Move down and interface-ize component search engine, and introduce IProjectCollectionResolver (#10706)

Started this for #10688 but saw
that Go To Def used the same service, so figured @DustinCampbell would
need to do the same thing, and thought it would be easier to put it up
separately.

(Unless of course you've already done this, or similar, Dustin in which
case I can just abandon this, nbd)

Author: davidwengier

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/CodeActions/Razor/ComponentAccessibilityCodeActionProvider.cs

@@ -16,6 +16,7 @@
 using Microsoft.AspNetCore.Razor.PooledObjects;
 using Microsoft.AspNetCore.Razor.Utilities;
 using Microsoft.CodeAnalysis.Razor;
+using Microsoft.CodeAnalysis.Razor.Workspaces;
 using Microsoft.VisualStudio.Editor.Razor;
 using Microsoft.VisualStudio.LanguageServer.Protocol;
 
@@ -157,7 +158,7 @@ private static async Task AddComponentAccessFromTagAsync(RazorCodeActionContext
             {
                 // if fqn contains a generic typeparam, we should strip it out. Otherwise, replacing tag name will leave generic parameters in razor code, which are illegal
                 // e.g. <Component /> -> <Component<T> />
-                var fullyQualifiedName = DefaultRazorComponentSearchEngine.RemoveGenericContent(tagHelperPair.Short.Name.AsMemory()).ToString();
+                var fullyQualifiedName = RazorComponentSearchEngine.RemoveGenericContent(tagHelperPair.Short.Name.AsMemory()).ToString();
 
                 // If the match was case insensitive, then see if we can work out a new tag name to use as part of adding a using statement
                 TextDocumentEdit? additionalEdit = null;

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/Definition/DefinitionEndpoint.cs

@@ -29,14 +29,14 @@ namespace Microsoft.AspNetCore.Razor.LanguageServer.Definition;
 
 [RazorLanguageServerEndpoint(Methods.TextDocumentDefinitionName)]
 internal sealed class DefinitionEndpoint(
-    RazorComponentSearchEngine componentSearchEngine,
+    IRazorComponentSearchEngine componentSearchEngine,
     IRazorDocumentMappingService documentMappingService,
     LanguageServerFeatureOptions languageServerFeatureOptions,
     IClientConnection clientConnection,
     ILoggerFactory loggerFactory)
     : AbstractRazorDelegatingEndpoint<TextDocumentPositionParams, DefinitionResult?>(languageServerFeatureOptions, documentMappingService, clientConnection, loggerFactory.GetOrCreateLogger<DefinitionEndpoint>()), ICapabilitiesProvider
 {
-    private readonly RazorComponentSearchEngine _componentSearchEngine = componentSearchEngine ?? throw new ArgumentNullException(nameof(componentSearchEngine));
+    private readonly IRazorComponentSearchEngine _componentSearchEngine = componentSearchEngine ?? throw new ArgumentNullException(nameof(componentSearchEngine));
     private readonly IRazorDocumentMappingService _documentMappingService = documentMappingService ?? throw new ArgumentNullException(nameof(documentMappingService));
 
     protected override bool PreferCSharpOverHtmlIfPossible => true;
@@ -73,7 +73,7 @@ public void ApplyCapabilities(VSInternalServerCapabilities serverCapabilities, V
             return default;
         }
 
-        var originComponentDocumentSnapshot = await _componentSearchEngine.TryLocateComponentAsync(originTagDescriptor).ConfigureAwait(false);
+        var originComponentDocumentSnapshot = await _componentSearchEngine.TryLocateComponentAsync(documentContext.Snapshot, originTagDescriptor).ConfigureAwait(false);
         if (originComponentDocumentSnapshot is null)
         {
             Logger.LogInformation($"Origin TagHelper document snapshot is null.");

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/Extensions/IServiceCollectionExtensions.cs

@@ -226,6 +226,7 @@ public static void AddDocumentManagementServices(this IServiceCollection service
         // Add project snapshot manager
         services.AddSingleton<IProjectEngineFactoryProvider, LspProjectEngineFactoryProvider>();
         services.AddSingleton<IProjectSnapshotManager, LspProjectSnapshotManager>();
+        services.AddSingleton<IProjectCollectionResolver>(sp => (LspProjectSnapshotManager)sp.GetRequiredService<IProjectSnapshotManager>());
     }
 
     public static void AddHandlerWithCapabilities<T>(this IServiceCollection services)

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/ProjectSystem/LspProjectSnapshotManager.cs

