumpTypeAsChild(QualType T);
224     void dumpTypeAsChild(const Type *T);
225     void dumpBareDeclRef(const Decl *Node);
226     void dumpDeclRef(const Decl *Node, const char *Label = nullptr);
227     void dumpName(const NamedDecl *D);
228     bool hasNodes(const DeclContext *DC);
229     void dumpDeclContext(const DeclContext *DC);
230     void dumpLookups(const DeclContext *DC, bool DumpDecls);
231     void dumpAttr(const Attr *A);
232 
233     // C++ Utilities
234     void dumpAccessSpecifier(AccessSpecifier AS);
235     void dumpCXXCtorInitializer(const CXXCtorInitializer *Init);
236     void dumpTemplateParameters(const TemplateParameterList *TPL);
237     void dumpTemplateArgumentListInfo(const TemplateArgumentListInfo &TALI);
238     void dumpTemplateArgumentLoc(const TemplateArgumentLoc &A);
239     void dumpTemplateArgumentList(const TemplateArgumentList &TAL);
240     void dumpTemplateArgument(const TemplateArgument &A,
241                               SourceRange R = SourceRange());
242 
243     // Types
244     void VisitComplexType(const ComplexType *T) {
245       dumpTypeAsChild(T->getElementType());
246     }
247     void VisitPointerType(const PointerType *T) {
248       dumpTypeAsChild(T->getPointeeType());
249     }
250     void VisitBlockPointerType(const BlockPointerType *T) {
251       dumpTypeAsChild(T->getPointeeType());
252     }
253     void VisitReferenceType(const ReferenceType *T) {
254       dumpTypeAsChild(T->getPointeeType());
255     }
256     void VisitRValueReferenceType(const ReferenceType *T) {
257       if (T->isSpelledAsLValue())
258         OS << " written as lvalue reference";
259       VisitReferenceType(T);
260     }
261     void VisitMemberPointerType(const MemberPointerType *T) {
262       dumpTypeAsChild(T->getClass());
263       dumpTypeAsChild(T->getPointeeType());
264     }
265     void VisitArrayType(const ArrayType *T) {
266       switch (T->getSizeModifier()) {
267         case ArrayType::Normal: break;
268         case ArrayType::Static: OS << " static"; break;
269         case ArrayType::Star: OS << " *"; break;
270       }
271       OS << " " << T->getIndexTypeQualifiers().getAsString();
272       dumpTypeAsChild(T->getElementType());
273     }
274     void VisitConstantArrayType(const ConstantArrayType *T) {
275       OS << " " << T->getSize();
276       VisitArrayType(T);
277     }
278     void VisitVariableArrayType(const VariableArrayType *T) {
279       OS << " ";
280       dumpSourceRange(T->getBracketsRange());
281       VisitArrayType(T);
282       dumpStmt(T->getSizeExpr());
283     }
284     void VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
285       VisitArrayType(T);
286       OS << " ";
287       dumpSourceRange(T->getBracketsRange());
288       dumpStmt(T->getSizeExpr());
289     }
290     void VisitDependentSizedExtVectorType(
291         const DependentSizedExtVectorType *T) {
292       OS << " ";
293       dumpLocation(T->getAttributeLoc());
294       dumpTypeAsChild(T->getElementType());
295       dumpStmt(T->getSizeExpr());
296     }
297     void VisitVectorType(const VectorType *T) {
298       switch (T->getVectorKind()) {
299         case VectorType::GenericVector: break;
300         case VectorType::AltiVecVector: OS << " altivec"; break;
301         case VectorType::AltiVecPixel: OS << " altivec pixel"; break;
302         case VectorType::AltiVecBool: OS << " altivec bool"; break;
303         case VectorType::NeonVector: OS << " neon"; break;
304         case VectorType::NeonPolyVector: OS << " neon poly"; break;
305       }
306       OS << " " << T->getNumElements();
307       dumpTypeAsChild(T->getElementType());
308     }
309     void VisitFunctionType(const FunctionType *T) {
310       auto EI = T->getExtInfo();
311       if (EI.getNoReturn()) OS << " noreturn";
312       if (EI.getProducesResult()) OS << " produces_result";
313       if (EI.getHasRegParm()) OS << " regparm " << EI.getRegParm();
314       OS << " " << FunctionType::getNameForCallConv(EI.getCC());
315       dumpTypeAsChild(T->getReturnType());
316     }
317     void VisitFunctionProtoType(const FunctionProtoType *T) {
318       auto EPI = T->getExtProtoInfo();
319       if (EPI.HasTrailingReturn) OS << " trailing_return";
320       if (T->isConst()) OS << " const";
321       if (T->isVolatile()) OS << " volatile";
322       if (T->isRestrict()) OS << " restrict";
323       switch (EPI.RefQualifier) {
324         case RQ_None: break;
325         case RQ_LValue: OS << " &"; break;
326         case RQ_RValue: OS << " &&"; break;
327       }
328       // FIXME: Exception specification.
329       // FIXME: Consumed parameters.
330       VisitFunctionType(T);
331       for (QualType PT : T->getParamTypes())
332         dumpTypeAsChild(PT);
333       if (EPI.Variadic)
334         dumpChild([=] { OS << "..."; });
335     }
336     void VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
337       dumpDeclRef(T->getDecl());
338     }
339     void VisitTypedefType(const TypedefType *T) {
340       dumpDeclRef(T->getDecl());
341     }
342     void VisitTypeOfExprType(const TypeOfExprType *T) {
343       dumpStmt(T->getUnderlyingExpr());
344     }
345     void VisitDecltypeType(const DecltypeType *T) {
346       dumpStmt(T->getUnderlyingExpr());
347     }
348     void VisitUnaryTransformType(const UnaryTransformType *T) {
349       switch (T->getUTTKind()) {
350       case UnaryTransformType::EnumUnderlyingType:
351         OS << " underlying_type";
352         break;
353       }
354       dumpTypeAsChild(T->getBaseType());
355     }
356     void VisitTagType(const TagType *T) {
357       dumpDeclRef(T->getDecl());
358     }
359     void VisitAttributedType(const AttributedType *T) {
360       // FIXME: AttrKind
361       dumpTypeAsChild(T->getModifiedType());
362     }
363     void VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
364       OS << " depth " << T->getDepth() << " index " << T->getIndex();
365       if (T->isParameterPack()) OS << " pack";
366       dumpDeclRef(T->getDecl());
367     }
368     void VisitSubstTemplateTypeParmType(const SubstTemplateTypeParmType *T) {
369       dumpTypeAsChild(T->getReplacedParameter());
370     }
371     void VisitSubstTemplateTypeParmPackType(
372         const SubstTemplateTypeParmPackType *T) {
373       dumpTypeAsChild(T->getReplacedParameter());
374       dumpTemplateArgument(T->getArgumentPack());
375     }
376     void VisitAutoType(const AutoType *T) {
377       if (T->isDecltypeAuto()) OS << " decltype(auto)";
378       if (!T->isDeduced())
379         OS << " undeduced";
380     }
381     void VisitTemplateSpecializationType(const TemplateSpecializationType *T) {
382       if (T->isTypeAlias()) OS << " alias";
383       OS << " "; T->getTemplateName().dump(OS);
384       for (auto &Arg : *T)
385         dumpTemplateArgument(Arg);
386       if (T->isTypeAlias())
387         dumpTypeAsChild(T->getAliasedType());
388     }
389     void VisitInjectedClassNameType(const InjectedClassNameType *T) {
390       dumpDeclRef(T->getDecl());
391     }
392     void VisitObjCInterfaceType(const ObjCInterfaceType *T) {
393       dumpDeclRef(T->getDecl());
394     }
395     void VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
396       dumpTypeAsChild(T->getPointeeType());
397     }
398     void VisitAtomicType(const AtomicType *T) {
399       dumpTypeAsChild(T->getValueType());
400     }
401     void VisitAdjustedType(const AdjustedType *T) {
402       dumpTypeAsChild(T->getOriginalType());
403     }
404     void VisitPackExpansionType(const PackExpansionType *T) {
405       if (auto N = T->getNumExpansions()) OS << " expansions " << *N;
406       if (!T->isSugared())
407         dumpTypeAsChild(T->getPattern());
408     }
409     // FIXME: ElaboratedType, DependentNameType,
410     // DependentTemplateSpecializationType, ObjCObjectType
411 
412     // Decls
413     void VisitLabelDecl(const LabelDecl *D);
414     void VisitTypedefDecl(const TypedefDecl *D);
415     void VisitEnumDecl(const EnumDecl *D);
416     void VisitRecordDecl(const RecordDecl *D);
417     void VisitEnumConstantDecl(const EnumConstantDecl *D);
418     void VisitIndirectFieldDecl(const IndirectFieldDecl *D);
419     void VisitFunctionDecl(const FunctionDecl *D);
420     void VisitFieldDecl(const FieldDecl *D);
421     void VisitVarDecl(const VarDecl *D);
422     void VisitFileScopeAsmDecl(const FileScopeAsmDecl *D);
423     void VisitImportDecl(const ImportDecl *D);
424 
425     // C++ Decls
426     void VisitNamespaceDecl(const NamespaceDecl *D);
427     void VisitUsingDirectiveDecl(const UsingDirectiveDecl *D);
428     void VisitNamespaceAliasDecl(const NamespaceAliasDecl *D);
429     void VisitTypeAliasDecl(const TypeAliasDecl *D);
430     void VisitTypeAliasTemplateDecl(const TypeAliasTemplateDecl *D);
431     void VisitCXXRecordDecl(const CXXRecordDecl *D);
432     void VisitStaticAssertDecl(const StaticAssertDecl *D);
433     template<typename SpecializationDecl>
434     void VisitTemplateDeclSpecialization(const SpecializationDecl *D,
435                                          bool DumpExplicitInst,
436                                          bool DumpRefOnly);
437     template<typename TemplateDecl>
438     void VisitTemplateDecl(const TemplateDecl *D, bool DumpExplicitInst);
439     void VisitFunctionTemplateDecl(const FunctionTemplateDecl *D);
440     void VisitClassTemplateDecl(const ClassTemplateDecl *D);
441     void VisitClassTemplateSpecializationDecl(
442         const ClassTemplateSpecializationDecl *D);
443     void VisitClassTemplatePartialSpecializationDecl(
444         const ClassTemplatePartialSpecializationDecl *D);
445     void VisitClassScopeFunctionSpecializationDecl(
446         const ClassScopeFunctionSpecializationDecl *D);
447     void VisitVarTemplateDecl(const VarTemplateDecl *D);
448     void VisitVarTemplateSpecializationDecl(
449         const VarTemplateSpecializationDecl *D);
450     void VisitVarTemplatePartialSpecializationDecl(
451         const VarTemplatePartialSpecializationDecl *D);
452     void VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D);
453     void VisitNonTypeTemplateParmDecl(const NonTypeTemplateParmDecl *D);
454     void VisitTemplateTemplateParmDecl(const TemplateTemplateParmDecl *D);
455     void VisitUsingDecl(const UsingDecl *D);
456     void VisitUnresolvedUsingTypenameDecl(const UnresolvedUsingTypenameDecl *D);
457     void VisitUnresolvedUsingValueDecl(const UnresolvedUsingValueDecl *D);
458     void VisitUsingShadowDecl(const UsingShadowDecl *D);
459     void VisitLinkageSpecDecl(const LinkageSpecDecl *D);
460     void VisitAccessSpecDecl(const AccessSpecDecl *D);
461     void VisitFriendDecl(const FriendDecl *D);
462 
463     // ObjC Decls
464     void VisitObjCIvarDecl(const ObjCIvarDecl *D);
465     void VisitObjCMethodDecl(const ObjCMethodDecl *D);
466     void VisitObjCCategoryDecl(const ObjCCategoryDecl *D);
467     void VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D);
468     void VisitObjCProtocolDecl(const ObjCProtocolDecl *D);
469     void VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D);
470     void VisitObjCImplementationDecl(const ObjCImplementationDecl *D);
471     void VisitObjCCompatibleAliasDecl(const ObjCCompatibleAliasDecl *D);
472     void VisitObjCPropertyDecl(const ObjCPropertyDecl *D);
473     void VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D);
474     void VisitBlockDecl(const BlockDecl *D);
475 
476     // Stmts.
