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// 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 "test_tools.hpp"

//#include "boost/archive/polymorphic_text_oarchive.hpp"
//#include "boost/archive/polymorphic_text_iarchive.hpp"
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>

#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>
#include <boost/serialization/extended_type_info_typeid.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)
{
    std::ofstream os(testfile, std::ios::binary);
     boost::archive::text_oarchive oa(os);

    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)
{
    std::ifstream is(testfile, std::ios::binary);
    boost::archive::text_iarchive ia(is);

    polymorphic_derived1 *rd1 = NULL;
    polymorphic_derived2 *rd2 = NULL;

    ia >> BOOST_SERIALIZATION_NVP(rd1);

    ia >> BOOST_SERIALIZATION_NVP(rd2);

    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);

    ia >> BOOST_SERIALIZATION_NVP(rb2);

    delete rb1;
    delete rb2;
}

int main( int argc, char* argv[] )
{
    const char * testfile = "teste.xml";
    
    save_derived(testfile);
    load_derived(testfile);

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

// EOF