xref: /freebsd/contrib/llvm-project/clang/lib/AST/JSONNodeDumper.cpp (revision eb24e1491f9900e922c78e53af588f22a3e9535f) 
1 #include "clang/AST/JSONNodeDumper.h"
2 #include "clang/Lex/Lexer.h"
3 #include "llvm/ADT/StringSwitch.h"
4 
5 using namespace clang;
6 
7 void JSONNodeDumper::addPreviousDeclaration(const Decl *D) {
8   switch (D->getKind()) {
9 #define DECL(DERIVED, BASE)                                                    \
10   case Decl::DERIVED:                                                          \
11     return writePreviousDeclImpl(cast<DERIVED##Decl>(D));
12 #define ABSTRACT_DECL(DECL)
13 #include "clang/AST/DeclNodes.inc"
14 #undef ABSTRACT_DECL
15 #undef DECL
16   }
17   llvm_unreachable("Decl that isn't part of DeclNodes.inc!");
18 }
19 
20 void JSONNodeDumper::Visit(const Attr *A) {
21   const char *AttrName = nullptr;
22   switch (A->getKind()) {
23 #define ATTR(X)                                                                \
24   case attr::X:                                                                \
25     AttrName = #X"Attr";                                                       \
26     break;
27 #include "clang/Basic/AttrList.inc"
28 #undef ATTR
29   }
30   JOS.attribute("id", createPointerRepresentation(A));
31   JOS.attribute("kind", AttrName);
32   JOS.attributeObject("range", [A, this] { writeSourceRange(A->getRange()); });
33   attributeOnlyIfTrue("inherited", A->isInherited());
34   attributeOnlyIfTrue("implicit", A->isImplicit());
35 
36   // FIXME: it would be useful for us to output the spelling kind as well as
37   // the actual spelling. This would allow us to distinguish between the
38   // various attribute syntaxes, but we don't currently track that information
39   // within the AST.
40   //JOS.attribute("spelling", A->getSpelling());
41 
42   InnerAttrVisitor::Visit(A);
43 }
44 
45 void JSONNodeDumper::Visit(const Stmt *S) {
46   if (!S)
47     return;
48 
49   JOS.attribute("id", createPointerRepresentation(S));
50   JOS.attribute("kind", S->getStmtClassName());
51   JOS.attributeObject("range",
52                       [S, this] { writeSourceRange(S->getSourceRange()); });
53 
54   if (const auto *E = dyn_cast<Expr>(S)) {
55     JOS.attribute("type", createQualType(E->getType()));
56     const char *Category = nullptr;
57     switch (E->getValueKind()) {
58     case VK_LValue: Category = "lvalue"; break;
59     case VK_XValue: Category = "xvalue"; break;
60     case VK_RValue: Category = "rvalue"; break;
61     }
62     JOS.attribute("valueCategory", Category);
63   }
64   InnerStmtVisitor::Visit(S);
65 }
66 
67 void JSONNodeDumper::Visit(const Type *T) {
68   JOS.attribute("id", createPointerRepresentation(T));
69   JOS.attribute("kind", (llvm::Twine(T->getTypeClassName()) + "Type").str());
70   JOS.attribute("type", createQualType(QualType(T, 0), /*Desugar*/ false));
71   attributeOnlyIfTrue("isDependent", T->isDependentType());
72   attributeOnlyIfTrue("isInstantiationDependent",
73                       T->isInstantiationDependentType());
74   attributeOnlyIfTrue("isVariablyModified", T->isVariablyModifiedType());
75   attributeOnlyIfTrue("containsUnexpandedPack",
76                       T->containsUnexpandedParameterPack());
77   attributeOnlyIfTrue("isImported", T->isFromAST());
78   InnerTypeVisitor::Visit(T);
79 }
80 
81 void JSONNodeDumper::Visit(QualType T) {
82   JOS.attribute("id", createPointerRepresentation(T.getAsOpaquePtr()));
83   JOS.attribute("kind", "QualType");
84   JOS.attribute("type", createQualType(T));
85   JOS.attribute("qualifiers", T.split().Quals.getAsString());
86 }
87 
88 void JSONNodeDumper::Visit(const Decl *D) {
89   JOS.attribute("id", createPointerRepresentation(D));
90 
91   if (!D)
92     return;
93 
94   JOS.attribute("kind", (llvm::Twine(D->getDeclKindName()) + "Decl").str());
95   JOS.attributeObject("loc",
96                       [D, this] { writeSourceLocation(D->getLocation()); });
97   JOS.attributeObject("range",
98                       [D, this] { writeSourceRange(D->getSourceRange()); });
99   attributeOnlyIfTrue("isImplicit", D->isImplicit());
100   attributeOnlyIfTrue("isInvalid", D->isInvalidDecl());
101 
102   if (D->isUsed())
103     JOS.attribute("isUsed", true);
104   else if (D->isThisDeclarationReferenced())
105     JOS.attribute("isReferenced", true);
106 
107   if (const auto *ND = dyn_cast<NamedDecl>(D))
108     attributeOnlyIfTrue("isHidden", ND->isHidden());
109 
110   if (D->getLexicalDeclContext() != D->getDeclContext())
111     JOS.attribute("parentDeclContext",
112                   createPointerRepresentation(D->getDeclContext()));
113 
114   addPreviousDeclaration(D);
115   InnerDeclVisitor::Visit(D);
116 }
117 
118 void JSONNodeDumper::Visit(const comments::Comment *C,
119                            const comments::FullComment *FC) {
120   if (!C)
121     return;
122 
123   JOS.attribute("id", createPointerRepresentation(C));
124   JOS.attribute("kind", C->getCommentKindName());
125   JOS.attributeObject("loc",
126                       [C, this] { writeSourceLocation(C->getLocation()); });
127   JOS.attributeObject("range",
128                       [C, this] { writeSourceRange(C->getSourceRange()); });
129 
130   InnerCommentVisitor::visit(C, FC);
131 }
132 
133 void JSONNodeDumper::Visit(const TemplateArgument &TA, SourceRange R,
134                            const Decl *From, StringRef Label) {
135   JOS.attribute("kind", "TemplateArgument");
136   if (R.isValid())
137     JOS.attributeObject("range", [R, this] { writeSourceRange(R); });
138 
139   if (From)
140     JOS.attribute(Label.empty() ? "fromDecl" : Label, createBareDeclRef(From));
141 
142   InnerTemplateArgVisitor::Visit(TA);
143 }
144 
145 void JSONNodeDumper::Visit(const CXXCtorInitializer *Init) {
146   JOS.attribute("kind", "CXXCtorInitializer");
147   if (Init->isAnyMemberInitializer())
148     JOS.attribute("anyInit", createBareDeclRef(Init->getAnyMember()));
149   else if (Init->isBaseInitializer())
150     JOS.attribute("baseInit",
151                   createQualType(QualType(Init->getBaseClass(), 0)));
152   else if (Init->isDelegatingInitializer())
153     JOS.attribute("delegatingInit",
154                   createQualType(Init->getTypeSourceInfo()->getType()));
155   else
156     llvm_unreachable("Unknown initializer type");
157 }
158 
159 void JSONNodeDumper::Visit(const OMPClause *C) {}
160 
161 void JSONNodeDumper::Visit(const BlockDecl::Capture &C) {
162   JOS.attribute("kind", "Capture");
163   attributeOnlyIfTrue("byref", C.isByRef());
164   attributeOnlyIfTrue("nested", C.isNested());
165   if (C.getVariable())
166     JOS.attribute("var", createBareDeclRef(C.getVariable()));
167 }
168 
169 void JSONNodeDumper::Visit(const GenericSelectionExpr::ConstAssociation &A) {
170   JOS.attribute("associationKind", A.getTypeSourceInfo() ? "case" : "default");
171   attributeOnlyIfTrue("selected", A.isSelected());
172 }
173 
174 void JSONNodeDumper::writeBareSourceLocation(SourceLocation Loc,
175                                              bool IsSpelling) {
176   PresumedLoc Presumed = SM.getPresumedLoc(Loc);
177   unsigned ActualLine = IsSpelling ? SM.getSpellingLineNumber(Loc)
178                                    : SM.getExpansionLineNumber(Loc);
179   if (Presumed.isValid()) {
180     if (LastLocFilename != Presumed.getFilename()) {
181       JOS.attribute("file", Presumed.getFilename());
182       JOS.attribute("line", ActualLine);
183     } else if (LastLocLine != ActualLine)
184       JOS.attribute("line", ActualLine);
185 
186     unsigned PresumedLine = Presumed.getLine();
187     if (ActualLine != PresumedLine && LastLocPresumedLine != PresumedLine)
188       JOS.attribute("presumedLine", PresumedLine);
189 
190     JOS.attribute("col", Presumed.getColumn());
191     JOS.attribute("tokLen",
192                   Lexer::MeasureTokenLength(Loc, SM, Ctx.getLangOpts()));
193     LastLocFilename = Presumed.getFilename();
194     LastLocPresumedLine = PresumedLine;
195     LastLocLine = ActualLine;
196   }
197 }
198 
199 void JSONNodeDumper::writeSourceLocation(SourceLocation Loc) {
200   SourceLocation Spelling = SM.getSpellingLoc(Loc);
201   SourceLocation Expansion = SM.getExpansionLoc(Loc);
202 
203   if (Expansion != Spelling) {
204     // If the expansion and the spelling are different, output subobjects
205     // describing both locations.
