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1 149 jeremybenn
-- CA11006.A
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--
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
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--     this public release, the Government intends to confer upon all
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--     recipients unlimited rights  equal to those held by the Government.
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--     These rights include rights to use, duplicate, release or disclose the
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--     released technical data and computer software in whole or in part, in
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--     any manner and for any purpose whatsoever, and to have or permit others
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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--      Check that the private part of a child library unit can utilize
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--      its parent unit's private definition.
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--
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-- TEST DESCRIPTION:
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--      Declare a package and public child package, both with private
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--      parts.  The child package will have a private extension of a type
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--      declared in the parent's private part.  In addition, the private
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--      part of the child package specification will make use of some of
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--      the components declared in the private part of the parent.
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--
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--
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-- CHANGE HISTORY:
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--      06 Dec 94   SAIC    ACVC 2.0
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--      15 Nov 95   SAIC    Update and repair for ACVC 2.0.1
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--
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--!
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package CA11006_0 is      -- Package File_Package
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   type File_Descriptor is private;
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   type File_Mode       is (Read_Only, Write_Only, Read_Write);
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   type File_Type       is tagged private;
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   function  Next_Available_File return File_Descriptor;
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private
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   type File_Measure    is range 0 .. 1000;
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   type File_Descriptor is new Integer;
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   Null_File       : constant File_Descriptor := 0;
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   Default_Mode    : constant File_Mode       := Read_Write;
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   type File_Type is tagged
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     record
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        Descriptor : File_Descriptor := Null_File;
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        Mode       : File_Mode       := Default_Mode;
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     end record;
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   System_File : File_Type;
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end CA11006_0;               -- Package File_Package
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     --=================================================================--
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package body CA11006_0 is    -- Package File_Package
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   File_Count : Integer := 0;
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   function Next_Available_File return File_Descriptor is
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   begin
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      File_Count := File_Count + 1;
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      return File_Descriptor (File_Count);
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   end Next_Available_File;
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end CA11006_0;               -- Package File_Package
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     --=================================================================--
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package CA11006_0.CA11006_1 is        -- Child package File_Package.Operations
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   type File_Length_Type   is private;
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   type Extended_File_Type is new File_Type with private;
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   System_Extended_File : constant Extended_File_Type;
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   procedure Create_File (Mode : in     File_Mode;
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                          File :    out Extended_File_Type);
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   procedure Compress_File (Original        : in     Extended_File_Type;
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                            Compressed_File :    out Extended_File_Type);
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   function  Validate (File : in Extended_File_Type) return Boolean;
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   function  Validate_Compression (File : in Extended_File_Type)
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     return Boolean;
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                                   -- These two validation functions provide
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                                   -- the capability to check the private
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                                   -- components defined in the parent and
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                                   -- child packages from within the client
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                                   -- program.
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private
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   type File_Length_Type is new File_Measure;       -- Parent private type.
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   Min_File_Size : File_Length_Type := File_Length_Type'First;
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   Max_File_Size : File_Length_Type := File_Length_Type'Last;
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   type Extended_File_Type is new File_Type with        -- Parent type.
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      record
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         Blocks : File_Length_Type := Min_File_Size;
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      end record;
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   System_Extended_File : constant Extended_File_Type :=
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     (Descriptor => System_File.Descriptor,      -- Parent private object.
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      Mode       => Read_Only,                   -- Parent enumeration literal.
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      Blocks     => Min_File_Size);
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end CA11006_0.CA11006_1;             -- Child Package File_Package.Operations
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     --=================================================================--
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                                -- Child package body File_Package.Operations
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package body CA11006_0.CA11006_1 is
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   procedure Create_File
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     (Mode : in     File_Mode;
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      File :    out Extended_File_Type) is
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   begin
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      File.Descriptor := Next_Available_File;    -- Parent subprogram.
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      File.Mode       := Default_Mode;           -- Parent private constant.
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      File.Blocks     := Max_File_Size;
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   end Create_File;
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   ------------------------------------------------------------------------
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   procedure Compress_File (Original        : in     Extended_File_Type;
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                            Compressed_File :    out Extended_File_Type) is
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   begin
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      Compressed_File.Descriptor := Next_Available_File;
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      Compressed_File.Mode       := Read_Only;
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      Compressed_File.Blocks     := Original.Blocks / 2;  -- Simulated file
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   end Compress_File;                                     -- compression.
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   ------------------------------------------------------------------------
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   function  Validate (File : in Extended_File_Type) return Boolean is
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   begin
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      if ((File.Descriptor /= System_Extended_File.Descriptor) and
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          (File.Mode = Read_Write)                             and
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          (File.Blocks = Max_File_Size))                       then
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         return True;
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      else
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         return False;
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      end if;
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   end Validate;
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   ------------------------------------------------------------------------
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   function  Validate_Compression (File : in Extended_File_Type)
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      return Boolean is
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   begin
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      if ((File.Descriptor /= System_File.Descriptor) and
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          (File.Mode = Read_Only)                     and
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          (File.Blocks = Max_File_Size/2))            then
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         return True;
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      else
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         return False;
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      end if;
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   end Validate_Compression;
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end CA11006_0.CA11006_1;         -- Child package body File_Package.Operations
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     --=================================================================--
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with CA11006_0.CA11006_1;        -- with Child package File_Package.Operations
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with Report;
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procedure CA11006 is
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   package File      renames CA11006_0;
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   package File_Ops  renames CA11006_0.CA11006_1;
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   Validation_File_Mode : File.File_Mode := File.Read_Only;
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   Validation_File,
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   Storage_Copy         : File_Ops.Extended_File_Type;
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begin
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   Report.Test ("CA11006", "Check that the private part of a child "  &
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                           "library unit can utilize its parent "     &
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                           "unit's private definition");
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   File_Ops.Create_File (Validation_File_Mode, Validation_File);
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   if not File_Ops.Validate (Validation_File) then
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      Report.Failed ("Incorrect initialization of file");
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   end if;
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   File_Ops.Compress_File (Validation_File, Storage_Copy);
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   if not (File_Ops.Validate (Validation_File) and
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           File_Ops.Validate_Compression (Storage_Copy))
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   then
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      Report.Failed ("Incorrect compression of file");
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   end if;
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   Report.Result;
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end CA11006;

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