IndexingContext.cpp revision 3da76bfbd24b2747ceb72d1918bbbe3123dac841 
1//===- CIndexHigh.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 "CXTranslationUnit.h"
12#include "CIndexDiagnostic.h"
13
14#include "clang/Frontend/ASTUnit.h"
15#include "clang/AST/DeclCXX.h"
16#include "clang/AST/DeclTemplate.h"
17
18using namespace clang;
19using namespace cxindex;
20using namespace cxcursor;
21
22IndexingContext::ObjCProtocolListInfo::ObjCProtocolListInfo(
23                                    const ObjCProtocolList &ProtList,
24                                    IndexingContext &IdxCtx,
25                                    ScratchAlloc &SA) {
26  ObjCInterfaceDecl::protocol_loc_iterator LI = ProtList.loc_begin();
27  for (ObjCInterfaceDecl::protocol_iterator
28         I = ProtList.begin(), E = ProtList.end(); I != E; ++I, ++LI) {
29    SourceLocation Loc = *LI;
30    ObjCProtocolDecl *PD = *I;
31    ProtEntities.push_back(EntityInfo());
32    IdxCtx.getEntityInfo(PD, ProtEntities.back(), SA);
33    CXIdxObjCProtocolRefInfo ProtInfo = { 0,
34                                MakeCursorObjCProtocolRef(PD, Loc, IdxCtx.CXTU),
35                                IdxCtx.getIndexLoc(Loc) };
36    ProtInfos.push_back(ProtInfo);
37
38    if (IdxCtx.shouldSuppressRefs())
39      IdxCtx.markEntityOccurrenceInFile(PD, Loc);
40  }
41
42  for (unsigned i = 0, e = ProtInfos.size(); i != e; ++i)
43    ProtInfos[i].protocol = &ProtEntities[i];
44
45  for (unsigned i = 0, e = ProtInfos.size(); i != e; ++i)
46    Prots.push_back(&ProtInfos[i]);
47}
48
49
50IBOutletCollectionInfo::IBOutletCollectionInfo(
51                                          const IBOutletCollectionInfo &other)
52  : AttrInfo(CXIdxAttr_IBOutletCollection, other.cursor, other.loc, other.A) {
53
54  IBCollInfo.attrInfo = this;
55  IBCollInfo.classCursor = other.IBCollInfo.classCursor;
56  IBCollInfo.classLoc = other.IBCollInfo.classLoc;
57  if (other.IBCollInfo.objcClass) {
58    ClassInfo = other.ClassInfo;
59    IBCollInfo.objcClass = &ClassInfo;
60  } else
61    IBCollInfo.objcClass = 0;
62}
63
64AttrListInfo::AttrListInfo(const Decl *D, IndexingContext &IdxCtx)
65  : SA(IdxCtx), ref_cnt(0) {
66
67  if (!D->hasAttrs())
68    return;
69
70  for (AttrVec::const_iterator AttrI = D->attr_begin(), AttrE = D->attr_end();
71         AttrI != AttrE; ++AttrI) {
72    const Attr *A = *AttrI;
73    CXCursor C = MakeCXCursor(A, const_cast<Decl *>(D), IdxCtx.CXTU);
74    CXIdxLoc Loc =  IdxCtx.getIndexLoc(A->getLocation());
75    switch (C.kind) {
76    default:
77      Attrs.push_back(AttrInfo(CXIdxAttr_Unexposed, C, Loc, A));
78      break;
79    case CXCursor_IBActionAttr:
80      Attrs.push_back(AttrInfo(CXIdxAttr_IBAction, C, Loc, A));
81      break;
82    case CXCursor_IBOutletAttr:
83      Attrs.push_back(AttrInfo(CXIdxAttr_IBOutlet, C, Loc, A));
84      break;
85    case CXCursor_IBOutletCollectionAttr:
86      IBCollAttrs.push_back(IBOutletCollectionInfo(C, Loc, A));
87      break;
88    }
89  }
90
91  for (unsigned i = 0, e = IBCollAttrs.size(); i != e; ++i) {
92    IBOutletCollectionInfo &IBInfo = IBCollAttrs[i];
93    CXAttrs.push_back(&IBInfo);
94
95    const IBOutletCollectionAttr *
96      IBAttr = cast<IBOutletCollectionAttr>(IBInfo.A);
97    IBInfo.IBCollInfo.attrInfo = &IBInfo;
98    IBInfo.IBCollInfo.classLoc = IdxCtx.getIndexLoc(IBAttr->getInterfaceLoc());
99    IBInfo.IBCollInfo.objcClass = 0;
100    IBInfo.IBCollInfo.classCursor = clang_getNullCursor();
101    QualType Ty = IBAttr->getInterface();
102    if (const ObjCInterfaceType *InterTy = Ty->getAs<ObjCInterfaceType>()) {
103      if (const ObjCInterfaceDecl *InterD = InterTy->getInterface()) {
104        IdxCtx.getEntityInfo(InterD, IBInfo.ClassInfo, SA);
105        IBInfo.IBCollInfo.objcClass = &IBInfo.ClassInfo;
106        IBInfo.IBCollInfo.classCursor = MakeCursorObjCClassRef(InterD,
107                                        IBAttr->getInterfaceLoc(), IdxCtx.CXTU);
108      }
109    }
110  }
111
112  for (unsigned i = 0, e = Attrs.size(); i != e; ++i)
113    CXAttrs.push_back(&Attrs[i]);
114}
115
116IntrusiveRefCntPtr<AttrListInfo>
117AttrListInfo::create(const Decl *D, IndexingContext &IdxCtx) {
118  ScratchAlloc SA(IdxCtx);
119  AttrListInfo *attrs = SA.allocate<AttrListInfo>();
120  return new (attrs) AttrListInfo(D, IdxCtx);
121}
122
123IndexingContext::CXXBasesListInfo::CXXBasesListInfo(const CXXRecordDecl *D,
124                                   IndexingContext &IdxCtx,
125                                   ScratchAlloc &SA) {
126  for (CXXRecordDecl::base_class_const_iterator
127         I = D->bases_begin(), E = D->bases_end(); I != E; ++I) {
128    const CXXBaseSpecifier &Base = *I;
129    BaseEntities.push_back(EntityInfo());
130    const NamedDecl *BaseD = 0;
131    QualType T = Base.getType();
