xref: /llvm-project/clang/tools/libclang/CXCursor.cpp (revision 41c6e4379204ffc00948edd33d59ba5ebbceaba2) 
1 //===- CXCursor.cpp - Routines for manipulating CXCursors -----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file defines routines for manipulating CXCursors. It should be the
10 // only file that has internal knowledge of the encoding of the data in
11 // CXCursor.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "CXCursor.h"
16 #include "CXString.h"
17 #include "CXTranslationUnit.h"
18 #include "CXType.h"
19 #include "clang-c/Index.h"
20 #include "clang/AST/Attr.h"
21 #include "clang/AST/Decl.h"
22 #include "clang/AST/DeclCXX.h"
23 #include "clang/AST/DeclObjC.h"
24 #include "clang/AST/DeclTemplate.h"
25 #include "clang/AST/Expr.h"
26 #include "clang/AST/ExprCXX.h"
27 #include "clang/AST/ExprObjC.h"
28 #include "clang/Frontend/ASTUnit.h"
29 #include "llvm/Support/ErrorHandling.h"
30 
31 using namespace clang;
32 using namespace cxcursor;
33 
34 CXCursor cxcursor::MakeCXCursorInvalid(CXCursorKind K, CXTranslationUnit TU) {
35   assert(K >= CXCursor_FirstInvalid && K <= CXCursor_LastInvalid);
36   CXCursor C = {K, 0, {nullptr, nullptr, TU}};
37   return C;
38 }
39 
40 static CXCursorKind GetCursorKind(const Attr *A) {
41   assert(A && "Invalid arguments!");
42   switch (A->getKind()) {
43   default:
44     break;
45   case attr::IBAction:
46     return CXCursor_IBActionAttr;
47   case attr::IBOutlet:
48     return CXCursor_IBOutletAttr;
49   case attr::IBOutletCollection:
50     return CXCursor_IBOutletCollectionAttr;
51   case attr::Final:
52     return CXCursor_CXXFinalAttr;
53   case attr::Override:
54     return CXCursor_CXXOverrideAttr;
55   case attr::Annotate:
56     return CXCursor_AnnotateAttr;
57   case attr::AsmLabel:
58     return CXCursor_AsmLabelAttr;
59   case attr::Packed:
60     return CXCursor_PackedAttr;
61   case attr::Pure:
62     return CXCursor_PureAttr;
63   case attr::Const:
64     return CXCursor_ConstAttr;
65   case attr::NoDuplicate:
66     return CXCursor_NoDuplicateAttr;
67   case attr::CUDAConstant:
68     return CXCursor_CUDAConstantAttr;
69   case attr::CUDADevice:
70     return CXCursor_CUDADeviceAttr;
71   case attr::CUDAGlobal:
72     return CXCursor_CUDAGlobalAttr;
73   case attr::CUDAHost:
74     return CXCursor_CUDAHostAttr;
75   case attr::CUDAShared:
76     return CXCursor_CUDASharedAttr;
77   case attr::Visibility:
78     return CXCursor_VisibilityAttr;
79   case attr::DLLExport:
80     return CXCursor_DLLExport;
81   case attr::DLLImport:
82     return CXCursor_DLLImport;
83   case attr::NSReturnsRetained:
84     return CXCursor_NSReturnsRetained;
85   case attr::NSReturnsNotRetained:
86     return CXCursor_NSReturnsNotRetained;
87   case attr::NSReturnsAutoreleased:
88     return CXCursor_NSReturnsAutoreleased;
89   case attr::NSConsumesSelf:
90     return CXCursor_NSConsumesSelf;
91   case attr::NSConsumed:
92     return CXCursor_NSConsumed;
93   case attr::ObjCException:
94     return CXCursor_ObjCException;
95   case attr::ObjCNSObject:
96     return CXCursor_ObjCNSObject;
97   case attr::ObjCIndependentClass:
98     return CXCursor_ObjCIndependentClass;
99   case attr::ObjCPreciseLifetime:
100     return CXCursor_ObjCPreciseLifetime;
101   case attr::ObjCReturnsInnerPointer:
102     return CXCursor_ObjCReturnsInnerPointer;
103   case attr::ObjCRequiresSuper:
104     return CXCursor_ObjCRequiresSuper;
105   case attr::ObjCRootClass:
106     return CXCursor_ObjCRootClass;
107   case attr::ObjCSubclassingRestricted:
108     return CXCursor_ObjCSubclassingRestricted;
109   case attr::ObjCExplicitProtocolImpl:
110     return CXCursor_ObjCExplicitProtocolImpl;
111   case attr::ObjCDesignatedInitializer:
112     return CXCursor_ObjCDesignatedInitializer;
113   case attr::ObjCRuntimeVisible:
114     return CXCursor_ObjCRuntimeVisible;
115   case attr::ObjCBoxable:
116     return CXCursor_ObjCBoxable;
117   case attr::FlagEnum:
118     return CXCursor_FlagEnum;
119   case attr::Convergent:
120     return CXCursor_ConvergentAttr;
121   case attr::WarnUnused:
122     return CXCursor_WarnUnusedAttr;
123   case attr::WarnUnusedResult:
124     return CXCursor_WarnUnusedResultAttr;
125   case attr::Aligned:
126     return CXCursor_AlignedAttr;
127   }
128 
129   return CXCursor_UnexposedAttr;
130 }
131 
132 CXCursor cxcursor::MakeCXCursor(const Attr *A, const Decl *Parent,
133                                 CXTranslationUnit TU) {
134   assert(A && Parent && TU && "Invalid arguments!");
135   CXCursor C = {GetCursorKind(A), 0, {Parent, A, TU}};
136   return C;
137 }
138 
139 CXCursor cxcursor::MakeCXCursor(const Decl *D, CXTranslationUnit TU,
140                                 SourceRange RegionOfInterest,
141                                 bool FirstInDeclGroup) {
142   assert(D && TU && "Invalid arguments!");
143 
144   CXCursorKind K = getCursorKindForDecl(D);
145 
146   if (K == CXCursor_ObjCClassMethodDecl ||
147       K == CXCursor_ObjCInstanceMethodDecl) {
148     int SelectorIdIndex = -1;
149     // Check if cursor points to a selector id.
150     if (RegionOfInterest.isValid() &&
151         RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
152       SmallVector<SourceLocation, 16> SelLocs;
153       cast<ObjCMethodDecl>(D)->getSelectorLocs(SelLocs);
154       SmallVectorImpl<SourceLocation>::iterator I =
155           llvm::find(SelLocs, RegionOfInterest.getBegin());
156       if (I != SelLocs.end())
157         SelectorIdIndex = I - SelLocs.begin();
158     }
159     CXCursor C = {K,
160                   SelectorIdIndex,
161                   {D, (void *)(intptr_t)(FirstInDeclGroup ? 1 : 0), TU}};
162     return C;
163   }
164 
165   CXCursor C = {K, 0, {D, (void *)(intptr_t)(FirstInDeclGroup ? 1 : 0), TU}};
166   return C;
167 }
168 
169 CXCursor cxcursor::MakeCXCursor(const Stmt *S, const Decl *Parent,
170                                 CXTranslationUnit TU,
171                                 SourceRange RegionOfInterest) {
172   assert(S && TU && "Invalid arguments!");
173   CXCursorKind K = CXCursor_NotImplemented;
174 
175   switch (S->getStmtClass()) {
176   case Stmt::NoStmtClass:
177     break;
178 
179   case Stmt::CaseStmtClass:
180     K = CXCursor_CaseStmt;
181     break;
182 
183   case Stmt::DefaultStmtClass:
184     K = CXCursor_DefaultStmt;
185     break;
186 
187   case Stmt::IfStmtClass:
188     K = CXCursor_IfStmt;
189     break;
190 
191   case Stmt::SwitchStmtClass:
192     K = CXCursor_SwitchStmt;
193     break;
194 
195   case Stmt::WhileStmtClass:
196     K = CXCursor_WhileStmt;
197     break;
198 
199   case Stmt::DoStmtClass:
200     K = CXCursor_DoStmt;
201     break;
202 
203   case Stmt::ForStmtClass:
204     K = CXCursor_ForStmt;
205     break;
206 
207   case Stmt::GotoStmtClass:
208     K = CXCursor_GotoStmt;
209     break;
210 
211   case Stmt::IndirectGotoStmtClass:
212     K = CXCursor_IndirectGotoStmt;
213     break;
214 
215   case Stmt::ContinueStmtClass:
216     K = CXCursor_ContinueStmt;
217     break;
218 
219   case Stmt::BreakStmtClass:
220     K = CXCursor_BreakStmt;
221     break;
222 
223   case Stmt::ReturnStmtClass:
224     K = CXCursor_ReturnStmt;
225     break;
226 
227   case Stmt::GCCAsmStmtClass:
228     K = CXCursor_GCCAsmStmt;
229     break;
230 
231   case Stmt::MSAsmStmtClass:
232     K = CXCursor_MSAsmStmt;
233     break;
234 
235   case Stmt::ObjCAtTryStmtClass:
236     K = CXCursor_ObjCAtTryStmt;
237     break;
238 
239   case Stmt::ObjCAtCatchStmtClass:
240     K = CXCursor_ObjCAtCatchStmt;
241     break;
242 
243   case Stmt::ObjCAtFinallyStmtClass:
244     K = CXCursor_ObjCAtFinallyStmt;
245     break;
246 
247   case Stmt::ObjCAtThrowStmtClass:
248     K = CXCursor_ObjCAtThrowStmt;
249     break;
250 
251   case Stmt::ObjCAtSynchronizedStmtClass:
252     K = CXCursor_ObjCAtSynchronizedStmt;
253     break;
254 
255   case Stmt::ObjCAutoreleasePoolStmtClass:
256     K = CXCursor_ObjCAutoreleasePoolStmt;
257     break;
258 
259   case Stmt::ObjCForCollectionStmtClass:
260     K = CXCursor_ObjCForCollectionStmt;
261     break;
262 
263   case Stmt::CXXCatchStmtClass:
264     K = CXCursor_CXXCatchStmt;
265     break;
266 
267   case Stmt::CXXTryStmtClass:
268     K = CXCursor_CXXTryStmt;
269     break;
270 
271   case Stmt::CXXForRangeStmtClass:
272     K = CXCursor_CXXForRangeStmt;
273     break;
274 
275   case Stmt::SEHTryStmtClass:
276     K = CXCursor_SEHTryStmt;
277     break;
278 
279   case Stmt::SEHExceptStmtClass:
280     K = CXCursor_SEHExceptStmt;
281     break;
282 
283   case Stmt::SEHFinallyStmtClass:
284     K = CXCursor_SEHFinallyStmt;
285     break;
286 
287   case Stmt::SEHLeaveStmtClass:
288     K = CXCursor_SEHLeaveStmt;
289     break;
290 
291   case Stmt::CoroutineBodyStmtClass:
292   case Stmt::CoreturnStmtClass:
293     K = CXCursor_UnexposedStmt;
294     break;
295 
296   case Stmt::ArrayTypeTraitExprClass:
297   case Stmt::AsTypeExprClass:
298   case Stmt::AtomicExprClass:
299   case Stmt::BinaryConditionalOperatorClass:
300   case Stmt::TypeTraitExprClass:
301   case Stmt::CoawaitExprClass:
302   case Stmt::DependentCoawaitExprClass:
303   case Stmt::CoyieldExprClass:
304   case Stmt::CXXBindTemporaryExprClass:
305   case Stmt::CXXDefaultArgExprClass:
306   case Stmt::CXXDefaultInitExprClass:
307   case Stmt::CXXFoldExprClass:
308   case Stmt::CXXRewrittenBinaryOperatorClass:
309   case Stmt::CXXStdInitializerListExprClass:
310   case Stmt::CXXScalarValueInitExprClass:
311   case Stmt::CXXUuidofExprClass:
312   case Stmt::ChooseExprClass:
313   case Stmt::DesignatedInitExprClass:
314   case Stmt::DesignatedInitUpdateExprClass:
315   case Stmt::ArrayInitLoopExprClass:
316   case Stmt::ArrayInitIndexExprClass:
317   case Stmt::ExprWithCleanupsClass:
318   case Stmt::ExpressionTraitExprClass:
319   case Stmt::ExtVectorElementExprClass:
320   case Stmt::ImplicitCastExprClass:
321   case Stmt::ImplicitValueInitExprClass:
322   case Stmt::NoInitExprClass:
323   case Stmt::MaterializeTemporaryExprClass:
324   case Stmt::ObjCIndirectCopyRestoreExprClass:
325   case Stmt::OffsetOfExprClass:
326   case Stmt::ParenListExprClass:
327   case Stmt::PredefinedExprClass:
328   case Stmt::ShuffleVectorExprClass:
329   case Stmt::SourceLocExprClass:
330   case Stmt::ConvertVectorExprClass:
331   case Stmt::VAArgExprClass:
332   case Stmt::ObjCArrayLiteralClass:
333   case Stmt::ObjCDictionaryLiteralClass:
334   case Stmt::ObjCBoxedExprClass:
335   case Stmt::ObjCSubscriptRefExprClass:
336   case Stmt::RecoveryExprClass:
337   case Stmt::SYCLUniqueStableNameExprClass:
338   case Stmt::EmbedExprClass:
339     K = CXCursor_UnexposedExpr;
340     break;
341 
342   case Stmt::OpaqueValueExprClass:
343     if (Expr *Src = cast<OpaqueValueExpr>(S)->getSourceExpr())
344       return MakeCXCursor(Src, Parent, TU, RegionOfInterest);
345     K = CXCursor_UnexposedExpr;
346     break;
347 
348   case Stmt::PseudoObjectExprClass:
349     return MakeCXCursor(cast<PseudoObjectExpr>(S)->getSyntacticForm(), Parent,
350                         TU, RegionOfInterest);
351 
352   case Stmt::CompoundStmtClass:
353     K = CXCursor_CompoundStmt;
354     break;
355 
356   case Stmt::NullStmtClass:
357     K = CXCursor_NullStmt;
358     break;
359 
360   case Stmt::LabelStmtClass:
361     K = CXCursor_LabelStmt;
362     break;
363 
364   case Stmt::AttributedStmtClass:
365     K = CXCursor_UnexposedStmt;
366     break;
367 
368   case Stmt::DeclStmtClass:
369     K = CXCursor_DeclStmt;
370     break;
371 
372   case Stmt::CapturedStmtClass:
373     K = CXCursor_UnexposedStmt;
374     break;
375 
376   case Stmt::IntegerLiteralClass:
377     K = CXCursor_IntegerLiteral;
378     break;
379 
380   case Stmt::FixedPointLiteralClass:
381     K = CXCursor_FixedPointLiteral;
382     break;
383 
384   case Stmt::FloatingLiteralClass:
385     K = CXCursor_FloatingLiteral;
386     break;
387 
388   case Stmt::ImaginaryLiteralClass:
389     K = CXCursor_ImaginaryLiteral;
390     break;
391 
392   case Stmt::StringLiteralClass:
393     K = CXCursor_StringLiteral;
394     break;
395 
396   case Stmt::CharacterLiteralClass:
397     K = CXCursor_CharacterLiteral;
398     break;
399 
400   case Stmt::ConstantExprClass:
401     return MakeCXCursor(cast<ConstantExpr>(S)->getSubExpr(), Parent, TU,
402                         RegionOfInterest);
403 
404   case Stmt::ParenExprClass:
405     K = CXCursor_ParenExpr;
406     break;
407 
408   case Stmt::UnaryOperatorClass:
409     K = CXCursor_UnaryOperator;
410     break;
411 
412   case Stmt::UnaryExprOrTypeTraitExprClass:
413   case Stmt::CXXNoexceptExprClass:
414     K = CXCursor_UnaryExpr;
415     break;
416 
417   case Stmt::MSPropertySubscriptExprClass:
418   case Stmt::ArraySubscriptExprClass:
419     K = CXCursor_ArraySubscriptExpr;
420     break;
421 
422   case Stmt::MatrixSubscriptExprClass:
423     // TODO: add support for MatrixSubscriptExpr.
