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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 System.Collections.Concurrent;
using System.Diagnostics;
using Microsoft.CodeAnalysis;
namespace Microsoft.ML.InternalCodeAnalyzer
{
internal static class INamedTypeSymbolExtensions
{
public static bool IsTestAttribute(this INamedTypeSymbol attributeClass, ConcurrentDictionary<INamedTypeSymbol, bool> knownTestAttributes, INamedTypeSymbol factAttribute)
{
if (knownTestAttributes.TryGetValue(attributeClass, out var isTest))
return isTest;
return knownTestAttributes.GetOrAdd(attributeClass, ExtendsFactAttribute(attributeClass, factAttribute));
}
private static bool ExtendsFactAttribute(INamedTypeSymbol namedType, INamedTypeSymbol factAttribute)
{
Debug.Assert(factAttribute is object);
for (var current = namedType; current is object; current = current.BaseType)
{
if (Equals(current, factAttribute))
return true;
}
return false;
}
}
}
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