Indexing.cpp revision fdc1795acc9d5d73a767cc7d43ad1546e93adbba 
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    setBackGroundPriority();
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  Unit = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
392                                                       IndexAction.get(),
393                                                       Unit,
394                                                       Persistent,
395                                                       ResourceFilesPath,
396                                                       OnlyLocalDecls,
397                                                    /*CaptureDiagnostics=*/true,
398                                                       PrecompilePreamble,
399                                                    CacheCodeCompletionResults);
400  if (!Unit)
401    return;
402
403  if (out_TU)
404    *out_TU = CXTU->takeTU();
405
406  ITUI->result = 0; // success.
407}
408
409//===----------------------------------------------------------------------===//
410// clang_indexTranslationUnit Implementation
411//===----------------------------------------------------------------------===//
412
413namespace {
414
415struct IndexTranslationUnitInfo {
416  CXIndexAction idxAction;
417  CXClientData client_data;
418  IndexerCallbacks *index_callbacks;
419  unsigned index_callbacks_size;
420  unsigned index_options;
421  CXTranslationUnit TU;
422  int result;
423};
424
425} // anonymous namespace
426
427static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
428  Preprocessor &PP = Unit.getPreprocessor();
429  if (!PP.getPreprocessingRecord())
430    return;
431
432  PreprocessingRecord &PPRec = *PP.getPreprocessingRecord();
433
434  // FIXME: Only deserialize inclusion directives.
435  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
436  // that it depends on.
437
438  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
439  PreprocessingRecord::iterator I, E;
440  if (OnlyLocal) {
441    I = PPRec.local_begin();
442    E = PPRec.local_end();
443  } else {
444    I = PPRec.begin();
445    E = PPRec.end();
446  }
447
448  for (; I != E; ++I) {
449    PreprocessedEntity *PPE = *I;
450
451    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
452      IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(), ID->getFileName(),
453                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
454                     !ID->wasInQuotes());
455    }
456  }
457}
458
459static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
460  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
461  // that it depends on.
462
463  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
464
465  if (OnlyLocal) {
466    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
467                                  TLEnd = Unit.top_level_end();
468           TL != TLEnd; ++TL) {
469      IdxCtx.indexTopLevelDecl(*TL);
470      if (IdxCtx.shouldAbort())
471        return;
472    }
473
474  } else {
475    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
476    for (TranslationUnitDecl::decl_iterator
477           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
478      IdxCtx.indexTopLevelDecl(*I);
479      if (IdxCtx.shouldAbort())
480        return;
481    }
482  }
483}
484
485static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
486  if (!IdxCtx.hasDiagnosticCallback())
487    return;
488
489  CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
490  IdxCtx.handleDiagnosticSet(DiagSet);
491}
492
493static void clang_indexTranslationUnit_Impl(void *UserData) {
494  IndexTranslationUnitInfo *ITUI =
495    static_cast<IndexTranslationUnitInfo*>(UserData);
496  CXTranslationUnit TU = ITUI->TU;
497  CXClientData client_data = ITUI->client_data;
498  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
499  unsigned index_callbacks_size = ITUI->index_callbacks_size;
500  unsigned index_options = ITUI->index_options;
501  ITUI->result = 1; // init as error.
502
503  if (!TU)
504    return;
505  if (!client_index_callbacks || index_callbacks_size == 0)
506    return;
507
508  CIndexer *CXXIdx = (CIndexer*)TU->CIdx;
509  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
510    setBackGroundPriority();
511
512  IndexerCallbacks CB;
513  memset(&CB, 0, sizeof(CB));
514  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
515                                  ? index_callbacks_size : sizeof(CB);
516  memcpy(&CB, client_index_callbacks, ClientCBSize);
517
518  OwningPtr<IndexingContext> IndexCtx;
519  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
520
521  // Recover resources if we crash before exiting this method.
