File: Shared\Extensions\INamespaceSymbolExtensions.Comparer.cs
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Project: src\src\Workspaces\Core\Portable\Microsoft.CodeAnalysis.Workspaces.csproj (Microsoft.CodeAnalysis.Workspaces)
// 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.Generic;
using System.Linq;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.Shared.Extensions;
 
internal static partial class INamespaceSymbolExtensions
{
    private sealed class Comparer : IEqualityComparer<INamespaceSymbol?>
    {
        public bool Equals(INamespaceSymbol? x, INamespaceSymbol? y)
            => GetNameParts(x).SequenceEqual(GetNameParts(y));
 
        public int GetHashCode(INamespaceSymbol? obj)
            => GetNameParts(obj).Aggregate(0, (a, v) => Hash.Combine(v, a));
    }
}