1#include "clang/AST/JSONNodeDumper.h"
2#include "clang/AST/Type.h"
3#include "clang/Basic/SourceManager.h"
4#include "clang/Basic/Specifiers.h"
5#include "clang/Lex/Lexer.h"
6#include <optional>
7
8using namespace clang;
9
10void JSONNodeDumper::addPreviousDeclaration(const Decl *D) {
11  switch (D->getKind()) {
12#define DECL(DERIVED, BASE)                                                    \
13  case Decl::DERIVED:                                                          \
14    return writePreviousDeclImpl(cast<DERIVED##Decl>(D));
15#define ABSTRACT_DECL(DECL)
16#include "clang/AST/DeclNodes.inc"
17#undef ABSTRACT_DECL
18#undef DECL
19  }
20  llvm_unreachable("Decl that isn't part of DeclNodes.inc!");
21}
22
23void JSONNodeDumper::Visit(const Attr *A) {
24  const char *AttrName = nullptr;
25  switch (A->getKind()) {
26#define ATTR(X)                                                                \
27  case attr::X:                                                                \
28    AttrName = #X"Attr";                                                       \
29    break;
30#include "clang/Basic/AttrList.inc"
31#undef ATTR
32  }
33  JOS.attribute("id", createPointerRepresentation(A));
34  JOS.attribute("kind", AttrName);
35  JOS.attributeObject("range", [A, this] { writeSourceRange(A->getRange()); });
36  attributeOnlyIfTrue("inherited", A->isInherited());
37  attributeOnlyIfTrue("implicit", A->isImplicit());
38
39  // FIXME: it would be useful for us to output the spelling kind as well as
40  // the actual spelling. This would allow us to distinguish between the
41  // various attribute syntaxes, but we don't currently track that information
42  // within the AST.
43  //JOS.attribute("spelling", A->getSpelling());
44
45  InnerAttrVisitor::Visit(A);
46}
47
48void JSONNodeDumper::Visit(const Stmt *S) {
49  if (!S)
50    return;
51
52  JOS.attribute("id", createPointerRepresentation(S));
53  JOS.attribute("kind", S->getStmtClassName());
54  JOS.attributeObject("range",
55                      [S, this] { writeSourceRange(S->getSourceRange()); });
56
57  if (const auto *E = dyn_cast<Expr>(S)) {
58    JOS.attribute("type", createQualType(E->getType()));
59    const char *Category = nullptr;
60    switch (E->getValueKind()) {
61    case VK_LValue: Category = "lvalue"; break;
62    case VK_XValue: Category = "xvalue"; break;
63    case VK_PRValue:
64      Category = "prvalue";
65      break;
66    }
67    JOS.attribute("valueCategory", Category);
68  }
69  InnerStmtVisitor::Visit(S);
70}
71
72void JSONNodeDumper::Visit(const Type *T) {
73  JOS.attribute("id", createPointerRepresentation(T));
74
75  if (!T)
76    return;
77
78  JOS.attribute("kind", (llvm::Twine(T->getTypeClassName()) + "Type").str());
79  JOS.attribute("type", createQualType(QualType(T, 0), /*Desugar*/ false));
80  attributeOnlyIfTrue("containsErrors", T->containsErrors());
81  attributeOnlyIfTrue("isDependent", T->isDependentType());
82  attributeOnlyIfTrue("isInstantiationDependent",
83                      T->isInstantiationDependentType());
84  attributeOnlyIfTrue("isVariablyModified", T->isVariablyModifiedType());
85  attributeOnlyIfTrue("containsUnexpandedPack",
86                      T->containsUnexpandedParameterPack());
87  attributeOnlyIfTrue("isImported", T->isFromAST());
88  InnerTypeVisitor::Visit(T);
89}
90
91void JSONNodeDumper::Visit(QualType T) {
92  JOS.attribute("id", createPointerRepresentation(T.getAsOpaquePtr()));
93  JOS.attribute("kind", "QualType");
94  JOS.attribute("type", createQualType(T));
95  JOS.attribute("qualifiers", T.split().Quals.getAsString());
96}
97
98void JSONNodeDumper::Visit(const Decl *D) {
99  JOS.attribute("id", createPointerRepresentation(D));
100
101  if (!D)
102    return;
103
104  JOS.attribute("kind", (llvm::Twine(D->getDeclKindName()) + "Decl").str());
105  JOS.attributeObject("loc",
106                      [D, this] { writeSourceLocation(D->getLocation()); });
107  JOS.attributeObject("range",
108                      [D, this] { writeSourceRange(D->getSourceRange()); });
109  attributeOnlyIfTrue("isImplicit", D->isImplicit());
110  attributeOnlyIfTrue("isInvalid", D->isInvalidDecl());
111
112  if (D->isUsed())
113    JOS.attribute("isUsed", true);
114  else if (D->isThisDeclarationReferenced())
115    JOS.attribute("isReferenced", true);
116
117  if (const auto *ND = dyn_cast<NamedDecl>(D))
118    attributeOnlyIfTrue("isHidden", !ND->isUnconditionallyVisible());
119
120  if (D->getLexicalDeclContext() != D->getDeclContext()) {
121    // Because of multiple inheritance, a DeclContext pointer does not produce
122    // the same pointer representation as a Decl pointer that references the
123    // same AST Node.
124    const auto *ParentDeclContextDecl = dyn_cast<Decl>(D->getDeclContext());
125    JOS.attribute("parentDeclContextId",
126                  createPointerRepresentation(ParentDeclContextDecl));
127  }
128
129  addPreviousDeclaration(D);
130  InnerDeclVisitor::Visit(D);
131}
132
133void JSONNodeDumper::Visit(const comments::Comment *C,
134                           const comments::FullComment *FC) {
135  if (!C)
136    return;
137
138  JOS.attribute("id", createPointerRepresentation(C));
139  JOS.attribute("kind", C->getCommentKindName());
140  JOS.attributeObject("loc",
141                      [C, this] { writeSourceLocation(C->getLocation()); });
142  JOS.attributeObject("range",
143                      [C, this] { writeSourceRange(C->getSourceRange()); });
144
145  InnerCommentVisitor::visit(C, FC);
146}
147
148void JSONNodeDumper::Visit(const TemplateArgument &TA, SourceRange R,
149                           const Decl *From, StringRef Label) {
150  JOS.attribute("kind", "TemplateArgument");
151  if (R.isValid())
152    JOS.attributeObject("range", [R, this] { writeSourceRange(R); });
153
154  if (From)
155    JOS.attribute(Label.empty() ? "fromDecl" : Label, createBareDeclRef(From));
156
157  InnerTemplateArgVisitor::Visit(TA);
158}
159
160void JSONNodeDumper::Visit(const CXXCtorInitializer *Init) {
161  JOS.attribute("kind", "CXXCtorInitializer");
162  if (Init->isAnyMemberInitializer())
163    JOS.attribute("anyInit", createBareDeclRef(Init->getAnyMember()));
164  else if (Init->isBaseInitializer())
165    JOS.attribute("baseInit",
166                  createQualType(QualType(Init->getBaseClass(), 0)));
167  else if (Init->isDelegatingInitializer())
168    JOS.attribute("delegatingInit",
169                  createQualType(Init->getTypeSourceInfo()->getType()));
170  else
171    llvm_unreachable("Unknown initializer type");
172}
173
174void JSONNodeDumper::Visit(const OMPClause *C) {}
175
176void JSONNodeDumper::Visit(const BlockDecl::Capture &C) {
177  JOS.attribute("kind", "Capture");
178  attributeOnlyIfTrue("byref", C.isByRef());
179  attributeOnlyIfTrue("nested", C.isNested());
180  if (C.getVariable())
181    JOS.attribute("var", createBareDeclRef(C.getVariable()));
182}
183
184void JSONNodeDumper::Visit(const GenericSelectionExpr::ConstAssociation &A) {
185  JOS.attribute("associationKind", A.getTypeSourceInfo() ? "case" : "default");
186  attributeOnlyIfTrue("selected", A.isSelected());
187}
188
189void JSONNodeDumper::Visit(const concepts::Requirement *R) {
190  if (!R)
191    return;
192
193  switch (R->getKind()) {
194  case concepts::Requirement::RK_Type:
195    JOS.attribute("kind", "TypeRequirement");
196    break;
197  case concepts::Requirement::RK_Simple:
198    JOS.attribute("kind", "SimpleRequirement");
199    break;
200  case concepts::Requirement::RK_Compound:
201    JOS.attribute("kind", "CompoundRequirement");
202    break;
203  case concepts::Requirement::RK_Nested:
204    JOS.attribute("kind", "NestedRequirement");
205    break;
206  }
207
208  if (auto *ER = dyn_cast<concepts::ExprRequirement>(R))
209    attributeOnlyIfTrue("noexcept", ER->hasNoexceptRequirement());
210
211  attributeOnlyIfTrue("isDependent", R->isDependent());
212  if (!R->isDependent())
213    JOS.attribute("satisfied", R->isSatisfied());
214  attributeOnlyIfTrue("containsUnexpandedPack",
215                      R->containsUnexpandedParameterPack());
216}
217
218void JSONNodeDumper::Visit(const APValue &Value, QualType Ty) {
219  std::string Str;
220  llvm::raw_string_ostream OS(Str);
221  Value.printPretty(OS, Ctx, Ty);
222  JOS.attribute("value", OS.str());
223}
224
225void JSONNodeDumper::writeIncludeStack(PresumedLoc Loc, bool JustFirst) {
226  if (Loc.isInvalid())
227    return;
228
229  JOS.attributeBegin("includedFrom");
230  JOS.objectBegin();
231
232  if (!JustFirst) {
233    // Walk the stack recursively, then print out the presumed location.
