xref: /llvm-project/clang/tools/libclang/CXCursor.cpp (revision abc8812df02599fc413d9ed77b992f8236ed2af9)
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   case Stmt::HLSLOutArgExprClass:
340   case Stmt::OpenACCAsteriskSizeExprClass:
341   case Stmt::ResolvedUnexpandedPackExprClass:
342     K = CXCursor_UnexposedExpr;
343     break;
344 
345   case Stmt::OpaqueValueExprClass:
346     if (Expr *Src = cast<OpaqueValueExpr>(S)->getSourceExpr())
347       return MakeCXCursor(Src, Parent, TU, RegionOfInterest);
348     K = CXCursor_UnexposedExpr;
349     break;
350 
351   case Stmt::PseudoObjectExprClass:
352     return MakeCXCursor(cast<PseudoObjectExpr>(S)->getSyntacticForm(), Parent,
353                         TU, RegionOfInterest);
354 
355   case Stmt::CompoundStmtClass:
356     K = CXCursor_CompoundStmt;
357     break;
358 
359   case Stmt::NullStmtClass:
360     K = CXCursor_NullStmt;
361     break;
362 
363   case Stmt::LabelStmtClass:
364     K = CXCursor_LabelStmt;
365     break;
366 
367   case Stmt::AttributedStmtClass:
368     K = CXCursor_UnexposedStmt;
369     break;
370 
371   case Stmt::DeclStmtClass:
372     K = CXCursor_DeclStmt;
373     break;
374 
375   case Stmt::CapturedStmtClass:
376     K = CXCursor_UnexposedStmt;
377     break;
378 
379   case Stmt::SYCLKernelCallStmtClass:
380     K = CXCursor_UnexposedStmt;
381     break;
382 
383   case Stmt::IntegerLiteralClass:
384     K = CXCursor_IntegerLiteral;
385     break;
386 
387   case Stmt::FixedPointLiteralClass:
388     K = CXCursor_FixedPointLiteral;
389     break;
390 
391   case Stmt::FloatingLiteralClass:
392     K = CXCursor_FloatingLiteral;
393     break;
394 
395   case Stmt::ImaginaryLiteralClass:
396     K = CXCursor_ImaginaryLiteral;
397     break;
398 
399   case Stmt::StringLiteralClass:
400     K = CXCursor_StringLiteral;
401     break;
402 
403   case Stmt::CharacterLiteralClass:
404     K = CXCursor_CharacterLiteral;
405     break;
406 
407   case Stmt::ConstantExprClass:
408     return MakeCXCursor(cast<ConstantExpr>(S)->getSubExpr(), Parent, TU,
409                         RegionOfInterest);
410 
411   case Stmt::ParenExprClass:
412     K = CXCursor_ParenExpr;
413     break;
414 
415   case Stmt::UnaryOperatorClass:
416     K = CXCursor_UnaryOperator;
417     break;
418 
419   case Stmt::UnaryExprOrTypeTraitExprClass:
420   case Stmt::CXXNoexceptExprClass:
421     K = CXCursor_UnaryExpr;
422     break;
423 
424   case Stmt::MSPropertySubscriptExprClass:
425   case Stmt::ArraySubscriptExprClass:
426     K = CXCursor_ArraySubscriptExpr;
427     break;
428 
429   case Stmt::MatrixSubscriptExprClass:
430     // TODO: add support for MatrixSubscriptExpr.
431     K = CXCursor_UnexposedExpr;
432     break;
433 
434   case Stmt::ArraySectionExprClass:
435     K = CXCursor_ArraySectionExpr;
436     break;
437 
438   case Stmt::OMPArrayShapingExprClass:
439     K = CXCursor_OMPArrayShapingExpr;
440     break;
441 
442   case Stmt::OMPIteratorExprClass:
443     K = CXCursor_OMPIteratorExpr;
444     break;
445 
446   case Stmt::BinaryOperatorClass:
447     K = CXCursor_BinaryOperator;
448     break;
449 
450   case Stmt::CompoundAssignOperatorClass:
451     K = CXCursor_CompoundAssignOperator;
452     break;
453 
454   case Stmt::ConditionalOperatorClass:
455     K = CXCursor_ConditionalOperator;
456     break;
457 
458   case Stmt::CStyleCastExprClass:
459     K = CXCursor_CStyleCastExpr;
460     break;
461 
462   case Stmt::CompoundLiteralExprClass:
463     K = CXCursor_CompoundLiteralExpr;
464     break;
465 
466   case Stmt::InitListExprClass:
467     K = CXCursor_InitListExpr;
468     break;
469 
470   case Stmt::AddrLabelExprClass:
471     K = CXCursor_AddrLabelExpr;
472     break;
473 
474   case Stmt::StmtExprClass:
475     K = CXCursor_StmtExpr;
476     break;
477 
478   case Stmt::GenericSelectionExprClass:
479     K = CXCursor_GenericSelectionExpr;
480     break;
481 
482   case Stmt::GNUNullExprClass:
483     K = CXCursor_GNUNullExpr;
484     break;
485 
486   case Stmt::CXXStaticCastExprClass:
487     K = CXCursor_CXXStaticCastExpr;
488     break;
489 
490   case Stmt::CXXDynamicCastExprClass:
491     K = CXCursor_CXXDynamicCastExpr;
492     break;
493 
494   case Stmt::CXXReinterpretCastExprClass:
495     K = CXCursor_CXXReinterpretCastExpr;
496     break;
497 
498   case Stmt::CXXConstCastExprClass:
499     K = CXCursor_CXXConstCastExpr;
500     break;
501 
502   case Stmt::CXXFunctionalCastExprClass:
503     K = CXCursor_CXXFunctionalCastExpr;
504     break;
505 
506   case Stmt::CXXAddrspaceCastExprClass:
507     K = CXCursor_CXXAddrspaceCastExpr;
508     break;
509 
510   case Stmt::CXXTypeidExprClass:
511     K = CXCursor_CXXTypeidExpr;
512     break;
513 
514   case Stmt::CXXBoolLiteralExprClass:
515     K = CXCursor_CXXBoolLiteralExpr;
516     break;
517 
518   case Stmt::CXXNullPtrLiteralExprClass:
519     K = CXCursor_CXXNullPtrLiteralExpr;
520     break;
521 
522   case Stmt::CXXThisExprClass:
523     K = CXCursor_CXXThisExpr;
524     break;
525 
526   case Stmt::CXXThrowExprClass:
527     K = CXCursor_CXXThrowExpr;
528     break;
529 
530   case Stmt::CXXNewExprClass:
531     K = CXCursor_CXXNewExpr;
532     break;
533 
534   case Stmt::CXXDeleteExprClass:
535     K = CXCursor_CXXDeleteExpr;
536     break;
537 
538   case Stmt::ObjCStringLiteralClass:
539     K = CXCursor_ObjCStringLiteral;
540     break;
541 
542   case Stmt::ObjCEncodeExprClass:
543     K = CXCursor_ObjCEncodeExpr;
544     break;
545 
546   case Stmt::ObjCSelectorExprClass:
547     K = CXCursor_ObjCSelectorExpr;
548     break;
549 
550   case Stmt::ObjCProtocolExprClass:
551     K = CXCursor_ObjCProtocolExpr;
552     break;
553 
554   case Stmt::ObjCBoolLiteralExprClass:
555     K = CXCursor_ObjCBoolLiteralExpr;
556     break;
557 
558   case Stmt::ObjCAvailabilityCheckExprClass:
559     K = CXCursor_ObjCAvailabilityCheckExpr;
560     break;
561 
562   case Stmt::ObjCBridgedCastExprClass:
563     K = CXCursor_ObjCBridgedCastExpr;
564     break;
565 
566   case Stmt::BlockExprClass:
567     K = CXCursor_BlockExpr;
568     break;
569 
570   case Stmt::PackExpansionExprClass:
571     K = CXCursor_PackExpansionExpr;
572     break;
573 
574   case Stmt::SizeOfPackExprClass:
575     K = CXCursor_SizeOfPackExpr;
576     break;
577 
578   case Stmt::PackIndexingExprClass:
579     K = CXCursor_PackIndexingExpr;
580     break;
581 
582   case Stmt::DeclRefExprClass:
583     if (const ImplicitParamDecl *IPD = dyn_cast_or_null<ImplicitParamDecl>(
584             cast<DeclRefExpr>(S)->getDecl())) {
585       if (const ObjCMethodDecl *MD =
