Indexing.cpp revision 996e6e564af7483e2d5e0b70df5fdb9f79ec4b5a 
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/Utils.h"
22#include "clang/Sema/SemaConsumer.h"
23#include "clang/AST/ASTConsumer.h"
24#include "clang/AST/DeclVisitor.h"
25#include "clang/Lex/Preprocessor.h"
26#include "clang/Lex/PPCallbacks.h"
27#include "llvm/Support/MemoryBuffer.h"
28#include "llvm/Support/CrashRecoveryContext.h"
29
30using namespace clang;
31using namespace cxstring;
32using namespace cxtu;
33using namespace cxindex;
34
35static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx);
36
37namespace {
38
39//===----------------------------------------------------------------------===//
40// IndexPPCallbacks
41//===----------------------------------------------------------------------===//
42
43class IndexPPCallbacks : public PPCallbacks {
44  Preprocessor &PP;
45  IndexingContext &IndexCtx;
46  bool IsMainFileEntered;
47
48public:
49  IndexPPCallbacks(Preprocessor &PP, IndexingContext &indexCtx)
50    : PP(PP), IndexCtx(indexCtx), IsMainFileEntered(false) { }
51
52  virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
53                          SrcMgr::CharacteristicKind FileType, FileID PrevFID) {
54    if (IsMainFileEntered)
55      return;
56
57    SourceManager &SM = PP.getSourceManager();
58    SourceLocation MainFileLoc = SM.getLocForStartOfFile(SM.getMainFileID());
59
60    if (Loc == MainFileLoc && Reason == PPCallbacks::EnterFile) {
61      IsMainFileEntered = true;
62      IndexCtx.enteredMainFile(SM.getFileEntryForID(SM.getMainFileID()));
63    }
64  }
65
66  virtual void InclusionDirective(SourceLocation HashLoc,
67                                  const Token &IncludeTok,
68                                  StringRef FileName,
69                                  bool IsAngled,
70                                  const FileEntry *File,
71                                  SourceLocation EndLoc,
72                                  StringRef SearchPath,
73                                  StringRef RelativePath) {
74    bool isImport = (IncludeTok.is(tok::identifier) &&
75            IncludeTok.getIdentifierInfo()->getPPKeywordID() == tok::pp_import);
76    IndexCtx.ppIncludedFile(HashLoc, FileName, File, isImport, IsAngled);
77  }
78
79  /// MacroDefined - This hook is called whenever a macro definition is seen.
80  virtual void MacroDefined(const Token &Id, const MacroInfo *MI) {
81  }
82
83  /// MacroUndefined - This hook is called whenever a macro #undef is seen.
84  /// MI is released immediately following this callback.
85  virtual void MacroUndefined(const Token &MacroNameTok, const MacroInfo *MI) {
86  }
87
88  /// MacroExpands - This is called by when a macro invocation is found.
89  virtual void MacroExpands(const Token &MacroNameTok, const MacroInfo* MI,
90                            SourceRange Range) {
91  }
92
93  /// SourceRangeSkipped - This hook is called when a source range is skipped.
94  /// \param Range The SourceRange that was skipped. The range begins at the
95  /// #if/#else directive and ends after the #endif/#else directive.
96  virtual void SourceRangeSkipped(SourceRange Range) {
97  }
98};
99
100//===----------------------------------------------------------------------===//
101// IndexingConsumer
102//===----------------------------------------------------------------------===//
103
104class IndexingConsumer : public ASTConsumer {
105  IndexingContext &IndexCtx;
106
107public:
108  explicit IndexingConsumer(IndexingContext &indexCtx)
109    : IndexCtx(indexCtx) { }
110
111  // ASTConsumer Implementation
112
113  virtual void Initialize(ASTContext &Context) {
114    IndexCtx.setASTContext(Context);
115    IndexCtx.startedTranslationUnit();
116  }
117
118  virtual void HandleTranslationUnit(ASTContext &Ctx) {
119  }
120
121  virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
122    IndexCtx.indexDeclGroupRef(DG);
123    return !IndexCtx.shouldAbort();
124  }
125
126  /// \brief Handle the specified top-level declaration that occurred inside
127  /// and ObjC container.
