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