Indexing.cpp revision 1f6b2b5c82b2d2d3935b0db76352a04e9877b73f 
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
140//===----------------------------------------------------------------------===//
141// CaptureDiagnosticConsumer
142//===----------------------------------------------------------------------===//
143
144class CaptureDiagnosticConsumer : public DiagnosticConsumer {
145  SmallVector<StoredDiagnostic, 4> Errors;
146public:
147
148  virtual void HandleDiagnostic(DiagnosticsEngine::Level level,
149                                const Diagnostic &Info) {
150    if (level >= DiagnosticsEngine::Error)
151      Errors.push_back(StoredDiagnostic(level, Info));
152  }
153
154  DiagnosticConsumer *clone(DiagnosticsEngine &Diags) const {
155    return new IgnoringDiagConsumer();
156  }
157};
158
159//===----------------------------------------------------------------------===//
160// IndexingFrontendAction
161//===----------------------------------------------------------------------===//
162
163class IndexingFrontendAction : public ASTFrontendAction {
164  IndexingContext IndexCtx;
165  CXTranslationUnit CXTU;
166
167public:
168  IndexingFrontendAction(CXClientData clientData,
169                         IndexerCallbacks &indexCallbacks,
170                         unsigned indexOptions,
171                         CXTranslationUnit cxTU)
172    : IndexCtx(clientData, indexCallbacks, indexOptions, cxTU),
173      CXTU(cxTU) { }
174
175  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
176                                         StringRef InFile) {
177    IndexCtx.setASTContext(CI.getASTContext());
178    Preprocessor &PP = CI.getPreprocessor();
179    PP.addPPCallbacks(new IndexPPCallbacks(PP, IndexCtx));
180    IndexCtx.setPreprocessor(PP);
181    return new IndexingConsumer(IndexCtx);
182  }
183
184  virtual void EndSourceFileAction() {
185    indexDiagnostics(CXTU, IndexCtx);
186  }
187
188  virtual TranslationUnitKind getTranslationUnitKind() { return TU_Prefix; }
189  virtual bool hasCodeCompletionSupport() const { return false; }
190};
191
192//===----------------------------------------------------------------------===//
193// clang_indexSourceFileUnit Implementation
194//===----------------------------------------------------------------------===//
195
196struct IndexSourceFileInfo {
197  CXIndexAction idxAction;
198  CXClientData client_data;
199  IndexerCallbacks *index_callbacks;
200  unsigned index_callbacks_size;
201  unsigned index_options;
202  const char *source_filename;
203  const char *const *command_line_args;
204  int num_command_line_args;
205  struct CXUnsavedFile *unsaved_files;
206  unsigned num_unsaved_files;
207  CXTranslationUnit *out_TU;
208  unsigned TU_options;
209  int result;
210};
211
212struct MemBufferOwner {
213  SmallVector<const llvm::MemoryBuffer *, 8> Buffers;
214
215  ~MemBufferOwner() {
216    for (SmallVectorImpl<const llvm::MemoryBuffer *>::iterator
217           I = Buffers.begin(), E = Buffers.end(); I != E; ++I)
218      delete *I;
219  }
220};
221
222} // anonymous namespace
223
224static void clang_indexSourceFile_Impl(void *UserData) {
225  IndexSourceFileInfo *ITUI =
226    static_cast<IndexSourceFileInfo*>(UserData);
227  CXIndex CIdx = (CXIndex)ITUI->idxAction;
228  CXClientData client_data = ITUI->client_data;
229  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
230  unsigned index_callbacks_size = ITUI->index_callbacks_size;
231  unsigned index_options = ITUI->index_options;
232  const char *source_filename = ITUI->source_filename;
233  const char * const *command_line_args = ITUI->command_line_args;
234  int num_command_line_args = ITUI->num_command_line_args;
235  struct CXUnsavedFile *unsaved_files = ITUI->unsaved_files;
236  unsigned num_unsaved_files = ITUI->num_unsaved_files;
237  CXTranslationUnit *out_TU  = ITUI->out_TU;
238  unsigned TU_options = ITUI->TU_options;
239  ITUI->result = 1; // init as error.
240
241  if (out_TU)
242    *out_TU = 0;
243  bool requestedToGetTU = (out_TU != 0);
244
245  if (!CIdx)
246    return;
247  if (!client_index_callbacks || index_callbacks_size == 0)
248    return;
249
250  IndexerCallbacks CB;
251  memset(&CB, 0, sizeof(CB));
252  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
253                                  ? index_callbacks_size : sizeof(CB);
254  memcpy(&CB, client_index_callbacks, ClientCBSize);
255
256  CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
257
258  CaptureDiagnosticConsumer *CaptureDiag = new CaptureDiagnosticConsumer();
259
260  // Configure the diagnostics.
