Indexing.cpp revision e722ed6f5464232e23be52f4976312ef526fae99 
1//===- CIndexHigh.cpp - Higher level API functions ------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "IndexingContext.h"
11#include "CXCursor.h"
12#include "CXSourceLocation.h"
13#include "CXTranslationUnit.h"
14#include "CXString.h"
15#include "CIndexDiagnostic.h"
16#include "CIndexer.h"
17
18#include "clang/Frontend/ASTUnit.h"
19#include "clang/Frontend/CompilerInvocation.h"
20#include "clang/Frontend/CompilerInstance.h"
21#include "clang/Frontend/FrontendAction.h"
22#include "clang/Frontend/Utils.h"
23#include "clang/Sema/SemaConsumer.h"
24#include "clang/AST/ASTConsumer.h"
25#include "clang/AST/DeclVisitor.h"
26#include "clang/Lex/Preprocessor.h"
27#include "clang/Lex/PPCallbacks.h"
28#include "llvm/Support/MemoryBuffer.h"
29#include "llvm/Support/CrashRecoveryContext.h"
30
31using namespace clang;
32using namespace cxstring;
33using namespace cxtu;
34using namespace cxindex;
35
36static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx);
37
38namespace {
39
40//===----------------------------------------------------------------------===//
41// IndexPPCallbacks
42//===----------------------------------------------------------------------===//
43
44class IndexPPCallbacks : public PPCallbacks {
45  Preprocessor &PP;
46  IndexingContext &IndexCtx;
47  bool IsMainFileEntered;
48
49public:
50  IndexPPCallbacks(Preprocessor &PP, IndexingContext &indexCtx)
51    : PP(PP), IndexCtx(indexCtx), IsMainFileEntered(false) { }
52
53  virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
54                          SrcMgr::CharacteristicKind FileType, FileID PrevFID) {
55    if (IsMainFileEntered)
56      return;
57
58    SourceManager &SM = PP.getSourceManager();
59    SourceLocation MainFileLoc = SM.getLocForStartOfFile(SM.getMainFileID());
60
61    if (Loc == MainFileLoc && Reason == PPCallbacks::EnterFile) {
62      IsMainFileEntered = true;
63      IndexCtx.enteredMainFile(SM.getFileEntryForID(SM.getMainFileID()));
64    }
65  }
66
67  virtual void InclusionDirective(SourceLocation HashLoc,
68                                  const Token &IncludeTok,
69                                  StringRef FileName,
70                                  bool IsAngled,
71                                  const FileEntry *File,
72                                  SourceLocation EndLoc,
73                                  StringRef SearchPath,
74                                  StringRef RelativePath) {
75    bool isImport = (IncludeTok.is(tok::identifier) &&
76            IncludeTok.getIdentifierInfo()->getPPKeywordID() == tok::pp_import);
77    IndexCtx.ppIncludedFile(HashLoc, FileName, File, isImport, IsAngled);
78  }
79
80  /// MacroDefined - This hook is called whenever a macro definition is seen.
81  virtual void MacroDefined(const Token &Id, const MacroInfo *MI) {
82  }
83
84  /// MacroUndefined - This hook is called whenever a macro #undef is seen.
85  /// MI is released immediately following this callback.
86  virtual void MacroUndefined(const Token &MacroNameTok, const MacroInfo *MI) {
87  }
88
89  /// MacroExpands - This is called by when a macro invocation is found.
90  virtual void MacroExpands(const Token &MacroNameTok, const MacroInfo* MI,
91                            SourceRange Range) {
92  }
93
94  /// SourceRangeSkipped - This hook is called when a source range is skipped.
95  /// \param Range The SourceRange that was skipped. The range begins at the
96  /// #if/#else directive and ends after the #endif/#else directive.
97  virtual void SourceRangeSkipped(SourceRange Range) {
98  }
99};
100
101//===----------------------------------------------------------------------===//
102// IndexingConsumer
103//===----------------------------------------------------------------------===//
104
105class IndexingConsumer : public ASTConsumer {
106  IndexingContext &IndexCtx;
107
108public:
109  explicit IndexingConsumer(IndexingContext &indexCtx)
110    : IndexCtx(indexCtx) { }
111
112  // ASTConsumer Implementation
113
114  virtual void Initialize(ASTContext &Context) {
115    IndexCtx.setASTContext(Context);
116    IndexCtx.startedTranslationUnit();
117  }
118
119  virtual void HandleTranslationUnit(ASTContext &Ctx) {
120  }
121
122  virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
123    IndexCtx.indexDeclGroupRef(DG);
124    return !IndexCtx.shouldAbort();
125  }
126
127  /// \brief Handle the specified top-level declaration that occurred inside
128  /// and ObjC container.
