IndexingContext.cpp revision 838eb7e8652e451d93494a4e583e4d11809bcb4a 
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  bool isDef = D->isThisDeclarationADefinition();
368  bool isContainer = isDef;
369  bool isSkipped = false;
370  if (D->hasSkippedBody()) {
371    isSkipped = true;
372    isDef = true;
373    isContainer = false;
374  }
375
376  DeclInfo DInfo(!D->isFirstDeclaration(), isDef, isContainer);
377  if (isSkipped)
378    DInfo.flags |= CXIdxDeclFlag_Skipped;
379  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
380}
381
382bool IndexingContext::handleVar(const VarDecl *D) {
383  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
384                 /*isContainer=*/false);
385  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
386}
387
388bool IndexingContext::handleField(const FieldDecl *D) {
389  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
390                 /*isContainer=*/false);
391  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
392}
393
394bool IndexingContext::handleEnumerator(const EnumConstantDecl *D) {
395  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
396                 /*isContainer=*/false);
397  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
398}
399
400bool IndexingContext::handleTagDecl(const TagDecl *D) {
401  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(D))
402    return handleCXXRecordDecl(CXXRD, D);
403
404  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
405                 D->isThisDeclarationADefinition());
406  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
407}
408
409bool IndexingContext::handleTypedefName(const TypedefNameDecl *D) {
410  DeclInfo DInfo(!D->isFirstDeclaration(), /*isDefinition=*/true,
411                 /*isContainer=*/false);
412  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
413}
414
415bool IndexingContext::handleObjCInterface(const ObjCInterfaceDecl *D) {
416  // For @class forward declarations, suppress them the same way as references.
417  if (!D->isThisDeclarationADefinition()) {
418    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
419      return false; // already occurred.
420
421    // FIXME: This seems like the wrong definition for redeclaration.
422    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
423    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true, isRedeclaration,
424                                    /*isImplementation=*/false);
425    return handleObjCContainer(D, D->getLocation(),
426                               MakeCursorObjCClassRef(D, D->getLocation(),
427                                                      CXTU),
428                               ContDInfo);
429  }
430
431  ScratchAlloc SA(*this);
432
433  CXIdxBaseClassInfo BaseClass;
434  EntityInfo BaseEntity;
435  BaseClass.cursor = clang_getNullCursor();
436  if (ObjCInterfaceDecl *SuperD = D->getSuperClass()) {
437    getEntityInfo(SuperD, BaseEntity, SA);
438    SourceLocation SuperLoc = D->getSuperClassLoc();
439    BaseClass.base = &BaseEntity;
440    BaseClass.cursor = MakeCursorObjCSuperClassRef(SuperD, SuperLoc, CXTU);
441    BaseClass.loc = getIndexLoc(SuperLoc);
442
443    if (shouldSuppressRefs())
444      markEntityOccurrenceInFile(SuperD, SuperLoc);
445  }
446
447  ObjCProtocolList EmptyProtoList;
448  ObjCProtocolListInfo ProtInfo(D->isThisDeclarationADefinition()
449                                  ? D->getReferencedProtocols()
450                                  : EmptyProtoList,
451                                *this, SA);
452
453  ObjCInterfaceDeclInfo InterInfo(D);
454  InterInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
455  InterInfo.ObjCInterDeclInfo.containerInfo = &InterInfo.ObjCContDeclInfo;
456  InterInfo.ObjCInterDeclInfo.superInfo = D->getSuperClass() ? &BaseClass : 0;
457  InterInfo.ObjCInterDeclInfo.protocols = &InterInfo.ObjCProtoListInfo;
458
459  return handleObjCContainer(D, D->getLocation(), getCursor(D), InterInfo);
460}
461
462bool IndexingContext::handleObjCImplementation(
463                                              const ObjCImplementationDecl *D) {
464  ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/false,
465                      /*isRedeclaration=*/true,
466                      /*isImplementation=*/true);
467  return handleObjCContainer(D, D->getLocation(), getCursor(D), ContDInfo);
468}
469
470bool IndexingContext::handleObjCProtocol(const ObjCProtocolDecl *D) {
471  if (!D->isThisDeclarationADefinition()) {
472    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
473      return false; // already occurred.
474
475    // FIXME: This seems like the wrong definition for redeclaration.
