xref: /llvm-project/clang/tools/libclang/CXCursor.cpp (revision ee8524087c78a673fcf5486ded69ee597a85e0f1) 
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     K = CXCursor_UnexposedExpr;
339     break;
340 
341   case Stmt::OpaqueValueExprClass:
342     if (Expr *Src = cast<OpaqueValueExpr>(S)->getSourceExpr())
343       return MakeCXCursor(Src, Parent, TU, RegionOfInterest);
344     K = CXCursor_UnexposedExpr;
345     break;
346 
347   case Stmt::PseudoObjectExprClass:
348     return MakeCXCursor(cast<PseudoObjectExpr>(S)->getSyntacticForm(), Parent,
349                         TU, RegionOfInterest);
350 
351   case Stmt::CompoundStmtClass:
352     K = CXCursor_CompoundStmt;
353     break;
354 
355   case Stmt::NullStmtClass:
356     K = CXCursor_NullStmt;
357     break;
358 
359   case Stmt::LabelStmtClass:
360     K = CXCursor_LabelStmt;
361     break;
362 
363   case Stmt::AttributedStmtClass:
364     K = CXCursor_UnexposedStmt;
365     break;
366 
367   case Stmt::DeclStmtClass:
368     K = CXCursor_DeclStmt;
369     break;
370 
371   case Stmt::CapturedStmtClass:
372     K = CXCursor_UnexposedStmt;
373     break;
374 
375   case Stmt::IntegerLiteralClass:
376     K = CXCursor_IntegerLiteral;
377     break;
378 
379   case Stmt::FixedPointLiteralClass:
380     K = CXCursor_FixedPointLiteral;
381     break;
382 
383   case Stmt::FloatingLiteralClass:
384     K = CXCursor_FloatingLiteral;
385     break;
386 
387   case Stmt::ImaginaryLiteralClass:
388     K = CXCursor_ImaginaryLiteral;
389     break;
390 
391   case Stmt::StringLiteralClass:
392     K = CXCursor_StringLiteral;
393     break;
394 
395   case Stmt::CharacterLiteralClass:
396     K = CXCursor_CharacterLiteral;
397     break;
398 
399   case Stmt::ConstantExprClass:
400     return MakeCXCursor(cast<ConstantExpr>(S)->getSubExpr(), Parent, TU,
401                         RegionOfInterest);
402 
403   case Stmt::ParenExprClass:
404     K = CXCursor_ParenExpr;
405     break;
406 
407   case Stmt::UnaryOperatorClass:
408     K = CXCursor_UnaryOperator;
409     break;
410 
411   case Stmt::UnaryExprOrTypeTraitExprClass:
412   case Stmt::CXXNoexceptExprClass:
413     K = CXCursor_UnaryExpr;
414     break;
415 
416   case Stmt::MSPropertySubscriptExprClass:
417   case Stmt::ArraySubscriptExprClass:
418     K = CXCursor_ArraySubscriptExpr;
419     break;
420 
421   case Stmt::MatrixSubscriptExprClass:
422     // TODO: add support for MatrixSubscriptExpr.
423     K = CXCursor_UnexposedExpr;
424     break;
425 
426   case Stmt::OMPArraySectionExprClass:
427     K = CXCursor_OMPArraySectionExpr;
428     break;
429 
430   case Stmt::OMPArrayShapingExprClass:
431     K = CXCursor_OMPArrayShapingExpr;
432     break;
433 
434   case Stmt::OMPIteratorExprClass:
435     K = CXCursor_OMPIteratorExpr;
436     break;
437 
438   case Stmt::BinaryOperatorClass:
439     K = CXCursor_BinaryOperator;
440     break;
441 
442   case Stmt::CompoundAssignOperatorClass:
443     K = CXCursor_CompoundAssignOperator;
444     break;
445 
446   case Stmt::ConditionalOperatorClass:
447     K = CXCursor_ConditionalOperator;
448     break;
449 
450   case Stmt::CStyleCastExprClass:
451     K = CXCursor_CStyleCastExpr;
452     break;
453 
454   case Stmt::CompoundLiteralExprClass:
455     K = CXCursor_CompoundLiteralExpr;
456     break;
457 
458   case Stmt::InitListExprClass:
459     K = CXCursor_InitListExpr;
460     break;
461 
462   case Stmt::AddrLabelExprClass:
463     K = CXCursor_AddrLabelExpr;
464     break;
465 
466   case Stmt::StmtExprClass:
467     K = CXCursor_StmtExpr;
468     break;
469 
470   case Stmt::GenericSelectionExprClass:
471     K = CXCursor_GenericSelectionExpr;
472     break;
473 
474   case Stmt::GNUNullExprClass:
475     K = CXCursor_GNUNullExpr;
476     break;
477 
478   case Stmt::CXXStaticCastExprClass:
479     K = CXCursor_CXXStaticCastExpr;
480     break;
481 
482   case Stmt::CXXDynamicCastExprClass:
483     K = CXCursor_CXXDynamicCastExpr;
484     break;
485 
486   case Stmt::CXXReinterpretCastExprClass:
487     K = CXCursor_CXXReinterpretCastExpr;
488     break;
489 
490   case Stmt::CXXConstCastExprClass:
491     K = CXCursor_CXXConstCastExpr;
492     break;
493 
494   case Stmt::CXXFunctionalCastExprClass:
495     K = CXCursor_CXXFunctionalCastExpr;
496     break;
497 
498   case Stmt::CXXAddrspaceCastExprClass:
499     K = CXCursor_CXXAddrspaceCastExpr;
500     break;
501 
502   case Stmt::CXXTypeidExprClass:
503     K = CXCursor_CXXTypeidExpr;
504     break;
505 
506   case Stmt::CXXBoolLiteralExprClass:
507     K = CXCursor_CXXBoolLiteralExpr;
508     break;
509 
510   case Stmt::CXXNullPtrLiteralExprClass:
511     K = CXCursor_CXXNullPtrLiteralExpr;
512     break;
513 
514   case Stmt::CXXThisExprClass:
515     K = CXCursor_CXXThisExpr;
516     break;
517 
518   case Stmt::CXXThrowExprClass:
519     K = CXCursor_CXXThrowExpr;
520     break;
521 
522   case Stmt::CXXNewExprClass:
523     K = CXCursor_CXXNewExpr;
524     break;
525 
526   case Stmt::CXXDeleteExprClass:
527     K = CXCursor_CXXDeleteExpr;
528     break;
529 
530   case Stmt::ObjCStringLiteralClass:
531     K = CXCursor_ObjCStringLiteral;
532     break;
533 
534   case Stmt::ObjCEncodeExprClass:
535     K = CXCursor_ObjCEncodeExpr;
536     break;
537 
538   case Stmt::ObjCSelectorExprClass:
539     K = CXCursor_ObjCSelectorExpr;
540     break;
541 
542   case Stmt::ObjCProtocolExprClass:
543     K = CXCursor_ObjCProtocolExpr;
544     break;
545 
546   case Stmt::ObjCBoolLiteralExprClass:
547     K = CXCursor_ObjCBoolLiteralExpr;
548     break;
549 
550   case Stmt::ObjCAvailabilityCheckExprClass:
551     K = CXCursor_ObjCAvailabilityCheckExpr;
552     break;
553 
554   case Stmt::ObjCBridgedCastExprClass:
555     K = CXCursor_ObjCBridgedCastExpr;
556     break;
557 
558   case Stmt::BlockExprClass:
559     K = CXCursor_BlockExpr;
560     break;
561 
562   case Stmt::PackExpansionExprClass:
563     K = CXCursor_PackExpansionExpr;
564     break;
565 
566   case Stmt::SizeOfPackExprClass:
