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-- CC51003.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 if the ancestor type of a formal derived type is a composite
-- type that is not an array type, the formal type inherits components,
-- including discriminants, from the ancestor type.
--
-- Check for the case where the ancestor type is a record type, and the
-- formal derived type is declared in a generic subprogram.
--
-- TEST DESCRIPTION:
-- Define a discriminated record type in a package. Declare a
-- library-level generic subprogram with a formal derived type using the
-- record type as ancestor. Give the generic subprogram an in out
-- parameter of the formal derived type. Inside the generic, use the
-- discriminant component and modify the remaining components of the
-- record parameter. In the main program, declare record objects with two
-- different discriminant values. Derive an indefinite type from the
-- record type with a new discriminant part. Instantiate the generic
-- subprogram for the root record subtype and the derived subtype. Call
-- the root subtype instance with actual parameters having the two
-- discriminant values. Also call the derived subtype instance with
-- an appropriate actual.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 03 Jan 95 SAIC Removed unknown discriminant part from formal
-- derived type.
-- 05 Nov 95 SAIC ACVC 2.0.1 fixes: Removed constrained subtype
-- instantiation and associated declarations.
-- Modified commentary.
--
--!
-- Simulate a fragment of a matrix manipulation application.
package CC51003_0 is -- Matrix types.
type Matrix is array (Natural range <>, Natural range <>) of Integer;
type Square (Side : Natural) is record
Mat : Matrix (1 .. Side, 1 .. Side);
end record;
type Double_Square (Number : Natural) is record
Left : Square (Number);
Right : Square (Number);
end record;
end CC51003_0;
-- No body for CC51003_0;
--==================================================================--
with CC51003_0; -- Matrix types.
generic -- Generic double-matrix "clear" operation.
type Dbl_Square is new CC51003_0.Double_Square; -- Indefinite
procedure CC51003_1 (Dbl : in out Dbl_Square); -- formal.
--==================================================================--
procedure CC51003_1 (Dbl : in out Dbl_Square) is
begin
for I in 1 .. Dbl.Number loop -- Discriminants inherited from ancestor
for J in 1 .. Dbl.Number loop -- type (should work even for derived type
-- declaring new discriminant part).
Dbl.Left.Mat (I, J) := 0; -- Other components inherited from
Dbl.Right.Mat (I, J) := 0; -- ancestor type.
end loop;
end loop;
end CC51003_1;
--==================================================================--
with CC51003_0; -- Matrix types.
with CC51003_1; -- Generic double-matrix "clear" operation.
with Report;
procedure CC51003 is
use CC51003_0; -- "/=" operator directly visible for Double_Square.
-- Matrices of root type:
Mat_2x2 : Square(Side => 2) := (Side => 2,
Mat => ( (1, 2), (3, 4) ));
Dbl_Mat_2x2 : Double_Square(Number => 2) := (2, Mat_2x2, Mat_2x2);
Zero_2x2 : constant Square(2) := (2, Mat => ( (0, 0), (0, 0) ));
Expected_2x2 : constant Double_Square(2) := (Number => 2,
others => Zero_2x2);
Mat_3x3 : Square(Side => 3) := (Side => 3,
Mat => (1 => (1, 4, 9),
others => (1 => 5,
others => 7)));
Dbl_Mat_3x3 : Double_Square(3) := (Number => 3, others => Mat_3x3);
Zero_3x3 : constant Square(3) := (3, Mat => (others => (0,0,0)));
Expected_3x3 : constant Double_Square(Number => 3) :=
(3, Zero_3x3, Zero_3x3);
-- Derived type with new discriminant part (which constrains parent):
type New_Dbl_Sq (Num : Natural) is new Double_Square(Num);
New_Dbl_2x2 : New_Dbl_Sq (Num => 2) := (2, Mat_2x2, Mat_2x2);
Expected_New_2x2 : constant New_Dbl_Sq := (Num => 2, others => Zero_2x2);
-- Instantiations:
procedure Clr_Dbl is new CC51003_1 (Double_Square);
procedure Clr_New_Dbl is new CC51003_1 (New_Dbl_Sq);
begin
Report.Test ("CC51003", "Check that a formal derived record type " &
"inherits components, including discriminants, " &
"from its ancestor type");
-- Simulate use of matrix manipulation operations.
Clr_Dbl (Dbl_Mat_2x2);
if (Dbl_Mat_2x2 /= Expected_2x2) then
Report.Failed ("Wrong result for root type (2x2 matrix)");
end if;
Clr_Dbl (Dbl_Mat_3x3);
if (Dbl_Mat_3x3 /= Expected_3x3) then
Report.Failed ("Wrong result for root type (3x3 matrix)");
end if;
Clr_New_Dbl (New_Dbl_2x2);
if (New_Dbl_2x2 /= Expected_New_2x2) then
Report.Failed ("Wrong result for derived type (2x2 matrix)");
end if;
Report.Result;
end CC51003;
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