private ParseResult <AnnualDate>?DetermineMonth(PatternFields usedFields, string text)
{
switch (usedFields & (PatternFields.MonthOfYearNumeric | PatternFields.MonthOfYearText))
{
case PatternFields.MonthOfYearNumeric:
// No-op
break;
case PatternFields.MonthOfYearText:
MonthOfYearNumeric = MonthOfYearText;
break;
case PatternFields.MonthOfYearNumeric | PatternFields.MonthOfYearText:
if (MonthOfYearNumeric != MonthOfYearText)
{
return(ParseResult <AnnualDate> .InconsistentMonthValues(text));
}
// No need to change MonthOfYearNumeric - this was just a check
break;
case 0:
MonthOfYearNumeric = TemplateValue.Month;
break;
}
if (MonthOfYearNumeric > CalendarSystem.Iso.GetMonthsInYear(2000))
{
return(ParseResult <AnnualDate> .IsoMonthOutOfRange(text, MonthOfYearNumeric));
}
return(null);
}
private ParseResult <LocalDate> DetermineMonth(PatternFields usedFields)
{
switch (usedFields & (PatternFields.MonthOfYearNumeric | PatternFields.MonthOfYearText))
{
case PatternFields.MonthOfYearNumeric:
// No-op
break;
case PatternFields.MonthOfYearText:
MonthOfYearNumeric = MonthOfYearText;
break;
case PatternFields.MonthOfYearNumeric | PatternFields.MonthOfYearText:
if (MonthOfYearNumeric != MonthOfYearText)
{
return(ParseResult <LocalDate> .InconsistentMonthValues);
}
// No need to change MonthOfYearNumeric - this was just a check
break;
case 0:
MonthOfYearNumeric = templateValue.Month;
break;
}
if (MonthOfYearNumeric > Calendar.GetMaxMonth(Year))
{
return(ParseResult <LocalDate> .MonthOutOfRange(MonthOfYearNumeric, Year));
}
return(null);
}
internal override ParseResult <LocalDate> CalculateValue(PatternFields usedFields)
{
// This will set Year if necessary
ParseResult <LocalDate> failure = DetermineYear(usedFields);
if (failure != null)
{
return(failure);
}
// This will set MonthOfYearNumeric if necessary
failure = DetermineMonth(usedFields);
if (failure != null)
{
return(failure);
}
int day = IsFieldUsed(usedFields, PatternFields.DayOfMonth) ? DayOfMonth : templateValue.Day;
if (day > Calendar.GetDaysInMonth(Year, MonthOfYearNumeric))
{
return(ParseResult <LocalDate> .DayOfMonthOutOfRange(day, MonthOfYearNumeric, Year));
}
LocalDate value = new LocalDate(Year, MonthOfYearNumeric, day, Calendar);
if (IsFieldUsed(usedFields, PatternFields.DayOfWeek) && DayOfWeek != value.DayOfWeek)
{
return(ParseResult <LocalDate> .InconsistentDayOfWeekTextValue);
}
return(ParseResult <LocalDate> .ForValue(value));
}
public SteppedPattern(NodaAction <TResult, StringBuilder> formatActions,
ParseAction[] parseActions,
NodaFunc <TBucket> bucketProvider, PatternFields usedFields)
{
this.formatActions = formatActions;
this.parseActions = parseActions;
this.bucketProvider = bucketProvider;
this.usedFields = usedFields;
}
public Action <TResult, StringBuilder> BuildFormatAction(PatternFields finalFields)
{
bool genitive = (finalFields & PatternFields.DayOfMonth) != 0;
IList <string> textValues = count == 3
? (genitive ? formatInfo.ShortMonthGenitiveNames : formatInfo.ShortMonthNames)
: (genitive ? formatInfo.LongMonthGenitiveNames : formatInfo.LongMonthNames);
return((value, sb) => sb.Append(textValues[getter(value)]));
}
internal override ParseResult <ZonedDateTime> CalculateValue(PatternFields usedFields, string text)
{
var localResult = LocalDateTimePatternParser.LocalDateTimeParseBucket.CombineBuckets(usedFields, Date, Time, text);
if (!localResult.Success)
{
return(localResult.ConvertError <ZonedDateTime>());
}
var localDateTime = localResult.Value;
// No offset - so just use the resolver
if ((usedFields & PatternFields.EmbeddedOffset) == 0)
{
try
{
return(ParseResult <ZonedDateTime> .ForValue(Zone.ResolveLocal(localDateTime, resolver)));
}
catch (SkippedTimeException)
{
return(ParseResult <ZonedDateTime> .SkippedLocalTime(text));
}
catch (AmbiguousTimeException)
{
return(ParseResult <ZonedDateTime> .AmbiguousLocalTime(text));
}
}
// We were given an offset, so we can resolve and validate using that
var mapping = Zone.MapLocal(localDateTime);
ZonedDateTime result;
switch (mapping.Count)
{
// If the local time was skipped, the offset has to be invalid.