522  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
523    IndexCtxCleanup(IndexCtx.get());
524
525  OwningPtr<IndexingConsumer> IndexConsumer;
526  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
527
528  // Recover resources if we crash before exiting this method.
529  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
530    IndexConsumerCleanup(IndexConsumer.get());
531
532  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
533  if (!Unit)
534    return;
535
536  FileManager &FileMgr = Unit->getFileManager();
537
538  if (Unit->getOriginalSourceFileName().empty())
539    IndexCtx->enteredMainFile(0);
540  else
541    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
542
543  IndexConsumer->Initialize(Unit->getASTContext());
544
545  indexPreprocessingRecord(*Unit, *IndexCtx);
546  indexTranslationUnit(*Unit, *IndexCtx);
547  indexDiagnostics(TU, *IndexCtx);
548
549  ITUI->result = 0;
550}
551
552//===----------------------------------------------------------------------===//
553// libclang public APIs.
554//===----------------------------------------------------------------------===//
555
556extern "C" {
557
558int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
559  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
560}
561
562const CXIdxObjCContainerDeclInfo *
563clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
564  if (!DInfo)
565    return 0;
566
567  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
568  if (const ObjCContainerDeclInfo *
569        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
570    return &ContInfo->ObjCContDeclInfo;
571
572  return 0;
573}
574
575const CXIdxObjCInterfaceDeclInfo *
576clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
577  if (!DInfo)
578    return 0;
579
580  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
581  if (const ObjCInterfaceDeclInfo *
582        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
583    return &InterInfo->ObjCInterDeclInfo;
584
585  return 0;
586}
587
588const CXIdxObjCCategoryDeclInfo *
589clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
590  if (!DInfo)
591    return 0;
592
593  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
594  if (const ObjCCategoryDeclInfo *
595        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
596    return &CatInfo->ObjCCatDeclInfo;
597
598  return 0;
599}
600
601const CXIdxObjCProtocolRefListInfo *
602clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
603  if (!DInfo)
604    return 0;
605
606  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
607
608  if (const ObjCInterfaceDeclInfo *
609        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
610    return InterInfo->ObjCInterDeclInfo.protocols;
611
612  if (const ObjCProtocolDeclInfo *
613        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
614    return &ProtInfo->ObjCProtoRefListInfo;
615
616  if (const ObjCCategoryDeclInfo *CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
617    return CatInfo->ObjCCatDeclInfo.protocols;
618
619  return 0;
620}
621
622const CXIdxObjCPropertyDeclInfo *
623clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *DInfo) {
624  if (!DInfo)
625    return 0;
626
627  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
628  if (const ObjCPropertyDeclInfo *PropInfo = dyn_cast<ObjCPropertyDeclInfo>(DI))
629    return &PropInfo->ObjCPropDeclInfo;
630
631  return 0;
632}
633
634const CXIdxIBOutletCollectionAttrInfo *
635clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
636  if (!AInfo)
637    return 0;
638
639  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
640  if (const IBOutletCollectionInfo *
641        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
642    return &IBInfo->IBCollInfo;
643
644  return 0;
645}
646
647const CXIdxCXXClassDeclInfo *
648clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
649  if (!DInfo)
650    return 0;
651
652  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
653  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
654    return &ClassInfo->CXXClassInfo;
655
656  return 0;
657}
658
659CXIdxClientContainer
660clang_index_getClientContainer(const CXIdxContainerInfo *info) {
661  if (!info)
662    return 0;
663  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
664  return Container->IndexCtx->getClientContainerForDC(Container->DC);
665}
666
667void clang_index_setClientContainer(const CXIdxContainerInfo *info,
668                                    CXIdxClientContainer client) {
669  if (!info)
670    return;
671  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
672  Container->IndexCtx->addContainerInMap(Container->DC, client);
673}
674
675CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
676  if (!info)
677    return 0;
678  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
679  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
680}
681
682void clang_index_setClientEntity(const CXIdxEntityInfo *info,
683                                 CXIdxClientEntity client) {
684  if (!info)
685    return;
686  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
687  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
688}
689
690CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
691  // For now, CXIndexAction is featureless.