128  virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
129    // They will be handled after the interface is seen first.
130    IndexCtx.addTUDeclInObjCContainer(D);
131  }
132
133  /// \brief This is called by the AST reader when deserializing things.
134  /// The default implementation forwards to HandleTopLevelDecl but we don't
135  /// care about them when indexing, so have an empty definition.
136  virtual void HandleInterestingDecl(DeclGroupRef D) {}
137};
138
139//===----------------------------------------------------------------------===//
140// CaptureDiagnosticConsumer
141//===----------------------------------------------------------------------===//
142
143class CaptureDiagnosticConsumer : public DiagnosticConsumer {
144  SmallVector<StoredDiagnostic, 4> Errors;
145public:
146
147  virtual void HandleDiagnostic(DiagnosticsEngine::Level level,
148                                const Diagnostic &Info) {
149    if (level >= DiagnosticsEngine::Error)
150      Errors.push_back(StoredDiagnostic(level, Info));
151  }
152
153  DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
154    return new IgnoringDiagConsumer();
155  }
156};
157
158//===----------------------------------------------------------------------===//
159// IndexingFrontendAction
160//===----------------------------------------------------------------------===//
161
162class IndexingFrontendAction : public ASTFrontendAction {
163  IndexingContext IndexCtx;
164  CXTranslationUnit CXTU;
165
166public:
167  IndexingFrontendAction(CXClientData clientData,
168                         IndexerCallbacks &indexCallbacks,
169                         unsigned indexOptions,
170                         CXTranslationUnit cxTU)
171    : IndexCtx(clientData, indexCallbacks, indexOptions, cxTU),
172      CXTU(cxTU) { }
173
174  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
175                                         StringRef InFile) {
176    IndexCtx.setASTContext(CI.getASTContext());
177    Preprocessor &PP = CI.getPreprocessor();
178    PP.addPPCallbacks(new IndexPPCallbacks(PP, IndexCtx));
179    return new IndexingConsumer(IndexCtx);
180  }
181
182  virtual void EndSourceFileAction() {
183    indexDiagnostics(CXTU, IndexCtx);
184  }
185
186  virtual TranslationUnitKind getTranslationUnitKind() { return TU_Prefix; }
187  virtual bool hasCodeCompletionSupport() const { return false; }
188};
189
190//===----------------------------------------------------------------------===//
191// clang_indexSourceFileUnit Implementation
192//===----------------------------------------------------------------------===//
193
194struct IndexSourceFileInfo {
195  CXIndexAction idxAction;
196  CXClientData client_data;
197  IndexerCallbacks *index_callbacks;
198  unsigned index_callbacks_size;
199  unsigned index_options;
200  const char *source_filename;
201  const char *const *command_line_args;
202  int num_command_line_args;
203  struct CXUnsavedFile *unsaved_files;
204  unsigned num_unsaved_files;
205  CXTranslationUnit *out_TU;
206  unsigned TU_options;
207  int result;
208};
209
210struct MemBufferOwner {
211  SmallVector<const llvm::MemoryBuffer *, 8> Buffers;
212
213  ~MemBufferOwner() {
214    for (SmallVectorImpl<const llvm::MemoryBuffer *>::iterator
215           I = Buffers.begin(), E = Buffers.end(); I != E; ++I)
216      delete *I;
217  }
218};
219
220} // anonymous namespace
221
222static void clang_indexSourceFile_Impl(void *UserData) {
223  IndexSourceFileInfo *ITUI =
224    static_cast<IndexSourceFileInfo*>(UserData);
225  CXIndex CIdx = (CXIndex)ITUI->idxAction;
226  CXClientData client_data = ITUI->client_data;
227  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
228  unsigned index_callbacks_size = ITUI->index_callbacks_size;
229  unsigned index_options = ITUI->index_options;
230  const char *source_filename = ITUI->source_filename;
231  const char * const *command_line_args = ITUI->command_line_args;
232  int num_command_line_args = ITUI->num_command_line_args;
233  struct CXUnsavedFile *unsaved_files = ITUI->unsaved_files;
234  unsigned num_unsaved_files = ITUI->num_unsaved_files;
235  CXTranslationUnit *out_TU  = ITUI->out_TU;
236  unsigned TU_options = ITUI->TU_options;
