xref: /netbsd-src/external/apache2/llvm/dist/clang/lib/AST/JSONNodeDumper.cpp (revision e038c9c4676b0f19b1b7dd08a940c6ed64a6d5ae) 
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 
7 using namespace clang;
8 
addPreviousDeclaration(const Decl * D)9 void 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 
Visit(const Attr * A)22 void 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 
Visit(const Stmt * S)47 void 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 
Visit(const Type * T)69 void 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 
Visit(QualType T)88 void 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 
Visit(const Decl * D)95 void 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 
Visit(const comments::Comment * C,const comments::FullComment * FC)130 void 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 
Visit(const TemplateArgument & TA,SourceRange R,const Decl * From,StringRef Label)145 void 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 
Visit(const CXXCtorInitializer * Init)157 void 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 
Visit(const OMPClause * C)171 void JSONNodeDumper::Visit(const OMPClause *C) {}
172 
Visit(const BlockDecl::Capture & C)173 void 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 
Visit(const GenericSelectionExpr::ConstAssociation & A)181 void JSONNodeDumper::Visit(const GenericSelectionExpr::ConstAssociation &A) {
182   JOS.attribute("associationKind", A.getTypeSourceInfo() ? "case" : "default");
183   attributeOnlyIfTrue("selected", A.isSelected());
184 }
185 
Visit(const APValue & Value,QualType Ty)186 void 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 
writeIncludeStack(PresumedLoc Loc,bool JustFirst)193 void 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 
writeBareSourceLocation(SourceLocation Loc,bool IsSpelling)210 void 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 
writeSourceLocation(SourceLocation Loc)249 void 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 
writeSourceRange(SourceRange R)270 void 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 
createPointerRepresentation(const void * Ptr)276 std::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 
createQualType(QualType QT,bool Desugar)283 llvm::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 
writeBareDeclRef(const Decl * D)297 void 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 
createBareDeclRef(const Decl * D)309 llvm::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 
createCastPath(const CastExpr * C)322 llvm::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 
343 static llvm::json::Object
createDefaultConstructorDefinitionData(const CXXRecordDecl * RD)344 createDefaultConstructorDefinitionData(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 
358 static llvm::json::Object
createCopyConstructorDefinitionData(const CXXRecordDecl * RD)359 createCopyConstructorDefinitionData(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 
376 static llvm::json::Object
createMoveConstructorDefinitionData(const CXXRecordDecl * RD)377 createMoveConstructorDefinitionData(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 
393 static llvm::json::Object
createCopyAssignmentDefinitionData(const CXXRecordDecl * RD)394 createCopyAssignmentDefinitionData(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 
409 static llvm::json::Object
createMoveAssignmentDefinitionData(const CXXRecordDecl * RD)410 createMoveAssignmentDefinitionData(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 
424 static llvm::json::Object
createDestructorDefinitionData(const CXXRecordDecl * RD)425 createDestructorDefinitionData(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 
441 llvm::json::Object
createCXXRecordDefinitionData(const CXXRecordDecl * RD)442 JSONNodeDumper::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 
createAccessSpecifier(AccessSpecifier AS)477 std::string JSONNodeDumper::createAccessSpecifier(AccessSpecifier AS) {
478   const auto AccessSpelling = getAccessSpelling(AS);
479   if (AccessSpelling.empty())
480     return "none";
481   return AccessSpelling.str();
482 }
483 
484 llvm::json::Object
