IndexingContext.cpp revision 5694feb5ccd6eb862cb600b55753cecc13794471 
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, 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  cxtu::getASTUnit(CXTU)->setASTContext(&ctx);
200}
201
202void IndexingContext::setPreprocessor(Preprocessor &PP) {
203  cxtu::getASTUnit(CXTU)->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 =
235      CB.enteredMainFile(ClientData,
236                         static_cast<CXFile>(const_cast<FileEntry *>(File)), 0);
237    FileMap[File] = idxFile;
238  }
239}
240
241void IndexingContext::ppIncludedFile(SourceLocation hashLoc,
242                                     StringRef filename,
243                                     const FileEntry *File,
244                                     bool isImport, bool isAngled,
245                                     bool isModuleImport) {
246  if (!CB.ppIncludedFile)
247    return;
248
249  ScratchAlloc SA(*this);
250  CXIdxIncludedFileInfo Info = { getIndexLoc(hashLoc),
251                                 SA.toCStr(filename),
252                                 static_cast<CXFile>(
253                                   const_cast<FileEntry *>(File)),
254                                 isImport, isAngled, isModuleImport };
255  CXIdxClientFile idxFile = CB.ppIncludedFile(ClientData, &Info);
256  FileMap[File] = idxFile;
257}
258
259void IndexingContext::importedModule(const ImportDecl *ImportD) {
260  if (!CB.importedASTFile)
261    return;
262
263  Module *Mod = ImportD->getImportedModule();
264  if (!Mod)
265    return;
266  std::string ModuleName = Mod->getFullModuleName();
267
268  CXIdxImportedASTFileInfo Info = {
269                                    static_cast<CXFile>(
270                                    const_cast<FileEntry *>(Mod->getASTFile())),
271                                    Mod,
272                                    getIndexLoc(ImportD->getLocation()),
273                                    ImportD->isImplicit()
274                                  };
275  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
276  (void)astFile;
277}
278
279void IndexingContext::importedPCH(const FileEntry *File) {
280  if (!CB.importedASTFile)
281    return;
282
283  CXIdxImportedASTFileInfo Info = {
284                                    static_cast<CXFile>(
285                                      const_cast<FileEntry *>(File)),
286                                    /*module=*/NULL,
287                                    getIndexLoc(SourceLocation()),
288                                    /*isImplicit=*/false
289                                  };
290  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
291  (void)astFile;
292}
293
294void IndexingContext::startedTranslationUnit() {
295  CXIdxClientContainer idxCont = 0;
296  if (CB.startedTranslationUnit)
297    idxCont = CB.startedTranslationUnit(ClientData, 0);
298  addContainerInMap(Ctx->getTranslationUnitDecl(), idxCont);
299}
300
301void IndexingContext::handleDiagnosticSet(CXDiagnostic CXDiagSet) {
302  if (!CB.diagnostic)
303    return;
304
305  CB.diagnostic(ClientData, CXDiagSet, 0);
306}
307
308bool IndexingContext::handleDecl(const NamedDecl *D,
309                                 SourceLocation Loc, CXCursor Cursor,
310                                 DeclInfo &DInfo,
311                                 const DeclContext *LexicalDC) {
312  if (!CB.indexDeclaration || !D)
313    return false;
314  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
315    return false;
316
317  ScratchAlloc SA(*this);
318  getEntityInfo(D, DInfo.EntInfo, SA);
319  if ((!shouldIndexFunctionLocalSymbols() && !DInfo.EntInfo.USR)
320      || Loc.isInvalid())
321    return false;
322
323  if (!LexicalDC)
324    LexicalDC = D->getLexicalDeclContext();
325
326  if (shouldSuppressRefs())
327    markEntityOccurrenceInFile(D, Loc);
328
329  DInfo.entityInfo = &DInfo.EntInfo;
330  DInfo.cursor = Cursor;
331  DInfo.loc = getIndexLoc(Loc);
332  DInfo.isImplicit = D->isImplicit();
333
334  DInfo.attributes = DInfo.EntInfo.attributes;
335  DInfo.numAttributes = DInfo.EntInfo.numAttributes;
336
337  getContainerInfo(D->getDeclContext(), DInfo.SemanticContainer);
338  DInfo.semanticContainer = &DInfo.SemanticContainer;
339
340  if (LexicalDC == D->getDeclContext()) {
341    DInfo.lexicalContainer = &DInfo.SemanticContainer;
342  } else if (isTemplateImplicitInstantiation(D)) {
343    // Implicit instantiations have the lexical context of where they were
344    // instantiated first. We choose instead the semantic context because:
345    // 1) at the time that we see the instantiation we have not seen the
346    //   function where it occurred yet.