206     JOS.attributeObject("spellingLoc", [Spelling, this] {
207       writeBareSourceLocation(Spelling, /*IsSpelling*/ true);
208     });
209     JOS.attributeObject("expansionLoc", [Expansion, Loc, this] {
210       writeBareSourceLocation(Expansion, /*IsSpelling*/ false);
211       // If there is a macro expansion, add extra information if the interesting
212       // bit is the macro arg expansion.
213       if (SM.isMacroArgExpansion(Loc))
214         JOS.attribute("isMacroArgExpansion", true);
215     });
216   } else
217     writeBareSourceLocation(Spelling, /*IsSpelling*/ true);
218 }
219 
220 void JSONNodeDumper::writeSourceRange(SourceRange R) {
221   JOS.attributeObject("begin",
222                       [R, this] { writeSourceLocation(R.getBegin()); });
223   JOS.attributeObject("end", [R, this] { writeSourceLocation(R.getEnd()); });
224 }
225 
226 std::string JSONNodeDumper::createPointerRepresentation(const void *Ptr) {
227   // Because JSON stores integer values as signed 64-bit integers, trying to
228   // represent them as such makes for very ugly pointer values in the resulting
229   // output. Instead, we convert the value to hex and treat it as a string.
230   return "0x" + llvm::utohexstr(reinterpret_cast<uint64_t>(Ptr), true);
231 }
232 
233 llvm::json::Object JSONNodeDumper::createQualType(QualType QT, bool Desugar) {
234   SplitQualType SQT = QT.split();
235   llvm::json::Object Ret{{"qualType", QualType::getAsString(SQT, PrintPolicy)}};
236 
237   if (Desugar && !QT.isNull()) {
238     SplitQualType DSQT = QT.getSplitDesugaredType();
239     if (DSQT != SQT)
240       Ret["desugaredQualType"] = QualType::getAsString(DSQT, PrintPolicy);
241   }
242   return Ret;
243 }
244 
245 void JSONNodeDumper::writeBareDeclRef(const Decl *D) {
246   JOS.attribute("id", createPointerRepresentation(D));
247   if (!D)
248     return;
249 
250   JOS.attribute("kind", (llvm::Twine(D->getDeclKindName()) + "Decl").str());
251   if (const auto *ND = dyn_cast<NamedDecl>(D))
252     JOS.attribute("name", ND->getDeclName().getAsString());
253   if (const auto *VD = dyn_cast<ValueDecl>(D))
254     JOS.attribute("type", createQualType(VD->getType()));
255 }
256 
257 llvm::json::Object JSONNodeDumper::createBareDeclRef(const Decl *D) {
258   llvm::json::Object Ret{{"id", createPointerRepresentation(D)}};
259   if (!D)
260     return Ret;
261 
262   Ret["kind"] = (llvm::Twine(D->getDeclKindName()) + "Decl").str();
263   if (const auto *ND = dyn_cast<NamedDecl>(D))
264     Ret["name"] = ND->getDeclName().getAsString();
265   if (const auto *VD = dyn_cast<ValueDecl>(D))
266     Ret["type"] = createQualType(VD->getType());
267   return Ret;
268 }
269 
270 llvm::json::Array JSONNodeDumper::createCastPath(const CastExpr *C) {
271   llvm::json::Array Ret;
272   if (C->path_empty())
273     return Ret;
274 
275   for (auto I = C->path_begin(), E = C->path_end(); I != E; ++I) {
276     const CXXBaseSpecifier *Base = *I;
277     const auto *RD =
278         cast<CXXRecordDecl>(Base->getType()->getAs<RecordType>()->getDecl());
279 
280     llvm::json::Object Val{{"name", RD->getName()}};
281     if (Base->isVirtual())
282       Val["isVirtual"] = true;
283     Ret.push_back(std::move(Val));
284   }
285   return Ret;
286 }
287 
288 #define FIELD2(Name, Flag)  if (RD->Flag()) Ret[Name] = true
289 #define FIELD1(Flag)        FIELD2(#Flag, Flag)
290 
291 static llvm::json::Object
292 createDefaultConstructorDefinitionData(const CXXRecordDecl *RD) {
293   llvm::json::Object Ret;
294 
295   FIELD2("exists", hasDefaultConstructor);
296   FIELD2("trivial", hasTrivialDefaultConstructor);
297   FIELD2("nonTrivial", hasNonTrivialDefaultConstructor);
298   FIELD2("userProvided", hasUserProvidedDefaultConstructor);
299   FIELD2("isConstexpr", hasConstexprDefaultConstructor);
300   FIELD2("needsImplicit", needsImplicitDefaultConstructor);
301   FIELD2("defaultedIsConstexpr", defaultedDefaultConstructorIsConstexpr);
302 
303   return Ret;
304 }
305 
306 static llvm::json::Object
307 createCopyConstructorDefinitionData(const CXXRecordDecl *RD) {
308   llvm::json::Object Ret;
309 
310   FIELD2("simple", hasSimpleCopyConstructor);
311   FIELD2("trivial", hasTrivialCopyConstructor);
312   FIELD2("nonTrivial", hasNonTrivialCopyConstructor);
313   FIELD2("userDeclared", hasUserDeclaredCopyConstructor);
314   FIELD2("hasConstParam", hasCopyConstructorWithConstParam);
315   FIELD2("implicitHasConstParam", implicitCopyConstructorHasConstParam);
316   FIELD2("needsImplicit", needsImplicitCopyConstructor);
317   FIELD2("needsOverloadResolution", needsOverloadResolutionForCopyConstructor);
318   if (!RD->needsOverloadResolutionForCopyConstructor())
319     FIELD2("defaultedIsDeleted", defaultedCopyConstructorIsDeleted);
320 
321   return Ret;
322 }
323 
324 static llvm::json::Object
325 createMoveConstructorDefinitionData(const CXXRecordDecl *RD) {
326   llvm::json::Object Ret;
327 
328   FIELD2("exists", hasMoveConstructor);
329   FIELD2("simple", hasSimpleMoveConstructor);
330   FIELD2("trivial", hasTrivialMoveConstructor);
331   FIELD2("nonTrivial", hasNonTrivialMoveConstructor);
332   FIELD2("userDeclared", hasUserDeclaredMoveConstructor);
333   FIELD2("needsImplicit", needsImplicitMoveConstructor);
334   FIELD2("needsOverloadResolution", needsOverloadResolutionForMoveConstructor);
335   if (!RD->needsOverloadResolutionForMoveConstructor())
336     FIELD2("defaultedIsDeleted", defaultedMoveConstructorIsDeleted);
337 
338   return Ret;
339 }
340 
341 static llvm::json::Object
342 createCopyAssignmentDefinitionData(const CXXRecordDecl *RD) {
343   llvm::json::Object Ret;
344 
345   FIELD2("trivial", hasTrivialCopyAssignment);
346   FIELD2("nonTrivial", hasNonTrivialCopyAssignment);
347   FIELD2("hasConstParam", hasCopyAssignmentWithConstParam);
348   FIELD2("implicitHasConstParam", implicitCopyAssignmentHasConstParam);
349   FIELD2("userDeclared", hasUserDeclaredCopyAssignment);
350   FIELD2("needsImplicit", needsImplicitCopyAssignment);
351   FIELD2("needsOverloadResolution", needsOverloadResolutionForCopyAssignment);
352 
353   return Ret;
354 }
355 
356 static llvm::json::Object
357 createMoveAssignmentDefinitionData(const CXXRecordDecl *RD) {
358   llvm::json::Object Ret;
359 
360   FIELD2("exists", hasMoveAssignment);
361   FIELD2("simple", hasSimpleMoveAssignment);
362   FIELD2("trivial", hasTrivialMoveAssignment);
363   FIELD2("nonTrivial", hasNonTrivialMoveAssignment);
364   FIELD2("userDeclared", hasUserDeclaredMoveAssignment);
365   FIELD2("needsImplicit", needsImplicitMoveAssignment);
366   FIELD2("needsOverloadResolution", needsOverloadResolutionForMoveAssignment);
367 
368   return Ret;
369 }
370 
371 static llvm::json::Object
372 createDestructorDefinitionData(const CXXRecordDecl *RD) {
373   llvm::json::Object Ret;
374 
375   FIELD2("simple", hasSimpleDestructor);
376   FIELD2("irrelevant", hasIrrelevantDestructor);
377   FIELD2("trivial", hasTrivialDestructor);
378   FIELD2("nonTrivial", hasNonTrivialDestructor);
379   FIELD2("userDeclared", hasUserDeclaredDestructor);
380   FIELD2("needsImplicit", needsImplicitDestructor);
381   FIELD2("needsOverloadResolution", needsOverloadResolutionForDestructor);
382   if (!RD->needsOverloadResolutionForDestructor())
383     FIELD2("defaultedIsDeleted", defaultedDestructorIsDeleted);
384 
385   return Ret;
386 }
387 
388 llvm::json::Object
389 JSONNodeDumper::createCXXRecordDefinitionData(const CXXRecordDecl *RD) {
390   llvm::json::Object Ret;
391 
392   // This data is common to all C++ classes.
