/// <summary>
/// Processes the finite state machine with the given <see cref="Trigger"/>.
/// </summary>
/// <param name="trigger">The trigger.</param>
/// <exception cref="ArgumentNullException">Throws if the trigger is null.</exception>
internal void Process(Trigger trigger)
{
var transition = new StateTransition <T>(this.State, trigger);
if (this.stateTransitionTable.TryGetValue(transition, out var state))
{
this.State = state;
}
else
{
throw new InvalidOperationException($"Invalid state transition ({transition.Description()}).");
}
}
/// <summary>
/// Returns a value indicating whether this instance is equal to the specified <see cref="StateTransition{T}"/>.
/// </summary>
/// <param name="other">The other state transition.</param>
/// <returns>A boolean.</returns>
public bool Equals(StateTransition <T> other) => this.CurrentState.Equals(other.CurrentState) && this.Trigger.Equals(other.Trigger);
