src/VisualStudio/Core/Def/FindReferences/TableEntriesSnapshot.cs - main - githubmirror/roslyn

src/VisualStudio/Core/Def/FindReferences/TableEntriesSnapshot.cs

53 строки2 KB

Cyrus Najmabadi

Make sealed

26 мар 2025, 22:21

26 мар 2025, 22:21d99b771

// 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.Diagnostics.CodeAnalysis;
using System.Windows;
using Microsoft.VisualStudio.Shell.TableControl;
using Microsoft.VisualStudio.Shell.TableManager;

namespace Microsoft.VisualStudio.LanguageServices.FindUsages;

internal partial class StreamingFindUsagesPresenter
{
    // Name of the key used to retireve the whole entry object.
    internal const string SelfKeyName = "self";

    private sealed class TableEntriesSnapshot(ImmutableArray<Entry> entries, int versionNumber) : WpfTableEntriesSnapshotBase
    {
        private readonly int _versionNumber = versionNumber;
        private readonly ImmutableArray<Entry> _entries = entries;

        public override int VersionNumber => _versionNumber;

        public override int Count => _entries.Length;

        public override int IndexOf(int currentIndex, ITableEntriesSnapshot newSnapshot)
        {
            // We only add items to the end of our list, and we never reorder.
            // As such, any index in us will map to the same index in any newer snapshot.
            return currentIndex;
        }

        public override bool TryGetValue(int index, string keyName, out object? content)
        {
            // TableControlEventProcessor.PreprocessNavigate needs to get an entry 
            // to call TryNavigateTo on it.
            if (keyName == SelfKeyName)
            {
                content = _entries[index];
                return true;
            }

            return _entries[index].TryGetValue(keyName, out content);
        }

        public override bool TryCreateColumnContent(
            int index, string columnName, bool singleColumnView, [NotNullWhen(true)] out FrameworkElement? content)
        {
            return _entries[index].TryCreateColumnContent(columnName, out content);
        }
    }
}