CXCursor.cpp revision 414a1bdbdaf250e0488589f12865c8961831b65d 
1//===- CXCursor.cpp - Routines for manipulating CXCursors -----------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines routines for manipulating CXCursors. It should be the
11// only file that has internal knowledge of the encoding of the data in
12// CXCursor.
13//
14//===----------------------------------------------------------------------===//
15
16#include "CXTranslationUnit.h"
17#include "CXCursor.h"
18#include "CXString.h"
19#include "CXType.h"
20#include "clang-c/Index.h"
21#include "clang/AST/Attr.h"
22#include "clang/AST/Decl.h"
23#include "clang/AST/DeclCXX.h"
24#include "clang/AST/DeclObjC.h"
25#include "clang/AST/DeclTemplate.h"
26#include "clang/AST/Expr.h"
27#include "clang/AST/ExprCXX.h"
28#include "clang/AST/ExprObjC.h"
29#include "clang/Frontend/ASTUnit.h"
30#include "llvm/Support/ErrorHandling.h"
31
32using namespace clang;
33using namespace cxcursor;
34
35CXCursor cxcursor::MakeCXCursorInvalid(CXCursorKind K, CXTranslationUnit TU) {
36  assert(K >= CXCursor_FirstInvalid && K <= CXCursor_LastInvalid);
37  CXCursor C = { K, 0, { 0, 0, TU } };
38  return C;
39}
40
41static CXCursorKind GetCursorKind(const Attr *A) {
42  assert(A && "Invalid arguments!");
43  switch (A->getKind()) {
44    default: break;
45    case attr::IBAction: return CXCursor_IBActionAttr;
46    case attr::IBOutlet: return CXCursor_IBOutletAttr;
47    case attr::IBOutletCollection: return CXCursor_IBOutletCollectionAttr;
48    case attr::Final: return CXCursor_CXXFinalAttr;
49    case attr::Override: return CXCursor_CXXOverrideAttr;
50    case attr::Annotate: return CXCursor_AnnotateAttr;
51    case attr::AsmLabel: return CXCursor_AsmLabelAttr;
52  }
53
54  return CXCursor_UnexposedAttr;
55}
56
57CXCursor cxcursor::MakeCXCursor(const Attr *A, const Decl *Parent,
58                                CXTranslationUnit TU) {
59  assert(A && Parent && TU && "Invalid arguments!");
60  CXCursor C = { GetCursorKind(A), 0, { Parent, A, TU } };
61  return C;
62}
63
64CXCursor cxcursor::MakeCXCursor(const Decl *D, CXTranslationUnit TU,
65                                SourceRange RegionOfInterest,
66                                bool FirstInDeclGroup) {
67  assert(D && TU && "Invalid arguments!");
68
69  CXCursorKind K = getCursorKindForDecl(D);
70
71  if (K == CXCursor_ObjCClassMethodDecl ||
72      K == CXCursor_ObjCInstanceMethodDecl) {
73    int SelectorIdIndex = -1;
74    // Check if cursor points to a selector id.
75    if (RegionOfInterest.isValid() &&
76        RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
77      SmallVector<SourceLocation, 16> SelLocs;
78      cast<ObjCMethodDecl>(D)->getSelectorLocs(SelLocs);
79      SmallVectorImpl<SourceLocation>::iterator
80        I=std::find(SelLocs.begin(), SelLocs.end(),RegionOfInterest.getBegin());
81      if (I != SelLocs.end())
82        SelectorIdIndex = I - SelLocs.begin();
83    }
84    CXCursor C = { K, SelectorIdIndex,
85                   { D, (void*)(intptr_t) (FirstInDeclGroup ? 1 : 0), TU }};
86    return C;
87  }
88
89  CXCursor C = { K, 0, { D, (void*)(intptr_t) (FirstInDeclGroup ? 1 : 0), TU }};
90  return C;
91}
92
93CXCursor cxcursor::MakeCXCursor(const Stmt *S, const Decl *Parent,
94                                CXTranslationUnit TU,
95                                SourceRange RegionOfInterest) {
96  assert(S && TU && "Invalid arguments!");
97  CXCursorKind K = CXCursor_NotImplemented;
98
99  switch (S->getStmtClass()) {
100  case Stmt::NoStmtClass:
101    break;
102
103  case Stmt::CaseStmtClass:
104    K = CXCursor_CaseStmt;
105    break;
106
107  case Stmt::DefaultStmtClass:
108    K = CXCursor_DefaultStmt;
109    break;
110
111  case Stmt::IfStmtClass:
112    K = CXCursor_IfStmt;
113    break;
114
115  case Stmt::SwitchStmtClass:
116    K = CXCursor_SwitchStmt;
117    break;
118
119  case Stmt::WhileStmtClass:
120    K = CXCursor_WhileStmt;
121    break;
122
123  case Stmt::DoStmtClass:
124    K = CXCursor_DoStmt;
125    break;
126
127  case Stmt::ForStmtClass:
128    K = CXCursor_ForStmt;
129    break;
130
131  case Stmt::GotoStmtClass:
132    K = CXCursor_GotoStmt;
133    break;
134
135  case Stmt::IndirectGotoStmtClass:
136    K = CXCursor_IndirectGotoStmt;
137    break;
138
139  case Stmt::ContinueStmtClass:
140    K = CXCursor_ContinueStmt;
141    break;
142
143  case Stmt::BreakStmtClass:
144    K = CXCursor_BreakStmt;
145    break;
146
147  case Stmt::ReturnStmtClass:
148    K = CXCursor_ReturnStmt;
149    break;
150
151  case Stmt::GCCAsmStmtClass:
