public override object VisitDirByteHex([NotNull] StdAssemblerParser.DirByteHexContext context)
{
string value;
StdToken token;
if (context.children.Count != 5)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
else
{
value = context.VAL().GetText();
if (!Regex.IsMatch(value, @"^[0-9A-F]+$"))
{
throw new Exception("Error de sintáxis: ingrese un valor hexadecimal");
}
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = true,
Mode = false,
OperationCode = "BYTE",
Value = value
};
count += int.Parse(Math.Ceiling((double)value.Length / 2).ToString());
return(token);
}
}
public override object VisitDirWord([NotNull] StdAssemblerParser.DirWordContext context)
{
string value;
StdToken token;
if (context.children.Count != 2)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
else
{
value = context.VAL().GetText();
if (Regex.IsMatch(value, @"(H|h)"))
{
if (!Regex.IsMatch(value, @"^[0-9A-F]+(H|h)$"))
{
throw new Exception("Error de sintáxis: ingrese una dirección hexadecimal");
}
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = true,
Mode = false,
OperationCode = "WORD",
Value = value
};
count += 3;
return(token);
}
else
{
if (Regex.IsMatch(value, "^[0-9]+$"))
{
value = int.Parse(value).ToString("X");
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = false,
Mode = false,
OperationCode = "WORD",
Value = value
};
count += 3;
return(token);
}
else
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
}
}
}
public override object VisitDirResw([NotNull] StdAssemblerParser.DirReswContext context)
{
string value;
StdToken token;
if (context.children.Count != 2)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
else
{
value = context.VAL().GetText();
if (Regex.IsMatch(value, @"(H|h)"))
{
if (!Regex.IsMatch(value, @"^[0-9A-F]+(H|h)$"))
{
throw new Exception("Error de sintáxis: ingrese una dirección hexadecimal");
}
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = true,
Mode = false,
OperationCode = "RESW",
Value = value
};
count += int.Parse(Regex.Replace(value, @"(H|h)", ""), System.Globalization.NumberStyles.HexNumber) * 3;
return(token);
}
else
{
if (Regex.IsMatch(value, "^[0-9]+$"))
{
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = false,
Mode = false,
OperationCode = "RESW",
Value = value
};
count += int.Parse(value) * 3;
return(token);
}
else
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
}
}
}
public override object VisitRSub([NotNull] StdAssemblerParser.RSubContext context)
{
StdToken token;
string codOp;
codOp = context.RSUB().GetText();
token = new StdToken()
{
Address = count,
IsHex = false,
IsDirective = false,
Mode = false,
OperationCode = "RSUB"
};
return(token);
}
public override object VisitDirByteChar([NotNull] StdAssemblerParser.DirByteCharContext context)
{
string ascii;
StdToken token;
{
ascii = Regex.Match(context.start.InputStream.ToString(), @"\'([\x00-\xFF])+\'").Value.Replace("'", "");
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = false,
Mode = false,
OperationCode = "BYTE",
Value = ascii
};
count += ascii.Length;
return(token);
}
}
public override object VisitFin([NotNull] StdAssemblerParser.FinContext context)
{
string end, inicio;
StdToken token;
if (context.children.Count > 3)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
else
{
end = context.END().GetText();
if (context.etiquetaFin() != null)
{
inicio = Visit(context.etiquetaFin()) as String;
}
else
{
inicio = string.Empty;
}
if (end.Contains("missing"))
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
}
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = false,
Mode = false,
OperationCode = "END",
Value = inicio
};
TokenList.Add(token);
return(token);
}
public override object VisitCodOp([NotNull] StdAssemblerParser.CodOpContext context)
{
string codOp, etiqueta;
StdToken token;
Boolean index = false;
codOp = context.CODOP().GetText();
etiqueta = Visit(context.etiqueta()) as String;
if (context.COMA() != null && context.HEX() != null)
{
index = true;
}
token = new StdToken()
{
Address = count,
IsDirective = false,
IsHex = false,
Mode = index,
OperationCode = codOp,
Symbol = etiqueta
};
return(token);
}
public override object VisitInicio([NotNull] StdAssemblerParser.InicioContext context)
{
string etiqueta, start, dir;
StdToken token;
etiqueta = string.Empty;
if (context.etiqueta() != null)
{
if (context.children.Count > 4)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
else
{
etiqueta = Visit(context.etiqueta()) as String;
start = context.START().GetText();
dir = context.VAL().GetText();
if (!Regex.IsMatch(dir, @"^[0-9A-F]{4}(H|h)$"))
{
throw new Exception("Error de sintáxis: ingrese una dirección hexadecimal");
}
if (start.Contains("missing") || dir.Contains("missing"))
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
count = int.Parse(Regex.Replace(dir, "(H|h)", ""), System.Globalization.NumberStyles.HexNumber);
}
}
else
{
if (context.children.Count > 3)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
else
{
start = context.START().GetText();
dir = context.VAL().GetText();
if (!Regex.IsMatch(dir, @"^[0-9A-F]{4}(H|h)$"))
{
throw new Exception("Error de sintáxis: ingrese una dirección hexadecimal");
}
if (start.Contains("missing") || dir.Contains("missing"))
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
count = int.Parse(Regex.Replace(dir, @"(H|h)", ""), System.Globalization.NumberStyles.HexNumber);
}
}
token = new StdToken()
{
Address = count,
IsDirective = true,
IsHex = true,
Label = etiqueta,
Mode = false,
OperationCode = "START",
Value = dir
};
TokenList.Add(token);
return(token);
}
public override object VisitLinea(StdAssemblerParser.LineaContext context)
{
StdToken token;
try
{
if (context.exception != null)
{
throw new Exception("Error de sintáxis: Instrucción no válida");
}
if (context.inicio() != null)
{
return(Visit(context.inicio()));
}
else if (context.proposiciones() != null)
{
return(Visit(context.proposiciones()));
}
else if (context.fin() != null)
{
return(Visit(context.fin()));
}
else if (context.NL() != null)
{
token = new StdToken()
{
IsEmpty = true
};
TokenList.Add(token);
return(token);
}
else
{
token = new StdToken()
{
Address = count,
StepOneError = "Error de sintáxis: Instrucción no válida"
};
TokenList.Add(token);
return(token);
}
}
catch (NullReferenceException)
{
token = new StdToken()
{
Address = count,
StepOneError = "Error de sintáxis: Instrucción no válida",
};
TokenList.Add(token);
return(token);
}
catch (Exception ex)
{
token = new StdToken()
{
Address = count,
StepOneError = ex.Message
};
TokenList.Add(token);
return(token);
}
}
