1/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
2// test_registered.cpp
3
4// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
5// Use, modification and distribution is subject to the Boost Software
6// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt)
8
9// should pass compilation and execution
10
11#include <cstddef> // NULL
12#include <cstdio> // remove
13#include <fstream>
14
15#include <boost/config.hpp>
16#if defined(BOOST_NO_STDC_NAMESPACE)
17namespace std{
18 using ::remove;
19}
20#endif
21
22#include <boost/archive/archive_exception.hpp>
23#include "test_tools.hpp"
24
25#include <boost/serialization/base_object.hpp>
26#include <boost/serialization/type_info_implementation.hpp>
27
28class polymorphic_base
29{
30 friend class boost::serialization::access;
31 template<class Archive>
32 void serialize(Archive & /* ar */, const unsigned int /* file_version */){
33 }
34public:
35 virtual ~polymorphic_base(){};
36};
37
38class polymorphic_derived1 : public polymorphic_base
39{
40 friend class boost::serialization::access;
41 template<class Archive>
42 void serialize(Archive &ar, const unsigned int /* file_version */){
43 ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(polymorphic_base);
44 }
45};
46
47class polymorphic_derived2 : public polymorphic_base
48{
49 friend class boost::serialization::access;
50 template<class Archive>
51 void serialize(Archive &ar, const unsigned int /* file_version */){
52 ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(polymorphic_base);
53 }
54};
55
56// save derived polymorphic class
57void save_derived(const char *testfile)
58{
59 test_ostream os(testfile, TEST_STREAM_FLAGS);
60 test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
61
62 polymorphic_derived1 *rd1 = new polymorphic_derived1;
63 polymorphic_derived2 *rd2 = new polymorphic_derived2;
64
65 // registration IS necessary when serializing pointers of
66 // polymorphic classes
67 oa.register_type(static_cast<polymorphic_derived1 *>(NULL));
68 oa.register_type(static_cast<polymorphic_derived2 *>(NULL));
69 oa << BOOST_SERIALIZATION_NVP(rd1);
70 oa << BOOST_SERIALIZATION_NVP(rd2);
71
72 // the above operation registers the derived classes as a side
73 // effect. Hence, instances can now be correctly serialized through
74 // a base class pointer.
75 polymorphic_base *rb1 = rd1;
76 polymorphic_base *rb2 = rd2;
77 oa << BOOST_SERIALIZATION_NVP(rb1);
78 oa << BOOST_SERIALIZATION_NVP(rb2);
79
80 delete rd1;
81 delete rd2;
82}
83
84// save derived polymorphic class
85void load_derived(const char *testfile)
86{
87 test_istream is(testfile, TEST_STREAM_FLAGS);
88 test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
89
90 polymorphic_derived1 *rd1 = NULL;
91 polymorphic_derived2 *rd2 = NULL;
92
93 // registration IS necessary when serializing pointers of
94 // polymorphic classes
95 ia.register_type(static_cast<polymorphic_derived1 *>(NULL));
96 ia.register_type(static_cast<polymorphic_derived2 *>(NULL));
97
98 ia >> BOOST_SERIALIZATION_NVP(rd1);
99
100 const boost::serialization::extended_type_info * p1;
101 p1 = & boost::serialization::type_info_implementation<polymorphic_derived1>
102 ::type::get_const_instance();
103
104 BOOST_CHECK(NULL != p1);
105
106 const boost::serialization::extended_type_info * p2;
107 p2 = boost::serialization::type_info_implementation<polymorphic_derived1>
108 ::type::get_const_instance().get_derived_extended_type_info(t: *rd1);
109
110 BOOST_CHECK(NULL != p2);
111
112 BOOST_CHECK_MESSAGE(p1 == p2, "restored pointer d1 not of correct type");
113
114 ia >> BOOST_SERIALIZATION_NVP(rd2);
115
116 BOOST_CHECK_MESSAGE(
117 & boost::serialization::type_info_implementation<polymorphic_derived2>
118 ::type::get_const_instance()
119 ==
120 boost::serialization::type_info_implementation<polymorphic_derived2>
121 ::type::get_const_instance().get_derived_extended_type_info(*rd2),
122 "restored pointer d2 not of correct type"
123 );
124
125 polymorphic_base *rb1 = NULL;
126 polymorphic_base *rb2 = NULL;
127
128 // the above operation registers the derived classes as a side
129 // effect. Hence, instances can now be correctly serialized through
130 // a base class pointer.