393   FIELD1(isGenericLambda);
394   FIELD1(isLambda);
395   FIELD1(isEmpty);
396   FIELD1(isAggregate);
397   FIELD1(isStandardLayout);
398   FIELD1(isTriviallyCopyable);
399   FIELD1(isPOD);
400   FIELD1(isTrivial);
401   FIELD1(isPolymorphic);
402   FIELD1(isAbstract);
403   FIELD1(isLiteral);
404   FIELD1(canPassInRegisters);
405   FIELD1(hasUserDeclaredConstructor);
406   FIELD1(hasConstexprNonCopyMoveConstructor);
407   FIELD1(hasMutableFields);
408   FIELD1(hasVariantMembers);
409   FIELD2("canConstDefaultInit", allowConstDefaultInit);
410 
411   Ret["defaultCtor"] = createDefaultConstructorDefinitionData(RD);
412   Ret["copyCtor"] = createCopyConstructorDefinitionData(RD);
413   Ret["moveCtor"] = createMoveConstructorDefinitionData(RD);
414   Ret["copyAssign"] = createCopyAssignmentDefinitionData(RD);
415   Ret["moveAssign"] = createMoveAssignmentDefinitionData(RD);
416   Ret["dtor"] = createDestructorDefinitionData(RD);
417 
418   return Ret;
419 }
420 
421 #undef FIELD1
422 #undef FIELD2
423 
424 std::string JSONNodeDumper::createAccessSpecifier(AccessSpecifier AS) {
425   switch (AS) {
426   case AS_none: return "none";
427   case AS_private: return "private";
428   case AS_protected: return "protected";
429   case AS_public: return "public";
430   }
431   llvm_unreachable("Unknown access specifier");
432 }
433 
434 llvm::json::Object
435 JSONNodeDumper::createCXXBaseSpecifier(const CXXBaseSpecifier &BS) {
436   llvm::json::Object Ret;
437 
438   Ret["type"] = createQualType(BS.getType());
439   Ret["access"] = createAccessSpecifier(BS.getAccessSpecifier());
440   Ret["writtenAccess"] =
441       createAccessSpecifier(BS.getAccessSpecifierAsWritten());
442   if (BS.isVirtual())
443     Ret["isVirtual"] = true;
444   if (BS.isPackExpansion())
445     Ret["isPackExpansion"] = true;
446 
447   return Ret;
448 }
449 
450 void JSONNodeDumper::VisitTypedefType(const TypedefType *TT) {
451   JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
452 }
453 
454 void JSONNodeDumper::VisitFunctionType(const FunctionType *T) {
455   FunctionType::ExtInfo E = T->getExtInfo();
456   attributeOnlyIfTrue("noreturn", E.getNoReturn());
457   attributeOnlyIfTrue("producesResult", E.getProducesResult());
458   if (E.getHasRegParm())
459     JOS.attribute("regParm", E.getRegParm());
460   JOS.attribute("cc", FunctionType::getNameForCallConv(E.getCC()));
461 }
462 
463 void JSONNodeDumper::VisitFunctionProtoType(const FunctionProtoType *T) {
464   FunctionProtoType::ExtProtoInfo E = T->getExtProtoInfo();
465   attributeOnlyIfTrue("trailingReturn", E.HasTrailingReturn);
466   attributeOnlyIfTrue("const", T->isConst());
467   attributeOnlyIfTrue("volatile", T->isVolatile());
468   attributeOnlyIfTrue("restrict", T->isRestrict());
469   attributeOnlyIfTrue("variadic", E.Variadic);
470   switch (E.RefQualifier) {
471   case RQ_LValue: JOS.attribute("refQualifier", "&"); break;
472   case RQ_RValue: JOS.attribute("refQualifier", "&&"); break;
473   case RQ_None: break;
474   }
475   switch (E.ExceptionSpec.Type) {
476   case EST_DynamicNone:
477   case EST_Dynamic: {
478     JOS.attribute("exceptionSpec", "throw");
479     llvm::json::Array Types;
480     for (QualType QT : E.ExceptionSpec.Exceptions)
481       Types.push_back(createQualType(QT));
482     JOS.attribute("exceptionTypes", std::move(Types));
483   } break;
484   case EST_MSAny:
485     JOS.attribute("exceptionSpec", "throw");
486     JOS.attribute("throwsAny", true);
487     break;
488   case EST_BasicNoexcept:
489     JOS.attribute("exceptionSpec", "noexcept");
490     break;
491   case EST_NoexceptTrue:
492   case EST_NoexceptFalse:
493     JOS.attribute("exceptionSpec", "noexcept");
494     JOS.attribute("conditionEvaluatesTo",
495                 E.ExceptionSpec.Type == EST_NoexceptTrue);
496     //JOS.attributeWithCall("exceptionSpecExpr",
497     //                    [this, E]() { Visit(E.ExceptionSpec.NoexceptExpr); });
498     break;
499   case EST_NoThrow:
500     JOS.attribute("exceptionSpec", "nothrow");
501     break;
502   // FIXME: I cannot find a way to trigger these cases while dumping the AST. I
503   // suspect you can only run into them when executing an AST dump from within
504   // the debugger, which is not a use case we worry about for the JSON dumping
505   // feature.
506   case EST_DependentNoexcept:
507   case EST_Unevaluated:
508   case EST_Uninstantiated:
509   case EST_Unparsed:
510   case EST_None: break;
511   }
512   VisitFunctionType(T);
513 }
514 
515 void JSONNodeDumper::VisitRValueReferenceType(const ReferenceType *RT) {
516   attributeOnlyIfTrue("spelledAsLValue", RT->isSpelledAsLValue());
517 }
518 
519 void JSONNodeDumper::VisitArrayType(const ArrayType *AT) {
520   switch (AT->getSizeModifier()) {
521   case ArrayType::Star:
522     JOS.attribute("sizeModifier", "*");
523     break;
524   case ArrayType::Static:
525     JOS.attribute("sizeModifier", "static");
526     break;
527   case ArrayType::Normal:
528     break;
529   }
530 
531   std::string Str = AT->getIndexTypeQualifiers().getAsString();
532   if (!Str.empty())
533     JOS.attribute("indexTypeQualifiers", Str);
534 }
535 
536 void JSONNodeDumper::VisitConstantArrayType(const ConstantArrayType *CAT) {
537   // FIXME: this should use ZExt instead of SExt, but JSON doesn't allow a
538   // narrowing conversion to int64_t so it cannot be expressed.
539   JOS.attribute("size", CAT->getSize().getSExtValue());
540   VisitArrayType(CAT);
541 }
542 
543 void JSONNodeDumper::VisitDependentSizedExtVectorType(
544     const DependentSizedExtVectorType *VT) {
545   JOS.attributeObject(
546       "attrLoc", [VT, this] { writeSourceLocation(VT->getAttributeLoc()); });
547 }
548 
549 void JSONNodeDumper::VisitVectorType(const VectorType *VT) {
550   JOS.attribute("numElements", VT->getNumElements());
551   switch (VT->getVectorKind()) {
552   case VectorType::GenericVector:
553     break;
554   case VectorType::AltiVecVector:
555     JOS.attribute("vectorKind", "altivec");
556     break;
557   case VectorType::AltiVecPixel:
558     JOS.attribute("vectorKind", "altivec pixel");
559     break;
560   case VectorType::AltiVecBool:
561     JOS.attribute("vectorKind", "altivec bool");
562     break;
563   case VectorType::NeonVector:
564     JOS.attribute("vectorKind", "neon");
565     break;
566   case VectorType::NeonPolyVector:
567     JOS.attribute("vectorKind", "neon poly");
568     break;
569   }
570 }
571 
572 void JSONNodeDumper::VisitUnresolvedUsingType(const UnresolvedUsingType *UUT) {
573   JOS.attribute("decl", createBareDeclRef(UUT->getDecl()));
574 }
575 
576 void JSONNodeDumper::VisitUnaryTransformType(const UnaryTransformType *UTT) {
577   switch (UTT->getUTTKind()) {
578   case UnaryTransformType::EnumUnderlyingType:
579     JOS.attribute("transformKind", "underlying_type");
580     break;
581   }
582 }
583 
584 void JSONNodeDumper::VisitTagType(const TagType *TT) {
585   JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
586 }
587 
588 void JSONNodeDumper::VisitTemplateTypeParmType(
589     const TemplateTypeParmType *TTPT) {
590   JOS.attribute("depth", TTPT->getDepth());
591   JOS.attribute("index", TTPT->getIndex());
592   attributeOnlyIfTrue("isPack", TTPT->isParameterPack());
593   JOS.attribute("decl", createBareDeclRef(TTPT->getDecl()));