152    K = CXCursor_GCCAsmStmt;
153    break;
154
155  case Stmt::MSAsmStmtClass:
156    K = CXCursor_MSAsmStmt;
157    break;
158
159  case Stmt::ObjCAtTryStmtClass:
160    K = CXCursor_ObjCAtTryStmt;
161    break;
162
163  case Stmt::ObjCAtCatchStmtClass:
164    K = CXCursor_ObjCAtCatchStmt;
165    break;
166
167  case Stmt::ObjCAtFinallyStmtClass:
168    K = CXCursor_ObjCAtFinallyStmt;
169    break;
170
171  case Stmt::ObjCAtThrowStmtClass:
172    K = CXCursor_ObjCAtThrowStmt;
173    break;
174
175  case Stmt::ObjCAtSynchronizedStmtClass:
176    K = CXCursor_ObjCAtSynchronizedStmt;
177    break;
178
179  case Stmt::ObjCAutoreleasePoolStmtClass:
180    K = CXCursor_ObjCAutoreleasePoolStmt;
181    break;
182
183  case Stmt::ObjCForCollectionStmtClass:
184    K = CXCursor_ObjCForCollectionStmt;
185    break;
186
187  case Stmt::CXXCatchStmtClass:
188    K = CXCursor_CXXCatchStmt;
189    break;
190
191  case Stmt::CXXTryStmtClass:
192    K = CXCursor_CXXTryStmt;
193    break;
194
195  case Stmt::CXXForRangeStmtClass:
196    K = CXCursor_CXXForRangeStmt;
197    break;
198
199  case Stmt::SEHTryStmtClass:
200    K = CXCursor_SEHTryStmt;
201    break;
202
203  case Stmt::SEHExceptStmtClass:
204    K = CXCursor_SEHExceptStmt;
205    break;
206
207  case Stmt::SEHFinallyStmtClass:
208    K = CXCursor_SEHFinallyStmt;
209    break;
210
211  case Stmt::ArrayTypeTraitExprClass:
212  case Stmt::AsTypeExprClass:
213  case Stmt::AtomicExprClass:
214  case Stmt::BinaryConditionalOperatorClass:
215  case Stmt::BinaryTypeTraitExprClass:
216  case Stmt::TypeTraitExprClass:
217  case Stmt::CXXBindTemporaryExprClass:
218  case Stmt::CXXDefaultArgExprClass:
219  case Stmt::CXXDefaultInitExprClass:
220  case Stmt::CXXStdInitializerListExprClass:
221  case Stmt::CXXScalarValueInitExprClass:
222  case Stmt::CXXUuidofExprClass:
223  case Stmt::ChooseExprClass:
224  case Stmt::DesignatedInitExprClass:
225  case Stmt::ExprWithCleanupsClass:
226  case Stmt::ExpressionTraitExprClass:
227  case Stmt::ExtVectorElementExprClass:
228  case Stmt::ImplicitCastExprClass:
229  case Stmt::ImplicitValueInitExprClass:
230  case Stmt::MaterializeTemporaryExprClass:
231  case Stmt::ObjCIndirectCopyRestoreExprClass:
232  case Stmt::OffsetOfExprClass:
233  case Stmt::ParenListExprClass:
234  case Stmt::PredefinedExprClass:
235  case Stmt::ShuffleVectorExprClass:
236  case Stmt::ConvertVectorExprClass:
237  case Stmt::UnaryExprOrTypeTraitExprClass:
238  case Stmt::UnaryTypeTraitExprClass:
239  case Stmt::VAArgExprClass:
240  case Stmt::ObjCArrayLiteralClass:
241  case Stmt::ObjCDictionaryLiteralClass:
242  case Stmt::ObjCBoxedExprClass:
243  case Stmt::ObjCSubscriptRefExprClass:
244    K = CXCursor_UnexposedExpr;
245    break;
246
247  case Stmt::OpaqueValueExprClass:
248    if (Expr *Src = cast<OpaqueValueExpr>(S)->getSourceExpr())
249      return MakeCXCursor(Src, Parent, TU, RegionOfInterest);
250    K = CXCursor_UnexposedExpr;
251    break;
252
253  case Stmt::PseudoObjectExprClass:
254    return MakeCXCursor(cast<PseudoObjectExpr>(S)->getSyntacticForm(),
255                        Parent, TU, RegionOfInterest);
256
257  case Stmt::CompoundStmtClass:
258    K = CXCursor_CompoundStmt;
259    break;
260
261  case Stmt::NullStmtClass:
262    K = CXCursor_NullStmt;
263    break;
264
265  case Stmt::LabelStmtClass:
266    K = CXCursor_LabelStmt;
267    break;
268
269  case Stmt::AttributedStmtClass:
270    K = CXCursor_UnexposedStmt;
271    break;
272
273  case Stmt::DeclStmtClass:
274    K = CXCursor_DeclStmt;
275    break;
276
277  case Stmt::CapturedStmtClass:
278    K = CXCursor_UnexposedStmt;
279    break;
280
281  case Stmt::IntegerLiteralClass:
282    K = CXCursor_IntegerLiteral;
283    break;
284
285  case Stmt::FloatingLiteralClass:
286    K = CXCursor_FloatingLiteral;
287    break;
288
289  case Stmt::ImaginaryLiteralClass:
290    K = CXCursor_ImaginaryLiteral;
291    break;
292
293  case Stmt::StringLiteralClass:
294    K = CXCursor_StringLiteral;
295    break;
296
297  case Stmt::CharacterLiteralClass:
298    K = CXCursor_CharacterLiteral;
299    break;
300
301  case Stmt::ParenExprClass:
302    K = CXCursor_ParenExpr;
303    break;
304
305  case Stmt::UnaryOperatorClass:
306    K = CXCursor_UnaryOperator;
307    break;
308
309  case Stmt::CXXNoexceptExprClass:
310    K = CXCursor_UnaryExpr;
311    break;
312
313  case Stmt::ArraySubscriptExprClass:
314    K = CXCursor_ArraySubscriptExpr;
315    break;
316
317  case Stmt::BinaryOperatorClass:
318    K = CXCursor_BinaryOperator;
319    break;
320
