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