261  DiagnosticOptions DiagOpts;
262  llvm::IntrusiveRefCntPtr<DiagnosticsEngine>
263    Diags(CompilerInstance::createDiagnostics(DiagOpts, num_command_line_args,
264                                                command_line_args,
265                                                CaptureDiag,
266                                                /*ShouldOwnClient=*/true,
267                                                /*ShouldCloneClient=*/false));
268
269  // Recover resources if we crash before exiting this function.
270  llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
271    llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
272    DiagCleanup(Diags.getPtr());
273
274  llvm::OwningPtr<std::vector<const char *> >
275    Args(new std::vector<const char*>());
276
277  // Recover resources if we crash before exiting this method.
278  llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
279    ArgsCleanup(Args.get());
280
281  Args->insert(Args->end(), command_line_args,
282               command_line_args + num_command_line_args);
283
284  // The 'source_filename' argument is optional.  If the caller does not
285  // specify it then it is assumed that the source file is specified
286  // in the actual argument list.
287  // Put the source file after command_line_args otherwise if '-x' flag is
288  // present it will be unused.
289  if (source_filename)
290    Args->push_back(source_filename);
291
292  llvm::IntrusiveRefCntPtr<CompilerInvocation>
293    CInvok(createInvocationFromCommandLine(*Args, Diags));
294
295  if (!CInvok)
296    return;
297
298  // Recover resources if we crash before exiting this function.
299  llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
300    llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
301    CInvokCleanup(CInvok.getPtr());
302
303  if (CInvok->getFrontendOpts().Inputs.empty())
304    return;
305
306  llvm::OwningPtr<MemBufferOwner> BufOwner(new MemBufferOwner());
307
308  // Recover resources if we crash before exiting this method.
309  llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner>
310    BufOwnerCleanup(BufOwner.get());
311
312  for (unsigned I = 0; I != num_unsaved_files; ++I) {
313    StringRef Data(unsaved_files[I].Contents, unsaved_files[I].Length);
314    const llvm::MemoryBuffer *Buffer
315      = llvm::MemoryBuffer::getMemBufferCopy(Data, unsaved_files[I].Filename);
316    CInvok->getPreprocessorOpts().addRemappedFile(unsaved_files[I].Filename, Buffer);
317    BufOwner->Buffers.push_back(Buffer);
318  }
319
320  // Since libclang is primarily used by batch tools dealing with
321  // (often very broken) source code, where spell-checking can have a
322  // significant negative impact on performance (particularly when
323  // precompiled headers are involved), we disable it.
324  CInvok->getLangOpts()->SpellChecking = false;
325
326  if (!requestedToGetTU)
327    CInvok->getPreprocessorOpts().DetailedRecord = false;
328
329  ASTUnit *Unit = ASTUnit::create(CInvok.getPtr(), Diags,
330                                  /*CaptureDiagnostics=*/true);
331  llvm::OwningPtr<CXTUOwner> CXTU(new CXTUOwner(MakeCXTranslationUnit(Unit)));
332
333  // Recover resources if we crash before exiting this method.
334  llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
335    CXTUCleanup(CXTU.get());
336
337  llvm::OwningPtr<IndexingFrontendAction> IndexAction;
338  IndexAction.reset(new IndexingFrontendAction(client_data, CB,
339                                               index_options, CXTU->getTU()));
340
341  // Recover resources if we crash before exiting this method.
