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);
}
/// <summary>
/// Exit a parse tree produced by <see cref="StdAssemblerParser.inicio"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitInicio([NotNull] StdAssemblerParser.InicioContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="StdAssemblerParser.inicio"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitInicio([NotNull] StdAssemblerParser.InicioContext context)
{
return(VisitChildren(context));
}