129  virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
130    // They will be handled after the interface is seen first.
131    IndexCtx.addTUDeclInObjCContainer(D);
132  }
133
134  /// \brief This is called by the AST reader when deserializing things.
135  /// The default implementation forwards to HandleTopLevelDecl but we don't
136  /// care about them when indexing, so have an empty definition.
137  virtual void HandleInterestingDecl(DeclGroupRef D) {}
138
139  virtual void HandleTagDeclDefinition(TagDecl *D) {
140    if (!IndexCtx.shouldIndexImplicitTemplateInsts())
141      return;
142
143    if (IndexCtx.isTemplateImplicitInstantiation(D))
144      IndexCtx.indexDecl(D);
145  }
146
147  virtual void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) {
148    if (!IndexCtx.shouldIndexImplicitTemplateInsts())
149      return;
150
151    IndexCtx.indexDecl(D);
152  }
153};
154
155//===----------------------------------------------------------------------===//
156// CaptureDiagnosticConsumer
157//===----------------------------------------------------------------------===//
158
159class CaptureDiagnosticConsumer : public DiagnosticConsumer {
160  SmallVector<StoredDiagnostic, 4> Errors;
161public:
162
163  virtual void HandleDiagnostic(DiagnosticsEngine::Level level,
164                                const Diagnostic &Info) {
165    if (level >= DiagnosticsEngine::Error)
166      Errors.push_back(StoredDiagnostic(level, Info));
167  }
168
169  DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
170    return new IgnoringDiagConsumer();
171  }
172};
173
174//===----------------------------------------------------------------------===//
175// IndexingFrontendAction
176//===----------------------------------------------------------------------===//
177
178class IndexingFrontendAction : public ASTFrontendAction {
179  IndexingContext IndexCtx;
180  CXTranslationUnit CXTU;
181
182public:
183  IndexingFrontendAction(CXClientData clientData,
184                         IndexerCallbacks &indexCallbacks,
185                         unsigned indexOptions,
186                         CXTranslationUnit cxTU)
187    : IndexCtx(clientData, indexCallbacks, indexOptions, cxTU),
188      CXTU(cxTU) { }
189
190  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
191                                         StringRef InFile) {
192    IndexCtx.setASTContext(CI.getASTContext());
193    Preprocessor &PP = CI.getPreprocessor();
194    PP.addPPCallbacks(new IndexPPCallbacks(PP, IndexCtx));
195    IndexCtx.setPreprocessor(PP);
196    return new IndexingConsumer(IndexCtx);
197  }
198
199  virtual void EndSourceFileAction() {
200    indexDiagnostics(CXTU, IndexCtx);
201  }
202
203  virtual TranslationUnitKind getTranslationUnitKind() {
204    if (IndexCtx.shouldIndexImplicitTemplateInsts())
205      return TU_Complete;
206    else
207      return TU_Prefix;
208  }
209  virtual bool hasCodeCompletionSupport() const { return false; }
210};
211
212//===----------------------------------------------------------------------===//
213// clang_indexSourceFileUnit Implementation
214//===----------------------------------------------------------------------===//
215
216struct IndexSourceFileInfo {
217  CXIndexAction idxAction;
218  CXClientData client_data;
219  IndexerCallbacks *index_callbacks;
220  unsigned index_callbacks_size;
221  unsigned index_options;
222  const char *source_filename;
223  const char *const *command_line_args;
224  int num_command_line_args;
225  struct CXUnsavedFile *unsaved_files;
226  unsigned num_unsaved_files;
227  CXTranslationUnit *out_TU;
228  unsigned TU_options;
229  int result;
230};
231
232struct MemBufferOwner {
233  SmallVector<const llvm::MemoryBuffer *, 8> Buffers;
234
235  ~MemBufferOwner() {
236    for (SmallVectorImpl<const llvm::MemoryBuffer *>::iterator
237           I = Buffers.begin(), E = Buffers.end(); I != E; ++I)
238      delete *I;
239  }
240};
241
242} // anonymous namespace
243
244static void clang_indexSourceFile_Impl(void *UserData) {
245  IndexSourceFileInfo *ITUI =
246    static_cast<IndexSourceFileInfo*>(UserData);
247  CXIndex CIdx = (CXIndex)ITUI->idxAction;
248  CXClientData client_data = ITUI->client_data;
249  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
250  unsigned index_callbacks_size = ITUI->index_callbacks_size;
251  unsigned index_options = ITUI->index_options;
252  const char *source_filename = ITUI->source_filename;
253  const char * const *command_line_args = ITUI->command_line_args;
254  int num_command_line_args = ITUI->num_command_line_args;
255  struct CXUnsavedFile *unsaved_files = ITUI->unsaved_files;
256  unsigned num_unsaved_files = ITUI->num_unsaved_files;
257  CXTranslationUnit *out_TU  = ITUI->out_TU;
258  unsigned TU_options = ITUI->TU_options;
