1-- C97202A.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 THE INDEX IS EVALUATED BEFORE THE ENTRY PARAMETER AND BOTH
26-- THE INDEX AND THE ENTRY PARAMETER ARE EVALUATED BEFORE THE RENDEZVOUS
27-- IS ATTEMPED.
28
29-- RM 4/05/82
30-- TBN 2/3/86     ADDED A CHECK THAT INDEX IS EVALUATED BEFORE THE ENTRY
31--                PARAMETER AND FIXED APPROPRIATE COMMENTS.
32
33WITH REPORT; USE REPORT;
34PROCEDURE C97202A IS
35
36     INDEX_COMPUTED   :  BOOLEAN  :=  FALSE ;
37     FORMAL_COMPUTED  :  BOOLEAN  :=  FALSE ;
38
39BEGIN
40
41     TEST ("C97202A", "CHECK THAT THE INDEX IS EVALUATED BEFORE THE " &
42                      "ENTRY PARAMETER AND BOTH INDEX AND THE ENTRY " &
43                      "PARAMETER ARE EVALUATED BEFORE THE RENDEZVOUS " &
44                      "IS ATTEMPTED");
45
46     DECLARE
47          SUBTYPE  SHORT  IS  INTEGER RANGE 10..20 ;
48
49          TASK  T  IS
50               ENTRY  DO_IT_NOW_ORELSE (SHORT)
51                                       (DID_YOU_DO_IT : IN BOOLEAN);
52               ENTRY  KEEP_ALIVE ;
53          END  T ;
54
55          TASK BODY  T  IS
56          BEGIN
57               ACCEPT  KEEP_ALIVE ;
58          END  T ;
59
60          FUNCTION  F1 (X:INTEGER) RETURN INTEGER  IS
61          BEGIN
62               IF FORMAL_COMPUTED THEN
63                    FAILED ("INDEX WAS NOT EVALUATED FIRST");
64               END IF;
65               INDEX_COMPUTED  :=  TRUE ;
66               RETURN (7) ;
67          END  F1 ;
68
69          FUNCTION  F2 (X:INTEGER) RETURN BOOLEAN  IS
70          BEGIN
71               FORMAL_COMPUTED  :=  TRUE ;
72               RETURN (FALSE) ;
73          END  F2 ;
74
75     BEGIN
76          SELECT
77               T.DO_IT_NOW_ORELSE ( 6 + F1(7)  )
78                                  ( NOT(F2(7)) ) ;
79          ELSE
80               NULL ;
81          END SELECT;
82
83          T.KEEP_ALIVE ;
84     END;   -- END OF BLOCK CONTAINING THE ENTRY CALLS.
85
86     IF  INDEX_COMPUTED  THEN
87          NULL ;
88     ELSE
89          FAILED( "ENTRY INDEX WAS NOT COMPUTED" );
90     END IF;
91
92     IF  FORMAL_COMPUTED  THEN
93          NULL ;
94     ELSE
95          FAILED( "ENTRY PARAMETER WAS NOT COMPUTED" );
96     END IF;
97
98     RESULT;
99
100END  C97202A ;
101