case 0:
return(ParseResult <ZonedDateTime> .InvalidOffset(text));
case 1:
result = mapping.First(); // We'll validate in a minute
break;
case 2:
result = mapping.First().Offset == Offset?mapping.First() : mapping.Last();
break;
default:
throw new InvalidOperationException("Mapping has count outside range 0-2; should not happen.");
}
if (result.Offset != Offset)
{
return(ParseResult <ZonedDateTime> .InvalidOffset(text));
}
return(ParseResult <ZonedDateTime> .ForValue(result));
}
/// <summary>
/// Registers that a pattern field has been used in this pattern, and throws a suitable error
/// result if it's already been used.
/// </summary>
internal void AddField(PatternFields field, char characterInPattern)
{
PatternFields newUsedFields = usedFields | field;
if (newUsedFields == usedFields)
{
throw new InvalidPatternException(TextErrorMessages.RepeatedFieldInPattern, characterInPattern);
}
usedFields = newUsedFields;
}
internal override ParseResult <OffsetDate> CalculateValue(PatternFields usedFields, string text)
{
ParseResult <LocalDate> dateResult = Date.CalculateValue(usedFields & PatternFields.AllDateFields, text);
if (!dateResult.Success)
{
return(dateResult.ConvertError <OffsetDate>());
}
LocalDate date = dateResult.Value;
return(ParseResult <OffsetDate> .ForValue(date.WithOffset(Offset)));
}
private static CharacterHandler <Duration, DurationParseBucket> CreatePartialHandler
(PatternFields field, long ticksPerUnit, int unitsPerContainer)
{
return((pattern, builder) =>
{
int count = pattern.GetRepeatCount(2);
builder.AddField(field, pattern.Current);
builder.AddParseValueAction(count, 2, pattern.Current, 0, unitsPerContainer - 1,
(bucket, value) => bucket.NegativeTicks -= value * ticksPerUnit);
builder.AddFormatLeftPad(count, duration => (int)((GetPositiveTicks(duration) / (ulong)ticksPerUnit) % (uint)unitsPerContainer));
});
}
/// <summary>
/// Calculates the value from the parsed pieces.
/// </summary>
internal override ParseResult <Offset> CalculateValue(PatternFields usedFields, string text)
{
int seconds = Hours * NodaConstants.SecondsPerHour +
Minutes * NodaConstants.SecondsPerMinute +
Seconds;
if (IsNegative)
{
seconds = -seconds;
}
return(ParseResult <Offset> .ForValue(Offset.FromSeconds(seconds)));
}
/// <summary>
/// Calculates the value from the parsed pieces.
/// </summary>
internal override ParseResult <Duration> CalculateValue(PatternFields usedFields, string text)
{
if (IsNegative)
{
currentNanos = -currentNanos;
}
if (currentNanos < Duration.MinNanoseconds || currentNanos > Duration.MaxNanoseconds)
{
return(ParseResult <Duration> .ForInvalidValuePostParse(text, TextErrorMessages.OverallValueOutOfRange,
typeof(Duration)));
}
return(ParseResult <Duration> .ForValue(Duration.FromNanoseconds(currentNanos)));
}
internal override ParseResult <OffsetDateTime> CalculateValue(PatternFields usedFields, string text)
{
var localResult = LocalDateTimePatternParser.LocalDateTimeParseBucket.CombineBuckets(usedFields, Date, Time, text);
if (!localResult.Success)
{
return(localResult.ConvertError <OffsetDateTime>());
}
var localDateTime = localResult.Value;
return(ParseResult <OffsetDateTime> .ForValue(localDateTime.WithOffset(Offset)));
}
/// <summary>
/// Calculates the value from the parsed pieces.
