IndexingContext.cpp revision f59edb96b2d0bfe612b732f19519ab84bb995bd4 
1//===- IndexingContext.cpp - Higher level API functions -------------------===//
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#include "IndexingContext.h"
11#include "CIndexDiagnostic.h"
12#include "CXTranslationUnit.h"
13#include "clang/AST/DeclCXX.h"
14#include "clang/AST/DeclTemplate.h"
15#include "clang/Frontend/ASTUnit.h"
16
17using namespace clang;
18using namespace cxindex;
19using namespace cxcursor;
20
21IndexingContext::ObjCProtocolListInfo::ObjCProtocolListInfo(
22                                    const ObjCProtocolList &ProtList,
23                                    IndexingContext &IdxCtx,
24                                    ScratchAlloc &SA) {
25  ObjCInterfaceDecl::protocol_loc_iterator LI = ProtList.loc_begin();
26  for (ObjCInterfaceDecl::protocol_iterator
27         I = ProtList.begin(), E = ProtList.end(); I != E; ++I, ++LI) {
28    SourceLocation Loc = *LI;
29    ObjCProtocolDecl *PD = *I;
30    ProtEntities.push_back(EntityInfo());
31    IdxCtx.getEntityInfo(PD, ProtEntities.back(), SA);
32    CXIdxObjCProtocolRefInfo ProtInfo = { 0,
33                                MakeCursorObjCProtocolRef(PD, Loc, IdxCtx.CXTU),
34                                IdxCtx.getIndexLoc(Loc) };
35    ProtInfos.push_back(ProtInfo);
36
37    if (IdxCtx.shouldSuppressRefs())
38      IdxCtx.markEntityOccurrenceInFile(PD, Loc);
39  }
40
41  for (unsigned i = 0, e = ProtInfos.size(); i != e; ++i)
42    ProtInfos[i].protocol = &ProtEntities[i];
43
44  for (unsigned i = 0, e = ProtInfos.size(); i != e; ++i)
45    Prots.push_back(&ProtInfos[i]);
46}
47
48
49IBOutletCollectionInfo::IBOutletCollectionInfo(
50                                          const IBOutletCollectionInfo &other)
51  : AttrInfo(CXIdxAttr_IBOutletCollection, other.cursor, other.loc, other.A) {
52
53  IBCollInfo.attrInfo = this;
54  IBCollInfo.classCursor = other.IBCollInfo.classCursor;
55  IBCollInfo.classLoc = other.IBCollInfo.classLoc;
56  if (other.IBCollInfo.objcClass) {
57    ClassInfo = other.ClassInfo;
58    IBCollInfo.objcClass = &ClassInfo;
59  } else
60    IBCollInfo.objcClass = 0;
61}
62
63AttrListInfo::AttrListInfo(const Decl *D, IndexingContext &IdxCtx)
64  : SA(IdxCtx), ref_cnt(0) {
65
66  if (!D->hasAttrs())
67    return;
68
69  for (AttrVec::const_iterator AttrI = D->attr_begin(), AttrE = D->attr_end();
70         AttrI != AttrE; ++AttrI) {
71    const Attr *A = *AttrI;
72    CXCursor C = MakeCXCursor(A, const_cast<Decl *>(D), IdxCtx.CXTU);
73    CXIdxLoc Loc =  IdxCtx.getIndexLoc(A->getLocation());
74    switch (C.kind) {
75    default:
76      Attrs.push_back(AttrInfo(CXIdxAttr_Unexposed, C, Loc, A));
77      break;
78    case CXCursor_IBActionAttr:
79      Attrs.push_back(AttrInfo(CXIdxAttr_IBAction, C, Loc, A));
80      break;
81    case CXCursor_IBOutletAttr:
82      Attrs.push_back(AttrInfo(CXIdxAttr_IBOutlet, C, Loc, A));
83      break;
84    case CXCursor_IBOutletCollectionAttr:
85      IBCollAttrs.push_back(IBOutletCollectionInfo(C, Loc, A));
86      break;
87    }
88  }
89
90  for (unsigned i = 0, e = IBCollAttrs.size(); i != e; ++i) {
91    IBOutletCollectionInfo &IBInfo = IBCollAttrs[i];
92    CXAttrs.push_back(&IBInfo);
93
94    const IBOutletCollectionAttr *
95      IBAttr = cast<IBOutletCollectionAttr>(IBInfo.A);
96    IBInfo.IBCollInfo.attrInfo = &IBInfo;
97    IBInfo.IBCollInfo.classLoc = IdxCtx.getIndexLoc(IBAttr->getInterfaceLoc());
98    IBInfo.IBCollInfo.objcClass = 0;
99    IBInfo.IBCollInfo.classCursor = clang_getNullCursor();
100    QualType Ty = IBAttr->getInterface();
101    if (const ObjCInterfaceType *InterTy = Ty->getAs<ObjCInterfaceType>()) {
102      if (const ObjCInterfaceDecl *InterD = InterTy->getInterface()) {
103        IdxCtx.getEntityInfo(InterD, IBInfo.ClassInfo, SA);
104        IBInfo.IBCollInfo.objcClass = &IBInfo.ClassInfo;
105        IBInfo.IBCollInfo.classCursor = MakeCursorObjCClassRef(InterD,
106                                        IBAttr->getInterfaceLoc(), IdxCtx.CXTU);
107      }
108    }
109  }
110
111  for (unsigned i = 0, e = Attrs.size(); i != e; ++i)
112    CXAttrs.push_back(&Attrs[i]);
113}
114
115IntrusiveRefCntPtr<AttrListInfo>
116AttrListInfo::create(const Decl *D, IndexingContext &IdxCtx) {
117  ScratchAlloc SA(IdxCtx);
118  AttrListInfo *attrs = SA.allocate<AttrListInfo>();
119  return new (attrs) AttrListInfo(D, IdxCtx);
120}
121
122IndexingContext::CXXBasesListInfo::CXXBasesListInfo(const CXXRecordDecl *D,
123                                   IndexingContext &IdxCtx,
124                                   ScratchAlloc &SA) {
125  for (CXXRecordDecl::base_class_const_iterator
126         I = D->bases_begin(), E = D->bases_end(); I != E; ++I) {
127    const CXXBaseSpecifier &Base = *I;
128    BaseEntities.push_back(EntityInfo());
129    const NamedDecl *BaseD = 0;
130    QualType T = Base.getType();
131    SourceLocation Loc = getBaseLoc(Base);
132
133    if (const TypedefType *TDT = T->getAs<TypedefType>()) {
134      BaseD = TDT->getDecl();
