cpython-lru_cache-weakref: Modules/

annotate Modules/_weakref.c @ 16413:8819867f14ef legacy-trunk

Patch derived from Trent's 101162: a Python/C API testing framework. STILL NEEDS UNIX BUILD CHANGES.

author	Tim Peters <tim.peters@gmail.com>
date	Fri, 02 Feb 2001 05:57:15 +0000
parents	08ac556f2d12
children	5a4bdfc66083

rev	line source
16385 1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	1 #include "Python.h"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	2 #include "structmember.h"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	3
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	4
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	5 typedef struct _PyWeakReference PyWeakReference;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	6
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	7 struct _PyWeakReference {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	8 PyObject_HEAD
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	9 PyObject *wr_object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	10 PyObject *wr_callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	11 PyWeakReference *wr_prev;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	12 PyWeakReference *wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	13 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	14
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	15
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	16 #define GET_WEAKREFS_LISTPTR(o) \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	17 ((PyWeakReference **) PyObject_GET_WEAKREFS_LISTPTR(o))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	18
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	19 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	20 ReferenceError;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	21
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	22 static PyWeakReference *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	23 free_list = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	24
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	25 staticforward PyTypeObject
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	26 PyWeakReference_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	27
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	28 static PyWeakReference *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	29 new_weakref(void)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	30 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	31 PyWeakReference *result;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	32
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	33 if (free_list != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	34 result = free_list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	35 free_list = result->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	36 result->ob_type = &PyWeakReference_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	37 _Py_NewReference(result);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	38 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	39 else {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	40 result = PyObject_NEW(PyWeakReference, &PyWeakReference_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	41 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	42 return result;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	43 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	44
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	45
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	46 /* This function clears the passed-in reference and removes it from the
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	47 * list of weak references for the referent. This is the only code that
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	48 * removes an item from the doubly-linked list of weak references for an
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	49 * object; it is also responsible for clearing the callback slot.
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	50 */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	51 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	52 clear_weakref(PyWeakReference *self)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	53 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	54 PyObject *callback = self->wr_callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	55
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	56 if (self->wr_object != Py_None) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	57 PyWeakReference **list = GET_WEAKREFS_LISTPTR(self->wr_object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	58
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	59 if (*list == self)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	60 *list = self->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	61 self->wr_object = Py_None;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	62 self->wr_callback = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	63 if (self->wr_prev != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	64 self->wr_prev->wr_next = self->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	65 if (self->wr_next != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	66 self->wr_next->wr_prev = self->wr_prev;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	67 self->wr_prev = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	68 self->wr_next = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	69 Py_XDECREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	70 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	71 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	72
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	73
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	74 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	75 weakref_dealloc(PyWeakReference *self)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	76 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	77 clear_weakref(self);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	78 PyObject_GC_Fini((PyObject *)self);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	79 self->wr_next = free_list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	80 free_list = self;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	81 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	82
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	83
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	84 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	85 gc_traverse(PyWeakReference self, visitproc visit, void arg)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	86 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	87 if (self->wr_callback != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	88 return visit(self->wr_callback, arg);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	89 return 0;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	90 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	91
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	92
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	93 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	94 gc_clear(PyWeakReference *self)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	95 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	96 clear_weakref(self);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	97 return 0;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	98 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	99
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	100
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	101 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	102 weakref_call(PyWeakReference self, PyObject args, PyObject *kw)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	103 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	104 static char *argnames[] = {NULL};
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	105
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	106 if (PyArg_ParseTupleAndKeywords(args, kw, ":__call__", argnames)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	107 PyObject *object = self->wr_object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	108 Py_INCREF(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	109 return (object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	110 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	111 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	112 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	113
