GenericMethodHolder.cs

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using System.Collections.Generic;
 
namespace System.Text.Json.Serialization.Metadata;
 
internal abstract class GenericMethodHolder
{
    public abstract object DefaultValue { get; }
 
    public abstract bool IsDefaultValue(object value);
 
    public static GenericMethodHolder CreateHolder(Type type)
    {
        Type type2 = typeof(GenericMethodHolder<>).MakeGenericType(type);
        return (GenericMethodHolder)Activator.CreateInstance(type2);
    }
}
internal sealed class GenericMethodHolder<T> : GenericMethodHolder
{
    public override object DefaultValue => default(T);
 
    public override bool IsDefaultValue(object value)
    {
        return EqualityComparer<T>.Default.Equals(default(T), (T)value);
    }
}