Method CreateMap

include/sonic/dom/dynamicnode.h:277–294

* @brief Create a map to trace all members of this object. * @param alloc allocator that maintain this node's memory * @retval true successful * @retval false failed, which means that no memory can be allocated by * allocator. */

   * allocator.
   */
  bool CreateMap(Allocator& alloc) {
    sonic_assert(this->IsObject());
    sonic_assert(this->Capacity() >= this->Size());
    // if (this->Size() == 0) return false;
    if (nullptr == children()) {
      this->memberReserveImpl(16, alloc);
    }
    if (getMapUnsfe()) return true;
    map_type* map = static_cast<map_type*>(alloc.Malloc(sizeof(map_type)));
    new (map) map_type(MAType(&alloc));
    // SetMap(map);
    MemberNode* m = (MemberNode*)getObjChildrenFirstUnsafe();
    for (size_t i = 0; i < this->Size(); ++i) {
      map->emplace(std::make_pair((m + i)->name.GetStringView(), i));
    }
    setMap(map);
    return true;
  }

  /**
   * @brief Destory the created map. This means that you don't want maintain the