New cpp folder structure

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

libs/routing/junction_visitor.cpp

@@ -0,0 +1,56 @@
+#include "junction_visitor.hpp"
+
+#include "routing/joint_segment.hpp"
+#include "routing/route_weight.hpp"
+
+#include "base/logging.hpp"
+
+namespace routing
+{
+
+#ifdef DEBUG
+// Leaps algorithm.
+void DebugRoutingState(Segment const & vertex, std::optional<Segment> const & parent,
+                       RouteWeight const & heuristic, RouteWeight const & distance)
+{
+  // 1. Dump current processing vertex.
+//  std::cout << DebugPrint(vertex);
+//  std::cout << std::setprecision(8) << "; H = " << heuristic << "; D = " << distance;
+
+  // 2. Dump parent vertex.
+//  std::cout << "; P = " << (parent ? DebugPrint(*parent) : std::string("NO"));
+
+//  std::cout << std::endl;
+}
+
+// Joints algorithm.
+void DebugRoutingState(JointSegment const & vertex, std::optional<JointSegment> const & parent,
+                       RouteWeight const & heuristic, RouteWeight const & distance)
+{
+  // 1. Dump current processing vertex.
+//  std::cout << DebugPrint(vertex);
+//  std::cout << std::setprecision(8) << "; H = " << heuristic << "; D = " << distance;
+
+  // 2. Dump parent vertex.
+//  std::cout << "; P = " << (parent ? DebugPrint(*parent) : std::string("NO"));
+
+//  std::cout << std::endl;
+
+  // 3. Set breakpoint on a specific vertex.
+//  if (vertex.GetMwmId() == 400 && vertex.GetFeatureId() == 2412 &&
+//      vertex.GetEndSegmentId() == 0)
+//  {
+//    int noop = 0;
+//  }
+
+  // 4. Set breakpoint when MWM was changed.
+//  if (parent)
+//  {
+//    auto const & p = *parent;
+//    if (!p.IsFake() && !vertex.IsFake() && p.GetMwmId() != vertex.GetMwmId())
+//      int noop = 0;
+//  }
+}
+#endif
+
+} // namespace routing