// 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;
using System.Collections.Generic;
using System.Globalization;
using Microsoft.CodeAnalysis;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation.SolutionExplorer
{
    internal abstract partial class BaseDiagnosticAndGeneratorItemSource
    {
        internal sealed class DiagnosticDescriptorComparer : IComparer<DiagnosticDescriptor>
        {
            public int Compare(DiagnosticDescriptor x, DiagnosticDescriptor y)
            {
                var comparison = StringComparer.CurrentCulture.Compare(x.Id, y.Id);
                if (comparison != 0)
                {
                    return comparison;
                }
 
                comparison = StringComparer.CurrentCulture.Compare(x.Title.ToString(CultureInfo.CurrentUICulture), y.Title.ToString(CultureInfo.CurrentUICulture));
                if (comparison != 0)
                {
                    return comparison;
                }
 
                comparison = StringComparer.CurrentCulture.Compare(x.MessageFormat.ToString(CultureInfo.CurrentUICulture), y.MessageFormat.ToString(CultureInfo.CurrentUICulture));
 
                return comparison;
            }
        }
    }
}