#nullable disable
using System.Collections;
using System.Collections.Generic;
 
namespace Microsoft.Maui.Controls
{
	internal sealed class CastingEnumerator<T, TFrom> : IEnumerator<T> where T : class where TFrom : class
	{
		readonly IEnumerator<TFrom> _enumerator;
 
		bool _disposed;
 
		public CastingEnumerator(IEnumerator<TFrom> enumerator)
		{
			_enumerator = enumerator;
		}
 
		public void Dispose()
		{
			if (_disposed)
				return;
			_disposed = true;
 
			_enumerator.Dispose();
		}
 
		object IEnumerator.Current
		{
			get { return Current; }
		}
 
		public bool MoveNext()
		{
			return _enumerator.MoveNext();
		}
 
		public void Reset()
		{
			_enumerator.Reset();
		}
 
		public T Current
		{
			get { return _enumerator.Current as T; }
		}
	}
}