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  }
620}
621
622void JSONNodeDumper::VisitUnresolvedUsingType(const UnresolvedUsingType *UUT) {
623  JOS.attribute("decl", createBareDeclRef(UUT->getDecl()));
624}
625
626void JSONNodeDumper::VisitUnaryTransformType(const UnaryTransformType *UTT) {
627  switch (UTT->getUTTKind()) {
628  case UnaryTransformType::EnumUnderlyingType:
629    JOS.attribute("transformKind", "underlying_type");
630    break;
631  }
632}
633
634void JSONNodeDumper::VisitTagType(const TagType *TT) {
635  JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
636}
637
638void JSONNodeDumper::VisitTemplateTypeParmType(
639    const TemplateTypeParmType *TTPT) {
640  JOS.attribute("depth", TTPT->getDepth());
641  JOS.attribute("index", TTPT->getIndex());
642  attributeOnlyIfTrue("isPack", TTPT->isParameterPack());
643  JOS.attribute("decl", createBareDeclRef(TTPT->getDecl()));
644}
645
646void JSONNodeDumper::VisitAutoType(const AutoType *AT) {
647  JOS.attribute("undeduced", !AT->isDeduced());
648  switch (AT->getKeyword()) {
649  case AutoTypeKeyword::Auto:
650    JOS.attribute("typeKeyword", "auto");
651    break;
652  case AutoTypeKeyword::DecltypeAuto:
653    JOS.attribute("typeKeyword", "decltype(auto)");
654    break;
655  case AutoTypeKeyword::GNUAutoType:
656    JOS.attribute("typeKeyword", "__auto_type");
657    break;
658  }
659}
660
661void JSONNodeDumper::VisitTemplateSpecializationType(
662    const TemplateSpecializationType *TST) {
663  attributeOnlyIfTrue("isAlias", TST->isTypeAlias());
664
665  std::string Str;
666  llvm::raw_string_ostream OS(Str);
667  TST->getTemplateName().print(OS, PrintPolicy);
668  JOS.attribute("templateName", OS.str());
669}
670
671void JSONNodeDumper::VisitInjectedClassNameType(
672    const InjectedClassNameType *ICNT) {
673  JOS.attribute("decl", createBareDeclRef(ICNT->getDecl()));
674}
675
676void JSONNodeDumper::VisitObjCInterfaceType(const ObjCInterfaceType *OIT) {
677  JOS.attribute("decl", createBareDeclRef(OIT->getDecl()));
678}
679
680void JSONNodeDumper::VisitPackExpansionType(const PackExpansionType *PET) {
681  if (llvm::Optional<unsigned> N = PET->getNumExpansions())
682    JOS.attribute("numExpansions", *N);
683}
684
685void JSONNodeDumper::VisitElaboratedType(const ElaboratedType *ET) {
686  if (const NestedNameSpecifier *NNS = ET->getQualifier()) {
687    std::string Str;
688    llvm::raw_string_ostream OS(Str);
689    NNS->print(OS, PrintPolicy, /*ResolveTemplateArgs*/ true);
690    JOS.attribute("qualifier", OS.str());
691  }
692  if (const TagDecl *TD = ET->getOwnedTagDecl())
693    JOS.attribute("ownedTagDecl", createBareDeclRef(TD));
694}
695
696void JSONNodeDumper::VisitMacroQualifiedType(const MacroQualifiedType *MQT) {
697  JOS.attribute("macroName", MQT->getMacroIdentifier()->getName());
698}
699
700void JSONNodeDumper::VisitMemberPointerType(const MemberPointerType *MPT) {
701  attributeOnlyIfTrue("isData", MPT->isMemberDataPointer());
702  attributeOnlyIfTrue("isFunction", MPT->isMemberFunctionPointer());
703}
704
705void JSONNodeDumper::VisitNamedDecl(const NamedDecl *ND) {
706  if (ND && ND->getDeclName()) {
707    JOS.attribute("name", ND->getNameAsString());
708    std::string MangledName = ASTNameGen.getName(ND);
709    if (!MangledName.empty())
710      JOS.attribute("mangledName", MangledName);
711  }
712}
713
714void JSONNodeDumper::VisitTypedefDecl(const TypedefDecl *TD) {
715  VisitNamedDecl(TD);
716  JOS.attribute("type", createQualType(TD->getUnderlyingType()));
717}
718
719void JSONNodeDumper::VisitTypeAliasDecl(const TypeAliasDecl *TAD) {
720  VisitNamedDecl(TAD);
721  JOS.attribute("type", createQualType(TAD->getUnderlyingType()));
722}
723
724void JSONNodeDumper::VisitNamespaceDecl(const NamespaceDecl *ND) {
725  VisitNamedDecl(ND);
726  attributeOnlyIfTrue("isInline", ND->isInline());
727  if (!ND->isOriginalNamespace())
728    JOS.attribute("originalNamespace",
729                  createBareDeclRef(ND->getOriginalNamespace()));
730}
731
732void JSONNodeDumper::VisitUsingDirectiveDecl(const UsingDirectiveDecl *UDD) {
733  JOS.attribute("nominatedNamespace",
734                createBareDeclRef(UDD->getNominatedNamespace()));
735}
736
737void JSONNodeDumper::VisitNamespaceAliasDecl(const NamespaceAliasDecl *NAD) {
738  VisitNamedDecl(NAD);
739  JOS.attribute("aliasedNamespace",
740                createBareDeclRef(NAD->getAliasedNamespace()));
741}
742
743void JSONNodeDumper::VisitUsingDecl(const UsingDecl *UD) {
744  std::string Name;
745  if (const NestedNameSpecifier *NNS = UD->getQualifier()) {
746    llvm::raw_string_ostream SOS(Name);
747    NNS->print(SOS, UD->getASTContext().getPrintingPolicy());
748  }
749  Name += UD->getNameAsString();
750  JOS.attribute("name", Name);
751}
752
753void JSONNodeDumper::VisitUsingShadowDecl(const UsingShadowDecl *USD) {
754  JOS.attribute("target", createBareDeclRef(USD->getTargetDecl()));
755}
756
757void JSONNodeDumper::VisitVarDecl(const VarDecl *VD) {
758  VisitNamedDecl(VD);
