IndexingContext.cpp revision 651f13cea278ec967336033dd032faef0e9fc2ec 
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/Attr.h"
14#include "clang/AST/DeclCXX.h"
15#include "clang/AST/DeclTemplate.h"
16#include "clang/Frontend/ASTUnit.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 (const auto *A : D->attrs()) {
71    CXCursor C = MakeCXCursor(A, D, IdxCtx.CXTU);
72    CXIdxLoc Loc =  IdxCtx.getIndexLoc(A->getLocation());
73    switch (C.kind) {
74    default:
75      Attrs.push_back(AttrInfo(CXIdxAttr_Unexposed, C, Loc, A));
76      break;
77    case CXCursor_IBActionAttr:
78      Attrs.push_back(AttrInfo(CXIdxAttr_IBAction, C, Loc, A));
79      break;
80    case CXCursor_IBOutletAttr:
81      Attrs.push_back(AttrInfo(CXIdxAttr_IBOutlet, C, Loc, A));
82      break;
83    case CXCursor_IBOutletCollectionAttr:
84      IBCollAttrs.push_back(IBOutletCollectionInfo(C, Loc, A));
85      break;
86    }
87  }
88
89  for (unsigned i = 0, e = IBCollAttrs.size(); i != e; ++i) {
90    IBOutletCollectionInfo &IBInfo = IBCollAttrs[i];
91    CXAttrs.push_back(&IBInfo);
92
93    const IBOutletCollectionAttr *
94      IBAttr = cast<IBOutletCollectionAttr>(IBInfo.A);
95    SourceLocation InterfaceLocStart =
96        IBAttr->getInterfaceLoc()->getTypeLoc().getLocStart();
97    IBInfo.IBCollInfo.attrInfo = &IBInfo;
98    IBInfo.IBCollInfo.classLoc = IdxCtx.getIndexLoc(InterfaceLocStart);
99    IBInfo.IBCollInfo.objcClass = 0;
100    IBInfo.IBCollInfo.classCursor = clang_getNullCursor();
101    QualType Ty = IBAttr->getInterface();
102    if (const ObjCObjectType *ObjectTy = Ty->getAs<ObjCObjectType>()) {
103      if (const ObjCInterfaceDecl *InterD = ObjectTy->getInterface()) {
104        IdxCtx.getEntityInfo(InterD, IBInfo.ClassInfo, SA);
105        IBInfo.IBCollInfo.objcClass = &IBInfo.ClassInfo;
106        IBInfo.IBCollInfo.classCursor =
107            MakeCursorObjCClassRef(InterD, InterfaceLocStart, 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 (const auto &Base : D->bases()) {
127    BaseEntities.push_back(EntityInfo());
128    const NamedDecl *BaseD = 0;
129    QualType T = Base.getType();
130    SourceLocation Loc = getBaseLoc(Base);
131
132    if (const TypedefType *TDT = T->getAs<TypedefType>()) {
133      BaseD = TDT->getDecl();
134    } else if (const TemplateSpecializationType *
135          TST = T->getAs<TemplateSpecializationType>()) {
136      BaseD = TST->getTemplateName().getAsTemplateDecl();
137    } else if (const RecordType *RT = T->getAs<RecordType>()) {
138      BaseD = RT->getDecl();
139    }
140
141    if (BaseD)
142      IdxCtx.getEntityInfo(BaseD, BaseEntities.back(), SA);
143    CXIdxBaseClassInfo BaseInfo = { 0,
144                         MakeCursorCXXBaseSpecifier(&Base, IdxCtx.CXTU),
145                         IdxCtx.getIndexLoc(Loc) };
146    BaseInfos.push_back(BaseInfo);
147  }
148
149  for (unsigned i = 0, e = BaseInfos.size(); i != e; ++i) {
150    if (BaseEntities[i].name && BaseEntities[i].USR)
151      BaseInfos[i].base = &BaseEntities[i];
152  }
153
154  for (unsigned i = 0, e = BaseInfos.size(); i != e; ++i)
155    CXBases.push_back(&BaseInfos[i]);
156}
157
158SourceLocation IndexingContext::CXXBasesListInfo::getBaseLoc(
159                                           const CXXBaseSpecifier &Base) const {
160  SourceLocation Loc = Base.getSourceRange().getBegin();
161  TypeLoc TL;
162  if (Base.getTypeSourceInfo())
163    TL = Base.getTypeSourceInfo()->getTypeLoc();
164  if (TL.isNull())
165    return Loc;
166
167  if (QualifiedTypeLoc QL = TL.getAs<QualifiedTypeLoc>())
168    TL = QL.getUnqualifiedLoc();
169
170  if (ElaboratedTypeLoc EL = TL.getAs<ElaboratedTypeLoc>())
171    return EL.getNamedTypeLoc().getBeginLoc();
172  if (DependentNameTypeLoc DL = TL.getAs<DependentNameTypeLoc>())
173    return DL.getNameLoc();
174  if (DependentTemplateSpecializationTypeLoc DTL =
175          TL.getAs<DependentTemplateSpecializationTypeLoc>())
176    return DTL.getTemplateNameLoc();
177
178  return Loc;
179}
180
