// 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 Microsoft.VisualStudio.Text.Operations;
 
namespace Microsoft.VisualStudio.LanguageServices.Implementation;
 
internal partial class GlobalUndoServiceFactory
{
    /// <summary>
    /// no op undo primitive
    /// </summary>
    private class NoOpUndoPrimitive : ITextUndoPrimitive
    {
        public ITextUndoTransaction Parent { get; set; }
 
        public bool CanRedo { get { return true; } }
        public bool CanUndo { get { return true; } }
 
        public void Do() { }
        public void Undo() { }
 
        public bool CanMerge(ITextUndoPrimitive older) => true;
        public ITextUndoPrimitive Merge(ITextUndoPrimitive older) => older;
    }
}