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bpo-35911: add cell constructor (GH-11771)

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Add a cell constructor, expose the cell type in the types module.
This commit is contained in:
Pierre Glaser 2019-02-07 20:36:48 +01:00 • committed by Antoine Pitrou
parent f289084c83
commit df8d2cde63
6 changed files with 71 additions and 2 deletions
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42
Objects/cellobject.c
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@ -20,6 +20,37 @@ PyCell_New(PyObject *obj)
return (PyObject *)op;
}
PyDoc_STRVAR(cell_new_doc,
"cell([contents])\n"
"--\n"
"\n"
"Create a new cell object.\n"
"\n"
" contents\n"
" the contents of the cell. If not specified, the cell will be empty,\n"
" and \n further attempts to access its cell_contents attribute will\n"
" raise a ValueError.");
static PyObject *
cell_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
PyObject *return_value = NULL;
PyObject *obj = NULL;
if (!_PyArg_NoKeywords("cell", kwargs)) {
goto exit;
}
/* min = 0: we allow the cell to be empty */
if (!PyArg_UnpackTuple(args, "cell", 0, 1, &obj)) {
goto exit;
}
return_value = PyCell_New(obj);
exit:
return return_value;
}
PyObject *
PyCell_Get(PyObject *op)
{
@ -146,7 +177,7 @@ PyTypeObject PyCell_Type = {
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
0, /* tp_doc */
cell_new_doc, /* tp_doc */
(traverseproc)cell_traverse, /* tp_traverse */
(inquiry)cell_clear, /* tp_clear */
cell_richcompare, /* tp_richcompare */
@ -156,4 +187,13 @@ PyTypeObject PyCell_Type = {
0, /* tp_methods */
0, /* tp_members */
cell_getsetlist, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
(newfunc)cell_new, /* tp_new */
0, /* tp_free */
};