Work on create component

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

@@ -147,6 +147,7 @@ namespace Microsoft.AspNetCore.Razor.LanguageServer
 
                         // Refactoring
                         services.AddSingleton<RazorCodeActionProvider, ExtractToCodeBehindCodeActionProvider>();
+                        services.AddSingleton<RazorCodeActionProvider, CreateComponentFromTagCodeActionProvider>();
                         services.AddSingleton<RazorCodeActionResolver, ExtractToCodeBehindCodeActionResolver>();
                     }));
 

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

@@ -0,0 +1,53 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Razor.Language;
+using Microsoft.AspNetCore.Razor.Language.Syntax;
+using Microsoft.Extensions.Logging;
+using Microsoft.VisualStudio.Editor.Razor;
+using OmniSharp.Extensions.LanguageServer.Protocol.Models;
+
+namespace Microsoft.AspNetCore.Razor.LanguageServer.Refactoring
+{
+    class CreateComponentFromTagCodeActionProvider : RazorCodeActionProvider
+    {
+        private readonly HtmlFactsService _htmlFactsService;
+        private readonly ILogger _logger;
+
+        public CreateComponentFromTagCodeActionProvider(
+            HtmlFactsService htmlFactsService,
+            ILoggerFactory loggerFactory)
+        {
+            if (htmlFactsService is null)
+            {
+                throw new ArgumentNullException(nameof(loggerFactory));
+            }
+
+            if (loggerFactory is null)
+            {
+                throw new ArgumentNullException(nameof(loggerFactory));
+            }
+
+            _htmlFactsService = htmlFactsService;
+            _logger = loggerFactory.CreateLogger<ExtractToCodeBehindCodeActionProvider>();
+        }
+
+        override public Task<CommandOrCodeActionContainer> ProvideAsync(RazorCodeActionContext context, CancellationToken cancellationToken)
+        {
+            var startTagNode = (MarkupStartTagSyntax)context.Document.GetNodeAtLocation(context.Location, n => n.Kind == SyntaxKind.MarkupStartTag);
+            foreach (var diagnostic in context.Document.GetCSharpDocument().Diagnostics)
+            {
+                if (diagnostic.Span.AbsoluteIndex <= context.Location.AbsoluteIndex && context.Location.AbsoluteIndex <= diagnostic.Span.AbsoluteIndex + diagnostic.Span.Length)
+                {
+                    if (diagnostic.Id == "RZ10012")
+                    {
+                        // startTagNode.Name.Content
+
+                    }
+                }
+            }
+
+            return null;
+        }
+    }
+}