private ASCIITableState GetState(int index)
{
while (m_tabela.Count <= index)
{
m_tabela.Add(null);
}
if (m_tabela[index] == null)
{
m_tabela[index] = new ASCIITableState();
}
return(m_tabela[index]);
}
public bool ProcessInput()
{
while (true)
{
int input = GetInput();
if ((CurrentState < 0 || CurrentState >= m_tabela.Count) || (m_tabela[CurrentState] == null))
{
if (input == INPUT_EOF)
{
Debug.WriteLine(String.Format("Parada por EOF"));
}
else
{
Debug.WriteLine(String.Format("Parada por estado inválido: {0}", CurrentState));
}
break;
}
ASCIITableState estadoAtual = m_tabela[CurrentState];
int target = estadoAtual.GetTarget(input);
if (target <= 0)
{
Debug.WriteLine(String.Format("Parada por estado inválido: {0}", target));
break;
}
NextState = target & TARGET_STATE_MASK;
char dc = '?';
if (input >= 32 && input < 127)
{
dc = (char)input;
}
Debug.WriteLine("{0} -> '{1}'({2}) -> {3}", CurrentState, dc, input, NextState);
if (NextState == SUCCESS_STATE)
{
Debug.WriteLine("Parada por SUCCESS_STATE");
return(true);
}
else if (NextState == FAILED_STATE)
{
Debug.WriteLine("Parada por FAILED_STATE");
break;
}
// ----------------------------
if ((target & (int)eScannerStateModifiers.e01ReturnToken) != 0)
{
ReturnToken(estadoAtual.GetId(input));
}
if ((target & (int)eScannerStateModifiers.e02ClearToken) != 0)
{
ClearToken();
}
if ((target & (int)eScannerStateModifiers.e03InsertToken) != 0)
{
InsertToken(input);
}
// ----------------------------
if ((target & (int)eScannerStateModifiers.e04ReturnToken) != 0)
{
ReturnToken(estadoAtual.GetId(input));
}
if ((target & (int)eScannerStateModifiers.e05ClearToken) != 0)
{
ClearToken();
}
if ((target & (int)eScannerStateModifiers.e06InsertToken) != 0)
{
InsertToken(input);
}
// ----------------------------
if ((target & (int)eScannerStateModifiers.e07ReturnToken) != 0)
{
ReturnToken(estadoAtual.GetId(input));
}
if ((target & (int)eScannerStateModifiers.e08ClearToken) != 0)
{
ClearToken();
}
if ((target & (int)eScannerStateModifiers.e09InsertToken) != 0)
{
InsertToken(input);
}
// ----------------------------
if ((target & (int)eScannerStateModifiers.e10PushBack) != 0)
{
SetInput(input);
}
// ----------------------------
LastState = CurrentState;
CurrentState = NextState;
}
return(false);
}
public void SetStateSuccessEOF(int stateIndex)
{
ASCIITableState state = GetState(stateIndex);
state.SetState(SUCCESS_STATE, INPUT_EOF, eScannerStateModifiers.eNenhum, NO_ID);
}
public void SetStateFail(int stateIndex)
{
ASCIITableState state = GetState(stateIndex);
state.SetState(FAILED_STATE, eScannerStateModifiers.eNenhum, NO_ID);
}
public void SetState(int fromState, int toState, string chars, eScannerStateModifiers modifiers, int returnId)
{
ASCIITableState state = GetState(fromState);
state.SetState(toState, chars, modifiers, returnId);
}