135    } else if (const TemplateSpecializationType *
136          TST = T->getAs<TemplateSpecializationType>()) {
137      BaseD = TST->getTemplateName().getAsTemplateDecl();
138    } else if (const RecordType *RT = T->getAs<RecordType>()) {
139      BaseD = RT->getDecl();
140    }
141
142    if (BaseD)
143      IdxCtx.getEntityInfo(BaseD, BaseEntities.back(), SA);
144    CXIdxBaseClassInfo BaseInfo = { 0,
145                         MakeCursorCXXBaseSpecifier(&Base, IdxCtx.CXTU),
146                         IdxCtx.getIndexLoc(Loc) };
147    BaseInfos.push_back(BaseInfo);
148  }
149
150  for (unsigned i = 0, e = BaseInfos.size(); i != e; ++i) {
151    if (BaseEntities[i].name && BaseEntities[i].USR)
152      BaseInfos[i].base = &BaseEntities[i];
153  }
154
155  for (unsigned i = 0, e = BaseInfos.size(); i != e; ++i)
156    CXBases.push_back(&BaseInfos[i]);
157}
158
159SourceLocation IndexingContext::CXXBasesListInfo::getBaseLoc(
160                                           const CXXBaseSpecifier &Base) const {
161  SourceLocation Loc = Base.getSourceRange().getBegin();
162  TypeLoc TL;
163  if (Base.getTypeSourceInfo())
164    TL = Base.getTypeSourceInfo()->getTypeLoc();
165  if (TL.isNull())
166    return Loc;
167
168  if (const QualifiedTypeLoc *QL = dyn_cast<QualifiedTypeLoc>(&TL))
169    TL = QL->getUnqualifiedLoc();
170
171  if (const ElaboratedTypeLoc *EL = dyn_cast<ElaboratedTypeLoc>(&TL))
172    return EL->getNamedTypeLoc().getBeginLoc();
173  if (const DependentNameTypeLoc *DL = dyn_cast<DependentNameTypeLoc>(&TL))
174    return DL->getNameLoc();
175  if (const DependentTemplateSpecializationTypeLoc *
176        DTL = dyn_cast<DependentTemplateSpecializationTypeLoc>(&TL))
177    return DTL->getTemplateNameLoc();
178
179  return Loc;
180}
181
182const char *ScratchAlloc::toCStr(StringRef Str) {
183  if (Str.empty())
184    return "";
185  if (Str.data()[Str.size()] == '\0')
186    return Str.data();
187  return copyCStr(Str);
188}
189
190const char *ScratchAlloc::copyCStr(StringRef Str) {
191  char *buf = IdxCtx.StrScratch.Allocate<char>(Str.size() + 1);
192  std::uninitialized_copy(Str.begin(), Str.end(), buf);
193  buf[Str.size()] = '\0';
194  return buf;
195}
196
197void IndexingContext::setASTContext(ASTContext &ctx) {
198  Ctx = &ctx;
199  static_cast<ASTUnit*>(CXTU->TUData)->setASTContext(&ctx);
200}
201
202void IndexingContext::setPreprocessor(Preprocessor &PP) {
203  static_cast<ASTUnit*>(CXTU->TUData)->setPreprocessor(&PP);
204}
205
206bool IndexingContext::isFunctionLocalDecl(const Decl *D) {
207  assert(D);
208
209  if (!D->getParentFunctionOrMethod())
210    return false;
211
212  if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
213    switch (ND->getLinkage()) {
214    case NoLinkage:
215    case InternalLinkage:
216      return true;
217    case UniqueExternalLinkage:
218    case ExternalLinkage:
219      return false;
220    }
221  }
222
223  return true;
224}
225
226bool IndexingContext::shouldAbort() {
227  if (!CB.abortQuery)
228    return false;
229  return CB.abortQuery(ClientData, 0);
230}
231
232void IndexingContext::enteredMainFile(const FileEntry *File) {
233  if (File && CB.enteredMainFile) {
234    CXIdxClientFile idxFile = CB.enteredMainFile(ClientData, (CXFile)File, 0);
235    FileMap[File] = idxFile;
236  }
237}
238
239void IndexingContext::ppIncludedFile(SourceLocation hashLoc,
240                                     StringRef filename,
241                                     const FileEntry *File,
242                                     bool isImport, bool isAngled,
243                                     bool isModuleImport) {
244  if (!CB.ppIncludedFile)
245    return;
246
247  ScratchAlloc SA(*this);
248  CXIdxIncludedFileInfo Info = { getIndexLoc(hashLoc),
249                                 SA.toCStr(filename),
250                                 (CXFile)File,
251                                 isImport, isAngled, isModuleImport };
252  CXIdxClientFile idxFile = CB.ppIncludedFile(ClientData, &Info);
253  FileMap[File] = idxFile;
254}
255
256void IndexingContext::importedModule(const ImportDecl *ImportD) {
257  if (!CB.importedASTFile)
258    return;
259
260  Module *Mod = ImportD->getImportedModule();
261  if (!Mod)
262    return;
263  std::string ModuleName = Mod->getFullModuleName();
264
265  CXIdxImportedASTFileInfo Info = {
266                                    (CXFile)Mod->getASTFile(),
267                                    Mod,
268                                    getIndexLoc(ImportD->getLocation()),
269                                    ImportD->isImplicit()
270                                  };
271  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
272  (void)astFile;
273}
274
275void IndexingContext::importedPCH(const FileEntry *File) {
276  if (!CB.importedASTFile)
277    return;
278
279  CXIdxImportedASTFileInfo Info = {
280                                    (CXFile)File,
281                                    /*module=*/NULL,