/// </summary>
internal override ParseResult <Offset> CalculateValue(PatternFields usedFields)
{
int milliseconds = Hours * NodaConstants.MillisecondsPerHour +
Minutes * NodaConstants.MillisecondsPerMinute +
Seconds * NodaConstants.MillisecondsPerSecond +
Milliseconds;
if (IsNegative)
{
milliseconds = -milliseconds;
}
return(ParseResult <Offset> .ForValue(Offset.FromMilliseconds(milliseconds)));
}
/// <summary>
/// Calculates the value from the parsed pieces.
/// </summary>
internal override ParseResult <Duration> CalculateValue(PatternFields usedFields, string text)
{
if (IsNegative)
{
currentNanos = -currentNanos;
}
if (currentNanos < MinNanos || currentNanos > MaxNanos)
{
// TODO: Work out whether this is really the best message. (Created a new one...)
return(ParseResult <Duration> .ForInvalidValuePostParse(text, Messages.Parse_OverallValueOutOfRange,
typeof(Duration)));
}
return(ParseResult <Duration> .ForValue(Duration.FromNanoseconds(currentNanos)));
}
private static CharacterHandler <Duration, DurationParseBucket> CreatePartialHandler
(PatternFields field, long nanosecondsPerUnit, int unitsPerContainer)
{
return((pattern, builder) =>
{
int count = pattern.GetRepeatCount(2);
builder.AddField(field, pattern.Current);
builder.AddParseValueAction(count, 2, pattern.Current, 0, unitsPerContainer - 1,
(bucket, value) => bucket.AddUnits(value, nanosecondsPerUnit));
// This is never used for anything larger than a day, so the day part is irrelevant.
builder.AddFormatLeftPad(count,
duration => (int)(((Math.Abs(duration.NanosecondOfDay) / nanosecondsPerUnit)) % unitsPerContainer),
assumeNonNegative: true,
assumeFitsInCount: count == 2);
});
}
private static CharacterHandler <Duration, DurationParseBucket> CreateTotalHandler
(PatternFields field, long ticksPerUnit)
{
return((pattern, builder) =>
{
int count = pattern.GetRepeatCount(10);
// AddField would throw an inappropriate exception here, so handle it specially.
if ((builder.UsedFields & PatternFields.TotalDuration) != 0)
{
throw new InvalidPatternException(Messages.Parse_MultipleCapitalDurationFields);
}
builder.AddField(field, pattern.Current);
builder.AddField(PatternFields.TotalDuration, pattern.Current);
builder.AddParseValueAction(count, 10, pattern.Current, 0, int.MaxValue, (bucket, value) => bucket.NegativeTicks -= value * ticksPerUnit);
builder.AddFormatLeftPad(count, duration => (int)(GetPositiveTicks(duration) / (ulong)ticksPerUnit));
});
}
/// <summary>
/// Validates the combination of fields used.
/// </summary>
internal void ValidateUsedFields()
{
// We assume invalid combinations are global across all parsers. The way that
// the patterns are parsed ensures we never end up with any invalid individual fields
// (e.g. time fields within a date pattern).
if ((usedFields & (PatternFields.Era | PatternFields.YearOfEra)) == PatternFields.Era)
{
throw new InvalidPatternException(TextErrorMessages.EraWithoutYearOfEra);
}
const PatternFields calendarAndEra = PatternFields.Era | PatternFields.Calendar;
if ((usedFields & calendarAndEra) == calendarAndEra)
{
throw new InvalidPatternException(TextErrorMessages.CalendarAndEra);
}
}
private ParseResult <LocalTime> DetermineHour(PatternFields usedFields, string text, out int hour)
{
hour = 0;
if (usedFields.HasAny(PatternFields.Hours24))
{
if (usedFields.HasAll(PatternFields.Hours12 | PatternFields.Hours24))
{
if (Hours12 % 12 != Hours24 % 12)
{
return(ParseResult <LocalTime> .InconsistentValues(text, 'H', 'h'));
}
}
if (usedFields.HasAny(PatternFields.AmPm))
{
if (Hours24 / 12 != AmPm)
{
return(ParseResult <LocalTime> .InconsistentValues(text, 'H', 't'));
}
}
hour = Hours24;
return(null);
}
// Okay, it's definitely valid - but we've still got 8 possibilities for what's been specified.
