Indexing.cpp revision 6f3ce979a7748fd117e6473d6272b16d643b6262 
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 "CIndexer.h"
16
17#include "clang/Frontend/ASTUnit.h"
18#include "clang/Frontend/CompilerInvocation.h"
19#include "clang/Frontend/CompilerInstance.h"
20#include "clang/Frontend/Utils.h"
21#include "clang/Sema/SemaConsumer.h"
22#include "clang/AST/ASTConsumer.h"
23#include "clang/AST/DeclVisitor.h"
24#include "clang/Lex/Preprocessor.h"
25#include "clang/Lex/PPCallbacks.h"
26#include "llvm/Support/MemoryBuffer.h"
27#include "llvm/Support/CrashRecoveryContext.h"
28
29using namespace clang;
30using namespace cxstring;
31using namespace cxtu;
32using namespace cxindex;
33
34namespace {
35
36//===----------------------------------------------------------------------===//
37// IndexPPCallbacks
38//===----------------------------------------------------------------------===//
39
40class IndexPPCallbacks : public PPCallbacks {
41  Preprocessor &PP;
42  IndexingContext &IndexCtx;
43  bool IsMainFileEntered;
44
45public:
46  IndexPPCallbacks(Preprocessor &PP, IndexingContext &indexCtx)
47    : PP(PP), IndexCtx(indexCtx), IsMainFileEntered(false) { }
48
49  virtual void FileChanged(SourceLocation Loc, FileChangeReason Reason,
50                          SrcMgr::CharacteristicKind FileType, FileID PrevFID) {
51    if (IsMainFileEntered)
52      return;
53
54    SourceManager &SM = PP.getSourceManager();
55    SourceLocation MainFileLoc = SM.getLocForStartOfFile(SM.getMainFileID());
56
57    if (Loc == MainFileLoc && Reason == PPCallbacks::EnterFile) {
58      IsMainFileEntered = true;
59      IndexCtx.enteredMainFile(SM.getFileEntryForID(SM.getMainFileID()));
60    }
61  }
62
63  virtual void InclusionDirective(SourceLocation HashLoc,
64                                  const Token &IncludeTok,
65                                  StringRef FileName,
66                                  bool IsAngled,
67                                  const FileEntry *File,
68                                  SourceLocation EndLoc,
69                                  StringRef SearchPath,
70                                  StringRef RelativePath) {
71    bool isImport = (IncludeTok.is(tok::identifier) &&
72            IncludeTok.getIdentifierInfo()->getPPKeywordID() == tok::pp_import);
73    IndexCtx.ppIncludedFile(HashLoc, FileName, File, isImport, IsAngled);
74  }
75
76  /// MacroDefined - This hook is called whenever a macro definition is seen.
77  virtual void MacroDefined(const Token &Id, const MacroInfo *MI) {
78  }
79
80  /// MacroUndefined - This hook is called whenever a macro #undef is seen.
81  /// MI is released immediately following this callback.
82  virtual void MacroUndefined(const Token &MacroNameTok, const MacroInfo *MI) {
83  }
84
85  /// MacroExpands - This is called by when a macro invocation is found.
86  virtual void MacroExpands(const Token &MacroNameTok, const MacroInfo* MI,
87                            SourceRange Range) {
88  }
89
90  /// SourceRangeSkipped - This hook is called when a source range is skipped.
91  /// \param Range The SourceRange that was skipped. The range begins at the
92  /// #if/#else directive and ends after the #endif/#else directive.
93  virtual void SourceRangeSkipped(SourceRange Range) {
94  }
95};
96
97//===----------------------------------------------------------------------===//
98// IndexingConsumer
99//===----------------------------------------------------------------------===//
100
101class IndexingConsumer : public ASTConsumer {
102  IndexingContext &IndexCtx;
103
104public:
105  explicit IndexingConsumer(IndexingContext &indexCtx)
106    : IndexCtx(indexCtx) { }
107
108  // ASTConsumer Implementation
109
110  virtual void Initialize(ASTContext &Context) {
111    IndexCtx.setASTContext(Context);
112    IndexCtx.startedTranslationUnit();
113  }
114
115  virtual void HandleTranslationUnit(ASTContext &Ctx) {
116  }
117
118  virtual bool HandleTopLevelDecl(DeclGroupRef DG) {
119    IndexCtx.indexDeclGroupRef(DG);
120    return !IndexCtx.shouldAbort();
121  }
122
123  /// \brief Handle the specified top-level declaration that occurred inside
124  /// and ObjC container.