342  llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
343    IndexActionCleanup(IndexAction.get());
344
345  bool Persistent = requestedToGetTU;
346  StringRef ResourceFilesPath = CXXIdx->getClangResourcesPath();
347  bool OnlyLocalDecls = false;
348  bool PrecompilePreamble = false;
349  bool CacheCodeCompletionResults = false;
350  PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
351  PPOpts.DetailedRecord = false;
352  PPOpts.DetailedRecordIncludesNestedMacroExpansions = false;
353
354  if (requestedToGetTU) {
355    OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
356    PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
357    // FIXME: Add a flag for modules.
358    CacheCodeCompletionResults
359      = TU_options & CXTranslationUnit_CacheCompletionResults;
360    if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
361      PPOpts.DetailedRecord = true;
362      PPOpts.DetailedRecordIncludesNestedMacroExpansions
363          = (TU_options & CXTranslationUnit_NestedMacroExpansions);
364    }
365  }
366
367  Unit = ASTUnit::LoadFromCompilerInvocationAction(CInvok.getPtr(), Diags,
368                                                       IndexAction.get(),
369                                                       Unit,
370                                                       Persistent,
371                                                       ResourceFilesPath,
372                                                       OnlyLocalDecls,
373                                                    /*CaptureDiagnostics=*/true,
374                                                       PrecompilePreamble,
375                                                    CacheCodeCompletionResults);
376  if (!Unit)
377    return;
378
379  if (out_TU)
380    *out_TU = CXTU->takeTU();
381
382  ITUI->result = 0; // success.
383}
384
385//===----------------------------------------------------------------------===//
386// clang_indexTranslationUnit Implementation
387//===----------------------------------------------------------------------===//
388
389namespace {
390
391struct IndexTranslationUnitInfo {
392  CXIndexAction idxAction;
393  CXClientData client_data;
394  IndexerCallbacks *index_callbacks;
395  unsigned index_callbacks_size;
396  unsigned index_options;
397  CXTranslationUnit TU;
398  int result;
399};
400
401} // anonymous namespace
402
403static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
404  Preprocessor &PP = Unit.getPreprocessor();
405  if (!PP.getPreprocessingRecord())
406    return;
407
408  PreprocessingRecord &PPRec = *PP.getPreprocessingRecord();
409
410  // FIXME: Only deserialize inclusion directives.
411  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
412  // that it depends on.
413
414  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
415  PreprocessingRecord::iterator I, E;
416  if (OnlyLocal) {
417    I = PPRec.local_begin();
418    E = PPRec.local_end();
419  } else {
420    I = PPRec.begin();
421    E = PPRec.end();
422  }
423
424  for (; I != E; ++I) {
425    PreprocessedEntity *PPE = *I;
426
427    if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
428      IdxCtx.ppIncludedFile(ID->getSourceRange().getBegin(), ID->getFileName(),
429                     ID->getFile(), ID->getKind() == InclusionDirective::Import,
430                     !ID->wasInQuotes());
431    }
432  }
433}
434
435static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
436  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
437  // that it depends on.
438
439  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();
440
441  if (OnlyLocal) {
442    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
443                                  TLEnd = Unit.top_level_end();
444           TL != TLEnd; ++TL) {
445      IdxCtx.indexTopLevelDecl(*TL);
446      if (IdxCtx.shouldAbort())
447        return;
448    }
449
450  } else {
451    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
452    for (TranslationUnitDecl::decl_iterator
453           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
454      IdxCtx.indexTopLevelDecl(*I);
455      if (IdxCtx.shouldAbort())
456        return;
457    }
458  }
459}
460
461static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
462  if (!IdxCtx.hasDiagnosticCallback())
463    return;
464
465  CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
466  IdxCtx.handleDiagnosticSet(DiagSet);
467}
468
469static void clang_indexTranslationUnit_Impl(void *UserData) {
470  IndexTranslationUnitInfo *ITUI =
471    static_cast<IndexTranslationUnitInfo*>(UserData);
472  CXTranslationUnit TU = ITUI->TU;
473  CXClientData client_data = ITUI->client_data;
474  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
475  unsigned index_callbacks_size = ITUI->index_callbacks_size;
476  unsigned index_options = ITUI->index_options;
477  ITUI->result = 1; // init as error.
478
479  if (!TU)
480    return;
481  if (!client_index_callbacks || index_callbacks_size == 0)
482    return;
483
484  IndexerCallbacks CB;
485  memset(&CB, 0, sizeof(CB));
486  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
487                                  ? index_callbacks_size : sizeof(CB);
488  memcpy(&CB, client_index_callbacks, ClientCBSize);
489
490  llvm::OwningPtr<IndexingContext> IndexCtx;
491  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
492
493  // Recover resources if we crash before exiting this method.
