1-- C97302A.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 WHENEVER AN INDEX IS PRESENT IN A TIMED_ENTRY_CALL, IT
26-- IS EVALUATED BEFORE ANY PARAMETER ASSOCIATIONS ARE EVALUATED, AND
27-- PARAMETER ASSOCIATIONS ARE EVALUATED BEFORE THE DELAY EXPRESSION.
28-- THEN A RENDEZVOUS IS ATTEMPTED.
29
30-- RJW 3/31/86
31
32with Impdef;
33WITH REPORT; USE REPORT;
34WITH CALENDAR; USE CALENDAR;
35PROCEDURE C97302A IS
36
37     INDEX_COMPUTED  :  BOOLEAN  :=  FALSE;
38     PARAM_COMPUTED  :  BOOLEAN  :=  FALSE;
39     DELAY_COMPUTED  :  BOOLEAN  :=  FALSE;
40BEGIN
41
42     TEST ("C97302A", "CHECK THAT WHENEVER AN INDEX IS PRESENT IN " &
43                      "A TIMED_ENTRY_CALL, IT IS EVALUATED BEFORE " &
44                      "ANY PARAMETER ASSOCIATIONS ARE EVALUATED, " &
45                      "AND PARAMETER ASSOCIATIONS ARE EVALUATED " &
46                      "BEFORE THE DELAY EXPRESSION" );
47     DECLARE
48
49          WAIT_TIME : DURATION := 3.0 * Impdef.One_Second;
50
51          TYPE SHORT IS RANGE 10 .. 20;
52
53          TASK  T  IS
54               ENTRY  DO_IT_NOW_OR_WAIT
55                                      ( SHORT )
56                                      ( DID_YOU_DO_IT : IN BOOLEAN );
57               ENTRY  KEEP_ALIVE;
58          END  T;
59
60          TASK BODY  T  IS
61          BEGIN
62               ACCEPT  KEEP_ALIVE;
63          END  T;
64
65          FUNCTION  F1 (X : SHORT) RETURN SHORT IS
66          BEGIN
67               INDEX_COMPUTED  :=  TRUE;
68               RETURN (15);
69          END  F1;
70
71          FUNCTION  F2 RETURN BOOLEAN  IS
72          BEGIN
73               IF INDEX_COMPUTED THEN
74                    NULL;
75               ELSE
76                    FAILED ( "INDEX NOT EVALUATED FIRST" );
77               END IF;
78               PARAM_COMPUTED  :=  TRUE;
79               RETURN (FALSE);
80          END  F2;
81
82          FUNCTION F3 RETURN DURATION IS
83          BEGIN
84               IF PARAM_COMPUTED THEN
85                    NULL;
86               ELSE
87                    FAILED ( "PARAMETERS NOT EVALUATED BEFORE DELAY " &
88                             "EXPRESSION" );
89               END IF;
90               DELAY_COMPUTED := TRUE;
91               RETURN (WAIT_TIME);
92          END;
93     BEGIN
94
95          SELECT
96               T.DO_IT_NOW_OR_WAIT
97                                      ( F1 (15) )
98                                      ( NOT F2 );
99               FAILED ("RENDEZVOUS OCCURRED");
100          OR
101               DELAY F3;
102          END SELECT;
103
104          T.KEEP_ALIVE;
105
106     END;   -- END OF BLOCK CONTAINING THE ENTRY CALLS.
107
108     IF  DELAY_COMPUTED  THEN
109          NULL;
110     ELSE
111          FAILED( "DELAY EXPRESSION NOT EVALUATED" );
112     END IF;
113
114     RESULT;
115
116END  C97302A;
117