private static (object value, string error) Evaluator(Expression expression, IMemory state, Options options)
{
TimexProperty parsed = null;
string result = null;
string error = null;
var(validHour, validMinute, validSecond) = (0, 0, 0);
IReadOnlyList <object> args;
var formatRegex = new Regex("TXX:[0-5][0-9]:[0-5][0-9]");
var currentUtcTime = DateTime.UtcNow;
var convertedDateTime = currentUtcTime;
(args, error) = FunctionUtils.EvaluateChildren(expression, state, options);
if (error == null)
{
if (!formatRegex.IsMatch(args[0] as string))
{
error = $"{args[0]} must be a timex string which only contains minutes and seconds, for example: 'TXX:15:28'";
}
}
if (error == null)
{
if (args.Count == 2 && args[1] is string timezone)
{
object convertedTimeZone = null;
(convertedTimeZone, error) = FunctionUtils.ConvertTimeZoneFormat(timezone);
if (error == null)
{
convertedDateTime = TimeZoneInfo.ConvertTimeFromUtc(currentUtcTime, (TimeZoneInfo)convertedTimeZone);
}
}
else
{
convertedDateTime = currentUtcTime.ToLocalTime();
}
}
if (error == null)
{
(parsed, error) = FunctionUtils.ParseTimexProperty((args[0] as string).Replace("XX", "00"));
}
if (error == null)
{
var(hour, minute, second) = (convertedDateTime.Hour, convertedDateTime.Minute, convertedDateTime.Second);
if (parsed.Minute < minute || (parsed.Minute == minute && parsed.Second < second))
{
validHour = hour;
}
else
{
validHour = hour - 1;
}
if (validHour < 0)
{
validHour += 24;
}
validMinute = parsed.Minute ?? 0;
validSecond = parsed.Second ?? 0;
result = TimexProperty.FromTime(new Time(validHour, validMinute, validSecond)).TimexValue;
}
return(result, error);
}
public void DataTypes_Timex_FromTime()
{
Assert.AreEqual("T23:59:30", TimexProperty.FromTime(new Time(23, 59, 30)).TimexValue);
}