125  virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
126    // They will be handled after the interface is seen first.
127    IndexCtx.addTUDeclInObjCContainer(D);
128  }
129
130  /// \brief This is called by the AST reader when deserializing things.
131  /// The default implementation forwards to HandleTopLevelDecl but we don't
132  /// care about them when indexing, so have an empty definition.
133  virtual void HandleInterestingDecl(DeclGroupRef D) {}
134};
135
136//===----------------------------------------------------------------------===//
137// CaptureDiagnosticConsumer
138//===----------------------------------------------------------------------===//
139
140class CaptureDiagnosticConsumer : public DiagnosticConsumer {
141  SmallVector<StoredDiagnostic, 4> Errors;
142public:
143
144  virtual void HandleDiagnostic(DiagnosticsEngine::Level level,
145                                const Diagnostic &Info) {
146    if (level >= DiagnosticsEngine::Error)
147      Errors.push_back(StoredDiagnostic(level, Info));
148  }
149
150  DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
151    return new IgnoringDiagConsumer();
152  }
153};
154
155//===----------------------------------------------------------------------===//
156// IndexingFrontendAction
157//===----------------------------------------------------------------------===//
158
159class IndexingFrontendAction : public ASTFrontendAction {
160  IndexingContext IndexCtx;
161
162public:
163  IndexingFrontendAction(CXClientData clientData,
164                         IndexerCallbacks &indexCallbacks,
165                         unsigned indexOptions,
166                         CXTranslationUnit cxTU)
167    : IndexCtx(clientData, indexCallbacks, indexOptions, cxTU) { }
168
169  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
170                                         StringRef InFile) {
171    IndexCtx.setASTContext(CI.getASTContext());
172    Preprocessor &PP = CI.getPreprocessor();
173    PP.addPPCallbacks(new IndexPPCallbacks(PP, IndexCtx));
174    return new IndexingConsumer(IndexCtx);
175  }
176
177  virtual TranslationUnitKind getTranslationUnitKind() { return TU_Prefix; }
178  virtual bool hasCodeCompletionSupport() const { return false; }
179};
180
181//===----------------------------------------------------------------------===//
182// clang_indexSourceFileUnit Implementation
183//===----------------------------------------------------------------------===//
184
185struct IndexSourceFileInfo {
186  CXIndexAction idxAction;
187  CXClientData client_data;
188  IndexerCallbacks *index_callbacks;
189  unsigned index_callbacks_size;
190  unsigned index_options;
191  const char *source_filename;
192  const char *const *command_line_args;
193  int num_command_line_args;
194  struct CXUnsavedFile *unsaved_files;
195  unsigned num_unsaved_files;
196  CXTranslationUnit *out_TU;
197  unsigned TU_options;
198  int result;
199};
200
201struct MemBufferOwner {
202  SmallVector<const llvm::MemoryBuffer *, 8> Buffers;
203
204  ~MemBufferOwner() {
205    for (SmallVectorImpl<const llvm::MemoryBuffer *>::iterator
206           I = Buffers.begin(), E = Buffers.end(); I != E; ++I)
207      delete *I;
208  }
209};
210
211} // anonymous namespace
212
213static void clang_indexSourceFile_Impl(void *UserData) {
214  IndexSourceFileInfo *ITUI =
215    static_cast<IndexSourceFileInfo*>(UserData);
216  CXIndex CIdx = (CXIndex)ITUI->idxAction;
217  CXClientData client_data = ITUI->client_data;
218  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
219  unsigned index_callbacks_size = ITUI->index_callbacks_size;
220  unsigned index_options = ITUI->index_options;
221  const char *source_filename = ITUI->source_filename;
222  const char * const *command_line_args = ITUI->command_line_args;
223  int num_command_line_args = ITUI->num_command_line_args;
224  struct CXUnsavedFile *unsaved_files = ITUI->unsaved_files;
225  unsigned num_unsaved_files = ITUI->num_unsaved_files;
226  CXTranslationUnit *out_TU  = ITUI->out_TU;
227  unsigned TU_options = ITUI->TU_options;
