// 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 Microsoft.CodeAnalysis;
using Microsoft.VisualStudio.OLE.Interop;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation.ProjectSystem
{
    internal partial class VisualStudioWorkspaceImpl
    {
        private abstract class AbstractAddRemoveUndoUnit : IOleUndoUnit
        {
            protected readonly ProjectId FromProjectId;
            protected readonly VisualStudioWorkspaceImpl Workspace;
 
            protected AbstractAddRemoveUndoUnit(
                VisualStudioWorkspaceImpl workspace,
                ProjectId fromProjectId)
            {
                Workspace = workspace;
                FromProjectId = fromProjectId;
            }
 
            public abstract void Do(IOleUndoManager pUndoManager);
            public abstract void GetDescription(out string pBstr);
 
            public void GetUnitType(out Guid pClsid, out int plID)
                => throw new NotImplementedException();
 
            public void OnNextAdd()
            {
            }
        }
    }
}