476    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
477    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true,
478                                    isRedeclaration,
479                                    /*isImplementation=*/false);
480    return handleObjCContainer(D, D->getLocation(),
481                               MakeCursorObjCProtocolRef(D, D->getLocation(),
482                                                         CXTU),
483                               ContDInfo);
484  }
485
486  ScratchAlloc SA(*this);
487  ObjCProtocolList EmptyProtoList;
488  ObjCProtocolListInfo ProtListInfo(D->isThisDeclarationADefinition()
489                                      ? D->getReferencedProtocols()
490                                      : EmptyProtoList,
491                                    *this, SA);
492
493  ObjCProtocolDeclInfo ProtInfo(D);
494  ProtInfo.ObjCProtoRefListInfo = ProtListInfo.getListInfo();
495
496  return handleObjCContainer(D, D->getLocation(), getCursor(D), ProtInfo);
497}
498
499bool IndexingContext::handleObjCCategory(const ObjCCategoryDecl *D) {
500  ScratchAlloc SA(*this);
501
502  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/false);
503  EntityInfo ClassEntity;
504  const ObjCInterfaceDecl *IFaceD = D->getClassInterface();
505  SourceLocation ClassLoc = D->getLocation();
506  SourceLocation CategoryLoc = D->IsClassExtension() ? ClassLoc
507                                                     : D->getCategoryNameLoc();
508  getEntityInfo(IFaceD, ClassEntity, SA);
509
510  if (shouldSuppressRefs())
511    markEntityOccurrenceInFile(IFaceD, ClassLoc);
512
513  ObjCProtocolListInfo ProtInfo(D->getReferencedProtocols(), *this, SA);
514
515  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
516  if (IFaceD) {
517    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
518    CatDInfo.ObjCCatDeclInfo.classCursor =
519        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
520  } else {
521    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
522    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
523  }
524  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
525  CatDInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
526  CatDInfo.ObjCCatDeclInfo.protocols = &CatDInfo.ObjCProtoListInfo;
527
528  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
529}
530
531bool IndexingContext::handleObjCCategoryImpl(const ObjCCategoryImplDecl *D) {
532  ScratchAlloc SA(*this);
533
534  const ObjCCategoryDecl *CatD = D->getCategoryDecl();
535  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/true);
536  EntityInfo ClassEntity;
537  const ObjCInterfaceDecl *IFaceD = CatD->getClassInterface();
538  SourceLocation ClassLoc = D->getLocation();
539  SourceLocation CategoryLoc = D->getCategoryNameLoc();
540  getEntityInfo(IFaceD, ClassEntity, SA);
541
542  if (shouldSuppressRefs())
543    markEntityOccurrenceInFile(IFaceD, ClassLoc);
544
545  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
546  if (IFaceD) {
547    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
548    CatDInfo.ObjCCatDeclInfo.classCursor =
549        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
550  } else {
551    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
552    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
553  }
554  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
555  CatDInfo.ObjCCatDeclInfo.protocols = 0;
556
557  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
558}
559
560bool IndexingContext::handleObjCMethod(const ObjCMethodDecl *D) {
561  bool isDef = D->isThisDeclarationADefinition();
562  bool isContainer = isDef;
563  bool isSkipped = false;
564  if (D->hasSkippedBody()) {
565    isSkipped = true;
566    isDef = true;
567    isContainer = false;
568  }
569
570  DeclInfo DInfo(!D->isCanonicalDecl(), isDef, isContainer);
571  if (isSkipped)
572    DInfo.flags |= CXIdxDeclFlag_Skipped;
573  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
574}
575
576bool IndexingContext::handleSynthesizedObjCProperty(
577                                                const ObjCPropertyImplDecl *D) {
578  ObjCPropertyDecl *PD = D->getPropertyDecl();
579  return handleReference(PD, D->getLocation(), getCursor(D), 0, D->getDeclContext());
580}
581
582bool IndexingContext::handleSynthesizedObjCMethod(const ObjCMethodDecl *D,
583                                                  SourceLocation Loc,
584                                                 const DeclContext *LexicalDC) {
585  DeclInfo DInfo(/*isRedeclaration=*/true, /*isDefinition=*/true,
586                 /*isContainer=*/false);
587  return handleDecl(D, Loc, getCursor(D), DInfo, LexicalDC);
588}
589
590bool IndexingContext::handleObjCProperty(const ObjCPropertyDecl *D) {
