Indexing.cpp revision 3da76bfbd24b2747ceb72d1918bbbe3123dac841 
1//===- CIndexHigh.cpp - Higher level API functions ------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "IndexingContext.h"
11#include "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                                  CharSourceRange FilenameRange,
72                                  const FileEntry *File,
73                                  StringRef SearchPath,
74                                  StringRef RelativePath,
75                                  const Module *Imported) {
76    if (Imported) {
77      // We handle implicit imports via ImportDecls.
78      return;
79    }
80
81    bool isImport = (IncludeTok.is(tok::identifier) &&
82            IncludeTok.getIdentifierInfo()->getPPKeywordID() == tok::pp_import);
83    IndexCtx.ppIncludedFile(HashLoc, FileName, File, isImport, IsAngled);
84  }
85
86  /// MacroDefined - This hook is called whenever a macro definition is seen.
87  virtual void MacroDefined(const Token &Id, const MacroInfo *MI) {
88  }
89
90  /// MacroUndefined - This hook is called whenever a macro #undef is seen.
91  /// MI is released immediately following this callback.
92  virtual void MacroUndefined(const Token &MacroNameTok, const MacroInfo *MI) {
93  }
94
95  /// MacroExpands - This is called by when a macro invocation is found.
96  virtual void MacroExpands(const Token &MacroNameTok, const MacroInfo* MI,
97                            SourceRange Range) {
98  }
99
100  /// SourceRangeSkipped - This hook is called when a source range is skipped.
101  /// \param Range The SourceRange that was skipped. The range begins at the
102  /// #if/#else directive and ends after the #endif/#else directive.
103  virtual void SourceRangeSkipped(SourceRange Range) {
104  }
105};
106
107//===----------------------------------------------------------------------===//
108// IndexingConsumer
109//===----------------------------------------------------------------------===//
110
111class IndexingConsumer : public ASTConsumer {
112  IndexingContext &IndexCtx;
113
114public:
115  explicit IndexingConsumer(IndexingContext &indexCtx)
116    : IndexCtx(indexCtx) { }
117
118  // ASTConsumer Implementation
119
120  virtual void Initialize(ASTContext &Context) {
121    IndexCtx.setASTContext(Context);
122    IndexCtx.startedTranslationUnit();
123  }
124
125  virtual void HandleTranslationUnit(ASTContext &Ctx) {
126  }
127
128  virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
129    IndexCtx.indexDeclGroupRef(DG);
130    return !IndexCtx.shouldAbort();
131  }
132
133  /// \brief Handle the specified top-level declaration that occurred inside
134  /// and ObjC container.
135  virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
136    // They will be handled after the interface is seen first.
137    IndexCtx.addTUDeclInObjCContainer(D);
138  }
139
140  /// \brief This is called by the AST reader when deserializing things.
141  /// The default implementation forwards to HandleTopLevelDecl but we don't
142  /// care about them when indexing, so have an empty definition.
143  virtual void HandleInterestingDecl(DeclGroupRef D) {}
144
145  virtual void HandleTagDeclDefinition(TagDecl *D) {
146    if (!IndexCtx.shouldIndexImplicitTemplateInsts())
147      return;
148
149    if (IndexCtx.isTemplateImplicitInstantiation(D))
150      IndexCtx.indexDecl(D);
151  }
152
153  virtual void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) {
154    if (!IndexCtx.shouldIndexImplicitTemplateInsts())
155      return;
156
157    IndexCtx.indexDecl(D);
158  }
159};
160
161//===----------------------------------------------------------------------===//
162// CaptureDiagnosticConsumer
163//===----------------------------------------------------------------------===//
164
165class CaptureDiagnosticConsumer : public DiagnosticConsumer {
166  SmallVector<StoredDiagnostic, 4> Errors;
167public:
168
169  virtual void HandleDiagnostic(DiagnosticsEngine::Level level,
170                                const Diagnostic &Info) {
171    if (level >= DiagnosticsEngine::Error)
172      Errors.push_back(StoredDiagnostic(level, Info));
173  }
174
175  DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
176    return new IgnoringDiagConsumer();
177  }
178};
179
180//===----------------------------------------------------------------------===//
181// IndexingFrontendAction
182//===----------------------------------------------------------------------===//
183
184class IndexingFrontendAction : public ASTFrontendAction {
185  IndexingContext IndexCtx;
186  CXTranslationUnit CXTU;
187
188public:
189  IndexingFrontendAction(CXClientData clientData,
190                         IndexerCallbacks &indexCallbacks,
191                         unsigned indexOptions,
192                         CXTranslationUnit cxTU)
193    : IndexCtx(clientData, indexCallbacks, indexOptions, cxTU),
194      CXTU(cxTU), EnablePPDetailedRecordForModules(false) { }
195
196  bool EnablePPDetailedRecordForModules;
197
198  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
199                                         StringRef InFile) {
200    PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
201
202    // We usually disable the preprocessing record for indexing even if the
203    // original preprocessing options had it enabled. Now that the indexing
204    // Preprocessor has been created (without a preprocessing record), re-enable
205    // the option in case modules are enabled, so that the detailed record
206    // option can be propagated when the module file is generated.
