Repo created

libs/indexer/house_to_street_iface.hpp

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+#pragma once
+#include "coding/reader.hpp"
+
+#include <cstdint>
+#include <optional>
+
+class HouseToStreetTable
+{
+public:
+  enum class Version : uint8_t
+  {
+    V0 = 0,
+    V1 = 1,
+    V2 = 2,
+    Latest = V2
+  };
+
+  enum class StreetIdType
+  {
+    // Table stores the index number of the correct street corresponding
+    // to the house in the list of streets generated by ReverseGeocoder.
+    Index,
+    // Table stores feature id of street corresponding to the house.
+    FeatureId,
+    // Empty table.
+    None
+  };
+
+  struct Header
+  {
+    template <class Sink>
+    void Serialize(Sink & sink) const
+    {
+      WriteToSink(sink, static_cast<uint8_t>(Version::Latest));
+      WriteToSink(sink, m_tableOffset);
+      WriteToSink(sink, m_tableSize);
+    }
+
+    template <class Source>
+    void Read(Source & source)
+    {
+      m_version = static_cast<Version>(ReadPrimitiveFromSource<uint8_t>(source));
+      m_tableOffset = ReadPrimitiveFromSource<uint32_t>(source);
+      m_tableSize = ReadPrimitiveFromSource<uint32_t>(source);
+    }
+
+    Version m_version = Version::Latest;
+    // All offsets are relative to the start of the section (offset of header is zero).
+    uint32_t m_tableOffset = 0;
+    uint32_t m_tableSize = 0;
+  };
+
+  virtual ~HouseToStreetTable() = default;
+
+  struct Result
+  {
+    uint32_t m_streetId;
+    StreetIdType m_type;
+  };
+  virtual std::optional<Result> Get(uint32_t houseId) const = 0;
+};