// Copyright David Abrahams 2002. // Copyright Stefan Seefeld 2016. // Distributed under 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) #ifndef boost_python_converter_shared_ptr_from_python_hpp_ #define boost_python_converter_shared_ptr_from_python_hpp_ #include #include #include #include #include #ifndef BOOST_PYTHON_NO_PY_SIGNATURES # include #endif #include #include namespace boost { namespace python { namespace converter { template class SP> struct shared_ptr_from_python { shared_ptr_from_python() { converter::registry::insert(&convertible, &construct, type_id >() #ifndef BOOST_PYTHON_NO_PY_SIGNATURES , &converter::expected_from_python_type_direct::get_pytype #endif ); } private: static void* convertible(PyObject* p) { if (p == Py_None) return p; return converter::get_lvalue_from_python(p, registered::converters); } static void construct(PyObject* source, rvalue_from_python_stage1_data* data) { void* const storage = ((converter::rvalue_from_python_storage >*)data)->storage.bytes; // Deal with the "None" case. if (data->convertible == source) new (storage) SP(); else { SP hold_convertible_ref_count( (void*)0, shared_ptr_deleter(handle<>(borrowed(source))) ); // use aliasing constructor new (storage) SP(hold_convertible_ref_count, static_cast(data->convertible)); } data->convertible = storage; } }; }}} // namespace boost::python::converter #endif