[
 (program) {
  (class_definition) {
   (class_header) {
    class
    A
   }
   (class_body) {
    {
    (structure_components_list) {
     (inner_constructor_definition) {
      (decl_specifiers) {
       A
      }
      (formal_args_list) {
       (
       )
      }
      ;
     }
     (inner_destructor_definition) {
      ~
      A
      (formal_args_list) {
       (
       )
      }
      ;
     }
    }
    }
   }
   ;
  }
 }
]