Mercurial > hg > CbC > CbC_gcc

comparison gcc/testsuite/ada/acats/tests/ca/ca11009.a @ 111:04ced10e8804

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children
comparison
equal deleted inserted replaced
68:561a7518be6b 111:04ced10e8804
1 -- CA11009.A
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 --
26 -- OBJECTIVE:
27 -- Check that a private child package can use entities declared in the
28 -- visible part of the parent unit of its parent unit.
29 --
30 -- TEST DESCRIPTION:
31 -- Declare a parent package containing types and objects used by the
32 -- system. Declare a public child package that provides a visible
33 -- interface to the system functionality.
34 -- Declare a private grandchild package that uses the visible grandparent
35 -- components to provide the actual functionality to the system.
36 --
37 -- The public child (parent of the private grandchild) uses the
38 -- functionality of its private child (grandchild package) to provide
39 -- the visible interface to operations of the system.
40 --
41 -- The test itself will utilize the visible interface provided in the
42 -- public child package to demonstrate a possible structure for
43 -- file management.
44 --
45 --
46 -- CHANGE HISTORY:
47 -- 06 Dec 94 SAIC ACVC 2.0
48 -- 15 Apr 96 SAIC ACVC 2.1: Added pragma Elaborate_body.
49 --
50 --!
51
52 package CA11009_0 is -- Package OS.
53 pragma Elaborate_Body (CA11009_0);
54
55 type File_Descriptor_Type is new Integer;
56 type File_Name_Type is new String (1 .. 11);
57 type Permission_Type is (None, User, System, Bypass);
58 type File_Mode_Type is (Read_Only, Write_Only, Read_Write);
59 type File_Status_Type is (Open, Closed);
60
61 Default_Descriptor : constant File_Descriptor_Type := 0;
62 Default_Permission : constant Permission_Type := None;
63 Default_Mode : constant File_Mode_Type := Read_Only;
64 Default_Status : constant File_Status_Type := Closed;
65 Default_Filename : constant File_Name_Type := " ";
66
67 Max_Files : constant File_Descriptor_Type := 10;
68 An_Ada_File_Name : constant File_Name_Type := "AdaFileName";
69 File_Counter : Integer := 0;
70
71 type File_Type is tagged
72 record
73 Descriptor : File_Descriptor_Type := Default_Descriptor;
74 Name : File_Name_Type := Default_Filename;
75 Acct_Access : Permission_Type := Default_Permission;
76 Mode : File_Mode_Type := Default_Mode;
77 Current_Status : File_Status_Type := Default_Status;
78 end record;
79
80 type File_Array_Type is array (1 .. Max_Files) of File_Type;
81
82 File_Table : File_Array_Type;
83
84 --
85
86 function Get_File_Name return File_Name_Type;
87
88 end CA11009_0; -- Package OS.
89
90 --=================================================================--
91
92 package body CA11009_0 is -- Package body OS.
93
94 function Get_File_Name return File_Name_Type is
95 begin
96 return (An_Ada_File_Name); -- Processing would be replace by a user
97 -- prompt in a functioning system.
98 end Get_File_Name;
99
100 end CA11009_0; -- Package body OS.
101
102 --=================================================================--
103
104 package CA11009_0.CA11009_1 is -- Child Package OS.File_Manager
105
106 -- This package simulates a visible interface for the Operating System.
107 -- The actual processing performed by this routine is encapsulated
108 -- in the routines of private child package Internals, which is "withed"
109 -- by the body of this package.
110
111 procedure Create_File (Mode : in File_Mode_Type;
112 File_Key : out File_Descriptor_Type);
113
114 end CA11009_0.CA11009_1; -- Child Package OS.File_Manager
115
116 --=================================================================--
117
118 -- Subprogram that performs the actual file operation is contained in a
119 -- private package so that it is not accessible to any client, and can be
120 -- modified/extended without requiring recompilation of the clients of the
121 -- parent (since this package is "withed" by the parent body only.)
122
123
124 -- Grandchild Package OS.File_Manager.Internals
125 private package CA11009_0.CA11009_1.CA11009_2 is
126
127 Initial_Permission : constant Permission_Type := User; -- Grandparent
128 Initial_Status : constant File_Status_Type := Open; -- literals.
129 Initial_Filename : constant File_Name_Type := -- Grandparent type.
130 Get_File_Name; -- Grandparent function.
131
132 function Create (Mode : File_Mode_Type)
133 return File_Descriptor_Type; -- Grandparent type.