586               dyn_cast<ObjCMethodDecl>(IPD->getDeclContext())) {
587         if (MD->getSelfDecl() == IPD) {
588           K = CXCursor_ObjCSelfExpr;
589           break;
590         }
591       }
592     }
593 
594     K = CXCursor_DeclRefExpr;
595     break;
596 
597   case Stmt::DependentScopeDeclRefExprClass:
598   case Stmt::SubstNonTypeTemplateParmExprClass:
599   case Stmt::SubstNonTypeTemplateParmPackExprClass:
600   case Stmt::FunctionParmPackExprClass:
601   case Stmt::UnresolvedLookupExprClass:
602   case Stmt::TypoExprClass: // A typo could actually be a DeclRef or a MemberRef
603     K = CXCursor_DeclRefExpr;
604     break;
605 
606   case Stmt::CXXDependentScopeMemberExprClass:
607   case Stmt::CXXPseudoDestructorExprClass:
608   case Stmt::MemberExprClass:
609   case Stmt::MSPropertyRefExprClass:
610   case Stmt::ObjCIsaExprClass:
611   case Stmt::ObjCIvarRefExprClass:
612   case Stmt::ObjCPropertyRefExprClass:
613   case Stmt::UnresolvedMemberExprClass:
614     K = CXCursor_MemberRefExpr;
615     break;
616 
617   case Stmt::CallExprClass:
618   case Stmt::CXXOperatorCallExprClass:
619   case Stmt::CXXMemberCallExprClass:
620   case Stmt::CUDAKernelCallExprClass:
621   case Stmt::CXXConstructExprClass:
622   case Stmt::CXXInheritedCtorInitExprClass:
623   case Stmt::CXXTemporaryObjectExprClass:
624   case Stmt::CXXUnresolvedConstructExprClass:
625   case Stmt::UserDefinedLiteralClass:
626     K = CXCursor_CallExpr;
627     break;
628 
629   case Stmt::LambdaExprClass:
630     K = CXCursor_LambdaExpr;
631     break;
632 
633   case Stmt::ObjCMessageExprClass: {
634     K = CXCursor_ObjCMessageExpr;
635     int SelectorIdIndex = -1;
636     // Check if cursor points to a selector id.
637     if (RegionOfInterest.isValid() &&
638         RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
639       SmallVector<SourceLocation, 16> SelLocs;
640       cast<ObjCMessageExpr>(S)->getSelectorLocs(SelLocs);
641       SmallVectorImpl<SourceLocation>::iterator I =
642           llvm::find(SelLocs, RegionOfInterest.getBegin());
643       if (I != SelLocs.end())
644         SelectorIdIndex = I - SelLocs.begin();
645     }
646     CXCursor C = {K, 0, {Parent, S, TU}};
647     return getSelectorIdentifierCursor(SelectorIdIndex, C);
648   }
649 
650   case Stmt::ConceptSpecializationExprClass:
651     K = CXCursor_ConceptSpecializationExpr;
652     break;
653 
654   case Stmt::RequiresExprClass:
655     K = CXCursor_RequiresExpr;
656     break;
657 
658   case Stmt::CXXParenListInitExprClass:
659     K = CXCursor_CXXParenListInitExpr;
660     break;
661 
662   case Stmt::MSDependentExistsStmtClass:
663     K = CXCursor_UnexposedStmt;
664     break;
665   case Stmt::OMPCanonicalLoopClass:
666     K = CXCursor_OMPCanonicalLoop;
667     break;
668   case Stmt::OMPMetaDirectiveClass:
669     K = CXCursor_OMPMetaDirective;
670     break;
671   case Stmt::OMPParallelDirectiveClass:
672     K = CXCursor_OMPParallelDirective;
673     break;
674   case Stmt::OMPSimdDirectiveClass:
675     K = CXCursor_OMPSimdDirective;
676     break;
677   case Stmt::OMPTileDirectiveClass:
678     K = CXCursor_OMPTileDirective;
679     break;
680   case Stmt::OMPUnrollDirectiveClass:
681     K = CXCursor_OMPUnrollDirective;
682     break;
683   case Stmt::OMPReverseDirectiveClass:
684     K = CXCursor_OMPReverseDirective;
685     break;
686   case Stmt::OMPInterchangeDirectiveClass:
687     K = CXCursor_OMPTileDirective;
688     break;
689   case Stmt::OMPForDirectiveClass:
690     K = CXCursor_OMPForDirective;
691     break;
692   case Stmt::OMPForSimdDirectiveClass:
693     K = CXCursor_OMPForSimdDirective;
694     break;
695   case Stmt::OMPSectionsDirectiveClass:
696     K = CXCursor_OMPSectionsDirective;
697     break;
698   case Stmt::OMPSectionDirectiveClass:
699     K = CXCursor_OMPSectionDirective;
700     break;
701   case Stmt::OMPScopeDirectiveClass:
702     K = CXCursor_OMPScopeDirective;
703     break;
704   case Stmt::OMPSingleDirectiveClass:
705     K = CXCursor_OMPSingleDirective;
706     break;
707   case Stmt::OMPMasterDirectiveClass:
708     K = CXCursor_OMPMasterDirective;
709     break;
710   case Stmt::OMPCriticalDirectiveClass:
711     K = CXCursor_OMPCriticalDirective;
712     break;
713   case Stmt::OMPParallelForDirectiveClass:
714     K = CXCursor_OMPParallelForDirective;
715     break;
716   case Stmt::OMPParallelForSimdDirectiveClass:
717     K = CXCursor_OMPParallelForSimdDirective;
718     break;
719   case Stmt::OMPParallelMasterDirectiveClass:
720     K = CXCursor_OMPParallelMasterDirective;
721     break;
722   case Stmt::OMPParallelMaskedDirectiveClass:
723     K = CXCursor_OMPParallelMaskedDirective;
724     break;
725   case Stmt::OMPParallelSectionsDirectiveClass:
726     K = CXCursor_OMPParallelSectionsDirective;
727     break;
728   case Stmt::OMPTaskDirectiveClass:
729     K = CXCursor_OMPTaskDirective;
730     break;
731   case Stmt::OMPTaskyieldDirectiveClass:
732     K = CXCursor_OMPTaskyieldDirective;
733     break;
734   case Stmt::OMPBarrierDirectiveClass:
735     K = CXCursor_OMPBarrierDirective;
736     break;
737   case Stmt::OMPTaskwaitDirectiveClass:
738     K = CXCursor_OMPTaskwaitDirective;
739     break;
740   case Stmt::OMPErrorDirectiveClass:
741     K = CXCursor_OMPErrorDirective;
742     break;
743   case Stmt::OMPTaskgroupDirectiveClass:
744     K = CXCursor_OMPTaskgroupDirective;
745     break;
746   case Stmt::OMPFlushDirectiveClass:
747     K = CXCursor_OMPFlushDirective;
748     break;
749   case Stmt::OMPDepobjDirectiveClass:
750     K = CXCursor_OMPDepobjDirective;
751     break;
752   case Stmt::OMPScanDirectiveClass:
753     K = CXCursor_OMPScanDirective;
754     break;
755   case Stmt::OMPOrderedDirectiveClass:
756     K = CXCursor_OMPOrderedDirective;
757     break;
758   case Stmt::OMPAtomicDirectiveClass:
759     K = CXCursor_OMPAtomicDirective;
760     break;
761   case Stmt::OMPTargetDirectiveClass:
762     K = CXCursor_OMPTargetDirective;
763     break;
764   case Stmt::OMPTargetDataDirectiveClass:
765     K = CXCursor_OMPTargetDataDirective;
766     break;
767   case Stmt::OMPTargetEnterDataDirectiveClass:
768     K = CXCursor_OMPTargetEnterDataDirective;
769     break;
770   case Stmt::OMPTargetExitDataDirectiveClass:
771     K = CXCursor_OMPTargetExitDataDirective;
772     break;
773   case Stmt::OMPTargetParallelDirectiveClass:
774     K = CXCursor_OMPTargetParallelDirective;
775     break;
776   case Stmt::OMPTargetParallelForDirectiveClass:
777     K = CXCursor_OMPTargetParallelForDirective;
778     break;
779   case Stmt::OMPTargetUpdateDirectiveClass:
780     K = CXCursor_OMPTargetUpdateDirective;
781     break;
782   case Stmt::OMPTeamsDirectiveClass:
783     K = CXCursor_OMPTeamsDirective;
784     break;
785   case Stmt::OMPCancellationPointDirectiveClass:
786     K = CXCursor_OMPCancellationPointDirective;
787     break;
788   case Stmt::OMPCancelDirectiveClass:
789     K = CXCursor_OMPCancelDirective;
790     break;
791   case Stmt::OMPTaskLoopDirectiveClass:
792     K = CXCursor_OMPTaskLoopDirective;
793     break;
794   case Stmt::OMPTaskLoopSimdDirectiveClass:
795     K = CXCursor_OMPTaskLoopSimdDirective;
796     break;
797   case Stmt::OMPMasterTaskLoopDirectiveClass:
798     K = CXCursor_OMPMasterTaskLoopDirective;
799     break;
800   case Stmt::OMPMaskedTaskLoopDirectiveClass:
801     K = CXCursor_OMPMaskedTaskLoopDirective;
802     break;
803   case Stmt::OMPMasterTaskLoopSimdDirectiveClass:
804     K = CXCursor_OMPMasterTaskLoopSimdDirective;
805     break;
806   case Stmt::OMPMaskedTaskLoopSimdDirectiveClass:
807     K = CXCursor_OMPMaskedTaskLoopSimdDirective;
808     break;
809   case Stmt::OMPParallelMasterTaskLoopDirectiveClass:
810     K = CXCursor_OMPParallelMasterTaskLoopDirective;
811     break;
812   case Stmt::OMPParallelMaskedTaskLoopDirectiveClass:
813     K = CXCursor_OMPParallelMaskedTaskLoopDirective;
814     break;
815   case Stmt::OMPParallelMasterTaskLoopSimdDirectiveClass:
816     K = CXCursor_OMPParallelMasterTaskLoopSimdDirective;
817     break;
818   case Stmt::OMPParallelMaskedTaskLoopSimdDirectiveClass:
819     K = CXCursor_OMPParallelMaskedTaskLoopSimdDirective;
820     break;
821   case Stmt::OMPDistributeDirectiveClass:
822     K = CXCursor_OMPDistributeDirective;
823     break;
824   case Stmt::OMPDistributeParallelForDirectiveClass:
825     K = CXCursor_OMPDistributeParallelForDirective;
826     break;
827   case Stmt::OMPDistributeParallelForSimdDirectiveClass:
828     K = CXCursor_OMPDistributeParallelForSimdDirective;
829     break;
830   case Stmt::OMPDistributeSimdDirectiveClass:
831     K = CXCursor_OMPDistributeSimdDirective;
832     break;
833   case Stmt::OMPTargetParallelForSimdDirectiveClass:
834     K = CXCursor_OMPTargetParallelForSimdDirective;
835     break;
836   case Stmt::OMPTargetSimdDirectiveClass:
837     K = CXCursor_OMPTargetSimdDirective;
838     break;
839   case Stmt::OMPTeamsDistributeDirectiveClass:
840     K = CXCursor_OMPTeamsDistributeDirective;
841     break;
842   case Stmt::OMPTeamsDistributeSimdDirectiveClass:
843     K = CXCursor_OMPTeamsDistributeSimdDirective;
844     break;
845   case Stmt::OMPTeamsDistributeParallelForSimdDirectiveClass:
846     K = CXCursor_OMPTeamsDistributeParallelForSimdDirective;
847     break;
848   case Stmt::OMPTeamsDistributeParallelForDirectiveClass:
849     K = CXCursor_OMPTeamsDistributeParallelForDirective;
850     break;
851   case Stmt::OMPTargetTeamsDirectiveClass:
852     K = CXCursor_OMPTargetTeamsDirective;
853     break;
854   case Stmt::OMPTargetTeamsDistributeDirectiveClass:
855     K = CXCursor_OMPTargetTeamsDistributeDirective;
856     break;
857   case Stmt::OMPTargetTeamsDistributeParallelForDirectiveClass:
858     K = CXCursor_OMPTargetTeamsDistributeParallelForDirective;
859     break;
860   case Stmt::OMPTargetTeamsDistributeParallelForSimdDirectiveClass:
861     K = CXCursor_OMPTargetTeamsDistributeParallelForSimdDirective;
862     break;
863   case Stmt::OMPTargetTeamsDistributeSimdDirectiveClass:
864     K = CXCursor_OMPTargetTeamsDistributeSimdDirective;
865     break;
866   case Stmt::OMPInteropDirectiveClass:
867     K = CXCursor_OMPInteropDirective;
868     break;
869   case Stmt::OMPDispatchDirectiveClass:
870     K = CXCursor_OMPDispatchDirective;
871     break;
872   case Stmt::OMPMaskedDirectiveClass:
873     K = CXCursor_OMPMaskedDirective;
874     break;
875   case Stmt::OMPGenericLoopDirectiveClass:
876     K = CXCursor_OMPGenericLoopDirective;
877     break;
878   case Stmt::OMPTeamsGenericLoopDirectiveClass:
879     K = CXCursor_OMPTeamsGenericLoopDirective;
880     break;
881   case Stmt::OMPTargetTeamsGenericLoopDirectiveClass:
882     K = CXCursor_OMPTargetTeamsGenericLoopDirective;
883     break;
884   case Stmt::OMPParallelGenericLoopDirectiveClass:
885     K = CXCursor_OMPParallelGenericLoopDirective;
886     break;
887   case Stmt::OpenACCComputeConstructClass:
888     K = CXCursor_OpenACCComputeConstruct;
889     break;
890   case Stmt::OpenACCLoopConstructClass:
891     K = CXCursor_OpenACCLoopConstruct;
892     break;
893   case Stmt::OpenACCCombinedConstructClass:
894     K = CXCursor_OpenACCCombinedConstruct;
895     break;
896   case Stmt::OpenACCDataConstructClass:
897     K = CXCursor_OpenACCDataConstruct;
898     break;
899   case Stmt::OpenACCEnterDataConstructClass:
900     K = CXCursor_OpenACCEnterDataConstruct;
901     break;
902   case Stmt::OpenACCExitDataConstructClass:
903     K = CXCursor_OpenACCExitDataConstruct;
904     break;
905   case Stmt::OpenACCHostDataConstructClass:
906     K = CXCursor_OpenACCHostDataConstruct;
907     break;
908   case Stmt::OpenACCWaitConstructClass:
909     K = CXCursor_OpenACCWaitConstruct;
910     break;
911   case Stmt::OpenACCInitConstructClass:
912     K = CXCursor_OpenACCInitConstruct;
913     break;
914   case Stmt::OpenACCShutdownConstructClass:
915     K = CXCursor_OpenACCShutdownConstruct;
916     break;
917   case Stmt::OpenACCSetConstructClass:
918     K = CXCursor_OpenACCSetConstruct;
919     break;
920   case Stmt::OpenACCUpdateConstructClass:
921     K = CXCursor_OpenACCUpdateConstruct;
922     break;
923   case Stmt::OMPTargetParallelGenericLoopDirectiveClass:
924     K = CXCursor_OMPTargetParallelGenericLoopDirective;
925     break;
926   case Stmt::BuiltinBitCastExprClass:
927     K = CXCursor_BuiltinBitCastExpr;
928     break;
929   case Stmt::OMPAssumeDirectiveClass:
930     K = CXCursor_OMPAssumeDirective;
931     break;
932   }
933 
934   CXCursor C = {K, 0, {Parent, S, TU}};
935   return C;
936 }
937 
938 CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
939                                                SourceLocation Loc,
940                                                CXTranslationUnit TU) {
941   assert(Super && TU && "Invalid arguments!");
942   void *RawLoc = Loc.getPtrEncoding();
943   CXCursor C = {CXCursor_ObjCSuperClassRef, 0, {Super, RawLoc, TU}};
944   return C;
945 }
946 
947 std::pair<const ObjCInterfaceDecl *, SourceLocation>
948 cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
949   assert(C.kind == CXCursor_ObjCSuperClassRef);
950   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
