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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// test_diamond.cpp
// (C) Copyright 2002-2009 Vladimir Prus and Robert Ramey.
// 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)
// test of serialization library for diamond inheritence situations
#include <cstddef> // NULL
#include <fstream>
#include <iostream>
#include <boost/config.hpp>
#include <cstdio> // remove
#if defined(BOOST_NO_STDC_NAMESPACE)
namespace std{
using ::remove;
}
#endif
#include "test_tools.hpp"
#include <boost/serialization/map.hpp>
#include <boost/serialization/utility.hpp>
#include <boost/serialization/split_member.hpp>
#include <boost/serialization/tracking.hpp>
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/serialization/export.hpp>
int save_count = 0; // used to detect when base class is saved multiple times
int load_count = 0; // used to detect when base class is loaded multiple times
class base {
public:
base() : i(0) {}
base(int i) : i(i)
{
m[i] = "text";
}
template<class Archive>
void save(Archive &ar, const unsigned int /* file_version */) const
{
std::cout << "Saving base\n";
ar << BOOST_SERIALIZATION_NVP(i);
ar << BOOST_SERIALIZATION_NVP(m);
++save_count;
}
template<class Archive>
void load(Archive & ar, const unsigned int /* file_version */)
{
std::cout << "Restoring base\n";
ar >> BOOST_SERIALIZATION_NVP(i);
ar >> BOOST_SERIALIZATION_NVP(m);
++load_count;
}
BOOST_SERIALIZATION_SPLIT_MEMBER()
bool operator==(const base& another) const
{
return i == another.i && m == another.m;
}
// make polymorphic by marking at least one function virtual
virtual ~base() {};
private:
int i;
std::map<int, std::string> m;
};
// note: the default is for object tracking to be performed if and only
// if and object of the corresponding class is anywhere serialized
// through a pointer. In this example, that doesn't occur so
// by default, the shared base object wouldn't normally be tracked.
// This would leave to multiple save/load operation of the data in
// this shared base class. This wouldn't cause an error, but it would
// be a waste of time. So set the tracking behavior trait of the base
// class to always track serialized objects of that class. This permits
// the system to detect and elminate redundent save/load operations.
// (It is concievable that this might someday be detected automatically
// but for now, this is not done so we have to rely on the programmer
// to specify this trait)
BOOST_CLASS_TRACKING(base, track_always)
class derived1 : virtual public base {
public:
template<class Archive>
void save(Archive &ar, const unsigned int /* file_version */) const
{
std::cout << "Saving derived1\n";
ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
}
template<class Archive>
void load(Archive & ar, const unsigned int /* file_version */)
{
std::cout << "Restoring derived1\n";
ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
}
BOOST_SERIALIZATION_SPLIT_MEMBER()
};
class derived2 : virtual public base {
public:
template<class Archive>
void save(Archive &ar, const unsigned int /* file_version */) const
{
std::cout << "Saving derived2\n";
ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
}
template<class Archive>
void load(Archive & ar, const unsigned int /* file_version */)
{
std::cout << "Restoring derived2\n";
ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
}
BOOST_SERIALIZATION_SPLIT_MEMBER()
};
class final : public derived1, public derived2 {
public:
final() {}
final(int i) : base(i) {}
template<class Archive>
void save(Archive &ar, const unsigned int /* file_version */) const
{
std::cout << "Saving final\n";
ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived1);
ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived2);
}
template<class Archive>
void load(Archive & ar, const unsigned int /* file_version */)
{
std::cout << "Restoring final\n";
ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived1);
ar >> BOOST_SERIALIZATION_BASE_OBJECT_NVP(derived2);
}
BOOST_SERIALIZATION_SPLIT_MEMBER()
};
BOOST_CLASS_EXPORT(final)
int
test_main( int /* argc */, char* /* argv */[] )
{
const char * testfile = boost::archive::tmpnam(NULL);
BOOST_REQUIRE(NULL != testfile);
const final b(3);
{
test_ostream ofs(testfile, TEST_STREAM_FLAGS);
test_oarchive oa(ofs);
oa << boost::serialization::make_nvp("b", b);
}
final b2;
{
test_istream ifs(testfile, TEST_STREAM_FLAGS);
test_iarchive ia(ifs);
ia >> boost::serialization::make_nvp("b2", b2);
}
BOOST_CHECK(1 == save_count);
BOOST_CHECK(1 == load_count);
BOOST_CHECK(b2 == b);
std::remove(testfile);
// do the same test with pointers
testfile = boost::archive::tmpnam(NULL);
BOOST_REQUIRE(NULL != testfile);
save_count = 0;
load_count = 0;
const base* bp = new final( 3 );
{
test_ostream ofs(testfile);
test_oarchive oa(ofs);
oa << BOOST_SERIALIZATION_NVP(bp);
}
base* bp2;
{
test_istream ifs(testfile);
test_iarchive ia(ifs);
ia >> BOOST_SERIALIZATION_NVP(bp2);
}
BOOST_CHECK(1 == save_count);
BOOST_CHECK(1 == load_count);
BOOST_CHECK(*bp2 == *bp);
delete bp;
std::remove(testfile);
return EXIT_SUCCESS;
}
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