759  JOS.attribute("type", createQualType(VD->getType()));
760
761  StorageClass SC = VD->getStorageClass();
762  if (SC != SC_None)
763    JOS.attribute("storageClass", VarDecl::getStorageClassSpecifierString(SC));
764  switch (VD->getTLSKind()) {
765  case VarDecl::TLS_Dynamic: JOS.attribute("tls", "dynamic"); break;
766  case VarDecl::TLS_Static: JOS.attribute("tls", "static"); break;
767  case VarDecl::TLS_None: break;
768  }
769  attributeOnlyIfTrue("nrvo", VD->isNRVOVariable());
770  attributeOnlyIfTrue("inline", VD->isInline());
771  attributeOnlyIfTrue("constexpr", VD->isConstexpr());
772  attributeOnlyIfTrue("modulePrivate", VD->isModulePrivate());
773  if (VD->hasInit()) {
774    switch (VD->getInitStyle()) {
775    case VarDecl::CInit: JOS.attribute("init", "c");  break;
776    case VarDecl::CallInit: JOS.attribute("init", "call"); break;
777    case VarDecl::ListInit: JOS.attribute("init", "list"); break;
778    }
779  }
780  attributeOnlyIfTrue("isParameterPack", VD->isParameterPack());
781}
782
783void JSONNodeDumper::VisitFieldDecl(const FieldDecl *FD) {
784  VisitNamedDecl(FD);
785  JOS.attribute("type", createQualType(FD->getType()));
786  attributeOnlyIfTrue("mutable", FD->isMutable());
787  attributeOnlyIfTrue("modulePrivate", FD->isModulePrivate());
788  attributeOnlyIfTrue("isBitfield", FD->isBitField());
789  attributeOnlyIfTrue("hasInClassInitializer", FD->hasInClassInitializer());
790}
791
792void JSONNodeDumper::VisitFunctionDecl(const FunctionDecl *FD) {
793  VisitNamedDecl(FD);
794  JOS.attribute("type", createQualType(FD->getType()));
795  StorageClass SC = FD->getStorageClass();
796  if (SC != SC_None)
797    JOS.attribute("storageClass", VarDecl::getStorageClassSpecifierString(SC));
798  attributeOnlyIfTrue("inline", FD->isInlineSpecified());
799  attributeOnlyIfTrue("virtual", FD->isVirtualAsWritten());
800  attributeOnlyIfTrue("pure", FD->isPure());
801  attributeOnlyIfTrue("explicitlyDeleted", FD->isDeletedAsWritten());
802  attributeOnlyIfTrue("constexpr", FD->isConstexpr());
803  attributeOnlyIfTrue("variadic", FD->isVariadic());
804
805  if (FD->isDefaulted())
806    JOS.attribute("explicitlyDefaulted",
807                  FD->isDeleted() ? "deleted" : "default");
808}
809
810void JSONNodeDumper::VisitEnumDecl(const EnumDecl *ED) {
811  VisitNamedDecl(ED);
812  if (ED->isFixed())
813    JOS.attribute("fixedUnderlyingType", createQualType(ED->getIntegerType()));
814  if (ED->isScoped())
815    JOS.attribute("scopedEnumTag",
816                  ED->isScopedUsingClassTag() ? "class" : "struct");
817}
818void JSONNodeDumper::VisitEnumConstantDecl(const EnumConstantDecl *ECD) {
819  VisitNamedDecl(ECD);
820  JOS.attribute("type", createQualType(ECD->getType()));
821}
822
823void JSONNodeDumper::VisitRecordDecl(const RecordDecl *RD) {
824  VisitNamedDecl(RD);
825  JOS.attribute("tagUsed", RD->getKindName());
826  attributeOnlyIfTrue("completeDefinition", RD->isCompleteDefinition());
827}
828void JSONNodeDumper::VisitCXXRecordDecl(const CXXRecordDecl *RD) {
829  VisitRecordDecl(RD);
830
831  // All other information requires a complete definition.
832  if (!RD->isCompleteDefinition())
833    return;
834
835  JOS.attribute("definitionData", createCXXRecordDefinitionData(RD));
836  if (RD->getNumBases()) {
837    JOS.attributeArray("bases", [this, RD] {
838      for (const auto &Spec : RD->bases())
839        JOS.value(createCXXBaseSpecifier(Spec));
840    });
841  }
842}
843
844void JSONNodeDumper::VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D) {
845  VisitNamedDecl(D);
846  JOS.attribute("tagUsed", D->wasDeclaredWithTypename() ? "typename" : "class");
847  JOS.attribute("depth", D->getDepth());
848  JOS.attribute("index", D->getIndex());
849  attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
850
851  if (D->hasDefaultArgument())
852    JOS.attributeObject("defaultArg", [=] {
853      Visit(D->getDefaultArgument(), SourceRange(),
854            D->getDefaultArgStorage().getInheritedFrom(),
855            D->defaultArgumentWasInherited() ? "inherited from" : "previous");
856    });
857}
858
859void JSONNodeDumper::VisitNonTypeTemplateParmDecl(
860    const NonTypeTemplateParmDecl *D) {
861  VisitNamedDecl(D);
862  JOS.attribute("type", createQualType(D->getType()));
863  JOS.attribute("depth", D->getDepth());
864  JOS.attribute("index", D->getIndex());
865  attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
866
867  if (D->hasDefaultArgument())
868    JOS.attributeObject("defaultArg", [=] {
869      Visit(D->getDefaultArgument(), SourceRange(),
870            D->getDefaultArgStorage().getInheritedFrom(),
871            D->defaultArgumentWasInherited() ? "inherited from" : "previous");
872    });
873}
874
875void JSONNodeDumper::VisitTemplateTemplateParmDecl(
876    const TemplateTemplateParmDecl *D) {
877  VisitNamedDecl(D);
878  JOS.attribute("depth", D->getDepth());
879  JOS.attribute("index", D->getIndex());
880  attributeOnlyIfTrue("isParameterPack", D->isParameterPack());
881
882  if (D->hasDefaultArgument())
