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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// test_derived.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 <boost/archive/archive_exception.hpp>
#include "test_tools.hpp"
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/type_info_implementation.hpp>
class base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & /* ar */, const unsigned int /* file_version */){
}
public:
virtual ~base(){};
};
class derived1 : public base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int /* file_version */){
ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
}
};
class derived2 : public base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int /* file_version */){
ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
}
};
// save non-polymorphic classes through a base class pointer
void save_derived(const char *testfile)
{
test_ostream os(testfile, TEST_STREAM_FLAGS);
test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
// registration not necessary when serializing the most derived pointer
derived1 *d1 = new derived1;
derived2 *d2 = new derived2;
oa << BOOST_SERIALIZATION_NVP(d1) << BOOST_SERIALIZATION_NVP(d2);
// upcasting non-polymorphic pointers may not lead to the expected
// result. In the current type id system
base *b1 = d1;
base *b2 = d2;
// Warning, the current type id system does not yield true
// type id for non-polymorphic types
const boost::serialization::extended_type_info & this_type
= boost::serialization::type_info_implementation<base>::type
::get_const_instance();
// retrieve the true type of the object pointed to
const boost::serialization::extended_type_info & true_type
= * boost::serialization::type_info_implementation<base>::type
::get_const_instance().get_derived_extended_type_info(*b1);
BOOST_WARN_MESSAGE(
!(this_type == true_type),
"current type id system does not support non-polymorphic types"
);
oa << BOOST_SERIALIZATION_NVP(b1);
oa << BOOST_SERIALIZATION_NVP(b2);
delete d1;
delete d2;
}
// save non-polymorphic classes through a base class pointer
void load_derived(const char *testfile)
{
test_istream is(testfile, TEST_STREAM_FLAGS);
test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
// registration not necessary when serializing the most derived pointer
derived1 *d1 = NULL;
derived2 *d2 = NULL;
ia >> BOOST_SERIALIZATION_NVP(d1) >> BOOST_SERIALIZATION_NVP(d2);
// upcasting non-polymorphic pointers may not lead to the expected
// result. In the current type id system
base *b1 = NULL;
base *b2 = NULL;
// note: this will produce incorrect results for non-polymorphic classes
ia >> BOOST_SERIALIZATION_NVP(b1);
ia >> BOOST_SERIALIZATION_NVP(b2);
// Warning, the current type id system does not yield true
// type id for non-polymorphic types
const boost::serialization::extended_type_info & this_type
= boost::serialization::type_info_implementation<base>::type
::get_const_instance();
// retrieve the true type of the object pointed to
const boost::serialization::extended_type_info & true_type
= * boost::serialization::type_info_implementation<base>::type
::get_const_instance().get_derived_extended_type_info(*b1);
BOOST_WARN_MESSAGE(
! (this_type == true_type),
"current type id system does fails for non-polymorphic types"
);
BOOST_CHECK(b1 == static_cast<base *>(d1));
BOOST_CHECK(b2 == static_cast<base *>(d2));
delete d1;
delete d2;
}
int
test_main( int /* argc */, char* /* argv */[] )
{
const char * testfile = boost::archive::tmpnam(NULL);
BOOST_REQUIRE(NULL != testfile);
save_derived(testfile);
load_derived(testfile);
std::remove(testfile);
return EXIT_SUCCESS;
}
// EOF
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