951                         SourceLocation::getFromPtrEncoding(C.data[1]));
952 }
953 
954 CXCursor cxcursor::MakeCursorObjCProtocolRef(const ObjCProtocolDecl *Proto,
955                                              SourceLocation Loc,
956                                              CXTranslationUnit TU) {
957   assert(Proto && TU && "Invalid arguments!");
958   void *RawLoc = Loc.getPtrEncoding();
959   CXCursor C = {CXCursor_ObjCProtocolRef, 0, {Proto, RawLoc, TU}};
960   return C;
961 }
962 
963 std::pair<const ObjCProtocolDecl *, SourceLocation>
964 cxcursor::getCursorObjCProtocolRef(CXCursor C) {
965   assert(C.kind == CXCursor_ObjCProtocolRef);
966   return std::make_pair(static_cast<const ObjCProtocolDecl *>(C.data[0]),
967                         SourceLocation::getFromPtrEncoding(C.data[1]));
968 }
969 
970 CXCursor cxcursor::MakeCursorObjCClassRef(const ObjCInterfaceDecl *Class,
971                                           SourceLocation Loc,
972                                           CXTranslationUnit TU) {
973   // 'Class' can be null for invalid code.
974   if (!Class)
975     return MakeCXCursorInvalid(CXCursor_InvalidCode);
976   assert(TU && "Invalid arguments!");
977   void *RawLoc = Loc.getPtrEncoding();
978   CXCursor C = {CXCursor_ObjCClassRef, 0, {Class, RawLoc, TU}};
979   return C;
980 }
981 
982 std::pair<const ObjCInterfaceDecl *, SourceLocation>
983 cxcursor::getCursorObjCClassRef(CXCursor C) {
984   assert(C.kind == CXCursor_ObjCClassRef);
985   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
986                         SourceLocation::getFromPtrEncoding(C.data[1]));
987 }
988 
989 CXCursor cxcursor::MakeCursorTypeRef(const TypeDecl *Type, SourceLocation Loc,
990                                      CXTranslationUnit TU) {
991   assert(Type && TU && "Invalid arguments!");
992   void *RawLoc = Loc.getPtrEncoding();
993   CXCursor C = {CXCursor_TypeRef, 0, {Type, RawLoc, TU}};
994   return C;
995 }
996 
997 std::pair<const TypeDecl *, SourceLocation>
998 cxcursor::getCursorTypeRef(CXCursor C) {
999   assert(C.kind == CXCursor_TypeRef);
1000   return std::make_pair(static_cast<const TypeDecl *>(C.data[0]),
1001                         SourceLocation::getFromPtrEncoding(C.data[1]));
1002 }
1003 
1004 CXCursor cxcursor::MakeCursorTemplateRef(const TemplateDecl *Template,
1005                                          SourceLocation Loc,
1006                                          CXTranslationUnit TU) {
1007   assert(Template && TU && "Invalid arguments!");
1008   void *RawLoc = Loc.getPtrEncoding();
1009   CXCursor C = {CXCursor_TemplateRef, 0, {Template, RawLoc, TU}};
1010   return C;
1011 }
1012 
1013 std::pair<const TemplateDecl *, SourceLocation>
1014 cxcursor::getCursorTemplateRef(CXCursor C) {
1015   assert(C.kind == CXCursor_TemplateRef);
1016   return std::make_pair(static_cast<const TemplateDecl *>(C.data[0]),
1017                         SourceLocation::getFromPtrEncoding(C.data[1]));
1018 }
1019 
1020 CXCursor cxcursor::MakeCursorNamespaceRef(const NamedDecl *NS,
1021                                           SourceLocation Loc,
1022                                           CXTranslationUnit TU) {
1023 
1024   assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
1025          "Invalid arguments!");
1026   void *RawLoc = Loc.getPtrEncoding();
1027   CXCursor C = {CXCursor_NamespaceRef, 0, {NS, RawLoc, TU}};
1028   return C;
1029 }
1030 
1031 std::pair<const NamedDecl *, SourceLocation>
1032 cxcursor::getCursorNamespaceRef(CXCursor C) {
1033   assert(C.kind == CXCursor_NamespaceRef);
1034   return std::make_pair(static_cast<const NamedDecl *>(C.data[0]),
1035                         SourceLocation::getFromPtrEncoding(C.data[1]));
1036 }
1037 
1038 CXCursor cxcursor::MakeCursorVariableRef(const VarDecl *Var, SourceLocation Loc,
1039                                          CXTranslationUnit TU) {
1040 
1041   assert(Var && TU && "Invalid arguments!");
1042   void *RawLoc = Loc.getPtrEncoding();
1043   CXCursor C = {CXCursor_VariableRef, 0, {Var, RawLoc, TU}};
1044   return C;
1045 }
1046 
1047 std::pair<const VarDecl *, SourceLocation>
1048 cxcursor::getCursorVariableRef(CXCursor C) {
1049   assert(C.kind == CXCursor_VariableRef);
1050   return std::make_pair(static_cast<const VarDecl *>(C.data[0]),
1051                         SourceLocation::getFromPtrEncoding(C.data[1]));
1052 }
1053 
1054 CXCursor cxcursor::MakeCursorMemberRef(const FieldDecl *Field,
1055                                        SourceLocation Loc,
1056                                        CXTranslationUnit TU) {
1057 
1058   assert(Field && TU && "Invalid arguments!");
1059   void *RawLoc = Loc.getPtrEncoding();
1060   CXCursor C = {CXCursor_MemberRef, 0, {Field, RawLoc, TU}};
1061   return C;
1062 }
1063 
1064 std::pair<const FieldDecl *, SourceLocation>
1065 cxcursor::getCursorMemberRef(CXCursor C) {
1066   assert(C.kind == CXCursor_MemberRef);
1067   return std::make_pair(static_cast<const FieldDecl *>(C.data[0]),
1068                         SourceLocation::getFromPtrEncoding(C.data[1]));
1069 }
1070 
1071 CXCursor cxcursor::MakeCursorCXXBaseSpecifier(const CXXBaseSpecifier *B,
1072                                               CXTranslationUnit TU) {
1073   CXCursor C = {CXCursor_CXXBaseSpecifier, 0, {B, nullptr, TU}};
1074   return C;
1075 }
1076 
1077 const CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
1078   assert(C.kind == CXCursor_CXXBaseSpecifier);
1079   return static_cast<const CXXBaseSpecifier *>(C.data[0]);
1080 }
1081 
1082 CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
1083                                                     CXTranslationUnit TU) {
1084   CXCursor C = {
1085       CXCursor_PreprocessingDirective,
1086       0,
1087       {Range.getBegin().getPtrEncoding(), Range.getEnd().getPtrEncoding(), TU}};
1088   return C;
1089 }
1090 
1091 SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
1092   assert(C.kind == CXCursor_PreprocessingDirective);
1093   SourceRange Range(SourceLocation::getFromPtrEncoding(C.data[0]),
1094                     SourceLocation::getFromPtrEncoding(C.data[1]));
1095   ASTUnit *TU = getCursorASTUnit(C);
1096   return TU->mapRangeFromPreamble(Range);
1097 }
1098 
1099 CXCursor cxcursor::MakeMacroDefinitionCursor(const MacroDefinitionRecord *MI,
1100                                              CXTranslationUnit TU) {
1101   CXCursor C = {CXCursor_MacroDefinition, 0, {MI, nullptr, TU}};
1102   return C;
1103 }
1104 
1105 const MacroDefinitionRecord *cxcursor::getCursorMacroDefinition(CXCursor C) {
1106   assert(C.kind == CXCursor_MacroDefinition);
