Add linting

Cauldron.Core/RoslynHost.cs

@@ -1,4 +1,6 @@
-using Microsoft.CodeAnalysis.CSharp.Scripting;
+using System.Collections.Immutable;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp.Scripting;
 using Microsoft.CodeAnalysis.Scripting;
 
 namespace Cauldron.Core;
@@ -13,8 +15,7 @@ public class RoslynHost
 	/// <param name="globals">Values that will be made available to the script</param>
 	/// <param name="cancellationToken"></param>
 	public static async Task RunScript(string code, string[] imports,
-		RoslynHostGlobals globals,
+		RoslynHostGlobals globals, CancellationToken cancellationToken = default)
-		CancellationToken cancellationToken = default)
 	{
 		ScriptOptions options = ScriptOptions.Default
 			.AddImports(imports);
@@ -22,6 +23,16 @@ public class RoslynHost
 		await CSharpScript.RunAsync(code, options, globals,
 			cancellationToken: cancellationToken);
 	}
+
+	public static ImmutableArray<Diagnostic> BuildScript(string code, string[] imports,
+		RoslynHostGlobals globals)
+	{
+		ScriptOptions options = ScriptOptions.Default
+			.AddImports(imports);
+
+		Script<object> script = CSharpScript.Create(code, options, globals.GetType());
+		return script.GetCompilation().GetDiagnostics();
+	}
 }
 
 public class RoslynHostGlobals

Cauldron.Macos/Main.storyboard

@@ -413,7 +413,7 @@
                 <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
                 <customObject id="Ady-hI-5gd" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="-23" y="-243"/>
+            <point key="canvasLocation" x="-23" y="-256"/>
         </scene>
         <!--Window Controller-->
         <scene sceneID="ktg-sd-7li">
@@ -421,11 +421,11 @@
                 <windowController id="JKR-xj-8kh" customClass="MainWindow" sceneMemberID="viewController">
                     <window key="window" title="Cauldron" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" frameAutosaveName="" animationBehavior="default" tabbingMode="preferred" id="d7K-Gm-g9N">
                         <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES" fullSizeContentView="YES"/>
-                        <rect key="contentRect" x="211" y="264" width="620" height="406"/>
+                        <rect key="contentRect" x="211" y="264" width="749" height="445"/>
                         <rect key="screenRect" x="0.0" y="0.0" width="1512" height="944"/>
                         <value key="minSize" type="size" width="480" height="270"/>
                         <view key="contentView" id="3If-Oy-0LB">
-                            <rect key="frame" x="0.0" y="0.0" width="620" height="406"/>
+                            <rect key="frame" x="0.0" y="0.0" width="749" height="445"/>
                             <autoresizingMask key="autoresizingMask"/>
                         </view>
                         <toolbar key="toolbar" implicitIdentifier="09D11707-F4A3-4FD5-970E-AC5832E91C2B" showsBaselineSeparator="NO" displayMode="iconOnly" sizeMode="regular" id="c7l-9K-zGH">
@@ -463,7 +463,7 @@
                 </windowController>
                 <customObject id="Dyo-ea-3jV" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="-24" y="70"/>
+            <point key="canvasLocation" x="-23" y="73"/>
         </scene>
         <!--Split View Controller-->
         <scene sceneID="BCF-ui-EPb">

Cauldron.Macos/MainWindow.cs

@@ -1,8 +1,13 @@
 using System;
+using System.Collections.Immutable;
+using System.Linq;
 using System.Threading;
+using System.Timers;
 using AppKit;
 using Cauldron.Macos.SourceWriter;
 using Cauldron.Macos.SourceWriter.LanguageFormats;
+using Foundation;
+using Microsoft.CodeAnalysis;
 
 namespace Cauldron.Macos;
 
@@ -61,6 +66,7 @@ public partial class MainWindow : NSWindowController
 		this.RunScriptToolbarButton.Activated += RunScript;
 
