void Transition(Composer composer, TInstance instance)
{
composer.Execute(() =>
{
State <TInstance> currentState = _currentStateAccessor.Get(instance);
if (_toState.Equals(currentState))
{
return(composer.ComposeCompleted());
}
var taskComposer = new TaskComposer <TInstance>(composer.CancellationToken);
if (currentState != null)
{
currentState.Raise(taskComposer, instance, currentState.Leave);
}
_toState.Raise(taskComposer, instance, _toState.BeforeEnter, currentState);
((Composer)taskComposer).Execute(() => _currentStateAccessor.Set(instance, _toState));
if (currentState != null)
{
currentState.Raise(taskComposer, instance, currentState.AfterLeave, _toState);
}
_toState.Raise(taskComposer, instance, _toState.Enter);
return(taskComposer.Finish());
});
}
void Activity <TInstance, TData> .Execute(Composer composer, TInstance instance, TData value)
{
composer.Execute(() =>
{
if (_filterExpression(value) == false)
{
return(composer.ComposeCompleted());
}
return(composer.ComposeActivity(_activity, instance, value));
});
}
void Execute(Composer composer, TInstance instance)
{
composer.Execute(() =>
{
CompositeEventStatus value = _property.Get(instance);
value.Set(_flag);
_property.Set(instance, value);
if (!value.Equals(_complete))
{
return(composer.ComposeCompleted());
}
var taskComposer = new TaskComposer <TInstance>(composer.CancellationToken);
_completeCallback(taskComposer, instance);
return(taskComposer.Finish());
});
}