| 50 | |
| 51 | template <typename Sink> |
| 52 | static void Serialize(Sink & sink, std::vector<uint32_t> && cityRoadFeatureIds) |
| 53 | { |
| 54 | CityRoadsHeader header; |
| 55 | auto const startOffset = sink.Pos(); |
| 56 | header.Serialize(sink); |
| 57 | |
| 58 | std::sort(cityRoadFeatureIds.begin(), cityRoadFeatureIds.end()); |
| 59 | CHECK(adjacent_find(cityRoadFeatureIds.cbegin(), cityRoadFeatureIds.cend()) == cityRoadFeatureIds.cend(), |
| 60 | ("City road feature ids should be unique.")); |
| 61 | succinct::elias_fano::elias_fano_builder builder(cityRoadFeatureIds.back() + 1, cityRoadFeatureIds.size()); |
| 62 | for (auto fid : cityRoadFeatureIds) |
| 63 | builder.push_back(fid); |
| 64 | |
| 65 | coding::FreezeVisitor<Writer> visitor(sink); |
| 66 | succinct::elias_fano(&builder).map(visitor); |
| 67 | |
| 68 | auto const endOffset = sink.Pos(); |
| 69 | header.m_dataSize = static_cast<uint32_t>(endOffset - startOffset - sizeof(CityRoadsHeader)); |
| 70 | |
| 71 | sink.Seek(startOffset); |
| 72 | header.Serialize(sink); |
| 73 | sink.Seek(endOffset); |
| 74 | |
| 75 | LOG(LINFO, ("Serialized", cityRoadFeatureIds.size(), "road feature ids in cities. Size:", endOffset - startOffset, |
| 76 | "bytes.")); |
| 77 | } |
| 78 | |
| 79 | template <typename Source> |
| 80 | static void Deserialize(Source & src, std::unique_ptr<CopiedMemoryRegion> & cityRoadsRegion, |