 		SourceTextView scriptTextBox = this.ScriptEditorTextBox;
+		scriptTextBox.OnFinishedTyping += this.BuildScript;
 		scriptTextBox.Font = NSFont.MonospacedSystemFont(new nfloat(14), NSFontWeight.Regular);
 		scriptTextBox.AutomaticQuoteSubstitutionEnabled = false;
 		scriptTextBox.AutomaticDashSubstitutionEnabled = false;
@@ -74,6 +80,11 @@ public partial class MainWindow : NSWindowController
 		scriptTextBox.Formatter.Reformat();
 	}
 
+	public void BuildScript(object sender, ElapsedEventArgs args)
+	{
+		ScriptRunner.BuildScript(this);
+	}
+
 	public void RunScript(object sender, EventArgs e)
 	{
 		ScriptRunner.RunScript(this);
@@ -94,6 +105,46 @@ public partial class MainWindow : NSWindowController
 		this.CreateNewTab();
 	}
 
+	public void UpdateScriptDiagnostics(ImmutableArray<Diagnostic> diagnostics)
+	{
+		Console.WriteLine(diagnostics.Select(d => $"{d.Severity}: {d.GetMessage()}").Join("\n"));
+
+		foreach (Diagnostic diagnostic in diagnostics)
+		{
+			int start = diagnostic.Location.SourceSpan.Start;
+			int end = diagnostic.Location.SourceSpan.End;
+
+			if (start == end && end < this.ScriptText.Length)
+				end += 1;
+			else if (start == end)
+				start -= 1;
+
+			NSRange range = new(start,end);
+
+			this.ScriptEditorTextBox.LayoutManager
+				.AddTemporaryAttribute(NSStringAttributeKey.UnderlineStyle,
+					new NSNumber((int)(NSUnderlineStyle.Thick | NSUnderlineStyle.PatternDot)),
+					range);
+			this.ScriptEditorTextBox.LayoutManager
+					.AddTemporaryAttribute(NSStringAttributeKey.ToolTip,
+						new NSString($"{diagnostic.Id} {diagnostic.GetMessage()}"),
+						range);
+
+			if (diagnostic.Severity == DiagnosticSeverity.Error)
+				this.ScriptEditorTextBox.LayoutManager
+					.AddTemporaryAttribute(NSStringAttributeKey.UnderlineColor, NSColor.SystemRed,
+						range);
+			else if (diagnostic.Severity == DiagnosticSeverity.Warning)
+				this.ScriptEditorTextBox.LayoutManager
+					.AddTemporaryAttribute(NSStringAttributeKey.UnderlineColor, NSColor.SystemGreen,
+						range);
+			else if (diagnostic.Severity == DiagnosticSeverity.Info)
+				this.ScriptEditorTextBox.LayoutManager
+					.AddTemporaryAttribute(NSStringAttributeKey.UnderlineColor, NSColor.SystemBlue,
+						range);
+		}
+	}
+
 	public void SetScriptRunState(bool scriptIsRunning)
 	{
 		if (scriptIsRunning)

Cauldron.Macos/ScriptRunner.cs

@@ -7,40 +7,39 @@ using Cauldron.Core;
 using System.Reflection;
 using System.Linq;
 using System.ComponentModel.DataAnnotations;
-using System.Collections;
 using System.IO;
 
 namespace Cauldron.Macos;
 
 public static class ScriptRunner
 {
+	public static void BuildScript(MainWindow window)
+	{
+		string script = "";
+		window.BeginInvokeOnMainThread(() => script = window.ScriptText);
+
+		TagBuilder body = new("body");
+
+		RoslynHostGlobals globals = new(null);
+		window.BeginInvokeOnMainThread(() => globals = new RoslynHostGlobals(CreateCauldronWriter(window, body)));
+
+		Task task = Task
+			.Run(() => RoslynHost.BuildScript(script, Array.Empty<string>(), globals))
+			.ContinueWith(t => window.BeginInvokeOnMainThread(
+				() => window.UpdateScriptDiagnostics(t.Result)));
+	}
+
 	public static void RunScript(MainWindow window)
 	{
 		window.SetScriptRunState(true);
 