237  ITUI->result = 1; // init as error.
238
239  if (out_TU)
240    *out_TU = 0;
241  bool requestedToGetTU = (out_TU != 0);
242
243  if (!CIdx)
244    return;
245  if (!client_index_callbacks || index_callbacks_size == 0)
246    return;
247
248  IndexerCallbacks CB;
249  memset(&CB, 0, sizeof(CB));
250  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
251                                  ? index_callbacks_size : sizeof(CB);
252  memcpy(&CB, client_index_callbacks, ClientCBSize);
253
254  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
255
256  CaptureDiagnosticConsumer *CaptureDiag = new CaptureDiagnosticConsumer();
257
258  // Configure the diagnostics.
259  DiagnosticOptions DiagOpts;
260  llvm::IntrusiveRefCntPtr<DiagnosticsEngine>
261    Diags(CompilerInstance::createDiagnostics(DiagOpts, num_command_line_args,
262                                                command_line_args,
263                                                CaptureDiag,
264                                                /*ShouldOwnClient=*/true,
265                                                /*ShouldCloneClient=*/false));
266
267  // Recover resources if we crash before exiting this function.
268  llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
269    llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
270    DiagCleanup(Diags.getPtr());
271
272  llvm::OwningPtr<std::vector<const char *> >
273    Args(new std::vector<const char*>());
274
275  // Recover resources if we crash before exiting this method.
276  llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
277    ArgsCleanup(Args.get());
278
279  Args->insert(Args->end(), command_line_args,
280               command_line_args + num_command_line_args);
281
282  // The 'source_filename' argument is optional.  If the caller does not
283  // specify it then it is assumed that the source file is specified
284  // in the actual argument list.
285  // Put the source file after command_line_args otherwise if '-x' flag is
286  // present it will be unused.
287  if (source_filename)
288    Args->push_back(source_filename);
289
290  llvm::IntrusiveRefCntPtr<CompilerInvocation>
291    CInvok(createInvocationFromCommandLine(*Args, Diags));
292
293  if (!CInvok)
294    return;
295
296  // Recover resources if we crash before exiting this function.
297  llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
298    llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
299    CInvokCleanup(CInvok.getPtr());
300
301  if (CInvok->getFrontendOpts().Inputs.empty())
302    return;
303
304  llvm::OwningPtr<MemBufferOwner> BufOwner(new MemBufferOwner());
305
306  // Recover resources if we crash before exiting this method.
307  llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner>
308    BufOwnerCleanup(BufOwner.get());
309
310  for (unsigned I = 0; I != num_unsaved_files; ++I) {
311    StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
312    const llvm::MemoryBuffer *Buffer
313      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
314    CInvok->getPreprocessorOpts().addRemappedFile(unsaved_files[I].Filename, Buffer);
315    BufOwner->Buffers.push_back(Buffer);
316  }
317
318  // Since libclang is primarily used by batch tools dealing with
319  // (often very broken) source code, where spell-checking can have a
320  // significant negative impact on performance (particularly when
321  // precompiled headers are involved), we disable it.
322  CInvok->getLangOpts()->SpellChecking = false;
323
324  if (!requestedToGetTU)
325    CInvok->getPreprocessorOpts().DetailedRecord = false;
326
327  ASTUnit *Unit = ASTUnit::create(CInvok.getPtr(), Diags,
328                                  /*CaptureDiagnostics=*/true);
329  llvm::OwningPtr<CXTUOwner> CXTU(new CXTUOwner(MakeCXTranslationUnit(Unit)));
330
331  // Recover resources if we crash before exiting this method.
