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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.
#nullable disable
using System;
using System.Collections.Generic;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.CodeLens;
internal sealed class LocationComparer : IEqualityComparer<Location>
{
public static LocationComparer Instance { get; } = new LocationComparer();
public bool Equals(Location x, Location y)
{
if (x != null && x.IsInSource && y != null && y.IsInSource)
{
return x.SourceSpan.Equals(y.SourceSpan) &&
x.SourceTree.FilePath.Equals(y.SourceTree.FilePath, StringComparison.OrdinalIgnoreCase);
}
return object.Equals(x, y);
}
public int GetHashCode(Location obj)
{
if (obj != null && obj.IsInSource)
{
return Hash.Combine(obj.SourceSpan.GetHashCode(),
StringComparer.OrdinalIgnoreCase.GetHashCode(obj.SourceTree.FilePath));
}
return obj?.GetHashCode() ?? 0;
}
}
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