CXCursor.cpp revision 28bbe4b8acc338476fe0825769b41fb32b423c72 
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 "clang/Frontend/ASTUnit.h"
20#include "clang/AST/Decl.h"
21#include "clang/AST/DeclCXX.h"
22#include "clang/AST/DeclObjC.h"
23#include "clang/AST/Expr.h"
24#include "clang/AST/ExprCXX.h"
25#include "clang-c/Index.h"
26#include "llvm/Support/ErrorHandling.h"
27
28using namespace clang;
29using namespace cxcursor;
30
31CXCursor cxcursor::MakeCXCursorInvalid(CXCursorKind K) {
32  assert(K >= CXCursor_FirstInvalid && K <= CXCursor_LastInvalid);
33  CXCursor C = { K, { 0, 0, 0 } };
34  return C;
35}
36
37static CXCursorKind GetCursorKind(const Attr *A) {
38  assert(A && "Invalid arguments!");
39  switch (A->getKind()) {
40    default: break;
41    case attr::IBAction: return CXCursor_IBActionAttr;
42    case attr::IBOutlet: return CXCursor_IBOutletAttr;
43    case attr::IBOutletCollection: return CXCursor_IBOutletCollectionAttr;
44  }
45
46  return CXCursor_UnexposedAttr;
47}
48
49CXCursor cxcursor::MakeCXCursor(const Attr *A, Decl *Parent,
50                                CXTranslationUnit TU) {
51  assert(A && Parent && TU && "Invalid arguments!");
52  CXCursor C = { GetCursorKind(A), { Parent, (void*)A, TU } };
53  return C;
54}
55
56CXCursor cxcursor::MakeCXCursor(Decl *D, CXTranslationUnit TU,
57                                bool FirstInDeclGroup) {
58  assert(D && TU && "Invalid arguments!");
59  CXCursor C = { getCursorKindForDecl(D),
60                 { D, (void*)(intptr_t) (FirstInDeclGroup ? 1 : 0), TU }
61               };
62  return C;
63}
64
65CXCursor cxcursor::MakeCXCursor(Stmt *S, Decl *Parent,
66                                CXTranslationUnit TU) {
67  assert(S && TU && "Invalid arguments!");
68  CXCursorKind K = CXCursor_NotImplemented;
69
70  switch (S->getStmtClass()) {
71  case Stmt::NoStmtClass:
72    break;
73
74  case Stmt::NullStmtClass:
75  case Stmt::CompoundStmtClass:
76  case Stmt::CaseStmtClass:
77  case Stmt::DefaultStmtClass:
78  case Stmt::IfStmtClass:
79  case Stmt::SwitchStmtClass:
80  case Stmt::WhileStmtClass:
81  case Stmt::DoStmtClass:
82  case Stmt::ForStmtClass:
83  case Stmt::GotoStmtClass:
84  case Stmt::IndirectGotoStmtClass:
85  case Stmt::ContinueStmtClass:
86  case Stmt::BreakStmtClass:
87  case Stmt::ReturnStmtClass:
88  case Stmt::DeclStmtClass:
89  case Stmt::AsmStmtClass:
90  case Stmt::ObjCAtTryStmtClass:
91  case Stmt::ObjCAtCatchStmtClass:
92  case Stmt::ObjCAtFinallyStmtClass:
93  case Stmt::ObjCAtThrowStmtClass:
94  case Stmt::ObjCAtSynchronizedStmtClass:
95  case Stmt::ObjCForCollectionStmtClass:
96  case Stmt::CXXCatchStmtClass:
97  case Stmt::CXXTryStmtClass:
98  case Stmt::CXXForRangeStmtClass:
99  case Stmt::SEHTryStmtClass:
100  case Stmt::SEHExceptStmtClass:
101  case Stmt::SEHFinallyStmtClass:
102    K = CXCursor_UnexposedStmt;
103    break;
104
105  case Stmt::LabelStmtClass:
106    K = CXCursor_LabelStmt;
107    break;
108
109  case Stmt::PredefinedExprClass:
110  case Stmt::IntegerLiteralClass:
111  case Stmt::FloatingLiteralClass:
112  case Stmt::ImaginaryLiteralClass:
113  case Stmt::StringLiteralClass:
114  case Stmt::CharacterLiteralClass:
115  case Stmt::ParenExprClass:
116  case Stmt::UnaryOperatorClass:
117  case Stmt::OffsetOfExprClass:
118  case Stmt::UnaryExprOrTypeTraitExprClass:
119  case Stmt::ArraySubscriptExprClass:
120  case Stmt::BinaryOperatorClass:
121  case Stmt::CompoundAssignOperatorClass:
122  case Stmt::ConditionalOperatorClass:
123  case Stmt::BinaryConditionalOperatorClass:
124  case Stmt::ImplicitCastExprClass:
125  case Stmt::CStyleCastExprClass:
126  case Stmt::CompoundLiteralExprClass:
127  case Stmt::ExtVectorElementExprClass:
128  case Stmt::InitListExprClass:
129  case Stmt::DesignatedInitExprClass:
130  case Stmt::ImplicitValueInitExprClass:
131  case Stmt::ParenListExprClass:
132  case Stmt::VAArgExprClass:
133  case Stmt::AddrLabelExprClass:
134  case Stmt::StmtExprClass:
135  case Stmt::ChooseExprClass:
136  case Stmt::GenericSelectionExprClass:
137  case Stmt::GNUNullExprClass:
138  case Stmt::CXXStaticCastExprClass:
139  case Stmt::CXXDynamicCastExprClass:
140  case Stmt::CXXReinterpretCastExprClass:
141  case Stmt::CXXConstCastExprClass:
142  case Stmt::CXXFunctionalCastExprClass:
143  case Stmt::CXXTypeidExprClass:
144  case Stmt::CXXUuidofExprClass:
145  case Stmt::CXXBoolLiteralExprClass:
146  case Stmt::CXXNullPtrLiteralExprClass:
147  case Stmt::CXXThisExprClass:
148  case Stmt::CXXThrowExprClass:
149  case Stmt::CXXDefaultArgExprClass:
150  case Stmt::CXXScalarValueInitExprClass:
151  case Stmt::CXXNewExprClass:
152  case Stmt::CXXDeleteExprClass:
153  case Stmt::CXXPseudoDestructorExprClass:
154  case Stmt::UnresolvedLookupExprClass:
155  case Stmt::UnaryTypeTraitExprClass:
156  case Stmt::BinaryTypeTraitExprClass:
157  case Stmt::ArrayTypeTraitExprClass:
158  case Stmt::ExpressionTraitExprClass:
159  case Stmt::DependentScopeDeclRefExprClass:
160  case Stmt::CXXBindTemporaryExprClass:
161  case Stmt::ExprWithCleanupsClass:
162  case Stmt::CXXUnresolvedConstructExprClass:
163  case Stmt::CXXDependentScopeMemberExprClass:
164  case Stmt::UnresolvedMemberExprClass:
165  case Stmt::CXXNoexceptExprClass:
166  case Stmt::ObjCStringLiteralClass:
167  case Stmt::ObjCEncodeExprClass:
168  case Stmt::ObjCSelectorExprClass:
169  case Stmt::ObjCProtocolExprClass:
170  case Stmt::ObjCIsaExprClass:
171  case Stmt::ShuffleVectorExprClass:
172  case Stmt::BlockExprClass:
173  case Stmt::OpaqueValueExprClass:
174  case Stmt::PackExpansionExprClass:
175  case Stmt::SizeOfPackExprClass:
176    K = CXCursor_UnexposedExpr;
177    break;
178
179  case Stmt::DeclRefExprClass:
180  case Stmt::BlockDeclRefExprClass:
181  case Stmt::SubstNonTypeTemplateParmPackExprClass:
182    // FIXME: UnresolvedLookupExpr?
183    // FIXME: DependentScopeDeclRefExpr?
184    K = CXCursor_DeclRefExpr;
185    break;
186
187  case Stmt::MemberExprClass:
188  case Stmt::ObjCIvarRefExprClass:
189  case Stmt::ObjCPropertyRefExprClass:
190    // FIXME: UnresolvedMemberExpr?
191    // FIXME: CXXDependentScopeMemberExpr?