332  llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
333    CXTUCleanup(CXTU.get());
334
335  llvm::OwningPtr<IndexingFrontendAction> IndexAction;
336  IndexAction.reset(new IndexingFrontendAction(client_data, CB,
337                                               index_options, CXTU->getTU()));
338
339  // Recover resources if we crash before exiting this method.
340  llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
341    IndexActionCleanup(IndexAction.get());
342
343  bool Persistent = requestedToGetTU;
344  StringRef ResourceFilesPath = CXXIdx->getClangResourcesPath();
345  bool OnlyLocalDecls = false;
346  bool PrecompilePreamble = false;
347  bool CacheCodeCompletionResults = false;
348  PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
349  PPOpts.DetailedRecord = false;
350  PPOpts.DetailedRecordIncludesNestedMacroExpansions = false;
351
352  if (requestedToGetTU) {
353    OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
354    PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
355    // FIXME: Add a flag for modules.
356    CacheCodeCompletionResults
357      = TU_options & CXTranslationUnit_CacheCompletionResults;
358    if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
359      PPOpts.DetailedRecord = true;
360      PPOpts.DetailedRecordIncludesNestedMacroExpansions
361          = (TU_options & CXTranslationUnit_NestedMacroExpansions);
362    }
363  }
364
365  Unit = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
366                                                       IndexAction.get(),
367                                                       Unit,
368                                                       Persistent,
369                                                       ResourceFilesPath,
370                                                       OnlyLocalDecls,
371                                                    /*CaptureDiagnostics=*/true,
372                                                       PrecompilePreamble,
373                                                    CacheCodeCompletionResults);
374  if (!Unit)
375    return;
376
377  if (out_TU)
378    *out_TU = CXTU->takeTU();
379
380  ITUI->result = 0; // success.
381}
382
383//===----------------------------------------------------------------------===//
384// clang_indexTranslationUnit Implementation
385//===----------------------------------------------------------------------===//
386
387namespace {
388
389struct IndexTranslationUnitInfo {
390  CXIndexAction idxAction;
391  CXClientData client_data;
392  IndexerCallbacks *index_callbacks;
393  unsigned index_callbacks_size;
394  unsigned index_options;
395  CXTranslationUnit TU;
396  int result;
397};
398
399} // anonymous namespace
400
401static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
402  Preprocessor &PP = Unit.getPreprocessor();
403  if (!PP.getPreprocessingRecord())
404    return;
405
406  PreprocessingRecord &PPRec = *PP.getPreprocessingRecord();
407
408  // FIXME: Only deserialize inclusion directives.
409  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
410  // that it depends on.
411
412  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
413  PreprocessingRecord::iterator I, E;
414  if (OnlyLocal) {
415    I = PPRec.local_begin();
416    E = PPRec.local_end();
417  } else {
418    I = PPRec.begin();
419    E = PPRec.end();
420  }
421
422  for (; I != E; ++I) {
423    PreprocessedEntity *PPE = *I;
424
425    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
426      IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(), ID->getFileName(),
427                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
428                     !ID->wasInQuotes());
429    }
430  }
431}
432
433static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
434  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
435  // that it depends on.
436
437  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
438
439  if (OnlyLocal) {
440    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
441                                  TLEnd = Unit.top_level_end();
442           TL != TLEnd; ++TL) {
443      IdxCtx.indexTopLevelDecl(*TL);
444      if (IdxCtx.shouldAbort())
445        return;
446    }
447
448  } else {
449    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
450    for (TranslationUnitDecl::decl_iterator
451           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
452      IdxCtx.indexTopLevelDecl(*I);
453      if (IdxCtx.shouldAbort())
454        return;
455    }
456  }
457}
458
459static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
460  if (!IdxCtx.hasDiagnosticCallback())
461    return;
462
463  CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
464  IdxCtx.handleDiagnosticSet(DiagSet);
465}
466
467static void clang_indexTranslationUnit_Impl(void *UserData) {
468  IndexTranslationUnitInfo *ITUI =
469    static_cast<IndexTranslationUnitInfo*>(UserData);
470  CXTranslationUnit TU = ITUI->TU;
471  CXClientData client_data = ITUI->client_data;
472  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
473  unsigned index_callbacks_size = ITUI->index_callbacks_size;
474  unsigned index_options = ITUI->index_options;