282                                    getIndexLoc(SourceLocation()),
283                                    /*isImplicit=*/false
284                                  };
285  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
286  (void)astFile;
287}
288
289void IndexingContext::startedTranslationUnit() {
290  CXIdxClientContainer idxCont = 0;
291  if (CB.startedTranslationUnit)
292    idxCont = CB.startedTranslationUnit(ClientData, 0);
293  addContainerInMap(Ctx->getTranslationUnitDecl(), idxCont);
294}
295
296void IndexingContext::handleDiagnosticSet(CXDiagnostic CXDiagSet) {
297  if (!CB.diagnostic)
298    return;
299
300  CB.diagnostic(ClientData, CXDiagSet, 0);
301}
302
303bool IndexingContext::handleDecl(const NamedDecl *D,
304                                 SourceLocation Loc, CXCursor Cursor,
305                                 DeclInfo &DInfo,
306                                 const DeclContext *LexicalDC) {
307  if (!CB.indexDeclaration || !D)
308    return false;
309  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
310    return false;
311
312  ScratchAlloc SA(*this);
313  getEntityInfo(D, DInfo.EntInfo, SA);
314  if ((!shouldIndexFunctionLocalSymbols() && !DInfo.EntInfo.USR)
315      || Loc.isInvalid())
316    return false;
317
318  if (!LexicalDC)
319    LexicalDC = D->getLexicalDeclContext();
320
321  if (shouldSuppressRefs())
322    markEntityOccurrenceInFile(D, Loc);
323
324  DInfo.entityInfo = &DInfo.EntInfo;
325  DInfo.cursor = Cursor;
326  DInfo.loc = getIndexLoc(Loc);
327  DInfo.isImplicit = D->isImplicit();
328
329  DInfo.attributes = DInfo.EntInfo.attributes;
330  DInfo.numAttributes = DInfo.EntInfo.numAttributes;
331
332  getContainerInfo(D->getDeclContext(), DInfo.SemanticContainer);
333  DInfo.semanticContainer = &DInfo.SemanticContainer;
334
335  if (LexicalDC == D->getDeclContext()) {
336    DInfo.lexicalContainer = &DInfo.SemanticContainer;
337  } else if (isTemplateImplicitInstantiation(D)) {
338    // Implicit instantiations have the lexical context of where they were
339    // instantiated first. We choose instead the semantic context because:
340    // 1) at the time that we see the instantiation we have not seen the
341    //   function where it occurred yet.
342    // 2) the lexical context of the first instantiation is not useful
343    //   information anyway.
344    DInfo.lexicalContainer = &DInfo.SemanticContainer;
345  } else {
346    getContainerInfo(LexicalDC, DInfo.LexicalContainer);
347    DInfo.lexicalContainer = &DInfo.LexicalContainer;
348  }
349
350  if (DInfo.isContainer) {
351    getContainerInfo(getEntityContainer(D), DInfo.DeclAsContainer);
352    DInfo.declAsContainer = &DInfo.DeclAsContainer;
353  }
354
355  CB.indexDeclaration(ClientData, &DInfo);
356  return true;
357}
358
359bool IndexingContext::handleObjCContainer(const ObjCContainerDecl *D,
360                                          SourceLocation Loc, CXCursor Cursor,
361                                          ObjCContainerDeclInfo &ContDInfo) {
362  ContDInfo.ObjCContDeclInfo.declInfo = &ContDInfo;
363  return handleDecl(D, Loc, Cursor, ContDInfo);
364}
365
366bool IndexingContext::handleFunction(const FunctionDecl *D) {
367  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
368                 D->isThisDeclarationADefinition());
369  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
370}
371
372bool IndexingContext::handleVar(const VarDecl *D) {
373  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
374                 /*isContainer=*/false);
375  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
376}
377
378bool IndexingContext::handleField(const FieldDecl *D) {
379  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
380                 /*isContainer=*/false);
381  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
382}
383
384bool IndexingContext::handleEnumerator(const EnumConstantDecl *D) {
385  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
386                 /*isContainer=*/false);
387  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
388}
389
390bool IndexingContext::handleTagDecl(const TagDecl *D) {
391  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(D))
392    return handleCXXRecordDecl(CXXRD, D);
393
394  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
395                 D->isThisDeclarationADefinition());
396  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
397}
398
399bool IndexingContext::handleTypedefName(const TypedefNameDecl *D) {
400  DeclInfo DInfo(!D->isFirstDeclaration(), /*isDefinition=*/true,
401                 /*isContainer=*/false);
402  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
403}
404
405bool IndexingContext::handleObjCInterface(const ObjCInterfaceDecl *D) {
406  // For @class forward declarations, suppress them the same way as references.
407  if (!D->isThisDeclarationADefinition()) {
408    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
409      return false; // already occurred.
410
411    // FIXME: This seems like the wrong definition for redeclaration.
