| 1 | #include <cassert> | 
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| 2 | #include <fstream> | 
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| 3 |  | 
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| 4 | #include <boost/serialization/serialization.hpp> | 
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| 5 | #include <boost/archive/xml_oarchive.hpp> | 
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| 6 | #include <boost/archive/xml_iarchive.hpp> | 
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| 7 | #include <boost/serialization/export.hpp> | 
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| 8 |  | 
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| 9 | #include <boost/serialization/nvp.hpp> | 
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| 10 |  | 
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| 11 | struct VBase; | 
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| 12 |  | 
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| 13 | struct VBase { | 
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| 14 | virtual ~VBase() {} | 
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| 15 | friend class boost::serialization::access; | 
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| 16 | template<class Archive> | 
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| 17 | void serialize(Archive &/*ar*/, const unsigned int /*version*/) { | 
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| 18 | } | 
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| 19 | }; | 
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| 20 |  | 
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| 21 | BOOST_CLASS_TRACKING(VBase, boost::serialization::track_always) | 
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| 22 |  | 
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| 23 |  | 
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| 24 | struct Mid1 : virtual VBase { | 
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| 25 | friend class boost::serialization::access; | 
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| 26 | template<class Archive> | 
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| 27 | void serialize(Archive &ar, const unsigned int /*version*/) { | 
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| 28 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(VBase); | 
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| 29 | } | 
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| 30 | }; | 
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| 31 |  | 
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| 32 | struct Mid2 : virtual VBase { | 
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| 33 | friend class boost::serialization::access; | 
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| 34 | template<class Archive> | 
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| 35 | void serialize(Archive &ar, const unsigned int /*version*/) { | 
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| 36 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(VBase); | 
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| 37 | } | 
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| 38 | }; | 
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| 39 |  | 
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| 40 | struct Sub1 : Mid1, Mid2 { | 
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| 41 | friend class boost::serialization::access; | 
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| 42 | template<class Archive> | 
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| 43 | void serialize(Archive &ar, const unsigned int /*version*/) { | 
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| 44 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Mid1); | 
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| 45 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Mid2); | 
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| 46 | } | 
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| 47 | }; | 
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| 48 |  | 
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| 49 | struct Sub2 : Mid1, Mid2 { | 
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| 50 | friend class boost::serialization::access; | 
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| 51 | template<class Archive> | 
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| 52 | void serialize(Archive &ar, const unsigned int /*version*/) { | 
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| 53 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Mid1); | 
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| 54 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Mid2); | 
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| 55 | } | 
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| 56 | }; | 
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| 57 |  | 
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| 58 | struct Target : Sub2 { | 
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| 59 | friend class boost::serialization::access; | 
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| 60 | template<class Archive> | 
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| 61 | void serialize(Archive &ar, const unsigned int /*version*/) { | 
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| 62 | ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Sub2); | 
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| 63 | } | 
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| 64 | }; | 
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| 65 |  | 
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| 66 | #if 0 | 
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| 67 | // OK | 
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| 68 | BOOST_CLASS_EXPORT(Target) | 
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| 69 | BOOST_CLASS_EXPORT(Sub1) | 
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| 70 | #else | 
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| 71 | // NG | 
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| 72 | BOOST_CLASS_EXPORT(Sub1) | 
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| 73 | BOOST_CLASS_EXPORT(Target) | 
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| 74 | #endif | 
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| 75 |  | 
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| 76 | int main() | 
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| 77 | { | 
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| 78 | // Serialize pTarget via VBase pointer. | 
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| 79 | { | 
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| 80 | std::ofstream ofs("outtarget.xml"); | 
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| 81 | boost::archive::xml_oarchive oa(ofs); | 
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| 82 | assert(ofs); | 
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| 83 | Target* pTarget = new Target; | 
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| 84 | VBase * pVBase = pTarget; | 
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| 85 | oa << boost::serialization::make_nvp("pVBase", pVBase); | 
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| 86 | } | 
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| 87 | { | 
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| 88 | std::ifstream ifs("outtarget.xml"); | 
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| 89 | assert(ifs); | 
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| 90 | boost::archive::xml_iarchive ia(ifs); | 
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| 91 | VBase * pVBase; | 
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| 92 | ia >> boost::serialization::make_nvp("pVBase", pVBase); | 
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| 93 | } | 
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| 94 | // Serialize pSub1 via VBase pointer. | 
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| 95 | { | 
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| 96 | std::ofstream ofs("outsub1.xml"); | 
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| 97 | boost::archive::xml_oarchive oa(ofs); | 
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| 98 | assert(ofs); | 
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| 99 | Sub1* pSub1 = new Sub1; | 
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| 100 | VBase * pVBase = pSub1; | 
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| 101 | oa << boost::serialization::make_nvp("pVBase", pVBase); | 
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| 102 | } | 
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| 103 | { | 
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| 104 | std::ifstream ifs("outsub1.xml"); | 
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| 105 | assert(ifs); | 
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| 106 | boost::archive::xml_iarchive ia(ifs); | 
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| 107 | VBase * pVBase; | 
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| 108 | ia >> boost::serialization::make_nvp("pVBase", pVBase); | 
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| 109 | } | 
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| 110 | } | 
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| 111 |  | 
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