567     K = CXCursor_SizeOfPackExpr;
568     break;
569 
570   case Stmt::DeclRefExprClass:
571     if (const ImplicitParamDecl *IPD = dyn_cast_or_null<ImplicitParamDecl>(
572             cast<DeclRefExpr>(S)->getDecl())) {
573       if (const ObjCMethodDecl *MD =
574               dyn_cast<ObjCMethodDecl>(IPD->getDeclContext())) {
575         if (MD->getSelfDecl() == IPD) {
576           K = CXCursor_ObjCSelfExpr;
577           break;
578         }
579       }
580     }
581 
582     K = CXCursor_DeclRefExpr;
583     break;
584 
585   case Stmt::DependentScopeDeclRefExprClass:
586   case Stmt::SubstNonTypeTemplateParmExprClass:
587   case Stmt::SubstNonTypeTemplateParmPackExprClass:
588   case Stmt::FunctionParmPackExprClass:
589   case Stmt::UnresolvedLookupExprClass:
590   case Stmt::TypoExprClass: // A typo could actually be a DeclRef or a MemberRef
591     K = CXCursor_DeclRefExpr;
592     break;
593 
594   case Stmt::CXXDependentScopeMemberExprClass:
595   case Stmt::CXXPseudoDestructorExprClass:
596   case Stmt::MemberExprClass:
597   case Stmt::MSPropertyRefExprClass:
598   case Stmt::ObjCIsaExprClass:
599   case Stmt::ObjCIvarRefExprClass:
600   case Stmt::ObjCPropertyRefExprClass:
601   case Stmt::UnresolvedMemberExprClass:
602     K = CXCursor_MemberRefExpr;
603     break;
604 
605   case Stmt::CallExprClass:
606   case Stmt::CXXOperatorCallExprClass:
607   case Stmt::CXXMemberCallExprClass:
608   case Stmt::CUDAKernelCallExprClass:
609   case Stmt::CXXConstructExprClass:
610   case Stmt::CXXInheritedCtorInitExprClass:
611   case Stmt::CXXTemporaryObjectExprClass:
612   case Stmt::CXXUnresolvedConstructExprClass:
613   case Stmt::UserDefinedLiteralClass:
614     K = CXCursor_CallExpr;
615     break;
616 
617   case Stmt::LambdaExprClass:
618     K = CXCursor_LambdaExpr;
619     break;
620 
621   case Stmt::ObjCMessageExprClass: {
622     K = CXCursor_ObjCMessageExpr;
623     int SelectorIdIndex = -1;
624     // Check if cursor points to a selector id.
625     if (RegionOfInterest.isValid() &&
626         RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
627       SmallVector<SourceLocation, 16> SelLocs;
628       cast<ObjCMessageExpr>(S)->getSelectorLocs(SelLocs);
629       SmallVectorImpl<SourceLocation>::iterator I =
630           llvm::find(SelLocs, RegionOfInterest.getBegin());
631       if (I != SelLocs.end())
632         SelectorIdIndex = I - SelLocs.begin();
633     }
634     CXCursor C = {K, 0, {Parent, S, TU}};
635     return getSelectorIdentifierCursor(SelectorIdIndex, C);
636   }
637 
638   case Stmt::ConceptSpecializationExprClass:
639     K = CXCursor_ConceptSpecializationExpr;
640     break;
641 
642   case Stmt::RequiresExprClass:
643     K = CXCursor_RequiresExpr;
644     break;
645 
646   case Stmt::MSDependentExistsStmtClass:
647     K = CXCursor_UnexposedStmt;
648     break;
649   case Stmt::OMPCanonicalLoopClass:
650     K = CXCursor_OMPCanonicalLoop;
651     break;
652   case Stmt::OMPMetaDirectiveClass:
653     K = CXCursor_OMPMetaDirective;
654     break;
655   case Stmt::OMPParallelDirectiveClass:
656     K = CXCursor_OMPParallelDirective;
657     break;
658   case Stmt::OMPSimdDirectiveClass:
659     K = CXCursor_OMPSimdDirective;
660     break;
661   case Stmt::OMPTileDirectiveClass:
662     K = CXCursor_OMPTileDirective;
663     break;
664   case Stmt::OMPUnrollDirectiveClass:
665     K = CXCursor_OMPUnrollDirective;
666     break;
667   case Stmt::OMPForDirectiveClass:
668     K = CXCursor_OMPForDirective;
669     break;
670   case Stmt::OMPForSimdDirectiveClass:
671     K = CXCursor_OMPForSimdDirective;
672     break;
673   case Stmt::OMPSectionsDirectiveClass:
674     K = CXCursor_OMPSectionsDirective;
675     break;
676   case Stmt::OMPSectionDirectiveClass:
677     K = CXCursor_OMPSectionDirective;
678     break;
679   case Stmt::OMPSingleDirectiveClass:
680     K = CXCursor_OMPSingleDirective;
681     break;
682   case Stmt::OMPMasterDirectiveClass:
683     K = CXCursor_OMPMasterDirective;
684     break;
685   case Stmt::OMPCriticalDirectiveClass:
686     K = CXCursor_OMPCriticalDirective;
687     break;
688   case Stmt::OMPParallelForDirectiveClass:
689     K = CXCursor_OMPParallelForDirective;
690     break;
691   case Stmt::OMPParallelForSimdDirectiveClass:
692     K = CXCursor_OMPParallelForSimdDirective;
693     break;
694   case Stmt::OMPParallelMasterDirectiveClass:
695     K = CXCursor_OMPParallelMasterDirective;
696     break;
697   case Stmt::OMPParallelSectionsDirectiveClass:
698     K = CXCursor_OMPParallelSectionsDirective;
699     break;
700   case Stmt::OMPTaskDirectiveClass:
701     K = CXCursor_OMPTaskDirective;
702     break;
703   case Stmt::OMPTaskyieldDirectiveClass:
704     K = CXCursor_OMPTaskyieldDirective;
705     break;
706   case Stmt::OMPBarrierDirectiveClass:
707     K = CXCursor_OMPBarrierDirective;
708     break;
709   case Stmt::OMPTaskwaitDirectiveClass:
710     K = CXCursor_OMPTaskwaitDirective;
711     break;
712   case Stmt::OMPTaskgroupDirectiveClass:
713     K = CXCursor_OMPTaskgroupDirective;
714     break;
715   case Stmt::OMPFlushDirectiveClass:
716     K = CXCursor_OMPFlushDirective;
717     break;
718   case Stmt::OMPDepobjDirectiveClass:
719     K = CXCursor_OMPDepobjDirective;
720     break;
721   case Stmt::OMPScanDirectiveClass:
722     K = CXCursor_OMPScanDirective;
723     break;
724   case Stmt::OMPOrderedDirectiveClass:
725     K = CXCursor_OMPOrderedDirective;
726     break;
727   case Stmt::OMPAtomicDirectiveClass:
728     K = CXCursor_OMPAtomicDirective;
729     break;
730   case Stmt::OMPTargetDirectiveClass:
731     K = CXCursor_OMPTargetDirective;
732     break;
733   case Stmt::OMPTargetDataDirectiveClass:
734     K = CXCursor_OMPTargetDataDirective;
735     break;
736   case Stmt::OMPTargetEnterDataDirectiveClass:
737     K = CXCursor_OMPTargetEnterDataDirective;
738     break;
739   case Stmt::OMPTargetExitDataDirectiveClass:
740     K = CXCursor_OMPTargetExitDataDirective;
741     break;
742   case Stmt::OMPTargetParallelDirectiveClass:
743     K = CXCursor_OMPTargetParallelDirective;
744     break;
745   case Stmt::OMPTargetParallelForDirectiveClass:
746     K = CXCursor_OMPTargetParallelForDirective;
747     break;
748   case Stmt::OMPTargetUpdateDirectiveClass:
749     K = CXCursor_OMPTargetUpdateDirective;
750     break;
751   case Stmt::OMPTeamsDirectiveClass:
752     K = CXCursor_OMPTeamsDirective;
753     break;
754   case Stmt::OMPCancellationPointDirectiveClass:
755     K = CXCursor_OMPCancellationPointDirective;
756     break;
757   case Stmt::OMPCancelDirectiveClass:
758     K = CXCursor_OMPCancelDirective;
759     break;
760   case Stmt::OMPTaskLoopDirectiveClass:
761     K = CXCursor_OMPTaskLoopDirective;
762     break;
763   case Stmt::OMPTaskLoopSimdDirectiveClass:
764     K = CXCursor_OMPTaskLoopSimdDirective;
765     break;
766   case Stmt::OMPMasterTaskLoopDirectiveClass:
767     K = CXCursor_OMPMasterTaskLoopDirective;
768     break;
769   case Stmt::OMPMasterTaskLoopSimdDirectiveClass:
770     K = CXCursor_OMPMasterTaskLoopSimdDirective;
771     break;
772   case Stmt::OMPParallelMasterTaskLoopDirectiveClass:
773     K = CXCursor_OMPParallelMasterTaskLoopDirective;
774     break;
775   case Stmt::OMPParallelMasterTaskLoopSimdDirectiveClass:
776     K = CXCursor_OMPParallelMasterTaskLoopSimdDirective;
777     break;
778   case Stmt::OMPDistributeDirectiveClass:
779     K = CXCursor_OMPDistributeDirective;
780     break;
781   case Stmt::OMPDistributeParallelForDirectiveClass:
782     K = CXCursor_OMPDistributeParallelForDirective;
783     break;
784   case Stmt::OMPDistributeParallelForSimdDirectiveClass:
785     K = CXCursor_OMPDistributeParallelForSimdDirective;
786     break;
787   case Stmt::OMPDistributeSimdDirectiveClass:
788     K = CXCursor_OMPDistributeSimdDirective;
789     break;
790   case Stmt::OMPTargetParallelForSimdDirectiveClass:
791     K = CXCursor_OMPTargetParallelForSimdDirective;
792     break;
793   case Stmt::OMPTargetSimdDirectiveClass:
794     K = CXCursor_OMPTargetSimdDirective;
795     break;
796   case Stmt::OMPTeamsDistributeDirectiveClass:
797     K = CXCursor_OMPTeamsDistributeDirective;
798     break;
799   case Stmt::OMPTeamsDistributeSimdDirectiveClass:
800     K = CXCursor_OMPTeamsDistributeSimdDirective;
801     break;
802   case Stmt::OMPTeamsDistributeParallelForSimdDirectiveClass:
803     K = CXCursor_OMPTeamsDistributeParallelForSimdDirective;
804     break;
805   case Stmt::OMPTeamsDistributeParallelForDirectiveClass:
806     K = CXCursor_OMPTeamsDistributeParallelForDirective;
807     break;
808   case Stmt::OMPTargetTeamsDirectiveClass:
809     K = CXCursor_OMPTargetTeamsDirective;
810     break;
811   case Stmt::OMPTargetTeamsDistributeDirectiveClass:
812     K = CXCursor_OMPTargetTeamsDistributeDirective;
813     break;
814   case Stmt::OMPTargetTeamsDistributeParallelForDirectiveClass:
815     K = CXCursor_OMPTargetTeamsDistributeParallelForDirective;
816     break;
817   case Stmt::OMPTargetTeamsDistributeParallelForSimdDirectiveClass:
818     K = CXCursor_OMPTargetTeamsDistributeParallelForSimdDirective;
819     break;
820   case Stmt::OMPTargetTeamsDistributeSimdDirectiveClass:
821     K = CXCursor_OMPTargetTeamsDistributeSimdDirective;
822     break;
823   case Stmt::OMPInteropDirectiveClass:
824     K = CXCursor_OMPInteropDirective;
825     break;
826   case Stmt::OMPDispatchDirectiveClass:
827     K = CXCursor_OMPDispatchDirective;
828     break;
829   case Stmt::OMPMaskedDirectiveClass:
830     K = CXCursor_OMPMaskedDirective;
831     break;
832   case Stmt::OMPGenericLoopDirectiveClass:
833     K = CXCursor_OMPGenericLoopDirective;
834     break;
835   case Stmt::OMPTeamsGenericLoopDirectiveClass:
836     K = CXCursor_OMPTeamsGenericLoopDirective;
837     break;
838   case Stmt::OMPTargetTeamsGenericLoopDirectiveClass:
839     K = CXCursor_OMPTargetTeamsGenericLoopDirective;
840     break;
841   case Stmt::OMPParallelGenericLoopDirectiveClass:
842     K = CXCursor_OMPParallelGenericLoopDirective;
843     break;
844   case Stmt::OMPTargetParallelGenericLoopDirectiveClass:
845     K = CXCursor_OMPTargetParallelGenericLoopDirective;
846     break;
847   case Stmt::BuiltinBitCastExprClass:
848     K = CXCursor_BuiltinBitCastExpr;
849   }
850 
851   CXCursor C = {K, 0, {Parent, S, TU}};
852   return C;
853 }
854 
855 CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
856                                                SourceLocation Loc,
857                                                CXTranslationUnit TU) {
858   assert(Super && TU && "Invalid arguments!");
859   void *RawLoc = Loc.getPtrEncoding();
860   CXCursor C = {CXCursor_ObjCSuperClassRef, 0, {Super, RawLoc, TU}};
861   return C;
862 }
863 
864 std::pair<const ObjCInterfaceDecl *, SourceLocation>
865 cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
866   assert(C.kind == CXCursor_ObjCSuperClassRef);
867   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
868                         SourceLocation::getFromPtrEncoding(C.data[1]));
869 }
870 
871 CXCursor cxcursor::MakeCursorObjCProtocolRef(const ObjCProtocolDecl *Proto,
872                                              SourceLocation Loc,
873                                              CXTranslationUnit TU) {
874   assert(Proto && TU && "Invalid arguments!");
875   void *RawLoc = Loc.getPtrEncoding();
876   CXCursor C = {CXCursor_ObjCProtocolRef, 0, {Proto, RawLoc, TU}};
877   return C;
878 }
879 
880 std::pair<const ObjCProtocolDecl *, SourceLocation>
881 cxcursor::getCursorObjCProtocolRef(CXCursor C) {
882   assert(C.kind == CXCursor_ObjCProtocolRef);
883   return std::make_pair(static_cast<const ObjCProtocolDecl *>(C.data[0]),
884                         SourceLocation::getFromPtrEncoding(C.data[1]));
885 }
886 
887 CXCursor cxcursor::MakeCursorObjCClassRef(const ObjCInterfaceDecl *Class,
888                                           SourceLocation Loc,
889                                           CXTranslationUnit TU) {
890   // 'Class' can be null for invalid code.