132    SourceLocation Loc = getBaseLoc(Base);
133
134    if (const TypedefType *TDT = T->getAs<TypedefType>()) {
135      BaseD = TDT->getDecl();
136    } else if (const TemplateSpecializationType *
137          TST = T->getAs<TemplateSpecializationType>()) {
138      BaseD = TST->getTemplateName().getAsTemplateDecl();
139    } else if (const RecordType *RT = T->getAs<RecordType>()) {
140      BaseD = RT->getDecl();
141    }
142
143    if (BaseD)
144      IdxCtx.getEntityInfo(BaseD, BaseEntities.back(), SA);
145    CXIdxBaseClassInfo BaseInfo = { 0,
146                         MakeCursorCXXBaseSpecifier(&Base, IdxCtx.CXTU),
147                         IdxCtx.getIndexLoc(Loc) };
148    BaseInfos.push_back(BaseInfo);
149  }
150
151  for (unsigned i = 0, e = BaseInfos.size(); i != e; ++i) {
152    if (BaseEntities[i].name && BaseEntities[i].USR)
153      BaseInfos[i].base = &BaseEntities[i];
154  }
155
156  for (unsigned i = 0, e = BaseInfos.size(); i != e; ++i)
157    CXBases.push_back(&BaseInfos[i]);
158}
159
160SourceLocation IndexingContext::CXXBasesListInfo::getBaseLoc(
161                                           const CXXBaseSpecifier &Base) const {
162  SourceLocation Loc = Base.getSourceRange().getBegin();
163  TypeLoc TL;
164  if (Base.getTypeSourceInfo())
165    TL = Base.getTypeSourceInfo()->getTypeLoc();
166  if (TL.isNull())
167    return Loc;
168
169  if (const QualifiedTypeLoc *QL = dyn_cast<QualifiedTypeLoc>(&TL))
170    TL = QL->getUnqualifiedLoc();
171
172  if (const ElaboratedTypeLoc *EL = dyn_cast<ElaboratedTypeLoc>(&TL))
173    return EL->getNamedTypeLoc().getBeginLoc();
174  if (const DependentNameTypeLoc *DL = dyn_cast<DependentNameTypeLoc>(&TL))
175    return DL->getNameLoc();
176  if (const DependentTemplateSpecializationTypeLoc *
177        DTL = dyn_cast<DependentTemplateSpecializationTypeLoc>(&TL))
178    return DTL->getTemplateNameLoc();
179
180  return Loc;
181}
182
183const char *ScratchAlloc::toCStr(StringRef Str) {
184  if (Str.empty())
185    return "";
186  if (Str.data()[Str.size()] == '\0')
187    return Str.data();
188  return copyCStr(Str);
189}
190
191const char *ScratchAlloc::copyCStr(StringRef Str) {
192  char *buf = IdxCtx.StrScratch.Allocate<char>(Str.size() + 1);
193  std::uninitialized_copy(Str.begin(), Str.end(), buf);
194  buf[Str.size()] = '\0';
195  return buf;
196}
197
198void IndexingContext::setASTContext(ASTContext &ctx) {
199  Ctx = &ctx;
200  static_cast<ASTUnit*>(CXTU->TUData)->setASTContext(&ctx);
201}
202
203void IndexingContext::setPreprocessor(Preprocessor &PP) {
204  static_cast<ASTUnit*>(CXTU->TUData)->setPreprocessor(&PP);
205}
206
207bool IndexingContext::isFunctionLocalDecl(const Decl *D) {
208  assert(D);
209
210  if (!D->getParentFunctionOrMethod())
211    return false;
212
213  if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
214    switch (ND->getLinkage()) {
215    case NoLinkage:
216    case InternalLinkage:
217      return true;
218    case UniqueExternalLinkage:
219    case ExternalLinkage:
220      return false;
221    }
222  }
223
224  return true;
225}
226
227bool IndexingContext::shouldAbort() {
228  if (!CB.abortQuery)
229    return false;
230  return CB.abortQuery(ClientData, 0);
231}
232
233void IndexingContext::enteredMainFile(const FileEntry *File) {
234  if (File && CB.enteredMainFile) {
235    CXIdxClientFile idxFile = CB.enteredMainFile(ClientData, (CXFile)File, 0);
236    FileMap[File] = idxFile;
237  }
238}
239
240void IndexingContext::ppIncludedFile(SourceLocation hashLoc,
241                                     StringRef filename,
242                                     const FileEntry *File,
243                                     bool isImport, bool isAngled) {
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 };
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                                    getIndexLoc(ImportD->getLocation()),
268                                    /*isModule=*/true,
269                                    ImportD->isImplicit(),
270                                    ModuleName.c_str(),
271                                  };
272  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
273  (void)astFile;
274}
275
276void IndexingContext::importedPCH(const FileEntry *File) {
277  if (!CB.importedASTFile)
278    return;
279
280  CXIdxImportedASTFileInfo Info = {
281                                    (CXFile)File,
282                                    getIndexLoc(SourceLocation()),
283                                    /*isModule=*/false,
284                                    /*isImplicit=*/false,
285                                    /*moduleName=*/NULL
286                                  };
287  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
288  (void)astFile;
289}
290
