Boost C++ Libraries

libs/serialization/test/test_dll_exported.cpp

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// test_dll_exported.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

// This is an overly complex test.  The purpose of this test is to
// demostrate and test the ability to serialize a hiarchy of class
// through a base class pointer even though those class might be
// implemente in different dlls and use different extended type info
// systems.
//
// polymorphic_ base is locally declared and defined.  It use the
// "no_rtti" extended type info system.

// polymorphic_derived1 is locally declared and defined.  It uses
// the default "type_id" extended type info system

// polymorphic_derived2 is declared in polymorphic_derived.hpp
// and defined in dll_polymorphic_derived2.  It uses the typeid
// system.

#include <cstddef> // NULL
#include <fstream>

#include <cstdio> // remove
#include <boost/config.hpp>
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{ 
    using ::remove;
}
#endif

// for now, only test with simple text archive
#define BOOST_ARCHIVE_TEST text_archive.hpp
#include "test_tools.hpp"

#include <boost/archive/archive_exception.hpp>

#include <boost/serialization/base_object.hpp>
#include <boost/serialization/export.hpp>
#include <boost/serialization/access.hpp>

#include "polymorphic_base.hpp"

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);
    }
    virtual const char * get_key() const { 
        return "polymorphic_derived1";
    }
public:
    virtual ~polymorphic_derived1(){}
};

BOOST_CLASS_EXPORT(polymorphic_derived1)

// MWerks users can do this to make their code work
BOOST_SERIALIZATION_MWERKS_BASE_AND_DERIVED(polymorphic_base, polymorphic_derived1)

#define POLYMORPHIC_DERIVED_IMPORT
#include "polymorphic_derived2.hpp"

// save exported polymorphic class
void save_exported(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;
    polymorphic_derived2 *rd21 = new polymorphic_derived2;

    // export will permit correct serialization
    // through a pointer to a base class
    oa << BOOST_SERIALIZATION_NVP(rb1);
    oa << BOOST_SERIALIZATION_NVP(rb2);
    oa << BOOST_SERIALIZATION_NVP(rd21);

    delete rb1;
    delete rb2;
}

// save exported polymorphic class
void load_exported(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;
    polymorphic_derived2 *rd21 = NULL;

    // export will permit correct serialization
    // through a pointer to a base class
    ia >> BOOST_SERIALIZATION_NVP(rb1);
    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"
    );
    ia >> BOOST_SERIALIZATION_NVP(rb2);
    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"
    );
    ia >> BOOST_SERIALIZATION_NVP(rd21);
    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(*rd21),
        "restored pointer d2 not of correct type"
    );
    delete rb1;
    delete rb2;
    delete rd21;
}

int
test_main( int /* argc */, char* /* argv */[] )
{
    const char * testfile = boost::archive::tmpnam(NULL);
    BOOST_REQUIRE(NULL != testfile);

    save_exported(testfile);
    load_exported(testfile);
    std::remove(testfile);
    return EXIT_SUCCESS;
}

// EOF