891   if (!Class)
892     return MakeCXCursorInvalid(CXCursor_InvalidCode);
893   assert(TU && "Invalid arguments!");
894   void *RawLoc = Loc.getPtrEncoding();
895   CXCursor C = {CXCursor_ObjCClassRef, 0, {Class, RawLoc, TU}};
896   return C;
897 }
898 
899 std::pair<const ObjCInterfaceDecl *, SourceLocation>
900 cxcursor::getCursorObjCClassRef(CXCursor C) {
901   assert(C.kind == CXCursor_ObjCClassRef);
902   return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
903                         SourceLocation::getFromPtrEncoding(C.data[1]));
904 }
905 
906 CXCursor cxcursor::MakeCursorTypeRef(const TypeDecl *Type, SourceLocation Loc,
907                                      CXTranslationUnit TU) {
908   assert(Type && TU && "Invalid arguments!");
909   void *RawLoc = Loc.getPtrEncoding();
910   CXCursor C = {CXCursor_TypeRef, 0, {Type, RawLoc, TU}};
911   return C;
912 }
913 
914 std::pair<const TypeDecl *, SourceLocation>
915 cxcursor::getCursorTypeRef(CXCursor C) {
916   assert(C.kind == CXCursor_TypeRef);
917   return std::make_pair(static_cast<const TypeDecl *>(C.data[0]),
918                         SourceLocation::getFromPtrEncoding(C.data[1]));
919 }
920 
921 CXCursor cxcursor::MakeCursorTemplateRef(const TemplateDecl *Template,
922                                          SourceLocation Loc,
923                                          CXTranslationUnit TU) {
924   assert(Template && TU && "Invalid arguments!");
925   void *RawLoc = Loc.getPtrEncoding();
926   CXCursor C = {CXCursor_TemplateRef, 0, {Template, RawLoc, TU}};
927   return C;
928 }
929 
930 std::pair<const TemplateDecl *, SourceLocation>
931 cxcursor::getCursorTemplateRef(CXCursor C) {
932   assert(C.kind == CXCursor_TemplateRef);
933   return std::make_pair(static_cast<const TemplateDecl *>(C.data[0]),
934                         SourceLocation::getFromPtrEncoding(C.data[1]));
935 }
936 
937 CXCursor cxcursor::MakeCursorNamespaceRef(const NamedDecl *NS,
938                                           SourceLocation Loc,
939                                           CXTranslationUnit TU) {
940 
941   assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
942          "Invalid arguments!");
943   void *RawLoc = Loc.getPtrEncoding();
944   CXCursor C = {CXCursor_NamespaceRef, 0, {NS, RawLoc, TU}};
945   return C;
946 }
947 
948 std::pair<const NamedDecl *, SourceLocation>
949 cxcursor::getCursorNamespaceRef(CXCursor C) {
950   assert(C.kind == CXCursor_NamespaceRef);
951   return std::make_pair(static_cast<const NamedDecl *>(C.data[0]),
952                         SourceLocation::getFromPtrEncoding(C.data[1]));
953 }
954 
955 CXCursor cxcursor::MakeCursorVariableRef(const VarDecl *Var, SourceLocation Loc,
956                                          CXTranslationUnit TU) {
957 
958   assert(Var && TU && "Invalid arguments!");
959   void *RawLoc = Loc.getPtrEncoding();
960   CXCursor C = {CXCursor_VariableRef, 0, {Var, RawLoc, TU}};
961   return C;
962 }
963 
964 std::pair<const VarDecl *, SourceLocation>
965 cxcursor::getCursorVariableRef(CXCursor C) {
966   assert(C.kind == CXCursor_VariableRef);
967   return std::make_pair(static_cast<const VarDecl *>(C.data[0]),
968                         SourceLocation::getFromPtrEncoding(C.data[1]));
969 }
970 
971 CXCursor cxcursor::MakeCursorMemberRef(const FieldDecl *Field,
972                                        SourceLocation Loc,
973                                        CXTranslationUnit TU) {
974 
975   assert(Field && TU && "Invalid arguments!");
976   void *RawLoc = Loc.getPtrEncoding();
977   CXCursor C = {CXCursor_MemberRef, 0, {Field, RawLoc, TU}};
978   return C;
979 }
980 
981 std::pair<const FieldDecl *, SourceLocation>
982 cxcursor::getCursorMemberRef(CXCursor C) {
983   assert(C.kind == CXCursor_MemberRef);
984   return std::make_pair(static_cast<const FieldDecl *>(C.data[0]),
985                         SourceLocation::getFromPtrEncoding(C.data[1]));
986 }
987 
988 CXCursor cxcursor::MakeCursorCXXBaseSpecifier(const CXXBaseSpecifier *B,
989                                               CXTranslationUnit TU) {
990   CXCursor C = {CXCursor_CXXBaseSpecifier, 0, {B, nullptr, TU}};
991   return C;
992 }
993 
994 const CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
995   assert(C.kind == CXCursor_CXXBaseSpecifier);
996   return static_cast<const CXXBaseSpecifier *>(C.data[0]);
997 }
998 
999 CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
1000                                                     CXTranslationUnit TU) {
1001   CXCursor C = {
1002       CXCursor_PreprocessingDirective,
1003       0,
1004       {Range.getBegin().getPtrEncoding(), Range.getEnd().getPtrEncoding(), TU}};
1005   return C;
1006 }
1007 
1008 SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
1009   assert(C.kind == CXCursor_PreprocessingDirective);
1010   SourceRange Range(SourceLocation::getFromPtrEncoding(C.data[0]),
1011                     SourceLocation::getFromPtrEncoding(C.data[1]));
1012   ASTUnit *TU = getCursorASTUnit(C);
1013   return TU->mapRangeFromPreamble(Range);
1014 }
1015 
1016 CXCursor cxcursor::MakeMacroDefinitionCursor(const MacroDefinitionRecord *MI,
1017                                              CXTranslationUnit TU) {
1018   CXCursor C = {CXCursor_MacroDefinition, 0, {MI, nullptr, TU}};
1019   return C;
1020 }
1021 
1022 const MacroDefinitionRecord *cxcursor::getCursorMacroDefinition(CXCursor C) {
1023   assert(C.kind == CXCursor_MacroDefinition);
1024   return static_cast<const MacroDefinitionRecord *>(C.data[0]);
1025 }
1026 
1027 CXCursor cxcursor::MakeMacroExpansionCursor(MacroExpansion *MI,
1028                                             CXTranslationUnit TU) {
1029   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, nullptr, TU}};
1030   return C;
1031 }
1032 
1033 CXCursor cxcursor::MakeMacroExpansionCursor(MacroDefinitionRecord *MI,
1034                                             SourceLocation Loc,
1035                                             CXTranslationUnit TU) {
1036   assert(Loc.isValid());
1037   CXCursor C = {CXCursor_MacroExpansion, 0, {MI, Loc.getPtrEncoding(), TU}};
