Implement Find Symbol References API for VsDebugPresentationPackage

Roslyn.sln

@@ -410,6 +410,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.CodeAnalysis.Exte
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Net.Compilers.Toolset.Package", "src\NuGet\Microsoft.Net.Compilers.Toolset\Microsoft.Net.Compilers.Toolset.Package.csproj", "{A74C7D2E-92FA-490A-B80A-28BEF56B56FC}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage", "src\Tools\ExternalAccess\VsDebugPresentationPackage\Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage.csproj", "{655A5B07-39B8-48CD-8590-8AC0C2B708D8}"
+EndProject
 Global
 	GlobalSection(SharedMSBuildProjectFiles) = preSolution
 		src\Compilers\VisualBasic\BasicAnalyzerDriver\BasicAnalyzerDriver.projitems*{2523d0e6-df32-4a3e-8ae0-a19bffae2ef6}*SharedItemsImports = 4
@@ -1079,6 +1081,10 @@ Global
 		{A74C7D2E-92FA-490A-B80A-28BEF56B56FC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A74C7D2E-92FA-490A-B80A-28BEF56B56FC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A74C7D2E-92FA-490A-B80A-28BEF56B56FC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{655A5B07-39B8-48CD-8590-8AC0C2B708D8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{655A5B07-39B8-48CD-8590-8AC0C2B708D8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{655A5B07-39B8-48CD-8590-8AC0C2B708D8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{655A5B07-39B8-48CD-8590-8AC0C2B708D8}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -1271,6 +1277,7 @@ Global
 		{2FB6C157-DF91-4B1C-9827-A4D1C08C73EC} = {8977A560-45C2-4EC2-A849-97335B382C74}
 		{1638FB04-0298-4341-B5E0-8A13B4823C81} = {8977A560-45C2-4EC2-A849-97335B382C74}
 		{A74C7D2E-92FA-490A-B80A-28BEF56B56FC} = {C52D8057-43AF-40E6-A01B-6CDBB7301985}
+		{655A5B07-39B8-48CD-8590-8AC0C2B708D8} = {8977A560-45C2-4EC2-A849-97335B382C74}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {604E6B91-7BC0-4126-AE07-D4D2FEFC3D29}

src/EditorFeatures/Core/Microsoft.CodeAnalysis.EditorFeatures.csproj

@@ -38,6 +38,7 @@
     <InternalsVisibleTo Include="InteractiveHost" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.CSharp.EditorFeatures" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.EditorFeatures.Wpf" />
+    <InternalsVisibleTo Include="Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.VisualBasic.EditorFeatures" />
     <InternalsVisibleTo Include="Microsoft.VisualStudio.LanguageServices" />
     <InternalsVisibleTo Include="Microsoft.VisualStudio.LanguageServices.CSharp" />

src/Tools/ExternalAccess/VsDebugPresentationPackage/DebuggerFindReferencesService.cs

+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.Composition;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.Editor;
+using Microsoft.CodeAnalysis.Editor.FindUsages;
+using Microsoft.CodeAnalysis.Editor.Host;
+using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
+using Microsoft.CodeAnalysis.Host.Mef;
+
+namespace Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage
+{
+    [Export]
+    [Shared]
+    internal sealed class DebuggerFindReferencesService
+    {
+        private readonly IThreadingContext _threadingContext;
+        private readonly IEnumerable<Lazy<IStreamingFindUsagesPresenter>> _streamingPresenters;
+
+        [ImportingConstructor]
+        [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
+        public DebuggerFindReferencesService(
+            IThreadingContext threadingContext,
+            [ImportMany] IEnumerable<Lazy<IStreamingFindUsagesPresenter>> streamingPresenters)
+        {
+            _threadingContext = threadingContext;
+            _streamingPresenters = streamingPresenters;
+        }
+
+        public async Task FindSymbolReferencesAsync(ISymbol symbol, Project project, CancellationToken cancellationToken)
+        {
+            var streamingPresenter = GetStreamingPresenter();
+
+            // Let the presenter know we're starting a search.  It will give us back
+            // the context object that the FAR service will push results into.
+            var context = streamingPresenter.StartSearch(EditorFeaturesResources.Find_References, supportsReferences: true);
+
+            await AbstractFindUsagesService.FindSymbolReferencesAsync(_threadingContext, context, symbol, project, cancellationToken).ConfigureAwait(false);
+
+            // Note: we don't need to put this in a finally.  The only time we might not hit
+            // this is if cancellation or another error gets thrown.  In the former case,
+            // that means that a new search has started.  We don't care about telling the
+            // context it has completed.  In the latter case something wrong has happened
+            // and we don't want to run any more code in this particular context.
+            await context.OnCompletedAsync().ConfigureAwait(false);
+        }
+
+        private IStreamingFindUsagesPresenter GetStreamingPresenter()
+        {
+            try
+            {
+                return _streamingPresenters.FirstOrDefault()?.Value;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+    }
+}