1107   return static_cast<const MacroDefinitionRecord *>(C.data[0]);
1108 }
1109 
1110 CXCursor cxcursor::MakeMacroExpansionCursor(MacroExpansion *MI,
1111                                             CXTranslationUnit TU) {
1112   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, nullptr, TU}};
1113   return C;
1114 }
1115 
1116 CXCursor cxcursor::MakeMacroExpansionCursor(MacroDefinitionRecord *MI,
1117                                             SourceLocation Loc,
1118                                             CXTranslationUnit TU) {
1119   assert(Loc.isValid());
1120   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, Loc.getPtrEncoding(), TU}};
1121   return C;
1122 }
1123 
1124 const IdentifierInfo *cxcursor::MacroExpansionCursor::getName() const {
1125   if (isPseudo())
1126     return getAsMacroDefinition()->getName();
1127   return getAsMacroExpansion()->getName();
1128 }
1129 const MacroDefinitionRecord *
1130 cxcursor::MacroExpansionCursor::getDefinition() const {
1131   if (isPseudo())
1132     return getAsMacroDefinition();
1133   return getAsMacroExpansion()->getDefinition();
1134 }
1135 SourceRange cxcursor::MacroExpansionCursor::getSourceRange() const {
1136   if (isPseudo())
1137     return getPseudoLoc();
1138   return getAsMacroExpansion()->getSourceRange();
1139 }
1140 
1141 CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
1142                                                 CXTranslationUnit TU) {
1143   CXCursor C = {CXCursor_InclusionDirective, 0, {ID, nullptr, TU}};
1144   return C;
1145 }
1146 
1147 const InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
1148   assert(C.kind == CXCursor_InclusionDirective);
1149   return static_cast<const InclusionDirective *>(C.data[0]);
1150 }
1151 
1152 CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
1153                                       CXTranslationUnit TU) {
1154 
1155   assert(Label && TU && "Invalid arguments!");
1156   void *RawLoc = Loc.getPtrEncoding();
1157   CXCursor C = {CXCursor_LabelRef, 0, {Label, RawLoc, TU}};
1158   return C;
1159 }
1160 
1161 std::pair<const LabelStmt *, SourceLocation>
1162 cxcursor::getCursorLabelRef(CXCursor C) {
1163   assert(C.kind == CXCursor_LabelRef);
1164   return std::make_pair(static_cast<const LabelStmt *>(C.data[0]),
1165                         SourceLocation::getFromPtrEncoding(C.data[1]));
1166 }
1167 
1168 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const OverloadExpr *E,
1169                                                CXTranslationUnit TU) {
1170   assert(E && TU && "Invalid arguments!");
1171   OverloadedDeclRefStorage Storage(E);
1172   void *RawLoc = E->getNameLoc().getPtrEncoding();
1173   CXCursor C = {
1174       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1175   return C;
1176 }
1177 
1178 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const Decl *D,
1179                                                SourceLocation Loc,
1180                                                CXTranslationUnit TU) {
1181   assert(D && TU && "Invalid arguments!");
1182   void *RawLoc = Loc.getPtrEncoding();
1183   OverloadedDeclRefStorage Storage(D);
1184   CXCursor C = {
1185       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1186   return C;
1187 }
1188 
1189 CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
1190                                                SourceLocation Loc,
1191                                                CXTranslationUnit TU) {
1192   assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
1193   void *RawLoc = Loc.getPtrEncoding();
1194   OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
1195   CXCursor C = {
1196       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1197   return C;
1198 }
1199 
1200 std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
1201 cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
1202   assert(C.kind == CXCursor_OverloadedDeclRef);
1203   return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(
1204                             const_cast<void *>(C.data[0])),
1205                         SourceLocation::getFromPtrEncoding(C.data[1]));
1206 }
1207 
1208 const Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
1209   return static_cast<const Decl *>(Cursor.data[0]);
1210 }
1211 
1212 const Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
1213   return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
1214 }
1215 
1216 const Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
1217   if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
1218       Cursor.kind == CXCursor_ObjCProtocolRef ||
1219       Cursor.kind == CXCursor_ObjCClassRef)
1220     return nullptr;
1221 
1222   return static_cast<const Stmt *>(Cursor.data[1]);
1223 }
1224 
1225 const Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
1226   return static_cast<const Attr *>(Cursor.data[1]);
1227 }
1228 
1229 ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
1230   return getCursorASTUnit(Cursor)->getASTContext();
1231 }
1232 
1233 ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
1234   CXTranslationUnit TU = getCursorTU(Cursor);
1235   if (!TU)
1236     return nullptr;
1237   return cxtu::getASTUnit(TU);
1238 }
1239 
1240 CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
1241   return static_cast<CXTranslationUnit>(const_cast<void *>(Cursor.data[2]));
1242 }
1243 
1244 void cxcursor::getOverriddenCursors(CXCursor cursor,
1245                                     SmallVectorImpl<CXCursor> &overridden) {
1246   assert(clang_isDeclaration(cursor.kind));
1247   const NamedDecl *D = dyn_cast_or_null<NamedDecl>(getCursorDecl(cursor));
1248   if (!D)
1249     return;
1250 
1251   CXTranslationUnit TU = getCursorTU(cursor);
1252   SmallVector<const NamedDecl *, 8> OverDecls;
1253   D->getASTContext().getOverriddenMethods(D, OverDecls);
1254 
1255   for (SmallVectorImpl<const NamedDecl *>::iterator I = OverDecls.begin(),
1256                                                     E = OverDecls.end();
1257        I != E; ++I) {
1258     overridden.push_back(MakeCXCursor(*I, TU));
1259   }
1260 }
1261 
1262 std::pair<int, SourceLocation>
1263 cxcursor::getSelectorIdentifierIndexAndLoc(CXCursor cursor) {
1264   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1265     if (cursor.xdata != -1)
1266       return std::make_pair(cursor.xdata,
1267                             cast<ObjCMessageExpr>(getCursorExpr(cursor))
1268                                 ->getSelectorLoc(cursor.xdata));
