private void EnforceNotIdentityTransition(TStateType destination)
{
if (destination.Equals(_specification.UnderlyingState))
{
throw new ArgumentException("Cannot transition to same state.");
}
}
private StateSpecifier InternalPermitIf(TTriggerType trigger, TStateType destinationState,
Func <bool> triggerCondition)
{
_specification.AddTriggerStrategy(new StateTransitionTriggerStrategy(trigger, destinationState,
triggerCondition));
return(this);
}
public StateSpecifier SubstateOf(TStateType superstate)
{
var superRepresentation = _specificationLookup(superstate);
_specification.Superstate = superRepresentation;
superRepresentation.AddSubstate(_specification);
return(this);
}
public override bool ResultsInTransitionFrom(TStateType source, object[] args, out TStateType destination)
{
destination = _destination(args);
return(true);
}
public State(FSM <TStateType> fsm, TStateType stateType)
{
_fsm = fsm;
StateType = stateType;
}
public StateTransition(TStateType source, TStateType destination, TTriggerType trigger)
{
_source = source;
_destination = destination;
_trigger = trigger;
}
public abstract bool ResultsInTransitionFrom(TStateType source, object[] args, out TStateType destination);
public StateSpecifier PermitIf(TTriggerType trigger, TStateType destinationState,
Func <bool> triggerCondition)
{
EnforceNotIdentityTransition(destinationState);
return(InternalPermitIf(trigger, destinationState, triggerCondition));
}
public StateSpecifier Permit(TTriggerType trigger, TStateType destinationState)
{
EnforceNotIdentityTransition(destinationState);
return(InternalPermit(trigger, destinationState));
}
private StateSpecifier InternalPermit(TTriggerType trigger, TStateType destinationState)
{
return(InternalPermitIf(trigger, destinationState, () => true));
}
public override bool ResultsInTransitionFrom(TStateType source, object[] args, out TStateType destination)
{
destination = default(TStateType);
return(false);
}
public StateTransitionTriggerStrategy(TTriggerType trigger, TStateType destination,
Func <bool> triggerCondition)
: base(trigger, triggerCondition)
{
_destination = destination;
}
public StateSpecification(TStateType state)
{
_state = state;
}
public bool IsIncludedIn(TStateType state)
{
return
(_state.Equals(state) ||
(_superstate != null && _superstate.IsIncludedIn(state)));
}
public bool Includes(TStateType state)
{
return(_state.Equals(state) || _substates.Any(s => s.Includes(state)));
}