321  case Stmt::CompoundAssignOperatorClass:
322    K = CXCursor_CompoundAssignOperator;
323    break;
324
325  case Stmt::ConditionalOperatorClass:
326    K = CXCursor_ConditionalOperator;
327    break;
328
329  case Stmt::CStyleCastExprClass:
330    K = CXCursor_CStyleCastExpr;
331    break;
332
333  case Stmt::CompoundLiteralExprClass:
334    K = CXCursor_CompoundLiteralExpr;
335    break;
336
337  case Stmt::InitListExprClass:
338    K = CXCursor_InitListExpr;
339    break;
340
341  case Stmt::AddrLabelExprClass:
342    K = CXCursor_AddrLabelExpr;
343    break;
344
345  case Stmt::StmtExprClass:
346    K = CXCursor_StmtExpr;
347    break;
348
349  case Stmt::GenericSelectionExprClass:
350    K = CXCursor_GenericSelectionExpr;
351    break;
352
353  case Stmt::GNUNullExprClass:
354    K = CXCursor_GNUNullExpr;
355    break;
356
357  case Stmt::CXXStaticCastExprClass:
358    K = CXCursor_CXXStaticCastExpr;
359    break;
360
361  case Stmt::CXXDynamicCastExprClass:
362    K = CXCursor_CXXDynamicCastExpr;
363    break;
364
365  case Stmt::CXXReinterpretCastExprClass:
366    K = CXCursor_CXXReinterpretCastExpr;
367    break;
368
369  case Stmt::CXXConstCastExprClass:
370    K = CXCursor_CXXConstCastExpr;
371    break;
372
373  case Stmt::CXXFunctionalCastExprClass:
374    K = CXCursor_CXXFunctionalCastExpr;
375    break;
376
377  case Stmt::CXXTypeidExprClass:
378    K = CXCursor_CXXTypeidExpr;
379    break;
380
381  case Stmt::CXXBoolLiteralExprClass:
382    K = CXCursor_CXXBoolLiteralExpr;
383    break;
384
385  case Stmt::CXXNullPtrLiteralExprClass:
386    K = CXCursor_CXXNullPtrLiteralExpr;
387    break;
388
389  case Stmt::CXXThisExprClass:
390    K = CXCursor_CXXThisExpr;
391    break;
392
393  case Stmt::CXXThrowExprClass:
394    K = CXCursor_CXXThrowExpr;
395    break;
396
397  case Stmt::CXXNewExprClass:
398    K = CXCursor_CXXNewExpr;
399    break;
400
401  case Stmt::CXXDeleteExprClass:
402    K = CXCursor_CXXDeleteExpr;
403    break;
404
405  case Stmt::ObjCStringLiteralClass:
406    K = CXCursor_ObjCStringLiteral;
407    break;
408
409  case Stmt::ObjCEncodeExprClass:
410    K = CXCursor_ObjCEncodeExpr;
411    break;
412
413  case Stmt::ObjCSelectorExprClass:
414    K = CXCursor_ObjCSelectorExpr;
415    break;
416
417  case Stmt::ObjCProtocolExprClass:
418    K = CXCursor_ObjCProtocolExpr;
419    break;
420
421  case Stmt::ObjCBoolLiteralExprClass:
422    K = CXCursor_ObjCBoolLiteralExpr;
423    break;
424
425  case Stmt::ObjCBridgedCastExprClass:
426    K = CXCursor_ObjCBridgedCastExpr;
427    break;
428
429  case Stmt::BlockExprClass:
430    K = CXCursor_BlockExpr;
431    break;
432
433  case Stmt::PackExpansionExprClass:
434    K = CXCursor_PackExpansionExpr;
435    break;
436
437  case Stmt::SizeOfPackExprClass:
438    K = CXCursor_SizeOfPackExpr;
439    break;
440
441  case Stmt::DeclRefExprClass:
442    if (const ImplicitParamDecl *IPD =
443         dyn_cast_or_null<ImplicitParamDecl>(cast<DeclRefExpr>(S)->getDecl())) {
444      if (const ObjCMethodDecl *MD =
445            dyn_cast<ObjCMethodDecl>(IPD->getDeclContext())) {
446        if (MD->getSelfDecl() == IPD) {
447          K = CXCursor_ObjCSelfExpr;
448          break;
449        }
450      }
451    }
452
453    K = CXCursor_DeclRefExpr;
454    break;
455
456  case Stmt::DependentScopeDeclRefExprClass:
457  case Stmt::SubstNonTypeTemplateParmExprClass:
458  case Stmt::SubstNonTypeTemplateParmPackExprClass:
459  case Stmt::FunctionParmPackExprClass:
460  case Stmt::UnresolvedLookupExprClass:
461    K = CXCursor_DeclRefExpr;
462    break;
463
464  case Stmt::CXXDependentScopeMemberExprClass:
465  case Stmt::CXXPseudoDestructorExprClass:
466  case Stmt::MemberExprClass:
467  case Stmt::MSPropertyRefExprClass:
468  case Stmt::ObjCIsaExprClass:
469  case Stmt::ObjCIvarRefExprClass:
470  case Stmt::ObjCPropertyRefExprClass:
471  case Stmt::UnresolvedMemberExprClass:
472    K = CXCursor_MemberRefExpr;
473    break;
474
475  case Stmt::CallExprClass:
476  case Stmt::CXXOperatorCallExprClass:
477  case Stmt::CXXMemberCallExprClass:
478  case Stmt::CUDAKernelCallExprClass:
479  case Stmt::CXXConstructExprClass:
480  case Stmt::CXXTemporaryObjectExprClass:
481  case Stmt::CXXUnresolvedConstructExprClass:
482  case Stmt::UserDefinedLiteralClass:
483    K = CXCursor_CallExpr;
484    break;
485
486  case Stmt::LambdaExprClass:
487    K = CXCursor_LambdaExpr;
488    break;
489
490  case Stmt::ObjCMessageExprClass: {
491    K = CXCursor_ObjCMessageExpr;
492    int SelectorIdIndex = -1;
493    // Check if cursor points to a selector id.