594 }
595 
596 void JSONNodeDumper::VisitAutoType(const AutoType *AT) {
597   JOS.attribute("undeduced", !AT->isDeduced());
598   switch (AT->getKeyword()) {
599   case AutoTypeKeyword::Auto:
600     JOS.attribute("typeKeyword", "auto");
601     break;
602   case AutoTypeKeyword::DecltypeAuto:
603     JOS.attribute("typeKeyword", "decltype(auto)");
604     break;
605   case AutoTypeKeyword::GNUAutoType:
606     JOS.attribute("typeKeyword", "__auto_type");
607     break;
608   }
609 }
610 
611 void JSONNodeDumper::VisitTemplateSpecializationType(
612     const TemplateSpecializationType *TST) {
613   attributeOnlyIfTrue("isAlias", TST->isTypeAlias());
614 
615   std::string Str;
616   llvm::raw_string_ostream OS(Str);
617   TST->getTemplateName().print(OS, PrintPolicy);
618   JOS.attribute("templateName", OS.str());
619 }
620 
621 void JSONNodeDumper::VisitInjectedClassNameType(
622     const InjectedClassNameType *ICNT) {
623   JOS.attribute("decl", createBareDeclRef(ICNT->getDecl()));
624 }
625 
626 void JSONNodeDumper::VisitObjCInterfaceType(const ObjCInterfaceType *OIT) {
627   JOS.attribute("decl", createBareDeclRef(OIT->getDecl()));
628 }
629 
630 void JSONNodeDumper::VisitPackExpansionType(const PackExpansionType *PET) {
631   if (llvm::Optional<unsigned> N = PET->getNumExpansions())
632     JOS.attribute("numExpansions", *N);
633 }
634 
635 void JSONNodeDumper::VisitElaboratedType(const ElaboratedType *ET) {
636   if (const NestedNameSpecifier *NNS = ET->getQualifier()) {
637     std::string Str;
638     llvm::raw_string_ostream OS(Str);
639     NNS->print(OS, PrintPolicy, /*ResolveTemplateArgs*/ true);
640     JOS.attribute("qualifier", OS.str());
641   }
642   if (const TagDecl *TD = ET->getOwnedTagDecl())
643     JOS.attribute("ownedTagDecl", createBareDeclRef(TD));
644 }
645 
646 void JSONNodeDumper::VisitMacroQualifiedType(const MacroQualifiedType *MQT) {
647   JOS.attribute("macroName", MQT->getMacroIdentifier()->getName());
648 }
649 
650 void JSONNodeDumper::VisitMemberPointerType(const MemberPointerType *MPT) {
651   attributeOnlyIfTrue("isData", MPT->isMemberDataPointer());
652   attributeOnlyIfTrue("isFunction", MPT->isMemberFunctionPointer());
653 }
654 
655 void JSONNodeDumper::VisitNamedDecl(const NamedDecl *ND) {
656   if (ND && ND->getDeclName())
657     JOS.attribute("name", ND->getNameAsString());
658 }
659 
660 void JSONNodeDumper::VisitTypedefDecl(const TypedefDecl *TD) {
661   VisitNamedDecl(TD);
662   JOS.attribute("type", createQualType(TD->getUnderlyingType()));
663 }
664 
665 void JSONNodeDumper::VisitTypeAliasDecl(const TypeAliasDecl *TAD) {
666   VisitNamedDecl(TAD);
667   JOS.attribute("type", createQualType(TAD->getUnderlyingType()));
668 }
669 
670 void JSONNodeDumper::VisitNamespaceDecl(const NamespaceDecl *ND) {
671   VisitNamedDecl(ND);
672   attributeOnlyIfTrue("isInline", ND->isInline());
673   if (!ND->isOriginalNamespace())
674     JOS.attribute("originalNamespace",
675                   createBareDeclRef(ND->getOriginalNamespace()));
676 }
677 
678 void JSONNodeDumper::VisitUsingDirectiveDecl(const UsingDirectiveDecl *UDD) {
679   JOS.attribute("nominatedNamespace",
680                 createBareDeclRef(UDD->getNominatedNamespace()));
681 }
682 
683 void JSONNodeDumper::VisitNamespaceAliasDecl(const NamespaceAliasDecl *NAD) {
684   VisitNamedDecl(NAD);
685   JOS.attribute("aliasedNamespace",
686                 createBareDeclRef(NAD->getAliasedNamespace()));
687 }
688 
689 void JSONNodeDumper::VisitUsingDecl(const UsingDecl *UD) {
690   std::string Name;
691   if (const NestedNameSpecifier *NNS = UD->getQualifier()) {
692     llvm::raw_string_ostream SOS(Name);
693     NNS->print(SOS, UD->getASTContext().getPrintingPolicy());
694   }
695   Name += UD->getNameAsString();
696   JOS.attribute("name", Name);
697 }
698 
699 void JSONNodeDumper::VisitUsingShadowDecl(const UsingShadowDecl *USD) {
700   JOS.attribute("target", createBareDeclRef(USD->getTargetDecl()));
701 }
702 
703 void JSONNodeDumper::VisitVarDecl(const VarDecl *VD) {
704   VisitNamedDecl(VD);
705   JOS.attribute("type", createQualType(VD->getType()));
706 
707   StorageClass SC = VD->getStorageClass();
708   if (SC != SC_None)
709     JOS.attribute("storageClass", VarDecl::getStorageClassSpecifierString(SC));
710   switch (VD->getTLSKind()) {
711   case VarDecl::TLS_Dynamic: JOS.attribute("tls", "dynamic"); break;
712   case VarDecl::TLS_Static: JOS.attribute("tls", "static"); break;
713   case VarDecl::TLS_None: break;
714   }
715   attributeOnlyIfTrue("nrvo", VD->isNRVOVariable());
716   attributeOnlyIfTrue("inline", VD->isInline());
717   attributeOnlyIfTrue("constexpr", VD->isConstexpr());
718   attributeOnlyIfTrue("modulePrivate", VD->isModulePrivate());
719   if (VD->hasInit()) {
720     switch (VD->getInitStyle()) {
721     case VarDecl::CInit: JOS.attribute("init", "c");  break;
722     case VarDecl::CallInit: JOS.attribute("init", "call"); break;
723     case VarDecl::ListInit: JOS.attribute("init", "list"); break;
724     }
725   }
726   attributeOnlyIfTrue("isParameterPack", VD->isParameterPack());
727 }
728 
729 void JSONNodeDumper::VisitFieldDecl(const FieldDecl *FD) {
730   VisitNamedDecl(FD);
731   JOS.attribute("type", createQualType(FD->getType()));
732   attributeOnlyIfTrue("mutable", FD->isMutable());
733   attributeOnlyIfTrue("modulePrivate", FD->isModulePrivate());
734   attributeOnlyIfTrue("isBitfield", FD->isBitField());
735   attributeOnlyIfTrue("hasInClassInitializer", FD->hasInClassInitializer());
736 }
737 
738 void JSONNodeDumper::VisitFunctionDecl(const FunctionDecl *FD) {
739   VisitNamedDecl(FD);
740   JOS.attribute("type", createQualType(FD->getType()));
741   StorageClass SC = FD->getStorageClass();
742   if (SC != SC_None)
743     JOS.attribute("storageClass", VarDecl::getStorageClassSpecifierString(SC));
744   attributeOnlyIfTrue("inline", FD->isInlineSpecified());
745   attributeOnlyIfTrue("virtual", FD->isVirtualAsWritten());
746   attributeOnlyIfTrue("pure", FD->isPure());
747   attributeOnlyIfTrue("explicitlyDeleted", FD->isDeletedAsWritten());
748   attributeOnlyIfTrue("constexpr", FD->isConstexpr());
749   attributeOnlyIfTrue("variadic", FD->isVariadic());
750 
751   if (FD->isDefaulted())
752     JOS.attribute("explicitlyDefaulted",
753                   FD->isDeleted() ? "deleted" : "default");
754 }
755 
756 void JSONNodeDumper::VisitEnumDecl(const EnumDecl *ED) {
757   VisitNamedDecl(ED);
758   if (ED->isFixed())
759     JOS.attribute("fixedUnderlyingType", createQualType(ED->getIntegerType()));
760   if (ED->isScoped())
761     JOS.attribute("scopedEnumTag",
762                   ED->isScopedUsingClassTag() ? "class" : "struct");
763 }
764 void JSONNodeDumper::VisitEnumConstantDecl(const EnumConstantDecl *ECD) {
765   VisitNamedDecl(ECD);
766   JOS.attribute("type", createQualType(ECD->getType()));
767 }
768 
769 void JSONNodeDumper::VisitRecordDecl(const RecordDecl *RD) {
770   VisitNamedDecl(RD);
771   JOS.attribute("tagUsed", RD->getKindName());
772   attributeOnlyIfTrue("completeDefinition", RD->isCompleteDefinition());
773 }
774 void JSONNodeDumper::VisitCXXRecordDecl(const CXXRecordDecl *RD) {
775   VisitRecordDecl(RD);
776 
777   // All other information requires a complete definition.
