Fix small bug and add todo

src/Syntax/Typing/Binder.cs

@@ -7,13 +7,14 @@ using UnaryExpressionNode = Syntax.Parsing.Node.UnaryExpressionNode;
 
 namespace Syntax.Typing;
 
+// TODO: Currently anonymous function does not get a new scope
 public static class Binder
 {
     private static SyntaxTree _syntaxTree = null!;
     private static DefinitionTable _definitionTable = null!;
-    private static NubType? _funcReturnType = null;
 
     private static Dictionary<string, NubType> _variables = new();
+    private static NubType? _funcReturnType;
 
     public static BoundSyntaxTree Bind(SyntaxTree syntaxTree, DefinitionTable definitionTable)
     {
@@ -21,6 +22,7 @@ public static class Binder
         _definitionTable = definitionTable;
 
         _variables = [];
+        _funcReturnType = null;
 
         var definitions = new List<BoundDefinitionNode>();
 
@@ -50,7 +52,7 @@ public static class Binder
         {
             throw new NotImplementedException("Diagnostics not implemented");
         }
-        
+
         var structFields = new List<BoundStructField>();
 
         foreach (var structField in node.Fields)
@@ -64,7 +66,7 @@ public static class Binder
                 {
                     throw new NotImplementedException("Diagnostics not implemented");
                 }
-                
+
                 value = BindExpression(structField.Value.Value, definitionField.Type);
             }
 
@@ -269,7 +271,8 @@ public static class Binder
 
     private static BoundArrayInitializerNode BindArrayInitializer(ArrayInitializerNode expression)
     {
-        return new BoundArrayInitializerNode(expression.Tokens, new NubArrayType(expression.ElementType), BindExpression(expression.Capacity, NubPrimitiveType.U64), expression.ElementType);
+        return new BoundArrayInitializerNode(expression.Tokens, new NubArrayType(expression.ElementType), BindExpression(expression.Capacity, NubPrimitiveType.U64),
+            expression.ElementType);
     }
 
     private static BoundBinaryExpressionNode BindBinaryExpression(BinaryExpressionNode expression)
@@ -308,7 +311,7 @@ public static class Binder
             }
 
             var expectedType = funcType.Parameters[i];
-            
+
             parameters.Add(BindExpression(parameter, expectedType));
         }
 
@@ -403,7 +406,7 @@ public static class Binder
         {
             throw new NotImplementedException("Diagnostics not implemented");
         }
-        
+
         var initializers = new Dictionary<string, BoundExpressionNode>();
 
         foreach (var (member, initializer) in expression.Initializers)
@@ -413,7 +416,7 @@ public static class Binder
             {
                 throw new NotImplementedException("Diagnostics not implemented");
             }
-            
+
             initializers[member] = BindExpression(initializer, definitionField.Type);
         }