IndexingContext.cpp revision 0b5ca510fb00eeb19ab82ebfd3c2585404bc9aa8 
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 (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, 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 (QualifiedTypeLoc QL = TL.getAs<QualifiedTypeLoc>())
170    TL = QL.getUnqualifiedLoc();
171
172  if (ElaboratedTypeLoc EL = TL.getAs<ElaboratedTypeLoc>())
173    return EL.getNamedTypeLoc().getBeginLoc();
174  if (DependentNameTypeLoc DL = TL.getAs<DependentNameTypeLoc>())
175    return DL.getNameLoc();
176  if (DependentTemplateSpecializationTypeLoc DTL =
177          TL.getAs<DependentTemplateSpecializationTypeLoc>())
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  cxtu::getASTUnit(CXTU)->setASTContext(&ctx);
201}
202
203void IndexingContext::setPreprocessor(Preprocessor &PP) {
204  cxtu::getASTUnit(CXTU)->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->getFormalLinkage()) {
215    case NoLinkage:
216    case VisibleNoLinkage:
217    case InternalLinkage:
218      return true;
219    case UniqueExternalLinkage:
220      llvm_unreachable("Not a sema linkage");
221    case ExternalLinkage:
222      return false;
223    }
224  }
225
226  return true;
227}
228
229bool IndexingContext::shouldAbort() {
230  if (!CB.abortQuery)
231    return false;
232  return CB.abortQuery(ClientData, 0);
233}
234
235void IndexingContext::enteredMainFile(const FileEntry *File) {
236  if (File && CB.enteredMainFile) {
237    CXIdxClientFile idxFile =
238      CB.enteredMainFile(ClientData,
239                         static_cast<CXFile>(const_cast<FileEntry *>(File)), 0);
240    FileMap[File] = idxFile;
241  }
242}
243
244void IndexingContext::ppIncludedFile(SourceLocation hashLoc,
245                                     StringRef filename,
246                                     const FileEntry *File,
247                                     bool isImport, bool isAngled,
248                                     bool isModuleImport) {
249  if (!CB.ppIncludedFile)
250    return;
251
252  ScratchAlloc SA(*this);
253  CXIdxIncludedFileInfo Info = { getIndexLoc(hashLoc),
254                                 SA.toCStr(filename),
255                                 static_cast<CXFile>(
256                                   const_cast<FileEntry *>(File)),
257                                 isImport, isAngled, isModuleImport };
258  CXIdxClientFile idxFile = CB.ppIncludedFile(ClientData, &Info);
259  FileMap[File] = idxFile;
260}
261
262void IndexingContext::importedModule(const ImportDecl *ImportD) {
263  if (!CB.importedASTFile)
264    return;
265
266  Module *Mod = ImportD->getImportedModule();
267  if (!Mod)
268    return;
269  std::string ModuleName = Mod->getFullModuleName();
270
271  CXIdxImportedASTFileInfo Info = {
272                                    static_cast<CXFile>(
273                                    const_cast<FileEntry *>(Mod->getASTFile())),
274                                    Mod,
275                                    getIndexLoc(ImportD->getLocation()),
276                                    ImportD->isImplicit()
277                                  };
278  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
279  (void)astFile;
280}
281
282void IndexingContext::importedPCH(const FileEntry *File) {
283  if (!CB.importedASTFile)
284    return;
285
286  CXIdxImportedASTFileInfo Info = {
287                                    static_cast<CXFile>(
288                                      const_cast<FileEntry *>(File)),
289                                    /*module=*/NULL,
290                                    getIndexLoc(SourceLocation()),
291                                    /*isImplicit=*/false
292                                  };
293  CXIdxClientASTFile astFile = CB.importedASTFile(ClientData, &Info);
294  (void)astFile;
295}
296
297void IndexingContext::startedTranslationUnit() {
298  CXIdxClientContainer idxCont = 0;
299  if (CB.startedTranslationUnit)
300    idxCont = CB.startedTranslationUnit(ClientData, 0);
301  addContainerInMap(Ctx->getTranslationUnitDecl(), idxCont);
302}
303
304void IndexingContext::handleDiagnosticSet(CXDiagnostic CXDiagSet) {
305  if (!CB.diagnostic)
306    return;
307
308  CB.diagnostic(ClientData, CXDiagSet, 0);
309}
310
311bool IndexingContext::handleDecl(const NamedDecl *D,
312                                 SourceLocation Loc, CXCursor Cursor,
313                                 DeclInfo &DInfo,
314                                 const DeclContext *LexicalDC) {
315  if (!CB.indexDeclaration || !D)
316    return false;
317  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
318    return false;
319
320  ScratchAlloc SA(*this);
321  getEntityInfo(D, DInfo.EntInfo, SA);
322  if ((!shouldIndexFunctionLocalSymbols() && !DInfo.EntInfo.USR)
323      || Loc.isInvalid())
324    return false;
325
326  if (!LexicalDC)
327    LexicalDC = D->getLexicalDeclContext();
328
329  if (shouldSuppressRefs())
330    markEntityOccurrenceInFile(D, Loc);
331
332  DInfo.entityInfo = &DInfo.EntInfo;
333  DInfo.cursor = Cursor;
334  DInfo.loc = getIndexLoc(Loc);
335  DInfo.isImplicit = D->isImplicit();
336
337  DInfo.attributes = DInfo.EntInfo.attributes;
338  DInfo.numAttributes = DInfo.EntInfo.numAttributes;
339
340  getContainerInfo(D->getDeclContext(), DInfo.SemanticContainer);
341  DInfo.semanticContainer = &DInfo.SemanticContainer;
342
343  if (LexicalDC == D->getDeclContext()) {
344    DInfo.lexicalContainer = &DInfo.SemanticContainer;
345  } else if (isTemplateImplicitInstantiation(D)) {
346    // Implicit instantiations have the lexical context of where they were
347    // instantiated first. We choose instead the semantic context because:
348    // 1) at the time that we see the instantiation we have not seen the
349    //   function where it occurred yet.