134
135 end CA11009_0.CA11009_1.CA11009_2;
136 -- Grandchild Package OS.File_Manager.Internals
137
138 --=================================================================--
139
140 -- Grandchild Package body OS.File_Manager.Internals
141 package body CA11009_0.CA11009_1.CA11009_2 is
142
143 function Next_Available_File return File_Descriptor_Type is
144 begin
145 File_Counter := File_Counter + 1; -- Grandparent object.
146 return (File_Descriptor_Type(File_Counter));
147 end Next_Available_File;
148 -------------------------------------------------------------------------
149 function Create (Mode : File_Mode_Type) -- Grandparent literal.
150 return File_Descriptor_Type is
151 Number : File_Descriptor_Type; -- Grandparent type.
152 begin
153 Number := Next_Available_File;
154 File_Table(Number).Descriptor := Number; -- Grandparent object.
155 File_Table(Number).Name := Initial_Filename;
156 File_Table(Number).Mode := Mode; -- Parameter.
157 File_Table(Number).Acct_Access := Initial_Permission;
158 File_Table(Number).Current_Status := Initial_Status;
159 return (Number);
160 end Create;
161
162 end CA11009_0.CA11009_1.CA11009_2;
163 -- Grandchild Package body OS.File_Manager.Internals
164
165 --=================================================================--
166
167 -- "With" of a child package
168 -- by the parent body.
169 with CA11009_0.CA11009_1.CA11009_2; -- Grandchild OS.File_Manager.Internals
170
171 package body CA11009_0.CA11009_1 is -- Child Package body OS.File_Manager
172
173 package Internal renames CA11009_0.CA11009_1.CA11009_2;
174
175 -- These subprograms utilize calls to subprograms contained in a private
176 -- sibling to perform the actual processing.
177
178 procedure Create_File (Mode : in File_Mode_Type;
179 File_Key : out File_Descriptor_Type) is
180 begin
181 File_Key := Internal.Create (Mode);
182 end Create_File;
183
184 end CA11009_0.CA11009_1; -- Child Package body OS.File_Manager
185
186 --=================================================================--
187
188 with CA11009_0.CA11009_1; -- with Child Package OS.File_Manager
189 with Report;
190
191 procedure CA11009 is
192
193 package OS renames CA11009_0;
194 use OS;
195 package File_Manager renames CA11009_0.CA11009_1;
196
197 Data_Base_File_Key : File_Descriptor_Type := Default_Descriptor;
198 New_Mode : File_Mode_Type := Read_Write;
199
200 begin
201
202 -- This test indicates one approach to file management.
203 -- It is not intended to demonstrate full functionality, but rather
204 -- that the use of a private child package could provide a solution
205 -- to this type of situation.
206
207 Report.Test ("CA11009", "Check that a private child package can use " &
208 "entities declared in the visible part of the " &
209 "parent unit of its parent unit");
210
211 -- Check initial conditions of the first entry in the file table.
212 -- These are all default values provided in the declaration of the
213 -- type File_Type.
214
215 if (not (Data_Base_File_Key = Default_Descriptor)) and then
216 (((not (File_Table(1).Name = Default_Filename)) or
217 (File_Table(1).Descriptor /= Default_Descriptor)) or else
218 ((File_Table(1).Acct_Access /= Default_Permission) or
219 (not (File_Table(1).Mode = Default_Mode)) or
220 (File_Table(1).Current_Status /= Default_Status)))
221 then
222 Report.Failed ("Initial condition failure");
223 end if;
224
225 -- Create/initialize file using the capability provided by the visible
226 -- interface to the operating system, OS.File_Manager. The actual
227 -- processing routine is contained in the private grandchild package
228 -- Internals, which utilize the components from the grandparent package.
229
230 File_Manager.Create_File (New_Mode, Data_Base_File_Key);
231
232 -- Verify that the initial conditions of the file table component have
233 -- been properly modified by the initialization function.
234
235 if not ((File_Table(1).Descriptor = Data_Base_File_Key) and then
236 (File_Table(1).Name = An_Ada_File_Name) and then
237 (File_Table(1).Acct_Access = User) and then
238 not ((File_Table(1).Mode = Default_Mode) or else
239 (File_Table(1).Current_Status = Default_Status)))
240 then
241 Report.Failed ("File creation failure");
242 end if;
243
244 Report.Result;
245
246 end CA11009;