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-- 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;