CXCursor.cpp revision 8ccac3de1335f1cfd7cea56ba1cefcf0b724ce3f 
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::ObjCAutoreleasePoolStmtClass:
96  case Stmt::ObjCForCollectionStmtClass:
97  case Stmt::CXXCatchStmtClass:
98  case Stmt::CXXTryStmtClass:
99  case Stmt::CXXForRangeStmtClass:
100  case Stmt::SEHTryStmtClass:
101  case Stmt::SEHExceptStmtClass:
102  case Stmt::SEHFinallyStmtClass:
103  case Stmt::MaterializeTemporaryExprClass:
104    K = CXCursor_UnexposedStmt;
105    break;
106
107  case Stmt::LabelStmtClass:
108    K = CXCursor_LabelStmt;
109    break;
110
111  case Stmt::PredefinedExprClass:
112  case Stmt::IntegerLiteralClass:
113  case Stmt::FloatingLiteralClass:
114  case Stmt::ImaginaryLiteralClass:
115  case Stmt::StringLiteralClass:
116  case Stmt::CharacterLiteralClass:
117  case Stmt::ParenExprClass:
118  case Stmt::UnaryOperatorClass:
119  case Stmt::OffsetOfExprClass:
120  case Stmt::UnaryExprOrTypeTraitExprClass:
121  case Stmt::ArraySubscriptExprClass:
122  case Stmt::BinaryOperatorClass:
123  case Stmt::CompoundAssignOperatorClass:
124  case Stmt::ConditionalOperatorClass:
125  case Stmt::BinaryConditionalOperatorClass:
126  case Stmt::ImplicitCastExprClass:
127  case Stmt::CStyleCastExprClass:
128  case Stmt::CompoundLiteralExprClass:
129  case Stmt::ExtVectorElementExprClass:
130  case Stmt::InitListExprClass:
131  case Stmt::DesignatedInitExprClass:
132  case Stmt::ImplicitValueInitExprClass:
133  case Stmt::ParenListExprClass:
134  case Stmt::VAArgExprClass:
135  case Stmt::AddrLabelExprClass:
136  case Stmt::StmtExprClass:
137  case Stmt::ChooseExprClass:
138  case Stmt::GenericSelectionExprClass:
139  case Stmt::GNUNullExprClass:
140  case Stmt::CXXStaticCastExprClass:
141  case Stmt::CXXDynamicCastExprClass:
142  case Stmt::CXXReinterpretCastExprClass:
143  case Stmt::CXXConstCastExprClass:
144  case Stmt::CXXFunctionalCastExprClass:
145  case Stmt::CXXTypeidExprClass:
146  case Stmt::CXXUuidofExprClass:
147  case Stmt::CXXBoolLiteralExprClass:
148  case Stmt::CXXNullPtrLiteralExprClass:
149  case Stmt::CXXThisExprClass:
150  case Stmt::CXXThrowExprClass:
151  case Stmt::CXXDefaultArgExprClass:
152  case Stmt::CXXScalarValueInitExprClass:
153  case Stmt::CXXNewExprClass:
154  case Stmt::CXXDeleteExprClass:
155  case Stmt::CXXPseudoDestructorExprClass:
156  case Stmt::UnresolvedLookupExprClass:
157  case Stmt::UnaryTypeTraitExprClass:
158  case Stmt::BinaryTypeTraitExprClass:
159  case Stmt::ArrayTypeTraitExprClass:
160  case Stmt::ExpressionTraitExprClass:
161  case Stmt::DependentScopeDeclRefExprClass:
162  case Stmt::CXXBindTemporaryExprClass:
163  case Stmt::ExprWithCleanupsClass:
164  case Stmt::CXXUnresolvedConstructExprClass:
165  case Stmt::CXXDependentScopeMemberExprClass:
166  case Stmt::UnresolvedMemberExprClass:
167  case Stmt::CXXNoexceptExprClass:
168  case Stmt::ObjCStringLiteralClass:
169  case Stmt::ObjCEncodeExprClass:
170  case Stmt::ObjCSelectorExprClass:
171  case Stmt::ObjCProtocolExprClass:
172  case Stmt::ObjCIsaExprClass:
173  case Stmt::ObjCIndirectCopyRestoreExprClass:
174  case Stmt::ObjCBridgedCastExprClass:
175  case Stmt::ShuffleVectorExprClass:
176  case Stmt::BlockExprClass:
177  case Stmt::OpaqueValueExprClass:
178  case Stmt::PackExpansionExprClass:
179  case Stmt::SizeOfPackExprClass:
180  case Stmt::AsTypeExprClass:
181    K = CXCursor_UnexposedExpr;
182    break;
183
184  case Stmt::DeclRefExprClass:
185  case Stmt::BlockDeclRefExprClass:
186  case Stmt::SubstNonTypeTemplateParmPackExprClass:
187    // FIXME: UnresolvedLookupExpr?
