StackOfTConverter.cs

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using System.Collections.Generic;
 
namespace System.Text.Json.Serialization.Converters;
 
internal sealed class StackOfTConverter<TCollection, TElement> : IEnumerableDefaultConverter<TCollection, TElement> where TCollection : Stack<TElement>
{
    protected override void Add(in TElement value, ref ReadStack state)
    {
        ((TCollection)state.Current.ReturnValue).Push(value);
    }
 
    protected override void CreateCollection(ref Utf8JsonReader reader, ref ReadStack state, JsonSerializerOptions options)
    {
        if (state.Current.JsonTypeInfo.CreateObject == null)
        {
            ThrowHelper.ThrowNotSupportedException_SerializationNotSupported(state.Current.JsonTypeInfo.Type);
        }
        state.Current.ReturnValue = state.Current.JsonTypeInfo.CreateObject();
    }
}