/// <summary>
/// Internal method to RunUntil( requirements ) are met
/// The public version is the delegate method above, much simplier and more powerful for users.
///
/// </summary>
/// <param name="requirements"></param>
/// <returns></returns>
protected bool RunUntil(ModelRequirements requirements)
{
//Run until the following requirements are met (ie: variable = values)
//Or until the time is elapsed.
long startingticks = DateTime.Now.Ticks;
long remainingticks = DetermineTicks();
if (this.Options.Tracing)
{
ModelTrace.WriteLine("Model Seed: " + this.Options.Seed);
}
bool meetsrequirements = Execute(requirements, startingticks, remainingticks);
//CallLast
//Because requirements not met and model needs to shutdown correctly.
if (!meetsrequirements)
{
//CallLast, actions
foreach (Model model in this.Models)
{
if (model.Actions.Accessed > 0) //Only if 'first' was called
{
foreach (ModelAction last in this.GetPossibleActions(model.Actions.FindFlag(ModelActionFlags.CallLast)))
{
this.ExecuteAction(last);
}
}
}
}
return(meetsrequirements);
}
private void ExecuteActionInfo(ModelActionInfo actioninfo)
{
ModelAction action = actioninfo.Action;
ModelParameters parameters = actioninfo.Parameters;
Model model = action.Model;
//Pre-Execute, events
//Note: If CallBefore returns false, we simply don't execute the method
if (model.OnCallBefore(action, parameters))
{
//Adding the selected action (and its param values) to the trace.
if (this.Options.Tracing)
{
_actionstrace.Add(actioninfo);
}
//Execute the method (delegate)
actioninfo.RetVal = action.Execute(parameters);
_actionscalled++;
//Add the returned model to the system
Model output = actioninfo.RetVal as Model;
if (output != null)
{
//If it doesn't already exist, and the model type is part of the set
if (this.Models.FindInstance(output) == null)
{
actioninfo.Created = true;
//Add returned models, if requested
if (this.Options.AddReturnedModels)
{
//Note: We always obey the maxinstance count
Models found = (Models)this.Models.FindType(output.GetType()).FindFlag((int)ModelItemFlags.Disabled, false);
if (found.Count < output.MaxInstances)
{
output.Enabled = true; //Enabled by default
if (output.ParentModel == null) //Hook up the creator, if not already specified
{
output.ParentModel = action.Model;
}
this.Models.Add(output);
}
}
}
}
//Trace
if (this.Options.Tracing)
{
ModelTrace.WriteLine(ModelTrace.FormatMethod(actioninfo));
}
//Post-Execute, events
model.OnCallAfter(action, parameters, actioninfo.RetVal);
}
//Reset cached variables
foreach (ModelVariable variable in this.Models.Variables)
{
variable.CachedValue = null;
}
}
protected virtual bool Execute(ModelRequirements requirements, long startingticks, long remainingticks)
{
bool meetsrequirements = false;
_actionscalled = 0;
//Continue until no more actions to execute
ModelAction action = this.DetermineNextAction();
while (action != null)
{
//Model
Model model = action.Model;
//Init
if (model.Actions.Accessed == 0)
{
model.Init();
}
//CallFirst, actions
//TODO: What happens if this now meets the requirements?
foreach (ModelAction first in this.GetPossibleActions(model.Actions.FindFlag(ModelActionFlags.CallFirst)))
{
if (first != action)
{
this.ExecuteAction(first);
}
}
//Execute (choose the parameters as well)
//Note: CallFirst might have disabled this model, so we check first
if (model.Enabled)
{
this.ExecuteAction(action);
}
//Determine if all the requirements were met
if (requirements != null && requirements.Count > 0 &&
MeetsRequirements(requirements))
{
meetsrequirements = true;
break;
}
//Check action count
if (_actionscalled >= _options.MaxActions)
{
if (this.Options.Tracing)
{
ModelTrace.WriteLine("MaxActions: '" + _options.MaxActions + "' was reached.");
}
break;
}
//Check Timeout
long currentticks = DateTime.Now.Ticks;
if (currentticks - startingticks > remainingticks)
{
if (this.Options.Tracing)
{
ModelTrace.WriteLine("Timeout: '" + _options.Timeout + "' has elapsed.");
}
break;
}
//Determine the next action
action = this.DetermineNextAction();
}
return(meetsrequirements);
}