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	114
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	115 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	116 weakref_repr(PyWeakReference *self)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	117 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	118 char buffer[256];
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	119 if (self->wr_object == Py_None) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	120 sprintf(buffer, "<weakref at %lx; dead>",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	121 (long)(self));
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	122 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	123 else {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	124 sprintf(buffer, "<weakref at %#lx; to '%s' at %#lx>",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	125 (long)(self), self->wr_object->ob_type->tp_name,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	126 (long)(self->wr_object));
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	127 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	128 return PyString_FromString(buffer);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	129 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	130
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	131
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	132 statichere PyTypeObject
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	133 PyWeakReference_Type = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	134 PyObject_HEAD_INIT(NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	135 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	136 "weakref",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	137 sizeof(PyWeakReference) + PyGC_HEAD_SIZE,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	138 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	139 (destructor)weakref_dealloc,/tp_dealloc/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	140 0, /tp_print/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	141 0, /tp_getattr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	142 0, /tp_setattr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	143 0, /tp_compare/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	144 (reprfunc)weakref_repr, /tp_repr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	145 0, /tp_as_number/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	146 0, /tp_as_sequence/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	147 0, /tp_as_mapping/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	148 0, /tp_hash/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	149 (ternaryfunc)weakref_call, /tp_call/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	150 0, /tp_str/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	151 0, /tp_getattro/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	152 0, /tp_setattro/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	153 0, /tp_as_buffer/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	154 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_GC,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	155 0, /tp_doc/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	156 (traverseproc)gc_traverse, /tp_traverse/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	157 (inquiry)gc_clear, /tp_clear/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	158 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	159
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	160
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	161 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	162 proxy_checkref(PyWeakReference *proxy)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	163 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	164 if (proxy->wr_object == Py_None) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	165 PyErr_SetString(ReferenceError,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	166 "weakly-referenced object no longer exists");
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	167 return 0;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	168 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	169 return 1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	170 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	171
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	172
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	173 #define WRAP_UNARY(method, generic) \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	174 static PyObject * \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	175 method(PyWeakReference *proxy) { \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	176 if (!proxy_checkref(proxy)) { \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	177 return NULL; \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	178 } \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	179 return generic(proxy->wr_object); \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	180 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	181
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	182 #define WRAP_BINARY(method, generic) \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	183 static PyObject * \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	184 method(PyWeakReference proxy, PyObject v) { \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	185 if (!proxy_checkref(proxy)) { \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	186 return NULL; \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	187 } \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	188 return generic(proxy->wr_object, v); \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	189 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	190
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	191 #define WRAP_TERNARY(method, generic) \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	192 static PyObject * \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	193 method(PyWeakReference proxy, PyObject v, PyObject *w) { \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	194 if (!proxy_checkref(proxy)) { \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	195 return NULL; \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	196 } \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	197 return generic(proxy->wr_object, v, w); \
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	198 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	199
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	200
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	201 /* direct slots */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	202
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	203 WRAP_BINARY(proxy_getattr, PyObject_GetAttr)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	204 WRAP_UNARY(proxy_str, PyObject_Str)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	205 WRAP_TERNARY(proxy_call, PyEval_CallObjectWithKeywords)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	206
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	207 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	208 proxy_print(PyWeakReference proxy, FILE fp, int flags)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	209 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	210 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	211 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	212 return PyObject_Print(proxy->wr_object, fp, flags);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	213 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	214
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	215 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	216 proxy_repr(PyWeakReference *proxy)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	217 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	218 char buf[160];
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	219 sprintf(buf, "<weakref at %p to %.100s at %p>", proxy,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	220 proxy->wr_object->ob_type->tp_name, proxy->wr_object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	221 return PyString_FromString(buf);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	222 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	223
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	224
