/// <summary>
/// C# port of Scala's orElse method for partial function chaining.
/// See http://scalachina.com/api/scala/PartialFunction.html
/// </summary>
/// <param name="original">The original <see cref="StateFunction" /> to be called</param>
/// <param name="fallback">The <see cref="StateFunction" /> to be called if <paramref name="original" /> returns null</param>
/// <returns>
/// A <see cref="StateFunction" /> which combines both the results of <paramref name="original" /> and
/// <paramref name="fallback" />
/// </returns>
private static StateFunction OrElse(StateFunction original, StateFunction fallback)
{
StateFunction chained = (@event, state) =>
{
var originalResult = original.Invoke(@event, state);
if (originalResult == null)
{
return(fallback.Invoke(@event, state));
}
return(originalResult);
};
return(chained);
}
/// <summary>
/// C# port of Scala's orElse method for partial function chaining.
///
/// See http://scalachina.com/api/scala/PartialFunction.html
/// </summary>
/// <param name="original">The original <see cref="StateFunction"/> to be called</param>
/// <param name="fallback">The <see cref="StateFunction"/> to be called if <paramref name="original"/> returns null</param>
/// <returns>A <see cref="StateFunction"/> which combines both the results of <paramref name="original"/> and <paramref name="fallback"/></returns>
private static StateFunction OrElse(StateFunction original, StateFunction fallback)
{
StateFunction chained = delegate(Event <TData> @event)
{
var originalResult = original.Invoke(@event);
if (originalResult == null)
{
return(fallback.Invoke(@event));
}
return(originalResult);
};
return(chained);
}
/// <summary>
/// C# port of Scala's orElse method for partial function chaining.
/// See http://scalachina.com/api/scala/PartialFunction.html
/// </summary>
/// <param name="original">The original <see cref="StateFunction" /> to be called</param>
/// <param name="fallback">The <see cref="StateFunction" /> to be called if <paramref name="original" /> returns null</param>
/// <returns>
/// A <see cref="StateFunction" /> which combines both the results of <paramref name="original" /> and
/// <paramref name="fallback" />
/// </returns>
private static StateFunction OrElse(StateFunction original, StateFunction fallback)
{
StateFunction chained = delegate(FSMBase.Event <TData> @event, State <TState, TData, TEvent> state)
{
var originalResult = original.Invoke(@event, state);
if (originalResult == null)
{
return(fallback.Invoke(@event, state));
}
return(originalResult);
};
return(chained);
}