347    // 2) the lexical context of the first instantiation is not useful
348    //   information anyway.
349    DInfo.lexicalContainer = &DInfo.SemanticContainer;
350  } else {
351    getContainerInfo(LexicalDC, DInfo.LexicalContainer);
352    DInfo.lexicalContainer = &DInfo.LexicalContainer;
353  }
354
355  if (DInfo.isContainer) {
356    getContainerInfo(getEntityContainer(D), DInfo.DeclAsContainer);
357    DInfo.declAsContainer = &DInfo.DeclAsContainer;
358  }
359
360  CB.indexDeclaration(ClientData, &DInfo);
361  return true;
362}
363
364bool IndexingContext::handleObjCContainer(const ObjCContainerDecl *D,
365                                          SourceLocation Loc, CXCursor Cursor,
366                                          ObjCContainerDeclInfo &ContDInfo) {
367  ContDInfo.ObjCContDeclInfo.declInfo = &ContDInfo;
368  return handleDecl(D, Loc, Cursor, ContDInfo);
369}
370
371bool IndexingContext::handleFunction(const FunctionDecl *D) {
372  bool isDef = D->isThisDeclarationADefinition();
373  bool isContainer = isDef;
374  bool isSkipped = false;
375  if (D->hasSkippedBody()) {
376    isSkipped = true;
377    isDef = true;
378    isContainer = false;
379  }
380
381  DeclInfo DInfo(!D->isFirstDeclaration(), isDef, isContainer);
382  if (isSkipped)
383    DInfo.flags |= CXIdxDeclFlag_Skipped;
384  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
385}
386
387bool IndexingContext::handleVar(const VarDecl *D) {
388  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
389                 /*isContainer=*/false);
390  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
391}
392
393bool IndexingContext::handleField(const FieldDecl *D) {
394  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
395                 /*isContainer=*/false);
396  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
397}
398
399bool IndexingContext::handleEnumerator(const EnumConstantDecl *D) {
400  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
401                 /*isContainer=*/false);
402  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
403}
404
405bool IndexingContext::handleTagDecl(const TagDecl *D) {
406  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(D))
407    return handleCXXRecordDecl(CXXRD, D);
408
409  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
410                 D->isThisDeclarationADefinition());
411  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
412}
413
414bool IndexingContext::handleTypedefName(const TypedefNameDecl *D) {
415  DeclInfo DInfo(!D->isFirstDeclaration(), /*isDefinition=*/true,
416                 /*isContainer=*/false);
417  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
418}
419
420bool IndexingContext::handleObjCInterface(const ObjCInterfaceDecl *D) {
421  // For @class forward declarations, suppress them the same way as references.
422  if (!D->isThisDeclarationADefinition()) {
423    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
424      return false; // already occurred.
425
426    // FIXME: This seems like the wrong definition for redeclaration.
427    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
428    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true, isRedeclaration,
429                                    /*isImplementation=*/false);
430    return handleObjCContainer(D, D->getLocation(),
431                               MakeCursorObjCClassRef(D, D->getLocation(),
432                                                      CXTU),
433                               ContDInfo);
434  }
435
436  ScratchAlloc SA(*this);
437
438  CXIdxBaseClassInfo BaseClass;
439  EntityInfo BaseEntity;
440  BaseClass.cursor = clang_getNullCursor();
441  if (ObjCInterfaceDecl *SuperD = D->getSuperClass()) {
442    getEntityInfo(SuperD, BaseEntity, SA);
443    SourceLocation SuperLoc = D->getSuperClassLoc();
444    BaseClass.base = &BaseEntity;
445    BaseClass.cursor = MakeCursorObjCSuperClassRef(SuperD, SuperLoc, CXTU);
446    BaseClass.loc = getIndexLoc(SuperLoc);
447
448    if (shouldSuppressRefs())
449      markEntityOccurrenceInFile(SuperD, SuperLoc);
450  }
451
452  ObjCProtocolList EmptyProtoList;
453  ObjCProtocolListInfo ProtInfo(D->isThisDeclarationADefinition()
454                                  ? D->getReferencedProtocols()
455                                  : EmptyProtoList,
456                                *this, SA);
457
458  ObjCInterfaceDeclInfo InterInfo(D);
459  InterInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
460  InterInfo.ObjCInterDeclInfo.containerInfo = &InterInfo.ObjCContDeclInfo;
461  InterInfo.ObjCInterDeclInfo.superInfo = D->getSuperClass() ? &BaseClass : 0;
462  InterInfo.ObjCInterDeclInfo.protocols = &InterInfo.ObjCProtoListInfo;
463
464  return handleObjCContainer(D, D->getLocation(), getCursor(D), InterInfo);
465}
466
467bool IndexingContext::handleObjCImplementation(
468                                              const ObjCImplementationDecl *D) {
469  ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/false,
470                      /*isRedeclaration=*/true,
471                      /*isImplementation=*/true);
472  return handleObjCContainer(D, D->getLocation(), getCursor(D), ContDInfo);
473}
474
475bool IndexingContext::handleObjCProtocol(const ObjCProtocolDecl *D) {
476  if (!D->isThisDeclarationADefinition()) {
477    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
478      return false; // already occurred.