234    writeIncludeStack(SM.getPresumedLoc(Loc.getIncludeLoc()));
235  }
236
237  JOS.attribute("file", Loc.getFilename());
238  JOS.objectEnd();
239  JOS.attributeEnd();
240}
241
242void JSONNodeDumper::writeBareSourceLocation(SourceLocation Loc,
243                                             bool IsSpelling) {
244  PresumedLoc Presumed = SM.getPresumedLoc(Loc);
245  unsigned ActualLine = IsSpelling ? SM.getSpellingLineNumber(Loc)
246                                   : SM.getExpansionLineNumber(Loc);
247  StringRef ActualFile = SM.getBufferName(Loc);
248
249  if (Presumed.isValid()) {
250    JOS.attribute("offset", SM.getDecomposedLoc(Loc).second);
251    if (LastLocFilename != ActualFile) {
252      JOS.attribute("file", ActualFile);
253      JOS.attribute("line", ActualLine);
254    } else if (LastLocLine != ActualLine)
255      JOS.attribute("line", ActualLine);
256
257    StringRef PresumedFile = Presumed.getFilename();
258    if (PresumedFile != ActualFile && LastLocPresumedFilename != PresumedFile)
259      JOS.attribute("presumedFile", PresumedFile);
260
261    unsigned PresumedLine = Presumed.getLine();
262    if (ActualLine != PresumedLine && LastLocPresumedLine != PresumedLine)
263      JOS.attribute("presumedLine", PresumedLine);
264
265    JOS.attribute("col", Presumed.getColumn());
266    JOS.attribute("tokLen",
267                  Lexer::MeasureTokenLength(Loc, SM, Ctx.getLangOpts()));
268    LastLocFilename = ActualFile;
269    LastLocPresumedFilename = PresumedFile;
270    LastLocPresumedLine = PresumedLine;
271    LastLocLine = ActualLine;
272
273    // Orthogonal to the file, line, and column de-duplication is whether the
274    // given location was a result of an include. If so, print where the
275    // include location came from.
276    writeIncludeStack(SM.getPresumedLoc(Presumed.getIncludeLoc()),
277                      /*JustFirst*/ true);
278  }
279}
280
281void JSONNodeDumper::writeSourceLocation(SourceLocation Loc) {
282  SourceLocation Spelling = SM.getSpellingLoc(Loc);
283  SourceLocation Expansion = SM.getExpansionLoc(Loc);
284
285  if (Expansion != Spelling) {
286    // If the expansion and the spelling are different, output subobjects
287    // describing both locations.
288    JOS.attributeObject("spellingLoc", [Spelling, this] {
289      writeBareSourceLocation(Spelling, /*IsSpelling*/ true);
290    });
291    JOS.attributeObject("expansionLoc", [Expansion, Loc, this] {
292      writeBareSourceLocation(Expansion, /*IsSpelling*/ false);
293      // If there is a macro expansion, add extra information if the interesting
294      // bit is the macro arg expansion.
295      if (SM.isMacroArgExpansion(Loc))
296        JOS.attribute("isMacroArgExpansion", true);
297    });
298  } else
299    writeBareSourceLocation(Spelling, /*IsSpelling*/ true);
300}
301
302void JSONNodeDumper::writeSourceRange(SourceRange R) {
303  JOS.attributeObject("begin",
304                      [R, this] { writeSourceLocation(R.getBegin()); });
305  JOS.attributeObject("end", [R, this] { writeSourceLocation(R.getEnd()); });
306}
307
308std::string JSONNodeDumper::createPointerRepresentation(const void *Ptr) {
309  // Because JSON stores integer values as signed 64-bit integers, trying to
310  // represent them as such makes for very ugly pointer values in the resulting
311  // output. Instead, we convert the value to hex and treat it as a string.
312  return "0x" + llvm::utohexstr(reinterpret_cast<uint64_t>(Ptr), true);
313}
314
315llvm::json::Object JSONNodeDumper::createQualType(QualType QT, bool Desugar) {
316  SplitQualType SQT = QT.split();
317  llvm::json::Object Ret{{"qualType", QualType::getAsString(SQT, PrintPolicy)}};
318
319  if (Desugar && !QT.isNull()) {
320    SplitQualType DSQT = QT.getSplitDesugaredType();
321    if (DSQT != SQT)
322      Ret["desugaredQualType"] = QualType::getAsString(DSQT, PrintPolicy);
323    if (const auto *TT = QT->getAs<TypedefType>())
324      Ret["typeAliasDeclId"] = createPointerRepresentation(TT->getDecl());
325  }
326  return Ret;
327}
328
329void JSONNodeDumper::writeBareDeclRef(const Decl *D) {
330  JOS.attribute("id", createPointerRepresentation(D));
331  if (!D)
332    return;
333
334  JOS.attribute("kind", (llvm::Twine(D->getDeclKindName()) + "Decl").str());
335  if (const auto *ND = dyn_cast<NamedDecl>(D))
336    JOS.attribute("name", ND->getDeclName().getAsString());
337  if (const auto *VD = dyn_cast<ValueDecl>(D))
338    JOS.attribute("type", createQualType(VD->getType()));
339}
340
341llvm::json::Object JSONNodeDumper::createBareDeclRef(const Decl *D) {
342  llvm::json::Object Ret{{"id", createPointerRepresentation(D)}};
343  if (!D)
344    return Ret;
345
346  Ret["kind"] = (llvm::Twine(D->getDeclKindName()) + "Decl").str();
347  if (const auto *ND = dyn_cast<NamedDecl>(D))
348    Ret["name"] = ND->getDeclName().getAsString();
349  if (const auto *VD = dyn_cast<ValueDecl>(D))
350    Ret["type"] = createQualType(VD->getType());
351  return Ret;
352}
353
354llvm::json::Array JSONNodeDumper::createCastPath(const CastExpr *C) {
355  llvm::json::Array Ret;
356  if (C->path_empty())
357    return Ret;
358
359  for (auto I = C->path_begin(), E = C->path_end(); I != E; ++I) {
360    const CXXBaseSpecifier *Base = *I;
361    const auto *RD =
362        cast<CXXRecordDecl>(Base->getType()->castAs<RecordType>()->getDecl());
363
364    llvm::json::Object Val{{"name", RD->getName()}};
365    if (Base->isVirtual())
366      Val["isVirtual"] = true;
367    Ret.push_back(std::move(Val));
368  }
369  return Ret;
370}
371
372#define FIELD2(Name, Flag)  if (RD->Flag()) Ret[Name] = true
373#define FIELD1(Flag)        FIELD2(#Flag, Flag)
374
375static llvm::json::Object
376createDefaultConstructorDefinitionData(const CXXRecordDecl *RD) {
377  llvm::json::Object Ret;
378
379  FIELD2("exists", hasDefaultConstructor);
380  FIELD2("trivial", hasTrivialDefaultConstructor);
381  FIELD2("nonTrivial", hasNonTrivialDefaultConstructor);
382  FIELD2("userProvided", hasUserProvidedDefaultConstructor);
383  FIELD2("isConstexpr", hasConstexprDefaultConstructor);
384  FIELD2("needsImplicit", needsImplicitDefaultConstructor);
385  FIELD2("defaultedIsConstexpr", defaultedDefaultConstructorIsConstexpr);
386
387  return Ret;
388}
389
390static llvm::json::Object
391createCopyConstructorDefinitionData(const CXXRecordDecl *RD) {
392  llvm::json::Object Ret;
393
394  FIELD2("simple", hasSimpleCopyConstructor);
395  FIELD2("trivial", hasTrivialCopyConstructor);
396  FIELD2("nonTrivial", hasNonTrivialCopyConstructor);
397  FIELD2("userDeclared", hasUserDeclaredCopyConstructor);
398  FIELD2("hasConstParam", hasCopyConstructorWithConstParam);
399  FIELD2("implicitHasConstParam", implicitCopyConstructorHasConstParam);
400  FIELD2("needsImplicit", needsImplicitCopyConstructor);
401  FIELD2("needsOverloadResolution", needsOverloadResolutionForCopyConstructor);
402  if (!RD->needsOverloadResolutionForCopyConstructor())
403    FIELD2("defaultedIsDeleted", defaultedCopyConstructorIsDeleted);
404
405  return Ret;
406}
407
408static llvm::json::Object
409createMoveConstructorDefinitionData(const CXXRecordDecl *RD) {
410  llvm::json::Object Ret;
411
412  FIELD2("exists", hasMoveConstructor);
413  FIELD2("simple", hasSimpleMoveConstructor);
414  FIELD2("trivial", hasTrivialMoveConstructor);
415  FIELD2("nonTrivial", hasNonTrivialMoveConstructor);
416  FIELD2("userDeclared", hasUserDeclaredMoveConstructor);
417  FIELD2("needsImplicit", needsImplicitMoveConstructor);
418  FIELD2("needsOverloadResolution", needsOverloadResolutionForMoveConstructor);
419  if (!RD->needsOverloadResolutionForMoveConstructor())
420    FIELD2("defaultedIsDeleted", defaultedMoveConstructorIsDeleted);
421
422  return Ret;
423}
424
425static llvm::json::Object
426createCopyAssignmentDefinitionData(const CXXRecordDecl *RD) {
427  llvm::json::Object Ret;
428
429  FIELD2("simple", hasSimpleCopyAssignment);
430  FIELD2("trivial", hasTrivialCopyAssignment);
431  FIELD2("nonTrivial", hasNonTrivialCopyAssignment);
432  FIELD2("hasConstParam", hasCopyAssignmentWithConstParam);
433  FIELD2("implicitHasConstParam", implicitCopyAssignmentHasConstParam);
434  FIELD2("userDeclared", hasUserDeclaredCopyAssignment);
435  FIELD2("needsImplicit", needsImplicitCopyAssignment);
436  FIELD2("needsOverloadResolution", needsOverloadResolutionForCopyAssignment);
437
438  return Ret;
439}
440
441static llvm::json::Object
442createMoveAssignmentDefinitionData(const CXXRecordDecl *RD) {
443  llvm::json::Object Ret;
444
445  FIELD2("exists", hasMoveAssignment);
446  FIELD2("simple", hasSimpleMoveAssignment);
447  FIELD2("trivial", hasTrivialMoveAssignment);
448  FIELD2("nonTrivial", hasNonTrivialMoveAssignment);
449  FIELD2("userDeclared", hasUserDeclaredMoveAssignment);
450  FIELD2("needsImplicit", needsImplicitMoveAssignment);
451  FIELD2("needsOverloadResolution", needsOverloadResolutionForMoveAssignment);
452
453  return Ret;
454}
455
456static llvm::json::Object
457createDestructorDefinitionData(const CXXRecordDecl *RD) {
458  llvm::json::Object Ret;
459
460  FIELD2("simple", hasSimpleDestructor);
461  FIELD2("irrelevant", hasIrrelevantDestructor);
462  FIELD2("trivial", hasTrivialDestructor);
463  FIELD2("nonTrivial", hasNonTrivialDestructor);
464  FIELD2("userDeclared", hasUserDeclaredDestructor);
465  FIELD2("needsImplicit", needsImplicitDestructor);
466  FIELD2("needsOverloadResolution", needsOverloadResolutionForDestructor);
467  if (!RD->needsOverloadResolutionForDestructor())
468    FIELD2("defaultedIsDeleted", defaultedDestructorIsDeleted);
469
470  return Ret;
471}
472
473llvm::json::Object
474JSONNodeDumper::createCXXRecordDefinitionData(const CXXRecordDecl *RD) {
475  llvm::json::Object Ret;
476
477  // This data is common to all C++ classes.
