public Enum Parse([NotNull] string unitAbbreviation, Type unitType, [CanBeNull] IFormatProvider formatProvider = null)
{
if (unitAbbreviation == null)
{
throw new ArgumentNullException(nameof(unitAbbreviation));
}
unitAbbreviation = unitAbbreviation.Trim();
if (!_unitAbbreviationsCache.TryGetUnitValueAbbreviationLookup(unitType, formatProvider, out var abbreviations))
{
throw new UnitNotFoundException($"No abbreviations defined for unit type [{unitType}] for culture [{formatProvider}].");
}
var unitIntValues = abbreviations.GetUnitsForAbbreviation(unitAbbreviation, ignoreCase: true);
// Narrow the search if too many hits, for example Megabar "Mbar" and Millibar "mbar" need to be distinguished
if (unitIntValues.Count > 1)
{
unitIntValues = abbreviations.GetUnitsForAbbreviation(unitAbbreviation, ignoreCase: false);
}
switch (unitIntValues.Count)
{
case 1:
return((Enum)Enum.ToObject(unitType, unitIntValues[0]));
case 0:
throw new UnitNotFoundException($"Unit not found with abbreviation [{unitAbbreviation}] for unit type [{unitType}].");
default:
string unitsCsv = string.Join(", ", unitIntValues.Select(x => Enum.GetName(unitType, x)).ToArray());
throw new AmbiguousUnitParseException(
$"Cannot parse \"{unitAbbreviation}\" since it could be either of these: {unitsCsv}");
}
}
object Parse([NotNull] string unitAbbreviation, Type unitType, [CanBeNull] IFormatProvider formatProvider = null)
{
if (unitAbbreviation == null)
{
throw new ArgumentNullException(nameof(unitAbbreviation));
}
unitAbbreviation = unitAbbreviation.Trim();
if (!_unitAbbreviationsCache.TryGetUnitValueAbbreviationLookup(unitType, formatProvider, out var abbreviations))
{
throw new UnitNotFoundException($"No abbreviations defined for unit type [{unitType}] for culture [{formatProvider}].");
}
var unitIntValues = abbreviations.GetUnitsForAbbreviation(unitAbbreviation);
switch (unitIntValues.Count)
{
case 1:
return(unitIntValues[0]);
case 0:
throw new UnitNotFoundException($"Unit not found with abbreviation [{unitAbbreviation}] for unit type [{unitType}].");
default:
string unitsCsv = string.Join(", ", unitIntValues.Select(x => Enum.GetName(unitType, x)).ToArray());
throw new AmbiguousUnitParseException(
$"Cannot parse \"{unitAbbreviation}\" since it could be either of these: {unitsCsv}");
}
}
