xref: /freebsd/contrib/llvm-project/clang/lib/AST/TextNodeDumper.cpp (revision 9e5787d2284e187abb5b654d924394a65772e004) 
1 //===--- TextNodeDumper.cpp - Printing of AST nodes -----------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements AST dumping of components of individual AST nodes.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/AST/TextNodeDumper.h"
14 #include "clang/AST/APValue.h"
15 #include "clang/AST/DeclFriend.h"
16 #include "clang/AST/DeclOpenMP.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/LocInfoType.h"
19 #include "clang/AST/Type.h"
20 #include "clang/Basic/Module.h"
21 #include "clang/Basic/SourceManager.h"
22 #include "clang/Basic/Specifiers.h"
23 #include "clang/Basic/TypeTraits.h"
24 
25 #include <algorithm>
26 #include <utility>
27 
28 using namespace clang;
29 
30 static void dumpPreviousDeclImpl(raw_ostream &OS, ...) {}
31 
32 template <typename T>
33 static void dumpPreviousDeclImpl(raw_ostream &OS, const Mergeable<T> *D) {
34   const T *First = D->getFirstDecl();
35   if (First != D)
36     OS << " first " << First;
37 }
38 
39 template <typename T>
40 static void dumpPreviousDeclImpl(raw_ostream &OS, const Redeclarable<T> *D) {
41   const T *Prev = D->getPreviousDecl();
42   if (Prev)
43     OS << " prev " << Prev;
44 }
45 
46 /// Dump the previous declaration in the redeclaration chain for a declaration,
47 /// if any.
48 static void dumpPreviousDecl(raw_ostream &OS, const Decl *D) {
49   switch (D->getKind()) {
50 #define DECL(DERIVED, BASE)                                                    \
51   case Decl::DERIVED:                                                          \
52     return dumpPreviousDeclImpl(OS, cast<DERIVED##Decl>(D));
53 #define ABSTRACT_DECL(DECL)
54 #include "clang/AST/DeclNodes.inc"
55   }
56   llvm_unreachable("Decl that isn't part of DeclNodes.inc!");
57 }
58 
59 TextNodeDumper::TextNodeDumper(raw_ostream &OS, const ASTContext &Context,
60                                bool ShowColors)
61     : TextTreeStructure(OS, ShowColors), OS(OS), ShowColors(ShowColors),
62       Context(&Context), SM(&Context.getSourceManager()),
63       PrintPolicy(Context.getPrintingPolicy()),
64       Traits(&Context.getCommentCommandTraits()) {}
65 
66 TextNodeDumper::TextNodeDumper(raw_ostream &OS, bool ShowColors)
67     : TextTreeStructure(OS, ShowColors), OS(OS), ShowColors(ShowColors) {}
68 
69 void TextNodeDumper::Visit(const comments::Comment *C,
70                            const comments::FullComment *FC) {
71   if (!C) {
72     ColorScope Color(OS, ShowColors, NullColor);
73     OS << "<<<NULL>>>";
74     return;
75   }
76 
77   {
78     ColorScope Color(OS, ShowColors, CommentColor);
79     OS << C->getCommentKindName();
80   }
81   dumpPointer(C);
82   dumpSourceRange(C->getSourceRange());
83 
84   ConstCommentVisitor<TextNodeDumper, void,
85                       const comments::FullComment *>::visit(C, FC);
86 }
87 
88 void TextNodeDumper::Visit(const Attr *A) {
89   {
90     ColorScope Color(OS, ShowColors, AttrColor);
91 
92     switch (A->getKind()) {
93 #define ATTR(X)                                                                \
94   case attr::X:                                                                \
95     OS << #X;                                                                  \
96     break;
97 #include "clang/Basic/AttrList.inc"
98     }
99     OS << "Attr";
100   }
101   dumpPointer(A);
102   dumpSourceRange(A->getRange());
103   if (A->isInherited())
104     OS << " Inherited";
105   if (A->isImplicit())
106     OS << " Implicit";
107 
108   ConstAttrVisitor<TextNodeDumper>::Visit(A);
109 }
110 
111 void TextNodeDumper::Visit(const TemplateArgument &TA, SourceRange R,
112                            const Decl *From, StringRef Label) {
113   OS << "TemplateArgument";
114   if (R.isValid())
115     dumpSourceRange(R);
116 
117   if (From)
118     dumpDeclRef(From, Label);
119 
120   ConstTemplateArgumentVisitor<TextNodeDumper>::Visit(TA);
121 }
122 
123 void TextNodeDumper::Visit(const Stmt *Node) {
124   if (!Node) {
125     ColorScope Color(OS, ShowColors, NullColor);
126     OS << "<<<NULL>>>";
127     return;
128   }
129   {
130     ColorScope Color(OS, ShowColors, StmtColor);
131     OS << Node->getStmtClassName();
132   }
133   dumpPointer(Node);
134   dumpSourceRange(Node->getSourceRange());
135 
136   if (const auto *E = dyn_cast<Expr>(Node)) {
137     dumpType(E->getType());
138 
139     if (E->containsErrors()) {
140       ColorScope Color(OS, ShowColors, ErrorsColor);
141       OS << " contains-errors";
142     }
143 
144     {
145       ColorScope Color(OS, ShowColors, ValueKindColor);
146       switch (E->getValueKind()) {
147       case VK_RValue:
148         break;
149       case VK_LValue:
150         OS << " lvalue";
151         break;
152       case VK_XValue:
153         OS << " xvalue";
154         break;
155       }
156     }
157 
158     {
159       ColorScope Color(OS, ShowColors, ObjectKindColor);
160       switch (E->getObjectKind()) {
161       case OK_Ordinary:
162         break;
163       case OK_BitField:
164         OS << " bitfield";
165         break;
166       case OK_ObjCProperty:
167         OS << " objcproperty";
168         break;
169       case OK_ObjCSubscript:
170         OS << " objcsubscript";
171         break;
172       case OK_VectorComponent:
173         OS << " vectorcomponent";
174         break;
175       case OK_MatrixComponent:
176         OS << " matrixcomponent";
177         break;
178       }
179     }
180   }
181 
182   ConstStmtVisitor<TextNodeDumper>::Visit(Node);
183 }
184 
185 void TextNodeDumper::Visit(const Type *T) {
186   if (!T) {
187     ColorScope Color(OS, ShowColors, NullColor);
188     OS << "<<<NULL>>>";
189     return;
190   }
191   if (isa<LocInfoType>(T)) {
192     {
193       ColorScope Color(OS, ShowColors, TypeColor);
194       OS << "LocInfo Type";
195     }
196     dumpPointer(T);
197     return;
198   }
199 
200   {
201     ColorScope Color(OS, ShowColors, TypeColor);
202     OS << T->getTypeClassName() << "Type";
203   }
204   dumpPointer(T);
205   OS << " ";
206   dumpBareType(QualType(T, 0), false);
207 
208   QualType SingleStepDesugar =
209       T->getLocallyUnqualifiedSingleStepDesugaredType();
210   if (SingleStepDesugar != QualType(T, 0))
211     OS << " sugar";
212 
213   if (T->containsErrors()) {
214     ColorScope Color(OS, ShowColors, ErrorsColor);
215     OS << " contains-errors";
216   }
217 
218   if (T->isDependentType())
219     OS << " dependent";
220   else if (T->isInstantiationDependentType())
221     OS << " instantiation_dependent";
222 
223   if (T->isVariablyModifiedType())
224     OS << " variably_modified";
225   if (T->containsUnexpandedParameterPack())
226     OS << " contains_unexpanded_pack";
227   if (T->isFromAST())
228     OS << " imported";
229 
230   TypeVisitor<TextNodeDumper>::Visit(T);
231 }
232 
233 void TextNodeDumper::Visit(QualType T) {
234   OS << "QualType";
235   dumpPointer(T.getAsOpaquePtr());
236   OS << " ";
237   dumpBareType(T, false);
238   OS << " " << T.split().Quals.getAsString();
239 }
240 
241 void TextNodeDumper::Visit(const Decl *D) {
242   if (!D) {
243     ColorScope Color(OS, ShowColors, NullColor);
244     OS << "<<<NULL>>>";
245     return;
246   }
247 
248   {
249     ColorScope Color(OS, ShowColors, DeclKindNameColor);
250     OS << D->getDeclKindName() << "Decl";
251   }
252   dumpPointer(D);
253   if (D->getLexicalDeclContext() != D->getDeclContext())
254     OS << " parent " << cast<Decl>(D->getDeclContext());
255   dumpPreviousDecl(OS, D);
256   dumpSourceRange(D->getSourceRange());
257   OS << ' ';
258   dumpLocation(D->getLocation());
259   if (D->isFromASTFile())
260     OS << " imported";
261   if (Module *M = D->getOwningModule())
262     OS << " in " << M->getFullModuleName();
263   if (auto *ND = dyn_cast<NamedDecl>(D))
264     for (Module *M : D->getASTContext().getModulesWithMergedDefinition(
265              const_cast<NamedDecl *>(ND)))
266       AddChild([=] { OS << "also in " << M->getFullModuleName(); });
267   if (const NamedDecl *ND = dyn_cast<NamedDecl>(D))
268     if (!ND->isUnconditionallyVisible())
269       OS << " hidden";
270   if (D->isImplicit())
271     OS << " implicit";
272 
273   if (D->isUsed())
274     OS << " used";
275   else if (D->isThisDeclarationReferenced())
276     OS << " referenced";
277 
278   if (D->isInvalidDecl())
279     OS << " invalid";
280   if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
281     if (FD->isConstexprSpecified())
282       OS << " constexpr";
283     if (FD->isConsteval())
284       OS << " consteval";
285   }
286 
287   if (!isa<FunctionDecl>(*D)) {
288     const auto *MD = dyn_cast<ObjCMethodDecl>(D);
289     if (!MD || !MD->isThisDeclarationADefinition()) {
290       const auto *DC = dyn_cast<DeclContext>(D);
291       if (DC && DC->hasExternalLexicalStorage()) {
292         ColorScope Color(OS, ShowColors, UndeserializedColor);
293         OS << " <undeserialized declarations>";
294       }
295     }
296   }
297 
298   ConstDeclVisitor<TextNodeDumper>::Visit(D);
299 }
300 
301 void TextNodeDumper::Visit(const CXXCtorInitializer *Init) {
302   OS << "CXXCtorInitializer";
303   if (Init->isAnyMemberInitializer()) {
304     OS << ' ';
305     dumpBareDeclRef(Init->getAnyMember());
306   } else if (Init->isBaseInitializer()) {
307     dumpType(QualType(Init->getBaseClass(), 0));
308   } else if (Init->isDelegatingInitializer()) {
309     dumpType(Init->getTypeSourceInfo()->getType());
310   } else {
311     llvm_unreachable("Unknown initializer type");
312   }
313 }
314 
315 void TextNodeDumper::Visit(const BlockDecl::Capture &C) {
316   OS << "capture";
317   if (C.isByRef())
318     OS << " byref";
319   if (C.isNested())
320     OS << " nested";
321   if (C.getVariable()) {
322     OS << ' ';
323     dumpBareDeclRef(C.getVariable());
324   }
325 }
326 
327 void TextNodeDumper::Visit(const OMPClause *C) {
328   if (!C) {
329     ColorScope Color(OS, ShowColors, NullColor);
330     OS << "<<<NULL>>> OMPClause";
331     return;
332   }
333   {
334     ColorScope Color(OS, ShowColors, AttrColor);
335     StringRef ClauseName(llvm::omp::getOpenMPClauseName(C->getClauseKind()));
336     OS << "OMP" << ClauseName.substr(/*Start=*/0, /*N=*/1).upper()
337        << ClauseName.drop_front() << "Clause";
338   }
339   dumpPointer(C);
340   dumpSourceRange(SourceRange(C->getBeginLoc(), C->getEndLoc()));
341   if (C->isImplicit())
342     OS << " <implicit>";
343 }
344 
345 void TextNodeDumper::Visit(const GenericSelectionExpr::ConstAssociation &A) {
346   const TypeSourceInfo *TSI = A.getTypeSourceInfo();
347   if (TSI) {
348     OS << "case ";
349     dumpType(TSI->getType());
350   } else {
351     OS << "default";
352   }
353 
354   if (A.isSelected())
355     OS << " selected";
356 }
357 
358 static double GetApproxValue(const llvm::APFloat &F) {
359   llvm::APFloat V = F;
360   bool ignored;
361   V.convert(llvm::APFloat::IEEEdouble(), llvm::APFloat::rmNearestTiesToEven,
362             &ignored);
363   return V.convertToDouble();
364 }
365 
366 /// True if the \p APValue \p Value can be folded onto the current line.