createCXXBaseSpecifier(const CXXBaseSpecifier & BS)485 JSONNodeDumper::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 
VisitTypedefType(const TypedefType * TT)500 void JSONNodeDumper::VisitTypedefType(const TypedefType *TT) {
501   JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
502 }
503 
VisitFunctionType(const FunctionType * T)504 void 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 
VisitFunctionProtoType(const FunctionProtoType * T)513 void 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 
VisitRValueReferenceType(const ReferenceType * RT)565 void JSONNodeDumper::VisitRValueReferenceType(const ReferenceType *RT) {
566   attributeOnlyIfTrue("spelledAsLValue", RT->isSpelledAsLValue());
567 }
568 
VisitArrayType(const ArrayType * AT)569 void 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 
VisitConstantArrayType(const ConstantArrayType * CAT)586 void 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 
VisitDependentSizedExtVectorType(const DependentSizedExtVectorType * VT)593 void JSONNodeDumper::VisitDependentSizedExtVectorType(
594     const DependentSizedExtVectorType *VT) {
595   JOS.attributeObject(
596       "attrLoc", [VT, this] { writeSourceLocation(VT->getAttributeLoc()); });
597 }
598 
VisitVectorType(const VectorType * VT)599 void 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 
VisitUnresolvedUsingType(const UnresolvedUsingType * UUT)628 void JSONNodeDumper::VisitUnresolvedUsingType(const UnresolvedUsingType *UUT) {
629   JOS.attribute("decl", createBareDeclRef(UUT->getDecl()));
630 }
631 
VisitUnaryTransformType(const UnaryTransformType * UTT)632 void JSONNodeDumper::VisitUnaryTransformType(const UnaryTransformType *UTT) {
633   switch (UTT->getUTTKind()) {
634   case UnaryTransformType::EnumUnderlyingType:
635     JOS.attribute("transformKind", "underlying_type");
636     break;
637   }
638 }
639 
VisitTagType(const TagType * TT)640 void JSONNodeDumper::VisitTagType(const TagType *TT) {
641   JOS.attribute("decl", createBareDeclRef(TT->getDecl()));
642 }
643 
VisitTemplateTypeParmType(const TemplateTypeParmType * TTPT)644 void 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 
VisitAutoType(const AutoType * AT)652 void 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 
VisitTemplateSpecializationType(const TemplateSpecializationType * TST)667 void 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 
VisitInjectedClassNameType(const InjectedClassNameType * ICNT)677 void JSONNodeDumper::VisitInjectedClassNameType(
678     const InjectedClassNameType *ICNT) {
679   JOS.attribute("decl", createBareDeclRef(ICNT->getDecl()));
680 }
681 
VisitObjCInterfaceType(const ObjCInterfaceType * OIT)682 void JSONNodeDumper::VisitObjCInterfaceType(const ObjCInterfaceType *OIT) {
683   JOS.attribute("decl", createBareDeclRef(OIT->getDecl()));
684 }
685 
VisitPackExpansionType(const PackExpansionType * PET)686 void JSONNodeDumper::VisitPackExpansionType(const PackExpansionType *PET) {
687   if (llvm::Optional<unsigned> N = PET->getNumExpansions())
688     JOS.attribute("numExpansions", *N);
689 }
690 
VisitElaboratedType(const ElaboratedType * ET)691 void 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 
VisitMacroQualifiedType(const MacroQualifiedType * MQT)702 void JSONNodeDumper::VisitMacroQualifiedType(const MacroQualifiedType *MQT) {
703   JOS.attribute("macroName", MQT->getMacroIdentifier()->getName());
704 }
705 
VisitMemberPointerType(const MemberPointerType * MPT)706 void JSONNodeDumper::VisitMemberPointerType(const MemberPointerType *MPT) {
707   attributeOnlyIfTrue("isData", MPT->isMemberDataPointer());
708   attributeOnlyIfTrue("isFunction", MPT->isMemberFunctionPointer());
709 }
710 
VisitNamedDecl(const NamedDecl * ND)711 void 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 
VisitTypedefDecl(const TypedefDecl * TD)720 void JSONNodeDumper::VisitTypedefDecl(const TypedefDecl *TD) {
721   VisitNamedDecl(TD);
722   JOS.attribute("type", createQualType(TD->getUnderlyingType()));
723 }
724 
VisitTypeAliasDecl(const TypeAliasDecl * TAD)725 void JSONNodeDumper::VisitTypeAliasDecl(const TypeAliasDecl *TAD) {
726   VisitNamedDecl(TAD);
727   JOS.attribute("type", createQualType(TAD->getUnderlyingType()));