192    K = CXCursor_MemberRefExpr;
193    break;
194
195  case Stmt::CallExprClass:
196  case Stmt::CXXOperatorCallExprClass:
197  case Stmt::CXXMemberCallExprClass:
198  case Stmt::CUDAKernelCallExprClass:
199  case Stmt::CXXConstructExprClass:
200  case Stmt::CXXTemporaryObjectExprClass:
201    // FIXME: CXXUnresolvedConstructExpr
202    K = CXCursor_CallExpr;
203    break;
204
205  case Stmt::ObjCMessageExprClass:
206    K = CXCursor_ObjCMessageExpr;
207    break;
208  }
209
210  CXCursor C = { K, { Parent, S, TU } };
211  return C;
212}
213
214CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
215                                               SourceLocation Loc,
216                                               CXTranslationUnit TU) {
217  assert(Super && TU && "Invalid arguments!");
218  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
219  CXCursor C = { CXCursor_ObjCSuperClassRef, { Super, RawLoc, TU } };
220  return C;
221}
222
223std::pair<ObjCInterfaceDecl *, SourceLocation>
224cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
225  assert(C.kind == CXCursor_ObjCSuperClassRef);
226  return std::make_pair(static_cast<ObjCInterfaceDecl *>(C.data[0]),
227           SourceLocation::getFromRawEncoding(
228                                      reinterpret_cast<uintptr_t>(C.data[1])));
229}
230
231CXCursor cxcursor::MakeCursorObjCProtocolRef(ObjCProtocolDecl *Super,
232                                             SourceLocation Loc,
233                                             CXTranslationUnit TU) {
234  assert(Super && TU && "Invalid arguments!");
235  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
236  CXCursor C = { CXCursor_ObjCProtocolRef, { Super, RawLoc, TU } };
237  return C;
238}
239
240std::pair<ObjCProtocolDecl *, SourceLocation>
241cxcursor::getCursorObjCProtocolRef(CXCursor C) {
242  assert(C.kind == CXCursor_ObjCProtocolRef);
243  return std::make_pair(static_cast<ObjCProtocolDecl *>(C.data[0]),
244           SourceLocation::getFromRawEncoding(
245                                      reinterpret_cast<uintptr_t>(C.data[1])));
246}
247
248CXCursor cxcursor::MakeCursorObjCClassRef(ObjCInterfaceDecl *Class,
249                                          SourceLocation Loc,
250                                          CXTranslationUnit TU) {
251  // 'Class' can be null for invalid code.
252  if (!Class)
253    return MakeCXCursorInvalid(CXCursor_InvalidCode);
254  assert(TU && "Invalid arguments!");
255  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
256  CXCursor C = { CXCursor_ObjCClassRef, { Class, RawLoc, TU } };
257  return C;
258}
259
260std::pair<ObjCInterfaceDecl *, SourceLocation>
261cxcursor::getCursorObjCClassRef(CXCursor C) {
262  assert(C.kind == CXCursor_ObjCClassRef);
263  return std::make_pair(static_cast<ObjCInterfaceDecl *>(C.data[0]),
264           SourceLocation::getFromRawEncoding(
265                                      reinterpret_cast<uintptr_t>(C.data[1])));
266}
267
268CXCursor cxcursor::MakeCursorTypeRef(TypeDecl *Type, SourceLocation Loc,
269                                     CXTranslationUnit TU) {
270  assert(Type && TU && "Invalid arguments!");
271  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
272  CXCursor C = { CXCursor_TypeRef, { Type, RawLoc, TU } };
273  return C;
274}
275
276std::pair<TypeDecl *, SourceLocation>
277cxcursor::getCursorTypeRef(CXCursor C) {
278  assert(C.kind == CXCursor_TypeRef);
279  return std::make_pair(static_cast<TypeDecl *>(C.data[0]),
280           SourceLocation::getFromRawEncoding(
281                                      reinterpret_cast<uintptr_t>(C.data[1])));
282}
283
284CXCursor cxcursor::MakeCursorTemplateRef(TemplateDecl *Template,
285                                         SourceLocation Loc,
286                                         CXTranslationUnit TU) {
287  assert(Template && TU && "Invalid arguments!");
288  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
289  CXCursor C = { CXCursor_TemplateRef, { Template, RawLoc, TU } };
290  return C;
291}
292
293std::pair<TemplateDecl *, SourceLocation>
294cxcursor::getCursorTemplateRef(CXCursor C) {
295  assert(C.kind == CXCursor_TemplateRef);
296  return std::make_pair(static_cast<TemplateDecl *>(C.data[0]),
297                        SourceLocation::getFromRawEncoding(
298                                       reinterpret_cast<uintptr_t>(C.data[1])));
299}
300
301CXCursor cxcursor::MakeCursorNamespaceRef(NamedDecl *NS, SourceLocation Loc,
302                                          CXTranslationUnit TU) {
303
304  assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
305         "Invalid arguments!");
306  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
307  CXCursor C = { CXCursor_NamespaceRef, { NS, RawLoc, TU } };
308  return C;
309}
310