479
480    // FIXME: This seems like the wrong definition for redeclaration.
481    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
482    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true,
483                                    isRedeclaration,
484                                    /*isImplementation=*/false);
485    return handleObjCContainer(D, D->getLocation(),
486                               MakeCursorObjCProtocolRef(D, D->getLocation(),
487                                                         CXTU),
488                               ContDInfo);
489  }
490
491  ScratchAlloc SA(*this);
492  ObjCProtocolList EmptyProtoList;
493  ObjCProtocolListInfo ProtListInfo(D->isThisDeclarationADefinition()
494                                      ? D->getReferencedProtocols()
495                                      : EmptyProtoList,
496                                    *this, SA);
497
498  ObjCProtocolDeclInfo ProtInfo(D);
499  ProtInfo.ObjCProtoRefListInfo = ProtListInfo.getListInfo();
500
501  return handleObjCContainer(D, D->getLocation(), getCursor(D), ProtInfo);
502}
503
504bool IndexingContext::handleObjCCategory(const ObjCCategoryDecl *D) {
505  ScratchAlloc SA(*this);
506
507  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/false);
508  EntityInfo ClassEntity;
509  const ObjCInterfaceDecl *IFaceD = D->getClassInterface();
510  SourceLocation ClassLoc = D->getLocation();
511  SourceLocation CategoryLoc = D->IsClassExtension() ? ClassLoc
512                                                     : D->getCategoryNameLoc();
513  getEntityInfo(IFaceD, ClassEntity, SA);
514
515  if (shouldSuppressRefs())
516    markEntityOccurrenceInFile(IFaceD, ClassLoc);
517
518  ObjCProtocolListInfo ProtInfo(D->getReferencedProtocols(), *this, SA);
519
520  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
521  if (IFaceD) {
522    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
523    CatDInfo.ObjCCatDeclInfo.classCursor =
524        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
525  } else {
526    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
527    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
528  }
529  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
530  CatDInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
531  CatDInfo.ObjCCatDeclInfo.protocols = &CatDInfo.ObjCProtoListInfo;
532
533  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
534}
535
536bool IndexingContext::handleObjCCategoryImpl(const ObjCCategoryImplDecl *D) {
537  ScratchAlloc SA(*this);
538
539  const ObjCCategoryDecl *CatD = D->getCategoryDecl();
540  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/true);
541  EntityInfo ClassEntity;
542  const ObjCInterfaceDecl *IFaceD = CatD->getClassInterface();
543  SourceLocation ClassLoc = D->getLocation();
544  SourceLocation CategoryLoc = D->getCategoryNameLoc();
545  getEntityInfo(IFaceD, ClassEntity, SA);
546
547  if (shouldSuppressRefs())
548    markEntityOccurrenceInFile(IFaceD, ClassLoc);
549
550  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
551  if (IFaceD) {
552    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
553    CatDInfo.ObjCCatDeclInfo.classCursor =
554        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
555  } else {
556    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
557    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
558  }
559  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
560  CatDInfo.ObjCCatDeclInfo.protocols = 0;
561
562  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
563}
564
565bool IndexingContext::handleObjCMethod(const ObjCMethodDecl *D) {
566  bool isDef = D->isThisDeclarationADefinition();
567  bool isContainer = isDef;
568  bool isSkipped = false;
569  if (D->hasSkippedBody()) {
570    isSkipped = true;
571    isDef = true;
572    isContainer = false;
573  }
574
575  DeclInfo DInfo(!D->isCanonicalDecl(), isDef, isContainer);
576  if (isSkipped)
577    DInfo.flags |= CXIdxDeclFlag_Skipped;
