// 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 Microsoft.CodeAnalysis.Shared.Extensions;
 
namespace Microsoft.CodeAnalysis.Shared.Utilities;
 
internal readonly struct DeserializationConstructorCheck(Compilation compilation)
{
    private readonly INamedTypeSymbol? _iSerializableType = compilation.ISerializableType();
    private readonly INamedTypeSymbol? _serializationInfoType = compilation.SerializationInfoType();
    private readonly INamedTypeSymbol? _streamingContextType = compilation.StreamingContextType();
 
    // True if the method is a constructor adhering to the pattern used for custom
    // deserialization by types that implement System.Runtime.Serialization.ISerializable
    public bool IsDeserializationConstructor(IMethodSymbol methodSymbol)
        => _iSerializableType != null &&
           methodSymbol.MethodKind == MethodKind.Constructor &&
           methodSymbol.Parameters.Length == 2 &&
           methodSymbol.Parameters[0].Type.Equals(_serializationInfoType) &&
           methodSymbol.Parameters[1].Type.Equals(_streamingContextType) &&
           methodSymbol.ContainingType.AllInterfaces.Contains(_iSerializableType);
}