207    if (CI.getLangOpts().Modules && EnablePPDetailedRecordForModules)
208      PPOpts.DetailedRecord = true;
209
210    if (!PPOpts.ImplicitPCHInclude.empty()) {
211      IndexCtx.importedPCH(
212                        CI.getFileManager().getFile(PPOpts.ImplicitPCHInclude));
213    }
214
215    IndexCtx.setASTContext(CI.getASTContext());
216    Preprocessor &PP = CI.getPreprocessor();
217    PP.addPPCallbacks(new IndexPPCallbacks(PP, IndexCtx));
218    IndexCtx.setPreprocessor(PP);
219    return new IndexingConsumer(IndexCtx);
220  }
221
222  virtual void EndSourceFileAction() {
223    indexDiagnostics(CXTU, IndexCtx);
224  }
225
226  virtual TranslationUnitKind getTranslationUnitKind() {
227    if (IndexCtx.shouldIndexImplicitTemplateInsts())
228      return TU_Complete;
229    else
230      return TU_Prefix;
231  }
232  virtual bool hasCodeCompletionSupport() const { return false; }
233};
234
235//===----------------------------------------------------------------------===//
236// clang_indexSourceFileUnit Implementation
237//===----------------------------------------------------------------------===//
238
239struct IndexSourceFileInfo {
240  CXIndexAction idxAction;
241  CXClientData client_data;
242  IndexerCallbacks *index_callbacks;
243  unsigned index_callbacks_size;
244  unsigned index_options;
245  const char *source_filename;
246  const char *const *command_line_args;
247  int num_command_line_args;
248  struct CXUnsavedFile *unsaved_files;
249  unsigned num_unsaved_files;
250  CXTranslationUnit *out_TU;
251  unsigned TU_options;
252  int result;
253};
254
255struct MemBufferOwner {
256  SmallVector<const llvm::MemoryBuffer *, 8> Buffers;
257
258  ~MemBufferOwner() {
259    for (SmallVectorImpl<const llvm::MemoryBuffer *>::iterator
260           I = Buffers.begin(), E = Buffers.end(); I != E; ++I)
261      delete *I;
262  }
263};
264
265} // anonymous namespace
266
267static void clang_indexSourceFile_Impl(void *UserData) {
268  IndexSourceFileInfo *ITUI =
269    static_cast<IndexSourceFileInfo*>(UserData);
270  CXIndex CIdx = (CXIndex)ITUI->idxAction;
271  CXClientData client_data = ITUI->client_data;
272  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
273  unsigned index_callbacks_size = ITUI->index_callbacks_size;
274  unsigned index_options = ITUI->index_options;
275  const char *source_filename = ITUI->source_filename;
276  const char * const *command_line_args = ITUI->command_line_args;
277  int num_command_line_args = ITUI->num_command_line_args;
278  struct CXUnsavedFile *unsaved_files = ITUI->unsaved_files;
279  unsigned num_unsaved_files = ITUI->num_unsaved_files;
280  CXTranslationUnit *out_TU  = ITUI->out_TU;
281  unsigned TU_options = ITUI->TU_options;