478  FIELD1(isGenericLambda);
479  FIELD1(isLambda);
480  FIELD1(isEmpty);
481  FIELD1(isAggregate);
482  FIELD1(isStandardLayout);
483  FIELD1(isTriviallyCopyable);
484  FIELD1(isPOD);
485  FIELD1(isTrivial);
486  FIELD1(isPolymorphic);
487  FIELD1(isAbstract);
488  FIELD1(isLiteral);
489  FIELD1(canPassInRegisters);
490  FIELD1(hasUserDeclaredConstructor);
491  FIELD1(hasConstexprNonCopyMoveConstructor);
492  FIELD1(hasMutableFields);
493  FIELD1(hasVariantMembers);
494  FIELD2("canConstDefaultInit", allowConstDefaultInit);
495
496  Ret["defaultCtor"] = createDefaultConstructorDefinitionData(RD);
497  Ret["copyCtor"] = createCopyConstructorDefinitionData(RD);
498  Ret["moveCtor"] = createMoveConstructorDefinitionData(RD);
499  Ret["copyAssign"] = createCopyAssignmentDefinitionData(RD);
500  Ret["moveAssign"] = createMoveAssignmentDefinitionData(RD);
501  Ret["dtor"] = createDestructorDefinitionData(RD);
502
503  return Ret;
504}
505
506#undef FIELD1
507#undef FIELD2
508
509std::string JSONNodeDumper::createAccessSpecifier(AccessSpecifier AS) {
510  const auto AccessSpelling = getAccessSpelling(AS);
511  if (AccessSpelling.empty())
512    return "none";
513  return AccessSpelling.str();
514}
515
516llvm::json::Object
517JSONNodeDumper::createCXXBaseSpecifier(const CXXBaseSpecifier &BS) {
518  llvm::json::Object Ret;
519
520  Ret["type"] = createQualType(BS.getType());
521  Ret["access"] = createAccessSpecifier(BS.getAccessSpecifier());
522  Ret["writtenAccess"] =
523      createAccessSpecifier(BS.getAccessSpecifierAsWritten());
524  if (BS.isVirtual())
525    Ret["isVirtual"] = true;
526  if (BS.isPackExpansion())
527    Ret["isPackExpansion"] = true;
528
529  return Ret;
530}
531
532void JSONNodeDumper::VisitTypedefType(const TypedefType *TT) {
533  JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
534  if (!TT->typeMatchesDecl())
535    JOS.attribute("type", createQualType(TT->desugar()));
536}
537
538void JSONNodeDumper::VisitUsingType(const UsingType *TT) {
539  JOS.attribute("decl", createBareDeclRef(TT->getFoundDecl()));
540  if (!TT->typeMatchesDecl())
541    JOS.attribute("type", createQualType(TT->desugar()));
542}
543
544void JSONNodeDumper::VisitFunctionType(const FunctionType *T) {
545  FunctionType::ExtInfo E = T->getExtInfo();
546  attributeOnlyIfTrue("noreturn", E.getNoReturn());
547  attributeOnlyIfTrue("producesResult", E.getProducesResult());
548  if (E.getHasRegParm())
549    JOS.attribute("regParm", E.getRegParm());
550  JOS.attribute("cc", FunctionType::getNameForCallConv(E.getCC()));
551}
552
553void JSONNodeDumper::VisitFunctionProtoType(const FunctionProtoType *T) {
554  FunctionProtoType::ExtProtoInfo E = T->getExtProtoInfo();
555  attributeOnlyIfTrue("trailingReturn", E.HasTrailingReturn);
556  attributeOnlyIfTrue("const", T->isConst());
557  attributeOnlyIfTrue("volatile", T->isVolatile());
558  attributeOnlyIfTrue("restrict", T->isRestrict());
559  attributeOnlyIfTrue("variadic", E.Variadic);
560  switch (E.RefQualifier) {
561  case RQ_LValue: JOS.attribute("refQualifier", "&"); break;
562  case RQ_RValue: JOS.attribute("refQualifier", "&&"); break;
563  case RQ_None: break;
564  }
565  switch (E.ExceptionSpec.Type) {
566  case EST_DynamicNone:
567  case EST_Dynamic: {
568    JOS.attribute("exceptionSpec", "throw");
569    llvm::json::Array Types;
570    for (QualType QT : E.ExceptionSpec.Exceptions)
571      Types.push_back(createQualType(QT));
572    JOS.attribute("exceptionTypes", std::move(Types));
573  } break;
574  case EST_MSAny:
575    JOS.attribute("exceptionSpec", "throw");
576    JOS.attribute("throwsAny", true);
577    break;
578  case EST_BasicNoexcept:
579    JOS.attribute("exceptionSpec", "noexcept");
580    break;
581  case EST_NoexceptTrue:
582  case EST_NoexceptFalse:
583    JOS.attribute("exceptionSpec", "noexcept");
584    JOS.attribute("conditionEvaluatesTo",
585                E.ExceptionSpec.Type == EST_NoexceptTrue);
586    //JOS.attributeWithCall("exceptionSpecExpr",
587    //                    [this, E]() { Visit(E.ExceptionSpec.NoexceptExpr); });
588    break;
589  case EST_NoThrow:
590    JOS.attribute("exceptionSpec", "nothrow");
591    break;
592  // FIXME: I cannot find a way to trigger these cases while dumping the AST. I
593  // suspect you can only run into them when executing an AST dump from within
594  // the debugger, which is not a use case we worry about for the JSON dumping
595  // feature.
596  case EST_DependentNoexcept:
597  case EST_Unevaluated:
598  case EST_Uninstantiated:
599  case EST_Unparsed:
600  case EST_None: break;
601  }
602  VisitFunctionType(T);
603}
604
605void JSONNodeDumper::VisitRValueReferenceType(const ReferenceType *RT) {
606  attributeOnlyIfTrue("spelledAsLValue", RT->isSpelledAsLValue());
607}
608
609void JSONNodeDumper::VisitArrayType(const ArrayType *AT) {
610  switch (AT->getSizeModifier()) {
611  case ArrayType::Star:
612    JOS.attribute("sizeModifier", "*");
613    break;
614  case ArrayType::Static:
615    JOS.attribute("sizeModifier", "static");
616    break;
617  case ArrayType::Normal:
618    break;
619  }
620
621  std::string Str = AT->getIndexTypeQualifiers().getAsString();
622  if (!Str.empty())
623    JOS.attribute("indexTypeQualifiers", Str);
624}
625
626void JSONNodeDumper::VisitConstantArrayType(const ConstantArrayType *CAT) {
627  // FIXME: this should use ZExt instead of SExt, but JSON doesn't allow a
628  // narrowing conversion to int64_t so it cannot be expressed.