591  ScratchAlloc SA(*this);
592
593  ObjCPropertyDeclInfo DInfo;
594  EntityInfo GetterEntity;
595  EntityInfo SetterEntity;
596
597  DInfo.ObjCPropDeclInfo.declInfo = &DInfo;
598
599  if (ObjCMethodDecl *Getter = D->getGetterMethodDecl()) {
600    getEntityInfo(Getter, GetterEntity, SA);
601    DInfo.ObjCPropDeclInfo.getter = &GetterEntity;
602  } else {
603    DInfo.ObjCPropDeclInfo.getter = 0;
604  }
605  if (ObjCMethodDecl *Setter = D->getSetterMethodDecl()) {
606    getEntityInfo(Setter, SetterEntity, SA);
607    DInfo.ObjCPropDeclInfo.setter = &SetterEntity;
608  } else {
609    DInfo.ObjCPropDeclInfo.setter = 0;
610  }
611
612  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
613}
614
615bool IndexingContext::handleNamespace(const NamespaceDecl *D) {
616  DeclInfo DInfo(/*isRedeclaration=*/!D->isOriginalNamespace(),
617                 /*isDefinition=*/true,
618                 /*isContainer=*/true);
619  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
620}
621
622bool IndexingContext::handleClassTemplate(const ClassTemplateDecl *D) {
623  return handleCXXRecordDecl(D->getTemplatedDecl(), D);
624}
625
626bool IndexingContext::handleFunctionTemplate(const FunctionTemplateDecl *D) {
627  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
628                 /*isDefinition=*/D->isThisDeclarationADefinition(),
629                 /*isContainer=*/D->isThisDeclarationADefinition());
630  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
631}
632
633bool IndexingContext::handleTypeAliasTemplate(const TypeAliasTemplateDecl *D) {
634  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
635                 /*isDefinition=*/true, /*isContainer=*/false);
636  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
637}
638
639bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
640                                      const NamedDecl *Parent,
641                                      const DeclContext *DC,
642                                      const Expr *E,
643                                      CXIdxEntityRefKind Kind) {
644  if (!D)
645    return false;
646
647  CXCursor Cursor = E ? MakeCXCursor(const_cast<Expr*>(E),
648                                     const_cast<Decl*>(cast<Decl>(DC)), CXTU)
649                      : getRefCursor(D, Loc);
650  return handleReference(D, Loc, Cursor, Parent, DC, E, Kind);
651}
652
653bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
654                                      CXCursor Cursor,
655                                      const NamedDecl *Parent,
656                                      const DeclContext *DC,
657                                      const Expr *E,
658                                      CXIdxEntityRefKind Kind) {
659  if (!CB.indexEntityReference)
660    return false;
661
662  if (!D)
663    return false;
664  if (Loc.isInvalid())
665    return false;
666  if (!shouldIndexFunctionLocalSymbols() && isFunctionLocalDecl(D))
667    return false;
668  if (isNotFromSourceFile(D->getLocation()))
669    return false;
670  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
671    return false;
672
673  if (shouldSuppressRefs()) {
674    if (markEntityOccurrenceInFile(D, Loc))
675      return false; // already occurred.
676  }
677
678  ScratchAlloc SA(*this);
679  EntityInfo RefEntity, ParentEntity;
680  getEntityInfo(D, RefEntity, SA);
681  if (!RefEntity.USR)
682    return false;
683
684  getEntityInfo(Parent, ParentEntity, SA);
685
686  ContainerInfo Container;
687  getContainerInfo(DC, Container);
688
689  CXIdxEntityRefInfo Info = { Kind,
690                              Cursor,
691                              getIndexLoc(Loc),
692                              &RefEntity,
693                              Parent ? &ParentEntity : 0,
694                              &Container };
695  CB.indexEntityReference(ClientData, &Info);
696  return true;
697}
698
699bool IndexingContext::isNotFromSourceFile(SourceLocation Loc) const {
700  if (Loc.isInvalid())
701    return true;
702  SourceManager &SM = Ctx->getSourceManager();
703  SourceLocation FileLoc = SM.getFileLoc(Loc);
704  FileID FID = SM.getFileID(FileLoc);
705  return SM.getFileEntryForID(FID) == 0;
706}
707
708void IndexingContext::addContainerInMap(const DeclContext *DC,
709                                        CXIdxClientContainer container) {
710  if (!DC)
711    return;
712
713  ContainerMapTy::iterator I = ContainerMap.find(DC);
714  if (I == ContainerMap.end()) {
715    if (container)
716      ContainerMap[DC] = container;
717    return;
718  }
719  // Allow changing the container of a previously seen DeclContext so we
720  // can handle invalid user code, like a function re-definition.
