| with Ada.Finalization; | |
| package Opt68 is | |
| type Cont is new Ada.Finalization.Controlled with null record; | |
| type Element is record | |
| C : Cont; | |
| end record; | |
| type Queue_Element; | |
| type A_Queue_Element is access Queue_Element; | |
| type Queue_Element is record | |
| Value : Element; | |
| Next : A_Queue_Element; | |
| end record; | |
| type Queue is limited record | |
| Sz : Natural; | |
| Front : A_Queue_Element; | |
| Back : A_Queue_Element; | |
| end record; | |
| procedure Copy (dest : in out Queue; src : Queue); | |
| end Opt68; |