public void VisitVarStmt(VarStmt stmt)
 {
     Declare(stmt.Name);
     if (stmt.Initializer != null)
     {
         Resolve(stmt.Initializer);
     }
     Define(stmt.Name);
 }
        public void VisitVarStmt(VarStmt stmt)
        {
            object value = null;

            if (stmt.Initializer != null)
            {
                value = Evaluate(stmt.Initializer);
            }

            environment.Define(stmt.Name.Lexeme, value);
        }