578  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
579}
580
581bool IndexingContext::handleSynthesizedObjCProperty(
582                                                const ObjCPropertyImplDecl *D) {
583  ObjCPropertyDecl *PD = D->getPropertyDecl();
584  return handleReference(PD, D->getLocation(), getCursor(D), 0, D->getDeclContext());
585}
586
587bool IndexingContext::handleSynthesizedObjCMethod(const ObjCMethodDecl *D,
588                                                  SourceLocation Loc,
589                                                 const DeclContext *LexicalDC) {
590  DeclInfo DInfo(/*isRedeclaration=*/true, /*isDefinition=*/true,
591                 /*isContainer=*/false);
592  return handleDecl(D, Loc, getCursor(D), DInfo, LexicalDC);
593}
594
595bool IndexingContext::handleObjCProperty(const ObjCPropertyDecl *D) {
596  ScratchAlloc SA(*this);
597
598  ObjCPropertyDeclInfo DInfo;
599  EntityInfo GetterEntity;
600  EntityInfo SetterEntity;
601
602  DInfo.ObjCPropDeclInfo.declInfo = &DInfo;
603
604  if (ObjCMethodDecl *Getter = D->getGetterMethodDecl()) {
605    getEntityInfo(Getter, GetterEntity, SA);
606    DInfo.ObjCPropDeclInfo.getter = &GetterEntity;
607  } else {
608    DInfo.ObjCPropDeclInfo.getter = 0;
609  }
610  if (ObjCMethodDecl *Setter = D->getSetterMethodDecl()) {
611    getEntityInfo(Setter, SetterEntity, SA);
612    DInfo.ObjCPropDeclInfo.setter = &SetterEntity;
613  } else {
614    DInfo.ObjCPropDeclInfo.setter = 0;
615  }
616
617  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
618}
619
620bool IndexingContext::handleNamespace(const NamespaceDecl *D) {
621  DeclInfo DInfo(/*isRedeclaration=*/!D->isOriginalNamespace(),
622                 /*isDefinition=*/true,
623                 /*isContainer=*/true);
624  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
625}
626
627bool IndexingContext::handleClassTemplate(const ClassTemplateDecl *D) {
628  return handleCXXRecordDecl(D->getTemplatedDecl(), D);
629}
630
631bool IndexingContext::handleFunctionTemplate(const FunctionTemplateDecl *D) {
632  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
633                 /*isDefinition=*/D->isThisDeclarationADefinition(),
634                 /*isContainer=*/D->isThisDeclarationADefinition());
635  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
636}
637
638bool IndexingContext::handleTypeAliasTemplate(const TypeAliasTemplateDecl *D) {
639  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
640                 /*isDefinition=*/true, /*isContainer=*/false);
641  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
642}
643
644bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
645                                      const NamedDecl *Parent,
646                                      const DeclContext *DC,
647                                      const Expr *E,
648                                      CXIdxEntityRefKind Kind) {
649  if (!D)
650    return false;
651
652  CXCursor Cursor = E ? MakeCXCursor(E, cast<Decl>(DC), CXTU)
653                      : getRefCursor(D, Loc);
654  return handleReference(D, Loc, Cursor, Parent, DC, E, Kind);
655}
656
657bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
658                                      CXCursor Cursor,
659                                      const NamedDecl *Parent,
660                                      const DeclContext *DC,
661                                      const Expr *E,
662                                      CXIdxEntityRefKind Kind) {
663  if (!CB.indexEntityReference)
664    return false;
665
666  if (!D)
667    return false;
668  if (Loc.isInvalid())
669    return false;
670  if (!shouldIndexFunctionLocalSymbols() && isFunctionLocalDecl(D))
671    return false;
672  if (isNotFromSourceFile(D->getLocation()))
673    return false;
674  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
675    return false;
676
677  if (shouldSuppressRefs()) {
678    if (markEntityOccurrenceInFile(D, Loc))
679      return false; // already occurred.
