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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.Reflection.Metadata;
namespace Microsoft.CodeAnalysis.CSharp.Symbols.Metadata.PE;
internal static class PEUtilities
{
internal static DiagnosticInfo? DeriveCompilerFeatureRequiredAttributeDiagnostic(Symbol symbol, PEModuleSymbol module, EntityHandle handle, CompilerFeatureRequiredFeatures allowedFeatures, MetadataDecoder decoder)
{
string? disallowedFeature = module.Module.GetFirstUnsupportedCompilerFeatureFromToken(handle, decoder, allowedFeatures);
return disallowedFeature != null
? // '{0}' requires compiler feature '{1}', which is not supported by this version of the C# compiler.
new CSDiagnosticInfo(ErrorCode.ERR_UnsupportedCompilerFeature, symbol, disallowedFeature)
: null;
}
}
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