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-- CC3016F.ADA
-- 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.
--*
-- OFFICE, 3E 114, THE PENTAGON, WASHINGTON DC 20301-3081.
-- OBJECTIVE:
-- CHECK THAT AN INSTANTIATED PACKAGE HAS THE PROPERTIES REQUIRED
-- OF A PACKAGE.
-- CHECK THAT IF THE PARENT TYPE IN A DERIVED TYPE DEFINITION IS
-- A GENERIC FORMAL TYPE, THE OPERATIONS DECLARED FOR THE DERIVED
-- TYPE IN THE TEMPLATE ARE DETERMINED BY THE DECLARATION OF THE
-- FORMAL TYPE. THE OPERATIONS DECLARED FOR DERIVED TYPE IN THE
-- INSTANCE ARE DETERMINED BY THE ACTUAL TYPE DENOTED BY THE FORMAL
-- PARAMETER. SEE AI-00398.
-- HISTORY:
-- DAS 8 OCT 90 INITIAL VERSION.
-- JRL 02/19/93 ADDED USE CLAUSES FOR INSTANCES TO ENSURE DIRECT
-- OPERATOR VISIBILITY. CHANGED NT4'LAST TO P4.NT4'LAST
-- IN ASSIGNMENT STATEMENT FOR P4.X IN EXAMPLE_4.
-- CORRECTED ABE ERRORS IN EXAMPLE_2 AND EXAMPLE_3.
-- CHANGED R3."+" FROM MULTIPLICATION TO SUBTRACTION TO
-- AVOID CONSTRAINT_ERROR.
WITH REPORT;
PROCEDURE CC3016F IS
BEGIN
REPORT.TEST ("CC3016F", "CHECK THAT IF THE PARENT TYPE IN A " &
"DERIVED TYPE DEFINITION IS A GENERIC " &
"FORMAL TYPE, THE OPERATIONS DECLARED " &
"FOR THE DERIVED TYPE IN THE TEMPLATE " &
"ARE DETERMINED BY THE DECLARATION OF " &
"THE FORMAL TYPE, AND THAT THE " &
"OPERATIONS DECLARED FOR THE DERIVED " &
"TYPE IN THE INSTANCE ARE DETERMINED BY " &
"THE ACTUAL TYPE DENOTED BY THE FORMAL " &
"PARAMETER (AI-00398)");
EXAMPLE_2:
DECLARE
GENERIC
TYPE PRIV IS PRIVATE;
PACKAGE GP2 IS
TYPE NT2 IS NEW PRIV;
END GP2;
PACKAGE R2 IS
TYPE T2 IS RANGE 1..10;
FUNCTION F RETURN T2;
END R2;
PACKAGE P2 IS NEW GP2 (PRIV => R2.T2);
USE P2;
XX1 : P2.NT2;
XX2 : P2.NT2;
XX3 : P2.NT2;
PACKAGE BODY R2 IS
FUNCTION F RETURN T2 IS
BEGIN
RETURN T2'LAST;
END F;
END R2;
BEGIN
XX1 := 5; -- IMPLICIT CONVERSION FROM
-- UNIVERSAL INTEGER TO P2.NT2
-- IN P2.
XX2 := XX1 + XX1; -- PREDEFINED "+" DECLARED FOR
-- P2.NT2.
XX3 := P2.F; -- FUNCTION F DERIVED WITH THE
-- INSTANCE.
END EXAMPLE_2;
EXAMPLE_3:
DECLARE
GENERIC
TYPE T3 IS RANGE <>;
PACKAGE GP3 IS
TYPE NT3 IS NEW T3;
X : NT3 := 5;
Y : NT3 := X + 3; -- USES PREDEFINED "+" EVEN IN
-- INSTANCES
END GP3;
PACKAGE R3 IS
TYPE S IS RANGE 1..10;
FUNCTION "+" (LEFT : IN S; RIGHT : IN S) RETURN S;
END R3;
PACKAGE P3 IS NEW GP3 ( T3 => R3.S );
USE P3;
Z : P3.NT3;
PACKAGE BODY R3 IS
FUNCTION "+" (LEFT : IN S; RIGHT : IN S) RETURN S IS
BEGIN -- IMPLEMENT AS SUBTRACTION, NOT ADDITION
RETURN LEFT - RIGHT;
END "+";
END R3;
BEGIN
Z := P3.X + 3; -- USES REDEFINED "+"
IF ( P3.Y /= P3.NT3'(8) ) THEN
REPORT.FAILED ("PREDEFINED ""+"" NOT USED TO COMPUTE " &
"P3.Y");
END IF;
IF (Z /= P3.NT3'(2) ) THEN
REPORT.FAILED ("REDEFINED ""+"" NOT USED TO COMPUTE Z");
END IF;
END EXAMPLE_3;
EXAMPLE_4:
DECLARE
GENERIC
TYPE T4 IS LIMITED PRIVATE;
PACKAGE GP4 IS
TYPE NT4 IS NEW T4;
X : NT4;
END GP4;
PACKAGE P4 IS NEW GP4 (BOOLEAN);
USE P4;
BEGIN
P4.X := P4.NT4'LAST;
IF ( P4.X OR (NOT P4.X) ) THEN
REPORT.COMMENT ("P4.X CORRECTLY HAS A BOOLEAN TYPE");
END IF;
END EXAMPLE_4;
EXAMPLE_5:
DECLARE
GENERIC
TYPE T5 (D : POSITIVE) IS PRIVATE;
PACKAGE GP5 IS
TYPE NT5 IS NEW T5;
X : NT5 (D => 5);
Y : POSITIVE := X.D; -- REFERS TO DISCRIMINANT OF NT5
END GP5;
TYPE REC (A : POSITIVE) IS
RECORD
D : POSITIVE := 7;
END RECORD;
PACKAGE P5 IS NEW GP5 (T5 => REC);
-- P5.Y INITIALIZED WITH VALUE USING COMPONENT SELECTION
-- OPERATION FOR THE DISCRIMINANT, I.E. FOR PARENT TYPE
-- T5 WHICH DENOTES REC.
W1 : POSITIVE := P5.X.D; -- VALUE IS 7
W2 : POSITIVE := P5.X.A; -- VALUE IS 5
W3 : POSITIVE := P5.Y; -- VALUE IS 5;
BEGIN
IF ( ( W1 /= 7 ) OR ( W2 /= 5 ) OR (W3 /= 5 ) ) THEN
REPORT.FAILED ("INCORRECT COMPONENT SELECTION");
END IF;
END EXAMPLE_5;
REPORT.RESULT;
END CC3016F;
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