282  ITUI->result = 1; // init as error.
283
284  if (out_TU)
285    *out_TU = 0;
286  bool requestedToGetTU = (out_TU != 0);
287
288  if (!CIdx)
289    return;
290  if (!client_index_callbacks || index_callbacks_size == 0)
291    return;
292
293  IndexerCallbacks CB;
294  memset(&CB, 0, sizeof(CB));
295  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
296                                  ? index_callbacks_size : sizeof(CB);
297  memcpy(&CB, client_index_callbacks, ClientCBSize);
298
299  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
300
301  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
302    setThreadBackgroundPriority();
303
304  CaptureDiagnosticConsumer *CaptureDiag = new CaptureDiagnosticConsumer();
305
306  // Configure the diagnostics.
307  DiagnosticOptions DiagOpts;
308  IntrusiveRefCntPtr<DiagnosticsEngine>
309    Diags(CompilerInstance::createDiagnostics(DiagOpts, num_command_line_args,
310                                                command_line_args,
311                                                CaptureDiag,
312                                                /*ShouldOwnClient=*/true,
313                                                /*ShouldCloneClient=*/false));
314
315  // Recover resources if we crash before exiting this function.
316  llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
317    llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
318    DiagCleanup(Diags.getPtr());
319
320  OwningPtr<std::vector<const char *> >
321    Args(new std::vector<const char*>());
322
323  // Recover resources if we crash before exiting this method.
324  llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
325    ArgsCleanup(Args.get());
326
327  Args->insert(Args->end(), command_line_args,
328               command_line_args + num_command_line_args);
329
330  // The 'source_filename' argument is optional.  If the caller does not
331  // specify it then it is assumed that the source file is specified
332  // in the actual argument list.
333  // Put the source file after command_line_args otherwise if '-x' flag is
334  // present it will be unused.
335  if (source_filename)
336    Args->push_back(source_filename);
337
338  IntrusiveRefCntPtr<CompilerInvocation>
339    CInvok(createInvocationFromCommandLine(*Args, Diags));
340
341  if (!CInvok)
342    return;
343
344  // Recover resources if we crash before exiting this function.
345  llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
346    llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
347    CInvokCleanup(CInvok.getPtr());
348
349  if (CInvok->getFrontendOpts().Inputs.empty())
350    return;
351
352  OwningPtr<MemBufferOwner> BufOwner(new MemBufferOwner());
353
354  // Recover resources if we crash before exiting this method.
355  llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner>
356    BufOwnerCleanup(BufOwner.get());
357
358  for (unsigned I = 0; I != num_unsaved_files; ++I) {
359    StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
360    const llvm::MemoryBuffer *Buffer
361      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
362    CInvok->getPreprocessorOpts().addRemappedFile(unsaved_files[I].Filename, Buffer);
363    BufOwner->Buffers.push_back(Buffer);
364  }
365
366  // Since libclang is primarily used by batch tools dealing with
367  // (often very broken) source code, where spell-checking can have a
368  // significant negative impact on performance (particularly when
369  // precompiled headers are involved), we disable it.
370  CInvok->getLangOpts()->SpellChecking = false;
371
372  if (index_options & CXIndexOpt_SuppressWarnings)
373    CInvok->getDiagnosticOpts().IgnoreWarnings = true;
374
375  ASTUnit *Unit = ASTUnit::create(CInvok.getPtr(), Diags,
376                                  /*CaptureDiagnostics=*/true,
377                                  /*UserFilesAreVolatile=*/true);
378  OwningPtr<CXTUOwner> CXTU(new CXTUOwner(MakeCXTranslationUnit(CXXIdx, Unit)));
379
380  // Recover resources if we crash before exiting this method.
381  llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
382    CXTUCleanup(CXTU.get());
383
384  OwningPtr<IndexingFrontendAction> IndexAction;
385  IndexAction.reset(new IndexingFrontendAction(client_data, CB,
386                                               index_options, CXTU->getTU()));
387
388  // Recover resources if we crash before exiting this method.
389  llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
390    IndexActionCleanup(IndexAction.get());
391
392  bool Persistent = requestedToGetTU;
393  bool OnlyLocalDecls = false;
394  bool PrecompilePreamble = false;
395  bool CacheCodeCompletionResults = false;
396  PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
397  PPOpts.AllowPCHWithCompilerErrors = true;
398
399  if (requestedToGetTU) {
400    OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
401    PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
402    // FIXME: Add a flag for modules.
