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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System.Diagnostics;
using ILLink.Shared.DataFlow;
using ILLink.Shared.TypeSystemProxy;
// This is needed due to NativeAOT which doesn't enable nullable globally yet
#nullable enable
namespace ILLink.Shared.TrimAnalysis
{
/// <summary>
/// This represents a type handle of a Nullable<T> where T is an unknown value with DynamicallyAccessedMembers annotations.
/// It is necessary to track the underlying type to ensure DynamicallyAccessedMembers annotations on the underlying type match the target parameters where the Nullable is used.
/// </summary>
internal sealed record RuntimeTypeHandleForNullableValueWithDynamicallyAccessedMembers : SingleValue
{
public RuntimeTypeHandleForNullableValueWithDynamicallyAccessedMembers (in TypeProxy nullableType, in SingleValue underlyingTypeValue)
{
Debug.Assert (nullableType.IsTypeOf (WellKnownType.System_Nullable_T));
NullableType = nullableType;
UnderlyingTypeValue = underlyingTypeValue;
}
public readonly TypeProxy NullableType;
public readonly SingleValue UnderlyingTypeValue;
public override SingleValue DeepCopy () => this; // This value is immutable
public override string ToString () => this.ValueToString (UnderlyingTypeValue, NullableType);
}
}
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