412    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
413    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true, isRedeclaration,
414                                    /*isImplementation=*/false);
415    return handleObjCContainer(D, D->getLocation(),
416                               MakeCursorObjCClassRef(D, D->getLocation(),
417                                                      CXTU),
418                               ContDInfo);
419  }
420
421  ScratchAlloc SA(*this);
422
423  CXIdxBaseClassInfo BaseClass;
424  EntityInfo BaseEntity;
425  BaseClass.cursor = clang_getNullCursor();
426  if (ObjCInterfaceDecl *SuperD = D->getSuperClass()) {
427    getEntityInfo(SuperD, BaseEntity, SA);
428    SourceLocation SuperLoc = D->getSuperClassLoc();
429    BaseClass.base = &BaseEntity;
430    BaseClass.cursor = MakeCursorObjCSuperClassRef(SuperD, SuperLoc, CXTU);
431    BaseClass.loc = getIndexLoc(SuperLoc);
432
433    if (shouldSuppressRefs())
434      markEntityOccurrenceInFile(SuperD, SuperLoc);
435  }
436
437  ObjCProtocolList EmptyProtoList;
438  ObjCProtocolListInfo ProtInfo(D->isThisDeclarationADefinition()
439                                  ? D->getReferencedProtocols()
440                                  : EmptyProtoList,
441                                *this, SA);
442
443  ObjCInterfaceDeclInfo InterInfo(D);
444  InterInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
445  InterInfo.ObjCInterDeclInfo.containerInfo = &InterInfo.ObjCContDeclInfo;
446  InterInfo.ObjCInterDeclInfo.superInfo = D->getSuperClass() ? &BaseClass : 0;
447  InterInfo.ObjCInterDeclInfo.protocols = &InterInfo.ObjCProtoListInfo;
448
449  return handleObjCContainer(D, D->getLocation(), getCursor(D), InterInfo);
450}
451
452bool IndexingContext::handleObjCImplementation(
453                                              const ObjCImplementationDecl *D) {
454  ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/false,
455                      /*isRedeclaration=*/true,
456                      /*isImplementation=*/true);
457  return handleObjCContainer(D, D->getLocation(), getCursor(D), ContDInfo);
458}
459
460bool IndexingContext::handleObjCProtocol(const ObjCProtocolDecl *D) {
461  if (!D->isThisDeclarationADefinition()) {
462    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
463      return false; // already occurred.
464
465    // FIXME: This seems like the wrong definition for redeclaration.
466    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
467    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true,
468                                    isRedeclaration,
469                                    /*isImplementation=*/false);
470    return handleObjCContainer(D, D->getLocation(),
471                               MakeCursorObjCProtocolRef(D, D->getLocation(),
472                                                         CXTU),
473                               ContDInfo);
474  }
475
476  ScratchAlloc SA(*this);
477  ObjCProtocolList EmptyProtoList;
478  ObjCProtocolListInfo ProtListInfo(D->isThisDeclarationADefinition()
479                                      ? D->getReferencedProtocols()
480                                      : EmptyProtoList,
481                                    *this, SA);
482
483  ObjCProtocolDeclInfo ProtInfo(D);
484  ProtInfo.ObjCProtoRefListInfo = ProtListInfo.getListInfo();
485
486  return handleObjCContainer(D, D->getLocation(), getCursor(D), ProtInfo);
487}
488
489bool IndexingContext::handleObjCCategory(const ObjCCategoryDecl *D) {
490  ScratchAlloc SA(*this);
491
492  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/false);
493  EntityInfo ClassEntity;
494  const ObjCInterfaceDecl *IFaceD = D->getClassInterface();
495  SourceLocation ClassLoc = D->getLocation();
496  SourceLocation CategoryLoc = D->IsClassExtension() ? ClassLoc
497                                                     : D->getCategoryNameLoc();
498  getEntityInfo(IFaceD, ClassEntity, SA);
499
500  if (shouldSuppressRefs())
501    markEntityOccurrenceInFile(IFaceD, ClassLoc);
502
503  ObjCProtocolListInfo ProtInfo(D->getReferencedProtocols(), *this, SA);
504
505  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
506  if (IFaceD) {
507    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
508    CatDInfo.ObjCCatDeclInfo.classCursor =
509        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
510  } else {
511    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
512    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
513  }
514  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
515  CatDInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
516  CatDInfo.ObjCCatDeclInfo.protocols = &CatDInfo.ObjCProtoListInfo;
517
518  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
519}
520
521bool IndexingContext::handleObjCCategoryImpl(const ObjCCategoryImplDecl *D) {
522  ScratchAlloc SA(*this);
523
524  const ObjCCategoryDecl *CatD = D->getCategoryDecl();
525  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/true);
526  EntityInfo ClassEntity;
527  const ObjCInterfaceDecl *IFaceD = CatD->getClassInterface();
528  SourceLocation ClassLoc = D->getLocation();
529  SourceLocation CategoryLoc = D->getCategoryNameLoc();
530  getEntityInfo(IFaceD, ClassEntity, SA);
531
532  if (shouldSuppressRefs())
533    markEntityOccurrenceInFile(IFaceD, ClassLoc);
534
535  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
536  if (IFaceD) {
537    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
538    CatDInfo.ObjCCatDeclInfo.classCursor =
539        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
540  } else {
541    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
542    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
543  }
544  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
545  CatDInfo.ObjCCatDeclInfo.protocols = 0;