883    JOS.attributeObject("defaultArg", [=] {
884      Visit(D->getDefaultArgument().getArgument(),
885            D->getDefaultArgStorage().getInheritedFrom()->getSourceRange(),
886            D->getDefaultArgStorage().getInheritedFrom(),
887            D->defaultArgumentWasInherited() ? "inherited from" : "previous");
888    });
889}
890
891void JSONNodeDumper::VisitLinkageSpecDecl(const LinkageSpecDecl *LSD) {
892  StringRef Lang;
893  switch (LSD->getLanguage()) {
894  case LinkageSpecDecl::lang_c: Lang = "C"; break;
895  case LinkageSpecDecl::lang_cxx: Lang = "C++"; break;
896  }
897  JOS.attribute("language", Lang);
898  attributeOnlyIfTrue("hasBraces", LSD->hasBraces());
899}
900
901void JSONNodeDumper::VisitAccessSpecDecl(const AccessSpecDecl *ASD) {
902  JOS.attribute("access", createAccessSpecifier(ASD->getAccess()));
903}
904
905void JSONNodeDumper::VisitFriendDecl(const FriendDecl *FD) {
906  if (const TypeSourceInfo *T = FD->getFriendType())
907    JOS.attribute("type", createQualType(T->getType()));
908}
909
910void JSONNodeDumper::VisitObjCIvarDecl(const ObjCIvarDecl *D) {
911  VisitNamedDecl(D);
912  JOS.attribute("type", createQualType(D->getType()));
913  attributeOnlyIfTrue("synthesized", D->getSynthesize());
914  switch (D->getAccessControl()) {
915  case ObjCIvarDecl::None: JOS.attribute("access", "none"); break;
916  case ObjCIvarDecl::Private: JOS.attribute("access", "private"); break;
917  case ObjCIvarDecl::Protected: JOS.attribute("access", "protected"); break;
918  case ObjCIvarDecl::Public: JOS.attribute("access", "public"); break;
919  case ObjCIvarDecl::Package: JOS.attribute("access", "package"); break;
920  }
921}
922
923void JSONNodeDumper::VisitObjCMethodDecl(const ObjCMethodDecl *D) {
924  VisitNamedDecl(D);
925  JOS.attribute("returnType", createQualType(D->getReturnType()));
926  JOS.attribute("instance", D->isInstanceMethod());
927  attributeOnlyIfTrue("variadic", D->isVariadic());
928}
929
930void JSONNodeDumper::VisitObjCTypeParamDecl(const ObjCTypeParamDecl *D) {
931  VisitNamedDecl(D);
932  JOS.attribute("type", createQualType(D->getUnderlyingType()));
933  attributeOnlyIfTrue("bounded", D->hasExplicitBound());
934  switch (D->getVariance()) {
935  case ObjCTypeParamVariance::Invariant:
936    break;
937  case ObjCTypeParamVariance::Covariant:
938    JOS.attribute("variance", "covariant");
939    break;
940  case ObjCTypeParamVariance::Contravariant:
941    JOS.attribute("variance", "contravariant");
942    break;
943  }
944}
945
946void JSONNodeDumper::VisitObjCCategoryDecl(const ObjCCategoryDecl *D) {
947  VisitNamedDecl(D);
948  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
949  JOS.attribute("implementation", createBareDeclRef(D->getImplementation()));
950
951  llvm::json::Array Protocols;
952  for (const auto* P : D->protocols())
953    Protocols.push_back(createBareDeclRef(P));
954  if (!Protocols.empty())
955    JOS.attribute("protocols", std::move(Protocols));
956}
957
958void JSONNodeDumper::VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
959  VisitNamedDecl(D);
960  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
961  JOS.attribute("categoryDecl", createBareDeclRef(D->getCategoryDecl()));
962}
963
964void JSONNodeDumper::VisitObjCProtocolDecl(const ObjCProtocolDecl *D) {
965  VisitNamedDecl(D);
966
967  llvm::json::Array Protocols;
968  for (const auto *P : D->protocols())
969    Protocols.push_back(createBareDeclRef(P));
970  if (!Protocols.empty())
971    JOS.attribute("protocols", std::move(Protocols));
972}
973
974void JSONNodeDumper::VisitObjCInterfaceDecl(const ObjCInterfaceDecl *D) {
975  VisitNamedDecl(D);
976  JOS.attribute("super", createBareDeclRef(D->getSuperClass()));
977  JOS.attribute("implementation", createBareDeclRef(D->getImplementation()));
978
979  llvm::json::Array Protocols;
980  for (const auto* P : D->protocols())
981    Protocols.push_back(createBareDeclRef(P));
982  if (!Protocols.empty())
983    JOS.attribute("protocols", std::move(Protocols));
984}
985
986void JSONNodeDumper::VisitObjCImplementationDecl(
987    const ObjCImplementationDecl *D) {
988  VisitNamedDecl(D);
989  JOS.attribute("super", createBareDeclRef(D->getSuperClass()));
990  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
991}
992
993void JSONNodeDumper::VisitObjCCompatibleAliasDecl(
994    const ObjCCompatibleAliasDecl *D) {
995  VisitNamedDecl(D);
996  JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
997}
998
999void JSONNodeDumper::VisitObjCPropertyDecl(const ObjCPropertyDecl *D) {
1000  VisitNamedDecl(D);
1001  JOS.attribute("type", createQualType(D->getType()));
1002
1003  switch (D->getPropertyImplementation()) {
1004  case ObjCPropertyDecl::None: break;
1005  case ObjCPropertyDecl::Required: JOS.attribute("control", "required"); break;
1006  case ObjCPropertyDecl::Optional: JOS.attribute("control", "optional"); break;
1007  }
1008
1009  ObjCPropertyAttribute::Kind Attrs = D->getPropertyAttributes();
1010  if (Attrs != ObjCPropertyAttribute::kind_noattr) {
1011    if (Attrs & ObjCPropertyAttribute::kind_getter)