291void IndexingContext::startedTranslationUnit() {
292  CXIdxClientContainer idxCont = 0;
293  if (CB.startedTranslationUnit)
294    idxCont = CB.startedTranslationUnit(ClientData, 0);
295  addContainerInMap(Ctx->getTranslationUnitDecl(), idxCont);
296}
297
298void IndexingContext::handleDiagnosticSet(CXDiagnostic CXDiagSet) {
299  if (!CB.diagnostic)
300    return;
301
302  CB.diagnostic(ClientData, CXDiagSet, 0);
303}
304
305bool IndexingContext::handleDecl(const NamedDecl *D,
306                                 SourceLocation Loc, CXCursor Cursor,
307                                 DeclInfo &DInfo,
308                                 const DeclContext *LexicalDC) {
309  if (!CB.indexDeclaration || !D)
310    return false;
311  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
312    return false;
313
314  ScratchAlloc SA(*this);
315  getEntityInfo(D, DInfo.EntInfo, SA);
316  if ((!shouldIndexFunctionLocalSymbols() && !DInfo.EntInfo.USR)
317      || Loc.isInvalid())
318    return false;
319
320  if (!LexicalDC)
321    LexicalDC = D->getLexicalDeclContext();
322
323  if (shouldSuppressRefs())
324    markEntityOccurrenceInFile(D, Loc);
325
326  DInfo.entityInfo = &DInfo.EntInfo;
327  DInfo.cursor = Cursor;
328  DInfo.loc = getIndexLoc(Loc);
329  DInfo.isImplicit = D->isImplicit();
330
331  DInfo.attributes = DInfo.EntInfo.attributes;
332  DInfo.numAttributes = DInfo.EntInfo.numAttributes;
333
334  getContainerInfo(D->getDeclContext(), DInfo.SemanticContainer);
335  DInfo.semanticContainer = &DInfo.SemanticContainer;
336
337  if (LexicalDC == D->getDeclContext()) {
338    DInfo.lexicalContainer = &DInfo.SemanticContainer;
339  } else if (isTemplateImplicitInstantiation(D)) {
340    // Implicit instantiations have the lexical context of where they were
341    // instantiated first. We choose instead the semantic context because:
342    // 1) at the time that we see the instantiation we have not seen the
343    //   function where it occurred yet.
344    // 2) the lexical context of the first instantiation is not useful
345    //   information anyway.
346    DInfo.lexicalContainer = &DInfo.SemanticContainer;
347  } else {
348    getContainerInfo(LexicalDC, DInfo.LexicalContainer);
349    DInfo.lexicalContainer = &DInfo.LexicalContainer;
350  }
351
352  if (DInfo.isContainer) {
353    getContainerInfo(getEntityContainer(D), DInfo.DeclAsContainer);
354    DInfo.declAsContainer = &DInfo.DeclAsContainer;
355  }
356
357  CB.indexDeclaration(ClientData, &DInfo);
358  return true;
359}
360
361bool IndexingContext::handleObjCContainer(const ObjCContainerDecl *D,
362                                          SourceLocation Loc, CXCursor Cursor,
363                                          ObjCContainerDeclInfo &ContDInfo) {
364  ContDInfo.ObjCContDeclInfo.declInfo = &ContDInfo;
365  return handleDecl(D, Loc, Cursor, ContDInfo);
366}
367
368bool IndexingContext::handleFunction(const FunctionDecl *D) {
369  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
370                 D->isThisDeclarationADefinition());
371  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
372}
373
374bool IndexingContext::handleVar(const VarDecl *D) {
375  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
376                 /*isContainer=*/false);
377  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
378}
379
380bool IndexingContext::handleField(const FieldDecl *D) {
381  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
382                 /*isContainer=*/false);
383  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
384}
385
386bool IndexingContext::handleEnumerator(const EnumConstantDecl *D) {
387  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
388                 /*isContainer=*/false);
389  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
390}
391
392bool IndexingContext::handleTagDecl(const TagDecl *D) {
393  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(D))
394    return handleCXXRecordDecl(CXXRD, D);
395
396  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
397                 D->isThisDeclarationADefinition());
398  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
399}
400
401bool IndexingContext::handleTypedefName(const TypedefNameDecl *D) {
402  DeclInfo DInfo(!D->isFirstDeclaration(), /*isDefinition=*/true,
403                 /*isContainer=*/false);
404  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
405}
406
407bool IndexingContext::handleObjCInterface(const ObjCInterfaceDecl *D) {
408  // For @class forward declarations, suppress them the same way as references.
409  if (!D->isThisDeclarationADefinition()) {
410    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
411      return false; // already occurred.
412
413    // FIXME: This seems like the wrong definition for redeclaration.
