Add TS external access API for ICommentSelectionService

src/Features/Core/Portable/ExternalAccess/VSTypeScript/Api/IVSTypeScriptCommentSlectionServiceImplementation.cs

@@ -0,0 +1,19 @@
+// 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 Microsoft.CodeAnalysis.Host;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Microsoft.CodeAnalysis.ExternalAccess.VSTypeScript.Api
+{
+    internal interface IVSTypeScriptCommentSelectionServiceImplementation : ILanguageService
+    {
+        Task<VSTypeScriptCommentSelectionInfo> GetInfoAsync(Document document, TextSpan textSpan, CancellationToken cancellationToken);
+
+        Task<Document> FormatAsync(Document document, ImmutableArray<TextSpan> changes, CancellationToken cancellationToken);
+    }
+}

src/Features/Core/Portable/ExternalAccess/VSTypeScript/Api/VSTypeScriptCommentSelectionInfo.cs

@@ -0,0 +1,32 @@
+// 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 Microsoft.CodeAnalysis.CommentSelection;
+
+namespace Microsoft.CodeAnalysis.ExternalAccess.VSTypeScript.Api
+{
+    internal readonly struct VSTypeScriptCommentSelectionInfo
+    {
+        internal readonly CommentSelectionInfo UnderlyingObject;
+
+        internal VSTypeScriptCommentSelectionInfo(CommentSelectionInfo underlyingObject)
+        {
+            UnderlyingObject = underlyingObject;
+        }
+
+        public VSTypeScriptCommentSelectionInfo(
+            bool supportsSingleLineComment,
+            bool supportsBlockComment,
+            string singleLineCommentString,
+            string blockCommentStartString,
+            string blockCommentEndString) : this(new(
+                supportsSingleLineComment,
+                supportsBlockComment,
+                singleLineCommentString,
+                blockCommentStartString,
+                blockCommentEndString))
+        {
+        }
+    }
+}

src/Features/Core/Portable/ExternalAccess/VSTypeScript/VSTypeScriptCommentSelectionService.cs

@@ -0,0 +1,37 @@
+// 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;
+using System.Collections.Immutable;
+using System.Composition;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.CommentSelection;
+using Microsoft.CodeAnalysis.ExternalAccess.VSTypeScript.Api;
+using Microsoft.CodeAnalysis.Formatting;
+using Microsoft.CodeAnalysis.Host.Mef;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Microsoft.CodeAnalysis.ExternalAccess.VSTypeScript
+{
+    [ExportLanguageService(typeof(ICommentSelectionService), InternalLanguageNames.TypeScript), Shared]
+    internal sealed class VSTypeScriptCommentSelectionService : ICommentSelectionService
+    {
+        private readonly IVSTypeScriptCommentSelectionServiceImplementation _impl;
+
+        [ImportingConstructor]
+        [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
+        public VSTypeScriptCommentSelectionService(IVSTypeScriptCommentSelectionServiceImplementation impl)
+            => _impl = impl;
+
+        public async Task<CommentSelectionInfo> GetInfoAsync(Document document, TextSpan textSpan, CancellationToken cancellationToken)
+        {
+            var info = await _impl.GetInfoAsync(document, textSpan, cancellationToken).ConfigureAwait(false);
+            return info.UnderlyingObject;
+        }
+
+        public Task<Document> FormatAsync(Document document, ImmutableArray<TextSpan> changes, SyntaxFormattingOptions formattingOptions, CancellationToken cancellationToken)
+            => _impl.FormatAsync(document, changes, cancellationToken);
+    }
+}