721  if (container)
722    I->second = container;
723  else
724    ContainerMap.erase(I);
725}
726
727CXIdxClientEntity IndexingContext::getClientEntity(const Decl *D) const {
728  if (!D)
729    return 0;
730  EntityMapTy::const_iterator I = EntityMap.find(D);
731  if (I == EntityMap.end())
732    return 0;
733  return I->second;
734}
735
736void IndexingContext::setClientEntity(const Decl *D, CXIdxClientEntity client) {
737  if (!D)
738    return;
739  EntityMap[D] = client;
740}
741
742bool IndexingContext::handleCXXRecordDecl(const CXXRecordDecl *RD,
743                                          const NamedDecl *OrigD) {
744  if (RD->isThisDeclarationADefinition()) {
745    ScratchAlloc SA(*this);
746    CXXClassDeclInfo CXXDInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
747                           /*isDefinition=*/RD->isThisDeclarationADefinition());
748    CXXBasesListInfo BaseList(RD, *this, SA);
749    CXXDInfo.CXXClassInfo.declInfo = &CXXDInfo;
750    CXXDInfo.CXXClassInfo.bases = BaseList.getBases();
751    CXXDInfo.CXXClassInfo.numBases = BaseList.getNumBases();
752
753    if (shouldSuppressRefs()) {
754      // Go through bases and mark them as referenced.
755      for (unsigned i = 0, e = BaseList.getNumBases(); i != e; ++i) {
756        const CXIdxBaseClassInfo *baseInfo = BaseList.getBases()[i];
757        if (baseInfo->base) {
758          const NamedDecl *BaseD = BaseList.BaseEntities[i].Dcl;
759          SourceLocation
760            Loc = SourceLocation::getFromRawEncoding(baseInfo->loc.int_data);
761          markEntityOccurrenceInFile(BaseD, Loc);
762        }
763      }
764    }
765
766    return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), CXXDInfo);
767  }
768
769  DeclInfo DInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
770                 /*isDefinition=*/RD->isThisDeclarationADefinition(),
771                 /*isContainer=*/RD->isThisDeclarationADefinition());
772  return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), DInfo);
773}
774
775bool IndexingContext::markEntityOccurrenceInFile(const NamedDecl *D,
776                                                 SourceLocation Loc) {
777  if (!D || Loc.isInvalid())
778    return true;
779
780  SourceManager &SM = Ctx->getSourceManager();
781  D = getEntityDecl(D);
782
783  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SM.getFileLoc(Loc));
784  FileID FID = LocInfo.first;
785  if (FID.isInvalid())
786    return true;
787
788  const FileEntry *FE = SM.getFileEntryForID(FID);
789  if (!FE)
790    return true;
791  RefFileOccurence RefOccur(FE, D);
792  std::pair<llvm::DenseSet<RefFileOccurence>::iterator, bool>
793  res = RefFileOccurences.insert(RefOccur);
794  if (!res.second)
795    return true; // already in map.