778   if (!RD->isCompleteDefinition())
779     return;
780 
781   JOS.attribute("definitionData", createCXXRecordDefinitionData(RD));
782   if (RD->getNumBases()) {
783     JOS.attributeArray("bases", [this, RD] {
784       for (const auto &Spec : RD->bases())
785         JOS.value(createCXXBaseSpecifier(Spec));
786     });
787   }
788 }
789 
790 void JSONNodeDumper::VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D) {
791   VisitNamedDecl(D);
792   JOS.attribute("tagUsed", D->wasDeclaredWithTypename() ? "typename" : "class");
793   JOS.attribute("depth", D->getDepth());
794   JOS.attribute("index", D->getIndex());
795   attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
796 
797   if (D->hasDefaultArgument())
798     JOS.attributeObject("defaultArg", [=] {
799       Visit(D->getDefaultArgument(), SourceRange(),
800             D->getDefaultArgStorage().getInheritedFrom(),
801             D->defaultArgumentWasInherited() ? "inherited from" : "previous");
802     });
803 }
804 
805 void JSONNodeDumper::VisitNonTypeTemplateParmDecl(
806     const NonTypeTemplateParmDecl *D) {
807   VisitNamedDecl(D);
808   JOS.attribute("type", createQualType(D->getType()));
809   JOS.attribute("depth", D->getDepth());
810   JOS.attribute("index", D->getIndex());
811   attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
812 
813   if (D->hasDefaultArgument())
814     JOS.attributeObject("defaultArg", [=] {
815       Visit(D->getDefaultArgument(), SourceRange(),
816             D->getDefaultArgStorage().getInheritedFrom(),
817             D->defaultArgumentWasInherited() ? "inherited from" : "previous");
818     });
819 }
820 
821 void JSONNodeDumper::VisitTemplateTemplateParmDecl(
822     const TemplateTemplateParmDecl *D) {
823   VisitNamedDecl(D);
824   JOS.attribute("depth", D->getDepth());
825   JOS.attribute("index", D->getIndex());
826   attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
827 
828   if (D->hasDefaultArgument())
829     JOS.attributeObject("defaultArg", [=] {
830       Visit(D->getDefaultArgument().getArgument(),
831             D->getDefaultArgStorage().getInheritedFrom()->getSourceRange(),
832             D->getDefaultArgStorage().getInheritedFrom(),
833             D->defaultArgumentWasInherited() ? "inherited from" : "previous");
834     });
835 }
836 
837 void JSONNodeDumper::VisitLinkageSpecDecl(const LinkageSpecDecl *LSD) {
838   StringRef Lang;
839   switch (LSD->getLanguage()) {
840   case LinkageSpecDecl::lang_c: Lang = "C"; break;
841   case LinkageSpecDecl::lang_cxx: Lang = "C++"; break;
842   }
843   JOS.attribute("language", Lang);
844   attributeOnlyIfTrue("hasBraces", LSD->hasBraces());
845 }
846 
847 void JSONNodeDumper::VisitAccessSpecDecl(const AccessSpecDecl *ASD) {
848   JOS.attribute("access", createAccessSpecifier(ASD->getAccess()));
849 }
850 
851 void JSONNodeDumper::VisitFriendDecl(const FriendDecl *FD) {
852   if (const TypeSourceInfo *T = FD->getFriendType())
853     JOS.attribute("type", createQualType(T->getType()));
854 }
855 
856 void JSONNodeDumper::VisitObjCIvarDecl(const ObjCIvarDecl *D) {
857   VisitNamedDecl(D);
858   JOS.attribute("type", createQualType(D->getType()));
859   attributeOnlyIfTrue("synthesized", D->getSynthesize());
860   switch (D->getAccessControl()) {
861   case ObjCIvarDecl::None: JOS.attribute("access", "none"); break;
862   case ObjCIvarDecl::Private: JOS.attribute("access", "private"); break;
863   case ObjCIvarDecl::Protected: JOS.attribute("access", "protected"); break;
864   case ObjCIvarDecl::Public: JOS.attribute("access", "public"); break;
865   case ObjCIvarDecl::Package: JOS.attribute("access", "package"); break;
866   }
867 }
868 
869 void JSONNodeDumper::VisitObjCMethodDecl(const ObjCMethodDecl *D) {
870   VisitNamedDecl(D);
871   JOS.attribute("returnType", createQualType(D->getReturnType()));
872   JOS.attribute("instance", D->isInstanceMethod());
873   attributeOnlyIfTrue("variadic", D->isVariadic());
874 }
875 
876 void JSONNodeDumper::VisitObjCTypeParamDecl(const ObjCTypeParamDecl *D) {
877   VisitNamedDecl(D);
878   JOS.attribute("type", createQualType(D->getUnderlyingType()));
879   attributeOnlyIfTrue("bounded", D->hasExplicitBound());
880   switch (D->getVariance()) {
881   case ObjCTypeParamVariance::Invariant:
882     break;
883   case ObjCTypeParamVariance::Covariant:
884     JOS.attribute("variance", "covariant");
885     break;
886   case ObjCTypeParamVariance::Contravariant:
887     JOS.attribute("variance", "contravariant");
888     break;
889   }
890 }
891 
892 void JSONNodeDumper::VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
893   VisitNamedDecl(D);
894   JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
895   JOS.attribute("implementation", createBareDeclRef(D->getImplementation()));
896 
897   llvm::json::Array Protocols;
898   for (const auto* P : D->protocols())
899     Protocols.push_back(createBareDeclRef(P));
900   if (!Protocols.empty())
901     JOS.attribute("protocols", std::move(Protocols));
902 }
903 
904 void JSONNodeDumper::VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
905   VisitNamedDecl(D);
906   JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
907   JOS.attribute("categoryDecl", createBareDeclRef(D->getCategoryDecl()));
908 }
909 
910 void JSONNodeDumper::VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
911   VisitNamedDecl(D);
912 
913   llvm::json::Array Protocols;
914   for (const auto *P : D->protocols())
915     Protocols.push_back(createBareDeclRef(P));
916   if (!Protocols.empty())
917     JOS.attribute("protocols", std::move(Protocols));
918 }
919 
920 void JSONNodeDumper::VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
921   VisitNamedDecl(D);
922   JOS.attribute("super", createBareDeclRef(D->getSuperClass()));
923   JOS.attribute("implementation", createBareDeclRef(D->getImplementation()));
924 
925   llvm::json::Array Protocols;
926   for (const auto* P : D->protocols())
927     Protocols.push_back(createBareDeclRef(P));
928   if (!Protocols.empty())
929     JOS.attribute("protocols", std::move(Protocols));
930 }
931 
932 void JSONNodeDumper::VisitObjCImplementationDecl(
933     const ObjCImplementationDecl *D) {
934   VisitNamedDecl(D);
935   JOS.attribute("super", createBareDeclRef(D->getSuperClass()));
936   JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
937 }
938 
939 void JSONNodeDumper::VisitObjCCompatibleAliasDecl(
940     const ObjCCompatibleAliasDecl *D) {
941   VisitNamedDecl(D);
942   JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
943 }
944 
945 void JSONNodeDumper::VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
946   VisitNamedDecl(D);
947   JOS.attribute("type", createQualType(D->getType()));
948 
949   switch (D->getPropertyImplementation()) {
950   case ObjCPropertyDecl::None: break;
951   case ObjCPropertyDecl::Required: JOS.attribute("control", "required"); break;
952   case ObjCPropertyDecl::Optional: JOS.attribute("control", "optional"); break;
953   }
954 
955   ObjCPropertyDecl::PropertyAttributeKind Attrs = D->getPropertyAttributes();
956   if (Attrs != ObjCPropertyDecl::OBJC_PR_noattr) {
957     if (Attrs & ObjCPropertyDecl::OBJC_PR_getter)
958       JOS.attribute("getter", createBareDeclRef(D->getGetterMethodDecl()));
959     if (Attrs & ObjCPropertyDecl::OBJC_PR_setter)
960       JOS.attribute("setter", createBareDeclRef(D->getSetterMethodDecl()));
961     attributeOnlyIfTrue("readonly", Attrs & ObjCPropertyDecl::OBJC_PR_readonly);
962     attributeOnlyIfTrue("assign", Attrs & ObjCPropertyDecl::OBJC_PR_assign);
963     attributeOnlyIfTrue("readwrite",
964                         Attrs & ObjCPropertyDecl::OBJC_PR_readwrite);
965     attributeOnlyIfTrue("retain", Attrs & ObjCPropertyDecl::OBJC_PR_retain);
966     attributeOnlyIfTrue("copy", Attrs & ObjCPropertyDecl::OBJC_PR_copy);
967     attributeOnlyIfTrue("nonatomic",
968                         Attrs & ObjCPropertyDecl::OBJC_PR_nonatomic);
969     attributeOnlyIfTrue("atomic", Attrs & ObjCPropertyDecl::OBJC_PR_atomic);
970     attributeOnlyIfTrue("weak", Attrs & ObjCPropertyDecl::OBJC_PR_weak);
971     attributeOnlyIfTrue("strong", Attrs & ObjCPropertyDecl::OBJC_PR_strong);
972     attributeOnlyIfTrue("unsafe_unretained",
973                         Attrs & ObjCPropertyDecl::OBJC_PR_unsafe_unretained);
974     attributeOnlyIfTrue("class", Attrs & ObjCPropertyDecl::OBJC_PR_class);
975     attributeOnlyIfTrue("nullability",
976                         Attrs & ObjCPropertyDecl::OBJC_PR_nullability);
977     attributeOnlyIfTrue("null_resettable",
978                         Attrs & ObjCPropertyDecl::OBJC_PR_null_resettable);