494  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
495    IndexCtxCleanup(IndexCtx.get());
496
497  llvm::OwningPtr<IndexingConsumer> IndexConsumer;
498  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));
499
500  // Recover resources if we crash before exiting this method.
501  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
502    IndexConsumerCleanup(IndexConsumer.get());
503
504  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
505  if (!Unit)
506    return;
507
508  FileManager &FileMgr = Unit->getFileManager();
509
510  if (Unit->getOriginalSourceFileName().empty())
511    IndexCtx->enteredMainFile(0);
512  else
513    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
514
515  IndexConsumer->Initialize(Unit->getASTContext());
516
517  indexPreprocessingRecord(*Unit, *IndexCtx);
518  indexTranslationUnit(*Unit, *IndexCtx);
519  indexDiagnostics(TU, *IndexCtx);
520
521  ITUI->result = 0;
522}
523
524//===----------------------------------------------------------------------===//
525// libclang public APIs.
526//===----------------------------------------------------------------------===//
527
528extern "C" {
529
530int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
531  return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
532}
533
534const CXIdxObjCContainerDeclInfo *
535clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
536  if (!DInfo)
537    return 0;
538
539  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
540  if (const ObjCContainerDeclInfo *
541        ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
542    return &ContInfo->ObjCContDeclInfo;
543
544  return 0;
545}
546
547const CXIdxObjCInterfaceDeclInfo *
548clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
549  if (!DInfo)
550    return 0;
551
552  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
553  if (const ObjCInterfaceDeclInfo *
554        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
555    return &InterInfo->ObjCInterDeclInfo;
556
557  return 0;
558}
559
560const CXIdxObjCCategoryDeclInfo *
561clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
562  if (!DInfo)
563    return 0;
564
565  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
566  if (const ObjCCategoryDeclInfo *
567        CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
568    return &CatInfo->ObjCCatDeclInfo;
569
570  return 0;
571}
572
573const CXIdxObjCProtocolRefListInfo *
574clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
575  if (!DInfo)
576    return 0;
577
578  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
579
580  if (const ObjCInterfaceDeclInfo *
581        InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
582    return InterInfo->ObjCInterDeclInfo.protocols;
583
584  if (const ObjCProtocolDeclInfo *
585        ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
586    return &ProtInfo->ObjCProtoRefListInfo;
587
588  if (const ObjCCategoryDeclInfo *CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
589    return CatInfo->ObjCCatDeclInfo.protocols;
590
591  return 0;
592}
593
594const CXIdxIBOutletCollectionAttrInfo *
595clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
596  if (!AInfo)
597    return 0;
598
599  const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
600  if (const IBOutletCollectionInfo *
601        IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
602    return &IBInfo->IBCollInfo;
603
604  return 0;
605}
606
607const CXIdxCXXClassDeclInfo *
608clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
609  if (!DInfo)
610    return 0;
611
612  const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
613  if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
614    return &ClassInfo->CXXClassInfo;
615
616  return 0;
617}
618
619CXIdxClientContainer
620clang_index_getClientContainer(const CXIdxContainerInfo *info) {
621  if (!info)
622    return 0;
623  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
624  return Container->IndexCtx->getClientContainerForDC(Container->DC);
625}
626
627void clang_index_setClientContainer(const CXIdxContainerInfo *info,
628                                    CXIdxClientContainer client) {
629  if (!info)
630    return;
631  const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
632  Container->IndexCtx->addContainerInMap(Container->DC, client);
633}
634
635CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
636  if (!info)
637    return 0;
638  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
639  return Entity->IndexCtx->getClientEntity(Entity->Dcl);
640}
641
642void clang_index_setClientEntity(const CXIdxEntityInfo *info,
643                                 CXIdxClientEntity client) {
644  if (!info)
645    return;
646  const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
647  Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
648}
649
650CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
651  // For now, CXIndexAction is featureless.