477     void VisitStmt(const Stmt *Node);
478     void VisitDeclStmt(const DeclStmt *Node);
479     void VisitAttributedStmt(const AttributedStmt *Node);
480     void VisitLabelStmt(const LabelStmt *Node);
481     void VisitGotoStmt(const GotoStmt *Node);
482     void VisitCXXCatchStmt(const CXXCatchStmt *Node);
483 
484     // Exprs
485     void VisitExpr(const Expr *Node);
486     void VisitCastExpr(const CastExpr *Node);
487     void VisitDeclRefExpr(const DeclRefExpr *Node);
488     void VisitPredefinedExpr(const PredefinedExpr *Node);
489     void VisitCharacterLiteral(const CharacterLiteral *Node);
490     void VisitIntegerLiteral(const IntegerLiteral *Node);
491     void VisitFloatingLiteral(const FloatingLiteral *Node);
492     void VisitStringLiteral(const StringLiteral *Str);
493     void VisitInitListExpr(const InitListExpr *ILE);
494     void VisitUnaryOperator(const UnaryOperator *Node);
495     void VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *Node);
496     void VisitMemberExpr(const MemberExpr *Node);
497     void VisitExtVectorElementExpr(const ExtVectorElementExpr *Node);
498     void VisitBinaryOperator(const BinaryOperator *Node);
499     void VisitCompoundAssignOperator(const CompoundAssignOperator *Node);
500     void VisitAddrLabelExpr(const AddrLabelExpr *Node);
501     void VisitBlockExpr(const BlockExpr *Node);
502     void VisitOpaqueValueExpr(const OpaqueValueExpr *Node);
503 
504     // C++
505     void VisitCXXNamedCastExpr(const CXXNamedCastExpr *Node);
506     void VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *Node);
507     void VisitCXXThisExpr(const CXXThisExpr *Node);
508     void VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *Node);
509     void VisitCXXConstructExpr(const CXXConstructExpr *Node);
510     void VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *Node);
511     void VisitCXXNewExpr(const CXXNewExpr *Node);
512     void VisitCXXDeleteExpr(const CXXDeleteExpr *Node);
513     void VisitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *Node);
514     void VisitExprWithCleanups(const ExprWithCleanups *Node);
515     void VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *Node);
516     void dumpCXXTemporary(const CXXTemporary *Temporary);
517     void VisitLambdaExpr(const LambdaExpr *Node) {
518       VisitExpr(Node);
519       dumpDecl(Node->getLambdaClass());
520     }
521     void VisitSizeOfPackExpr(const SizeOfPackExpr *Node);
522 
523     // ObjC
524     void VisitObjCAtCatchStmt(const ObjCAtCatchStmt *Node);
525     void VisitObjCEncodeExpr(const ObjCEncodeExpr *Node);
526     void VisitObjCMessageExpr(const ObjCMessageExpr *Node);
527     void VisitObjCBoxedExpr(const ObjCBoxedExpr *Node);
528     void VisitObjCSelectorExpr(const ObjCSelectorExpr *Node);
529     void VisitObjCProtocolExpr(const ObjCProtocolExpr *Node);
530     void VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *Node);
531     void VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *Node);
532     void VisitObjCIvarRefExpr(const ObjCIvarRefExpr *Node);
533     void VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *Node);
534 
535     // Comments.
536     const char *getCommandName(unsigned CommandID);
537     void dumpComment(const Comment *C);
538 
539     // Inline comments.
540     void visitTextComment(const TextComment *C);
541     void visitInlineCommandComment(const InlineCommandComment *C);
542     void visitHTMLStartTagComment(const HTMLStartTagComment *C);
543     void visitHTMLEndTagComment(const HTMLEndTagComment *C);
544 
545     // Block comments.
546     void visitBlockCommandComment(const BlockCommandComment *C);
547     void visitParamCommandComment(const ParamCommandComment *C);
548     void visitTParamCommandComment(const TParamCommandComment *C);
549     void visitVerbatimBlockComment(const VerbatimBlockComment *C);
550     void visitVerbatimBlockLineComment(const VerbatimBlockLineComment *C);
551     void visitVerbatimLineComment(const VerbatimLineComment *C);
552   };
553 }
554 
555 //===----------------------------------------------------------------------===//
556 //  Utilities
557 //===----------------------------------------------------------------------===//
558 
559 void ASTDumper::dumpPointer(const void *Ptr) {
560   ColorScope Color(*this, AddressColor);
561   OS << ' ' << Ptr;
562 }
563 
564 void ASTDumper::dumpLocation(SourceLocation Loc) {
565   if (!SM)
566     return;
567 
568   ColorScope Color(*this, LocationColor);
569   SourceLocation SpellingLoc = SM->getSpellingLoc(Loc);
570 
571   // The general format we print out is filename:line:col, but we drop pieces
572   // that haven't changed since the last loc printed.
573   PresumedLoc PLoc = SM->getPresumedLoc(SpellingLoc);
574 
575   if (PLoc.isInvalid()) {
576     OS << "<invalid sloc>";
577     return;
578   }
579 
580   if (strcmp(PLoc.getFilename(), LastLocFilename) != 0) {
581     OS << PLoc.getFilename() << ':' << PLoc.getLine()
582        << ':' << PLoc.getColumn();
583     LastLocFilename = PLoc.getFilename();
584     LastLocLine = PLoc.getLine();
585   } else if (PLoc.getLine() != LastLocLine) {
586     OS << "line" << ':' << PLoc.getLine()
587        << ':' << PLoc.getColumn();
588     LastLocLine = PLoc.getLine();
589   } else {
590     OS << "col" << ':' << PLoc.getColumn();
591   }
592 }
593 
594 void ASTDumper::dumpSourceRange(SourceRange R) {
595   // Can't translate locations if a SourceManager isn't available.
596   if (!SM)
597     return;
598 
599   OS << " <";
600   dumpLocation(R.getBegin());
601   if (R.getBegin() != R.getEnd()) {
602     OS << ", ";
603     dumpLocation(R.getEnd());
604   }
605   OS << ">";
606 
607   // <t2.c:123:421[blah], t2.c:412:321>
608 
609 }
610 
611 void ASTDumper::dumpBareType(QualType T, bool Desugar) {
612   ColorScope Color(*this, TypeColor);
613 
614   SplitQualType T_split = T.split();
615   OS << "'" << QualType::getAsString(T_split) << "'";
616 
617   if (Desugar && !T.isNull()) {
618     // If the type is sugared, also dump a (shallow) desugared type.