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	225 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	226 proxy_setattr(PyWeakReference proxy, PyObject name, PyObject *value)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	227 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	228 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	229 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	230 return PyObject_SetAttr(proxy->wr_object, name, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	231 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	232
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	233 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	234 proxy_compare(PyWeakReference proxy, PyObject v)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	235 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	236 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	237 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	238 return PyObject_Compare(proxy->wr_object, v);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	239 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	240
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	241 /* number slots */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	242 WRAP_BINARY(proxy_add, PyNumber_Add)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	243 WRAP_BINARY(proxy_sub, PyNumber_Subtract)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	244 WRAP_BINARY(proxy_mul, PyNumber_Multiply)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	245 WRAP_BINARY(proxy_div, PyNumber_Divide)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	246 WRAP_BINARY(proxy_mod, PyNumber_Remainder)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	247 WRAP_BINARY(proxy_divmod, PyNumber_Divmod)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	248 WRAP_TERNARY(proxy_pow, PyNumber_Power)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	249 WRAP_UNARY(proxy_neg, PyNumber_Negative)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	250 WRAP_UNARY(proxy_pos, PyNumber_Positive)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	251 WRAP_UNARY(proxy_abs, PyNumber_Absolute)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	252 WRAP_UNARY(proxy_invert, PyNumber_Invert)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	253 WRAP_BINARY(proxy_lshift, PyNumber_Lshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	254 WRAP_BINARY(proxy_rshift, PyNumber_Rshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	255 WRAP_BINARY(proxy_and, PyNumber_And)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	256 WRAP_BINARY(proxy_xor, PyNumber_Xor)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	257 WRAP_BINARY(proxy_or, PyNumber_Or)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	258 WRAP_UNARY(proxy_int, PyNumber_Int)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	259 WRAP_UNARY(proxy_long, PyNumber_Long)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	260 WRAP_UNARY(proxy_float, PyNumber_Float)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	261 WRAP_BINARY(proxy_iadd, PyNumber_InPlaceAdd)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	262 WRAP_BINARY(proxy_isub, PyNumber_InPlaceSubtract)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	263 WRAP_BINARY(proxy_imul, PyNumber_InPlaceMultiply)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	264 WRAP_BINARY(proxy_idiv, PyNumber_InPlaceDivide)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	265 WRAP_BINARY(proxy_imod, PyNumber_InPlaceRemainder)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	266 WRAP_TERNARY(proxy_ipow, PyNumber_InPlacePower)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	267 WRAP_BINARY(proxy_ilshift, PyNumber_InPlaceLshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	268 WRAP_BINARY(proxy_irshift, PyNumber_InPlaceRshift)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	269 WRAP_BINARY(proxy_iand, PyNumber_InPlaceAnd)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	270 WRAP_BINARY(proxy_ixor, PyNumber_InPlaceXor)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	271 WRAP_BINARY(proxy_ior, PyNumber_InPlaceOr)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	272
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	273 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	274 proxy_nonzero(PyWeakReference *proxy)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	275 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	276 PyObject *o = proxy->wr_object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	277 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	278 return 1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	279 if (o->ob_type->tp_as_number &&
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	280 o->ob_type->tp_as_number->nb_nonzero)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	281 return (*o->ob_type->tp_as_number->nb_nonzero)(o);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	282 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	283 return 1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	284 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	285
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	286 /* sequence slots */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	287
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	288 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	289 proxy_slice(PyWeakReference *proxy, int i, int j)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	290 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	291 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	292 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	293 return PySequence_GetSlice(proxy->wr_object, i, j);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	294 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	295
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	296 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	297 proxy_ass_slice(PyWeakReference proxy, int i, int j, PyObject value)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	298 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	299 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	300 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	301 return PySequence_SetSlice(proxy->wr_object, i, j, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	302 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	303
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	304 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	305 proxy_contains(PyWeakReference proxy, PyObject value)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	306 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	307 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	308 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	309 return PySequence_Contains(proxy->wr_object, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	310 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	311
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	312
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	313 /* mapping slots */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	314
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	315 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	316 proxy_length(PyWeakReference *proxy)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	317 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	318 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	319 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	320 return PyObject_Length(proxy->wr_object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	321 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	322
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	323 WRAP_BINARY(proxy_getitem, PyObject_GetItem)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	324
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	325 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	326 proxy_setitem(PyWeakReference proxy, PyObject key, PyObject *value)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	327 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	328 if (!proxy_checkref(proxy))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	329 return -1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	330 return PyObject_SetItem(proxy->wr_object, key, value);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	331 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	332
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	333