1012      JOS.attribute("getter", createBareDeclRef(D->getGetterMethodDecl()));
1013    if (Attrs & ObjCPropertyAttribute::kind_setter)
1014      JOS.attribute("setter", createBareDeclRef(D->getSetterMethodDecl()));
1015    attributeOnlyIfTrue("readonly",
1016                        Attrs & ObjCPropertyAttribute::kind_readonly);
1017    attributeOnlyIfTrue("assign", Attrs & ObjCPropertyAttribute::kind_assign);
1018    attributeOnlyIfTrue("readwrite",
1019                        Attrs & ObjCPropertyAttribute::kind_readwrite);
1020    attributeOnlyIfTrue("retain", Attrs & ObjCPropertyAttribute::kind_retain);
1021    attributeOnlyIfTrue("copy", Attrs & ObjCPropertyAttribute::kind_copy);
1022    attributeOnlyIfTrue("nonatomic",
1023                        Attrs & ObjCPropertyAttribute::kind_nonatomic);
1024    attributeOnlyIfTrue("atomic", Attrs & ObjCPropertyAttribute::kind_atomic);
1025    attributeOnlyIfTrue("weak", Attrs & ObjCPropertyAttribute::kind_weak);
1026    attributeOnlyIfTrue("strong", Attrs & ObjCPropertyAttribute::kind_strong);
1027    attributeOnlyIfTrue("unsafe_unretained",
1028                        Attrs & ObjCPropertyAttribute::kind_unsafe_unretained);
1029    attributeOnlyIfTrue("class", Attrs & ObjCPropertyAttribute::kind_class);
1030    attributeOnlyIfTrue("direct", Attrs & ObjCPropertyAttribute::kind_direct);
1031    attributeOnlyIfTrue("nullability",
1032                        Attrs & ObjCPropertyAttribute::kind_nullability);
1033    attributeOnlyIfTrue("null_resettable",
1034                        Attrs & ObjCPropertyAttribute::kind_null_resettable);
1035  }
1036}
1037
1038void JSONNodeDumper::VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl *D) {
1039  VisitNamedDecl(D->getPropertyDecl());
1040  JOS.attribute("implKind", D->getPropertyImplementation() ==
1041                                    ObjCPropertyImplDecl::Synthesize
1042                                ? "synthesize"
1043                                : "dynamic");
1044  JOS.attribute("propertyDecl", createBareDeclRef(D->getPropertyDecl()));
1045  JOS.attribute("ivarDecl", createBareDeclRef(D->getPropertyIvarDecl()));
1046}
1047
1048void JSONNodeDumper::VisitBlockDecl(const BlockDecl *D) {
1049  attributeOnlyIfTrue("variadic", D->isVariadic());
1050  attributeOnlyIfTrue("capturesThis", D->capturesCXXThis());
1051}
1052
1053void JSONNodeDumper::VisitObjCEncodeExpr(const ObjCEncodeExpr *OEE) {
1054  JOS.attribute("encodedType", createQualType(OEE->getEncodedType()));
1055}
1056
1057void JSONNodeDumper::VisitObjCMessageExpr(const ObjCMessageExpr *OME) {
1058  std::string Str;
1059  llvm::raw_string_ostream OS(Str);
1060
1061  OME->getSelector().print(OS);
1062  JOS.attribute("selector", OS.str());
1063
1064  switch (OME->getReceiverKind()) {
1065  case ObjCMessageExpr::Instance:
1066    JOS.attribute("receiverKind", "instance");
1067    break;
1068  case ObjCMessageExpr::Class:
1069    JOS.attribute("receiverKind", "class");
1070    JOS.attribute("classType", createQualType(OME->getClassReceiver()));
1071    break;
1072  case ObjCMessageExpr::SuperInstance:
1073    JOS.attribute("receiverKind", "super (instance)");
1074    JOS.attribute("superType", createQualType(OME->getSuperType()));
1075    break;
1076  case ObjCMessageExpr::SuperClass:
1077    JOS.attribute("receiverKind", "super (class)");
1078    JOS.attribute("superType", createQualType(OME->getSuperType()));
1079    break;
1080  }
1081
1082  QualType CallReturnTy = OME->getCallReturnType(Ctx);
1083  if (OME->getType() != CallReturnTy)
1084    JOS.attribute("callReturnType", createQualType(CallReturnTy));
1085}
1086
1087void JSONNodeDumper::VisitObjCBoxedExpr(const ObjCBoxedExpr *OBE) {
1088  if (const ObjCMethodDecl *MD = OBE->getBoxingMethod()) {
1089    std::string Str;
1090    llvm::raw_string_ostream OS(Str);
1091
1092    MD->getSelector().print(OS);
1093    JOS.attribute("selector", OS.str());
1094  }
1095}
1096
1097void JSONNodeDumper::VisitObjCSelectorExpr(const ObjCSelectorExpr *OSE) {
1098  std::string Str;
1099  llvm::raw_string_ostream OS(Str);
1100
1101  OSE->getSelector().print(OS);
1102  JOS.attribute("selector", OS.str());
1103}
1104
1105void JSONNodeDumper::VisitObjCProtocolExpr(const ObjCProtocolExpr *OPE) {
1106  JOS.attribute("protocol", createBareDeclRef(OPE->getProtocol()));
1107}
1108
1109void JSONNodeDumper::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *OPRE) {
1110  if (OPRE->isImplicitProperty()) {
1111    JOS.attribute("propertyKind", "implicit");
1112    if (const ObjCMethodDecl *MD = OPRE->getImplicitPropertyGetter())
1113      JOS.attribute("getter", createBareDeclRef(MD));
1114    if (const ObjCMethodDecl *MD = OPRE->getImplicitPropertySetter())
1115      JOS.attribute("setter", createBareDeclRef(MD));
1116  } else {
1117    JOS.attribute("propertyKind", "explicit");
1118    JOS.attribute("property", createBareDeclRef(OPRE->getExplicitProperty()));
1119  }
1120
1121  attributeOnlyIfTrue("isSuperReceiver", OPRE->isSuperReceiver());
