| /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
| // 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 <boost/static_assert.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| |
| #include <boost/archive/archive_exception.hpp> |
| #include "../test/test_tools.hpp" |
| #include <boost/preprocessor/stringize.hpp> |
| // #include <boost/preprocessor/cat.hpp> |
| // the following fails with (only!) gcc 3.4 |
| // #include BOOST_PP_STRINGIZE(BOOST_PP_CAT(../test/,BOOST_ARCHIVE_TEST)) |
| // just copy over the files from the test directory |
| #include BOOST_PP_STRINGIZE(BOOST_ARCHIVE_TEST) |
| |
| #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> |
| |
| 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) |
| { |
| test_ostream os(testfile, TEST_STREAM_FLAGS); |
| test_oarchive oa(os, TEST_ARCHIVE_FLAGS); |
| |
| 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) |
| { |
| test_istream is(testfile, TEST_STREAM_FLAGS); |
| test_iarchive ia(is, TEST_ARCHIVE_FLAGS); |
| |
| polymorphic_derived1 *rd1 = NULL; |
| polymorphic_derived2 *rd2 = NULL; |
| |
| ia >> BOOST_SERIALIZATION_NVP(rd1); |
| |
| BOOST_CHECK_MESSAGE( |
| boost::serialization::type_info_implementation<polymorphic_derived1> |
| ::type::get_instance() |
| == boost::serialization::type_info_implementation<polymorphic_derived1> |
| ::type::get_derived_extended_type_info(*rd1), |
| "restored pointer d1 not of correct type" |
| ); |
| |
| ia >> BOOST_SERIALIZATION_NVP(rd2); |
| |
| BOOST_CHECK_MESSAGE( |
| boost::serialization::type_info_implementation<polymorphic_derived2> |
| ::type::get_instance() |
| == boost::serialization::type_info_implementation<polymorphic_derived2> |
| ::type::get_derived_extended_type_info(*rd2), |
| "restored pointer d2 not of correct type" |
| ); |
| |
| 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); |
| |
| BOOST_CHECK_MESSAGE( |
| rb1 == dynamic_cast<polymorphic_base *>(rd1), |
| "serialized pointers not correctly restored" |
| ); |
| |
| BOOST_CHECK_MESSAGE( |
| boost::serialization::type_info_implementation<polymorphic_derived1> |
| ::type::get_instance() |
| == boost::serialization::type_info_implementation<polymorphic_base> |
| ::type::get_derived_extended_type_info(*rb1), |
| "restored pointer b1 not of correct type" |
| ); |
| |
| ia >> BOOST_SERIALIZATION_NVP(rb2); |
| |
| BOOST_CHECK_MESSAGE( |
| rb2 == dynamic_cast<polymorphic_base *>(rd2), |
| "serialized pointers not correctly restored" |
| ); |
| |
| BOOST_CHECK_MESSAGE( |
| boost::serialization::type_info_implementation<polymorphic_derived2> |
| ::type::get_instance() |
| == boost::serialization::type_info_implementation<polymorphic_base> |
| ::type::get_derived_extended_type_info(*rb2), |
| "restored pointer b2 not of correct type" |
| ); |
| |
| delete rb1; |
| delete rb2; |
| } |
| |
| 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 |