From 3b337fd98091bfb4853f81979c178db3b0b4f59a Mon Sep 17 00:00:00 2001
From: Dirk Thomas <dthomas@osrfoundation.org>
Date: Sat, 20 Jun 2015 11:25:26 -0700
Subject: [PATCH] use separate exceptions

---
 rclcpp/include/rclcpp/parameter.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/rclcpp/include/rclcpp/parameter.hpp b/rclcpp/include/rclcpp/parameter.hpp
index e8c6523..4e5e153 100644
--- a/rclcpp/include/rclcpp/parameter.hpp
+++ b/rclcpp/include/rclcpp/parameter.hpp
@@ -202,9 +202,11 @@ public:
       case PARAMETER_BYTES:
         return ParameterVariant(parameter.name, parameter.value.bytes_value);
       case PARAMETER_NOT_SET:
+        throw std::runtime_error("Type from ParameterValue is not set");
       default:
         // TODO: use custom exception
-        throw std::runtime_error("Invalid type from ParameterValue");
+        throw std::runtime_error(
+          "Unexpected type from ParameterVariant: " + std::to_string(parameter.value.type));
     }
   }