December 2005 - Boost-users - lists.preview.boost.org

Re: [Boost-users] [serialization]Mal-formed XML output
by Merrill Cornish 27 Dec '05

27 Dec '05

Robert, Here is the relevant code: =========================================== from the header file for the class being serialized... #include "boost/serialization/shared_ptr.hpp" #include "boost/serialization/nvp.hpp" #include "boost/date_time/posix_time/ptime.hpp" #include "boost/date_time/posix_time/time_serialize.hpp" . . . private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(WkFlo::RetractionMixin); ar & BOOST_SERIALIZATION_NVP(mNode); ar & BOOST_SERIALIZATION_NVP(mExportId); ar & BOOST_SERIALIZATION_NVP(mExportStart); }//serialize() where mNode is a shared_ptr<>, mExportedId is a string, and mExportStart is a ptime. =========================================== from the test source file... #include "boost/archive/xml_iarchive.hpp" #include "boost/archive/xml_oarchive.hpp" #include "boost/serialization/shared_ptr.hpp" #include "boost/serialization/nvp.hpp" . . . void ExportedNode_Test::serializationTest() { const char* archiveFile = "temp/Exported_Node_archive.xml"; remove(archiveFile); // remove any file with that name MockNode_ptr BasicNodeObj1(new MockNode(2312)); ExportedNode_ptr testObj_out(new ExportedNode(BasicNodeObj1, "abcd")); { // save data to archive ofstream outStream(archiveFile); boost::archive::xml_oarchive outArchive(outStream); // write class instance to archive try { outArchive << BOOST_SERIALIZATION_NVP(testObj_out); } catch (exception& ex) { cerr << "write: " << ex.what() << endl;} } // archive and stream closed when destructors are called . . . } where the outArchive << is what wrote: <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <testObj_out class_id="0" tracking_level="0" version="1"> <px class_id="1" tracking_level="1" version="0" object_id="_0"</boost_serialization> and threw the exception: "unrecognized XML syntax" Is this enough to go on? Merrill

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[serialization]Mal-formed XML output
by Merrill Cornish 27 Dec '05

27 Dec '05

I've finally gotten serialization for XML archives to compile using Boost 1.33.1. Now I'm trying to execute the test. Unfortunately, the first archive output statement outArchive << BOOST_SERIALIZATION_NVP(testObj_out); triggers an exception saying, "unrecognized XML syntax". The output file looks like <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <testObj_out class_id="0" tracking_level="0" version="1"> <px class_id="1" tracking_level="1" version="0" object_id="_0"</boost_serialization> Note that the closing ">" for the px element is missing, which is probably the reason why there is no newline before </boost_serialization>. The serialize() function for the class object being archived has one ar & for a base class plus three data members. So, it looks like serialization is going awry while string to write the initial class element and never gets to the class contents. By the way, I've never seen the XML root element (<boost_serialization>) with attributes. Is that standard? Any ideas? Merrill

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The boost Tokenizer package: split into a vector of vectors of tokens
by Alex Vinokur 27 Dec '05

27 Dec '05

Can the boost Tokenizer package split a string into into a series of serieses of tokens (a vector of vectors of tokens)? ==================== For instance, string s = "ab cd \nxy z\n123"; vector<vector<string> > v; Output should be as follows: v[0][0] = "ab"; v[0][1] = "cd"; v[1][0] = "xy"; v[1][1] = "z"; v[2][0] = "123"; ==================== http://boost.org/libs/tokenizer/introduc.htm doesn't contain such a sample. Alex Vinokur email: alex DOT vinokur AT gmail DOT com http://mathforum.org/library/view/10978.html http://sourceforge.net/users/alexvn

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Confusion about output_test_stream in the testing tools
by Ross Boylan 27 Dec '05

