/// <summary>
/// Constructs an object to describe the provided enumeration type.
/// </summary>
/// <param name="type">The enumeration type to describe.</param>
protected EnumArgumentType(Type type) : base(type)
{
if (!type.GetTypeInfo().IsEnum)
{
throw new ArgumentOutOfRangeException(nameof(type));
}
UnderlyingType = Enum.GetUnderlyingType(type);
if (UnderlyingType == null)
{
throw new ArgumentOutOfRangeException(nameof(type));
}
if (!ArgumentType.TryGetType(UnderlyingType, out IArgumentType underlyingArgType))
{
throw new ArgumentOutOfRangeException(nameof(type));
}
UnderlyingIntegerType = underlyingArgType as IntegerArgumentType;
if (UnderlyingIntegerType == null)
{
throw new ArgumentOutOfRangeException(nameof(type));
}
_values = GetAllValues(type).ToList();
_valuesByCaseSensitiveName = ConstructValueNameMap(_values, true);
_valuesByCaseInsensitiveName = ConstructValueNameMap(_values, false);
_valuesByValue = _values.ToDictionary(v => v.Value, v => v);
}
/// <summary>
/// Primary constructor.
/// </summary>
/// <param name="type">The flag-based enumeration type to describe.
/// </param>
public FlagsEnumArgumentType(Type type) : base(type)
{
if (type.GetTypeInfo().GetSingleAttribute <FlagsAttribute>() == null)
{
throw new ArgumentOutOfRangeException(nameof(type));
}
_underlyingType = Enum.GetUnderlyingType(type);
if (!ArgumentType.TryGetType(_underlyingType, out IArgumentType underlyingArgType))
{
throw new NotSupportedException(nameof(type));
}
_underlyingIntegerType = (IntegerArgumentType)underlyingArgType;
}