src/Tools/ExternalAccess/VsDebugPresentationPackage/Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage.csproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Library</OutputType>
+    <RootNamespace>Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage</RootNamespace>
+    <TargetFramework>net472</TargetFramework>
+
+    <!-- NuGet -->
+    <IsPackable>true</IsPackable>
+    <PackageId>Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage</PackageId>
+    <PackageDescription>
+      A supporting package for VsDebugPresentationPackage:
+      [needs link]
+    </PackageDescription>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <!--
+      ⚠ ONLY VSDEBUGPRESENTATIONPACKAGE ASSEMBLIES MAY BE ADDED HERE ⚠
+    -->
+    <InternalsVisibleTo Include="Microsoft.VisualStudio.Debugger.VsDebugPresentationPackage" Key="$(VsDebugPresentationPackageKey)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Compilers\Core\Portable\Microsoft.CodeAnalysis.csproj" />
+    <ProjectReference Include="..\..\..\EditorFeatures\Core\Microsoft.CodeAnalysis.EditorFeatures.csproj" />
+    <ProjectReference Include="..\..\..\Workspaces\Core\Portable\Microsoft.CodeAnalysis.Workspaces.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PublicAPI Include="PublicAPI.Shipped.txt" />
+    <PublicAPI Include="PublicAPI.Unshipped.txt" />
+  </ItemGroup>
+
+</Project>
\ No newline at end of file

src/VisualStudio/Setup/AssemblyRedirects.cs

@@ -30,6 +30,7 @@
 [assembly: ProvideRoslynBindingRedirection("Microsoft.CodeAnalysis.ExternalAccess.FSharp.dll")]
 [assembly: ProvideRoslynBindingRedirection("Microsoft.CodeAnalysis.ExternalAccess.Razor.dll")]
 [assembly: ProvideRoslynBindingRedirection("Microsoft.CodeAnalysis.ExternalAccess.TypeScript.dll")]
+[assembly: ProvideRoslynBindingRedirection("Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage.dll")]
 
 [assembly: ProvideRoslynBindingRedirection("Microsoft.CodeAnalysis.Elfie.dll")]
 

src/VisualStudio/Setup/Roslyn.VisualStudio.Setup.csproj

@@ -49,6 +49,11 @@
       <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
       <ForceIncludeInVSIX>true</ForceIncludeInVSIX>
     </ProjectReference>
+    <ProjectReference Include="..\..\Tools\ExternalAccess\VsDebugPresentationPackage\Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage.csproj">
+      <Name>Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage</Name>
+      <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup</IncludeOutputGroupsInVSIX>
+      <ForceIncludeInVSIX>true</ForceIncludeInVSIX>
+    </ProjectReference>
     <ProjectReference Include="..\..\Workspaces\Core\Desktop\Microsoft.CodeAnalysis.Workspaces.Desktop.csproj">
       <Name>Workspaces.Desktop</Name>
       <IncludeOutputGroupsInVSIX>BuiltProjectOutputGroup;SatelliteDllsProjectOutputGroup</IncludeOutputGroupsInVSIX>

src/VisualStudio/Setup/source.extension.vsixmanifest

@@ -56,6 +56,7 @@
     <Asset Type="Microsoft.VisualStudio.Analyzer" Path="Microsoft.CodeAnalysis.VisualBasic.Features.dll" />
     <Asset Type="Microsoft.VisualStudio.Analyzer" Path="Microsoft.CodeAnalysis.VisualBasic.EditorFeatures.dll" />
     <Asset Type="Microsoft.VisualStudio.Analyzer" d:Source="Project" d:ProjectName="XamlVisualStudio" Path="|XamlVisualStudio|" />
+    <Asset Type="Microsoft.VisualStudio.MefComponent" Path="Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage.dll" />
   </Assets>
   <Prerequisites>
     <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,17.0)" DisplayName="Visual Studio core editor" />

src/Workspaces/Core/Portable/Microsoft.CodeAnalysis.Workspaces.csproj

@@ -232,6 +232,7 @@
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.EditorFeatures" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.EditorFeatures.Text" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.EditorFeatures.Wpf" />
+    <InternalsVisibleTo Include="Microsoft.CodeAnalysis.ExternalAccess.VsDebugPresentationPackage" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.Features" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.InteractiveEditorFeatures" />
     <InternalsVisibleTo Include="Microsoft.CodeAnalysis.InteractiveFeatures" />