494    if (RegionOfInterest.isValid() &&
495        RegionOfInterest.getBegin() == RegionOfInterest.getEnd()) {
496      SmallVector<SourceLocation, 16> SelLocs;
497      cast<ObjCMessageExpr>(S)->getSelectorLocs(SelLocs);
498      SmallVectorImpl<SourceLocation>::iterator
499        I=std::find(SelLocs.begin(), SelLocs.end(),RegionOfInterest.getBegin());
500      if (I != SelLocs.end())
501        SelectorIdIndex = I - SelLocs.begin();
502    }
503    CXCursor C = { K, 0, { Parent, S, TU } };
504    return getSelectorIdentifierCursor(SelectorIdIndex, C);
505  }
506
507  case Stmt::MSDependentExistsStmtClass:
508    K = CXCursor_UnexposedStmt;
509    break;
510  case Stmt::OMPParallelDirectiveClass:
511    K = CXCursor_OMPParallelDirective;
512    break;
513
514  }
515
516  CXCursor C = { K, 0, { Parent, S, TU } };
517  return C;
518}
519
520CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
521                                               SourceLocation Loc,
522                                               CXTranslationUnit TU) {
523  assert(Super && TU && "Invalid arguments!");
524  void *RawLoc = Loc.getPtrEncoding();
525  CXCursor C = { CXCursor_ObjCSuperClassRef, 0, { Super, RawLoc, TU } };
526  return C;
527}
528
529std::pair<const ObjCInterfaceDecl *, SourceLocation>
530cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
531  assert(C.kind == CXCursor_ObjCSuperClassRef);
532  return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
533                        SourceLocation::getFromPtrEncoding(C.data[1]));
534}
535
536CXCursor cxcursor::MakeCursorObjCProtocolRef(const ObjCProtocolDecl *Proto,
537                                             SourceLocation Loc,
538                                             CXTranslationUnit TU) {
539  assert(Proto && TU && "Invalid arguments!");
540  void *RawLoc = Loc.getPtrEncoding();
541  CXCursor C = { CXCursor_ObjCProtocolRef, 0, { Proto, RawLoc, TU } };
542  return C;
543}
544
545std::pair<const ObjCProtocolDecl *, SourceLocation>
546cxcursor::getCursorObjCProtocolRef(CXCursor C) {
547  assert(C.kind == CXCursor_ObjCProtocolRef);
548  return std::make_pair(static_cast<const ObjCProtocolDecl *>(C.data[0]),
549                        SourceLocation::getFromPtrEncoding(C.data[1]));
550}
551
552CXCursor cxcursor::MakeCursorObjCClassRef(const ObjCInterfaceDecl *Class,
553                                          SourceLocation Loc,
554                                          CXTranslationUnit TU) {
555  // 'Class' can be null for invalid code.
556  if (!Class)
557    return MakeCXCursorInvalid(CXCursor_InvalidCode);
558  assert(TU && "Invalid arguments!");
559  void *RawLoc = Loc.getPtrEncoding();
560  CXCursor C = { CXCursor_ObjCClassRef, 0, { Class, RawLoc, TU } };
561  return C;
562}
563
564std::pair<const ObjCInterfaceDecl *, SourceLocation>
565cxcursor::getCursorObjCClassRef(CXCursor C) {
566  assert(C.kind == CXCursor_ObjCClassRef);
567  return std::make_pair(static_cast<const ObjCInterfaceDecl *>(C.data[0]),
568                        SourceLocation::getFromPtrEncoding(C.data[1]));
569}
570
571CXCursor cxcursor::MakeCursorTypeRef(const TypeDecl *Type, SourceLocation Loc,
572                                     CXTranslationUnit TU) {
573  assert(Type && TU && "Invalid arguments!");
574  void *RawLoc = Loc.getPtrEncoding();
575  CXCursor C = { CXCursor_TypeRef, 0, { Type, RawLoc, TU } };
576  return C;
577}
578
579std::pair<const TypeDecl *, SourceLocation>
580cxcursor::getCursorTypeRef(CXCursor C) {
581  assert(C.kind == CXCursor_TypeRef);
582  return std::make_pair(static_cast<const TypeDecl *>(C.data[0]),
583                        SourceLocation::getFromPtrEncoding(C.data[1]));
584}
585
586CXCursor cxcursor::MakeCursorTemplateRef(const TemplateDecl *Template,
587                                         SourceLocation Loc,
588                                         CXTranslationUnit TU) {
589  assert(Template && TU && "Invalid arguments!");
590  void *RawLoc = Loc.getPtrEncoding();
591  CXCursor C = { CXCursor_TemplateRef, 0, { Template, RawLoc, TU } };
592  return C;
593}
594
595std::pair<const TemplateDecl *, SourceLocation>
596cxcursor::getCursorTemplateRef(CXCursor C) {
597  assert(C.kind == CXCursor_TemplateRef);
598  return std::make_pair(static_cast<const TemplateDecl *>(C.data[0]),
599                        SourceLocation::getFromPtrEncoding(C.data[1]));
600}
601
602CXCursor cxcursor::MakeCursorNamespaceRef(const NamedDecl *NS,
603                                          SourceLocation Loc,
604                                          CXTranslationUnit TU) {
605
606  assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
607         "Invalid arguments!");
608  void *RawLoc = Loc.getPtrEncoding();
609  CXCursor C = { CXCursor_NamespaceRef, 0, { NS, RawLoc, TU } };
610  return C;
611}
612
613std::pair<const NamedDecl *, SourceLocation>
614cxcursor::getCursorNamespaceRef(CXCursor C) {
615  assert(C.kind == CXCursor_NamespaceRef);
616  return std::make_pair(static_cast<const NamedDecl *>(C.data[0]),
617                        SourceLocation::getFromPtrEncoding(C.data[1]));
618}
619
620CXCursor cxcursor::MakeCursorVariableRef(const VarDecl *Var, SourceLocation Loc,
621                                         CXTranslationUnit TU) {
622
623  assert(Var && TU && "Invalid arguments!");
624  void *RawLoc = Loc.getPtrEncoding();
625  CXCursor C = { CXCursor_VariableRef, 0, { Var, RawLoc, TU } };
626  return C;
627}
628
629std::pair<const VarDecl *, SourceLocation>
630cxcursor::getCursorVariableRef(CXCursor C) {
631  assert(C.kind == CXCursor_VariableRef);
632  return std::make_pair(static_cast<const VarDecl *>(C.data[0]),
633                        SourceLocation::getFromPtrEncoding(C.data[1]));
