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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using Internal.TypeSystem;
using Internal.TypeSystem.Ecma;
namespace ILCompiler
{
/// <summary>
/// Represents a metadata blocking policy that doesn't block any metadata.
/// </summary>
public sealed class NoMetadataBlockingPolicy : MetadataBlockingPolicy
{
public override bool IsBlocked(MetadataType type) => !(type is EcmaType);
public override bool IsBlocked(FieldDesc field) => !(field is EcmaField);
private MetadataType _arrayOfTType;
private MetadataType InitializeArrayOfTType(TypeSystemEntity contextEntity)
{
_arrayOfTType = contextEntity.Context.SystemModule.GetType("System", "Array`1");
return _arrayOfTType;
}
private MetadataType GetArrayOfTType(TypeSystemEntity contextEntity)
{
if (_arrayOfTType != null)
{
return _arrayOfTType;
}
return InitializeArrayOfTType(contextEntity);
}
public override bool IsBlocked(MethodDesc method)
{
if (method is EcmaMethod ecmaMethod)
{
// Methods on Array`1<T> are implementation details that implement the generic interfaces on
// arrays. They should not generate metadata or be reflection invokable.
// We can get rid of this special casing if we make these methods stop being regular EcmaMethods
// with Array<T> as their owning type
if (ecmaMethod.OwningType == GetArrayOfTType(ecmaMethod))
return true;
return false;
}
return true;
}
}
}
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