C++ ASTUnit::getASTContext方法代码示例

 CXCompletionString clang_getCursorCompletionString(CXCursor cursor) {
     enum CXCursorKind kind = clang_getCursorKind(cursor);
     if (clang_isDeclaration(kind)) {
         const Decl *decl = getCursorDecl(cursor);
         if (const NamedDecl *namedDecl = dyn_cast_or_null<NamedDecl>(decl)) {
             ASTUnit *unit = getCursorASTUnit(cursor);
             CodeCompletionResult Result(namedDecl, CCP_Declaration);
             CodeCompletionString *String
                 = Result.CreateCodeCompletionString(unit->getASTContext(),
                                                     unit->getPreprocessor(),
                                                     unit->getCodeCompletionTUInfo().getAllocator(),
                                                     unit->getCodeCompletionTUInfo(),
                                                     true);
             return String;
         }
     }
     else if (kind == CXCursor_MacroDefinition) {
         const MacroDefinition *definition = getCursorMacroDefinition(cursor);
         const IdentifierInfo *MacroInfo = definition->getName();
         ASTUnit *unit = getCursorASTUnit(cursor);
         CodeCompletionResult Result(MacroInfo);
         CodeCompletionString *String
             = Result.CreateCodeCompletionString(unit->getASTContext(),
                                                 unit->getPreprocessor(),
                                                 unit->getCodeCompletionTUInfo().getAllocator(),
                                                 unit->getCodeCompletionTUInfo(),
                                                 false);
         return String;
     }
     return NULL;
 }

CXString clang_getDeclObjCTypeEncoding(CXCursor C) {
  if ((C.kind < CXCursor_FirstDecl) || (C.kind > CXCursor_LastDecl))
    return cxstring::createCXString("");

  Decl *D = static_cast<Decl*>(C.data[0]);
  CXTranslationUnit TU = static_cast<CXTranslationUnit>(C.data[2]);
  ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
  ASTContext &Ctx = AU->getASTContext();
  std::string encoding;

  if (ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))  {
    if (Ctx.getObjCEncodingForMethodDecl(OMD, encoding))
      return cxstring::createCXString("?");
  } else if (ObjCPropertyDecl *OPD = dyn_cast<ObjCPropertyDecl>(D)) 
    Ctx.getObjCEncodingForPropertyDecl(OPD, NULL, encoding);
  else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
    Ctx.getObjCEncodingForFunctionDecl(FD, encoding);
  else {
    QualType Ty;
    if (TypeDecl *TD = dyn_cast<TypeDecl>(D))
      Ty = Ctx.getTypeDeclType(TD);
    if (ValueDecl *VD = dyn_cast<ValueDecl>(D))
      Ty = VD->getType();
    else return cxstring::createCXString("?");
    Ctx.getObjCEncodingForType(Ty, encoding);
  }

  return cxstring::createCXString(encoding);
}

static void clang_indexTranslationUnit_Impl(void *UserData) {
  IndexTranslationUnitInfo *ITUI =
    static_cast<IndexTranslationUnitInfo*>(UserData);
  CXTranslationUnit TU = ITUI->TU;
  CXClientData client_data = ITUI->client_data;
  IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
  unsigned index_callbacks_size = ITUI->index_callbacks_size;
  unsigned index_options = ITUI->index_options;
  ITUI->result = 1; // init as error.

  if (!TU)
    return;
  if (!client_index_callbacks || index_callbacks_size == 0)
    return;

  CIndexer *CXXIdx = (CIndexer*)TU->CIdx;
  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
    setThreadBackgroundPriority();

  IndexerCallbacks CB;
  memset(&CB, 0, sizeof(CB));
  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
                                  ? index_callbacks_size : sizeof(CB);
  memcpy(&CB, client_index_callbacks, ClientCBSize);

  OwningPtr<IndexingContext> IndexCtx;
  IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));

  // Recover resources if we crash before exiting this method.
  llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
    IndexCtxCleanup(IndexCtx.get());

  OwningPtr<IndexingConsumer> IndexConsumer;
  IndexConsumer.reset(new IndexingConsumer(*IndexCtx));

  // Recover resources if we crash before exiting this method.
  llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
    IndexConsumerCleanup(IndexConsumer.get());