259  ITUI->result = 1; // init as error.
260
261  if (out_TU)
262    *out_TU = 0;
263  bool requestedToGetTU = (out_TU != 0);
264
265  if (!CIdx)
266    return;
267  if (!client_index_callbacks || index_callbacks_size == 0)
268    return;
269
270  IndexerCallbacks CB;
271  memset(&CB, 0, sizeof(CB));
272  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
273                                  ? index_callbacks_size : sizeof(CB);
274  memcpy(&CB, client_index_callbacks, ClientCBSize);
275
276  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
277
278  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
279    setThreadBackgroundPriority();
280
281  CaptureDiagnosticConsumer *CaptureDiag = new CaptureDiagnosticConsumer();
282
283  // Configure the diagnostics.
284  DiagnosticOptions DiagOpts;
285  IntrusiveRefCntPtr<DiagnosticsEngine>
286    Diags(CompilerInstance::createDiagnostics(DiagOpts, num_command_line_args,
287                                                command_line_args,
288                                                CaptureDiag,
289                                                /*ShouldOwnClient=*/true,
290                                                /*ShouldCloneClient=*/false));
291
292  // Recover resources if we crash before exiting this function.
293  llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
294    llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
295    DiagCleanup(Diags.getPtr());
296
297  OwningPtr<std::vector<const char *> >
298    Args(new std::vector<const char*>());
299
300  // Recover resources if we crash before exiting this method.
301  llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
302    ArgsCleanup(Args.get());
303
304  Args->insert(Args->end(), command_line_args,
305               command_line_args + num_command_line_args);
306
307  // The 'source_filename' argument is optional.  If the caller does not
308  // specify it then it is assumed that the source file is specified
309  // in the actual argument list.
310  // Put the source file after command_line_args otherwise if '-x' flag is
311  // present it will be unused.
312  if (source_filename)
313    Args->push_back(source_filename);
314
315  IntrusiveRefCntPtr<CompilerInvocation>
316    CInvok(createInvocationFromCommandLine(*Args, Diags));
317
318  if (!CInvok)
319    return;
320
321  // Recover resources if we crash before exiting this function.
322  llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
323    llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
324    CInvokCleanup(CInvok.getPtr());
325
326  if (CInvok->getFrontendOpts().Inputs.empty())
327    return;
328
329  OwningPtr<MemBufferOwner> BufOwner(new MemBufferOwner());
330
331  // Recover resources if we crash before exiting this method.
332  llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner>
333    BufOwnerCleanup(BufOwner.get());
334
335  for (unsigned I = 0; I != num_unsaved_files; ++I) {
336    StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
337    const llvm::MemoryBuffer *Buffer
338      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
339    CInvok->getPreprocessorOpts().addRemappedFile(unsaved_files[I].Filename, Buffer);
340    BufOwner->Buffers.push_back(Buffer);
341  }
342
343  // Since libclang is primarily used by batch tools dealing with
344  // (often very broken) source code, where spell-checking can have a
345  // significant negative impact on performance (particularly when
346  // precompiled headers are involved), we disable it.
347  CInvok->getLangOpts()->SpellChecking = false;
348
349  if (!requestedToGetTU)
350    CInvok->getPreprocessorOpts().DetailedRecord = false;
351
352  if (index_options & CXIndexOpt_SuppressWarnings)
353    CInvok->getDiagnosticOpts().IgnoreWarnings = true;
354
355  ASTUnit *Unit = ASTUnit::create(CInvok.getPtr(), Diags,
356                                  /*CaptureDiagnostics=*/true);
357  OwningPtr<CXTUOwner> CXTU(new CXTUOwner(MakeCXTranslationUnit(CXXIdx, Unit)));
358
359  // Recover resources if we crash before exiting this method.
