Indexing.cpp revision f8afcffe6a0213760b64c211812b1750e1e1e967 
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    bool isImport = (IncludeTok.is(tok::identifier) &&
77            IncludeTok.getIdentifierInfo()->getPPKeywordID() == tok::pp_import);
78    IndexCtx.ppIncludedFile(HashLoc, FileName, File, isImport, IsAngled);
79  }
80
81  /// MacroDefined - This hook is called whenever a macro definition is seen.
82  virtual void MacroDefined(const Token &Id, const MacroInfo *MI) {
83  }
84
85  /// MacroUndefined - This hook is called whenever a macro #undef is seen.
86  /// MI is released immediately following this callback.
87  virtual void MacroUndefined(const Token &MacroNameTok, const MacroInfo *MI) {
88  }
89
90  /// MacroExpands - This is called by when a macro invocation is found.
91  virtual void MacroExpands(const Token &MacroNameTok, const MacroInfo* MI,
92                            SourceRange Range) {
93  }
94
95  /// SourceRangeSkipped - This hook is called when a source range is skipped.
96  /// \param Range The SourceRange that was skipped. The range begins at the
97  /// #if/#else directive and ends after the #endif/#else directive.
98  virtual void SourceRangeSkipped(SourceRange Range) {
99  }
100};
101
102//===----------------------------------------------------------------------===//
103// IndexingConsumer
104//===----------------------------------------------------------------------===//
105
106class IndexingConsumer : public ASTConsumer {
107  IndexingContext &IndexCtx;
108
109public:
110  explicit IndexingConsumer(IndexingContext &indexCtx)
111    : IndexCtx(indexCtx) { }
112
113  // ASTConsumer Implementation
114
115  virtual void Initialize(ASTContext &Context) {
116    IndexCtx.setASTContext(Context);
117    IndexCtx.startedTranslationUnit();
118  }
119
120  virtual void HandleTranslationUnit(ASTContext &Ctx) {
121  }
122
123  virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
124    IndexCtx.indexDeclGroupRef(DG);
125    return !IndexCtx.shouldAbort();
126  }
127
128  /// \brief Handle the specified top-level declaration that occurred inside
129  /// and ObjC container.
130  virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
131    // They will be handled after the interface is seen first.
132    IndexCtx.addTUDeclInObjCContainer(D);
133  }
134
135  /// \brief This is called by the AST reader when deserializing things.
136  /// The default implementation forwards to HandleTopLevelDecl but we don't
137  /// care about them when indexing, so have an empty definition.
138  virtual void HandleInterestingDecl(DeclGroupRef D) {}
139
140  virtual void HandleTagDeclDefinition(TagDecl *D) {
141    if (!IndexCtx.shouldIndexImplicitTemplateInsts())
142      return;
143
144    if (IndexCtx.isTemplateImplicitInstantiation(D))
145      IndexCtx.indexDecl(D);
146  }
147
148  virtual void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) {
149    if (!IndexCtx.shouldIndexImplicitTemplateInsts())
150      return;
151
152    IndexCtx.indexDecl(D);
153  }
154};
155
156//===----------------------------------------------------------------------===//
157// CaptureDiagnosticConsumer
158//===----------------------------------------------------------------------===//
159
160class CaptureDiagnosticConsumer : public DiagnosticConsumer {
161  SmallVector<StoredDiagnostic, 4> Errors;
162public:
163
164  virtual void HandleDiagnostic(DiagnosticsEngine::Level level,
165                                const Diagnostic &Info) {
166    if (level >= DiagnosticsEngine::Error)
167      Errors.push_back(StoredDiagnostic(level, Info));
168  }
169
170  DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
171    return new IgnoringDiagConsumer();
172  }
173};
174
175//===----------------------------------------------------------------------===//
176// IndexingFrontendAction