1038   return C;
1039 }
1040 
1041 const IdentifierInfo *cxcursor::MacroExpansionCursor::getName() const {
1042   if (isPseudo())
1043     return getAsMacroDefinition()->getName();
1044   return getAsMacroExpansion()->getName();
1045 }
1046 const MacroDefinitionRecord *
1047 cxcursor::MacroExpansionCursor::getDefinition() const {
1048   if (isPseudo())
1049     return getAsMacroDefinition();
1050   return getAsMacroExpansion()->getDefinition();
1051 }
1052 SourceRange cxcursor::MacroExpansionCursor::getSourceRange() const {
1053   if (isPseudo())
1054     return getPseudoLoc();
1055   return getAsMacroExpansion()->getSourceRange();
1056 }
1057 
1058 CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
1059                                                 CXTranslationUnit TU) {
1060   CXCursor C = {CXCursor_InclusionDirective, 0, {ID, nullptr, TU}};
1061   return C;
1062 }
1063 
1064 const InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
1065   assert(C.kind == CXCursor_InclusionDirective);
1066   return static_cast<const InclusionDirective *>(C.data[0]);
1067 }
1068 
1069 CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
1070                                       CXTranslationUnit TU) {
1071 
1072   assert(Label && TU && "Invalid arguments!");
1073   void *RawLoc = Loc.getPtrEncoding();
1074   CXCursor C = {CXCursor_LabelRef, 0, {Label, RawLoc, TU}};
1075   return C;
1076 }
1077 
1078 std::pair<const LabelStmt *, SourceLocation>
1079 cxcursor::getCursorLabelRef(CXCursor C) {
1080   assert(C.kind == CXCursor_LabelRef);
1081   return std::make_pair(static_cast<const LabelStmt *>(C.data[0]),
1082                         SourceLocation::getFromPtrEncoding(C.data[1]));
1083 }
1084 
1085 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const OverloadExpr *E,
1086                                                CXTranslationUnit TU) {
1087   assert(E && TU && "Invalid arguments!");
1088   OverloadedDeclRefStorage Storage(E);
1089   void *RawLoc = E->getNameLoc().getPtrEncoding();
1090   CXCursor C = {
1091       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1092   return C;
1093 }
1094 
1095 CXCursor cxcursor::MakeCursorOverloadedDeclRef(const Decl *D,
1096                                                SourceLocation Loc,
1097                                                CXTranslationUnit TU) {
1098   assert(D && TU && "Invalid arguments!");
1099   void *RawLoc = Loc.getPtrEncoding();
1100   OverloadedDeclRefStorage Storage(D);
1101   CXCursor C = {
1102       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1103   return C;
1104 }
1105 
1106 CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
1107                                                SourceLocation Loc,
1108                                                CXTranslationUnit TU) {
1109   assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
1110   void *RawLoc = Loc.getPtrEncoding();
1111   OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
1112   CXCursor C = {
1113       CXCursor_OverloadedDeclRef, 0, {Storage.getOpaqueValue(), RawLoc, TU}};
1114   return C;
1115 }
1116 
1117 std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
1118 cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
1119   assert(C.kind == CXCursor_OverloadedDeclRef);
1120   return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(
1121                             const_cast<void *>(C.data[0])),
1122                         SourceLocation::getFromPtrEncoding(C.data[1]));
1123 }
1124 
1125 const Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
1126   return static_cast<const Decl *>(Cursor.data[0]);
1127 }
1128 
1129 const Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
1130   return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
1131 }
1132 
1133 const Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
1134   if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
1135       Cursor.kind == CXCursor_ObjCProtocolRef ||
1136       Cursor.kind == CXCursor_ObjCClassRef)
1137     return nullptr;
1138 
1139   return static_cast<const Stmt *>(Cursor.data[1]);
1140 }
1141 
1142 const Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
1143   return static_cast<const Attr *>(Cursor.data[1]);
1144 }
1145 
1146 ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
1147   return getCursorASTUnit(Cursor)->getASTContext();
1148 }
1149 
1150 ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
1151   CXTranslationUnit TU = getCursorTU(Cursor);
1152   if (!TU)
1153     return nullptr;
1154   return cxtu::getASTUnit(TU);
1155 }
1156 
1157 CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
1158   return static_cast<CXTranslationUnit>(const_cast<void *>(Cursor.data[2]));
1159 }
1160 
1161 void cxcursor::getOverriddenCursors(CXCursor cursor,
1162                                     SmallVectorImpl<CXCursor> &overridden) {
1163   assert(clang_isDeclaration(cursor.kind));
1164   const NamedDecl *D = dyn_cast_or_null<NamedDecl>(getCursorDecl(cursor));
1165   if (!D)
1166     return;
1167 
1168   CXTranslationUnit TU = getCursorTU(cursor);
1169   SmallVector<const NamedDecl *, 8> OverDecls;
1170   D->getASTContext().getOverriddenMethods(D, OverDecls);
1171 
1172   for (SmallVectorImpl<const NamedDecl *>::iterator I = OverDecls.begin(),
1173                                                     E = OverDecls.end();
1174        I != E; ++I) {
1175     overridden.push_back(MakeCXCursor(*I, TU));
1176   }
1177 }
1178 
1179 std::pair<int, SourceLocation>
1180 cxcursor::getSelectorIdentifierIndexAndLoc(CXCursor cursor) {
1181   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1182     if (cursor.xdata != -1)
1183       return std::make_pair(cursor.xdata,
1184                             cast<ObjCMessageExpr>(getCursorExpr(cursor))
1185                                 ->getSelectorLoc(cursor.xdata));
1186   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1187              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1188     if (cursor.xdata != -1)
1189       return std::make_pair(cursor.xdata,
1190                             cast<ObjCMethodDecl>(getCursorDecl(cursor))
