| /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
| // test_derived.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 |
| |
| #include <cstddef> // NULL |
| #include <fstream> |
| |
| #include <cstdio> // remove |
| #include <boost/config.hpp> |
| #if defined(BOOST_NO_STDC_NAMESPACE) |
| namespace std{ |
| using ::remove; |
| } |
| #endif |
| |
| #include <boost/archive/archive_exception.hpp> |
| #include "test_tools.hpp" |
| |
| #include <boost/serialization/base_object.hpp> |
| #include <boost/serialization/type_info_implementation.hpp> |
| |
| class base |
| { |
| friend class boost::serialization::access; |
| template<class Archive> |
| void serialize(Archive & /* ar */, const unsigned int /* file_version */){ |
| } |
| protected: |
| virtual ~base(){}; |
| }; |
| |
| class derived1 : public base |
| { |
| friend class boost::serialization::access; |
| template<class Archive> |
| void serialize(Archive &ar, const unsigned int /* file_version */){ |
| ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
| } |
| }; |
| |
| class derived2 : public base |
| { |
| friend class boost::serialization::access; |
| template<class Archive> |
| void serialize(Archive &ar, const unsigned int /* file_version */){ |
| ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); |
| } |
| }; |
| |
| // save non-polymorphic classes through a base class pointer |
| void save_derived(const char *testfile) |
| { |
| test_ostream os(testfile, TEST_STREAM_FLAGS); |
| test_oarchive oa(os, TEST_ARCHIVE_FLAGS); |
| |
| // registration not necessary when serializing the most derived pointer |
| derived1 *d1 = new derived1; |
| derived2 *d2 = new derived2; |
| oa << BOOST_SERIALIZATION_NVP(d1) << BOOST_SERIALIZATION_NVP(d2); |
| |
| // upcasting non-polymorphic pointers may not lead to the expected |
| // result. In the current type id system |
| base *b1 = d1; |
| base *b2 = d2; |
| |
| // Warning, the current type id system does not yield true |
| // type id for non-polymorphic types |
| const boost::serialization::extended_type_info & this_type |
| = boost::serialization::type_info_implementation<base>::type |
| ::get_const_instance(); |
| // retrieve the true type of the object pointed to |
| const boost::serialization::extended_type_info & true_type |
| = * boost::serialization::type_info_implementation<base>::type |
| ::get_const_instance().get_derived_extended_type_info(*b1); |
| |
| BOOST_WARN_MESSAGE( |
| !(this_type == true_type), |
| "current type id system does not support non-polymorphic types" |
| ); |
| |
| oa << BOOST_SERIALIZATION_NVP(b1); |
| oa << BOOST_SERIALIZATION_NVP(b2); |
| |
| delete d1; |
| delete d2; |
| } |
| |
| // save non-polymorphic classes through a base class pointer |
| void load_derived(const char *testfile) |
| { |
| test_istream is(testfile, TEST_STREAM_FLAGS); |
| test_iarchive ia(is, TEST_ARCHIVE_FLAGS); |
| |
| // registration not necessary when serializing the most derived pointer |
| derived1 *d1 = NULL; |
| derived2 *d2 = NULL; |
| ia >> BOOST_SERIALIZATION_NVP(d1) >> BOOST_SERIALIZATION_NVP(d2); |
| |
| // upcasting non-polymorphic pointers may not lead to the expected |
| // result. In the current type id system |
| base *b1 = NULL; |
| base *b2 = NULL; |
| |
| // note: this will produce incorrect results for non-polymorphic classes |
| ia >> BOOST_SERIALIZATION_NVP(b1); |
| ia >> BOOST_SERIALIZATION_NVP(b2); |
| |
| // Warning, the current type id system does not yield true |
| // type id for non-polymorphic types |
| const boost::serialization::extended_type_info & this_type |
| = boost::serialization::type_info_implementation<base>::type |
| ::get_const_instance(); |
| // retrieve the true type of the object pointed to |
| const boost::serialization::extended_type_info & true_type |
| = * boost::serialization::type_info_implementation<base>::type |
| ::get_const_instance().get_derived_extended_type_info(*b1); |
| |
| BOOST_WARN_MESSAGE( |
| ! (this_type == true_type), |
| "current type id system does fails for non-polymorphic types" |
| ); |
| |
| BOOST_CHECK(b1 == static_cast<base *>(d1)); |
| BOOST_CHECK(b2 == static_cast<base *>(d2)); |
| |
| delete d1; |
| delete d2; |
| } |
| |
| 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 |