  ASTUnit *Unit = static_cast<ASTUnit *>(TU->TUData);
  if (!Unit)
    return;

  ASTUnit::ConcurrencyCheck Check(*Unit);

  FileManager &FileMgr = Unit->getFileManager();

  if (Unit->getOriginalSourceFileName().empty())
    IndexCtx->enteredMainFile(0);
  else
    IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));

  IndexConsumer->Initialize(Unit->getASTContext());

  indexPreprocessingRecord(*Unit, *IndexCtx);
  indexTranslationUnit(*Unit, *IndexCtx);
  indexDiagnostics(TU, *IndexCtx);

  ITUI->result = 0;
}

ASTContext& CursorHelper::getASTContext(CXCursor node)
{
  ASTUnit *astUnit =
    static_cast<ASTUnit *>(
      static_cast<CXTranslationUnit>(node.data[2])->TUData);
  return astUnit->getASTContext();
}

CXSourceLocation lfort_getLocation(CXProgram tu,
                                   CXFile file,
                                   unsigned line,
                                   unsigned column) {
  if (!tu || !file)
    return lfort_getNullLocation();
  
  bool Logging = ::getenv("LIBLFORT_LOGGING");
  ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu->PgmData);
  ASTUnit::ConcurrencyCheck Check(*CXXUnit);
  const FileEntry *File = static_cast<const FileEntry *>(file);
  SourceLocation SLoc = CXXUnit->getLocation(File, line, column);
  if (SLoc.isInvalid()) {
    if (Logging)
      llvm::errs() << "lfort_getLocation(\"" << File->getName() 
      << "\", " << line << ", " << column << ") = invalid\n";
    return lfort_getNullLocation();
  }
  
  if (Logging)
    llvm::errs() << "lfort_getLocation(\"" << File->getName() 
    << "\", " << line << ", " << column << ") = " 
    << SLoc.getRawEncoding() << "\n";
  
  return cxloc::translateSourceLocation(CXXUnit->getASTContext(), SLoc);
}

static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
  // FIXME: Only deserialize stuff from the last chained PCH, not the PCH/Module
  // that it depends on.

  bool OnlyLocal = !Unit.isMainFileAST() && Unit.getOnlyLocalDecls();

  if (OnlyLocal) {
    for (ASTUnit::top_level_iterator TL = Unit.top_level_begin(),
                                  TLEnd = Unit.top_level_end();
           TL != TLEnd; ++TL) {
      IdxCtx.indexTopLevelDecl(*TL);
      if (IdxCtx.shouldAbort())
        return;
    }

  } else {
    TranslationUnitDecl *TUDecl = Unit.getASTContext().getTranslationUnitDecl();
    for (TranslationUnitDecl::decl_iterator
           I = TUDecl->decls_begin(), E = TUDecl->decls_end(); I != E; ++I) {
      IdxCtx.indexTopLevelDecl(*I);
      if (IdxCtx.shouldAbort())
        return;
    }
  }
}

void index::indexASTUnit(ASTUnit &Unit,
                         std::shared_ptr<IndexDataConsumer> DataConsumer,
                         IndexingOptions Opts) {
  IndexingContext IndexCtx(Opts, *DataConsumer);
  IndexCtx.setASTContext(Unit.getASTContext());
  indexTranslationUnit(Unit, IndexCtx);
}

CXString clang_getDeclObjCTypeEncoding(CXCursor C) {
  if (!clang_isDeclaration(C.kind))
    return cxstring::createCXString("");

  const Decl *D = static_cast<const Decl*>(C.data[0]);
  ASTUnit *AU = cxcursor::getCursorASTUnit(C);
  ASTContext &Ctx = AU->getASTContext();
  std::string encoding;

  if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D))  {
    if (Ctx.getObjCEncodingForMethodDecl(OMD, encoding))
      return cxstring::createCXString("?");
  } else if (const ObjCPropertyDecl *OPD = dyn_cast<ObjCPropertyDecl>(D))
    Ctx.getObjCEncodingForPropertyDecl(OPD, NULL, encoding);
  else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
    Ctx.getObjCEncodingForFunctionDecl(FD, encoding);
  else {
    QualType Ty;
    if (const TypeDecl *TD = dyn_cast<TypeDecl>(D))
      Ty = Ctx.getTypeDeclType(TD);
    if (const ValueDecl *VD = dyn_cast<ValueDecl>(D))
      Ty = VD->getType();
    else return cxstring::createCXString("?");
    Ctx.getObjCEncodingForType(Ty, encoding);
  }