1191                                 ->getSelectorLoc(cursor.xdata));
1192   }
1193 
1194   return std::make_pair(-1, SourceLocation());
1195 }
1196 
1197 CXCursor cxcursor::getSelectorIdentifierCursor(int SelIdx, CXCursor cursor) {
1198   CXCursor newCursor = cursor;
1199 
1200   if (cursor.kind == CXCursor_ObjCMessageExpr) {
1201     if (SelIdx == -1 ||
1202         unsigned(SelIdx) >=
1203             cast<ObjCMessageExpr>(getCursorExpr(cursor))->getNumSelectorLocs())
1204       newCursor.xdata = -1;
1205     else
1206       newCursor.xdata = SelIdx;
1207   } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
1208              cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
1209     if (SelIdx == -1 ||
1210         unsigned(SelIdx) >=
1211             cast<ObjCMethodDecl>(getCursorDecl(cursor))->getNumSelectorLocs())
1212       newCursor.xdata = -1;
1213     else
1214       newCursor.xdata = SelIdx;
1215   }
1216 
1217   return newCursor;
1218 }
1219 
1220 CXCursor cxcursor::getTypeRefCursor(CXCursor cursor) {
1221   if (cursor.kind != CXCursor_CallExpr)
1222     return cursor;
1223 
1224   if (cursor.xdata == 0)
1225     return cursor;
1226 
1227   const Expr *E = getCursorExpr(cursor);
1228   TypeSourceInfo *Type = nullptr;
1229   if (const CXXUnresolvedConstructExpr *UnCtor =
1230           dyn_cast<CXXUnresolvedConstructExpr>(E)) {
1231     Type = UnCtor->getTypeSourceInfo();
1232   } else if (const CXXTemporaryObjectExpr *Tmp =
1233                  dyn_cast<CXXTemporaryObjectExpr>(E)) {
1234     Type = Tmp->getTypeSourceInfo();
1235   }
1236 
1237   if (!Type)
1238     return cursor;
1239 
1240   CXTranslationUnit TU = getCursorTU(cursor);
1241   QualType Ty = Type->getType();
1242   TypeLoc TL = Type->getTypeLoc();
1243   SourceLocation Loc = TL.getBeginLoc();
1244 
1245   if (const ElaboratedType *ElabT = Ty->getAs<ElaboratedType>()) {
1246     Ty = ElabT->getNamedType();
1247     ElaboratedTypeLoc ElabTL = TL.castAs<ElaboratedTypeLoc>();
1248     Loc = ElabTL.getNamedTypeLoc().getBeginLoc();
1249   }
1250 
1251   if (const TypedefType *Typedef = Ty->getAs<TypedefType>())
1252     return MakeCursorTypeRef(Typedef->getDecl(), Loc, TU);
1253   if (const TagType *Tag = Ty->getAs<TagType>())
1254     return MakeCursorTypeRef(Tag->getDecl(), Loc, TU);
1255   if (const TemplateTypeParmType *TemplP = Ty->getAs<TemplateTypeParmType>())
1256     return MakeCursorTypeRef(TemplP->getDecl(), Loc, TU);
1257 
1258   return cursor;
1259 }
1260 
1261 bool cxcursor::operator==(CXCursor X, CXCursor Y) {
1262   return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
1263          X.data[2] == Y.data[2];
1264 }
1265 
1266 // FIXME: Remove once we can model DeclGroups and their appropriate ranges
1267 // properly in the ASTs.
1268 bool cxcursor::isFirstInDeclGroup(CXCursor C) {
1269   assert(clang_isDeclaration(C.kind));
1270   return ((uintptr_t)(C.data[1])) != 0;
1271 }
1272 
1273 //===----------------------------------------------------------------------===//
1274 // libclang CXCursor APIs
1275 //===----------------------------------------------------------------------===//
1276 
1277 int clang_Cursor_isNull(CXCursor cursor) {
1278   return clang_equalCursors(cursor, clang_getNullCursor());
1279 }
1280 
1281 CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor cursor) {
1282   return getCursorTU(cursor);
1283 }
1284 
1285 int clang_Cursor_getNumArguments(CXCursor C) {
1286   if (clang_isDeclaration(C.kind)) {
1287     const Decl *D = cxcursor::getCursorDecl(C);
1288     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D))
1289       return MD->param_size();
1290     if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
1291       return FD->param_size();
1292   }
1293 
1294   if (clang_isExpression(C.kind)) {
1295     const Expr *E = cxcursor::getCursorExpr(C);
1296     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1297       return CE->getNumArgs();
1298     }
1299     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1300       return CE->getNumArgs();
1301     }
1302   }
1303 
1304   return -1;
1305 }
1306 
1307 CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i) {
1308   if (clang_isDeclaration(C.kind)) {
1309     const Decl *D = cxcursor::getCursorDecl(C);
1310     if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
1311       if (i < MD->param_size())
1312         return cxcursor::MakeCXCursor(MD->parameters()[i],
1313                                       cxcursor::getCursorTU(C));
1314     } else if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) {
1315       if (i < FD->param_size())
1316         return cxcursor::MakeCXCursor(FD->parameters()[i],
1317                                       cxcursor::getCursorTU(C));
1318     }
1319   }
1320 
1321   if (clang_isExpression(C.kind)) {
1322     const Expr *E = cxcursor::getCursorExpr(C);
1323     if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
1324       if (i < CE->getNumArgs()) {
1325         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1326                                       cxcursor::getCursorTU(C));
1327       }
1328     }
1329     if (const CXXConstructExpr *CE = dyn_cast<CXXConstructExpr>(E)) {
1330       if (i < CE->getNumArgs()) {
1331         return cxcursor::MakeCXCursor(CE->getArg(i), getCursorDecl(C),
1332                                       cxcursor::getCursorTU(C));
1333       }
1334     }
1335   }
1336 
1337   return clang_getNullCursor();
1338 }
1339 
1340 int clang_Cursor_getNumTemplateArguments(CXCursor C) {
1341   if (clang_getCursorKind(C) != CXCursor_FunctionDecl) {
1342     return -1;
1343   }
1344 
1345   const FunctionDecl *FD =
1346       llvm::dyn_cast_or_null<clang::FunctionDecl>(getCursorDecl(C));
1347   if (!FD) {
1348     return -1;
1349   }
1350 
1351   const FunctionTemplateSpecializationInfo *SpecInfo =
1352       FD->getTemplateSpecializationInfo();
1353   if (!SpecInfo) {
1354     return -1;
1355   }
1356 
1357   return SpecInfo->TemplateArguments->size();
1358 }
1359 
1360 enum CXGetTemplateArgumentStatus {
1361   /** The operation completed successfully */