228  ITUI->result = 1; // init as error.
229
230  if (out_TU)
231    *out_TU = 0;
232  bool requestedToGetTU = (out_TU != 0);
233
234  if (!CIdx)
235    return;
236  if (!client_index_callbacks || index_callbacks_size == 0)
237    return;
238
239  IndexerCallbacks CB;
240  memset(&CB, 0, sizeof(CB));
241  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
242                                  ? index_callbacks_size : sizeof(CB);
243  memcpy(&CB, client_index_callbacks, ClientCBSize);
244
245  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
246
247  CaptureDiagnosticConsumer *CaptureDiag = new CaptureDiagnosticConsumer();
248
249  // Configure the diagnostics.
250  DiagnosticOptions DiagOpts;
251  llvm::IntrusiveRefCntPtr<DiagnosticsEngine>
252    Diags(CompilerInstance::createDiagnostics(DiagOpts, num_command_line_args,
253                                                command_line_args,
254                                                CaptureDiag,
255                                                /*ShouldOwnClient=*/true));
256
257  // Recover resources if we crash before exiting this function.
258  llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
259    llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
260    DiagCleanup(Diags.getPtr());
261
262  llvm::OwningPtr<std::vector<const char *> >
263    Args(new std::vector<const char*>());
264
265  // Recover resources if we crash before exiting this method.
266  llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
267    ArgsCleanup(Args.get());
268
269  Args->insert(Args->end(), command_line_args,
270               command_line_args + num_command_line_args);
271
272  // The 'source_filename' argument is optional.  If the caller does not
273  // specify it then it is assumed that the source file is specified
274  // in the actual argument list.
275  // Put the source file after command_line_args otherwise if '-x' flag is
276  // present it will be unused.
277  if (source_filename)
278    Args->push_back(source_filename);
279
280  llvm::IntrusiveRefCntPtr<CompilerInvocation>
281    CInvok(createInvocationFromCommandLine(*Args, Diags));
282
283  if (!CInvok)
284    return;
285
286  // Recover resources if we crash before exiting this function.
287  llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
288    llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
289    CInvokCleanup(CInvok.getPtr());
290
291  if (CInvok->getFrontendOpts().Inputs.empty())
292    return;
293
294  llvm::OwningPtr<MemBufferOwner> BufOwner(new MemBufferOwner());
295
296  // Recover resources if we crash before exiting this method.
297  llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner>
298    BufOwnerCleanup(BufOwner.get());
299
300  for (unsigned I = 0; I != num_unsaved_files; ++I) {
301    StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
302    const llvm::MemoryBuffer *Buffer
303      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
304    CInvok->getPreprocessorOpts().addRemappedFile(unsaved_files[I].Filename, Buffer);
305    BufOwner->Buffers.push_back(Buffer);
306  }
307
308  // Since libclang is primarily used by batch tools dealing with
309  // (often very broken) source code, where spell-checking can have a
310  // significant negative impact on performance (particularly when
311  // precompiled headers are involved), we disable it.
312  CInvok->getLangOpts()->SpellChecking = false;
313
314  if (!requestedToGetTU)
315    CInvok->getPreprocessorOpts().DetailedRecord = false;
316
317  ASTUnit *Unit = ASTUnit::create(CInvok.getPtr(), Diags,
318                                  /*CaptureDiagnostics=*/true);
319  llvm::OwningPtr<CXTUOwner> CXTU(new CXTUOwner(MakeCXTranslationUnit(Unit)));
320
321  // Recover resources if we crash before exiting this method.
322  llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
323    CXTUCleanup(CXTU.get());
324
325  llvm::OwningPtr<IndexingFrontendAction> IndexAction;
326  IndexAction.reset(new IndexingFrontendAction(client_data, CB,
327                                               index_options, CXTU->getTU()));
328
329  // Recover resources if we crash before exiting this method.