546
547  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
548}
549
550bool IndexingContext::handleObjCMethod(const ObjCMethodDecl *D) {
551  DeclInfo DInfo(!D->isCanonicalDecl(), D->isThisDeclarationADefinition(),
552                 D->isThisDeclarationADefinition());
553  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
554}
555
556bool IndexingContext::handleSynthesizedObjCProperty(
557                                                const ObjCPropertyImplDecl *D) {
558  ObjCPropertyDecl *PD = D->getPropertyDecl();
559  return handleReference(PD, D->getLocation(), getCursor(D), 0, D->getDeclContext());
560}
561
562bool IndexingContext::handleSynthesizedObjCMethod(const ObjCMethodDecl *D,
563                                                  SourceLocation Loc,
564                                                 const DeclContext *LexicalDC) {
565  DeclInfo DInfo(/*isRedeclaration=*/true, /*isDefinition=*/true,
566                 /*isContainer=*/false);
567  return handleDecl(D, Loc, getCursor(D), DInfo, LexicalDC);
568}
569
570bool IndexingContext::handleObjCProperty(const ObjCPropertyDecl *D) {
571  ScratchAlloc SA(*this);
572
573  ObjCPropertyDeclInfo DInfo;
574  EntityInfo GetterEntity;
575  EntityInfo SetterEntity;
576
577  DInfo.ObjCPropDeclInfo.declInfo = &DInfo;
578
579  if (ObjCMethodDecl *Getter = D->getGetterMethodDecl()) {
580    getEntityInfo(Getter, GetterEntity, SA);
581    DInfo.ObjCPropDeclInfo.getter = &GetterEntity;
582  } else {
583    DInfo.ObjCPropDeclInfo.getter = 0;
584  }
585  if (ObjCMethodDecl *Setter = D->getSetterMethodDecl()) {
586    getEntityInfo(Setter, SetterEntity, SA);
587    DInfo.ObjCPropDeclInfo.setter = &SetterEntity;
588  } else {
589    DInfo.ObjCPropDeclInfo.setter = 0;
590  }
591
592  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
593}
594
595bool IndexingContext::handleNamespace(const NamespaceDecl *D) {
596  DeclInfo DInfo(/*isRedeclaration=*/!D->isOriginalNamespace(),
597                 /*isDefinition=*/true,
598                 /*isContainer=*/true);
599  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
600}
601
602bool IndexingContext::handleClassTemplate(const ClassTemplateDecl *D) {
603  return handleCXXRecordDecl(D->getTemplatedDecl(), D);
604}
605
606bool IndexingContext::handleFunctionTemplate(const FunctionTemplateDecl *D) {
607  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
608                 /*isDefinition=*/D->isThisDeclarationADefinition(),
609                 /*isContainer=*/D->isThisDeclarationADefinition());
610  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
611}
612
613bool IndexingContext::handleTypeAliasTemplate(const TypeAliasTemplateDecl *D) {
614  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
615                 /*isDefinition=*/true, /*isContainer=*/false);
616  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
617}
618
619bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
620                                      const NamedDecl *Parent,
621                                      const DeclContext *DC,
622                                      const Expr *E,
623                                      CXIdxEntityRefKind Kind) {
624  if (!D)
625    return false;
626
627  CXCursor Cursor = E ? MakeCXCursor(const_cast<Expr*>(E),
628                                     const_cast<Decl*>(cast<Decl>(DC)), CXTU)
629                      : getRefCursor(D, Loc);
630  return handleReference(D, Loc, Cursor, Parent, DC, E, Kind);
631}
632
633bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
634                                      CXCursor Cursor,
635                                      const NamedDecl *Parent,
636                                      const DeclContext *DC,
637                                      const Expr *E,
638                                      CXIdxEntityRefKind Kind) {
639  if (!CB.indexEntityReference)
640    return false;
641
642  if (!D)
643    return false;
644  if (Loc.isInvalid())
645    return false;
646  if (!shouldIndexFunctionLocalSymbols() && isFunctionLocalDecl(D))
647    return false;
648  if (isNotFromSourceFile(D->getLocation()))
649    return false;
650  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
651    return false;
652
653  if (shouldSuppressRefs()) {
654    if (markEntityOccurrenceInFile(D, Loc))
655      return false; // already occurred.
656  }
657
658  ScratchAlloc SA(*this);
659  EntityInfo RefEntity, ParentEntity;
660  getEntityInfo(D, RefEntity, SA);
661  if (!RefEntity.USR)
662    return false;
663
664  getEntityInfo(Parent, ParentEntity, SA);
665
666  ContainerInfo Container;
667  getContainerInfo(DC, Container);
668
669  CXIdxEntityRefInfo Info = { Kind,
670                              Cursor,
671                              getIndexLoc(Loc),
672                              &RefEntity,
673                              Parent ? &ParentEntity : 0,
674                              &Container };
675  CB.indexEntityReference(ClientData, &Info);
676  return true;
677}
678
679bool IndexingContext::isNotFromSourceFile(SourceLocation Loc) const {
680  if (Loc.isInvalid())
681    return true;
682  SourceManager &SM = Ctx->getSourceManager();
683  SourceLocation FileLoc = SM.getFileLoc(Loc);
684  FileID FID = SM.getFileID(FileLoc);
685  return SM.getFileEntryForID(FID) == 0;
686}
687
688void IndexingContext::addContainerInMap(const DeclContext *DC,
689                                        CXIdxClientContainer container) {
690  if (!DC)
691    return;
692
693  ContainerMapTy::iterator I = ContainerMap.find(DC);
694  if (I == ContainerMap.end()) {
695    if (container)
696      ContainerMap[DC] = container;
697    return;
698  }
699  // Allow changing the container of a previously seen DeclContext so we
700  // can handle invalid user code, like a function re-definition.