1362   CXGetTemplateArgumentStatus_Success = 0,
1363 
1364   /** The specified cursor did not represent a FunctionDecl. */
1365   CXGetTemplateArgumentStatus_CursorNotFunctionDecl = -1,
1366 
1367   /** The specified cursor was not castable to a FunctionDecl. */
1368   CXGetTemplateArgumentStatus_BadFunctionDeclCast = -2,
1369 
1370   /** A NULL FunctionTemplateSpecializationInfo was retrieved. */
1371   CXGetTemplateArgumentStatus_NullTemplSpecInfo = -3,
1372 
1373   /** An invalid (OOB) argument index was specified */
1374   CXGetTemplateArgumentStatus_InvalidIndex = -4
1375 };
1376 
1377 static int clang_Cursor_getTemplateArgument(CXCursor C, unsigned I,
1378                                             TemplateArgument *TA) {
1379   if (clang_getCursorKind(C) != CXCursor_FunctionDecl) {
1380     return CXGetTemplateArgumentStatus_CursorNotFunctionDecl;
1381   }
1382 
1383   const FunctionDecl *FD =
1384       llvm::dyn_cast_or_null<clang::FunctionDecl>(getCursorDecl(C));
1385   if (!FD) {
1386     return CXGetTemplateArgumentStatus_BadFunctionDeclCast;
1387   }
1388 
1389   const FunctionTemplateSpecializationInfo *SpecInfo =
1390       FD->getTemplateSpecializationInfo();
1391   if (!SpecInfo) {
1392     return CXGetTemplateArgumentStatus_NullTemplSpecInfo;
1393   }
1394 
1395   if (I >= SpecInfo->TemplateArguments->size()) {
1396     return CXGetTemplateArgumentStatus_InvalidIndex;
1397   }
1398 
1399   *TA = SpecInfo->TemplateArguments->get(I);
1400   return 0;
1401 }
1402 
1403 enum CXTemplateArgumentKind clang_Cursor_getTemplateArgumentKind(CXCursor C,
1404                                                                  unsigned I) {
1405   TemplateArgument TA;
1406   if (clang_Cursor_getTemplateArgument(C, I, &TA)) {
1407     return CXTemplateArgumentKind_Invalid;
1408   }
1409 
1410   switch (TA.getKind()) {
1411   case TemplateArgument::Null:
1412     return CXTemplateArgumentKind_Null;
1413   case TemplateArgument::Type:
1414     return CXTemplateArgumentKind_Type;
1415   case TemplateArgument::Declaration:
1416     return CXTemplateArgumentKind_Declaration;
1417   case TemplateArgument::NullPtr:
1418     return CXTemplateArgumentKind_NullPtr;
1419   case TemplateArgument::Integral:
1420     return CXTemplateArgumentKind_Integral;
1421   case TemplateArgument::Template:
1422     return CXTemplateArgumentKind_Template;
1423   case TemplateArgument::TemplateExpansion:
1424     return CXTemplateArgumentKind_TemplateExpansion;
1425   case TemplateArgument::Expression:
1426     return CXTemplateArgumentKind_Expression;
1427   case TemplateArgument::Pack:
1428     return CXTemplateArgumentKind_Pack;
1429   }
1430 
1431   return CXTemplateArgumentKind_Invalid;
1432 }
1433 
1434 CXType clang_Cursor_getTemplateArgumentType(CXCursor C, unsigned I) {
1435   TemplateArgument TA;
1436   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1437       CXGetTemplateArgumentStatus_Success) {
1438     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1439   }
1440 
1441   if (TA.getKind() != TemplateArgument::Type) {
1442     return cxtype::MakeCXType(QualType(), getCursorTU(C));
1443   }
1444 
1445   return cxtype::MakeCXType(TA.getAsType(), getCursorTU(C));
1446 }
1447 
1448 long long clang_Cursor_getTemplateArgumentValue(CXCursor C, unsigned I) {
1449   TemplateArgument TA;
1450   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1451       CXGetTemplateArgumentStatus_Success) {
1452     assert(0 && "Unable to retrieve TemplateArgument");
1453     return 0;
1454   }
1455 
1456   if (TA.getKind() != TemplateArgument::Integral) {
1457     assert(0 && "Passed template argument is not Integral");
1458     return 0;
1459   }
1460 
1461   return TA.getAsIntegral().getSExtValue();
1462 }
1463 
1464 unsigned long long clang_Cursor_getTemplateArgumentUnsignedValue(CXCursor C,
1465                                                                  unsigned I) {
1466   TemplateArgument TA;
1467   if (clang_Cursor_getTemplateArgument(C, I, &TA) !=
1468       CXGetTemplateArgumentStatus_Success) {
1469     assert(0 && "Unable to retrieve TemplateArgument");
1470     return 0;
1471   }
1472 
1473   if (TA.getKind() != TemplateArgument::Integral) {
1474     assert(0 && "Passed template argument is not Integral");
1475     return 0;
1476   }
1477 
1478   return TA.getAsIntegral().getZExtValue();
1479 }
1480 
1481 //===----------------------------------------------------------------------===//
1482 // CXCursorSet.
1483 //===----------------------------------------------------------------------===//
1484 
1485 typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
1486 
1487 static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
1488   return (CXCursorSet)setImpl;
1489 }
1490 static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
1491   return (CXCursorSet_Impl *)set;
1492 }
1493 namespace llvm {
1494 template <> struct DenseMapInfo<CXCursor> {
1495 public:
1496   static inline CXCursor getEmptyKey() {
1497     return MakeCXCursorInvalid(CXCursor_InvalidFile);
1498   }
1499   static inline CXCursor getTombstoneKey() {
1500     return MakeCXCursorInvalid(CXCursor_NoDeclFound);
1501   }
1502   static inline unsigned getHashValue(const CXCursor &cursor) {
1503     return llvm::DenseMapInfo<std::pair<const void *, const void *>>::
1504         getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
1505   }
1506   static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
1507     return x.kind == y.kind && x.data[0] == y.data[0] && x.data[1] == y.data[1];
1508   }
1509 };
1510 } // namespace llvm
1511 
1512 CXCursorSet clang_createCXCursorSet() {
1513   return packCXCursorSet(new CXCursorSet_Impl());
1514 }
1515 
1516 void clang_disposeCXCursorSet(CXCursorSet set) {
1517   delete unpackCXCursorSet(set);
1518 }
1519 
1520 unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
1521   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1522   if (!setImpl)
1523     return 0;
1524   return setImpl->find(cursor) != setImpl->end();
1525 }
1526 
1527 unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
1528   // Do not insert invalid cursors into the set.