27 Dec '05

I have a unit test case that includes #include <boost/test/auto_unit_test.hpp> #include <boost/test/floating_point_comparison.hpp> // I will try without the unit test namespace // 1.32 using boost::test_toolbox::ostream_test_stream; using boost::test_toolbox::output_test_stream; output_test_stream ostream; This worked in 1.32 (I think--the comment makes it sound as if it shouldn't). But in 1.33 I get error: `output_test_stream' not declared Turning to the documentation, I couldn't find any mention of this navigating the docs for boost.test (including looking at the detailed release notes). However, when I did a site search I found http://www.boost.org/libs/test/doc/components/test_tools/output_test_stream… That page itself is confusing. the heading is boost::test_tools::ostream_test_stream but the class definition and other material use output_test_stream. The file test/output_test_stream.hpp names the class output test stream. Can anyone clarify what's going on? Either the documentation needs to be tweaked, or I'm confused, or both. Ross

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Boost serialization- looks great, but I'm confused about serializing polymorphic types
by Terence Wilson 24 Dec '05

24 Dec '05

I am an MFC veteran that wants to use a more modern mechanism for archival, in MFC a base pointer can be written and the object recreated automatically upon the read. I've been reading the serialization documentation and I am very confused about what I need to do to make this work using Boost, the code I have so far fails to compile with a static assert in the save function in oserializer.hpp. class CMyClassBase { public: CMyClassBase():m_TagBase(0){} virtual ~CMyClassBase(){} int m_TagBase; friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */) { ar & m_TagBase; } }; class CMyClassDerived : public CMyClassBase { public: CMyClassDerived():m_TagDerived(1){} virtual ~CMyClassDerived(){} int m_TagDerived; friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */) { boost::serialization::base_object<CMyClassBase>(*this); ar & m_TagDerived; } }; BOOST_CLASS_EXPORT_GUID(CMyClassDerived, "CMyClassDerived") void save_myclass(CMyClassBase* pMyClassBase, const char * filename){ // make an archive std::ofstream ofs(filename); boost::archive::text_oarchive oa(ofs); oa << pMyClassBase; } void restore_myclass(CMyClassBase* pMyClassBase, const char * filename) { // open the archive std::ifstream ifs(filename); boost::archive::text_iarchive ia(ifs); // restore the schedule from the archive ia >> pMyClassBase; }

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Re: [Boost-users] [serialization] Can't compile archive I/O - 2
by Merrill Cornish 24 Dec '05

24 Dec '05

Robert, Thanks. THAT did it. It also explained to me why this had worked before then "suddenly" stopped working. In the intervening time, I had "optimized" my headers and #includes. Somewhere along the way, I got serialization headers before archive headers. Would it be useful to put something like #define BOOST_SERIALIZATION_HEADER_INCLUDED in each serialization header file and #ifdef BOOST_SERIALIZATION_HEADER_INCLUDED #error A Boost serialization header was included BEFORE an Boost archive header. #endif. in each archive header file? In the meantime, thanks for your help, thanks for the promptness of your help, and have warm, safe holidays. Merrill

2 1

Re: [Boost-users] [serialization] Can't compile archive I/O - 2
by Merrill Cornish 24 Dec '05

