149 lines
4.5 KiB
C++
149 lines
4.5 KiB
C++
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// test_derived.cpp
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// should pass compilation and execution
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#include <cstddef> // NULL
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#include <fstream>
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#include <cstdio> // remove
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#include <boost/config.hpp>
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#if defined(BOOST_NO_STDC_NAMESPACE)
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namespace std{
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using ::remove;
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}
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#endif
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#include <boost/archive/archive_exception.hpp>
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#include "test_tools.hpp"
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#include <boost/serialization/base_object.hpp>
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#include <boost/serialization/type_info_implementation.hpp>
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class base
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{
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friend class boost::serialization::access;
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template<class Archive>
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void serialize(Archive & /* ar */, const unsigned int /* file_version */){
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}
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public:
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virtual ~base(){};
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};
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class derived1 : public base
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{
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friend class boost::serialization::access;
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template<class Archive>
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void serialize(Archive &ar, const unsigned int /* file_version */){
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ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
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}
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};
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class derived2 : public base
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{
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friend class boost::serialization::access;
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template<class Archive>
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void serialize(Archive &ar, const unsigned int /* file_version */){
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ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);
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}
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};
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// save non-polymorphic classes through a base class pointer
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void save_derived(const char *testfile)
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{
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test_ostream os(testfile, TEST_STREAM_FLAGS);
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test_oarchive oa(os, TEST_ARCHIVE_FLAGS);
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// registration not necessary when serializing the most derived pointer
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derived1 *d1 = new derived1;
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derived2 *d2 = new derived2;
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oa << BOOST_SERIALIZATION_NVP(d1) << BOOST_SERIALIZATION_NVP(d2);
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// upcasting non-polymorphic pointers may not lead to the expected
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// result. In the current type id system
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base *b1 = d1;
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base *b2 = d2;
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// Warning, the current type id system does not yield true
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// type id for non-polymorphic types
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const boost::serialization::extended_type_info & this_type
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= boost::serialization::type_info_implementation<base>::type
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::get_const_instance();
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// retrieve the true type of the object pointed to
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const boost::serialization::extended_type_info & true_type
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= * boost::serialization::type_info_implementation<base>::type
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::get_const_instance().get_derived_extended_type_info(*b1);
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BOOST_WARN_MESSAGE(
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!(this_type == true_type),
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"current type id system does not support non-polymorphic types"
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);
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oa << BOOST_SERIALIZATION_NVP(b1);
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oa << BOOST_SERIALIZATION_NVP(b2);
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delete d1;
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delete d2;
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}
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// save non-polymorphic classes through a base class pointer
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void load_derived(const char *testfile)
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{
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test_istream is(testfile, TEST_STREAM_FLAGS);
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test_iarchive ia(is, TEST_ARCHIVE_FLAGS);
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// registration not necessary when serializing the most derived pointer
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derived1 *d1 = NULL;
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derived2 *d2 = NULL;
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ia >> BOOST_SERIALIZATION_NVP(d1) >> BOOST_SERIALIZATION_NVP(d2);
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// upcasting non-polymorphic pointers may not lead to the expected
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// result. In the current type id system
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base *b1 = NULL;
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base *b2 = NULL;
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// note: this will produce incorrect results for non-polymorphic classes
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ia >> BOOST_SERIALIZATION_NVP(b1);
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ia >> BOOST_SERIALIZATION_NVP(b2);
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// Warning, the current type id system does not yield true
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// type id for non-polymorphic types
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const boost::serialization::extended_type_info & this_type
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= boost::serialization::type_info_implementation<base>::type
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::get_const_instance();
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// retrieve the true type of the object pointed to
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const boost::serialization::extended_type_info & true_type
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= * boost::serialization::type_info_implementation<base>::type
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::get_const_instance().get_derived_extended_type_info(*b1);
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BOOST_WARN_MESSAGE(
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! (this_type == true_type),
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"current type id system does fails for non-polymorphic types"
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);
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BOOST_CHECK(b1 == static_cast<base *>(d1));
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BOOST_CHECK(b2 == static_cast<base *>(d2));
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delete d1;
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delete d2;
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}
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int
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test_main( int /* argc */, char* /* argv */[] )
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{
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const char * testfile = boost::archive::tmpnam(NULL);
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BOOST_REQUIRE(NULL != testfile);
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save_derived(testfile);
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load_derived(testfile);
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std::remove(testfile);
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return EXIT_SUCCESS;
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}
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// EOF
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