Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2 | /* Class object implementation */ |
| 3 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 5 | #include "structmember.h" |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 6 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 7 | |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 8 | /* Forward */ |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 9 | static PyObject *class_lookup(PyClassObject *, PyObject *, |
| 10 | PyClassObject **); |
| 11 | static PyObject *instance_getattr1(PyInstanceObject *, PyObject *); |
| 12 | static PyObject *instance_getattr2(PyInstanceObject *, PyObject *); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 13 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 14 | static PyObject *getattrstr, *setattrstr, *delattrstr; |
| 15 | |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 17 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 18 | PyClass_New(PyObject *bases, PyObject *dict, PyObject *name) |
| 19 | /* bases is NULL or tuple of classobjects! */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 20 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 21 | PyClassObject *op, *dummy; |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 22 | static PyObject *docstr, *modstr, *namestr; |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 23 | if (docstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 24 | docstr= PyString_InternFromString("__doc__"); |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 25 | if (docstr == NULL) |
| 26 | return NULL; |
| 27 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 28 | if (modstr == NULL) { |
| 29 | modstr= PyString_InternFromString("__module__"); |
| 30 | if (modstr == NULL) |
| 31 | return NULL; |
| 32 | } |
| 33 | if (namestr == NULL) { |
| 34 | namestr= PyString_InternFromString("__name__"); |
| 35 | if (namestr == NULL) |
| 36 | return NULL; |
| 37 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 38 | if (name == NULL || !PyString_Check(name)) { |
| 39 | PyErr_SetString(PyExc_SystemError, |
| 40 | "PyClass_New: name must be a string"); |
| 41 | return NULL; |
| 42 | } |
| 43 | if (dict == NULL || !PyDict_Check(dict)) { |
| 44 | PyErr_SetString(PyExc_SystemError, |
| 45 | "PyClass_New: dict must be a dictionary"); |
| 46 | return NULL; |
| 47 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 48 | if (PyDict_GetItem(dict, docstr) == NULL) { |
| 49 | if (PyDict_SetItem(dict, docstr, Py_None) < 0) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 50 | return NULL; |
| 51 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 52 | if (PyDict_GetItem(dict, modstr) == NULL) { |
| 53 | PyObject *globals = PyEval_GetGlobals(); |
| 54 | if (globals != NULL) { |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 55 | PyObject *modname = PyDict_GetItem(globals, namestr); |
| 56 | if (modname != NULL) { |
| 57 | if (PyDict_SetItem(dict, modstr, modname) < 0) |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 58 | return NULL; |
| 59 | } |
| 60 | } |
| 61 | } |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 62 | if (bases == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 63 | bases = PyTuple_New(0); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 64 | if (bases == NULL) |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 65 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 66 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 67 | else { |
| 68 | int i; |
| 69 | if (!PyTuple_Check(bases)) { |
| 70 | PyErr_SetString(PyExc_SystemError, |
| 71 | "PyClass_New: bases must be a tuple"); |
| 72 | return NULL; |
| 73 | } |
| 74 | i = PyTuple_Size(bases); |
| 75 | while (--i >= 0) { |
| 76 | if (!PyClass_Check(PyTuple_GetItem(bases, i))) { |
| 77 | PyErr_SetString(PyExc_SystemError, |
| 78 | "PyClass_New: base must be a class"); |
| 79 | return NULL; |
| 80 | } |
| 81 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 82 | Py_INCREF(bases); |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 83 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 84 | op = PyObject_NEW(PyClassObject, &PyClass_Type); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 85 | if (op == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 86 | Py_DECREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 87 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 88 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 89 | op->cl_bases = bases; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 90 | Py_INCREF(dict); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 91 | op->cl_dict = dict; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 92 | Py_XINCREF(name); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 93 | op->cl_name = name; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 94 | if (getattrstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 95 | getattrstr = PyString_InternFromString("__getattr__"); |