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	334 static PyNumberMethods proxy_as_number = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	335 (binaryfunc)proxy_add, /nb_add/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	336 (binaryfunc)proxy_sub, /nb_subtract/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	337 (binaryfunc)proxy_mul, /nb_multiply/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	338 (binaryfunc)proxy_div, /nb_divide/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	339 (binaryfunc)proxy_mod, /nb_remainder/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	340 (binaryfunc)proxy_divmod, /nb_divmod/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	341 (ternaryfunc)proxy_pow, /nb_power/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	342 (unaryfunc)proxy_neg, /nb_negative/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	343 (unaryfunc)proxy_pos, /nb_positive/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	344 (unaryfunc)proxy_abs, /nb_absolute/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	345 (inquiry)proxy_nonzero, /nb_nonzero/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	346 (unaryfunc)proxy_invert, /nb_invert/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	347 (binaryfunc)proxy_lshift, /nb_lshift/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	348 (binaryfunc)proxy_rshift, /nb_rshift/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	349 (binaryfunc)proxy_and, /nb_and/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	350 (binaryfunc)proxy_xor, /nb_xor/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	351 (binaryfunc)proxy_or, /nb_or/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	352 (coercion)0, /nb_coerce/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	353 (unaryfunc)proxy_int, /nb_int/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	354 (unaryfunc)proxy_long, /nb_long/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	355 (unaryfunc)proxy_float, /nb_float/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	356 (unaryfunc)0, /nb_oct/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	357 (unaryfunc)0, /nb_hex/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	358 (binaryfunc)proxy_iadd, /nb_inplace_add/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	359 (binaryfunc)proxy_isub, /nb_inplace_subtract/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	360 (binaryfunc)proxy_imul, /nb_inplace_multiply/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	361 (binaryfunc)proxy_idiv, /nb_inplace_divide/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	362 (binaryfunc)proxy_imod, /nb_inplace_remainder/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	363 (ternaryfunc)proxy_ipow, /nb_inplace_power/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	364 (binaryfunc)proxy_ilshift, /nb_inplace_lshift/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	365 (binaryfunc)proxy_irshift, /nb_inplace_rshift/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	366 (binaryfunc)proxy_iand, /nb_inplace_and/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	367 (binaryfunc)proxy_ixor, /nb_inplace_xor/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	368 (binaryfunc)proxy_ior, /nb_inplace_or/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	369 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	370
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	371 static PySequenceMethods proxy_as_sequence = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	372 (inquiry)proxy_length, /sq_length/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	373 0, /sq_concat/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	374 0, /sq_repeat/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	375 0, /sq_item/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	376 (intintargfunc)proxy_slice, /sq_slice/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	377 0, /sq_ass_item/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	378 (intintobjargproc)proxy_ass_slice, /sq_ass_slice/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	379 (objobjproc)proxy_contains, /* sq_contains */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	380 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	381
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	382 static PyMappingMethods proxy_as_mapping = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	383 (inquiry)proxy_length, /mp_length/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	384 (binaryfunc)proxy_getitem, /mp_subscript/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	385 (objobjargproc)proxy_setitem, /mp_ass_subscript/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	386 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	387
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	388
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	389 static PyTypeObject
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	390 PyWeakProxy_Type = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	391 PyObject_HEAD_INIT(NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	392 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	393 "weakproxy",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	394 sizeof(PyWeakReference) + PyGC_HEAD_SIZE,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	395 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	396 /* methods */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	397 (destructor)weakref_dealloc,/tp_dealloc/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	398 (printfunc)proxy_print, /tp_print/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	399 0, /tp_getattr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	400 0, /tp_setattr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	401 (cmpfunc)proxy_compare, /tp_compare/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	402 (unaryfunc)proxy_repr, /tp_repr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	403 &proxy_as_number, /tp_as_number/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	404 &proxy_as_sequence, /tp_as_sequence/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	405 &proxy_as_mapping, /tp_as_mapping/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	406 0, /tp_hash/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	407 (ternaryfunc)0, /tp_call/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	408 (unaryfunc)proxy_str, /tp_str/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	409 (getattrofunc)proxy_getattr,/tp_getattro/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	410 (setattrofunc)proxy_setattr,/tp_setattro/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	411 0, /tp_as_buffer/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	412 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_GC
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	413 \|Py_TPFLAGS_CHECKTYPES, /tp_flags/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	414 0, /tp_doc/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	415 (traverseproc)gc_traverse, /tp_traverse/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	416 (inquiry)gc_clear, /tp_clear/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	417 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	418
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	419
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	420 static PyTypeObject
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	421 PyWeakCallableProxy_Type = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	422 PyObject_HEAD_INIT(NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	423 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	424 "weakcallableproxy",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	425 sizeof(PyWeakReference) + PyGC_HEAD_SIZE,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	426 0,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	427 /* methods */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	428 (destructor)weakref_dealloc,/tp_dealloc/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	429 (printfunc)proxy_print, /tp_print/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	430 0, /tp_getattr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	431 0, /tp_setattr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	432 (cmpfunc)proxy_compare, /tp_compare/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	433 (unaryfunc)proxy_repr, /tp_repr/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	434 &proxy_as_number, /tp_as_number/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	435 &proxy_as_sequence, /tp_as_sequence/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	436 &proxy_as_mapping, /tp_as_mapping/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	437 0, /tp_hash/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	438 (ternaryfunc)proxy_call, /tp_call/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	439 (unaryfunc)proxy_str, /tp_str/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	440 (getattrofunc)proxy_getattr,/tp_getattro/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	441 (setattrofunc)proxy_setattr,/tp_setattro/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	442 0, /tp_as_buffer/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	443 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_GC
