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-- CA11006.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.
--*
--
-- OBJECTIVE:
-- Check that the private part of a child library unit can utilize
-- its parent unit's private definition.
--
-- TEST DESCRIPTION:
-- Declare a package and public child package, both with private
-- parts. The child package will have a private extension of a type
-- declared in the parent's private part. In addition, the private
-- part of the child package specification will make use of some of
-- the components declared in the private part of the parent.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 15 Nov 95 SAIC Update and repair for ACVC 2.0.1
--
--!
package CA11006_0 is -- Package File_Package
type File_Descriptor is private;
type File_Mode is (Read_Only, Write_Only, Read_Write);
type File_Type is tagged private;
function Next_Available_File return File_Descriptor;
private
type File_Measure is range 0 .. 1000;
type File_Descriptor is new Integer;
Null_File : constant File_Descriptor := 0;
Default_Mode : constant File_Mode := Read_Write;
type File_Type is tagged
record
Descriptor : File_Descriptor := Null_File;
Mode : File_Mode := Default_Mode;
end record;
System_File : File_Type;
end CA11006_0; -- Package File_Package
--=================================================================--
package body CA11006_0 is -- Package File_Package
File_Count : Integer := 0;
function Next_Available_File return File_Descriptor is
begin
File_Count := File_Count + 1;
return File_Descriptor (File_Count);
end Next_Available_File;
end CA11006_0; -- Package File_Package
--=================================================================--
package CA11006_0.CA11006_1 is -- Child package File_Package.Operations
type File_Length_Type is private;
type Extended_File_Type is new File_Type with private;
System_Extended_File : constant Extended_File_Type;
procedure Create_File (Mode : in File_Mode;
File : out Extended_File_Type);
procedure Compress_File (Original : in Extended_File_Type;
Compressed_File : out Extended_File_Type);
function Validate (File : in Extended_File_Type) return Boolean;
function Validate_Compression (File : in Extended_File_Type)
return Boolean;
-- These two validation functions provide
-- the capability to check the private
-- components defined in the parent and
-- child packages from within the client
-- program.
private
type File_Length_Type is new File_Measure; -- Parent private type.
Min_File_Size : File_Length_Type := File_Length_Type'First;
Max_File_Size : File_Length_Type := File_Length_Type'Last;
type Extended_File_Type is new File_Type with -- Parent type.
record
Blocks : File_Length_Type := Min_File_Size;
end record;
System_Extended_File : constant Extended_File_Type :=
(Descriptor => System_File.Descriptor, -- Parent private object.
Mode => Read_Only, -- Parent enumeration literal.
Blocks => Min_File_Size);
end CA11006_0.CA11006_1; -- Child Package File_Package.Operations
--=================================================================--
-- Child package body File_Package.Operations
package body CA11006_0.CA11006_1 is
procedure Create_File
(Mode : in File_Mode;
File : out Extended_File_Type) is
begin
File.Descriptor := Next_Available_File; -- Parent subprogram.
File.Mode := Default_Mode; -- Parent private constant.
File.Blocks := Max_File_Size;
end Create_File;
------------------------------------------------------------------------
procedure Compress_File (Original : in Extended_File_Type;
Compressed_File : out Extended_File_Type) is
begin
Compressed_File.Descriptor := Next_Available_File;
Compressed_File.Mode := Read_Only;
Compressed_File.Blocks := Original.Blocks / 2; -- Simulated file
end Compress_File; -- compression.
------------------------------------------------------------------------
function Validate (File : in Extended_File_Type) return Boolean is
begin
if ((File.Descriptor /= System_Extended_File.Descriptor) and
(File.Mode = Read_Write) and
(File.Blocks = Max_File_Size)) then
return True;
else
return False;
end if;
end Validate;
------------------------------------------------------------------------
function Validate_Compression (File : in Extended_File_Type)
return Boolean is
begin
if ((File.Descriptor /= System_File.Descriptor) and
(File.Mode = Read_Only) and
(File.Blocks = Max_File_Size/2)) then
return True;
else
return False;
end if;
end Validate_Compression;
end CA11006_0.CA11006_1; -- Child package body File_Package.Operations
--=================================================================--
with CA11006_0.CA11006_1; -- with Child package File_Package.Operations
with Report;
procedure CA11006 is
package File renames CA11006_0;
package File_Ops renames CA11006_0.CA11006_1;
Validation_File_Mode : File.File_Mode := File.Read_Only;
Validation_File,
Storage_Copy : File_Ops.Extended_File_Type;
begin
Report.Test ("CA11006", "Check that the private part of a child " &
"library unit can utilize its parent " &
"unit's private definition");
File_Ops.Create_File (Validation_File_Mode, Validation_File);
if not File_Ops.Validate (Validation_File) then
Report.Failed ("Incorrect initialization of file");
end if;
File_Ops.Compress_File (Validation_File, Storage_Copy);
if not (File_Ops.Validate (Validation_File) and
File_Ops.Validate_Compression (Storage_Copy))
then
Report.Failed ("Incorrect compression of file");
end if;
Report.Result;
end CA11006;
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