181const char *ScratchAlloc::toCStr(StringRef Str) {
182  if (Str.empty())
183    return "";
184  if (Str.data()[Str.size()] == '\0')
185    return Str.data();
186  return copyCStr(Str);
187}
188
189const char *ScratchAlloc::copyCStr(StringRef Str) {
190  char *buf = IdxCtx.StrScratch.Allocate<char>(Str.size() + 1);
191  std::uninitialized_copy(Str.begin(), Str.end(), buf);
192  buf[Str.size()] = '\0';
193  return buf;
194}
195
196void IndexingContext::setASTContext(ASTContext &ctx) {
197  Ctx = &ctx;
198  cxtu::getASTUnit(CXTU)->setASTContext(&ctx);
199}
200
201void IndexingContext::setPreprocessor(Preprocessor &PP) {
202  cxtu::getASTUnit(CXTU)->setPreprocessor(&PP);
203}
204
205bool IndexingContext::isFunctionLocalDecl(const Decl *D) {
206  assert(D);
207
208  if (!D->getParentFunctionOrMethod())
209    return false;
210
211  if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) {
212    switch (ND->getFormalLinkage()) {
213    case NoLinkage:
214    case VisibleNoLinkage:
215    case InternalLinkage:
216      return true;
217    case UniqueExternalLinkage:
218      llvm_unreachable("Not a sema linkage");
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 =
236      CB.enteredMainFile(ClientData,
237                         static_cast<CXFile>(const_cast<FileEntry *>(File)), 0);
238    FileMap[File] = idxFile;
239  }
240}
241
242void IndexingContext::ppIncludedFile(SourceLocation hashLoc,
243                                     StringRef filename,
244                                     const FileEntry *File,
245                                     bool isImport, bool isAngled,
246                                     bool isModuleImport) {
247  if (!CB.ppIncludedFile)
248    return;
249
250  ScratchAlloc SA(*this);
251  CXIdxIncludedFileInfo Info = { getIndexLoc(hashLoc),
252                                 SA.toCStr(filename),
253                                 static_cast<CXFile>(
254                                   const_cast<FileEntry *>(File)),
255                                 isImport, isAngled, isModuleImport };
256  CXIdxClientFile idxFile = CB.ppIncludedFile(ClientData, &Info);
257  FileMap[File] = idxFile;
258}
259
260void IndexingContext::importedModule(const ImportDecl *ImportD) {
261  if (!CB.importedASTFile)
262    return;
263
264  Module *Mod = ImportD->getImportedModule();
265  if (!Mod)
266    return;
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->isFirstDecl(), 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->isFirstDecl(), 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::handleMSProperty(const MSPropertyDecl *D) {
400  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
401                 /*isContainer=*/false);
402  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
403}
404
405bool IndexingContext::handleEnumerator(const EnumConstantDecl *D) {
406  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
407                 /*isContainer=*/false);
408  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
409}
410
411bool IndexingContext::handleTagDecl(const TagDecl *D) {
412  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(D))
413    return handleCXXRecordDecl(CXXRD, D);
414
415  DeclInfo DInfo(!D->isFirstDecl(), D->isThisDeclarationADefinition(),
416                 D->isThisDeclarationADefinition());
417  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
418}
419
420bool IndexingContext::handleTypedefName(const TypedefNameDecl *D) {
421  DeclInfo DInfo(!D->isFirstDecl(), /*isDefinition=*/true,
422                 /*isContainer=*/false);
423  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
424}
425
426bool IndexingContext::handleObjCInterface(const ObjCInterfaceDecl *D) {
427  // For @class forward declarations, suppress them the same way as references.
428  if (!D->isThisDeclarationADefinition()) {
429    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
430      return false; // already occurred.
431
432    // FIXME: This seems like the wrong definition for redeclaration.