1269   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1270              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1271     if (cursor.xdata != -1)
1272       return std::make_pair(cursor.xdata,
1273                             cast<ObjCMethodDecl>(getCursorDecl(cursor))
1274                                 ->getSelectorLoc(cursor.xdata));
1275   }
1276 
1277   return std::make_pair(-1, SourceLocation());
1278 }
1279 
1280 CXCursor cxcursor::getSelectorIdentifierCursor(int SelIdx, CXCursor cursor) {
1281   CXCursor newCursor = cursor;
1282 
1283   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1284     if (SelIdx == -1 ||
1285         unsigned(SelIdx) >=
1286             cast<ObjCMessageExpr>(getCursorExpr(cursor))->getNumSelectorLocs())
1287       newCursor.xdata = -1;
1288     else
1289       newCursor.xdata = SelIdx;
1290   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1291              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1292     if (SelIdx == -1 ||
1293         unsigned(SelIdx) >=
1294             cast<ObjCMethodDecl>(getCursorDecl(cursor))->getNumSelectorLocs())
1295       newCursor.xdata = -1;
1296     else
1297       newCursor.xdata = SelIdx;
1298   }
1299 
1300   return newCursor;
1301 }
1302 
1303 CXCursor cxcursor::getTypeRefCursor(CXCursor cursor) {
1304   if (cursor.kind != CXCursor_CallExpr)
1305     return cursor;
1306 
1307   if (cursor.xdata == 0)
1308     return cursor;
1309 
1310   const Expr *E = getCursorExpr(cursor);
1311   TypeSourceInfo *Type = nullptr;
1312   if (const CXXUnresolvedConstructExpr *UnCtor =
1313           dyn_cast<CXXUnresolvedConstructExpr>(E)) {
1314     Type = UnCtor->getTypeSourceInfo();
1315   } else if (const CXXTemporaryObjectExpr *Tmp =
1316                  dyn_cast<CXXTemporaryObjectExpr>(E)) {
1317     Type = Tmp->getTypeSourceInfo();
1318   }
1319 
1320   if (!Type)
1321     return cursor;
1322 
1323   CXTranslationUnit TU = getCursorTU(cursor);
1324   QualType Ty = Type->getType();
1325   TypeLoc TL = Type->getTypeLoc();
1326   SourceLocation Loc = TL.getBeginLoc();
1327 
1328   if (const ElaboratedType *ElabT = Ty->getAs<ElaboratedType>()) {
1329     Ty = ElabT->getNamedType();
1330     ElaboratedTypeLoc ElabTL = TL.castAs<ElaboratedTypeLoc>();
1331     Loc = ElabTL.getNamedTypeLoc().getBeginLoc();
1332   }
1333 
1334   if (const TypedefType *Typedef = Ty->getAs<TypedefType>())
1335     return MakeCursorTypeRef(Typedef->getDecl(), Loc, TU);
1336   if (const TagType *Tag = Ty->getAs<TagType>())
1337     return MakeCursorTypeRef(Tag->getDecl(), Loc, TU);
1338   if (const TemplateTypeParmType *TemplP = Ty->getAs<TemplateTypeParmType>())
1339     return MakeCursorTypeRef(TemplP->getDecl(), Loc, TU);
1340 
1341   return cursor;
1342 }
1343 
1344 bool cxcursor::operator==(CXCursor X, CXCursor Y) {
1345   return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
1346          X.data[2] == Y.data[2];
1347 }
1348 
1349 // FIXME: Remove once we can model DeclGroups and their appropriate ranges
1350 // properly in the ASTs.
1351 bool cxcursor::isFirstInDeclGroup(CXCursor C) {
1352   assert(clang_isDeclaration(C.kind));
1353   return ((uintptr_t)(C.data[1])) != 0;
1354 }
1355 
1356 //===----------------------------------------------------------------------===//
1357 // libclang CXCursor APIs
1358 //===----------------------------------------------------------------------===//
1359 
1360 int clang_Cursor_isNull(CXCursor cursor) {
1361   return clang_equalCursors(cursor, clang_getNullCursor());
1362 }
1363 
1364 CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor cursor) {
1365   return getCursorTU(cursor);
1366 }
1367 
1368 int clang_Cursor_getNumArguments(CXCursor C) {
1369   if (clang_isDeclaration(C.kind)) {
1370     const Decl *D = cxcursor::getCursorDecl(C);
1371     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D))
1372       return MD->param_size();
1373     if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
1374       return FD->param_size();
1375   }
1376 
1377   if (clang_isExpression(C.kind)) {
1378     const Expr *E = cxcursor::getCursorExpr(C);
1379     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1380       return CE->getNumArgs();
1381     }
1382     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1383       return CE->getNumArgs();
1384     }
1385   }
1386 
1387   return -1;
1388 }
1389 
1390 CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i) {
1391   if (clang_isDeclaration(C.kind)) {
1392     const Decl *D = cxcursor::getCursorDecl(C);
1393     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
1394       if (i < MD->param_size())
1395         return cxcursor::MakeCXCursor(MD->parameters()[i],
1396                                       cxcursor::getCursorTU(C));
1397     } else if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) {
1398       if (i < FD->param_size())
1399         return cxcursor::MakeCXCursor(FD->parameters()[i],
1400                                       cxcursor::getCursorTU(C));
1401     }
1402   }
1403 
1404   if (clang_isExpression(C.kind)) {
1405     const Expr *E = cxcursor::getCursorExpr(C);
1406     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1407       if (i < CE->getNumArgs()) {
1408         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1409                                       cxcursor::getCursorTU(C));
1410       }
1411     }
1412     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1413       if (i < CE->getNumArgs()) {
1414         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1415                                       cxcursor::getCursorTU(C));
1416       }
1417     }
1418   }
1419 
1420   return clang_getNullCursor();
1421 }
1422 
1423 int clang_Cursor_getNumTemplateArguments(CXCursor C) {
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     const FunctionTemplateSpecializationInfo *SpecInfo =
1434         FD->getTemplateSpecializationInfo();
1435     if (!SpecInfo) {
1436       return -1;
1437     }
1438     return SpecInfo->TemplateArguments->size();
1439   }
1440 
1441   if (const auto *SD =
1442           llvm::dyn_cast_if_present<clang::ClassTemplateSpecializationDecl>(
1443               getCursorDecl(C))) {
1444     return SD->getTemplateArgs().size();
1445   }
1446 
1447   return -1;
1448 }
1449 
1450 enum CXGetTemplateArgumentStatus {
1451   /** The operation completed successfully */
1452   CXGetTemplateArgumentStatus_Success = 0,
1453 
1454   /** The specified cursor did not represent a FunctionDecl or
1455       ClassTemplateSpecializationDecl.                         */
1456   CXGetTemplateArgumentStatus_CursorNotCompatibleDecl = -1,
1457 