680  }
681
682  ScratchAlloc SA(*this);
683  EntityInfo RefEntity, ParentEntity;
684  getEntityInfo(D, RefEntity, SA);
685  if (!RefEntity.USR)
686    return false;
687
688  getEntityInfo(Parent, ParentEntity, SA);
689
690  ContainerInfo Container;
691  getContainerInfo(DC, Container);
692
693  CXIdxEntityRefInfo Info = { Kind,
694                              Cursor,
695                              getIndexLoc(Loc),
696                              &RefEntity,
697                              Parent ? &ParentEntity : 0,
698                              &Container };
699  CB.indexEntityReference(ClientData, &Info);
700  return true;
701}
702
703bool IndexingContext::isNotFromSourceFile(SourceLocation Loc) const {
704  if (Loc.isInvalid())
705    return true;
706  SourceManager &SM = Ctx->getSourceManager();
707  SourceLocation FileLoc = SM.getFileLoc(Loc);
708  FileID FID = SM.getFileID(FileLoc);
709  return SM.getFileEntryForID(FID) == 0;
710}
711
712void IndexingContext::addContainerInMap(const DeclContext *DC,
713                                        CXIdxClientContainer container) {
714  if (!DC)
715    return;
716
717  ContainerMapTy::iterator I = ContainerMap.find(DC);
718  if (I == ContainerMap.end()) {
719    if (container)
720      ContainerMap[DC] = container;
721    return;
722  }
723  // Allow changing the container of a previously seen DeclContext so we
724  // can handle invalid user code, like a function re-definition.
725  if (container)
726    I->second = container;
727  else
728    ContainerMap.erase(I);
729}
730
731CXIdxClientEntity IndexingContext::getClientEntity(const Decl *D) const {
732  if (!D)
733    return 0;
734  EntityMapTy::const_iterator I = EntityMap.find(D);
735  if (I == EntityMap.end())
736    return 0;
737  return I->second;
738}
739
740void IndexingContext::setClientEntity(const Decl *D, CXIdxClientEntity client) {
741  if (!D)
742    return;
743  EntityMap[D] = client;
744}
745
746bool IndexingContext::handleCXXRecordDecl(const CXXRecordDecl *RD,
747                                          const NamedDecl *OrigD) {
748  if (RD->isThisDeclarationADefinition()) {
749    ScratchAlloc SA(*this);
750    CXXClassDeclInfo CXXDInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
751                           /*isDefinition=*/RD->isThisDeclarationADefinition());
752    CXXBasesListInfo BaseList(RD, *this, SA);
753    CXXDInfo.CXXClassInfo.declInfo = &CXXDInfo;
754    CXXDInfo.CXXClassInfo.bases = BaseList.getBases();
755    CXXDInfo.CXXClassInfo.numBases = BaseList.getNumBases();
756
757    if (shouldSuppressRefs()) {
758      // Go through bases and mark them as referenced.
759      for (unsigned i = 0, e = BaseList.getNumBases(); i != e; ++i) {
760        const CXIdxBaseClassInfo *baseInfo = BaseList.getBases()[i];
761        if (baseInfo->base) {
762          const NamedDecl *BaseD = BaseList.BaseEntities[i].Dcl;
763          SourceLocation
764            Loc = SourceLocation::getFromRawEncoding(baseInfo->loc.int_data);
765          markEntityOccurrenceInFile(BaseD, Loc);
766        }
767      }
768    }
769
770    return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), CXXDInfo);
771  }
772
773  DeclInfo DInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
774                 /*isDefinition=*/RD->isThisDeclarationADefinition(),
775                 /*isContainer=*/RD->isThisDeclarationADefinition());
776  return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), DInfo);
777}
778
779bool IndexingContext::markEntityOccurrenceInFile(const NamedDecl *D,
780                                                 SourceLocation Loc) {
781  if (!D || Loc.isInvalid())
782    return true;
783
784  SourceManager &SM = Ctx->getSourceManager();
785  D = getEntityDecl(D);
786
787  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SM.getFileLoc(Loc));
788  FileID FID = LocInfo.first;
789  if (FID.isInvalid())
790    return true;
791
792  const FileEntry *FE = SM.getFileEntryForID(FID);
793  if (!FE)
794    return true;
795  RefFileOccurence RefOccur(FE, D);
796  std::pair<llvm::DenseSet<RefFileOccurence>::iterator, bool>
797  res = RefFileOccurences.insert(RefOccur);
798  if (!res.second)
799    return true; // already in map.