350    // 2) the lexical context of the first instantiation is not useful
351    //   information anyway.
352    DInfo.lexicalContainer = &DInfo.SemanticContainer;
353  } else {
354    getContainerInfo(LexicalDC, DInfo.LexicalContainer);
355    DInfo.lexicalContainer = &DInfo.LexicalContainer;
356  }
357
358  if (DInfo.isContainer) {
359    getContainerInfo(getEntityContainer(D), DInfo.DeclAsContainer);
360    DInfo.declAsContainer = &DInfo.DeclAsContainer;
361  }
362
363  CB.indexDeclaration(ClientData, &DInfo);
364  return true;
365}
366
367bool IndexingContext::handleObjCContainer(const ObjCContainerDecl *D,
368                                          SourceLocation Loc, CXCursor Cursor,
369                                          ObjCContainerDeclInfo &ContDInfo) {
370  ContDInfo.ObjCContDeclInfo.declInfo = &ContDInfo;
371  return handleDecl(D, Loc, Cursor, ContDInfo);
372}
373
374bool IndexingContext::handleFunction(const FunctionDecl *D) {
375  bool isDef = D->isThisDeclarationADefinition();
376  bool isContainer = isDef;
377  bool isSkipped = false;
378  if (D->hasSkippedBody()) {
379    isSkipped = true;
380    isDef = true;
381    isContainer = false;
382  }
383
384  DeclInfo DInfo(!D->isFirstDeclaration(), isDef, isContainer);
385  if (isSkipped)
386    DInfo.flags |= CXIdxDeclFlag_Skipped;
387  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
388}
389
390bool IndexingContext::handleVar(const VarDecl *D) {
391  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
392                 /*isContainer=*/false);
393  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
394}
395
396bool IndexingContext::handleField(const FieldDecl *D) {
397  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
398                 /*isContainer=*/false);
399  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
400}
401
402bool IndexingContext::handleMSProperty(const MSPropertyDecl *D) {
403  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
404                 /*isContainer=*/false);
405  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
406}
407
408bool IndexingContext::handleEnumerator(const EnumConstantDecl *D) {
409  DeclInfo DInfo(/*isRedeclaration=*/false, /*isDefinition=*/true,
410                 /*isContainer=*/false);
411  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
412}
413
414bool IndexingContext::handleTagDecl(const TagDecl *D) {
415  if (const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(D))
416    return handleCXXRecordDecl(CXXRD, D);
417
418  DeclInfo DInfo(!D->isFirstDeclaration(), D->isThisDeclarationADefinition(),
419                 D->isThisDeclarationADefinition());
420  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
421}
422
423bool IndexingContext::handleTypedefName(const TypedefNameDecl *D) {
424  DeclInfo DInfo(!D->isFirstDeclaration(), /*isDefinition=*/true,
425                 /*isContainer=*/false);
426  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
427}
428
429bool IndexingContext::handleObjCInterface(const ObjCInterfaceDecl *D) {
430  // For @class forward declarations, suppress them the same way as references.
431  if (!D->isThisDeclarationADefinition()) {
432    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
433      return false; // already occurred.
434
435    // FIXME: This seems like the wrong definition for redeclaration.