424     K = CXCursor_UnexposedExpr;
425     break;
426 
427   case Stmt::ArraySectionExprClass:
428     K = CXCursor_ArraySectionExpr;
429     break;
430 
431   case Stmt::OMPArrayShapingExprClass:
432     K = CXCursor_OMPArrayShapingExpr;
433     break;
434 
435   case Stmt::OMPIteratorExprClass:
436     K = CXCursor_OMPIteratorExpr;
437     break;
438 
439   case Stmt::BinaryOperatorClass:
440     K = CXCursor_BinaryOperator;
441     break;
442 
443   case Stmt::CompoundAssignOperatorClass:
444     K = CXCursor_CompoundAssignOperator;
445     break;
446 
447   case Stmt::ConditionalOperatorClass:
448     K = CXCursor_ConditionalOperator;
449     break;
450 
451   case Stmt::CStyleCastExprClass:
452     K = CXCursor_CStyleCastExpr;
453     break;
454 
455   case Stmt::CompoundLiteralExprClass:
456     K = CXCursor_CompoundLiteralExpr;
457     break;
458 
459   case Stmt::InitListExprClass:
460     K = CXCursor_InitListExpr;
461     break;
462 
463   case Stmt::AddrLabelExprClass:
464     K = CXCursor_AddrLabelExpr;
465     break;
466 
467   case Stmt::StmtExprClass:
468     K = CXCursor_StmtExpr;
469     break;
470 
471   case Stmt::GenericSelectionExprClass:
472     K = CXCursor_GenericSelectionExpr;
473     break;
474 
475   case Stmt::GNUNullExprClass:
476     K = CXCursor_GNUNullExpr;
477     break;
478 
479   case Stmt::CXXStaticCastExprClass:
480     K = CXCursor_CXXStaticCastExpr;
481     break;
482 
483   case Stmt::CXXDynamicCastExprClass:
484     K = CXCursor_CXXDynamicCastExpr;
485     break;
486 
487   case Stmt::CXXReinterpretCastExprClass:
488     K = CXCursor_CXXReinterpretCastExpr;
489     break;
490 
491   case Stmt::CXXConstCastExprClass:
492     K = CXCursor_CXXConstCastExpr;
493     break;
494 
495   case Stmt::CXXFunctionalCastExprClass:
496     K = CXCursor_CXXFunctionalCastExpr;
497     break;
498 
499   case Stmt::CXXAddrspaceCastExprClass:
500     K = CXCursor_CXXAddrspaceCastExpr;
501     break;
502 
503   case Stmt::CXXTypeidExprClass:
504     K = CXCursor_CXXTypeidExpr;
505     break;
506 
507   case Stmt::CXXBoolLiteralExprClass:
508     K = CXCursor_CXXBoolLiteralExpr;
509     break;
510 
511   case Stmt::CXXNullPtrLiteralExprClass:
512     K = CXCursor_CXXNullPtrLiteralExpr;
513     break;
514 
515   case Stmt::CXXThisExprClass:
516     K = CXCursor_CXXThisExpr;
517     break;
518 
519   case Stmt::CXXThrowExprClass:
520     K = CXCursor_CXXThrowExpr;
521     break;
522 
523   case Stmt::CXXNewExprClass:
524     K = CXCursor_CXXNewExpr;
525     break;
526 
527   case Stmt::CXXDeleteExprClass:
528     K = CXCursor_CXXDeleteExpr;
529     break;
530 
531   case Stmt::ObjCStringLiteralClass:
532     K = CXCursor_ObjCStringLiteral;
533     break;
534 
535   case Stmt::ObjCEncodeExprClass:
536     K = CXCursor_ObjCEncodeExpr;
537     break;
538 
539   case Stmt::ObjCSelectorExprClass:
540     K = CXCursor_ObjCSelectorExpr;
541     break;
542 
543   case Stmt::ObjCProtocolExprClass:
544     K = CXCursor_ObjCProtocolExpr;
545     break;
546 
547   case Stmt::ObjCBoolLiteralExprClass:
548     K = CXCursor_ObjCBoolLiteralExpr;
549     break;
550 
551   case Stmt::ObjCAvailabilityCheckExprClass:
552     K = CXCursor_ObjCAvailabilityCheckExpr;
553     break;
554 
555   case Stmt::ObjCBridgedCastExprClass:
556     K = CXCursor_ObjCBridgedCastExpr;
557     break;
558 
559   case Stmt::BlockExprClass:
560     K = CXCursor_BlockExpr;
561     break;
562 
563   case Stmt::PackExpansionExprClass:
564     K = CXCursor_PackExpansionExpr;
565     break;
566 
567   case Stmt::SizeOfPackExprClass:
568     K = CXCursor_SizeOfPackExpr;
569     break;
570 
571   case Stmt::PackIndexingExprClass:
572     K = CXCursor_PackIndexingExpr;
573     break;
574 
575   case Stmt::DeclRefExprClass:
576     if (const ImplicitParamDecl *IPD = dyn_cast_or_null<ImplicitParamDecl>(
577             cast<DeclRefExpr>(S)->getDecl())) {
578       if (const ObjCMethodDecl *MD =
579               dyn_cast<ObjCMethodDecl>(IPD->getDeclContext())) {
580         if (MD->getSelfDecl() == IPD) {
581           K = CXCursor_ObjCSelfExpr;
582           break;
583         }
584       }
585     }
586 
587     K = CXCursor_DeclRefExpr;
588     break;
589 
590   case Stmt::DependentScopeDeclRefExprClass:
591   case Stmt::SubstNonTypeTemplateParmExprClass:
592   case Stmt::SubstNonTypeTemplateParmPackExprClass:
593   case Stmt::FunctionParmPackExprClass:
594   case Stmt::UnresolvedLookupExprClass:
595   case Stmt::TypoExprClass: // A typo could actually be a DeclRef or a MemberRef
596     K = CXCursor_DeclRefExpr;
597     break;
598 
599   case Stmt::CXXDependentScopeMemberExprClass:
600   case Stmt::CXXPseudoDestructorExprClass:
601   case Stmt::MemberExprClass:
602   case Stmt::MSPropertyRefExprClass:
603   case Stmt::ObjCIsaExprClass:
604   case Stmt::ObjCIvarRefExprClass:
605   case Stmt::ObjCPropertyRefExprClass:
606   case Stmt::UnresolvedMemberExprClass:
607     K = CXCursor_MemberRefExpr;
608     break;
609 
610   case Stmt::CallExprClass:
611   case Stmt::CXXOperatorCallExprClass:
612   case Stmt::CXXMemberCallExprClass:
613   case Stmt::CUDAKernelCallExprClass:
614   case Stmt::CXXConstructExprClass:
615   case Stmt::CXXInheritedCtorInitExprClass:
616   case Stmt::CXXTemporaryObjectExprClass:
617   case Stmt::CXXUnresolvedConstructExprClass:
618   case Stmt::UserDefinedLiteralClass:
619     K = CXCursor_CallExpr;
620     break;
621 
622   case Stmt::LambdaExprClass:
623     K = CXCursor_LambdaExpr;
624     break;
625 
626   case Stmt::ObjCMessageExprClass: {
627     K = CXCursor_ObjCMessageExpr;
628     int SelectorIdIndex = -1;
629     // Check if cursor points to a selector id.
630     if (RegionOfInterest.isValid() &&
631         RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
632       SmallVector<SourceLocation, 16> SelLocs;
633       cast<ObjCMessageExpr>(S)->getSelectorLocs(SelLocs);
634       SmallVectorImpl<SourceLocation>::iterator I =
635           llvm::find(SelLocs, RegionOfInterest.getBegin());
636       if (I != SelLocs.end())
637         SelectorIdIndex = I - SelLocs.begin();
638     }
639     CXCursor C = {K, 0, {Parent, S, TU}};
640     return getSelectorIdentifierCursor(SelectorIdIndex, C);
641   }
642 
643   case Stmt::ConceptSpecializationExprClass:
644     K = CXCursor_ConceptSpecializationExpr;
645     break;
646 
647   case Stmt::RequiresExprClass:
648     K = CXCursor_RequiresExpr;
649     break;
650 
651   case Stmt::CXXParenListInitExprClass:
652     K = CXCursor_CXXParenListInitExpr;
653     break;
654 
655   case Stmt::MSDependentExistsStmtClass:
656     K = CXCursor_UnexposedStmt;
657     break;
658   case Stmt::OMPCanonicalLoopClass:
659     K = CXCursor_OMPCanonicalLoop;
660     break;
661   case Stmt::OMPMetaDirectiveClass:
662     K = CXCursor_OMPMetaDirective;
663     break;
664   case Stmt::OMPParallelDirectiveClass:
665     K = CXCursor_OMPParallelDirective;
666     break;
667   case Stmt::OMPSimdDirectiveClass:
668     K = CXCursor_OMPSimdDirective;
669     break;
670   case Stmt::OMPTileDirectiveClass:
671     K = CXCursor_OMPTileDirective;
672     break;
673   case Stmt::OMPUnrollDirectiveClass:
674     K = CXCursor_OMPUnrollDirective;
675     break;
676   case Stmt::OMPForDirectiveClass:
677     K = CXCursor_OMPForDirective;
678     break;
679   case Stmt::OMPForSimdDirectiveClass:
680     K = CXCursor_OMPForSimdDirective;
681     break;
682   case Stmt::OMPSectionsDirectiveClass:
683     K = CXCursor_OMPSectionsDirective;
684     break;
685   case Stmt::OMPSectionDirectiveClass:
686     K = CXCursor_OMPSectionDirective;
687     break;
688   case Stmt::OMPScopeDirectiveClass:
689     K = CXCursor_OMPScopeDirective;
690     break;
691   case Stmt::OMPSingleDirectiveClass:
692     K = CXCursor_OMPSingleDirective;
693     break;
694   case Stmt::OMPMasterDirectiveClass:
695     K = CXCursor_OMPMasterDirective;
696     break;
697   case Stmt::OMPCriticalDirectiveClass:
698     K = CXCursor_OMPCriticalDirective;
699     break;
700   case Stmt::OMPParallelForDirectiveClass:
701     K = CXCursor_OMPParallelForDirective;
702     break;
703   case Stmt::OMPParallelForSimdDirectiveClass:
704     K = CXCursor_OMPParallelForSimdDirective;
705     break;
706   case Stmt::OMPParallelMasterDirectiveClass:
707     K = CXCursor_OMPParallelMasterDirective;
708     break;
709   case Stmt::OMPParallelMaskedDirectiveClass:
710     K = CXCursor_OMPParallelMaskedDirective;
711     break;
