// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Collections.Generic;
using Microsoft.CodeAnalysis;
 
namespace Microsoft.AspNetCore.Http.ValidationsGenerator;
 
internal sealed class ValidatableTypeComparer : IEqualityComparer<ValidatableType?>
{
    public static ValidatableTypeComparer Instance { get; } = new();
 
    public bool Equals(ValidatableType? x, ValidatableType? y)
    {
        if (x is null && y is null)
        {
            return true;
        }
        if (x is null || y is null)
        {
            return false;
        }
        return SymbolEqualityComparer.Default.Equals(x.Type, y.Type);
    }
 
    public int GetHashCode(ValidatableType? obj)
    {
        return SymbolEqualityComparer.Default.GetHashCode(obj?.Type);
    }
}