436    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
437    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true, isRedeclaration,
438                                    /*isImplementation=*/false);
439    return handleObjCContainer(D, D->getLocation(),
440                               MakeCursorObjCClassRef(D, D->getLocation(),
441                                                      CXTU),
442                               ContDInfo);
443  }
444
445  ScratchAlloc SA(*this);
446
447  CXIdxBaseClassInfo BaseClass;
448  EntityInfo BaseEntity;
449  BaseClass.cursor = clang_getNullCursor();
450  if (ObjCInterfaceDecl *SuperD = D->getSuperClass()) {
451    getEntityInfo(SuperD, BaseEntity, SA);
452    SourceLocation SuperLoc = D->getSuperClassLoc();
453    BaseClass.base = &BaseEntity;
454    BaseClass.cursor = MakeCursorObjCSuperClassRef(SuperD, SuperLoc, CXTU);
455    BaseClass.loc = getIndexLoc(SuperLoc);
456
457    if (shouldSuppressRefs())
458      markEntityOccurrenceInFile(SuperD, SuperLoc);
459  }
460
461  ObjCProtocolList EmptyProtoList;
462  ObjCProtocolListInfo ProtInfo(D->isThisDeclarationADefinition()
463                                  ? D->getReferencedProtocols()
464                                  : EmptyProtoList,
465                                *this, SA);
466
467  ObjCInterfaceDeclInfo InterInfo(D);
468  InterInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
469  InterInfo.ObjCInterDeclInfo.containerInfo = &InterInfo.ObjCContDeclInfo;
470  InterInfo.ObjCInterDeclInfo.superInfo = D->getSuperClass() ? &BaseClass : 0;
471  InterInfo.ObjCInterDeclInfo.protocols = &InterInfo.ObjCProtoListInfo;
472
473  return handleObjCContainer(D, D->getLocation(), getCursor(D), InterInfo);
474}
475
476bool IndexingContext::handleObjCImplementation(
477                                              const ObjCImplementationDecl *D) {
478  ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/false,
479                      /*isRedeclaration=*/true,
480                      /*isImplementation=*/true);
481  return handleObjCContainer(D, D->getLocation(), getCursor(D), ContDInfo);
482}
483
484bool IndexingContext::handleObjCProtocol(const ObjCProtocolDecl *D) {
485  if (!D->isThisDeclarationADefinition()) {
486    if (shouldSuppressRefs() && markEntityOccurrenceInFile(D, D->getLocation()))
487      return false; // already occurred.
488
489    // FIXME: This seems like the wrong definition for redeclaration.
490    bool isRedeclaration = D->hasDefinition() || D->getPreviousDecl();
491    ObjCContainerDeclInfo ContDInfo(/*isForwardRef=*/true,
492                                    isRedeclaration,
493                                    /*isImplementation=*/false);
494    return handleObjCContainer(D, D->getLocation(),
495                               MakeCursorObjCProtocolRef(D, D->getLocation(),
496                                                         CXTU),
497                               ContDInfo);
498  }
499
500  ScratchAlloc SA(*this);
501  ObjCProtocolList EmptyProtoList;
502  ObjCProtocolListInfo ProtListInfo(D->isThisDeclarationADefinition()
503                                      ? D->getReferencedProtocols()
504                                      : EmptyProtoList,
505                                    *this, SA);
506
507  ObjCProtocolDeclInfo ProtInfo(D);
508  ProtInfo.ObjCProtoRefListInfo = ProtListInfo.getListInfo();
509
510  return handleObjCContainer(D, D->getLocation(), getCursor(D), ProtInfo);
511}
512
513bool IndexingContext::handleObjCCategory(const ObjCCategoryDecl *D) {
514  ScratchAlloc SA(*this);
515
516  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/false);
517  EntityInfo ClassEntity;
518  const ObjCInterfaceDecl *IFaceD = D->getClassInterface();
519  SourceLocation ClassLoc = D->getLocation();
520  SourceLocation CategoryLoc = D->IsClassExtension() ? ClassLoc
521                                                     : D->getCategoryNameLoc();
522  getEntityInfo(IFaceD, ClassEntity, SA);
523
524  if (shouldSuppressRefs())
525    markEntityOccurrenceInFile(IFaceD, ClassLoc);
526
527  ObjCProtocolListInfo ProtInfo(D->getReferencedProtocols(), *this, SA);
528
529  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
530  if (IFaceD) {
531    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
532    CatDInfo.ObjCCatDeclInfo.classCursor =
533        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
534  } else {
535    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
536    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
537  }
538  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
539  CatDInfo.ObjCProtoListInfo = ProtInfo.getListInfo();
540  CatDInfo.ObjCCatDeclInfo.protocols = &CatDInfo.ObjCProtoListInfo;
541
542  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
543}
544
545bool IndexingContext::handleObjCCategoryImpl(const ObjCCategoryImplDecl *D) {
546  ScratchAlloc SA(*this);
547
548  const ObjCCategoryDecl *CatD = D->getCategoryDecl();
549  ObjCCategoryDeclInfo CatDInfo(/*isImplementation=*/true);
550  EntityInfo ClassEntity;
551  const ObjCInterfaceDecl *IFaceD = CatD->getClassInterface();
552  SourceLocation ClassLoc = D->getLocation();