634}
635
636CXCursor cxcursor::MakeCursorMemberRef(const FieldDecl *Field, SourceLocation Loc,
637                                       CXTranslationUnit TU) {
638
639  assert(Field && TU && "Invalid arguments!");
640  void *RawLoc = Loc.getPtrEncoding();
641  CXCursor C = { CXCursor_MemberRef, 0, { Field, RawLoc, TU } };
642  return C;
643}
644
645std::pair<const FieldDecl *, SourceLocation>
646cxcursor::getCursorMemberRef(CXCursor C) {
647  assert(C.kind == CXCursor_MemberRef);
648  return std::make_pair(static_cast<const FieldDecl *>(C.data[0]),
649                        SourceLocation::getFromPtrEncoding(C.data[1]));
650}
651
652CXCursor cxcursor::MakeCursorCXXBaseSpecifier(const CXXBaseSpecifier *B,
653                                              CXTranslationUnit TU){
654  CXCursor C = { CXCursor_CXXBaseSpecifier, 0, { B, 0, TU } };
655  return C;
656}
657
658const CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
659  assert(C.kind == CXCursor_CXXBaseSpecifier);
660  return static_cast<const CXXBaseSpecifier*>(C.data[0]);
661}
662
663CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
664                                                    CXTranslationUnit TU) {
665  CXCursor C = { CXCursor_PreprocessingDirective, 0,
666                 { Range.getBegin().getPtrEncoding(),
667                   Range.getEnd().getPtrEncoding(),
668                   TU }
669               };
670  return C;
671}
672
673SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
674  assert(C.kind == CXCursor_PreprocessingDirective);
675  SourceRange Range(SourceLocation::getFromPtrEncoding(C.data[0]),
676                    SourceLocation::getFromPtrEncoding(C.data[1]));
677  ASTUnit *TU = getCursorASTUnit(C);
678  return TU->mapRangeFromPreamble(Range);
679}
680
681CXCursor cxcursor::MakeMacroDefinitionCursor(const MacroDefinition *MI,
682                                             CXTranslationUnit TU) {
683  CXCursor C = { CXCursor_MacroDefinition, 0, { MI, 0, TU } };
684  return C;
685}
686
687const MacroDefinition *cxcursor::getCursorMacroDefinition(CXCursor C) {
688  assert(C.kind == CXCursor_MacroDefinition);
689  return static_cast<const MacroDefinition *>(C.data[0]);
690}
691
692CXCursor cxcursor::MakeMacroExpansionCursor(MacroExpansion *MI,
693                                            CXTranslationUnit TU) {
694  CXCursor C = { CXCursor_MacroExpansion, 0, { MI, 0, TU } };
695  return C;
696}
697
698CXCursor cxcursor::MakeMacroExpansionCursor(MacroDefinition *MI,
699                                            SourceLocation Loc,
700                                            CXTranslationUnit TU) {
701  assert(Loc.isValid());
702  CXCursor C = { CXCursor_MacroExpansion, 0, { MI, Loc.getPtrEncoding(), TU } };
703  return C;
704}
705
706const IdentifierInfo *cxcursor::MacroExpansionCursor::getName() const {
707  if (isPseudo())
708    return getAsMacroDefinition()->getName();
709  return getAsMacroExpansion()->getName();
710}
711const MacroDefinition *cxcursor::MacroExpansionCursor::getDefinition() const {
712  if (isPseudo())
713    return getAsMacroDefinition();
714  return getAsMacroExpansion()->getDefinition();
715}
716SourceRange cxcursor::MacroExpansionCursor::getSourceRange() const {
717  if (isPseudo())
718    return getPseudoLoc();
719  return getAsMacroExpansion()->getSourceRange();
720}
721
722CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
723                                                CXTranslationUnit TU) {
724  CXCursor C = { CXCursor_InclusionDirective, 0, { ID, 0, TU } };
725  return C;
726}
727
728const InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
729  assert(C.kind == CXCursor_InclusionDirective);
730  return static_cast<const InclusionDirective *>(C.data[0]);
731}
732
733CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
734                                      CXTranslationUnit TU) {
735
736  assert(Label && TU && "Invalid arguments!");
737  void *RawLoc = Loc.getPtrEncoding();
738  CXCursor C = { CXCursor_LabelRef, 0, { Label, RawLoc, TU } };
739  return C;
740}
741
742std::pair<const LabelStmt *, SourceLocation>
743cxcursor::getCursorLabelRef(CXCursor C) {
744  assert(C.kind == CXCursor_LabelRef);
745  return std::make_pair(static_cast<const LabelStmt *>(C.data[0]),
746                        SourceLocation::getFromPtrEncoding(C.data[1]));
747}
748
749CXCursor cxcursor::MakeCursorOverloadedDeclRef(const OverloadExpr *E,
750                                               CXTranslationUnit TU) {
751  assert(E && TU && "Invalid arguments!");
752  OverloadedDeclRefStorage Storage(E);
753  void *RawLoc = E->getNameLoc().getPtrEncoding();
754  CXCursor C = {
755                 CXCursor_OverloadedDeclRef, 0,
756                 { Storage.getOpaqueValue(), RawLoc, TU }
757               };
758  return C;
759}
760
761CXCursor cxcursor::MakeCursorOverloadedDeclRef(const Decl *D,
762                                               SourceLocation Loc,
763                                               CXTranslationUnit TU) {
764  assert(D && TU && "Invalid arguments!");
765  void *RawLoc = Loc.getPtrEncoding();
766  OverloadedDeclRefStorage Storage(D);
767  CXCursor C = {
768    CXCursor_OverloadedDeclRef, 0,
769    { Storage.getOpaqueValue(), RawLoc, TU }
770  };
771  return C;
772}
773
774CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
775                                               SourceLocation Loc,
776                                               CXTranslationUnit TU) {
777  assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
778  void *RawLoc = Loc.getPtrEncoding();
779  OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
780  CXCursor C = {
781    CXCursor_OverloadedDeclRef, 0,