@@ -9,16 +9,22 @@
 using Microsoft.AspNetCore.Razor.ProjectEngineHost;
 using Microsoft.CodeAnalysis.Razor.Logging;
 using Microsoft.CodeAnalysis.Razor.ProjectSystem;
+using Microsoft.CodeAnalysis.Razor.Workspaces;
 
 namespace Microsoft.AspNetCore.Razor.LanguageServer.ProjectSystem;
 
 internal class LspProjectSnapshotManager(
     IProjectEngineFactoryProvider projectEngineFactoryProvider,
     ILoggerFactory loggerFactory)
-    : ProjectSnapshotManager(projectEngineFactoryProvider, loggerFactory, initializer: AddMiscFilesProject)
+    : ProjectSnapshotManager(projectEngineFactoryProvider, loggerFactory, initializer: AddMiscFilesProject), IProjectCollectionResolver
 {
     private static void AddMiscFilesProject(Updater updater)
     {
         updater.ProjectAdded(MiscFilesHostProject.Instance);
     }
+
+    public IEnumerable<IProjectSnapshot> EnumerateProjects(IDocumentSnapshot snapshot)
+    {
+        return GetProjects();
+    }
 }

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/RazorLanguageServer.cs

@@ -20,15 +20,12 @@
 using Microsoft.AspNetCore.Razor.LanguageServer.LinkedEditingRange;
 using Microsoft.AspNetCore.Razor.LanguageServer.MapCode;
 using Microsoft.AspNetCore.Razor.LanguageServer.ProjectContexts;
-using Microsoft.AspNetCore.Razor.LanguageServer.ProjectSystem;
 using Microsoft.AspNetCore.Razor.LanguageServer.Refactoring;
 using Microsoft.AspNetCore.Razor.LanguageServer.SignatureHelp;
 using Microsoft.AspNetCore.Razor.LanguageServer.WrapWithTag;
 using Microsoft.AspNetCore.Razor.Telemetry;
-using Microsoft.CodeAnalysis.Razor;
 using Microsoft.CodeAnalysis.Razor.FoldingRanges;
 using Microsoft.CodeAnalysis.Razor.Logging;
-using Microsoft.CodeAnalysis.Razor.ProjectSystem;
 using Microsoft.CodeAnalysis.Razor.Workspaces;
 using Microsoft.CommonLanguageServerProtocol.Framework;
 using Microsoft.Extensions.DependencyInjection;
@@ -153,7 +150,7 @@ protected override ILspServices ConstructLspServices()
         }
 
         // Other
-        services.AddSingleton<RazorComponentSearchEngine, DefaultRazorComponentSearchEngine>();
+        services.AddSingleton<IRazorComponentSearchEngine, RazorComponentSearchEngine>();
 
         // Get the DefaultSession for telemetry. This is set by VS with
         // TelemetryService.SetDefaultSession and provides the correct

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/Refactoring/RenameEndpoint.cs

@@ -27,8 +27,8 @@ namespace Microsoft.AspNetCore.Razor.LanguageServer.Refactoring;
 
 [RazorLanguageServerEndpoint(Methods.TextDocumentRenameName)]
 internal sealed class RenameEndpoint(
-    RazorComponentSearchEngine componentSearchEngine,
-    IProjectSnapshotManager projectManager,
+    IRazorComponentSearchEngine componentSearchEngine,
+    IProjectCollectionResolver projectResolver,
     LanguageServerFeatureOptions languageServerFeatureOptions,
     IRazorDocumentMappingService documentMappingService,
     IClientConnection clientConnection,
@@ -39,8 +39,8 @@ internal sealed class RenameEndpoint(
         clientConnection,
         loggerFactory.GetOrCreateLogger<RenameEndpoint>()), ICapabilitiesProvider
 {
-    private readonly IProjectSnapshotManager _projectManager = projectManager;
-    private readonly RazorComponentSearchEngine _componentSearchEngine = componentSearchEngine;
+    private readonly IProjectCollectionResolver _projectResolver = projectResolver;
+    private readonly IRazorComponentSearchEngine _componentSearchEngine = componentSearchEngine;
     private readonly LanguageServerFeatureOptions _languageServerFeatureOptions = languageServerFeatureOptions;
     private readonly IRazorDocumentMappingService _documentMappingService = documentMappingService;
 
@@ -117,7 +117,7 @@ protected override bool IsSupported()
             return null;
         }
 
-        var originComponentDocumentSnapshot = await _componentSearchEngine.TryLocateComponentAsync(originTagHelpers.First()).ConfigureAwait(false);
+        var originComponentDocumentSnapshot = await _componentSearchEngine.TryLocateComponentAsync(documentContext.Snapshot, originTagHelpers.First()).ConfigureAwait(false);
         if (originComponentDocumentSnapshot is null)
         {
             return null;
@@ -162,7 +162,7 @@ protected override bool IsSupported()
         using var documentSnapshots = new PooledArrayBuilder<IDocumentSnapshot?>();
         using var _ = StringHashSetPool.GetPooledObject(out var documentPaths);
 
-        var projects = _projectManager.GetProjects();
+        var projects = _projectResolver.EnumerateProjects(skipDocumentContext.Snapshot);
 
         foreach (var project in projects)
         {

src/Razor/src/Microsoft.CodeAnalysis.Razor.Workspaces/IProjectCollectionResolver.cs

@@ -0,0 +1,12 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+using System.Collections.Generic;
+using Microsoft.CodeAnalysis.Razor.ProjectSystem;
+
+namespace Microsoft.CodeAnalysis.Razor.Workspaces;
+
+internal interface IProjectCollectionResolver
+{
+    IEnumerable<IProjectSnapshot> EnumerateProjects(IDocumentSnapshot snapshot);
+}