553  SourceLocation CategoryLoc = D->getCategoryNameLoc();
554  getEntityInfo(IFaceD, ClassEntity, SA);
555
556  if (shouldSuppressRefs())
557    markEntityOccurrenceInFile(IFaceD, ClassLoc);
558
559  CatDInfo.ObjCCatDeclInfo.containerInfo = &CatDInfo.ObjCContDeclInfo;
560  if (IFaceD) {
561    CatDInfo.ObjCCatDeclInfo.objcClass = &ClassEntity;
562    CatDInfo.ObjCCatDeclInfo.classCursor =
563        MakeCursorObjCClassRef(IFaceD, ClassLoc, CXTU);
564  } else {
565    CatDInfo.ObjCCatDeclInfo.objcClass = 0;
566    CatDInfo.ObjCCatDeclInfo.classCursor = clang_getNullCursor();
567  }
568  CatDInfo.ObjCCatDeclInfo.classLoc = getIndexLoc(ClassLoc);
569  CatDInfo.ObjCCatDeclInfo.protocols = 0;
570
571  return handleObjCContainer(D, CategoryLoc, getCursor(D), CatDInfo);
572}
573
574bool IndexingContext::handleObjCMethod(const ObjCMethodDecl *D) {
575  bool isDef = D->isThisDeclarationADefinition();
576  bool isContainer = isDef;
577  bool isSkipped = false;
578  if (D->hasSkippedBody()) {
579    isSkipped = true;
580    isDef = true;
581    isContainer = false;
582  }
583
584  DeclInfo DInfo(!D->isCanonicalDecl(), isDef, isContainer);
585  if (isSkipped)
586    DInfo.flags |= CXIdxDeclFlag_Skipped;
587  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
588}
589
590bool IndexingContext::handleSynthesizedObjCProperty(
591                                                const ObjCPropertyImplDecl *D) {
592  ObjCPropertyDecl *PD = D->getPropertyDecl();
593  return handleReference(PD, D->getLocation(), getCursor(D), 0, D->getDeclContext());
594}
595
596bool IndexingContext::handleSynthesizedObjCMethod(const ObjCMethodDecl *D,
597                                                  SourceLocation Loc,
598                                                 const DeclContext *LexicalDC) {
599  DeclInfo DInfo(/*isRedeclaration=*/true, /*isDefinition=*/true,
600                 /*isContainer=*/false);
601  return handleDecl(D, Loc, getCursor(D), DInfo, LexicalDC);
602}
603
604bool IndexingContext::handleObjCProperty(const ObjCPropertyDecl *D) {
605  ScratchAlloc SA(*this);
606
607  ObjCPropertyDeclInfo DInfo;
608  EntityInfo GetterEntity;
609  EntityInfo SetterEntity;
610
611  DInfo.ObjCPropDeclInfo.declInfo = &DInfo;
612
613  if (ObjCMethodDecl *Getter = D->getGetterMethodDecl()) {
614    getEntityInfo(Getter, GetterEntity, SA);
615    DInfo.ObjCPropDeclInfo.getter = &GetterEntity;
616  } else {
617    DInfo.ObjCPropDeclInfo.getter = 0;
618  }
619  if (ObjCMethodDecl *Setter = D->getSetterMethodDecl()) {
620    getEntityInfo(Setter, SetterEntity, SA);
621    DInfo.ObjCPropDeclInfo.setter = &SetterEntity;
622  } else {
623    DInfo.ObjCPropDeclInfo.setter = 0;
624  }
625
626  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
627}
628
629bool IndexingContext::handleNamespace(const NamespaceDecl *D) {
630  DeclInfo DInfo(/*isRedeclaration=*/!D->isOriginalNamespace(),
631                 /*isDefinition=*/true,
632                 /*isContainer=*/true);
633  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
634}
635
636bool IndexingContext::handleClassTemplate(const ClassTemplateDecl *D) {
637  return handleCXXRecordDecl(D->getTemplatedDecl(), D);
638}
639
640bool IndexingContext::handleFunctionTemplate(const FunctionTemplateDecl *D) {
641  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
642                 /*isDefinition=*/D->isThisDeclarationADefinition(),
643                 /*isContainer=*/D->isThisDeclarationADefinition());
644  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
645}
646
647bool IndexingContext::handleTypeAliasTemplate(const TypeAliasTemplateDecl *D) {
648  DeclInfo DInfo(/*isRedeclaration=*/!D->isCanonicalDecl(),
649                 /*isDefinition=*/true, /*isContainer=*/false);
650  return handleDecl(D, D->getLocation(), getCursor(D), DInfo);
651}
652
653bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
654                                      const NamedDecl *Parent,
655                                      const DeclContext *DC,
656                                      const Expr *E,
657                                      CXIdxEntityRefKind Kind) {
658  if (!D)
659    return false;
660
661  CXCursor Cursor = E ? MakeCXCursor(E, cast<Decl>(DC), CXTU)
662                      : getRefCursor(D, Loc);
663  return handleReference(D, Loc, Cursor, Parent, DC, E, Kind);
664}
665
666bool IndexingContext::handleReference(const NamedDecl *D, SourceLocation Loc,
667                                      CXCursor Cursor,
668                                      const NamedDecl *Parent,
669                                      const DeclContext *DC,
670                                      const Expr *E,
671                                      CXIdxEntityRefKind Kind) {
672  if (!CB.indexEntityReference)
673    return false;
674
675  if (!D)
676    return false;
677  if (Loc.isInvalid())
678    return false;
679  if (!shouldIndexFunctionLocalSymbols() && isFunctionLocalDecl(D))
680    return false;
681  if (isNotFromSourceFile(D->getLocation()))
682    return false;
683  if (D->isImplicit() && shouldIgnoreIfImplicit(D))
684    return false;
685
686  if (shouldSuppressRefs()) {
687    if (markEntityOccurrenceInFile(D, Loc))
688      return false; // already occurred.