619     SplitQualType D_split = T.getSplitDesugaredType();
620     if (T_split != D_split)
621       OS << ":'" << QualType::getAsString(D_split) << "'";
622   }
623 }
624 
625 void ASTDumper::dumpType(QualType T) {
626   OS << ' ';
627   dumpBareType(T);
628 }
629 
630 void ASTDumper::dumpTypeAsChild(QualType T) {
631   SplitQualType SQT = T.split();
632   if (!SQT.Quals.hasQualifiers())
633     return dumpTypeAsChild(SQT.Ty);
634 
635   dumpChild([=] {
636     OS << "QualType";
637     dumpPointer(T.getAsOpaquePtr());
638     OS << " ";
639     dumpBareType(T, false);
640     OS << " " << T.split().Quals.getAsString();
641     dumpTypeAsChild(T.split().Ty);
642   });
643 }
644 
645 void ASTDumper::dumpTypeAsChild(const Type *T) {
646   dumpChild([=] {
647     if (!T) {
648       ColorScope Color(*this, NullColor);
649       OS << "<<<NULL>>>";
650       return;
651     }
652 
653     {
654       ColorScope Color(*this, TypeColor);
655       OS << T->getTypeClassName() << "Type";
656     }
657     dumpPointer(T);
658     OS << " ";
659     dumpBareType(QualType(T, 0), false);
660 
661     QualType SingleStepDesugar =
662         T->getLocallyUnqualifiedSingleStepDesugaredType();
663     if (SingleStepDesugar != QualType(T, 0))
664       OS << " sugar";
665     if (T->isDependentType())
666       OS << " dependent";
667     else if (T->isInstantiationDependentType())
668       OS << " instantiation_dependent";
669     if (T->isVariablyModifiedType())
670       OS << " variably_modified";
671     if (T->containsUnexpandedParameterPack())
672       OS << " contains_unexpanded_pack";
673     if (T->isFromAST())
674       OS << " imported";
675 
676     TypeVisitor<ASTDumper>::Visit(T);
677 
678     if (SingleStepDesugar != QualType(T, 0))
679       dumpTypeAsChild(SingleStepDesugar);
680   });
681 }
682 
683 void ASTDumper::dumpBareDeclRef(const Decl *D) {
684   {
685     ColorScope Color(*this, DeclKindNameColor);
686     OS << D->getDeclKindName();
687   }
688   dumpPointer(D);
689 
690   if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
691     ColorScope Color(*this, DeclNameColor);
692     OS << " '" << ND->getDeclName() << '\'';
693   }
694 
695   if (const ValueDecl *VD = dyn_cast<ValueDecl>(D))
696     dumpType(VD->getType());
697 }
698 
699 void ASTDumper::dumpDeclRef(const Decl *D, const char *Label) {
700   if (!D)
701     return;
702 
703   dumpChild([=]{
704     if (Label)
705       OS << Label << ' ';
706     dumpBareDeclRef(D);
707   });
708 }
709 
710 void ASTDumper::dumpName(const NamedDecl *ND) {
711   if (ND->getDeclName()) {
712     ColorScope Color(*this, DeclNameColor);
713     OS << ' ' << ND->getNameAsString();
714   }
715 }
716 
717 bool ASTDumper::hasNodes(const DeclContext *DC) {
718   if (!DC)
719     return false;
720 
721   return DC->hasExternalLexicalStorage() ||
722          DC->noload_decls_begin() != DC->noload_decls_end();
723 }
724 
725 void ASTDumper::dumpDeclContext(const DeclContext *DC) {
726   if (!DC)
727     return;
728 
729   for (auto *D : DC->noload_decls())
730     dumpDecl(D);
731 
732   if (DC->hasExternalLexicalStorage()) {
733     dumpChild([=]{
734       ColorScope Color(*this, UndeserializedColor);
735       OS << "<undeserialized declarations>";
736     });
737   }
738 }
739 
740 void ASTDumper::dumpLookups(const DeclContext *DC, bool DumpDecls) {
741   dumpChild([=] {
742     OS << "StoredDeclsMap ";
743     dumpBareDeclRef(cast<Decl>(DC));
744 
745     const DeclContext *Primary = DC->getPrimaryContext();
746     if (Primary != DC) {
747       OS << " primary";
748       dumpPointer(cast<Decl>(Primary));
749     }
750 
751     bool HasUndeserializedLookups = Primary->hasExternalVisibleStorage();
752 
753     DeclContext::all_lookups_iterator I = Primary->noload_lookups_begin(),
754                                       E = Primary->noload_lookups_end();
755     while (I != E) {
756       DeclarationName Name = I.getLookupName();
757       DeclContextLookupResult R = *I++;
758 
759       dumpChild([=] {
760         OS << "DeclarationName ";
761         {
762           ColorScope Color(*this, DeclNameColor);
763           OS << '\'' << Name << '\'';
764         }
765 
766         for (DeclContextLookupResult::iterator RI = R.begin(), RE = R.end();
767              RI != RE; ++RI) {
768           dumpChild([=] {
769             dumpBareDeclRef(*RI);
770 
771             if ((*RI)->isHidden())
772               OS << " hidden";
773 
774             // If requested, dump the redecl chain for this lookup.
775             if (DumpDecls) {
776               // Dump earliest decl first.
777               std::function<void(Decl *)> DumpWithPrev = [&](Decl *D) {
778                 if (Decl *Prev = D->getPreviousDecl())
779                   DumpWithPrev(Prev);
780                 dumpDecl(D);
781               };
782               DumpWithPrev(*RI);
783             }
784           });
785         }
786       });
787     }
788 
789     if (HasUndeserializedLookups) {
790       dumpChild([=] {
791         ColorScope Color(*this, UndeserializedColor);
792         OS << "<undeserialized lookups>";
793       });
794     }
795   });
796 }
797 
798 void ASTDumper::dumpAttr(const Attr *A) {
799   dumpChild([=] {
800     {
801       ColorScope Color(*this, AttrColor);
802 
803       switch (A->getKind()) {
804 #define ATTR(X) case attr::X: OS << #X; break;
805 #include "clang/Basic/AttrList.inc"
806       default:
807         llvm_unreachable("unexpected attribute kind");
808       }
809       OS << "Attr";
810     }
811     dumpPointer(A);
812     dumpSourceRange(A->getRange());
813     if (A->isInherited())
814       OS << " Inherited";
815     if (A->isImplicit())
816       OS << " Implicit";
817 #include "clang/AST/AttrDump.inc"
818   });
819 }
820 
821 static void dumpPreviousDeclImpl(raw_ostream &OS, ...) {}
822 
823 template<typename T>
824 static void dumpPreviousDeclImpl(raw_ostream &OS, const Mergeable<T> *D) {
825   const T *First = D->getFirstDecl();
826   if (First != D)
827     OS << " first " << First;
828 }
829 
830 template<typename T>
831 static void dumpPreviousDeclImpl(raw_ostream &OS, const Redeclarable<T> *D) {
832   const T *Prev = D->getPreviousDecl();
833   if (Prev)
834     OS << " prev " << Prev;
835 }
836 
837 /// Dump the previous declaration in the redeclaration chain for a declaration,
838 /// if any.
839 static void dumpPreviousDecl(raw_ostream &OS, const Decl *D) {
840   switch (D->getKind()) {
841 #define DECL(DERIVED, BASE) \
842   case Decl::DERIVED: \
843     return dumpPreviousDeclImpl(OS, cast<DERIVED##Decl>(D));
844 #define ABSTRACT_DECL(DECL)
845 #include "clang/AST/DeclNodes.inc"
846   }
847   llvm_unreachable("Decl that isn't part of DeclNodes.inc!");
848 }
849 
850 //===----------------------------------------------------------------------===//
851 //  C++ Utilities
852 //===----------------------------------------------------------------------===//
853 
854 void ASTDumper::dumpAccessSpecifier(AccessSpecifier AS) {
855   switch (AS) {
856   case AS_none:
857     break;
858   case AS_public:
859     OS << "public";
860     break;
861   case AS_protected:
862     OS << "protected";
863     break;
864   case AS_private:
865     OS << "private";
866     break;
867   }
868 }
869 
870 void ASTDumper::dumpCXXCtorInitializer(const CXXCtorInitializer *Init) {
871   dumpChild([=] {
872     OS << "CXXCtorInitializer";
873     if (Init->isAnyMemberInitializer()) {
874       OS << ' ';
875       dumpBareDeclRef(Init->getAnyMember());
876     } else if (Init->isBaseInitializer()) {
877       dumpType(QualType(Init->getBaseClass(), 0));
878     } else if (Init->isDelegatingInitializer()) {
879       dumpType(Init->getTypeSourceInfo()->getType());
880     } else {
881       llvm_unreachable("Unknown initializer type");
882     }
883     dumpStmt(Init->getInit());
884   });
885 }
886 
887 void ASTDumper::dumpTemplateParameters(const TemplateParameterList *TPL) {
888   if (!TPL)
889     return;
890 
891   for (TemplateParameterList::const_iterator I = TPL->begin(), E = TPL->end();
892        I != E; ++I)
893     dumpDecl(*I);
894 }
895 
896 void ASTDumper::dumpTemplateArgumentListInfo(
897     const TemplateArgumentListInfo &TALI) {
898   for (unsigned i = 0, e = TALI.size(); i < e; ++i)
899     dumpTemplateArgumentLoc(TALI[i]);
900 }
901 
902 void ASTDumper::dumpTemplateArgumentLoc(const TemplateArgumentLoc &A) {
903   dumpTemplateArgument(A.getArgument(), A.getSourceRange());
904 }
905 
906 void ASTDumper::dumpTemplateArgumentList(const TemplateArgumentList &TAL) {
907   for (unsigned i = 0, e = TAL.size(); i < e; ++i)
908     dumpTemplateArgument(TAL[i]);
909 }
910 
911 void ASTDumper::dumpTemplateArgument(const TemplateArgument &A, SourceRange R) {
912   dumpChild([=] {
913     OS << "TemplateArgument";
914     if (R.isValid())
915       dumpSourceRange(R);
916 
917     switch (A.getKind()) {
918     case TemplateArgument::Null:
919       OS << " null";
920       break;
921     case TemplateArgument::Type:
922       OS << " type";
923       dumpType(A.getAsType());
924       break;
925     case TemplateArgument::Declaration:
926       OS << " decl";
927       dumpDeclRef(A.getAsDecl());
928       break;
929     case TemplateArgument::NullPtr:
930       OS << " nullptr";
931       break;
932     case TemplateArgument::Integral:
933       OS << " integral " << A.getAsIntegral();
934       break;
935     case TemplateArgument::Template:
936       OS << " template ";
937       A.getAsTemplate().dump(OS);
938       break;
939     case TemplateArgument::TemplateExpansion:
940       OS << " template expansion";
941       A.getAsTemplateOrTemplatePattern().dump(OS);
942       break;
943     case TemplateArgument::Expression:
944       OS << " expr";
945       dumpStmt(A.getAsExpr());
946       break;
947     case TemplateArgument::Pack:
948       OS << " pack";
949       for (TemplateArgument::pack_iterator I = A.pack_begin(), E = A.pack_end();
950            I != E; ++I)
951         dumpTemplateArgument(*I);
952       break;
953     }
954   });
955 }
956 
957 //===----------------------------------------------------------------------===//
958 //  Decl dumping methods.
959 //===----------------------------------------------------------------------===//
960 
961 void ASTDumper::dumpDecl(const Decl *D) {
962   dumpChild([=] {
963     if (!D) {
964       ColorScope Color(*this, NullColor);
965       OS << "<<<NULL>>>";
966       return;
967     }
968 
969     {
970       ColorScope Color(*this, DeclKindNameColor);
971       OS << D->getDeclKindName() << "Decl";
972     }
973     dumpPointer(D);
974     if (D->getLexicalDeclContext() != D->getDeclContext())
975       OS << " parent " << cast<Decl>(D->getDeclContext());
976     dumpPreviousDecl(OS, D);
977     dumpSourceRange(D->getSourceRange());
978     OS << ' ';
979     dumpLocation(D->getLocation());
980     if (Module *M = D->getImportedOwningModule())
981       OS << " in " << M->getFullModuleName();
982     else if (Module *M = D->getLocalOwningModule())
983       OS << " in (local) " << M->getFullModuleName();
984     if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
985       if (ND->isHidden())
986         OS << " hidden";
987     if (D->isImplicit())
988       OS << " implicit";
989     if (D->isUsed())
990       OS << " used";
991     else if (D->isThisDeclarationReferenced())
992       OS << " referenced";
993     if (D->isInvalidDecl())
994       OS << " invalid";
995     if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
996       if (FD->isConstexpr())
997         OS << " constexpr";
998 
999 
1000     ConstDeclVisitor<ASTDumper>::Visit(D);
1001 
1002     for (Decl::attr_iterator I = D->attr_begin(), E = D->attr_end(); I != E;
1003          ++I)
1004       dumpAttr(*I);
1005 
1006     if (const FullComment *Comment =
1007             D->getASTContext().getLocalCommentForDeclUncached(D))
1008       dumpFullComment(Comment);
1009 
1010     // Decls within functions are visited by the body.