  return cxstring::createCXString(encoding);
}

std::vector<ASTMemoryUsage> TranslationUnitManager::GetMemoryUsageForProjectFile(ProjectFile* file)
{
    ASTUnit* tu = GetASTUnitForProjectFile(file);
    std::vector<ASTMemoryUsage> usages;
    if (tu)
    {
        //AST Context
        ASTContext& ctx = tu->getASTContext();
        usages.emplace_back(AST_Nodes, ctx.getASTAllocatedMemory());
        usages.emplace_back(AST_Identifiers, ctx.Idents.getAllocator().getTotalMemory());
        usages.emplace_back(AST_Selectors, ctx.Selectors.getTotalMemory());
        usages.emplace_back(AST_SideTables, ctx.getSideTableAllocatedMemory());

        //Source Manager
        usages.emplace_back(SM_ContentCache, ctx.getSourceManager().getContentCacheSize());
        const SourceManager::MemoryBufferSizes& srcBufs = tu->getSourceManager().getMemoryBufferSizes();
        usages.emplace_back(SM_Malloc, srcBufs.malloc_bytes);
        usages.emplace_back(SM_Mmap, srcBufs.mmap_bytes);
        usages.emplace_back(SM_DataStructures, tu->getSourceManager().getDataStructureSizes());
        // Preprocessor
        Preprocessor& PP = tu->getPreprocessor();
        usages.emplace_back(PP_Total, PP.getTotalMemory());
        usages.emplace_back(PP_HeaderSearch, PP.getHeaderSearchInfo().getTotalMemory());
        if (PP.getPreprocessorOpts().DetailedRecord)
            usages.emplace_back(ASTMemoryUsage(PP_PreprocessingRecord, PP.getPreprocessingRecord()->getTotalMemory()));
    }
    return usages;
}

CXSourceLocation clang_getLocation(CXTranslationUnit TU,
                                   CXFile file,
                                   unsigned line,
                                   unsigned column) {
  if (cxtu::isNotUsableTU(TU)) {
    LOG_BAD_TU(TU);
    return clang_getNullLocation();
  }
  if (!file)
    return clang_getNullLocation();
  if (line == 0 || column == 0)
    return clang_getNullLocation();
  
  LogRef Log = Logger::make(__func__);
  ASTUnit *CXXUnit = cxtu::getASTUnit(TU);
  ASTUnit::ConcurrencyCheck Check(*CXXUnit);
  const FileEntry *File = static_cast<const FileEntry *>(file);
  SourceLocation SLoc = CXXUnit->getLocation(File, line, column);
  if (SLoc.isInvalid()) {
    if (Log)
      *Log << llvm::format("(\"%s\", %d, %d) = invalid",
                           File->getName().str().c_str(), line, column);
    return clang_getNullLocation();
  }
  
  CXSourceLocation CXLoc =
      cxloc::translateSourceLocation(CXXUnit->getASTContext(), SLoc);
  if (Log)
    *Log << llvm::format("(\"%s\", %d, %d) = ", File->getName().str().c_str(),
                         line, column)
         << CXLoc;

  return CXLoc;
}

CXDiagnostic clang_getDiagnostic(CXTranslationUnit Unit, unsigned Index) {
  ASTUnit *CXXUnit = static_cast<ASTUnit *>(Unit->TUData);
  if (!CXXUnit || Index >= CXXUnit->stored_diag_size())
    return 0;

  return new CXStoredDiagnostic(CXXUnit->stored_diag_begin()[Index],
                                CXXUnit->getASTContext().getLangOptions());
}