796
797  return false;
798}
799
800const NamedDecl *IndexingContext::getEntityDecl(const NamedDecl *D) const {
801  assert(D);
802  D = cast<NamedDecl>(D->getCanonicalDecl());
803
804  if (const ObjCImplementationDecl *
805               ImplD = dyn_cast<ObjCImplementationDecl>(D)) {
806    return getEntityDecl(ImplD->getClassInterface());
807
808  } else if (const ObjCCategoryImplDecl *
809               CatImplD = dyn_cast<ObjCCategoryImplDecl>(D)) {
810    return getEntityDecl(CatImplD->getCategoryDecl());
811  } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
812    if (FunctionTemplateDecl *TemplD = FD->getDescribedFunctionTemplate())
813      return getEntityDecl(TemplD);
814  } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
815    if (ClassTemplateDecl *TemplD = RD->getDescribedClassTemplate())
816      return getEntityDecl(TemplD);
817  }
818
819  return D;
820}
821
822const DeclContext *
823IndexingContext::getEntityContainer(const Decl *D) const {
824  const DeclContext *DC = dyn_cast<DeclContext>(D);
825  if (DC)
826    return DC;
827
828  if (const ClassTemplateDecl *ClassTempl = dyn_cast<ClassTemplateDecl>(D)) {
829    DC = ClassTempl->getTemplatedDecl();
830  } if (const FunctionTemplateDecl *
831          FuncTempl = dyn_cast<FunctionTemplateDecl>(D)) {
832    DC = FuncTempl->getTemplatedDecl();
833  }
834
835  return DC;
836}
837
838CXIdxClientContainer
839IndexingContext::getClientContainerForDC(const DeclContext *DC) const {
840  if (!DC)
841    return 0;
842
843  ContainerMapTy::const_iterator I = ContainerMap.find(DC);
844  if (I == ContainerMap.end())
845    return 0;
846
847  return I->second;
848}
849
850CXIdxClientFile IndexingContext::getIndexFile(const FileEntry *File) {
851  if (!File)
852    return 0;
853
854  FileMapTy::iterator FI = FileMap.find(File);
855  if (FI != FileMap.end())
856    return FI->second;
857
858  return 0;
859}
860
861CXIdxLoc IndexingContext::getIndexLoc(SourceLocation Loc) const {
862  CXIdxLoc idxLoc =  { {0, 0}, 0 };
863  if (Loc.isInvalid())
864    return idxLoc;
865
866  idxLoc.ptr_data[0] = (void*)this;
867  idxLoc.int_data = Loc.getRawEncoding();
868  return idxLoc;
869}
870
871void IndexingContext::translateLoc(SourceLocation Loc,
872                                   CXIdxClientFile *indexFile, CXFile *file,
873                                   unsigned *line, unsigned *column,
874                                   unsigned *offset) {
875  if (Loc.isInvalid())
876    return;
877
878  SourceManager &SM = Ctx->getSourceManager();
879  Loc = SM.getFileLoc(Loc);
880
881  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
882  FileID FID = LocInfo.first;
883  unsigned FileOffset = LocInfo.second;
884
885  if (FID.isInvalid())
886    return;
887
888  const FileEntry *FE = SM.getFileEntryForID(FID);
889  if (indexFile)
890    *indexFile = getIndexFile(FE);
891  if (file)
892    *file = (void *)FE;
893  if (line)
894    *line = SM.getLineNumber(FID, FileOffset);
895  if (column)
896    *column = SM.getColumnNumber(FID, FileOffset);
897  if (offset)
898    *offset = FileOffset;
899}
900
901void IndexingContext::getEntityInfo(const NamedDecl *D,
902                                    EntityInfo &EntityInfo,
903                                    ScratchAlloc &SA) {
904  if (!D)
905    return;
906
907  D = getEntityDecl(D);
908  EntityInfo.cursor = getCursor(D);
909  EntityInfo.Dcl = D;
910  EntityInfo.IndexCtx = this;
911  EntityInfo.kind = CXIdxEntity_Unexposed;
912  EntityInfo.templateKind = CXIdxEntity_NonTemplate;
913  EntityInfo.lang = CXIdxEntityLang_C;
914
915  if (D->hasAttrs()) {
916    EntityInfo.AttrList = AttrListInfo::create(D, *this);
917    EntityInfo.attributes = EntityInfo.AttrList->getAttrs();
918    EntityInfo.numAttributes = EntityInfo.AttrList->getNumAttrs();
919  }
920
921  if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
922    switch (TD->getTagKind()) {
923    case TTK_Struct:
924      EntityInfo.kind = CXIdxEntity_Struct; break;
925    case TTK_Union:
926      EntityInfo.kind = CXIdxEntity_Union; break;
927    case TTK_Class:
928      EntityInfo.kind = CXIdxEntity_CXXClass;
929      EntityInfo.lang = CXIdxEntityLang_CXX;
930      break;
931    case TTK_Interface:
932      EntityInfo.kind = CXIdxEntity_CXXInterface;
933      EntityInfo.lang = CXIdxEntityLang_CXX;
934      break;
935    case TTK_Enum:
936      EntityInfo.kind = CXIdxEntity_Enum; break;
937    }
938
939    if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D))
940      if (!CXXRec->isCLike())
941        EntityInfo.lang = CXIdxEntityLang_CXX;
942
943    if (isa<ClassTemplatePartialSpecializationDecl>(D)) {
944      EntityInfo.templateKind = CXIdxEntity_TemplatePartialSpecialization;
945    } else if (isa<ClassTemplateSpecializationDecl>(D)) {
946      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
947    }
948
949  } else {
950    switch (D->getKind()) {
951    case Decl::Typedef:
952      EntityInfo.kind = CXIdxEntity_Typedef; break;
953    case Decl::Function:
954      EntityInfo.kind = CXIdxEntity_Function;
955      break;
956    case Decl::ParmVar:
957      EntityInfo.kind = CXIdxEntity_Variable;
958      break;
959    case Decl::Var:
960      EntityInfo.kind = CXIdxEntity_Variable;
961      if (isa<CXXRecordDecl>(D->getDeclContext())) {
962        EntityInfo.kind = CXIdxEntity_CXXStaticVariable;
963        EntityInfo.lang = CXIdxEntityLang_CXX;
964      }
965      break;
966    case Decl::Field:
967      EntityInfo.kind = CXIdxEntity_Field;
968      if (const CXXRecordDecl *
969            CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {
970        // FIXME: isPOD check is not sufficient, a POD can contain methods,
971        // we want a isCStructLike check.
