1-- C38102E.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 AN INCOMPLETE TYPE CAN BE REDECLARED AS A DERIVED GENERIC
26-- FORMAL TYPE.
27
28-- AH     8/15/86
29-- PWN 01/31/95  REMOVED INCONSISTENCIES WITH ADA 9X.
30-- DNT 11/28/95  CHANGED TO FLAG1 := F4.
31
32WITH REPORT; USE REPORT;
33PROCEDURE C38102E IS
34     TYPE RAINBOW IS (RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, VIOLET);
35     TYPE T_FLOAT IS DIGITS 5 RANGE -4.0 .. 4.0;
36     TYPE T_FIXED IS DELTA 0.01 RANGE 0.0 .. 1.5;
37     SUBTYPE P1 IS INTEGER;
38     TYPE P2 IS RANGE 0 .. 10;
39     TYPE P3 IS ARRAY (P2) OF INTEGER;
40     TYPE P4 IS ARRAY (P2, P2) OF INTEGER;
41
42     F1, F2 : BOOLEAN;
43
44     GENERIC
45          TYPE G1 IS (<>);
46          TYPE G2 IS RANGE <>;
47     FUNCTION G_DISCRETE RETURN BOOLEAN;
48
49     FUNCTION G_DISCRETE RETURN BOOLEAN IS
50          TYPE INC1;
51          TYPE INC2;
52          TYPE F1 IS NEW G1;
53          TYPE INC1 IS NEW G1;
54          TYPE INC2 IS NEW G2;
55
56          OBJ1_0 : INC1;
57          OBJ1_1 : INC1;
58          OBJ2_0 : INC2;
59          OBJ2_1 : INC2;
60          OBJ3 : F1;
61
62          RESULT_VALUE1 : BOOLEAN := FALSE;
63          RESULT_VALUE2 : BOOLEAN := FALSE;
64     BEGIN
65          OBJ3 := F1'LAST;
66          OBJ3 := F1'PRED(OBJ3);
67          IF INC1(OBJ3) = INC1'PRED(INC1'LAST) THEN
68               RESULT_VALUE1 := TRUE;
69          END IF;
70          OBJ2_0 := INC2'FIRST;
71          OBJ2_1 := INC2'LAST;
72          IF (OBJ2_0 + OBJ2_1) = (INC2'SUCC(OBJ2_0) +
73                                  INC2'PRED(OBJ2_1)) THEN
74               RESULT_VALUE2 := TRUE;
75          END IF;
76
77          RETURN (RESULT_VALUE1 AND RESULT_VALUE2);
78     END G_DISCRETE;
79
80     GENERIC
81          TYPE G3 IS DIGITS <>;
82          TYPE G4 IS DELTA <>;
83     PROCEDURE REALS (FLAG1, FLAG2 : OUT BOOLEAN);
84
85     PROCEDURE REALS (FLAG1, FLAG2 : OUT BOOLEAN) IS
86          F1, F2, F3, F4, F5, F6, F7, F8 : BOOLEAN;
87          TYPE INC3;
88          TYPE INC4;
89          TYPE P1 IS NEW G3;
90          TYPE P2 IS NEW G4;
91          TYPE INC3 IS NEW G3;
92          TYPE INC4 IS NEW G4;
93     BEGIN
94          F4 := P1'LAST = P1(INC3'LAST) AND P1'FIRST = P1(INC3'FIRST);
95
96          F5 := P2'FORE = INC4'FORE;
97          F6 := P2'AFT = INC4'AFT;
98          F7 := ABS(P2'LAST - P2'FIRST) = P2(ABS(INC4'LAST -
99                                                 INC4'FIRST));
100          F8 := INC4(P2'LAST / P2'LAST) = INC4(INC4'LAST / INC4'LAST);
101
102          FLAG1 := F4;
103          FLAG2 := F5 AND F6 AND F7 AND F8;
104     END REALS;
105
106     GENERIC
107          TYPE ITEM IS PRIVATE;
108          TYPE INDEX IS RANGE <>;
109          TYPE G5 IS ARRAY (INDEX) OF ITEM;
110          TYPE G6 IS ARRAY (INDEX, INDEX) OF ITEM;
111     PACKAGE DIMENSIONS IS
112          TYPE INC5;
113          TYPE INC6;
114          TYPE D1 IS NEW G5;
115          TYPE D2 IS NEW G6;
116          TYPE INC5 IS NEW G5;
117          TYPE INC6 IS NEW G6;
118          FUNCTION CHECK RETURN BOOLEAN;
119     END DIMENSIONS;
120
121     PACKAGE BODY DIMENSIONS IS
122          FUNCTION CHECK RETURN BOOLEAN IS
123               A1 : INC5;
124               A2 : INC6;
125               DIM1 : D1;
126               DIM2 : D2;
127               F1, F2 : BOOLEAN;
128          BEGIN
129               F1 := A1(INDEX'FIRST)'SIZE = DIM1(INDEX'FIRST)'SIZE;
130               F2 := A2(INDEX'FIRST, INDEX'LAST)'SIZE =
131                     DIM2(INDEX'FIRST, INDEX'LAST)'SIZE;
132
133               RETURN (F1 AND F2);
134          END CHECK;
135     END DIMENSIONS;
136
137     PROCEDURE PROC IS NEW REALS (G3 => T_FLOAT, G4 => T_FIXED);
138     FUNCTION DISCRETE IS NEW G_DISCRETE (G1 => RAINBOW, G2 => P2);
139     PACKAGE PKG IS NEW DIMENSIONS (ITEM => P1, INDEX => P2, G5 => P3,
140                                    G6 => P4);
141
142     USE PKG;
143BEGIN
144     TEST ("C38102E", "INCOMPLETE TYPES CAN BE DERIVED GENERIC " &
145                      "FORMAL TYPES");
146
147     IF NOT DISCRETE THEN
148          FAILED ("INTEGER AND ENUMERATED TYPES NOT DERIVED");
149     END IF;
150
151     PROC (F1, F2);
152     IF (NOT F1) THEN
153          FAILED ("FLOAT TYPES NOT DERIVED");
154     END IF;
155     IF (NOT F2) THEN
156          FAILED ("FIXED TYPES NOT DERIVED");
157     END IF;
158
159     IF NOT CHECK THEN
160          FAILED ("ONE AND TWO DIMENSIONAL ARRAY TYPES NOT DERIVED");
161     END IF;
162
163     RESULT;
164END C38102E;
165