public bool Start(INumber number)
{
if (!BeforeLoop())
{
return(false);
}
int nDigits = 0;
foundPoint = false;
number.BeforeLoop(this);
// Number stuff
do
{
if (!IsValidDigit(s[pos], AllowHexSpecifier))
{
if (FindGroupSeparator())
{
if (!AllowThousands)
{
if (!tryParse)
{
exc = GetFormatException();
}
return(false);
}
continue;
}
if (FindDecimalSeparator())
{
if (!AllowDecimalPoint)
{
if (!tryParse)
{
exc = GetFormatException("Decimal point is not allowed");
}
return(false);
}
foundPoint = true;
continue;
}
break;
}
else if (AllowHexSpecifier)
{
nDigits++;
if (number.IsHexOverflow())
{
if (!tryParse)
{
exc = GetOverflowException(s);
}
return(false);
}
uint d = (uint)Hex2Dec(s[pos++]);
number.AddHexDigit(d);
}
else if (foundPoint)
{
nDigits++;
// Allows decimal point as long as it's only
// followed by zeroes.
if (s[pos++] != '0')
{
if (!tryParse)
{
exc = GetOverflowException();
}
return(false);
}
}
else
{
nDigits++;
int d = s[pos++] - '0';
if (number.CatchOverflowException)
{
try
{
number.AddDigit(d);
}
catch (OverflowException)
{
if (!tryParse)
{
exc = GetOverflowException();
}
return(false);
}
}
else
{
number.AddDigit(d);
if (number.IsOverflow())
{
if (!tryParse)
{
exc = GetOverflowException(s);
}
return(false);
}
}
}
} while (pos < s.Length);
if (!AfterLoop(number, nDigits))
{
return(false);
}
return(true);
}