689  }
690
691  ScratchAlloc SA(*this);
692  EntityInfo RefEntity, ParentEntity;
693  getEntityInfo(D, RefEntity, SA);
694  if (!RefEntity.USR)
695    return false;
696
697  getEntityInfo(Parent, ParentEntity, SA);
698
699  ContainerInfo Container;
700  getContainerInfo(DC, Container);
701
702  CXIdxEntityRefInfo Info = { Kind,
703                              Cursor,
704                              getIndexLoc(Loc),
705                              &RefEntity,
706                              Parent ? &ParentEntity : 0,
707                              &Container };
708  CB.indexEntityReference(ClientData, &Info);
709  return true;
710}
711
712bool IndexingContext::isNotFromSourceFile(SourceLocation Loc) const {
713  if (Loc.isInvalid())
714    return true;
715  SourceManager &SM = Ctx->getSourceManager();
716  SourceLocation FileLoc = SM.getFileLoc(Loc);
717  FileID FID = SM.getFileID(FileLoc);
718  return SM.getFileEntryForID(FID) == 0;
719}
720
721void IndexingContext::addContainerInMap(const DeclContext *DC,
722                                        CXIdxClientContainer container) {
723  if (!DC)
724    return;
725
726  ContainerMapTy::iterator I = ContainerMap.find(DC);
727  if (I == ContainerMap.end()) {
728    if (container)
729      ContainerMap[DC] = container;
730    return;
731  }
732  // Allow changing the container of a previously seen DeclContext so we
733  // can handle invalid user code, like a function re-definition.
734  if (container)
735    I->second = container;
736  else
737    ContainerMap.erase(I);
738}
739
740CXIdxClientEntity IndexingContext::getClientEntity(const Decl *D) const {
741  if (!D)
742    return 0;
743  EntityMapTy::const_iterator I = EntityMap.find(D);
744  if (I == EntityMap.end())
745    return 0;
746  return I->second;
747}
748
749void IndexingContext::setClientEntity(const Decl *D, CXIdxClientEntity client) {
750  if (!D)
751    return;
752  EntityMap[D] = client;
753}
754
755bool IndexingContext::handleCXXRecordDecl(const CXXRecordDecl *RD,
756                                          const NamedDecl *OrigD) {
757  if (RD->isThisDeclarationADefinition()) {
758    ScratchAlloc SA(*this);
759    CXXClassDeclInfo CXXDInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
760                           /*isDefinition=*/RD->isThisDeclarationADefinition());
761    CXXBasesListInfo BaseList(RD, *this, SA);
762    CXXDInfo.CXXClassInfo.declInfo = &CXXDInfo;
763    CXXDInfo.CXXClassInfo.bases = BaseList.getBases();
764    CXXDInfo.CXXClassInfo.numBases = BaseList.getNumBases();
765
766    if (shouldSuppressRefs()) {
767      // Go through bases and mark them as referenced.
768      for (unsigned i = 0, e = BaseList.getNumBases(); i != e; ++i) {
769        const CXIdxBaseClassInfo *baseInfo = BaseList.getBases()[i];
770        if (baseInfo->base) {
771          const NamedDecl *BaseD = BaseList.BaseEntities[i].Dcl;
772          SourceLocation
773            Loc = SourceLocation::getFromRawEncoding(baseInfo->loc.int_data);
774          markEntityOccurrenceInFile(BaseD, Loc);
775        }
776      }
777    }
778
779    return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), CXXDInfo);
780  }
781
782  DeclInfo DInfo(/*isRedeclaration=*/!OrigD->isCanonicalDecl(),
783                 /*isDefinition=*/RD->isThisDeclarationADefinition(),
784                 /*isContainer=*/RD->isThisDeclarationADefinition());
785  return handleDecl(OrigD, OrigD->getLocation(), getCursor(OrigD), DInfo);
786}
787
788bool IndexingContext::markEntityOccurrenceInFile(const NamedDecl *D,
789                                                 SourceLocation Loc) {
790  if (!D || Loc.isInvalid())
791    return true;
792
793  SourceManager &SM = Ctx->getSourceManager();
794  D = getEntityDecl(D);
795
796  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(SM.getFileLoc(Loc));
797  FileID FID = LocInfo.first;
798  if (FID.isInvalid())
799    return true;
800
801  const FileEntry *FE = SM.getFileEntryForID(FID);
802  if (!FE)
803    return true;
804  RefFileOccurence RefOccur(FE, D);
805  std::pair<llvm::DenseSet<RefFileOccurence>::iterator, bool>
806  res = RefFileOccurences.insert(RefOccur);
807  if (!res.second)
808    return true; // already in map.