475  ITUI->result = 1; // init as error.
476
477  if (!TU)
478    return;
479  if (!client_index_callbacks || index_callbacks_size == 0)
480    return;
481
482  IndexerCallbacks CB;
483  memset(&CB, 0, sizeof(CB));
484  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
485                                  ? index_callbacks_size : sizeof(CB);
486  memcpy(&CB, client_index_callbacks, ClientCBSize);
487
488  llvm::OwningPtr<IndexingContext> IndexCtx;
489  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
490
491  // Recover resources if we crash before exiting this method.
492  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
493    IndexCtxCleanup(IndexCtx.get());
494
495  llvm::OwningPtr<IndexingConsumer> IndexConsumer;
496  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
497
498  // Recover resources if we crash before exiting this method.
499  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
500    IndexConsumerCleanup(IndexConsumer.get());
501
502  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
503  if (!Unit)
504    return;
505
506  FileManager &FileMgr = Unit->getFileManager();
507
508  if (Unit->getOriginalSourceFileName().empty())
509    IndexCtx->enteredMainFile(0);
510  else
511    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
512
513  IndexConsumer->Initialize(Unit->getASTContext());
514
515  indexPreprocessingRecord(*Unit, *IndexCtx);
516  indexTranslationUnit(*Unit, *IndexCtx);
517  indexDiagnostics(TU, *IndexCtx);
518
519  ITUI->result = 0;
520}
521
522//===----------------------------------------------------------------------===//
523// libclang public APIs.
524//===----------------------------------------------------------------------===//
525
526extern "C" {
527
528int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
529  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
530}
531
532const CXIdxObjCContainerDeclInfo *
533clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
534  if (!DInfo)
535    return 0;
536
537  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
538  if (const ObjCContainerDeclInfo *
539        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
540    return &ContInfo->ObjCContDeclInfo;
541
542  return 0;
543}
544
545const CXIdxObjCInterfaceDeclInfo *
546clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
547  if (!DInfo)
548    return 0;
549
550  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
551  if (const ObjCInterfaceDeclInfo *
552        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
553    return &InterInfo->ObjCInterDeclInfo;
554
555  return 0;
556}
557
558const CXIdxObjCCategoryDeclInfo *
559clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
560  if (!DInfo)
561    return 0;
562
563  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
564  if (const ObjCCategoryDeclInfo *
565        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
566    return &CatInfo->ObjCCatDeclInfo;
567
568  return 0;
569}
570
571const CXIdxObjCProtocolRefListInfo *
572clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
573  if (!DInfo)
574    return 0;
575
576  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
577
578  if (const ObjCInterfaceDeclInfo *
579        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
580    return InterInfo->ObjCInterDeclInfo.protocols;
581
582  if (const ObjCProtocolDeclInfo *
583        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
584    return &ProtInfo->ObjCProtoRefListInfo;
585
586  return 0;
587}
588
589const CXIdxIBOutletCollectionAttrInfo *
590clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
591  if (!AInfo)
592    return 0;
593
594  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
595  if (const IBOutletCollectionInfo *
596        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
597    return &IBInfo->IBCollInfo;
598
599  return 0;
600}
601
602const CXIdxCXXClassDeclInfo *
603clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
604  if (!DInfo)
605    return 0;
606
607  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
608  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
609    return &ClassInfo->CXXClassInfo;
610
611  return 0;
612}
613
614CXIdxClientContainer
615clang_index_getClientContainer(const CXIdxContainerInfo *info) {
616  if (!info)
617    return 0;
618  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
619  return Container->IndexCtx->getClientContainerForDC(Container->DC);
620}
621
622void clang_index_setClientContainer(const CXIdxContainerInfo *info,
623                                    CXIdxClientContainer client) {
624  if (!info)
625    return;
626  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
627  Container->IndexCtx->addContainerInMap(Container->DC, client);
628}
629
630CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
631  if (!info)
632    return 0;
633  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
634  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
635}
636
637void clang_index_setClientEntity(const CXIdxEntityInfo *info,
638                                 CXIdxClientEntity client) {
639  if (!info)
640    return;
641  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
642  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
643}
644
645CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
646  // For now, CXIndexAction is featureless.
