public static CrontabFieldImpl FromKind(CrontabFieldType kind)
{
if (!Enum.IsDefined(typeof(CrontabFieldType), kind))
{
throw new ArgumentException(string.Format(
"Invalid crontab field kind. Valid values are {0}.",
string.Join(", ", Enum.GetNames(typeof(CrontabFieldType)))), nameof(kind));
}
return(FieldByKind[(int)kind]);
}
private CrontabFieldImpl(CrontabFieldType kind, int minValue, int maxValue, string[] names)
{
Debug.Assert(Enum.IsDefined(typeof(CrontabFieldType), kind));
Debug.Assert(minValue >= 0);
Debug.Assert(maxValue >= minValue);
Debug.Assert(names == null || names.Length == (maxValue - minValue + 1));
_kind = kind;
_minValue = minValue;
_maxValue = maxValue;
_names = names;
}
/// <summary>
/// Parses a crontab field expression given its kind.
/// </summary>
public static CrontabField Parse(CrontabFieldType kind, string expression)
{
return(new CrontabField(CrontabFieldImpl.FromKind(kind), expression));
}