Modules/_typesmodule.c

   1 /* This extension module exposes some types that are only available at the
   2  * C level.  It should not be used directly, but instead through the Python
   3  * level types modules, which imports this.
   4  */
   5
   6 #include "Python.h"
   7 #include "structmember.h"
   8
   9 typedef struct
  10 {
  11     PyObject_HEAD
  12     int member;
  13 } Helper;
  14
  15 static PyMemberDef helper_members[] = {
  16     { "member", T_INT,  offsetof(Helper, member), READONLY,
  17       PyDoc_STR("A member descriptor")
  18     },
  19     { NULL }
  20 };
  21
  22 static PyObject *
  23 helper_getter(Helper *self, void *unused)
  24 {
  25     Py_RETURN_NONE;
  26 }
  27
  28 static PyGetSetDef helper_getset[] = {
  29     { "getter", (getter)helper_getter, NULL,
  30       PyDoc_STR("A getset descriptor"),
  31     },
  32     { NULL }
  33 };
  34
  35 static PyTypeObject HelperType = {
  36     PyVarObject_HEAD_INIT(NULL, 0)
  37     "_types.Helper",                            /* tp_name */
  38     sizeof(Helper),                             /* tp_basicsize */
  39     0,                                          /* tp_itemsize */
  40     0,                                          /* tp_dealloc */
  41     0,                                          /* tp_print */
  42     0,                                          /* tp_getattr */
  43     0,                                          /* tp_setattr */
  44     0,                                          /* tp_compare */
  45     0,                                          /* tp_repr */
  46     0,                                          /* tp_as_number */
  47     0,                                          /* tp_as_sequence */
  48     0,                                          /* tp_as_mapping */
  49     0,                                          /* tp_hash */
  50     0,                                          /* tp_call */
  51     0,                                          /* tp_str */
  52     0,                                          /* tp_getattro */
  53     0,                                          /* tp_setattro */
  54     0,                                          /* tp_as_buffer */
  55     Py_TPFLAGS_DEFAULT,                         /* tp_flags */
  56     0,                                          /* tp_doc */
  57     0,                                          /* tp_traverse */
  58     0,                                          /* tp_clear */
  59     0,                                          /* tp_richcompare */
  60     0,                                          /* tp_weaklistoffset */
  61     0,                                          /* tp_iter */
  62     0,                                          /* tp_iternext */
  63     0,                                          /* tp_methods */
  64     helper_members,                             /* tp_members */
  65     helper_getset,                              /* tp_getset */
  66     0,                                          /* tp_base */
  67     0,                                          /* tp_dict */
  68     0,                                          /* tp_descr_get */
  69     0,                                          /* tp_descr_set */
  70     0,                                          /* tp_dictoffset */
  71     0,                                          /* tp_init */
  72     0,                                          /* tp_alloc */
  73     0,                                          /* tp_new */
  74     0,                                          /* tp_free */
  75 };
  76
  77 PyMODINIT_FUNC
  78 init_types(void)
  79 {
  80     PyObject *m;
  81
  82     m = Py_InitModule3("_types", NULL, "A types module helper");
  83     if (!m)
  84         return;
  85
  86     if (PyType_Ready(&HelperType) < 0)
  87         return;
  88
  89     Py_INCREF(&HelperType);
  90     PyModule_AddObject(m, "Helper", (PyObject *)&HelperType);
  91 }
  92
  93