public override AutomataBDD EncodeComposition(BDDEncoder encoder)
{
AutomataBDD processAutomataBDD = this.Process.Encode(encoder);
if (encoder.model.mapChannelToSize.ContainsKey(this.ChannelName))
{
int channelEventIndex = encoder.GetChannelIndex(this.ChannelName, BDDEncoder.EventChannelInfo.EventType.ASYNC_CHANNEL_OUTPUT);
return(AutomataBDD.ChannelOutputPrefixing(this.ChannelName, channelEventIndex, new List <Expression>(this.ExpressionList), AssignmentExpr, processAutomataBDD, encoder.model));
}
else
{
List <Expression> expressionList = (this.ExpressionList != null) ? new List <Expression>(this.ExpressionList) : new List <Expression>();
int channelEventIndex = encoder.GetEventIndex(this.ChannelName, expressionList.Count);
return(AutomataBDD.SyncChannelOutputPrefixing(channelEventIndex, expressionList, processAutomataBDD, encoder.model));
}
}
/// <summary>
/// Encode sync channel out transition as event!a.b.c
/// </summary>
/// <param name="encoder"></param>
/// <param name="processVariableName"></param>
/// <param name="localVars">Local of the current SymbolicLTS is unchanged</param>
/// <returns></returns>
public List <CUDDNode> EncodeSyncChannelOutTransition(BDDEncoder encoder, string processVariableName, List <int> localVars)
{
Expression guard = Expression.EQ(new Variable(processVariableName),
new IntConstant(encoder.stateIndexOfCurrentProcess[this.FromPNPlace.ID]));
guard = Expression.CombineGuard(guard, GuardCondition);
List <Expression> parameters = encoder.GetParaExpInEvent(this.Event);
int channelEventIndex = encoder.GetEventIndex(this.Event.BaseName, parameters.Count);
guard = Expression.AND(guard, new Assignment(Model.EVENT_NAME, new IntConstant(channelEventIndex)));
for (int i = 0; i < parameters.Count; i++)
{
//assign event parameter to the values in the event expression
guard = Expression.AND(guard, new Assignment(encoder.model.eventParameterVariables[i], parameters[i]));
}
guard = Expression.AND(guard, new Assignment(processVariableName,
new IntConstant(encoder.stateIndexOfCurrentProcess[this.ToPNPlace.ID])));
List <CUDDNode> transitions = guard.TranslateBoolExpToBDD(encoder.model).GuardDDs;
return(encoder.model.AddVarUnchangedConstraint(transitions, localVars));
}