629  JOS.attribute("size", CAT->getSize().getSExtValue());
630  VisitArrayType(CAT);
631}
632
633void JSONNodeDumper::VisitDependentSizedExtVectorType(
634    const DependentSizedExtVectorType *VT) {
635  JOS.attributeObject(
636      "attrLoc", [VT, this] { writeSourceLocation(VT->getAttributeLoc()); });
637}
638
639void JSONNodeDumper::VisitVectorType(const VectorType *VT) {
640  JOS.attribute("numElements", VT->getNumElements());
641  switch (VT->getVectorKind()) {
642  case VectorType::GenericVector:
643    break;
644  case VectorType::AltiVecVector:
645    JOS.attribute("vectorKind", "altivec");
646    break;
647  case VectorType::AltiVecPixel:
648    JOS.attribute("vectorKind", "altivec pixel");
649    break;
650  case VectorType::AltiVecBool:
651    JOS.attribute("vectorKind", "altivec bool");
652    break;
653  case VectorType::NeonVector:
654    JOS.attribute("vectorKind", "neon");
655    break;
656  case VectorType::NeonPolyVector:
657    JOS.attribute("vectorKind", "neon poly");
658    break;
659  case VectorType::SveFixedLengthDataVector:
660    JOS.attribute("vectorKind", "fixed-length sve data vector");
661    break;
662  case VectorType::SveFixedLengthPredicateVector:
663    JOS.attribute("vectorKind", "fixed-length sve predicate vector");
664    break;
665  }
666}
667
668void JSONNodeDumper::VisitUnresolvedUsingType(const UnresolvedUsingType *UUT) {
669  JOS.attribute("decl", createBareDeclRef(UUT->getDecl()));
670}
671
672void JSONNodeDumper::VisitUnaryTransformType(const UnaryTransformType *UTT) {
673  switch (UTT->getUTTKind()) {
674#define TRANSFORM_TYPE_TRAIT_DEF(Enum, Trait)                                  \
675  case UnaryTransformType::Enum:                                               \
676    JOS.attribute("transformKind", #Trait);                                    \
677    break;
678#include "clang/Basic/TransformTypeTraits.def"
679  }
680}
681
682void JSONNodeDumper::VisitTagType(const TagType *TT) {
683  JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
684}
685
686void JSONNodeDumper::VisitTemplateTypeParmType(
687    const TemplateTypeParmType *TTPT) {
688  JOS.attribute("depth", TTPT->getDepth());
689  JOS.attribute("index", TTPT->getIndex());
690  attributeOnlyIfTrue("isPack", TTPT->isParameterPack());
691  JOS.attribute("decl", createBareDeclRef(TTPT->getDecl()));
692}
693
694void JSONNodeDumper::VisitSubstTemplateTypeParmType(
695    const SubstTemplateTypeParmType *STTPT) {
696  JOS.attribute("index", STTPT->getIndex());
697  if (auto PackIndex = STTPT->getPackIndex())
698    JOS.attribute("pack_index", *PackIndex);
699}
700
701void JSONNodeDumper::VisitSubstTemplateTypeParmPackType(
702    const SubstTemplateTypeParmPackType *T) {
703  JOS.attribute("index", T->getIndex());
704}
705
706void JSONNodeDumper::VisitAutoType(const AutoType *AT) {
707  JOS.attribute("undeduced", !AT->isDeduced());
708  switch (AT->getKeyword()) {
709  case AutoTypeKeyword::Auto:
710    JOS.attribute("typeKeyword", "auto");
711    break;
712  case AutoTypeKeyword::DecltypeAuto:
713    JOS.attribute("typeKeyword", "decltype(auto)");
714    break;
715  case AutoTypeKeyword::GNUAutoType:
716    JOS.attribute("typeKeyword", "__auto_type");
717    break;
718  }
719}
720
721void JSONNodeDumper::VisitTemplateSpecializationType(
722    const TemplateSpecializationType *TST) {
723  attributeOnlyIfTrue("isAlias", TST->isTypeAlias());
724
725  std::string Str;
726  llvm::raw_string_ostream OS(Str);
727  TST->getTemplateName().print(OS, PrintPolicy);
728  JOS.attribute("templateName", OS.str());
729}
730
731void JSONNodeDumper::VisitInjectedClassNameType(
732    const InjectedClassNameType *ICNT) {
733  JOS.attribute("decl", createBareDeclRef(ICNT->getDecl()));
734}
735
736void JSONNodeDumper::VisitObjCInterfaceType(const ObjCInterfaceType *OIT) {
737  JOS.attribute("decl", createBareDeclRef(OIT->getDecl()));
738}
739
740void JSONNodeDumper::VisitPackExpansionType(const PackExpansionType *PET) {
741  if (std::optional<unsigned> N = PET->getNumExpansions())
742    JOS.attribute("numExpansions", *N);
743}
744
745void JSONNodeDumper::VisitElaboratedType(const ElaboratedType *ET) {
746  if (const NestedNameSpecifier *NNS = ET->getQualifier()) {
747    std::string Str;
748    llvm::raw_string_ostream OS(Str);
749    NNS->print(OS, PrintPolicy, /*ResolveTemplateArgs*/ true);
750    JOS.attribute("qualifier", OS.str());
751  }
752  if (const TagDecl *TD = ET->getOwnedTagDecl())
753    JOS.attribute("ownedTagDecl", createBareDeclRef(TD));
754}
755
756void JSONNodeDumper::VisitMacroQualifiedType(const MacroQualifiedType *MQT) {
757  JOS.attribute("macroName", MQT->getMacroIdentifier()->getName());
758}
759
760void JSONNodeDumper::VisitMemberPointerType(const MemberPointerType *MPT) {
761  attributeOnlyIfTrue("isData", MPT->isMemberDataPointer());
762  attributeOnlyIfTrue("isFunction", MPT->isMemberFunctionPointer());
763}
764
765void JSONNodeDumper::VisitNamedDecl(const NamedDecl *ND) {
766  if (ND && ND->getDeclName()) {
767    JOS.attribute("name", ND->getNameAsString());
768    // FIXME: There are likely other contexts in which it makes no sense to ask
769    // for a mangled name.
770    if (isa<RequiresExprBodyDecl>(ND->getDeclContext()))
771      return;
772
773    // Mangled names are not meaningful for locals, and may not be well-defined
774    // in the case of VLAs.
775    auto *VD = dyn_cast<VarDecl>(ND);
776    if (VD && VD->hasLocalStorage())
777      return;
778
779    std::string MangledName = ASTNameGen.getName(ND);
780    if (!MangledName.empty())
781      JOS.attribute("mangledName", MangledName);
782  }
783}
784
785void JSONNodeDumper::VisitTypedefDecl(const TypedefDecl *TD) {
786  VisitNamedDecl(TD);
787  JOS.attribute("type", createQualType(TD->getUnderlyingType()));
788}
789
790void JSONNodeDumper::VisitTypeAliasDecl(const TypeAliasDecl *TAD) {
791  VisitNamedDecl(TAD);
792  JOS.attribute("type", createQualType(TAD->getUnderlyingType()));
793}
794
795void JSONNodeDumper::VisitNamespaceDecl(const NamespaceDecl *ND) {
796  VisitNamedDecl(ND);
797  attributeOnlyIfTrue("isInline", ND->isInline());
798  attributeOnlyIfTrue("isNested", ND->isNested());
799  if (!ND->isOriginalNamespace())
800    JOS.attribute("originalNamespace",
801                  createBareDeclRef(ND->getOriginalNamespace()));
802}
803
804void JSONNodeDumper::VisitUsingDirectiveDecl(const UsingDirectiveDecl *UDD) {
805  JOS.attribute("nominatedNamespace",
806                createBareDeclRef(UDD->getNominatedNamespace()));
807}
808
809void JSONNodeDumper::VisitNamespaceAliasDecl(const NamespaceAliasDecl *NAD) {
810  VisitNamedDecl(NAD);
811  JOS.attribute("aliasedNamespace",
812                createBareDeclRef(NAD->getAliasedNamespace()));
813}
814
815void JSONNodeDumper::VisitUsingDecl(const UsingDecl *UD) {
816  std::string Name;
817  if (const NestedNameSpecifier *NNS = UD->getQualifier()) {
818    llvm::raw_string_ostream SOS(Name);
819    NNS->print(SOS, UD->getASTContext().getPrintingPolicy());
820  }
821  Name += UD->getNameAsString();
822  JOS.attribute("name", Name);
823}
824
825void JSONNodeDumper::VisitUsingEnumDecl(const UsingEnumDecl *UED) {
826  JOS.attribute("target", createBareDeclRef(UED->getEnumDecl()));
827}
828
829void JSONNodeDumper::VisitUsingShadowDecl(const UsingShadowDecl *USD) {
830  JOS.attribute("target", createBareDeclRef(USD->getTargetDecl()));
831}
832
833void JSONNodeDumper::VisitVarDecl(const VarDecl *VD) {
834  VisitNamedDecl(VD);
835  JOS.attribute("type", createQualType(VD->getType()));
836
837  StorageClass SC = VD->getStorageClass();
838  if (SC != SC_None)
839    JOS.attribute("storageClass", VarDecl::getStorageClassSpecifierString(SC));
840  switch (VD->getTLSKind()) {
841  case VarDecl::TLS_Dynamic: JOS.attribute("tls", "dynamic"); break;
842  case VarDecl::TLS_Static: JOS.attribute("tls", "static"); break;
843  case VarDecl::TLS_None: break;
844  }
845  attributeOnlyIfTrue("nrvo", VD->isNRVOVariable());
846  attributeOnlyIfTrue("inline", VD->isInline());
847  attributeOnlyIfTrue("constexpr", VD->isConstexpr());
848  attributeOnlyIfTrue("modulePrivate", VD->isModulePrivate());
849  if (VD->hasInit()) {
850    switch (VD->getInitStyle()) {
851    case VarDecl::CInit: JOS.attribute("init", "c");  break;
852    case VarDecl::CallInit: JOS.attribute("init", "call"); break;
853    case VarDecl::ListInit: JOS.attribute("init", "list"); break;
854    case VarDecl::ParenListInit:
855      JOS.attribute("init", "paren-list");
856      break;
857    }
858  }
859  attributeOnlyIfTrue("isParameterPack", VD->isParameterPack());
860}
861
862void JSONNodeDumper::VisitFieldDecl(const FieldDecl *FD) {
863  VisitNamedDecl(FD);
864  JOS.attribute("type", createQualType(FD->getType()));
865  attributeOnlyIfTrue("mutable", FD->isMutable());
866  attributeOnlyIfTrue("modulePrivate", FD->isModulePrivate());
867  attributeOnlyIfTrue("isBitfield", FD->isBitField());
868  attributeOnlyIfTrue("hasInClassInitializer", FD->hasInClassInitializer());
869}
870
871void JSONNodeDumper::VisitFunctionDecl(const FunctionDecl *FD) {
872  VisitNamedDecl(FD);
873  JOS.attribute("type", createQualType(FD->getType()));
874  StorageClass SC = FD->getStorageClass();
875  if (SC != SC_None)
876    JOS.attribute("storageClass", VarDecl::getStorageClassSpecifierString(SC));
877  attributeOnlyIfTrue("inline", FD->isInlineSpecified());
878  attributeOnlyIfTrue("virtual", FD->isVirtualAsWritten());
879  attributeOnlyIfTrue("pure", FD->isPure());
880  attributeOnlyIfTrue("explicitlyDeleted", FD->isDeletedAsWritten());
881  attributeOnlyIfTrue("constexpr", FD->isConstexpr());
882  attributeOnlyIfTrue("variadic", FD->isVariadic());
883
884  if (FD->isDefaulted())
885    JOS.attribute("explicitlyDefaulted",
886                  FD->isDeleted() ? "deleted" : "default");
887}
888
889void JSONNodeDumper::VisitEnumDecl(const EnumDecl *ED) {
890  VisitNamedDecl(ED);
891  if (ED->isFixed())
892    JOS.attribute("fixedUnderlyingType", createQualType(ED->getIntegerType()));
893  if (ED->isScoped())
894    JOS.attribute("scopedEnumTag",
895                  ED->isScopedUsingClassTag() ? "class" : "struct");
896}
897void JSONNodeDumper::VisitEnumConstantDecl(const EnumConstantDecl *ECD) {
898  VisitNamedDecl(ECD);
899  JOS.attribute("type", createQualType(ECD->getType()));
900}
901
902void JSONNodeDumper::VisitRecordDecl(const RecordDecl *RD) {
903  VisitNamedDecl(RD);
904  JOS.attribute("tagUsed", RD->getKindName());
905  attributeOnlyIfTrue("completeDefinition", RD->isCompleteDefinition());
906}
907void JSONNodeDumper::VisitCXXRecordDecl(const CXXRecordDecl *RD) {
908  VisitRecordDecl(RD);
909
910  // All other information requires a complete definition.