| 96 | setattrstr = PyString_InternFromString("__setattr__"); |
| 97 | delattrstr = PyString_InternFromString("__delattr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 98 | } |
| 99 | op->cl_getattr = class_lookup(op, getattrstr, &dummy); |
| 100 | op->cl_setattr = class_lookup(op, setattrstr, &dummy); |
| 101 | op->cl_delattr = class_lookup(op, delattrstr, &dummy); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 102 | Py_XINCREF(op->cl_getattr); |
| 103 | Py_XINCREF(op->cl_setattr); |
| 104 | Py_XINCREF(op->cl_delattr); |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 105 | PyObject_GC_Init(op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 106 | return (PyObject *) op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | /* Class methods */ |
| 110 | |
| 111 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 112 | class_dealloc(PyClassObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 113 | { |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 114 | PyObject_GC_Fini(op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 115 | Py_DECREF(op->cl_bases); |
| 116 | Py_DECREF(op->cl_dict); |
| 117 | Py_XDECREF(op->cl_name); |
Guido van Rossum | 152d817 | 1998-08-04 14:59:16 +0000 | [diff] [blame] | 118 | Py_XDECREF(op->cl_getattr); |
| 119 | Py_XDECREF(op->cl_setattr); |
| 120 | Py_XDECREF(op->cl_delattr); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 121 | op = (PyClassObject *) PyObject_AS_GC(op); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 122 | PyObject_DEL(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 125 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 126 | class_lookup(PyClassObject *cp, PyObject *name, PyClassObject **pclass) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 127 | { |
| 128 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 129 | PyObject *value = PyDict_GetItem(cp->cl_dict, name); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 130 | if (value != NULL) { |
| 131 | *pclass = cp; |
| 132 | return value; |
| 133 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 134 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 135 | for (i = 0; i < n; i++) { |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 136 | /* XXX What if one of the bases is not a class? */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 137 | PyObject *v = class_lookup( |
| 138 | (PyClassObject *) |
| 139 | PyTuple_GetItem(cp->cl_bases, i), name, pclass); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 140 | if (v != NULL) |
| 141 | return v; |
| 142 | } |
| 143 | return NULL; |
| 144 | } |
| 145 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 146 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 147 | class_getattr(register PyClassObject *op, PyObject *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 148 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 149 | register PyObject *v; |
| 150 | register char *sname = PyString_AsString(name); |
| 151 | PyClassObject *class; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 152 | if (sname[0] == '_' && sname[1] == '_') { |
| 153 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 154 | if (PyEval_GetRestricted()) { |
| 155 | PyErr_SetString(PyExc_RuntimeError, |
| 156 | "class.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 157 | return NULL; |
| 158 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 159 | Py_INCREF(op->cl_dict); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 160 | return op->cl_dict; |
| 161 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 162 | if (strcmp(sname, "__bases__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 163 | Py_INCREF(op->cl_bases); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 164 | return op->cl_bases; |
| 165 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 166 | if (strcmp(sname, "__name__") == 0) { |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 167 | if (op->cl_name == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 168 | v = Py_None; |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 169 | else |
| 170 | v = op->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 171 | Py_INCREF(v); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 172 | return v; |
| 173 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 174 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 175 | v = class_lookup(op, name, &class); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 176 | if (v == NULL) { |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 177 | PyErr_Format(PyExc_AttributeError, |
| 178 | "class %.50s has no attribute '%.400s'", |
| 179 | PyString_AS_STRING(op->cl_name), sname); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 180 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 181 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 182 | Py_INCREF(v); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 183 | if (PyFunction_Check(v)) { |