414    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
415    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true, isRedeclaration,
416                                    /*isImplementation=*/false);
417    return handleObjCContainer(D, D->getLocation(),
418                               MakeCursorObjCClassRef(D, D->getLocation(),
419                                                      CXTU),
420                               ContDInfo);
421  }
422
423  ScratchAlloc SA(*this);
424
425  CXIdxBaseClassInfo BaseClass;
426  EntityInfo BaseEntity;
427  BaseClass.cursor = clang_getNullCursor();
428  if (ObjCInterfaceDecl *SuperD = D->getSuperClass()) {
429    getEntityInfo(SuperD, BaseEntity, SA);
430    SourceLocation SuperLoc = D->getSuperClassLoc();
431    BaseClass.base = &BaseEntity;
432    BaseClass.cursor = MakeCursorObjCSuperClassRef(SuperD, SuperLoc, CXTU);
433    BaseClass.loc = getIndexLoc(SuperLoc);
434
435    if (shouldSuppressRefs())
436      markEntityOccurrenceInFile(SuperD, SuperLoc);
437  }
438
439  ObjCProtocolList EmptyProtoList;
440  ObjCProtocolListInfo ProtInfo(D->isThisDeclarationADefinition()
441                                  ? D->getReferencedProtocols()
442                                  : EmptyProtoList,
443                                *this, SA);
444
445  ObjCInterfaceDeclInfo InterInfo(D);
446  InterInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
447  InterInfo.ObjCInterDeclInfo.containerInfo = &InterInfo.ObjCContDeclInfo;
448  InterInfo.ObjCInterDeclInfo.superInfo = D->getSuperClass() ? &BaseClass : 0;
449  InterInfo.ObjCInterDeclInfo.protocols = &InterInfo.ObjCProtoListInfo;
450
451  return handleObjCContainer(D, D->getLocation(), getCursor(D), InterInfo);
452}
453
454bool IndexingContext::handleObjCImplementation(
455                                              const ObjCImplementationDecl *D) {
456  ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/false,
457                      /*isRedeclaration=*/true,
458                      /*isImplementation=*/true);
459  return handleObjCContainer(D, D->getLocation(), getCursor(D), ContDInfo);
460}
461
462bool IndexingContext::handleObjCProtocol(const ObjCProtocolDecl *D) {
463  if (!D->isThisDeclarationADefinition()) {
464    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
465      return false; // already occurred.
466
467    // FIXME: This seems like the wrong definition for redeclaration.
468    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
469    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true,
470                                    isRedeclaration,
471                                    /*isImplementation=*/false);
472    return handleObjCContainer(D, D->getLocation(),
473                               MakeCursorObjCProtocolRef(D, D->getLocation(),
474                                                         CXTU),
475                               ContDInfo);
476  }
477
478  ScratchAlloc SA(*this);
479  ObjCProtocolList EmptyProtoList;
480  ObjCProtocolListInfo ProtListInfo(D->isThisDeclarationADefinition()
481                                      ? D->getReferencedProtocols()
482                                      : EmptyProtoList,
483                                    *this, SA);
484
485  ObjCProtocolDeclInfo ProtInfo(D);
486  ProtInfo.ObjCProtoRefListInfo = ProtListInfo.getListInfo();
487
488  return handleObjCContainer(D, D->getLocation(), getCursor(D), ProtInfo);
489}
490
491bool IndexingContext::handleObjCCategory(const ObjCCategoryDecl *D) {
492  ScratchAlloc SA(*this);
493
494  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/false);
495  EntityInfo ClassEntity;
496  const ObjCInterfaceDecl *IFaceD = D->getClassInterface();
497  SourceLocation ClassLoc = D->getLocation();
498  SourceLocation CategoryLoc = D->IsClassExtension() ? ClassLoc
499                                                     : D->getCategoryNameLoc();
500  getEntityInfo(IFaceD, ClassEntity, SA);
501
502  if (shouldSuppressRefs())
503    markEntityOccurrenceInFile(IFaceD, ClassLoc);
504
505  ObjCProtocolListInfo ProtInfo(D->getReferencedProtocols(), *this, SA);
506
507  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
508  if (IFaceD) {
509    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
510    CatDInfo.ObjCCatDeclInfo.classCursor =
511        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
512  } else {
513    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
514    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
515  }
516  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
517  CatDInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
518  CatDInfo.ObjCCatDeclInfo.protocols = &CatDInfo.ObjCProtoListInfo;
519
520  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
521}
522
523bool IndexingContext::handleObjCCategoryImpl(const ObjCCategoryImplDecl *D) {
524  ScratchAlloc SA(*this);
525
526  const ObjCCategoryDecl *CatD = D->getCategoryDecl();
527  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/true);
528  EntityInfo ClassEntity;
529  const ObjCInterfaceDecl *IFaceD = CatD->getClassInterface();
530  SourceLocation ClassLoc = D->getLocation();
531  SourceLocation CategoryLoc = D->getCategoryNameLoc();
532  getEntityInfo(IFaceD, ClassEntity, SA);
533
534  if (shouldSuppressRefs())
535    markEntityOccurrenceInFile(IFaceD, ClassLoc);
536
537  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
538  if (IFaceD) {
539    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
540    CatDInfo.ObjCCatDeclInfo.classCursor =
541        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
542  } else {
543    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
544    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
545  }
546  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
547  CatDInfo.ObjCCatDeclInfo.protocols = 0;