712   case Stmt::OMPParallelSectionsDirectiveClass:
713     K = CXCursor_OMPParallelSectionsDirective;
714     break;
715   case Stmt::OMPTaskDirectiveClass:
716     K = CXCursor_OMPTaskDirective;
717     break;
718   case Stmt::OMPTaskyieldDirectiveClass:
719     K = CXCursor_OMPTaskyieldDirective;
720     break;
721   case Stmt::OMPBarrierDirectiveClass:
722     K = CXCursor_OMPBarrierDirective;
723     break;
724   case Stmt::OMPTaskwaitDirectiveClass:
725     K = CXCursor_OMPTaskwaitDirective;
726     break;
727   case Stmt::OMPErrorDirectiveClass:
728     K = CXCursor_OMPErrorDirective;
729     break;
730   case Stmt::OMPTaskgroupDirectiveClass:
731     K = CXCursor_OMPTaskgroupDirective;
732     break;
733   case Stmt::OMPFlushDirectiveClass:
734     K = CXCursor_OMPFlushDirective;
735     break;
736   case Stmt::OMPDepobjDirectiveClass:
737     K = CXCursor_OMPDepobjDirective;
738     break;
739   case Stmt::OMPScanDirectiveClass:
740     K = CXCursor_OMPScanDirective;
741     break;
742   case Stmt::OMPOrderedDirectiveClass:
743     K = CXCursor_OMPOrderedDirective;
744     break;
745   case Stmt::OMPAtomicDirectiveClass:
746     K = CXCursor_OMPAtomicDirective;
747     break;
748   case Stmt::OMPTargetDirectiveClass:
749     K = CXCursor_OMPTargetDirective;
750     break;
751   case Stmt::OMPTargetDataDirectiveClass:
752     K = CXCursor_OMPTargetDataDirective;
753     break;
754   case Stmt::OMPTargetEnterDataDirectiveClass:
755     K = CXCursor_OMPTargetEnterDataDirective;
756     break;
757   case Stmt::OMPTargetExitDataDirectiveClass:
758     K = CXCursor_OMPTargetExitDataDirective;
759     break;
760   case Stmt::OMPTargetParallelDirectiveClass:
761     K = CXCursor_OMPTargetParallelDirective;
762     break;
763   case Stmt::OMPTargetParallelForDirectiveClass:
764     K = CXCursor_OMPTargetParallelForDirective;
765     break;
766   case Stmt::OMPTargetUpdateDirectiveClass:
767     K = CXCursor_OMPTargetUpdateDirective;
768     break;
769   case Stmt::OMPTeamsDirectiveClass:
770     K = CXCursor_OMPTeamsDirective;
771     break;
772   case Stmt::OMPCancellationPointDirectiveClass:
773     K = CXCursor_OMPCancellationPointDirective;
774     break;
775   case Stmt::OMPCancelDirectiveClass:
776     K = CXCursor_OMPCancelDirective;
777     break;
778   case Stmt::OMPTaskLoopDirectiveClass:
779     K = CXCursor_OMPTaskLoopDirective;
780     break;
781   case Stmt::OMPTaskLoopSimdDirectiveClass:
782     K = CXCursor_OMPTaskLoopSimdDirective;
783     break;
784   case Stmt::OMPMasterTaskLoopDirectiveClass:
785     K = CXCursor_OMPMasterTaskLoopDirective;
786     break;
787   case Stmt::OMPMaskedTaskLoopDirectiveClass:
788     K = CXCursor_OMPMaskedTaskLoopDirective;
789     break;
790   case Stmt::OMPMasterTaskLoopSimdDirectiveClass:
791     K = CXCursor_OMPMasterTaskLoopSimdDirective;
792     break;
793   case Stmt::OMPMaskedTaskLoopSimdDirectiveClass:
794     K = CXCursor_OMPMaskedTaskLoopSimdDirective;
795     break;
796   case Stmt::OMPParallelMasterTaskLoopDirectiveClass:
797     K = CXCursor_OMPParallelMasterTaskLoopDirective;
798     break;
799   case Stmt::OMPParallelMaskedTaskLoopDirectiveClass:
800     K = CXCursor_OMPParallelMaskedTaskLoopDirective;
801     break;
802   case Stmt::OMPParallelMasterTaskLoopSimdDirectiveClass:
803     K = CXCursor_OMPParallelMasterTaskLoopSimdDirective;
804     break;
805   case Stmt::OMPParallelMaskedTaskLoopSimdDirectiveClass:
806     K = CXCursor_OMPParallelMaskedTaskLoopSimdDirective;
807     break;
808   case Stmt::OMPDistributeDirectiveClass:
809     K = CXCursor_OMPDistributeDirective;
810     break;
811   case Stmt::OMPDistributeParallelForDirectiveClass:
812     K = CXCursor_OMPDistributeParallelForDirective;
813     break;
814   case Stmt::OMPDistributeParallelForSimdDirectiveClass:
815     K = CXCursor_OMPDistributeParallelForSimdDirective;
816     break;
817   case Stmt::OMPDistributeSimdDirectiveClass:
818     K = CXCursor_OMPDistributeSimdDirective;
819     break;
820   case Stmt::OMPTargetParallelForSimdDirectiveClass:
821     K = CXCursor_OMPTargetParallelForSimdDirective;
822     break;
823   case Stmt::OMPTargetSimdDirectiveClass:
824     K = CXCursor_OMPTargetSimdDirective;
825     break;
826   case Stmt::OMPTeamsDistributeDirectiveClass:
827     K = CXCursor_OMPTeamsDistributeDirective;
828     break;
829   case Stmt::OMPTeamsDistributeSimdDirectiveClass:
830     K = CXCursor_OMPTeamsDistributeSimdDirective;
831     break;
832   case Stmt::OMPTeamsDistributeParallelForSimdDirectiveClass:
833     K = CXCursor_OMPTeamsDistributeParallelForSimdDirective;
834     break;
835   case Stmt::OMPTeamsDistributeParallelForDirectiveClass:
836     K = CXCursor_OMPTeamsDistributeParallelForDirective;
837     break;
838   case Stmt::OMPTargetTeamsDirectiveClass:
839     K = CXCursor_OMPTargetTeamsDirective;
840     break;
841   case Stmt::OMPTargetTeamsDistributeDirectiveClass:
842     K = CXCursor_OMPTargetTeamsDistributeDirective;
843     break;
844   case Stmt::OMPTargetTeamsDistributeParallelForDirectiveClass:
845     K = CXCursor_OMPTargetTeamsDistributeParallelForDirective;
846     break;
847   case Stmt::OMPTargetTeamsDistributeParallelForSimdDirectiveClass:
848     K = CXCursor_OMPTargetTeamsDistributeParallelForSimdDirective;
849     break;
850   case Stmt::OMPTargetTeamsDistributeSimdDirectiveClass:
851     K = CXCursor_OMPTargetTeamsDistributeSimdDirective;
852     break;
853   case Stmt::OMPInteropDirectiveClass:
854     K = CXCursor_OMPInteropDirective;
855     break;
856   case Stmt::OMPDispatchDirectiveClass:
857     K = CXCursor_OMPDispatchDirective;
858     break;
859   case Stmt::OMPMaskedDirectiveClass:
860     K = CXCursor_OMPMaskedDirective;
861     break;
862   case Stmt::OMPGenericLoopDirectiveClass:
863     K = CXCursor_OMPGenericLoopDirective;
864     break;
865   case Stmt::OMPTeamsGenericLoopDirectiveClass:
866     K = CXCursor_OMPTeamsGenericLoopDirective;
867     break;
868   case Stmt::OMPTargetTeamsGenericLoopDirectiveClass:
869     K = CXCursor_OMPTargetTeamsGenericLoopDirective;
870     break;
871   case Stmt::OMPParallelGenericLoopDirectiveClass:
872     K = CXCursor_OMPParallelGenericLoopDirective;
873     break;
874   case Stmt::OpenACCComputeConstructClass:
875     K = CXCursor_OpenACCComputeConstruct;
876     break;
877   case Stmt::OpenACCLoopConstructClass:
878     K = CXCursor_OpenACCLoopConstruct;
879     break;
880   case Stmt::OMPTargetParallelGenericLoopDirectiveClass:
881     K = CXCursor_OMPTargetParallelGenericLoopDirective;
882     break;
883   case Stmt::BuiltinBitCastExprClass:
884     K = CXCursor_BuiltinBitCastExpr;
885   }
886 
887   CXCursor C = {K, 0, {Parent, S, TU}};
888   return C;
889 }
890 
891 CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
892                                                SourceLocation Loc,
893                                                CXTranslationUnit TU) {
894   assert(Super && TU && "Invalid arguments!");
895   void *RawLoc = Loc.getPtrEncoding();
896   CXCursor C = {CXCursor_ObjCSuperClassRef, 0, {Super, RawLoc, TU}};
897   return C;
898 }
899 
900 std::pair<const ObjCInterfaceDecl *, SourceLocation>
901 cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
902   assert(C.kind == CXCursor_ObjCSuperClassRef);
903   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
904                         SourceLocation::getFromPtrEncoding(C.data[1]));
905 }
906 
907 CXCursor cxcursor::MakeCursorObjCProtocolRef(const ObjCProtocolDecl *Proto,
908                                              SourceLocation Loc,
909                                              CXTranslationUnit TU) {
910   assert(Proto && TU && "Invalid arguments!");
911   void *RawLoc = Loc.getPtrEncoding();
912   CXCursor C = {CXCursor_ObjCProtocolRef, 0, {Proto, RawLoc, TU}};
913   return C;
914 }
915 
916 std::pair<const ObjCProtocolDecl *, SourceLocation>
917 cxcursor::getCursorObjCProtocolRef(CXCursor C) {
918   assert(C.kind == CXCursor_ObjCProtocolRef);
919   return std::make_pair(static_cast<const ObjCProtocolDecl *>(C.data[0]),
920                         SourceLocation::getFromPtrEncoding(C.data[1]));
921 }
922 
923 CXCursor cxcursor::MakeCursorObjCClassRef(const ObjCInterfaceDecl *Class,
924                                           SourceLocation Loc,
925                                           CXTranslationUnit TU) {
926   // 'Class' can be null for invalid code.
