New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/routing/regions_router.hpp

@@ -0,0 +1,52 @@
+#pragma once
+
+#include "routing/base/astar_algorithm.hpp"
+#include "routing/checkpoints.hpp"
+#include "routing/regions_decl.hpp"
+#include "routing/router_delegate.hpp"
+
+#include "base/thread.hpp"
+
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+namespace routing
+{
+class IndexGraphStarter;
+
+// Encapsulates routing thread for generating all the mwms through which passes the route between
+// |checkpoints|.
+class RegionsRouter : public threads::IRoutine
+{
+public:
+  RegionsRouter(CountryFileGetterFn const & countryFileGetter, std::shared_ptr<NumMwmIds> numMwmIds,
+                DataSource & dataSource, RouterDelegate const & delegate,
+                Checkpoints const & checkpoints);
+
+  void Do() override;
+
+  std::unordered_set<std::string> const & GetMwmNames() const;
+
+private:
+  template <typename Vertex, typename Edge, typename Weight>
+  RouterResultCode ConvertResult(
+      typename AStarAlgorithm<Vertex, Edge, Weight>::Result result) const;
+
+  RouterResultCode CalculateSubrouteNoLeapsMode(IndexGraphStarter & starter,
+                                                std::vector<Segment> & subroute,
+                                                m2::PointD const & startCheckpoint,
+                                                m2::PointD const & finishCheckpoint);
+
+  // Gets checkpoint with |index| from |m_checkpoints| and returns its location and mwm number.
+  std::pair<m2::PointD, std::string> GetCheckpointRegion(size_t index) const;
+
+  CountryFileGetterFn const m_countryFileGetterFn;
+  std::shared_ptr<NumMwmIds> m_numMwmIds;
+  DataSource & m_dataSource;
+  Checkpoints const m_checkpoints;
+  std::unordered_set<std::string> m_mwmNames;
+
+  RouterDelegate const & m_delegate;
+};
+}  // namespace routing