188    // FIXME: DependentScopeDeclRefExpr?
189    K = CXCursor_DeclRefExpr;
190    break;
191
192  case Stmt::MemberExprClass:
193  case Stmt::ObjCIvarRefExprClass:
194  case Stmt::ObjCPropertyRefExprClass:
195    // FIXME: UnresolvedMemberExpr?
196    // FIXME: CXXDependentScopeMemberExpr?
197    K = CXCursor_MemberRefExpr;
198    break;
199
200  case Stmt::CallExprClass:
201  case Stmt::CXXOperatorCallExprClass:
202  case Stmt::CXXMemberCallExprClass:
203  case Stmt::CUDAKernelCallExprClass:
204  case Stmt::CXXConstructExprClass:
205  case Stmt::CXXTemporaryObjectExprClass:
206    // FIXME: CXXUnresolvedConstructExpr
207    K = CXCursor_CallExpr;
208    break;
209
210  case Stmt::ObjCMessageExprClass:
211    K = CXCursor_ObjCMessageExpr;
212    break;
213  }
214
215  CXCursor C = { K, { Parent, S, TU } };
216  return C;
217}
218
219CXCursor cxcursor::MakeCursorObjCSuperClassRef(ObjCInterfaceDecl *Super,
220                                               SourceLocation Loc,
221                                               CXTranslationUnit TU) {
222  assert(Super && TU && "Invalid arguments!");
223  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
224  CXCursor C = { CXCursor_ObjCSuperClassRef, { Super, RawLoc, TU } };
225  return C;
226}
227
228std::pair<ObjCInterfaceDecl *, SourceLocation>
229cxcursor::getCursorObjCSuperClassRef(CXCursor C) {
230  assert(C.kind == CXCursor_ObjCSuperClassRef);
231  return std::make_pair(static_cast<ObjCInterfaceDecl *>(C.data[0]),
232           SourceLocation::getFromRawEncoding(
233                                      reinterpret_cast<uintptr_t>(C.data[1])));
234}
235
236CXCursor cxcursor::MakeCursorObjCProtocolRef(ObjCProtocolDecl *Super,
237                                             SourceLocation Loc,
238                                             CXTranslationUnit TU) {
239  assert(Super && TU && "Invalid arguments!");
240  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
241  CXCursor C = { CXCursor_ObjCProtocolRef, { Super, RawLoc, TU } };
242  return C;
243}
244
245std::pair<ObjCProtocolDecl *, SourceLocation>
246cxcursor::getCursorObjCProtocolRef(CXCursor C) {
247  assert(C.kind == CXCursor_ObjCProtocolRef);
248  return std::make_pair(static_cast<ObjCProtocolDecl *>(C.data[0]),
249           SourceLocation::getFromRawEncoding(
250                                      reinterpret_cast<uintptr_t>(C.data[1])));
251}
252
253CXCursor cxcursor::MakeCursorObjCClassRef(ObjCInterfaceDecl *Class,
254                                          SourceLocation Loc,
255                                          CXTranslationUnit TU) {
256  // 'Class' can be null for invalid code.