911  if (!RD->isCompleteDefinition())
912    return;
913
914  JOS.attribute("definitionData", createCXXRecordDefinitionData(RD));
915  if (RD->getNumBases()) {
916    JOS.attributeArray("bases", [this, RD] {
917      for (const auto &Spec : RD->bases())
918        JOS.value(createCXXBaseSpecifier(Spec));
919    });
920  }
921}
922
923void JSONNodeDumper::VisitHLSLBufferDecl(const HLSLBufferDecl *D) {
924  VisitNamedDecl(D);
925  JOS.attribute("bufferKind", D->isCBuffer() ? "cbuffer" : "tbuffer");
926}
927
928void JSONNodeDumper::VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D) {
929  VisitNamedDecl(D);
930  JOS.attribute("tagUsed", D->wasDeclaredWithTypename() ? "typename" : "class");
931  JOS.attribute("depth", D->getDepth());
932  JOS.attribute("index", D->getIndex());
933  attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
934
935  if (D->hasDefaultArgument())
936    JOS.attributeObject("defaultArg", [=] {
937      Visit(D->getDefaultArgument(), SourceRange(),
938            D->getDefaultArgStorage().getInheritedFrom(),
939            D->defaultArgumentWasInherited() ? "inherited from" : "previous");
940    });
941}
942
943void JSONNodeDumper::VisitNonTypeTemplateParmDecl(
944    const NonTypeTemplateParmDecl *D) {
945  VisitNamedDecl(D);
946  JOS.attribute("type", createQualType(D->getType()));
947  JOS.attribute("depth", D->getDepth());
948  JOS.attribute("index", D->getIndex());
949  attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
950
951  if (D->hasDefaultArgument())
952    JOS.attributeObject("defaultArg", [=] {
953      Visit(D->getDefaultArgument(), SourceRange(),
954            D->getDefaultArgStorage().getInheritedFrom(),
955            D->defaultArgumentWasInherited() ? "inherited from" : "previous");
956    });
957}
958
959void JSONNodeDumper::VisitTemplateTemplateParmDecl(
960    const TemplateTemplateParmDecl *D) {
961  VisitNamedDecl(D);
962  JOS.attribute("depth", D->getDepth());
963  JOS.attribute("index", D->getIndex());
964  attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
965
966  if (D->hasDefaultArgument())
967    JOS.attributeObject("defaultArg", [=] {
968      const auto *InheritedFrom = D->getDefaultArgStorage().getInheritedFrom();
969      Visit(D->getDefaultArgument().getArgument(),
970            InheritedFrom ? InheritedFrom->getSourceRange() : SourceLocation{},
971            InheritedFrom,
972            D->defaultArgumentWasInherited() ? "inherited from" : "previous");
973    });
974}
975
976void JSONNodeDumper::VisitLinkageSpecDecl(const LinkageSpecDecl *LSD) {
977  StringRef Lang;
978  switch (LSD->getLanguage()) {
979  case LinkageSpecDecl::lang_c: Lang = "C"; break;
980  case LinkageSpecDecl::lang_cxx: Lang = "C++"; break;
981  }
982  JOS.attribute("language", Lang);
983  attributeOnlyIfTrue("hasBraces", LSD->hasBraces());
984}
985
986void JSONNodeDumper::VisitAccessSpecDecl(const AccessSpecDecl *ASD) {
987  JOS.attribute("access", createAccessSpecifier(ASD->getAccess()));
988}
989
990void JSONNodeDumper::VisitFriendDecl(const FriendDecl *FD) {
991  if (const TypeSourceInfo *T = FD->getFriendType())
992    JOS.attribute("type", createQualType(T->getType()));
993}
994
995void JSONNodeDumper::VisitObjCIvarDecl(const ObjCIvarDecl *D) {
996  VisitNamedDecl(D);
997  JOS.attribute("type", createQualType(D->getType()));
998  attributeOnlyIfTrue("synthesized", D->getSynthesize());
999  switch (D->getAccessControl()) {
1000  case ObjCIvarDecl::None: JOS.attribute("access", "none"); break;
1001  case ObjCIvarDecl::Private: JOS.attribute("access", "private"); break;
1002  case ObjCIvarDecl::Protected: JOS.attribute("access", "protected"); break;
1003  case ObjCIvarDecl::Public: JOS.attribute("access", "public"); break;
1004  case ObjCIvarDecl::Package: JOS.attribute("access", "package"); break;
1005  }
1006}
1007
1008void JSONNodeDumper::VisitObjCMethodDecl(const ObjCMethodDecl *D) {
1009  VisitNamedDecl(D);
1010  JOS.attribute("returnType", createQualType(D->getReturnType()));
1011  JOS.attribute("instance", D->isInstanceMethod());
1012  attributeOnlyIfTrue("variadic", D->isVariadic());
1013}
1014
1015void JSONNodeDumper::VisitObjCTypeParamDecl(const ObjCTypeParamDecl *D) {
1016  VisitNamedDecl(D);
1017  JOS.attribute("type", createQualType(D->getUnderlyingType()));
1018  attributeOnlyIfTrue("bounded", D->hasExplicitBound());
1019  switch (D->getVariance()) {
1020  case ObjCTypeParamVariance::Invariant:
1021    break;
1022  case ObjCTypeParamVariance::Covariant:
1023    JOS.attribute("variance", "covariant");
1024    break;
1025  case ObjCTypeParamVariance::Contravariant:
1026    JOS.attribute("variance", "contravariant");
1027    break;
1028  }
1029}
1030
1031void JSONNodeDumper::VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
1032  VisitNamedDecl(D);
1033  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
1034  JOS.attribute("implementation", createBareDeclRef(D->getImplementation()));
1035
1036  llvm::json::Array Protocols;
1037  for (const auto* P : D->protocols())
1038    Protocols.push_back(createBareDeclRef(P));
1039  if (!Protocols.empty())
1040    JOS.attribute("protocols", std::move(Protocols));
1041}
1042
1043void JSONNodeDumper::VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
1044  VisitNamedDecl(D);
1045  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
1046  JOS.attribute("categoryDecl", createBareDeclRef(D->getCategoryDecl()));
1047}
1048
1049void JSONNodeDumper::VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
1050  VisitNamedDecl(D);
1051
1052  llvm::json::Array Protocols;
1053  for (const auto *P : D->protocols())
1054    Protocols.push_back(createBareDeclRef(P));
1055  if (!Protocols.empty())
1056    JOS.attribute("protocols", std::move(Protocols));
1057}
1058
1059void JSONNodeDumper::VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
1060  VisitNamedDecl(D);
1061  JOS.attribute("super", createBareDeclRef(D->getSuperClass()));
1062  JOS.attribute("implementation", createBareDeclRef(D->getImplementation()));
1063
1064  llvm::json::Array Protocols;
1065  for (const auto* P : D->protocols())
1066    Protocols.push_back(createBareDeclRef(P));
1067  if (!Protocols.empty())
1068    JOS.attribute("protocols", std::move(Protocols));
1069}
1070
1071void JSONNodeDumper::VisitObjCImplementationDecl(
1072    const ObjCImplementationDecl *D) {
1073  VisitNamedDecl(D);
1074  JOS.attribute("super", createBareDeclRef(D->getSuperClass()));
1075  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
1076}
1077
1078void JSONNodeDumper::VisitObjCCompatibleAliasDecl(
1079    const ObjCCompatibleAliasDecl *D) {
1080  VisitNamedDecl(D);
1081  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
1082}
1083
1084void JSONNodeDumper::VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
1085  VisitNamedDecl(D);
1086  JOS.attribute("type", createQualType(D->getType()));
1087
1088  switch (D->getPropertyImplementation()) {
1089  case ObjCPropertyDecl::None: break;
1090  case ObjCPropertyDecl::Required: JOS.attribute("control", "required"); break;
1091  case ObjCPropertyDecl::Optional: JOS.attribute("control", "optional"); break;
1092  }
1093
1094  ObjCPropertyAttribute::Kind Attrs = D->getPropertyAttributes();
1095  if (Attrs != ObjCPropertyAttribute::kind_noattr) {
1096    if (Attrs & ObjCPropertyAttribute::kind_getter)
1097      JOS.attribute("getter", createBareDeclRef(D->getGetterMethodDecl()));
1098    if (Attrs & ObjCPropertyAttribute::kind_setter)
1099      JOS.attribute("setter", createBareDeclRef(D->getSetterMethodDecl()));
1100    attributeOnlyIfTrue("readonly",
1101                        Attrs & ObjCPropertyAttribute::kind_readonly);
1102    attributeOnlyIfTrue("assign", Attrs & ObjCPropertyAttribute::kind_assign);
1103    attributeOnlyIfTrue("readwrite",
1104                        Attrs & ObjCPropertyAttribute::kind_readwrite);
1105    attributeOnlyIfTrue("retain", Attrs & ObjCPropertyAttribute::kind_retain);
1106    attributeOnlyIfTrue("copy", Attrs & ObjCPropertyAttribute::kind_copy);
1107    attributeOnlyIfTrue("nonatomic",
1108                        Attrs & ObjCPropertyAttribute::kind_nonatomic);
1109    attributeOnlyIfTrue("atomic", Attrs & ObjCPropertyAttribute::kind_atomic);
1110    attributeOnlyIfTrue("weak", Attrs & ObjCPropertyAttribute::kind_weak);
1111    attributeOnlyIfTrue("strong", Attrs & ObjCPropertyAttribute::kind_strong);
1112    attributeOnlyIfTrue("unsafe_unretained",
1113                        Attrs & ObjCPropertyAttribute::kind_unsafe_unretained);
1114    attributeOnlyIfTrue("class", Attrs & ObjCPropertyAttribute::kind_class);
1115    attributeOnlyIfTrue("direct", Attrs & ObjCPropertyAttribute::kind_direct);
1116    attributeOnlyIfTrue("nullability",
1117                        Attrs & ObjCPropertyAttribute::kind_nullability);
