using System.Runtime.InteropServices;
using System.Runtime.Serialization;
using System.Threading;

namespace System
{
	[Serializable]
	[ComVisible(true)]
	public class OperationCanceledException : SystemException
	{
		private const int Result = -2146233029;

		private CancellationToken? token;

		public CancellationToken CancellationToken
		{
			get
			{
				if (!token.HasValue)
				{
					return CancellationToken.None;
				}
				return token.Value;
			}
		}

		public OperationCanceledException()
			: base("The operation was canceled.")
		{
			base.HResult = -2146233029;
		}

		public OperationCanceledException(string message)
			: base(message)
		{
			base.HResult = -2146233029;
		}

		public OperationCanceledException(string message, Exception innerException)
			: base(message, innerException)
		{
			base.HResult = -2146233029;
		}

		protected OperationCanceledException(SerializationInfo info, StreamingContext context)
			: base(info, context)
		{
		}

		public OperationCanceledException(CancellationToken token)
			: this()
		{
			this.token = token;
		}

		public OperationCanceledException(string message, CancellationToken token)
			: this(message)
		{
			this.token = token;
		}

		public OperationCanceledException(string message, Exception innerException, CancellationToken token)
			: base(message, innerException)
		{
			this.token = token;
		}
	}
}