public sealed override bool IsEnumDefined(object value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
if (!IsEnum)
{
throw new ArgumentException(SR.Arg_MustBeEnum);
}
if (value is string valueAsString)
{
EnumInfo enumInfo = Enum.GetEnumInfo(this);
foreach (string name in enumInfo.Names)
{
if (valueAsString == name)
{
return(true);
}
}
return(false);
}
else
{
ulong rawValue;
if (!Enum.TryGetUnboxedValueOfEnumOrInteger(value, out rawValue))
{
if (Type.IsIntegerType(value.GetType()))
{
throw new ArgumentException(SR.Format(SR.Arg_EnumUnderlyingTypeAndObjectMustBeSameType, value.GetType(), Enum.InternalGetUnderlyingType(this)));
}
else
{
throw new InvalidOperationException(SR.InvalidOperation_UnknownEnumType);
}
}
if (value is Enum)
{
if (!Enum.ValueTypeMatchesEnumType(this, value))
{
throw new ArgumentException(SR.Format(SR.Arg_EnumAndObjectMustBeSameType, value.GetType(), this));
}
}
else
{
Type underlyingType = Enum.InternalGetUnderlyingType(this);
if (!(underlyingType.TypeHandle.ToEETypePtr() == value.EETypePtr))
{
throw new ArgumentException(SR.Format(SR.Arg_EnumUnderlyingTypeAndObjectMustBeSameType, value.GetType(), underlyingType));
}
}
return(Enum.GetEnumName(this, rawValue) != null);
}
}
public override string?GetEnumName(object value)
{
ArgumentNullException.ThrowIfNull(value);
RuntimeType valueType = (RuntimeType)value.GetType();
if (!(valueType.IsActualEnum || IsIntegerType(valueType)))
{
throw new ArgumentException(SR.Arg_MustBeEnumBaseTypeOrEnum, nameof(value));
}
ulong ulValue = Enum.ToUInt64(value);
return(Enum.GetEnumName(this, ulValue));
}
private static string InternalFormat(RuntimeType eT, ulong value)
{
Debug.Assert(eT != null);
// These values are sorted by value. Don't change this
TypeValuesAndNames entry = GetCachedValuesAndNames(eT, true);
if (!entry.IsFlag) // Not marked with Flags attribute
{
return(Enum.GetEnumName(eT, value));
}
else // These are flags OR'ed together (We treat everything as unsigned types)
{
return(InternalFlagsFormat(eT, entry, value));
}
}
public override string?GetEnumName(object value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
Type valueType = value.GetType();
if (!(valueType.IsEnum || IsIntegerType(valueType)))
{
throw new ArgumentException(SR.Arg_MustBeEnumBaseTypeOrEnum, nameof(value));
}
ulong ulValue = Enum.ToUInt64(value);
return(Enum.GetEnumName(this, ulValue));
}
public sealed override string?GetEnumName(object value)
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
ulong rawValue;
if (!Enum.TryGetUnboxedValueOfEnumOrInteger(value, out rawValue))
{
throw new ArgumentException(SR.Arg_MustBeEnumBaseTypeOrEnum, nameof(value));
}
// For desktop compatibility, do not bounce an incoming integer that's the wrong size.
// Do a value-preserving cast of both it and the enum values and do a 64-bit compare.
if (!IsEnum)
{
throw new ArgumentException(SR.Arg_MustBeEnum);
}
return(Enum.GetEnumName(this, rawValue));
}
