66 lines
2.3 KiB
C#
66 lines
2.3 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using System.Runtime.Serialization;
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namespace System.Runtime.CompilerServices
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{
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// MONO: this file was copied from CoreFX master for NS2.1
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/// <summary>
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/// Indicates that a switch expression that was non-exhaustive failed to match its input
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/// at runtime, e.g. in the C# 8 expression <code>3 switch { 4 => 5 }</code>.
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/// The exception optionally contains an object representing the unmatched value.
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/// </summary>
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[Serializable]
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public sealed class SwitchExpressionException : InvalidOperationException
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{
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public SwitchExpressionException()
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: base(SR.Arg_SwitchExpressionException) { }
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public SwitchExpressionException(Exception innerException) :
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base(SR.Arg_SwitchExpressionException, innerException) { }
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public SwitchExpressionException(object unmatchedValue) : this()
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{
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UnmatchedValue = unmatchedValue;
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}
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private SwitchExpressionException(SerializationInfo info, StreamingContext context)
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: base(info, context)
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{
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UnmatchedValue = info.GetValue(nameof(UnmatchedValue), typeof(object));
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}
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public SwitchExpressionException(string message) : base(message) { }
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public SwitchExpressionException(string message, Exception innerException)
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: base(message, innerException) { }
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public object UnmatchedValue { get; }
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public override void GetObjectData(SerializationInfo info, StreamingContext context)
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{
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base.GetObjectData(info, context);
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info.AddValue(nameof(UnmatchedValue), UnmatchedValue, typeof(object));
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}
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public override string Message
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{
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get
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{
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#if __MonoCS__
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if (UnmatchedValue == null)
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#else
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if (UnmatchedValue is null)
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#endif
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{
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return base.Message;
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}
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string valueMessage = SR.Format(SR.SwitchExpressionException_UnmatchedValue, UnmatchedValue.ToString());
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return base.Message + Environment.NewLine + valueMessage;
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}
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}
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}
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} |