...

net/adc_netmessage.h

@@ -33,6 +33,12 @@ template <typename T, typename BT, typename VT>
 concept adc_from_bytes_func_c = std::invocable<T, const BT&> && std::convertible_to<traits::adc_retval_t<T>, VT>;
 
 
+template <typename T, typename BT, typename VT>
+concept adc_netmsg_converter_c = requires(T t) {
+    { t.template serialize<BT, VT>(std::declval<const VT&>()) } -> std::same_as<BT>;
+    { t.template deserialize<VT, BT>(std::declval<const BT&>()) } -> std::same_as<VT>;
+};
+
 struct AdcTheSameTypeTag {
 };
 
@@ -63,6 +69,12 @@ protected:
     AdcNetMessageInterface& operator=(const AdcNetMessageInterface&) = default;
     AdcNetMessageInterface& operator=(AdcNetMessageInterface&&) = default;
 
+    virtual void updateState() = 0;
+
+public:
+    typedef ByteStorageT byte_storage_t;
+    typedef StorageSeqT storage_seq_t;
+
     template <traits::adc_input_char_range T, traits::adc_input_char_range... Ts>
     void appendBytes(const T& v, const Ts&... vs)
     {
@@ -81,6 +93,8 @@ protected:
     {
         _byteStorage = ByteStorageT();
         appendBytes(v, vs...);
+
+        updateState();
     }
 
 
@@ -88,17 +102,19 @@ protected:
     void setBytes(IterT begin, IterT end)
     {
         _byteStorage = ByteStorageT(begin, end);
+
+        updateState();
     }
 
     template <std::input_iterator IterT>
     void appendBytes(IterT begin, IterT end)
     {
         std::copy(begin, end, std::back_inserter(_byteStorage));
+
+        updateState();
     }
 
-public:
-    typedef ByteStorageT byte_storage_t;
-    typedef StorageSeqT storage_seq_t;
+
 
     virtual size_t byteSize()
     {
@@ -135,6 +151,9 @@ public:
     using typename base_t::byte_storage_t;
     using typename base_t::storage_seq_t;
 
+    using base_t::appendBytes;
+    using base_t::setBytes;
+
     using message_view_t =
         std::conditional_t<std::is_same_v<MessageViewT, traits::AdcTheSameTypeTag>, ByteStorageT, MessageViewT>;
 
@@ -223,6 +242,12 @@ public:
 
 protected:
     MessageViewT _messageView;
+
+    void updateState() override
+    {
+        if constexpr (!std::is_same_v<MessageViewT, traits::AdcTheSameTypeTag>) {
+        }
+    }
 };