311std::pair<NamedDecl *, SourceLocation>
312cxcursor::getCursorNamespaceRef(CXCursor C) {
313  assert(C.kind == CXCursor_NamespaceRef);
314  return std::make_pair(static_cast<NamedDecl *>(C.data[0]),
315                        SourceLocation::getFromRawEncoding(
316                                       reinterpret_cast<uintptr_t>(C.data[1])));
317}
318
319CXCursor cxcursor::MakeCursorMemberRef(FieldDecl *Field, SourceLocation Loc,
320                                       CXTranslationUnit TU) {
321
322  assert(Field && TU && "Invalid arguments!");
323  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
324  CXCursor C = { CXCursor_MemberRef, { Field, RawLoc, TU } };
325  return C;
326}
327
328std::pair<FieldDecl *, SourceLocation>
329cxcursor::getCursorMemberRef(CXCursor C) {
330  assert(C.kind == CXCursor_MemberRef);
331  return std::make_pair(static_cast<FieldDecl *>(C.data[0]),
332                        SourceLocation::getFromRawEncoding(
333                                       reinterpret_cast<uintptr_t>(C.data[1])));
334}
335
336CXCursor cxcursor::MakeCursorCXXBaseSpecifier(CXXBaseSpecifier *B,
337                                              CXTranslationUnit TU){
338  CXCursor C = { CXCursor_CXXBaseSpecifier, { B, 0, TU } };
339  return C;
340}
341
342CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
343  assert(C.kind == CXCursor_CXXBaseSpecifier);
344  return static_cast<CXXBaseSpecifier*>(C.data[0]);
345}
346
347CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
348                                                    CXTranslationUnit TU) {
349  CXCursor C = { CXCursor_PreprocessingDirective,
350                 { reinterpret_cast<void *>(Range.getBegin().getRawEncoding()),
351                   reinterpret_cast<void *>(Range.getEnd().getRawEncoding()),
352                   TU }
353               };
354  return C;
355}
356
357SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
358  assert(C.kind == CXCursor_PreprocessingDirective);
359  return SourceRange(SourceLocation::getFromRawEncoding(
360                                      reinterpret_cast<uintptr_t> (C.data[0])),
361                     SourceLocation::getFromRawEncoding(
362                                      reinterpret_cast<uintptr_t> (C.data[1])));
363}
364
365CXCursor cxcursor::MakeMacroDefinitionCursor(MacroDefinition *MI,
366                                             CXTranslationUnit TU) {
367  CXCursor C = { CXCursor_MacroDefinition, { MI, 0, TU } };
368  return C;
369}
370
371MacroDefinition *cxcursor::getCursorMacroDefinition(CXCursor C) {
372  assert(C.kind == CXCursor_MacroDefinition);
373  return static_cast<MacroDefinition *>(C.data[0]);
374}
375
376CXCursor cxcursor::MakeMacroInstantiationCursor(MacroInstantiation *MI,
377                                                CXTranslationUnit TU) {
378  CXCursor C = { CXCursor_MacroInstantiation, { MI, 0, TU } };
379  return C;
380}
381
382MacroInstantiation *cxcursor::getCursorMacroInstantiation(CXCursor C) {
383  assert(C.kind == CXCursor_MacroInstantiation);
384  return static_cast<MacroInstantiation *>(C.data[0]);
385}
386
387CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
388                                                CXTranslationUnit TU) {
389  CXCursor C = { CXCursor_InclusionDirective, { ID, 0, TU } };
390  return C;
391}
392
393InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
394  assert(C.kind == CXCursor_InclusionDirective);
395  return static_cast<InclusionDirective *>(C.data[0]);
396}
397
398CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
399                                      CXTranslationUnit TU) {
400
401  assert(Label && TU && "Invalid arguments!");
402  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
403  CXCursor C = { CXCursor_LabelRef, { Label, RawLoc, TU } };
404  return C;
405}
406
407std::pair<LabelStmt*, SourceLocation>
408cxcursor::getCursorLabelRef(CXCursor C) {
409  assert(C.kind == CXCursor_LabelRef);
410  return std::make_pair(static_cast<LabelStmt *>(C.data[0]),
411                        SourceLocation::getFromRawEncoding(
412                                       reinterpret_cast<uintptr_t>(C.data[1])));
413}
414
415CXCursor cxcursor::MakeCursorOverloadedDeclRef(OverloadExpr *E,
416                                               CXTranslationUnit TU) {
417  assert(E && TU && "Invalid arguments!");
418  OverloadedDeclRefStorage Storage(E);
419  void *RawLoc = reinterpret_cast<void *>(E->getNameLoc().getRawEncoding());
420  CXCursor C = {
421                 CXCursor_OverloadedDeclRef,
422                 { Storage.getOpaqueValue(), RawLoc, TU }
423               };
424  return C;
425}
426
427CXCursor cxcursor::MakeCursorOverloadedDeclRef(Decl *D,
428                                               SourceLocation Loc,