330  llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
331    IndexActionCleanup(IndexAction.get());
332
333  bool Persistent = requestedToGetTU;
334  StringRef ResourceFilesPath = CXXIdx->getClangResourcesPath();
335  bool OnlyLocalDecls = false;
336  bool CaptureDiagnostics = true;
337  bool PrecompilePreamble = false;
338  bool CacheCodeCompletionResults = false;
339  PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
340  PPOpts.DetailedRecord = false;
341  PPOpts.DetailedRecordIncludesNestedMacroExpansions = false;
342
343  if (requestedToGetTU) {
344    OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
345    PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
346    // FIXME: Add a flag for modules.
347    CacheCodeCompletionResults
348      = TU_options & CXTranslationUnit_CacheCompletionResults;
349    if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
350      PPOpts.DetailedRecord = true;
351      PPOpts.DetailedRecordIncludesNestedMacroExpansions
352          = (TU_options & CXTranslationUnit_NestedMacroExpansions);
353    }
354  }
355
356  Unit = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
357                                                       IndexAction.get(),
358                                                       Unit,
359                                                       Persistent,
360                                                       ResourceFilesPath,
361                                                       OnlyLocalDecls,
362                                                       CaptureDiagnostics,
363                                                       PrecompilePreamble,
364                                                    CacheCodeCompletionResults);
365  if (!Unit)
366    return;
367
368  // FIXME: Set state of the ASTUnit according to the TU_options.
369  if (out_TU)
370    *out_TU = CXTU->takeTU();
371
372  ITUI->result = 0; // success.
373}
374
375//===----------------------------------------------------------------------===//
376// clang_indexTranslationUnit Implementation
377//===----------------------------------------------------------------------===//
378
379namespace {
380
381struct IndexTranslationUnitInfo {
382  CXIndexAction idxAction;
383  CXClientData client_data;
384  IndexerCallbacks *index_callbacks;
385  unsigned index_callbacks_size;
386  unsigned index_options;
387  CXTranslationUnit TU;
388  int result;
389};
390
391} // anonymous namespace
392
393static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
394  Preprocessor &PP = Unit.getPreprocessor();
395  if (!PP.getPreprocessingRecord())
396    return;
397
398  PreprocessingRecord &PPRec = *PP.getPreprocessingRecord();
399
400  // FIXME: Only deserialize inclusion directives.
401  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
402  // that it depends on.
403
404  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
405  PreprocessingRecord::iterator I, E;
406  if (OnlyLocal) {
407    I = PPRec.local_begin();
408    E = PPRec.local_end();
409  } else {
410    I = PPRec.begin();
411    E = PPRec.end();
412  }
413
414  for (; I != E; ++I) {
415    PreprocessedEntity *PPE = *I;
416
417    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
418      IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(), ID->getFileName(),
419                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
420                     !ID->wasInQuotes());
421    }
422  }
423}
424
425static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
426  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
427  // that it depends on.
428
429  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
430
431  if (OnlyLocal) {
432    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
433                                  TLEnd = Unit.top_level_end();
434           TL != TLEnd; ++TL) {
435      IdxCtx.indexTopLevelDecl(*TL);
436      if (IdxCtx.shouldAbort())
437        return;
438    }
439
440  } else {
441    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
442    for (TranslationUnitDecl::decl_iterator
443           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
444      IdxCtx.indexTopLevelDecl(*I);
445      if (IdxCtx.shouldAbort())
446        return;
447    }
448  }
449}
450
451static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
452  // FIXME: Create a CXDiagnosticSet from TU;
453  // IdxCtx.handleDiagnosticSet(Set);
454}
455
456static void clang_indexTranslationUnit_Impl(void *UserData) {
457  IndexTranslationUnitInfo *ITUI =
458    static_cast<IndexTranslationUnitInfo*>(UserData);
459  CXTranslationUnit TU = ITUI->TU;
460  CXClientData client_data = ITUI->client_data;
461  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
462  unsigned index_callbacks_size = ITUI->index_callbacks_size;
463  unsigned index_options = ITUI->index_options;
464  ITUI->result = 1; // init as error.
465
466  if (!TU)
467    return;
468  if (!client_index_callbacks || index_callbacks_size == 0)
469    return;
470
471  IndexerCallbacks CB;
472  memset(&CB, 0, sizeof(CB));
473  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
474                                  ? index_callbacks_size : sizeof(CB);
475  memcpy(&CB, client_index_callbacks, ClientCBSize);
476
477  llvm::OwningPtr<IndexingContext> IndexCtx;
478  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
479
480  // Recover resources if we crash before exiting this method.