728 }
729 
VisitNamespaceDecl(const NamespaceDecl * ND)730 void 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 
VisitUsingDirectiveDecl(const UsingDirectiveDecl * UDD)738 void JSONNodeDumper::VisitUsingDirectiveDecl(const UsingDirectiveDecl *UDD) {
739   JOS.attribute("nominatedNamespace",
740                 createBareDeclRef(UDD->getNominatedNamespace()));
741 }
742 
VisitNamespaceAliasDecl(const NamespaceAliasDecl * NAD)743 void JSONNodeDumper::VisitNamespaceAliasDecl(const NamespaceAliasDecl *NAD) {
744   VisitNamedDecl(NAD);
745   JOS.attribute("aliasedNamespace",
746                 createBareDeclRef(NAD->getAliasedNamespace()));
747 }
748 
VisitUsingDecl(const UsingDecl * UD)749 void 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 
VisitUsingShadowDecl(const UsingShadowDecl * USD)759 void JSONNodeDumper::VisitUsingShadowDecl(const UsingShadowDecl *USD) {
760   JOS.attribute("target", createBareDeclRef(USD->getTargetDecl()));
761 }
762 
VisitVarDecl(const VarDecl * VD)763 void 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 
VisitFieldDecl(const FieldDecl * FD)789 void 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 
VisitFunctionDecl(const FunctionDecl * FD)798 void 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 
VisitEnumDecl(const EnumDecl * ED)816 void 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 }
VisitEnumConstantDecl(const EnumConstantDecl * ECD)824 void JSONNodeDumper::VisitEnumConstantDecl(const EnumConstantDecl *ECD) {
825   VisitNamedDecl(ECD);
826   JOS.attribute("type", createQualType(ECD->getType()));
827 }
828 
VisitRecordDecl(const RecordDecl * RD)829 void JSONNodeDumper::VisitRecordDecl(const RecordDecl *RD) {
830   VisitNamedDecl(RD);
831   JOS.attribute("tagUsed", RD->getKindName());
832   attributeOnlyIfTrue("completeDefinition", RD->isCompleteDefinition());
833 }
VisitCXXRecordDecl(const CXXRecordDecl * RD)834 void 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 
VisitTemplateTypeParmDecl(const TemplateTypeParmDecl * D)850 void 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 
VisitNonTypeTemplateParmDecl(const NonTypeTemplateParmDecl * D)865 void 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 
VisitTemplateTemplateParmDecl(const TemplateTemplateParmDecl * D)881 void 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 
VisitLinkageSpecDecl(const LinkageSpecDecl * LSD)898 void 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 
VisitAccessSpecDecl(const AccessSpecDecl * ASD)908 void JSONNodeDumper::VisitAccessSpecDecl(const AccessSpecDecl *ASD) {
909   JOS.attribute("access", createAccessSpecifier(ASD->getAccess()));
910 }
911 
VisitFriendDecl(const FriendDecl * FD)912 void JSONNodeDumper::VisitFriendDecl(const FriendDecl *FD) {
913   if (const TypeSourceInfo *T = FD->getFriendType())
914     JOS.attribute("type", createQualType(T->getType()));
915 }
916 
VisitObjCIvarDecl(const ObjCIvarDecl * D)917 void 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 
VisitObjCMethodDecl(const ObjCMethodDecl * D)930 void 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 
VisitObjCTypeParamDecl(const ObjCTypeParamDecl * D)937 void 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 
VisitObjCCategoryDecl(const ObjCCategoryDecl * D)953 void 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 
VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl * D)965 void JSONNodeDumper::VisitObjCCategoryImplDecl(const ObjCCategoryImplDecl *D) {
966   VisitNamedDecl(D);
967   JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
968   JOS.attribute("categoryDecl", createBareDeclRef(D->getCategoryDecl()));
969 }
970 
VisitObjCProtocolDecl(const ObjCProtocolDecl * D)971 void 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 
VisitObjCInterfaceDecl(const ObjCInterfaceDecl * D)981 void 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 
VisitObjCImplementationDecl(const ObjCImplementationDecl * D)993 void 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 
VisitObjCCompatibleAliasDecl(const ObjCCompatibleAliasDecl * D)1000 void JSONNodeDumper::VisitObjCCompatibleAliasDecl(
1001     const ObjCCompatibleAliasDecl *D) {
