wip

1 files changed, 14 insertions, 0 deletions

diff --git a/modules/remote/c++/transfer.hpp b/modules/remote/c++/transfer.hpp
index 32416de..f68497b 100644
--- a/modules/remote/c++/transfer.hpp
+++ b/modules/remote/c++/transfer.hpp
@@ -2,6 +2,8 @@
 
 #include <map>
 
+#include <forstio/common.hpp>
+
 namespace saw {
 template<typename Remote>
 class i_data_server {
@@ -9,6 +11,18 @@ protected:
 	~i_data_server() = default;
 public:
 	virtual std::pair<uint32_t,uint32_t> get_class_id() const = 0;
+
+	template<typename To>
+	error_or<ptr<To>> cast_to(){
+		{
+			auto rhs = get_class_id();
+			if(To::class_id.first == rhs.first && To::class_id.second == rhs.second){
+				return {ptr<To>{*static_cast<To*>(this)}};
+			}
+		}
+
+		return make_error<err::invalid_state>("Class IDs are not matching.");
+	}
 };
 
 template<typename Schema, typename Encoding, typename Remote>