-- 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;