1011     if (!isa<FunctionDecl>(*D) && !isa<ObjCMethodDecl>(*D) &&
1012         hasNodes(dyn_cast<DeclContext>(D)))
1013       dumpDeclContext(cast<DeclContext>(D));
1014   });
1015 }
1016 
1017 void ASTDumper::VisitLabelDecl(const LabelDecl *D) {
1018   dumpName(D);
1019 }
1020 
1021 void ASTDumper::VisitTypedefDecl(const TypedefDecl *D) {
1022   dumpName(D);
1023   dumpType(D->getUnderlyingType());
1024   if (D->isModulePrivate())
1025     OS << " __module_private__";
1026 }
1027 
1028 void ASTDumper::VisitEnumDecl(const EnumDecl *D) {
1029   if (D->isScoped()) {
1030     if (D->isScopedUsingClassTag())
1031       OS << " class";
1032     else
1033       OS << " struct";
1034   }
1035   dumpName(D);
1036   if (D->isModulePrivate())
1037     OS << " __module_private__";
1038   if (D->isFixed())
1039     dumpType(D->getIntegerType());
1040 }
1041 
1042 void ASTDumper::VisitRecordDecl(const RecordDecl *D) {
1043   OS << ' ' << D->getKindName();
1044   dumpName(D);
1045   if (D->isModulePrivate())
1046     OS << " __module_private__";
1047   if (D->isCompleteDefinition())
1048     OS << " definition";
1049 }
1050 
1051 void ASTDumper::VisitEnumConstantDecl(const EnumConstantDecl *D) {
1052   dumpName(D);
1053   dumpType(D->getType());
1054   if (const Expr *Init = D->getInitExpr())
1055     dumpStmt(Init);
1056 }
1057 
1058 void ASTDumper::VisitIndirectFieldDecl(const IndirectFieldDecl *D) {
1059   dumpName(D);
1060   dumpType(D->getType());
1061 
1062   for (auto *Child : D->chain())
1063     dumpDeclRef(Child);
1064 }
1065 
1066 void ASTDumper::VisitFunctionDecl(const FunctionDecl *D) {
1067   dumpName(D);
1068   dumpType(D->getType());
1069 
1070   StorageClass SC = D->getStorageClass();
1071   if (SC != SC_None)
1072     OS << ' ' << VarDecl::getStorageClassSpecifierString(SC);
1073   if (D->isInlineSpecified())
1074     OS << " inline";
1075   if (D->isVirtualAsWritten())
1076     OS << " virtual";
1077   if (D->isModulePrivate())
1078     OS << " __module_private__";
1079 
1080   if (D->isPure())
1081     OS << " pure";
1082   else if (D->isDeletedAsWritten())
1083     OS << " delete";
1084 
1085   if (const FunctionProtoType *FPT = D->getType()->getAs<FunctionProtoType>()) {
1086     FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo();
1087     switch (EPI.ExceptionSpec.Type) {
1088     default: break;
1089     case EST_Unevaluated:
1090       OS << " noexcept-unevaluated " << EPI.ExceptionSpec.SourceDecl;
1091       break;
1092     case EST_Uninstantiated:
1093       OS << " noexcept-uninstantiated " << EPI.ExceptionSpec.SourceTemplate;
1094       break;
1095     }
1096   }
1097 
1098   if (const FunctionTemplateSpecializationInfo *FTSI =
1099           D->getTemplateSpecializationInfo())
1100     dumpTemplateArgumentList(*FTSI->TemplateArguments);
1101 
1102   for (ArrayRef<NamedDecl *>::iterator
1103        I = D->getDeclsInPrototypeScope().begin(),
1104        E = D->getDeclsInPrototypeScope().end(); I != E; ++I)
1105     dumpDecl(*I);
1106 
1107   if (!D->param_begin() && D->getNumParams())
1108     dumpChild([=] { OS << "<<NULL params x " << D->getNumParams() << ">>"; });
1109   else
1110     for (FunctionDecl::param_const_iterator I = D->param_begin(),
1111                                             E = D->param_end();
1112          I != E; ++I)
1113       dumpDecl(*I);
1114 
1115   if (const CXXConstructorDecl *C = dyn_cast<CXXConstructorDecl>(D))
1116     for (CXXConstructorDecl::init_const_iterator I = C->init_begin(),
1117                                                  E = C->init_end();
1118          I != E; ++I)
1119       dumpCXXCtorInitializer(*I);
1120 
1121   if (D->doesThisDeclarationHaveABody())
1122     dumpStmt(D->getBody());
1123 }
1124 
1125 void ASTDumper::VisitFieldDecl(const FieldDecl *D) {
1126   dumpName(D);
1127   dumpType(D->getType());
1128   if (D->isMutable())
1129     OS << " mutable";
1130   if (D->isModulePrivate())
1131     OS << " __module_private__";
1132 
1133   if (D->isBitField())
1134     dumpStmt(D->getBitWidth());
1135   if (Expr *Init = D->getInClassInitializer())
1136     dumpStmt(Init);
1137 }
1138 
1139 void ASTDumper::VisitVarDecl(const VarDecl *D) {
1140   dumpName(D);
1141   dumpType(D->getType());
1142   StorageClass SC = D->getStorageClass();
1143   if (SC != SC_None)
1144     OS << ' ' << VarDecl::getStorageClassSpecifierString(SC);
1145   switch (D->getTLSKind()) {
1146   case VarDecl::TLS_None: break;
1147   case VarDecl::TLS_Static: OS << " tls"; break;
1148   case VarDecl::TLS_Dynamic: OS << " tls_dynamic"; break;
1149   }
1150   if (D->isModulePrivate())
1151     OS << " __module_private__";
1152   if (D->isNRVOVariable())
1153     OS << " nrvo";
1154   if (D->hasInit()) {
1155     switch (D->getInitStyle()) {
1156     case VarDecl::CInit: OS << " cinit"; break;
1157     case VarDecl::CallInit: OS << " callinit"; break;
1158     case VarDecl::ListInit: OS << " listinit"; break;
1159     }
1160     dumpStmt(D->getInit());
1161   }
1162 }
1163 
1164 void ASTDumper::VisitFileScopeAsmDecl(const FileScopeAsmDecl *D) {
1165   dumpStmt(D->getAsmString());
1166 }
1167 
1168 void ASTDumper::VisitImportDecl(const ImportDecl *D) {
1169   OS << ' ' << D->getImportedModule()->getFullModuleName();
1170 }
1171 
1172 //===----------------------------------------------------------------------===//
1173 // C++ Declarations
1174 //===----------------------------------------------------------------------===//
1175 
1176 void ASTDumper::VisitNamespaceDecl(const NamespaceDecl *D) {
1177   dumpName(D);
1178   if (D->isInline())
1179     OS << " inline";
1180   if (!D->isOriginalNamespace())
1181     dumpDeclRef(D->getOriginalNamespace(), "original");
1182 }
1183 
1184 void ASTDumper::VisitUsingDirectiveDecl(const UsingDirectiveDecl *D) {
1185   OS << ' ';
1186   dumpBareDeclRef(D->getNominatedNamespace());
1187 }
1188 
1189 void ASTDumper::VisitNamespaceAliasDecl(const NamespaceAliasDecl *D) {
1190   dumpName(D);
1191   dumpDeclRef(D->getAliasedNamespace());
1192 }
1193 
1194 void ASTDumper::VisitTypeAliasDecl(const TypeAliasDecl *D) {
1195   dumpName(D);
1196   dumpType(D->getUnderlyingType());
1197 }
1198 
1199 void ASTDumper::VisitTypeAliasTemplateDecl(const TypeAliasTemplateDecl *D) {
1200   dumpName(D);
1201   dumpTemplateParameters(D->getTemplateParameters());
1202   dumpDecl(D->getTemplatedDecl());
1203 }
1204 
1205 void ASTDumper::VisitCXXRecordDecl(const CXXRecordDecl *D) {
1206   VisitRecordDecl(D);
1207   if (!D->isCompleteDefinition())
1208     return;
1209 
1210   for (const auto &I : D->bases()) {
1211     dumpChild([=] {
1212       if (I.isVirtual())
1213         OS << "virtual ";
1214       dumpAccessSpecifier(I.getAccessSpecifier());
1215       dumpType(I.getType());
1216       if (I.isPackExpansion())
1217         OS << "...";
1218     });
1219   }
1220 }
1221 
1222 void ASTDumper::VisitStaticAssertDecl(const StaticAssertDecl *D) {
1223   dumpStmt(D->getAssertExpr());
1224   dumpStmt(D->getMessage());
1225 }
1226 
1227 template<typename SpecializationDecl>
1228 void ASTDumper::VisitTemplateDeclSpecialization(const SpecializationDecl *D,
1229                                                 bool DumpExplicitInst,
1230                                                 bool DumpRefOnly) {
1231   bool DumpedAny = false;
1232   for (auto *RedeclWithBadType : D->redecls()) {
1233     // FIXME: The redecls() range sometimes has elements of a less-specific
1234     // type. (In particular, ClassTemplateSpecializationDecl::redecls() gives
1235     // us TagDecls, and should give CXXRecordDecls).
1236     auto *Redecl = dyn_cast<SpecializationDecl>(RedeclWithBadType);
1237     if (!Redecl) {
1238       // Found the injected-class-name for a class template. This will be dumped
1239       // as part of its surrounding class so we don't need to dump it here.
1240       assert(isa<CXXRecordDecl>(RedeclWithBadType) &&
1241              "expected an injected-class-name");
1242       continue;
1243     }
1244 
1245     switch (Redecl->getTemplateSpecializationKind()) {
1246     case TSK_ExplicitInstantiationDeclaration:
1247     case TSK_ExplicitInstantiationDefinition:
1248       if (!DumpExplicitInst)
1249         break;
1250       // Fall through.
