Repo created

libs/indexer/caching_rank_table_loader.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "indexer/feature_decl.hpp"
+#include "indexer/mwm_set.hpp"
+#include "indexer/rank_table.hpp"
+
+#include "base/macros.hpp"
+
+#include <map>
+#include <memory>
+#include <string>
+
+class DataSource;
+struct FeatureID;
+
+// *NOTE* This class IS NOT thread-safe.
+class CachingRankTableLoader
+{
+public:
+  CachingRankTableLoader(DataSource const & dataSource, std::string const & sectionName);
+
+  /// @return 0 if there is no rank for feature.
+  uint8_t Get(FeatureID const & featureId) const;
+  void OnMwmDeregistered(platform::LocalCountryFile const & localFile);
+
+private:
+  DataSource const & m_dataSource;
+  std::string const m_sectionName;
+  mutable std::map<MwmSet::MwmId, std::unique_ptr<search::RankTable>> m_deserializers;
+
+  DISALLOW_COPY(CachingRankTableLoader);
+};