// 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;
 
namespace Microsoft.CodeAnalysis.FindSymbols;
 
internal sealed partial class FindReferencesSearchEngine
{
    /// <summary>
    /// A symbol set used when the find refs caller does not want cascading.  This is a trivial impl that basically
    /// just wraps the initial symbol provided and doesn't need to do anything beyond that.
    /// </summary>
    private sealed class NonCascadingSymbolSet(FindReferencesSearchEngine engine, MetadataUnifyingSymbolHashSet searchSymbols) : SymbolSet(engine)
    {
        private readonly ImmutableArray<ISymbol> _symbols = [.. searchSymbols];
 
        public override ImmutableArray<ISymbol> GetAllSymbols()
            => _symbols;
 
        public override Task InheritanceCascadeAsync(Project project, CancellationToken cancellationToken)
        {
            // Nothing to do here.  We're in a non-cascading scenario, so even as we encounter a new project we
            // don't have to figure out what new symbols may be found.
            return Task.CompletedTask;
        }
    }
}