979   }
980 }
981 
982 void JSONNodeDumper::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
983   VisitNamedDecl(D->getPropertyDecl());
984   JOS.attribute("implKind", D->getPropertyImplementation() ==
985                                     ObjCPropertyImplDecl::Synthesize
986                                 ? "synthesize"
987                                 : "dynamic");
988   JOS.attribute("propertyDecl", createBareDeclRef(D->getPropertyDecl()));
989   JOS.attribute("ivarDecl", createBareDeclRef(D->getPropertyIvarDecl()));
990 }
991 
992 void JSONNodeDumper::VisitBlockDecl(const BlockDecl *D) {
993   attributeOnlyIfTrue("variadic", D->isVariadic());
994   attributeOnlyIfTrue("capturesThis", D->capturesCXXThis());
995 }
996 
997 void JSONNodeDumper::VisitObjCEncodeExpr(const ObjCEncodeExpr *OEE) {
998   JOS.attribute("encodedType", createQualType(OEE->getEncodedType()));
999 }
1000 
1001 void JSONNodeDumper::VisitObjCMessageExpr(const ObjCMessageExpr *OME) {
1002   std::string Str;
1003   llvm::raw_string_ostream OS(Str);
1004 
1005   OME->getSelector().print(OS);
1006   JOS.attribute("selector", OS.str());
1007 
1008   switch (OME->getReceiverKind()) {
1009   case ObjCMessageExpr::Instance:
1010     JOS.attribute("receiverKind", "instance");
1011     break;
1012   case ObjCMessageExpr::Class:
1013     JOS.attribute("receiverKind", "class");
1014     JOS.attribute("classType", createQualType(OME->getClassReceiver()));
1015     break;
1016   case ObjCMessageExpr::SuperInstance:
1017     JOS.attribute("receiverKind", "super (instance)");
1018     JOS.attribute("superType", createQualType(OME->getSuperType()));
1019     break;
1020   case ObjCMessageExpr::SuperClass:
1021     JOS.attribute("receiverKind", "super (class)");
1022     JOS.attribute("superType", createQualType(OME->getSuperType()));
1023     break;
1024   }
1025 
1026   QualType CallReturnTy = OME->getCallReturnType(Ctx);
1027   if (OME->getType() != CallReturnTy)
1028     JOS.attribute("callReturnType", createQualType(CallReturnTy));
1029 }
1030 
1031 void JSONNodeDumper::VisitObjCBoxedExpr(const ObjCBoxedExpr *OBE) {
1032   if (const ObjCMethodDecl *MD = OBE->getBoxingMethod()) {
1033     std::string Str;
1034     llvm::raw_string_ostream OS(Str);
1035 
1036     MD->getSelector().print(OS);
1037     JOS.attribute("selector", OS.str());
1038   }
1039 }
1040 
1041 void JSONNodeDumper::VisitObjCSelectorExpr(const ObjCSelectorExpr *OSE) {
1042   std::string Str;
1043   llvm::raw_string_ostream OS(Str);
1044 
1045   OSE->getSelector().print(OS);
1046   JOS.attribute("selector", OS.str());
1047 }
1048 
1049 void JSONNodeDumper::VisitObjCProtocolExpr(const ObjCProtocolExpr *OPE) {
1050   JOS.attribute("protocol", createBareDeclRef(OPE->getProtocol()));
1051 }
1052 
1053 void JSONNodeDumper::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *OPRE) {
1054   if (OPRE->isImplicitProperty()) {
1055     JOS.attribute("propertyKind", "implicit");
1056     if (const ObjCMethodDecl *MD = OPRE->getImplicitPropertyGetter())
1057       JOS.attribute("getter", createBareDeclRef(MD));
1058     if (const ObjCMethodDecl *MD = OPRE->getImplicitPropertySetter())
1059       JOS.attribute("setter", createBareDeclRef(MD));
1060   } else {
1061     JOS.attribute("propertyKind", "explicit");
1062     JOS.attribute("property", createBareDeclRef(OPRE->getExplicitProperty()));
1063   }
1064 
1065   attributeOnlyIfTrue("isSuperReceiver", OPRE->isSuperReceiver());
1066   attributeOnlyIfTrue("isMessagingGetter", OPRE->isMessagingGetter());
1067   attributeOnlyIfTrue("isMessagingSetter", OPRE->isMessagingSetter());
1068 }
1069 
1070 void JSONNodeDumper::VisitObjCSubscriptRefExpr(
1071     const ObjCSubscriptRefExpr *OSRE) {
1072   JOS.attribute("subscriptKind",
1073                 OSRE->isArraySubscriptRefExpr() ? "array" : "dictionary");
1074 
1075   if (const ObjCMethodDecl *MD = OSRE->getAtIndexMethodDecl())
1076     JOS.attribute("getter", createBareDeclRef(MD));
1077   if (const ObjCMethodDecl *MD = OSRE->setAtIndexMethodDecl())
1078     JOS.attribute("setter", createBareDeclRef(MD));
1079 }
1080 
1081 void JSONNodeDumper::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *OIRE) {
1082   JOS.attribute("decl", createBareDeclRef(OIRE->getDecl()));
1083   attributeOnlyIfTrue("isFreeIvar", OIRE->isFreeIvar());
1084   JOS.attribute("isArrow", OIRE->isArrow());
1085 }
1086 
1087 void JSONNodeDumper::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *OBLE) {
1088   JOS.attribute("value", OBLE->getValue() ? "__objc_yes" : "__objc_no");
1089 }
1090 
1091 void JSONNodeDumper::VisitDeclRefExpr(const DeclRefExpr *DRE) {
1092   JOS.attribute("referencedDecl", createBareDeclRef(DRE->getDecl()));
1093   if (DRE->getDecl() != DRE->getFoundDecl())
1094     JOS.attribute("foundReferencedDecl",
1095                   createBareDeclRef(DRE->getFoundDecl()));
1096   switch (DRE->isNonOdrUse()) {
1097   case NOUR_None: break;
1098   case NOUR_Unevaluated: JOS.attribute("nonOdrUseReason", "unevaluated"); break;
1099   case NOUR_Constant: JOS.attribute("nonOdrUseReason", "constant"); break;
1100   case NOUR_Discarded: JOS.attribute("nonOdrUseReason", "discarded"); break;
1101   }
1102 }
1103 
1104 void JSONNodeDumper::VisitPredefinedExpr(const PredefinedExpr *PE) {
1105   JOS.attribute("name", PredefinedExpr::getIdentKindName(PE->getIdentKind()));
1106 }
1107 
1108 void JSONNodeDumper::VisitUnaryOperator(const UnaryOperator *UO) {
1109   JOS.attribute("isPostfix", UO->isPostfix());
1110   JOS.attribute("opcode", UnaryOperator::getOpcodeStr(UO->getOpcode()));
1111   if (!UO->canOverflow())
1112     JOS.attribute("canOverflow", false);
1113 }
1114 
1115 void JSONNodeDumper::VisitBinaryOperator(const BinaryOperator *BO) {
1116   JOS.attribute("opcode", BinaryOperator::getOpcodeStr(BO->getOpcode()));
1117 }
1118 
1119 void JSONNodeDumper::VisitCompoundAssignOperator(
1120     const CompoundAssignOperator *CAO) {
1121   VisitBinaryOperator(CAO);
1122   JOS.attribute("computeLHSType", createQualType(CAO->getComputationLHSType()));
1123   JOS.attribute("computeResultType",
1124                 createQualType(CAO->getComputationResultType()));
1125 }
1126 
1127 void JSONNodeDumper::VisitMemberExpr(const MemberExpr *ME) {
1128   // Note, we always write this Boolean field because the information it conveys
1129   // is critical to understanding the AST node.
1130   ValueDecl *VD = ME->getMemberDecl();
1131   JOS.attribute("name", VD && VD->getDeclName() ? VD->getNameAsString() : "");
1132   JOS.attribute("isArrow", ME->isArrow());
1133   JOS.attribute("referencedMemberDecl", createPointerRepresentation(VD));
1134   switch (ME->isNonOdrUse()) {
1135   case NOUR_None: break;
1136   case NOUR_Unevaluated: JOS.attribute("nonOdrUseReason", "unevaluated"); break;
1137   case NOUR_Constant: JOS.attribute("nonOdrUseReason", "constant"); break;
1138   case NOUR_Discarded: JOS.attribute("nonOdrUseReason", "discarded"); break;
1139   }
1140 }
1141 
1142 void JSONNodeDumper::VisitCXXNewExpr(const CXXNewExpr *NE) {
1143   attributeOnlyIfTrue("isGlobal", NE->isGlobalNew());
1144   attributeOnlyIfTrue("isArray", NE->isArray());
1145   attributeOnlyIfTrue("isPlacement", NE->getNumPlacementArgs() != 0);
1146   switch (NE->getInitializationStyle()) {
1147   case CXXNewExpr::NoInit: break;
1148   case CXXNewExpr::CallInit: JOS.attribute("initStyle", "call"); break;
1149   case CXXNewExpr::ListInit: JOS.attribute("initStyle", "list"); break;
1150   }
1151   if (const FunctionDecl *FD = NE->getOperatorNew())
1152     JOS.attribute("operatorNewDecl", createBareDeclRef(FD));
1153   if (const FunctionDecl *FD = NE->getOperatorDelete())
1154     JOS.attribute("operatorDeleteDecl", createBareDeclRef(FD));
1155 }
1156 void JSONNodeDumper::VisitCXXDeleteExpr(const CXXDeleteExpr *DE) {
1157   attributeOnlyIfTrue("isGlobal", DE->isGlobalDelete());
1158   attributeOnlyIfTrue("isArray", DE->isArrayForm());
1159   attributeOnlyIfTrue("isArrayAsWritten", DE->isArrayFormAsWritten());
1160   if (const FunctionDecl *FD = DE->getOperatorDelete())
1161     JOS.attribute("operatorDeleteDecl", createBareDeclRef(FD));
1162 }
1163 
1164 void JSONNodeDumper::VisitCXXThisExpr(const CXXThisExpr *TE) {
1165   attributeOnlyIfTrue("implicit", TE->isImplicit());
1166 }
1167 
1168 void JSONNodeDumper::VisitCastExpr(const CastExpr *CE) {
1169   JOS.attribute("castKind", CE->getCastKindName());
1170   llvm::json::Array Path = createCastPath(CE);
1171   if (!Path.empty())
1172     JOS.attribute("path", std::move(Path));
1173   // FIXME: This may not be useful information as it can be obtusely gleaned
1174   // from the inner[] array.
