You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
2.3 KiB
114 lines
2.3 KiB
/* Cell object implementation */ |
|
|
|
#include "Python.h" |
|
|
|
PyObject * |
|
PyCell_New(PyObject *obj) |
|
{ |
|
PyCellObject *op; |
|
|
|
op = (PyCellObject *)PyObject_GC_New(PyCellObject, &PyCell_Type); |
|
op->ob_ref = obj; |
|
Py_XINCREF(obj); |
|
|
|
_PyObject_GC_TRACK(op); |
|
return (PyObject *)op; |
|
} |
|
|
|
PyObject * |
|
PyCell_Get(PyObject *op) |
|
{ |
|
if (!PyCell_Check(op)) { |
|
PyErr_BadInternalCall(); |
|
return NULL; |
|
} |
|
Py_XINCREF(((PyCellObject*)op)->ob_ref); |
|
return PyCell_GET(op); |
|
} |
|
|
|
int |
|
PyCell_Set(PyObject *op, PyObject *obj) |
|
{ |
|
if (!PyCell_Check(op)) { |
|
PyErr_BadInternalCall(); |
|
return -1; |
|
} |
|
Py_XDECREF(((PyCellObject*)op)->ob_ref); |
|
Py_XINCREF(obj); |
|
PyCell_SET(op, obj); |
|
return 0; |
|
} |
|
|
|
static void |
|
cell_dealloc(PyCellObject *op) |
|
{ |
|
_PyObject_GC_UNTRACK(op); |
|
Py_XDECREF(op->ob_ref); |
|
PyObject_GC_Del(op); |
|
} |
|
|
|
static int |
|
cell_compare(PyCellObject *a, PyCellObject *b) |
|
{ |
|
if (a->ob_ref == NULL) { |
|
if (b->ob_ref == NULL) |
|
return 0; |
|
return -1; |
|
} else if (b->ob_ref == NULL) |
|
return 1; |
|
return PyObject_Compare(a->ob_ref, b->ob_ref); |
|
} |
|
|
|
static PyObject * |
|
cell_repr(PyCellObject *op) |
|
{ |
|
if (op->ob_ref == NULL) |
|
return PyString_FromFormat("<cell at %p: empty>", op); |
|
|
|
return PyString_FromFormat("<cell at %p: %.80s object at %p>", |
|
op, op->ob_ref->ob_type->tp_name, |
|
op->ob_ref); |
|
} |
|
|
|
static int |
|
cell_traverse(PyCellObject *op, visitproc visit, void *arg) |
|
{ |
|
if (op->ob_ref) |
|
return visit(op->ob_ref, arg); |
|
return 0; |
|
} |
|
|
|
static int |
|
cell_clear(PyCellObject *op) |
|
{ |
|
Py_XDECREF(op->ob_ref); |
|
op->ob_ref = NULL; |
|
return 0; |
|
} |
|
|
|
PyTypeObject PyCell_Type = { |
|
PyObject_HEAD_INIT(&PyType_Type) |
|
0, |
|
"cell", |
|
sizeof(PyCellObject), |
|
0, |
|
(destructor)cell_dealloc, /* tp_dealloc */ |
|
0, /* tp_print */ |
|
0, /* tp_getattr */ |
|
0, /* tp_setattr */ |
|
(cmpfunc)cell_compare, /* tp_compare */ |
|
(reprfunc)cell_repr, /* tp_repr */ |
|
0, /* tp_as_number */ |
|
0, /* tp_as_sequence */ |
|
0, /* tp_as_mapping */ |
|
0, /* tp_hash */ |
|
0, /* tp_call */ |
|
0, /* tp_str */ |
|
PyObject_GenericGetAttr, /* tp_getattro */ |
|
0, /* tp_setattro */ |
|
0, /* tp_as_buffer */ |
|
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */ |
|
0, /* tp_doc */ |
|
(traverseproc)cell_traverse, /* tp_traverse */ |
|
(inquiry)cell_clear, /* tp_clear */ |
|
};
|
|
|