1002   VisitNamedDecl(D);
1003   JOS.attribute("interface", createBareDeclRef(D->getClassInterface()));
1004 }
1005 
VisitObjCPropertyDecl(const ObjCPropertyDecl * D)1006 void 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 
VisitObjCPropertyImplDecl(const ObjCPropertyImplDecl * D)1045 void 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 
VisitBlockDecl(const BlockDecl * D)1055 void JSONNodeDumper::VisitBlockDecl(const BlockDecl *D) {
1056   attributeOnlyIfTrue("variadic", D->isVariadic());
1057   attributeOnlyIfTrue("capturesThis", D->capturesCXXThis());
1058 }
1059 
VisitObjCEncodeExpr(const ObjCEncodeExpr * OEE)1060 void JSONNodeDumper::VisitObjCEncodeExpr(const ObjCEncodeExpr *OEE) {
1061   JOS.attribute("encodedType", createQualType(OEE->getEncodedType()));
1062 }
1063 
VisitObjCMessageExpr(const ObjCMessageExpr * OME)1064 void 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 
VisitObjCBoxedExpr(const ObjCBoxedExpr * OBE)1094 void 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 
VisitObjCSelectorExpr(const ObjCSelectorExpr * OSE)1104 void 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 
VisitObjCProtocolExpr(const ObjCProtocolExpr * OPE)1112 void JSONNodeDumper::VisitObjCProtocolExpr(const ObjCProtocolExpr *OPE) {
1113   JOS.attribute("protocol", createBareDeclRef(OPE->getProtocol()));
1114 }
1115 
VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr * OPRE)1116 void 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 
VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr * OSRE)1133 void 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 
VisitObjCIvarRefExpr(const ObjCIvarRefExpr * OIRE)1144 void 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 
VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr * OBLE)1150 void JSONNodeDumper::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *OBLE) {
1151   JOS.attribute("value", OBLE->getValue() ? "__objc_yes" : "__objc_no");
1152 }
1153 
VisitDeclRefExpr(const DeclRefExpr * DRE)1154 void 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 
VisitPredefinedExpr(const PredefinedExpr * PE)1167 void JSONNodeDumper::VisitPredefinedExpr(const PredefinedExpr *PE) {
1168   JOS.attribute("name", PredefinedExpr::getIdentKindName(PE->getIdentKind()));
1169 }
1170 
VisitUnaryOperator(const UnaryOperator * UO)1171 void 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 
VisitBinaryOperator(const BinaryOperator * BO)1178 void JSONNodeDumper::VisitBinaryOperator(const BinaryOperator *BO) {
1179   JOS.attribute("opcode", BinaryOperator::getOpcodeStr(BO->getOpcode()));
1180 }
1181 
VisitCompoundAssignOperator(const CompoundAssignOperator * CAO)1182 void 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 
VisitMemberExpr(const MemberExpr * ME)1190 void 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 
VisitCXXNewExpr(const CXXNewExpr * NE)1205 void 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 }
VisitCXXDeleteExpr(const CXXDeleteExpr * DE)1219 void 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 
VisitCXXThisExpr(const CXXThisExpr * TE)1227 void JSONNodeDumper::VisitCXXThisExpr(const CXXThisExpr *TE) {
1228   attributeOnlyIfTrue("implicit", TE->isImplicit());
1229 }
1230 
VisitCastExpr(const CastExpr * CE)1231 void 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 
VisitImplicitCastExpr(const ImplicitCastExpr * ICE)1242 void JSONNodeDumper::VisitImplicitCastExpr(const ImplicitCastExpr *ICE) {
1243   VisitCastExpr(ICE);
1244   attributeOnlyIfTrue("isPartOfExplicitCast", ICE->isPartOfExplicitCast());
1245 }
1246 
VisitCallExpr(const CallExpr * CE)1247 void JSONNodeDumper::VisitCallExpr(const CallExpr *CE) {
1248   attributeOnlyIfTrue("adl", CE->usesADL());
1249 }
1250 
VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr * TTE)1251 void 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 
VisitSizeOfPackExpr(const SizeOfPackExpr * SOPE)1258 void JSONNodeDumper::VisitSizeOfPackExpr(const SizeOfPackExpr *SOPE) {
1259   VisitNamedDecl(SOPE->getPack());
1260 }
1261 
VisitUnresolvedLookupExpr(const UnresolvedLookupExpr * ULE)1262 void 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 
