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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// test_registered.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 <cstdio> // remove
#include <fstream>
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{
using ::remove;
}
#endif
#include <boost/archive/archive_exception.hpp>
#include "test_tools.hpp"
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/type_info_implementation.hpp>
class polymorphic_base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & /* ar */, const unsigned int /* file_version */){
}
public:
virtual ~polymorphic_base(){};
};
class polymorphic_derived1 : public polymorphic_base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int /* file_version */){
ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(polymorphic_base);
}
};
class polymorphic_derived2 : public polymorphic_base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int /* file_version */){
ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(polymorphic_base);
}
};
// save derived polymorphic class
void save_derived(const char *testfile)
{
test_ostream os(testfile, TEST_STREAM_FLAGS);
test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
polymorphic_derived1 *rd1 = new polymorphic_derived1;
polymorphic_derived2 *rd2 = new polymorphic_derived2;
// registration IS necessary when serializing pointers of
// polymorphic classes
oa.register_type(static_cast<polymorphic_derived1 *>(NULL));
oa.register_type(static_cast<polymorphic_derived2 *>(NULL));
oa << BOOST_SERIALIZATION_NVP(rd1);
oa << BOOST_SERIALIZATION_NVP(rd2);
// the above opereration registers the derived classes as a side
// effect. Hence, instances can now be correctly serialized through
// a base class pointer.
polymorphic_base *rb1 = rd1;
polymorphic_base *rb2 = rd2;
oa << BOOST_SERIALIZATION_NVP(rb1);
oa << BOOST_SERIALIZATION_NVP(rb2);
delete rd1;
delete rd2;
}
// save derived polymorphic class
void load_derived(const char *testfile)
{
test_istream is(testfile, TEST_STREAM_FLAGS);
test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
polymorphic_derived1 *rd1 = NULL;
polymorphic_derived2 *rd2 = NULL;
// registration IS necessary when serializing pointers of
// polymorphic classes
ia.register_type(static_cast<polymorphic_derived1 *>(NULL));
ia.register_type(static_cast<polymorphic_derived2 *>(NULL));
ia >> BOOST_SERIALIZATION_NVP(rd1);
const boost::serialization::extended_type_info * p1;
p1 = & boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_const_instance();
BOOST_CHECK(NULL != p1);
const boost::serialization::extended_type_info * p2;
p2 = boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_const_instance().get_derived_extended_type_info(*rd1);
BOOST_CHECK(NULL != p2);
BOOST_CHECK_MESSAGE(p1 == p2, "restored pointer d1 not of correct type");
ia >> BOOST_SERIALIZATION_NVP(rd2);
BOOST_CHECK_MESSAGE(
& boost::serialization::type_info_implementation<polymorphic_derived2>
::type::get_const_instance()
==
boost::serialization::type_info_implementation<polymorphic_derived2>
::type::get_const_instance().get_derived_extended_type_info(*rd2),
"restored pointer d2 not of correct type"
);
polymorphic_base *rb1 = NULL;
polymorphic_base *rb2 = NULL;
// the above opereration registers the derived classes as a side
// effect. Hence, instances can now be correctly serialized through
// a base class pointer.
ia >> BOOST_SERIALIZATION_NVP(rb1);
BOOST_CHECK_MESSAGE(
rb1 == dynamic_cast<polymorphic_base *>(rd1),
"serialized pointers not correctly restored"
);
p1 = & boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_const_instance();
BOOST_CHECK(NULL != p1);
p2 = boost::serialization::type_info_implementation<polymorphic_base>
::type::get_const_instance().get_derived_extended_type_info(*rb1);
BOOST_CHECK(NULL != p2);
BOOST_CHECK_MESSAGE(p1 == p2, "restored pointer b1 not of correct type");
ia >> BOOST_SERIALIZATION_NVP(rb2);
BOOST_CHECK_MESSAGE(
rb2 == dynamic_cast<polymorphic_base *>(rd2),
"serialized pointers not correctly restored"
);
BOOST_CHECK_MESSAGE(
& boost::serialization::type_info_implementation<polymorphic_derived2>
::type::get_const_instance()
== boost::serialization::type_info_implementation<polymorphic_base>
::type::get_const_instance().get_derived_extended_type_info(*rb2),
"restored pointer b2 not of correct type"
);
delete rb1;
delete rb2;
}
// save registered polymorphic class
void save_registered(const char *testfile)
{
test_ostream os(testfile, TEST_STREAM_FLAGS);
test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
polymorphic_base *rb1 = new polymorphic_derived1;
polymorphic_base *rb2 = new polymorphic_derived2;
// registration (forward declaration) will permit correct serialization
// through a pointer to a base class
oa.register_type(static_cast<polymorphic_derived1 *>(NULL));
oa.register_type(static_cast<polymorphic_derived2 *>(NULL));
oa << BOOST_SERIALIZATION_NVP(rb1) << BOOST_SERIALIZATION_NVP(rb2);
delete rb1;
delete rb2;
}
// save registered polymorphic class
void load_registered(const char *testfile)
{
test_istream is(testfile, TEST_STREAM_FLAGS);
test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
polymorphic_base *rb1 = NULL;
polymorphic_base *rb2 = NULL;
// registration (forward declaration) will permit correct serialization
// through a pointer to a base class
ia.register_type(static_cast<polymorphic_derived1 *>(NULL));
ia.register_type(static_cast<polymorphic_derived2 *>(NULL));
ia >> BOOST_SERIALIZATION_NVP(rb1) >> BOOST_SERIALIZATION_NVP(rb2);
BOOST_CHECK_MESSAGE(
& boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_const_instance()
== boost::serialization::type_info_implementation<polymorphic_base>
::type::get_const_instance().get_derived_extended_type_info(*rb1),
"restored pointer b1 not of correct type"
);
BOOST_CHECK_MESSAGE(
& boost::serialization::type_info_implementation<polymorphic_derived2>
::type::get_const_instance()
== boost::serialization::type_info_implementation<polymorphic_base>
::type::get_const_instance().get_derived_extended_type_info(*rb2),
"restored pointer b2 not of correct type"
);
delete rb1;
delete rb2;
}
int
test_main( int /* argc */, char* /* argv */[] )
{
const char * testfile = boost::archive::tmpnam(NULL);
BOOST_REQUIRE(NULL != testfile);
save_derived(testfile);
load_derived(testfile);
save_registered(testfile);
load_registered(testfile);
std::remove(testfile);
return EXIT_SUCCESS;
}
// EOF
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