800
801  return false;
802}
803
804const NamedDecl *IndexingContext::getEntityDecl(const NamedDecl *D) const {
805  assert(D);
806  D = cast<NamedDecl>(D->getCanonicalDecl());
807
808  if (const ObjCImplementationDecl *
809               ImplD = dyn_cast<ObjCImplementationDecl>(D)) {
810    return getEntityDecl(ImplD->getClassInterface());
811
812  } else if (const ObjCCategoryImplDecl *
813               CatImplD = dyn_cast<ObjCCategoryImplDecl>(D)) {
814    return getEntityDecl(CatImplD->getCategoryDecl());
815  } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
816    if (FunctionTemplateDecl *TemplD = FD->getDescribedFunctionTemplate())
817      return getEntityDecl(TemplD);
818  } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
819    if (ClassTemplateDecl *TemplD = RD->getDescribedClassTemplate())
820      return getEntityDecl(TemplD);
821  }
822
823  return D;
824}
825
826const DeclContext *
827IndexingContext::getEntityContainer(const Decl *D) const {
828  const DeclContext *DC = dyn_cast<DeclContext>(D);
829  if (DC)
830    return DC;
831
832  if (const ClassTemplateDecl *ClassTempl = dyn_cast<ClassTemplateDecl>(D)) {
833    DC = ClassTempl->getTemplatedDecl();
834  } else if (const FunctionTemplateDecl *
835          FuncTempl = dyn_cast<FunctionTemplateDecl>(D)) {
836    DC = FuncTempl->getTemplatedDecl();
837  }
838
839  return DC;
840}
841
842CXIdxClientContainer
843IndexingContext::getClientContainerForDC(const DeclContext *DC) const {
844  if (!DC)
845    return 0;
846
847  ContainerMapTy::const_iterator I = ContainerMap.find(DC);
848  if (I == ContainerMap.end())
849    return 0;
850
851  return I->second;
852}
853
854CXIdxClientFile IndexingContext::getIndexFile(const FileEntry *File) {
855  if (!File)
856    return 0;
857
858  FileMapTy::iterator FI = FileMap.find(File);
859  if (FI != FileMap.end())
860    return FI->second;
861
862  return 0;
863}
864
865CXIdxLoc IndexingContext::getIndexLoc(SourceLocation Loc) const {
866  CXIdxLoc idxLoc =  { {0, 0}, 0 };
867  if (Loc.isInvalid())
868    return idxLoc;
869
870  idxLoc.ptr_data[0] = const_cast<IndexingContext *>(this);
871  idxLoc.int_data = Loc.getRawEncoding();
872  return idxLoc;
873}
874
875void IndexingContext::translateLoc(SourceLocation Loc,
876                                   CXIdxClientFile *indexFile, CXFile *file,
877                                   unsigned *line, unsigned *column,
878                                   unsigned *offset) {
879  if (Loc.isInvalid())
880    return;
881
882  SourceManager &SM = Ctx->getSourceManager();
883  Loc = SM.getFileLoc(Loc);
884
885  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
886  FileID FID = LocInfo.first;
887  unsigned FileOffset = LocInfo.second;
888
889  if (FID.isInvalid())
890    return;
891
892  const FileEntry *FE = SM.getFileEntryForID(FID);
893  if (indexFile)
894    *indexFile = getIndexFile(FE);
895  if (file)
896    *file = const_cast<FileEntry *>(FE);
897  if (line)
898    *line = SM.getLineNumber(FID, FileOffset);
899  if (column)
900    *column = SM.getColumnNumber(FID, FileOffset);
901  if (offset)
902    *offset = FileOffset;
903}
904
905void IndexingContext::getEntityInfo(const NamedDecl *D,
906                                    EntityInfo &EntityInfo,
907                                    ScratchAlloc &SA) {
908  if (!D)
909    return;
910
911  D = getEntityDecl(D);
912  EntityInfo.cursor = getCursor(D);
913  EntityInfo.Dcl = D;
914  EntityInfo.IndexCtx = this;
915  EntityInfo.kind = CXIdxEntity_Unexposed;
916  EntityInfo.templateKind = CXIdxEntity_NonTemplate;
917  EntityInfo.lang = CXIdxEntityLang_C;
918
919  if (D->hasAttrs()) {
920    EntityInfo.AttrList = AttrListInfo::create(D, *this);
921    EntityInfo.attributes = EntityInfo.AttrList->getAttrs();
922    EntityInfo.numAttributes = EntityInfo.AttrList->getNumAttrs();
923  }
924
925  if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
926    switch (TD->getTagKind()) {
927    case TTK_Struct:
928      EntityInfo.kind = CXIdxEntity_Struct; break;
929    case TTK_Union:
930      EntityInfo.kind = CXIdxEntity_Union; break;
931    case TTK_Class:
932      EntityInfo.kind = CXIdxEntity_CXXClass;
933      EntityInfo.lang = CXIdxEntityLang_CXX;
934      break;
935    case TTK_Interface:
936      EntityInfo.kind = CXIdxEntity_CXXInterface;
937      EntityInfo.lang = CXIdxEntityLang_CXX;
938      break;
939    case TTK_Enum:
940      EntityInfo.kind = CXIdxEntity_Enum; break;
941    }
942
943    if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D))
944      if (!CXXRec->isCLike())
945        EntityInfo.lang = CXIdxEntityLang_CXX;
946
947    if (isa<ClassTemplatePartialSpecializationDecl>(D)) {
948      EntityInfo.templateKind = CXIdxEntity_TemplatePartialSpecialization;
949    } else if (isa<ClassTemplateSpecializationDecl>(D)) {
950      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
951    }
952
953  } else {
954    switch (D->getKind()) {
955    case Decl::Typedef:
956      EntityInfo.kind = CXIdxEntity_Typedef; break;
957    case Decl::Function:
958      EntityInfo.kind = CXIdxEntity_Function;
959      break;
960    case Decl::ParmVar:
961      EntityInfo.kind = CXIdxEntity_Variable;
962      break;
963    case Decl::Var:
964      EntityInfo.kind = CXIdxEntity_Variable;
965      if (isa<CXXRecordDecl>(D->getDeclContext())) {
966        EntityInfo.kind = CXIdxEntity_CXXStaticVariable;
967        EntityInfo.lang = CXIdxEntityLang_CXX;
968      }
969      break;
970    case Decl::Field:
971      EntityInfo.kind = CXIdxEntity_Field;
972      if (const CXXRecordDecl *
973            CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {
974        // FIXME: isPOD check is not sufficient, a POD can contain methods,
975        // we want a isCStructLike check.