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/RazorComponentSearchEngine.cs renamed to src/Razor/src/Microsoft.CodeAnalysis.Razor.Workspaces/IRazorComponentSearchEngine.cs

@@ -5,9 +5,9 @@
 using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.CodeAnalysis.Razor.ProjectSystem;
 
-namespace Microsoft.AspNetCore.Razor.LanguageServer;
+namespace Microsoft.CodeAnalysis.Razor.Workspaces;
 
-internal abstract class RazorComponentSearchEngine
+internal interface IRazorComponentSearchEngine
 {
-    public abstract Task<IDocumentSnapshot?> TryLocateComponentAsync(TagHelperDescriptor tagHelper);
+    Task<IDocumentSnapshot?> TryLocateComponentAsync(IDocumentSnapshot contextSnapshot, TagHelperDescriptor tagHelper);
 }

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/DefaultRazorComponentSearchEngine.cs renamed to src/Razor/src/Microsoft.CodeAnalysis.Razor.Workspaces/RazorComponentSearchEngine.cs

@@ -7,15 +7,15 @@
 using Microsoft.CodeAnalysis.Razor.Logging;
 using Microsoft.CodeAnalysis.Razor.ProjectSystem;
 
-namespace Microsoft.AspNetCore.Razor.LanguageServer;
+namespace Microsoft.CodeAnalysis.Razor.Workspaces;
 
-internal class DefaultRazorComponentSearchEngine(
-    IProjectSnapshotManager projectManager,
+internal class RazorComponentSearchEngine(
+    IProjectCollectionResolver projectCollectionResolver,
     ILoggerFactory loggerFactory)
-    : RazorComponentSearchEngine
+    : IRazorComponentSearchEngine
 {
-    private readonly IProjectSnapshotManager _projectManager = projectManager;
-    private readonly ILogger _logger = loggerFactory.GetOrCreateLogger<DefaultRazorComponentSearchEngine>();
+    private readonly IProjectCollectionResolver _projectResolver = projectCollectionResolver;
+    private readonly ILogger _logger = loggerFactory.GetOrCreateLogger<RazorComponentSearchEngine>();
 
     /// <summary>Search for a component in a project based on its tag name and fully qualified name.</summary>
     /// <remarks>
@@ -24,10 +24,11 @@ internal class DefaultRazorComponentSearchEngine(
     /// component is present in has the same name as the assembly its corresponding tag helper is loaded from.
     /// Implicitly, this method inherits any assumptions made by TrySplitNamespaceAndType.
     /// </remarks>
+    /// <param name="contextSnapshot">A document snapshot that provides context to enumerate project snapshots</param>
     /// <param name="tagHelper">A TagHelperDescriptor to find the corresponding Razor component for.</param>
     /// <returns>The corresponding DocumentSnapshot if found, null otherwise.</returns>
     /// <exception cref="ArgumentNullException">Thrown if <paramref name="tagHelper"/> is null.</exception>
-    public override async Task<IDocumentSnapshot?> TryLocateComponentAsync(TagHelperDescriptor tagHelper)
+    public async Task<IDocumentSnapshot?> TryLocateComponentAsync(IDocumentSnapshot contextSnapshot, TagHelperDescriptor tagHelper)
     {
         if (tagHelper is null)
         {
@@ -44,7 +45,7 @@ internal class DefaultRazorComponentSearchEngine(
 
         var lookupSymbolName = RemoveGenericContent(typeName.AsMemory());
 
-        var projects = _projectManager.GetProjects();
+        var projects = _projectResolver.EnumerateProjects(contextSnapshot);
 
         foreach (var project in projects)
         {

src/Razor/src/Microsoft.CodeAnalysis.Remote.Razor/ProjectSystem/RemoteProjectCollectionResolver.cs

@@ -0,0 +1,27 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+using System.Collections.Generic;
+using System.Composition;
+using System.Diagnostics;
+using Microsoft.CodeAnalysis.Razor.ProjectSystem;
+using Microsoft.CodeAnalysis.Razor.Workspaces;
+
+namespace Microsoft.CodeAnalysis.Remote.Razor.ProjectSystem;
+
+[Export(typeof(IProjectCollectionResolver)), Shared]
+[method: ImportingConstructor]
+internal class RemoteProjectCollectionResolver(ProjectSnapshotFactory projectSnapshotFactory) : IProjectCollectionResolver
+{
+    public IEnumerable<IProjectSnapshot> EnumerateProjects(IDocumentSnapshot snapshot)
+    {
+        Debug.Assert(snapshot is RemoteDocumentSnapshot);
+
+        var projects = ((RemoteDocumentSnapshot)snapshot).TextDocument.Project.Solution.Projects;
+
+        foreach (var project in projects)
+        {
+            yield return projectSnapshotFactory.GetOrCreate(project);
+        }
+    }
+}