Exemple #1
0
Edge* RecordInfo::CreateEdgeFromOriginalType(const Type* type) {
  if (!type)
    return nullptr;

  // look for "typedef ... iterator;"
  if (!isa<ElaboratedType>(type))
    return nullptr;
  const ElaboratedType* elaboratedType = cast<ElaboratedType>(type);
  if (!isa<TypedefType>(elaboratedType->getNamedType()))
    return nullptr;
  const TypedefType* typedefType =
      cast<TypedefType>(elaboratedType->getNamedType());
  std::string typeName = typedefType->getDecl()->getNameAsString();
  if (!Config::IsIterator(typeName))
    return nullptr;
  RecordInfo* info =
      cache_->Lookup(elaboratedType->getQualifier()->getAsType());

  bool on_heap = false;
  bool is_unsafe = false;
  // Silently handle unknown types; the on-heap collection types will
  // have to be in scope for the declaration to compile, though.
  if (info) {
    is_unsafe = Config::IsGCCollectionWithUnsafeIterator(info->name());
    // Don't mark iterator as being on the heap if it is not supported.
    on_heap = !is_unsafe && Config::IsGCCollection(info->name());
  }
  return new Iterator(info, on_heap, is_unsafe);
}
Edge* RecordInfo::CreateEdge(const Type* type) {
  if (!type) {
    return 0;
  }

  if (type->isPointerType() || type->isReferenceType()) {
    if (Edge* ptr = CreateEdge(type->getPointeeType().getTypePtrOrNull()))
      return new RawPtr(ptr, false, type->isReferenceType());
    return 0;
  }

  RecordInfo* info = cache_->Lookup(type);

  // If the type is neither a pointer or a C++ record we ignore it.
  if (!info) {
    return 0;
  }

  TemplateArgs args;

  if (Config::IsRawPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new RawPtr(ptr, true, false);
    return 0;
  }

  if (Config::IsRefPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new RefPtr(ptr);
    return 0;
  }

  if (Config::IsOwnPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new OwnPtr(ptr);
    return 0;
  }

  if (Config::IsMember(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new Member(ptr);
    return 0;
  }

  if (Config::IsWeakMember(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new WeakMember(ptr);
    return 0;
  }

  if (Config::IsPersistent(info->name())) {
    // Persistent might refer to v8::Persistent, so check the name space.
    // TODO: Consider using a more canonical identification than names.
    NamespaceDecl* ns =
        dyn_cast<NamespaceDecl>(info->record()->getDeclContext());
    if (!ns || ns->getName() != "blink")
      return 0;
    if (!info->GetTemplateArgs(1, &args))
      return 0;
    if (Edge* ptr = CreateEdge(args[0]))
      return new Persistent(ptr);
    return 0;
  }

  if (Config::IsGCCollection(info->name()) ||
      Config::IsWTFCollection(info->name())) {
    bool is_root = Config::IsPersistentGCCollection(info->name());
    bool on_heap = is_root || info->IsHeapAllocatedCollection();
    size_t count = Config::CollectionDimension(info->name());
    if (!info->GetTemplateArgs(count, &args))
      return 0;
    Collection* edge = new Collection(info, on_heap, is_root);
    for (TemplateArgs::iterator it = args.begin(); it != args.end(); ++it) {
      if (Edge* member = CreateEdge(*it)) {
        edge->members().push_back(member);
      }
      // TODO: Handle the case where we fail to create an edge (eg, if the
      // argument is a primitive type or just not fully known yet).
    }
    return edge;
  }

  return new Value(info);
}
Exemple #3
0
Edge* RecordInfo::CreateEdge(const Type* type) {
  if (!type) {
    return 0;
  }

  if (type->isPointerType()) {
    if (Edge* ptr = CreateEdge(type->getPointeeType().getTypePtrOrNull()))
      return new RawPtr(ptr);
    return 0;
  }

  RecordInfo* info = cache_->Lookup(type);

  // If the type is neither a pointer or a C++ record we ignore it.
  if (!info) {
    return 0;
  }

  TemplateArgs args;

  if (Config::IsRawPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new RawPtr(ptr);
    return 0;
  }

  if (Config::IsRefPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new RefPtr(ptr);
    return 0;
  }

  if (Config::IsOwnPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new OwnPtr(ptr);
    return 0;
  }

  if (Config::IsMember(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new Member(ptr);
    return 0;
  }

  if (Config::IsWeakMember(info->name()) && info->GetTemplateArgs(1, &args)) {
    if (Edge* ptr = CreateEdge(args[0]))
      return new WeakMember(ptr);
    return 0;
  }

  if (Config::IsPersistent(info->name())) {
    // Persistent might refer to v8::Persistent, so check the name space.
    // TODO: Consider using a more canonical identification than names.
    NamespaceDecl* ns =
        dyn_cast<NamespaceDecl>(info->record()->getDeclContext());
    if (!ns || ns->getName() != "WebCore")
      return 0;
    if (!info->GetTemplateArgs(1, &args))
      return 0;
    if (Edge* ptr = CreateEdge(args[0]))
      return new Persistent(ptr);
    return 0;
  }

  if (Config::IsGCCollection(info->name()) ||
      Config::IsWTFCollection(info->name())) {
    bool is_root = Config::IsPersistentGCCollection(info->name());
    bool on_heap = is_root || info->IsHeapAllocatedCollection();
    size_t count = Config::CollectionDimension(info->name());
    if (!info->GetTemplateArgs(count, &args))
      return 0;
    Collection* edge = new Collection(info, on_heap, is_root);
    for (TemplateArgs::iterator it = args.begin(); it != args.end(); ++it) {
      if (Edge* member = CreateEdge(*it)) {
        edge->members().push_back(member);
      } else {
        // We failed to create an edge so abort the entire edge construction.
        delete edge;  // Will delete the already allocated members.
        return 0;
      }
    }
    return edge;
  }

  return new Value(info);
}