367 static bool isSimpleAPValue(const APValue &Value) {
368   switch (Value.getKind()) {
369   case APValue::None:
370   case APValue::Indeterminate:
371   case APValue::Int:
372   case APValue::Float:
373   case APValue::FixedPoint:
374   case APValue::ComplexInt:
375   case APValue::ComplexFloat:
376   case APValue::LValue:
377   case APValue::MemberPointer:
378   case APValue::AddrLabelDiff:
379     return true;
380   case APValue::Vector:
381   case APValue::Array:
382   case APValue::Struct:
383     return false;
384   case APValue::Union:
385     return isSimpleAPValue(Value.getUnionValue());
386   }
387   llvm_unreachable("unexpected APValue kind!");
388 }
389 
390 /// Dump the children of the \p APValue \p Value.
391 ///
392 /// \param[in] Value          The \p APValue to visit
393 /// \param[in] Ty             The \p QualType passed to \p Visit
394 ///
395 /// \param[in] IdxToChildFun  A function mapping an \p APValue and an index
396 ///                           to one of the child of the \p APValue
397 ///
398 /// \param[in] NumChildren    \p IdxToChildFun will be called on \p Value with
399 ///                           the indices in the range \p [0,NumChildren(
400 ///
401 /// \param[in] LabelSingular  The label to use on a line with a single child
402 /// \param[in] LabelPlurial   The label to use on a line with multiple children
403 void TextNodeDumper::dumpAPValueChildren(
404     const APValue &Value, QualType Ty,
405     const APValue &(*IdxToChildFun)(const APValue &, unsigned),
406     unsigned NumChildren, StringRef LabelSingular, StringRef LabelPlurial) {
407   // To save some vertical space we print up to MaxChildrenPerLine APValues
408   // considered to be simple (by isSimpleAPValue) on a single line.
409   constexpr unsigned MaxChildrenPerLine = 4;
410   unsigned I = 0;
411   while (I < NumChildren) {
412     unsigned J = I;
413     while (J < NumChildren) {
414       if (isSimpleAPValue(IdxToChildFun(Value, J)) &&
415           (J - I < MaxChildrenPerLine)) {
416         ++J;
417         continue;
418       }
419       break;
420     }
421 
422     J = std::max(I + 1, J);
423 
424     // Print [I,J) on a single line.
425     AddChild(J - I > 1 ? LabelPlurial : LabelSingular, [=]() {
426       for (unsigned X = I; X < J; ++X) {
427         Visit(IdxToChildFun(Value, X), Ty);
428         if (X + 1 != J)
429           OS << ", ";
430       }
431     });
432     I = J;
433   }
434 }
435 
436 void TextNodeDumper::Visit(const APValue &Value, QualType Ty) {
437   ColorScope Color(OS, ShowColors, ValueKindColor);
438   switch (Value.getKind()) {
439   case APValue::None:
440     OS << "None";
441     return;
442   case APValue::Indeterminate:
443     OS << "Indeterminate";
444     return;
445   case APValue::Int:
446     OS << "Int ";
447     {
448       ColorScope Color(OS, ShowColors, ValueColor);
449       OS << Value.getInt();
450     }
451     return;
452   case APValue::Float:
453     OS << "Float ";
454     {
455       ColorScope Color(OS, ShowColors, ValueColor);
456       OS << GetApproxValue(Value.getFloat());
457     }
458     return;
459   case APValue::FixedPoint:
460     OS << "FixedPoint ";
461     {
462       ColorScope Color(OS, ShowColors, ValueColor);
463       OS << Value.getFixedPoint();
464     }
465     return;
466   case APValue::Vector: {
467     unsigned VectorLength = Value.getVectorLength();
468     OS << "Vector length=" << VectorLength;
469 
470     dumpAPValueChildren(
471         Value, Ty,
472         [](const APValue &Value, unsigned Index) -> const APValue & {
473           return Value.getVectorElt(Index);
474         },
475         VectorLength, "element", "elements");
476     return;
477   }
478   case APValue::ComplexInt:
479     OS << "ComplexInt ";
480     {
481       ColorScope Color(OS, ShowColors, ValueColor);
482       OS << Value.getComplexIntReal() << " + " << Value.getComplexIntImag()
483          << 'i';
484     }
485     return;
486   case APValue::ComplexFloat:
487     OS << "ComplexFloat ";
488     {
489       ColorScope Color(OS, ShowColors, ValueColor);
490       OS << GetApproxValue(Value.getComplexFloatReal()) << " + "
491          << GetApproxValue(Value.getComplexFloatImag()) << 'i';
492     }
493     return;
494   case APValue::LValue:
495     (void)Context;
496     OS << "LValue <todo>";
497     return;
498   case APValue::Array: {
499     unsigned ArraySize = Value.getArraySize();
500     unsigned NumInitializedElements = Value.getArrayInitializedElts();
501     OS << "Array size=" << ArraySize;
502 
503     dumpAPValueChildren(
504         Value, Ty,
505         [](const APValue &Value, unsigned Index) -> const APValue & {
506           return Value.getArrayInitializedElt(Index);
507         },
508         NumInitializedElements, "element", "elements");
509 
510     if (Value.hasArrayFiller()) {
511       AddChild("filler", [=] {
512         {
513           ColorScope Color(OS, ShowColors, ValueColor);
514           OS << ArraySize - NumInitializedElements << " x ";
515         }
516         Visit(Value.getArrayFiller(), Ty);
517       });
518     }
519 
520     return;
521   }
522   case APValue::Struct: {
523     OS << "Struct";
524 
525     dumpAPValueChildren(
526         Value, Ty,
527         [](const APValue &Value, unsigned Index) -> const APValue & {
528           return Value.getStructBase(Index);
529         },
530         Value.getStructNumBases(), "base", "bases");
531 
532     dumpAPValueChildren(
533         Value, Ty,
534         [](const APValue &Value, unsigned Index) -> const APValue & {
535           return Value.getStructField(Index);
536         },
537         Value.getStructNumFields(), "field", "fields");
538 
539     return;
540   }
541   case APValue::Union: {
542     OS << "Union";
543     {
544       ColorScope Color(OS, ShowColors, ValueColor);
545       if (const FieldDecl *FD = Value.getUnionField())
546         OS << " ." << *cast<NamedDecl>(FD);
547     }
548     // If the union value is considered to be simple, fold it into the
549     // current line to save some vertical space.
550     const APValue &UnionValue = Value.getUnionValue();
551     if (isSimpleAPValue(UnionValue)) {
552       OS << ' ';
553       Visit(UnionValue, Ty);
554     } else {
555       AddChild([=] { Visit(UnionValue, Ty); });
556     }
557 
558     return;
559   }
560   case APValue::MemberPointer:
561     OS << "MemberPointer <todo>";
562     return;
563   case APValue::AddrLabelDiff:
564     OS << "AddrLabelDiff <todo>";
565     return;
566   }
567   llvm_unreachable("Unknown APValue kind!");
568 }
569 
570 void TextNodeDumper::dumpPointer(const void *Ptr) {
571   ColorScope Color(OS, ShowColors, AddressColor);
572   OS << ' ' << Ptr;
573 }
574 
575 void TextNodeDumper::dumpLocation(SourceLocation Loc) {
576   if (!SM)
577     return;
578 
579   ColorScope Color(OS, ShowColors, LocationColor);
580   SourceLocation SpellingLoc = SM->getSpellingLoc(Loc);
581 
582   // The general format we print out is filename:line:col, but we drop pieces
583   // that haven't changed since the last loc printed.
584   PresumedLoc PLoc = SM->getPresumedLoc(SpellingLoc);
585 
586   if (PLoc.isInvalid()) {
587     OS << "<invalid sloc>";
588     return;
589   }
590 
591   if (strcmp(PLoc.getFilename(), LastLocFilename) != 0) {
592     OS << PLoc.getFilename() << ':' << PLoc.getLine() << ':'
593        << PLoc.getColumn();
594     LastLocFilename = PLoc.getFilename();
595     LastLocLine = PLoc.getLine();
596   } else if (PLoc.getLine() != LastLocLine) {
597     OS << "line" << ':' << PLoc.getLine() << ':' << PLoc.getColumn();
598     LastLocLine = PLoc.getLine();
599   } else {
600     OS << "col" << ':' << PLoc.getColumn();
601   }
602 }
603 
604 void TextNodeDumper::dumpSourceRange(SourceRange R) {
605   // Can't translate locations if a SourceManager isn't available.