927   if (!Class)
928     return MakeCXCursorInvalid(CXCursor_InvalidCode);
929   assert(TU && "Invalid arguments!");
930   void *RawLoc = Loc.getPtrEncoding();
931   CXCursor C = {CXCursor_ObjCClassRef, 0, {Class, RawLoc, TU}};
932   return C;
933 }
934 
935 std::pair<const ObjCInterfaceDecl *, SourceLocation>
936 cxcursor::getCursorObjCClassRef(CXCursor C) {
937   assert(C.kind == CXCursor_ObjCClassRef);
938   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
939                         SourceLocation::getFromPtrEncoding(C.data[1]));
940 }
941 
942 CXCursor cxcursor::MakeCursorTypeRef(const TypeDecl *Type, SourceLocation Loc,
943                                      CXTranslationUnit TU) {
944   assert(Type && TU && "Invalid arguments!");
945   void *RawLoc = Loc.getPtrEncoding();
946   CXCursor C = {CXCursor_TypeRef, 0, {Type, RawLoc, TU}};
947   return C;
948 }
949 
950 std::pair<const TypeDecl *, SourceLocation>
951 cxcursor::getCursorTypeRef(CXCursor C) {
952   assert(C.kind == CXCursor_TypeRef);
953   return std::make_pair(static_cast<const TypeDecl *>(C.data[0]),
954                         SourceLocation::getFromPtrEncoding(C.data[1]));
955 }
956 
957 CXCursor cxcursor::MakeCursorTemplateRef(const TemplateDecl *Template,
958                                          SourceLocation Loc,
959                                          CXTranslationUnit TU) {
960   assert(Template && TU && "Invalid arguments!");
961   void *RawLoc = Loc.getPtrEncoding();
962   CXCursor C = {CXCursor_TemplateRef, 0, {Template, RawLoc, TU}};
963   return C;
964 }
965 
966 std::pair<const TemplateDecl *, SourceLocation>
967 cxcursor::getCursorTemplateRef(CXCursor C) {
968   assert(C.kind == CXCursor_TemplateRef);
969   return std::make_pair(static_cast<const TemplateDecl *>(C.data[0]),
970                         SourceLocation::getFromPtrEncoding(C.data[1]));
971 }
972 
973 CXCursor cxcursor::MakeCursorNamespaceRef(const NamedDecl *NS,
974                                           SourceLocation Loc,
975                                           CXTranslationUnit TU) {
976 
977   assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
978          "Invalid arguments!");
979   void *RawLoc = Loc.getPtrEncoding();
980   CXCursor C = {CXCursor_NamespaceRef, 0, {NS, RawLoc, TU}};
981   return C;
982 }
983 
984 std::pair<const NamedDecl *, SourceLocation>
985 cxcursor::getCursorNamespaceRef(CXCursor C) {
986   assert(C.kind == CXCursor_NamespaceRef);
987   return std::make_pair(static_cast<const NamedDecl *>(C.data[0]),
988                         SourceLocation::getFromPtrEncoding(C.data[1]));
989 }
990 
991 CXCursor cxcursor::MakeCursorVariableRef(const VarDecl *Var, SourceLocation Loc,
992                                          CXTranslationUnit TU) {
993 
994   assert(Var && TU && "Invalid arguments!");
995   void *RawLoc = Loc.getPtrEncoding();
996   CXCursor C = {CXCursor_VariableRef, 0, {Var, RawLoc, TU}};
997   return C;
998 }
999 
1000 std::pair<const VarDecl *, SourceLocation>
1001 cxcursor::getCursorVariableRef(CXCursor C) {
1002   assert(C.kind == CXCursor_VariableRef);
1003   return std::make_pair(static_cast<const VarDecl *>(C.data[0]),
1004                         SourceLocation::getFromPtrEncoding(C.data[1]));
1005 }
1006 
1007 CXCursor cxcursor::MakeCursorMemberRef(const FieldDecl *Field,
1008                                        SourceLocation Loc,
1009                                        CXTranslationUnit TU) {
1010 
1011   assert(Field && TU && "Invalid arguments!");
1012   void *RawLoc = Loc.getPtrEncoding();
1013   CXCursor C = {CXCursor_MemberRef, 0, {Field, RawLoc, TU}};
1014   return C;
1015 }
1016 
1017 std::pair<const FieldDecl *, SourceLocation>
1018 cxcursor::getCursorMemberRef(CXCursor C) {
1019   assert(C.kind == CXCursor_MemberRef);
1020   return std::make_pair(static_cast<const FieldDecl *>(C.data[0]),
1021                         SourceLocation::getFromPtrEncoding(C.data[1]));
1022 }
1023 
1024 CXCursor cxcursor::MakeCursorCXXBaseSpecifier(const CXXBaseSpecifier *B,
1025                                               CXTranslationUnit TU) {
1026   CXCursor C = {CXCursor_CXXBaseSpecifier, 0, {B, nullptr, TU}};
1027   return C;
1028 }
1029 
1030 const CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
1031   assert(C.kind == CXCursor_CXXBaseSpecifier);
1032   return static_cast<const CXXBaseSpecifier *>(C.data[0]);
1033 }
1034 
1035 CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
1036                                                     CXTranslationUnit TU) {
1037   CXCursor C = {
1038       CXCursor_PreprocessingDirective,
1039       0,
1040       {Range.getBegin().getPtrEncoding(), Range.getEnd().getPtrEncoding(), TU}};
1041   return C;
1042 }
1043 
1044 SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
1045   assert(C.kind == CXCursor_PreprocessingDirective);
1046   SourceRange Range(SourceLocation::getFromPtrEncoding(C.data[0]),
1047                     SourceLocation::getFromPtrEncoding(C.data[1]));
1048   ASTUnit *TU = getCursorASTUnit(C);
1049   return TU->mapRangeFromPreamble(Range);
1050 }
1051 
1052 CXCursor cxcursor::MakeMacroDefinitionCursor(const MacroDefinitionRecord *MI,
1053                                              CXTranslationUnit TU) {
1054   CXCursor C = {CXCursor_MacroDefinition, 0, {MI, nullptr, TU}};
1055   return C;
1056 }
1057 
1058 const MacroDefinitionRecord *cxcursor::getCursorMacroDefinition(CXCursor C) {
1059   assert(C.kind == CXCursor_MacroDefinition);
1060   return static_cast<const MacroDefinitionRecord *>(C.data[0]);
1061 }
1062 
1063 CXCursor cxcursor::MakeMacroExpansionCursor(MacroExpansion *MI,
1064                                             CXTranslationUnit TU) {
1065   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, nullptr, TU}};
1066   return C;
1067 }
1068 
1069 CXCursor cxcursor::MakeMacroExpansionCursor(MacroDefinitionRecord *MI,
1070                                             SourceLocation Loc,
1071                                             CXTranslationUnit TU) {
1072   assert(Loc.isValid());
1073   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, Loc.getPtrEncoding(), TU}};
1074   return C;
1075 }
1076 
1077 const IdentifierInfo *cxcursor::MacroExpansionCursor::getName() const {
1078   if (isPseudo())
1079     return getAsMacroDefinition()->getName();
1080   return getAsMacroExpansion()->getName();
1081 }
1082 const MacroDefinitionRecord *
1083 cxcursor::MacroExpansionCursor::getDefinition() const {
1084   if (isPseudo())
1085     return getAsMacroDefinition();
1086   return getAsMacroExpansion()->getDefinition();
1087 }
1088 SourceRange cxcursor::MacroExpansionCursor::getSourceRange() const {
1089   if (isPseudo())
1090     return getPseudoLoc();
1091   return getAsMacroExpansion()->getSourceRange();
1092 }
1093 
1094 CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
1095                                                 CXTranslationUnit TU) {
1096   CXCursor C = {CXCursor_InclusionDirective, 0, {ID, nullptr, TU}};
1097   return C;
1098 }
1099 
1100 const InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
1101   assert(C.kind == CXCursor_InclusionDirective);
1102   return static_cast<const InclusionDirective *>(C.data[0]);
1103 }
1104 
1105 CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
1106                                       CXTranslationUnit TU) {
1107 
1108   assert(Label && TU && "Invalid arguments!");
1109   void *RawLoc = Loc.getPtrEncoding();
1110   CXCursor C = {CXCursor_LabelRef, 0, {Label, RawLoc, TU}};