1122  attributeOnlyIfTrue("isMessagingGetter", OPRE->isMessagingGetter());
1123  attributeOnlyIfTrue("isMessagingSetter", OPRE->isMessagingSetter());
1124}
1125
1126void JSONNodeDumper::VisitObjCSubscriptRefExpr(
1127    const ObjCSubscriptRefExpr *OSRE) {
1128  JOS.attribute("subscriptKind",
1129                OSRE->isArraySubscriptRefExpr() ? "array" : "dictionary");
1130
1131  if (const ObjCMethodDecl *MD = OSRE->getAtIndexMethodDecl())
1132    JOS.attribute("getter", createBareDeclRef(MD));
1133  if (const ObjCMethodDecl *MD = OSRE->setAtIndexMethodDecl())
1134    JOS.attribute("setter", createBareDeclRef(MD));
1135}
1136
1137void JSONNodeDumper::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *OIRE) {
1138  JOS.attribute("decl", createBareDeclRef(OIRE->getDecl()));
1139  attributeOnlyIfTrue("isFreeIvar", OIRE->isFreeIvar());
1140  JOS.attribute("isArrow", OIRE->isArrow());
1141}
1142
1143void JSONNodeDumper::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *OBLE) {
1144  JOS.attribute("value", OBLE->getValue() ? "__objc_yes" : "__objc_no");
1145}
1146
1147void JSONNodeDumper::VisitDeclRefExpr(const DeclRefExpr *DRE) {
1148  JOS.attribute("referencedDecl", createBareDeclRef(DRE->getDecl()));
1149  if (DRE->getDecl() != DRE->getFoundDecl())
1150    JOS.attribute("foundReferencedDecl",
1151                  createBareDeclRef(DRE->getFoundDecl()));
1152  switch (DRE->isNonOdrUse()) {
1153  case NOUR_None: break;
1154  case NOUR_Unevaluated: JOS.attribute("nonOdrUseReason", "unevaluated"); break;
1155  case NOUR_Constant: JOS.attribute("nonOdrUseReason", "constant"); break;
1156  case NOUR_Discarded: JOS.attribute("nonOdrUseReason", "discarded"); break;
1157  }
1158}
1159
1160void JSONNodeDumper::VisitPredefinedExpr(const PredefinedExpr *PE) {
1161  JOS.attribute("name", PredefinedExpr::getIdentKindName(PE->getIdentKind()));
1162}
1163
1164void JSONNodeDumper::VisitUnaryOperator(const UnaryOperator *UO) {
1165  JOS.attribute("isPostfix", UO->isPostfix());
1166  JOS.attribute("opcode", UnaryOperator::getOpcodeStr(UO->getOpcode()));
1167  if (!UO->canOverflow())
1168    JOS.attribute("canOverflow", false);
1169}
1170
1171void JSONNodeDumper::VisitBinaryOperator(const BinaryOperator *BO) {
1172  JOS.attribute("opcode", BinaryOperator::getOpcodeStr(BO->getOpcode()));
1173}
1174
1175void JSONNodeDumper::VisitCompoundAssignOperator(
1176    const CompoundAssignOperator *CAO) {
1177  VisitBinaryOperator(CAO);
1178  JOS.attribute("computeLHSType", createQualType(CAO->getComputationLHSType()));
1179  JOS.attribute("computeResultType",
1180                createQualType(CAO->getComputationResultType()));
1181}
1182
1183void JSONNodeDumper::VisitMemberExpr(const MemberExpr *ME) {
1184  // Note, we always write this Boolean field because the information it conveys
1185  // is critical to understanding the AST node.
1186  ValueDecl *VD = ME->getMemberDecl();
1187  JOS.attribute("name", VD && VD->getDeclName() ? VD->getNameAsString() : "");
1188  JOS.attribute("isArrow", ME->isArrow());
1189  JOS.attribute("referencedMemberDecl", createPointerRepresentation(VD));
1190  switch (ME->isNonOdrUse()) {
1191  case NOUR_None: break;
1192  case NOUR_Unevaluated: JOS.attribute("nonOdrUseReason", "unevaluated"); break;
1193  case NOUR_Constant: JOS.attribute("nonOdrUseReason", "constant"); break;
1194  case NOUR_Discarded: JOS.attribute("nonOdrUseReason", "discarded"); break;
1195  }
1196}
1197
1198void JSONNodeDumper::VisitCXXNewExpr(const CXXNewExpr *NE) {
1199  attributeOnlyIfTrue("isGlobal", NE->isGlobalNew());
1200  attributeOnlyIfTrue("isArray", NE->isArray());
1201  attributeOnlyIfTrue("isPlacement", NE->getNumPlacementArgs() != 0);
1202  switch (NE->getInitializationStyle()) {
1203  case CXXNewExpr::NoInit: break;
1204  case CXXNewExpr::CallInit: JOS.attribute("initStyle", "call"); break;
1205  case CXXNewExpr::ListInit: JOS.attribute("initStyle", "list"); break;
1206  }
1207  if (const FunctionDecl *FD = NE->getOperatorNew())
1208    JOS.attribute("operatorNewDecl", createBareDeclRef(FD));
1209  if (const FunctionDecl *FD = NE->getOperatorDelete())
1210    JOS.attribute("operatorDeleteDecl", createBareDeclRef(FD));
1211}
1212void JSONNodeDumper::VisitCXXDeleteExpr(const CXXDeleteExpr *DE) {
1213  attributeOnlyIfTrue("isGlobal", DE->isGlobalDelete());
1214  attributeOnlyIfTrue("isArray", DE->isArrayForm());
1215  attributeOnlyIfTrue("isArrayAsWritten", DE->isArrayFormAsWritten());
1216  if (const FunctionDecl *FD = DE->getOperatorDelete())
1217    JOS.attribute("operatorDeleteDecl", createBareDeclRef(FD));
1218}
1219
1220void JSONNodeDumper::VisitCXXThisExpr(const CXXThisExpr *TE) {
1221  attributeOnlyIfTrue("implicit", TE->isImplicit());
1222}
1223
1224void JSONNodeDumper::VisitCastExpr(const CastExpr *CE) {
1225  JOS.attribute("castKind", CE->getCastKindName());
1226  llvm::json::Array Path = createCastPath(CE);
1227  if (!Path.empty())
1228    JOS.attribute("path", std::move(Path));
1229  // FIXME: This may not be useful information as it can be obtusely gleaned
1230  // from the inner[] array.
