private void PerformAbbreviationMapping(Type unitType, int unitValue, IFormatProvider formatProvider, bool setAsDefault, params string[] abbreviations)
{
if (!unitType.IsEnum)
throw new ArgumentException("Must be an enum type.", nameof(unitType));
if (abbreviations == null)
throw new ArgumentNullException(nameof(abbreviations));
formatProvider = formatProvider ?? CultureInfo.CurrentUICulture;
if (!_lookupsForCulture.TryGetValue(formatProvider, out var quantitiesForProvider))
quantitiesForProvider = _lookupsForCulture[formatProvider] = new UnitTypeToLookup();
if (!quantitiesForProvider.TryGetValue(unitType, out var unitToAbbreviations))
unitToAbbreviations = quantitiesForProvider[unitType] = new UnitValueAbbreviationLookup();
foreach (var abbr in abbreviations)
{
unitToAbbreviations.Add(unitValue, abbr, setAsDefault);
}
}
internal bool TryGetUnitValueAbbreviationLookup(Type unitType, IFormatProvider formatProvider, out UnitValueAbbreviationLookup unitToAbbreviations)
{
unitToAbbreviations = null;
formatProvider = formatProvider ?? CultureInfo.CurrentUICulture;
if (!_lookupsForCulture.TryGetValue(formatProvider, out var quantitiesForProvider))
return formatProvider != FallbackCulture ? TryGetUnitValueAbbreviationLookup(unitType, FallbackCulture, out unitToAbbreviations) : false;
if (!quantitiesForProvider.TryGetValue(unitType, out unitToAbbreviations))
return formatProvider != FallbackCulture ? TryGetUnitValueAbbreviationLookup(unitType, FallbackCulture, out unitToAbbreviations) : false;
return true;
}
