public override void PrtEnqueueEvent(PrtValue e, PrtValue arg, PrtMachine source)
{
if (e is PrtNullValue)
{
throw new PrtIllegalEnqueueException("Enqueued event must be non-null");
}
PrtType prtType;
PrtEventValue ev = e as PrtEventValue;
//assertion to check if argument passed inhabits the payload type.
prtType = ev.evt.payloadType;
if (!(prtType is PrtNullType) && !PrtValue.PrtInhabitsType(arg, prtType))
{
throw new PrtInhabitsTypeException(String.Format("Payload <{0}> does not match the expected type <{1}> with event <{2}>", arg.GetString(), prtType.GetString(), ev.evt.name));
}
else if (prtType is PrtNullType && !(arg is PrtNullValue))
{
throw new PrtIllegalEnqueueException("Did not expect a payload value");
}
if (currentStatus == PrtMachineStatus.Halted)
{
stateImpl.Trace(
@"<EnqueueLog> {0}-{1} Machine has been halted and Event {2} is dropped",
this.Name, this.instanceNumber, ev.evt.name);
}
else
{
stateImpl.Trace(
@"<EnqueueLog> Enqueued Event <{0}, {1}> in {2}-{3} by {4}-{5}",
ev.evt.name, arg.GetString(), this.Name, this.instanceNumber, source.Name, source.instanceNumber);
this.eventQueue.EnqueueEvent(e, arg);
if (this.maxBufferSize != -1 && this.eventQueue.Size() > this.maxBufferSize)
{
if (this.doAssume)
{
throw new PrtAssumeFailureException();
}
else
{
throw new PrtMaxBufferSizeExceededException(
String.Format(@"<EXCEPTION> Event Buffer Size Exceeded {0} in Machine {1}-{2}",
this.maxBufferSize, this.Name, this.instanceNumber));
}
}
if (currentStatus == PrtMachineStatus.Blocked && this.eventQueue.IsEnabled(this))
{
currentStatus = PrtMachineStatus.Enabled;
}
}
//Announce it to all the monitors
stateImpl.Announce(e, arg, source);
}
public static PrtValue PrtCastValue(PrtValue value, PrtType type)
{
if (!PrtInhabitsType(value, type))
{
throw new PrtInhabitsTypeException(String.Format("value {0} is not a member of type {1}", value.GetString(), type.GetString()));
}
return(value.Clone());
}