606   if (!SM)
607     return;
608 
609   OS << " <";
610   dumpLocation(R.getBegin());
611   if (R.getBegin() != R.getEnd()) {
612     OS << ", ";
613     dumpLocation(R.getEnd());
614   }
615   OS << ">";
616 
617   // <t2.c:123:421[blah], t2.c:412:321>
618 }
619 
620 void TextNodeDumper::dumpBareType(QualType T, bool Desugar) {
621   ColorScope Color(OS, ShowColors, TypeColor);
622 
623   SplitQualType T_split = T.split();
624   OS << "'" << QualType::getAsString(T_split, PrintPolicy) << "'";
625 
626   if (Desugar && !T.isNull()) {
627     // If the type is sugared, also dump a (shallow) desugared type.
628     SplitQualType D_split = T.getSplitDesugaredType();
629     if (T_split != D_split)
630       OS << ":'" << QualType::getAsString(D_split, PrintPolicy) << "'";
631   }
632 }
633 
634 void TextNodeDumper::dumpType(QualType T) {
635   OS << ' ';
636   dumpBareType(T);
637 }
638 
639 void TextNodeDumper::dumpBareDeclRef(const Decl *D) {
640   if (!D) {
641     ColorScope Color(OS, ShowColors, NullColor);
642     OS << "<<<NULL>>>";
643     return;
644   }
645 
646   {
647     ColorScope Color(OS, ShowColors, DeclKindNameColor);
648     OS << D->getDeclKindName();
649   }
650   dumpPointer(D);
651 
652   if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
653     ColorScope Color(OS, ShowColors, DeclNameColor);
654     OS << " '" << ND->getDeclName() << '\'';
655   }
656 
657   if (const ValueDecl *VD = dyn_cast<ValueDecl>(D))
658     dumpType(VD->getType());
659 }
660 
661 void TextNodeDumper::dumpName(const NamedDecl *ND) {
662   if (ND->getDeclName()) {
663     ColorScope Color(OS, ShowColors, DeclNameColor);
664     OS << ' ' << ND->getNameAsString();
665   }
666 }
667 
668 void TextNodeDumper::dumpAccessSpecifier(AccessSpecifier AS) {
669   const auto AccessSpelling = getAccessSpelling(AS);
670   if (AccessSpelling.empty())
671     return;
672   OS << AccessSpelling;
673 }
674 
675 void TextNodeDumper::dumpCleanupObject(
676     const ExprWithCleanups::CleanupObject &C) {
677   if (auto *BD = C.dyn_cast<BlockDecl *>())
678     dumpDeclRef(BD, "cleanup");
679   else if (auto *CLE = C.dyn_cast<CompoundLiteralExpr *>())
680     AddChild([=] {
681       OS << "cleanup ";
682       {
683         ColorScope Color(OS, ShowColors, StmtColor);
684         OS << CLE->getStmtClassName();
685       }
686       dumpPointer(CLE);
687     });
688   else
689     llvm_unreachable("unexpected cleanup type");
690 }
691 
692 void TextNodeDumper::dumpDeclRef(const Decl *D, StringRef Label) {
693   if (!D)
694     return;
695 
696   AddChild([=] {
697     if (!Label.empty())
698       OS << Label << ' ';
699     dumpBareDeclRef(D);
700   });
701 }
702 
703 const char *TextNodeDumper::getCommandName(unsigned CommandID) {
704   if (Traits)
705     return Traits->getCommandInfo(CommandID)->Name;
706   const comments::CommandInfo *Info =
707       comments::CommandTraits::getBuiltinCommandInfo(CommandID);
708   if (Info)
709     return Info->Name;
710   return "<not a builtin command>";
711 }
712 
713 void TextNodeDumper::visitTextComment(const comments::TextComment *C,
714                                       const comments::FullComment *) {
715   OS << " Text=\"" << C->getText() << "\"";
716 }
717 
718 void TextNodeDumper::visitInlineCommandComment(
719     const comments::InlineCommandComment *C, const comments::FullComment *) {
720   OS << " Name=\"" << getCommandName(C->getCommandID()) << "\"";
721   switch (C->getRenderKind()) {
722   case comments::InlineCommandComment::RenderNormal:
723     OS << " RenderNormal";
724     break;
725   case comments::InlineCommandComment::RenderBold:
726     OS << " RenderBold";
727     break;
728   case comments::InlineCommandComment::RenderMonospaced:
729     OS << " RenderMonospaced";
730     break;
731   case comments::InlineCommandComment::RenderEmphasized:
732     OS << " RenderEmphasized";
733     break;
734   case comments::InlineCommandComment::RenderAnchor:
735     OS << " RenderAnchor";
736     break;
737   }
738 
739   for (unsigned i = 0, e = C->getNumArgs(); i != e; ++i)
740     OS << " Arg[" << i << "]=\"" << C->getArgText(i) << "\"";
741 }
742 
743 void TextNodeDumper::visitHTMLStartTagComment(
744     const comments::HTMLStartTagComment *C, const comments::FullComment *) {
745   OS << " Name=\"" << C->getTagName() << "\"";
746   if (C->getNumAttrs() != 0) {
747     OS << " Attrs: ";
748     for (unsigned i = 0, e = C->getNumAttrs(); i != e; ++i) {
749       const comments::HTMLStartTagComment::Attribute &Attr = C->getAttr(i);
750       OS << " \"" << Attr.Name << "=\"" << Attr.Value << "\"";
751     }
752   }
753   if (C->isSelfClosing())
754     OS << " SelfClosing";
755 }
756 
757 void TextNodeDumper::visitHTMLEndTagComment(
758     const comments::HTMLEndTagComment *C, const comments::FullComment *) {
759   OS << " Name=\"" << C->getTagName() << "\"";
760 }
761 
762 void TextNodeDumper::visitBlockCommandComment(
763     const comments::BlockCommandComment *C, const comments::FullComment *) {
764   OS << " Name=\"" << getCommandName(C->getCommandID()) << "\"";
765   for (unsigned i = 0, e = C->getNumArgs(); i != e; ++i)
766     OS << " Arg[" << i << "]=\"" << C->getArgText(i) << "\"";
767 }
768 
769 void TextNodeDumper::visitParamCommandComment(
770     const comments::ParamCommandComment *C, const comments::FullComment *FC) {
771   OS << " "
772      << comments::ParamCommandComment::getDirectionAsString(C->getDirection());
773 
774   if (C->isDirectionExplicit())
775     OS << " explicitly";
776   else
777     OS << " implicitly";
778 
779   if (C->hasParamName()) {
780     if (C->isParamIndexValid())
781       OS << " Param=\"" << C->getParamName(FC) << "\"";
782     else
783       OS << " Param=\"" << C->getParamNameAsWritten() << "\"";
784   }
785 
786   if (C->isParamIndexValid() && !C->isVarArgParam())
787     OS << " ParamIndex=" << C->getParamIndex();
788 }
789 
790 void TextNodeDumper::visitTParamCommandComment(
791     const comments::TParamCommandComment *C, const comments::FullComment *FC) {
792   if (C->hasParamName()) {
793     if (C->isPositionValid())
794       OS << " Param=\"" << C->getParamName(FC) << "\"";
795     else
796       OS << " Param=\"" << C->getParamNameAsWritten() << "\"";
797   }
798 
799   if (C->isPositionValid()) {
800     OS << " Position=<";
801     for (unsigned i = 0, e = C->getDepth(); i != e; ++i) {
802       OS << C->getIndex(i);
803       if (i != e - 1)
804         OS << ", ";
805     }
806     OS << ">";
807   }
808 }
809 
810 void TextNodeDumper::visitVerbatimBlockComment(
811     const comments::VerbatimBlockComment *C, const comments::FullComment *) {
812   OS << " Name=\"" << getCommandName(C->getCommandID())
813      << "\""
814         " CloseName=\""
815      << C->getCloseName() << "\"";
816 }
817 
818 void TextNodeDumper::visitVerbatimBlockLineComment(
819     const comments::VerbatimBlockLineComment *C,
820     const comments::FullComment *) {
821   OS << " Text=\"" << C->getText() << "\"";
822 }
823 
824 void TextNodeDumper::visitVerbatimLineComment(
825     const comments::VerbatimLineComment *C, const comments::FullComment *) {
826   OS << " Text=\"" << C->getText() << "\"";
827 }
828 
829 void TextNodeDumper::VisitNullTemplateArgument(const TemplateArgument &) {
830   OS << " null";
831 }
832 
833 void TextNodeDumper::VisitTypeTemplateArgument(const TemplateArgument &TA) {
834   OS << " type";
835   dumpType(TA.getAsType());
836 }
837 
838 void TextNodeDumper::VisitDeclarationTemplateArgument(
839     const TemplateArgument &TA) {
840   OS << " decl";
841   dumpDeclRef(TA.getAsDecl());
842 }
843 
844 void TextNodeDumper::VisitNullPtrTemplateArgument(const TemplateArgument &) {
845   OS << " nullptr";
846 }
847 
848 void TextNodeDumper::VisitIntegralTemplateArgument(const TemplateArgument &TA) {
849   OS << " integral " << TA.getAsIntegral();
850 }
851 
852 void TextNodeDumper::VisitTemplateTemplateArgument(const TemplateArgument &TA) {
853   OS << " template ";
854   TA.getAsTemplate().dump(OS);
855 }
856 
857 void TextNodeDumper::VisitTemplateExpansionTemplateArgument(
858     const TemplateArgument &TA) {
859   OS << " template expansion ";
860   TA.getAsTemplateOrTemplatePattern().dump(OS);
861 }
862 
863 void TextNodeDumper::VisitExpressionTemplateArgument(const TemplateArgument &) {
864   OS << " expr";
865 }
866 
867 void TextNodeDumper::VisitPackTemplateArgument(const TemplateArgument &) {
868   OS << " pack";
869 }
870 
871 static void dumpBasePath(raw_ostream &OS, const CastExpr *Node) {
872   if (Node->path_empty())
873     return;
874 
875   OS << " (";
876   bool First = true;
877   for (CastExpr::path_const_iterator I = Node->path_begin(),
878                                      E = Node->path_end();
879        I != E; ++I) {
880     const CXXBaseSpecifier *Base = *I;
881     if (!First)
882       OS << " -> ";
883 
884     const auto *RD =
885         cast<CXXRecordDecl>(Base->getType()->castAs<RecordType>()->getDecl());
886 
887     if (Base->isVirtual())
888       OS << "virtual ";
889     OS << RD->getName();
890     First = false;
891   }
892 
893   OS << ')';