VisitAddrLabelExpr(const AddrLabelExpr * ALE)1273 void JSONNodeDumper::VisitAddrLabelExpr(const AddrLabelExpr *ALE) {
1274   JOS.attribute("name", ALE->getLabel()->getName());
1275   JOS.attribute("labelDeclId", createPointerRepresentation(ALE->getLabel()));
1276 }
1277 
VisitCXXTypeidExpr(const CXXTypeidExpr * CTE)1278 void 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 
VisitConstantExpr(const ConstantExpr * CE)1288 void JSONNodeDumper::VisitConstantExpr(const ConstantExpr *CE) {
1289   if (CE->getResultAPValueKind() != APValue::None)
1290     Visit(CE->getAPValueResult(), CE->getType());
1291 }
1292 
VisitInitListExpr(const InitListExpr * ILE)1293 void JSONNodeDumper::VisitInitListExpr(const InitListExpr *ILE) {
1294   if (const FieldDecl *FD = ILE->getInitializedFieldInUnion())
1295     JOS.attribute("field", createBareDeclRef(FD));
1296 }
1297 
VisitGenericSelectionExpr(const GenericSelectionExpr * GSE)1298 void JSONNodeDumper::VisitGenericSelectionExpr(
1299     const GenericSelectionExpr *GSE) {
1300   attributeOnlyIfTrue("resultDependent", GSE->isResultDependent());
1301 }
1302 
VisitCXXUnresolvedConstructExpr(const CXXUnresolvedConstructExpr * UCE)1303 void 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 
VisitCXXConstructExpr(const CXXConstructExpr * CE)1310 void 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 
VisitExprWithCleanups(const ExprWithCleanups * EWC)1335 void 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 
VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr * BTE)1355 void 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 
VisitMaterializeTemporaryExpr(const MaterializeTemporaryExpr * MTE)1363 void 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 
VisitCXXDependentScopeMemberExpr(const CXXDependentScopeMemberExpr * DSME)1389 void 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 
VisitIntegerLiteral(const IntegerLiteral * IL)1406 void JSONNodeDumper::VisitIntegerLiteral(const IntegerLiteral *IL) {
1407   JOS.attribute("value",
1408                 IL->getValue().toString(
1409                     /*Radix=*/10, IL->getType()->isSignedIntegerType()));
1410 }
VisitCharacterLiteral(const CharacterLiteral * CL)1411 void 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 }
VisitFixedPointLiteral(const FixedPointLiteral * FPL)1418 void JSONNodeDumper::VisitFixedPointLiteral(const FixedPointLiteral *FPL) {
1419   JOS.attribute("value", FPL->getValueAsString(/*Radix=*/10));
1420 }
VisitFloatingLiteral(const FloatingLiteral * FL)1421 void JSONNodeDumper::VisitFloatingLiteral(const FloatingLiteral *FL) {
1422   llvm::SmallString<16> Buffer;
1423   FL->getValue().toString(Buffer);
1424   JOS.attribute("value", Buffer);
1425 }
VisitStringLiteral(const StringLiteral * SL)1426 void 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 }
VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr * BLE)1432 void JSONNodeDumper::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *BLE) {
1433   JOS.attribute("value", BLE->getValue());
1434 }
1435 
VisitIfStmt(const IfStmt * IS)1436 void 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 
VisitSwitchStmt(const SwitchStmt * SS)1443 void JSONNodeDumper::VisitSwitchStmt(const SwitchStmt *SS) {
1444   attributeOnlyIfTrue("hasInit", SS->hasInitStorage());
1445   attributeOnlyIfTrue("hasVar", SS->hasVarStorage());
1446 }
VisitCaseStmt(const CaseStmt * CS)1447 void JSONNodeDumper::VisitCaseStmt(const CaseStmt *CS) {
1448   attributeOnlyIfTrue("isGNURange", CS->caseStmtIsGNURange());
1449 }
1450 
VisitLabelStmt(const LabelStmt * LS)1451 void JSONNodeDumper::VisitLabelStmt(const LabelStmt *LS) {
1452   JOS.attribute("name", LS->getName());
1453   JOS.attribute("declId", createPointerRepresentation(LS->getDecl()));
1454   attributeOnlyIfTrue("sideEntry", LS->isSideEntry());
1455 }
VisitGotoStmt(const GotoStmt * GS)1456 void JSONNodeDumper::VisitGotoStmt(const GotoStmt *GS) {
1457   JOS.attribute("targetLabelDeclId",
1458                 createPointerRepresentation(GS->getLabel()));
1459 }
1460 
VisitWhileStmt(const WhileStmt * WS)1461 void JSONNodeDumper::VisitWhileStmt(const WhileStmt *WS) {
1462   attributeOnlyIfTrue("hasVar", WS->hasVarStorage());
