// 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 Roslyn.Utilities;
 
namespace Microsoft.CodeAnalysis.SymbolSearch;
 
internal sealed class SymbolSearchUpdateNoOpEngine : ISymbolSearchUpdateEngine
{
    public static readonly SymbolSearchUpdateNoOpEngine Instance = new();
 
    public void Dispose()
    {
        // Nothing to do for the no-op version.
    }
 
    public ValueTask<ImmutableArray<PackageWithAssemblyResult>> FindPackagesWithAssemblyAsync(string source, string assemblyName, CancellationToken cancellationToken)
        => ValueTaskFactory.FromResult(ImmutableArray<PackageWithAssemblyResult>.Empty);
 
    public ValueTask<ImmutableArray<PackageWithTypeResult>> FindPackagesWithTypeAsync(string source, string name, int arity, CancellationToken cancellationToken)
        => ValueTaskFactory.FromResult(ImmutableArray<PackageWithTypeResult>.Empty);
 
    public ValueTask<ImmutableArray<ReferenceAssemblyWithTypeResult>> FindReferenceAssembliesWithTypeAsync(string name, int arity, CancellationToken cancellationToken)
        => ValueTaskFactory.FromResult(ImmutableArray<ReferenceAssemblyWithTypeResult>.Empty);
 
    public ValueTask UpdateContinuouslyAsync(string sourceName, string localSettingsDirectory, CancellationToken cancellationToken)
        => default;
}