Take stop signs into account during routing

features/options/extract/turn_function.feature

@@ -1,7 +1,6 @@
 @routing @testbot @turn_function
 Feature: Turn Function Information
 
-    // TODO
     Background:
         Given the profile file
         """

include/extractor/traffic_flow_control_nodes.hpp

@@ -11,14 +11,8 @@ namespace osrm
 namespace extractor
 {
 
-// Stop Signs tagged on nodes can be present or not. In addition Stop Signs have
-// an optional way direction they apply to. If the direction is unknown from the
-// data we have to compute by checking the distance to the next intersection.
-//
-// Impl. detail: namespace + enum instead of enum class to make Luabind happy
-
-// The traffic light annotation is extracted from node tags.
-// The directions in which the traffic light applies are relative to the way containing the node.
+// The direction annotation is extracted from node tags.
+// The directions in which traffic flow object applies are relative to the way containing the node.
 enum class TrafficFlowControlNodeDirection : std::uint8_t
 {
     NONE = 0,

profiles/lib/give_way.lua

@@ -1,21 +1,9 @@
 local GiveWay = {}
 
+TrafficFlowControlNode = require("lib/traffic_flow_control_node")
+
 function GiveWay.get_value(node)
-    local tag = node:get_value_by_key("highway")
-    if "give_way" == tag then
-        local direction = node:get_value_by_key("direction")
-        if direction then
-            if "forward" == direction then
-                return traffic_flow_control_direction.direction_forward
-            end
-            if "backward" == direction then
-                return traffic_flow_control_direction.direction_reverse
-            end
-        end
-        return traffic_flow_control_direction.direction_all
-    end
-    return traffic_flow_control_direction.none
+    return TrafficFlowControlNode.get_value(node, "give_way")
 end
 
 return GiveWay
-

profiles/lib/stop_sign.lua

@@ -1,20 +1,9 @@
 local StopSign = {}
 
+TrafficFlowControlNode = require("lib/traffic_flow_control_node")
+
 function StopSign.get_value(node)
-    local tag = node:get_value_by_key("highway")
-    if "stop" == tag then
-        local direction = node:get_value_by_key("direction")
-        if direction then
-            if "forward" == direction then
-                return traffic_flow_control_direction.direction_forward
-            end
-            if "backward" == direction then
-                return traffic_flow_control_direction.direction_reverse
-            end
-        end
-        return traffic_flow_control_direction.direction_all
-    end
-    return traffic_flow_control_direction.none
+    return TrafficFlowControlNode.get_value(node, "stop")
 end
 
 return StopSign

profiles/lib/traffic_flow_control_node.lua

@@ -0,0 +1,21 @@
+local TrafficFlowControlNode = {}
+
+function TrafficFlowControlNode.get_value(node, tag_name)
+    local tag = node:get_value_by_key("highway")
+    if tag_name == tag then
+        local direction = node:get_value_by_key("direction")
+        if direction then
+            if "forward" == direction then
+                return traffic_flow_control_direction.direction_forward
+            end
+            if "backward" == direction then
+                return traffic_flow_control_direction.direction_reverse
+            end
+        end
+        return traffic_flow_control_direction.direction_all
+    end
+    return traffic_flow_control_direction.none
+end
+
+return TrafficFlowControlNode
+