701  if (container)
702    I->second = container;
703  else
704    ContainerMap.erase(I);
705}
706
707CXIdxClientEntity IndexingContext::getClientEntity(const Decl *D) const {
708  if (!D)
709    return 0;
710  EntityMapTy::const_iterator I = EntityMap.find(D);
711  if (I == EntityMap.end())
712    return 0;
713  return I->second;
714}
715
716void IndexingContext::setClientEntity(const Decl *D, CXIdxClientEntity client) {
717  if (!D)
718    return;
719  EntityMap[D] = client;
720}
721
722bool IndexingContext::handleCXXRecordDecl(const CXXRecordDecl *RD,
723                                          const NamedDecl *OrigD) {
724  if (RD->isThisDeclarationADefinition()) {
725    ScratchAlloc SA(*this);
726    CXXClassDeclInfo CXXDInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
727                           /*isDefinition=*/RD->isThisDeclarationADefinition());
728    CXXBasesListInfo BaseList(RD, *this, SA);
729    CXXDInfo.CXXClassInfo.declInfo = &CXXDInfo;
730    CXXDInfo.CXXClassInfo.bases = BaseList.getBases();
731    CXXDInfo.CXXClassInfo.numBases = BaseList.getNumBases();
732
733    if (shouldSuppressRefs()) {
734      // Go through bases and mark them as referenced.
735      for (unsigned i = 0, e = BaseList.getNumBases(); i != e; ++i) {
736        const CXIdxBaseClassInfo *baseInfo = BaseList.getBases()[i];
737        if (baseInfo->base) {
738          const NamedDecl *BaseD = BaseList.BaseEntities[i].Dcl;
739          SourceLocation
740            Loc = SourceLocation::getFromRawEncoding(baseInfo->loc.int_data);
741          markEntityOccurrenceInFile(BaseD, Loc);
742        }
743      }
744    }
745
746    return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), CXXDInfo);
747  }
748
749  DeclInfo DInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
750                 /*isDefinition=*/RD->isThisDeclarationADefinition(),
751                 /*isContainer=*/RD->isThisDeclarationADefinition());
752  return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), DInfo);
753}
754
755bool IndexingContext::markEntityOccurrenceInFile(const NamedDecl *D,
756                                                 SourceLocation Loc) {
757  if (!D || Loc.isInvalid())
758    return true;
759
760  SourceManager &SM = Ctx->getSourceManager();
761  D = getEntityDecl(D);
762
763  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SM.getFileLoc(Loc));
764  FileID FID = LocInfo.first;
765  if (FID.isInvalid())
766    return true;
767
768  const FileEntry *FE = SM.getFileEntryForID(FID);
769  if (!FE)
770    return true;
771  RefFileOccurence RefOccur(FE, D);
772  std::pair<llvm::DenseSet<RefFileOccurence>::iterator, bool>
773  res = RefFileOccurences.insert(RefOccur);
774  if (!res.second)
775    return true; // already in map.
776
777  return false;
778}
779
780const NamedDecl *IndexingContext::getEntityDecl(const NamedDecl *D) const {
781  assert(D);
782  D = cast<NamedDecl>(D->getCanonicalDecl());
783
784  if (const ObjCImplementationDecl *
785               ImplD = dyn_cast<ObjCImplementationDecl>(D)) {
786    return getEntityDecl(ImplD->getClassInterface());
787
788  } else if (const ObjCCategoryImplDecl *
789               CatImplD = dyn_cast<ObjCCategoryImplDecl>(D)) {
790    return getEntityDecl(CatImplD->getCategoryDecl());
791  } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
792    if (FunctionTemplateDecl *TemplD = FD->getDescribedFunctionTemplate())
793      return getEntityDecl(TemplD);
794  } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
795    if (ClassTemplateDecl *TemplD = RD->getDescribedClassTemplate())
796      return getEntityDecl(TemplD);
797  }
798
799  return D;
800}
801
802const DeclContext *
803IndexingContext::getEntityContainer(const Decl *D) const {
804  const DeclContext *DC = dyn_cast<DeclContext>(D);
805  if (DC)
806    return DC;
807
808  if (const ClassTemplateDecl *ClassTempl = dyn_cast<ClassTemplateDecl>(D)) {
809    DC = ClassTempl->getTemplatedDecl();
810  } if (const FunctionTemplateDecl *
811          FuncTempl = dyn_cast<FunctionTemplateDecl>(D)) {
812    DC = FuncTempl->getTemplatedDecl();
813  }
814
815  return DC;
816}
817
818CXIdxClientContainer
819IndexingContext::getClientContainerForDC(const DeclContext *DC) const {
820  if (!DC)
821    return 0;
822
823  ContainerMapTy::const_iterator I = ContainerMap.find(DC);
824  if (I == ContainerMap.end())
825    return 0;
826
827  return I->second;
828}
829
830CXIdxClientFile IndexingContext::getIndexFile(const FileEntry *File) {
831  if (!File)
832    return 0;
833
834  FileMapTy::iterator FI = FileMap.find(File);
835  if (FI != FileMap.end())
836    return FI->second;
837
838  return 0;
839}
840
841CXIdxLoc IndexingContext::getIndexLoc(SourceLocation Loc) const {
842  CXIdxLoc idxLoc =  { {0, 0}, 0 };
843  if (Loc.isInvalid())
844    return idxLoc;
845
846  idxLoc.ptr_data[0] = (void*)this;
847  idxLoc.int_data = Loc.getRawEncoding();
848  return idxLoc;
849}
850
851void IndexingContext::translateLoc(SourceLocation Loc,
852                                   CXIdxClientFile *indexFile, CXFile *file,
853                                   unsigned *line, unsigned *column,
854                                   unsigned *offset) {