1111   return C;
1112 }
1113 
1114 std::pair<const LabelStmt *, SourceLocation>
1115 cxcursor::getCursorLabelRef(CXCursor C) {
1116   assert(C.kind == CXCursor_LabelRef);
1117   return std::make_pair(static_cast<const LabelStmt *>(C.data[0]),
1118                         SourceLocation::getFromPtrEncoding(C.data[1]));
1119 }
1120 
1121 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const OverloadExpr *E,
1122                                                CXTranslationUnit TU) {
1123   assert(E && TU && "Invalid arguments!");
1124   OverloadedDeclRefStorage Storage(E);
1125   void *RawLoc = E->getNameLoc().getPtrEncoding();
1126   CXCursor C = {
1127       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1128   return C;
1129 }
1130 
1131 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const Decl *D,
1132                                                SourceLocation Loc,
1133                                                CXTranslationUnit TU) {
1134   assert(D && TU && "Invalid arguments!");
1135   void *RawLoc = Loc.getPtrEncoding();
1136   OverloadedDeclRefStorage Storage(D);
1137   CXCursor C = {
1138       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1139   return C;
1140 }
1141 
1142 CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
1143                                                SourceLocation Loc,
1144                                                CXTranslationUnit TU) {
1145   assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
1146   void *RawLoc = Loc.getPtrEncoding();
1147   OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
1148   CXCursor C = {
1149       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1150   return C;
1151 }
1152 
1153 std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
1154 cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
1155   assert(C.kind == CXCursor_OverloadedDeclRef);
1156   return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(
1157                             const_cast<void *>(C.data[0])),
1158                         SourceLocation::getFromPtrEncoding(C.data[1]));
1159 }
1160 
1161 const Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
1162   return static_cast<const Decl *>(Cursor.data[0]);
1163 }
1164 
1165 const Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
1166   return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
1167 }
1168 
1169 const Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
1170   if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
1171       Cursor.kind == CXCursor_ObjCProtocolRef ||
1172       Cursor.kind == CXCursor_ObjCClassRef)
1173     return nullptr;
1174 
1175   return static_cast<const Stmt *>(Cursor.data[1]);
1176 }
1177 
1178 const Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
1179   return static_cast<const Attr *>(Cursor.data[1]);
1180 }
1181 
1182 ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
1183   return getCursorASTUnit(Cursor)->getASTContext();
1184 }
1185 
1186 ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
1187   CXTranslationUnit TU = getCursorTU(Cursor);
1188   if (!TU)
1189     return nullptr;
1190   return cxtu::getASTUnit(TU);
1191 }
1192 
1193 CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
1194   return static_cast<CXTranslationUnit>(const_cast<void *>(Cursor.data[2]));
1195 }
1196 
1197 void cxcursor::getOverriddenCursors(CXCursor cursor,
1198                                     SmallVectorImpl<CXCursor> &overridden) {
1199   assert(clang_isDeclaration(cursor.kind));
1200   const NamedDecl *D = dyn_cast_or_null<NamedDecl>(getCursorDecl(cursor));
1201   if (!D)
1202     return;
1203 
1204   CXTranslationUnit TU = getCursorTU(cursor);
1205   SmallVector<const NamedDecl *, 8> OverDecls;
1206   D->getASTContext().getOverriddenMethods(D, OverDecls);
1207 
1208   for (SmallVectorImpl<const NamedDecl *>::iterator I = OverDecls.begin(),
1209                                                     E = OverDecls.end();
1210        I != E; ++I) {
1211     overridden.push_back(MakeCXCursor(*I, TU));
1212   }
1213 }
1214 
1215 std::pair<int, SourceLocation>
1216 cxcursor::getSelectorIdentifierIndexAndLoc(CXCursor cursor) {
1217   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1218     if (cursor.xdata != -1)
1219       return std::make_pair(cursor.xdata,
1220                             cast<ObjCMessageExpr>(getCursorExpr(cursor))
1221                                 ->getSelectorLoc(cursor.xdata));
1222   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1223              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1224     if (cursor.xdata != -1)
1225       return std::make_pair(cursor.xdata,
1226                             cast<ObjCMethodDecl>(getCursorDecl(cursor))
1227                                 ->getSelectorLoc(cursor.xdata));
1228   }
1229 
1230   return std::make_pair(-1, SourceLocation());
1231 }
1232 
1233 CXCursor cxcursor::getSelectorIdentifierCursor(int SelIdx, CXCursor cursor) {
1234   CXCursor newCursor = cursor;
1235 
1236   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1237     if (SelIdx == -1 ||
1238         unsigned(SelIdx) >=
1239             cast<ObjCMessageExpr>(getCursorExpr(cursor))->getNumSelectorLocs())
1240       newCursor.xdata = -1;
1241     else
1242       newCursor.xdata = SelIdx;
1243   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1244              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1245     if (SelIdx == -1 ||
1246         unsigned(SelIdx) >=
1247             cast<ObjCMethodDecl>(getCursorDecl(cursor))->getNumSelectorLocs())
1248       newCursor.xdata = -1;
1249     else
1250       newCursor.xdata = SelIdx;
1251   }
1252 
1253   return newCursor;
1254 }
1255 
1256 CXCursor cxcursor::getTypeRefCursor(CXCursor cursor) {
1257   if (cursor.kind != CXCursor_CallExpr)
1258     return cursor;
1259 
1260   if (cursor.xdata == 0)
1261     return cursor;
1262 
1263   const Expr *E = getCursorExpr(cursor);
1264   TypeSourceInfo *Type = nullptr;
1265   if (const CXXUnresolvedConstructExpr *UnCtor =
1266           dyn_cast<CXXUnresolvedConstructExpr>(E)) {
1267     Type = UnCtor->getTypeSourceInfo();
1268   } else if (const CXXTemporaryObjectExpr *Tmp =
1269                  dyn_cast<CXXTemporaryObjectExpr>(E)) {
1270     Type = Tmp->getTypeSourceInfo();
1271   }
1272 
1273   if (!Type)
1274     return cursor;
1275 
1276   CXTranslationUnit TU = getCursorTU(cursor);
1277   QualType Ty = Type->getType();
1278   TypeLoc TL = Type->getTypeLoc();
1279   SourceLocation Loc = TL.getBeginLoc();
1280 
1281   if (const ElaboratedType *ElabT = Ty->getAs<ElaboratedType>()) {
1282     Ty = ElabT->getNamedType();
1283     ElaboratedTypeLoc ElabTL = TL.castAs<ElaboratedTypeLoc>();
1284     Loc = ElabTL.getNamedTypeLoc().getBeginLoc();
1285   }
1286 
1287   if (const TypedefType *Typedef = Ty->getAs<TypedefType>())
1288     return MakeCursorTypeRef(Typedef->getDecl(), Loc, TU);
1289   if (const TagType *Tag = Ty->getAs<TagType>())
1290     return MakeCursorTypeRef(Tag->getDecl(), Loc, TU);
1291   if (const TemplateTypeParmType *TemplP = Ty->getAs<TemplateTypeParmType>())
1292     return MakeCursorTypeRef(TemplP->getDecl(), Loc, TU);
1293 
1294   return cursor;
1295 }
1296 
1297 bool cxcursor::operator==(CXCursor X, CXCursor Y) {
1298   return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
1299          X.data[2] == Y.data[2];
1300 }
1301 
1302 // FIXME: Remove once we can model DeclGroups and their appropriate ranges
1303 // properly in the ASTs.
