﻿// 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.Immutable;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Text;

namespace Microsoft.CodeAnalysis.Snippets.SnippetProviders
{
    internal abstract class AbstractSingleChangeSnippetProvider : AbstractSnippetProvider
    {
        protected abstract Task<TextChange> GenerateSnippetTextChangeAsync(Document document, int position, CancellationToken cancellationToken);

        protected sealed override async Task<ImmutableArray<TextChange>> GenerateSnippetTextChangesAsync(Document document, int position, CancellationToken cancellationToken)
        {
            var change = await GenerateSnippetTextChangeAsync(document, position, cancellationToken).ConfigureAwait(false);
            return ImmutableArray.Create(change);
        }
    }
}