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	444 \|Py_TPFLAGS_CHECKTYPES, /tp_flags/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	445 0, /tp_doc/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	446 (traverseproc)gc_traverse, /tp_traverse/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	447 (inquiry)gc_clear, /tp_clear/
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	448 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	449
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	450
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	451 static long
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	452 getweakrefcount(PyWeakReference *head)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	453 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	454 long count = 0;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	455
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	456 while (head != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	457 ++count;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	458 head = head->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	459 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	460 return count;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	461 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	462
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	463
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	464 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	465 weakref_getweakrefcount(PyObject self, PyObject args)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	466 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	467 PyObject *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	468 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	469
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	470 if (PyArg_ParseTuple(args, "O:getweakrefcount", &object)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	471 if (PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	472 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	473
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	474 result = PyInt_FromLong(getweakrefcount(*list));
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	475 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	476 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	477 result = PyInt_FromLong(0);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	478 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	479 return result;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	480 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	481
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	482
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	483 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	484 weakref_getweakrefs(PyObject self, PyObject args)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	485 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	486 PyObject *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	487 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	488
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	489 if (PyArg_ParseTuple(args, "O:getweakrefs", &object)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	490 if (PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	491 PyWeakReference **list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	492 long count = getweakrefcount(*list);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	493
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	494 result = PyList_New(count);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	495 if (result != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	496 PyWeakReference current = list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	497 long i;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	498 for (i = 0; i < count; ++i) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	499 PyList_SET_ITEM(result, i, (PyObject *) current);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	500 Py_INCREF(current);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	501 current = current->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	502 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	503 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	504 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	505 else {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	506 result = PyList_New(0);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	507 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	508 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	509 return result;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	510 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	511
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	512
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	513 /* Given the head of an object's list of weak references, extract the
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	514 * two callback-less refs (ref and proxy). Used to determine if the
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	515 * shared references exist and to determine the back link for newly
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	516 * inserted references.
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	517 */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	518 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	519 get_basic_refs(PyWeakReference *head,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	520 PyWeakReference refp, PyWeakReference proxyp)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	521 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	522 *refp = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	523 *proxyp = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	524
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	525 if (head != NULL && head->wr_callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	526 if (head->ob_type == &PyWeakReference_Type) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	527 *refp = head;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	528 head = head->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	529 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	530 if (head != NULL && head->wr_callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	531 *proxyp = head;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	532 head = head->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	533 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	534 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	535 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	536
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	537 /* Insert 'newref' in the list after 'prev'. Both must be non-NULL. */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	538 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	539 insert_after(PyWeakReference newref, PyWeakReference prev)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	540 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	541 newref->wr_prev = prev;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	542 newref->wr_next = prev->wr_next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	543 if (prev->wr_next != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	544 prev->wr_next->wr_prev = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	545 prev->wr_next = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	546 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	547
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	548 /* Insert 'newref' at the head of the list; 'list' points to the variable
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	549 * that stores the head.