1304 bool cxcursor::isFirstInDeclGroup(CXCursor C) {
1305   assert(clang_isDeclaration(C.kind));
1306   return ((uintptr_t)(C.data[1])) != 0;
1307 }
1308 
1309 //===----------------------------------------------------------------------===//
1310 // libclang CXCursor APIs
1311 //===----------------------------------------------------------------------===//
1312 
1313 int clang_Cursor_isNull(CXCursor cursor) {
1314   return clang_equalCursors(cursor, clang_getNullCursor());
1315 }
1316 
1317 CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor cursor) {
1318   return getCursorTU(cursor);
1319 }
1320 
1321 int clang_Cursor_getNumArguments(CXCursor C) {
1322   if (clang_isDeclaration(C.kind)) {
1323     const Decl *D = cxcursor::getCursorDecl(C);
1324     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D))
1325       return MD->param_size();
1326     if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
1327       return FD->param_size();
1328   }
1329 
1330   if (clang_isExpression(C.kind)) {
1331     const Expr *E = cxcursor::getCursorExpr(C);
1332     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1333       return CE->getNumArgs();
1334     }
1335     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1336       return CE->getNumArgs();
1337     }
1338   }
1339 
1340   return -1;
1341 }
1342 
1343 CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i) {
1344   if (clang_isDeclaration(C.kind)) {
1345     const Decl *D = cxcursor::getCursorDecl(C);
1346     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
1347       if (i < MD->param_size())
1348         return cxcursor::MakeCXCursor(MD->parameters()[i],
1349                                       cxcursor::getCursorTU(C));
1350     } else if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) {
1351       if (i < FD->param_size())
1352         return cxcursor::MakeCXCursor(FD->parameters()[i],
1353                                       cxcursor::getCursorTU(C));
1354     }
1355   }
1356 
1357   if (clang_isExpression(C.kind)) {
1358     const Expr *E = cxcursor::getCursorExpr(C);
1359     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1360       if (i < CE->getNumArgs()) {
1361         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1362                                       cxcursor::getCursorTU(C));
1363       }
1364     }
1365     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1366       if (i < CE->getNumArgs()) {
1367         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1368                                       cxcursor::getCursorTU(C));
1369       }
1370     }
1371   }
1372 
1373   return clang_getNullCursor();
1374 }
1375 
1376 int clang_Cursor_getNumTemplateArguments(CXCursor C) {
1377   CXCursorKind kind = clang_getCursorKind(C);
1378   if (kind != CXCursor_FunctionDecl && kind != CXCursor_StructDecl &&
1379       kind != CXCursor_ClassDecl &&
1380       kind != CXCursor_ClassTemplatePartialSpecialization) {
1381     return -1;
1382   }
1383 
1384   if (const auto *FD =
1385           llvm::dyn_cast_if_present<clang::FunctionDecl>(getCursorDecl(C))) {
1386     const FunctionTemplateSpecializationInfo *SpecInfo =
1387         FD->getTemplateSpecializationInfo();
1388     if (!SpecInfo) {
1389       return -1;
1390     }
1391     return SpecInfo->TemplateArguments->size();
1392   }
1393 
1394   if (const auto *SD =
1395           llvm::dyn_cast_if_present<clang::ClassTemplateSpecializationDecl>(
1396               getCursorDecl(C))) {
1397     return SD->getTemplateArgs().size();
1398   }
1399 
1400   return -1;
1401 }
1402 
1403 enum CXGetTemplateArgumentStatus {
1404   /** The operation completed successfully */
1405   CXGetTemplateArgumentStatus_Success = 0,
1406 
1407   /** The specified cursor did not represent a FunctionDecl or
1408       ClassTemplateSpecializationDecl.                         */
1409   CXGetTemplateArgumentStatus_CursorNotCompatibleDecl = -1,
1410 
1411   /** The specified cursor was not castable to a FunctionDecl or
1412       ClassTemplateSpecializationDecl.                         */
1413   CXGetTemplateArgumentStatus_BadDeclCast = -2,
1414 
1415   /** A NULL FunctionTemplateSpecializationInfo was retrieved. */
1416   CXGetTemplateArgumentStatus_NullTemplSpecInfo = -3,
1417 
1418   /** An invalid (OOB) argument index was specified */
1419   CXGetTemplateArgumentStatus_InvalidIndex = -4
1420 };
1421 
1422 static int clang_Cursor_getTemplateArgument(CXCursor C, unsigned I,
1423                                             TemplateArgument *TA) {
1424   CXCursorKind kind = clang_getCursorKind(C);
1425   if (kind != CXCursor_FunctionDecl && kind != CXCursor_StructDecl &&
1426       kind != CXCursor_ClassDecl &&
1427       kind != CXCursor_ClassTemplatePartialSpecialization) {
1428     return -1;
1429   }
1430 
1431   if (const auto *FD =
1432           llvm::dyn_cast_if_present<clang::FunctionDecl>(getCursorDecl(C))) {
1433 
1434     const FunctionTemplateSpecializationInfo *SpecInfo =
1435         FD->getTemplateSpecializationInfo();
1436     if (!SpecInfo) {
1437       return CXGetTemplateArgumentStatus_NullTemplSpecInfo;
1438     }
1439 
1440     if (I >= SpecInfo->TemplateArguments->size()) {
1441       return CXGetTemplateArgumentStatus_InvalidIndex;
1442     }
1443 
1444     *TA = SpecInfo->TemplateArguments->get(I);
1445     return 0;
1446   }
1447 
1448   if (const auto *SD =
1449           llvm::dyn_cast_if_present<clang::ClassTemplateSpecializationDecl>(
1450               getCursorDecl(C))) {
1451     if (I >= SD->getTemplateArgs().size()) {
1452       return CXGetTemplateArgumentStatus_InvalidIndex;
1453     }
1454 
1455     *TA = SD->getTemplateArgs()[I];
1456     return 0;
1457   }
1458 
1459   return CXGetTemplateArgumentStatus_BadDeclCast;
1460 }
1461 
1462 enum CXTemplateArgumentKind clang_Cursor_getTemplateArgumentKind(CXCursor C,
1463                                                                  unsigned I) {
1464   TemplateArgument TA;
1465   if (clang_Cursor_getTemplateArgument(C, I, &TA)) {
1466     return CXTemplateArgumentKind_Invalid;
1467   }
1468 
1469   switch (TA.getKind()) {
1470   case TemplateArgument::Null:
1471     return CXTemplateArgumentKind_Null;
1472   case TemplateArgument::Type:
1473     return CXTemplateArgumentKind_Type;
1474   case TemplateArgument::Declaration:
1475     return CXTemplateArgumentKind_Declaration;
1476   case TemplateArgument::NullPtr:
1477     return CXTemplateArgumentKind_NullPtr;
1478   case TemplateArgument::Integral:
1479     return CXTemplateArgumentKind_Integral;
1480   case TemplateArgument::StructuralValue:
1481     // FIXME: Expose these values.
1482     return CXTemplateArgumentKind_Invalid;
1483   case TemplateArgument::Template:
1484     return CXTemplateArgumentKind_Template;
1485   case TemplateArgument::TemplateExpansion:
1486     return CXTemplateArgumentKind_TemplateExpansion;
1487   case TemplateArgument::Expression:
1488     return CXTemplateArgumentKind_Expression;
1489   case TemplateArgument::Pack:
1490     return CXTemplateArgumentKind_Pack;
1491   }
1492 
1493   return CXTemplateArgumentKind_Invalid;
1494 }
1495 
1496 CXType clang_Cursor_getTemplateArgumentType(CXCursor C, unsigned I) {
1497   TemplateArgument TA;
1498   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1499       CXGetTemplateArgumentStatus_Success) {
1500     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1501   }
1502 
1503   if (TA.getKind() != TemplateArgument::Type) {
1504     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1505   }
1506 
1507   return cxtype::MakeCXType(TA.getAsType(), getCursorTU(C));
1508 }
1509 
1510 long long clang_Cursor_getTemplateArgumentValue(CXCursor C, unsigned I) {
1511   TemplateArgument TA;
1512   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1513       CXGetTemplateArgumentStatus_Success) {
1514     assert(0 && "Unable to retrieve TemplateArgument");
1515     return 0;
1516   }
1517 
1518   if (TA.getKind() != TemplateArgument::Integral) {
1519     assert(0 && "Passed template argument is not Integral");
1520     return 0;
1521   }
1522 
1523   return TA.getAsIntegral().getSExtValue();
1524 }
1525 
1526 unsigned long long clang_Cursor_getTemplateArgumentUnsignedValue(CXCursor C,
1527                                                                  unsigned I) {
1528   TemplateArgument TA;
1529   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1530       CXGetTemplateArgumentStatus_Success) {
1531     assert(0 && "Unable to retrieve TemplateArgument");
1532     return 0;
1533   }
1534 
1535   if (TA.getKind() != TemplateArgument::Integral) {
1536     assert(0 && "Passed template argument is not Integral");
1537     return 0;
1538   }
1539 
1540   return TA.getAsIntegral().getZExtValue();
1541 }
1542 
1543 //===----------------------------------------------------------------------===//
1544 // CXCursorSet.
1545 //===----------------------------------------------------------------------===//
1546 
1547 typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
1548 
1549 static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
1550   return (CXCursorSet)setImpl;
1551 }
1552 static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
1553   return (CXCursorSet_Impl *)set;
1554 }
1555 namespace llvm {
1556 template <> struct DenseMapInfo<CXCursor> {
1557 public:
1558   static inline CXCursor getEmptyKey() {
1559     return MakeCXCursorInvalid(CXCursor_InvalidFile);
1560   }
1561   static inline CXCursor getTombstoneKey() {
1562     return MakeCXCursorInvalid(CXCursor_NoDeclFound);
1563   }
1564   static inline unsigned getHashValue(const CXCursor &cursor) {
1565     return llvm::DenseMapInfo<std::pair<const void *, const void *>>::
1566         getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
1567   }
1568   static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
1569     return x.kind == y.kind && x.data[0] == y.data[0] && x.data[1] == y.data[1];
1570   }
1571 };
1572 } // namespace llvm
1573 
1574 CXCursorSet clang_createCXCursorSet() {
1575   return packCXCursorSet(new CXCursorSet_Impl());
1576 }
1577 
1578 void clang_disposeCXCursorSet(CXCursorSet set) {
1579   delete unpackCXCursorSet(set);
1580 }
1581 
1582 unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
1583   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1584   if (!setImpl)
1585     return 0;
1586   return setImpl->find(cursor) != setImpl->end();
1587 }
1588 
1589 unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
1590   // Do not insert invalid cursors into the set.