481  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
482    IndexCtxCleanup(IndexCtx.get());
483
484  llvm::OwningPtr<IndexingConsumer> IndexConsumer;
485  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
486
487  // Recover resources if we crash before exiting this method.
488  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
489    IndexConsumerCleanup(IndexConsumer.get());
490
491  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
492  if (!Unit)
493    return;
494
495  FileManager &FileMgr = Unit->getFileManager();
496
497  if (Unit->getOriginalSourceFileName().empty())
498    IndexCtx->enteredMainFile(0);
499  else
500    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
501
502  IndexConsumer->Initialize(Unit->getASTContext());
503
504  indexPreprocessingRecord(*Unit, *IndexCtx);
505  indexTranslationUnit(*Unit, *IndexCtx);
506  indexDiagnostics(TU, *IndexCtx);
507
508  ITUI->result = 0;
509}
510
511//===----------------------------------------------------------------------===//
512// libclang public APIs.
513//===----------------------------------------------------------------------===//
514
515extern "C" {
516
517int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
518  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
519}
520
521const CXIdxObjCContainerDeclInfo *
522clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
523  if (!DInfo)
524    return 0;
525
526  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
527  if (const ObjCContainerDeclInfo *
528        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
529    return &ContInfo->ObjCContDeclInfo;
530
531  return 0;
532}
533
534const CXIdxObjCInterfaceDeclInfo *
535clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
536  if (!DInfo)
537    return 0;
538
539  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
540  if (const ObjCInterfaceDeclInfo *
541        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
542    return &InterInfo->ObjCInterDeclInfo;
543
544  return 0;
545}
546
547const CXIdxObjCCategoryDeclInfo *
548clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
549  if (!DInfo)
550    return 0;
551
552  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
553  if (const ObjCCategoryDeclInfo *
554        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
555    return &CatInfo->ObjCCatDeclInfo;
556
557  return 0;
558}
559
560const CXIdxObjCProtocolRefListInfo *
561clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
562  if (!DInfo)
563    return 0;
564
565  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
566
567  if (const ObjCInterfaceDeclInfo *
568        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
569    return InterInfo->ObjCInterDeclInfo.protocols;
570
571  if (const ObjCProtocolDeclInfo *
572        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
573    return &ProtInfo->ObjCProtoRefListInfo;
574
575  return 0;
576}
577
578const CXIdxIBOutletCollectionAttrInfo *
579clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
580  if (!AInfo)
581    return 0;
582
583  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
584  if (const IBOutletCollectionInfo *
585        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
586    return &IBInfo->IBCollInfo;
587
588  return 0;
589}
590
591const CXIdxCXXClassDeclInfo *
592clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
593  if (!DInfo)
594    return 0;
595
596  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
597  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
598    return &ClassInfo->CXXClassInfo;
599
600  return 0;
601}
602
603CXIdxClientContainer
604clang_index_getClientContainer(const CXIdxContainerInfo *info) {
605  if (!info)
606    return 0;
607  ContainerInfo *Container = (ContainerInfo*)info;
608  return Container->IndexCtx->getClientContainerForDC(Container->DC);
609}
610
611void clang_index_setClientContainer(const CXIdxContainerInfo *info,
612                                    CXIdxClientContainer client) {
613  if (!info)
614    return;
615  ContainerInfo *Container = (ContainerInfo*)info;
616  Container->IndexCtx->addContainerInMap(Container->DC, client);
617}
618
619CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
620  if (!info)
621    return 0;
622  EntityInfo *Entity = (EntityInfo*)info;
623  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
624}
625
626void clang_index_setClientEntity(const CXIdxEntityInfo *info,
627                                 CXIdxClientEntity client) {
628  if (!info)
629    return;
630  EntityInfo *Entity = (EntityInfo*)info;
631  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
632}
633
634CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
635  // For now, CXIndexAction is featureless.