360  llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
361    CXTUCleanup(CXTU.get());
362
363  OwningPtr<IndexingFrontendAction> IndexAction;
364  IndexAction.reset(new IndexingFrontendAction(client_data, CB,
365                                               index_options, CXTU->getTU()));
366
367  // Recover resources if we crash before exiting this method.
368  llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
369    IndexActionCleanup(IndexAction.get());
370
371  bool Persistent = requestedToGetTU;
372  StringRef ResourceFilesPath = CXXIdx->getClangResourcesPath();
373  bool OnlyLocalDecls = false;
374  bool PrecompilePreamble = false;
375  bool CacheCodeCompletionResults = false;
376  PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
377  PPOpts.DetailedRecord = false;
378  PPOpts.AllowPCHWithCompilerErrors = true;
379
380  if (requestedToGetTU) {
381    OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
382    PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
383    // FIXME: Add a flag for modules.
384    CacheCodeCompletionResults
385      = TU_options & CXTranslationUnit_CacheCompletionResults;
386    if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
387      PPOpts.DetailedRecord = true;
388    }
389  }
390
391  DiagnosticErrorTrap DiagTrap(*Diags);
392  bool Success = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
393                                                       IndexAction.get(),
394                                                       Unit,
395                                                       Persistent,
396                                                       ResourceFilesPath,
397                                                       OnlyLocalDecls,
398                                                    /*CaptureDiagnostics=*/true,
399                                                       PrecompilePreamble,
400                                                    CacheCodeCompletionResults);
401  if (DiagTrap.hasErrorOccurred() && CXXIdx->getDisplayDiagnostics())
402    printDiagsToStderr(Unit);
403
404  if (!Success)
405    return;
406
407  if (out_TU)
408    *out_TU = CXTU->takeTU();
409
410  ITUI->result = 0; // success.
411}
412
413//===----------------------------------------------------------------------===//
414// clang_indexTranslationUnit Implementation
415//===----------------------------------------------------------------------===//
416
417namespace {
418
419struct IndexTranslationUnitInfo {
420  CXIndexAction idxAction;
421  CXClientData client_data;
422  IndexerCallbacks *index_callbacks;
423  unsigned index_callbacks_size;
424  unsigned index_options;
425  CXTranslationUnit TU;
426  int result;
427};
428
429} // anonymous namespace
430
431static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
432  Preprocessor &PP = Unit.getPreprocessor();
433  if (!PP.getPreprocessingRecord())
434    return;
435
436  PreprocessingRecord &PPRec = *PP.getPreprocessingRecord();
437
438  // FIXME: Only deserialize inclusion directives.
439  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
440  // that it depends on.
441
442  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
443  PreprocessingRecord::iterator I, E;
444  if (OnlyLocal) {
445    I = PPRec.local_begin();
446    E = PPRec.local_end();
447  } else {
448    I = PPRec.begin();
449    E = PPRec.end();
450  }
451
452  for (; I != E; ++I) {
453    PreprocessedEntity *PPE = *I;
454
455    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
456      IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(), ID->getFileName(),
457                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
458                     !ID->wasInQuotes());
459    }
460  }
461}
462
463static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
464  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
465  // that it depends on.
466
467  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
468
469  if (OnlyLocal) {
470    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
471                                  TLEnd = Unit.top_level_end();
472           TL != TLEnd; ++TL) {
473      IdxCtx.indexTopLevelDecl(*TL);
474      if (IdxCtx.shouldAbort())
475        return;
476    }
477
478  } else {
479    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
480    for (TranslationUnitDecl::decl_iterator
481           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
482      IdxCtx.indexTopLevelDecl(*I);
483      if (IdxCtx.shouldAbort())
484        return;
485    }
486  }
487}
488
489static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
490  if (!IdxCtx.hasDiagnosticCallback())
491    return;
492
493  CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
494  IdxCtx.handleDiagnosticSet(DiagSet);
495}
496
497static void clang_indexTranslationUnit_Impl(void *UserData) {
498  IndexTranslationUnitInfo *ITUI =
499    static_cast<IndexTranslationUnitInfo*>(UserData);
500  CXTranslationUnit TU = ITUI->TU;
501  CXClientData client_data = ITUI->client_data;
502  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
503  unsigned index_callbacks_size = ITUI->index_callbacks_size;
504  unsigned index_options = ITUI->index_options;
