fix(remotecontrol): Ensure generators run after a referenced project …

…file update

src/Uno.UI.RemoteControl.Server.Processors/HotReload/ServerHotReloadProcessor.MetadataUpdate.cs

@@ -72,7 +72,12 @@ private void ObserveSolutionPaths(Solution solution)
 		{
 			var observedPaths =
 				solution.Projects
-					.SelectMany(p => p.Documents.Select(d => Path.GetDirectoryName(d.FilePath)))
+					.SelectMany(p => p
+						.Documents
+						.Select(d => d.FilePath)
+						.Concat(p.AdditionalDocuments
+							.Select(d => d.FilePath)))
+					.Select(p => Path.GetDirectoryName(p))
 					.Distinct()
 					.ToArray();
 
@@ -170,6 +175,16 @@ private async Task<bool> ProcessSolutionChanged(CancellationToken cancellationTo
 				var sourceText = await GetSourceTextAsync(file);
 				updatedSolution = _currentSolution.WithAdditionalDocumentText(additionalDocument.Id, sourceText, PreservationMode.PreserveValue);
 				updatedProjectId = additionalDocument.Project.Id;
+
+				// Generate an empty document to force the generators to run
+				// in a separate project of the same solution. This is not needed
+				// for the head project, but it's no causing issues either.
+				var docName = Guid.NewGuid().ToString();
+				updatedSolution = updatedSolution.AddAdditionalDocument(
+					DocumentId.CreateNewId(updatedProjectId),
+					docName,
+					SourceText.From("")
+				);
 			}
 			else
 			{
@@ -178,9 +193,10 @@ private async Task<bool> ProcessSolutionChanged(CancellationToken cancellationTo
 				return false;
 			}
 
+
 			var (updates, hotReloadDiagnostics) = await _hotReloadService.EmitSolutionUpdateAsync(updatedSolution, cancellationToken);
 
-			Console.WriteLine($"Got results after {sw.Elapsed}");
+			_reporter.Output($"Found {updates.Length} metadata updates after {sw.Elapsed}");
 
 			if (hotReloadDiagnostics.IsDefaultOrEmpty && updates.IsDefaultOrEmpty)
 			{
@@ -225,6 +241,10 @@ private async Task<bool> ProcessSolutionChanged(CancellationToken cancellationTo
 
 			async Task UpdateMetadata(string file, ImmutableArray<WatchHotReloadService.Update> updates)
 			{
+#if DEBUG
+				_reporter.Output($"Sending {updates.Length} metadata updates for {file}");
+#endif
+
 				for (int i = 0; i < updates.Length; i++)
 				{
 					var updateTypesWriterStream = new MemoryStream();