1591   if (cursor.kind >= CXCursor_FirstInvalid &&
1592       cursor.kind <= CXCursor_LastInvalid)
1593     return 1;
1594 
1595   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1596   if (!setImpl)
1597     return 1;
1598   unsigned &entry = (*setImpl)[cursor];
1599   unsigned flag = entry == 0 ? 1 : 0;
1600   entry = 1;
1601   return flag;
1602 }
1603 
1604 CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
1605   enum CXCursorKind kind = clang_getCursorKind(cursor);
1606   if (clang_isDeclaration(kind)) {
1607     const Decl *decl = getCursorDecl(cursor);
1608     if (const NamedDecl *namedDecl = dyn_cast_or_null<NamedDecl>(decl)) {
1609       ASTUnit *unit = getCursorASTUnit(cursor);
1610       CodeCompletionResult Result(namedDecl, CCP_Declaration);
1611       CodeCompletionString *String = Result.CreateCodeCompletionString(
1612           unit->getASTContext(), unit->getPreprocessor(),
1613           CodeCompletionContext::CCC_Other,
1614           unit->getCodeCompletionTUInfo().getAllocator(),
1615           unit->getCodeCompletionTUInfo(), true);
1616       return String;
1617     }
1618   } else if (kind == CXCursor_MacroDefinition) {
1619     const MacroDefinitionRecord *definition = getCursorMacroDefinition(cursor);
1620     const IdentifierInfo *Macro = definition->getName();
1621     ASTUnit *unit = getCursorASTUnit(cursor);
1622     CodeCompletionResult Result(
1623         Macro,
1624         unit->getPreprocessor().getMacroDefinition(Macro).getMacroInfo());
1625     CodeCompletionString *String = Result.CreateCodeCompletionString(
1626         unit->getASTContext(), unit->getPreprocessor(),
1627         CodeCompletionContext::CCC_Other,
1628         unit->getCodeCompletionTUInfo().getAllocator(),
1629         unit->getCodeCompletionTUInfo(), false);
1630     return String;
1631   }
1632   return nullptr;
1633 }
1634 
1635 namespace {
1636 struct OverridenCursorsPool {
1637   typedef SmallVector<CXCursor, 2> CursorVec;
1638   std::vector<CursorVec *> AllCursors;
1639   std::vector<CursorVec *> AvailableCursors;
1640 
1641   ~OverridenCursorsPool() {
1642     for (std::vector<CursorVec *>::iterator I = AllCursors.begin(),
1643                                             E = AllCursors.end();
1644          I != E; ++I) {
1645       delete *I;
1646     }
1647   }
1648 };
1649 } // namespace
1650 
1651 void *cxcursor::createOverridenCXCursorsPool() {
1652   return new OverridenCursorsPool();
1653 }
1654 
1655 void cxcursor::disposeOverridenCXCursorsPool(void *pool) {
1656   delete static_cast<OverridenCursorsPool *>(pool);
1657 }
1658 
1659 void clang_getOverriddenCursors(CXCursor cursor, CXCursor **overridden,
1660                                 unsigned *num_overridden) {
1661   if (overridden)
1662     *overridden = nullptr;
1663   if (num_overridden)
1664     *num_overridden = 0;
1665 
1666   CXTranslationUnit TU = cxcursor::getCursorTU(cursor);
1667 
1668   if (!overridden || !num_overridden || !TU)
1669     return;
1670 
1671   if (!clang_isDeclaration(cursor.kind))
1672     return;
1673 
1674   OverridenCursorsPool &pool =
1675       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1676 
1677   OverridenCursorsPool::CursorVec *Vec = nullptr;
1678 
1679   if (!pool.AvailableCursors.empty()) {
1680     Vec = pool.AvailableCursors.back();
1681     pool.AvailableCursors.pop_back();
1682   } else {
1683     Vec = new OverridenCursorsPool::CursorVec();
1684     pool.AllCursors.push_back(Vec);
1685   }
1686 
1687   // Clear out the vector, but don't free the memory contents.  This
1688   // reduces malloc() traffic.
1689   Vec->clear();
1690 
1691   // Use the first entry to contain a back reference to the vector.
1692   // This is a complete hack.
1693   CXCursor backRefCursor = MakeCXCursorInvalid(CXCursor_InvalidFile, TU);
1694   backRefCursor.data[0] = Vec;
1695   assert(cxcursor::getCursorTU(backRefCursor) == TU);
1696   Vec->push_back(backRefCursor);
1697 
1698   // Get the overridden cursors.
1699   cxcursor::getOverriddenCursors(cursor, *Vec);
1700 
1701   // Did we get any overridden cursors?  If not, return Vec to the pool
1702   // of available cursor vectors.
1703   if (Vec->size() == 1) {
1704     pool.AvailableCursors.push_back(Vec);
1705     return;
1706   }
1707 
1708   // Now tell the caller about the overridden cursors.
1709   assert(Vec->size() > 1);
1710   *overridden = &((*Vec)[1]);
1711   *num_overridden = Vec->size() - 1;
1712 }
1713 
1714 void clang_disposeOverriddenCursors(CXCursor *overridden) {
1715   if (!overridden)
1716     return;
1717 
1718   // Use pointer arithmetic to get back the first faux entry
1719   // which has a back-reference to the TU and the vector.
1720   --overridden;
1721   OverridenCursorsPool::CursorVec *Vec =
1722       static_cast<OverridenCursorsPool::CursorVec *>(
1723           const_cast<void *>(overridden->data[0]));
1724   CXTranslationUnit TU = getCursorTU(*overridden);
1725 
1726   assert(Vec && TU);
1727 
1728   OverridenCursorsPool &pool =
1729       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1730 
1731   pool.AvailableCursors.push_back(Vec);
1732 }
1733 
1734 int clang_Cursor_isDynamicCall(CXCursor C) {
1735   const Expr *E = nullptr;
1736   if (clang_isExpression(C.kind))
1737     E = getCursorExpr(C);
1738   if (!E)
1739     return 0;
1740 
1741   if (const ObjCMessageExpr *MsgE = dyn_cast<ObjCMessageExpr>(E)) {
1742     if (MsgE->getReceiverKind() != ObjCMessageExpr::Instance)
1743       return false;
1744     if (auto *RecE = dyn_cast<ObjCMessageExpr>(
1745             MsgE->getInstanceReceiver()->IgnoreParenCasts())) {
1746       if (RecE->getMethodFamily() == OMF_alloc)
1747         return false;
1748     }
1749     return true;
1750   }
1751 
1752   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1753     return !PropRefE->isSuperReceiver();
1754   }
1755 
1756   const MemberExpr *ME = nullptr;
1757   if (isa<MemberExpr>(E))
1758     ME = cast<MemberExpr>(E);
1759   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1760     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1761 
1762   if (ME) {
1763     if (const CXXMethodDecl *MD =
1764             dyn_cast_or_null<CXXMethodDecl>(ME->getMemberDecl()))
1765       return MD->isVirtual() &&
1766              ME->performsVirtualDispatch(
1767                  cxcursor::getCursorContext(C).getLangOpts());
1768   }
1769 
1770   return 0;
1771 }
1772 
1773 CXType clang_Cursor_getReceiverType(CXCursor C) {
1774   CXTranslationUnit TU = cxcursor::getCursorTU(C);
1775   const Expr *E = nullptr;
1776   if (clang_isExpression(C.kind))
1777     E = getCursorExpr(C);
1778 
1779   if (const ObjCMessageExpr *MsgE = dyn_cast_or_null<ObjCMessageExpr>(E))
1780     return cxtype::MakeCXType(MsgE->getReceiverType(), TU);
1781 
1782   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1783     return cxtype::MakeCXType(
1784         PropRefE->getReceiverType(cxcursor::getCursorContext(C)), TU);
1785   }
1786 
1787   const MemberExpr *ME = nullptr;
1788   if (isa<MemberExpr>(E))
1789     ME = cast<MemberExpr>(E);
1790   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1791     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1792 
1793   if (ME) {
1794     if (isa_and_nonnull<CXXMethodDecl>(ME->getMemberDecl())) {
1795       auto receiverTy = ME->getBase()->IgnoreImpCasts()->getType();
1796       return cxtype::MakeCXType(receiverTy, TU);
1797     }
1798   }
1799 
1800   return cxtype::MakeCXType(QualType(), TU);
1801 }
1802