1118    attributeOnlyIfTrue("null_resettable",
1119                        Attrs & ObjCPropertyAttribute::kind_null_resettable);
1120  }
1121}
1122
1123void JSONNodeDumper::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
1124  VisitNamedDecl(D->getPropertyDecl());
1125  JOS.attribute("implKind", D->getPropertyImplementation() ==
1126                                    ObjCPropertyImplDecl::Synthesize
1127                                ? "synthesize"
1128                                : "dynamic");
1129  JOS.attribute("propertyDecl", createBareDeclRef(D->getPropertyDecl()));
1130  JOS.attribute("ivarDecl", createBareDeclRef(D->getPropertyIvarDecl()));
1131}
1132
1133void JSONNodeDumper::VisitBlockDecl(const BlockDecl *D) {
1134  attributeOnlyIfTrue("variadic", D->isVariadic());
1135  attributeOnlyIfTrue("capturesThis", D->capturesCXXThis());
1136}
1137
1138void JSONNodeDumper::VisitObjCEncodeExpr(const ObjCEncodeExpr *OEE) {
1139  JOS.attribute("encodedType", createQualType(OEE->getEncodedType()));
1140}
1141
1142void JSONNodeDumper::VisitObjCMessageExpr(const ObjCMessageExpr *OME) {
1143  std::string Str;
1144  llvm::raw_string_ostream OS(Str);
1145
1146  OME->getSelector().print(OS);
1147  JOS.attribute("selector", OS.str());
1148
1149  switch (OME->getReceiverKind()) {
1150  case ObjCMessageExpr::Instance:
1151    JOS.attribute("receiverKind", "instance");
1152    break;
1153  case ObjCMessageExpr::Class:
1154    JOS.attribute("receiverKind", "class");
1155    JOS.attribute("classType", createQualType(OME->getClassReceiver()));
1156    break;
1157  case ObjCMessageExpr::SuperInstance:
1158    JOS.attribute("receiverKind", "super (instance)");
1159    JOS.attribute("superType", createQualType(OME->getSuperType()));
1160    break;
1161  case ObjCMessageExpr::SuperClass:
1162    JOS.attribute("receiverKind", "super (class)");
1163    JOS.attribute("superType", createQualType(OME->getSuperType()));
1164    break;
1165  }
1166
1167  QualType CallReturnTy = OME->getCallReturnType(Ctx);
1168  if (OME->getType() != CallReturnTy)
1169    JOS.attribute("callReturnType", createQualType(CallReturnTy));
1170}
1171
1172void JSONNodeDumper::VisitObjCBoxedExpr(const ObjCBoxedExpr *OBE) {
1173  if (const ObjCMethodDecl *MD = OBE->getBoxingMethod()) {
1174    std::string Str;
1175    llvm::raw_string_ostream OS(Str);
1176
1177    MD->getSelector().print(OS);
1178    JOS.attribute("selector", OS.str());
1179  }
1180}
1181
1182void JSONNodeDumper::VisitObjCSelectorExpr(const ObjCSelectorExpr *OSE) {
1183  std::string Str;
1184  llvm::raw_string_ostream OS(Str);
1185
1186  OSE->getSelector().print(OS);
1187  JOS.attribute("selector", OS.str());
1188}
1189
1190void JSONNodeDumper::VisitObjCProtocolExpr(const ObjCProtocolExpr *OPE) {
1191  JOS.attribute("protocol", createBareDeclRef(OPE->getProtocol()));
1192}
1193
1194void JSONNodeDumper::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *OPRE) {
1195  if (OPRE->isImplicitProperty()) {
1196    JOS.attribute("propertyKind", "implicit");
1197    if (const ObjCMethodDecl *MD = OPRE->getImplicitPropertyGetter())
1198      JOS.attribute("getter", createBareDeclRef(MD));
1199    if (const ObjCMethodDecl *MD = OPRE->getImplicitPropertySetter())
1200      JOS.attribute("setter", createBareDeclRef(MD));
1201  } else {
1202    JOS.attribute("propertyKind", "explicit");
1203    JOS.attribute("property", createBareDeclRef(OPRE->getExplicitProperty()));
1204  }
1205
1206  attributeOnlyIfTrue("isSuperReceiver", OPRE->isSuperReceiver());
1207  attributeOnlyIfTrue("isMessagingGetter", OPRE->isMessagingGetter());
1208  attributeOnlyIfTrue("isMessagingSetter", OPRE->isMessagingSetter());
1209}
1210
1211void JSONNodeDumper::VisitObjCSubscriptRefExpr(
1212    const ObjCSubscriptRefExpr *OSRE) {
1213  JOS.attribute("subscriptKind",
1214                OSRE->isArraySubscriptRefExpr() ? "array" : "dictionary");
1215
1216  if (const ObjCMethodDecl *MD = OSRE->getAtIndexMethodDecl())
1217    JOS.attribute("getter", createBareDeclRef(MD));
1218  if (const ObjCMethodDecl *MD = OSRE->setAtIndexMethodDecl())
1219    JOS.attribute("setter", createBareDeclRef(MD));
1220}
1221
1222void JSONNodeDumper::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *OIRE) {
1223  JOS.attribute("decl", createBareDeclRef(OIRE->getDecl()));
1224  attributeOnlyIfTrue("isFreeIvar", OIRE->isFreeIvar());
1225  JOS.attribute("isArrow", OIRE->isArrow());
1226}
1227
1228void JSONNodeDumper::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *OBLE) {
1229  JOS.attribute("value", OBLE->getValue() ? "__objc_yes" : "__objc_no");
1230}
1231
1232void JSONNodeDumper::VisitDeclRefExpr(const DeclRefExpr *DRE) {
1233  JOS.attribute("referencedDecl", createBareDeclRef(DRE->getDecl()));
1234  if (DRE->getDecl() != DRE->getFoundDecl())
1235    JOS.attribute("foundReferencedDecl",
1236                  createBareDeclRef(DRE->getFoundDecl()));
1237  switch (DRE->isNonOdrUse()) {
1238  case NOUR_None: break;
1239  case NOUR_Unevaluated: JOS.attribute("nonOdrUseReason", "unevaluated"); break;
1240  case NOUR_Constant: JOS.attribute("nonOdrUseReason", "constant"); break;
1241  case NOUR_Discarded: JOS.attribute("nonOdrUseReason", "discarded"); break;
1242  }
1243}
1244
1245void JSONNodeDumper::VisitSYCLUniqueStableNameExpr(
1246    const SYCLUniqueStableNameExpr *E) {
1247  JOS.attribute("typeSourceInfo",
1248                createQualType(E->getTypeSourceInfo()->getType()));
1249}
1250
1251void JSONNodeDumper::VisitPredefinedExpr(const PredefinedExpr *PE) {
1252  JOS.attribute("name", PredefinedExpr::getIdentKindName(PE->getIdentKind()));
1253}
1254
1255void JSONNodeDumper::VisitUnaryOperator(const UnaryOperator *UO) {
1256  JOS.attribute("isPostfix", UO->isPostfix());
1257  JOS.attribute("opcode", UnaryOperator::getOpcodeStr(UO->getOpcode()));
1258  if (!UO->canOverflow())
1259    JOS.attribute("canOverflow", false);
1260}
1261
1262void JSONNodeDumper::VisitBinaryOperator(const BinaryOperator *BO) {
1263  JOS.attribute("opcode", BinaryOperator::getOpcodeStr(BO->getOpcode()));
1264}
1265
1266void JSONNodeDumper::VisitCompoundAssignOperator(
1267    const CompoundAssignOperator *CAO) {
1268  VisitBinaryOperator(CAO);
1269  JOS.attribute("computeLHSType", createQualType(CAO->getComputationLHSType()));
1270  JOS.attribute("computeResultType",
1271                createQualType(CAO->getComputationResultType()));
1272}
1273
1274void JSONNodeDumper::VisitMemberExpr(const MemberExpr *ME) {
1275  // Note, we always write this Boolean field because the information it conveys
1276  // is critical to understanding the AST node.
1277  ValueDecl *VD = ME->getMemberDecl();
1278  JOS.attribute("name", VD && VD->getDeclName() ? VD->getNameAsString() : "");
1279  JOS.attribute("isArrow", ME->isArrow());
1280  JOS.attribute("referencedMemberDecl", createPointerRepresentation(VD));
1281  switch (ME->isNonOdrUse()) {
1282  case NOUR_None: break;
1283  case NOUR_Unevaluated: JOS.attribute("nonOdrUseReason", "unevaluated"); break;
1284  case NOUR_Constant: JOS.attribute("nonOdrUseReason", "constant"); break;
1285  case NOUR_Discarded: JOS.attribute("nonOdrUseReason", "discarded"); break;
1286  }
1287}
1288
1289void JSONNodeDumper::VisitCXXNewExpr(const CXXNewExpr *NE) {
1290  attributeOnlyIfTrue("isGlobal", NE->isGlobalNew());
1291  attributeOnlyIfTrue("isArray", NE->isArray());
1292  attributeOnlyIfTrue("isPlacement", NE->getNumPlacementArgs() != 0);
1293  switch (NE->getInitializationStyle()) {
1294  case CXXNewExpr::NoInit: break;
1295  case CXXNewExpr::CallInit: JOS.attribute("initStyle", "call"); break;
1296  case CXXNewExpr::ListInit: JOS.attribute("initStyle", "list"); break;
1297  }
1298  if (const FunctionDecl *FD = NE->getOperatorNew())
1299    JOS.attribute("operatorNewDecl", createBareDeclRef(FD));
1300  if (const FunctionDecl *FD = NE->getOperatorDelete())
1301    JOS.attribute("operatorDeleteDecl", createBareDeclRef(FD));
1302}
1303void JSONNodeDumper::VisitCXXDeleteExpr(const CXXDeleteExpr *DE) {
1304  attributeOnlyIfTrue("isGlobal", DE->isGlobalDelete());
1305  attributeOnlyIfTrue("isArray", DE->isArrayForm());
1306  attributeOnlyIfTrue("isArrayAsWritten", DE->isArrayFormAsWritten());
1307  if (const FunctionDecl *FD = DE->getOperatorDelete())
1308    JOS.attribute("operatorDeleteDecl", createBareDeclRef(FD));
1309}
1310
1311void JSONNodeDumper::VisitCXXThisExpr(const CXXThisExpr *TE) {
1312  attributeOnlyIfTrue("implicit", TE->isImplicit());
1313}
1314
1315void JSONNodeDumper::VisitCastExpr(const CastExpr *CE) {
1316  JOS.attribute("castKind", CE->getCastKindName());
1317  llvm::json::Array Path = createCastPath(CE);
1318  if (!Path.empty())
1319    JOS.attribute("path", std::move(Path));
1320  // FIXME: This may not be useful information as it can be obtusely gleaned
1321  // from the inner[] array.