636  return CIdx;
637}
638
639void clang_IndexAction_dispose(CXIndexAction idxAction) {
640  // For now, CXIndexAction is featureless.
641}
642
643int clang_indexSourceFile(CXIndexAction idxAction,
644                          CXClientData client_data,
645                          IndexerCallbacks *index_callbacks,
646                          unsigned index_callbacks_size,
647                          unsigned index_options,
648                          const char *source_filename,
649                          const char * const *command_line_args,
650                          int num_command_line_args,
651                          struct CXUnsavedFile *unsaved_files,
652                          unsigned num_unsaved_files,
653                          CXTranslationUnit *out_TU,
654                          unsigned TU_options) {
655
656  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
657                               index_callbacks_size, index_options,
658                               source_filename, command_line_args,
659                               num_command_line_args, unsaved_files,
660                               num_unsaved_files, out_TU, TU_options, 0 };
661
662  if (getenv("LIBCLANG_NOTHREADS")) {
663    clang_indexSourceFile_Impl(&ITUI);
664    return ITUI.result;
665  }
666
667  llvm::CrashRecoveryContext CRC;
668
669  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
670    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
671    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
672    fprintf(stderr, "  'command_line_args' : [");
673    for (int i = 0; i != num_command_line_args; ++i) {
674      if (i)
675        fprintf(stderr, ", ");
676      fprintf(stderr, "'%s'", command_line_args[i]);
677    }
678    fprintf(stderr, "],\n");
679    fprintf(stderr, "  'unsaved_files' : [");
680    for (unsigned i = 0; i != num_unsaved_files; ++i) {
681      if (i)
682        fprintf(stderr, ", ");
683      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
684              unsaved_files[i].Length);
685    }
686    fprintf(stderr, "],\n");
687    fprintf(stderr, "  'options' : %d,\n", TU_options);
688    fprintf(stderr, "}\n");
689
690    return 1;
691  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
692    if (out_TU)
693      PrintLibclangResourceUsage(*out_TU);
694  }
695
696  return ITUI.result;
697}
698
699int clang_indexTranslationUnit(CXIndexAction idxAction,
700                               CXClientData client_data,
701                               IndexerCallbacks *index_callbacks,
702                               unsigned index_callbacks_size,
703                               unsigned index_options,
704                               CXTranslationUnit TU) {
705
706  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
707                                    index_callbacks_size, index_options, TU,
708                                    0 };
709
710  if (getenv("LIBCLANG_NOTHREADS")) {
711    clang_indexTranslationUnit_Impl(&ITUI);
712    return ITUI.result;
713  }
714
715  llvm::CrashRecoveryContext CRC;
716
717  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
718    fprintf(stderr, "libclang: crash detected during indexing TU\n");
719
720    return 1;
721  }
722
723  return ITUI.result;
724}
725
726void clang_indexLoc_getFileLocation(CXIdxLoc location,
727                                    CXIdxClientFile *indexFile,
728                                    CXFile *file,
729                                    unsigned *line,
730                                    unsigned *column,
731                                    unsigned *offset) {
732  if (indexFile) *indexFile = 0;
733  if (file)   *file = 0;
734  if (line)   *line = 0;
735  if (column) *column = 0;
736  if (offset) *offset = 0;
737
738  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
739  if (!location.ptr_data[0] || Loc.isInvalid())
740    return;
741
742  IndexingContext &IndexCtx =
743      *static_cast<IndexingContext*>(location.ptr_data[0]);
744  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
745}
746
747CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
748  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
749  if (!location.ptr_data[0] || Loc.isInvalid())
750    return clang_getNullLocation();
751
752  IndexingContext &IndexCtx =
753      *static_cast<IndexingContext*>(location.ptr_data[0]);
754  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
755}
756
757} // end: extern "C"
758
759