public GoSubMachineState GetNext(Token token)
        {
            GoSubMachineState    nextState  = this.CurrentState;
            GoSubStateTransition transition = new GoSubStateTransition(CurrentState, token.Type);

            if (!transitions.TryGetValue(transition, out nextState))
            {
                throw new Exception("GOSUB: Invalid transition: " + CurrentState + " -> " + nextState + "\n" + token.Text + " " + token.Type);
            }

            if (this.CurrentState == GoSubMachineState.GOSUB && token.Type == TokenType.INT)
            {
                this.command.ConsumeToken(token);
            }

            Console.WriteLine("GOSUB: " + this.CurrentState + " -> " + nextState + ": " + token.Text);

            return(nextState);
        }
            public override bool Equals(object obj)
            {
                GoSubStateTransition other = obj as GoSubStateTransition;

                return(other != null && this.CurrentState == other.CurrentState && this.Token == other.Token);
            }