782    { Storage.getOpaqueValue(), RawLoc, TU }
783  };
784  return C;
785}
786
787std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
788cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
789  assert(C.kind == CXCursor_OverloadedDeclRef);
790  return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(
791                                       const_cast<void *>(C.data[0])),
792                        SourceLocation::getFromPtrEncoding(C.data[1]));
793}
794
795const Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
796  return static_cast<const Decl *>(Cursor.data[0]);
797}
798
799const Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
800  return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
801}
802
803const Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
804  if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
805      Cursor.kind == CXCursor_ObjCProtocolRef ||
806      Cursor.kind == CXCursor_ObjCClassRef)
807    return 0;
808
809  return static_cast<const Stmt *>(Cursor.data[1]);
810}
811
812const Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
813  return static_cast<const Attr *>(Cursor.data[1]);
814}
815
816const Decl *cxcursor::getCursorParentDecl(CXCursor Cursor) {
817  return static_cast<const Decl *>(Cursor.data[0]);
818}
819
820ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
821  return getCursorASTUnit(Cursor)->getASTContext();
822}
823
824ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
825  CXTranslationUnit TU = getCursorTU(Cursor);
826  if (!TU)
827    return 0;
828  return cxtu::getASTUnit(TU);
829}
830
831CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
832  return static_cast<CXTranslationUnit>(const_cast<void*>(Cursor.data[2]));
833}
834
835void cxcursor::getOverriddenCursors(CXCursor cursor,
836                                    SmallVectorImpl<CXCursor> &overridden) {
837  assert(clang_isDeclaration(cursor.kind));
838  const NamedDecl *D = dyn_cast_or_null<NamedDecl>(getCursorDecl(cursor));
839  if (!D)
840    return;
841
842  CXTranslationUnit TU = getCursorTU(cursor);
843  SmallVector<const NamedDecl *, 8> OverDecls;
844  D->getASTContext().getOverriddenMethods(D, OverDecls);
845
846  for (SmallVectorImpl<const NamedDecl *>::iterator
847         I = OverDecls.begin(), E = OverDecls.end(); I != E; ++I) {
848    overridden.push_back(MakeCXCursor(*I, TU));
849  }
850}
851
852std::pair<int, SourceLocation>
853cxcursor::getSelectorIdentifierIndexAndLoc(CXCursor cursor) {
854  if (cursor.kind == CXCursor_ObjCMessageExpr) {
855    if (cursor.xdata != -1)
856      return std::make_pair(cursor.xdata,
857                            cast<ObjCMessageExpr>(getCursorExpr(cursor))
858                                                ->getSelectorLoc(cursor.xdata));
859  } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
860             cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
861    if (cursor.xdata != -1)
862      return std::make_pair(cursor.xdata,
863                            cast<ObjCMethodDecl>(getCursorDecl(cursor))
864                                                ->getSelectorLoc(cursor.xdata));
865  }
866
867  return std::make_pair(-1, SourceLocation());
868}
869
870CXCursor cxcursor::getSelectorIdentifierCursor(int SelIdx, CXCursor cursor) {
871  CXCursor newCursor = cursor;
872
873  if (cursor.kind == CXCursor_ObjCMessageExpr) {
874    if (SelIdx == -1 ||
875        unsigned(SelIdx) >= cast<ObjCMessageExpr>(getCursorExpr(cursor))
876                                                         ->getNumSelectorLocs())
877      newCursor.xdata = -1;
878    else
879      newCursor.xdata = SelIdx;
880  } else if (cursor.kind == CXCursor_ObjCClassMethodDecl ||
881             cursor.kind == CXCursor_ObjCInstanceMethodDecl) {
882    if (SelIdx == -1 ||
883        unsigned(SelIdx) >= cast<ObjCMethodDecl>(getCursorDecl(cursor))
884                                                         ->getNumSelectorLocs())
885      newCursor.xdata = -1;
886    else
887      newCursor.xdata = SelIdx;
888  }
889
890  return newCursor;
891}
892
893CXCursor cxcursor::getTypeRefCursor(CXCursor cursor) {
894  if (cursor.kind != CXCursor_CallExpr)
895    return cursor;
896
897  if (cursor.xdata == 0)
898    return cursor;
899
900  const Expr *E = getCursorExpr(cursor);
901  TypeSourceInfo *Type = 0;
902  if (const CXXUnresolvedConstructExpr *
903        UnCtor = dyn_cast<CXXUnresolvedConstructExpr>(E)) {
904    Type = UnCtor->getTypeSourceInfo();
905  } else if (const CXXTemporaryObjectExpr *Tmp =
906                 dyn_cast<CXXTemporaryObjectExpr>(E)){
907    Type = Tmp->getTypeSourceInfo();
908  }
909
910  if (!Type)
911    return cursor;
912
913  CXTranslationUnit TU = getCursorTU(cursor);
914  QualType Ty = Type->getType();
915  TypeLoc TL = Type->getTypeLoc();
916  SourceLocation Loc = TL.getBeginLoc();
917
918  if (const ElaboratedType *ElabT = Ty->getAs<ElaboratedType>()) {
919    Ty = ElabT->getNamedType();
920    ElaboratedTypeLoc ElabTL = TL.castAs<ElaboratedTypeLoc>();
921    Loc = ElabTL.getNamedTypeLoc().getBeginLoc();
922  }
923
924  if (const TypedefType *Typedef = Ty->getAs<TypedefType>())
925    return MakeCursorTypeRef(Typedef->getDecl(), Loc, TU);
926  if (const TagType *Tag = Ty->getAs<TagType>())
927    return MakeCursorTypeRef(Tag->getDecl(), Loc, TU);
928  if (const TemplateTypeParmType *TemplP = Ty->getAs<TemplateTypeParmType>())
929    return MakeCursorTypeRef(TemplP->getDecl(), Loc, TU);
930
931  return cursor;
932}
933
934bool cxcursor::operator==(CXCursor X, CXCursor Y) {
935  return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
936         X.data[2] == Y.data[2];
937}
938
939// FIXME: Remove once we can model DeclGroups and their appropriate ranges
940// properly in the ASTs.
