-- CA11002.A
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-- CA11002.A
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--
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--
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-- Grant of Unlimited Rights
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-- Grant of Unlimited Rights
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--
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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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-- 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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-- 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 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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-- 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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-- 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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-- 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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-- 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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-- 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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-- any manner and for any purpose whatsoever, and to have or permit others
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-- to do so.
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-- to do so.
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--
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--
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-- DISCLAIMER
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-- DISCLAIMER
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--
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--
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-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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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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-- 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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-- 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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-- 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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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--*
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--
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--
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-- OBJECTIVE:
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-- OBJECTIVE:
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-- Check that a public child can utilize its parent unit's visible
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-- Check that a public child can utilize its parent unit's visible
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-- definitions.
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-- definitions.
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--
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--
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-- TEST DESCRIPTION:
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-- TEST DESCRIPTION:
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-- Declare a parent package that contains the following: type, object,
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-- Declare a parent package that contains the following: type, object,
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-- constant, exception, and subprograms. Declare a public child unit
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-- constant, exception, and subprograms. Declare a public child unit
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-- that utilizes the components found in the visible part of its parent.
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-- that utilizes the components found in the visible part of its parent.
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--
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--
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-- Demonstrate utilization of the following parent components in the
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-- Demonstrate utilization of the following parent components in the
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-- child package:
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-- child package:
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--
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--
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-- Parent
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-- Parent
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-- Type X
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-- Type X
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-- Constant X
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-- Constant X
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-- Object X
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-- Object X
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-- Subprogram X
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-- Subprogram X
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-- Exception X
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-- Exception X
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--
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--
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-- This abstraction simulates a portion of a simple operating system.
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-- This abstraction simulates a portion of a simple operating system.
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--
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--
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--
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--
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-- CHANGE HISTORY:
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-- CHANGE HISTORY:
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-- 06 Dec 94 SAIC ACVC 2.0
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-- 06 Dec 94 SAIC ACVC 2.0
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--
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--
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--!
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--!
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package CA11002_0 is -- Package OS.
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package CA11002_0 is -- Package OS.
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type File_Descriptor is new Integer;
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type File_Descriptor is new Integer;
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type File_Mode is (Read_Only, Write_Only, Read_Write);
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type File_Mode is (Read_Only, Write_Only, Read_Write);
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Null_File : constant File_Descriptor := 0;
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Null_File : constant File_Descriptor := 0;
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Default_Mode : constant File_Mode := Read_Only;
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Default_Mode : constant File_Mode := Read_Only;
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Active_Mode : constant File_Mode := Read_Write;
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Active_Mode : constant File_Mode := Read_Write;
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type File_Type is
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type File_Type is
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record
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record
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Descriptor : File_Descriptor := Null_File;
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Descriptor : File_Descriptor := Null_File;
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Mode : File_Mode := Default_Mode;
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Mode : File_Mode := Default_Mode;
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end record;
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end record;
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System_File : File_Type;
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System_File : File_Type;
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File_Mode_Error : exception;
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File_Mode_Error : exception;
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function Next_Available_File return File_Descriptor;
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function Next_Available_File return File_Descriptor;
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function Mode_Of_File (File : File_Type) return File_Mode;
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function Mode_Of_File (File : File_Type) return File_Mode;
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end CA11002_0; -- Package OS.
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end CA11002_0; -- Package OS.
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--=================================================================--
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--=================================================================--
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package body CA11002_0 is -- Package body OS.
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package body CA11002_0 is -- Package body OS.
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File_Count : Integer := 0;
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File_Count : Integer := 0;
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function Next_Available_File return File_Descriptor is
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function Next_Available_File return File_Descriptor is
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begin
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begin
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File_Count := File_Count + 1;
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File_Count := File_Count + 1;
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return (File_Descriptor(File_Count)); -- Type conversion.
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return (File_Descriptor(File_Count)); -- Type conversion.
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end Next_Available_File;
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end Next_Available_File;
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--------------------------------------------------------------
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--------------------------------------------------------------
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function Mode_Of_File (File : File_Type) return File_Mode is
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function Mode_Of_File (File : File_Type) return File_Mode is
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Mode : File_Mode := File.Mode;
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Mode : File_Mode := File.Mode;
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begin
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begin
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return (Mode);
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return (Mode);
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end Mode_Of_File;
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end Mode_Of_File;
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end CA11002_0; -- Package body OS.