257  if (!Class)
258    return MakeCXCursorInvalid(CXCursor_InvalidCode);
259  assert(TU && "Invalid arguments!");
260  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
261  CXCursor C = { CXCursor_ObjCClassRef, { Class, RawLoc, TU } };
262  return C;
263}
264
265std::pair<ObjCInterfaceDecl *, SourceLocation>
266cxcursor::getCursorObjCClassRef(CXCursor C) {
267  assert(C.kind == CXCursor_ObjCClassRef);
268  return std::make_pair(static_cast<ObjCInterfaceDecl *>(C.data[0]),
269           SourceLocation::getFromRawEncoding(
270                                      reinterpret_cast<uintptr_t>(C.data[1])));
271}
272
273CXCursor cxcursor::MakeCursorTypeRef(TypeDecl *Type, SourceLocation Loc,
274                                     CXTranslationUnit TU) {
275  assert(Type && TU && "Invalid arguments!");
276  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
277  CXCursor C = { CXCursor_TypeRef, { Type, RawLoc, TU } };
278  return C;
279}
280
281std::pair<TypeDecl *, SourceLocation>
282cxcursor::getCursorTypeRef(CXCursor C) {
283  assert(C.kind == CXCursor_TypeRef);
284  return std::make_pair(static_cast<TypeDecl *>(C.data[0]),
285           SourceLocation::getFromRawEncoding(
286                                      reinterpret_cast<uintptr_t>(C.data[1])));
287}
288
289CXCursor cxcursor::MakeCursorTemplateRef(TemplateDecl *Template,
290                                         SourceLocation Loc,
291                                         CXTranslationUnit TU) {
292  assert(Template && TU && "Invalid arguments!");
293  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
294  CXCursor C = { CXCursor_TemplateRef, { Template, RawLoc, TU } };
295  return C;
296}
297
298std::pair<TemplateDecl *, SourceLocation>
299cxcursor::getCursorTemplateRef(CXCursor C) {
300  assert(C.kind == CXCursor_TemplateRef);
301  return std::make_pair(static_cast<TemplateDecl *>(C.data[0]),
302                        SourceLocation::getFromRawEncoding(
303                                       reinterpret_cast<uintptr_t>(C.data[1])));
304}
305
306CXCursor cxcursor::MakeCursorNamespaceRef(NamedDecl *NS, SourceLocation Loc,
307                                          CXTranslationUnit TU) {
308
309  assert(NS && (isa<NamespaceDecl>(NS) || isa<NamespaceAliasDecl>(NS)) && TU &&
310         "Invalid arguments!");
311  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
312  CXCursor C = { CXCursor_NamespaceRef, { NS, RawLoc, TU } };
313  return C;
314}
315
316std::pair<NamedDecl *, SourceLocation>
317cxcursor::getCursorNamespaceRef(CXCursor C) {
318  assert(C.kind == CXCursor_NamespaceRef);
319  return std::make_pair(static_cast<NamedDecl *>(C.data[0]),
320                        SourceLocation::getFromRawEncoding(
321                                       reinterpret_cast<uintptr_t>(C.data[1])));
322}
323
324CXCursor cxcursor::MakeCursorMemberRef(FieldDecl *Field, SourceLocation Loc,
325                                       CXTranslationUnit TU) {
326
327  assert(Field && TU && "Invalid arguments!");
328  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
329  CXCursor C = { CXCursor_MemberRef, { Field, RawLoc, TU } };
330  return C;
331}
332
333std::pair<FieldDecl *, SourceLocation>
334cxcursor::getCursorMemberRef(CXCursor C) {
335  assert(C.kind == CXCursor_MemberRef);
336  return std::make_pair(static_cast<FieldDecl *>(C.data[0]),
337                        SourceLocation::getFromRawEncoding(
338                                       reinterpret_cast<uintptr_t>(C.data[1])));
339}
340
341CXCursor cxcursor::MakeCursorCXXBaseSpecifier(CXXBaseSpecifier *B,
342                                              CXTranslationUnit TU){
343  CXCursor C = { CXCursor_CXXBaseSpecifier, { B, 0, TU } };
344  return C;
345}
346
347CXXBaseSpecifier *cxcursor::getCursorCXXBaseSpecifier(CXCursor C) {
348  assert(C.kind == CXCursor_CXXBaseSpecifier);
349  return static_cast<CXXBaseSpecifier*>(C.data[0]);
350}
351
352CXCursor cxcursor::MakePreprocessingDirectiveCursor(SourceRange Range,
353                                                    CXTranslationUnit TU) {
354  CXCursor C = { CXCursor_PreprocessingDirective,
