| -- C87B44A.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 OVERLOADING RESOLUTION USES THE RULE THAT: |
| -- |
| -- THE TYPE OF THE EXPRESSION IN A RETURN STATEMENT MUST MATCH THE |
| -- EXPLICIT TYPEMARK IN THE RETURN CLAUSE OF THE FUNCTION'S |
| -- SPECIFICATION. |
| -- |
| -- THE FOUR KINDS OF EXPRESSIONS TESTED HERE ARE: |
| -- |
| -- (A): A CALL TO AN OVERLOADED FUNCTION. |
| -- (B): AN OVERLOADED OPERATOR SYMBOL. |
| -- (C): AN OVERLOADED (INFIX) OPERATOR. |
| -- (D): AN OVERLOADED ENUMERATION LITERAL. |
| |
| -- TRH 25 JUNE 82 |
| |
| WITH REPORT; USE REPORT; |
| |
| PROCEDURE C87B44A IS |
| |
| TYPE WHOLE IS NEW INTEGER RANGE 0..INTEGER'LAST; |
| TYPE CITRUS IS (LEMON, LIME, ORANGE); |
| TYPE HUE IS (RED, ORANGE, YELLOW); |
| |
| FUNCTION F1 (X, Y : INTEGER) RETURN INTEGER IS |
| BEGIN |
| RETURN -1; |
| END F1; |
| |
| FUNCTION "*" (X, Y : WHOLE) RETURN WHOLE IS |
| BEGIN |
| RETURN 0; |
| END "*"; |
| |
| FUNCTION "*" (X, Y : INTEGER) RETURN HUE IS |
| BEGIN |
| RETURN ORANGE; |
| END "*"; |
| |
| FUNCTION F1 (X, Y : INTEGER) RETURN CITRUS IS |
| BEGIN |
| RETURN ORANGE; |
| END F1; |
| |
| BEGIN |
| TEST ("C87B44A","OVERLOADED EXPRESSIONS IN RETURN STATEMENTS"); |
| DECLARE |
| |
| FUNCTION F2 (X, Y : INTEGER) RETURN INTEGER IS |
| BEGIN |
| RETURN F1 (X, Y); |
| END F2; |
| |
| FUNCTION F2 (X, Y : WHOLE) RETURN WHOLE IS |
| BEGIN |
| RETURN "*" (X, Y); |
| END F2; |
| |
| FUNCTION F2 (X, Y : INTEGER) RETURN HUE IS |
| BEGIN |
| RETURN (X * Y); |
| END F2; |
| |
| FUNCTION F2 (X, Y : INTEGER) RETURN CITRUS IS |
| BEGIN |
| RETURN ORANGE; |
| END F2; |
| |
| |
| BEGIN |
| IF INTEGER'(F2 (0, 0)) /= -1 THEN |
| FAILED ("(A): RESOLUTION INCORRECT - FUNCTION CALL"); |
| END IF; |
| |
| IF WHOLE'(F2 (0, 0)) /= 0 THEN |
| FAILED ("(B): RESOLUTION INCORRECT - OPERATOR SYMBOL"); |
| END IF; |
| |
| IF HUE'POS (F2 (0, 0)) /= 1 THEN |
| FAILED ("(C): RESOLUTION INCORRECT - INFIX OPERATOR"); |
| END IF; |
| |
| IF CITRUS'POS (F2 (0, 0)) /= 2 THEN |
| FAILED ("(D): RESOLUTION INCORRECT - ENUMERATION LITERAL"); |
| END IF; |
| END; |
| |
| RESULT; |
| END C87B44A; |