| 184 | PyObject *w = PyMethod_New(v, (PyObject *)NULL, |
| 185 | (PyObject *)class); |
| 186 | Py_DECREF(v); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 187 | v = w; |
| 188 | } |
| 189 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 190 | } |
| 191 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 192 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 193 | set_slot(PyObject **slot, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 194 | { |
| 195 | PyObject *temp = *slot; |
| 196 | Py_XINCREF(v); |
| 197 | *slot = v; |
| 198 | Py_XDECREF(temp); |
| 199 | } |
| 200 | |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 201 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 202 | set_attr_slots(PyClassObject *c) |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 203 | { |
| 204 | PyClassObject *dummy; |
| 205 | |
| 206 | set_slot(&c->cl_getattr, class_lookup(c, getattrstr, &dummy)); |
| 207 | set_slot(&c->cl_setattr, class_lookup(c, setattrstr, &dummy)); |
| 208 | set_slot(&c->cl_delattr, class_lookup(c, delattrstr, &dummy)); |
| 209 | } |
| 210 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 211 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 212 | set_dict(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 213 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 214 | if (v == NULL || !PyDict_Check(v)) |
| 215 | return "__dict__ must be a dictionary object"; |
| 216 | set_slot(&c->cl_dict, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 217 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 218 | return ""; |
| 219 | } |
| 220 | |
| 221 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 222 | set_bases(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 223 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 224 | int i, n; |
| 225 | |
| 226 | if (v == NULL || !PyTuple_Check(v)) |
| 227 | return "__bases__ must be a tuple object"; |
| 228 | n = PyTuple_Size(v); |
| 229 | for (i = 0; i < n; i++) { |
| 230 | PyObject *x = PyTuple_GET_ITEM(v, i); |
| 231 | if (!PyClass_Check(x)) |
| 232 | return "__bases__ items must be classes"; |
| 233 | if (PyClass_IsSubclass(x, (PyObject *)c)) |
| 234 | return "a __bases__ item causes an inheritance cycle"; |
| 235 | } |
| 236 | set_slot(&c->cl_bases, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 237 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 238 | return ""; |
| 239 | } |
| 240 | |
| 241 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 242 | set_name(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 243 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 244 | if (v == NULL || !PyString_Check(v)) |
| 245 | return "__name__ must be a string object"; |
Guido van Rossum | ad89bbc | 2000-06-28 21:57:18 +0000 | [diff] [blame] | 246 | if (strlen(PyString_AS_STRING(v)) != (size_t)PyString_GET_SIZE(v)) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 247 | return "__name__ must not contain null bytes"; |
| 248 | set_slot(&c->cl_name, v); |
| 249 | return ""; |
| 250 | } |
| 251 | |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 252 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 253 | class_setattr(PyClassObject *op, PyObject *name, PyObject *v) |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 254 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 255 | char *sname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 256 | if (PyEval_GetRestricted()) { |
| 257 | PyErr_SetString(PyExc_RuntimeError, |
Guido van Rossum | ac21f6a | 1995-08-04 04:05:31 +0000 | [diff] [blame] | 258 | "classes are read-only in restricted mode"); |
| 259 | return -1; |
| 260 | } |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 261 | sname = PyString_AsString(name); |
| 262 | if (sname[0] == '_' && sname[1] == '_') { |
| 263 | int n = PyString_Size(name); |
| 264 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 265 | char *err = NULL; |
| 266 | if (strcmp(sname, "__dict__") == 0) |
| 267 | err = set_dict(op, v); |
| 268 | else if (strcmp(sname, "__bases__") == 0) |
| 269 | err = set_bases(op, v); |
| 270 | else if (strcmp(sname, "__name__") == 0) |
| 271 | err = set_name(op, v); |
| 272 | else if (strcmp(sname, "__getattr__") == 0) |
| 273 | set_slot(&op->cl_getattr, v); |
| 274 | else if (strcmp(sname, "__setattr__") == 0) |
| 275 | set_slot(&op->cl_setattr, v); |
| 276 | else if (strcmp(sname, "__delattr__") == 0) |
| 277 | set_slot(&op->cl_delattr, v); |
| 278 | /* For the last three, we fall through to update the |
| 279 | dictionary as well. */ |
| 280 | if (err != NULL) { |
| 281 | if (*err == '\0') |
| 282 | return 0; |
| 283 | PyErr_SetString(PyExc_TypeError, err); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 284 | return -1; |
| 285 | } |
| 286 | } |
| 287 | } |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 288 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 289 | int rv = PyDict_DelItem(op->cl_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 290 | if (rv < 0) |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 291 | PyErr_Format(PyExc_AttributeError, |
