test_opaque_types.cpp revision 11986:c12e4625ab56
1/* 2 tests/test_opaque_types.cpp -- opaque types, passing void pointers 3 4 Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> 5 6 All rights reserved. Use of this source code is governed by a 7 BSD-style license that can be found in the LICENSE file. 8*/ 9 10#include "pybind11_tests.h" 11#include <pybind11/stl.h> 12#include <vector> 13 14typedef std::vector<std::string> StringList; 15 16class ClassWithSTLVecProperty { 17public: 18 StringList stringList; 19}; 20 21/* IMPORTANT: Disable internal pybind11 translation mechanisms for STL data structures */ 22PYBIND11_MAKE_OPAQUE(StringList); 23 24test_initializer opaque_types([](py::module &m) { 25 py::class_<StringList>(m, "StringList") 26 .def(py::init<>()) 27 .def("pop_back", &StringList::pop_back) 28 /* There are multiple versions of push_back(), etc. Select the right ones. */ 29 .def("push_back", (void (StringList::*)(const std::string &)) &StringList::push_back) 30 .def("back", (std::string &(StringList::*)()) &StringList::back) 31 .def("__len__", [](const StringList &v) { return v.size(); }) 32 .def("__iter__", [](StringList &v) { 33 return py::make_iterator(v.begin(), v.end()); 34 }, py::keep_alive<0, 1>()); 35 36 py::class_<ClassWithSTLVecProperty>(m, "ClassWithSTLVecProperty") 37 .def(py::init<>()) 38 .def_readwrite("stringList", &ClassWithSTLVecProperty::stringList); 39 40 m.def("print_opaque_list", [](const StringList &l) { 41 std::string ret = "Opaque list: ["; 42 bool first = true; 43 for (auto entry : l) { 44 if (!first) 45 ret += ", "; 46 ret += entry; 47 first = false; 48 } 49 return ret + "]"; 50 }); 51 52 m.def("return_void_ptr", []() { return (void *) 0x1234; }); 53 m.def("get_void_ptr_value", [](void *ptr) { return reinterpret_cast<std::intptr_t>(ptr); }); 54 m.def("return_null_str", []() { return (char *) nullptr; }); 55 m.def("get_null_str_value", [](char *ptr) { return reinterpret_cast<std::intptr_t>(ptr); }); 56 57 m.def("return_unique_ptr", []() -> std::unique_ptr<StringList> { 58 StringList *result = new StringList(); 59 result->push_back("some value"); 60 return std::unique_ptr<StringList>(result); 61 }); 62}); 63