1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// test_cyclic_ptrs.cpp
// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// should pass compilation and execution
#include <cstddef> // NULL
#include <fstream>
#include <cstdio> // remove
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{
using ::remove;
}
#endif
#include "test_tools.hpp"
#include <boost/detail/no_exceptions_support.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/version.hpp>
#include <boost/serialization/base_object.hpp>
#include "A.hpp"
#include "A.ipp"
///////////////////////////////////////////////////////
// class with a member which refers to itself
class J : public A
{
private:
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int /* file_version */){
ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(A);
ar & BOOST_SERIALIZATION_NVP(j);
}
public:
bool operator==(const J &rhs) const;
J *j;
J(J *_j) : j(_j) {}
J() : j(NULL){}
};
BOOST_CLASS_VERSION(J, 6)
bool J::operator==(const J &rhs) const
{
return static_cast<const A &>(*this) == static_cast<const A &>(rhs);
}
///////////////////////////////////////////////////////
// class with members that refer to each other
// this is an example of a class that, as written, cannot
// be serialized with this system. The problem is that the
// serialization of the first member - j1 , provokes serialization
// of those objects which it points to either directly or indirectly.
// When those objects are subsequently serialized, it is discovered
// that have already been serialized through pointers. This is
// detected by the system and an exception - pointer_conflict -
// is thrown. Permiting this to go undetected would result in the
// creation of multiple equal objects rather than the original
// structure.
class K
{
J j1;
J j2;
J j3;
friend class boost::serialization::access;
template<class Archive>
void serialize(
Archive &ar,
const unsigned int /* file_version */
){
ar & BOOST_SERIALIZATION_NVP(j1);
ar & BOOST_SERIALIZATION_NVP(j2);
ar & BOOST_SERIALIZATION_NVP(j3);
}
public:
bool operator==(const K &rhs) const;
K();
};
K::K()
: j1(&j2), j2(&j3), j3(&j1)
{
}
bool K::operator==(const K &rhs) const
{
return
j1.j == & j2
&& j2.j == & j3
&& j3.j == & j1
&& j1 == rhs.j1
&& j2 == rhs.j2
&& j3 == rhs.j3
;
}
int test_main( int /* argc */, char* /* argv */[] )
{
const char * testfile = boost::archive::tmpnam(NULL);
BOOST_REQUIRE(NULL != testfile);
K k;
boost::archive::archive_exception exception(
boost::archive::archive_exception::no_exception
);
{
test_ostream os(testfile, TEST_STREAM_FLAGS);
test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
BOOST_TRY {
oa << BOOST_SERIALIZATION_NVP(k);
}
BOOST_CATCH (boost::archive::archive_exception ae){
exception = ae;
}
BOOST_CATCH_END
BOOST_CHECK(
exception.code == boost::archive::archive_exception::pointer_conflict
);
}
// if exception wasn't invoked
if(exception.code == boost::archive::archive_exception::no_exception){
// try to read the archive
test_istream is(testfile, TEST_STREAM_FLAGS);
test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
exception = boost::archive::archive_exception(
boost::archive::archive_exception::no_exception
);
BOOST_TRY {
ia >> BOOST_SERIALIZATION_NVP(k);
}
BOOST_CATCH (boost::archive::archive_exception ae){
exception = ae;
}
BOOST_CATCH_END
BOOST_CHECK(
exception.code == boost::archive::archive_exception::pointer_conflict
);
}
std::remove(testfile);
return EXIT_SUCCESS;
}
// EOF
|