355                 { reinterpret_cast<void *>(Range.getBegin().getRawEncoding()),
356                   reinterpret_cast<void *>(Range.getEnd().getRawEncoding()),
357                   TU }
358               };
359  return C;
360}
361
362SourceRange cxcursor::getCursorPreprocessingDirective(CXCursor C) {
363  assert(C.kind == CXCursor_PreprocessingDirective);
364  return SourceRange(SourceLocation::getFromRawEncoding(
365                                      reinterpret_cast<uintptr_t> (C.data[0])),
366                     SourceLocation::getFromRawEncoding(
367                                      reinterpret_cast<uintptr_t> (C.data[1])));
368}
369
370CXCursor cxcursor::MakeMacroDefinitionCursor(MacroDefinition *MI,
371                                             CXTranslationUnit TU) {
372  CXCursor C = { CXCursor_MacroDefinition, { MI, 0, TU } };
373  return C;
374}
375
376MacroDefinition *cxcursor::getCursorMacroDefinition(CXCursor C) {
377  assert(C.kind == CXCursor_MacroDefinition);
378  return static_cast<MacroDefinition *>(C.data[0]);
379}
380
381CXCursor cxcursor::MakeMacroInstantiationCursor(MacroInstantiation *MI,
382                                                CXTranslationUnit TU) {
383  CXCursor C = { CXCursor_MacroInstantiation, { MI, 0, TU } };
384  return C;
385}
386
387MacroInstantiation *cxcursor::getCursorMacroInstantiation(CXCursor C) {
388  assert(C.kind == CXCursor_MacroInstantiation);
389  return static_cast<MacroInstantiation *>(C.data[0]);
390}
391
392CXCursor cxcursor::MakeInclusionDirectiveCursor(InclusionDirective *ID,
393                                                CXTranslationUnit TU) {
394  CXCursor C = { CXCursor_InclusionDirective, { ID, 0, TU } };
395  return C;
396}
397
398InclusionDirective *cxcursor::getCursorInclusionDirective(CXCursor C) {
399  assert(C.kind == CXCursor_InclusionDirective);
400  return static_cast<InclusionDirective *>(C.data[0]);
401}
402
403CXCursor cxcursor::MakeCursorLabelRef(LabelStmt *Label, SourceLocation Loc,
404                                      CXTranslationUnit TU) {
405
406  assert(Label && TU && "Invalid arguments!");
407  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
408  CXCursor C = { CXCursor_LabelRef, { Label, RawLoc, TU } };
409  return C;
410}
411
412std::pair<LabelStmt*, SourceLocation>
413cxcursor::getCursorLabelRef(CXCursor C) {
414  assert(C.kind == CXCursor_LabelRef);
415  return std::make_pair(static_cast<LabelStmt *>(C.data[0]),
416                        SourceLocation::getFromRawEncoding(
417                                       reinterpret_cast<uintptr_t>(C.data[1])));
418}
419
420CXCursor cxcursor::MakeCursorOverloadedDeclRef(OverloadExpr *E,
421                                               CXTranslationUnit TU) {
422  assert(E && TU && "Invalid arguments!");
423  OverloadedDeclRefStorage Storage(E);
424  void *RawLoc = reinterpret_cast<void *>(E->getNameLoc().getRawEncoding());
425  CXCursor C = {
426                 CXCursor_OverloadedDeclRef,
427                 { Storage.getOpaqueValue(), RawLoc, TU }
428               };
429  return C;
430}
431
432CXCursor cxcursor::MakeCursorOverloadedDeclRef(Decl *D,
433                                               SourceLocation Loc,
434                                               CXTranslationUnit TU) {
435  assert(D && TU && "Invalid arguments!");
436  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
437  OverloadedDeclRefStorage Storage(D);
438  CXCursor C = {
439    CXCursor_OverloadedDeclRef,
440    { Storage.getOpaqueValue(), RawLoc, TU }
441  };
442  return C;
443}
444
445CXCursor cxcursor::MakeCursorOverloadedDeclRef(TemplateName Name,
446                                               SourceLocation Loc,
447                                               CXTranslationUnit TU) {
448  assert(Name.getAsOverloadedTemplate() && TU && "Invalid arguments!");
449  void *RawLoc = reinterpret_cast<void *>(Loc.getRawEncoding());
450  OverloadedDeclRefStorage Storage(Name.getAsOverloadedTemplate());
451  CXCursor C = {
452    CXCursor_OverloadedDeclRef,
453    { Storage.getOpaqueValue(), RawLoc, TU }
454  };
