public void ResourcePresence(Era era)
{
Assert.NotNull(PatternResources.ResourceManager.GetString(era.ResourceIdentifier, CultureInfo.InvariantCulture),
"Missing resource for " + era.ResourceIdentifier);
}
private CalendarSystem(CalendarOrdinal ordinal, string id, string name, YearMonthDayCalculator yearMonthDayCalculator, Era singleEra)
: this(ordinal, id, name, yearMonthDayCalculator, 4, new SingleEraCalculator(singleEra, yearMonthDayCalculator))
{
}
internal BasicSingleEraDateTimeField(Era era)
: base(DateTimeFieldType.Era, UnsupportedDurationField.Eras)
{
this.era = era;
}
internal override int GetMinYearOfEra(Era era)
{
ValidateEra(era);
return(minYear);
}
internal SingleEraCalculator(Era era, YearMonthDayCalculator ymdCalculator) : base(era)
{
minYear = ymdCalculator.MinYear;
maxYear = ymdCalculator.MaxYear;
this.era = era;
}
internal SingleEraCalculator(Era era, YearMonthDayCalculator ymdCalculator) : base(era)
{
minYear = ymdCalculator.MinYear;
maxYear = ymdCalculator.MaxYear;
this.era = era;
}
internal override int GetAbsoluteYear(int yearOfEra, Era era)
{
ValidateEra(era);
Preconditions.CheckArgumentRange(nameof(yearOfEra), yearOfEra, minYear, maxYear);
return(yearOfEra);
}
internal abstract int GetMaxYearOfEra(Era era);
internal abstract int GetAbsoluteYear(int yearOfEra, Era era);
internal override int GetMinYearOfEra([NotNull] Era era)
{
ValidateEra(era);
return(1);
}
internal override int GetMaxYearOfEra([NotNull] Era era)
{
ValidateEra(era);
return(era == Era.Common ? maxYearOfAd : maxYearOfBc);
}
/// <summary>
/// Convenience method to perform nullity and validity checking on the era, converting it to
/// the index within the list of eras supported by this calendar system.
/// </summary>
private int GetEraIndex(Era era)
{
if (era == null)
{
throw new ArgumentNullException("era");
}
int index = Eras.IndexOf(era);
if (index == -1)
{
throw new ArgumentException("Era does not belong to this calendar", "era");
}
return index;
}
/// <summary>
/// Returns the minimum valid year in the given era.
/// </summary>
/// <param name="era">The era in which to find the greatest year</param>
/// <returns>The minimum valid year in the given eraera.</returns>
/// <exception cref="ArgumentNullException"><paramref name="era"/> is null</exception>
/// <exception cref="ArgumentException"><paramref name="era"/> is not an era of this calendar</exception>
public int GetMinYearOfEra(Era era)
{
return GetMinYearOfEra(GetEraIndex(era));
}
/// <summary>
/// Returns the "absolute year" (the one used throughout most of the API, without respect to eras)
/// from a year-of-era and an era.
/// </summary>
/// <param name="yearOfEra">The year within the era.</param>
/// <param name="era">The era in which to consider the year</param>
/// <returns>The absolute year represented by the specified year of era.</returns>
/// <exception cref="ArgumentNullException"><paramref name="era"/> is null</exception>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="yearOfEra"/> is out of the range of years for the given era</exception>
/// <exception cref="ArgumentException"><paramref name="era"/> is not an era of this calendar</exception>
public int GetAbsoluteYear(int yearOfEra, Era era)
{
return GetAbsoluteYear(yearOfEra, GetEraIndex(era));
}
internal abstract int GetAbsoluteYear(int yearOfEra, [NotNull] Era era);
internal abstract int GetMaxYearOfEra([NotNull] Era era);