692  return CIdx;
693}
694
695void clang_IndexAction_dispose(CXIndexAction idxAction) {
696  // For now, CXIndexAction is featureless.
697}
698
699int clang_indexSourceFile(CXIndexAction idxAction,
700                          CXClientData client_data,
701                          IndexerCallbacks *index_callbacks,
702                          unsigned index_callbacks_size,
703                          unsigned index_options,
704                          const char *source_filename,
705                          const char * const *command_line_args,
706                          int num_command_line_args,
707                          struct CXUnsavedFile *unsaved_files,
708                          unsigned num_unsaved_files,
709                          CXTranslationUnit *out_TU,
710                          unsigned TU_options) {
711
712  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
713                               index_callbacks_size, index_options,
714                               source_filename, command_line_args,
715                               num_command_line_args, unsaved_files,
716                               num_unsaved_files, out_TU, TU_options, 0 };
717
718  if (getenv("LIBCLANG_NOTHREADS")) {
719    clang_indexSourceFile_Impl(&ITUI);
720    return ITUI.result;
721  }
722
723  llvm::CrashRecoveryContext CRC;
724
725  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
726    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
727    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
728    fprintf(stderr, "  'command_line_args' : [");
729    for (int i = 0; i != num_command_line_args; ++i) {
730      if (i)
731        fprintf(stderr, ", ");
732      fprintf(stderr, "'%s'", command_line_args[i]);
733    }
734    fprintf(stderr, "],\n");
735    fprintf(stderr, "  'unsaved_files' : [");
736    for (unsigned i = 0; i != num_unsaved_files; ++i) {
737      if (i)
738        fprintf(stderr, ", ");
739      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
740              unsaved_files[i].Length);
741    }
742    fprintf(stderr, "],\n");
743    fprintf(stderr, "  'options' : %d,\n", TU_options);
744    fprintf(stderr, "}\n");
745
746    return 1;
747  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
748    if (out_TU)
749      PrintLibclangResourceUsage(*out_TU);
750  }
751
752  return ITUI.result;
753}
754
755int clang_indexTranslationUnit(CXIndexAction idxAction,
756                               CXClientData client_data,
757                               IndexerCallbacks *index_callbacks,
758                               unsigned index_callbacks_size,
759                               unsigned index_options,
760                               CXTranslationUnit TU) {
761
762  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
763                                    index_callbacks_size, index_options, TU,
764                                    0 };
765
766  if (getenv("LIBCLANG_NOTHREADS")) {
767    clang_indexTranslationUnit_Impl(&ITUI);
768    return ITUI.result;
769  }
770
771  llvm::CrashRecoveryContext CRC;
772
773  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
774    fprintf(stderr, "libclang: crash detected during indexing TU\n");
775
776    return 1;
777  }
778
779  return ITUI.result;
780}
781
782void clang_indexLoc_getFileLocation(CXIdxLoc location,
783                                    CXIdxClientFile *indexFile,
784                                    CXFile *file,
785                                    unsigned *line,
786                                    unsigned *column,
787                                    unsigned *offset) {
788  if (indexFile) *indexFile = 0;
789  if (file)   *file = 0;
790  if (line)   *line = 0;
791  if (column) *column = 0;
792  if (offset) *offset = 0;
793
794  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
795  if (!location.ptr_data[0] || Loc.isInvalid())
796    return;
797
798  IndexingContext &IndexCtx =
799      *static_cast<IndexingContext*>(location.ptr_data[0]);
800  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
801}
802
803CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
804  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
805  if (!location.ptr_data[0] || Loc.isInvalid())
806    return clang_getNullLocation();
807
808  IndexingContext &IndexCtx =
809      *static_cast<IndexingContext*>(location.ptr_data[0]);
810  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
811}
812
813} // end: extern "C"
814
815