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	550 */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	551 static void
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	552 insert_head(PyWeakReference newref, PyWeakReference *list)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	553 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	554 PyWeakReference next = list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	555
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	556 newref->wr_prev = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	557 newref->wr_next = next;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	558 if (next != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	559 next->wr_prev = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	560 *list = newref;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	561 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	562
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	563
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	564 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	565 weakref_ref(PyObject self, PyObject args)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	566 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	567 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	568 PyObject *callback = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	569 PyWeakReference *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	570
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	571 if (PyArg_ParseTuple(args, "O\|O:new", &object, &callback)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	572 PyWeakReference **list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	573 PyWeakReference ref, proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	574
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	575 if (!PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	576 PyErr_Format(PyExc_TypeError,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	577 "'%s' objects are not weakly referencable",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	578 object->ob_type->tp_name);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	579 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	580 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	581 list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	582 get_basic_refs(*list, &ref, &proxy);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	583 if (callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	584 /* return existing weak reference if it exists */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	585 result = ref;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	586 Py_XINCREF(result);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	587 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	588 if (result == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	589 result = new_weakref();
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	590 if (result != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	591 Py_XINCREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	592 result->wr_callback = callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	593 result->wr_object = object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	594 if (callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	595 insert_head(result, list);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	596 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	597 else {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	598 PyWeakReference *prev = (proxy == NULL) ? ref : proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	599
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	600 if (prev == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	601 insert_head(result, list);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	602 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	603 insert_after(result, prev);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	604 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	605 PyObject_GC_Init((PyObject *) result);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	606 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	607 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	608 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	609 return (PyObject *) result;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	610 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	611
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	612
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	613 static PyObject *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	614 weakref_proxy(PyObject self, PyObject args)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	615 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	616 PyObject *object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	617 PyObject *callback = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	618 PyWeakReference *result = NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	619
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	620 if (PyArg_ParseTuple(args, "O\|O:new", &object, &callback)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	621 PyWeakReference **list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	622 PyWeakReference ref, proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	623
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	624 if (!PyType_SUPPORTS_WEAKREFS(object->ob_type)) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	625 PyErr_Format(PyExc_TypeError,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	626 "'%s' objects are not weakly referencable",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	627 object->ob_type->tp_name);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	628 return NULL;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	629 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	630 list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	631 get_basic_refs(*list, &ref, &proxy);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	632 if (callback == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	633 /* attempt to return an existing weak reference if it exists */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	634 result = proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	635 Py_XINCREF(result);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	636 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	637 if (result == NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	638 result = new_weakref();
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	639 if (result != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	640 PyWeakReference *prev;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	641
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	642 if (PyCallable_Check(object))
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	643 result->ob_type = &PyWeakCallableProxy_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	644 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	645 result->ob_type = &PyWeakProxy_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	646 result->wr_object = object;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	647 Py_XINCREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	648 result->wr_callback = callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	649 if (callback == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	650 prev = ref;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	651 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	652 prev = (proxy == NULL) ? ref : proxy;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	653
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	654 if (prev == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	655 insert_head(result, list);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	656 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	657 insert_after(result, prev);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	658 PyObject_GC_Init((PyObject *) result);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	659 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	660 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	661 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	662 return (PyObject *) result;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	663 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	664
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	665
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	666 /* This is the implementation of the PyObject_ClearWeakRefs() function; it
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	667 * is installed in the init_weakref() function. It is called by the
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	668 * tp_dealloc handler to clear weak references.
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	669 *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	670 * This returns true if the object should be deallocated, and false if the
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	671 * object is resurrected and deallocation should be aborted.
