X-Git-Url: http://developer.intra2net.com/git/?p=libt2n;a=blobdiff_plain;f=src%2Fcommand_server.hxx;h=c86b2858da60948e8db2c0d068cf753c01acbd3a;hp=192673366d98497be8de56c61a66124f9668a1ff;hb=a762a4763df16c8e38afe727921273cd929709a4;hpb=45a2ebc9695c4d7be6548b7e0f800d117ae56a0b

diff --git a/src/command_server.hxx b/src/command_server.hxx
index 1926733..c86b285 100644
--- a/src/command_server.hxx
+++ b/src/command_server.hxx
@@ -19,6 +19,7 @@
 #ifndef __LIBT2N_COMMAND_SERVER
 #define __LIBT2N_COMMAND_SERVER
 
+#include "command.hxx"
 #include "server.hxx"
 
 namespace libt2n
@@ -32,6 +33,10 @@ class command_server
 
         void handle_packet(const std::string& packet, server_connection* conn);
 
+    protected:
+        virtual command* cast_command(command* input)
+            { return input; }
+
     public:
         command_server(server& _s);
 
@@ -40,7 +45,25 @@ class command_server
         void send_hello(unsigned int conn_id);
 };
 
-}
+template<class T, class B> struct Derived_from {
+        static void constraints(T* p) { B* pb = p; }
+        Derived_from() { void(*p)(T*) = constraints; }
+};
+
+/// server handling group of incoming commands
+template<class COMMAND_GROUP>
+class group_command_server : public command_server
+{
+    private:
+        virtual command* cast_command(command* input)
+            { return dynamic_cast<COMMAND_GROUP*>(input); }
 
+    public:
+        group_command_server(server& _s)
+            : command_server(_s)
+        { Derived_from<COMMAND_GROUP,command>(); }
+};
+
+}
 #endif