1458   /** The specified cursor was not castable to a FunctionDecl or
1459       ClassTemplateSpecializationDecl.                         */
1460   CXGetTemplateArgumentStatus_BadDeclCast = -2,
1461 
1462   /** A NULL FunctionTemplateSpecializationInfo was retrieved. */
1463   CXGetTemplateArgumentStatus_NullTemplSpecInfo = -3,
1464 
1465   /** An invalid (OOB) argument index was specified */
1466   CXGetTemplateArgumentStatus_InvalidIndex = -4
1467 };
1468 
1469 static int clang_Cursor_getTemplateArgument(CXCursor C, unsigned I,
1470                                             TemplateArgument *TA) {
1471   CXCursorKind kind = clang_getCursorKind(C);
1472   if (kind != CXCursor_FunctionDecl && kind != CXCursor_StructDecl &&
1473       kind != CXCursor_ClassDecl &&
1474       kind != CXCursor_ClassTemplatePartialSpecialization) {
1475     return -1;
1476   }
1477 
1478   if (const auto *FD =
1479           llvm::dyn_cast_if_present<clang::FunctionDecl>(getCursorDecl(C))) {
1480 
1481     const FunctionTemplateSpecializationInfo *SpecInfo =
1482         FD->getTemplateSpecializationInfo();
1483     if (!SpecInfo) {
1484       return CXGetTemplateArgumentStatus_NullTemplSpecInfo;
1485     }
1486 
1487     if (I >= SpecInfo->TemplateArguments->size()) {
1488       return CXGetTemplateArgumentStatus_InvalidIndex;
1489     }
1490 
1491     *TA = SpecInfo->TemplateArguments->get(I);
1492     return 0;
1493   }
1494 
1495   if (const auto *SD =
1496           llvm::dyn_cast_if_present<clang::ClassTemplateSpecializationDecl>(
1497               getCursorDecl(C))) {
1498     if (I >= SD->getTemplateArgs().size()) {
1499       return CXGetTemplateArgumentStatus_InvalidIndex;
1500     }
1501 
1502     *TA = SD->getTemplateArgs()[I];
1503     return 0;
1504   }
1505 
1506   return CXGetTemplateArgumentStatus_BadDeclCast;
1507 }
1508 
1509 enum CXTemplateArgumentKind clang_Cursor_getTemplateArgumentKind(CXCursor C,
1510                                                                  unsigned I) {
1511   TemplateArgument TA;
1512   if (clang_Cursor_getTemplateArgument(C, I, &TA)) {
1513     return CXTemplateArgumentKind_Invalid;
1514   }
1515 
1516   switch (TA.getKind()) {
1517   case TemplateArgument::Null:
1518     return CXTemplateArgumentKind_Null;
1519   case TemplateArgument::Type:
1520     return CXTemplateArgumentKind_Type;
1521   case TemplateArgument::Declaration:
1522     return CXTemplateArgumentKind_Declaration;
1523   case TemplateArgument::NullPtr:
1524     return CXTemplateArgumentKind_NullPtr;
1525   case TemplateArgument::Integral:
1526     return CXTemplateArgumentKind_Integral;
1527   case TemplateArgument::StructuralValue:
1528     // FIXME: Expose these values.
1529     return CXTemplateArgumentKind_Invalid;
1530   case TemplateArgument::Template:
1531     return CXTemplateArgumentKind_Template;
1532   case TemplateArgument::TemplateExpansion:
1533     return CXTemplateArgumentKind_TemplateExpansion;
1534   case TemplateArgument::Expression:
1535     return CXTemplateArgumentKind_Expression;
1536   case TemplateArgument::Pack:
1537     return CXTemplateArgumentKind_Pack;
1538   }
1539 
1540   return CXTemplateArgumentKind_Invalid;
1541 }
1542 
1543 CXType clang_Cursor_getTemplateArgumentType(CXCursor C, unsigned I) {
1544   TemplateArgument TA;
1545   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1546       CXGetTemplateArgumentStatus_Success) {
1547     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1548   }
1549 
1550   if (TA.getKind() != TemplateArgument::Type) {
1551     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1552   }
1553 
1554   return cxtype::MakeCXType(TA.getAsType(), getCursorTU(C));
1555 }
1556 
1557 long long clang_Cursor_getTemplateArgumentValue(CXCursor C, unsigned I) {
1558   TemplateArgument TA;
1559   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1560       CXGetTemplateArgumentStatus_Success) {
1561     assert(0 && "Unable to retrieve TemplateArgument");
1562     return 0;
1563   }
1564 
1565   if (TA.getKind() != TemplateArgument::Integral) {
1566     assert(0 && "Passed template argument is not Integral");
1567     return 0;
1568   }
1569 
1570   return TA.getAsIntegral().getSExtValue();
1571 }
1572 
1573 unsigned long long clang_Cursor_getTemplateArgumentUnsignedValue(CXCursor C,
1574                                                                  unsigned I) {
1575   TemplateArgument TA;
1576   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1577       CXGetTemplateArgumentStatus_Success) {
1578     assert(0 && "Unable to retrieve TemplateArgument");
1579     return 0;
1580   }
1581 
1582   if (TA.getKind() != TemplateArgument::Integral) {
1583     assert(0 && "Passed template argument is not Integral");
1584     return 0;
1585   }
1586 
1587   return TA.getAsIntegral().getZExtValue();
1588 }
1589 
1590 //===----------------------------------------------------------------------===//
1591 // CXCursorSet.
1592 //===----------------------------------------------------------------------===//
1593 
1594 typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
1595 
1596 static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
1597   return (CXCursorSet)setImpl;
1598 }
1599 static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
1600   return (CXCursorSet_Impl *)set;
1601 }
1602 namespace llvm {
1603 template <> struct DenseMapInfo<CXCursor> {
1604 public:
1605   static inline CXCursor getEmptyKey() {
1606     return MakeCXCursorInvalid(CXCursor_InvalidFile);
1607   }
1608   static inline CXCursor getTombstoneKey() {
1609     return MakeCXCursorInvalid(CXCursor_NoDeclFound);
1610   }
1611   static inline unsigned getHashValue(const CXCursor &cursor) {
1612     return llvm::DenseMapInfo<std::pair<const void *, const void *>>::
1613         getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
1614   }
1615   static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
1616     return x.kind == y.kind && x.data[0] == y.data[0] && x.data[1] == y.data[1];
1617   }
1618 };
1619 } // namespace llvm
1620 
1621 CXCursorSet clang_createCXCursorSet() {
1622   return packCXCursorSet(new CXCursorSet_Impl());
1623 }
1624 
1625 void clang_disposeCXCursorSet(CXCursorSet set) {
1626   delete unpackCXCursorSet(set);
1627 }
1628 
1629 unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
1630   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1631   if (!setImpl)
1632     return 0;
1633   return setImpl->find(cursor) != setImpl->end();
1634 }
1635 
1636 unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
1637   // Do not insert invalid cursors into the set.
