/* example/example14.cpp -- opaque types, passing void pointers Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch> All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. */ #include "example.h" #include <pybind11/stl.h> #include <vector> typedef std::vector<std::string> StringList; void init_ex14(py::module &m) { py::class_<py::opaque<StringList>>(m, "StringList") .def(py::init<>()) .def("push_back", [](py::opaque<StringList> &l, const std::string &str) { l->push_back(str); }) .def("pop_back", [](py::opaque<StringList> &l) { l->pop_back(); }) .def("back", [](py::opaque<StringList> &l) { return l->back(); }); m.def("print_opaque_list", [](py::opaque<StringList> &_l) { StringList &l = _l; std::cout << "Opaque list: " << std::endl; for (auto entry : l) std::cout << " " << entry << std::endl; }); m.def("return_void_ptr", []() { return (void *) 1234; }); m.def("print_void_ptr", [](void *ptr) { std::cout << "Got void ptr : " << (uint64_t) ptr << std::endl; }); m.def("return_null_str", []() { return (char *) nullptr; }); m.def("print_null_str", [](char *ptr) { std::cout << "Got null str : " << (uint64_t) ptr << std::endl; }); m.def("return_unique_ptr", []() -> std::unique_ptr<StringList> { StringList *result = new StringList(); result->push_back("some value"); return std::unique_ptr<StringList>(result); }); }