1-- C87B44A.ADA 2 3-- Grant of Unlimited Rights 4-- 5-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, 6-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 7-- unlimited rights in the software and documentation contained herein. 8-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making 9-- this public release, the Government intends to confer upon all 10-- recipients unlimited rights equal to those held by the Government. 11-- These rights include rights to use, duplicate, release or disclose the 12-- released technical data and computer software in whole or in part, in 13-- any manner and for any purpose whatsoever, and to have or permit others 14-- to do so. 15-- 16-- DISCLAIMER 17-- 18-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR 19-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 20-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE 21-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 22-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A 23-- PARTICULAR PURPOSE OF SAID MATERIAL. 24--* 25-- CHECK THAT OVERLOADING RESOLUTION USES THE RULE THAT: 26-- 27-- THE TYPE OF THE EXPRESSION IN A RETURN STATEMENT MUST MATCH THE 28-- EXPLICIT TYPEMARK IN THE RETURN CLAUSE OF THE FUNCTION'S 29-- SPECIFICATION. 30-- 31-- THE FOUR KINDS OF EXPRESSIONS TESTED HERE ARE: 32-- 33-- (A): A CALL TO AN OVERLOADED FUNCTION. 34-- (B): AN OVERLOADED OPERATOR SYMBOL. 35-- (C): AN OVERLOADED (INFIX) OPERATOR. 36-- (D): AN OVERLOADED ENUMERATION LITERAL. 37 38-- TRH 25 JUNE 82 39 40WITH REPORT; USE REPORT; 41 42PROCEDURE C87B44A IS 43 44 TYPE WHOLE IS NEW INTEGER RANGE 0..INTEGER'LAST; 45 TYPE CITRUS IS (LEMON, LIME, ORANGE); 46 TYPE HUE IS (RED, ORANGE, YELLOW); 47 48 FUNCTION F1 (X, Y : INTEGER) RETURN INTEGER IS 49 BEGIN 50 RETURN -1; 51 END F1; 52 53 FUNCTION "*" (X, Y : WHOLE) RETURN WHOLE IS 54 BEGIN 55 RETURN 0; 56 END "*"; 57 58 FUNCTION "*" (X, Y : INTEGER) RETURN HUE IS 59 BEGIN 60 RETURN ORANGE; 61 END "*"; 62 63 FUNCTION F1 (X, Y : INTEGER) RETURN CITRUS IS 64 BEGIN 65 RETURN ORANGE; 66 END F1; 67 68BEGIN 69 TEST ("C87B44A","OVERLOADED EXPRESSIONS IN RETURN STATEMENTS"); 70 DECLARE 71 72 FUNCTION F2 (X, Y : INTEGER) RETURN INTEGER IS 73 BEGIN 74 RETURN F1 (X, Y); 75 END F2; 76 77 FUNCTION F2 (X, Y : WHOLE) RETURN WHOLE IS 78 BEGIN 79 RETURN "*" (X, Y); 80 END F2; 81 82 FUNCTION F2 (X, Y : INTEGER) RETURN HUE IS 83 BEGIN 84 RETURN (X * Y); 85 END F2; 86 87 FUNCTION F2 (X, Y : INTEGER) RETURN CITRUS IS 88 BEGIN 89 RETURN ORANGE; 90 END F2; 91 92 93 BEGIN 94 IF INTEGER'(F2 (0, 0)) /= -1 THEN 95 FAILED ("(A): RESOLUTION INCORRECT - FUNCTION CALL"); 96 END IF; 97 98 IF WHOLE'(F2 (0, 0)) /= 0 THEN 99 FAILED ("(B): RESOLUTION INCORRECT - OPERATOR SYMBOL"); 100 END IF; 101 102 IF HUE'POS (F2 (0, 0)) /= 1 THEN 103 FAILED ("(C): RESOLUTION INCORRECT - INFIX OPERATOR"); 104 END IF; 105 106 IF CITRUS'POS (F2 (0, 0)) /= 2 THEN 107 FAILED ("(D): RESOLUTION INCORRECT - ENUMERATION LITERAL"); 108 END IF; 109 END; 110 111 RESULT; 112END C87B44A; 113