From 7a8260b1918b54ae54ac0f72c56a6a852d994006 Mon Sep 17 00:00:00 2001
From: Pavel Kirienko <pavel.kirienko@gmail.com>
Date: Sat, 11 Jul 2015 07:35:04 +0300
Subject: [PATCH] ParamServer update

---
 .../include/uavcan/protocol/param_server.hpp  | 20 ++-----------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/libuavcan/include/uavcan/protocol/param_server.hpp b/libuavcan/include/uavcan/protocol/param_server.hpp
index e5afb04943..a702b5cecd 100644
--- a/libuavcan/include/uavcan/protocol/param_server.hpp
+++ b/libuavcan/include/uavcan/protocol/param_server.hpp
@@ -69,22 +69,6 @@ public:
      * @return Negative if failed.
      */
     virtual int eraseAllParams() = 0;
-
-    /**
-     * Convenience methods that can be used to check if a param value is empty.
-     */
-    static bool isValueEmpty(const Value& val)
-    {
-        return val.value_bool.empty() &&
-               val.value_int.empty() &&
-               val.value_float.empty() &&
-               val.value_string.empty();
-    }
-    static bool isValueEmpty(const NumericValue& val)
-    {
-        return val.value_int.empty() &&
-               val.value_float.empty();
-    }
 };
 
 /**
@@ -126,14 +110,14 @@ class UAVCAN_EXPORT ParamServer
         }
 
         // Assign if needed, read back
-        if (!IParamManager::isValueEmpty(in.value))
+        if (!in.value.is<protocol::param::Empty>())
         {
             manager_->assignParamValue(out.name, in.value);
         }
         manager_->readParamValue(out.name, out.value);
 
         // Check if the value is OK, otherwise reset the name to indicate that we have no idea what is it all about
-        if (!IParamManager::isValueEmpty(out.value))
+        if (!out.value.is<protocol::param::Empty>())
         {
             manager_->readParamDefaultMaxMin(out.name, out.default_value, out.max_value, out.min_value);
         }