972        if (!CXXRec->isPOD())
973          EntityInfo.lang = CXIdxEntityLang_CXX;
974      }
975      break;
976    case Decl::EnumConstant:
977      EntityInfo.kind = CXIdxEntity_EnumConstant; break;
978    case Decl::ObjCInterface:
979      EntityInfo.kind = CXIdxEntity_ObjCClass;
980      EntityInfo.lang = CXIdxEntityLang_ObjC;
981      break;
982    case Decl::ObjCProtocol:
983      EntityInfo.kind = CXIdxEntity_ObjCProtocol;
984      EntityInfo.lang = CXIdxEntityLang_ObjC;
985      break;
986    case Decl::ObjCCategory:
987      EntityInfo.kind = CXIdxEntity_ObjCCategory;
988      EntityInfo.lang = CXIdxEntityLang_ObjC;
989      break;
990    case Decl::ObjCMethod:
991      if (cast<ObjCMethodDecl>(D)->isInstanceMethod())
992        EntityInfo.kind = CXIdxEntity_ObjCInstanceMethod;
993      else
994        EntityInfo.kind = CXIdxEntity_ObjCClassMethod;
995      EntityInfo.lang = CXIdxEntityLang_ObjC;
996      break;
997    case Decl::ObjCProperty:
998      EntityInfo.kind = CXIdxEntity_ObjCProperty;
999      EntityInfo.lang = CXIdxEntityLang_ObjC;
1000      break;
1001    case Decl::ObjCIvar:
1002      EntityInfo.kind = CXIdxEntity_ObjCIvar;
1003      EntityInfo.lang = CXIdxEntityLang_ObjC;
1004      break;
1005    case Decl::Namespace:
1006      EntityInfo.kind = CXIdxEntity_CXXNamespace;
1007      EntityInfo.lang = CXIdxEntityLang_CXX;
1008      break;
1009    case Decl::NamespaceAlias:
1010      EntityInfo.kind = CXIdxEntity_CXXNamespaceAlias;
1011      EntityInfo.lang = CXIdxEntityLang_CXX;
1012      break;
1013    case Decl::CXXConstructor:
1014      EntityInfo.kind = CXIdxEntity_CXXConstructor;
1015      EntityInfo.lang = CXIdxEntityLang_CXX;
1016      break;
1017    case Decl::CXXDestructor:
1018      EntityInfo.kind = CXIdxEntity_CXXDestructor;
1019      EntityInfo.lang = CXIdxEntityLang_CXX;
1020      break;
1021    case Decl::CXXConversion:
1022      EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1023      EntityInfo.lang = CXIdxEntityLang_CXX;
1024      break;
1025    case Decl::CXXMethod: {
1026      const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
1027      if (MD->isStatic())
1028        EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1029      else
1030        EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1031      EntityInfo.lang = CXIdxEntityLang_CXX;
1032      break;
1033    }
1034    case Decl::ClassTemplate:
1035      EntityInfo.kind = CXIdxEntity_CXXClass;
1036      EntityInfo.templateKind = CXIdxEntity_Template;
1037      break;
1038    case Decl::FunctionTemplate:
1039      EntityInfo.kind = CXIdxEntity_Function;
1040      EntityInfo.templateKind = CXIdxEntity_Template;
1041      if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(
1042                           cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {
1043        if (isa<CXXConstructorDecl>(MD))
1044          EntityInfo.kind = CXIdxEntity_CXXConstructor;
1045        else if (isa<CXXDestructorDecl>(MD))
1046          EntityInfo.kind = CXIdxEntity_CXXDestructor;
1047        else if (isa<CXXConversionDecl>(MD))
1048          EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1049        else {
1050          if (MD->isStatic())
1051            EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1052          else
1053            EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1054        }
1055      }
1056      break;
1057    case Decl::TypeAliasTemplate:
1058      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1059      EntityInfo.templateKind = CXIdxEntity_Template;