1251     case TSK_Undeclared:
1252     case TSK_ImplicitInstantiation:
1253       if (DumpRefOnly)
1254         dumpDeclRef(Redecl);
1255       else
1256         dumpDecl(Redecl);
1257       DumpedAny = true;
1258       break;
1259     case TSK_ExplicitSpecialization:
1260       break;
1261     }
1262   }
1263 
1264   // Ensure we dump at least one decl for each specialization.
1265   if (!DumpedAny)
1266     dumpDeclRef(D);
1267 }
1268 
1269 template<typename TemplateDecl>
1270 void ASTDumper::VisitTemplateDecl(const TemplateDecl *D,
1271                                   bool DumpExplicitInst) {
1272   dumpName(D);
1273   dumpTemplateParameters(D->getTemplateParameters());
1274 
1275   dumpDecl(D->getTemplatedDecl());
1276 
1277   for (auto *Child : D->specializations())
1278     VisitTemplateDeclSpecialization(Child, DumpExplicitInst,
1279                                     !D->isCanonicalDecl());
1280 }
1281 
1282 void ASTDumper::VisitFunctionTemplateDecl(const FunctionTemplateDecl *D) {
1283   // FIXME: We don't add a declaration of a function template specialization
1284   // to its context when it's explicitly instantiated, so dump explicit
1285   // instantiations when we dump the template itself.
1286   VisitTemplateDecl(D, true);
1287 }
1288 
1289 void ASTDumper::VisitClassTemplateDecl(const ClassTemplateDecl *D) {
1290   VisitTemplateDecl(D, false);
1291 }
1292 
1293 void ASTDumper::VisitClassTemplateSpecializationDecl(
1294     const ClassTemplateSpecializationDecl *D) {
1295   VisitCXXRecordDecl(D);
1296   dumpTemplateArgumentList(D->getTemplateArgs());
1297 }
1298 
1299 void ASTDumper::VisitClassTemplatePartialSpecializationDecl(
1300     const ClassTemplatePartialSpecializationDecl *D) {
1301   VisitClassTemplateSpecializationDecl(D);
1302   dumpTemplateParameters(D->getTemplateParameters());
1303 }
1304 
1305 void ASTDumper::VisitClassScopeFunctionSpecializationDecl(
1306     const ClassScopeFunctionSpecializationDecl *D) {
1307   dumpDeclRef(D->getSpecialization());
1308   if (D->hasExplicitTemplateArgs())
1309     dumpTemplateArgumentListInfo(D->templateArgs());
1310 }
1311 
1312 void ASTDumper::VisitVarTemplateDecl(const VarTemplateDecl *D) {
1313   VisitTemplateDecl(D, false);
1314 }
1315 
1316 void ASTDumper::VisitVarTemplateSpecializationDecl(
1317     const VarTemplateSpecializationDecl *D) {
1318   dumpTemplateArgumentList(D->getTemplateArgs());
1319   VisitVarDecl(D);
1320 }
1321 
1322 void ASTDumper::VisitVarTemplatePartialSpecializationDecl(
1323     const VarTemplatePartialSpecializationDecl *D) {
1324   dumpTemplateParameters(D->getTemplateParameters());
1325   VisitVarTemplateSpecializationDecl(D);
1326 }
1327 
1328 void ASTDumper::VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D) {
1329   if (D->wasDeclaredWithTypename())
1330     OS << " typename";
1331   else
1332     OS << " class";
1333   if (D->isParameterPack())
1334     OS << " ...";
1335   dumpName(D);
1336   if (D->hasDefaultArgument())
1337     dumpTemplateArgument(D->getDefaultArgument());
1338 }
1339 
1340 void ASTDumper::VisitNonTypeTemplateParmDecl(const NonTypeTemplateParmDecl *D) {
1341   dumpType(D->getType());
1342   if (D->isParameterPack())
1343     OS << " ...";
1344   dumpName(D);
1345   if (D->hasDefaultArgument())
1346     dumpTemplateArgument(D->getDefaultArgument());
1347 }
1348 
1349 void ASTDumper::VisitTemplateTemplateParmDecl(
1350     const TemplateTemplateParmDecl *D) {
1351   if (D->isParameterPack())
1352     OS << " ...";
1353   dumpName(D);
1354   dumpTemplateParameters(D->getTemplateParameters());
1355   if (D->hasDefaultArgument())
1356     dumpTemplateArgumentLoc(D->getDefaultArgument());
1357 }
1358 
1359 void ASTDumper::VisitUsingDecl(const UsingDecl *D) {
1360   OS << ' ';
1361   D->getQualifier()->print(OS, D->getASTContext().getPrintingPolicy());
1362   OS << D->getNameAsString();
1363 }
1364 
1365 void ASTDumper::VisitUnresolvedUsingTypenameDecl(
1366     const UnresolvedUsingTypenameDecl *D) {
1367   OS << ' ';
1368   D->getQualifier()->print(OS, D->getASTContext().getPrintingPolicy());
1369   OS << D->getNameAsString();
1370 }
1371 
1372 void ASTDumper::VisitUnresolvedUsingValueDecl(const UnresolvedUsingValueDecl *D) {
1373   OS << ' ';
1374   D->getQualifier()->print(OS, D->getASTContext().getPrintingPolicy());
1375   OS << D->getNameAsString();
1376   dumpType(D->getType());
1377 }
1378 
1379 void ASTDumper::VisitUsingShadowDecl(const UsingShadowDecl *D) {
1380   OS << ' ';
1381   dumpBareDeclRef(D->getTargetDecl());
1382 }
1383 
1384 void ASTDumper::VisitLinkageSpecDecl(const LinkageSpecDecl *D) {
1385   switch (D->getLanguage()) {
1386   case LinkageSpecDecl::lang_c: OS << " C"; break;
1387   case LinkageSpecDecl::lang_cxx: OS << " C++"; break;
1388   }
1389 }
1390 
1391 void ASTDumper::VisitAccessSpecDecl(const AccessSpecDecl *D) {
1392   OS << ' ';
1393   dumpAccessSpecifier(D->getAccess());
1394 }
1395 
1396 void ASTDumper::VisitFriendDecl(const FriendDecl *D) {
1397   if (TypeSourceInfo *T = D->getFriendType())
1398     dumpType(T->getType());
1399   else
1400     dumpDecl(D->getFriendDecl());
1401 }
1402 
1403 //===----------------------------------------------------------------------===//
1404 // Obj-C Declarations
1405 //===----------------------------------------------------------------------===//
1406 
1407 void ASTDumper::VisitObjCIvarDecl(const ObjCIvarDecl *D) {
1408   dumpName(D);
1409   dumpType(D->getType());
1410   if (D->getSynthesize())
1411     OS << " synthesize";
1412 
1413   switch (D->getAccessControl()) {
1414   case ObjCIvarDecl::None:
1415     OS << " none";
1416     break;
1417   case ObjCIvarDecl::Private:
1418     OS << " private";
1419     break;
1420   case ObjCIvarDecl::Protected:
1421     OS << " protected";
1422     break;
1423   case ObjCIvarDecl::Public:
1424     OS << " public";
1425     break;
1426   case ObjCIvarDecl::Package:
1427     OS << " package";
1428     break;
1429   }
1430 }
1431 
1432 void ASTDumper::VisitObjCMethodDecl(const ObjCMethodDecl *D) {
1433   if (D->isInstanceMethod())
1434     OS << " -";
1435   else
1436     OS << " +";
1437   dumpName(D);
1438   dumpType(D->getReturnType());
1439 
1440   if (D->isThisDeclarationADefinition()) {
1441     dumpDeclContext(D);
1442   } else {
1443     for (ObjCMethodDecl::param_const_iterator I = D->param_begin(),
1444                                               E = D->param_end();
1445          I != E; ++I)
1446       dumpDecl(*I);
1447   }
1448 
1449   if (D->isVariadic())
1450     dumpChild([=] { OS << "..."; });
1451 
1452   if (D->hasBody())
1453     dumpStmt(D->getBody());
1454 }
1455 
1456 void ASTDumper::VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
1457   dumpName(D);
1458   dumpDeclRef(D->getClassInterface());
1459   dumpDeclRef(D->getImplementation());
1460   for (ObjCCategoryDecl::protocol_iterator I = D->protocol_begin(),
1461                                            E = D->protocol_end();
1462        I != E; ++I)
1463     dumpDeclRef(*I);
1464 }
1465 
1466 void ASTDumper::VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
1467   dumpName(D);
1468   dumpDeclRef(D->getClassInterface());
1469   dumpDeclRef(D->getCategoryDecl());
1470 }
1471 
1472 void ASTDumper::VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
1473   dumpName(D);
1474 
1475   for (auto *Child : D->protocols())
1476     dumpDeclRef(Child);
1477 }
1478 
1479 void ASTDumper::VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
1480   dumpName(D);
1481   dumpDeclRef(D->getSuperClass(), "super");
1482 
1483   dumpDeclRef(D->getImplementation());
1484   for (auto *Child : D->protocols())
1485     dumpDeclRef(Child);
1486 }
1487 
1488 void ASTDumper::VisitObjCImplementationDecl(const ObjCImplementationDecl *D) {
1489   dumpName(D);
1490   dumpDeclRef(D->getSuperClass(), "super");
1491   dumpDeclRef(D->getClassInterface());
1492   for (ObjCImplementationDecl::init_const_iterator I = D->init_begin(),
1493                                                    E = D->init_end();
1494        I != E; ++I)
1495     dumpCXXCtorInitializer(*I);
1496 }
1497 
1498 void ASTDumper::VisitObjCCompatibleAliasDecl(const ObjCCompatibleAliasDecl *D) {
1499   dumpName(D);
1500   dumpDeclRef(D->getClassInterface());
1501 }
1502 
1503 void ASTDumper::VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
1504   dumpName(D);
1505   dumpType(D->getType());
1506 
1507   if (D->getPropertyImplementation() == ObjCPropertyDecl::Required)
1508     OS << " required";
1509   else if (D->getPropertyImplementation() == ObjCPropertyDecl::Optional)
1510     OS << " optional";
1511 
1512   ObjCPropertyDecl::PropertyAttributeKind Attrs = D->getPropertyAttributes();
1513   if (Attrs != ObjCPropertyDecl::OBJC_PR_noattr) {
1514     if (Attrs & ObjCPropertyDecl::OBJC_PR_readonly)
1515       OS << " readonly";
1516     if (Attrs & ObjCPropertyDecl::OBJC_PR_assign)
1517       OS << " assign";
1518     if (Attrs & ObjCPropertyDecl::OBJC_PR_readwrite)
1519       OS << " readwrite";
1520     if (Attrs & ObjCPropertyDecl::OBJC_PR_retain)
1521       OS << " retain";
1522     if (Attrs & ObjCPropertyDecl::OBJC_PR_copy)
1523       OS << " copy";
1524     if (Attrs & ObjCPropertyDecl::OBJC_PR_nonatomic)
1525       OS << " nonatomic";
1526     if (Attrs & ObjCPropertyDecl::OBJC_PR_atomic)
1527       OS << " atomic";
1528     if (Attrs & ObjCPropertyDecl::OBJC_PR_weak)
1529       OS << " weak";
1530     if (Attrs & ObjCPropertyDecl::OBJC_PR_strong)
1531       OS << " strong";
1532     if (Attrs & ObjCPropertyDecl::OBJC_PR_unsafe_unretained)
1533       OS << " unsafe_unretained";
1534     if (Attrs & ObjCPropertyDecl::OBJC_PR_getter)
1535       dumpDeclRef(D->getGetterMethodDecl(), "getter");
1536     if (Attrs & ObjCPropertyDecl::OBJC_PR_setter)
1537       dumpDeclRef(D->getSetterMethodDecl(), "setter");
1538   }
1539 }
1540 
1541 void ASTDumper::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
1542   dumpName(D->getPropertyDecl());
1543   if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
1544     OS << " synthesize";
1545   else
1546     OS << " dynamic";
1547   dumpDeclRef(D->getPropertyDecl());
1548   dumpDeclRef(D->getPropertyIvarDecl());
1549 }
1550 
1551 void ASTDumper::VisitBlockDecl(const BlockDecl *D) {
1552   for (auto I : D->params())
1553     dumpDecl(I);
1554 
1555   if (D->isVariadic())
1556     dumpChild([=]{ OS << "..."; });
1557 
1558   if (D->capturesCXXThis())
1559     dumpChild([=]{ OS << "capture this"; });
1560 
1561   for (const auto &I : D->captures()) {
1562     dumpChild([=] {
1563       OS << "capture";
1564       if (I.isByRef())
1565         OS << " byref";
1566       if (I.isNested())
1567         OS << " nested";
1568       if (I.getVariable()) {
1569         OS << ' ';
1570         dumpBareDeclRef(I.getVariable());
1571       }
1572       if (I.hasCopyExpr())
1573         dumpStmt(I.getCopyExpr());
1574     });
1575   }
1576   dumpStmt(D->getBody());
1577 }
1578 
1579 //===----------------------------------------------------------------------===//
1580 //  Stmt dumping methods.