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end CA11002_0; -- Package body OS.
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--=================================================================--
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--=================================================================--
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package CA11002_0.CA11002_1 is -- Child package OS.Operations.
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package CA11002_0.CA11002_1 is -- Child package OS.Operations.
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-- Dot qualification of types, objects, etc. from parent is not required
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-- Dot qualification of types, objects, etc. from parent is not required
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-- in a child unit.
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-- in a child unit.
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procedure Create_File (Mode : in File_Mode:= Active_Mode;
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procedure Create_File (Mode : in File_Mode:= Active_Mode;
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File : out File_Type);
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File : out File_Type);
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end CA11002_0.CA11002_1; -- Child package OS.Operations.
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end CA11002_0.CA11002_1; -- Child package OS.Operations.
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--=================================================================--
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--=================================================================--
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with Report;
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with Report;
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package body CA11002_0.CA11002_1 is -- Child package body OS.Operations.
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package body CA11002_0.CA11002_1 is -- Child package body OS.Operations.
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function New_File_Validated (File : File_Type) -- Ensure that a newly
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function New_File_Validated (File : File_Type) -- Ensure that a newly
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return Boolean is -- created file has
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return Boolean is -- created file has
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Result : Boolean := False; -- appropriate values.
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Result : Boolean := False; -- appropriate values.
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begin
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begin
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if (File.Descriptor > System_File.Descriptor) and -- Parent object.
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if (File.Descriptor > System_File.Descriptor) and -- Parent object.
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(File.Mode in File_Mode ) -- Parent type.
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(File.Mode in File_Mode ) -- Parent type.
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then
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then
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Result := True;
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Result := True;
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end if;
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end if;
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return (Result);
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return (Result);
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end New_File_Validated;
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end New_File_Validated;
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--------------------------------------------------------------
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--------------------------------------------------------------
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procedure Create_File
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procedure Create_File
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(Mode : in File_Mode := Active_Mode; -- Parent constant.
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(Mode : in File_Mode := Active_Mode; -- Parent constant.
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File : out File_Type) is -- Parent type.
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File : out File_Type) is -- Parent type.
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New_File : File_Type;
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New_File : File_Type;
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begin
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begin
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New_File.Descriptor := Next_Available_File; -- Parent subprogram.
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New_File.Descriptor := Next_Available_File; -- Parent subprogram.
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New_File.Mode := Mode;
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New_File.Mode := Mode;
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if New_File_Validated (File => New_File) then
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if New_File_Validated (File => New_File) then
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File := New_File;
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File := New_File;
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end if;
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end if;
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end Create_File;
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end Create_File;
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end CA11002_0.CA11002_1; -- Child Package body OS.Operations.
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end CA11002_0.CA11002_1; -- Child Package body OS.Operations.
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--=================================================================--
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--=================================================================--
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-- Child library subprogram Convert_File_Mode specification.
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-- Child library subprogram Convert_File_Mode specification.
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procedure CA11002_0.CA11002_2 (File : in out File_Type; -- Parent type.
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procedure CA11002_0.CA11002_2 (File : in out File_Type; -- Parent type.
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New_Mode : in File_Mode); -- Parent type.
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New_Mode : in File_Mode); -- Parent type.
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--=================================================================--
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--=================================================================--
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with Report;
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with Report;
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-- Child library subprogram Convert_File_Mode body.
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-- Child library subprogram Convert_File_Mode body.
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procedure CA11002_0.CA11002_2 (File : in out File_Type;
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procedure CA11002_0.CA11002_2 (File : in out File_Type;
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New_Mode : in File_Mode) is
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New_Mode : in File_Mode) is
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begin
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begin
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if File.Mode = New_Mode then
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if File.Mode = New_Mode then
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raise File_Mode_Error; -- Parent exception.
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raise File_Mode_Error; -- Parent exception.
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Report.Failed ("Exception not raised in child unit");
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Report.Failed ("Exception not raised in child unit");
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else
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else
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File.Mode := New_Mode;
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File.Mode := New_Mode;
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end if;
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end if;
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end CA11002_0.CA11002_2;
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end CA11002_0.CA11002_2;
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--=================================================================--
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--=================================================================--
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with Report;
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with Report;
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with CA11002_0.CA11002_1; -- Child package OS.Operations.