548
549  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
550}
551
552bool IndexingContext::handleObjCMethod(const ObjCMethodDecl *D) {
553  DeclInfo DInfo(!D->isCanonicalDecl(), D->isThisDeclarationADefinition(),
554                 D->isThisDeclarationADefinition());
555  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
556}
557
558bool IndexingContext::handleSynthesizedObjCProperty(
559                                                const ObjCPropertyImplDecl *D) {
560  ObjCPropertyDecl *PD = D->getPropertyDecl();
561  return handleReference(PD, D->getLocation(), getCursor(D), 0, D->getDeclContext());
562}
563
564bool IndexingContext::handleSynthesizedObjCMethod(const ObjCMethodDecl *D,
565                                                  SourceLocation Loc,
566                                                 const DeclContext *LexicalDC) {
567  DeclInfo DInfo(/*isRedeclaration=*/true, /*isDefinition=*/true,
568                 /*isContainer=*/false);
569  return handleDecl(D, Loc, getCursor(D), DInfo, LexicalDC);
570}
571
572bool IndexingContext::handleObjCProperty(const ObjCPropertyDecl *D) {
573  ScratchAlloc SA(*this);
574
575  ObjCPropertyDeclInfo DInfo;
576  EntityInfo GetterEntity;
577  EntityInfo SetterEntity;
578
579  DInfo.ObjCPropDeclInfo.declInfo = &DInfo;
580
581  if (ObjCMethodDecl *Getter = D->getGetterMethodDecl()) {
582    getEntityInfo(Getter, GetterEntity, SA);
583    DInfo.ObjCPropDeclInfo.getter = &GetterEntity;
584  } else {
585    DInfo.ObjCPropDeclInfo.getter = 0;
586  }
587  if (ObjCMethodDecl *Setter = D->getSetterMethodDecl()) {
588    getEntityInfo(Setter, SetterEntity, SA);
589    DInfo.ObjCPropDeclInfo.setter = &SetterEntity;
590  } else {
591    DInfo.ObjCPropDeclInfo.setter = 0;
592  }
593
594  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
595}
596
597bool IndexingContext::handleNamespace(const NamespaceDecl *D) {
598  DeclInfo DInfo(/*isRedeclaration=*/!D->isOriginalNamespace(),
599                 /*isDefinition=*/true,
600                 /*isContainer=*/true);
601  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
602}
603
604bool IndexingContext::handleClassTemplate(const ClassTemplateDecl *D) {
605  return handleCXXRecordDecl(D->getTemplatedDecl(), D);
606}
607
608bool IndexingContext::handleFunctionTemplate(const FunctionTemplateDecl *D) {
609  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
610                 /*isDefinition=*/D->isThisDeclarationADefinition(),
611                 /*isContainer=*/D->isThisDeclarationADefinition());
612  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
613}
614
615bool IndexingContext::handleTypeAliasTemplate(const TypeAliasTemplateDecl *D) {
616  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
617                 /*isDefinition=*/true, /*isContainer=*/false);
618  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
619}
620
621bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
622                                      const NamedDecl *Parent,
623                                      const DeclContext *DC,
624                                      const Expr *E,
625                                      CXIdxEntityRefKind Kind) {
626  if (!D)
627    return false;
628
629  CXCursor Cursor = E ? MakeCXCursor(const_cast<Expr*>(E),
630                                     const_cast<Decl*>(cast<Decl>(DC)), CXTU)
631                      : getRefCursor(D, Loc);
632  return handleReference(D, Loc, Cursor, Parent, DC, E, Kind);
633}
634
635bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
636                                      CXCursor Cursor,
637                                      const NamedDecl *Parent,
638                                      const DeclContext *DC,
639                                      const Expr *E,
640                                      CXIdxEntityRefKind Kind) {
641  if (!CB.indexEntityReference)
642    return false;
643
644  if (!D)
645    return false;
646  if (Loc.isInvalid())
647    return false;
648  if (!shouldIndexFunctionLocalSymbols() && isFunctionLocalDecl(D))
649    return false;
650  if (isNotFromSourceFile(D->getLocation()))
651    return false;
652  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
653    return false;
654
655  if (shouldSuppressRefs()) {
656    if (markEntityOccurrenceInFile(D, Loc))
657      return false; // already occurred.
658  }
659
660  ScratchAlloc SA(*this);
661  EntityInfo RefEntity, ParentEntity;
662  getEntityInfo(D, RefEntity, SA);
663  if (!RefEntity.USR)
664    return false;
665
666  getEntityInfo(Parent, ParentEntity, SA);
667
668  ContainerInfo Container;
669  getContainerInfo(DC, Container);
670
671  CXIdxEntityRefInfo Info = { Kind,
672                              Cursor,
673                              getIndexLoc(Loc),
674                              &RefEntity,
675                              Parent ? &ParentEntity : 0,
676                              &Container };
677  CB.indexEntityReference(ClientData, &Info);
678  return true;
679}
680
681bool IndexingContext::isNotFromSourceFile(SourceLocation Loc) const {
682  if (Loc.isInvalid())
683    return true;
684  SourceManager &SM = Ctx->getSourceManager();
685  SourceLocation FileLoc = SM.getFileLoc(Loc);
686  FileID FID = SM.getFileID(FileLoc);
687  return SM.getFileEntryForID(FID) == 0;
688}
689
690void IndexingContext::addContainerInMap(const DeclContext *DC,
691                                        CXIdxClientContainer container) {
692  if (!DC)
693    return;
694
695  ContainerMapTy::iterator I = ContainerMap.find(DC);
696  if (I == ContainerMap.end()) {
697    if (container)
698      ContainerMap[DC] = container;
699    return;
700  }
701  // Allow changing the container of a previously seen DeclContext so we
702  // can handle invalid user code, like a function re-definition.
