3 -- Grant of Unlimited Rights
5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
7 -- unlimited rights in the software and documentation contained herein.
8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
9 -- this public release, the Government intends to confer upon all
10 -- recipients unlimited rights equal to those held by the Government.
11 -- These rights include rights to use, duplicate, release or disclose the
12 -- released technical data and computer software in whole or in part, in
13 -- any manner and for any purpose whatsoever, and to have or permit others
18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
27 -- Check that if the ancestor type of a formal derived type is a composite
28 -- type that is not an array type, the formal type inherits components,
29 -- including discriminants, from the ancestor type.
31 -- Check for the case where the ancestor type is a tagged type, and the
32 -- formal derived type is declared in a generic subprogram.
35 -- Define a discriminated tagged type in a package. Declare a
36 -- library-level generic subprogram with a formal derived type using the
37 -- tagged type as ancestor. Give the generic subprogram an in out
38 -- parameter of the formal derived type. Inside the generic, use the
39 -- discriminant component and modify the remaining components of the
40 -- tagged parameter. In the main program, declare tagged record objects
41 -- with two different discriminant values. Derive an indefinite type from
42 -- the tagged type with a new discriminant part. Instantiate the
43 -- generic subprogram for the root tagged subtype and the derived subtype.
44 -- Call the root subtype instance with actual parameters having the two
45 -- discriminant values. Also call the derived subtype instance with an
46 -- appropriate actual.
50 -- 06 Dec 94 SAIC ACVC 2.0
51 -- 05 Jan 94 SAIC Removed unknown discriminant part from formal
52 -- derived type. Moved declaration of type
53 -- New_Dbl_Sq from main subprogram to CC51004_0.
54 -- 05 Nov 95 SAIC ACVC 2.0.1 fixes: Removed constrained subtype
55 -- instantiation and associated declarations.
56 -- Modified commentary.
60 -- Simulate a fragment of a matrix manipulation application.
62 package CC51004_0
is -- Matrix types.
64 type Matrix
is array (Natural range <>, Natural range <>) of Integer;
66 type Square
(Side
: Natural) is record
67 Mat
: Matrix
(1 .. Side
, 1 .. Side
);
70 type Sq_Type
(Num1
: Natural) is tagged record
74 -- Extended type with new discriminant part (which constrains parent):
76 type New_Dbl_Sq
(Num2
: Natural) is new Sq_Type
(Num2
) with record
83 -- No body for CC51004_0;
86 --==================================================================--
89 with CC51004_0
; -- Matrix types.
90 generic -- Generic matrix "clear" operation.
91 type Squares
is new CC51004_0
.Sq_Type
with private; -- Indefinite
92 procedure CC51004_1
(Sq
: in out Squares
); -- formal.
95 --==================================================================--
98 procedure CC51004_1
(Sq
: in out Squares
) is
100 for I
in 1 .. Sq
.Num1
loop -- Discriminants inherited from ancestor
101 for J
in 1 .. Sq
.Num1
loop -- type (should work even for derived type
102 -- declaring new discriminant part).
103 Sq
.One
.Mat
(I
, J
) := 0; -- Other components inherited from
110 --==================================================================--
113 with CC51004_0
; -- Matrix types.
114 with CC51004_1
; -- Generic double-matrix "clear" operation.
119 use CC51004_0
; -- "/=" operator directly visible for Sq_Type.
121 -- Matrices of root type:
123 Mat_2x2
: Square
(Side
=> 2) := (Side
=> 2, Mat
=> ( (1, 2), (3, 4) ));
124 One_Mat_2x2
: Sq_Type
(Num1
=> 2) := (2, Mat_2x2
);
126 Zero_2x2
: constant Square
(2) := (2, Mat
=> ( (0, 0), (0, 0) ));
127 Expected_2x2
: constant Sq_Type
(2) := (Num1
=> 2, One
=> Zero_2x2
);
130 Mat_3x3
: Square
(Side
=> 3) := (Side
=> 3,
131 Mat
=> (1 => (5, 2, 7),
134 One_Mat_3x3
: Sq_Type
(3) := (Num1
=> 3, One
=> Mat_3x3
);
136 Zero_3x3
: constant Square
(3) := (3, Mat
=> (others => (0,0,0)));
137 Expected_3x3
: constant Sq_Type
(Num1
=> 3) := (3, Zero_3x3
);
140 New_Dbl_2x2
: New_Dbl_Sq
(Num2
=> 2) := (2, others => Mat_2x2
);
141 Expected_New_2x2
: constant New_Dbl_Sq
:= (2, Zero_2x2
, Mat_2x2
);
147 procedure Clr_Mat
is new CC51004_1
(Sq_Type
);
148 procedure Clr_New_Dbl
is new CC51004_1
(New_Dbl_Sq
);
152 Report
.Test
("CC51004", "Check that a formal derived tagged type " &
153 "inherits components, including discriminants, " &
154 "from its ancestor type");
156 -- Simulate use of matrix manipulation operations.
159 Clr_Mat
(One_Mat_2x2
);
161 if (One_Mat_2x2
/= Expected_2x2
) then
162 Report
.Failed
("Wrong result root type (2x2 matrix)");
166 Clr_Mat
(One_Mat_3x3
);
168 if (One_Mat_3x3
/= Expected_3x3
) then
169 Report
.Failed
("Wrong result root type (3x3 matrix)");
173 Clr_New_Dbl
(New_Dbl_2x2
);
175 if (New_Dbl_2x2
/= Expected_New_2x2
) then
176 Report
.Failed
("Wrong result extended type (2x2 matrix)");