// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
using System.Threading;
 
namespace System
{
    /// <summary>
    /// The exception that is thrown in a thread upon cancellation of an operation that the thread was executing.
    /// </summary>
    [Serializable]
    [TypeForwardedFrom("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")]
    public class OperationCanceledException : SystemException
    {
        [NonSerialized]
        private CancellationToken _cancellationToken;
 
        public CancellationToken CancellationToken
        {
            get => _cancellationToken;
            private set => _cancellationToken = value;
        }
 
        public OperationCanceledException()
            : base(SR.OperationCanceled)
        {
            HResult = HResults.COR_E_OPERATIONCANCELED;
        }
 
        public OperationCanceledException(string? message)
            : base(message ?? SR.OperationCanceled)
        {
            HResult = HResults.COR_E_OPERATIONCANCELED;
        }
 
        public OperationCanceledException(string? message, Exception? innerException)
            : base(message ?? SR.OperationCanceled, innerException)
        {
            HResult = HResults.COR_E_OPERATIONCANCELED;
        }
 
 
        public OperationCanceledException(CancellationToken token)
            : this()
        {
            CancellationToken = token;
        }
 
        public OperationCanceledException(string? message, CancellationToken token)
            : this(message)
        {
            CancellationToken = token;
        }
 
        public OperationCanceledException(string? message, Exception? innerException, CancellationToken token)
            : this(message, innerException)
        {
            CancellationToken = token;
        }
 
        [Obsolete(Obsoletions.LegacyFormatterImplMessage, DiagnosticId = Obsoletions.LegacyFormatterImplDiagId, UrlFormat = Obsoletions.SharedUrlFormat)]
        [EditorBrowsable(EditorBrowsableState.Never)]
        protected OperationCanceledException(SerializationInfo info, StreamingContext context) : base(info, context)
        {
        }
    }
}