703  if (container)
704    I->second = container;
705  else
706    ContainerMap.erase(I);
707}
708
709CXIdxClientEntity IndexingContext::getClientEntity(const Decl *D) const {
710  if (!D)
711    return 0;
712  EntityMapTy::const_iterator I = EntityMap.find(D);
713  if (I == EntityMap.end())
714    return 0;
715  return I->second;
716}
717
718void IndexingContext::setClientEntity(const Decl *D, CXIdxClientEntity client) {
719  if (!D)
720    return;
721  EntityMap[D] = client;
722}
723
724bool IndexingContext::handleCXXRecordDecl(const CXXRecordDecl *RD,
725                                          const NamedDecl *OrigD) {
726  if (RD->isThisDeclarationADefinition()) {
727    ScratchAlloc SA(*this);
728    CXXClassDeclInfo CXXDInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
729                           /*isDefinition=*/RD->isThisDeclarationADefinition());
730    CXXBasesListInfo BaseList(RD, *this, SA);
731    CXXDInfo.CXXClassInfo.declInfo = &CXXDInfo;
732    CXXDInfo.CXXClassInfo.bases = BaseList.getBases();
733    CXXDInfo.CXXClassInfo.numBases = BaseList.getNumBases();
734
735    if (shouldSuppressRefs()) {
736      // Go through bases and mark them as referenced.
737      for (unsigned i = 0, e = BaseList.getNumBases(); i != e; ++i) {
738        const CXIdxBaseClassInfo *baseInfo = BaseList.getBases()[i];
739        if (baseInfo->base) {
740          const NamedDecl *BaseD = BaseList.BaseEntities[i].Dcl;
741          SourceLocation
742            Loc = SourceLocation::getFromRawEncoding(baseInfo->loc.int_data);
743          markEntityOccurrenceInFile(BaseD, Loc);
744        }
745      }
746    }
747
748    return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), CXXDInfo);
749  }
750
751  DeclInfo DInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
752                 /*isDefinition=*/RD->isThisDeclarationADefinition(),
753                 /*isContainer=*/RD->isThisDeclarationADefinition());
754  return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), DInfo);
755}
756
757bool IndexingContext::markEntityOccurrenceInFile(const NamedDecl *D,
758                                                 SourceLocation Loc) {
759  if (!D || Loc.isInvalid())
760    return true;
761
762  SourceManager &SM = Ctx->getSourceManager();
763  D = getEntityDecl(D);
764
765  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SM.getFileLoc(Loc));
766  FileID FID = LocInfo.first;
767  if (FID.isInvalid())
768    return true;
769
770  const FileEntry *FE = SM.getFileEntryForID(FID);
771  if (!FE)
772    return true;
773  RefFileOccurence RefOccur(FE, D);
774  std::pair<llvm::DenseSet<RefFileOccurence>::iterator, bool>
775  res = RefFileOccurences.insert(RefOccur);
776  if (!res.second)
777    return true; // already in map.
778
779  return false;
780}
781
782const NamedDecl *IndexingContext::getEntityDecl(const NamedDecl *D) const {
783  assert(D);
784  D = cast<NamedDecl>(D->getCanonicalDecl());
785
786  if (const ObjCImplementationDecl *
787               ImplD = dyn_cast<ObjCImplementationDecl>(D)) {
788    return getEntityDecl(ImplD->getClassInterface());
789
790  } else if (const ObjCCategoryImplDecl *
791               CatImplD = dyn_cast<ObjCCategoryImplDecl>(D)) {
792    return getEntityDecl(CatImplD->getCategoryDecl());
793  } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
794    if (FunctionTemplateDecl *TemplD = FD->getDescribedFunctionTemplate())
795      return getEntityDecl(TemplD);
796  } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
797    if (ClassTemplateDecl *TemplD = RD->getDescribedClassTemplate())
798      return getEntityDecl(TemplD);
799  }
800
801  return D;
802}
803
804const DeclContext *
805IndexingContext::getEntityContainer(const Decl *D) const {
806  const DeclContext *DC = dyn_cast<DeclContext>(D);
807  if (DC)
808    return DC;
809
810  if (const ClassTemplateDecl *ClassTempl = dyn_cast<ClassTemplateDecl>(D)) {
811    DC = ClassTempl->getTemplatedDecl();
812  } if (const FunctionTemplateDecl *
813          FuncTempl = dyn_cast<FunctionTemplateDecl>(D)) {
814    DC = FuncTempl->getTemplatedDecl();
815  }
816
817  return DC;
818}
819
820CXIdxClientContainer
821IndexingContext::getClientContainerForDC(const DeclContext *DC) const {
822  if (!DC)
823    return 0;
824
825  ContainerMapTy::const_iterator I = ContainerMap.find(DC);
826  if (I == ContainerMap.end())
827    return 0;
828
829  return I->second;
830}
831
832CXIdxClientFile IndexingContext::getIndexFile(const FileEntry *File) {
833  if (!File)
834    return 0;
835
836  FileMapTy::iterator FI = FileMap.find(File);
837  if (FI != FileMap.end())
838    return FI->second;
839
840  return 0;
841}
842
843CXIdxLoc IndexingContext::getIndexLoc(SourceLocation Loc) const {
844  CXIdxLoc idxLoc =  { {0, 0}, 0 };
845  if (Loc.isInvalid())
846    return idxLoc;
847
848  idxLoc.ptr_data[0] = (void*)this;
849  idxLoc.int_data = Loc.getRawEncoding();
850  return idxLoc;
851}
852
853void IndexingContext::translateLoc(SourceLocation Loc,
854                                   CXIdxClientFile *indexFile, CXFile *file,
855                                   unsigned *line, unsigned *column,
856                                   unsigned *offset) {
