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-- CE2201G.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 READ, WRITE, AND END_OF_FILE ARE SUPPORTED

--      FOR SEQUENTIAL FILES WITH VARIANT RECORDS WITH DEFAULT

--      DISCRIMINANTS.

-- APPLICABILITY CRITERIA:

--     THIS TEST IS APPLICABLE ONLY TO IMPLEMENTATIONS WHICH SUPPORT

--     SEQUENTIAL FILES.

-- HISTORY:

--     TBN 05/15/86

--     TBN 11/04/86  REVISED TEST TO OUTPUT A NOT_APPLICABLE

--                   RESULT WHEN FILES ARE NOT SUPPORTED.

--     JLH 08/03/87  REMOVED DEPENDENCE OF RESET AND CREATED EXTERNAL

--                   FILES RATHER THAN TEMPORARY FILES.

WITH REPORT; USE REPORT;

WITH SEQUENTIAL_IO;

PROCEDURE CE2201G IS

BEGIN

     TEST ("CE2201G", "CHECK THAT READ, WRITE, AND END_OF_FILE " &

                      "ARE SUPPORTED FOR SEQUENTIAL FILES WITH " &

                      "UNCONSTRAINED VARIANT RECORD TYPES WITH " &

                      "DEFAULT DISCRIMINANTS.");

     DECLARE

          TYPE VAR_REC (DISCR : BOOLEAN := TRUE) IS

               RECORD

                    CASE DISCR IS

                         WHEN TRUE =>

                              A : INTEGER;

                         WHEN FALSE =>

                              B : STRING (1..20);

                    END CASE;

               END RECORD;

          PACKAGE SEQ_VAR_REC IS NEW SEQUENTIAL_IO (VAR_REC);

          USE SEQ_VAR_REC;

          FILE_VAR_REC : FILE_TYPE;

          INCOMPLETE : EXCEPTION;

          ITEM_TRUE : VAR_REC(TRUE);     -- CONSTRAINED

          ITEM      : VAR_REC;           -- UNCONSTRAINED

     BEGIN

          BEGIN

               CREATE (FILE_VAR_REC, OUT_FILE, LEGAL_FILE_NAME);

          EXCEPTION

               WHEN USE_ERROR | NAME_ERROR =>

                    NOT_APPLICABLE ("CREATE OF SEQUENTIAL FILE WITH " &

                                    "MODE OUT_FILE NOT SUPPORTED");

                    RAISE INCOMPLETE;

          END;

          WRITE (FILE_VAR_REC, (TRUE, -5));

          WRITE (FILE_VAR_REC, (FALSE, (1..20 => 'B')));

          CLOSE (FILE_VAR_REC);

          BEGIN

               OPEN (FILE_VAR_REC, IN_FILE, LEGAL_FILE_NAME);

          EXCEPTION

               WHEN USE_ERROR =>

                    NOT_APPLICABLE ("OPEN OF SEQUENTIAL FILE WITH " &

                                    "MODE IN_FILE NOT SUPPORTED");

                    RAISE INCOMPLETE;

          END;

          IF END_OF_FILE (FILE_VAR_REC) THEN

               FAILED ("WRONG END_OF_FILE VALUE FOR RECORD" &

                       "WITH DISCRIMINANT");

          END IF;

          BEGIN

               READ (FILE_VAR_REC, ITEM_TRUE);

               IF ITEM_TRUE /= (TRUE, IDENT_INT(-5)) THEN

                    FAILED ("READ WRONG VALUE - 1");

               END IF;

               IF END_OF_FILE (FILE_VAR_REC) THEN

                    FAILED ("PREMATURE END OF FILE");

               END IF;

               READ (FILE_VAR_REC, ITEM);

               IF ITEM /= (FALSE, (1..IDENT_INT(20) => 'B')) THEN

                    FAILED ("READ WRONG VALUE - 2");

               END IF;

               IF NOT END_OF_FILE(FILE_VAR_REC) THEN

                    FAILED ("NOT AT END OF FILE");

               END IF;

          END;

          BEGIN

               DELETE (FILE_VAR_REC);

          EXCEPTION

               WHEN USE_ERROR =>

                    NULL;

          END;

     EXCEPTION

          WHEN INCOMPLETE =>

               NULL;

     END;

     RESULT;

END CE2201G;