976        if (!CXXRec->isPOD())
977          EntityInfo.lang = CXIdxEntityLang_CXX;
978      }
979      break;
980    case Decl::EnumConstant:
981      EntityInfo.kind = CXIdxEntity_EnumConstant; break;
982    case Decl::ObjCInterface:
983      EntityInfo.kind = CXIdxEntity_ObjCClass;
984      EntityInfo.lang = CXIdxEntityLang_ObjC;
985      break;
986    case Decl::ObjCProtocol:
987      EntityInfo.kind = CXIdxEntity_ObjCProtocol;
988      EntityInfo.lang = CXIdxEntityLang_ObjC;
989      break;
990    case Decl::ObjCCategory:
991      EntityInfo.kind = CXIdxEntity_ObjCCategory;
992      EntityInfo.lang = CXIdxEntityLang_ObjC;
993      break;
994    case Decl::ObjCMethod:
995      if (cast<ObjCMethodDecl>(D)->isInstanceMethod())
996        EntityInfo.kind = CXIdxEntity_ObjCInstanceMethod;
997      else
998        EntityInfo.kind = CXIdxEntity_ObjCClassMethod;
999      EntityInfo.lang = CXIdxEntityLang_ObjC;
1000      break;
1001    case Decl::ObjCProperty:
1002      EntityInfo.kind = CXIdxEntity_ObjCProperty;
1003      EntityInfo.lang = CXIdxEntityLang_ObjC;
1004      break;
1005    case Decl::ObjCIvar:
1006      EntityInfo.kind = CXIdxEntity_ObjCIvar;
1007      EntityInfo.lang = CXIdxEntityLang_ObjC;
1008      break;
1009    case Decl::Namespace:
1010      EntityInfo.kind = CXIdxEntity_CXXNamespace;
1011      EntityInfo.lang = CXIdxEntityLang_CXX;
1012      break;
1013    case Decl::NamespaceAlias:
1014      EntityInfo.kind = CXIdxEntity_CXXNamespaceAlias;
1015      EntityInfo.lang = CXIdxEntityLang_CXX;
1016      break;
1017    case Decl::CXXConstructor:
1018      EntityInfo.kind = CXIdxEntity_CXXConstructor;
1019      EntityInfo.lang = CXIdxEntityLang_CXX;
1020      break;
1021    case Decl::CXXDestructor:
1022      EntityInfo.kind = CXIdxEntity_CXXDestructor;
1023      EntityInfo.lang = CXIdxEntityLang_CXX;
1024      break;
1025    case Decl::CXXConversion:
1026      EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1027      EntityInfo.lang = CXIdxEntityLang_CXX;
1028      break;
1029    case Decl::CXXMethod: {
1030      const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
1031      if (MD->isStatic())
1032        EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1033      else
1034        EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1035      EntityInfo.lang = CXIdxEntityLang_CXX;
1036      break;
1037    }
1038    case Decl::ClassTemplate:
1039      EntityInfo.kind = CXIdxEntity_CXXClass;
1040      EntityInfo.templateKind = CXIdxEntity_Template;
1041      break;
1042    case Decl::FunctionTemplate:
1043      EntityInfo.kind = CXIdxEntity_Function;
1044      EntityInfo.templateKind = CXIdxEntity_Template;
1045      if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(
1046                           cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {
1047        if (isa<CXXConstructorDecl>(MD))
1048          EntityInfo.kind = CXIdxEntity_CXXConstructor;
1049        else if (isa<CXXDestructorDecl>(MD))
1050          EntityInfo.kind = CXIdxEntity_CXXDestructor;
1051        else if (isa<CXXConversionDecl>(MD))
1052          EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1053        else {
1054          if (MD->isStatic())
1055            EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1056          else
1057            EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1058        }
1059      }
1060      break;
1061    case Decl::TypeAliasTemplate:
1062      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1063      EntityInfo.templateKind = CXIdxEntity_Template;