505  ITUI->result = 1; // init as error.
506
507  if (!TU)
508    return;
509  if (!client_index_callbacks || index_callbacks_size == 0)
510    return;
511
512  CIndexer *CXXIdx = (CIndexer*)TU->CIdx;
513  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
514    setThreadBackgroundPriority();
515
516  IndexerCallbacks CB;
517  memset(&CB, 0, sizeof(CB));
518  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
519                                  ? index_callbacks_size : sizeof(CB);
520  memcpy(&CB, client_index_callbacks, ClientCBSize);
521
522  OwningPtr<IndexingContext> IndexCtx;
523  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
524
525  // Recover resources if we crash before exiting this method.
526  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
527    IndexCtxCleanup(IndexCtx.get());
528
529  OwningPtr<IndexingConsumer> IndexConsumer;
530  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
531
532  // Recover resources if we crash before exiting this method.
533  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
534    IndexConsumerCleanup(IndexConsumer.get());
535
536  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
537  if (!Unit)
538    return;
539
540  FileManager &FileMgr = Unit->getFileManager();
541
542  if (Unit->getOriginalSourceFileName().empty())
543    IndexCtx->enteredMainFile(0);
544  else
545    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
546
547  IndexConsumer->Initialize(Unit->getASTContext());
548
549  indexPreprocessingRecord(*Unit, *IndexCtx);
550  indexTranslationUnit(*Unit, *IndexCtx);
551  indexDiagnostics(TU, *IndexCtx);
552
553  ITUI->result = 0;
554}
555
556//===----------------------------------------------------------------------===//
557// libclang public APIs.
558//===----------------------------------------------------------------------===//
559
560extern "C" {
561
562int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
563  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
564}
565
566const CXIdxObjCContainerDeclInfo *
567clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
568  if (!DInfo)
569    return 0;
570
571  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
572  if (const ObjCContainerDeclInfo *
573        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
574    return &ContInfo->ObjCContDeclInfo;
575
576  return 0;
577}
578
579const CXIdxObjCInterfaceDeclInfo *
580clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
581  if (!DInfo)
582    return 0;
583
584  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
585  if (const ObjCInterfaceDeclInfo *
586        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
587    return &InterInfo->ObjCInterDeclInfo;
588
589  return 0;
590}
591
592const CXIdxObjCCategoryDeclInfo *
593clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
594  if (!DInfo)
595    return 0;
596
597  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
598  if (const ObjCCategoryDeclInfo *
599        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
600    return &CatInfo->ObjCCatDeclInfo;
601
602  return 0;
603}
604
605const CXIdxObjCProtocolRefListInfo *
606clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
607  if (!DInfo)
608    return 0;
609
610  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
611
612  if (const ObjCInterfaceDeclInfo *
613        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
614    return InterInfo->ObjCInterDeclInfo.protocols;
615
616  if (const ObjCProtocolDeclInfo *
617        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
618    return &ProtInfo->ObjCProtoRefListInfo;
619
620  if (const ObjCCategoryDeclInfo *CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
621    return CatInfo->ObjCCatDeclInfo.protocols;
622
623  return 0;
624}
625
626const CXIdxObjCPropertyDeclInfo *
627clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *DInfo) {
628  if (!DInfo)
629    return 0;
630
631  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
632  if (const ObjCPropertyDeclInfo *PropInfo = dyn_cast<ObjCPropertyDeclInfo>(DI))
633    return &PropInfo->ObjCPropDeclInfo;
634
635  return 0;
636}
637
638const CXIdxIBOutletCollectionAttrInfo *
639clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
640  if (!AInfo)
641    return 0;
642
643  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
644  if (const IBOutletCollectionInfo *
645        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
646    return &IBInfo->IBCollInfo;
647
648  return 0;
649}
650
651const CXIdxCXXClassDeclInfo *
652clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
653  if (!DInfo)
654    return 0;
655
656  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
657  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
658    return &ClassInfo->CXXClassInfo;
659
660  return 0;
661}
662
663CXIdxClientContainer
664clang_index_getClientContainer(const CXIdxContainerInfo *info) {
665  if (!info)
666    return 0;
667  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
668  return Container->IndexCtx->getClientContainerForDC(Container->DC);
669}
670
671void clang_index_setClientContainer(const CXIdxContainerInfo *info,
672                                    CXIdxClientContainer client) {
673  if (!info)
674    return;
675  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
676  Container->IndexCtx->addContainerInMap(Container->DC, client);
677}
678
679CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
680  if (!info)
681    return 0;
682  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
683  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
684}
685
686void clang_index_setClientEntity(const CXIdxEntityInfo *info,
687                                 CXIdxClientEntity client) {
688  if (!info)
689    return;
690  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
691  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
692}
693
694CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
695  // For now, CXIndexAction is featureless.
