fix template text starting with '\' + code cleanup

Gobo/GmlFormatter.cs

@@ -5,10 +5,8 @@
 
 namespace Gobo;
 
-public struct FormatResult
+public class FormatResult
 {
-    public static readonly FormatResult Empty = new();
-
     public string Output;
 
     public string Ast = string.Empty;
@@ -23,7 +21,7 @@ public FormatResult(string output)
         Output = output;
     }
 
-    public override readonly string ToString()
+    public override string ToString()
     {
         var result = "";
 
@@ -64,7 +62,7 @@ public static FormatResult Format(string code, FormatOptions options)
             parseStart = Stopwatch.GetTimestamp();
         }
 
-        var parseResult = new GmlParser(code, options.TabWidth).Parse();
+        var parseResult = new GmlParser(code).Parse();
 
         new CommentMapper(code, parseResult.TriviaGroups).AttachComments(parseResult.Ast);
 
@@ -136,7 +134,7 @@ public static FormatResult Format(string code, FormatOptions options)
 
             try
             {
-                updatedParseResult = new GmlParser(output, options.TabWidth).Parse();
+                updatedParseResult = new GmlParser(output).Parse();
             }
             catch (GmlSyntaxErrorException ex)
             {
@@ -145,7 +143,7 @@ public static FormatResult Format(string code, FormatOptions options)
                 );
             }
 
-            var resultHash = updatedParseResult.Ast.GetHashCode();
+            int resultHash = updatedParseResult.Ast.GetHashCode();
 
             if (initialHash != resultHash)
             {

Gobo/Parser/GmlLexer.cs

@@ -19,16 +19,14 @@ internal enum LexerMode
     private int columnNumber;
     private int startIndex;
     private int index;
-    private readonly int tabWidth;
     private int character;
     private string CurrentToken => text[startIndex..index];
 
     private static readonly char[] whitespaces = { '\u000B', '\u000C', '\u0020', '\u00A0', '\t' };
 
-    public GmlLexer(string text, int tabWidth = 4)
+    public GmlLexer(string text)
     {
         this.text = text;
-        this.tabWidth = tabWidth;
         index = 0;
         lineNumber = 1;
     }
@@ -548,7 +546,12 @@ static bool IsTemplateStringCharacter(int c)
             return c != '"' && c != '{' && c != '\r' && c != '\n';
         }
 
-        while (IsTemplateStringCharacter(Peek()) && !HitEof)
+        if (character == '\\')
+        {
+            Advance();
+        }
+
+        while (!HitEof && IsTemplateStringCharacter(Peek()))
         {
             if (Peek() == '\\')
             {
@@ -634,7 +637,7 @@ private void Advance()
                 columnNumber = 0;
                 break;
             case '\t':
-                columnNumber += tabWidth;
+                columnNumber += 1;
                 break;
             default:
                 columnNumber += 1;

Gobo/Parser/GmlParser.cs

@@ -4,7 +4,7 @@
 
 namespace Gobo.Parser;
 
-internal struct GmlParseResult
+internal class GmlParseResult
 {
     public GmlSyntaxNode Ast;
     public List<Token[]> TriviaGroups;
@@ -112,9 +112,9 @@ internal class GmlParser
 
     private delegate bool BinaryExpressionRule(out GmlSyntaxNode node);
 
-    public GmlParser(string code, int tabWidth)
+    public GmlParser(string code)
     {
-        lexer = new GmlLexer(code, tabWidth);
+        lexer = new GmlLexer(code);
         token = lexer.NextToken();
         ProcessToken(token);
     }

Gobo/PrintContext.cs

@@ -1,17 +1,10 @@
-using Gobo.SyntaxNodes;
-
-namespace Gobo;
+namespace Gobo;
 
 internal class PrintContext
 {
     public FormatOptions Options { get; init; }
     public string SourceText { get; init; }
 
-    // TODO: consider removing stack from context (it's currently unused)
-    public Stack<GmlSyntaxNode> Stack = new();
-    public int PrintDepth => Stack.Count;
-    public string PrintedStack => $"[{string.Join(", ", Stack.Select(node => node.Kind))}]";
-
     public PrintContext(FormatOptions options, string sourceText)
     {
         Options = options;

Gobo/SyntaxNodes/GmlSyntaxNode.cs

@@ -53,8 +53,6 @@ public GmlSyntaxNode(TextSpan textSpan)
 
     public Doc Print(PrintContext ctx)
     {
-        ctx.Stack.Push(this);
-
         Doc printed;
 
         var hasComments = Comments.Count > 0;
@@ -88,8 +86,6 @@ public Doc Print(PrintContext ctx)
             printed = PrintWithOwnComments(ctx, printed);
         }
 
-        ctx.Stack.Pop();
-
         return printed;
     }
 
@@ -104,7 +100,6 @@ public List<Doc> PrintChildren(PrintContext ctx)
         return Children.Select(child => child.Print(ctx)).ToList();
     }
 
-    // TODO: Move comment logic?
     public virtual Doc PrintLeadingComments(
         PrintContext ctx,
         CommentType asType = CommentType.Leading