1064      break;
1065    case Decl::TypeAlias:
1066      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1067      EntityInfo.lang = CXIdxEntityLang_CXX;
1068      break;
1069    default:
1070      break;
1071    }
1072  }
1073
1074  if (EntityInfo.kind == CXIdxEntity_Unexposed)
1075    return;
1076
1077  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1078    if (FD->getTemplatedKind() ==
1079          FunctionDecl::TK_FunctionTemplateSpecialization)
1080      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
1081  }
1082
1083  if (EntityInfo.templateKind != CXIdxEntity_NonTemplate)
1084    EntityInfo.lang = CXIdxEntityLang_CXX;
1085
1086  if (IdentifierInfo *II = D->getIdentifier()) {
1087    EntityInfo.name = SA.toCStr(II->getName());
1088
1089  } else if (isa<TagDecl>(D) || isa<FieldDecl>(D) || isa<NamespaceDecl>(D)) {
1090    EntityInfo.name = 0; // anonymous tag/field/namespace.
1091
1092  } else {
1093    SmallString<256> StrBuf;
1094    {
1095      llvm::raw_svector_ostream OS(StrBuf);
1096      D->printName(OS);
1097    }
1098    EntityInfo.name = SA.copyCStr(StrBuf.str());
1099  }
1100
1101  {
1102    SmallString<512> StrBuf;
1103    bool Ignore = getDeclCursorUSR(D, StrBuf);
1104    if (Ignore) {
1105      EntityInfo.USR = 0;
1106    } else {
1107      EntityInfo.USR = SA.copyCStr(StrBuf.str());
1108    }
1109  }
1110}
1111
1112void IndexingContext::getContainerInfo(const DeclContext *DC,
1113                                       ContainerInfo &ContInfo) {
1114  ContInfo.cursor = getCursor(cast<Decl>(DC));
1115  ContInfo.DC = DC;
1116  ContInfo.IndexCtx = this;
1117}
1118
1119CXCursor IndexingContext::getRefCursor(const NamedDecl *D, SourceLocation Loc) {
1120  if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
1121    return MakeCursorTypeRef(TD, Loc, CXTU);
1122  if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
1123    return MakeCursorObjCClassRef(ID, Loc, CXTU);
1124  if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
1125    return MakeCursorObjCProtocolRef(PD, Loc, CXTU);
1126  if (const TemplateDecl *Template = dyn_cast<TemplateDecl>(D))
1127    return MakeCursorTemplateRef(Template, Loc, CXTU);
1128  if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(D))
1129    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1130  if (const NamespaceAliasDecl *Namespace = dyn_cast<NamespaceAliasDecl>(D))
1131    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1132  if (const FieldDecl *Field = dyn_cast<FieldDecl>(D))
1133    return MakeCursorMemberRef(Field, Loc, CXTU);
1134  if (const VarDecl *Var = dyn_cast<VarDecl>(D))
1135    return MakeCursorVariableRef(Var, Loc, CXTU);
1136
1137  return clang_getNullCursor();
1138}
1139
1140bool IndexingContext::shouldIgnoreIfImplicit(const Decl *D) {
1141  if (isa<ObjCInterfaceDecl>(D))
1142    return false;
1143  if (isa<ObjCCategoryDecl>(D))
1144    return false;
1145  if (isa<ObjCIvarDecl>(D))
1146    return false;
1147  if (isa<ObjCMethodDecl>(D))
1148    return false;
1149  if (isa<ImportDecl>(D))
1150    return false;
1151  return true;
1152}
1153
1154bool IndexingContext::isTemplateImplicitInstantiation(const Decl *D) {
1155  if (const ClassTemplateSpecializationDecl *
1156        SD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1157    return SD->getSpecializationKind() == TSK_ImplicitInstantiation;
1158  }
1159  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1160    return FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation;
1161  }
1162  return false;
1163}
1164