| 292 | "class %.50s has no attribute '%.400s'", |
| 293 | PyString_AS_STRING(op->cl_name), sname); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 294 | return rv; |
| 295 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 296 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 297 | return PyDict_SetItem(op->cl_dict, name, v); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 298 | } |
| 299 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 300 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 301 | class_repr(PyClassObject *op) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 302 | { |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 303 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 304 | char buf[140]; |
| 305 | char *name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 306 | if (op->cl_name == NULL || !PyString_Check(op->cl_name)) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 307 | name = "?"; |
| 308 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 309 | name = PyString_AsString(op->cl_name); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 310 | if (mod == NULL || !PyString_Check(mod)) |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 311 | sprintf(buf, "<class ?.%.100s at %p>", name, op); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 312 | else |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 313 | sprintf(buf, "<class %.50s.%.50s at %p>", |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 314 | PyString_AsString(mod), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 315 | name, op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 316 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 317 | } |
| 318 | |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 319 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 320 | class_str(PyClassObject *op) |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 321 | { |
| 322 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
| 323 | PyObject *name = op->cl_name; |
| 324 | PyObject *res; |
| 325 | int m, n; |
| 326 | |
| 327 | if (name == NULL || !PyString_Check(name)) |
| 328 | return class_repr(op); |
| 329 | if (mod == NULL || !PyString_Check(mod)) { |
| 330 | Py_INCREF(name); |
| 331 | return name; |
| 332 | } |
| 333 | m = PyString_Size(mod); |
| 334 | n = PyString_Size(name); |
| 335 | res = PyString_FromStringAndSize((char *)NULL, m+1+n); |
| 336 | if (res != NULL) { |
| 337 | char *s = PyString_AsString(res); |
| 338 | memcpy(s, PyString_AsString(mod), m); |
| 339 | s += m; |
| 340 | *s++ = '.'; |
| 341 | memcpy(s, PyString_AsString(name), n); |
| 342 | } |
| 343 | return res; |
| 344 | } |
| 345 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 346 | static int |
| 347 | class_traverse(PyClassObject *o, visitproc visit, void *arg) |
| 348 | { |
| 349 | int err; |
| 350 | if (o->cl_bases) { |
| 351 | err = visit(o->cl_bases, arg); |
| 352 | if (err) |
| 353 | return err; |
| 354 | } |
| 355 | if (o->cl_dict) { |
| 356 | err = visit(o->cl_dict, arg); |
| 357 | if (err) |
| 358 | return err; |
| 359 | } |
| 360 | if (o->cl_name) { |
| 361 | err = visit(o->cl_name, arg); |
| 362 | if (err) |
| 363 | return err; |
| 364 | } |
| 365 | if (o->cl_getattr) { |
| 366 | err = visit(o->cl_getattr, arg); |
| 367 | if (err) |
| 368 | return err; |
| 369 | } |
| 370 | if (o->cl_setattr) { |
| 371 | err = visit(o->cl_setattr, arg); |
| 372 | if (err) |
| 373 | return err; |
| 374 | } |
| 375 | if (o->cl_delattr) { |
| 376 | err = visit(o->cl_delattr, arg); |
| 377 | if (err) |
| 378 | return err; |
| 379 | } |
| 380 | return 0; |
| 381 | } |
| 382 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 383 | PyTypeObject PyClass_Type = { |
| 384 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 385 | 0, |
| 386 | "class", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 387 | sizeof(PyClassObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 388 | 0, |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 389 | (destructor)class_dealloc, /* tp_dealloc */ |
| 390 | 0, /* tp_print */ |
| 391 | 0, /* tp_getattr */ |
| 392 | 0, /* tp_setattr */ |
| 393 | 0, /* tp_compare */ |
| 394 | (reprfunc)class_repr, /* tp_repr */ |
| 395 | 0, /* tp_as_number */ |
| 396 | 0, /* tp_as_sequence */ |
| 397 | 0, /* tp_as_mapping */ |
| 398 | 0, /* tp_hash */ |
| 399 | 0, /* tp_call */ |
| 400 | (reprfunc)class_str, /* tp_str */ |
| 401 | (getattrofunc)class_getattr, /* tp_getattro */ |
| 402 | (setattrofunc)class_setattr, /* tp_setattro */ |
| 403 | 0, /* tp_as_buffer */ |
| 404 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /* tp_flags */ |
| 405 | 0, /* tp_doc */ |
| 406 | (traverseproc)class_traverse, /* tp_traverse */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 407 | }; |