433    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
434    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true, isRedeclaration,
435                                    /*isImplementation=*/false);
436    return handleObjCContainer(D, D->getLocation(),
437                               MakeCursorObjCClassRef(D, D->getLocation(),
438                                                      CXTU),
439                               ContDInfo);
440  }
441
442  ScratchAlloc SA(*this);
443
444  CXIdxBaseClassInfo BaseClass;
445  EntityInfo BaseEntity;
446  BaseClass.cursor = clang_getNullCursor();
447  if (ObjCInterfaceDecl *SuperD = D->getSuperClass()) {
448    getEntityInfo(SuperD, BaseEntity, SA);
449    SourceLocation SuperLoc = D->getSuperClassLoc();
450    BaseClass.base = &BaseEntity;
451    BaseClass.cursor = MakeCursorObjCSuperClassRef(SuperD, SuperLoc, CXTU);
452    BaseClass.loc = getIndexLoc(SuperLoc);
453
454    if (shouldSuppressRefs())
455      markEntityOccurrenceInFile(SuperD, SuperLoc);
456  }
457
458  ObjCProtocolList EmptyProtoList;
459  ObjCProtocolListInfo ProtInfo(D->isThisDeclarationADefinition()
460                                  ? D->getReferencedProtocols()
461                                  : EmptyProtoList,
462                                *this, SA);
463
464  ObjCInterfaceDeclInfo InterInfo(D);
465  InterInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
466  InterInfo.ObjCInterDeclInfo.containerInfo = &InterInfo.ObjCContDeclInfo;
467  InterInfo.ObjCInterDeclInfo.superInfo = D->getSuperClass() ? &BaseClass : 0;
468  InterInfo.ObjCInterDeclInfo.protocols = &InterInfo.ObjCProtoListInfo;
469
470  return handleObjCContainer(D, D->getLocation(), getCursor(D), InterInfo);
471}
472
473bool IndexingContext::handleObjCImplementation(
474                                              const ObjCImplementationDecl *D) {
475  ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/false,
476                      /*isRedeclaration=*/true,
477                      /*isImplementation=*/true);
478  return handleObjCContainer(D, D->getLocation(), getCursor(D), ContDInfo);
479}
480
481bool IndexingContext::handleObjCProtocol(const ObjCProtocolDecl *D) {
482  if (!D->isThisDeclarationADefinition()) {
483    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
484      return false; // already occurred.
485
486    // FIXME: This seems like the wrong definition for redeclaration.
487    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
488    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true,
489                                    isRedeclaration,
490                                    /*isImplementation=*/false);
491    return handleObjCContainer(D, D->getLocation(),
492                               MakeCursorObjCProtocolRef(D, D->getLocation(),
493                                                         CXTU),
494                               ContDInfo);
495  }
496
497  ScratchAlloc SA(*this);
498  ObjCProtocolList EmptyProtoList;
499  ObjCProtocolListInfo ProtListInfo(D->isThisDeclarationADefinition()
500                                      ? D->getReferencedProtocols()
501                                      : EmptyProtoList,
502                                    *this, SA);
503
504  ObjCProtocolDeclInfo ProtInfo(D);
505  ProtInfo.ObjCProtoRefListInfo = ProtListInfo.getListInfo();
506
507  return handleObjCContainer(D, D->getLocation(), getCursor(D), ProtInfo);
508}
509
510bool IndexingContext::handleObjCCategory(const ObjCCategoryDecl *D) {
511  ScratchAlloc SA(*this);
512
513  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/false);
514  EntityInfo ClassEntity;
515  const ObjCInterfaceDecl *IFaceD = D->getClassInterface();
516  SourceLocation ClassLoc = D->getLocation();
517  SourceLocation CategoryLoc = D->IsClassExtension() ? ClassLoc
518                                                     : D->getCategoryNameLoc();
519  getEntityInfo(IFaceD, ClassEntity, SA);
520
521  if (shouldSuppressRefs())
522    markEntityOccurrenceInFile(IFaceD, ClassLoc);
523
524  ObjCProtocolListInfo ProtInfo(D->getReferencedProtocols(), *this, SA);
525
526  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
527  if (IFaceD) {
528    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
529    CatDInfo.ObjCCatDeclInfo.classCursor =
530        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
531  } else {
532    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
533    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
534  }
535  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
536  CatDInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
537  CatDInfo.ObjCCatDeclInfo.protocols = &CatDInfo.ObjCProtoListInfo;
538
539  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
540}
541
542bool IndexingContext::handleObjCCategoryImpl(const ObjCCategoryImplDecl *D) {
543  ScratchAlloc SA(*this);
544
545  const ObjCCategoryDecl *CatD = D->getCategoryDecl();
546  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/true);
547  EntityInfo ClassEntity;
548  const ObjCInterfaceDecl *IFaceD = CatD->getClassInterface();
549  SourceLocation ClassLoc = D->getLocation();
