Serialization

• clean a bit NodeBase class.
• wip serialization of NodeBase that exemplify the 'intrusive' serialization (Serializer class member) + test.
• wip serialization of Eigen types (binary only) + test.
• serialization TimeStamp + test.
• serialization entry-point object is referred by typeid.

src/serialization/cereal/io.h

@@ -9,6 +9,14 @@
 namespace wolf {
 namespace serialization {
 
+/// @todo demangle typeid.name ?
+template <typename T>
+inline const std::string& type_name(const T&)
+{
+  static const std::string typeid_name = typeid(T).name();
+  return typeid_name;
+}
+
 inline std::string extension(const std::string& file)
 {
   const std::size_t p = file.find_last_of(".");
@@ -93,27 +101,18 @@ void serialize_pack(Ar&&)
   // end of expansion
 }
 
-/// @todo demangle typeid.name ?
-
 template <typename Ar, typename T, typename... Args>
 void serialize_pack(Ar&& archive, T&& object, Args&&... args)
 {
-  archive( cereal::make_nvp(typeid(T).name(), std::forward<T>(object)) );
+  archive( cereal::make_nvp(type_name(object), std::forward<T>(object)) );
   serialize_pack(archive, std::forward<Args>(args)...);
 }
 
-template <typename Ar, typename S, typename T>
-void serialize(S& stream, T&& object)
-{
-  Ar archive(stream);
-  archive( cereal::make_nvp(typeid(T).name(), std::forward<T>(object)) );
-}
-
 template <typename Ar, typename S, typename T, typename... Args>
 void serialize(S& stream, T&& object, Args&&... args)
 {
   Ar archive(stream);
-  archive( cereal::make_nvp(typeid(T).name(), std::forward<T>(object)) );
+  archive( cereal::make_nvp(type_name(object), std::forward<T>(object)) );
 
   serialize_pack(archive, std::forward<Args>(args)...);
 }