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Diffstat (limited to 'src/boost/libs/serialization/test/test_diamond.cpp')
| -rw-r--r-- | src/boost/libs/serialization/test/test_diamond.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/boost/libs/serialization/test/test_diamond.cpp b/src/boost/libs/serialization/test/test_diamond.cpp new file mode 100644 index 00000000..d62e5673 --- /dev/null +++ b/src/boost/libs/serialization/test/test_diamond.cpp @@ -0,0 +1,205 @@ +/////////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); + delete bp; + std::remove(testfile); + + return EXIT_SUCCESS; +} |