1581 //===----------------------------------------------------------------------===//
1582 
1583 void ASTDumper::dumpStmt(const Stmt *S) {
1584   dumpChild([=] {
1585     if (!S) {
1586       ColorScope Color(*this, NullColor);
1587       OS << "<<<NULL>>>";
1588       return;
1589     }
1590 
1591     if (const DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
1592       VisitDeclStmt(DS);
1593       return;
1594     }
1595 
1596     ConstStmtVisitor<ASTDumper>::Visit(S);
1597 
1598     for (Stmt::const_child_range CI = S->children(); CI; ++CI)
1599       dumpStmt(*CI);
1600   });
1601 }
1602 
1603 void ASTDumper::VisitStmt(const Stmt *Node) {
1604   {
1605     ColorScope Color(*this, StmtColor);
1606     OS << Node->getStmtClassName();
1607   }
1608   dumpPointer(Node);
1609   dumpSourceRange(Node->getSourceRange());
1610 }
1611 
1612 void ASTDumper::VisitDeclStmt(const DeclStmt *Node) {
1613   VisitStmt(Node);
1614   for (DeclStmt::const_decl_iterator I = Node->decl_begin(),
1615                                      E = Node->decl_end();
1616        I != E; ++I)
1617     dumpDecl(*I);
1618 }
1619 
1620 void ASTDumper::VisitAttributedStmt(const AttributedStmt *Node) {
1621   VisitStmt(Node);
1622   for (ArrayRef<const Attr *>::iterator I = Node->getAttrs().begin(),
1623                                         E = Node->getAttrs().end();
1624        I != E; ++I)
1625     dumpAttr(*I);
1626 }
1627 
1628 void ASTDumper::VisitLabelStmt(const LabelStmt *Node) {
1629   VisitStmt(Node);
1630   OS << " '" << Node->getName() << "'";
1631 }
1632 
1633 void ASTDumper::VisitGotoStmt(const GotoStmt *Node) {
1634   VisitStmt(Node);
1635   OS << " '" << Node->getLabel()->getName() << "'";
1636   dumpPointer(Node->getLabel());
1637 }
1638 
1639 void ASTDumper::VisitCXXCatchStmt(const CXXCatchStmt *Node) {
1640   VisitStmt(Node);
1641   dumpDecl(Node->getExceptionDecl());
1642 }
1643 
1644 //===----------------------------------------------------------------------===//
1645 //  Expr dumping methods.
1646 //===----------------------------------------------------------------------===//
1647 
1648 void ASTDumper::VisitExpr(const Expr *Node) {
1649   VisitStmt(Node);
1650   dumpType(Node->getType());
1651 
1652   {
1653     ColorScope Color(*this, ValueKindColor);
1654     switch (Node->getValueKind()) {
1655     case VK_RValue:
1656       break;
1657     case VK_LValue:
1658       OS << " lvalue";
1659       break;
1660     case VK_XValue:
1661       OS << " xvalue";
1662       break;
1663     }
1664   }
1665 
1666   {
1667     ColorScope Color(*this, ObjectKindColor);
1668     switch (Node->getObjectKind()) {
1669     case OK_Ordinary:
1670       break;
1671     case OK_BitField:
1672       OS << " bitfield";
1673       break;
1674     case OK_ObjCProperty:
1675       OS << " objcproperty";
1676       break;
1677     case OK_ObjCSubscript:
1678       OS << " objcsubscript";
1679       break;
1680     case OK_VectorComponent:
1681       OS << " vectorcomponent";
1682       break;
1683     }
1684   }
1685 }
1686 
1687 static void dumpBasePath(raw_ostream &OS, const CastExpr *Node) {
1688   if (Node->path_empty())
1689     return;
1690 
1691   OS << " (";
1692   bool First = true;
1693   for (CastExpr::path_const_iterator I = Node->path_begin(),
1694                                      E = Node->path_end();
1695        I != E; ++I) {
1696     const CXXBaseSpecifier *Base = *I;
1697     if (!First)
1698       OS << " -> ";
1699 
1700     const CXXRecordDecl *RD =
1701     cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
1702 
1703     if (Base->isVirtual())
1704       OS << "virtual ";
1705     OS << RD->getName();
1706     First = false;
1707   }
1708 
1709   OS << ')';
1710 }
1711 
1712 void ASTDumper::VisitCastExpr(const CastExpr *Node) {
1713   VisitExpr(Node);
1714   OS << " <";
1715   {
1716     ColorScope Color(*this, CastColor);
1717     OS << Node->getCastKindName();
1718   }
1719   dumpBasePath(OS, Node);
1720   OS << ">";
1721 }
1722 
1723 void ASTDumper::VisitDeclRefExpr(const DeclRefExpr *Node) {
1724   VisitExpr(Node);
1725 
1726   OS << " ";
1727   dumpBareDeclRef(Node->getDecl());
1728   if (Node->getDecl() != Node->getFoundDecl()) {
1729     OS << " (";
1730     dumpBareDeclRef(Node->getFoundDecl());
1731     OS << ")";
1732   }
1733 }
1734 
1735 void ASTDumper::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *Node) {
1736   VisitExpr(Node);
1737   OS << " (";
1738   if (!Node->requiresADL())
1739     OS << "no ";
1740   OS << "ADL) = '" << Node->getName() << '\'';
1741 
1742   UnresolvedLookupExpr::decls_iterator
1743     I = Node->decls_begin(), E = Node->decls_end();
1744   if (I == E)
1745     OS << " empty";
1746   for (; I != E; ++I)
1747     dumpPointer(*I);
1748 }
1749 
1750 void ASTDumper::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *Node) {
1751   VisitExpr(Node);
1752 
1753   {
1754     ColorScope Color(*this, DeclKindNameColor);
1755     OS << " " << Node->getDecl()->getDeclKindName() << "Decl";
1756   }
1757   OS << "='" << *Node->getDecl() << "'";
1758   dumpPointer(Node->getDecl());
1759   if (Node->isFreeIvar())
1760     OS << " isFreeIvar";
1761 }
1762 
1763 void ASTDumper::VisitPredefinedExpr(const PredefinedExpr *Node) {
1764   VisitExpr(Node);
1765   OS << " " << PredefinedExpr::getIdentTypeName(Node->getIdentType());
1766 }
1767 
1768 void ASTDumper::VisitCharacterLiteral(const CharacterLiteral *Node) {
1769   VisitExpr(Node);
1770   ColorScope Color(*this, ValueColor);
1771   OS << " " << Node->getValue();
1772 }
1773 
1774 void ASTDumper::VisitIntegerLiteral(const IntegerLiteral *Node) {
1775   VisitExpr(Node);
1776 
1777   bool isSigned = Node->getType()->isSignedIntegerType();
1778   ColorScope Color(*this, ValueColor);
1779   OS << " " << Node->getValue().toString(10, isSigned);
1780 }
1781 
1782 void ASTDumper::VisitFloatingLiteral(const FloatingLiteral *Node) {
1783   VisitExpr(Node);
1784   ColorScope Color(*this, ValueColor);
1785   OS << " " << Node->getValueAsApproximateDouble();
1786 }
1787 
1788 void ASTDumper::VisitStringLiteral(const StringLiteral *Str) {
1789   VisitExpr(Str);
1790   ColorScope Color(*this, ValueColor);
1791   OS << " ";
1792   Str->outputString(OS);
1793 }
1794 
1795 void ASTDumper::VisitInitListExpr(const InitListExpr *ILE) {
1796   VisitExpr(ILE);
1797   if (auto *Filler = ILE->getArrayFiller()) {
1798     dumpChild([=] {
1799       OS << "array filler";
1800       dumpStmt(Filler);
1801     });
1802   }
1803   if (auto *Field = ILE->getInitializedFieldInUnion()) {
1804     OS << " field ";
1805     dumpBareDeclRef(Field);
1806   }
1807 }
1808 
1809 void ASTDumper::VisitUnaryOperator(const UnaryOperator *Node) {
1810   VisitExpr(Node);
1811   OS << " " << (Node->isPostfix() ? "postfix" : "prefix")
1812      << " '" << UnaryOperator::getOpcodeStr(Node->getOpcode()) << "'";
1813 }
1814 
1815 void ASTDumper::VisitUnaryExprOrTypeTraitExpr(
1816     const UnaryExprOrTypeTraitExpr *Node) {
1817   VisitExpr(Node);
1818   switch(Node->getKind()) {
1819   case UETT_SizeOf:
1820     OS << " sizeof";
1821     break;
1822   case UETT_AlignOf:
1823     OS << " alignof";
1824     break;
1825   case UETT_VecStep:
1826     OS << " vec_step";
1827     break;
1828   }
1829   if (Node->isArgumentType())
1830     dumpType(Node->getArgumentType());
1831 }
1832 
1833 void ASTDumper::VisitMemberExpr(const MemberExpr *Node) {
1834   VisitExpr(Node);
1835   OS << " " << (Node->isArrow() ? "->" : ".") << *Node->getMemberDecl();
1836   dumpPointer(Node->getMemberDecl());
1837 }
1838 
1839 void ASTDumper::VisitExtVectorElementExpr(const ExtVectorElementExpr *Node) {
1840   VisitExpr(Node);
1841   OS << " " << Node->getAccessor().getNameStart();
1842 }
1843 
1844 void ASTDumper::VisitBinaryOperator(const BinaryOperator *Node) {
1845   VisitExpr(Node);
1846   OS << " '" << BinaryOperator::getOpcodeStr(Node->getOpcode()) << "'";
1847 }
1848 
1849 void ASTDumper::VisitCompoundAssignOperator(
1850     const CompoundAssignOperator *Node) {
1851   VisitExpr(Node);
1852   OS << " '" << BinaryOperator::getOpcodeStr(Node->getOpcode())
1853      << "' ComputeLHSTy=";
1854   dumpBareType(Node->getComputationLHSType());
1855   OS << " ComputeResultTy=";
1856   dumpBareType(Node->getComputationResultType());
1857 }
1858 
1859 void ASTDumper::VisitBlockExpr(const BlockExpr *Node) {
1860   VisitExpr(Node);
1861   dumpDecl(Node->getBlockDecl());
1862 }
1863 
1864 void ASTDumper::VisitOpaqueValueExpr(const OpaqueValueExpr *Node) {
1865   VisitExpr(Node);
1866 
1867   if (Expr *Source = Node->getSourceExpr())
1868     dumpStmt(Source);
1869 }
1870 
1871 // GNU extensions.