| 408 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 409 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 410 | PyClass_IsSubclass(PyObject *class, PyObject *base) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 411 | { |
| 412 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 413 | PyClassObject *cp; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 414 | if (class == base) |
| 415 | return 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 416 | if (class == NULL || !PyClass_Check(class)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 417 | return 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 418 | cp = (PyClassObject *)class; |
| 419 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 420 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 421 | if (PyClass_IsSubclass(PyTuple_GetItem(cp->cl_bases, i), base)) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 422 | return 1; |
| 423 | } |
| 424 | return 0; |
| 425 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 426 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 427 | |
| 428 | /* Instance objects */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 429 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 430 | PyObject * |
Fred Drake | 5cc2c8c | 2001-01-28 03:53:08 +0000 | [diff] [blame] | 431 | PyInstance_NewRaw(PyObject *klass, PyObject *dict) |
| 432 | { |
| 433 | PyInstanceObject *inst; |
| 434 | |
| 435 | if (!PyClass_Check(klass)) { |
| 436 | PyErr_BadInternalCall(); |
| 437 | return NULL; |
| 438 | } |
| 439 | if (dict == NULL) { |
| 440 | dict = PyDict_New(); |
| 441 | if (dict == NULL) |
| 442 | return NULL; |
| 443 | } |
| 444 | else { |
| 445 | if (!PyDict_Check(dict)) { |
| 446 | PyErr_BadInternalCall(); |
| 447 | return NULL; |
| 448 | } |
| 449 | Py_INCREF(dict); |
| 450 | } |
| 451 | inst = PyObject_NEW(PyInstanceObject, &PyInstance_Type); |
| 452 | if (inst == NULL) { |
| 453 | Py_DECREF(dict); |
| 454 | return NULL; |
| 455 | } |
| 456 | Py_INCREF(klass); |
| 457 | inst->in_class = (PyClassObject *)klass; |
| 458 | inst->in_dict = dict; |
| 459 | PyObject_GC_Init(inst); |
| 460 | return (PyObject *)inst; |
| 461 | } |
| 462 | |
| 463 | PyObject * |
| 464 | PyInstance_New(PyObject *klass, PyObject *arg, PyObject *kw) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 465 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 466 | register PyInstanceObject *inst; |
| 467 | PyObject *init; |
| 468 | static PyObject *initstr; |
Fred Drake | 5cc2c8c | 2001-01-28 03:53:08 +0000 | [diff] [blame] | 469 | |
| 470 | inst = (PyInstanceObject *) PyInstance_NewRaw(klass, NULL); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 471 | if (inst == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 472 | return NULL; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 473 | if (initstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 474 | initstr = PyString_InternFromString("__init__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 475 | init = instance_getattr2(inst, initstr); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 476 | if (init == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 477 | if ((arg != NULL && (!PyTuple_Check(arg) || |
| 478 | PyTuple_Size(arg) != 0)) |
| 479 | || (kw != NULL && (!PyDict_Check(kw) || |
| 480 | PyDict_Size(kw) != 0))) { |
| 481 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | a83f270 | 1995-07-26 18:07:32 +0000 | [diff] [blame] | 482 | "this constructor takes no arguments"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 483 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 484 | inst = NULL; |
| 485 | } |
| 486 | } |
| 487 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 488 | PyObject *res = PyEval_CallObjectWithKeywords(init, arg, kw); |
| 489 | Py_DECREF(init); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 490 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 491 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 492 | inst = NULL; |
| 493 | } |
| 494 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 495 | if (res != Py_None) { |
| 496 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 497 | "__init__() should return None"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 498 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 499 | inst = NULL; |
| 500 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 501 | Py_DECREF(res); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 502 | } |
| 503 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 504 | return (PyObject *)inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 505 | } |
| 506 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 507 | /* Instance methods */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 508 | |
| 509 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 510 | instance_dealloc(register PyInstanceObject *inst) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 511 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 512 | PyObject *error_type, *error_value, *error_traceback; |
| 513 | PyObject *del; |