switch (usedFields & (PatternFields.Hours12 | PatternFields.AmPm))
{
case PatternFields.Hours12 | PatternFields.AmPm:
hour = (Hours12 % 12) + AmPm * 12;
break;
case PatternFields.Hours12:
// Preserve AM/PM from template value
hour = (Hours12 % 12) + (TemplateValue.Hour / 12) * 12;
break;
case PatternFields.AmPm:
// Preserve 12-hour hour of day from template value, use specified AM/PM
hour = (TemplateValue.Hour % 12) + AmPm * 12;
break;
case 0:
hour = TemplateValue.Hour;
break;
}
return(null);
}
private static CharacterHandler <Duration, DurationParseBucket> CreateTotalHandler
(PatternFields field, long nanosecondsPerUnit, int unitsPerDay, long maxValue)
{
return((pattern, builder) =>
{
// Needs to be big enough for 1449551462400 seconds
int count = pattern.GetRepeatCount(13);
// AddField would throw an inappropriate exception here, so handle it specially.
if ((builder.UsedFields & PatternFields.TotalDuration) != 0)
{
throw new InvalidPatternException(TextErrorMessages.MultipleCapitalDurationFields);
}
builder.AddField(field, pattern.Current);
builder.AddField(PatternFields.TotalDuration, pattern.Current);
builder.AddParseInt64ValueAction(count, 13, pattern.Current, 0, maxValue, (bucket, value) => bucket.AddUnits(value, nanosecondsPerUnit));
builder.AddFormatAction((value, sb) => FormatHelper.LeftPadNonNegativeInt64(GetPositiveNanosecondUnits(value, nanosecondsPerUnit, unitsPerDay), count, sb));
});
}
/// <summary>
/// Calculates the value from the parsed pieces.
/// </summary>
internal override ParseResult <LocalTime> CalculateValue(PatternFields usedFields, string text)
{
if (AmPm == 2)
{
AmPm = templateValue.Hour / 12;
}
int hour;
ParseResult <LocalTime> failure = DetermineHour(usedFields, text, out hour);
if (failure != null)
{
return(failure);
}
int minutes = IsFieldUsed(usedFields, PatternFields.Minutes) ? Minutes : templateValue.Minute;
int seconds = IsFieldUsed(usedFields, PatternFields.Seconds) ? Seconds : templateValue.Second;
int fraction = IsFieldUsed(usedFields, PatternFields.FractionalSeconds) ? FractionalSeconds : templateValue.TickOfSecond;
return(ParseResult <LocalTime> .ForValue(LocalTime.FromHourMinuteSecondTick(hour, minutes, seconds, fraction)));
}
public SteppedPattern(Action <TResult, StringBuilder> formatActions,
ParseAction[] parseActions,
Func <TBucket> bucketProvider,
PatternFields usedFields,
TResult sample)
{
this.formatActions = formatActions;
this.parseActions = parseActions;
this.bucketProvider = bucketProvider;
this.usedFields = usedFields;
// Format the sample value to work out the expected length, so we
// can use that when creating a StringBuilder. This will definitely not always
// be appropriate, but it's a start.
StringBuilder builder = new StringBuilder();
formatActions(sample, builder);
expectedLength = builder.Length;
}
internal override ParseResult <AnnualDate> CalculateValue(PatternFields usedFields, string text)
{
// This will set MonthOfYearNumeric if necessary
var failure = DetermineMonth(usedFields, text);
if (failure != null)
{
return(failure);
}
int day = usedFields.HasAny(PatternFields.DayOfMonth) ? DayOfMonth : TemplateValue.Day;
// Validate for the year 2000, just like the AnnualDate constructor does.
if (day > CalendarSystem.Iso.GetDaysInMonth(2000, MonthOfYearNumeric))
{
return(ParseResult <AnnualDate> .DayOfMonthOutOfRangeNoYear(text, day, MonthOfYearNumeric));
}
return(ParseResult <AnnualDate> .ForValue(new AnnualDate(MonthOfYearNumeric, day)));
}
/// <summary>
/// Combines the values in a date bucket with the values in a time bucket.