1529   if (cursor.kind >= CXCursor_FirstInvalid &&
1530       cursor.kind <= CXCursor_LastInvalid)
1531     return 1;
1532 
1533   CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1534   if (!setImpl)
1535     return 1;
1536   unsigned &entry = (*setImpl)[cursor];
1537   unsigned flag = entry == 0 ? 1 : 0;
1538   entry = 1;
1539   return flag;
1540 }
1541 
1542 CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
1543   enum CXCursorKind kind = clang_getCursorKind(cursor);
1544   if (clang_isDeclaration(kind)) {
1545     const Decl *decl = getCursorDecl(cursor);
1546     if (const NamedDecl *namedDecl = dyn_cast_or_null<NamedDecl>(decl)) {
1547       ASTUnit *unit = getCursorASTUnit(cursor);
1548       CodeCompletionResult Result(namedDecl, CCP_Declaration);
1549       CodeCompletionString *String = Result.CreateCodeCompletionString(
1550           unit->getASTContext(), unit->getPreprocessor(),
1551           CodeCompletionContext::CCC_Other,
1552           unit->getCodeCompletionTUInfo().getAllocator(),
1553           unit->getCodeCompletionTUInfo(), true);
1554       return String;
1555     }
1556   } else if (kind == CXCursor_MacroDefinition) {
1557     const MacroDefinitionRecord *definition = getCursorMacroDefinition(cursor);
1558     const IdentifierInfo *Macro = definition->getName();
1559     ASTUnit *unit = getCursorASTUnit(cursor);
1560     CodeCompletionResult Result(
1561         Macro,
1562         unit->getPreprocessor().getMacroDefinition(Macro).getMacroInfo());
1563     CodeCompletionString *String = Result.CreateCodeCompletionString(
1564         unit->getASTContext(), unit->getPreprocessor(),
1565         CodeCompletionContext::CCC_Other,
1566         unit->getCodeCompletionTUInfo().getAllocator(),
1567         unit->getCodeCompletionTUInfo(), false);
1568     return String;
1569   }
1570   return nullptr;
1571 }
1572 
1573 namespace {
1574 struct OverridenCursorsPool {
1575   typedef SmallVector<CXCursor, 2> CursorVec;
1576   std::vector<CursorVec *> AllCursors;
1577   std::vector<CursorVec *> AvailableCursors;
1578 
1579   ~OverridenCursorsPool() {
1580     for (std::vector<CursorVec *>::iterator I = AllCursors.begin(),
1581                                             E = AllCursors.end();
1582          I != E; ++I) {
1583       delete *I;
1584     }
1585   }
1586 };
1587 } // namespace
1588 
1589 void *cxcursor::createOverridenCXCursorsPool() {
1590   return new OverridenCursorsPool();
1591 }
1592 
1593 void cxcursor::disposeOverridenCXCursorsPool(void *pool) {
1594   delete static_cast<OverridenCursorsPool *>(pool);
1595 }
1596 
1597 void clang_getOverriddenCursors(CXCursor cursor, CXCursor **overridden,
1598                                 unsigned *num_overridden) {
1599   if (overridden)
1600     *overridden = nullptr;
1601   if (num_overridden)
1602     *num_overridden = 0;
1603 
1604   CXTranslationUnit TU = cxcursor::getCursorTU(cursor);
1605 
1606   if (!overridden || !num_overridden || !TU)
1607     return;
1608 
1609   if (!clang_isDeclaration(cursor.kind))
1610     return;
1611 
1612   OverridenCursorsPool &pool =
1613       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1614 
1615   OverridenCursorsPool::CursorVec *Vec = nullptr;
1616 
1617   if (!pool.AvailableCursors.empty()) {
1618     Vec = pool.AvailableCursors.back();
1619     pool.AvailableCursors.pop_back();
1620   } else {
1621     Vec = new OverridenCursorsPool::CursorVec();
1622     pool.AllCursors.push_back(Vec);
1623   }
1624 
1625   // Clear out the vector, but don't free the memory contents.  This
1626   // reduces malloc() traffic.
1627   Vec->clear();
1628 
1629   // Use the first entry to contain a back reference to the vector.
1630   // This is a complete hack.
1631   CXCursor backRefCursor = MakeCXCursorInvalid(CXCursor_InvalidFile, TU);
1632   backRefCursor.data[0] = Vec;
1633   assert(cxcursor::getCursorTU(backRefCursor) == TU);
1634   Vec->push_back(backRefCursor);
1635 
1636   // Get the overridden cursors.
1637   cxcursor::getOverriddenCursors(cursor, *Vec);
1638 
1639   // Did we get any overridden cursors?  If not, return Vec to the pool
1640   // of available cursor vectors.
1641   if (Vec->size() == 1) {
1642     pool.AvailableCursors.push_back(Vec);
1643     return;
1644   }
1645 
1646   // Now tell the caller about the overridden cursors.
1647   assert(Vec->size() > 1);
1648   *overridden = &((*Vec)[1]);
1649   *num_overridden = Vec->size() - 1;
1650 }
1651 
1652 void clang_disposeOverriddenCursors(CXCursor *overridden) {
1653   if (!overridden)
1654     return;
1655 
1656   // Use pointer arithmetic to get back the first faux entry
1657   // which has a back-reference to the TU and the vector.
1658   --overridden;
1659   OverridenCursorsPool::CursorVec *Vec =
1660       static_cast<OverridenCursorsPool::CursorVec *>(
1661           const_cast<void *>(overridden->data[0]));
1662   CXTranslationUnit TU = getCursorTU(*overridden);
1663 
1664   assert(Vec && TU);
1665 
1666   OverridenCursorsPool &pool =
1667       *static_cast<OverridenCursorsPool *>(TU->OverridenCursorsPool);
1668 
1669   pool.AvailableCursors.push_back(Vec);
1670 }
1671 
1672 int clang_Cursor_isDynamicCall(CXCursor C) {
1673   const Expr *E = nullptr;
1674   if (clang_isExpression(C.kind))
1675     E = getCursorExpr(C);
1676   if (!E)
1677     return 0;
1678 
1679   if (const ObjCMessageExpr *MsgE = dyn_cast<ObjCMessageExpr>(E)) {
1680     if (MsgE->getReceiverKind() != ObjCMessageExpr::Instance)
1681       return false;
1682     if (auto *RecE = dyn_cast<ObjCMessageExpr>(
1683             MsgE->getInstanceReceiver()->IgnoreParenCasts())) {
1684       if (RecE->getMethodFamily() == OMF_alloc)
1685         return false;
1686     }
1687     return true;
1688   }
1689 
1690   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1691     return !PropRefE->isSuperReceiver();
1692   }
1693 
1694   const MemberExpr *ME = nullptr;
1695   if (isa<MemberExpr>(E))
1696     ME = cast<MemberExpr>(E);
1697   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1698     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1699 
1700   if (ME) {
1701     if (const CXXMethodDecl *MD =
1702             dyn_cast_or_null<CXXMethodDecl>(ME->getMemberDecl()))
1703       return MD->isVirtual() &&
1704              ME->performsVirtualDispatch(
1705                  cxcursor::getCursorContext(C).getLangOpts());
1706   }
1707 
1708   return 0;
1709 }
1710 
1711 CXType clang_Cursor_getReceiverType(CXCursor C) {
1712   CXTranslationUnit TU = cxcursor::getCursorTU(C);
1713   const Expr *E = nullptr;
1714   if (clang_isExpression(C.kind))
1715     E = getCursorExpr(C);
1716 
1717   if (const ObjCMessageExpr *MsgE = dyn_cast_or_null<ObjCMessageExpr>(E))
1718     return cxtype::MakeCXType(MsgE->getReceiverType(), TU);
1719 
1720   if (auto *PropRefE = dyn_cast<ObjCPropertyRefExpr>(E)) {
1721     return cxtype::MakeCXType(
1722         PropRefE->getReceiverType(cxcursor::getCursorContext(C)), TU);
1723   }
1724 
1725   const MemberExpr *ME = nullptr;
1726   if (isa<MemberExpr>(E))
1727     ME = cast<MemberExpr>(E);
1728   else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1729     ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1730 
1731   if (ME) {
1732     if (isa_and_nonnull<CXXMethodDecl>(ME->getMemberDecl())) {
1733       auto receiverTy = ME->getBase()->IgnoreImpCasts()->getType();
1734       return cxtype::MakeCXType(receiverTy, TU);
1735     }
1736   }
1737 
1738   return cxtype::MakeCXType(QualType(), TU);
1739 }
1740