941bool cxcursor::isFirstInDeclGroup(CXCursor C) {
942  assert(clang_isDeclaration(C.kind));
943  return ((uintptr_t) (C.data[1])) != 0;
944}
945
946//===----------------------------------------------------------------------===//
947// libclang CXCursor APIs
948//===----------------------------------------------------------------------===//
949
950extern "C" {
951
952int clang_Cursor_isNull(CXCursor cursor) {
953  return clang_equalCursors(cursor, clang_getNullCursor());
954}
955
956CXTranslationUnit clang_Cursor_getTranslationUnit(CXCursor cursor) {
957  return getCursorTU(cursor);
958}
959
960int clang_Cursor_getNumArguments(CXCursor C) {
961  if (clang_isDeclaration(C.kind)) {
962    const Decl *D = cxcursor::getCursorDecl(C);
963    if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D))
964      return MD->param_size();
965    if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D))
966      return FD->param_size();
967  }
968
969  if (clang_isExpression(C.kind)) {
970    const Expr *E = cxcursor::getCursorExpr(C);
971    if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
972      return CE->getNumArgs();
973    }
974  }
975
976  return -1;
977}
978
979CXCursor clang_Cursor_getArgument(CXCursor C, unsigned i) {
980  if (clang_isDeclaration(C.kind)) {
981    const Decl *D = cxcursor::getCursorDecl(C);
982    if (const ObjCMethodDecl *MD = dyn_cast_or_null<ObjCMethodDecl>(D)) {
983      if (i < MD->param_size())
984        return cxcursor::MakeCXCursor(MD->param_begin()[i],
985                                      cxcursor::getCursorTU(C));
986    } else if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) {
987      if (i < FD->param_size())
988        return cxcursor::MakeCXCursor(FD->param_begin()[i],
989                                      cxcursor::getCursorTU(C));
990    }
991  }
992
993  if (clang_isExpression(C.kind)) {
994    const Expr *E = cxcursor::getCursorExpr(C);
995    if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
996      if (i < CE->getNumArgs()) {
997        return cxcursor::MakeCXCursor(CE->getArg(i),
998                                      getCursorDecl(C),
999                                      cxcursor::getCursorTU(C));
1000      }
1001    }
1002  }
1003
1004  return clang_getNullCursor();
1005}
1006
1007} // end: extern "C"
1008
1009//===----------------------------------------------------------------------===//
1010// CXCursorSet.
1011//===----------------------------------------------------------------------===//
1012
1013typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
1014
1015static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
1016  return (CXCursorSet) setImpl;
1017}
1018static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
1019  return (CXCursorSet_Impl*) set;
1020}
1021namespace llvm {
1022template<> struct DenseMapInfo<CXCursor> {
1023public:
1024  static inline CXCursor getEmptyKey() {
1025    return MakeCXCursorInvalid(CXCursor_InvalidFile);
1026  }
1027  static inline CXCursor getTombstoneKey() {
1028    return MakeCXCursorInvalid(CXCursor_NoDeclFound);
1029  }
1030  static inline unsigned getHashValue(const CXCursor &cursor) {
1031    return llvm::DenseMapInfo<std::pair<const void *, const void *> >
1032      ::getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
1033  }
1034  static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
1035    return x.kind == y.kind &&
1036           x.data[0] == y.data[0] &&
1037           x.data[1] == y.data[1];
1038  }
1039};
1040}
1041
1042extern "C" {
1043CXCursorSet clang_createCXCursorSet() {
1044  return packCXCursorSet(new CXCursorSet_Impl());
1045}
1046
1047void clang_disposeCXCursorSet(CXCursorSet set) {
1048  delete unpackCXCursorSet(set);
1049}
1050
1051unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
1052  CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1053  if (!setImpl)
1054    return 0;
1055  return setImpl->find(cursor) != setImpl->end();
1056}
1057
1058unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
1059  // Do not insert invalid cursors into the set.
1060  if (cursor.kind >= CXCursor_FirstInvalid &&
1061      cursor.kind <= CXCursor_LastInvalid)
1062    return 1;
1063
1064  CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
1065  if (!setImpl)
1066    return 1;
1067  unsigned &entry = (*setImpl)[cursor];
1068  unsigned flag = entry == 0 ? 1 : 0;
1069  entry = 1;
1070  return flag;
1071}
1072
1073CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
1074  enum CXCursorKind kind = clang_getCursorKind(cursor);
1075  if (clang_isDeclaration(kind)) {
1076    const Decl *decl = getCursorDecl(cursor);
1077    if (const NamedDecl *namedDecl = dyn_cast_or_null<NamedDecl>(decl)) {
1078      ASTUnit *unit = getCursorASTUnit(cursor);
1079      CodeCompletionResult Result(namedDecl, CCP_Declaration);
1080      CodeCompletionString *String
1081        = Result.CreateCodeCompletionString(unit->getASTContext(),
1082                                            unit->getPreprocessor(),
1083                                 unit->getCodeCompletionTUInfo().getAllocator(),
1084                                 unit->getCodeCompletionTUInfo(),
1085                                 true);
1086      return String;
1087    }
1088  }
1089  else if (kind == CXCursor_MacroDefinition) {
1090    const MacroDefinition *definition = getCursorMacroDefinition(cursor);
1091    const IdentifierInfo *MacroInfo = definition->getName();
1092    ASTUnit *unit = getCursorASTUnit(cursor);
1093    CodeCompletionResult Result(MacroInfo);
1094    CodeCompletionString *String
1095      = Result.CreateCodeCompletionString(unit->getASTContext(),
1096                                          unit->getPreprocessor(),
1097                                 unit->getCodeCompletionTUInfo().getAllocator(),
1098                                 unit->getCodeCompletionTUInfo(),
1099                                 false);
1100    return String;
1101  }
1102  return NULL;
1103}
1104} // end: extern C.