/// </summary>
/// <remarks>
/// This would normally be the <see cref="CalculateValue"/> method, but we want
/// to be able to use the same logic when parsing an <see cref="OffsetDateTime"/>
/// and <see cref="ZonedDateTime"/>.
/// </remarks>
internal static ParseResult <LocalDateTime> CombineBuckets(
PatternFields usedFields,
LocalDatePatternParser.LocalDateParseBucket dateBucket,
LocalTimePatternParser.LocalTimeParseBucket timeBucket,
string text)
{
// Handle special case of hour = 24
bool hour24 = false;
if (timeBucket.Hours24 == 24)
{
timeBucket.Hours24 = 0;
hour24 = true;
}
ParseResult <LocalDate> dateResult = dateBucket.CalculateValue(usedFields & PatternFields.AllDateFields, text);
if (!dateResult.Success)
{
return(dateResult.ConvertError <LocalDateTime>());
}
ParseResult <LocalTime> timeResult = timeBucket.CalculateValue(usedFields & PatternFields.AllTimeFields, text);
if (!timeResult.Success)
{
return(timeResult.ConvertError <LocalDateTime>());
}
LocalDate date = dateResult.Value;
LocalTime time = timeResult.Value;
if (hour24)
{
if (time != LocalTime.Midnight)
{
return(ParseResult <LocalDateTime> .InvalidHour24(text));
}
date = date.PlusDays(1);
}
return(ParseResult <LocalDateTime> .ForValue(date + time));
}
/// <summary>
/// Calculates the value from the parsed pieces.
/// </summary>
internal override ParseResult <LocalTime> CalculateValue(PatternFields usedFields, string text)
{
if (usedFields.HasAny(PatternFields.EmbeddedTime))
{
return(ParseResult <LocalTime> .ForValue(LocalTime.FromHourMinuteSecondNanosecond(Hours24, Minutes, Seconds, FractionalSeconds)));
}
if (AmPm == 2)
{
AmPm = TemplateValue.Hour / 12;
}
ParseResult <LocalTime> failure = DetermineHour(usedFields, text, out int hour);
if (failure != null)
{
return(failure);
}
int minutes = usedFields.HasAny(PatternFields.Minutes) ? Minutes : TemplateValue.Minute;
int seconds = usedFields.HasAny(PatternFields.Seconds) ? Seconds : TemplateValue.Second;
int fraction = usedFields.HasAny(PatternFields.FractionalSeconds) ? FractionalSeconds : TemplateValue.NanosecondOfSecond;
return(ParseResult <LocalTime> .ForValue(LocalTime.FromHourMinuteSecondNanosecond(hour, minutes, seconds, fraction)));
}
internal override ParseResult <LocalDate> CalculateValue(PatternFields usedFields, string text)
{
if (usedFields.HasAny(PatternFields.EmbeddedDate))
{
return(ParseResult <LocalDate> .ForValue(new LocalDate(Year, MonthOfYearNumeric, DayOfMonth, Calendar)));
}
// This will set Year if necessary
ParseResult <LocalDate> failure = DetermineYear(usedFields, text);
if (failure != null)
{
return(failure);
}
// This will set MonthOfYearNumeric if necessary
failure = DetermineMonth(usedFields, text);
if (failure != null)
{
return(failure);
}
int day = usedFields.HasAny(PatternFields.DayOfMonth) ? DayOfMonth : TemplateValue.Day;
if (day > Calendar.GetDaysInMonth(Year, MonthOfYearNumeric))
{
return(ParseResult <LocalDate> .DayOfMonthOutOfRange(text, day, MonthOfYearNumeric, Year));
}
LocalDate value = new LocalDate(Year, MonthOfYearNumeric, day, Calendar);
if (usedFields.HasAny(PatternFields.DayOfWeek) && DayOfWeek != value.DayOfWeek)
{
return(ParseResult <LocalDate> .InconsistentDayOfWeekTextValue(text));
}
// FIXME: If we got an era, check that the resulting date really lies within that era.