403    CacheCodeCompletionResults
404      = TU_options & CXTranslationUnit_CacheCompletionResults;
405    if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
406      PPOpts.DetailedRecord = true;
407    }
408  }
409
410  IndexAction->EnablePPDetailedRecordForModules
411    = PPOpts.DetailedRecord ||
412      (TU_options & CXTranslationUnit_DetailedPreprocessingRecord);
413
414  if (!requestedToGetTU)
415    PPOpts.DetailedRecord = false;
416
417  DiagnosticErrorTrap DiagTrap(*Diags);
418  bool Success = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
419                                                       IndexAction.get(),
420                                                       Unit,
421                                                       Persistent,
422                                                CXXIdx->getClangResourcesPath(),
423                                                       OnlyLocalDecls,
424                                                    /*CaptureDiagnostics=*/true,
425                                                       PrecompilePreamble,
426                                                    CacheCodeCompletionResults,
427                                 /*IncludeBriefCommentsInCodeCompletion=*/false,
428                                                 /*UserFilesAreVolatile=*/true);
429  if (DiagTrap.hasErrorOccurred() && CXXIdx->getDisplayDiagnostics())
430    printDiagsToStderr(Unit);
431
432  if (!Success)
433    return;
434
435  if (out_TU)
436    *out_TU = CXTU->takeTU();
437
438  ITUI->result = 0; // success.
439}
440
441//===----------------------------------------------------------------------===//
442// clang_indexTranslationUnit Implementation
443//===----------------------------------------------------------------------===//
444
445namespace {
446
447struct IndexTranslationUnitInfo {
448  CXIndexAction idxAction;
449  CXClientData client_data;
450  IndexerCallbacks *index_callbacks;
451  unsigned index_callbacks_size;
452  unsigned index_options;
453  CXTranslationUnit TU;
454  int result;
455};
456
457} // anonymous namespace
458
459static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
460  Preprocessor &PP = Unit.getPreprocessor();
461  if (!PP.getPreprocessingRecord())
462    return;
463
464  // FIXME: Only deserialize inclusion directives.
465
466  PreprocessingRecord::iterator I, E;
467  llvm::tie(I, E) = Unit.getLocalPreprocessingEntities();
468
469  for (; I != E; ++I) {
470    PreprocessedEntity *PPE = *I;
471
472    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
473      if (!ID->importedModule())
474        IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(),ID->getFileName(),
475                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
476                     !ID->wasInQuotes());
477    }
478  }
479}
480
481static bool topLevelDeclVisitor(void *context, const Decl *D) {
482  IndexingContext &IdxCtx = *static_cast<IndexingContext*>(context);
483  IdxCtx.indexTopLevelDecl(D);
484  if (IdxCtx.shouldAbort())
485    return false;
486  return true;
487}
488
489static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
490  Unit.visitLocalTopLevelDecls(&IdxCtx, topLevelDeclVisitor);
491}
492
493static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
494  if (!IdxCtx.hasDiagnosticCallback())
495    return;
496
497  CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
498  IdxCtx.handleDiagnosticSet(DiagSet);
499}
500
501static void clang_indexTranslationUnit_Impl(void *UserData) {
502  IndexTranslationUnitInfo *ITUI =
503    static_cast<IndexTranslationUnitInfo*>(UserData);
504  CXTranslationUnit TU = ITUI->TU;
505  CXClientData client_data = ITUI->client_data;
506  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
507  unsigned index_callbacks_size = ITUI->index_callbacks_size;
508  unsigned index_options = ITUI->index_options;
509  ITUI->result = 1; // init as error.
510
511  if (!TU)
512    return;
513  if (!client_index_callbacks || index_callbacks_size == 0)
514    return;
515
516  CIndexer *CXXIdx = (CIndexer*)TU->CIdx;
517  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
518    setThreadBackgroundPriority();
519
520  IndexerCallbacks CB;
521  memset(&CB, 0, sizeof(CB));
522  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
523                                  ? index_callbacks_size : sizeof(CB);
524  memcpy(&CB, client_index_callbacks, ClientCBSize);
525
526  OwningPtr<IndexingContext> IndexCtx;
527  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
528
529  // Recover resources if we crash before exiting this method.
