Method ReadFeatures

libs/indexer/data_source.cpp:286–323

}

void DataSource::ReadFeatures(FeatureCallback const & fn, std::vector<FeatureID> const & features) const
{
  ASSERT(is_sorted(features.begin(), features.end()), ());

  auto fidIter = features.begin();
  auto const endIter = features.end();
  while (fidIter != endIter)
  {
    MwmId const & id = fidIter->m_mwmId;
    MwmHandle const handle = GetMwmHandleById(id);
    if (handle.IsAlive())
    {
      // Prepare features reading.
      auto src = (*m_factory)(handle);
      do
      {
        auto const fts = src->GetFeatureStatus(fidIter->m_index);
        ASSERT_NOT_EQUAL(FeatureStatus::Deleted, fts,
                         ("Deleted feature was cached. It should not be here. Please review your code."));
        std::unique_ptr<FeatureType> ft;
        if (fts == FeatureStatus::Modified || fts == FeatureStatus::Created)
          ft = src->GetModifiedFeature(fidIter->m_index);
        else
          ft = src->GetOriginalFeature(fidIter->m_index);

        CHECK(ft, ());
        fn(*ft);
      }
      while (++fidIter != endIter && id == fidIter->m_mwmId);
    }
    else
    {
      // Skip unregistered mwm files.
      while (++fidIter != endIter && id == fidIter->m_mwmId)
        ;
    }
  }
}