24 Dec '05

Robert, I just now got home to try adding the two NVP wrappers you suggested. The old problems went away, but there's a new set: Merrill Succ.h=========================================== #include "boost/serialization/nvp.hpp" #include "boost/test/test_tools.hpp" namespace MyNS { class Succ { friend class Succ_Test; private: size_t mInputIndex; bool mIsInbound; friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(mInputIndex); ar & BOOST_SERIALIZATION_NVP(mIsInbound); }//serialize() public: Succ() {} // needed by serialization Succ(size_t inputIndex, bool isInbound); virtual ~Succ(); size_t inputIndex() const; bool isInbound() const; };//Succ }//MyNS Succ_Test.cc=================================== #include <fstream> #include "Succ.h" #include "boost/archive/xml_iarchive.hpp" #include "boost/archive/xml_oarchive.hpp" #include "boost/test/test_tools.hpp" using namespace std; namespace MyNS { class Succ_Test { public: void run(); };//Succ_Test //============================================================================= void Succ_Test::run() { const char* archiveFile = "temp/Succ_archive.xml"; size_t inputIndex = 65; bool isInbound = true; Succ* testObj_out = new Succ(inputIndex, isInbound); { // save data to archive ofstream outStream(archiveFile); boost::archive::xml_oarchive outArchive(outStream); // write class instance to archive outArchive << BOOST_SERIALIZATION_NVP(testObj_out); } // archive and stream closed when destructors are called Succ* testObj_in;// = new Succ(); { // create and open an archive for input ifstream inStream(archiveFile); boost::archive::xml_iarchive inArchive(inStream); // read class state from archive inArchive >> BOOST_SERIALIZATION_NVP(testObj_in); } // archive and stream closed when destructors are called return; }//run() }//MyNS compile stderr======================================== Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp: In static member function `static void boost::archive::detail::save_pointer_type<Archive, TPtr>::save(Archive&, const T&, const boost::archive::detail::basic_pointer_oserializer*) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]': Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:467: instantiated from `static void boost::archive::detail::save_pointer_type<Archive, TPtr>::invoke(Archive&, TPtr) [with Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:536: instantiated from `void boost::archive::save(Archive&, const T&) [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/basic_xml_oarchive.hpp:99: instantiated from `void boost::archive::basic_xml_oarchive<Archive>::save_override(const boost::serialization::nvp<T>&, int) [with T = MyNS::Succ*, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/interface_oarchive.hpp:78: instantiated from `Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_oarchive]' Foo/test/src/Succ_Test.cc:48: instantiated from here Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:438: error: invalid use of undefined type `struct boost::serialization::extended_type_info_null<MyNS::Succ>' Foo/boost-1_33_1/include/boost/serialization/type_info_implementation.hpp:26: error: declaration of `struct boost::serialization::extended_type_info_null<MyNS::Succ>' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:439: error: invalid use of undefined type `struct boost::serialization::extended_type_info_null<MyNS::Succ>' Foo/boost-1_33_1/include/boost/serialization/type_info_implementation.hpp:26: error: declaration of `struct boost::serialization::extended_type_info_null<MyNS::Succ>' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:439: error: `save' is not a member of `<declaration error>' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp: In static member function `static T* boost::archive::detail::load_pointer_type<Archive, Tptr>::pointer_tweak(const boost::serialization::extended_type_info&, void*, T&) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]': Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:493: instantiated from `static void boost::archive::detail::load_pointer_type<Archive, Tptr>::invoke(Archive&, Tptr&) [with Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:572: instantiated from `void boost::archive::load(Archive&, T&) [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/basic_xml_iarchive.hpp:80: instantiated from `void boost::archive::basic_xml_iarchive<Archive>::load_override(const boost::serialization::nvp<T>&, int) [with T = MyNS::Succ*, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/xml_iarchive.hpp:74: instantiated from `void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/interface_iarchive.hpp:76: instantiated from `Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_iarchive]' Foo/test/src/Succ_Test.cc:58: instantiated from here Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:475: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp: In constructor `boost::archive::detail::pointer_oserializer<T, Archive>::pointer_oserializer() [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive]': Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:198: instantiated from `const boost::archive::detail::pointer_oserializer<MyNS::Succ, boost::archive::xml_oarchive> boost::archive::detail::pointer_oserializer<MyNS::Succ, boost::archive::xml_oarchive>::instance' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:190: instantiated from `static const boost::archive::detail::pointer_oserializer<T, Archive>& boost::archive::detail::pointer_oserializer<T, Archive>::instantiate() [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:515: instantiated from `const boost::archive::detail::basic_pointer_oserializer& boost::archive::detail::instantiate_pointer_oserializer(Archive*, T*) [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ]' Foo/boost-1_33_1/include/boost/archive/detail/interface_oarchive.hpp:58: instantiated from `const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::interface_oarchive<Archive>::register_type(const T*) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:344: instantiated from `static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::non_abstract<T>::register_type(Archive&) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:360: instantiated from `static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::register_type(Archive&, T&) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:460: instantiated from `static void boost::archive::detail::save_pointer_type<Archive, TPtr>::invoke(Archive&, TPtr) [with Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:536: instantiated from `void boost::archive::save(Archive&, const T&) [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/basic_xml_oarchive.hpp:99: instantiated from `void boost::archive::basic_xml_oarchive<Archive>::save_override(const boost::serialization::nvp<T>&, int) [with T = MyNS::Succ*, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/interface_oarchive.hpp:78: instantiated from `Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_oarchive]' Foo/test/src/Succ_Test.cc:48: instantiated from here Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:233: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:233: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp: In constructor `boost::archive::detail::pointer_iserializer<T, Archive>::pointer_iserializer() [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive]': Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:211: instantiated from `const boost::archive::detail::pointer_iserializer<MyNS::Succ, boost::archive::xml_iarchive> boost::archive::detail::pointer_iserializer<MyNS::Succ, boost::archive::xml_iarchive>::instance' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:203: instantiated from `static const boost::archive::detail::pointer_iserializer<T, Archive>& boost::archive::detail::pointer_iserializer<T, Archive>::instantiate() [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:546: instantiated from `const boost::archive::detail::basic_pointer_iserializer& boost::archive::detail::instantiate_pointer_iserializer(Archive*, T*) [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ]' Foo/boost-1_33_1/include/boost/archive/detail/interface_iarchive.hpp:57: instantiated from `const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::interface_iarchive<Archive>::register_type(T*) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:449: instantiated from `static const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::load_pointer_type<Archive, Tptr>::non_abstract<T>::register_type(Archive&) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:465: instantiated from `static const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::load_pointer_type<Archive, Tptr>::register_type(Archive&, T&) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:485: instantiated from `static void boost::archive::detail::load_pointer_type<Archive, Tptr>::invoke(Archive&, Tptr&) [with Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:572: instantiated from `void boost::archive::load(Archive&, T&) [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/basic_xml_iarchive.hpp:80: instantiated from `void boost::archive::basic_xml_iarchive<Archive>::load_override(const boost::serialization::nvp<T>&, int) [with T = MyNS::Succ*, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/xml_iarchive.hpp:74: instantiated from `void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/interface_iarchive.hpp:76: instantiated from `Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_iarchive]' Foo/test/src/Succ_Test.cc:58: instantiated from here Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:339: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:339: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp: In constructor `boost::archive::detail::oserializer<Archive, T>::oserializer() [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ]': Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:135: instantiated from `static boost::archive::detail::oserializer<Archive, T>& boost::archive::detail::oserializer<Archive, T>::instantiate() [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:235: instantiated from `boost::archive::detail::pointer_oserializer<T, Archive>::pointer_oserializer() [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:198: instantiated from `const boost::archive::detail::pointer_oserializer<MyNS::Succ, boost::archive::xml_oarchive> boost::archive::detail::pointer_oserializer<MyNS::Succ, boost::archive::xml_oarchive>::instance' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:190: instantiated from `static const boost::archive::detail::pointer_oserializer<T, Archive>& boost::archive::detail::pointer_oserializer<T, Archive>::instantiate() [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:515: instantiated from `const boost::archive::detail::basic_pointer_oserializer& boost::archive::detail::instantiate_pointer_oserializer(Archive*, T*) [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ]' Foo/boost-1_33_1/include/boost/archive/detail/interface_oarchive.hpp:58: instantiated from `const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::interface_oarchive<Archive>::register_type(const T*) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:344: instantiated from `static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::non_abstract<T>::register_type(Archive&) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:360: instantiated from `static const boost::archive::detail::basic_pointer_oserializer* boost::archive::detail::save_pointer_type<Archive, TPtr>::register_type(Archive&, T&) [with T = MyNS::Succ, Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:460: instantiated from `static void boost::archive::detail::save_pointer_type<Archive, TPtr>::invoke(Archive&, TPtr) [with Archive = boost::archive::xml_oarchive, TPtr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:536: instantiated from `void boost::archive::save(Archive&, const T&) [with Archive = boost::archive::xml_oarchive, T = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/basic_xml_oarchive.hpp:99: instantiated from `void boost::archive::basic_xml_oarchive<Archive>::save_override(const boost::serialization::nvp<T>&, int) [with T = MyNS::Succ*, Archive = boost::archive::xml_oarchive]' Foo/boost-1_33_1/include/boost/archive/detail/interface_oarchive.hpp:78: instantiated from `Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_oarchive]' Foo/test/src/Succ_Test.cc:48: instantiated from here Foo/boost-1_33_1/include/boost/archive/detail/oserializer.hpp:108: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp: In constructor `boost::archive::detail::iserializer<Archive, T>::iserializer() [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ]': Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:146: instantiated from `static boost::archive::detail::iserializer<Archive, T>& boost::archive::detail::iserializer<Archive, T>::instantiate() [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:340: instantiated from `boost::archive::detail::pointer_iserializer<T, Archive>::pointer_iserializer() [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:211: instantiated from `const boost::archive::detail::pointer_iserializer<MyNS::Succ, boost::archive::xml_iarchive> boost::archive::detail::pointer_iserializer<MyNS::Succ, boost::archive::xml_iarchive>::instance' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:203: instantiated from `static const boost::archive::detail::pointer_iserializer<T, Archive>& boost::archive::detail::pointer_iserializer<T, Archive>::instantiate() [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:546: instantiated from `const boost::archive::detail::basic_pointer_iserializer& boost::archive::detail::instantiate_pointer_iserializer(Archive*, T*) [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ]' Foo/boost-1_33_1/include/boost/archive/detail/interface_iarchive.hpp:57: instantiated from `const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::interface_iarchive<Archive>::register_type(T*) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:449: instantiated from `static const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::load_pointer_type<Archive, Tptr>::non_abstract<T>::register_type(Archive&) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:465: instantiated from `static const boost::archive::detail::basic_pointer_iserializer* boost::archive::detail::load_pointer_type<Archive, Tptr>::register_type(Archive&, T&) [with T = MyNS::Succ, Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:485: instantiated from `static void boost::archive::detail::load_pointer_type<Archive, Tptr>::invoke(Archive&, Tptr&) [with Archive = boost::archive::xml_iarchive, Tptr = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:572: instantiated from `void boost::archive::load(Archive&, T&) [with Archive = boost::archive::xml_iarchive, T = MyNS::Succ*]' Foo/boost-1_33_1/include/boost/archive/basic_xml_iarchive.hpp:80: instantiated from `void boost::archive::basic_xml_iarchive<Archive>::load_override(const boost::serialization::nvp<T>&, int) [with T = MyNS::Succ*, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/xml_iarchive.hpp:74: instantiated from `void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_iarchive]' Foo/boost-1_33_1/include/boost/archive/detail/interface_iarchive.hpp:76: instantiated from `Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = const boost::serialization::nvp<MyNS::Succ*>, Archive = boost::archive::xml_iarchive]' Foo/test/src/Succ_Test.cc:58: instantiated from here Foo/boost-1_33_1/include/boost/archive/detail/iserializer.hpp:115: error: incomplete type `boost::serialization::extended_type_info_null<MyNS::Succ>' used in nested name specifier make: *** [test/obj/Succ_Test.o] Error 1 //========================================================