647  return CIdx;
648}
649
650void clang_IndexAction_dispose(CXIndexAction idxAction) {
651  // For now, CXIndexAction is featureless.
652}
653
654int clang_indexSourceFile(CXIndexAction idxAction,
655                          CXClientData client_data,
656                          IndexerCallbacks *index_callbacks,
657                          unsigned index_callbacks_size,
658                          unsigned index_options,
659                          const char *source_filename,
660                          const char * const *command_line_args,
661                          int num_command_line_args,
662                          struct CXUnsavedFile *unsaved_files,
663                          unsigned num_unsaved_files,
664                          CXTranslationUnit *out_TU,
665                          unsigned TU_options) {
666
667  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
668                               index_callbacks_size, index_options,
669                               source_filename, command_line_args,
670                               num_command_line_args, unsaved_files,
671                               num_unsaved_files, out_TU, TU_options, 0 };
672
673  if (getenv("LIBCLANG_NOTHREADS")) {
674    clang_indexSourceFile_Impl(&ITUI);
675    return ITUI.result;
676  }
677
678  llvm::CrashRecoveryContext CRC;
679
680  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
681    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
682    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
683    fprintf(stderr, "  'command_line_args' : [");
684    for (int i = 0; i != num_command_line_args; ++i) {
685      if (i)
686        fprintf(stderr, ", ");
687      fprintf(stderr, "'%s'", command_line_args[i]);
688    }
689    fprintf(stderr, "],\n");
690    fprintf(stderr, "  'unsaved_files' : [");
691    for (unsigned i = 0; i != num_unsaved_files; ++i) {
692      if (i)
693        fprintf(stderr, ", ");
694      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
695              unsaved_files[i].Length);
696    }
697    fprintf(stderr, "],\n");
698    fprintf(stderr, "  'options' : %d,\n", TU_options);
699    fprintf(stderr, "}\n");
700
701    return 1;
702  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
703    if (out_TU)
704      PrintLibclangResourceUsage(*out_TU);
705  }
706
707  return ITUI.result;
708}
709
710int clang_indexTranslationUnit(CXIndexAction idxAction,
711                               CXClientData client_data,
712                               IndexerCallbacks *index_callbacks,
713                               unsigned index_callbacks_size,
714                               unsigned index_options,
715                               CXTranslationUnit TU) {
716
717  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
718                                    index_callbacks_size, index_options, TU,
719                                    0 };
720
721  if (getenv("LIBCLANG_NOTHREADS")) {
722    clang_indexTranslationUnit_Impl(&ITUI);
723    return ITUI.result;
724  }
725
726  llvm::CrashRecoveryContext CRC;
727
728  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
729    fprintf(stderr, "libclang: crash detected during indexing TU\n");
730
731    return 1;
732  }
733
734  return ITUI.result;
735}
736
737void clang_indexLoc_getFileLocation(CXIdxLoc location,
738                                    CXIdxClientFile *indexFile,
739                                    CXFile *file,
740                                    unsigned *line,
741                                    unsigned *column,
742                                    unsigned *offset) {
743  if (indexFile) *indexFile = 0;
744  if (file)   *file = 0;
745  if (line)   *line = 0;
746  if (column) *column = 0;
747  if (offset) *offset = 0;
748
749  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
750  if (!location.ptr_data[0] || Loc.isInvalid())
751    return;
752
753  IndexingContext &IndexCtx =
754      *static_cast<IndexingContext*>(location.ptr_data[0]);
755  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
756}
757
758CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
759  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
760  if (!location.ptr_data[0] || Loc.isInvalid())
761    return clang_getNullLocation();
762
763  IndexingContext &IndexCtx =
764      *static_cast<IndexingContext*>(location.ptr_data[0]);
765  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
766}
767
768} // end: extern "C"
769
770