429                                               CXTranslationUnit TU) {
430  assert(D && TU && "Invalid arguments!");
431  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
432  OverloadedDeclRefStorage Storage(D);
433  CXCursor C = {
434    CXCursor_OverloadedDeclRef,
435    { Storage.getOpaqueValue(), RawLoc, TU }
436  };
437  return C;
438}
439
440CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
441                                               SourceLocation Loc,
442                                               CXTranslationUnit TU) {
443  assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
444  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
445  OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
446  CXCursor C = {
447    CXCursor_OverloadedDeclRef,
448    { Storage.getOpaqueValue(), RawLoc, TU }
449  };
450  return C;
451}
452
453std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
454cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
455  assert(C.kind == CXCursor_OverloadedDeclRef);
456  return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(C.data[0]),
457                        SourceLocation::getFromRawEncoding(
458                                       reinterpret_cast<uintptr_t>(C.data[1])));
459}
460
461Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
462  return (Decl *)Cursor.data[0];
463}
464
465Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
466  return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
467}
468
469Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
470  if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
471      Cursor.kind == CXCursor_ObjCProtocolRef ||
472      Cursor.kind == CXCursor_ObjCClassRef)
473    return 0;
474
475  return (Stmt *)Cursor.data[1];
476}
477
478Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
479  return (Attr *)Cursor.data[1];
480}
481
482ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
483  return getCursorASTUnit(Cursor)->getASTContext();
484}
485
486ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
487  return static_cast<ASTUnit *>(static_cast<CXTranslationUnit>(Cursor.data[2])
488                                  ->TUData);
489}
490
491CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
492  return static_cast<CXTranslationUnit>(Cursor.data[2]);
493}
494
495bool cxcursor::operator==(CXCursor X, CXCursor Y) {
496  return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
497         X.data[2] == Y.data[2];
498}
499
500// FIXME: Remove once we can model DeclGroups and their appropriate ranges
501// properly in the ASTs.
502bool cxcursor::isFirstInDeclGroup(CXCursor C) {
503  assert(clang_isDeclaration(C.kind));
504  return ((uintptr_t) (C.data[1])) != 0;
505}
506
507//===----------------------------------------------------------------------===//
508// CXCursorSet.
509//===----------------------------------------------------------------------===//
510
511typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
512
513static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
514  return (CXCursorSet) setImpl;
515}
516static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
517  return (CXCursorSet_Impl*) set;
518}
519namespace llvm {
520template<> struct DenseMapInfo<CXCursor> {
521public:
522  static inline CXCursor getEmptyKey() {
523    return MakeCXCursorInvalid(CXCursor_InvalidFile);
524  }
525  static inline CXCursor getTombstoneKey() {
526    return MakeCXCursorInvalid(CXCursor_NoDeclFound);
527  }
528  static inline unsigned getHashValue(const CXCursor &cursor) {
529    return llvm::DenseMapInfo<std::pair<void*,void*> >
530      ::getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
531  }
532  static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
533    return x.kind == y.kind &&
534           x.data[0] == y.data[0] &&
535           x.data[1] == y.data[1];
536  }
537};
538}
539
540extern "C" {
541CXCursorSet clang_createCXCursorSet() {
542  return packCXCursorSet(new CXCursorSet_Impl());
543}
544
545void clang_disposeCXCursorSet(CXCursorSet set) {
546  delete unpackCXCursorSet(set);
547}
548
549unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
550  CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
551  if (!setImpl)
552    return 0;
553  return setImpl->find(cursor) == setImpl->end();
554}
555
556unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
557  // Do not insert invalid cursors into the set.
558  if (cursor.kind >= CXCursor_FirstInvalid &&
559      cursor.kind <= CXCursor_LastInvalid)
560    return 1;
561
562  CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
563  if (!setImpl)
564    return 1;
565  unsigned &entry = (*setImpl)[cursor];
566  unsigned flag = entry == 0 ? 1 : 0;
567  entry = 1;
568  return flag;
569}
570} // end: extern "C"
571