private static void CallAsyncResult(Task task, IMessageSource source, UInt64 session)
{
switch (task.Status)
{
case TaskStatus.Canceled:
{
source.Respond(new ExceptionMessage(session, new TaskCanceledException()));
}
break;
case TaskStatus.Faulted:
{
source.Respond(new ExceptionMessage(session, task.Exception.InnerException));
}
break;
case TaskStatus.RanToCompletion:
{
Type taskType = task.GetType();
if (taskType.IsGenericType && TypeFormatter.CanSerialize(taskType.GetGenericArguments()[0]))
{
object result = taskType.GetProperty("Result", BindingFlags.Public | BindingFlags.Instance).GetValue(task, null);
source.Respond(new ResultMessage(session, result));
}
else
{
source.Respond(new ResultMessage(session, null));
}
}
break;
}
}
private static void Call(IMessageSource source, IMessage message, Func <object[], object> target, bool extend)
{
object[] args; message.TryGetInvocationArgs(out args);
if (extend)
{
args = args.Insert(0, source);
}
try
{
object result = target(args);
if (result != null && !TypeFormatter.CanSerialize(result.GetType()))
{
result = null;
}
source.Respond(new ResultMessage(message, result));
}
catch (Exception er)
{
try
{
source.Respond(new ExceptionMessage(message, er));
}
catch (Exception fatal)
{
Application.Error(fatal);
}
}
}
private static void CallAsync(IMessageSource source, IMessage message, Func <object[], object> target, bool extend)
{
UInt64 id; if (message.TryGetTransferId(out id))
{
object[] args; message.TryGetInvocationArgs(out args);
if (extend)
{
args = args.Insert(0, source);
}
try
{
Task task = target(args) as Task;
if (task != null)
{
task.ContinueWith((tsk) => CallAsyncResult(tsk, source, id));
}
else
{
throw new ContextMarshalException(string.Concat(target.ToString(), " not async or not returning System.Threading.Tasks.Task"));
}
}
catch (Exception er)
{
try
{
source.Respond(new ExceptionMessage(message, er));
}
catch (Exception fatal)
{
Application.Error(fatal);
}
}
}
else
{
throw new ContextMarshalException(string.Concat(target.ToString(), " needs a transfer identifier"));
}
}