550  SourceLocation CategoryLoc = D->getCategoryNameLoc();
551  getEntityInfo(IFaceD, ClassEntity, SA);
552
553  if (shouldSuppressRefs())
554    markEntityOccurrenceInFile(IFaceD, ClassLoc);
555
556  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
557  if (IFaceD) {
558    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
559    CatDInfo.ObjCCatDeclInfo.classCursor =
560        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
561  } else {
562    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
563    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
564  }
565  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
566  CatDInfo.ObjCCatDeclInfo.protocols = 0;
567
568  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
569}
570
571bool IndexingContext::handleObjCMethod(const ObjCMethodDecl *D) {
572  bool isDef = D->isThisDeclarationADefinition();
573  bool isContainer = isDef;
574  bool isSkipped = false;
575  if (D->hasSkippedBody()) {
576    isSkipped = true;
577    isDef = true;
578    isContainer = false;
579  }
580
581  DeclInfo DInfo(!D->isCanonicalDecl(), isDef, isContainer);
582  if (isSkipped)
583    DInfo.flags |= CXIdxDeclFlag_Skipped;
584  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
585}
586
587bool IndexingContext::handleSynthesizedObjCProperty(
588                                                const ObjCPropertyImplDecl *D) {
589  ObjCPropertyDecl *PD = D->getPropertyDecl();
590  return handleReference(PD, D->getLocation(), getCursor(D), 0, D->getDeclContext());
591}
592
593bool IndexingContext::handleSynthesizedObjCMethod(const ObjCMethodDecl *D,
594                                                  SourceLocation Loc,
595                                                 const DeclContext *LexicalDC) {
596  DeclInfo DInfo(/*isRedeclaration=*/true, /*isDefinition=*/true,
597                 /*isContainer=*/false);
598  return handleDecl(D, Loc, getCursor(D), DInfo, LexicalDC);
599}
600
601bool IndexingContext::handleObjCProperty(const ObjCPropertyDecl *D) {
602  ScratchAlloc SA(*this);
603
604  ObjCPropertyDeclInfo DInfo;
605  EntityInfo GetterEntity;
606  EntityInfo SetterEntity;
607
608  DInfo.ObjCPropDeclInfo.declInfo = &DInfo;
609
610  if (ObjCMethodDecl *Getter = D->getGetterMethodDecl()) {
611    getEntityInfo(Getter, GetterEntity, SA);
612    DInfo.ObjCPropDeclInfo.getter = &GetterEntity;
613  } else {
614    DInfo.ObjCPropDeclInfo.getter = 0;
615  }
616  if (ObjCMethodDecl *Setter = D->getSetterMethodDecl()) {
617    getEntityInfo(Setter, SetterEntity, SA);
618    DInfo.ObjCPropDeclInfo.setter = &SetterEntity;
619  } else {
620    DInfo.ObjCPropDeclInfo.setter = 0;
621  }
622
623  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
624}
625
626bool IndexingContext::handleNamespace(const NamespaceDecl *D) {
627  DeclInfo DInfo(/*isRedeclaration=*/!D->isOriginalNamespace(),
628                 /*isDefinition=*/true,
629                 /*isContainer=*/true);
630  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
631}
632
633bool IndexingContext::handleClassTemplate(const ClassTemplateDecl *D) {
634  return handleCXXRecordDecl(D->getTemplatedDecl(), D);
635}
636
637bool IndexingContext::handleFunctionTemplate(const FunctionTemplateDecl *D) {
638  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
639                 /*isDefinition=*/D->isThisDeclarationADefinition(),
640                 /*isContainer=*/D->isThisDeclarationADefinition());
641  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
642}
643
644bool IndexingContext::handleTypeAliasTemplate(const TypeAliasTemplateDecl *D) {
645  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
646                 /*isDefinition=*/true, /*isContainer=*/false);
647  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
648}
649
650bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
651                                      const NamedDecl *Parent,
652                                      const DeclContext *DC,
653                                      const Expr *E,
654                                      CXIdxEntityRefKind Kind) {
655  if (!D)
656    return false;
657
658  CXCursor Cursor = E ? MakeCXCursor(E, cast<Decl>(DC), CXTU)
659                      : getRefCursor(D, Loc);
660  return handleReference(D, Loc, Cursor, Parent, DC, E, Kind);
661}
662
663bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
664                                      CXCursor Cursor,
665                                      const NamedDecl *Parent,
666                                      const DeclContext *DC,
667                                      const Expr *E,
668                                      CXIdxEntityRefKind Kind) {
669  if (!CB.indexEntityReference)
670    return false;
671
672  if (!D)
673    return false;
674  if (Loc.isInvalid())
675    return false;
676  if (!shouldIndexFunctionLocalSymbols() && isFunctionLocalDecl(D))
677    return false;
678  if (isNotFromSourceFile(D->getLocation()))
679    return false;
680  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
681    return false;
682
683  if (shouldSuppressRefs()) {
684    if (markEntityOccurrenceInFile(D, Loc))
685      return false; // already occurred.