1322  if (const NamedDecl *ND = CE->getConversionFunction())
1323    JOS.attribute("conversionFunc", createBareDeclRef(ND));
1324}
1325
1326void JSONNodeDumper::VisitImplicitCastExpr(const ImplicitCastExpr *ICE) {
1327  VisitCastExpr(ICE);
1328  attributeOnlyIfTrue("isPartOfExplicitCast", ICE->isPartOfExplicitCast());
1329}
1330
1331void JSONNodeDumper::VisitCallExpr(const CallExpr *CE) {
1332  attributeOnlyIfTrue("adl", CE->usesADL());
1333}
1334
1335void JSONNodeDumper::VisitUnaryExprOrTypeTraitExpr(
1336    const UnaryExprOrTypeTraitExpr *TTE) {
1337  JOS.attribute("name", getTraitSpelling(TTE->getKind()));
1338  if (TTE->isArgumentType())
1339    JOS.attribute("argType", createQualType(TTE->getArgumentType()));
1340}
1341
1342void JSONNodeDumper::VisitSizeOfPackExpr(const SizeOfPackExpr *SOPE) {
1343  VisitNamedDecl(SOPE->getPack());
1344}
1345
1346void JSONNodeDumper::VisitUnresolvedLookupExpr(
1347    const UnresolvedLookupExpr *ULE) {
1348  JOS.attribute("usesADL", ULE->requiresADL());
1349  JOS.attribute("name", ULE->getName().getAsString());
1350
1351  JOS.attributeArray("lookups", [this, ULE] {
1352    for (const NamedDecl *D : ULE->decls())
1353      JOS.value(createBareDeclRef(D));
1354  });
1355}
1356
1357void JSONNodeDumper::VisitAddrLabelExpr(const AddrLabelExpr *ALE) {
1358  JOS.attribute("name", ALE->getLabel()->getName());
1359  JOS.attribute("labelDeclId", createPointerRepresentation(ALE->getLabel()));
1360}
1361
1362void JSONNodeDumper::VisitCXXTypeidExpr(const CXXTypeidExpr *CTE) {
1363  if (CTE->isTypeOperand()) {
1364    QualType Adjusted = CTE->getTypeOperand(Ctx);
1365    QualType Unadjusted = CTE->getTypeOperandSourceInfo()->getType();
1366    JOS.attribute("typeArg", createQualType(Unadjusted));
1367    if (Adjusted != Unadjusted)
1368      JOS.attribute("adjustedTypeArg", createQualType(Adjusted));
1369  }
1370}
1371
1372void JSONNodeDumper::VisitConstantExpr(const ConstantExpr *CE) {
1373  if (CE->getResultAPValueKind() != APValue::None)
1374    Visit(CE->getAPValueResult(), CE->getType());
1375}
1376
1377void JSONNodeDumper::VisitInitListExpr(const InitListExpr *ILE) {
1378  if (const FieldDecl *FD = ILE->getInitializedFieldInUnion())
1379    JOS.attribute("field", createBareDeclRef(FD));
1380}
1381
1382void JSONNodeDumper::VisitGenericSelectionExpr(
1383    const GenericSelectionExpr *GSE) {
1384  attributeOnlyIfTrue("resultDependent", GSE->isResultDependent());
1385}
1386
1387void JSONNodeDumper::VisitCXXUnresolvedConstructExpr(
1388    const CXXUnresolvedConstructExpr *UCE) {
1389  if (UCE->getType() != UCE->getTypeAsWritten())
1390    JOS.attribute("typeAsWritten", createQualType(UCE->getTypeAsWritten()));
1391  attributeOnlyIfTrue("list", UCE->isListInitialization());
1392}
1393
1394void JSONNodeDumper::VisitCXXConstructExpr(const CXXConstructExpr *CE) {
1395  CXXConstructorDecl *Ctor = CE->getConstructor();
1396  JOS.attribute("ctorType", createQualType(Ctor->getType()));
1397  attributeOnlyIfTrue("elidable", CE->isElidable());
1398  attributeOnlyIfTrue("list", CE->isListInitialization());
1399  attributeOnlyIfTrue("initializer_list", CE->isStdInitListInitialization());
1400  attributeOnlyIfTrue("zeroing", CE->requiresZeroInitialization());
1401  attributeOnlyIfTrue("hadMultipleCandidates", CE->hadMultipleCandidates());
1402
1403  switch (CE->getConstructionKind()) {
1404  case CXXConstructExpr::CK_Complete:
1405    JOS.attribute("constructionKind", "complete");
1406    break;
1407  case CXXConstructExpr::CK_Delegating:
1408    JOS.attribute("constructionKind", "delegating");
1409    break;
1410  case CXXConstructExpr::CK_NonVirtualBase:
1411    JOS.attribute("constructionKind", "non-virtual base");
1412    break;
1413  case CXXConstructExpr::CK_VirtualBase:
1414    JOS.attribute("constructionKind", "virtual base");
1415    break;
1416  }
1417}
1418
1419void JSONNodeDumper::VisitExprWithCleanups(const ExprWithCleanups *EWC) {
1420  attributeOnlyIfTrue("cleanupsHaveSideEffects",
1421                      EWC->cleanupsHaveSideEffects());
1422  if (EWC->getNumObjects()) {
1423    JOS.attributeArray("cleanups", [this, EWC] {
1424      for (const ExprWithCleanups::CleanupObject &CO : EWC->getObjects())
1425        if (auto *BD = CO.dyn_cast<BlockDecl *>()) {
1426          JOS.value(createBareDeclRef(BD));
1427        } else if (auto *CLE = CO.dyn_cast<CompoundLiteralExpr *>()) {
1428          llvm::json::Object Obj;
1429          Obj["id"] = createPointerRepresentation(CLE);
1430          Obj["kind"] = CLE->getStmtClassName();
1431          JOS.value(std::move(Obj));
1432        } else {
1433          llvm_unreachable("unexpected cleanup object type");
1434        }
1435    });
1436  }
1437}
1438
1439void JSONNodeDumper::VisitCXXBindTemporaryExpr(
1440    const CXXBindTemporaryExpr *BTE) {
1441  const CXXTemporary *Temp = BTE->getTemporary();
1442  JOS.attribute("temp", createPointerRepresentation(Temp));
1443  if (const CXXDestructorDecl *Dtor = Temp->getDestructor())
1444    JOS.attribute("dtor", createBareDeclRef(Dtor));
1445}
1446
1447void JSONNodeDumper::VisitMaterializeTemporaryExpr(
1448    const MaterializeTemporaryExpr *MTE) {
1449  if (const ValueDecl *VD = MTE->getExtendingDecl())
1450    JOS.attribute("extendingDecl", createBareDeclRef(VD));
1451
1452  switch (MTE->getStorageDuration()) {
1453  case SD_Automatic:
1454    JOS.attribute("storageDuration", "automatic");
1455    break;
1456  case SD_Dynamic:
1457    JOS.attribute("storageDuration", "dynamic");
1458    break;
1459  case SD_FullExpression:
1460    JOS.attribute("storageDuration", "full expression");
1461    break;
1462  case SD_Static:
1463    JOS.attribute("storageDuration", "static");
1464    break;
1465  case SD_Thread:
1466    JOS.attribute("storageDuration", "thread");
1467    break;
1468  }
1469
1470  attributeOnlyIfTrue("boundToLValueRef", MTE->isBoundToLvalueReference());
1471}
1472
1473void JSONNodeDumper::VisitCXXDependentScopeMemberExpr(
1474    const CXXDependentScopeMemberExpr *DSME) {
1475  JOS.attribute("isArrow", DSME->isArrow());
1476  JOS.attribute("member", DSME->getMember().getAsString());
1477  attributeOnlyIfTrue("hasTemplateKeyword", DSME->hasTemplateKeyword());
1478  attributeOnlyIfTrue("hasExplicitTemplateArgs",
1479                      DSME->hasExplicitTemplateArgs());
1480
1481  if (DSME->getNumTemplateArgs()) {
1482    JOS.attributeArray("explicitTemplateArgs", [DSME, this] {
1483      for (const TemplateArgumentLoc &TAL : DSME->template_arguments())
1484        JOS.object(
1485            [&TAL, this] { Visit(TAL.getArgument(), TAL.getSourceRange()); });
1486    });
1487  }
1488}
1489
1490void JSONNodeDumper::VisitRequiresExpr(const RequiresExpr *RE) {
1491  if (!RE->isValueDependent())
1492    JOS.attribute("satisfied", RE->isSatisfied());
1493}
1494
1495void JSONNodeDumper::VisitIntegerLiteral(const IntegerLiteral *IL) {
1496  llvm::SmallString<16> Buffer;
1497  IL->getValue().toString(Buffer,
1498                          /*Radix=*/10, IL->getType()->isSignedIntegerType());
1499  JOS.attribute("value", Buffer);
1500}
1501void JSONNodeDumper::VisitCharacterLiteral(const CharacterLiteral *CL) {
1502  // FIXME: This should probably print the character literal as a string,
1503  // rather than as a numerical value. It would be nice if the behavior matched
1504  // what we do to print a string literal; right now, it is impossible to tell
1505  // the difference between 'a' and L'a' in C from the JSON output.