894 }
895 
896 void TextNodeDumper::VisitIfStmt(const IfStmt *Node) {
897   if (Node->hasInitStorage())
898     OS << " has_init";
899   if (Node->hasVarStorage())
900     OS << " has_var";
901   if (Node->hasElseStorage())
902     OS << " has_else";
903 }
904 
905 void TextNodeDumper::VisitSwitchStmt(const SwitchStmt *Node) {
906   if (Node->hasInitStorage())
907     OS << " has_init";
908   if (Node->hasVarStorage())
909     OS << " has_var";
910 }
911 
912 void TextNodeDumper::VisitWhileStmt(const WhileStmt *Node) {
913   if (Node->hasVarStorage())
914     OS << " has_var";
915 }
916 
917 void TextNodeDumper::VisitLabelStmt(const LabelStmt *Node) {
918   OS << " '" << Node->getName() << "'";
919 }
920 
921 void TextNodeDumper::VisitGotoStmt(const GotoStmt *Node) {
922   OS << " '" << Node->getLabel()->getName() << "'";
923   dumpPointer(Node->getLabel());
924 }
925 
926 void TextNodeDumper::VisitCaseStmt(const CaseStmt *Node) {
927   if (Node->caseStmtIsGNURange())
928     OS << " gnu_range";
929 }
930 
931 void TextNodeDumper::VisitConstantExpr(const ConstantExpr *Node) {
932   if (Node->hasAPValueResult())
933     AddChild("value",
934              [=] { Visit(Node->getAPValueResult(), Node->getType()); });
935 }
936 
937 void TextNodeDumper::VisitCallExpr(const CallExpr *Node) {
938   if (Node->usesADL())
939     OS << " adl";
940 }
941 
942 void TextNodeDumper::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *Node) {
943   const char *OperatorSpelling = clang::getOperatorSpelling(Node->getOperator());
944   if (OperatorSpelling)
945     OS << " '" << OperatorSpelling << "'";
946 
947   VisitCallExpr(Node);
948 }
949 
950 void TextNodeDumper::VisitCastExpr(const CastExpr *Node) {
951   OS << " <";
952   {
953     ColorScope Color(OS, ShowColors, CastColor);
954     OS << Node->getCastKindName();
955   }
956   dumpBasePath(OS, Node);
957   OS << ">";
958 }
959 
960 void TextNodeDumper::VisitImplicitCastExpr(const ImplicitCastExpr *Node) {
961   VisitCastExpr(Node);
962   if (Node->isPartOfExplicitCast())
963     OS << " part_of_explicit_cast";
964 }
965 
966 void TextNodeDumper::VisitDeclRefExpr(const DeclRefExpr *Node) {
967   OS << " ";
968   dumpBareDeclRef(Node->getDecl());
969   if (Node->getDecl() != Node->getFoundDecl()) {
970     OS << " (";
971     dumpBareDeclRef(Node->getFoundDecl());
972     OS << ")";
973   }
974   switch (Node->isNonOdrUse()) {
975   case NOUR_None: break;
976   case NOUR_Unevaluated: OS << " non_odr_use_unevaluated"; break;
977   case NOUR_Constant: OS << " non_odr_use_constant"; break;
978   case NOUR_Discarded: OS << " non_odr_use_discarded"; break;
979   }
980 }
981 
982 void TextNodeDumper::VisitUnresolvedLookupExpr(
983     const UnresolvedLookupExpr *Node) {
984   OS << " (";
985   if (!Node->requiresADL())
986     OS << "no ";
987   OS << "ADL) = '" << Node->getName() << '\'';
988 
989   UnresolvedLookupExpr::decls_iterator I = Node->decls_begin(),
990                                        E = Node->decls_end();
991   if (I == E)
992     OS << " empty";
993   for (; I != E; ++I)
994     dumpPointer(*I);
995 }
996 
997 void TextNodeDumper::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *Node) {
998   {
999     ColorScope Color(OS, ShowColors, DeclKindNameColor);
1000     OS << " " << Node->getDecl()->getDeclKindName() << "Decl";
1001   }
1002   OS << "='" << *Node->getDecl() << "'";
1003   dumpPointer(Node->getDecl());
1004   if (Node->isFreeIvar())
1005     OS << " isFreeIvar";
1006 }
1007 
1008 void TextNodeDumper::VisitPredefinedExpr(const PredefinedExpr *Node) {
1009   OS << " " << PredefinedExpr::getIdentKindName(Node->getIdentKind());
1010 }
1011 
1012 void TextNodeDumper::VisitCharacterLiteral(const CharacterLiteral *Node) {
1013   ColorScope Color(OS, ShowColors, ValueColor);
1014   OS << " " << Node->getValue();
1015 }
1016 
1017 void TextNodeDumper::VisitIntegerLiteral(const IntegerLiteral *Node) {
1018   bool isSigned = Node->getType()->isSignedIntegerType();
1019   ColorScope Color(OS, ShowColors, ValueColor);
1020   OS << " " << Node->getValue().toString(10, isSigned);
1021 }
1022 
1023 void TextNodeDumper::VisitFixedPointLiteral(const FixedPointLiteral *Node) {
1024   ColorScope Color(OS, ShowColors, ValueColor);
1025   OS << " " << Node->getValueAsString(/*Radix=*/10);
1026 }
1027 
1028 void TextNodeDumper::VisitFloatingLiteral(const FloatingLiteral *Node) {
1029   ColorScope Color(OS, ShowColors, ValueColor);
1030   OS << " " << Node->getValueAsApproximateDouble();
1031 }
1032 
1033 void TextNodeDumper::VisitStringLiteral(const StringLiteral *Str) {
1034   ColorScope Color(OS, ShowColors, ValueColor);
1035   OS << " ";
1036   Str->outputString(OS);
1037 }
1038 
1039 void TextNodeDumper::VisitInitListExpr(const InitListExpr *ILE) {
1040   if (auto *Field = ILE->getInitializedFieldInUnion()) {
1041     OS << " field ";
1042     dumpBareDeclRef(Field);
1043   }
1044 }
1045 
1046 void TextNodeDumper::VisitGenericSelectionExpr(const GenericSelectionExpr *E) {
1047   if (E->isResultDependent())
1048     OS << " result_dependent";
1049 }
1050 
1051 void TextNodeDumper::VisitUnaryOperator(const UnaryOperator *Node) {
1052   OS << " " << (Node->isPostfix() ? "postfix" : "prefix") << " '"
1053      << UnaryOperator::getOpcodeStr(Node->getOpcode()) << "'";
1054   if (!Node->canOverflow())
1055     OS << " cannot overflow";
1056 }
1057 
1058 void TextNodeDumper::VisitUnaryExprOrTypeTraitExpr(
1059     const UnaryExprOrTypeTraitExpr *Node) {
1060   OS << " " << getTraitSpelling(Node->getKind());
1061 
1062   if (Node->isArgumentType())
1063     dumpType(Node->getArgumentType());
1064 }
1065 
1066 void TextNodeDumper::VisitMemberExpr(const MemberExpr *Node) {
1067   OS << " " << (Node->isArrow() ? "->" : ".") << *Node->getMemberDecl();
1068   dumpPointer(Node->getMemberDecl());
1069   switch (Node->isNonOdrUse()) {
1070   case NOUR_None: break;
1071   case NOUR_Unevaluated: OS << " non_odr_use_unevaluated"; break;
1072   case NOUR_Constant: OS << " non_odr_use_constant"; break;
1073   case NOUR_Discarded: OS << " non_odr_use_discarded"; break;
1074   }
1075 }
1076 
1077 void TextNodeDumper::VisitExtVectorElementExpr(
1078     const ExtVectorElementExpr *Node) {
1079   OS << " " << Node->getAccessor().getNameStart();
1080 }
1081 
1082 void TextNodeDumper::VisitBinaryOperator(const BinaryOperator *Node) {
1083   OS << " '" << BinaryOperator::getOpcodeStr(Node->getOpcode()) << "'";
1084 }
1085 
1086 void TextNodeDumper::VisitCompoundAssignOperator(
1087     const CompoundAssignOperator *Node) {
1088   OS << " '" << BinaryOperator::getOpcodeStr(Node->getOpcode())
1089      << "' ComputeLHSTy=";
1090   dumpBareType(Node->getComputationLHSType());
1091   OS << " ComputeResultTy=";
1092   dumpBareType(Node->getComputationResultType());
1093 }
1094 
1095 void TextNodeDumper::VisitAddrLabelExpr(const AddrLabelExpr *Node) {
1096   OS << " " << Node->getLabel()->getName();
1097   dumpPointer(Node->getLabel());
1098 }
1099 
1100 void TextNodeDumper::VisitCXXNamedCastExpr(const CXXNamedCastExpr *Node) {
1101   OS << " " << Node->getCastName() << "<"
1102      << Node->getTypeAsWritten().getAsString() << ">"
1103      << " <" << Node->getCastKindName();
1104   dumpBasePath(OS, Node);
1105   OS << ">";
1106 }
1107 
1108 void TextNodeDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *Node) {
1109   OS << " " << (Node->getValue() ? "true" : "false");
1110 }
1111 
1112 void TextNodeDumper::VisitCXXThisExpr(const CXXThisExpr *Node) {
1113   if (Node->isImplicit())
1114     OS << " implicit";
1115   OS << " this";
1116 }
1117 
1118 void TextNodeDumper::VisitCXXFunctionalCastExpr(
1119     const CXXFunctionalCastExpr *Node) {
1120   OS << " functional cast to " << Node->getTypeAsWritten().getAsString() << " <"
1121      << Node->getCastKindName() << ">";
1122 }
1123 
1124 void TextNodeDumper::VisitCXXUnresolvedConstructExpr(
1125     const CXXUnresolvedConstructExpr *Node) {
1126   dumpType(Node->getTypeAsWritten());
1127   if (Node->isListInitialization())
1128     OS << " list";
1129 }
1130 
1131 void TextNodeDumper::VisitCXXConstructExpr(const CXXConstructExpr *Node) {
1132   CXXConstructorDecl *Ctor = Node->getConstructor();
1133   dumpType(Ctor->getType());
1134   if (Node->isElidable())
1135     OS << " elidable";
1136   if (Node->isListInitialization())
1137     OS << " list";
1138   if (Node->isStdInitListInitialization())
1139     OS << " std::initializer_list";
1140   if (Node->requiresZeroInitialization())
1141     OS << " zeroing";
1142 }
1143 
1144 void TextNodeDumper::VisitCXXBindTemporaryExpr(
1145     const CXXBindTemporaryExpr *Node) {
1146   OS << " (CXXTemporary";
1147   dumpPointer(Node);
1148   OS << ")";
1149 }
1150 
1151 void TextNodeDumper::VisitCXXNewExpr(const CXXNewExpr *Node) {
1152   if (Node->isGlobalNew())
1153     OS << " global";
1154   if (Node->isArray())
1155     OS << " array";
1156   if (Node->getOperatorNew()) {
1157     OS << ' ';
1158     dumpBareDeclRef(Node->getOperatorNew());
1159   }
1160   // We could dump the deallocation function used in case of error, but it's
1161   // usually not that interesting.