void ASTMergeAction::ExecuteAction() {
  CompilerInstance &CI = getCompilerInstance();
  CI.getDiagnostics().getClient()->BeginSourceFile(
                                             CI.getASTContext().getLangOpts());
  CI.getDiagnostics().SetArgToStringFn(&FormatASTNodeDiagnosticArgument,
                                       &CI.getASTContext());
  IntrusiveRefCntPtr<DiagnosticIDs>
      DiagIDs(CI.getDiagnostics().getDiagnosticIDs());
  for (unsigned I = 0, N = ASTFiles.size(); I != N; ++I) {
    IntrusiveRefCntPtr<DiagnosticsEngine>
        Diags(new DiagnosticsEngine(DiagIDs, &CI.getDiagnosticOpts(),
                                    new ForwardingDiagnosticConsumer(
                                          *CI.getDiagnostics().getClient()),
                                    /*ShouldOwnClient=*/true));
    ASTUnit *Unit = ASTUnit::LoadFromASTFile(ASTFiles[I], Diags,
                                             CI.getFileSystemOpts(), false);
    if (!Unit)
      continue;

    ASTImporter Importer(CI.getASTContext(), 
                         CI.getFileManager(),
                         Unit->getASTContext(), 
                         Unit->getFileManager(),
                         /*MinimalImport=*/false);

    TranslationUnitDecl *TU = Unit->getASTContext().getTranslationUnitDecl();
    for (DeclContext::decl_iterator D = TU->decls_begin(), 
                                 DEnd = TU->decls_end();
         D != DEnd; ++D) {
      // Don't re-import __va_list_tag, __builtin_va_list.
      if (NamedDecl *ND = dyn_cast<NamedDecl>(*D))
        if (IdentifierInfo *II = ND->getIdentifier())
          if (II->isStr("__va_list_tag") || II->isStr("__builtin_va_list"))
            continue;
      
      Importer.Import(*D);
    }

    delete Unit;
  }

  AdaptedAction->ExecuteAction();
  CI.getDiagnostics().getClient()->EndSourceFile();
}

unsigned clang_isPODType(CXType X) {
  QualType T = GetQualType(X);
  if (!T.getTypePtrOrNull())
    return 0;
  
  CXTranslationUnit TU = GetTU(X);
  ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);

  return T.isPODType(AU->getASTContext()) ? 1 : 0;
}

CXType clang_getCanonicalType(CXType CT) {
  if (CT.kind == CXType_Invalid)
    return CT;

  QualType T = GetQualType(CT);
  CXTranslationUnit TU = GetTU(CT);

  if (T.isNull())
    return MakeCXType(QualType(), GetTU(CT));

  ASTUnit *AU = static_cast<ASTUnit*>(TU->TUData);
  return MakeCXType(AU->getASTContext().getCanonicalType(T), TU);
}

static CXErrorCode clang_indexTranslationUnit_Impl(
    CXIndexAction idxAction, CXClientData client_data,
    IndexerCallbacks *client_index_callbacks, unsigned index_callbacks_size,
    unsigned index_options, CXTranslationUnit TU) {
  // Check arguments.
  if (isNotUsableTU(TU)) {
    LOG_BAD_TU(TU);
    return CXError_InvalidArguments;
  }
  if (!client_index_callbacks || index_callbacks_size == 0) {
    return CXError_InvalidArguments;
  }

  CIndexer *CXXIdx = TU->CIdx;
  if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
    setThreadBackgroundPriority();

  IndexerCallbacks CB;
  memset(&CB, 0, sizeof(CB));
  unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
                                  ? index_callbacks_size : sizeof(CB);
  memcpy(&CB, client_index_callbacks, ClientCBSize);

  auto DataConsumer = std::make_shared<CXIndexDataConsumer>(client_data, CB,
                                                            index_options, TU);

  ASTUnit *Unit = cxtu::getASTUnit(TU);
  if (!Unit)
    return CXError_Failure;

  ASTUnit::ConcurrencyCheck Check(*Unit);

  if (const FileEntry *PCHFile = Unit->getPCHFile())
    DataConsumer->importedPCH(PCHFile);

  FileManager &FileMgr = Unit->getFileManager();

  if (Unit->getOriginalSourceFileName().empty())
    DataConsumer->enteredMainFile(nullptr);
  else
    DataConsumer->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));

  DataConsumer->setASTContext(Unit->getASTContext());
  DataConsumer->startedTranslationUnit();

  indexPreprocessingRecord(*Unit, *DataConsumer);
  indexASTUnit(*Unit, DataConsumer, getIndexingOptionsFromCXOptions(index_options));
  DataConsumer->indexDiagnostics();

  return CXError_Success;
}