TypeConverterAttribute.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.ComponentModel;
 
[AttributeUsage(AttributeTargets.All)]
public sealed class TypeConverterAttribute : Attribute
{
    public static readonly TypeConverterAttribute Default = new TypeConverterAttribute();
 
    [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]
    public string ConverterTypeName { get; }
 
    public TypeConverterAttribute()
    {
        ConverterTypeName = string.Empty;
    }
 
    public TypeConverterAttribute([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] Type type)
    {
        if (type == null)
        {
            throw new ArgumentNullException("type");
        }
        ConverterTypeName = type.AssemblyQualifiedName;
    }
 
    public TypeConverterAttribute([DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)] string typeName)
    {
        if (typeName == null)
        {
            throw new ArgumentNullException("typeName");
        }
        ConverterTypeName = typeName;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is TypeConverterAttribute typeConverterAttribute)
        {
            return typeConverterAttribute.ConverterTypeName == ConverterTypeName;
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return ConverterTypeName.GetHashCode();
    }
}