1506  JOS.attribute("value", CL->getValue());
1507}
1508void JSONNodeDumper::VisitFixedPointLiteral(const FixedPointLiteral *FPL) {
1509  JOS.attribute("value", FPL->getValueAsString(/*Radix=*/10));
1510}
1511void JSONNodeDumper::VisitFloatingLiteral(const FloatingLiteral *FL) {
1512  llvm::SmallString<16> Buffer;
1513  FL->getValue().toString(Buffer);
1514  JOS.attribute("value", Buffer);
1515}
1516void JSONNodeDumper::VisitStringLiteral(const StringLiteral *SL) {
1517  std::string Buffer;
1518  llvm::raw_string_ostream SS(Buffer);
1519  SL->outputString(SS);
1520  JOS.attribute("value", SS.str());
1521}
1522void JSONNodeDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *BLE) {
1523  JOS.attribute("value", BLE->getValue());
1524}
1525
1526void JSONNodeDumper::VisitIfStmt(const IfStmt *IS) {
1527  attributeOnlyIfTrue("hasInit", IS->hasInitStorage());
1528  attributeOnlyIfTrue("hasVar", IS->hasVarStorage());
1529  attributeOnlyIfTrue("hasElse", IS->hasElseStorage());
1530  attributeOnlyIfTrue("isConstexpr", IS->isConstexpr());
1531  attributeOnlyIfTrue("isConsteval", IS->isConsteval());
1532  attributeOnlyIfTrue("constevalIsNegated", IS->isNegatedConsteval());
1533}
1534
1535void JSONNodeDumper::VisitSwitchStmt(const SwitchStmt *SS) {
1536  attributeOnlyIfTrue("hasInit", SS->hasInitStorage());
1537  attributeOnlyIfTrue("hasVar", SS->hasVarStorage());
1538}
1539void JSONNodeDumper::VisitCaseStmt(const CaseStmt *CS) {
1540  attributeOnlyIfTrue("isGNURange", CS->caseStmtIsGNURange());
1541}
1542
1543void JSONNodeDumper::VisitLabelStmt(const LabelStmt *LS) {
1544  JOS.attribute("name", LS->getName());
1545  JOS.attribute("declId", createPointerRepresentation(LS->getDecl()));
1546  attributeOnlyIfTrue("sideEntry", LS->isSideEntry());
1547}
1548void JSONNodeDumper::VisitGotoStmt(const GotoStmt *GS) {
1549  JOS.attribute("targetLabelDeclId",
1550                createPointerRepresentation(GS->getLabel()));
1551}
1552
1553void JSONNodeDumper::VisitWhileStmt(const WhileStmt *WS) {
1554  attributeOnlyIfTrue("hasVar", WS->hasVarStorage());
1555}
1556
1557void JSONNodeDumper::VisitObjCAtCatchStmt(const ObjCAtCatchStmt* OACS) {
1558  // FIXME: it would be nice for the ASTNodeTraverser would handle the catch
1559  // parameter the same way for C++ and ObjC rather. In this case, C++ gets a
1560  // null child node and ObjC gets no child node.
1561  attributeOnlyIfTrue("isCatchAll", OACS->getCatchParamDecl() == nullptr);
1562}
1563
1564void JSONNodeDumper::VisitNullTemplateArgument(const TemplateArgument &TA) {
1565  JOS.attribute("isNull", true);
1566}
1567void JSONNodeDumper::VisitTypeTemplateArgument(const TemplateArgument &TA) {
1568  JOS.attribute("type", createQualType(TA.getAsType()));
1569}
1570void JSONNodeDumper::VisitDeclarationTemplateArgument(
1571    const TemplateArgument &TA) {
1572  JOS.attribute("decl", createBareDeclRef(TA.getAsDecl()));
1573}
1574void JSONNodeDumper::VisitNullPtrTemplateArgument(const TemplateArgument &TA) {
1575  JOS.attribute("isNullptr", true);
1576}
1577void JSONNodeDumper::VisitIntegralTemplateArgument(const TemplateArgument &TA) {
1578  JOS.attribute("value", TA.getAsIntegral().getSExtValue());
1579}
1580void JSONNodeDumper::VisitTemplateTemplateArgument(const TemplateArgument &TA) {
1581  // FIXME: cannot just call dump() on the argument, as that doesn't specify
1582  // the output format.
1583}
1584void JSONNodeDumper::VisitTemplateExpansionTemplateArgument(
1585    const TemplateArgument &TA) {
1586  // FIXME: cannot just call dump() on the argument, as that doesn't specify
1587  // the output format.
1588}
1589void JSONNodeDumper::VisitExpressionTemplateArgument(
1590    const TemplateArgument &TA) {
1591  JOS.attribute("isExpr", true);
1592}
1593void JSONNodeDumper::VisitPackTemplateArgument(const TemplateArgument &TA) {
1594  JOS.attribute("isPack", true);
1595}
1596
1597StringRef JSONNodeDumper::getCommentCommandName(unsigned CommandID) const {
1598  if (Traits)
1599    return Traits->getCommandInfo(CommandID)->Name;
1600  if (const comments::CommandInfo *Info =
1601          comments::CommandTraits::getBuiltinCommandInfo(CommandID))
1602    return Info->Name;
1603  return "<invalid>";
1604}
1605
1606void JSONNodeDumper::visitTextComment(const comments::TextComment *C,
1607                                      const comments::FullComment *) {
1608  JOS.attribute("text", C->getText());
1609}
1610
1611void JSONNodeDumper::visitInlineCommandComment(
1612    const comments::InlineCommandComment *C, const comments::FullComment *) {
1613  JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1614
1615  switch (C->getRenderKind()) {
1616  case comments::InlineCommandComment::RenderNormal:
1617    JOS.attribute("renderKind", "normal");
1618    break;
1619  case comments::InlineCommandComment::RenderBold:
1620    JOS.attribute("renderKind", "bold");
1621    break;
1622  case comments::InlineCommandComment::RenderEmphasized:
1623    JOS.attribute("renderKind", "emphasized");
1624    break;
1625  case comments::InlineCommandComment::RenderMonospaced:
1626    JOS.attribute("renderKind", "monospaced");
1627    break;
1628  case comments::InlineCommandComment::RenderAnchor:
1629    JOS.attribute("renderKind", "anchor");
1630    break;
1631  }
1632
1633  llvm::json::Array Args;
1634  for (unsigned I = 0, E = C->getNumArgs(); I < E; ++I)
1635    Args.push_back(C->getArgText(I));
1636
1637  if (!Args.empty())
1638    JOS.attribute("args", std::move(Args));
1639}
1640
1641void JSONNodeDumper::visitHTMLStartTagComment(
1642    const comments::HTMLStartTagComment *C, const comments::FullComment *) {
1643  JOS.attribute("name", C->getTagName());
1644  attributeOnlyIfTrue("selfClosing", C->isSelfClosing());
1645  attributeOnlyIfTrue("malformed", C->isMalformed());
1646
1647  llvm::json::Array Attrs;
1648  for (unsigned I = 0, E = C->getNumAttrs(); I < E; ++I)
1649    Attrs.push_back(
1650        {{"name", C->getAttr(I).Name}, {"value", C->getAttr(I).Value}});
1651
1652  if (!Attrs.empty())
1653    JOS.attribute("attrs", std::move(Attrs));
1654}
1655
1656void JSONNodeDumper::visitHTMLEndTagComment(
1657    const comments::HTMLEndTagComment *C, const comments::FullComment *) {
1658  JOS.attribute("name", C->getTagName());
1659}
1660
1661void JSONNodeDumper::visitBlockCommandComment(
1662    const comments::BlockCommandComment *C, const comments::FullComment *) {
1663  JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1664
1665  llvm::json::Array Args;
1666  for (unsigned I = 0, E = C->getNumArgs(); I < E; ++I)
1667    Args.push_back(C->getArgText(I));
1668
1669  if (!Args.empty())
1670    JOS.attribute("args", std::move(Args));
1671}
1672
1673void JSONNodeDumper::visitParamCommandComment(
1674    const comments::ParamCommandComment *C, const comments::FullComment *FC) {
1675  switch (C->getDirection()) {
1676  case comments::ParamCommandComment::In:
1677    JOS.attribute("direction", "in");
1678    break;
1679  case comments::ParamCommandComment::Out:
1680    JOS.attribute("direction", "out");
1681    break;
1682  case comments::ParamCommandComment::InOut:
1683    JOS.attribute("direction", "in,out");
1684    break;
1685  }
1686  attributeOnlyIfTrue("explicit", C->isDirectionExplicit());
1687
1688  if (C->hasParamName())
1689    JOS.attribute("param", C->isParamIndexValid() ? C->getParamName(FC)
1690                                                  : C->getParamNameAsWritten());
1691
1692  if (C->isParamIndexValid() && !C->isVarArgParam())
1693    JOS.attribute("paramIdx", C->getParamIndex());
1694}
1695
1696void JSONNodeDumper::visitTParamCommandComment(
1697    const comments::TParamCommandComment *C, const comments::FullComment *FC) {
1698  if (C->hasParamName())
1699    JOS.attribute("param", C->isPositionValid() ? C->getParamName(FC)
1700                                                : C->getParamNameAsWritten());
1701  if (C->isPositionValid()) {
1702    llvm::json::Array Positions;
1703    for (unsigned I = 0, E = C->getDepth(); I < E; ++I)
1704      Positions.push_back(C->getIndex(I));
1705
1706    if (!Positions.empty())
1707      JOS.attribute("positions", std::move(Positions));
1708  }
1709}
1710
1711void JSONNodeDumper::visitVerbatimBlockComment(
1712    const comments::VerbatimBlockComment *C, const comments::FullComment *) {
1713  JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1714  JOS.attribute("closeName", C->getCloseName());
1715}
1716
1717void JSONNodeDumper::visitVerbatimBlockLineComment(
1718    const comments::VerbatimBlockLineComment *C,
1719    const comments::FullComment *) {
1720  JOS.attribute("text", C->getText());
1721}
1722
1723void JSONNodeDumper::visitVerbatimLineComment(
1724    const comments::VerbatimLineComment *C, const comments::FullComment *) {
1725  JOS.attribute("text", C->getText());
1726}
1727
1728llvm::json::Object JSONNodeDumper::createFPOptions(FPOptionsOverride FPO) {
1729  llvm::json::Object Ret;
1730#define OPTION(NAME, TYPE, WIDTH, PREVIOUS)                                    \
1731  if (FPO.has##NAME##Override())                                               \
1732    Ret.try_emplace(#NAME, static_cast<unsigned>(FPO.get##NAME##Override()));
1733#include "clang/Basic/FPOptions.def"
1734  return Ret;
1735}
1736
1737void JSONNodeDumper::VisitCompoundStmt(const CompoundStmt *S) {
1738  VisitStmt(S);
1739  if (S->hasStoredFPFeatures())
1740    JOS.attribute("fpoptions", createFPOptions(S->getStoredFPFeatures()));
1741}
1742