ca110041.a

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-- CA110041.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:
--      See CA110042.AM
--
-- TEST DESCRIPTION:
--      See CA110042.AM
--
-- TEST FILES:
--      The following files comprise this test:
--
--         CA110040.A
--      => CA110041.A
--         CA110042.AM
--
-- CHANGE HISTORY:
--      06 Dec 94   SAIC    ACVC 2.0
--      26 Apr 96   SAIC    ACVC 2.1: Modified prologue.
--
--!

package CA110040.CA110041 is         -- Child Package Computer_System.Manager

   type User_Account is new Account with private;

   procedure Initialize_User_Account (Acct : out User_Account);

private

-- The private portion of this spec demonstrates that components contained
-- in the visible part of the parent are directly visible in the private 
-- part of a public child.

   type Account_Access_Type is (None, Guest, User, System);

   type User_Account is new Account with                   -- Parent type.
      record
         Privilege : Account_Access_Type := None;
      end record;

   System_Account : User_Account := 
     (User_ID   => Administrator_Account.User_ID,          -- Parent constant.
      Privilege => System);                                -- User_ID has been
                                                           -- set to 1.
   Auditor_Account : User_Account :=
     (User_ID   => Next_Available_ID,                      -- Parent function.
      Privilege => System);                                -- User_ID has been
                                                           -- set to 2.
   Total_Authorized_Accounts : System_Account_Capacity 
     renames Total_Accounts;                               -- Parent object.

   Unauthorized_Account : exception 
     renames Illegal_Account;                              -- Parent exception

end CA110040.CA110041;             -- Child Package Computer_System.Manager

     --=================================================================--

                                 -- Child Package body Computer_System.Manager
package body CA110040.CA110041 is  

   function  Account_Limit_Reached  return Boolean is
   begin
      if Total_Authorized_Accounts = Maximum_System_Accounts then
         return (True);
      else
         return (False);
      end if;
   end Account_Limit_Reached;
   ---------------------------------------------------------------
   function Valid_Account (Acct : User_Account) return Boolean is
      Result : Boolean := False; 
   begin
      if (Acct.User_ID /= System_Account.User_ID) and
         (Acct.User_ID /= Auditor_Account.User_ID) 
      then
         Result := True;
      end if;
      return (Result);
   end Valid_Account;
   ---------------------------------------------------------------
   procedure Initialize_User_Account (Acct : out User_Account) is
   begin
      if Account_Limit_Reached then
         raise Account_Limit_Exceeded;           
      else                                       
         Acct.User_ID := Next_Available_ID;
         Acct.Privilege := User;
      end if;
      if not Valid_Account (Acct) then
         raise Unauthorized_Account;
      end if;
   end Initialize_User_Account;

end CA110040.CA110041;          -- Child Package body Computer_System.Manager