| 514 | static PyObject *delstr; |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 515 | #ifdef Py_REF_DEBUG |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 516 | extern long _Py_RefTotal; |
Skip Montanaro | 4ca150b | 2000-07-08 12:04:57 +0000 | [diff] [blame] | 517 | #endif |
Fred Drake | 41deb1e | 2001-02-01 05:27:45 +0000 | [diff] [blame] | 518 | |
| 519 | if (!PyObject_ClearWeakRefs((PyObject *) inst)) |
| 520 | return; |
| 521 | |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 522 | /* Temporarily resurrect the object. */ |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 523 | #ifdef Py_TRACE_REFS |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 524 | #ifndef Py_REF_DEBUG |
| 525 | # error "Py_TRACE_REFS defined but Py_REF_DEBUG not." |
| 526 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 527 | /* much too complicated if Py_TRACE_REFS defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 528 | inst->ob_type = &PyInstance_Type; |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 529 | _Py_NewReference((PyObject *)inst); |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 530 | #ifdef COUNT_ALLOCS |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 531 | /* compensate for boost in _Py_NewReference; note that |
| 532 | * _Py_RefTotal was also boosted; we'll knock that down later. |
| 533 | */ |
| 534 | inst->ob_type->tp_alloc--; |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 535 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 536 | #else /* !Py_TRACE_REFS */ |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 537 | /* Py_INCREF boosts _Py_RefTotal if Py_REF_DEBUG is defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 538 | Py_INCREF(inst); |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 539 | #endif /* !Py_TRACE_REFS */ |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 540 | |
| 541 | /* Save the current exception, if any. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 542 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 543 | /* Execute __del__ method, if any. */ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 544 | if (delstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 545 | delstr = PyString_InternFromString("__del__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 546 | if ((del = instance_getattr2(inst, delstr)) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 547 | PyObject *res = PyEval_CallObject(del, (PyObject *)NULL); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 548 | if (res == NULL) |
Jeremy Hylton | b709df3 | 2000-09-01 02:47:25 +0000 | [diff] [blame] | 549 | PyErr_WriteUnraisable(del); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 550 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 551 | Py_DECREF(res); |
| 552 | Py_DECREF(del); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 553 | } |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 554 | /* Restore the saved exception. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 555 | PyErr_Restore(error_type, error_value, error_traceback); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 556 | /* Undo the temporary resurrection; can't use DECREF here, it would |
| 557 | * cause a recursive call. |
| 558 | */ |
| 559 | #ifdef Py_REF_DEBUG |
| 560 | /* _Py_RefTotal was boosted either by _Py_NewReference or |
| 561 | * Py_INCREF above. |
| 562 | */ |
| 563 | _Py_RefTotal--; |
| 564 | #endif |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 565 | if (--inst->ob_refcnt > 0) { |
| 566 | #ifdef COUNT_ALLOCS |
| 567 | inst->ob_type->tp_free--; |
| 568 | #endif |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 569 | return; /* __del__ added a reference; don't delete now */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 570 | } |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 571 | #ifdef Py_TRACE_REFS |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 572 | _Py_ForgetReference((PyObject *)inst); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 573 | #ifdef COUNT_ALLOCS |
| 574 | /* compensate for increment in _Py_ForgetReference */ |
| 575 | inst->ob_type->tp_free--; |
| 576 | #endif |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 577 | #ifndef WITH_CYCLE_GC |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 578 | inst->ob_type = NULL; |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 579 | #endif |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 580 | #endif |
Neil Schemenauer | ce20967 | 2000-09-15 18:57:21 +0000 | [diff] [blame] | 581 | PyObject_GC_Fini(inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 582 | Py_DECREF(inst->in_class); |
| 583 | Py_XDECREF(inst->in_dict); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 584 | inst = (PyInstanceObject *) PyObject_AS_GC(inst); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 585 | PyObject_DEL(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 586 | } |
