private static (object value, string error) Evaluator(Expression expression, IMemory state, Options options) { TimexProperty parsed = null; string value = null; string error = null; IReadOnlyList <object> args; (args, error) = FunctionUtils.EvaluateChildren(expression, state, options); if (error == null) { (parsed, error) = FunctionUtils.ParseTimexProperty(args[0]); } // if the parsed TimexProperty has no types, then it cannot be resolved if (error == null && parsed.Types.Count == 0) { error = $"The parsed TimexProperty of {args[0]} in {expression} has no types. It can't be resolved to a string value."; } if (error == null) { var formatedTimex = TimexFormat.Format(parsed); try { var resolvedValues = TimexResolver.Resolve(new string[] { formatedTimex }); value = resolvedValues.Values[0].Value; } catch (ArgumentException err) { error = $"{args[0]} in {expression} is not a valid argument. {err.Message}"; } } return(value, error); }
private static (object value, string error) Evaluator(Expression expression, IMemory state, Options options) { TimexProperty parsed = null; bool? value = null; string error = null; IReadOnlyList <object> args; (args, error) = FunctionUtils.EvaluateChildren(expression, state, options); if (error == null) { (parsed, error) = FunctionUtils.ParseTimexProperty(args[0]); } if (error == null) { value = (parsed.Month != null && parsed.DayOfMonth != null) || parsed.DayOfWeek != null; } return(value, error); }
private static (object value, string error) Evaluator(Expression expression, IMemory state, Options options) { TimexProperty parsed = null; string result = null; string error = null; var(validYear, validMonth, validDay) = (0, 0, 0); var currentUtcTime = DateTime.UtcNow; var convertedDateTime = currentUtcTime; IReadOnlyList <object> args; (args, error) = FunctionUtils.EvaluateChildren(expression, state, options); if (error == null) { (parsed, error) = FunctionUtils.ParseTimexProperty(args[0]); } if (error == null) { if (parsed.Year != null || parsed.Month == null || parsed.DayOfMonth == null) { error = $"{args[0]} must be a timex string which only contains month and day-of-month, for example: 'XXXX-10-31'."; } } 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) { var(year, month, day) = (convertedDateTime.Year, convertedDateTime.Month, convertedDateTime.Day); if (parsed.Month <= month || (parsed.Month == month && parsed.DayOfMonth < day)) { validYear = year; } else { validYear = year - 1; } validMonth = parsed.Month ?? 0; validDay = parsed.DayOfMonth ?? 0; if (validMonth == 2 && validDay == 29) { while (!DateTime.IsLeapYear(validYear)) { validYear -= 1; } } result = TimexProperty.FromDate(new DateTime(validYear, validMonth, validDay)).TimexValue; } return(result, error); }
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); }