455  return C;
456}
457
458std::pair<cxcursor::OverloadedDeclRefStorage, SourceLocation>
459cxcursor::getCursorOverloadedDeclRef(CXCursor C) {
460  assert(C.kind == CXCursor_OverloadedDeclRef);
461  return std::make_pair(OverloadedDeclRefStorage::getFromOpaqueValue(C.data[0]),
462                        SourceLocation::getFromRawEncoding(
463                                       reinterpret_cast<uintptr_t>(C.data[1])));
464}
465
466Decl *cxcursor::getCursorDecl(CXCursor Cursor) {
467  return (Decl *)Cursor.data[0];
468}
469
470Expr *cxcursor::getCursorExpr(CXCursor Cursor) {
471  return dyn_cast_or_null<Expr>(getCursorStmt(Cursor));
472}
473
474Stmt *cxcursor::getCursorStmt(CXCursor Cursor) {
475  if (Cursor.kind == CXCursor_ObjCSuperClassRef ||
476      Cursor.kind == CXCursor_ObjCProtocolRef ||
477      Cursor.kind == CXCursor_ObjCClassRef)
478    return 0;
479
480  return (Stmt *)Cursor.data[1];
481}
482
483Attr *cxcursor::getCursorAttr(CXCursor Cursor) {
484  return (Attr *)Cursor.data[1];
485}
486
487Decl *cxcursor::getCursorParentDecl(CXCursor Cursor) {
488  return (Decl *)Cursor.data[0];
489}
490
491ASTContext &cxcursor::getCursorContext(CXCursor Cursor) {
492  return getCursorASTUnit(Cursor)->getASTContext();
493}
494
495ASTUnit *cxcursor::getCursorASTUnit(CXCursor Cursor) {
496  return static_cast<ASTUnit *>(static_cast<CXTranslationUnit>(Cursor.data[2])
497                                  ->TUData);
498}
499
500CXTranslationUnit cxcursor::getCursorTU(CXCursor Cursor) {
501  return static_cast<CXTranslationUnit>(Cursor.data[2]);
502}
503
504bool cxcursor::operator==(CXCursor X, CXCursor Y) {
505  return X.kind == Y.kind && X.data[0] == Y.data[0] && X.data[1] == Y.data[1] &&
506         X.data[2] == Y.data[2];
507}
508
509// FIXME: Remove once we can model DeclGroups and their appropriate ranges
510// properly in the ASTs.
511bool cxcursor::isFirstInDeclGroup(CXCursor C) {
512  assert(clang_isDeclaration(C.kind));
513  return ((uintptr_t) (C.data[1])) != 0;
514}
515
516//===----------------------------------------------------------------------===//
517// CXCursorSet.
518//===----------------------------------------------------------------------===//
519
520typedef llvm::DenseMap<CXCursor, unsigned> CXCursorSet_Impl;
521
522static inline CXCursorSet packCXCursorSet(CXCursorSet_Impl *setImpl) {
523  return (CXCursorSet) setImpl;
524}
525static inline CXCursorSet_Impl *unpackCXCursorSet(CXCursorSet set) {
526  return (CXCursorSet_Impl*) set;
527}
528namespace llvm {
529template<> struct DenseMapInfo<CXCursor> {
530public:
531  static inline CXCursor getEmptyKey() {
532    return MakeCXCursorInvalid(CXCursor_InvalidFile);
533  }
534  static inline CXCursor getTombstoneKey() {
535    return MakeCXCursorInvalid(CXCursor_NoDeclFound);
536  }
537  static inline unsigned getHashValue(const CXCursor &cursor) {
538    return llvm::DenseMapInfo<std::pair<void*,void*> >
539      ::getHashValue(std::make_pair(cursor.data[0], cursor.data[1]));
540  }
541  static inline bool isEqual(const CXCursor &x, const CXCursor &y) {
542    return x.kind == y.kind &&
543           x.data[0] == y.data[0] &&
544           x.data[1] == y.data[1];
545  }
546};
547}
548
549extern "C" {
550CXCursorSet clang_createCXCursorSet() {
551  return packCXCursorSet(new CXCursorSet_Impl());
552}
553
554void clang_disposeCXCursorSet(CXCursorSet set) {
555  delete unpackCXCursorSet(set);
556}
557
558unsigned clang_CXCursorSet_contains(CXCursorSet set, CXCursor cursor) {
559  CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
560  if (!setImpl)
561    return 0;
562  return setImpl->find(cursor) == setImpl->end();
563}
564
565unsigned clang_CXCursorSet_insert(CXCursorSet set, CXCursor cursor) {
566  // Do not insert invalid cursors into the set.
567  if (cursor.kind >= CXCursor_FirstInvalid &&
568      cursor.kind <= CXCursor_LastInvalid)
569    return 1;
570
571  CXCursorSet_Impl *setImpl = unpackCXCursorSet(set);
572  if (!setImpl)
573    return 1;
574  unsigned &entry = (*setImpl)[cursor];
575  unsigned flag = entry == 0 ? 1 : 0;
576  entry = 1;
577  return flag;
578}
579} // end: extern "C"
580