[CPP17] Modernize: Replace typedef with using statements

include/guidance/turn_instruction.hpp

@@ -16,7 +16,7 @@ namespace guidance
 // direction modifiers based on angle
 namespace DirectionModifier
 {
-typedef std::uint8_t Enum;
+using Enum = std::uint8_t;
 const constexpr Enum UTurn = 0;
 const constexpr Enum SharpRight = 1;
 const constexpr Enum Right = 2;
@@ -30,7 +30,7 @@ const constexpr Enum MaxDirectionModifier = 8;
 
 namespace TurnType
 {
-typedef std::uint8_t Enum;
+using Enum = std::uint8_t;
 const constexpr Enum Invalid = 0;                      // no valid turn instruction
 const constexpr Enum NewName = 1;                      // no turn, but name changes
 const constexpr Enum Continue = 2;                     // remain on a street

include/guidance/turn_lane_data.hpp

@@ -24,7 +24,7 @@ struct TurnLaneData
     // one-to-one mapping.
     bool operator<(const TurnLaneData &other) const;
 };
-typedef std::vector<TurnLaneData> LaneDataVector;
+using LaneDataVector = std::vector<TurnLaneData>;
 
 // convertes a string given in the OSM format into a TurnLaneData vector
 OSRM_ATTR_WARN_UNUSED

include/guidance/turn_lane_handler.hpp

@@ -34,7 +34,7 @@ namespace lanes
 
 namespace
 {
-typedef enum TurnLaneScenario
+using TurnLaneScenario = enum TurnLaneScenario
 {
     SIMPLE,             // a straightforward assignment
     PARTITION_LOCAL,    // an assignment that requires partitioning, using local turns
@@ -50,7 +50,7 @@ typedef enum TurnLaneScenario
     INVALID,  // some error might have occurred
     UNKNOWN,  // UNKNOWN describes all cases that we are currently not able to handle
     NUM_SCENARIOS
-} TurnLaneScenario;
+};
 
 } // namespace
 
@@ -61,7 +61,7 @@ class TurnLaneHandler
     using ScopedWriterLock = boost::interprocess::scoped_lock<UpgradableMutex>;
 
   public:
-    typedef std::vector<TurnLaneData> LaneDataVector;
+    using LaneDataVector = std::vector<TurnLaneData>;
 
     TurnLaneHandler(const util::NodeBasedDynamicGraph &node_based_graph,
                     const extractor::EdgeBasedNodeDataContainer &node_data_container,