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	672 *
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	673 * This iterates through the weak references for 'object' and calls callbacks
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	674 * until one resurrects the object, at which point it stops invalidating
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	675 * weak references and returns false.
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	676 */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	677 static int
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	678 cleanup_helper(PyObject *object)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	679 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	680 PyWeakReference **list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	681
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	682 if (object == NULL
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	683 \|\| !PyType_SUPPORTS_WEAKREFS(object->ob_type)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	684 \|\| object->ob_refcnt != 0) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	685 PyErr_BadInternalCall();
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	686 /* not sure what we should return here */
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	687 return 1;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	688 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	689 list = GET_WEAKREFS_LISTPTR(object);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	690 while (*list != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	691 PyWeakReference current = list;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	692 PyObject *callback = current->wr_callback;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	693
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	694 Py_XINCREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	695 clear_weakref(current);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	696 if (callback != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	697 PyObject *cbresult;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	698
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	699 cbresult = PyObject_CallFunction(callback, "O", current);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	700 if (cbresult == NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	701 PyErr_WriteUnraisable(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	702 else
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	703 Py_DECREF(cbresult);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	704 Py_DECREF(callback);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	705 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	706 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	707 return (object->ob_refcnt > 0 ? 0 : 1);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	708 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	709
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	710
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	711 static PyMethodDef
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	712 weakref_functions[] = {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	713 {"getweakrefcount", weakref_getweakrefcount, METH_VARARGS,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	714 "getweakrefcount(object) -- return the number of weak references\n"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	715 "to 'object'."},
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	716 {"getweakrefs", weakref_getweakrefs, METH_VARARGS,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	717 "getweakrefs(object) -- return a list of all weak reference objects\n"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	718 "that point to 'object'."},
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	719 {"proxy", weakref_proxy, METH_VARARGS,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	720 "proxy(object[, callback]) -- create a proxy object that weakly\n"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	721 "references 'object'. 'callback', if given, is called with a\n"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	722 "reference to 'object' when it is about to be finalized."},
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	723 {"ref", weakref_ref, METH_VARARGS,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	724 "new(object[, callback]) -- create a weak reference to 'object';\n"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	725 "when 'object' is finalized, 'callback' will be called and passed\n"
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	726 "a reference to 'object'."},
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	727 {NULL, NULL, 0, NULL}
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	728 };
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	729
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	730
16402 08ac556f2d12 Teach Windows build about the _weakref module. Tim Peters <tim.peters@gmail.com> parents: 16385 diff changeset	731 DL_EXPORT(void)
16385 1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	732 init_weakref(void)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	733 {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	734 PyObject *m;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	735
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	736 PyWeakReference_Type.ob_type = &PyType_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	737 PyWeakProxy_Type.ob_type = &PyType_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	738 PyWeakCallableProxy_Type.ob_type = &PyType_Type;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	739 m = Py_InitModule3("_weakref", weakref_functions,
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	740 "Weak-reference support module.");
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	741 if (m != NULL) {
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	742 PyObject_ClearWeakRefs = cleanup_helper;
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	743 Py_INCREF(&PyWeakReference_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	744 PyModule_AddObject(m, "ReferenceType",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	745 (PyObject *) &PyWeakReference_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	746 Py_INCREF(&PyWeakProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	747 PyModule_AddObject(m, "ProxyType",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	748 (PyObject *) &PyWeakProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	749 Py_INCREF(&PyWeakCallableProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	750 PyModule_AddObject(m, "CallableProxyType",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	751 (PyObject *) &PyWeakCallableProxy_Type);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	752 ReferenceError = PyErr_NewException("weakref.ReferenceError",
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	753 PyExc_RuntimeError, NULL);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	754 if (ReferenceError != NULL)
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	755 PyModule_AddObject(m, "ReferenceError", ReferenceError);
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	756 }
1fb6672b20ef PEP 205, Weak References -- initial checkin. Fred Drake <fdrake@acm.org> parents: diff changeset	757 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/_weakref.c @ 16413:8819867f14ef legacy-trunk