530  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
531    IndexCtxCleanup(IndexCtx.get());
532
533  OwningPtr<IndexingConsumer> IndexConsumer;
534  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
535
536  // Recover resources if we crash before exiting this method.
537  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
538    IndexConsumerCleanup(IndexConsumer.get());
539
540  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
541  if (!Unit)
542    return;
543
544  ASTUnit::ConcurrencyCheck Check(*Unit);
545
546  if (const FileEntry *PCHFile = Unit->getPCHFile())
547    IndexCtx->importedPCH(PCHFile);
548
549  FileManager &FileMgr = Unit->getFileManager();
550
551  if (Unit->getOriginalSourceFileName().empty())
552    IndexCtx->enteredMainFile(0);
553  else
554    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
555
556  IndexConsumer->Initialize(Unit->getASTContext());
557
558  indexPreprocessingRecord(*Unit, *IndexCtx);
559  indexTranslationUnit(*Unit, *IndexCtx);
560  indexDiagnostics(TU, *IndexCtx);
561
562  ITUI->result = 0;
563}
564
565//===----------------------------------------------------------------------===//
566// libclang public APIs.
567//===----------------------------------------------------------------------===//
568
569extern "C" {
570
571int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
572  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
573}
574
575const CXIdxObjCContainerDeclInfo *
576clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
577  if (!DInfo)
578    return 0;
579
580  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
581  if (const ObjCContainerDeclInfo *
582        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
583    return &ContInfo->ObjCContDeclInfo;
584
585  return 0;
586}
587
588const CXIdxObjCInterfaceDeclInfo *
589clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
590  if (!DInfo)
591    return 0;
592
593  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
594  if (const ObjCInterfaceDeclInfo *
595        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
596    return &InterInfo->ObjCInterDeclInfo;
597
598  return 0;
599}
600
601const CXIdxObjCCategoryDeclInfo *
602clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
603  if (!DInfo)
604    return 0;
605
606  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
607  if (const ObjCCategoryDeclInfo *
608        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
609    return &CatInfo->ObjCCatDeclInfo;
610
611  return 0;
612}
613
614const CXIdxObjCProtocolRefListInfo *
615clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
616  if (!DInfo)
617    return 0;
618
619  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
620
621  if (const ObjCInterfaceDeclInfo *
622        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
623    return InterInfo->ObjCInterDeclInfo.protocols;
624
625  if (const ObjCProtocolDeclInfo *
626        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
627    return &ProtInfo->ObjCProtoRefListInfo;
628
629  if (const ObjCCategoryDeclInfo *CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
630    return CatInfo->ObjCCatDeclInfo.protocols;
631
632  return 0;
633}
634
635const CXIdxObjCPropertyDeclInfo *
636clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *DInfo) {
637  if (!DInfo)
638    return 0;
639
640  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
641  if (const ObjCPropertyDeclInfo *PropInfo = dyn_cast<ObjCPropertyDeclInfo>(DI))
642    return &PropInfo->ObjCPropDeclInfo;
643
644  return 0;
645}
646
647const CXIdxIBOutletCollectionAttrInfo *
648clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
649  if (!AInfo)
650    return 0;
651
652  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
653  if (const IBOutletCollectionInfo *
654        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
655    return &IBInfo->IBCollInfo;
656
657  return 0;
658}
659
660const CXIdxCXXClassDeclInfo *
661clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
662  if (!DInfo)
663    return 0;
664
665  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
666  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
667    return &ClassInfo->CXXClassInfo;
668
669  return 0;
670}
671
672CXIdxClientContainer
673clang_index_getClientContainer(const CXIdxContainerInfo *info) {
674  if (!info)
675    return 0;
676  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
677  return Container->IndexCtx->getClientContainerForDC(Container->DC);
678}
679
680void clang_index_setClientContainer(const CXIdxContainerInfo *info,
681                                    CXIdxClientContainer client) {
682  if (!info)
683    return;
684  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
685  Container->IndexCtx->addContainerInMap(Container->DC, client);
686}
687
688CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
689  if (!info)
690    return 0;
691  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
692  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
693}
694
695void clang_index_setClientEntity(const CXIdxEntityInfo *info,
696                                 CXIdxClientEntity client) {
697  if (!info)
698    return;
699  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
700  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
701}
702
703CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
704  // For now, CXIndexAction is featureless.