857  if (Loc.isInvalid())
858    return;
859
860  SourceManager &SM = Ctx->getSourceManager();
861  Loc = SM.getFileLoc(Loc);
862
863  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
864  FileID FID = LocInfo.first;
865  unsigned FileOffset = LocInfo.second;
866
867  if (FID.isInvalid())
868    return;
869
870  const FileEntry *FE = SM.getFileEntryForID(FID);
871  if (indexFile)
872    *indexFile = getIndexFile(FE);
873  if (file)
874    *file = (void *)FE;
875  if (line)
876    *line = SM.getLineNumber(FID, FileOffset);
877  if (column)
878    *column = SM.getColumnNumber(FID, FileOffset);
879  if (offset)
880    *offset = FileOffset;
881}
882
883void IndexingContext::getEntityInfo(const NamedDecl *D,
884                                    EntityInfo &EntityInfo,
885                                    ScratchAlloc &SA) {
886  if (!D)
887    return;
888
889  D = getEntityDecl(D);
890  EntityInfo.cursor = getCursor(D);
891  EntityInfo.Dcl = D;
892  EntityInfo.IndexCtx = this;
893  EntityInfo.kind = CXIdxEntity_Unexposed;
894  EntityInfo.templateKind = CXIdxEntity_NonTemplate;
895  EntityInfo.lang = CXIdxEntityLang_C;
896
897  if (D->hasAttrs()) {
898    EntityInfo.AttrList = AttrListInfo::create(D, *this);
899    EntityInfo.attributes = EntityInfo.AttrList->getAttrs();
900    EntityInfo.numAttributes = EntityInfo.AttrList->getNumAttrs();
901  }
902
903  if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
904    switch (TD->getTagKind()) {
905    case TTK_Struct:
906      EntityInfo.kind = CXIdxEntity_Struct; break;
907    case TTK_Union:
908      EntityInfo.kind = CXIdxEntity_Union; break;
909    case TTK_Class:
910      EntityInfo.kind = CXIdxEntity_CXXClass;
911      EntityInfo.lang = CXIdxEntityLang_CXX;
912      break;
913    case TTK_Interface:
914      EntityInfo.kind = CXIdxEntity_CXXInterface;
915      EntityInfo.lang = CXIdxEntityLang_CXX;
916      break;
917    case TTK_Enum:
918      EntityInfo.kind = CXIdxEntity_Enum; break;
919    }
920
921    if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D))
922      if (!CXXRec->isCLike())
923        EntityInfo.lang = CXIdxEntityLang_CXX;
924
925    if (isa<ClassTemplatePartialSpecializationDecl>(D)) {
926      EntityInfo.templateKind = CXIdxEntity_TemplatePartialSpecialization;
927    } else if (isa<ClassTemplateSpecializationDecl>(D)) {
928      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
929    }
930
931  } else {
932    switch (D->getKind()) {
933    case Decl::Typedef:
934      EntityInfo.kind = CXIdxEntity_Typedef; break;
935    case Decl::Function:
936      EntityInfo.kind = CXIdxEntity_Function;
937      break;
938    case Decl::ParmVar:
939      EntityInfo.kind = CXIdxEntity_Variable;
940      break;
941    case Decl::Var:
942      EntityInfo.kind = CXIdxEntity_Variable;
943      if (isa<CXXRecordDecl>(D->getDeclContext())) {
944        EntityInfo.kind = CXIdxEntity_CXXStaticVariable;
945        EntityInfo.lang = CXIdxEntityLang_CXX;
946      }
947      break;
948    case Decl::Field:
949      EntityInfo.kind = CXIdxEntity_Field;
950      if (const CXXRecordDecl *
951            CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {
952        // FIXME: isPOD check is not sufficient, a POD can contain methods,
953        // we want a isCStructLike check.
954        if (!CXXRec->isPOD())
955          EntityInfo.lang = CXIdxEntityLang_CXX;
956      }
957      break;
958    case Decl::EnumConstant:
959      EntityInfo.kind = CXIdxEntity_EnumConstant; break;
960    case Decl::ObjCInterface:
961      EntityInfo.kind = CXIdxEntity_ObjCClass;
962      EntityInfo.lang = CXIdxEntityLang_ObjC;
963      break;
964    case Decl::ObjCProtocol:
965      EntityInfo.kind = CXIdxEntity_ObjCProtocol;
966      EntityInfo.lang = CXIdxEntityLang_ObjC;
967      break;
968    case Decl::ObjCCategory:
969      EntityInfo.kind = CXIdxEntity_ObjCCategory;
970      EntityInfo.lang = CXIdxEntityLang_ObjC;
971      break;
972    case Decl::ObjCMethod:
973      if (cast<ObjCMethodDecl>(D)->isInstanceMethod())
974        EntityInfo.kind = CXIdxEntity_ObjCInstanceMethod;
975      else
976        EntityInfo.kind = CXIdxEntity_ObjCClassMethod;
977      EntityInfo.lang = CXIdxEntityLang_ObjC;
978      break;
979    case Decl::ObjCProperty:
980      EntityInfo.kind = CXIdxEntity_ObjCProperty;
981      EntityInfo.lang = CXIdxEntityLang_ObjC;
982      break;
983    case Decl::ObjCIvar:
984      EntityInfo.kind = CXIdxEntity_ObjCIvar;
985      EntityInfo.lang = CXIdxEntityLang_ObjC;
986      break;
987    case Decl::Namespace:
988      EntityInfo.kind = CXIdxEntity_CXXNamespace;
989      EntityInfo.lang = CXIdxEntityLang_CXX;
990      break;
991    case Decl::NamespaceAlias:
992      EntityInfo.kind = CXIdxEntity_CXXNamespaceAlias;
993      EntityInfo.lang = CXIdxEntityLang_CXX;
994      break;
995    case Decl::CXXConstructor:
996      EntityInfo.kind = CXIdxEntity_CXXConstructor;
997      EntityInfo.lang = CXIdxEntityLang_CXX;
998      break;
999    case Decl::CXXDestructor:
1000      EntityInfo.kind = CXIdxEntity_CXXDestructor;
1001      EntityInfo.lang = CXIdxEntityLang_CXX;
1002      break;
1003    case Decl::CXXConversion:
1004      EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1005      EntityInfo.lang = CXIdxEntityLang_CXX;
1006      break;
1007    case Decl::CXXMethod: {
1008      const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
1009      if (MD->isStatic())
1010        EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1011      else
1012        EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1013      EntityInfo.lang = CXIdxEntityLang_CXX;
1014      break;
1015    }
1016    case Decl::ClassTemplate:
1017      EntityInfo.kind = CXIdxEntity_CXXClass;
1018      EntityInfo.templateKind = CXIdxEntity_Template;
1019      break;
1020    case Decl::FunctionTemplate:
1021      EntityInfo.kind = CXIdxEntity_Function;
1022      EntityInfo.templateKind = CXIdxEntity_Template;
1023      if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(
1024                           cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {
1025        if (isa<CXXConstructorDecl>(MD))
1026          EntityInfo.kind = CXIdxEntity_CXXConstructor;
1027        else if (isa<CXXDestructorDecl>(MD))
1028          EntityInfo.kind = CXIdxEntity_CXXDestructor;
1029        else if (isa<CXXConversionDecl>(MD))
1030          EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1031        else {
1032          if (MD->isStatic())
1033            EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1034          else
1035            EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1036        }
1037      }
1038      break;
1039    case Decl::TypeAliasTemplate:
1040      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1041      EntityInfo.templateKind = CXIdxEntity_Template;
1042      break;
1043    case Decl::TypeAlias:
1044      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1045      EntityInfo.lang = CXIdxEntityLang_CXX;
1046      break;
1047    default:
1048      break;
1049    }
1050  }
1051
1052  if (EntityInfo.kind == CXIdxEntity_Unexposed)
1053    return;
1054
1055  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1056    if (FD->getTemplatedKind() ==
1057          FunctionDecl::TK_FunctionTemplateSpecialization)
1058      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
1059  }
1060
1061  if (EntityInfo.templateKind != CXIdxEntity_NonTemplate)
1062    EntityInfo.lang = CXIdxEntityLang_CXX;
1063
1064  if (IdentifierInfo *II = D->getIdentifier()) {
1065    EntityInfo.name = SA.toCStr(II->getName());
1066
1067  } else if (isa<TagDecl>(D) || isa<FieldDecl>(D) || isa<NamespaceDecl>(D)) {
1068    EntityInfo.name = 0; // anonymous tag/field/namespace.
1069
1070  } else {
1071    SmallString<256> StrBuf;
1072    {
1073      llvm::raw_svector_ostream OS(StrBuf);
1074      D->printName(OS);
1075    }
1076    EntityInfo.name = SA.copyCStr(StrBuf.str());
1077  }
1078
1079  {
1080    SmallString<512> StrBuf;
1081    bool Ignore = getDeclCursorUSR(D, StrBuf);
1082    if (Ignore) {
1083      EntityInfo.USR = 0;
1084    } else {
1085      EntityInfo.USR = SA.copyCStr(StrBuf.str());
1086    }
1087  }
1088}
1089
1090void IndexingContext::getContainerInfo(const DeclContext *DC,
1091                                       ContainerInfo &ContInfo) {
1092  ContInfo.cursor = getCursor(cast<Decl>(DC));
1093  ContInfo.DC = DC;
1094  ContInfo.IndexCtx = this;
1095}
1096
1097CXCursor IndexingContext::getRefCursor(const NamedDecl *D, SourceLocation Loc) {
1098  if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
1099    return MakeCursorTypeRef(TD, Loc, CXTU);
1100  if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
1101    return MakeCursorObjCClassRef(ID, Loc, CXTU);
1102  if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
1103    return MakeCursorObjCProtocolRef(PD, Loc, CXTU);
1104  if (const TemplateDecl *Template = dyn_cast<TemplateDecl>(D))
1105    return MakeCursorTemplateRef(Template, Loc, CXTU);
1106  if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(D))
1107    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1108  if (const NamespaceAliasDecl *Namespace = dyn_cast<NamespaceAliasDecl>(D))
1109    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1110  if (const FieldDecl *Field = dyn_cast<FieldDecl>(D))
1111    return MakeCursorMemberRef(Field, Loc, CXTU);
1112  if (const VarDecl *Var = dyn_cast<VarDecl>(D))
1113    return MakeCursorVariableRef(Var, Loc, CXTU);
1114
1115  return clang_getNullCursor();
1116}
1117
1118bool IndexingContext::shouldIgnoreIfImplicit(const Decl *D) {
1119  if (isa<ObjCInterfaceDecl>(D))
1120    return false;
1121  if (isa<ObjCCategoryDecl>(D))
1122    return false;
1123  if (isa<ObjCIvarDecl>(D))
1124    return false;
1125  if (isa<ObjCMethodDecl>(D))
1126    return false;
1127  if (isa<ImportDecl>(D))
1128    return false;
1129  return true;
1130}
1131
1132bool IndexingContext::isTemplateImplicitInstantiation(const Decl *D) {
1133  if (const ClassTemplateSpecializationDecl *
1134        SD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1135    return SD->getSpecializationKind() == TSK_ImplicitInstantiation;
1136  }
1137  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1138    return FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation;
1139  }
1140  return false;
1141}
1142