Macro expander integrated in binder

Src/AST/Myc.Ast.Scope.pas

@@ -61,6 +61,9 @@ type
         property Symbols: TDictionary<string, Integer> read GetSymbols;
     end;
 
+    // A factory for creating visitors, primarily used by the debugger subsystem.
+    TEvaluatorFactory = reference to function(const Scope: IExecutionScope): IEvaluatorVisitor;
+
     TScope = record
         class function CreateScope(
             const Parent: IExecutionScope;