809
810  return false;
811}
812
813const NamedDecl *IndexingContext::getEntityDecl(const NamedDecl *D) const {
814  assert(D);
815  D = cast<NamedDecl>(D->getCanonicalDecl());
816
817  if (const ObjCImplementationDecl *
818               ImplD = dyn_cast<ObjCImplementationDecl>(D)) {
819    return getEntityDecl(ImplD->getClassInterface());
820
821  } else if (const ObjCCategoryImplDecl *
822               CatImplD = dyn_cast<ObjCCategoryImplDecl>(D)) {
823    return getEntityDecl(CatImplD->getCategoryDecl());
824  } else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
825    if (FunctionTemplateDecl *TemplD = FD->getDescribedFunctionTemplate())
826      return getEntityDecl(TemplD);
827  } else if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
828    if (ClassTemplateDecl *TemplD = RD->getDescribedClassTemplate())
829      return getEntityDecl(TemplD);
830  }
831
832  return D;
833}
834
835const DeclContext *
836IndexingContext::getEntityContainer(const Decl *D) const {
837  const DeclContext *DC = dyn_cast<DeclContext>(D);
838  if (DC)
839    return DC;
840
841  if (const ClassTemplateDecl *ClassTempl = dyn_cast<ClassTemplateDecl>(D)) {
842    DC = ClassTempl->getTemplatedDecl();
843  } else if (const FunctionTemplateDecl *
844          FuncTempl = dyn_cast<FunctionTemplateDecl>(D)) {
845    DC = FuncTempl->getTemplatedDecl();
846  }
847
848  return DC;
849}
850
851CXIdxClientContainer
852IndexingContext::getClientContainerForDC(const DeclContext *DC) const {
853  if (!DC)
854    return 0;
855
856  ContainerMapTy::const_iterator I = ContainerMap.find(DC);
857  if (I == ContainerMap.end())
858    return 0;
859
860  return I->second;
861}
862
863CXIdxClientFile IndexingContext::getIndexFile(const FileEntry *File) {
864  if (!File)
865    return 0;
866
867  FileMapTy::iterator FI = FileMap.find(File);
868  if (FI != FileMap.end())
869    return FI->second;
870
871  return 0;
872}
873
874CXIdxLoc IndexingContext::getIndexLoc(SourceLocation Loc) const {
875  CXIdxLoc idxLoc =  { {0, 0}, 0 };
876  if (Loc.isInvalid())
877    return idxLoc;
878
879  idxLoc.ptr_data[0] = const_cast<IndexingContext *>(this);
880  idxLoc.int_data = Loc.getRawEncoding();
881  return idxLoc;
882}
883
884void IndexingContext::translateLoc(SourceLocation Loc,
885                                   CXIdxClientFile *indexFile, CXFile *file,
886                                   unsigned *line, unsigned *column,
887                                   unsigned *offset) {
888  if (Loc.isInvalid())
889    return;
890
891  SourceManager &SM = Ctx->getSourceManager();
892  Loc = SM.getFileLoc(Loc);
893
894  std::pair<FileID, unsigned> LocInfo = SM.getDecomposedLoc(Loc);
895  FileID FID = LocInfo.first;
896  unsigned FileOffset = LocInfo.second;
897
898  if (FID.isInvalid())
899    return;
900
901  const FileEntry *FE = SM.getFileEntryForID(FID);
902  if (indexFile)
903    *indexFile = getIndexFile(FE);
904  if (file)
905    *file = const_cast<FileEntry *>(FE);
906  if (line)
907    *line = SM.getLineNumber(FID, FileOffset);
908  if (column)
909    *column = SM.getColumnNumber(FID, FileOffset);
910  if (offset)
911    *offset = FileOffset;
912}
913
914void IndexingContext::getEntityInfo(const NamedDecl *D,
915                                    EntityInfo &EntityInfo,
916                                    ScratchAlloc &SA) {
917  if (!D)
918    return;
919
920  D = getEntityDecl(D);
921  EntityInfo.cursor = getCursor(D);
922  EntityInfo.Dcl = D;
923  EntityInfo.IndexCtx = this;
924  EntityInfo.kind = CXIdxEntity_Unexposed;
925  EntityInfo.templateKind = CXIdxEntity_NonTemplate;
926  EntityInfo.lang = CXIdxEntityLang_C;
927
928  if (D->hasAttrs()) {
929    EntityInfo.AttrList = AttrListInfo::create(D, *this);
930    EntityInfo.attributes = EntityInfo.AttrList->getAttrs();
931    EntityInfo.numAttributes = EntityInfo.AttrList->getNumAttrs();
932  }
933
934  if (const TagDecl *TD = dyn_cast<TagDecl>(D)) {
935    switch (TD->getTagKind()) {
936    case TTK_Struct:
937      EntityInfo.kind = CXIdxEntity_Struct; break;
938    case TTK_Union:
939      EntityInfo.kind = CXIdxEntity_Union; break;
940    case TTK_Class:
941      EntityInfo.kind = CXIdxEntity_CXXClass;
942      EntityInfo.lang = CXIdxEntityLang_CXX;
943      break;
944    case TTK_Interface:
945      EntityInfo.kind = CXIdxEntity_CXXInterface;
946      EntityInfo.lang = CXIdxEntityLang_CXX;
947      break;
948    case TTK_Enum:
949      EntityInfo.kind = CXIdxEntity_Enum; break;
950    }
951
952    if (const CXXRecordDecl *CXXRec = dyn_cast<CXXRecordDecl>(D))
953      if (!CXXRec->isCLike())
954        EntityInfo.lang = CXIdxEntityLang_CXX;
955
956    if (isa<ClassTemplatePartialSpecializationDecl>(D)) {
957      EntityInfo.templateKind = CXIdxEntity_TemplatePartialSpecialization;
958    } else if (isa<ClassTemplateSpecializationDecl>(D)) {
959      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
960    }
961
962  } else {
963    switch (D->getKind()) {
964    case Decl::Typedef:
965      EntityInfo.kind = CXIdxEntity_Typedef; break;
966    case Decl::Function:
967      EntityInfo.kind = CXIdxEntity_Function;
968      break;
969    case Decl::ParmVar:
970      EntityInfo.kind = CXIdxEntity_Variable;
971      break;
972    case Decl::Var:
973      EntityInfo.kind = CXIdxEntity_Variable;
974      if (isa<CXXRecordDecl>(D->getDeclContext())) {
975        EntityInfo.kind = CXIdxEntity_CXXStaticVariable;
976        EntityInfo.lang = CXIdxEntityLang_CXX;
977      }
978      break;
979    case Decl::Field:
980      EntityInfo.kind = CXIdxEntity_Field;
981      if (const CXXRecordDecl *
982            CXXRec = dyn_cast<CXXRecordDecl>(D->getDeclContext())) {
983        // FIXME: isPOD check is not sufficient, a POD can contain methods,
984        // we want a isCStructLike check.
985        if (!CXXRec->isPOD())
986          EntityInfo.lang = CXIdxEntityLang_CXX;
987      }
988      break;
989    case Decl::EnumConstant:
990      EntityInfo.kind = CXIdxEntity_EnumConstant; break;
991    case Decl::ObjCInterface:
992      EntityInfo.kind = CXIdxEntity_ObjCClass;
993      EntityInfo.lang = CXIdxEntityLang_ObjC;
994      break;
995    case Decl::ObjCProtocol:
996      EntityInfo.kind = CXIdxEntity_ObjCProtocol;
997      EntityInfo.lang = CXIdxEntityLang_ObjC;
998      break;
999    case Decl::ObjCCategory:
1000      EntityInfo.kind = CXIdxEntity_ObjCCategory;
1001      EntityInfo.lang = CXIdxEntityLang_ObjC;
1002      break;
1003    case Decl::ObjCMethod:
1004      if (cast<ObjCMethodDecl>(D)->isInstanceMethod())
1005        EntityInfo.kind = CXIdxEntity_ObjCInstanceMethod;
1006      else
1007        EntityInfo.kind = CXIdxEntity_ObjCClassMethod;
1008      EntityInfo.lang = CXIdxEntityLang_ObjC;
1009      break;
1010    case Decl::ObjCProperty:
1011      EntityInfo.kind = CXIdxEntity_ObjCProperty;
1012      EntityInfo.lang = CXIdxEntityLang_ObjC;
1013      break;
1014    case Decl::ObjCIvar:
1015      EntityInfo.kind = CXIdxEntity_ObjCIvar;
1016      EntityInfo.lang = CXIdxEntityLang_ObjC;
1017      break;
1018    case Decl::Namespace:
1019      EntityInfo.kind = CXIdxEntity_CXXNamespace;
1020      EntityInfo.lang = CXIdxEntityLang_CXX;
1021      break;
1022    case Decl::NamespaceAlias:
1023      EntityInfo.kind = CXIdxEntity_CXXNamespaceAlias;
1024      EntityInfo.lang = CXIdxEntityLang_CXX;
1025      break;
1026    case Decl::CXXConstructor:
1027      EntityInfo.kind = CXIdxEntity_CXXConstructor;
1028      EntityInfo.lang = CXIdxEntityLang_CXX;
1029      break;
1030    case Decl::CXXDestructor:
1031      EntityInfo.kind = CXIdxEntity_CXXDestructor;
1032      EntityInfo.lang = CXIdxEntityLang_CXX;
1033      break;
1034    case Decl::CXXConversion:
1035      EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1036      EntityInfo.lang = CXIdxEntityLang_CXX;
1037      break;
1038    case Decl::CXXMethod: {
1039      const CXXMethodDecl *MD = cast<CXXMethodDecl>(D);
1040      if (MD->isStatic())
1041        EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1042      else
1043        EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1044      EntityInfo.lang = CXIdxEntityLang_CXX;
1045      break;
1046    }
1047    case Decl::ClassTemplate:
1048      EntityInfo.kind = CXIdxEntity_CXXClass;
1049      EntityInfo.templateKind = CXIdxEntity_Template;
1050      break;
1051    case Decl::FunctionTemplate:
1052      EntityInfo.kind = CXIdxEntity_Function;
1053      EntityInfo.templateKind = CXIdxEntity_Template;
1054      if (const CXXMethodDecl *MD = dyn_cast_or_null<CXXMethodDecl>(
1055                           cast<FunctionTemplateDecl>(D)->getTemplatedDecl())) {