696  return CIdx;
697}
698
699void clang_IndexAction_dispose(CXIndexAction idxAction) {
700  // For now, CXIndexAction is featureless.
701}
702
703int clang_indexSourceFile(CXIndexAction idxAction,
704                          CXClientData client_data,
705                          IndexerCallbacks *index_callbacks,
706                          unsigned index_callbacks_size,
707                          unsigned index_options,
708                          const char *source_filename,
709                          const char * const *command_line_args,
710                          int num_command_line_args,
711                          struct CXUnsavedFile *unsaved_files,
712                          unsigned num_unsaved_files,
713                          CXTranslationUnit *out_TU,
714                          unsigned TU_options) {
715
716  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
717                               index_callbacks_size, index_options,
718                               source_filename, command_line_args,
719                               num_command_line_args, unsaved_files,
720                               num_unsaved_files, out_TU, TU_options, 0 };
721
722  if (getenv("LIBCLANG_NOTHREADS")) {
723    clang_indexSourceFile_Impl(&ITUI);
724    return ITUI.result;
725  }
726
727  llvm::CrashRecoveryContext CRC;
728
729  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
730    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
731    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
732    fprintf(stderr, "  'command_line_args' : [");
733    for (int i = 0; i != num_command_line_args; ++i) {
734      if (i)
735        fprintf(stderr, ", ");
736      fprintf(stderr, "'%s'", command_line_args[i]);
737    }
738    fprintf(stderr, "],\n");
739    fprintf(stderr, "  'unsaved_files' : [");
740    for (unsigned i = 0; i != num_unsaved_files; ++i) {
741      if (i)
742        fprintf(stderr, ", ");
743      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
744              unsaved_files[i].Length);
745    }
746    fprintf(stderr, "],\n");
747    fprintf(stderr, "  'options' : %d,\n", TU_options);
748    fprintf(stderr, "}\n");
749
750    return 1;
751  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
752    if (out_TU)
753      PrintLibclangResourceUsage(*out_TU);
754  }
755
756  return ITUI.result;
757}
758
759int clang_indexTranslationUnit(CXIndexAction idxAction,
760                               CXClientData client_data,
761                               IndexerCallbacks *index_callbacks,
762                               unsigned index_callbacks_size,
763                               unsigned index_options,
764                               CXTranslationUnit TU) {
765
766  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
767                                    index_callbacks_size, index_options, TU,
768                                    0 };
769
770  if (getenv("LIBCLANG_NOTHREADS")) {
771    clang_indexTranslationUnit_Impl(&ITUI);
772    return ITUI.result;
773  }
774
775  llvm::CrashRecoveryContext CRC;
776
777  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
778    fprintf(stderr, "libclang: crash detected during indexing TU\n");
779
780    return 1;
781  }
782
783  return ITUI.result;
784}
785
786void clang_indexLoc_getFileLocation(CXIdxLoc location,
787                                    CXIdxClientFile *indexFile,
788                                    CXFile *file,
789                                    unsigned *line,
790                                    unsigned *column,
791                                    unsigned *offset) {
792  if (indexFile) *indexFile = 0;
793  if (file)   *file = 0;
794  if (line)   *line = 0;
795  if (column) *column = 0;
796  if (offset) *offset = 0;
797
798  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
799  if (!location.ptr_data[0] || Loc.isInvalid())
800    return;
801
802  IndexingContext &IndexCtx =
803      *static_cast<IndexingContext*>(location.ptr_data[0]);
804  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
805}
806
807CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
808  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
809  if (!location.ptr_data[0] || Loc.isInvalid())
810    return clang_getNullLocation();
811
812  IndexingContext &IndexCtx =
813      *static_cast<IndexingContext*>(location.ptr_data[0]);
814  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
815}
816
817} // end: extern "C"
818
819