InheritanceAttribute.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Event)]
public sealed class InheritanceAttribute : Attribute
{
    public static readonly InheritanceAttribute Inherited = new InheritanceAttribute(InheritanceLevel.Inherited);
 
    public static readonly InheritanceAttribute InheritedReadOnly = new InheritanceAttribute(InheritanceLevel.InheritedReadOnly);
 
    public static readonly InheritanceAttribute NotInherited = new InheritanceAttribute(InheritanceLevel.NotInherited);
 
    public static readonly InheritanceAttribute Default = NotInherited;
 
    public InheritanceLevel InheritanceLevel { get; }
 
    public InheritanceAttribute()
    {
        InheritanceLevel = Default.InheritanceLevel;
    }
 
    public InheritanceAttribute(InheritanceLevel inheritanceLevel)
    {
        InheritanceLevel = inheritanceLevel;
    }
 
    public override bool Equals([NotNullWhen(true)] object? value)
    {
        if (value == this)
        {
            return true;
        }
        if (!(value is InheritanceAttribute))
        {
            return false;
        }
        InheritanceLevel inheritanceLevel = ((InheritanceAttribute)value).InheritanceLevel;
        return inheritanceLevel == InheritanceLevel;
    }
 
    public override int GetHashCode()
    {
        return base.GetHashCode();
    }
 
    public override bool IsDefaultAttribute()
    {
        return Equals(Default);
    }
 
    public override string ToString()
    {
        return TypeDescriptor.GetConverterTrimUnsafe(typeof(InheritanceLevel)).ConvertToString(InheritanceLevel);
    }
}