686  }
687
688  ScratchAlloc SA(*this);
689  EntityInfo RefEntity, ParentEntity;
690  getEntityInfo(D, RefEntity, SA);
691  if (!RefEntity.USR)
692    return false;
693
694  getEntityInfo(Parent, ParentEntity, SA);
695
696  ContainerInfo Container;
697  getContainerInfo(DC, Container);
698
699  CXIdxEntityRefInfo Info = { Kind,
700                              Cursor,
701                              getIndexLoc(Loc),
702                              &RefEntity,
703                              Parent ? &ParentEntity : 0,
704                              &Container };
705  CB.indexEntityReference(ClientData, &Info);
706  return true;
707}
708
709bool IndexingContext::isNotFromSourceFile(SourceLocation Loc) const {
710  if (Loc.isInvalid())
711    return true;
712  SourceManager &SM = Ctx->getSourceManager();
713  SourceLocation FileLoc = SM.getFileLoc(Loc);
714  FileID FID = SM.getFileID(FileLoc);
715  return SM.getFileEntryForID(FID) == 0;
716}
717
718void IndexingContext::addContainerInMap(const DeclContext *DC,
719                                        CXIdxClientContainer container) {
720  if (!DC)
721    return;
722
723  ContainerMapTy::iterator I = ContainerMap.find(DC);
724  if (I == ContainerMap.end()) {
725    if (container)
726      ContainerMap[DC] = container;
727    return;
728  }
729  // Allow changing the container of a previously seen DeclContext so we
730  // can handle invalid user code, like a function re-definition.
731  if (container)
732    I->second = container;
733  else
734    ContainerMap.erase(I);
735}
736
737CXIdxClientEntity IndexingContext::getClientEntity(const Decl *D) const {
738  if (!D)
739    return 0;
740  EntityMapTy::const_iterator I = EntityMap.find(D);
741  if (I == EntityMap.end())
742    return 0;
743  return I->second;
744}
745
746void IndexingContext::setClientEntity(const Decl *D, CXIdxClientEntity client) {
747  if (!D)
748    return;
749  EntityMap[D] = client;
750}
751
752bool IndexingContext::handleCXXRecordDecl(const CXXRecordDecl *RD,
753                                          const NamedDecl *OrigD) {
754  if (RD->isThisDeclarationADefinition()) {
755    ScratchAlloc SA(*this);
756    CXXClassDeclInfo CXXDInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
757                           /*isDefinition=*/RD->isThisDeclarationADefinition());
758    CXXBasesListInfo BaseList(RD, *this, SA);
759    CXXDInfo.CXXClassInfo.declInfo = &CXXDInfo;
760    CXXDInfo.CXXClassInfo.bases = BaseList.getBases();
761    CXXDInfo.CXXClassInfo.numBases = BaseList.getNumBases();
762
763    if (shouldSuppressRefs()) {
764      // Go through bases and mark them as referenced.
765      for (unsigned i = 0, e = BaseList.getNumBases(); i != e; ++i) {
766        const CXIdxBaseClassInfo *baseInfo = BaseList.getBases()[i];
767        if (baseInfo->base) {
768          const NamedDecl *BaseD = BaseList.BaseEntities[i].Dcl;
769          SourceLocation
770            Loc = SourceLocation::getFromRawEncoding(baseInfo->loc.int_data);
771          markEntityOccurrenceInFile(BaseD, Loc);
772        }
773      }
774    }
775
776    return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), CXXDInfo);
777  }
778
779  DeclInfo DInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
780                 /*isDefinition=*/RD->isThisDeclarationADefinition(),
781                 /*isContainer=*/RD->isThisDeclarationADefinition());
782  return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), DInfo);
783}
784
785bool IndexingContext::markEntityOccurrenceInFile(const NamedDecl *D,
786                                                 SourceLocation Loc) {
787  if (!D || Loc.isInvalid())
788    return true;
789
790  SourceManager &SM = Ctx->getSourceManager();
791  D = getEntityDecl(D);
792
793  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SM.getFileLoc(Loc));
794  FileID FID = LocInfo.first;
795  if (FID.isInvalid())
796    return true;
797
798  const FileEntry *FE = SM.getFileEntryForID(FID);
799  if (!FE)
800    return true;
801  RefFileOccurrence RefOccur(FE, D);
802  std::pair<llvm::DenseSet<RefFileOccurrence>::iterator, bool>
803  res = RefFileOccurrences.insert(RefOccur);
804  if (!res.second)
805    return true; // already in map.