177//===----------------------------------------------------------------------===//
178
179class IndexingFrontendAction : public ASTFrontendAction {
180  IndexingContext IndexCtx;
181  CXTranslationUnit CXTU;
182
183public:
184  IndexingFrontendAction(CXClientData clientData,
185                         IndexerCallbacks &indexCallbacks,
186                         unsigned indexOptions,
187                         CXTranslationUnit cxTU)
188    : IndexCtx(clientData, indexCallbacks, indexOptions, cxTU),
189      CXTU(cxTU) { }
190
191  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
192                                         StringRef InFile) {
193    IndexCtx.setASTContext(CI.getASTContext());
194    Preprocessor &PP = CI.getPreprocessor();
195    PP.addPPCallbacks(new IndexPPCallbacks(PP, IndexCtx));
196    IndexCtx.setPreprocessor(PP);
197    return new IndexingConsumer(IndexCtx);
198  }
199
200  virtual void EndSourceFileAction() {
201    indexDiagnostics(CXTU, IndexCtx);
202  }
203
204  virtual TranslationUnitKind getTranslationUnitKind() {
205    if (IndexCtx.shouldIndexImplicitTemplateInsts())
206      return TU_Complete;
207    else
208      return TU_Prefix;
209  }
210  virtual bool hasCodeCompletionSupport() const { return false; }
211};
212
213//===----------------------------------------------------------------------===//
214// clang_indexSourceFileUnit Implementation
215//===----------------------------------------------------------------------===//
216
217struct IndexSourceFileInfo {
218  CXIndexAction idxAction;
219  CXClientData client_data;
220  IndexerCallbacks *index_callbacks;
221  unsigned index_callbacks_size;
222  unsigned index_options;
223  const char *source_filename;
224  const char *const *command_line_args;
225  int num_command_line_args;
226  struct CXUnsavedFile *unsaved_files;
227  unsigned num_unsaved_files;
228  CXTranslationUnit *out_TU;
229  unsigned TU_options;
230  int result;
231};
232
233struct MemBufferOwner {
234  SmallVector<const llvm::MemoryBuffer *, 8> Buffers;
235
236  ~MemBufferOwner() {
237    for (SmallVectorImpl<const llvm::MemoryBuffer *>::iterator
238           I = Buffers.begin(), E = Buffers.end(); I != E; ++I)
239      delete *I;
240  }
241};
242
243} // anonymous namespace
244
245static void clang_indexSourceFile_Impl(void *UserData) {
246  IndexSourceFileInfo *ITUI =
247    static_cast<IndexSourceFileInfo*>(UserData);
248  CXIndex CIdx = (CXIndex)ITUI->idxAction;
249  CXClientData client_data = ITUI->client_data;
250  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
251  unsigned index_callbacks_size = ITUI->index_callbacks_size;
252  unsigned index_options = ITUI->index_options;
253  const char *source_filename = ITUI->source_filename;
254  const char * const *command_line_args = ITUI->command_line_args;
255  int num_command_line_args = ITUI->num_command_line_args;
256  struct CXUnsavedFile *unsaved_files = ITUI->unsaved_files;
257  unsigned num_unsaved_files = ITUI->num_unsaved_files;
258  CXTranslationUnit *out_TU  = ITUI->out_TU;
259  unsigned TU_options = ITUI->TU_options;
260  ITUI->result = 1; // init as error.
261
262  if (out_TU)
263    *out_TU = 0;
264  bool requestedToGetTU = (out_TU != 0);
265
266  if (!CIdx)
267    return;
268  if (!client_index_callbacks || index_callbacks_size == 0)
269    return;
270
271  IndexerCallbacks CB;
272  memset(&CB, 0, sizeof(CB));
273  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
274                                  ? index_callbacks_size : sizeof(CB);
275  memcpy(&CB, client_index_callbacks, ClientCBSize);
276
277  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
278
279  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
280    setThreadBackgroundPriority();
281
282  CaptureDiagnosticConsumer *CaptureDiag = new CaptureDiagnosticConsumer();
283
284  // Configure the diagnostics.
