Repo created

libs/descriptions/loader.hpp

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+#pragma once
+
+#include "descriptions/serdes.hpp"
+
+#include "indexer/feature_decl.hpp"
+#include "indexer/mwm_set.hpp"
+
+#include <cstdint>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <vector>
+
+class DataSource;
+
+namespace descriptions
+{
+// *NOTE* This class IS thread-safe.
+class Loader
+{
+public:
+  explicit Loader(DataSource const & dataSource) : m_dataSource(dataSource) {}
+
+  std::string GetWikiDescription(FeatureID const & featureId, std::vector<int8_t> const & langPriority);
+
+private:
+  struct Entry
+  {
+    std::mutex m_mutex;
+    Deserializer m_deserializer;
+  };
+
+  using EntryPtr = std::shared_ptr<Entry>;
+
+  DataSource const & m_dataSource;
+  std::map<MwmSet::MwmId, EntryPtr> m_deserializers;
+  std::mutex m_mutex;
+};
+}  // namespace descriptions