show analyzer diagnostics for file

src/SharpIDE.Application/Features/Analysis/RoslynAnalysis.cs

@@ -11,6 +11,7 @@ using Microsoft.CodeAnalysis.CodeFixes;
 using Microsoft.CodeAnalysis.CodeRefactorings;
 using Microsoft.CodeAnalysis.Completion;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Diagnostics;
 using Microsoft.CodeAnalysis.FindSymbols;
 using Microsoft.CodeAnalysis.Host.Mef;
 using Microsoft.CodeAnalysis.MSBuild;
@@ -340,7 +341,8 @@ public class RoslynAnalysis(ILogger<RoslynAnalysis> logger, BuildService buildSe
 		var compilation = await project.GetCompilationAsync(cancellationToken);
 		Guard.Against.Null(compilation, nameof(compilation));
 
-		var diagnostics = compilation.GetDiagnostics(cancellationToken)
+		var allDiagnostics = compilation.GetDiagnostics(cancellationToken);
+		var diagnostics = allDiagnostics
 			.Where(d => d.Severity is not DiagnosticSeverity.Hidden)
 			.Select(d =>
 			{
@@ -399,6 +401,38 @@ public class RoslynAnalysis(ILogger<RoslynAnalysis> logger, BuildService buildSe
 		return result;
 	}
 
+	public async Task<ImmutableArray<SharpIdeDiagnostic>> GetDocumentAnalyzerDiagnostics(SharpIdeFile fileModel, CancellationToken cancellationToken = default)
+	{
+		if (fileModel.IsRoslynWorkspaceFile is false) return [];
+		using var _ = SharpIdeOtel.Source.StartActivity($"{nameof(RoslynAnalysis)}.{nameof(GetDocumentDiagnostics)}");
+		await _solutionLoadedTcs.Task;
+		if (fileModel.IsRoslynWorkspaceFile is false) return [];
+
+		var document = await GetDocumentForSharpIdeFile(fileModel, cancellationToken);
+		Guard.Against.Null(document, nameof(document));
+
+		var semanticModel = await document.GetSemanticModelAsync(cancellationToken);
+		Guard.Against.Null(semanticModel, nameof(semanticModel));
+
+		var projectAnalyzers = document.Project.AnalyzerReferences
+			.OfType<IsolatedAnalyzerFileReference>()
+			.SelectMany(r => r.GetAnalyzers(document.Project.Language))
+			.ToImmutableArray();
+
+		var compilationWithAnalyzers = semanticModel.Compilation.WithAnalyzers(projectAnalyzers);
+
+		var diagnostics = await compilationWithAnalyzers.GetAnalyzerDiagnosticsAsync(cancellationToken: cancellationToken);
+		diagnostics = diagnostics.Where(d => d.Severity is not DiagnosticSeverity.Hidden).ToImmutableArray();
+		var result = diagnostics
+			.Select(d =>
+			{
+				var mappedFileLinePositionSpan = semanticModel.SyntaxTree.GetMappedLineSpan(d.Location.SourceSpan);
+				return new SharpIdeDiagnostic(mappedFileLinePositionSpan.Span, d, mappedFileLinePositionSpan.Path);
+			})
+			.ToImmutableArray();
+		return result;
+	}
+
 	private static async Task<Document> GetDocumentForSharpIdeFile(SharpIdeFile fileModel, CancellationToken cancellationToken = default)
 	{
 		var project = GetProjectForSharpIdeFile(fileModel);

src/SharpIDE.Godot/Features/CodeEditor/SharpIdeCodeEdit.cs

@@ -1,11 +1,8 @@
 using System.Collections.Immutable;
-using System.Collections.Specialized;
 using Godot;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CodeActions;
 using Microsoft.CodeAnalysis.Completion;
-using Microsoft.CodeAnalysis.Rename.ConflictEngine;
-using Microsoft.CodeAnalysis.Shared.Extensions;
 using Microsoft.CodeAnalysis.Tags;
 using Microsoft.CodeAnalysis.Text;
 using Microsoft.CodeAnalysis.Threading;
@@ -24,7 +21,6 @@ using SharpIDE.Application.Features.Run;
 using SharpIDE.Application.Features.SolutionDiscovery;
 using SharpIDE.Application.Features.SolutionDiscovery.VsPersistence;
 using SharpIDE.Godot.Features.Problems;
-using SharpIDE.Godot.Features.SymbolLookup;
 using Task = System.Threading.Tasks.Task;
 