705  return CIdx;
706}
707
708void clang_IndexAction_dispose(CXIndexAction idxAction) {
709  // For now, CXIndexAction is featureless.
710}
711
712int clang_indexSourceFile(CXIndexAction idxAction,
713                          CXClientData client_data,
714                          IndexerCallbacks *index_callbacks,
715                          unsigned index_callbacks_size,
716                          unsigned index_options,
717                          const char *source_filename,
718                          const char * const *command_line_args,
719                          int num_command_line_args,
720                          struct CXUnsavedFile *unsaved_files,
721                          unsigned num_unsaved_files,
722                          CXTranslationUnit *out_TU,
723                          unsigned TU_options) {
724
725  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
726                               index_callbacks_size, index_options,
727                               source_filename, command_line_args,
728                               num_command_line_args, unsaved_files,
729                               num_unsaved_files, out_TU, TU_options, 0 };
730
731  if (getenv("LIBCLANG_NOTHREADS")) {
732    clang_indexSourceFile_Impl(&ITUI);
733    return ITUI.result;
734  }
735
736  llvm::CrashRecoveryContext CRC;
737
738  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
739    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
740    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
741    fprintf(stderr, "  'command_line_args' : [");
742    for (int i = 0; i != num_command_line_args; ++i) {
743      if (i)
744        fprintf(stderr, ", ");
745      fprintf(stderr, "'%s'", command_line_args[i]);
746    }
747    fprintf(stderr, "],\n");
748    fprintf(stderr, "  'unsaved_files' : [");
749    for (unsigned i = 0; i != num_unsaved_files; ++i) {
750      if (i)
751        fprintf(stderr, ", ");
752      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
753              unsaved_files[i].Length);
754    }
755    fprintf(stderr, "],\n");
756    fprintf(stderr, "  'options' : %d,\n", TU_options);
757    fprintf(stderr, "}\n");
758
759    return 1;
760  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
761    if (out_TU)
762      PrintLibclangResourceUsage(*out_TU);
763  }
764
765  return ITUI.result;
766}
767
768int clang_indexTranslationUnit(CXIndexAction idxAction,
769                               CXClientData client_data,
770                               IndexerCallbacks *index_callbacks,
771                               unsigned index_callbacks_size,
772                               unsigned index_options,
773                               CXTranslationUnit TU) {
774
775  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
776                                    index_callbacks_size, index_options, TU,
777                                    0 };
778
779  if (getenv("LIBCLANG_NOTHREADS")) {
780    clang_indexTranslationUnit_Impl(&ITUI);
781    return ITUI.result;
782  }
783
784  llvm::CrashRecoveryContext CRC;
785
786  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
787    fprintf(stderr, "libclang: crash detected during indexing TU\n");
788
789    return 1;
790  }
791
792  return ITUI.result;
793}
794
795void clang_indexLoc_getFileLocation(CXIdxLoc location,
796                                    CXIdxClientFile *indexFile,
797                                    CXFile *file,
798                                    unsigned *line,
799                                    unsigned *column,
800                                    unsigned *offset) {
801  if (indexFile) *indexFile = 0;
802  if (file)   *file = 0;
803  if (line)   *line = 0;
804  if (column) *column = 0;
805  if (offset) *offset = 0;
806
807  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
808  if (!location.ptr_data[0] || Loc.isInvalid())
809    return;
810
811  IndexingContext &IndexCtx =
812      *static_cast<IndexingContext*>(location.ptr_data[0]);
813  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
814}
815
816CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
817  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
818  if (!location.ptr_data[0] || Loc.isInvalid())
819    return clang_getNullLocation();
820
821  IndexingContext &IndexCtx =
822      *static_cast<IndexingContext*>(location.ptr_data[0]);
823  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
824}
825
826} // end: extern "C"
827
828