1-- C87B45A.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-- FOR A DEFAULT SUBPROGRAM PARAMETER, THE TYPE OF THE INITIALIZATION
28-- EXPRESSION MUST MATCH THE PARAMETERS'S EXPLICIT TYPEMARK.
29--
30-- THE FOUR KINDS OF EXPRESSIONS TESTED HERE ARE:
31--
32--    (A): A CALL TO AN OVERLOADED FUNCTION.
33--    (B): AN OVERLOADED OPERATOR SYMBOL.
34--    (C): AN OVERLOADED (INFIX) OPERATOR.
35--    (D): AN OVERLOADED ENUMERATION LITERAL.
36
37-- TRH  24 JUNE 82
38
39WITH REPORT; USE REPORT;
40
41PROCEDURE C87B45A IS
42
43     TYPE WHOLE  IS NEW INTEGER RANGE 0..INTEGER'LAST;
44     TYPE CITRUS IS (LEMON, LIME, ORANGE);
45     TYPE HUE    IS (RED, ORANGE, YELLOW);
46
47     FUNCTION F1 (X, Y : INTEGER) RETURN INTEGER IS
48     BEGIN
49          RETURN -1;
50     END F1;
51
52     FUNCTION F1 (X, Y : WHOLE) RETURN WHOLE IS
53     BEGIN
54          RETURN 0;
55     END F1;
56
57     FUNCTION F1 (X, Y : INTEGER) RETURN HUE IS
58     BEGIN
59          RETURN ORANGE;
60     END F1;
61
62     FUNCTION F1 (X, Y : INTEGER) RETURN CITRUS IS
63     BEGIN
64          RETURN ORANGE;
65     END F1;
66
67BEGIN
68     TEST ("C87B45A","OVERLOADED INITIALIZATION EXPRESSIONS" &
69           " IN DEFAULT SUBPROGRAM PARAMETERS");
70     DECLARE
71
72          FUNCTION "/" (X, Y : INTEGER) RETURN INTEGER
73               RENAMES F1;
74
75          FUNCTION "/" (X, Y : WHOLE)   RETURN WHOLE
76               RENAMES F1;
77
78          FUNCTION "/" (X, Y : INTEGER) RETURN HUE
79               RENAMES F1;
80
81          FUNCTION "/" (X, Y : INTEGER) RETURN CITRUS
82               RENAMES F1;
83
84          PROCEDURE P1 (I1 : INTEGER := F1  (0, 0);
85                        W1 : WHOLE   := F1  (0, 0);
86                        C1 : CITRUS  := F1  (0, 0);
87                        H1 : HUE     := F1  (0, 0);
88                        I2 : INTEGER := "/" (0, 0);
89                        W2 : WHOLE   := "/" (0, 0);
90                        C2 : CITRUS  := "/" (0, 0);
91                        H2 : HUE     := "/" (0, 0);
92                        I3 : INTEGER := (0 / 0);
93                        W3 : WHOLE   := (0 / 0);
94                        C3 : CITRUS  := (0 / 0);
95                        H3 : HUE     := (0 / 0);
96                        C4 : CITRUS  := ORANGE;
97                        H4 : HUE     := ORANGE)  IS
98          BEGIN
99               IF I1              /= -1 OR W1           /= 0 OR
100                  CITRUS'POS (C1) /=  2 OR HUE'POS (H1) /= 1 THEN
101                  FAILED ("(A): RESOLUTION INCORRECT - FUNCTION CALL");
102               END IF;
103
104               IF I2              /= -1 OR W2           /= 0 OR
105                  CITRUS'POS (C2) /=  2 OR HUE'POS (H2) /= 1 THEN
106                  FAILED ("(B): RESOLUTION INCORRECT " &
107                          "- OPERATOR SYMBOL");
108               END IF;
109
110               IF I3              /= -1 OR W3           /= 0 OR
111                  CITRUS'POS (C3) /=  2 OR HUE'POS (H3) /= 1 THEN
112                  FAILED ("(C): RESOLUTION INCORRECT - INFIX OPERATOR");
113               END IF;
114
115               IF CITRUS'POS (C4) /=  2 OR HUE'POS (H4) /= 1 THEN
116                  FAILED ("(D): RESOLUTION INCORRECT - ENUMERATION " &
117                          "LITERAL");
118               END IF;
119          END P1;
120
121     BEGIN
122          P1;
123     END;
124
125     RESULT;
126END C87B45A;
127