Hello All, I am trying to port C++ program to Python using Boost.Python. Have done already a lot of work with porting of classes(mostly based on std) and it works as expected. But currently strugling with the last one class to port(class Solver), which is almost the same as step-6.
Some code(link to repo <https://github.com/okmechak/RiverSim/blob/feature/python_api/source/pythonapi.cpp#L472> ): ```cpp class Solver { public: //Solver(): // dof_handler(triangulation), // fe(3), // quadrature_formula(3), // face_quadrature_formula(3) //{} ///Solver constructor Solver(Model *model): dof_handler(triangulation) { model = model; //fixme //fe = FE_Q<DIM>{model->solver_params.quadrature_degree}; //quadrature_formula = QGauss<DIM>{model->solver_params.quadrature_degree}; //face_quadrature_formula = QGauss<DIM - 1>{model->solver_params.quadrature_degree}; }; ~Solver(){clear();} void OpenMesh(const string fileName = "river.msh"); void run(); void output_results(const string file_name) const; vector<double> integrate(const Model& mdl, const Point& point, const double angle); ///Clear Solver object. void clear() { dof_handler.clear(); triangulation.clear(); hanging_node_constraints.clear(); system_matrix.clear(); solution.reinit(0); } private: Model *model = NULL; Triangulation<DIM> triangulation; DoFHandler<DIM> dof_handler; FE_Q<DIM> fe = FE_Q<DIM>{3}; QGauss<DIM> quadrature_formula = QGauss<DIM>{3}; QGauss<DIM - 1> face_quadrature_formula = QGauss<DIM - 1>{3}; AffineConstraints<double> hanging_node_constraints; SparsityPattern sparsity_pattern; SparseMatrix<double> system_matrix; Vector<double> solution; Vector<double> system_rhs; ConvergenceTable convergence_table; void setup_system(); void assemble_system(); void solve(); void refine_grid(); }; } // namespace River ``` BoostPython part: ```cpp class_<River::Solver>("Solver", init<River::Model*>(args("model"))) .def("OpenMesh", &River::Solver::OpenMesh) .def("run", &River::Solver::run) .def("output_results", &River::Solver::output_results) .def("integrate", &River::Solver::integrate) .def("clear", &River::Solver::clear) ; And it gives next error, but I nowhere use copy constructor of *DoFHandler* nor *Triangulation*: [ 98%] Building CXX object source/CMakeFiles/riversimPY.dir/pythonapi.cpp.o In file included from /usr/include/boost/preprocessor/iteration/detail/iter/forward1.hpp:52, from /usr/include/boost/python/object/value_holder.hpp:47, from /usr/include/boost/python/object/class_metadata.hpp:14, from /usr/include/boost/python/class.hpp:23, from /usr/include/boost/python.hpp:18, from /mnt/c/users/ofcra/dev/riversim/source/pythonapi.cpp:1: /usr/include/boost/python/object/value_holder.hpp: In instantiation of ‘boost::python::objects::value_holder<Value>::value_holder(PyObject*, A0) [with A0 = boost::reference_wrapper<const River::Solver>; Value = River::Solver; PyObject = _object]’: /usr/include/boost/python/object/make_instance.hpp:72:16: required from ‘static Holder* boost::python::objects::make_instance<T, Holder>::construct(void*, PyObject*, boost::reference_wrapper<const T>) [with T = River::Solver; Holder = boost::python::objects::value_holder<River::Solver>; PyObject = _object]’ /usr/include/boost/python/object/make_instance.hpp:46:31: required from ‘static PyObject* boost::python::objects::make_instance_impl<T, Holder, Derived>::execute(Arg&) [with Arg = const boost::reference_wrapper<const River::Solver>; T = River::Solver; Holder = boost::python::objects::value_holder<River::Solver>; Derived = boost::python::objects::make_instance<River::Solver, boost::python::objects::value_holder<River::Solver> >; PyObject = _object]’ /usr/include/boost/python/object/class_wrapper.hpp:29:37: required from ‘static PyObject* boost::python::objects::class_cref_wrapper<Src, MakeInstance>::convert(const Src&) [with Src = River::Solver; MakeInstance = boost::python::objects::make_instance<River::Solver, boost::python::objects::value_holder<River::Solver> >; PyObject = _object]’ /usr/include/boost/python/converter/as_to_python_function.hpp:27:61: required from ‘static PyObject* boost::python::converter::as_to_python_function<T, ToPython>::convert(const void*) [with T = River::Solver; ToPython = boost::python::objects::class_cref_wrapper<River::Solver, boost::python::objects::make_instance<River::Solver, boost::python::objects::value_holder<River::Solver> > >; PyObject = _object]’ /usr/include/boost/python/to_python_converter.hpp:83:9: [ skipping 2 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ] /usr/include/boost/python/object/class_metadata.hpp:227:55: required from ‘static void boost::python::objects::class_metadata<T, X1, X2, X3>::register_aux2(T2*, Callback) [with T2 = River::Solver; Callback = boost::integral_constant<bool, false>; T = River::Solver; X1 = boost::python::detail::not_specified; X2 = boost::python::detail::not_specified; X3 = boost::python::detail::not_specified]’ /usr/include/boost/python/object/class_metadata.hpp:218:38: required from ‘static void boost::python::objects::class_metadata<T, X1, X2, X3>::register_aux(void*) [with T = River::Solver; X1 = boost::python::detail::not_specified; X2 = boost::python::detail::not_specified; X3 = boost::python::detail::not_specified]’ /usr/include/boost/python/object/class_metadata.hpp:204:37: required from ‘static void boost::python::objects::class_metadata<T, X1, X2, X3>::register_() [with T = River::Solver; X1 = boost::python::detail::not_specified; X2 = boost::python::detail::not_specified; X3 = boost::python::detail::not_specified]’ /usr/include/boost/python/class.hpp:450:28: required from ‘void boost::python::class_<T, X1, X2, X3>::initialize(const DefVisitor&) [with DefVisitor = boost::python::init_base<boost::python::init<River::Model*> >; W = River::Solver; X1 = boost::python::detail::not_specified; X2 = boost::python::detail::not_specified; X3 = boost::python::detail::not_specified]’ /usr/include/boost/python/class.hpp:204:9: required from ‘boost::python::class_<T, X1, X2, X3>::class_(const char*, const boost::python::init_base<DerivedT>&) [with DerivedT = boost::python::init<River::Model*>; W = River::Solver; X1 = boost::python::detail::not_specified; X2 = boost::python::detail::not_specified; X3 = boost::python::detail::not_specified]’ /mnt/c/users/ofcra/dev/riversim/source/pythonapi.cpp:473:71: required from here /usr/include/boost/python/object/value_holder.hpp:133:13: *error: use of deleted function ‘River::Solver::Solver(const River::Solver&)’* 133 | BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_UNFORWARD_LOCAL, nil) | ^ In file included from /mnt/c/users/ofcra/dev/riversim/source/river/riversim.hpp:32, from /mnt/c/users/ofcra/dev/riversim/source/app.hpp:3, from /mnt/c/users/ofcra/dev/riversim/source/pythonapi.cpp:5: /mnt/c/users/ofcra/dev/riversim/source/river/solver.hpp:83:11: *note: ‘River::Solver::Solver(const River::Solver&)’ is implicitly deleted because the default definition would be ill-formed:* 83 | class Solver | ^~~~~~ /mnt/c/users/ofcra/dev/riversim/source/river/solver.hpp:83:11: *error: use of deleted function ‘dealii::Triangulation<<anonymous>, <anonymous> >::Triangulation(const dealii::Triangulation<<anonymous>, <anonymous> >&) [with int dim = 2; int spacedim = 2]*’ In file included from /mnt/c/users/ofcra/dev/riversim/source/river/solver.hpp:29, from /mnt/c/users/ofcra/dev/riversim/source/river/riversim.hpp:32, from /mnt/c/users/ofcra/dev/riversim/source/app.hpp:3, from /mnt/c/users/ofcra/dev/riversim/source/pythonapi.cpp:5: /mnt/c/users/ofcra/lib/dealii_s_debug/include/deal.II/grid/tria.h:1563:3: *note: declared here* * 1563 | Triangulation(const Triangulation<dim, spacedim> &) = delete;* | ^~~~~~~~~~~~~ In file included from /mnt/c/users/ofcra/dev/riversim/source/river/riversim.hpp:32, from /mnt/c/users/ofcra/dev/riversim/source/app.hpp:3, from /mnt/c/users/ofcra/dev/riversim/source/pythonapi.cpp:5: /mnt/c/users/ofcra/dev/riversim/source/river/solver.hpp:83:11: *error: use of deleted function ‘dealii::DoFHandler<dim, spacedim>::DoFHandler(const dealii::DoFHandler<dim, spacedim>&) [with int dim = 2; int spacedim = 2]’* 83 | class Solver | ^~~~~~ In file included from /mnt/c/users/ofcra/lib/dealii_s_debug/include/deal.II/dofs/dof_accessor.h:22, from /mnt/c/users/ofcra/lib/dealii_s_debug/include/deal.II/fe/fe_values.h:30, from /mnt/c/users/ofcra/dev/riversim/source/river/solver.hpp:39, from /mnt/c/users/ofcra/dev/riversim/source/river/riversim.hpp:32, from /mnt/c/users/ofcra/dev/riversim/source/app.hpp:3, from /mnt/c/users/ofcra/dev/riversim/source/pythonapi.cpp:5: /mnt/c/users/ofcra/lib/dealii_s_debug/include/deal.II/dofs/dof_handler.h:441:3:* note: declared here* * 441 | DoFHandler(const DoFHandler &) = delete;* | ^~~~~~~~~~ make[2]: *** [source/CMakeFiles/riversimPY.dir/build.make:63: source/CMakeFiles/riversimPY.dir/pythonapi.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:234: source/CMakeFiles/riversimPY.dir/all] Error 2 make: *** [Makefile:141: all] Error 2 Best, Oleg Kmechak -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. 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