Static checks for guidance array sizes.

src/engine/api/json_factory.cpp

@@ -68,7 +68,8 @@ inline bool hasValidLanes(const guidance::Intersection &intersection)
 
 std::string instructionTypeToString(const TurnType::Enum type)
 {
-    BOOST_ASSERT(static_cast<std::size_t>(type) < sizeof(turn_type_names)/sizeof(turn_type_names[0]));
+    static_assert(sizeof(turn_type_names)/sizeof(turn_type_names[0]) >= TurnType::MaxTurnType,
+            "Some turn types has not string representation.");
     return turn_type_names[static_cast<std::size_t>(type)];
 }
 
@@ -98,11 +99,15 @@ util::json::Array lanesFromIntersection(const guidance::Intersection &intersecti
 
 std::string instructionModifierToString(const DirectionModifier::Enum modifier)
 {
+    static_assert(sizeof(modifier_names)/sizeof(modifier_names[0]) >= DirectionModifier::MaxDirectionModifier,
+            "Some direction modifiers has not string representation.");
     return modifier_names[static_cast<std::size_t>(modifier)];
 }
 
 std::string waypointTypeToString(const guidance::WaypointType waypoint_type)
 {
+    static_assert(sizeof(waypoint_type_names)/sizeof(waypoint_type_names[0]) >= static_cast<size_t>(guidance::WaypointType::MaxWaypointType),
+            "Some waypoint types has not string representation.");
     return waypoint_type_names[static_cast<std::size_t>(waypoint_type)];
 }