285  DiagnosticOptions DiagOpts;
286  IntrusiveRefCntPtr<DiagnosticsEngine>
287    Diags(CompilerInstance::createDiagnostics(DiagOpts, num_command_line_args,
288                                                command_line_args,
289                                                CaptureDiag,
290                                                /*ShouldOwnClient=*/true,
291                                                /*ShouldCloneClient=*/false));
292
293  // Recover resources if we crash before exiting this function.
294  llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
295    llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
296    DiagCleanup(Diags.getPtr());
297
298  OwningPtr<std::vector<const char *> >
299    Args(new std::vector<const char*>());
300
301  // Recover resources if we crash before exiting this method.
302  llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
303    ArgsCleanup(Args.get());
304
305  Args->insert(Args->end(), command_line_args,
306               command_line_args + num_command_line_args);
307
308  // The 'source_filename' argument is optional.  If the caller does not
309  // specify it then it is assumed that the source file is specified
310  // in the actual argument list.
311  // Put the source file after command_line_args otherwise if '-x' flag is
312  // present it will be unused.
313  if (source_filename)
314    Args->push_back(source_filename);
315
316  IntrusiveRefCntPtr<CompilerInvocation>
317    CInvok(createInvocationFromCommandLine(*Args, Diags));
318
319  if (!CInvok)
320    return;
321
322  // Recover resources if we crash before exiting this function.
323  llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
324    llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
325    CInvokCleanup(CInvok.getPtr());
326
327  if (CInvok->getFrontendOpts().Inputs.empty())
328    return;
329
330  OwningPtr<MemBufferOwner> BufOwner(new MemBufferOwner());
331
332  // Recover resources if we crash before exiting this method.
333  llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner>
334    BufOwnerCleanup(BufOwner.get());
335
336  for (unsigned I = 0; I != num_unsaved_files; ++I) {
337    StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
338    const llvm::MemoryBuffer *Buffer
339      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
340    CInvok->getPreprocessorOpts().addRemappedFile(unsaved_files[I].Filename, Buffer);
341    BufOwner->Buffers.push_back(Buffer);
342  }
343
344  // Since libclang is primarily used by batch tools dealing with
345  // (often very broken) source code, where spell-checking can have a
346  // significant negative impact on performance (particularly when
347  // precompiled headers are involved), we disable it.
348  CInvok->getLangOpts()->SpellChecking = false;
349
350  if (!requestedToGetTU)
351    CInvok->getPreprocessorOpts().DetailedRecord = false;
352
353  if (index_options & CXIndexOpt_SuppressWarnings)
354    CInvok->getDiagnosticOpts().IgnoreWarnings = true;
355
356  ASTUnit *Unit = ASTUnit::create(CInvok.getPtr(), Diags,
357                                  /*CaptureDiagnostics=*/true,
358                                  /*UserFilesAreVolatile=*/true);
359  OwningPtr<CXTUOwner> CXTU(new CXTUOwner(MakeCXTranslationUnit(CXXIdx, Unit)));
360
361  // Recover resources if we crash before exiting this method.
362  llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
363    CXTUCleanup(CXTU.get());
364
365  OwningPtr<IndexingFrontendAction> IndexAction;
366  IndexAction.reset(new IndexingFrontendAction(client_data, CB,
367                                               index_options, CXTU->getTU()));
368
369  // Recover resources if we crash before exiting this method.
370  llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
371    IndexActionCleanup(IndexAction.get());
372
373  bool Persistent = requestedToGetTU;
374  bool OnlyLocalDecls = false;
375  bool PrecompilePreamble = false;
376  bool CacheCodeCompletionResults = false;
377  PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
378  PPOpts.DetailedRecord = false;
379  PPOpts.AllowPCHWithCompilerErrors = true;
380
381  if (requestedToGetTU) {
382    OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
383    PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
384    // FIXME: Add a flag for modules.