1175   if (const NamedDecl *ND = CE->getConversionFunction())
1176     JOS.attribute("conversionFunc", createBareDeclRef(ND));
1177 }
1178 
1179 void JSONNodeDumper::VisitImplicitCastExpr(const ImplicitCastExpr *ICE) {
1180   VisitCastExpr(ICE);
1181   attributeOnlyIfTrue("isPartOfExplicitCast", ICE->isPartOfExplicitCast());
1182 }
1183 
1184 void JSONNodeDumper::VisitCallExpr(const CallExpr *CE) {
1185   attributeOnlyIfTrue("adl", CE->usesADL());
1186 }
1187 
1188 void JSONNodeDumper::VisitUnaryExprOrTypeTraitExpr(
1189     const UnaryExprOrTypeTraitExpr *TTE) {
1190   switch (TTE->getKind()) {
1191   case UETT_SizeOf: JOS.attribute("name", "sizeof"); break;
1192   case UETT_AlignOf: JOS.attribute("name", "alignof"); break;
1193   case UETT_VecStep:  JOS.attribute("name", "vec_step"); break;
1194   case UETT_PreferredAlignOf:  JOS.attribute("name", "__alignof"); break;
1195   case UETT_OpenMPRequiredSimdAlign:
1196     JOS.attribute("name", "__builtin_omp_required_simd_align"); break;
1197   }
1198   if (TTE->isArgumentType())
1199     JOS.attribute("argType", createQualType(TTE->getArgumentType()));
1200 }
1201 
1202 void JSONNodeDumper::VisitSizeOfPackExpr(const SizeOfPackExpr *SOPE) {
1203   VisitNamedDecl(SOPE->getPack());
1204 }
1205 
1206 void JSONNodeDumper::VisitUnresolvedLookupExpr(
1207     const UnresolvedLookupExpr *ULE) {
1208   JOS.attribute("usesADL", ULE->requiresADL());
1209   JOS.attribute("name", ULE->getName().getAsString());
1210 
1211   JOS.attributeArray("lookups", [this, ULE] {
1212     for (const NamedDecl *D : ULE->decls())
1213       JOS.value(createBareDeclRef(D));
1214   });
1215 }
1216 
1217 void JSONNodeDumper::VisitAddrLabelExpr(const AddrLabelExpr *ALE) {
1218   JOS.attribute("name", ALE->getLabel()->getName());
1219   JOS.attribute("labelDeclId", createPointerRepresentation(ALE->getLabel()));
1220 }
1221 
1222 void JSONNodeDumper::VisitCXXTypeidExpr(const CXXTypeidExpr *CTE) {
1223   if (CTE->isTypeOperand()) {
1224     QualType Adjusted = CTE->getTypeOperand(Ctx);
1225     QualType Unadjusted = CTE->getTypeOperandSourceInfo()->getType();
1226     JOS.attribute("typeArg", createQualType(Unadjusted));
1227     if (Adjusted != Unadjusted)
1228       JOS.attribute("adjustedTypeArg", createQualType(Adjusted));
1229   }
1230 }
1231 
1232 void JSONNodeDumper::VisitConstantExpr(const ConstantExpr *CE) {
1233   if (CE->getResultAPValueKind() != APValue::None) {
1234     std::string Str;
1235     llvm::raw_string_ostream OS(Str);
1236     CE->getAPValueResult().printPretty(OS, Ctx, CE->getType());
1237     JOS.attribute("value", OS.str());
1238   }
1239 }
1240 
1241 void JSONNodeDumper::VisitInitListExpr(const InitListExpr *ILE) {
1242   if (const FieldDecl *FD = ILE->getInitializedFieldInUnion())
1243     JOS.attribute("field", createBareDeclRef(FD));
1244 }
1245 
1246 void JSONNodeDumper::VisitGenericSelectionExpr(
1247     const GenericSelectionExpr *GSE) {
1248   attributeOnlyIfTrue("resultDependent", GSE->isResultDependent());
1249 }
1250 
1251 void JSONNodeDumper::VisitCXXUnresolvedConstructExpr(
1252     const CXXUnresolvedConstructExpr *UCE) {
1253   if (UCE->getType() != UCE->getTypeAsWritten())
1254     JOS.attribute("typeAsWritten", createQualType(UCE->getTypeAsWritten()));
1255   attributeOnlyIfTrue("list", UCE->isListInitialization());
1256 }
1257 
1258 void JSONNodeDumper::VisitCXXConstructExpr(const CXXConstructExpr *CE) {
1259   CXXConstructorDecl *Ctor = CE->getConstructor();
1260   JOS.attribute("ctorType", createQualType(Ctor->getType()));
1261   attributeOnlyIfTrue("elidable", CE->isElidable());
1262   attributeOnlyIfTrue("list", CE->isListInitialization());
1263   attributeOnlyIfTrue("initializer_list", CE->isStdInitListInitialization());
1264   attributeOnlyIfTrue("zeroing", CE->requiresZeroInitialization());
1265   attributeOnlyIfTrue("hadMultipleCandidates", CE->hadMultipleCandidates());
1266 
1267   switch (CE->getConstructionKind()) {
1268   case CXXConstructExpr::CK_Complete:
1269     JOS.attribute("constructionKind", "complete");
1270     break;
1271   case CXXConstructExpr::CK_Delegating:
1272     JOS.attribute("constructionKind", "delegating");
1273     break;
1274   case CXXConstructExpr::CK_NonVirtualBase:
1275     JOS.attribute("constructionKind", "non-virtual base");
1276     break;
1277   case CXXConstructExpr::CK_VirtualBase:
1278     JOS.attribute("constructionKind", "virtual base");
1279     break;
1280   }
1281 }
1282 
1283 void JSONNodeDumper::VisitExprWithCleanups(const ExprWithCleanups *EWC) {
1284   attributeOnlyIfTrue("cleanupsHaveSideEffects",
1285                       EWC->cleanupsHaveSideEffects());
1286   if (EWC->getNumObjects()) {
1287     JOS.attributeArray("cleanups", [this, EWC] {
1288       for (const ExprWithCleanups::CleanupObject &CO : EWC->getObjects())
1289         JOS.value(createBareDeclRef(CO));
1290     });
1291   }
1292 }
1293 
1294 void JSONNodeDumper::VisitCXXBindTemporaryExpr(
1295     const CXXBindTemporaryExpr *BTE) {
1296   const CXXTemporary *Temp = BTE->getTemporary();
1297   JOS.attribute("temp", createPointerRepresentation(Temp));
1298   if (const CXXDestructorDecl *Dtor = Temp->getDestructor())
1299     JOS.attribute("dtor", createBareDeclRef(Dtor));
1300 }
1301 
1302 void JSONNodeDumper::VisitMaterializeTemporaryExpr(
1303     const MaterializeTemporaryExpr *MTE) {
1304   if (const ValueDecl *VD = MTE->getExtendingDecl())
1305     JOS.attribute("extendingDecl", createBareDeclRef(VD));
1306 
1307   switch (MTE->getStorageDuration()) {
1308   case SD_Automatic:
1309     JOS.attribute("storageDuration", "automatic");
1310     break;
1311   case SD_Dynamic:
1312     JOS.attribute("storageDuration", "dynamic");
1313     break;
1314   case SD_FullExpression:
1315     JOS.attribute("storageDuration", "full expression");
1316     break;
1317   case SD_Static:
1318     JOS.attribute("storageDuration", "static");
1319     break;
1320   case SD_Thread:
1321     JOS.attribute("storageDuration", "thread");
1322     break;
1323   }
1324 
1325   attributeOnlyIfTrue("boundToLValueRef", MTE->isBoundToLvalueReference());
1326 }
1327 
1328 void JSONNodeDumper::VisitCXXDependentScopeMemberExpr(
1329     const CXXDependentScopeMemberExpr *DSME) {
1330   JOS.attribute("isArrow", DSME->isArrow());
1331   JOS.attribute("member", DSME->getMember().getAsString());
1332   attributeOnlyIfTrue("hasTemplateKeyword", DSME->hasTemplateKeyword());
1333   attributeOnlyIfTrue("hasExplicitTemplateArgs",
1334                       DSME->hasExplicitTemplateArgs());
1335 
1336   if (DSME->getNumTemplateArgs()) {
1337     JOS.attributeArray("explicitTemplateArgs", [DSME, this] {
1338       for (const TemplateArgumentLoc &TAL : DSME->template_arguments())
1339         JOS.object(
1340             [&TAL, this] { Visit(TAL.getArgument(), TAL.getSourceRange()); });
1341     });
1342   }
1343 }
1344 
1345 void JSONNodeDumper::VisitIntegerLiteral(const IntegerLiteral *IL) {
1346   JOS.attribute("value",
1347                 IL->getValue().toString(
1348                     /*Radix=*/10, IL->getType()->isSignedIntegerType()));
1349 }
1350 void JSONNodeDumper::VisitCharacterLiteral(const CharacterLiteral *CL) {
1351   // FIXME: This should probably print the character literal as a string,
1352   // rather than as a numerical value. It would be nice if the behavior matched
1353   // what we do to print a string literal; right now, it is impossible to tell
1354   // the difference between 'a' and L'a' in C from the JSON output.
