| -- C393009.A |
| -- |
| -- Grant of Unlimited Rights |
| -- |
| -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, |
| -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained |
| -- unlimited rights in the software and documentation contained herein. |
| -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making |
| -- this public release, the Government intends to confer upon all |
| -- recipients unlimited rights equal to those held by the Government. |
| -- These rights include rights to use, duplicate, release or disclose the |
| -- released technical data and computer software in whole or in part, in |
| -- any manner and for any purpose whatsoever, and to have or permit others |
| -- to do so. |
| -- |
| -- DISCLAIMER |
| -- |
| -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR |
| -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED |
| -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE |
| -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE |
| -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A |
| -- PARTICULAR PURPOSE OF SAID MATERIAL. |
| --* |
| -- |
| -- TEST OBJECTIVE: |
| -- Check that an extended type can be derived from an abstract type. |
| -- |
| -- TEST DESCRIPTION: |
| -- Declare an abstract type in the specification of a generic package. |
| -- Instantiate the package and derive an extended type from the abstract |
| -- (instantiated) type; override all abstract operations; use all |
| -- inherited operations; |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- 14 Oct 95 SAIC Fixed for ACVC 2.0.1 |
| -- |
| --! |
| |
| with Report; |
| procedure C393009 is |
| |
| package Display_Devices is |
| |
| type Display_Device_Enum is (None, TTY, Console, Big_Screen); |
| Display : Display_Device_Enum := None; |
| |
| end Display_Devices; |
| |
| --=======================================================================-- |
| |
| generic |
| |
| type Generic_Status is (<>); |
| |
| type Serial_Type is (<>); |
| |
| package Alert_System is |
| |
| type Alert_Type (Serial : Serial_Type) is abstract tagged record |
| Status : Generic_Status; |
| end record; |
| |
| Next_Serial_Number : Serial_Type := Serial_Type'First; |
| |
| procedure Handle (A : in out Alert_Type) is abstract; |
| -- abstract operation - must be overridden after instantiation |
| |
| procedure Display ( A : Alert_Type; |
| On : Display_Devices.Display_Device_Enum); |
| -- primitive operation of Alert_Type |
| -- not required to be overridden |
| |
| function Get_Serial_Number (A : Alert_Type) return Serial_Type; |
| -- primitive operation of Alert_Type |
| -- not required to be overridden |
| |
| end Alert_System; |
| |
| --=======================================================================-- |
| |
| package body Alert_System is |
| |
| procedure Display ( A : in Alert_Type; |
| On : Display_Devices.Display_Device_Enum) is |
| begin |
| Display_Devices.Display := On; |
| end Display; |
| |
| function Get_Serial_Number (A : Alert_Type) |
| return Serial_Type is |
| begin |
| return A.Serial; |
| end Get_Serial_Number; |
| |
| end Alert_System; |
| |
| --=======================================================================-- |
| |
| package NCC_1701 is |
| |
| type Status_Kind is (Green, Yellow, Red); |
| type Serial_Number_Type is new Integer range 1..Integer'Last; |
| |
| subtype Msg_Str is String (1..16); |
| Alert_Msg : Msg_Str := "C393009 passed."; |
| -- 123456789A123456 |
| |
| package Alert_Pkg is new Alert_System (Status_Kind, Serial_Number_Type); |
| |
| type New_Alert_Type(Serial : Serial_Number_Type) is |
| new Alert_Pkg.Alert_Type(Serial) with record |
| Message : Msg_Str; |
| end record; |
| |
| -- procedure Display is inherited by New_Alert_Type |
| |
| -- function Get_Serial_Number is inherited by New_Alert_Type |
| procedure Handle (NA : in out New_Alert_Type); -- must be overridden |
| procedure Init (NA : in out New_Alert_Type); -- new primitive |
| |
| NA : New_Alert_Type(Alert_Pkg.Next_Serial_Number); |
| -- New_Alert_Type is not abstract, so an object of that |
| -- type may be declared |
| |
| end NCC_1701; |
| |
| package body NCC_1701 is |
| |
| procedure Handle (NA : in out New_Alert_Type) is |
| begin |
| NA.Message := Alert_Msg; |
| Display (NA, On => Display_Devices.TTY); |
| end Handle; |
| |
| procedure Init (NA : in out New_Alert_Type) is -- new primitive operation |
| begin -- for New_Alert_Type |
| NA := (Serial=> NA.Serial, Status => Green, Message => (others => ' ')); |
| end Init; |
| |
| end NCC_1701; |
| |
| use NCC_1701; |
| use type Display_Devices.Display_Device_Enum; |
| |
| begin |
| |
| Report.Test ("C393009", "Check that an extended type can be derived " & |
| "from an abstract type"); |
| |
| Init (NA); |
| if (Get_Serial_Number (NA) /= 1) |
| or (NA.Status /= Green) |
| or (Display_Devices.Display /= Display_Devices.None) then |
| Report.Failed ("Wrong Initialization"); |
| end if; |
| |
| Handle (NA); |
| if (Get_Serial_Number (NA) /= 1) |
| or (NA.Status /= Green) |
| or (NA.Message /= Alert_Msg) |
| or (Display_Devices.Display /= Display_Devices.TTY) then |
| Report.Failed ("Wrong results from Handle"); |
| end if; |
| |
| Report.Result; |
| |
| end C393009; |