855  if (Loc.isInvalid())
856    return;
857
858  SourceManager &SM = Ctx->getSourceManager();
859  Loc = SM.getFileLoc(Loc);
860
861  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
862  FileID FID = LocInfo.first;
863  unsigned FileOffset = LocInfo.second;
864
865  if (FID.isInvalid())
866    return;
867
868  const FileEntry *FE = SM.getFileEntryForID(FID);
869  if (indexFile)
870    *indexFile = getIndexFile(FE);
871  if (file)
872    *file = (void *)FE;
873  if (line)
874    *line = SM.getLineNumber(FID, FileOffset);
875  if (column)
876    *column = SM.getColumnNumber(FID, FileOffset);
877  if (offset)
878    *offset = FileOffset;
879}
880
881void IndexingContext::getEntityInfo(const NamedDecl *D,
882                                    EntityInfo &EntityInfo,
883                                    ScratchAlloc &SA) {
884  if (!D)
885    return;
886
887  D = getEntityDecl(D);
888  EntityInfo.cursor = getCursor(D);
889  EntityInfo.Dcl = D;
890  EntityInfo.IndexCtx = this;
891  EntityInfo.kind = CXIdxEntity_Unexposed;
892  EntityInfo.templateKind = CXIdxEntity_NonTemplate;
893  EntityInfo.lang = CXIdxEntityLang_C;
894
895  if (D->hasAttrs()) {
896    EntityInfo.AttrList = AttrListInfo::create(D, *this);
897    EntityInfo.attributes = EntityInfo.AttrList->getAttrs();
898    EntityInfo.numAttributes = EntityInfo.AttrList->getNumAttrs();
899  }
900
901  if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
902    switch (TD->getTagKind()) {
903    case TTK_Struct:
904      EntityInfo.kind = CXIdxEntity_Struct; break;
905    case TTK_Union:
906      EntityInfo.kind = CXIdxEntity_Union; break;
907    case TTK_Class:
908      EntityInfo.kind = CXIdxEntity_CXXClass;
909      EntityInfo.lang = CXIdxEntityLang_CXX;
910      break;
911    case TTK_Interface:
912      EntityInfo.kind = CXIdxEntity_CXXInterface;
913      EntityInfo.lang = CXIdxEntityLang_CXX;
914      break;
915    case TTK_Enum:
916      EntityInfo.kind = CXIdxEntity_Enum; break;
917    }
918
919    if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D))
920      if (!CXXRec->isCLike())
921        EntityInfo.lang = CXIdxEntityLang_CXX;
922
923    if (isa<ClassTemplatePartialSpecializationDecl>(D)) {
924      EntityInfo.templateKind = CXIdxEntity_TemplatePartialSpecialization;
925    } else if (isa<ClassTemplateSpecializationDecl>(D)) {
926      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
927    }
928
929  } else {
930    switch (D->getKind()) {
931    case Decl::Typedef:
932      EntityInfo.kind = CXIdxEntity_Typedef; break;
933    case Decl::Function:
934      EntityInfo.kind = CXIdxEntity_Function;
935      break;
936    case Decl::ParmVar:
937      EntityInfo.kind = CXIdxEntity_Variable;
938      break;
939    case Decl::Var:
940      EntityInfo.kind = CXIdxEntity_Variable;
941      if (isa<CXXRecordDecl>(D->getDeclContext())) {
942        EntityInfo.kind = CXIdxEntity_CXXStaticVariable;
943        EntityInfo.lang = CXIdxEntityLang_CXX;
944      }
945      break;
946    case Decl::Field:
947      EntityInfo.kind = CXIdxEntity_Field;
948      if (const CXXRecordDecl *
949            CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {
950        // FIXME: isPOD check is not sufficient, a POD can contain methods,
951        // we want a isCStructLike check.
952        if (!CXXRec->isPOD())
953          EntityInfo.lang = CXIdxEntityLang_CXX;
954      }
955      break;
956    case Decl::EnumConstant:
957      EntityInfo.kind = CXIdxEntity_EnumConstant; break;
958    case Decl::ObjCInterface:
959      EntityInfo.kind = CXIdxEntity_ObjCClass;
960      EntityInfo.lang = CXIdxEntityLang_ObjC;
961      break;
962    case Decl::ObjCProtocol:
963      EntityInfo.kind = CXIdxEntity_ObjCProtocol;
964      EntityInfo.lang = CXIdxEntityLang_ObjC;
965      break;
966    case Decl::ObjCCategory:
967      EntityInfo.kind = CXIdxEntity_ObjCCategory;
968      EntityInfo.lang = CXIdxEntityLang_ObjC;
969      break;
970    case Decl::ObjCMethod:
971      if (cast<ObjCMethodDecl>(D)->isInstanceMethod())
972        EntityInfo.kind = CXIdxEntity_ObjCInstanceMethod;
973      else
974        EntityInfo.kind = CXIdxEntity_ObjCClassMethod;
975      EntityInfo.lang = CXIdxEntityLang_ObjC;
976      break;
977    case Decl::ObjCProperty:
978      EntityInfo.kind = CXIdxEntity_ObjCProperty;
979      EntityInfo.lang = CXIdxEntityLang_ObjC;
980      break;
981    case Decl::ObjCIvar:
982      EntityInfo.kind = CXIdxEntity_ObjCIvar;
983      EntityInfo.lang = CXIdxEntityLang_ObjC;
984      break;
985    case Decl::Namespace:
986      EntityInfo.kind = CXIdxEntity_CXXNamespace;
987      EntityInfo.lang = CXIdxEntityLang_CXX;
988      break;
989    case Decl::NamespaceAlias:
990      EntityInfo.kind = CXIdxEntity_CXXNamespaceAlias;
991      EntityInfo.lang = CXIdxEntityLang_CXX;
992      break;
993    case Decl::CXXConstructor:
994      EntityInfo.kind = CXIdxEntity_CXXConstructor;
995      EntityInfo.lang = CXIdxEntityLang_CXX;
996      break;
997    case Decl::CXXDestructor:
998      EntityInfo.kind = CXIdxEntity_CXXDestructor;
999      EntityInfo.lang = CXIdxEntityLang_CXX;
1000      break;
1001    case Decl::CXXConversion:
1002      EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1003      EntityInfo.lang = CXIdxEntityLang_CXX;
1004      break;
1005    case Decl::CXXMethod: {
1006      const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
1007      if (MD->isStatic())
1008        EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1009      else
1010        EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1011      EntityInfo.lang = CXIdxEntityLang_CXX;
1012      break;
1013    }
1014    case Decl::ClassTemplate:
1015      EntityInfo.kind = CXIdxEntity_CXXClass;
1016      EntityInfo.templateKind = CXIdxEntity_Template;
1017      break;
1018    case Decl::FunctionTemplate:
1019      EntityInfo.kind = CXIdxEntity_Function;
1020      EntityInfo.templateKind = CXIdxEntity_Template;
1021      if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(
1022                           cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {
1023        if (isa<CXXConstructorDecl>(MD))
1024          EntityInfo.kind = CXIdxEntity_CXXConstructor;
1025        else if (isa<CXXDestructorDecl>(MD))
1026          EntityInfo.kind = CXIdxEntity_CXXDestructor;
1027        else if (isa<CXXConversionDecl>(MD))
1028          EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1029        else {
1030          if (MD->isStatic())
1031            EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1032          else
1033            EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1034        }
1035      }
1036      break;
1037    case Decl::TypeAliasTemplate:
1038      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1039      EntityInfo.templateKind = CXIdxEntity_Template;
1040      break;
1041    case Decl::TypeAlias:
1042      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1043      EntityInfo.lang = CXIdxEntityLang_CXX;
1044      break;
1045    default:
1046      break;
1047    }
1048  }
1049
1050  if (EntityInfo.kind == CXIdxEntity_Unexposed)
1051    return;
1052
1053  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1054    if (FD->getTemplatedKind() ==
1055          FunctionDecl::TK_FunctionTemplateSpecialization)
1056      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
1057  }
1058
1059  if (EntityInfo.templateKind != CXIdxEntity_NonTemplate)
1060    EntityInfo.lang = CXIdxEntityLang_CXX;
1061
1062  if (IdentifierInfo *II = D->getIdentifier()) {
1063    EntityInfo.name = SA.toCStr(II->getName());
1064
1065  } else if (isa<TagDecl>(D) || isa<FieldDecl>(D) || isa<NamespaceDecl>(D)) {
1066    EntityInfo.name = 0; // anonymous tag/field/namespace.
1067
1068  } else {
1069    SmallString<256> StrBuf;
1070    {
1071      llvm::raw_svector_ostream OS(StrBuf);
1072      D->printName(OS);
1073    }
1074    EntityInfo.name = SA.copyCStr(StrBuf.str());
1075  }
1076
1077  {
1078    SmallString<512> StrBuf;
1079    bool Ignore = getDeclCursorUSR(D, StrBuf);
1080    if (Ignore) {
1081      EntityInfo.USR = 0;
1082    } else {
1083      EntityInfo.USR = SA.copyCStr(StrBuf.str());
1084    }
1085  }
1086}
1087
1088void IndexingContext::getContainerInfo(const DeclContext *DC,
1089                                       ContainerInfo &ContInfo) {
1090  ContInfo.cursor = getCursor(cast<Decl>(DC));
1091  ContInfo.DC = DC;
1092  ContInfo.IndexCtx = this;
1093}
1094
1095CXCursor IndexingContext::getRefCursor(const NamedDecl *D, SourceLocation Loc) {
1096  if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
1097    return MakeCursorTypeRef(TD, Loc, CXTU);
1098  if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
1099    return MakeCursorObjCClassRef(ID, Loc, CXTU);
1100  if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
1101    return MakeCursorObjCProtocolRef(PD, Loc, CXTU);
1102  if (const TemplateDecl *Template = dyn_cast<TemplateDecl>(D))
1103    return MakeCursorTemplateRef(Template, Loc, CXTU);
1104  if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(D))
1105    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1106  if (const NamespaceAliasDecl *Namespace = dyn_cast<NamespaceAliasDecl>(D))
1107    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1108  if (const FieldDecl *Field = dyn_cast<FieldDecl>(D))
1109    return MakeCursorMemberRef(Field, Loc, CXTU);
1110  if (const VarDecl *Var = dyn_cast<VarDecl>(D))
1111    return MakeCursorVariableRef(Var, Loc, CXTU);
1112
1113  return clang_getNullCursor();
1114}
1115
1116bool IndexingContext::shouldIgnoreIfImplicit(const Decl *D) {
1117  if (isa<ObjCInterfaceDecl>(D))
1118    return false;
1119  if (isa<ObjCCategoryDecl>(D))
1120    return false;
1121  if (isa<ObjCIvarDecl>(D))
1122    return false;
1123  if (isa<ObjCMethodDecl>(D))
1124    return false;
1125  if (isa<ImportDecl>(D))
1126    return false;
1127  return true;
1128}
1129
1130bool IndexingContext::isTemplateImplicitInstantiation(const Decl *D) {
1131  if (const ClassTemplateSpecializationDecl *
1132        SD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1133    return SD->getSpecializationKind() == TSK_ImplicitInstantiation;
1134  }
1135  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1136    return FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation;
1137  }
1138  return false;
1139}
1140