1162 }
1163 
1164 void TextNodeDumper::VisitCXXDeleteExpr(const CXXDeleteExpr *Node) {
1165   if (Node->isGlobalDelete())
1166     OS << " global";
1167   if (Node->isArrayForm())
1168     OS << " array";
1169   if (Node->getOperatorDelete()) {
1170     OS << ' ';
1171     dumpBareDeclRef(Node->getOperatorDelete());
1172   }
1173 }
1174 
1175 void TextNodeDumper::VisitTypeTraitExpr(const TypeTraitExpr *Node) {
1176   OS << " " << getTraitSpelling(Node->getTrait());
1177 }
1178 
1179 void TextNodeDumper::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *Node) {
1180   OS << " " << getTraitSpelling(Node->getTrait());
1181 }
1182 
1183 void TextNodeDumper::VisitExpressionTraitExpr(const ExpressionTraitExpr *Node) {
1184   OS << " " << getTraitSpelling(Node->getTrait());
1185 }
1186 
1187 void TextNodeDumper::VisitMaterializeTemporaryExpr(
1188     const MaterializeTemporaryExpr *Node) {
1189   if (const ValueDecl *VD = Node->getExtendingDecl()) {
1190     OS << " extended by ";
1191     dumpBareDeclRef(VD);
1192   }
1193 }
1194 
1195 void TextNodeDumper::VisitExprWithCleanups(const ExprWithCleanups *Node) {
1196   for (unsigned i = 0, e = Node->getNumObjects(); i != e; ++i)
1197     dumpCleanupObject(Node->getObject(i));
1198 }
1199 
1200 void TextNodeDumper::VisitSizeOfPackExpr(const SizeOfPackExpr *Node) {
1201   dumpPointer(Node->getPack());
1202   dumpName(Node->getPack());
1203 }
1204 
1205 void TextNodeDumper::VisitCXXDependentScopeMemberExpr(
1206     const CXXDependentScopeMemberExpr *Node) {
1207   OS << " " << (Node->isArrow() ? "->" : ".") << Node->getMember();
1208 }
1209 
1210 void TextNodeDumper::VisitObjCMessageExpr(const ObjCMessageExpr *Node) {
1211   OS << " selector=";
1212   Node->getSelector().print(OS);
1213   switch (Node->getReceiverKind()) {
1214   case ObjCMessageExpr::Instance:
1215     break;
1216 
1217   case ObjCMessageExpr::Class:
1218     OS << " class=";
1219     dumpBareType(Node->getClassReceiver());
1220     break;
1221 
1222   case ObjCMessageExpr::SuperInstance:
1223     OS << " super (instance)";
1224     break;
1225 
1226   case ObjCMessageExpr::SuperClass:
1227     OS << " super (class)";
1228     break;
1229   }
1230 }
1231 
1232 void TextNodeDumper::VisitObjCBoxedExpr(const ObjCBoxedExpr *Node) {
1233   if (auto *BoxingMethod = Node->getBoxingMethod()) {
1234     OS << " selector=";
1235     BoxingMethod->getSelector().print(OS);
1236   }
1237 }
1238 
1239 void TextNodeDumper::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *Node) {
1240   if (!Node->getCatchParamDecl())
1241     OS << " catch all";
1242 }
1243 
1244 void TextNodeDumper::VisitObjCEncodeExpr(const ObjCEncodeExpr *Node) {
1245   dumpType(Node->getEncodedType());
1246 }
1247 
1248 void TextNodeDumper::VisitObjCSelectorExpr(const ObjCSelectorExpr *Node) {
1249   OS << " ";
1250   Node->getSelector().print(OS);
1251 }
1252 
1253 void TextNodeDumper::VisitObjCProtocolExpr(const ObjCProtocolExpr *Node) {
1254   OS << ' ' << *Node->getProtocol();
1255 }
1256 
1257 void TextNodeDumper::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *Node) {
1258   if (Node->isImplicitProperty()) {
1259     OS << " Kind=MethodRef Getter=\"";
1260     if (Node->getImplicitPropertyGetter())
1261       Node->getImplicitPropertyGetter()->getSelector().print(OS);
1262     else
1263       OS << "(null)";
1264 
1265     OS << "\" Setter=\"";
1266     if (ObjCMethodDecl *Setter = Node->getImplicitPropertySetter())
1267       Setter->getSelector().print(OS);
1268     else
1269       OS << "(null)";
1270     OS << "\"";
1271   } else {
1272     OS << " Kind=PropertyRef Property=\"" << *Node->getExplicitProperty()
1273        << '"';
1274   }
1275 
1276   if (Node->isSuperReceiver())
1277     OS << " super";
1278 
1279   OS << " Messaging=";
1280   if (Node->isMessagingGetter() && Node->isMessagingSetter())
1281     OS << "Getter&Setter";
1282   else if (Node->isMessagingGetter())
1283     OS << "Getter";
1284   else if (Node->isMessagingSetter())
1285     OS << "Setter";
1286 }
1287 
1288 void TextNodeDumper::VisitObjCSubscriptRefExpr(
1289     const ObjCSubscriptRefExpr *Node) {
1290   if (Node->isArraySubscriptRefExpr())
1291     OS << " Kind=ArraySubscript GetterForArray=\"";
1292   else
1293     OS << " Kind=DictionarySubscript GetterForDictionary=\"";
1294   if (Node->getAtIndexMethodDecl())
1295     Node->getAtIndexMethodDecl()->getSelector().print(OS);
1296   else
1297     OS << "(null)";
1298 
1299   if (Node->isArraySubscriptRefExpr())
1300     OS << "\" SetterForArray=\"";
1301   else
1302     OS << "\" SetterForDictionary=\"";
1303   if (Node->setAtIndexMethodDecl())
1304     Node->setAtIndexMethodDecl()->getSelector().print(OS);
1305   else
1306     OS << "(null)";
1307 }
1308 
1309 void TextNodeDumper::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *Node) {
1310   OS << " " << (Node->getValue() ? "__objc_yes" : "__objc_no");
1311 }
1312 
1313 void TextNodeDumper::VisitOMPIteratorExpr(const OMPIteratorExpr *Node) {
1314   OS << " ";
1315   for (unsigned I = 0, E = Node->numOfIterators(); I < E; ++I) {
1316     Visit(Node->getIteratorDecl(I));
1317     OS << " = ";
1318     const OMPIteratorExpr::IteratorRange Range = Node->getIteratorRange(I);
1319     OS << " begin ";
1320     Visit(Range.Begin);
1321     OS << " end ";
1322     Visit(Range.End);
1323     if (Range.Step) {
1324       OS << " step ";
1325       Visit(Range.Step);
1326     }
1327   }
1328 }
1329 
1330 void TextNodeDumper::VisitRValueReferenceType(const ReferenceType *T) {
1331   if (T->isSpelledAsLValue())
1332     OS << " written as lvalue reference";
1333 }
1334 
1335 void TextNodeDumper::VisitArrayType(const ArrayType *T) {
1336   switch (T->getSizeModifier()) {
1337   case ArrayType::Normal:
1338     break;
1339   case ArrayType::Static:
1340     OS << " static";
1341     break;
1342   case ArrayType::Star:
1343     OS << " *";
1344     break;
1345   }
1346   OS << " " << T->getIndexTypeQualifiers().getAsString();
1347 }
1348 
1349 void TextNodeDumper::VisitConstantArrayType(const ConstantArrayType *T) {
1350   OS << " " << T->getSize();
1351   VisitArrayType(T);
1352 }
1353 
1354 void TextNodeDumper::VisitVariableArrayType(const VariableArrayType *T) {
1355   OS << " ";
1356   dumpSourceRange(T->getBracketsRange());
1357   VisitArrayType(T);
1358 }
1359 
1360 void TextNodeDumper::VisitDependentSizedArrayType(
1361     const DependentSizedArrayType *T) {
1362   VisitArrayType(T);
1363   OS << " ";
1364   dumpSourceRange(T->getBracketsRange());
1365 }
1366 
1367 void TextNodeDumper::VisitDependentSizedExtVectorType(
1368     const DependentSizedExtVectorType *T) {
1369   OS << " ";
1370   dumpLocation(T->getAttributeLoc());
1371 }
1372 
1373 void TextNodeDumper::VisitVectorType(const VectorType *T) {
1374   switch (T->getVectorKind()) {
1375   case VectorType::GenericVector:
1376     break;
1377   case VectorType::AltiVecVector:
1378     OS << " altivec";
1379     break;
1380   case VectorType::AltiVecPixel:
1381     OS << " altivec pixel";
1382     break;
1383   case VectorType::AltiVecBool:
1384     OS << " altivec bool";
1385     break;
1386   case VectorType::NeonVector:
1387     OS << " neon";
1388     break;
1389   case VectorType::NeonPolyVector:
1390     OS << " neon poly";
1391     break;
1392   }
1393   OS << " " << T->getNumElements();
1394 }
1395 
1396 void TextNodeDumper::VisitFunctionType(const FunctionType *T) {
1397   auto EI = T->getExtInfo();
1398   if (EI.getNoReturn())
1399     OS << " noreturn";
1400   if (EI.getProducesResult())
1401     OS << " produces_result";
1402   if (EI.getHasRegParm())
1403     OS << " regparm " << EI.getRegParm();
1404   OS << " " << FunctionType::getNameForCallConv(EI.getCC());
1405 }
1406 
1407 void TextNodeDumper::VisitFunctionProtoType(const FunctionProtoType *T) {
1408   auto EPI = T->getExtProtoInfo();
1409   if (EPI.HasTrailingReturn)
1410     OS << " trailing_return";
1411   if (T->isConst())
1412     OS << " const";
1413   if (T->isVolatile())
1414     OS << " volatile";
1415   if (T->isRestrict())
1416     OS << " restrict";
1417   if (T->getExtProtoInfo().Variadic)
1418     OS << " variadic";
1419   switch (EPI.RefQualifier) {
1420   case RQ_None:
1421     break;
1422   case RQ_LValue:
1423     OS << " &";
1424     break;
1425   case RQ_RValue:
1426     OS << " &&";
1427     break;
1428   }
1429   // FIXME: Exception specification.
1430   // FIXME: Consumed parameters.
