cc3016i.ada

来自「用于进行gcc测试」· ADA 代码 · 共 79 行

-- CC3016I.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.
--*
-- OBJECTIVE:
--   CHECK THAT AN INSTANTIATED PACKAGE HAS THE PROPERTIES REQUIRED
--   OF A PACKAGE.

--   CHECK THAT IF THE DESIGNATED TYPE OF AN ACCESS TYPE IS A GENERIC
--   FORMAL TYPE, OR IS A TYPE DERIVED DIRECTLY OR INDIRECTLY FROM A
--   GENERIC FORMAL TYPE, THE OPERATIONS DECLARED FOR THE ACCESS TYPE
--   IN THE TEMPLATE ARE DETERMINED BY THE DECLARATION OF THE FORMAL
--   TYPE.  THE OPERATIONS DECLARED FOR ACCESS 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.


WITH REPORT; USE REPORT;

PROCEDURE CC3016I IS
BEGIN
     TEST("CC3016I", "CHECK THAT AN INSTANTIATED PACKAGE HAS THE " &
          "PROPERTIES REQUIRED OF A PACKAGE.");

EXAMPLE_5A:
     DECLARE
          GENERIC
               TYPE T5A (D : POSITIVE) IS PRIVATE;
          PACKAGE GP5A IS
               TYPE NT5A IS NEW T5A;
               X : NT5A (D => 5);
               Y : POSITIVE := X.D;  -- REFERS TO DISCRIMINANT OF NT5A
          END GP5A;

          TYPE REC (A : POSITIVE) IS
               RECORD
                    D : POSITIVE := 7;
               END RECORD;
          PACKAGE P5A IS NEW GP5A (T5A => REC);
               -- P5A.Y INITIALIZED WITH VALUE USING COMPONENT SELECTION
               -- OPERATION FOR THE DISCRIMINANT, I.E. FOR PARENT TYPE
               -- T5A WHICH DENOTES REC.

          W1 : POSITIVE := P5A.X.D;    -- VALUE IS 7
          W2 : POSITIVE := P5A.X.A;    -- VALUE IS 5
          W3 : POSITIVE := P5A.Y;      -- VALUE IS 5;
     BEGIN
          IF ( ( W1 /= 7 ) OR ( W2 /= 5 ) OR  (W3 /= 5 ) ) THEN
               FAILED ("INCORRECT COMPONENT SELECTION - ACCESS");
          END IF;
     END EXAMPLE_5A;

     RESULT;
 
END CC3016I;