385    CacheCodeCompletionResults
386      = TU_options & CXTranslationUnit_CacheCompletionResults;
387    if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
388      PPOpts.DetailedRecord = true;
389    }
390  }
391
392  DiagnosticErrorTrap DiagTrap(*Diags);
393  bool Success = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
394                                                       IndexAction.get(),
395                                                       Unit,
396                                                       Persistent,
397                                                CXXIdx->getClangResourcesPath(),
398                                                       OnlyLocalDecls,
399                                                    /*CaptureDiagnostics=*/true,
400                                                       PrecompilePreamble,
401                                                    CacheCodeCompletionResults,
402                                 /*IncludeBriefCommentsInCodeCompletion=*/false,
403                                                 /*UserFilesAreVolatile=*/true);
404  if (DiagTrap.hasErrorOccurred() && CXXIdx->getDisplayDiagnostics())
405    printDiagsToStderr(Unit);
406
407  if (!Success)
408    return;
409
410  if (out_TU)
411    *out_TU = CXTU->takeTU();
412
413  ITUI->result = 0; // success.
414}
415
416//===----------------------------------------------------------------------===//
417// clang_indexTranslationUnit Implementation
418//===----------------------------------------------------------------------===//
419
420namespace {
421
422struct IndexTranslationUnitInfo {
423  CXIndexAction idxAction;
424  CXClientData client_data;
425  IndexerCallbacks *index_callbacks;
426  unsigned index_callbacks_size;
427  unsigned index_options;
428  CXTranslationUnit TU;
429  int result;
430};
431
432} // anonymous namespace
433
434static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
435  Preprocessor &PP = Unit.getPreprocessor();
436  if (!PP.getPreprocessingRecord())
437    return;
438
439  PreprocessingRecord &PPRec = *PP.getPreprocessingRecord();
440
441  // FIXME: Only deserialize inclusion directives.
442  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
443  // that it depends on.
444
445  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
446  PreprocessingRecord::iterator I, E;
447  if (OnlyLocal) {
448    I = PPRec.local_begin();
449    E = PPRec.local_end();
450  } else {
451    I = PPRec.begin();
452    E = PPRec.end();
453  }
454
455  for (; I != E; ++I) {
456    PreprocessedEntity *PPE = *I;
457
458    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
459      IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(), ID->getFileName(),
460                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
461                     !ID->wasInQuotes());
462    }
463  }
464}
465
466static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
467  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
468  // that it depends on.
469
470  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
471
472  if (OnlyLocal) {
473    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
474                                  TLEnd = Unit.top_level_end();
475           TL != TLEnd; ++TL) {
476      IdxCtx.indexTopLevelDecl(*TL);
477      if (IdxCtx.shouldAbort())
478        return;
479    }
480
481  } else {
482    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
483    for (TranslationUnitDecl::decl_iterator
484           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
485      IdxCtx.indexTopLevelDecl(*I);
486      if (IdxCtx.shouldAbort())
487        return;
488    }
489  }
490}
491
492static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
493  if (!IdxCtx.hasDiagnosticCallback())
494    return;
495
496  CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
497  IdxCtx.handleDiagnosticSet(DiagSet);
498}
499
500static void clang_indexTranslationUnit_Impl(void *UserData) {
501  IndexTranslationUnitInfo *ITUI =
502    static_cast<IndexTranslationUnitInfo*>(UserData);
503  CXTranslationUnit TU = ITUI->TU;
504  CXClientData client_data = ITUI->client_data;
505  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
506  unsigned index_callbacks_size = ITUI->index_callbacks_size;
507  unsigned index_options = ITUI->index_options;
508  ITUI->result = 1; // init as error.
509
510  if (!TU)
511    return;
512  if (!client_index_callbacks || index_callbacks_size == 0)
513    return;
514
515  CIndexer *CXXIdx = (CIndexer*)TU->CIdx;
516  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
517    setThreadBackgroundPriority();
518
519  IndexerCallbacks CB;
520  memset(&CB, 0, sizeof(CB));
521  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
522                                  ? index_callbacks_size : sizeof(CB);
523  memcpy(&CB, client_index_callbacks, ClientCBSize);
524
525  OwningPtr<IndexingContext> IndexCtx;
526  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
527
528  // Recover resources if we crash before exiting this method.
