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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// test_no_rtti.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)
// note: this program tests the inter-operability of different
// extended typeinfo systems. In this example, one class is
// identified using the default RTTI while the other uses a custom
// system based on the export key.
//
// As this program uses RTTI for one of the types, the test will fail
// on a system for which RTTI is not enabled or not existent.
#include <fstream>
#include <cstdio> // remove
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{
using ::remove;
}
#endif
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/archive/archive_exception.hpp>
#include "../test/test_tools.hpp"
#include <boost/preprocessor/stringize.hpp>
// #include <boost/preprocessor/cat.hpp>
// the following fails with (only!) gcc 3.4
// #include BOOST_PP_STRINGIZE(BOOST_PP_CAT(../test/,BOOST_ARCHIVE_TEST))
// just copy over the files from the test directory
#include BOOST_PP_STRINGIZE(BOOST_ARCHIVE_TEST)
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/export.hpp>
#include <boost/serialization/type_info_implementation.hpp>
#include <boost/serialization/extended_type_info_no_rtti.hpp>
class polymorphic_base
{
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & /* ar */, const unsigned int /* file_version */){
}
public:
virtual const char * get_key() const = 0;
virtual ~polymorphic_base(){};
};
BOOST_IS_ABSTRACT(polymorphic_base)
BOOST_CLASS_TYPE_INFO(
polymorphic_base,
extended_type_info_no_rtti<polymorphic_base>
)
// note: types which use ...no_rtti MUST be exported
BOOST_CLASS_EXPORT(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);
}
public:
virtual const char * get_key() const ;
};
BOOST_CLASS_TYPE_INFO(
polymorphic_derived1,
extended_type_info_no_rtti<polymorphic_derived1>
)
BOOST_CLASS_EXPORT(polymorphic_derived1)
const char * polymorphic_derived1::get_key() const {
const boost::serialization::extended_type_info *eti
= boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_instance();
return eti->get_key();
}
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);
}
public:
virtual const char * get_key() const ;
};
// note the mixing of type_info systems is supported.
BOOST_CLASS_TYPE_INFO(
polymorphic_derived2,
boost::serialization::extended_type_info_typeid<polymorphic_derived2>
)
BOOST_CLASS_EXPORT(polymorphic_derived2)
const char * polymorphic_derived2::get_key() const {
// use the exported key as the identifier
const boost::serialization::extended_type_info *eti
= boost::serialization::type_info_implementation<polymorphic_derived2>
::type::get_instance();
return eti->get_key();
}
// 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;
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;
ia >> BOOST_SERIALIZATION_NVP(rd1);
BOOST_CHECK_MESSAGE(
boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_instance()
== boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_derived_extended_type_info(*rd1),
"restored pointer d1 not of correct type"
);
ia >> BOOST_SERIALIZATION_NVP(rd2);
BOOST_CHECK_MESSAGE(
boost::serialization::type_info_implementation<polymorphic_derived2>
::type::get_instance()
== boost::serialization::type_info_implementation<polymorphic_derived2>
::type::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"
);
BOOST_CHECK_MESSAGE(
boost::serialization::type_info_implementation<polymorphic_derived1>
::type::get_instance()
== boost::serialization::type_info_implementation<polymorphic_base>
::type::get_derived_extended_type_info(*rb1),
"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_instance()
== boost::serialization::type_info_implementation<polymorphic_base>
::type::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);
std::remove(testfile);
return EXIT_SUCCESS;
}
// EOF
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