text: /*
      tests/test_stl_binders.cpp -- Usage of stl_binders functions
  
      Copyright (c) 2016 Sergey Lyskov
  
      All rights reserved. Use of this source code is governed by a
      BSD-style license that can be found in the LICENSE file.
  */
  
  #include "pybind11_tests.h"
  
  #include <pybind11/stl_bind.h>
  #include <pybind11/numpy.h>
  #include <map>
  #include <deque>
  #include <unordered_map>
  
  class El {
  public:
      El() = delete;
      El(int v) : a(v) { }
  
      int a;
  };
  
  std::ostream & operator<<(std::ostream &s, El const&v) {
      s << "El{" << v.a << '}';
      return s;
  }
  
  /// Issue #487: binding std::vector<E> with E non-copyable
  class E_nc {
  public:
      explicit E_nc(int i) : value{i} {}
      E_nc(const E_nc &) = delete;
      E_nc &operator=(const E_nc &) = delete;
      E_nc(E_nc &&) = default;
      E_nc &operator=(E_nc &&) = default;
  
      int value;
  };
  
  template <class Container> Container *one_to_n(int n) {
      auto v = new Container();
      for (int i = 1; i <= n; i++)
          v->emplace_back(i);
      return v;
  }
  
  template <class Map> Map *times_ten(int n) {
      auto m = new Map();
      for (int i = 1; i <= n; i++)
          m->emplace(int(i), E_nc(10*i));
      return m;
  }
  
  TEST_SUBMODULE(stl_binders, m) {
  
      // test_vector_int
      py::bind_vector<std::vector<unsigned int>>(m, "VectorInt", py::buffer_protocol());
  
      // test_vector_bool
      py::bind_vector<std::vector<bool>>(m, "VectorBool");
  
      // test_vector_custom
      py::class_<El>(m, "El")
          .def(py::init<int>());
      py::bind_vector<std::vector<El>>(m, "VectorEl");
      py::bind_vector<std::vector<std::vector<El>>>(m, "VectorVectorEl");
  
      // test_map_string_double
      py::bind_map<std::map<std::string, double>>(m, "MapStringDouble");
      py::bind_map<std::unordered_map<std::string, double>>(m, "UnorderedMapStringDouble");
  
      // test_map_string_double_const
      py::bind_map<std::map<std::string, double const>>(m, "MapStringDoubleConst");
      py::bind_map<std::unordered_map<std::string, double const>>(m, "UnorderedMapStringDoubleConst");
  
      py::class_<E_nc>(m, "ENC")
          .def(py::init<int>())
          .def_readwrite("value", &E_nc::value);
  
      // test_noncopyable_containers
      py::bind_vector<std::vector<E_nc>>(m, "VectorENC");
      m.def("get_vnc", &one_to_n<std::vector<E_nc>>, py::return_value_policy::reference);
      py::bind_vector<std::deque<E_nc>>(m, "DequeENC");
      m.def("get_dnc", &one_to_n<std::deque<E_nc>>, py::return_value_policy::reference);
      py::bind_map<std::map<int, E_nc>>(m, "MapENC");
      m.def("get_mnc", &times_ten<std::map<int, E_nc>>, py::return_value_policy::reference);
      py::bind_map<std::unordered_map<int, E_nc>>(m, "UmapENC");
      m.def("get_umnc", &times_ten<std::unordered_map<int, E_nc>>, py::return_value_policy::reference);
  
      // test_vector_buffer
      py::bind_vector<std::vector<unsigned char>>(m, "VectorUChar", py::buffer_protocol());
      // no dtype declared for this version:
      struct VUndeclStruct { bool w; uint32_t x; double y; bool z; };
      m.def("create_undeclstruct", [m] () mutable {
          py::bind_vector<std::vector<VUndeclStruct>>(m, "VectorUndeclStruct", py::buffer_protocol());
      });
  
      // The rest depends on numpy:
      try { py::module::import("numpy"); }
      catch (...) { return; }
  
      // test_vector_buffer_numpy
      struct VStruct { bool w; uint32_t x; double y; bool z; };
      PYBIND11_NUMPY_DTYPE(VStruct, w, x, y, z);
      py::class_<VStruct>(m, "VStruct").def_readwrite("x", &VStruct::x);
      py::bind_vector<std::vector<VStruct>>(m, "VectorStruct", py::buffer_protocol());
      m.def("get_vectorstruct", [] {return std::vector<VStruct> {{0, 5, 3.0, 1}, {1, 30, -1e4, 0}};});
  }
  