1060      break;
1061    case Decl::TypeAlias:
1062      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1063      EntityInfo.lang = CXIdxEntityLang_CXX;
1064      break;
1065    default:
1066      break;
1067    }
1068  }
1069
1070  if (EntityInfo.kind == CXIdxEntity_Unexposed)
1071    return;
1072
1073  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1074    if (FD->getTemplatedKind() ==
1075          FunctionDecl::TK_FunctionTemplateSpecialization)
1076      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
1077  }
1078
1079  if (EntityInfo.templateKind != CXIdxEntity_NonTemplate)
1080    EntityInfo.lang = CXIdxEntityLang_CXX;
1081
1082  if (IdentifierInfo *II = D->getIdentifier()) {
1083    EntityInfo.name = SA.toCStr(II->getName());
1084
1085  } else if (isa<TagDecl>(D) || isa<FieldDecl>(D) || isa<NamespaceDecl>(D)) {
1086    EntityInfo.name = 0; // anonymous tag/field/namespace.
1087
1088  } else {
1089    SmallString<256> StrBuf;
1090    {
1091      llvm::raw_svector_ostream OS(StrBuf);
1092      D->printName(OS);
1093    }
1094    EntityInfo.name = SA.copyCStr(StrBuf.str());
1095  }
1096
1097  {
1098    SmallString<512> StrBuf;
1099    bool Ignore = getDeclCursorUSR(D, StrBuf);
1100    if (Ignore) {
1101      EntityInfo.USR = 0;
1102    } else {
1103      EntityInfo.USR = SA.copyCStr(StrBuf.str());
1104    }
1105  }
1106}
1107
1108void IndexingContext::getContainerInfo(const DeclContext *DC,
1109                                       ContainerInfo &ContInfo) {
1110  ContInfo.cursor = getCursor(cast<Decl>(DC));
1111  ContInfo.DC = DC;
1112  ContInfo.IndexCtx = this;
1113}
1114
1115CXCursor IndexingContext::getRefCursor(const NamedDecl *D, SourceLocation Loc) {
1116  if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
1117    return MakeCursorTypeRef(TD, Loc, CXTU);
1118  if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
1119    return MakeCursorObjCClassRef(ID, Loc, CXTU);
1120  if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
1121    return MakeCursorObjCProtocolRef(PD, Loc, CXTU);
1122  if (const TemplateDecl *Template = dyn_cast<TemplateDecl>(D))
1123    return MakeCursorTemplateRef(Template, Loc, CXTU);
1124  if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(D))
1125    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1126  if (const NamespaceAliasDecl *Namespace = dyn_cast<NamespaceAliasDecl>(D))
1127    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1128  if (const FieldDecl *Field = dyn_cast<FieldDecl>(D))
1129    return MakeCursorMemberRef(Field, Loc, CXTU);
1130  if (const VarDecl *Var = dyn_cast<VarDecl>(D))
1131    return MakeCursorVariableRef(Var, Loc, CXTU);
1132
1133  return clang_getNullCursor();
1134}
1135
1136bool IndexingContext::shouldIgnoreIfImplicit(const Decl *D) {
1137  if (isa<ObjCInterfaceDecl>(D))
1138    return false;
1139  if (isa<ObjCCategoryDecl>(D))
1140    return false;
1141  if (isa<ObjCIvarDecl>(D))
1142    return false;
1143  if (isa<ObjCMethodDecl>(D))
1144    return false;
1145  if (isa<ImportDecl>(D))
1146    return false;
1147  return true;
1148}
1149
1150bool IndexingContext::isTemplateImplicitInstantiation(const Decl *D) {
1151  if (const ClassTemplateSpecializationDecl *
1152        SD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1153    return SD->getSpecializationKind() == TSK_ImplicitInstantiation;
1154  }
1155  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1156    return FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation;
1157  }
1158  return false;
1159}
1160