public ForMachineState GetNext(Token token)
{
ForMachineState nextState = this.CurrentState;
ForStateTransition transition = new ForStateTransition(CurrentState, token.Type);
if (this.CurrentState == ForMachineState.EQUALS && token.Type == TokenType.TO)
{
this.exp.Reset(); //valor inicial a ser atribuido na variavel esta em r0
this.command.ReceivedLoopedVariable(this.loopedVariable);
}
else if (this.CurrentState == ForMachineState.TO && token.Type == TokenType.STEP)
{
this.exp.Reset(); //valor maximo para parada do loop esta em r0
this.command.SaveMaxValueForLoop(this.loopedVariable);
}
else if (this.CurrentState == ForMachineState.STEP && token.Type == TokenType.END)
{
this.exp.Reset(); //valor de passo do loop esta em r0
this.command.SaveStepValueForLoop(this.loopedVariable);
}
if ((this.CurrentState == ForMachineState.EQUALS && token.Type != TokenType.TO) ||
(this.CurrentState == ForMachineState.TO && token.Type != TokenType.STEP) ||
(this.CurrentState == ForMachineState.STEP && token.Type != TokenType.END))
{
this.exp.MoveToNextState(token);
}
else if (!transitions.TryGetValue(transition, out nextState))
{
throw new Exception("For: Invalid transition: " + CurrentState + " -> " + nextState + "\n" + token.Text + " " + token.Type);
}
if (this.CurrentState == ForMachineState.FOR && (token.Type == TokenType.VAR || token.Type == TokenType.ARRAY))
{
this.loopedVariable = token;
}
Console.WriteLine("FOR: " + this.CurrentState + " -> " + nextState + ": " + token.Text);
return(nextState);
}
public override bool Equals(object obj)
{
ForStateTransition other = obj as ForStateTransition;
return(other != null && this.CurrentState == other.CurrentState && this.Token == other.Token);
}
