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43 lines
1.1 KiB
43 lines
1.1 KiB
// 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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// |
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// Nullable-annotation attribute polyfills from dotnet/runtime, for target frameworks |
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// that lack them. |
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#if !NETCORE |
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#nullable enable |
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namespace System.Diagnostics.CodeAnalysis |
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{ |
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Parameter | AttributeTargets.ReturnValue, AllowMultiple = true)] |
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internal sealed class NotNullIfNotNullAttribute : Attribute |
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{ |
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public string ParameterName { get; } |
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public NotNullIfNotNullAttribute(string parameterName) |
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{ |
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ParameterName = parameterName; |
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} |
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} |
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[AttributeUsage(AttributeTargets.Parameter, Inherited = false)] |
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internal sealed class NotNullWhenAttribute : Attribute |
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{ |
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public NotNullWhenAttribute(bool returnValue) |
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{ |
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ReturnValue = returnValue; |
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} |
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public bool ReturnValue { get; } |
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} |
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[AttributeUsage(AttributeTargets.Parameter, Inherited = false)] |
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internal sealed class DoesNotReturnIfAttribute : Attribute |
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{ |
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public DoesNotReturnIfAttribute(bool parameterValue) => ParameterValue = parameterValue; |
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public bool ParameterValue { get; } |
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} |
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} |
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#endif
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