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-- C67005B.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.

--*

-- CHECK THAT IF EQUALITY IS REDEFINED FOR A SCALAR TYPE, CASE

-- STATEMENTS STILL USE THE PREDEFINED EQUALITY OPERATION.

-- JBG 9/28/83

WITH REPORT; USE REPORT;

PROCEDURE C67005B IS

     GENERIC

          TYPE LP IS LIMITED PRIVATE;

          WITH FUNCTION EQUAL (L, R : LP) RETURN BOOLEAN;

     PACKAGE EQUALITY_OPERATOR IS

          FUNCTION "=" (L, R : LP) RETURN BOOLEAN;

     END EQUALITY_OPERATOR;

     PACKAGE BODY EQUALITY_OPERATOR IS

          FUNCTION "=" (L, R : LP) RETURN BOOLEAN IS

          BEGIN

               RETURN EQUAL(L, R);

          END "=";

     END EQUALITY_OPERATOR;

BEGIN

     TEST ("C67005B", "CHECK THAT REDEFINING EQUALITY FOR A " &

                      "SCALAR TYPE DOES NOT AFFECT CASE STATEMENTS");

     DECLARE

          TYPE MY IS NEW INTEGER;

          CHECK : MY;

          VAR : INTEGER RANGE 1..3 := 3;

          PACKAGE INTEGER_EQUALS IS

               FUNCTION EQUAL (L, R : INTEGER) RETURN BOOLEAN;

               PACKAGE INTEGER_EQUAL IS NEW EQUALITY_OPERATOR

                         (INTEGER, EQUAL);

          END INTEGER_EQUALS;

          FUNCTION "=" (L, R : INTEGER) RETURN BOOLEAN RENAMES

                       INTEGER_EQUALS.INTEGER_EQUAL."=";

          PACKAGE BODY INTEGER_EQUALS IS

               FUNCTION EQUAL (L, R : INTEGER) RETURN BOOLEAN IS

               BEGIN

                    RETURN FALSE;

               END EQUAL;

          END INTEGER_EQUALS;

     BEGIN

          IF VAR = 3 THEN

               FAILED ("DID NOT USE REDEFINED '=' - 1");

          END IF;

          IF VAR /= 3 THEN

               NULL;

          ELSE

               FAILED ("DID NOT USE REDEFINED '/=' - 1");

          END IF;

          IF VAR = IDENT_INT(3) THEN

               FAILED ("DID NOT USE REDEFINED '=' - 2");

          END IF;

          IF VAR /= IDENT_INT(3) THEN

               NULL;

          ELSE

               FAILED ("DID NOT USE REDEFINED '/=' - 2");

          END IF;

          CHECK := MY(IDENT_INT(0));

          IF CHECK /= 0 THEN

               FAILED ("USING WRONG EQUALITY FOR DERIVED TYPE");

          END IF;

          CASE VAR IS

               WHEN 1..3 => CHECK := MY(IDENT_INT(1));

               WHEN OTHERS => NULL;

          END CASE;

          IF CHECK /= 1 THEN

               FAILED ("DID NOT USE PREDEFINED EQUALS IN CASE - 1");

          END IF;

          CASE IDENT_INT(VAR) IS

               WHEN 1 => CHECK := 4;

               WHEN 2 => CHECK := 5;

               WHEN 3 => CHECK := 6;

               WHEN OTHERS => CHECK := 7;

          END CASE;

          IF CHECK /= 6 THEN

               FAILED ("DID NOT USE PREDEFINED EQUALS IN CASE - 2");

          END IF;

     END;

     RESULT;

END C67005B;