| -- C74211A.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 WITHIN THE PACKAGE SPECIFICATION AND BODY, ANY EXPLICIT |
| -- DECLARATIONS OF OPERATORS AND SUBPROGRAMS HIDE ANY OPERATIONS WHICH |
| -- ARE IMPLICITLY DECLARED AT THE POINT OF THE FULL DECLARATION, |
| -- REGARDLESS OF THE ORDER OF OCCURENCE OF THE DECLARATIONS. |
| |
| -- CHECK THAT IMPLICITLY DECLARED DERIVED SUBPROGRAMS HIDE IMPLICITLY |
| -- DECLARED PREDEFINED OPERATORS, REGARDLESS OF THE ORDER OF OCCURENCE |
| -- OF THE DECLARATIONS. |
| |
| -- DSJ 4/28/83 |
| -- JBG 9/23/83 |
| |
| -- A) EXPLICIT DECLARATION HIDES LATER IMPLICIT DECL OF PREDEFINED OP. |
| -- B) " " " LATER " " " DERIVED OP. |
| -- C) " " " EARLIER " " " PREDEFINED OP. |
| -- D) " " " EARLIER " " " DERIVED OP. |
| |
| WITH REPORT; |
| PROCEDURE C74211A IS |
| |
| USE REPORT; |
| |
| BEGIN |
| |
| TEST ("C74211A", "CHECK THAT HIDING OF IMPLICITLY DECLARED " & |
| "OPERATORS AND DERIVED SUBPROGRAMS IS DONE " & |
| "CORRECTLY REGARDLESS OF ORDER OF DECL'S"); |
| |
| DECLARE |
| |
| PACKAGE P1 IS |
| TYPE T1 IS RANGE 1 .. 50; |
| C1 : CONSTANT T1 := T1(IDENT_INT(2)); |
| D1 : CONSTANT T1 := C1 + C1; -- PREDEFINED "+" |
| FUNCTION "+" (L, R : T1) RETURN T1; -- C) FOR "+". |
| FUNCTION "-" (L, R : T1) RETURN T1; -- C) FOR "-". |
| FUNCTION "/" (L, R : T1) RETURN T1; |
| END P1; |
| |
| USE P1; |
| |
| PACKAGE BODY P1 IS |
| A,B : T1 := 3; |
| |
| FUNCTION "+" (L, R : T1) RETURN T1 IS |
| BEGIN |
| IF L = R THEN |
| RETURN 1; |
| ELSE RETURN 2; |
| END IF; |
| END "+"; |
| |
| FUNCTION "-" (L, R : T1) RETURN T1 IS |
| BEGIN |
| IF L = R THEN |
| RETURN 3; |
| ELSE RETURN 4; |
| END IF; |
| END "-"; |
| |
| FUNCTION "/" (L, R : T1) RETURN T1 IS |
| BEGIN |
| IF L = R THEN |
| RETURN T1(IDENT_INT(INTEGER(L))); |
| ELSE |
| RETURN T1(IDENT_INT(50)); |
| END IF; |
| END "/"; |
| |
| BEGIN |
| IF D1 /= 4 THEN |
| FAILED ("WRONG PREDEFINED OPERATION - '+' "); |
| END IF; |
| |
| IF D1 + C1 /= 2 THEN |
| FAILED ("IMPLICIT '+' NOT HIDDEN BY EXPLICIT '+'"); |
| END IF; |
| |
| IF A + B /= 1 THEN |
| FAILED ("IMPLICIT DECLARATION NOT HIDDEN " & |
| "BY EXPLICIT DECLARATION - '+' "); |
| END IF; |
| |
| IF A - B /= 3 THEN |
| FAILED ("IMPLICIT DECLARATION NOT HIDDEN " & |
| "BY EXPLICIT DECLARATION - '-' "); |
| END IF; |
| |
| IF A * B /= 9 THEN |
| FAILED ("WRONG PREDEFINED OPERATION - '*' "); |
| END IF; |
| |
| IF B / A /= T1(IDENT_INT(3)) THEN |
| FAILED ("NOT REDEFINED '/' "); |
| END IF; |
| END P1; |
| |
| PACKAGE P2 IS |
| TYPE T2 IS PRIVATE; |
| X , Y : CONSTANT T2; |
| FUNCTION "+" (L, R : T2) RETURN T2; -- B) |
| FUNCTION "*" (L, R : T2) RETURN T2; -- A) |
| PRIVATE |
| TYPE T2 IS NEW T1; -- B) +; A) * |
| Z : T2 := T2(IDENT_INT(3))/4; -- Z = 50 USING |
| -- DERIVED / |
| FUNCTION "/" (L, R : T2) RETURN T2; -- D) FOR / |
| X , Y : CONSTANT T2 := 3; |
| END P2; |
| |
| PACKAGE BODY P2 IS |
| FUNCTION "+" (L, R : T2) RETURN T2 IS |
| BEGIN |
| IF L = R THEN |
| RETURN T2(IDENT_INT(5)); |
| ELSE RETURN T2(IDENT_INT(6)); |
| END IF; |
| END "+"; |
| |
| FUNCTION "*" (L, R : T2) RETURN T2 IS |
| BEGIN |
| IF L = R THEN |
| RETURN T2(IDENT_INT(7)); |
| ELSE RETURN T2(IDENT_INT(8)); |
| END IF; |
| END "*"; |
| |
| FUNCTION "/" (L, R : T2) RETURN T2 IS |
| BEGIN |
| IF L = R THEN |
| RETURN T2(IDENT_INT(9)); |
| ELSE RETURN T2(IDENT_INT(10)); |
| END IF; |
| END "/"; |
| BEGIN |
| IF X + Y /= 5 THEN |
| FAILED ("DERIVED SUBPROGRAM NOT HIDDEN BY " & |
| "EXPLICIT DECLARATION - '+' "); |
| END IF; |
| |
| IF Y - X /= 3 THEN |
| FAILED ("PREDEFINED OPERATOR NOT HIDDEN BY " & |
| "DERIVED SUBPROGRAM - '-' "); |
| END IF; |
| |
| IF X * Y /= 7 THEN |
| FAILED ("PREDEFINED OPERATOR NOT HIDDEN BY " & |
| "EXPLICIT DECLARATION - '*' "); |
| END IF; |
| |
| IF Y / X /= T2(IDENT_INT(9)) THEN |
| FAILED ("DERIVED OPERATOR NOT HIDDEN BY " & |
| "EXPLICIT DECLARATION - '/' "); |
| END IF; |
| |
| IF Z /= 50 THEN |
| FAILED ("DERIVED OPERATOR HIDDEN PREMATURELY " & |
| " BY REDECLARED OPERATOR"); |
| END IF; |
| |
| END P2; |
| |
| BEGIN |
| |
| NULL; |
| |
| END; |
| |
| RESULT; |
| |
| END C74211A; |