1872 
1873 void ASTDumper::VisitAddrLabelExpr(const AddrLabelExpr *Node) {
1874   VisitExpr(Node);
1875   OS << " " << Node->getLabel()->getName();
1876   dumpPointer(Node->getLabel());
1877 }
1878 
1879 //===----------------------------------------------------------------------===//
1880 // C++ Expressions
1881 //===----------------------------------------------------------------------===//
1882 
1883 void ASTDumper::VisitCXXNamedCastExpr(const CXXNamedCastExpr *Node) {
1884   VisitExpr(Node);
1885   OS << " " << Node->getCastName()
1886      << "<" << Node->getTypeAsWritten().getAsString() << ">"
1887      << " <" << Node->getCastKindName();
1888   dumpBasePath(OS, Node);
1889   OS << ">";
1890 }
1891 
1892 void ASTDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *Node) {
1893   VisitExpr(Node);
1894   OS << " " << (Node->getValue() ? "true" : "false");
1895 }
1896 
1897 void ASTDumper::VisitCXXThisExpr(const CXXThisExpr *Node) {
1898   VisitExpr(Node);
1899   OS << " this";
1900 }
1901 
1902 void ASTDumper::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *Node) {
1903   VisitExpr(Node);
1904   OS << " functional cast to " << Node->getTypeAsWritten().getAsString()
1905      << " <" << Node->getCastKindName() << ">";
1906 }
1907 
1908 void ASTDumper::VisitCXXConstructExpr(const CXXConstructExpr *Node) {
1909   VisitExpr(Node);
1910   CXXConstructorDecl *Ctor = Node->getConstructor();
1911   dumpType(Ctor->getType());
1912   if (Node->isElidable())
1913     OS << " elidable";
1914   if (Node->requiresZeroInitialization())
1915     OS << " zeroing";
1916 }
1917 
1918 void ASTDumper::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *Node) {
1919   VisitExpr(Node);
1920   OS << " ";
1921   dumpCXXTemporary(Node->getTemporary());
1922 }
1923 
1924 void ASTDumper::VisitCXXNewExpr(const CXXNewExpr *Node) {
1925   VisitExpr(Node);
1926   if (Node->isGlobalNew())
1927     OS << " global";
1928   if (Node->isArray())
1929     OS << " array";
1930   if (Node->getOperatorNew()) {
1931     OS << ' ';
1932     dumpBareDeclRef(Node->getOperatorNew());
1933   }
1934   // We could dump the deallocation function used in case of error, but it's
1935   // usually not that interesting.
1936 }
1937 
1938 void ASTDumper::VisitCXXDeleteExpr(const CXXDeleteExpr *Node) {
1939   VisitExpr(Node);
1940   if (Node->isGlobalDelete())
1941     OS << " global";
1942   if (Node->isArrayForm())
1943     OS << " array";
1944   if (Node->getOperatorDelete()) {
1945     OS << ' ';
1946     dumpBareDeclRef(Node->getOperatorDelete());
1947   }
1948 }
1949 
1950 void
1951 ASTDumper::VisitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *Node) {
1952   VisitExpr(Node);
1953   if (const ValueDecl *VD = Node->getExtendingDecl()) {
1954     OS << " extended by ";
1955     dumpBareDeclRef(VD);
1956   }
1957 }
1958 
1959 void ASTDumper::VisitExprWithCleanups(const ExprWithCleanups *Node) {
1960   VisitExpr(Node);
1961   for (unsigned i = 0, e = Node->getNumObjects(); i != e; ++i)
1962     dumpDeclRef(Node->getObject(i), "cleanup");
1963 }
1964 
1965 void ASTDumper::dumpCXXTemporary(const CXXTemporary *Temporary) {
1966   OS << "(CXXTemporary";
1967   dumpPointer(Temporary);
1968   OS << ")";
1969 }
1970 
1971 void ASTDumper::VisitSizeOfPackExpr(const SizeOfPackExpr *Node) {
1972   VisitExpr(Node);
1973   dumpPointer(Node->getPack());
1974   dumpName(Node->getPack());
1975 }
1976 
1977 
1978 //===----------------------------------------------------------------------===//
1979 // Obj-C Expressions
1980 //===----------------------------------------------------------------------===//
1981 
1982 void ASTDumper::VisitObjCMessageExpr(const ObjCMessageExpr *Node) {
1983   VisitExpr(Node);
1984   OS << " selector=";
1985   Node->getSelector().print(OS);
1986   switch (Node->getReceiverKind()) {
1987   case ObjCMessageExpr::Instance:
1988     break;
1989 
1990   case ObjCMessageExpr::Class:
1991     OS << " class=";
1992     dumpBareType(Node->getClassReceiver());
1993     break;
1994 
1995   case ObjCMessageExpr::SuperInstance:
1996     OS << " super (instance)";
1997     break;
1998 
1999   case ObjCMessageExpr::SuperClass:
2000     OS << " super (class)";
2001     break;
2002   }
2003 }
2004 
2005 void ASTDumper::VisitObjCBoxedExpr(const ObjCBoxedExpr *Node) {
2006   VisitExpr(Node);
2007   OS << " selector=";
2008   Node->getBoxingMethod()->getSelector().print(OS);
2009 }
2010 
2011 void ASTDumper::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *Node) {
2012   VisitStmt(Node);
2013   if (const VarDecl *CatchParam = Node->getCatchParamDecl())
2014     dumpDecl(CatchParam);
2015   else
2016     OS << " catch all";
2017 }
2018 
2019 void ASTDumper::VisitObjCEncodeExpr(const ObjCEncodeExpr *Node) {
2020   VisitExpr(Node);
2021   dumpType(Node->getEncodedType());
2022 }
2023 
2024 void ASTDumper::VisitObjCSelectorExpr(const ObjCSelectorExpr *Node) {
2025   VisitExpr(Node);
2026 
2027   OS << " ";
2028   Node->getSelector().print(OS);
2029 }
2030 
2031 void ASTDumper::VisitObjCProtocolExpr(const ObjCProtocolExpr *Node) {
2032   VisitExpr(Node);
2033 
2034   OS << ' ' << *Node->getProtocol();
2035 }
2036 
2037 void ASTDumper::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *Node) {
2038   VisitExpr(Node);
2039   if (Node->isImplicitProperty()) {
2040     OS << " Kind=MethodRef Getter=\"";
2041     if (Node->getImplicitPropertyGetter())
2042       Node->getImplicitPropertyGetter()->getSelector().print(OS);
2043     else
2044       OS << "(null)";
2045 
2046     OS << "\" Setter=\"";
2047     if (ObjCMethodDecl *Setter = Node->getImplicitPropertySetter())
2048       Setter->getSelector().print(OS);
2049     else
2050       OS << "(null)";
2051     OS << "\"";
2052   } else {
2053     OS << " Kind=PropertyRef Property=\"" << *Node->getExplicitProperty() <<'"';
2054   }
2055 
2056   if (Node->isSuperReceiver())
2057     OS << " super";
2058 
2059   OS << " Messaging=";
2060   if (Node->isMessagingGetter() && Node->isMessagingSetter())
2061     OS << "Getter&Setter";
2062   else if (Node->isMessagingGetter())
2063     OS << "Getter";
2064   else if (Node->isMessagingSetter())
2065     OS << "Setter";
2066 }
2067 
2068 void ASTDumper::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *Node) {
2069   VisitExpr(Node);
2070   if (Node->isArraySubscriptRefExpr())
2071     OS << " Kind=ArraySubscript GetterForArray=\"";
2072   else
2073     OS << " Kind=DictionarySubscript GetterForDictionary=\"";
2074   if (Node->getAtIndexMethodDecl())
2075     Node->getAtIndexMethodDecl()->getSelector().print(OS);
2076   else
2077     OS << "(null)";
2078 
2079   if (Node->isArraySubscriptRefExpr())
2080     OS << "\" SetterForArray=\"";
2081   else
2082     OS << "\" SetterForDictionary=\"";
2083   if (Node->setAtIndexMethodDecl())
2084     Node->setAtIndexMethodDecl()->getSelector().print(OS);
2085   else
2086     OS << "(null)";
2087 }
2088 
2089 void ASTDumper::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *Node) {
2090   VisitExpr(Node);
2091   OS << " " << (Node->getValue() ? "__objc_yes" : "__objc_no");
2092 }
2093 
2094 //===----------------------------------------------------------------------===//
2095 // Comments
2096 //===----------------------------------------------------------------------===//
2097 
2098 const char *ASTDumper::getCommandName(unsigned CommandID) {
2099   if (Traits)
2100     return Traits->getCommandInfo(CommandID)->Name;
2101   const CommandInfo *Info = CommandTraits::getBuiltinCommandInfo(CommandID);
2102   if (Info)
2103     return Info->Name;
2104   return "<not a builtin command>";
2105 }
2106 
2107 void ASTDumper::dumpFullComment(const FullComment *C) {
2108   if (!C)
2109     return;
2110 
2111   FC = C;
2112   dumpComment(C);
2113   FC = nullptr;
2114 }
2115 
2116 void ASTDumper::dumpComment(const Comment *C) {
2117   dumpChild([=] {