1638   if (cursor.kind >= CXCursor_FirstInvalid &&
1639       cursor.kind <= CXCursor_LastInvalid)
1640     return 1;
1641 
1642   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1643   if (!setImpl)
1644     return 1;
1645   unsigned &entry = (*setImpl)[cursor];
1646   unsigned flag = entry == 0 ? 1 : 0;
1647   entry = 1;
1648   return flag;
1649 }
1650 
1651 CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
1652   enum CXCursorKind kind = clang_getCursorKind(cursor);
1653   if (clang_isDeclaration(kind)) {
1654     const Decl *decl = getCursorDecl(cursor);
1655     if (const NamedDecl *namedDecl = dyn_cast_or_null<NamedDecl>(decl)) {
1656       ASTUnit *unit = getCursorASTUnit(cursor);
1657       CodeCompletionResult Result(namedDecl, CCP_Declaration);
1658       CodeCompletionString *String = Result.CreateCodeCompletionString(
1659           unit->getASTContext(), unit->getPreprocessor(),
1660           CodeCompletionContext::CCC_Other,
1661           unit->getCodeCompletionTUInfo().getAllocator(),
1662           unit->getCodeCompletionTUInfo(), true);
1663       return String;
1664     }
1665   } else if (kind == CXCursor_MacroDefinition) {
1666     const MacroDefinitionRecord *definition = getCursorMacroDefinition(cursor);
1667     const IdentifierInfo *Macro = definition->getName();
1668     ASTUnit *unit = getCursorASTUnit(cursor);
1669     CodeCompletionResult Result(
1670         Macro,
1671         unit->getPreprocessor().getMacroDefinition(Macro).getMacroInfo());
1672     CodeCompletionString *String = Result.CreateCodeCompletionString(
1673         unit->getASTContext(), unit->getPreprocessor(),
1674         CodeCompletionContext::CCC_Other,
1675         unit->getCodeCompletionTUInfo().getAllocator(),
1676         unit->getCodeCompletionTUInfo(), false);
1677     return String;
1678   }
1679   return nullptr;
1680 }
1681 
1682 namespace {
1683 struct OverridenCursorsPool {
1684   typedef SmallVector<CXCursor, 2> CursorVec;
1685   std::vector<CursorVec *> AllCursors;
1686   std::vector<CursorVec *> AvailableCursors;
1687 
1688   ~OverridenCursorsPool() {
1689     for (std::vector<CursorVec *>::iterator I = AllCursors.begin(),
1690                                             E = AllCursors.end();
1691          I != E; ++I) {
1692       delete *I;
1693     }
1694   }
1695 };
1696 } // namespace
1697 
1698 void *cxcursor::createOverridenCXCursorsPool() {
1699   return new OverridenCursorsPool();
1700 }
1701 
1702 void cxcursor::disposeOverridenCXCursorsPool(void *pool) {
1703   delete static_cast<OverridenCursorsPool *>(pool);
1704 }
1705 
1706 void clang_getOverriddenCursors(CXCursor cursor, CXCursor **overridden,
1707                                 unsigned *num_overridden) {
1708   if (overridden)
1709     *overridden = nullptr;
1710   if (num_overridden)
1711     *num_overridden = 0;
1712 
1713   CXTranslationUnit TU = cxcursor::getCursorTU(cursor);
1714 
1715   if (!overridden || !num_overridden || !TU)
1716     return;
1717 
1718   if (!clang_isDeclaration(cursor.kind))
1719     return;
1720 
1721   OverridenCursorsPool &pool =
1722       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1723 
1724   OverridenCursorsPool::CursorVec *Vec = nullptr;
1725 
1726   if (!pool.AvailableCursors.empty()) {
1727     Vec = pool.AvailableCursors.back();
1728     pool.AvailableCursors.pop_back();
1729   } else {
1730     Vec = new OverridenCursorsPool::CursorVec();
1731     pool.AllCursors.push_back(Vec);
1732   }
1733 
1734   // Clear out the vector, but don't free the memory contents.  This
1735   // reduces malloc() traffic.
1736   Vec->clear();
1737 
1738   // Use the first entry to contain a back reference to the vector.
1739   // This is a complete hack.
1740   CXCursor backRefCursor = MakeCXCursorInvalid(CXCursor_InvalidFile, TU);
1741   backRefCursor.data[0] = Vec;
1742   assert(cxcursor::getCursorTU(backRefCursor) == TU);
1743   Vec->push_back(backRefCursor);
1744 
1745   // Get the overridden cursors.
1746   cxcursor::getOverriddenCursors(cursor, *Vec);
1747 
1748   // Did we get any overridden cursors?  If not, return Vec to the pool
1749   // of available cursor vectors.
1750   if (Vec->size() == 1) {
1751     pool.AvailableCursors.push_back(Vec);
1752     return;
1753   }
1754 
1755   // Now tell the caller about the overridden cursors.
1756   assert(Vec->size() > 1);
1757   *overridden = &((*Vec)[1]);
1758   *num_overridden = Vec->size() - 1;
1759 }
1760 
1761 void clang_disposeOverriddenCursors(CXCursor *overridden) {
1762   if (!overridden)
1763     return;
1764 
1765   // Use pointer arithmetic to get back the first faux entry
1766   // which has a back-reference to the TU and the vector.
1767   --overridden;
1768   OverridenCursorsPool::CursorVec *Vec =
1769       static_cast<OverridenCursorsPool::CursorVec *>(
1770           const_cast<void *>(overridden->data[0]));
1771   CXTranslationUnit TU = getCursorTU(*overridden);
1772 
1773   assert(Vec && TU);
1774 
1775   OverridenCursorsPool &pool =
1776       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1777 
1778   pool.AvailableCursors.push_back(Vec);
1779 }
1780 
1781 int clang_Cursor_isDynamicCall(CXCursor C) {
1782   const Expr *E = nullptr;
1783   if (clang_isExpression(C.kind))
1784     E = getCursorExpr(C);
1785   if (!E)
1786     return 0;
1787 
1788   if (const ObjCMessageExpr *MsgE = dyn_cast<ObjCMessageExpr>(E)) {
1789     if (MsgE->getReceiverKind() != ObjCMessageExpr::Instance)
1790       return false;
1791     if (auto *RecE = dyn_cast<ObjCMessageExpr>(
1792             MsgE->getInstanceReceiver()->IgnoreParenCasts())) {
1793       if (RecE->getMethodFamily() == OMF_alloc)
1794         return false;
1795     }
1796     return true;
1797   }
1798 
1799   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1800     return !PropRefE->isSuperReceiver();
1801   }
1802 
1803   const MemberExpr *ME = nullptr;
1804   if (isa<MemberExpr>(E))
1805     ME = cast<MemberExpr>(E);
1806   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1807     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1808 
1809   if (ME) {
1810     if (const CXXMethodDecl *MD =
1811             dyn_cast_or_null<CXXMethodDecl>(ME->getMemberDecl()))
1812       return MD->isVirtual() &&
1813              ME->performsVirtualDispatch(
1814                  cxcursor::getCursorContext(C).getLangOpts());
1815   }
1816 
1817   return 0;
1818 }
1819 
1820 CXType clang_Cursor_getReceiverType(CXCursor C) {
1821   CXTranslationUnit TU = cxcursor::getCursorTU(C);
1822   const Expr *E = nullptr;
1823   if (clang_isExpression(C.kind))
1824     E = getCursorExpr(C);
1825 
1826   if (const ObjCMessageExpr *MsgE = dyn_cast_or_null<ObjCMessageExpr>(E))
1827     return cxtype::MakeCXType(MsgE->getReceiverType(), TU);
1828 
1829   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1830     return cxtype::MakeCXType(
1831         PropRefE->getReceiverType(cxcursor::getCursorContext(C)), TU);
1832   }
1833 
1834   const MemberExpr *ME = nullptr;
1835   if (isa<MemberExpr>(E))
1836     ME = cast<MemberExpr>(E);
1837   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1838     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1839 
1840   if (ME) {
1841     if (isa_and_nonnull<CXXMethodDecl>(ME->getMemberDecl())) {
1842       auto receiverTy = ME->getBase()->IgnoreImpCasts()->getType();
1843       return cxtype::MakeCXType(receiverTy, TU);
1844     }
1845   }
1846 
1847   return cxtype::MakeCXType(QualType(), TU);
1848 }
1849