 namespace SharpIDE.Godot.Features.CodeEditor;
@@ -47,6 +43,7 @@ public partial class SharpIdeCodeEdit : CodeEdit
 	private PopupMenu _popupMenu = null!;
 
 	private ImmutableArray<SharpIdeDiagnostic> _fileDiagnostics = [];
+	private ImmutableArray<SharpIdeDiagnostic> _fileAnalyzerDiagnostics = [];
 	private ImmutableArray<SharpIdeDiagnostic> _projectDiagnosticsForFile = [];
 	private ImmutableArray<CodeAction> _currentCodeActionsInPopup = [];
 	private bool _fileChangingSuppressBreakpointToggleEvent;
@@ -117,7 +114,12 @@ public partial class SharpIdeCodeEdit : CodeEdit
 			await this.InvokeAsync(async () => SetSyntaxHighlightingModel(await documentSyntaxHighlighting, await razorSyntaxHighlighting));
 			var documentDiagnostics = await documentDiagnosticsTask;
 			if (newCt.IsCancellationRequested) return;
+			var documentAnalyzerDiagnosticsTask = _roslynAnalysis.GetDocumentAnalyzerDiagnostics(_currentFile, newCt);
 			await this.InvokeAsync(() => SetDiagnostics(documentDiagnostics));
+			var documentAnalyzerDiagnostics = await documentAnalyzerDiagnosticsTask;
+			if (newCt.IsCancellationRequested) return;
+			await this.InvokeAsync(() => SetAnalyzerDiagnostics(documentAnalyzerDiagnostics));
+			if (newCt.IsCancellationRequested) return;
 			if (await hasFocus)
 			{
 				await _roslynAnalysis.UpdateProjectDiagnosticsForFile(_currentFile, newCt);
@@ -289,6 +291,7 @@ public partial class SharpIdeCodeEdit : CodeEdit
 		var syntaxHighlighting = _roslynAnalysis.GetDocumentSyntaxHighlighting(_currentFile);
 		var razorSyntaxHighlighting = _roslynAnalysis.GetRazorDocumentSyntaxHighlighting(_currentFile);
 		var diagnostics = _roslynAnalysis.GetDocumentDiagnostics(_currentFile);
+		var analyzerDiagnostics = _roslynAnalysis.GetDocumentAnalyzerDiagnostics(_currentFile);
 		await readFileTask;
 		var setTextTask = this.InvokeAsync(async () =>
 		{
@@ -304,6 +307,8 @@ public partial class SharpIdeCodeEdit : CodeEdit
 			await this.InvokeAsync(async () => SetSyntaxHighlightingModel(await syntaxHighlighting, await razorSyntaxHighlighting));
 			await diagnostics;
 			await this.InvokeAsync(async () => SetDiagnostics(await diagnostics));
+			await analyzerDiagnostics;
+			await this.InvokeAsync(async () => SetAnalyzerDiagnostics(await analyzerDiagnostics));
 		});
 	}
 
@@ -350,7 +355,7 @@ public partial class SharpIdeCodeEdit : CodeEdit
 	public override void _Draw()
 	{
 		//UnderlineRange(_currentLine, _selectionStartCol, _selectionEndCol, new Color(1, 0, 0));
-		foreach (var sharpIdeDiagnostic in _fileDiagnostics.ConcatFast(_projectDiagnosticsForFile))
+		foreach (var sharpIdeDiagnostic in _fileDiagnostics.Concat(_fileAnalyzerDiagnostics).ConcatFast(_projectDiagnosticsForFile))
 		{
 			var line = sharpIdeDiagnostic.Span.Start.Line;
 			var startCol = sharpIdeDiagnostic.Span.Start.Character;
@@ -476,6 +481,13 @@ public partial class SharpIdeCodeEdit : CodeEdit
 		QueueRedraw();
 	}
 	
+	[RequiresGodotUiThread]
+	private void SetAnalyzerDiagnostics(ImmutableArray<SharpIdeDiagnostic> diagnostics)
+	{
+		_fileAnalyzerDiagnostics = diagnostics;
+		QueueRedraw();
+	}
+	
 	[RequiresGodotUiThread]
 	private void SetProjectDiagnostics(ImmutableArray<SharpIdeDiagnostic> diagnostics)
 	{