Ejemplo n.º 1
0
/// \brief Load the declarations within this lexical storage from an
/// external source.
void
DeclContext::LoadLexicalDeclsFromExternalStorage() const {
  ExternalASTSource *Source = getParentASTContext().getExternalSource();
  assert(hasExternalLexicalStorage() && Source && "No external storage?");

  // Notify that we have a DeclContext that is initializing.
  ExternalASTSource::Deserializing ADeclContext(Source);

  llvm::SmallVector<Decl*, 64> Decls;
  if (Source->FindExternalLexicalDecls(this, Decls))
    return;

  // There is no longer any lexical storage in this context
  ExternalLexicalStorage = false;

  if (Decls.empty())
    return;

  // We may have already loaded just the fields of this record, in which case
  // don't add the decls, just replace the FirstDecl/LastDecl chain.
  if (const RecordDecl *RD = dyn_cast<RecordDecl>(this))
    if (RD->LoadedFieldsFromExternalStorage) {
      llvm::tie(FirstDecl, LastDecl) = BuildDeclChain(Decls);
      return;
    }

  // Splice the newly-read declarations into the beginning of the list
  // of declarations.
  Decl *ExternalFirst, *ExternalLast;
  llvm::tie(ExternalFirst, ExternalLast) = BuildDeclChain(Decls);
  ExternalLast->NextDeclInContext = FirstDecl;
  FirstDecl = ExternalFirst;
  if (!LastDecl)
    LastDecl = ExternalLast;
}
Ejemplo n.º 2
0
/// \brief Load the declarations within this lexical storage from an
/// external source.
void
DeclContext::LoadLexicalDeclsFromExternalStorage() const {
  ExternalASTSource *Source = getParentASTContext().getExternalSource();
  assert(hasExternalLexicalStorage() && Source && "No external storage?");

  // Notify that we have a DeclContext that is initializing.
  ExternalASTSource::Deserializing ADeclContext(Source);

  llvm::SmallVector<Decl*, 64> Decls;
  if (Source->FindExternalLexicalDecls(this, Decls))
    return;

  // There is no longer any lexical storage in this context
  ExternalLexicalStorage = false;

  if (Decls.empty())
    return;

  // Resolve all of the declaration IDs into declarations, building up
  // a chain of declarations via the Decl::NextDeclInContext field.
  Decl *FirstNewDecl = 0;
  Decl *PrevDecl = 0;
  for (unsigned I = 0, N = Decls.size(); I != N; ++I) {
    Decl *D = Decls[I];
    if (PrevDecl)
      PrevDecl->NextDeclInContext = D;
    else
      FirstNewDecl = D;

    PrevDecl = D;
  }

  // Splice the newly-read declarations into the beginning of the list
  // of declarations.
  PrevDecl->NextDeclInContext = FirstDecl;
  FirstDecl = FirstNewDecl;
  if (!LastDecl)
    LastDecl = PrevDecl;
}
Ejemplo n.º 3
0
/// \brief Load the declarations within this lexical storage from an
/// external source.
void
DeclContext::LoadLexicalDeclsFromExternalStorage() const {
  ExternalASTSource *Source = getParentASTContext().getExternalSource();
  assert(hasExternalLexicalStorage() && Source && "No external storage?");

  // Notify that we have a DeclContext that is initializing.
  ExternalASTSource::Deserializing ADeclContext(Source);
  
  // Load the external declarations, if any.
  SmallVector<Decl*, 64> Decls;
  ExternalLexicalStorage = false;
  switch (Source->FindExternalLexicalDecls(this, Decls)) {
  case ELR_Success:
    break;
    
  case ELR_Failure:
  case ELR_AlreadyLoaded:
    return;
  }

  if (Decls.empty())
    return;

  // We may have already loaded just the fields of this record, in which case
  // we need to ignore them.
  bool FieldsAlreadyLoaded = false;
  if (const RecordDecl *RD = dyn_cast<RecordDecl>(this))
    FieldsAlreadyLoaded = RD->LoadedFieldsFromExternalStorage;
  
  // Splice the newly-read declarations into the beginning of the list
  // of declarations.
  Decl *ExternalFirst, *ExternalLast;
  llvm::tie(ExternalFirst, ExternalLast) = BuildDeclChain(Decls,
                                                          FieldsAlreadyLoaded);
  ExternalLast->NextInContextAndBits.setPointer(FirstDecl);
  FirstDecl = ExternalFirst;
  if (!LastDecl)
    LastDecl = ExternalLast;
}