2118     if (!C) {
2119       ColorScope Color(*this, NullColor);
2120       OS << "<<<NULL>>>";
2121       return;
2122     }
2123 
2124     {
2125       ColorScope Color(*this, CommentColor);
2126       OS << C->getCommentKindName();
2127     }
2128     dumpPointer(C);
2129     dumpSourceRange(C->getSourceRange());
2130     ConstCommentVisitor<ASTDumper>::visit(C);
2131     for (Comment::child_iterator I = C->child_begin(), E = C->child_end();
2132          I != E; ++I)
2133       dumpComment(*I);
2134   });
2135 }
2136 
2137 void ASTDumper::visitTextComment(const TextComment *C) {
2138   OS << " Text=\"" << C->getText() << "\"";
2139 }
2140 
2141 void ASTDumper::visitInlineCommandComment(const InlineCommandComment *C) {
2142   OS << " Name=\"" << getCommandName(C->getCommandID()) << "\"";
2143   switch (C->getRenderKind()) {
2144   case InlineCommandComment::RenderNormal:
2145     OS << " RenderNormal";
2146     break;
2147   case InlineCommandComment::RenderBold:
2148     OS << " RenderBold";
2149     break;
2150   case InlineCommandComment::RenderMonospaced:
2151     OS << " RenderMonospaced";
2152     break;
2153   case InlineCommandComment::RenderEmphasized:
2154     OS << " RenderEmphasized";
2155     break;
2156   }
2157 
2158   for (unsigned i = 0, e = C->getNumArgs(); i != e; ++i)
2159     OS << " Arg[" << i << "]=\"" << C->getArgText(i) << "\"";
2160 }
2161 
2162 void ASTDumper::visitHTMLStartTagComment(const HTMLStartTagComment *C) {
2163   OS << " Name=\"" << C->getTagName() << "\"";
2164   if (C->getNumAttrs() != 0) {
2165     OS << " Attrs: ";
2166     for (unsigned i = 0, e = C->getNumAttrs(); i != e; ++i) {
2167       const HTMLStartTagComment::Attribute &Attr = C->getAttr(i);
2168       OS << " \"" << Attr.Name << "=\"" << Attr.Value << "\"";
2169     }
2170   }
2171   if (C->isSelfClosing())
2172     OS << " SelfClosing";
2173 }
2174 
2175 void ASTDumper::visitHTMLEndTagComment(const HTMLEndTagComment *C) {
2176   OS << " Name=\"" << C->getTagName() << "\"";
2177 }
2178 
2179 void ASTDumper::visitBlockCommandComment(const BlockCommandComment *C) {
2180   OS << " Name=\"" << getCommandName(C->getCommandID()) << "\"";
2181   for (unsigned i = 0, e = C->getNumArgs(); i != e; ++i)
2182     OS << " Arg[" << i << "]=\"" << C->getArgText(i) << "\"";
2183 }
2184 
2185 void ASTDumper::visitParamCommandComment(const ParamCommandComment *C) {
2186   OS << " " << ParamCommandComment::getDirectionAsString(C->getDirection());
2187 
2188   if (C->isDirectionExplicit())
2189     OS << " explicitly";
2190   else
2191     OS << " implicitly";
2192 
2193   if (C->hasParamName()) {
2194     if (C->isParamIndexValid())
2195       OS << " Param=\"" << C->getParamName(FC) << "\"";
2196     else
2197       OS << " Param=\"" << C->getParamNameAsWritten() << "\"";
2198   }
2199 
2200   if (C->isParamIndexValid() && !C->isVarArgParam())
2201     OS << " ParamIndex=" << C->getParamIndex();
2202 }
2203 
2204 void ASTDumper::visitTParamCommandComment(const TParamCommandComment *C) {
2205   if (C->hasParamName()) {
2206     if (C->isPositionValid())
2207       OS << " Param=\"" << C->getParamName(FC) << "\"";
2208     else
2209       OS << " Param=\"" << C->getParamNameAsWritten() << "\"";
2210   }
2211 
2212   if (C->isPositionValid()) {
2213     OS << " Position=<";
2214     for (unsigned i = 0, e = C->getDepth(); i != e; ++i) {
2215       OS << C->getIndex(i);
2216       if (i != e - 1)
2217         OS << ", ";
2218     }
2219     OS << ">";
2220   }
2221 }
2222 
2223 void ASTDumper::visitVerbatimBlockComment(const VerbatimBlockComment *C) {
2224   OS << " Name=\"" << getCommandName(C->getCommandID()) << "\""
2225         " CloseName=\"" << C->getCloseName() << "\"";
2226 }
2227 
2228 void ASTDumper::visitVerbatimBlockLineComment(
2229     const VerbatimBlockLineComment *C) {
2230   OS << " Text=\"" << C->getText() << "\"";
2231 }
2232 
2233 void ASTDumper::visitVerbatimLineComment(const VerbatimLineComment *C) {
2234   OS << " Text=\"" << C->getText() << "\"";
2235 }
2236 
2237 //===----------------------------------------------------------------------===//
2238 // Type method implementations
2239 //===----------------------------------------------------------------------===//
2240 
2241 void QualType::dump(const char *msg) const {
2242   if (msg)
2243     llvm::errs() << msg << ": ";
2244   dump();
2245 }
2246 
2247 LLVM_DUMP_METHOD void QualType::dump() const {
2248   ASTDumper Dumper(llvm::errs(), nullptr, nullptr);
2249   Dumper.dumpTypeAsChild(*this);
2250 }
2251 
2252 LLVM_DUMP_METHOD void Type::dump() const { QualType(this, 0).dump(); }
2253 
2254 //===----------------------------------------------------------------------===//
2255 // Decl method implementations
2256 //===----------------------------------------------------------------------===//
2257 
2258 LLVM_DUMP_METHOD void Decl::dump() const { dump(llvm::errs()); }
2259 
2260 LLVM_DUMP_METHOD void Decl::dump(raw_ostream &OS) const {
2261   ASTDumper P(OS, &getASTContext().getCommentCommandTraits(),
2262               &getASTContext().getSourceManager());
2263   P.dumpDecl(this);
2264 }
2265 
2266 LLVM_DUMP_METHOD void Decl::dumpColor() const {
2267   ASTDumper P(llvm::errs(), &getASTContext().getCommentCommandTraits(),
2268               &getASTContext().getSourceManager(), /*ShowColors*/true);
2269   P.dumpDecl(this);
2270 }
2271 
2272 LLVM_DUMP_METHOD void DeclContext::dumpLookups() const {
2273   dumpLookups(llvm::errs());
2274 }
2275 
2276 LLVM_DUMP_METHOD void DeclContext::dumpLookups(raw_ostream &OS,
2277                                                bool DumpDecls) const {
2278   const DeclContext *DC = this;
2279   while (!DC->isTranslationUnit())
2280     DC = DC->getParent();
2281   ASTContext &Ctx = cast<TranslationUnitDecl>(DC)->getASTContext();
2282   ASTDumper P(OS, &Ctx.getCommentCommandTraits(), &Ctx.getSourceManager());
2283   P.dumpLookups(this, DumpDecls);
2284 }
2285 
2286 //===----------------------------------------------------------------------===//
2287 // Stmt method implementations
2288 //===----------------------------------------------------------------------===//
2289 
2290 LLVM_DUMP_METHOD void Stmt::dump(SourceManager &SM) const {
2291   dump(llvm::errs(), SM);
2292 }
2293 
2294 LLVM_DUMP_METHOD void Stmt::dump(raw_ostream &OS, SourceManager &SM) const {
2295   ASTDumper P(OS, nullptr, &SM);
2296   P.dumpStmt(this);
2297 }
2298 
2299 LLVM_DUMP_METHOD void Stmt::dump(raw_ostream &OS) const {
2300   ASTDumper P(OS, nullptr, nullptr);
2301   P.dumpStmt(this);
2302 }
2303 
2304 LLVM_DUMP_METHOD void Stmt::dump() const {
2305   ASTDumper P(llvm::errs(), nullptr, nullptr);
2306   P.dumpStmt(this);
2307 }
2308 
2309 LLVM_DUMP_METHOD void Stmt::dumpColor() const {
2310   ASTDumper P(llvm::errs(), nullptr, nullptr, /*ShowColors*/true);
2311   P.dumpStmt(this);
2312 }
2313 
2314 //===----------------------------------------------------------------------===//
2315 // Comment method implementations
2316 //===----------------------------------------------------------------------===//
2317 
2318 LLVM_DUMP_METHOD void Comment::dump() const {
2319   dump(llvm::errs(), nullptr, nullptr);
2320 }
2321 
2322 LLVM_DUMP_METHOD void Comment::dump(const ASTContext &Context) const {
2323   dump(llvm::errs(), &Context.getCommentCommandTraits(),
2324        &Context.getSourceManager());
2325 }
2326 
2327 void Comment::dump(raw_ostream &OS, const CommandTraits *Traits,
2328                    const SourceManager *SM) const {
2329   const FullComment *FC = dyn_cast<FullComment>(this);
2330   ASTDumper D(OS, Traits, SM);
2331   D.dumpFullComment(FC);
2332 }
2333 
2334 LLVM_DUMP_METHOD void Comment::dumpColor() const {
2335   const FullComment *FC = dyn_cast<FullComment>(this);
2336   ASTDumper D(llvm::errs(), nullptr, nullptr, /*ShowColors*/true);
2337   D.dumpFullComment(FC);
2338 }
2339