529  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
530    IndexCtxCleanup(IndexCtx.get());
531
532  OwningPtr<IndexingConsumer> IndexConsumer;
533  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
534
535  // Recover resources if we crash before exiting this method.
536  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
537    IndexConsumerCleanup(IndexConsumer.get());
538
539  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
540  if (!Unit)
541    return;
542
543  ASTUnit::ConcurrencyCheck Check(*Unit);
544
545  FileManager &FileMgr = Unit->getFileManager();
546
547  if (Unit->getOriginalSourceFileName().empty())
548    IndexCtx->enteredMainFile(0);
549  else
550    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
551
552  IndexConsumer->Initialize(Unit->getASTContext());
553
554  indexPreprocessingRecord(*Unit, *IndexCtx);
555  indexTranslationUnit(*Unit, *IndexCtx);
556  indexDiagnostics(TU, *IndexCtx);
557
558  ITUI->result = 0;
559}
560
561//===----------------------------------------------------------------------===//
562// libclang public APIs.
563//===----------------------------------------------------------------------===//
564
565extern "C" {
566
567int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
568  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
569}
570
571const CXIdxObjCContainerDeclInfo *
572clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
573  if (!DInfo)
574    return 0;
575
576  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
577  if (const ObjCContainerDeclInfo *
578        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
579    return &ContInfo->ObjCContDeclInfo;
580
581  return 0;
582}
583
584const CXIdxObjCInterfaceDeclInfo *
585clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
586  if (!DInfo)
587    return 0;
588
589  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
590  if (const ObjCInterfaceDeclInfo *
591        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
592    return &InterInfo->ObjCInterDeclInfo;
593
594  return 0;
595}
596
597const CXIdxObjCCategoryDeclInfo *
598clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
599  if (!DInfo)
600    return 0;
601
602  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
603  if (const ObjCCategoryDeclInfo *
604        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
605    return &CatInfo->ObjCCatDeclInfo;
606
607  return 0;
608}
609
610const CXIdxObjCProtocolRefListInfo *
611clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
612  if (!DInfo)
613    return 0;
614
615  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
616
617  if (const ObjCInterfaceDeclInfo *
618        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
619    return InterInfo->ObjCInterDeclInfo.protocols;
620
621  if (const ObjCProtocolDeclInfo *
622        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
623    return &ProtInfo->ObjCProtoRefListInfo;
624
625  if (const ObjCCategoryDeclInfo *CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
626    return CatInfo->ObjCCatDeclInfo.protocols;
627
628  return 0;
629}
630
631const CXIdxObjCPropertyDeclInfo *
632clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *DInfo) {
633  if (!DInfo)
634    return 0;
635
636  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
637  if (const ObjCPropertyDeclInfo *PropInfo = dyn_cast<ObjCPropertyDeclInfo>(DI))
638    return &PropInfo->ObjCPropDeclInfo;
639
640  return 0;
641}
642
643const CXIdxIBOutletCollectionAttrInfo *
644clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
645  if (!AInfo)
646    return 0;
647
648  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
649  if (const IBOutletCollectionInfo *
650        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
651    return &IBInfo->IBCollInfo;
652
653  return 0;
654}
655
656const CXIdxCXXClassDeclInfo *
657clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
658  if (!DInfo)
659    return 0;
660
661  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
662  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
663    return &ClassInfo->CXXClassInfo;
664
665  return 0;
666}
667
668CXIdxClientContainer
669clang_index_getClientContainer(const CXIdxContainerInfo *info) {
670  if (!info)
671    return 0;
672  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
673  return Container->IndexCtx->getClientContainerForDC(Container->DC);
674}
675
676void clang_index_setClientContainer(const CXIdxContainerInfo *info,
677                                    CXIdxClientContainer client) {
678  if (!info)
679    return;
680  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
681  Container->IndexCtx->addContainerInMap(Container->DC, client);
682}
683
684CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
685  if (!info)
686    return 0;
687  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
688  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
689}
690
691void clang_index_setClientEntity(const CXIdxEntityInfo *info,
692                                 CXIdxClientEntity client) {
693  if (!info)
694    return;
695  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
696  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
697}
698
699CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
700  // For now, CXIndexAction is featureless.