return(ParseResult <LocalDate> .ForValue(value));
}
internal override ParseResult <LocalDateTime> CalculateValue(PatternFields usedFields, string text) => CombineBuckets(usedFields, Date, Time, text);
private ParseResult <LocalDate> DetermineYear(PatternFields usedFields)
{
int yearFromEra = 0;
if (IsFieldUsed(usedFields, PatternFields.YearOfEra))
{
// Odd to have a year-of-era without era, but it's valid...
if (!IsFieldUsed(usedFields, PatternFields.Era))
{
EraIndex = Calendar.Eras.IndexOf(templateValue.Era);
}
// Find the absolute year from the year-of-era and era
if (YearOfEra < Calendar.GetMinYearOfEra(EraIndex) ||
YearOfEra > Calendar.GetMaxYearOfEra(EraIndex))
{
return(ParseResult <LocalDate> .YearOfEraOutOfRange(YearOfEra, EraIndex, Calendar));
}
yearFromEra = Calendar.GetAbsoluteYear(YearOfEra, EraIndex);
}
// Note: we can't have YearTwoDigits without Year, hence there are only 6 options here rather than 8.
switch (usedFields & (PatternFields.Year | PatternFields.YearOfEra | PatternFields.YearTwoDigits))
{
case PatternFields.Year:
// Fine, we'll just use the Year value we've been provided
break;
case PatternFields.Year | PatternFields.YearTwoDigits:
Year = GetAbsoluteYearFromTwoDigits(templateValue.Year, Year);
break;
case PatternFields.YearOfEra:
Year = yearFromEra;
break;
case PatternFields.YearOfEra | PatternFields.Year | PatternFields.YearTwoDigits:
// We've been given a year of era, but only a two digit year. The year of era
// takes precedence, so we just check that the two digits are correct.
// This is a pretty bizarre situation...
if ((Math.Abs(yearFromEra) % 100) != Year)
{
return(ParseResult <LocalDate> .InconsistentValues('y', 'Y'));
}
Year = yearFromEra;
break;
case PatternFields.YearOfEra | PatternFields.Year:
if (Year != yearFromEra)
{
return(ParseResult <LocalDate> .InconsistentValues('y', 'Y'));
}
Year = yearFromEra;
break;
case 0:
Year = templateValue.Year;
break;
// No default: it would be impossible.
}
if (Year > Calendar.MaxYear || Year < Calendar.MinYear)
{
// The field can't be YearOfEra, as we've already validated that earlier.
return(ParseResult <LocalDate> .FieldValueOutOfRange(Year, 'y'));
}
return(null);
}
internal override ParseResult <LocalDateTime> CalculateValue(PatternFields usedFields)
{
return(CombineBuckets(usedFields, Date, Time));
}
/// <summary>
/// Returns a handler for a zero-padded purely-numeric field specifier, such as "seconds", "minutes", "24-hour", "12-hour" etc.
/// </summary>
/// <param name="maxCount">Maximum permissable count (usually two)</param>
/// <param name="field">Field to remember that we've seen</param>
/// <param name="minValue">Minimum valid value for the field (inclusive)</param>
/// <param name="maxValue">Maximum value value for the field (inclusive)</param>
/// <param name="getter">Delegate to retrieve the field value when formatting</param>
/// <param name="setter">Delegate to set the field value into a bucket when parsing</param>
/// <returns>The pattern parsing failure, or null on success.</returns>
internal static CharacterHandler <TResult, TBucket> HandlePaddedField(int maxCount, PatternFields field, int minValue, int maxValue, Func <TResult, int> getter,
Action <TBucket, int> setter)
{
return((pattern, builder) =>
{
int count = pattern.GetRepeatCount(maxCount);
builder.AddField(field, pattern.Current);
builder.AddParseValueAction(count, maxCount, pattern.Current, minValue, maxValue, setter);
builder.AddFormatLeftPad(count, getter, assumeNonNegative: minValue >= 0, assumeFitsInCount: count == maxCount);
});
}
/// <summary> /// Returns true if the given set of fields contains all of the target fields. /// </summary> internal static bool HasAll(this PatternFields fields, PatternFields target) => (fields & target) == target;
internal override ParseResult <LocalDate> CalculateValue(PatternFields usedFields, string value)
{
throw new NotImplementedException();
}
/// <summary> /// Returns true if the given set of fields contains any of the target fields. /// </summary> internal static bool HasAny(this PatternFields fields, PatternFields target) => (fields & target) != 0;