131 ia >> BOOST_SERIALIZATION_NVP(rb1);
132
133 BOOST_CHECK_MESSAGE(
134 rb1 == dynamic_cast<polymorphic_base *>(rd1),
135 "serialized pointers not correctly restored"
136 );
137
138 p1 = & boost::serialization::type_info_implementation<polymorphic_derived1>
139 ::type::get_const_instance();
140
141 BOOST_CHECK(NULL != p1);
142
143 p2 = boost::serialization::type_info_implementation<polymorphic_base>
144 ::type::get_const_instance().get_derived_extended_type_info(t: *rb1);
145
146 BOOST_CHECK(NULL != p2);
147
148 BOOST_CHECK_MESSAGE(p1 == p2, "restored pointer b1 not of correct type");
149
150 ia >> BOOST_SERIALIZATION_NVP(rb2);
151
152 BOOST_CHECK_MESSAGE(
153 rb2 == dynamic_cast<polymorphic_base *>(rd2),
154 "serialized pointers not correctly restored"
155 );
156
157 BOOST_CHECK_MESSAGE(
158 & boost::serialization::type_info_implementation<polymorphic_derived2>
159 ::type::get_const_instance()
160 == boost::serialization::type_info_implementation<polymorphic_base>
161 ::type::get_const_instance().get_derived_extended_type_info(*rb2),
162 "restored pointer b2 not of correct type"
163 );
164
165 delete rb1;
166 delete rb2;
167}
168
169// save registered polymorphic class
170void save_registered(const char *testfile)
171{
172 test_ostream os(testfile, TEST_STREAM_FLAGS);
173 test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
174
175 polymorphic_base *rb1 = new polymorphic_derived1;
176 polymorphic_base *rb2 = new polymorphic_derived2;
177
178 // registration (forward declaration) will permit correct serialization
179 // through a pointer to a base class
180 oa.register_type(static_cast<polymorphic_derived1 *>(NULL));
181 oa.register_type(static_cast<polymorphic_derived2 *>(NULL));
182 oa << BOOST_SERIALIZATION_NVP(rb1) << BOOST_SERIALIZATION_NVP(rb2);
183
184 delete rb1;
185 delete rb2;
186}
187
188// save registered polymorphic class
189void load_registered(const char *testfile)
190{
191 test_istream is(testfile, TEST_STREAM_FLAGS);
192 test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
193
194 polymorphic_base *rb1 = NULL;
195 polymorphic_base *rb2 = NULL;
196
197 // registration (forward declaration) will permit correct serialization
198 // through a pointer to a base class
199 ia.register_type(static_cast<polymorphic_derived1 *>(NULL));
200 ia.register_type(static_cast<polymorphic_derived2 *>(NULL));
201 ia >> BOOST_SERIALIZATION_NVP(rb1) >> BOOST_SERIALIZATION_NVP(rb2);
202
203 BOOST_CHECK_MESSAGE(
204 & boost::serialization::type_info_implementation<polymorphic_derived1>
205 ::type::get_const_instance()
206 == boost::serialization::type_info_implementation<polymorphic_base>
207 ::type::get_const_instance().get_derived_extended_type_info(*rb1),
208 "restored pointer b1 not of correct type"
209 );
210
211 BOOST_CHECK_MESSAGE(
212 & boost::serialization::type_info_implementation<polymorphic_derived2>
213 ::type::get_const_instance()
214 == boost::serialization::type_info_implementation<polymorphic_base>
215 ::type::get_const_instance().get_derived_extended_type_info(*rb2),
216 "restored pointer b2 not of correct type"
217 );
218
219 delete rb1;
220 delete rb2;
221}
222
223int
224test_main( int /* argc */, char* /* argv */[] )
225{
226 const char * testfile = boost::archive::tmpnam(NULL);
227
228 BOOST_REQUIRE(NULL != testfile);
229
230 save_derived(testfile);
231 load_derived(testfile);
232 save_registered(testfile);
233 load_registered(testfile);
234
235 std::remove(filename: testfile);
236 return EXIT_SUCCESS;
237}
238
239// EOF
240

source code of boost/libs/serialization/test/test_registered.cpp