using System.Collections.Generic; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; namespace System.Text.Json.Serialization.Converters { internal sealed class StackOfTConverter<TCollection, TElement> : IEnumerableDefaultConverter<TCollection, TElement> where TCollection : Stack<TElement> { internal override bool CanPopulate => true; protected override void Add([In] [System.Runtime.CompilerServices.IsReadOnly] TElement value, ref ReadStack state) { ((TCollection)state.Current.ReturnValue).Push(value); } protected override void CreateCollection(ref Utf8JsonReader reader, [System.Runtime.CompilerServices.ScopedRef] ref ReadStack state, JsonSerializerOptions options) { if (!(state.ParentProperty?.TryGetPrePopulatedValue(ref state) ?? false)) { if (state.Current.JsonTypeInfo.CreateObject == null) ThrowHelper.ThrowNotSupportedException_SerializationNotSupported(state.Current.JsonTypeInfo.Type); state.Current.ReturnValue = state.Current.JsonTypeInfo.CreateObject(); } } } }