// 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.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.FindSymbols;
using Microsoft.CodeAnalysis.Options;
using Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.Shared.Extensions;
 
internal static partial class DocumentExtensions
{
    public static async ValueTask<SyntaxTreeIndex> GetSyntaxTreeIndexAsync(this Document document, CancellationToken cancellationToken)
    {
        var result = await SyntaxTreeIndex.GetIndexAsync(document, loadOnly: false, cancellationToken).ConfigureAwait(false);
        Contract.ThrowIfNull(result);
        return result;
    }
 
    public static ValueTask<SyntaxTreeIndex?> GetSyntaxTreeIndexAsync(this Document document, bool loadOnly, CancellationToken cancellationToken)
        => SyntaxTreeIndex.GetIndexAsync(document, loadOnly, cancellationToken);
 
    internal static Document WithSolutionOptions(this Document document, OptionSet options)
        => document.Project.Solution.WithOptions(options).GetRequiredDocument(document.Id);
}