1431   VisitFunctionType(T);
1432 }
1433 
1434 void TextNodeDumper::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
1435   dumpDeclRef(T->getDecl());
1436 }
1437 
1438 void TextNodeDumper::VisitTypedefType(const TypedefType *T) {
1439   dumpDeclRef(T->getDecl());
1440 }
1441 
1442 void TextNodeDumper::VisitUnaryTransformType(const UnaryTransformType *T) {
1443   switch (T->getUTTKind()) {
1444   case UnaryTransformType::EnumUnderlyingType:
1445     OS << " underlying_type";
1446     break;
1447   }
1448 }
1449 
1450 void TextNodeDumper::VisitTagType(const TagType *T) {
1451   dumpDeclRef(T->getDecl());
1452 }
1453 
1454 void TextNodeDumper::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
1455   OS << " depth " << T->getDepth() << " index " << T->getIndex();
1456   if (T->isParameterPack())
1457     OS << " pack";
1458   dumpDeclRef(T->getDecl());
1459 }
1460 
1461 void TextNodeDumper::VisitAutoType(const AutoType *T) {
1462   if (T->isDecltypeAuto())
1463     OS << " decltype(auto)";
1464   if (!T->isDeduced())
1465     OS << " undeduced";
1466   if (T->isConstrained()) {
1467     dumpDeclRef(T->getTypeConstraintConcept());
1468     for (const auto &Arg : T->getTypeConstraintArguments())
1469       VisitTemplateArgument(Arg);
1470   }
1471 }
1472 
1473 void TextNodeDumper::VisitTemplateSpecializationType(
1474     const TemplateSpecializationType *T) {
1475   if (T->isTypeAlias())
1476     OS << " alias";
1477   OS << " ";
1478   T->getTemplateName().dump(OS);
1479 }
1480 
1481 void TextNodeDumper::VisitInjectedClassNameType(
1482     const InjectedClassNameType *T) {
1483   dumpDeclRef(T->getDecl());
1484 }
1485 
1486 void TextNodeDumper::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
1487   dumpDeclRef(T->getDecl());
1488 }
1489 
1490 void TextNodeDumper::VisitPackExpansionType(const PackExpansionType *T) {
1491   if (auto N = T->getNumExpansions())
1492     OS << " expansions " << *N;
1493 }
1494 
1495 void TextNodeDumper::VisitLabelDecl(const LabelDecl *D) { dumpName(D); }
1496 
1497 void TextNodeDumper::VisitTypedefDecl(const TypedefDecl *D) {
1498   dumpName(D);
1499   dumpType(D->getUnderlyingType());
1500   if (D->isModulePrivate())
1501     OS << " __module_private__";
1502 }
1503 
1504 void TextNodeDumper::VisitEnumDecl(const EnumDecl *D) {
1505   if (D->isScoped()) {
1506     if (D->isScopedUsingClassTag())
1507       OS << " class";
1508     else
1509       OS << " struct";
1510   }
1511   dumpName(D);
1512   if (D->isModulePrivate())
1513     OS << " __module_private__";
1514   if (D->isFixed())
1515     dumpType(D->getIntegerType());
1516 }
1517 
1518 void TextNodeDumper::VisitRecordDecl(const RecordDecl *D) {
1519   OS << ' ' << D->getKindName();
1520   dumpName(D);
1521   if (D->isModulePrivate())
1522     OS << " __module_private__";
1523   if (D->isCompleteDefinition())
1524     OS << " definition";
1525 }
1526 
1527 void TextNodeDumper::VisitEnumConstantDecl(const EnumConstantDecl *D) {
1528   dumpName(D);
1529   dumpType(D->getType());
1530 }
1531 
1532 void TextNodeDumper::VisitIndirectFieldDecl(const IndirectFieldDecl *D) {
1533   dumpName(D);
1534   dumpType(D->getType());
1535 
1536   for (const auto *Child : D->chain())
1537     dumpDeclRef(Child);
1538 }
1539 
1540 void TextNodeDumper::VisitFunctionDecl(const FunctionDecl *D) {
1541   dumpName(D);
1542   dumpType(D->getType());
1543 
1544   StorageClass SC = D->getStorageClass();
1545   if (SC != SC_None)
1546     OS << ' ' << VarDecl::getStorageClassSpecifierString(SC);
1547   if (D->isInlineSpecified())
1548     OS << " inline";
1549   if (D->isVirtualAsWritten())
1550     OS << " virtual";
1551   if (D->isModulePrivate())
1552     OS << " __module_private__";
1553 
1554   if (D->isPure())
1555     OS << " pure";
1556   if (D->isDefaulted()) {
1557     OS << " default";
1558     if (D->isDeleted())
1559       OS << "_delete";
1560   }
1561   if (D->isDeletedAsWritten())
1562     OS << " delete";
1563   if (D->isTrivial())
1564     OS << " trivial";
1565 
1566   if (const auto *FPT = D->getType()->getAs<FunctionProtoType>()) {
1567     FunctionProtoType::ExtProtoInfo EPI = FPT->getExtProtoInfo();
1568     switch (EPI.ExceptionSpec.Type) {
1569     default:
1570       break;
1571     case EST_Unevaluated:
1572       OS << " noexcept-unevaluated " << EPI.ExceptionSpec.SourceDecl;
1573       break;
1574     case EST_Uninstantiated:
1575       OS << " noexcept-uninstantiated " << EPI.ExceptionSpec.SourceTemplate;
1576       break;
1577     }
1578   }
1579 
1580   if (const auto *MD = dyn_cast<CXXMethodDecl>(D)) {
1581     if (MD->size_overridden_methods() != 0) {
1582       auto dumpOverride = [=](const CXXMethodDecl *D) {
1583         SplitQualType T_split = D->getType().split();
1584         OS << D << " " << D->getParent()->getName()
1585            << "::" << D->getNameAsString() << " '"
1586            << QualType::getAsString(T_split, PrintPolicy) << "'";
1587       };
1588 
1589       AddChild([=] {
1590         auto Overrides = MD->overridden_methods();
1591         OS << "Overrides: [ ";
1592         dumpOverride(*Overrides.begin());
1593         for (const auto *Override :
1594              llvm::make_range(Overrides.begin() + 1, Overrides.end())) {
1595           OS << ", ";
1596           dumpOverride(Override);
1597         }
1598         OS << " ]";
1599       });
1600     }
1601   }
1602 
1603   // Since NumParams comes from the FunctionProtoType of the FunctionDecl and
1604   // the Params are set later, it is possible for a dump during debugging to
1605   // encounter a FunctionDecl that has been created but hasn't been assigned
1606   // ParmVarDecls yet.
1607   if (!D->param_empty() && !D->param_begin())
1608     OS << " <<<NULL params x " << D->getNumParams() << ">>>";
1609 }
1610 
1611 void TextNodeDumper::VisitLifetimeExtendedTemporaryDecl(
1612     const LifetimeExtendedTemporaryDecl *D) {
1613   OS << " extended by ";
1614   dumpBareDeclRef(D->getExtendingDecl());
1615   OS << " mangling ";
1616   {
1617     ColorScope Color(OS, ShowColors, ValueColor);
1618     OS << D->getManglingNumber();
1619   }
1620 }
1621 
1622 void TextNodeDumper::VisitFieldDecl(const FieldDecl *D) {
1623   dumpName(D);
1624   dumpType(D->getType());
1625   if (D->isMutable())
1626     OS << " mutable";
1627   if (D->isModulePrivate())
1628     OS << " __module_private__";
1629 }
1630 
1631 void TextNodeDumper::VisitVarDecl(const VarDecl *D) {
1632   dumpName(D);
1633   dumpType(D->getType());
1634   StorageClass SC = D->getStorageClass();
1635   if (SC != SC_None)
1636     OS << ' ' << VarDecl::getStorageClassSpecifierString(SC);
1637   switch (D->getTLSKind()) {
1638   case VarDecl::TLS_None:
1639     break;
1640   case VarDecl::TLS_Static:
1641     OS << " tls";
1642     break;
1643   case VarDecl::TLS_Dynamic:
1644     OS << " tls_dynamic";
1645     break;
1646   }
1647   if (D->isModulePrivate())
1648     OS << " __module_private__";
1649   if (D->isNRVOVariable())
1650     OS << " nrvo";
1651   if (D->isInline())
1652     OS << " inline";
1653   if (D->isConstexpr())
1654     OS << " constexpr";
1655   if (D->hasInit()) {
1656     switch (D->getInitStyle()) {
1657     case VarDecl::CInit:
1658       OS << " cinit";
1659       break;
1660     case VarDecl::CallInit:
1661       OS << " callinit";
1662       break;
1663     case VarDecl::ListInit:
1664       OS << " listinit";
1665       break;
1666     }
1667   }
1668   if (D->needsDestruction(D->getASTContext()))
1669     OS << " destroyed";
1670   if (D->isParameterPack())
1671     OS << " pack";
1672 
1673   if (D->hasInit()) {
1674     const Expr *E = D->getInit();
1675     // Only dump the value of constexpr VarDecls for now.
