Method MatchCities

libs/search/geocoder.cpp:1009–1067

}

void Geocoder::MatchCities(BaseContext & ctx)
{
  TRACE(MatchCities);

  ASSERT(!ctx.m_city, ());

  // Localities are ordered by (m_startToken, m_endToken) pairs.
  for (auto const & p : m_cities)
  {
    auto const & tokenRange = p.first;
    if (ctx.HasUsedTokensInRange(tokenRange))
      continue;

    for (auto const & city : p.second)
    {
      BailIfCancelled();

      if (!ctx.m_regions.empty() && !m_infoGetter.BelongsToAnyRegion(city.m_rect.Center(), ctx.m_regions.back()->m_ids))
        continue;

      ScopedMarkTokens mark(ctx.m_tokens, BaseContext::FromModelType(city.m_type), tokenRange);
      ctx.m_city = &city;
      SCOPE_GUARD(cleanup, [&ctx]() { ctx.m_city = nullptr; });

      if (ctx.AllTokensUsed())
      {
        // City matches to search query, we need to emit it as is.
        EmitResult(ctx, city, tokenRange, true /* allTokensUsed */);
        continue;
      }

      // No need to search features in the World map.
      if (m_context->GetInfo()->GetType() == MwmInfo::WORLD)
        continue;

      auto cityFeatures = RetrieveGeometryFeatures(*m_context, city.m_rect, RectId::Locality);

      if (cityFeatures.IsEmpty())
        continue;

      LocalityFilter filter(cityFeatures);

      size_t const numEmitted = ctx.m_numEmitted;

      CentersFilter centers;
      centers.Add(city.m_rect.Center());
      LimitedSearch(ctx, filter, centers);

      /// @todo A bit controversial here. We don't emit relaxed city if it was matched with some address.
      /// But do emit others (less relevant) relaxed cities. Can't say for sure is it ok or not, but
      /// we don't emit less relevant relaxed streets (@see CreateStreetsLayerAndMatchLowerLayers).
      if (numEmitted == ctx.m_numEmitted && !ctx.AllTokensUsed())
      {
        TRACE(Relaxed);
        EmitResult(ctx, *ctx.m_city, ctx.m_city->m_tokenRange, false /* allTokensUsed */);
      }
    }
  }