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with CA11002_0.CA11002_1; -- Child package OS.Operations.
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with CA11002_0.CA11002_2; -- Child subprogram OS.Convert_File_Mode,
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with CA11002_0.CA11002_2; -- Child subprogram OS.Convert_File_Mode,
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-- Implicitly with parent, OS.
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-- Implicitly with parent, OS.
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use CA11002_0; -- All user-defined operators directly
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use CA11002_0; -- All user-defined operators directly
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-- visible.
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-- visible.
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procedure CA11002 is
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procedure CA11002 is
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begin
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begin
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Report.Test ("CA11002", "Check that a public child can utilize its " &
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Report.Test ("CA11002", "Check that a public child can utilize its " &
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"parent unit's visible definitions");
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"parent unit's visible definitions");
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File_Creation: -- This processing block will demonstrate
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File_Creation: -- This processing block will demonstrate
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-- use of child package subroutine that
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-- use of child package subroutine that
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-- takes advantage of components declared
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-- takes advantage of components declared
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-- in the parent package.
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-- in the parent package.
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declare
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declare
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User_File : File_Type;
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User_File : File_Type;
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begin
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begin
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CA11002_0.CA11002_1.Create_File (File => User_File); -- Default mode
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CA11002_0.CA11002_1.Create_File (File => User_File); -- Default mode
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-- parameter used in
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-- parameter used in
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-- this call.
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-- this call.
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if (User_File.Descriptor = System_File.Descriptor) or
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if (User_File.Descriptor = System_File.Descriptor) or
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(User_File.Mode = Default_Mode)
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(User_File.Mode = Default_Mode)
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then
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then
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Report.Failed ("Incorrect file creation");
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Report.Failed ("Incorrect file creation");
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end if;
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end if;
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end File_Creation;
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end File_Creation;
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--------------------------------------------------------------
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--------------------------------------------------------------
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File_Mode_Conversion: -- This processing block will demonstrate
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File_Mode_Conversion: -- This processing block will demonstrate
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-- the occurrence of a (forced) exception
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-- the occurrence of a (forced) exception
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-- being raised in a child subprogram, and
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-- being raised in a child subprogram, and
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-- propagated to the caller. The exception
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-- propagated to the caller. The exception
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-- is handled, and the child subprogram
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-- is handled, and the child subprogram
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-- is called again, this time to perform
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-- is called again, this time to perform
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-- without error.
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-- without error.
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declare
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declare
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procedure Convert_File_Mode (File : in out File_Type;
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procedure Convert_File_Mode (File : in out File_Type;
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New_Mode : in File_Mode) renames CA11002_0.CA11002_2;
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New_Mode : in File_Mode) renames CA11002_0.CA11002_2;
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New_File : File_Type;
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New_File : File_Type;
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begin -- Raise an exception with this
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begin -- Raise an exception with this
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-- illegal conversion operation
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-- illegal conversion operation
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-- (attempt to change to current mode).
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-- (attempt to change to current mode).
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Convert_File_Mode (File => New_File,
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Convert_File_Mode (File => New_File,
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New_Mode => Default_Mode);
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New_Mode => Default_Mode);
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Report.Failed ("Exception should have been raised in child unit");
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Report.Failed ("Exception should have been raised in child unit");
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exception
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exception
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when File_Mode_Error => -- Perform the conversion again, this
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when File_Mode_Error => -- Perform the conversion again, this
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-- time with a different file mode.
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-- time with a different file mode.
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Convert_File_Mode (File => New_File,
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Convert_File_Mode (File => New_File,
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New_Mode => CA11002_0.Active_Mode);
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New_Mode => CA11002_0.Active_Mode);
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if New_File.Mode /= Read_Write then
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if New_File.Mode /= Read_Write then
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Report.Failed ("Incorrect result from mode conversion operation");
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Report.Failed ("Incorrect result from mode conversion operation");
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end if;
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end if;
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when others =>
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when others =>
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Report.Failed ("Unexpected exception raised in File_Mode_Conversion");
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Report.Failed ("Unexpected exception raised in File_Mode_Conversion");
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end File_Mode_Conversion;
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end File_Mode_Conversion;
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Report.Result;
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Report.Result;
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end CA11002;
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end CA11002;
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