Replace default switch cases with invalid_argument

This way, we will get a compiler warning when we add new enum types.

Author: urfeex

include/ur_client_library/ur/datatypes.h

@@ -144,11 +144,10 @@ inline std::string robotModeString(const RobotMode& mode)
       return "RUNNING";
     case RobotMode::UPDATING_FIRMWARE:
       return "UPDATING_FIRMWARE";
-    default:
-      std::stringstream ss;
-      ss << "Unknown robot mode: " << static_cast<int>(mode);
-      throw std::invalid_argument(ss.str());
+    case RobotMode::UNKNOWN:
+      return "UNKNOWN";
   }
+  throw std::invalid_argument("Unknown robot mode: " + std::to_string(static_cast<int>(mode)));
 }
 
 inline std::string safetyModeString(const SafetyMode& mode)
@@ -197,11 +196,8 @@ inline std::string safetyModeString(const SafetyMode& mode)
       return "PROFISAFE_EMERGENCY_STOP";
     case SafetyMode::SAFETY_API_SAFEGUARD_STOP:
       return "SAFETY_API_SAFEGUARD_STOP";
-    default:
-      std::stringstream ss;
-      ss << "Unknown safety mode: " << static_cast<int>(mode);
-      throw std::invalid_argument(ss.str());
   }
+  throw std::invalid_argument("Unknown safety mode: " + std::to_string(static_cast<int>(mode)));
 }
 
 inline std::string safetyStatusString(const SafetyStatus& status)
@@ -234,11 +230,8 @@ inline std::string safetyStatusString(const SafetyStatus& status)
       return "AUTOMATIC_MODE_SAFEGUARD_STOP";
     case SafetyStatus::SYSTEM_THREE_POSITION_ENABLING_STOP:
       return "SYSTEM_THREE_POSITION_ENABLING_STOP";
-    default:
-      std::stringstream ss;
-      ss << "Unknown safety status: " << static_cast<int>(status);
-      throw std::invalid_argument(ss.str());
   }
+  throw std::invalid_argument("Unknown safety status: " + std::to_string(static_cast<int>(status)));
 }
 
 inline std::string robotTypeString(const RobotType& type)
@@ -263,12 +256,10 @@ inline std::string robotTypeString(const RobotType& type)
       return "UR20";
     case RobotType::UR30:
       return "UR30";
-    default:
-      std::stringstream ss;
-      ss << "Unknown Robot Type: " << static_cast<int>(type);
-      URCL_LOG_WARN(ss.str().c_str());
+    case RobotType::UNDEFINED:
       return "UNDEFINED";
   }
+  throw std::invalid_argument("Unknown robot type: " + std::to_string(static_cast<int>(type)));
 }
 
 /**
@@ -290,12 +281,10 @@ inline std::string robotSeriesString(const RobotSeries& series)
       return "E_SERIES";
     case RobotSeries::UR_SERIES:
       return "UR_SERIES";
-    default:
-      std::stringstream ss;
-      ss << "Unknown Robot Series: " << static_cast<int>(series);
-      URCL_LOG_WARN(ss.str().c_str());
+    case RobotSeries::UNDEFINED:
       return "UNDEFINED";
   }
+  throw std::invalid_argument("Unknown robot series: " + std::to_string(static_cast<int>(series)));
 }
 
 }  // namespace urcl