// Currently, custom format and normal date time format except 'o' or 'O' 's' are NOT supported.
public static TimestampParseResult TryParseExact(string input, string format, IFormatProvider formatProvider, DateTimeStyles styles, out Timestamp result)
{
if (format != "o" && format != "O" && format != "s")
{
result = default(Timestamp);
return(TimestampParseResult.UnsupportedFormat);
}
var numberFormat = NumberFormatInfo.GetInstance(formatProvider);
var position = 0;
if (!ParseWhitespace(input, ref position, (styles & DateTimeStyles.AllowLeadingWhite) != 0, /* isTrailing */ false))
{
result = default(Timestamp);
return(TimestampParseResult.LeadingWhitespaceNotAllowed);
}
long year;
if (!ParseYear(input, ref position, numberFormat, out year))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidYear);
}
if (!ParseDelimiter(input, ref position, DateDelimiter))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidYearMonthDeilimiter);
}
var isLeapYear = Timestamp.IsLeapYearInternal(year);
int month;
if (!ParseDigitRange(input, 2, ref position, 1, 12, out month))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidMonth);
}
if (!ParseDelimiter(input, ref position, DateDelimiter))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidMonthDayDelimiter);
}
int day;
if (!ParseDay(input, ref position, month, isLeapYear, out day))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidDay);
}
if (!ParseDelimiter(input, ref position, DateTimeDelimiter))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidDateTimeDelimiter);
}
int hour;
if (!ParseDigitRange(input, 2, ref position, 0, 23, out hour))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidHour);
}
if (!ParseDelimiter(input, ref position, TimeDelimiter))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidHourMinuteDelimiter);
}
int minute;
if (!ParseDigitRange(input, 2, ref position, 0, 59, out minute))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidMinute);
}
if (!ParseDelimiter(input, ref position, TimeDelimiter))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidMinuteSecondDelimiter);
}
int second;
if (!ParseDigitRange(input, 2, ref position, 0, 59, out second))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidSecond);
}
var nanosecond = 0;
if (format != "s")
{
// "o" or "O"
if (!ParseDelimiter(input, ref position, SubsecondDelimiter))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidSubsecondDelimiter);
}
if (!ParseDigitRange(input, 9, ref position, 0, 999999999, out nanosecond))
{
result = default(Timestamp);
return(TimestampParseResult.InvalidNanoSecond);
}
}
if (!ParseDelimiter(input, ref position, UtcSign))
{
result = default(Timestamp);
return(TimestampParseResult.MissingUtcSign);
}
if (!ParseWhitespace(input, ref position, (styles & DateTimeStyles.AllowTrailingWhite) != 0, /* isTrailing */ true))
{
result = default(Timestamp);
return(TimestampParseResult.TrailingWhitespaceNotAllowed);
}
if (position != input.Length)
{
result = default(Timestamp);
return(TimestampParseResult.ExtraCharactors);
}
var components = new Timestamp.Value();
components.Year = year;
components.Month = month;
components.Day = day;
components.Hour = hour;
components.Minute = minute;
components.Second = second;
components.Nanoseconds = unchecked (( uint )nanosecond);
try
{
result = Timestamp.FromComponents(ref components, isLeapYear);
}
catch (OverflowException)
{
result = default(Timestamp);
return(TimestampParseResult.YearOutOfRange);
}
return(TimestampParseResult.Success);
}