806
807  return false;
808}
809
810const NamedDecl *IndexingContext::getEntityDecl(const NamedDecl *D) const {
811  assert(D);
812  D = cast<NamedDecl>(D->getCanonicalDecl());
813
814  if (const ObjCImplementationDecl *
815               ImplD = dyn_cast<ObjCImplementationDecl>(D)) {
816    return getEntityDecl(ImplD->getClassInterface());
817
818  } else if (const ObjCCategoryImplDecl *
819               CatImplD = dyn_cast<ObjCCategoryImplDecl>(D)) {
820    return getEntityDecl(CatImplD->getCategoryDecl());
821  } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
822    if (FunctionTemplateDecl *TemplD = FD->getDescribedFunctionTemplate())
823      return getEntityDecl(TemplD);
824  } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
825    if (ClassTemplateDecl *TemplD = RD->getDescribedClassTemplate())
826      return getEntityDecl(TemplD);
827  }
828
829  return D;
830}
831
832const DeclContext *
833IndexingContext::getEntityContainer(const Decl *D) const {
834  const DeclContext *DC = dyn_cast<DeclContext>(D);
835  if (DC)
836    return DC;
837
838  if (const ClassTemplateDecl *ClassTempl = dyn_cast<ClassTemplateDecl>(D)) {
839    DC = ClassTempl->getTemplatedDecl();
840  } else if (const FunctionTemplateDecl *
841          FuncTempl = dyn_cast<FunctionTemplateDecl>(D)) {
842    DC = FuncTempl->getTemplatedDecl();
843  }
844
845  return DC;
846}
847
848CXIdxClientContainer
849IndexingContext::getClientContainerForDC(const DeclContext *DC) const {
850  if (!DC)
851    return 0;
852
853  ContainerMapTy::const_iterator I = ContainerMap.find(DC);
854  if (I == ContainerMap.end())
855    return 0;
856
857  return I->second;
858}
859
860CXIdxClientFile IndexingContext::getIndexFile(const FileEntry *File) {
861  if (!File)
862    return 0;
863
864  FileMapTy::iterator FI = FileMap.find(File);
865  if (FI != FileMap.end())
866    return FI->second;
867
868  return 0;
869}
870
871CXIdxLoc IndexingContext::getIndexLoc(SourceLocation Loc) const {
872  CXIdxLoc idxLoc =  { {0, 0}, 0 };
873  if (Loc.isInvalid())
874    return idxLoc;
875
876  idxLoc.ptr_data[0] = const_cast<IndexingContext *>(this);
877  idxLoc.int_data = Loc.getRawEncoding();
878  return idxLoc;
879}
880
881void IndexingContext::translateLoc(SourceLocation Loc,
882                                   CXIdxClientFile *indexFile, CXFile *file,
883                                   unsigned *line, unsigned *column,
884                                   unsigned *offset) {
885  if (Loc.isInvalid())
886    return;
887
888  SourceManager &SM = Ctx->getSourceManager();
889  Loc = SM.getFileLoc(Loc);
890
891  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
892  FileID FID = LocInfo.first;
893  unsigned FileOffset = LocInfo.second;
894
895  if (FID.isInvalid())
896    return;
897
898  const FileEntry *FE = SM.getFileEntryForID(FID);
899  if (indexFile)
900    *indexFile = getIndexFile(FE);
901  if (file)
902    *file = const_cast<FileEntry *>(FE);
903  if (line)
904    *line = SM.getLineNumber(FID, FileOffset);
905  if (column)
906    *column = SM.getColumnNumber(FID, FileOffset);
907  if (offset)
908    *offset = FileOffset;
909}
910
911void IndexingContext::getEntityInfo(const NamedDecl *D,
912                                    EntityInfo &EntityInfo,
913                                    ScratchAlloc &SA) {
914  if (!D)
915    return;
916
917  D = getEntityDecl(D);
918  EntityInfo.cursor = getCursor(D);
919  EntityInfo.Dcl = D;
920  EntityInfo.IndexCtx = this;
921  EntityInfo.kind = CXIdxEntity_Unexposed;
922  EntityInfo.templateKind = CXIdxEntity_NonTemplate;
923  EntityInfo.lang = CXIdxEntityLang_C;
924
925  if (D->hasAttrs()) {
926    EntityInfo.AttrList = AttrListInfo::create(D, *this);
927    EntityInfo.attributes = EntityInfo.AttrList->getAttrs();
928    EntityInfo.numAttributes = EntityInfo.AttrList->getNumAttrs();
929  }
930
931  if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
932    switch (TD->getTagKind()) {
933    case TTK_Struct:
934      EntityInfo.kind = CXIdxEntity_Struct; break;
935    case TTK_Union:
936      EntityInfo.kind = CXIdxEntity_Union; break;
937    case TTK_Class:
938      EntityInfo.kind = CXIdxEntity_CXXClass;
939      EntityInfo.lang = CXIdxEntityLang_CXX;
940      break;
941    case TTK_Interface:
942      EntityInfo.kind = CXIdxEntity_CXXInterface;
943      EntityInfo.lang = CXIdxEntityLang_CXX;
944      break;
945    case TTK_Enum:
946      EntityInfo.kind = CXIdxEntity_Enum; break;
947    }
948
949    if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D))
950      if (!CXXRec->isCLike())
951        EntityInfo.lang = CXIdxEntityLang_CXX;
952
953    if (isa<ClassTemplatePartialSpecializationDecl>(D)) {
954      EntityInfo.templateKind = CXIdxEntity_TemplatePartialSpecialization;
955    } else if (isa<ClassTemplateSpecializationDecl>(D)) {
956      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
957    }
958
959  } else {
960    switch (D->getKind()) {
961    case Decl::Typedef:
962      EntityInfo.kind = CXIdxEntity_Typedef; break;
963    case Decl::Function:
964      EntityInfo.kind = CXIdxEntity_Function;
965      break;
966    case Decl::ParmVar:
967      EntityInfo.kind = CXIdxEntity_Variable;
968      break;
969    case Decl::Var:
970      EntityInfo.kind = CXIdxEntity_Variable;
971      if (isa<CXXRecordDecl>(D->getDeclContext())) {
972        EntityInfo.kind = CXIdxEntity_CXXStaticVariable;
973        EntityInfo.lang = CXIdxEntityLang_CXX;
974      }
975      break;
976    case Decl::Field:
977      EntityInfo.kind = CXIdxEntity_Field;
978      if (const CXXRecordDecl *
979            CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {
980        // FIXME: isPOD check is not sufficient, a POD can contain methods,
981        // we want a isCStructLike check.
982        if (!CXXRec->isPOD())
983          EntityInfo.lang = CXIdxEntityLang_CXX;
984      }
985      break;
986    case Decl::EnumConstant:
987      EntityInfo.kind = CXIdxEntity_EnumConstant; break;
988    case Decl::ObjCInterface:
989      EntityInfo.kind = CXIdxEntity_ObjCClass;
990      EntityInfo.lang = CXIdxEntityLang_ObjC;
991      break;
992    case Decl::ObjCProtocol:
993      EntityInfo.kind = CXIdxEntity_ObjCProtocol;
994      EntityInfo.lang = CXIdxEntityLang_ObjC;
995      break;
996    case Decl::ObjCCategory:
997      EntityInfo.kind = CXIdxEntity_ObjCCategory;
998      EntityInfo.lang = CXIdxEntityLang_ObjC;
999      break;
1000    case Decl::ObjCMethod:
1001      if (cast<ObjCMethodDecl>(D)->isInstanceMethod())
1002        EntityInfo.kind = CXIdxEntity_ObjCInstanceMethod;
1003      else
1004        EntityInfo.kind = CXIdxEntity_ObjCClassMethod;
1005      EntityInfo.lang = CXIdxEntityLang_ObjC;
1006      break;
1007    case Decl::ObjCProperty:
1008      EntityInfo.kind = CXIdxEntity_ObjCProperty;
1009      EntityInfo.lang = CXIdxEntityLang_ObjC;
1010      break;
1011    case Decl::ObjCIvar:
1012      EntityInfo.kind = CXIdxEntity_ObjCIvar;
1013      EntityInfo.lang = CXIdxEntityLang_ObjC;
1014      break;
1015    case Decl::Namespace:
1016      EntityInfo.kind = CXIdxEntity_CXXNamespace;
1017      EntityInfo.lang = CXIdxEntityLang_CXX;
1018      break;
1019    case Decl::NamespaceAlias:
1020      EntityInfo.kind = CXIdxEntity_CXXNamespaceAlias;
1021      EntityInfo.lang = CXIdxEntityLang_CXX;
1022      break;
1023    case Decl::CXXConstructor:
1024      EntityInfo.kind = CXIdxEntity_CXXConstructor;
1025      EntityInfo.lang = CXIdxEntityLang_CXX;
1026      break;
1027    case Decl::CXXDestructor:
1028      EntityInfo.kind = CXIdxEntity_CXXDestructor;
1029      EntityInfo.lang = CXIdxEntityLang_CXX;
1030      break;
1031    case Decl::CXXConversion:
1032      EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1033      EntityInfo.lang = CXIdxEntityLang_CXX;
1034      break;
1035    case Decl::CXXMethod: {
1036      const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
1037      if (MD->isStatic())
1038        EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1039      else
1040        EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1041      EntityInfo.lang = CXIdxEntityLang_CXX;
1042      break;
1043    }
1044    case Decl::ClassTemplate:
1045      EntityInfo.kind = CXIdxEntity_CXXClass;
1046      EntityInfo.templateKind = CXIdxEntity_Template;
1047      break;
1048    case Decl::FunctionTemplate:
1049      EntityInfo.kind = CXIdxEntity_Function;
1050      EntityInfo.templateKind = CXIdxEntity_Template;
1051      if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(
1052                           cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {
1053        if (isa<CXXConstructorDecl>(MD))
1054          EntityInfo.kind = CXIdxEntity_CXXConstructor;
1055        else if (isa<CXXDestructorDecl>(MD))
1056          EntityInfo.kind = CXIdxEntity_CXXDestructor;
1057        else if (isa<CXXConversionDecl>(MD))
1058          EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1059        else {
1060          if (MD->isStatic())
1061            EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1062          else
1063            EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1064        }
1065      }
1066      break;
1067    case Decl::TypeAliasTemplate:
1068      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1069      EntityInfo.templateKind = CXIdxEntity_Template;
1070      break;
1071    case Decl::TypeAlias:
1072      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1073      EntityInfo.lang = CXIdxEntityLang_CXX;
1074      break;
1075    default:
1076      break;
1077    }
1078  }
1079
1080  if (EntityInfo.kind == CXIdxEntity_Unexposed)
1081    return;
1082
1083  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1084    if (FD->getTemplatedKind() ==
1085          FunctionDecl::TK_FunctionTemplateSpecialization)
1086      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
1087  }
1088
1089  if (EntityInfo.templateKind != CXIdxEntity_NonTemplate)
1090    EntityInfo.lang = CXIdxEntityLang_CXX;
1091
1092  if (IdentifierInfo *II = D->getIdentifier()) {
1093    EntityInfo.name = SA.toCStr(II->getName());
1094
1095  } else if (isa<TagDecl>(D) || isa<FieldDecl>(D) || isa<NamespaceDecl>(D)) {
1096    EntityInfo.name = 0; // anonymous tag/field/namespace.
1097
1098  } else {
1099    SmallString<256> StrBuf;
1100    {
1101      llvm::raw_svector_ostream OS(StrBuf);
1102      D->printName(OS);
1103    }
1104    EntityInfo.name = SA.copyCStr(StrBuf.str());
1105  }
1106
1107  {
1108    SmallString<512> StrBuf;
1109    bool Ignore = getDeclCursorUSR(D, StrBuf);
1110    if (Ignore) {
1111      EntityInfo.USR = 0;
1112    } else {
1113      EntityInfo.USR = SA.copyCStr(StrBuf.str());
1114    }
1115  }
1116}
1117
1118void IndexingContext::getContainerInfo(const DeclContext *DC,
1119                                       ContainerInfo &ContInfo) {
1120  ContInfo.cursor = getCursor(cast<Decl>(DC));
1121  ContInfo.DC = DC;
1122  ContInfo.IndexCtx = this;
1123}
1124
1125CXCursor IndexingContext::getRefCursor(const NamedDecl *D, SourceLocation Loc) {
1126  if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
1127    return MakeCursorTypeRef(TD, Loc, CXTU);
1128  if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
1129    return MakeCursorObjCClassRef(ID, Loc, CXTU);
1130  if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
1131    return MakeCursorObjCProtocolRef(PD, Loc, CXTU);
1132  if (const TemplateDecl *Template = dyn_cast<TemplateDecl>(D))
1133    return MakeCursorTemplateRef(Template, Loc, CXTU);
1134  if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(D))
1135    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1136  if (const NamespaceAliasDecl *Namespace = dyn_cast<NamespaceAliasDecl>(D))
1137    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1138  if (const FieldDecl *Field = dyn_cast<FieldDecl>(D))
1139    return MakeCursorMemberRef(Field, Loc, CXTU);
1140  if (const VarDecl *Var = dyn_cast<VarDecl>(D))
1141    return MakeCursorVariableRef(Var, Loc, CXTU);
1142
1143  return clang_getNullCursor();
1144}
1145
1146bool IndexingContext::shouldIgnoreIfImplicit(const Decl *D) {
1147  if (isa<ObjCInterfaceDecl>(D))
1148    return false;
1149  if (isa<ObjCCategoryDecl>(D))
1150    return false;
1151  if (isa<ObjCIvarDecl>(D))
1152    return false;
1153  if (isa<ObjCMethodDecl>(D))
1154    return false;
1155  if (isa<ImportDecl>(D))
1156    return false;
1157  return true;
1158}
1159
1160bool IndexingContext::isTemplateImplicitInstantiation(const Decl *D) {
1161  if (const ClassTemplateSpecializationDecl *
1162        SD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1163    return SD->getSpecializationKind() == TSK_ImplicitInstantiation;
1164  }
1165  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1166    return FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation;
1167  }
1168  return false;
1169}
1170