1676     if (E && !E->isValueDependent() && D->isConstexpr()) {
1677       const APValue *Value = D->evaluateValue();
1678       if (Value)
1679         AddChild("value", [=] { Visit(*Value, E->getType()); });
1680     }
1681   }
1682 }
1683 
1684 void TextNodeDumper::VisitBindingDecl(const BindingDecl *D) {
1685   dumpName(D);
1686   dumpType(D->getType());
1687 }
1688 
1689 void TextNodeDumper::VisitCapturedDecl(const CapturedDecl *D) {
1690   if (D->isNothrow())
1691     OS << " nothrow";
1692 }
1693 
1694 void TextNodeDumper::VisitImportDecl(const ImportDecl *D) {
1695   OS << ' ' << D->getImportedModule()->getFullModuleName();
1696 
1697   for (Decl *InitD :
1698        D->getASTContext().getModuleInitializers(D->getImportedModule()))
1699     dumpDeclRef(InitD, "initializer");
1700 }
1701 
1702 void TextNodeDumper::VisitPragmaCommentDecl(const PragmaCommentDecl *D) {
1703   OS << ' ';
1704   switch (D->getCommentKind()) {
1705   case PCK_Unknown:
1706     llvm_unreachable("unexpected pragma comment kind");
1707   case PCK_Compiler:
1708     OS << "compiler";
1709     break;
1710   case PCK_ExeStr:
1711     OS << "exestr";
1712     break;
1713   case PCK_Lib:
1714     OS << "lib";
1715     break;
1716   case PCK_Linker:
1717     OS << "linker";
1718     break;
1719   case PCK_User:
1720     OS << "user";
1721     break;
1722   }
1723   StringRef Arg = D->getArg();
1724   if (!Arg.empty())
1725     OS << " \"" << Arg << "\"";
1726 }
1727 
1728 void TextNodeDumper::VisitPragmaDetectMismatchDecl(
1729     const PragmaDetectMismatchDecl *D) {
1730   OS << " \"" << D->getName() << "\" \"" << D->getValue() << "\"";
1731 }
1732 
1733 void TextNodeDumper::VisitOMPExecutableDirective(
1734     const OMPExecutableDirective *D) {
1735   if (D->isStandaloneDirective())
1736     OS << " openmp_standalone_directive";
1737 }
1738 
1739 void TextNodeDumper::VisitOMPDeclareReductionDecl(
1740     const OMPDeclareReductionDecl *D) {
1741   dumpName(D);
1742   dumpType(D->getType());
1743   OS << " combiner";
1744   dumpPointer(D->getCombiner());
1745   if (const auto *Initializer = D->getInitializer()) {
1746     OS << " initializer";
1747     dumpPointer(Initializer);
1748     switch (D->getInitializerKind()) {
1749     case OMPDeclareReductionDecl::DirectInit:
1750       OS << " omp_priv = ";
1751       break;
1752     case OMPDeclareReductionDecl::CopyInit:
1753       OS << " omp_priv ()";
1754       break;
1755     case OMPDeclareReductionDecl::CallInit:
1756       break;
1757     }
1758   }
1759 }
1760 
1761 void TextNodeDumper::VisitOMPRequiresDecl(const OMPRequiresDecl *D) {
1762   for (const auto *C : D->clauselists()) {
1763     AddChild([=] {
1764       if (!C) {
1765         ColorScope Color(OS, ShowColors, NullColor);
1766         OS << "<<<NULL>>> OMPClause";
1767         return;
1768       }
1769       {
1770         ColorScope Color(OS, ShowColors, AttrColor);
1771         StringRef ClauseName(
1772             llvm::omp::getOpenMPClauseName(C->getClauseKind()));
1773         OS << "OMP" << ClauseName.substr(/*Start=*/0, /*N=*/1).upper()
1774            << ClauseName.drop_front() << "Clause";
1775       }
1776       dumpPointer(C);
1777       dumpSourceRange(SourceRange(C->getBeginLoc(), C->getEndLoc()));
1778     });
1779   }
1780 }
1781 
1782 void TextNodeDumper::VisitOMPCapturedExprDecl(const OMPCapturedExprDecl *D) {
1783   dumpName(D);
1784   dumpType(D->getType());
1785 }
1786 
1787 void TextNodeDumper::VisitNamespaceDecl(const NamespaceDecl *D) {
1788   dumpName(D);
1789   if (D->isInline())
1790     OS << " inline";
1791   if (!D->isOriginalNamespace())
1792     dumpDeclRef(D->getOriginalNamespace(), "original");
1793 }
1794 
1795 void TextNodeDumper::VisitUsingDirectiveDecl(const UsingDirectiveDecl *D) {
1796   OS << ' ';
1797   dumpBareDeclRef(D->getNominatedNamespace());
1798 }
1799 
1800 void TextNodeDumper::VisitNamespaceAliasDecl(const NamespaceAliasDecl *D) {
1801   dumpName(D);
1802   dumpDeclRef(D->getAliasedNamespace());
1803 }
1804 
1805 void TextNodeDumper::VisitTypeAliasDecl(const TypeAliasDecl *D) {
1806   dumpName(D);
1807   dumpType(D->getUnderlyingType());
1808 }
1809 
1810 void TextNodeDumper::VisitTypeAliasTemplateDecl(
1811     const TypeAliasTemplateDecl *D) {
1812   dumpName(D);
1813 }
1814 
1815 void TextNodeDumper::VisitCXXRecordDecl(const CXXRecordDecl *D) {
1816   VisitRecordDecl(D);
1817   if (!D->isCompleteDefinition())
1818     return;
1819 
1820   AddChild([=] {
1821     {
1822       ColorScope Color(OS, ShowColors, DeclKindNameColor);
1823       OS << "DefinitionData";
1824     }
1825 #define FLAG(fn, name)                                                         \
1826   if (D->fn())                                                                 \
1827     OS << " " #name;
1828     FLAG(isParsingBaseSpecifiers, parsing_base_specifiers);
1829 
1830     FLAG(isGenericLambda, generic);
1831     FLAG(isLambda, lambda);
1832 
1833     FLAG(isAnonymousStructOrUnion, is_anonymous);
1834     FLAG(canPassInRegisters, pass_in_registers);
1835     FLAG(isEmpty, empty);
1836     FLAG(isAggregate, aggregate);
1837     FLAG(isStandardLayout, standard_layout);
1838     FLAG(isTriviallyCopyable, trivially_copyable);
1839     FLAG(isPOD, pod);
1840     FLAG(isTrivial, trivial);
1841     FLAG(isPolymorphic, polymorphic);
1842     FLAG(isAbstract, abstract);
1843     FLAG(isLiteral, literal);
1844 
1845     FLAG(hasUserDeclaredConstructor, has_user_declared_ctor);
1846     FLAG(hasConstexprNonCopyMoveConstructor, has_constexpr_non_copy_move_ctor);
1847     FLAG(hasMutableFields, has_mutable_fields);
1848     FLAG(hasVariantMembers, has_variant_members);
1849     FLAG(allowConstDefaultInit, can_const_default_init);
1850 
1851     AddChild([=] {
1852       {
1853         ColorScope Color(OS, ShowColors, DeclKindNameColor);
1854         OS << "DefaultConstructor";
1855       }
1856       FLAG(hasDefaultConstructor, exists);
1857       FLAG(hasTrivialDefaultConstructor, trivial);
1858       FLAG(hasNonTrivialDefaultConstructor, non_trivial);
1859       FLAG(hasUserProvidedDefaultConstructor, user_provided);
1860       FLAG(hasConstexprDefaultConstructor, constexpr);
1861       FLAG(needsImplicitDefaultConstructor, needs_implicit);
1862       FLAG(defaultedDefaultConstructorIsConstexpr, defaulted_is_constexpr);
1863     });
1864 
1865     AddChild([=] {
1866       {
1867         ColorScope Color(OS, ShowColors, DeclKindNameColor);
1868         OS << "CopyConstructor";
1869       }
1870       FLAG(hasSimpleCopyConstructor, simple);
1871       FLAG(hasTrivialCopyConstructor, trivial);
1872       FLAG(hasNonTrivialCopyConstructor, non_trivial);
1873       FLAG(hasUserDeclaredCopyConstructor, user_declared);
1874       FLAG(hasCopyConstructorWithConstParam, has_const_param);
1875       FLAG(needsImplicitCopyConstructor, needs_implicit);
1876       FLAG(needsOverloadResolutionForCopyConstructor,
1877            needs_overload_resolution);
1878       if (!D->needsOverloadResolutionForCopyConstructor())
1879         FLAG(defaultedCopyConstructorIsDeleted, defaulted_is_deleted);
1880       FLAG(implicitCopyConstructorHasConstParam, implicit_has_const_param);
1881     });
1882 
1883     AddChild([=] {
1884       {
1885         ColorScope Color(OS, ShowColors, DeclKindNameColor);
1886         OS << "MoveConstructor";
1887       }
1888       FLAG(hasMoveConstructor, exists);
1889       FLAG(hasSimpleMoveConstructor, simple);
1890       FLAG(hasTrivialMoveConstructor, trivial);
1891       FLAG(hasNonTrivialMoveConstructor, non_trivial);
1892       FLAG(hasUserDeclaredMoveConstructor, user_declared);
1893       FLAG(needsImplicitMoveConstructor, needs_implicit);
1894       FLAG(needsOverloadResolutionForMoveConstructor,
1895            needs_overload_resolution);
1896       if (!D->needsOverloadResolutionForMoveConstructor())
1897         FLAG(defaultedMoveConstructorIsDeleted, defaulted_is_deleted);
1898     });
1899 
1900     AddChild([=] {
1901       {
1902         ColorScope Color(OS, ShowColors, DeclKindNameColor);
1903         OS << "CopyAssignment";
1904       }
1905       FLAG(hasSimpleCopyAssignment, simple);
1906       FLAG(hasTrivialCopyAssignment, trivial);
1907       FLAG(hasNonTrivialCopyAssignment, non_trivial);
1908       FLAG(hasCopyAssignmentWithConstParam, has_const_param);
1909       FLAG(hasUserDeclaredCopyAssignment, user_declared);
1910       FLAG(needsImplicitCopyAssignment, needs_implicit);
1911       FLAG(needsOverloadResolutionForCopyAssignment, needs_overload_resolution);
1912       FLAG(implicitCopyAssignmentHasConstParam, implicit_has_const_param);
1913     });
1914 
1915     AddChild([=] {
1916       {
1917         ColorScope Color(OS, ShowColors, DeclKindNameColor);
1918         OS << "MoveAssignment";
1919       }
1920       FLAG(hasMoveAssignment, exists);
1921       FLAG(hasSimpleMoveAssignment, simple);
1922       FLAG(hasTrivialMoveAssignment, trivial);
1923       FLAG(hasNonTrivialMoveAssignment, non_trivial);
1924       FLAG(hasUserDeclaredMoveAssignment, user_declared);
1925       FLAG(needsImplicitMoveAssignment, needs_implicit);
1926       FLAG(needsOverloadResolutionForMoveAssignment, needs_overload_resolution);
1927     });
1928 
1929     AddChild([=] {
1930       {
1931         ColorScope Color(OS, ShowColors, DeclKindNameColor);
1932         OS << "Destructor";
1933       }
1934       FLAG(hasSimpleDestructor, simple);
1935       FLAG(hasIrrelevantDestructor, irrelevant);
1936       FLAG(hasTrivialDestructor, trivial);
1937       FLAG(hasNonTrivialDestructor, non_trivial);
1938       FLAG(hasUserDeclaredDestructor, user_declared);
1939       FLAG(hasConstexprDestructor, constexpr);
1940       FLAG(needsImplicitDestructor, needs_implicit);
