private static ulong GetNumberValue(NumberContext context)
{
string txt;
var bin = context.NUMBERbin();
if (bin is not null)
{
txt = bin.GetText();
return(ParseNumber(2, 2, txt));
}
var oct = context.NUMBERoct();
if (oct is not null)
{
txt = oct.GetText();
return(ParseNumber(2, 8, txt));
}
var dec = context.NUMBERdec();
if (dec is not null)
{
txt = dec.GetText();
return(ParseNumber(0, 10, txt));
}
var decPre = context.NUMBERdec_prefix();
if (decPre is not null)
{
txt = decPre.GetText();
return(ParseNumber(2, 10, txt));
}
var hex = context.NUMBERhex();
if (hex is not null)
{
txt = hex.GetText();
return(ParseNumber(2, 16, txt));
}
var ch = context.CHARACTER();
if (ch is not null)
{
txt = ch.GetText();
return((UInt64)txt[0]);
}
return(0);
}