/// <summary>
/// This function is called by a PNPlace if it received enough tokens to satisfy the fire condition belongs to it,
/// or when this fire condition cannot be satisfied anymore.
/// </summary>
/// <param name="caller">The place that called this function.</param>
/// <param name="satisfied">True if the fire condition can be satisfied or false otherwise.</param>
public void FireConditionChange(PNPlace caller, bool satisfied)
{
if (!this.fireConditions.ContainsKey(caller))
{
throw new PetriNetException("The given place is not registered to the transition as an input place!");
}
if (satisfied)
{
/// A fire condition satisfied.
if (!this.fireable && !this.fireConditions[caller])
{
this.fireConditions[caller] = true;
foreach (KeyValuePair <PNPlace, bool> condition in this.fireConditions)
{
if (!condition.Value)
{
/// There are other unsatisfied fire conditions, so we can return.
return;
}
}
/// This was the last unsatisfied fire condition.
this.fireable = true;
this.group.TransitionBecameFireable(this, true);
}
}
else
{
/// The fire condition cannot be satisfied, so the transition becomes unfireable.
this.fireConditions[caller] = false;
this.fireable = false;
this.group.TransitionBecameFireable(this, false);
}
}
/// <summary>
/// Creates an edge from this transition to the given place with the given weight.
/// </summary>
/// <param name="target">The target place of the edge.</param>
/// <param name="weight">The weight of the edge.</param>
public void CreateOutputEdge(PNPlace target, int weight)
{
if (!this.outputEdges.ContainsKey(target))
{
this.outputEdges.Add(target, weight);
}
else
{
throw new ArgumentException("Output edge to the given target already exists!");
}
}
/// <summary>
/// Registers an edge from the given place to this transition.
/// </summary>
/// <param name="source">The source place of the registered edge.</param>
public void RegisterInputEdge(PNPlace source)
{
if (!this.fireConditions.ContainsKey(source))
{
this.fireConditions.Add(source, false);
this.inputEdges.Add(source);
this.fireable = false;
this.group.TransitionBecameFireable(this, false);
}
else
{
throw new ArgumentException("Input edge from the given source already exists!");
}
}