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boost::filesystem question: iterate upcast directory path string?
by David Xiao 23 Dec '05

23 Dec '05

Hi Friends: For example I have path "C:\Temp\abcd\hello\", I wish to iterate to get C: , C:\Temp , C:\Temp\abcd , C:\Temp\abcd\hello . I have read code of path::iterator, but not what I expected.... How to do it? I also want to have the code portable for UNIX paths, means also work for "/foo/bar1/bar2/bar3/" ... Thanks for your help! Rgds, David

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Re: [Boost-users] [BGL] Remove all vertices from graph with zero degree
by Dmitry Bufistov 23 Dec '05

23 Dec '05

Hello Jeffrey, I'm sorry for long silence, but better later then never, Thank you very much for help! Merry Christmas! Best regards, --Dmitry > The way that I had to implement a template function to erase a graph > was like: > template<typename T1> inline void > WorkFlow_Datum::EraseGraph(T1& g) > { > typedef typename std::vector<typename > boost::graph_traits<T1>::vertex_descriptor> Vertices; > Vertices vertices; > typename boost::graph_traits<T1>::vertex_iterator vi,vi_end; > for (boost::tie(vi,vi_end)=boost::vertices(g);vi!=vi_end;++vi) > vertices.push_back(*vi); > for (typename Vertices::reverse_iterator > iter=vertices.rbegin();iter!=vertices.rend();++iter) { > boost::clear_vertex(*iter,g); > boost::remove_vertex(*iter,g); > } > } > > My graph uses vectors, so I suspect that you need to use something > similiar to avoid iterator instability and vertice descriptor > instability. The later is way a reverse iterator was needed. >

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asio review extended till Dec 30th
by Jeff Garland 23 Dec '05

23 Dec '05

Please post review comments to developer list... ---- Thanks to everyone for the excellent reviews and discussions of asio! Some folks want additional time for the asio review, so the review will be extended until Dec 30th. Note that Chrisopher may not be able to respond to posts during a significant part of this time due to holiday commitments, but the feedback will eventually be addressed and discussed. In the way of reminder, here's the library details again: Today (Dec 22nd) is the first continuation of the formal review of the Asynchronous I/O library (asio) library by Christopher Kohlhoff. The review will run be extended until Friday December 30th. I will be serving as review manager. >From the library synopsis: Boost.Asio is a cross-platform C++ library for network programming that provides developers with a consistent asynchronous I/O model using a modern C++ approach. Downloads of the library as well as online documentation can be found at: http://asio.sourceforge.net/ http://asio.sourceforge.net/boost-asio-proposal-0.3.6/libs/asio/doc/ As usual, please state in review comments how you reviewed the library and whether the you think the library should be accepted into Boost. Further guidelines for writing reviews can be found on the website at: http://www.boost.org/more/formal_review_process.htm#Comments Please review early and often! Thanks, Jeff ******************************************************* A Few Library Details: ******************************************************* Supported Platforms The following platforms and compilers have been tested: * Win32 using Visual C++ 7.1 and Visual C++ 8.0. * Win32 using Borland C++Builder 6 patch 4. * Win32 using MinGW. * Linux (2.4 or 2.6 kernels) using g++ 3.3 or later. * Solaris using g++ 3.3 or later. * Mac OS X 10.4 using g++ 3.3 or later. Rationale The Boost.Asio library is intended for programmers using C++ for systems programming, where access to operating system functionality such as networking is often required. In particular, Boost.Asio attempts to address the following goals: * Portability. The library should support, and provide consistent behaviour across, a range of commonly used operating systems. * Scalability. The library should allow, and indeed encourage, the development of network applications that scale to hundreds or thousands of concurrent connections. The library implementation for each operating system should use the mechanism that best enables this scalability. * Efficiency. The library should support techniques such as scatter-gather I/O, and allow protocol implementations that minimise data copying. * Model Berkeley sockets. The Berkeley sockets API is widely implemented and understood, as well as being covered in much literature. Other programming languages often use a similar interface for networking APIs. * Ease of use. Lower the entry barrier for new users by taking a toolkit, rather than framework, approach. That is, try to minimise the up-front investment in time to just learning a few basic rules and guidelines. After that, a library user should only need to understand the specific functions that are being used. * Basis for further abstraction. The library should permit the development of other libraries that provide higher levels of abstraction. For example, implementations of commonly used protocols such as HTTP. Although the current incarnation of Boost.Asio focuses primarily on networking, its concepts of asynchronous I/O can be extended to include other operating system resources such as files.

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