1463 }
1464 
VisitObjCAtCatchStmt(const ObjCAtCatchStmt * OACS)1465 void 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 
VisitNullTemplateArgument(const TemplateArgument & TA)1472 void JSONNodeDumper::VisitNullTemplateArgument(const TemplateArgument &TA) {
1473   JOS.attribute("isNull", true);
1474 }
VisitTypeTemplateArgument(const TemplateArgument & TA)1475 void JSONNodeDumper::VisitTypeTemplateArgument(const TemplateArgument &TA) {
1476   JOS.attribute("type", createQualType(TA.getAsType()));
1477 }
VisitDeclarationTemplateArgument(const TemplateArgument & TA)1478 void JSONNodeDumper::VisitDeclarationTemplateArgument(
1479     const TemplateArgument &TA) {
1480   JOS.attribute("decl", createBareDeclRef(TA.getAsDecl()));
1481 }
VisitNullPtrTemplateArgument(const TemplateArgument & TA)1482 void JSONNodeDumper::VisitNullPtrTemplateArgument(const TemplateArgument &TA) {
1483   JOS.attribute("isNullptr", true);
1484 }
VisitIntegralTemplateArgument(const TemplateArgument & TA)1485 void JSONNodeDumper::VisitIntegralTemplateArgument(const TemplateArgument &TA) {
1486   JOS.attribute("value", TA.getAsIntegral().getSExtValue());
1487 }
VisitTemplateTemplateArgument(const TemplateArgument & TA)1488 void JSONNodeDumper::VisitTemplateTemplateArgument(const TemplateArgument &TA) {
1489   // FIXME: cannot just call dump() on the argument, as that doesn't specify
1490   // the output format.
1491 }
VisitTemplateExpansionTemplateArgument(const TemplateArgument & TA)1492 void 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 }
VisitExpressionTemplateArgument(const TemplateArgument & TA)1497 void JSONNodeDumper::VisitExpressionTemplateArgument(
1498     const TemplateArgument &TA) {
1499   JOS.attribute("isExpr", true);
1500 }
VisitPackTemplateArgument(const TemplateArgument & TA)1501 void JSONNodeDumper::VisitPackTemplateArgument(const TemplateArgument &TA) {
1502   JOS.attribute("isPack", true);
1503 }
1504 
getCommentCommandName(unsigned CommandID) const1505 StringRef 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 
visitTextComment(const comments::TextComment * C,const comments::FullComment *)1514 void JSONNodeDumper::visitTextComment(const comments::TextComment *C,
1515                                       const comments::FullComment *) {
1516   JOS.attribute("text", C->getText());
1517 }
1518 
visitInlineCommandComment(const comments::InlineCommandComment * C,const comments::FullComment *)1519 void 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 
visitHTMLStartTagComment(const comments::HTMLStartTagComment * C,const comments::FullComment *)1549 void 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 
visitHTMLEndTagComment(const comments::HTMLEndTagComment * C,const comments::FullComment *)1564 void JSONNodeDumper::visitHTMLEndTagComment(
1565     const comments::HTMLEndTagComment *C, const comments::FullComment *) {
1566   JOS.attribute("name", C->getTagName());
1567 }
1568 
visitBlockCommandComment(const comments::BlockCommandComment * C,const comments::FullComment *)1569 void 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 
visitParamCommandComment(const comments::ParamCommandComment * C,const comments::FullComment * FC)1581 void 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 
visitTParamCommandComment(const comments::TParamCommandComment * C,const comments::FullComment * FC)1604 void 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 
visitVerbatimBlockComment(const comments::VerbatimBlockComment * C,const comments::FullComment *)1619 void 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 
visitVerbatimBlockLineComment(const comments::VerbatimBlockLineComment * C,const comments::FullComment *)1625 void JSONNodeDumper::visitVerbatimBlockLineComment(
1626     const comments::VerbatimBlockLineComment *C,
1627     const comments::FullComment *) {
1628   JOS.attribute("text", C->getText());
1629 }
1630 
visitVerbatimLineComment(const comments::VerbatimLineComment * C,const comments::FullComment *)1631 void JSONNodeDumper::visitVerbatimLineComment(
1632     const comments::VerbatimLineComment *C, const comments::FullComment *) {
1633   JOS.attribute("text", C->getText());
1634 }
1635