701  return CIdx;
702}
703
704void clang_IndexAction_dispose(CXIndexAction idxAction) {
705  // For now, CXIndexAction is featureless.
706}
707
708int clang_indexSourceFile(CXIndexAction idxAction,
709                          CXClientData client_data,
710                          IndexerCallbacks *index_callbacks,
711                          unsigned index_callbacks_size,
712                          unsigned index_options,
713                          const char *source_filename,
714                          const char * const *command_line_args,
715                          int num_command_line_args,
716                          struct CXUnsavedFile *unsaved_files,
717                          unsigned num_unsaved_files,
718                          CXTranslationUnit *out_TU,
719                          unsigned TU_options) {
720
721  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
722                               index_callbacks_size, index_options,
723                               source_filename, command_line_args,
724                               num_command_line_args, unsaved_files,
725                               num_unsaved_files, out_TU, TU_options, 0 };
726
727  if (getenv("LIBCLANG_NOTHREADS")) {
728    clang_indexSourceFile_Impl(&ITUI);
729    return ITUI.result;
730  }
731
732  llvm::CrashRecoveryContext CRC;
733
734  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
735    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
736    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
737    fprintf(stderr, "  'command_line_args' : [");
738    for (int i = 0; i != num_command_line_args; ++i) {
739      if (i)
740        fprintf(stderr, ", ");
741      fprintf(stderr, "'%s'", command_line_args[i]);
742    }
743    fprintf(stderr, "],\n");
744    fprintf(stderr, "  'unsaved_files' : [");
745    for (unsigned i = 0; i != num_unsaved_files; ++i) {
746      if (i)
747        fprintf(stderr, ", ");
748      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
749              unsaved_files[i].Length);
750    }
751    fprintf(stderr, "],\n");
752    fprintf(stderr, "  'options' : %d,\n", TU_options);
753    fprintf(stderr, "}\n");
754
755    return 1;
756  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
757    if (out_TU)
758      PrintLibclangResourceUsage(*out_TU);
759  }
760
761  return ITUI.result;
762}
763
764int clang_indexTranslationUnit(CXIndexAction idxAction,
765                               CXClientData client_data,
766                               IndexerCallbacks *index_callbacks,
767                               unsigned index_callbacks_size,
768                               unsigned index_options,
769                               CXTranslationUnit TU) {
770
771  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
772                                    index_callbacks_size, index_options, TU,
773                                    0 };
774
775  if (getenv("LIBCLANG_NOTHREADS")) {
776    clang_indexTranslationUnit_Impl(&ITUI);
777    return ITUI.result;
778  }
779
780  llvm::CrashRecoveryContext CRC;
781
782  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
783    fprintf(stderr, "libclang: crash detected during indexing TU\n");
784
785    return 1;
786  }
787
788  return ITUI.result;
789}
790
791void clang_indexLoc_getFileLocation(CXIdxLoc location,
792                                    CXIdxClientFile *indexFile,
793                                    CXFile *file,
794                                    unsigned *line,
795                                    unsigned *column,
796                                    unsigned *offset) {
797  if (indexFile) *indexFile = 0;
798  if (file)   *file = 0;
799  if (line)   *line = 0;
800  if (column) *column = 0;
801  if (offset) *offset = 0;
802
803  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
804  if (!location.ptr_data[0] || Loc.isInvalid())
805    return;
806
807  IndexingContext &IndexCtx =
808      *static_cast<IndexingContext*>(location.ptr_data[0]);
809  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
810}
811
812CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
813  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
814  if (!location.ptr_data[0] || Loc.isInvalid())
815    return clang_getNullLocation();
816
817  IndexingContext &IndexCtx =
818      *static_cast<IndexingContext*>(location.ptr_data[0]);
819  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
820}
821
822} // end: extern "C"
823
824