652  return CIdx;
653}
654
655void clang_IndexAction_dispose(CXIndexAction idxAction) {
656  // For now, CXIndexAction is featureless.
657}
658
659int clang_indexSourceFile(CXIndexAction idxAction,
660                          CXClientData client_data,
661                          IndexerCallbacks *index_callbacks,
662                          unsigned index_callbacks_size,
663                          unsigned index_options,
664                          const char *source_filename,
665                          const char * const *command_line_args,
666                          int num_command_line_args,
667                          struct CXUnsavedFile *unsaved_files,
668                          unsigned num_unsaved_files,
669                          CXTranslationUnit *out_TU,
670                          unsigned TU_options) {
671
672  IndexSourceFileInfo ITUI = { idxAction, client_data, index_callbacks,
673                               index_callbacks_size, index_options,
674                               source_filename, command_line_args,
675                               num_command_line_args, unsaved_files,
676                               num_unsaved_files, out_TU, TU_options, 0 };
677
678  if (getenv("LIBCLANG_NOTHREADS")) {
679    clang_indexSourceFile_Impl(&ITUI);
680    return ITUI.result;
681  }
682
683  llvm::CrashRecoveryContext CRC;
684
685  if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
686    fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
687    fprintf(stderr, "  'source_filename' : '%s'\n", source_filename);
688    fprintf(stderr, "  'command_line_args' : [");
689    for (int i = 0; i != num_command_line_args; ++i) {
690      if (i)
691        fprintf(stderr, ", ");
692      fprintf(stderr, "'%s'", command_line_args[i]);
693    }
694    fprintf(stderr, "],\n");
695    fprintf(stderr, "  'unsaved_files' : [");
696    for (unsigned i = 0; i != num_unsaved_files; ++i) {
697      if (i)
698        fprintf(stderr, ", ");
699      fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
700              unsaved_files[i].Length);
701    }
702    fprintf(stderr, "],\n");
703    fprintf(stderr, "  'options' : %d,\n", TU_options);
704    fprintf(stderr, "}\n");
705
706    return 1;
707  } else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
708    if (out_TU)
709      PrintLibclangResourceUsage(*out_TU);
710  }
711
712  return ITUI.result;
713}
714
715int clang_indexTranslationUnit(CXIndexAction idxAction,
716                               CXClientData client_data,
717                               IndexerCallbacks *index_callbacks,
718                               unsigned index_callbacks_size,
719                               unsigned index_options,
720                               CXTranslationUnit TU) {
721
722  IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
723                                    index_callbacks_size, index_options, TU,
724                                    0 };
725
726  if (getenv("LIBCLANG_NOTHREADS")) {
727    clang_indexTranslationUnit_Impl(&ITUI);
728    return ITUI.result;
729  }
730
731  llvm::CrashRecoveryContext CRC;
732
733  if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
734    fprintf(stderr, "libclang: crash detected during indexing TU\n");
735
736    return 1;
737  }
738
739  return ITUI.result;
740}
741
742void clang_indexLoc_getFileLocation(CXIdxLoc location,
743                                    CXIdxClientFile *indexFile,
744                                    CXFile *file,
745                                    unsigned *line,
746                                    unsigned *column,
747                                    unsigned *offset) {
748  if (indexFile) *indexFile = 0;
749  if (file)   *file = 0;
750  if (line)   *line = 0;
751  if (column) *column = 0;
752  if (offset) *offset = 0;
753
754  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
755  if (!location.ptr_data[0] || Loc.isInvalid())
756    return;
757
758  IndexingContext &IndexCtx =
759      *static_cast<IndexingContext*>(location.ptr_data[0]);
760  IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
761}
762
763CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
764  SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
765  if (!location.ptr_data[0] || Loc.isInvalid())
766    return clang_getNullLocation();
767
768  IndexingContext &IndexCtx =
769      *static_cast<IndexingContext*>(location.ptr_data[0]);
770  return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
771}
772
773} // end: extern "C"
774
775