 		TagBuilder body = new("body");
-
+		string script = window.ScriptText;
-		window.ScriptOutputWebView.SetOutputPanelContent(body);
+		window.ScriptCancellationTokenSource = new CancellationTokenSource();
 		TaskScheduler uiThread = TaskScheduler.FromCurrentSynchronizationContext();
 
-		CauldronWriter writer = new(obj =>
+		// Clear the output for the new run
-		{
-			window.BeginInvokeOnMainThread(() =>
-			{
-				TagBuilder outputSection = new("section");
-				outputSection.AddCssClass("output-section");
-				outputSection.InnerHtml.AppendHtml(GenerateValueOutput(obj));
-				body.InnerHtml.AppendHtml(outputSection);
-
 		window.ScriptOutputWebView.SetOutputPanelContent(body);
-			});
-
-			return Task.CompletedTask;
-		});
-
-		window.ScriptCancellationTokenSource = new CancellationTokenSource();
-
-		string script = window.ScriptText;
 
 		Task task = Task
 			.Run(async () =>
@@ -48,7 +47,7 @@ public static class ScriptRunner
 				try
 				{
 					await RoslynHost.RunScript(script, Array.Empty<string>(),
-						new RoslynHostGlobals(writer),
+						new RoslynHostGlobals(CreateCauldronWriter(window, body)),
 						window.ScriptCancellationTokenSource.Token);
 				}
 				catch (Exception ex)
@@ -66,6 +65,24 @@ public static class ScriptRunner
 			.ContinueWith((t) => window.SetScriptRunState(false), uiThread);
 	}
 
+	private static CauldronWriter CreateCauldronWriter(MainWindow window, TagBuilder body)
+	{
+		return new CauldronWriter (obj =>
+		{
+			window.BeginInvokeOnMainThread(() =>
+			{
+				TagBuilder outputSection = new("section");
+				outputSection.AddCssClass("output-section");
+				outputSection.InnerHtml.AppendHtml(GenerateValueOutput(obj));
+				body.InnerHtml.AppendHtml(outputSection);
+
+				window.ScriptOutputWebView.SetOutputPanelContent(body);
+			});
+
+			return Task.CompletedTask;
+		});
+	}
+
 	private static TagBuilder GenerateValueOutput(object value)
 	{
 		if (value is null)

Cauldron.Macos/SourceWriter/SourceTextView.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Timers;
 using AppKit;
 using CoreGraphics;
 using Foundation;
@@ -435,6 +436,17 @@ public class SourceTextView : NSTextView
 
 	#region Override Methods
 
+	private Timer InputTimoutTimer { get; set; }
+	/// <summary>
+	/// The amount of time with no user input after which <see cref="OnFinishedTyping"/> will be run
+	/// </summary>
+	public TimeSpan InputTimeoutInterval { get; set; } = new TimeSpan(0, 0, 1);
+	/// <summary>
+	/// An event triggered when the user has stopped typing for a period of time defined by
+	/// <see cref="InputTimeoutInterval"/>
+	/// </summary>
+	public event ElapsedEventHandler OnFinishedTyping;
+
 	/// <summary>
 	/// Look for special keys being pressed and does specific processing based on the key.
 	/// </summary>
@@ -570,7 +582,12 @@ public class SourceTextView : NSTextView
 
 		this.Formatter.Reformat();
 
-		//Console.WriteLine ("Key: {0}", (int)theEvent.Characters[0]);
+		this.InputTimoutTimer?.Stop();
+		this.InputTimoutTimer?.Close();
+		this.InputTimoutTimer = new Timer(this.InputTimeoutInterval);
+		this.InputTimoutTimer.AutoReset = false;
+		this.InputTimoutTimer.Elapsed += this.OnFinishedTyping;
+		this.InputTimoutTimer.Start();
 	}
 
 	/// <summary>