1231  if (const NamedDecl *ND = CE->getConversionFunction())
1232    JOS.attribute("conversionFunc", createBareDeclRef(ND));
1233}
1234
1235void JSONNodeDumper::VisitImplicitCastExpr(const ImplicitCastExpr *ICE) {
1236  VisitCastExpr(ICE);
1237  attributeOnlyIfTrue("isPartOfExplicitCast", ICE->isPartOfExplicitCast());
1238}
1239
1240void JSONNodeDumper::VisitCallExpr(const CallExpr *CE) {
1241  attributeOnlyIfTrue("adl", CE->usesADL());
1242}
1243
1244void JSONNodeDumper::VisitUnaryExprOrTypeTraitExpr(
1245    const UnaryExprOrTypeTraitExpr *TTE) {
1246  JOS.attribute("name", getTraitSpelling(TTE->getKind()));
1247  if (TTE->isArgumentType())
1248    JOS.attribute("argType", createQualType(TTE->getArgumentType()));
1249}
1250
1251void JSONNodeDumper::VisitSizeOfPackExpr(const SizeOfPackExpr *SOPE) {
1252  VisitNamedDecl(SOPE->getPack());
1253}
1254
1255void JSONNodeDumper::VisitUnresolvedLookupExpr(
1256    const UnresolvedLookupExpr *ULE) {
1257  JOS.attribute("usesADL", ULE->requiresADL());
1258  JOS.attribute("name", ULE->getName().getAsString());
1259
1260  JOS.attributeArray("lookups", [this, ULE] {
1261    for (const NamedDecl *D : ULE->decls())
1262      JOS.value(createBareDeclRef(D));
1263  });
1264}
1265
1266void JSONNodeDumper::VisitAddrLabelExpr(const AddrLabelExpr *ALE) {
1267  JOS.attribute("name", ALE->getLabel()->getName());
1268  JOS.attribute("labelDeclId", createPointerRepresentation(ALE->getLabel()));
1269}
1270
1271void JSONNodeDumper::VisitCXXTypeidExpr(const CXXTypeidExpr *CTE) {
1272  if (CTE->isTypeOperand()) {
1273    QualType Adjusted = CTE->getTypeOperand(Ctx);
1274    QualType Unadjusted = CTE->getTypeOperandSourceInfo()->getType();
1275    JOS.attribute("typeArg", createQualType(Unadjusted));
1276    if (Adjusted != Unadjusted)
1277      JOS.attribute("adjustedTypeArg", createQualType(Adjusted));
1278  }
1279}
1280
1281void JSONNodeDumper::VisitConstantExpr(const ConstantExpr *CE) {
1282  if (CE->getResultAPValueKind() != APValue::None)
1283    Visit(CE->getAPValueResult(), CE->getType());
1284}
1285
1286void JSONNodeDumper::VisitInitListExpr(const InitListExpr *ILE) {
1287  if (const FieldDecl *FD = ILE->getInitializedFieldInUnion())
1288    JOS.attribute("field", createBareDeclRef(FD));
1289}
1290
1291void JSONNodeDumper::VisitGenericSelectionExpr(
1292    const GenericSelectionExpr *GSE) {
1293  attributeOnlyIfTrue("resultDependent", GSE->isResultDependent());
1294}
1295
1296void JSONNodeDumper::VisitCXXUnresolvedConstructExpr(
1297    const CXXUnresolvedConstructExpr *UCE) {
1298  if (UCE->getType() != UCE->getTypeAsWritten())
1299    JOS.attribute("typeAsWritten", createQualType(UCE->getTypeAsWritten()));
1300  attributeOnlyIfTrue("list", UCE->isListInitialization());
1301}
1302
1303void JSONNodeDumper::VisitCXXConstructExpr(const CXXConstructExpr *CE) {
1304  CXXConstructorDecl *Ctor = CE->getConstructor();
1305  JOS.attribute("ctorType", createQualType(Ctor->getType()));
1306  attributeOnlyIfTrue("elidable", CE->isElidable());
1307  attributeOnlyIfTrue("list", CE->isListInitialization());
1308  attributeOnlyIfTrue("initializer_list", CE->isStdInitListInitialization());
1309  attributeOnlyIfTrue("zeroing", CE->requiresZeroInitialization());
1310  attributeOnlyIfTrue("hadMultipleCandidates", CE->hadMultipleCandidates());
1311
1312  switch (CE->getConstructionKind()) {
1313  case CXXConstructExpr::CK_Complete:
1314    JOS.attribute("constructionKind", "complete");
1315    break;
1316  case CXXConstructExpr::CK_Delegating:
1317    JOS.attribute("constructionKind", "delegating");
1318    break;
1319  case CXXConstructExpr::CK_NonVirtualBase:
1320    JOS.attribute("constructionKind", "non-virtual base");
1321    break;
1322  case CXXConstructExpr::CK_VirtualBase:
1323    JOS.attribute("constructionKind", "virtual base");
1324    break;
1325  }
1326}
1327
1328void JSONNodeDumper::VisitExprWithCleanups(const ExprWithCleanups *EWC) {
1329  attributeOnlyIfTrue("cleanupsHaveSideEffects",
1330                      EWC->cleanupsHaveSideEffects());
1331  if (EWC->getNumObjects()) {
1332    JOS.attributeArray("cleanups", [this, EWC] {
1333      for (const ExprWithCleanups::CleanupObject &CO : EWC->getObjects())
1334        if (auto *BD = CO.dyn_cast<BlockDecl *>()) {
1335          JOS.value(createBareDeclRef(BD));
1336        } else if (auto *CLE = CO.dyn_cast<CompoundLiteralExpr *>()) {
1337          llvm::json::Object Obj;
1338          Obj["id"] = createPointerRepresentation(CLE);
1339          Obj["kind"] = CLE->getStmtClassName();
1340          JOS.value(std::move(Obj));
1341        } else {
1342          llvm_unreachable("unexpected cleanup object type");
1343        }
1344    });
1345  }
1346}
1347
1348void JSONNodeDumper::VisitCXXBindTemporaryExpr(
1349    const CXXBindTemporaryExpr *BTE) {
1350  const CXXTemporary *Temp = BTE->getTemporary();
1351  JOS.attribute("temp", createPointerRepresentation(Temp));
1352  if (const CXXDestructorDecl *Dtor = Temp->getDestructor())
1353    JOS.attribute("dtor", createBareDeclRef(Dtor));
1354}
1355
1356void JSONNodeDumper::VisitMaterializeTemporaryExpr(
1357    const MaterializeTemporaryExpr *MTE) {
1358  if (const ValueDecl *VD = MTE->getExtendingDecl())