1105
1106namespace {
1107  struct OverridenCursorsPool {
1108    typedef SmallVector<CXCursor, 2> CursorVec;
1109    std::vector<CursorVec*> AllCursors;
1110    std::vector<CursorVec*> AvailableCursors;
1111
1112    ~OverridenCursorsPool() {
1113      for (std::vector<CursorVec*>::iterator I = AllCursors.begin(),
1114           E = AllCursors.end(); I != E; ++I) {
1115        delete *I;
1116      }
1117    }
1118  };
1119}
1120
1121void *cxcursor::createOverridenCXCursorsPool() {
1122  return new OverridenCursorsPool();
1123}
1124
1125void cxcursor::disposeOverridenCXCursorsPool(void *pool) {
1126  delete static_cast<OverridenCursorsPool*>(pool);
1127}
1128
1129extern "C" {
1130void clang_getOverriddenCursors(CXCursor cursor,
1131                                CXCursor **overridden,
1132                                unsigned *num_overridden) {
1133  if (overridden)
1134    *overridden = 0;
1135  if (num_overridden)
1136    *num_overridden = 0;
1137
1138  CXTranslationUnit TU = cxcursor::getCursorTU(cursor);
1139
1140  if (!overridden || !num_overridden || !TU)
1141    return;
1142
1143  if (!clang_isDeclaration(cursor.kind))
1144    return;
1145
1146  OverridenCursorsPool &pool =
1147    *static_cast<OverridenCursorsPool*>(TU->OverridenCursorsPool);
1148
1149  OverridenCursorsPool::CursorVec *Vec = 0;
1150
1151  if (!pool.AvailableCursors.empty()) {
1152    Vec = pool.AvailableCursors.back();
1153    pool.AvailableCursors.pop_back();
1154  }
1155  else {
1156    Vec = new OverridenCursorsPool::CursorVec();
1157    pool.AllCursors.push_back(Vec);
1158  }
1159
1160  // Clear out the vector, but don't free the memory contents.  This
1161  // reduces malloc() traffic.
1162  Vec->clear();
1163
1164  // Use the first entry to contain a back reference to the vector.
1165  // This is a complete hack.
1166  CXCursor backRefCursor = MakeCXCursorInvalid(CXCursor_InvalidFile, TU);
1167  backRefCursor.data[0] = Vec;
1168  assert(cxcursor::getCursorTU(backRefCursor) == TU);
1169  Vec->push_back(backRefCursor);
1170
1171  // Get the overriden cursors.
1172  cxcursor::getOverriddenCursors(cursor, *Vec);
1173
1174  // Did we get any overriden cursors?  If not, return Vec to the pool
1175  // of available cursor vectors.
1176  if (Vec->size() == 1) {
1177    pool.AvailableCursors.push_back(Vec);
1178    return;
1179  }
1180
1181  // Now tell the caller about the overriden cursors.
1182  assert(Vec->size() > 1);
1183  *overridden = &((*Vec)[1]);
1184  *num_overridden = Vec->size() - 1;
1185}
1186
1187void clang_disposeOverriddenCursors(CXCursor *overridden) {
1188  if (!overridden)
1189    return;
1190
1191  // Use pointer arithmetic to get back the first faux entry
1192  // which has a back-reference to the TU and the vector.
1193  --overridden;
1194  OverridenCursorsPool::CursorVec *Vec =
1195      static_cast<OverridenCursorsPool::CursorVec *>(
1196          const_cast<void *>(overridden->data[0]));
1197  CXTranslationUnit TU = getCursorTU(*overridden);
1198
1199  assert(Vec && TU);
1200
1201  OverridenCursorsPool &pool =
1202    *static_cast<OverridenCursorsPool*>(TU->OverridenCursorsPool);
1203
1204  pool.AvailableCursors.push_back(Vec);
1205}
1206
1207int clang_Cursor_isDynamicCall(CXCursor C) {
1208  const Expr *E = 0;
1209  if (clang_isExpression(C.kind))
1210    E = getCursorExpr(C);
1211  if (!E)
1212    return 0;
1213
1214  if (const ObjCMessageExpr *MsgE = dyn_cast<ObjCMessageExpr>(E))
1215    return MsgE->getReceiverKind() == ObjCMessageExpr::Instance;
1216
1217  const MemberExpr *ME = 0;
1218  if (isa<MemberExpr>(E))
1219    ME = cast<MemberExpr>(E);
1220  else if (const CallExpr *CE = dyn_cast<CallExpr>(E))
1221    ME = dyn_cast_or_null<MemberExpr>(CE->getCallee());
1222
1223  if (ME) {
1224    if (const CXXMethodDecl *
1225          MD = dyn_cast_or_null<CXXMethodDecl>(ME->getMemberDecl()))
1226      return MD->isVirtual() && !ME->hasQualifier();
1227  }
1228
1229  return 0;
1230}
1231
1232CXType clang_Cursor_getReceiverType(CXCursor C) {
1233  CXTranslationUnit TU = cxcursor::getCursorTU(C);
1234  const Expr *E = 0;
1235  if (clang_isExpression(C.kind))
1236    E = getCursorExpr(C);
1237
1238  if (const ObjCMessageExpr *MsgE = dyn_cast_or_null<ObjCMessageExpr>(E))
1239    return cxtype::MakeCXType(MsgE->getReceiverType(), TU);
1240
1241  return cxtype::MakeCXType(QualType(), TU);
1242}
1243
1244} // end: extern "C"
1245