private string GetDateTimeSortKey(IConvertible value)
{
long ticks = value.ToDateTime(null).Ticks;
string scientific = string.Format(CultureInfo.InvariantCulture, "{0:e20}", ticks);
return(StringKeyGenerator.GetNumericSortKey(scientific, ticks == 0));
}
private string GetDecimalSortKey(IConvertible value)
{
decimal d = value.ToDecimal(null);
string scientific = string.Format(CultureInfo.InvariantCulture, "{0:e28}", value);
return(StringKeyGenerator.GetNumericSortKey(scientific, d == 0m));
}
private string GetIntSortKey(IConvertible value)
{
long num = value.ToInt64(null);
string scientific = string.Format(CultureInfo.InvariantCulture, "{0:e20}", value);
return(StringKeyGenerator.GetNumericSortKey(scientific, num == 0));
}
private static string GetNumericSortKey(string scientific, bool isZero)
{
if (isZero)
{
return("D");
}
char[] array = new char[scientific.Length];
bool flag = scientific[0] == '-';
bool flag2 = scientific[scientific.Length - 4] == '-';
char c = (char)((!flag) ? (flag2 ? 69 : 70) : ((!flag2) ? 66 : 67));
array[0] = c;
array[1] = StringKeyGenerator.ReverseIfNegative(scientific[scientific.Length - 3], flag2 ^ flag);
array[2] = StringKeyGenerator.ReverseIfNegative(scientific[scientific.Length - 2], flag2 ^ flag);
array[3] = StringKeyGenerator.ReverseIfNegative(scientific[scientific.Length - 1], flag2 ^ flag);
int num = 4;
int num2 = 0;
int num3 = 4;
if (scientific[num2] == '-')
{
num2++;
}
char c2 = scientific[num2++];
while (true)
{
switch (c2)
{
default:
array[num++] = StringKeyGenerator.ReverseIfNegative(c2, flag);
if (c2 != '0')
{
num3 = num;
}
break;
case '.':
break;
case 'e':
if (flag && num3 < array.Length)
{
array[num3++] = 'A';
}
return(new string(array, 0, num3));
}
c2 = scientific[num2++];
}
}
private string GetStringSortKey(IConvertible value)
{
string text = value.ToString(null);
if (this._compareOptions.HasFlag(CompareOptions.Ordinal))
{
return(text);
}
if (this._compareOptions.HasFlag(CompareOptions.OrdinalIgnoreCase))
{
return(text.ToUpperInvariant());
}
SortKey sortKey = this._compareInfo.GetSortKey(text, this._compareOptions);
return(StringKeyGenerator.ToComparableBase64String(sortKey.KeyData));
}
private string GetDoubleSortKey(IConvertible value)
{
double num = value.ToDouble(null);
if (double.IsNegativeInfinity(num))
{
return("A");
}
if (double.IsPositiveInfinity(num))
{
return("G");
}
if (double.IsNaN(num))
{
return("H");
}
string scientific = string.Format(CultureInfo.InvariantCulture, "{0:e28}", value);
return(StringKeyGenerator.GetNumericSortKey(scientific, num == 0.0));
}