1355   JOS.attribute("value", CL->getValue());
1356 }
1357 void JSONNodeDumper::VisitFixedPointLiteral(const FixedPointLiteral *FPL) {
1358   JOS.attribute("value", FPL->getValueAsString(/*Radix=*/10));
1359 }
1360 void JSONNodeDumper::VisitFloatingLiteral(const FloatingLiteral *FL) {
1361   llvm::SmallVector<char, 16> Buffer;
1362   FL->getValue().toString(Buffer);
1363   JOS.attribute("value", Buffer);
1364 }
1365 void JSONNodeDumper::VisitStringLiteral(const StringLiteral *SL) {
1366   std::string Buffer;
1367   llvm::raw_string_ostream SS(Buffer);
1368   SL->outputString(SS);
1369   JOS.attribute("value", SS.str());
1370 }
1371 void JSONNodeDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *BLE) {
1372   JOS.attribute("value", BLE->getValue());
1373 }
1374 
1375 void JSONNodeDumper::VisitIfStmt(const IfStmt *IS) {
1376   attributeOnlyIfTrue("hasInit", IS->hasInitStorage());
1377   attributeOnlyIfTrue("hasVar", IS->hasVarStorage());
1378   attributeOnlyIfTrue("hasElse", IS->hasElseStorage());
1379   attributeOnlyIfTrue("isConstexpr", IS->isConstexpr());
1380 }
1381 
1382 void JSONNodeDumper::VisitSwitchStmt(const SwitchStmt *SS) {
1383   attributeOnlyIfTrue("hasInit", SS->hasInitStorage());
1384   attributeOnlyIfTrue("hasVar", SS->hasVarStorage());
1385 }
1386 void JSONNodeDumper::VisitCaseStmt(const CaseStmt *CS) {
1387   attributeOnlyIfTrue("isGNURange", CS->caseStmtIsGNURange());
1388 }
1389 
1390 void JSONNodeDumper::VisitLabelStmt(const LabelStmt *LS) {
1391   JOS.attribute("name", LS->getName());
1392   JOS.attribute("declId", createPointerRepresentation(LS->getDecl()));
1393 }
1394 void JSONNodeDumper::VisitGotoStmt(const GotoStmt *GS) {
1395   JOS.attribute("targetLabelDeclId",
1396                 createPointerRepresentation(GS->getLabel()));
1397 }
1398 
1399 void JSONNodeDumper::VisitWhileStmt(const WhileStmt *WS) {
1400   attributeOnlyIfTrue("hasVar", WS->hasVarStorage());
1401 }
1402 
1403 void JSONNodeDumper::VisitObjCAtCatchStmt(const ObjCAtCatchStmt* OACS) {
1404   // FIXME: it would be nice for the ASTNodeTraverser would handle the catch
1405   // parameter the same way for C++ and ObjC rather. In this case, C++ gets a
1406   // null child node and ObjC gets no child node.
1407   attributeOnlyIfTrue("isCatchAll", OACS->getCatchParamDecl() == nullptr);
1408 }
1409 
1410 void JSONNodeDumper::VisitNullTemplateArgument(const TemplateArgument &TA) {
1411   JOS.attribute("isNull", true);
1412 }
1413 void JSONNodeDumper::VisitTypeTemplateArgument(const TemplateArgument &TA) {
1414   JOS.attribute("type", createQualType(TA.getAsType()));
1415 }
1416 void JSONNodeDumper::VisitDeclarationTemplateArgument(
1417     const TemplateArgument &TA) {
1418   JOS.attribute("decl", createBareDeclRef(TA.getAsDecl()));
1419 }
1420 void JSONNodeDumper::VisitNullPtrTemplateArgument(const TemplateArgument &TA) {
1421   JOS.attribute("isNullptr", true);
1422 }
1423 void JSONNodeDumper::VisitIntegralTemplateArgument(const TemplateArgument &TA) {
1424   JOS.attribute("value", TA.getAsIntegral().getSExtValue());
1425 }
1426 void JSONNodeDumper::VisitTemplateTemplateArgument(const TemplateArgument &TA) {
1427   // FIXME: cannot just call dump() on the argument, as that doesn't specify
1428   // the output format.
1429 }
1430 void JSONNodeDumper::VisitTemplateExpansionTemplateArgument(
1431     const TemplateArgument &TA) {
1432   // FIXME: cannot just call dump() on the argument, as that doesn't specify
1433   // the output format.
1434 }
1435 void JSONNodeDumper::VisitExpressionTemplateArgument(
1436     const TemplateArgument &TA) {
1437   JOS.attribute("isExpr", true);
1438 }
1439 void JSONNodeDumper::VisitPackTemplateArgument(const TemplateArgument &TA) {
1440   JOS.attribute("isPack", true);
1441 }
1442 
1443 StringRef JSONNodeDumper::getCommentCommandName(unsigned CommandID) const {
1444   if (Traits)
1445     return Traits->getCommandInfo(CommandID)->Name;
1446   if (const comments::CommandInfo *Info =
1447           comments::CommandTraits::getBuiltinCommandInfo(CommandID))
1448     return Info->Name;
1449   return "<invalid>";
1450 }
1451 
1452 void JSONNodeDumper::visitTextComment(const comments::TextComment *C,
1453                                       const comments::FullComment *) {
1454   JOS.attribute("text", C->getText());
1455 }
1456 
1457 void JSONNodeDumper::visitInlineCommandComment(
1458     const comments::InlineCommandComment *C, const comments::FullComment *) {
1459   JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1460 
1461   switch (C->getRenderKind()) {
1462   case comments::InlineCommandComment::RenderNormal:
1463     JOS.attribute("renderKind", "normal");
1464     break;
1465   case comments::InlineCommandComment::RenderBold:
1466     JOS.attribute("renderKind", "bold");
1467     break;
1468   case comments::InlineCommandComment::RenderEmphasized:
1469     JOS.attribute("renderKind", "emphasized");
1470     break;
1471   case comments::InlineCommandComment::RenderMonospaced:
1472     JOS.attribute("renderKind", "monospaced");
1473     break;
1474   }
1475 
1476   llvm::json::Array Args;
1477   for (unsigned I = 0, E = C->getNumArgs(); I < E; ++I)
1478     Args.push_back(C->getArgText(I));
1479 
1480   if (!Args.empty())
1481     JOS.attribute("args", std::move(Args));
1482 }
1483 
1484 void JSONNodeDumper::visitHTMLStartTagComment(
1485     const comments::HTMLStartTagComment *C, const comments::FullComment *) {
1486   JOS.attribute("name", C->getTagName());
1487   attributeOnlyIfTrue("selfClosing", C->isSelfClosing());
1488   attributeOnlyIfTrue("malformed", C->isMalformed());
1489 
1490   llvm::json::Array Attrs;
1491   for (unsigned I = 0, E = C->getNumAttrs(); I < E; ++I)
1492     Attrs.push_back(
1493         {{"name", C->getAttr(I).Name}, {"value", C->getAttr(I).Value}});
1494 
1495   if (!Attrs.empty())
1496     JOS.attribute("attrs", std::move(Attrs));
1497 }
1498 
1499 void JSONNodeDumper::visitHTMLEndTagComment(
1500     const comments::HTMLEndTagComment *C, const comments::FullComment *) {
1501   JOS.attribute("name", C->getTagName());
1502 }
1503 
1504 void JSONNodeDumper::visitBlockCommandComment(
1505     const comments::BlockCommandComment *C, const comments::FullComment *) {
1506   JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1507 
1508   llvm::json::Array Args;
1509   for (unsigned I = 0, E = C->getNumArgs(); I < E; ++I)
1510     Args.push_back(C->getArgText(I));
1511 
1512   if (!Args.empty())
1513     JOS.attribute("args", std::move(Args));
1514 }
1515 
1516 void JSONNodeDumper::visitParamCommandComment(
1517     const comments::ParamCommandComment *C, const comments::FullComment *FC) {
1518   switch (C->getDirection()) {
1519   case comments::ParamCommandComment::In:
1520     JOS.attribute("direction", "in");
1521     break;
1522   case comments::ParamCommandComment::Out:
1523     JOS.attribute("direction", "out");
1524     break;
1525   case comments::ParamCommandComment::InOut:
1526     JOS.attribute("direction", "in,out");
1527     break;
1528   }
1529   attributeOnlyIfTrue("explicit", C->isDirectionExplicit());
1530 
1531   if (C->hasParamName())
1532     JOS.attribute("param", C->isParamIndexValid() ? C->getParamName(FC)
1533                                                   : C->getParamNameAsWritten());
1534 
1535   if (C->isParamIndexValid() && !C->isVarArgParam())
1536     JOS.attribute("paramIdx", C->getParamIndex());
1537 }
1538 
1539 void JSONNodeDumper::visitTParamCommandComment(
1540     const comments::TParamCommandComment *C, const comments::FullComment *FC) {
1541   if (C->hasParamName())
1542     JOS.attribute("param", C->isPositionValid() ? C->getParamName(FC)
1543                                                 : C->getParamNameAsWritten());
1544   if (C->isPositionValid()) {
1545     llvm::json::Array Positions;
1546     for (unsigned I = 0, E = C->getDepth(); I < E; ++I)
1547       Positions.push_back(C->getIndex(I));
1548 
1549     if (!Positions.empty())
1550       JOS.attribute("positions", std::move(Positions));
1551   }
1552 }
1553 
1554 void JSONNodeDumper::visitVerbatimBlockComment(
1555     const comments::VerbatimBlockComment *C, const comments::FullComment *) {
1556   JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1557   JOS.attribute("closeName", C->getCloseName());
1558 }
1559 
1560 void JSONNodeDumper::visitVerbatimBlockLineComment(
1561     const comments::VerbatimBlockLineComment *C,
1562     const comments::FullComment *) {
1563   JOS.attribute("text", C->getText());
1564 }
1565 
1566 void JSONNodeDumper::visitVerbatimLineComment(
1567     const comments::VerbatimLineComment *C, const comments::FullComment *) {
1568   JOS.attribute("text", C->getText());
1569 }
1570