1359    JOS.attribute("extendingDecl", createBareDeclRef(VD));
1360
1361  switch (MTE->getStorageDuration()) {
1362  case SD_Automatic:
1363    JOS.attribute("storageDuration", "automatic");
1364    break;
1365  case SD_Dynamic:
1366    JOS.attribute("storageDuration", "dynamic");
1367    break;
1368  case SD_FullExpression:
1369    JOS.attribute("storageDuration", "full expression");
1370    break;
1371  case SD_Static:
1372    JOS.attribute("storageDuration", "static");
1373    break;
1374  case SD_Thread:
1375    JOS.attribute("storageDuration", "thread");
1376    break;
1377  }
1378
1379  attributeOnlyIfTrue("boundToLValueRef", MTE->isBoundToLvalueReference());
1380}
1381
1382void JSONNodeDumper::VisitCXXDependentScopeMemberExpr(
1383    const CXXDependentScopeMemberExpr *DSME) {
1384  JOS.attribute("isArrow", DSME->isArrow());
1385  JOS.attribute("member", DSME->getMember().getAsString());
1386  attributeOnlyIfTrue("hasTemplateKeyword", DSME->hasTemplateKeyword());
1387  attributeOnlyIfTrue("hasExplicitTemplateArgs",
1388                      DSME->hasExplicitTemplateArgs());
1389
1390  if (DSME->getNumTemplateArgs()) {
1391    JOS.attributeArray("explicitTemplateArgs", [DSME, this] {
1392      for (const TemplateArgumentLoc &TAL : DSME->template_arguments())
1393        JOS.object(
1394            [&TAL, this] { Visit(TAL.getArgument(), TAL.getSourceRange()); });
1395    });
1396  }
1397}
1398
1399void JSONNodeDumper::VisitIntegerLiteral(const IntegerLiteral *IL) {
1400  JOS.attribute("value",
1401                IL->getValue().toString(
1402                    /*Radix=*/10, IL->getType()->isSignedIntegerType()));
1403}
1404void JSONNodeDumper::VisitCharacterLiteral(const CharacterLiteral *CL) {
1405  // FIXME: This should probably print the character literal as a string,
1406  // rather than as a numerical value. It would be nice if the behavior matched
1407  // what we do to print a string literal; right now, it is impossible to tell
1408  // the difference between 'a' and L'a' in C from the JSON output.
1409  JOS.attribute("value", CL->getValue());
1410}
1411void JSONNodeDumper::VisitFixedPointLiteral(const FixedPointLiteral *FPL) {
1412  JOS.attribute("value", FPL->getValueAsString(/*Radix=*/10));
1413}
1414void JSONNodeDumper::VisitFloatingLiteral(const FloatingLiteral *FL) {
1415  llvm::SmallVector<char, 16> Buffer;
1416  FL->getValue().toString(Buffer);
1417  JOS.attribute("value", Buffer);
1418}
1419void JSONNodeDumper::VisitStringLiteral(const StringLiteral *SL) {
1420  std::string Buffer;
1421  llvm::raw_string_ostream SS(Buffer);
1422  SL->outputString(SS);
1423  JOS.attribute("value", SS.str());
1424}
1425void JSONNodeDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *BLE) {
1426  JOS.attribute("value", BLE->getValue());
1427}
1428
1429void JSONNodeDumper::VisitIfStmt(const IfStmt *IS) {
1430  attributeOnlyIfTrue("hasInit", IS->hasInitStorage());
1431  attributeOnlyIfTrue("hasVar", IS->hasVarStorage());
1432  attributeOnlyIfTrue("hasElse", IS->hasElseStorage());
1433  attributeOnlyIfTrue("isConstexpr", IS->isConstexpr());
1434}
1435
1436void JSONNodeDumper::VisitSwitchStmt(const SwitchStmt *SS) {
1437  attributeOnlyIfTrue("hasInit", SS->hasInitStorage());
1438  attributeOnlyIfTrue("hasVar", SS->hasVarStorage());
1439}
1440void JSONNodeDumper::VisitCaseStmt(const CaseStmt *CS) {
1441  attributeOnlyIfTrue("isGNURange", CS->caseStmtIsGNURange());
1442}
1443
1444void JSONNodeDumper::VisitLabelStmt(const LabelStmt *LS) {
1445  JOS.attribute("name", LS->getName());
1446  JOS.attribute("declId", createPointerRepresentation(LS->getDecl()));
1447}
1448void JSONNodeDumper::VisitGotoStmt(const GotoStmt *GS) {
1449  JOS.attribute("targetLabelDeclId",
1450                createPointerRepresentation(GS->getLabel()));
1451}
1452
1453void JSONNodeDumper::VisitWhileStmt(const WhileStmt *WS) {
1454  attributeOnlyIfTrue("hasVar", WS->hasVarStorage());
1455}
1456
1457void JSONNodeDumper::VisitObjCAtCatchStmt(const ObjCAtCatchStmt* OACS) {
1458  // FIXME: it would be nice for the ASTNodeTraverser would handle the catch
1459  // parameter the same way for C++ and ObjC rather. In this case, C++ gets a
1460  // null child node and ObjC gets no child node.
1461  attributeOnlyIfTrue("isCatchAll", OACS->getCatchParamDecl() == nullptr);
1462}
1463
1464void JSONNodeDumper::VisitNullTemplateArgument(const TemplateArgument &TA) {
1465  JOS.attribute("isNull", true);
1466}
1467void JSONNodeDumper::VisitTypeTemplateArgument(const TemplateArgument &TA) {
1468  JOS.attribute("type", createQualType(TA.getAsType()));
1469}
1470void JSONNodeDumper::VisitDeclarationTemplateArgument(
1471    const TemplateArgument &TA) {
1472  JOS.attribute("decl", createBareDeclRef(TA.getAsDecl()));
1473}
1474void JSONNodeDumper::VisitNullPtrTemplateArgument(const TemplateArgument &TA) {
1475  JOS.attribute("isNullptr", true);
1476}
1477void JSONNodeDumper::VisitIntegralTemplateArgument(const TemplateArgument &TA) {
1478  JOS.attribute("value", TA.getAsIntegral().getSExtValue());
1479}
1480void JSONNodeDumper::VisitTemplateTemplateArgument(const TemplateArgument &TA) {
1481  // FIXME: cannot just call dump() on the argument, as that doesn't specify
1482  // the output format.
