Add NanaGet::JsonRpc2::ToNotificationMessage.

NanaGet/NanaGet.JsonRpc2.cpp

@@ -31,6 +31,33 @@ std::string NanaGet::JsonRpc2::FromRequestMessage(
     }
 }
 
+bool NanaGet::JsonRpc2::ToNotificationMessage(
+    std::string const& Source,
+    NanaGet::JsonRpc2::NotificationMessage& Destination)
+{
+    nlohmann::json SourceJson;
+
+    try
+    {
+        SourceJson = nlohmann::json::parse(Source);
+    }
+    catch (...)
+    {
+        return false;
+    }
+
+    Destination.Method = Mile::Json::ToString(
+        Mile::Json::GetSubKey(SourceJson, "method"));
+
+    nlohmann::json Parameters = Mile::Json::GetSubKey(SourceJson, "params");
+    if (!Parameters.is_null())
+    {
+        Destination.Parameters = Parameters.dump(2);
+    }
+
+    return true;
+}
+
 std::string NanaGet::JsonRpc2::FromErrorMessage(
     NanaGet::JsonRpc2::ErrorMessage const& Value)
 {

NanaGet/NanaGet.JsonRpc2.h

@@ -57,6 +57,31 @@ namespace NanaGet::JsonRpc2
     std::string FromRequestMessage(
         RequestMessage const& Value);
 
+    /**
+     * @brief The notification message of a JSON-RPC 2.0 call.
+     */
+    struct NotificationMessage
+    {
+        /**
+         * @brief A string containing the name of the method to be invoked.
+         *        method names that begin with the word rpc followed by a period
+         *        character (U+002E or ASCII 46) are reserved for rpc-internal
+         *        methods and extensions and MUST NOT be used for anything else.
+         */
+        std::string Method;
+
+        /**
+         * @brief A structured JSON value that holds the parameter values to be
+         *        used during the invocation of the method. This member MAY be
+         *        omitted.
+         */
+        std::string Parameters;
+    };
+
+    bool ToNotificationMessage(
+        std::string const& Source,
+        NotificationMessage& Destination);
+
     /**
      * @brief The message returned when a JSON-RPC 2.0 call encounters an error.
      */