/// <summary>
/// Deserialize the JSON stream into a .Net object.
/// For .Net Core/.Net 5.0 uses System.Text.Json
/// for .Net 4.5.2 uses System.Runtime.Serialization.Json
/// </summary>
/// <typeparam name="T">Object type</typeparam>
/// <param name="eventName">event Name</param>
/// <param name="stream">JSON stream</param>
/// <returns>object of type <typeparamref name="T"/></returns>
private static T DeserializeJsonEvent <T>(string eventName, Stream stream) where T : EventArgs
{
if (typeof(T) == typeof(EventArgs))
{
return((T)EventArgs.Empty);
}
if (typeof(T) == typeof(DevToolsEventArgs))
{
var paramsAsJsonString = StreamToString(stream, leaveOpen: true);
var args = new DevToolsEventArgs(eventName, paramsAsJsonString);
return((T)(object)args);
}
return((T)DeserializeJson(typeof(T), stream));
}
/// <inheritdoc/>
public IRegistration RegisterEventHandler <T>(string eventName, EventHandler <T> eventHandler) where T : DevToolsDomainEventArgsBase
{
EventHandler <Stream> handler = (sender, stream) =>
{
stream.Position = 0;
if (typeof(T) == typeof(DevToolsEventArgs) || typeof(T) == typeof(DevToolsDomainEventArgsBase))
{
var paramsAsJsonString = StreamToString(stream, leaveOpen: true);
var args = new DevToolsEventArgs(eventName, paramsAsJsonString);
eventHandler(sender, (T)(object)args);
}
else
{
eventHandler(sender, DeserializeJson <T>(stream));
}
};
eventHandlers.AddOrUpdate(eventName, _ => handler, (_, existingHandler) => existingHandler += handler);
return(new DevToolsEventHandlerRegistration(eventName, handler, eventHandlers));
}