1483}
1484void JSONNodeDumper::VisitTemplateExpansionTemplateArgument(
1485    const TemplateArgument &TA) {
1486  // FIXME: cannot just call dump() on the argument, as that doesn't specify
1487  // the output format.
1488}
1489void JSONNodeDumper::VisitExpressionTemplateArgument(
1490    const TemplateArgument &TA) {
1491  JOS.attribute("isExpr", true);
1492}
1493void JSONNodeDumper::VisitPackTemplateArgument(const TemplateArgument &TA) {
1494  JOS.attribute("isPack", true);
1495}
1496
1497StringRef JSONNodeDumper::getCommentCommandName(unsigned CommandID) const {
1498  if (Traits)
1499    return Traits->getCommandInfo(CommandID)->Name;
1500  if (const comments::CommandInfo *Info =
1501          comments::CommandTraits::getBuiltinCommandInfo(CommandID))
1502    return Info->Name;
1503  return "<invalid>";
1504}
1505
1506void JSONNodeDumper::visitTextComment(const comments::TextComment *C,
1507                                      const comments::FullComment *) {
1508  JOS.attribute("text", C->getText());
1509}
1510
1511void JSONNodeDumper::visitInlineCommandComment(
1512    const comments::InlineCommandComment *C, const comments::FullComment *) {
1513  JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1514
1515  switch (C->getRenderKind()) {
1516  case comments::InlineCommandComment::RenderNormal:
1517    JOS.attribute("renderKind", "normal");
1518    break;
1519  case comments::InlineCommandComment::RenderBold:
1520    JOS.attribute("renderKind", "bold");
1521    break;
1522  case comments::InlineCommandComment::RenderEmphasized:
1523    JOS.attribute("renderKind", "emphasized");
1524    break;
1525  case comments::InlineCommandComment::RenderMonospaced:
1526    JOS.attribute("renderKind", "monospaced");
1527    break;
1528  case comments::InlineCommandComment::RenderAnchor:
1529    JOS.attribute("renderKind", "anchor");
1530    break;
1531  }
1532
1533  llvm::json::Array Args;
1534  for (unsigned I = 0, E = C->getNumArgs(); I < E; ++I)
1535    Args.push_back(C->getArgText(I));
1536
1537  if (!Args.empty())
1538    JOS.attribute("args", std::move(Args));
1539}
1540
1541void JSONNodeDumper::visitHTMLStartTagComment(
1542    const comments::HTMLStartTagComment *C, const comments::FullComment *) {
1543  JOS.attribute("name", C->getTagName());
1544  attributeOnlyIfTrue("selfClosing", C->isSelfClosing());
1545  attributeOnlyIfTrue("malformed", C->isMalformed());
1546
1547  llvm::json::Array Attrs;
1548  for (unsigned I = 0, E = C->getNumAttrs(); I < E; ++I)
1549    Attrs.push_back(
1550        {{"name", C->getAttr(I).Name}, {"value", C->getAttr(I).Value}});
1551
1552  if (!Attrs.empty())
1553    JOS.attribute("attrs", std::move(Attrs));
1554}
1555
1556void JSONNodeDumper::visitHTMLEndTagComment(
1557    const comments::HTMLEndTagComment *C, const comments::FullComment *) {
1558  JOS.attribute("name", C->getTagName());
1559}
1560
1561void JSONNodeDumper::visitBlockCommandComment(
1562    const comments::BlockCommandComment *C, const comments::FullComment *) {
1563  JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1564
1565  llvm::json::Array Args;
1566  for (unsigned I = 0, E = C->getNumArgs(); I < E; ++I)
1567    Args.push_back(C->getArgText(I));
1568
1569  if (!Args.empty())
1570    JOS.attribute("args", std::move(Args));
1571}
1572
1573void JSONNodeDumper::visitParamCommandComment(
1574    const comments::ParamCommandComment *C, const comments::FullComment *FC) {
1575  switch (C->getDirection()) {
1576  case comments::ParamCommandComment::In:
1577    JOS.attribute("direction", "in");
1578    break;
1579  case comments::ParamCommandComment::Out:
1580    JOS.attribute("direction", "out");
1581    break;
1582  case comments::ParamCommandComment::InOut:
1583    JOS.attribute("direction", "in,out");
1584    break;
1585  }
1586  attributeOnlyIfTrue("explicit", C->isDirectionExplicit());
1587
1588  if (C->hasParamName())
1589    JOS.attribute("param", C->isParamIndexValid() ? C->getParamName(FC)
1590                                                  : C->getParamNameAsWritten());
1591
1592  if (C->isParamIndexValid() && !C->isVarArgParam())
1593    JOS.attribute("paramIdx", C->getParamIndex());
1594}
1595
1596void JSONNodeDumper::visitTParamCommandComment(
1597    const comments::TParamCommandComment *C, const comments::FullComment *FC) {
1598  if (C->hasParamName())
1599    JOS.attribute("param", C->isPositionValid() ? C->getParamName(FC)
1600                                                : C->getParamNameAsWritten());
1601  if (C->isPositionValid()) {
1602    llvm::json::Array Positions;
1603    for (unsigned I = 0, E = C->getDepth(); I < E; ++I)
1604      Positions.push_back(C->getIndex(I));
1605
1606    if (!Positions.empty())
1607      JOS.attribute("positions", std::move(Positions));
1608  }
1609}
1610
1611void JSONNodeDumper::visitVerbatimBlockComment(
1612    const comments::VerbatimBlockComment *C, const comments::FullComment *) {
1613  JOS.attribute("name", getCommentCommandName(C->getCommandID()));
1614  JOS.attribute("closeName", C->getCloseName());
1615}
1616
1617void JSONNodeDumper::visitVerbatimBlockLineComment(
1618    const comments::VerbatimBlockLineComment *C,
1619    const comments::FullComment *) {
1620  JOS.attribute("text", C->getText());
1621}
1622
1623void JSONNodeDumper::visitVerbatimLineComment(
1624    const comments::VerbatimLineComment *C, const comments::FullComment *) {
1625  JOS.attribute("text", C->getText());
1626}
1627