1056        if (isa<CXXConstructorDecl>(MD))
1057          EntityInfo.kind = CXIdxEntity_CXXConstructor;
1058        else if (isa<CXXDestructorDecl>(MD))
1059          EntityInfo.kind = CXIdxEntity_CXXDestructor;
1060        else if (isa<CXXConversionDecl>(MD))
1061          EntityInfo.kind = CXIdxEntity_CXXConversionFunction;
1062        else {
1063          if (MD->isStatic())
1064            EntityInfo.kind = CXIdxEntity_CXXStaticMethod;
1065          else
1066            EntityInfo.kind = CXIdxEntity_CXXInstanceMethod;
1067        }
1068      }
1069      break;
1070    case Decl::TypeAliasTemplate:
1071      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1072      EntityInfo.templateKind = CXIdxEntity_Template;
1073      break;
1074    case Decl::TypeAlias:
1075      EntityInfo.kind = CXIdxEntity_CXXTypeAlias;
1076      EntityInfo.lang = CXIdxEntityLang_CXX;
1077      break;
1078    default:
1079      break;
1080    }
1081  }
1082
1083  if (EntityInfo.kind == CXIdxEntity_Unexposed)
1084    return;
1085
1086  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1087    if (FD->getTemplatedKind() ==
1088          FunctionDecl::TK_FunctionTemplateSpecialization)
1089      EntityInfo.templateKind = CXIdxEntity_TemplateSpecialization;
1090  }
1091
1092  if (EntityInfo.templateKind != CXIdxEntity_NonTemplate)
1093    EntityInfo.lang = CXIdxEntityLang_CXX;
1094
1095  if (IdentifierInfo *II = D->getIdentifier()) {
1096    EntityInfo.name = SA.toCStr(II->getName());
1097
1098  } else if (isa<TagDecl>(D) || isa<FieldDecl>(D) || isa<NamespaceDecl>(D)) {
1099    EntityInfo.name = 0; // anonymous tag/field/namespace.
1100
1101  } else {
1102    SmallString<256> StrBuf;
1103    {
1104      llvm::raw_svector_ostream OS(StrBuf);
1105      D->printName(OS);
1106    }
1107    EntityInfo.name = SA.copyCStr(StrBuf.str());
1108  }
1109
1110  {
1111    SmallString<512> StrBuf;
1112    bool Ignore = getDeclCursorUSR(D, StrBuf);
1113    if (Ignore) {
1114      EntityInfo.USR = 0;
1115    } else {
1116      EntityInfo.USR = SA.copyCStr(StrBuf.str());
1117    }
1118  }
1119}
1120
1121void IndexingContext::getContainerInfo(const DeclContext *DC,
1122                                       ContainerInfo &ContInfo) {
1123  ContInfo.cursor = getCursor(cast<Decl>(DC));
1124  ContInfo.DC = DC;
1125  ContInfo.IndexCtx = this;
1126}
1127
1128CXCursor IndexingContext::getRefCursor(const NamedDecl *D, SourceLocation Loc) {
1129  if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
1130    return MakeCursorTypeRef(TD, Loc, CXTU);
1131  if (const ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D))
1132    return MakeCursorObjCClassRef(ID, Loc, CXTU);
1133  if (const ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D))
1134    return MakeCursorObjCProtocolRef(PD, Loc, CXTU);
1135  if (const TemplateDecl *Template = dyn_cast<TemplateDecl>(D))
1136    return MakeCursorTemplateRef(Template, Loc, CXTU);
1137  if (const NamespaceDecl *Namespace = dyn_cast<NamespaceDecl>(D))
1138    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1139  if (const NamespaceAliasDecl *Namespace = dyn_cast<NamespaceAliasDecl>(D))
1140    return MakeCursorNamespaceRef(Namespace, Loc, CXTU);
1141  if (const FieldDecl *Field = dyn_cast<FieldDecl>(D))
1142    return MakeCursorMemberRef(Field, Loc, CXTU);
1143  if (const VarDecl *Var = dyn_cast<VarDecl>(D))
1144    return MakeCursorVariableRef(Var, Loc, CXTU);
1145
1146  return clang_getNullCursor();
1147}
1148
1149bool IndexingContext::shouldIgnoreIfImplicit(const Decl *D) {
1150  if (isa<ObjCInterfaceDecl>(D))
1151    return false;
1152  if (isa<ObjCCategoryDecl>(D))
1153    return false;
1154  if (isa<ObjCIvarDecl>(D))
1155    return false;
1156  if (isa<ObjCMethodDecl>(D))
1157    return false;
1158  if (isa<ImportDecl>(D))
1159    return false;
1160  return true;
1161}
1162
1163bool IndexingContext::isTemplateImplicitInstantiation(const Decl *D) {
1164  if (const ClassTemplateSpecializationDecl *
1165        SD = dyn_cast<ClassTemplateSpecializationDecl>(D)) {
1166    return SD->getSpecializationKind() == TSK_ImplicitInstantiation;
1167  }
1168  if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
1169    return FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation;
1170  }
1171  return false;
1172}
1173