1941       FLAG(needsOverloadResolutionForDestructor, needs_overload_resolution);
1942       if (!D->needsOverloadResolutionForDestructor())
1943         FLAG(defaultedDestructorIsDeleted, defaulted_is_deleted);
1944     });
1945   });
1946 
1947   for (const auto &I : D->bases()) {
1948     AddChild([=] {
1949       if (I.isVirtual())
1950         OS << "virtual ";
1951       dumpAccessSpecifier(I.getAccessSpecifier());
1952       dumpType(I.getType());
1953       if (I.isPackExpansion())
1954         OS << "...";
1955     });
1956   }
1957 }
1958 
1959 void TextNodeDumper::VisitFunctionTemplateDecl(const FunctionTemplateDecl *D) {
1960   dumpName(D);
1961 }
1962 
1963 void TextNodeDumper::VisitClassTemplateDecl(const ClassTemplateDecl *D) {
1964   dumpName(D);
1965 }
1966 
1967 void TextNodeDumper::VisitVarTemplateDecl(const VarTemplateDecl *D) {
1968   dumpName(D);
1969 }
1970 
1971 void TextNodeDumper::VisitBuiltinTemplateDecl(const BuiltinTemplateDecl *D) {
1972   dumpName(D);
1973 }
1974 
1975 void TextNodeDumper::VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D) {
1976   if (const auto *TC = D->getTypeConstraint()) {
1977     OS << " ";
1978     dumpBareDeclRef(TC->getNamedConcept());
1979     if (TC->getNamedConcept() != TC->getFoundDecl()) {
1980       OS << " (";
1981       dumpBareDeclRef(TC->getFoundDecl());
1982       OS << ")";
1983     }
1984     Visit(TC->getImmediatelyDeclaredConstraint());
1985   } else if (D->wasDeclaredWithTypename())
1986     OS << " typename";
1987   else
1988     OS << " class";
1989   OS << " depth " << D->getDepth() << " index " << D->getIndex();
1990   if (D->isParameterPack())
1991     OS << " ...";
1992   dumpName(D);
1993 }
1994 
1995 void TextNodeDumper::VisitNonTypeTemplateParmDecl(
1996     const NonTypeTemplateParmDecl *D) {
1997   dumpType(D->getType());
1998   OS << " depth " << D->getDepth() << " index " << D->getIndex();
1999   if (D->isParameterPack())
2000     OS << " ...";
2001   dumpName(D);
2002 }
2003 
2004 void TextNodeDumper::VisitTemplateTemplateParmDecl(
2005     const TemplateTemplateParmDecl *D) {
2006   OS << " depth " << D->getDepth() << " index " << D->getIndex();
2007   if (D->isParameterPack())
2008     OS << " ...";
2009   dumpName(D);
2010 }
2011 
2012 void TextNodeDumper::VisitUsingDecl(const UsingDecl *D) {
2013   OS << ' ';
2014   if (D->getQualifier())
2015     D->getQualifier()->print(OS, D->getASTContext().getPrintingPolicy());
2016   OS << D->getNameAsString();
2017 }
2018 
2019 void TextNodeDumper::VisitUnresolvedUsingTypenameDecl(
2020     const UnresolvedUsingTypenameDecl *D) {
2021   OS << ' ';
2022   if (D->getQualifier())
2023     D->getQualifier()->print(OS, D->getASTContext().getPrintingPolicy());
2024   OS << D->getNameAsString();
2025 }
2026 
2027 void TextNodeDumper::VisitUnresolvedUsingValueDecl(
2028     const UnresolvedUsingValueDecl *D) {
2029   OS << ' ';
2030   if (D->getQualifier())
2031     D->getQualifier()->print(OS, D->getASTContext().getPrintingPolicy());
2032   OS << D->getNameAsString();
2033   dumpType(D->getType());
2034 }
2035 
2036 void TextNodeDumper::VisitUsingShadowDecl(const UsingShadowDecl *D) {
2037   OS << ' ';
2038   dumpBareDeclRef(D->getTargetDecl());
2039 }
2040 
2041 void TextNodeDumper::VisitConstructorUsingShadowDecl(
2042     const ConstructorUsingShadowDecl *D) {
2043   if (D->constructsVirtualBase())
2044     OS << " virtual";
2045 
2046   AddChild([=] {
2047     OS << "target ";
2048     dumpBareDeclRef(D->getTargetDecl());
2049   });
2050 
2051   AddChild([=] {
2052     OS << "nominated ";
2053     dumpBareDeclRef(D->getNominatedBaseClass());
2054     OS << ' ';
2055     dumpBareDeclRef(D->getNominatedBaseClassShadowDecl());
2056   });
2057 
2058   AddChild([=] {
2059     OS << "constructed ";
2060     dumpBareDeclRef(D->getConstructedBaseClass());
2061     OS << ' ';
2062     dumpBareDeclRef(D->getConstructedBaseClassShadowDecl());
2063   });
2064 }
2065 
2066 void TextNodeDumper::VisitLinkageSpecDecl(const LinkageSpecDecl *D) {
2067   switch (D->getLanguage()) {
2068   case LinkageSpecDecl::lang_c:
2069     OS << " C";
2070     break;
2071   case LinkageSpecDecl::lang_cxx:
2072     OS << " C++";
2073     break;
2074   }
2075 }
2076 
2077 void TextNodeDumper::VisitAccessSpecDecl(const AccessSpecDecl *D) {
2078   OS << ' ';
2079   dumpAccessSpecifier(D->getAccess());
2080 }
2081 
2082 void TextNodeDumper::VisitFriendDecl(const FriendDecl *D) {
2083   if (TypeSourceInfo *T = D->getFriendType())
2084     dumpType(T->getType());
2085 }
2086 
2087 void TextNodeDumper::VisitObjCIvarDecl(const ObjCIvarDecl *D) {
2088   dumpName(D);
2089   dumpType(D->getType());
2090   if (D->getSynthesize())
2091     OS << " synthesize";
2092 
2093   switch (D->getAccessControl()) {
2094   case ObjCIvarDecl::None:
2095     OS << " none";
2096     break;
2097   case ObjCIvarDecl::Private:
2098     OS << " private";
2099     break;
2100   case ObjCIvarDecl::Protected:
2101     OS << " protected";
2102     break;
2103   case ObjCIvarDecl::Public:
2104     OS << " public";
2105     break;
2106   case ObjCIvarDecl::Package:
2107     OS << " package";
2108     break;
2109   }
2110 }
2111 
2112 void TextNodeDumper::VisitObjCMethodDecl(const ObjCMethodDecl *D) {
2113   if (D->isInstanceMethod())
2114     OS << " -";
2115   else
2116     OS << " +";
2117   dumpName(D);
2118   dumpType(D->getReturnType());
2119 
2120   if (D->isVariadic())
2121     OS << " variadic";
2122 }
2123 
2124 void TextNodeDumper::VisitObjCTypeParamDecl(const ObjCTypeParamDecl *D) {
2125   dumpName(D);
2126   switch (D->getVariance()) {
2127   case ObjCTypeParamVariance::Invariant:
2128     break;
2129 
2130   case ObjCTypeParamVariance::Covariant:
2131     OS << " covariant";
2132     break;
2133 
2134   case ObjCTypeParamVariance::Contravariant:
2135     OS << " contravariant";
2136     break;
2137   }
2138 
2139   if (D->hasExplicitBound())
2140     OS << " bounded";
2141   dumpType(D->getUnderlyingType());
2142 }
2143 
2144 void TextNodeDumper::VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
2145   dumpName(D);
2146   dumpDeclRef(D->getClassInterface());
2147   dumpDeclRef(D->getImplementation());
2148   for (const auto *P : D->protocols())
2149     dumpDeclRef(P);
2150 }
2151 
2152 void TextNodeDumper::VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
2153   dumpName(D);
2154   dumpDeclRef(D->getClassInterface());
2155   dumpDeclRef(D->getCategoryDecl());
2156 }
2157 
2158 void TextNodeDumper::VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
2159   dumpName(D);
2160 
2161   for (const auto *Child : D->protocols())
2162     dumpDeclRef(Child);
2163 }
2164 
2165 void TextNodeDumper::VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
2166   dumpName(D);
2167   dumpDeclRef(D->getSuperClass(), "super");
2168 
2169   dumpDeclRef(D->getImplementation());
2170   for (const auto *Child : D->protocols())
2171     dumpDeclRef(Child);
2172 }
2173 
2174 void TextNodeDumper::VisitObjCImplementationDecl(
2175     const ObjCImplementationDecl *D) {
2176   dumpName(D);
2177   dumpDeclRef(D->getSuperClass(), "super");
2178   dumpDeclRef(D->getClassInterface());
2179 }
2180 
2181 void TextNodeDumper::VisitObjCCompatibleAliasDecl(
2182     const ObjCCompatibleAliasDecl *D) {
2183   dumpName(D);
2184   dumpDeclRef(D->getClassInterface());
2185 }
2186 
2187 void TextNodeDumper::VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
2188   dumpName(D);
2189   dumpType(D->getType());
2190 
2191   if (D->getPropertyImplementation() == ObjCPropertyDecl::Required)
2192     OS << " required";
2193   else if (D->getPropertyImplementation() == ObjCPropertyDecl::Optional)
2194     OS << " optional";
2195 
2196   ObjCPropertyAttribute::Kind Attrs = D->getPropertyAttributes();
2197   if (Attrs != ObjCPropertyAttribute::kind_noattr) {
2198     if (Attrs & ObjCPropertyAttribute::kind_readonly)
2199       OS << " readonly";
2200     if (Attrs & ObjCPropertyAttribute::kind_assign)
2201       OS << " assign";
2202     if (Attrs & ObjCPropertyAttribute::kind_readwrite)
2203       OS << " readwrite";
2204     if (Attrs & ObjCPropertyAttribute::kind_retain)
2205       OS << " retain";
2206     if (Attrs & ObjCPropertyAttribute::kind_copy)
2207       OS << " copy";
2208     if (Attrs & ObjCPropertyAttribute::kind_nonatomic)
2209       OS << " nonatomic";
2210     if (Attrs & ObjCPropertyAttribute::kind_atomic)
2211       OS << " atomic";
2212     if (Attrs & ObjCPropertyAttribute::kind_weak)
2213       OS << " weak";
2214     if (Attrs & ObjCPropertyAttribute::kind_strong)
2215       OS << " strong";
2216     if (Attrs & ObjCPropertyAttribute::kind_unsafe_unretained)
2217       OS << " unsafe_unretained";
2218     if (Attrs & ObjCPropertyAttribute::kind_class)
2219       OS << " class";
2220     if (Attrs & ObjCPropertyAttribute::kind_direct)
2221       OS << " direct";
2222     if (Attrs & ObjCPropertyAttribute::kind_getter)
2223       dumpDeclRef(D->getGetterMethodDecl(), "getter");
2224     if (Attrs & ObjCPropertyAttribute::kind_setter)
2225       dumpDeclRef(D->getSetterMethodDecl(), "setter");
2226   }
2227 }
2228 
2229 void TextNodeDumper::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
2230   dumpName(D->getPropertyDecl());
2231   if (D->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize)
2232     OS << " synthesize";
2233   else
2234     OS << " dynamic";
2235   dumpDeclRef(D->getPropertyDecl());
2236   dumpDeclRef(D->getPropertyIvarDecl());
2237 }
2238 
2239 void TextNodeDumper::VisitBlockDecl(const BlockDecl *D) {
2240   if (D->isVariadic())
2241     OS << " variadic";
2242 
2243   if (D->capturesCXXThis())
2244     OS << " captures_this";
2245 }
2246 
2247 void TextNodeDumper::VisitConceptDecl(const ConceptDecl *D) {
2248   dumpName(D);
2249 }
2250