public static T AwaitAsyncTyped <T>(IScriptCallContext context, Tasks.IAsyncResult <T> result)
{
if (!result.IsCompleted)
{
result.AsyncWaitHandle.WaitOne();
}
return(result.Result);
}
public static T AwaitAsyncToTyped <T>(IScriptCallContext context, Tasks.IAsyncResult <object> result)
{
if (result != null && !result.IsCompleted)
{
if (!result.AsyncWaitHandle.WaitOne(20000)) // TODO: Register this "task" and replace with loop that waits a short while.
{
throw new TimeoutException($"Timeout waiting for asynchronous result in line {context.CurrentScriptFileLine}.");
}
}
if (result.IsFaulted)
{
if (result is IObjectFaultDescriptor)
{
context.ReportError("Async operation failed. Fault: " + ((IObjectFaultDescriptor)result).FaultDescription);
}
else
{
context.ReportError("Async operation failed.");
}
return(default(T));
}
else
{
object v = result?.Result;
if (v != null)
{
var valueType = v.GetType();
if (typeof(T).IsAssignableFrom(valueType))
{
return((T)v);
}
else if (valueType == typeof(string))
{
try
{
object value = Convert.ChangeType(v, typeof(T));
return((T)value);
}
catch { }
}
throw new InvalidCastException($"The async result value type is \"{v.GetType().TypeName()}\", and cannot be converted into a \"{typeof(T).TypeName()}\".");
}
}
return(default(T));
}