| 587 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 588 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 589 | instance_getattr1(register PyInstanceObject *inst, PyObject *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 590 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 591 | register PyObject *v; |
| 592 | register char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 593 | if (sname[0] == '_' && sname[1] == '_') { |
| 594 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 595 | if (PyEval_GetRestricted()) { |
| 596 | PyErr_SetString(PyExc_RuntimeError, |
| 597 | "instance.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 598 | return NULL; |
| 599 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 600 | Py_INCREF(inst->in_dict); |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 601 | return inst->in_dict; |
| 602 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 603 | if (strcmp(sname, "__class__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 604 | Py_INCREF(inst->in_class); |
| 605 | return (PyObject *)inst->in_class; |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 606 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 607 | } |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 608 | v = instance_getattr2(inst, name); |
| 609 | if (v == NULL) { |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 610 | PyErr_Format(PyExc_AttributeError, |
| 611 | "%.50s instance has no attribute '%.400s'", |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 612 | PyString_AS_STRING(inst->in_class->cl_name), sname); |
| 613 | } |
| 614 | return v; |
| 615 | } |
| 616 | |
| 617 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 618 | instance_getattr2(register PyInstanceObject *inst, PyObject *name) |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 619 | { |
| 620 | register PyObject *v; |
| 621 | PyClassObject *class; |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 622 | class = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 623 | v = PyDict_GetItem(inst->in_dict, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 624 | if (v == NULL) { |
| 625 | v = class_lookup(inst->in_class, name, &class); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 626 | if (v == NULL) |
| 627 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 628 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 629 | Py_INCREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 630 | if (class != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 631 | if (PyFunction_Check(v)) { |
| 632 | PyObject *w = PyMethod_New(v, (PyObject *)inst, |
Jeremy Hylton | 09ac89a | 2001-01-29 22:38:32 +0000 | [diff] [blame] | 633 | (PyObject *)class); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 634 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 635 | v = w; |
| 636 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 637 | else if (PyMethod_Check(v)) { |
| 638 | PyObject *im_class = PyMethod_Class(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 639 | /* Only if classes are compatible */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 640 | if (PyClass_IsSubclass((PyObject *)class, im_class)) { |
| 641 | PyObject *im_func = PyMethod_Function(v); |
| 642 | PyObject *w = PyMethod_New(im_func, |
| 643 | (PyObject *)inst, im_class); |
| 644 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 645 | v = w; |
| 646 | } |
| 647 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 648 | } |
| 649 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 650 | } |
| 651 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 652 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 653 | instance_getattr(register PyInstanceObject *inst, PyObject *name) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 654 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 655 | register PyObject *func, *res; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 656 | res = instance_getattr1(inst, name); |
| 657 | if (res == NULL && (func = inst->in_class->cl_getattr) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 658 | PyObject *args; |
| 659 | PyErr_Clear(); |
| 660 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 661 | if (args == NULL) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 662 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 663 | res = PyEval_CallObject(func, args); |
| 664 | Py_DECREF(args); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 665 | } |
| 666 | return res; |
| 667 | } |
| 668 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 669 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 670 | instance_setattr1(PyInstanceObject *inst, PyObject *name, PyObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 671 | { |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 672 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 673 | int rv = PyDict_DelItem(inst->in_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 674 | if (rv < 0) |
Fred Drake | 661ea26 | 2000-10-24 19:57:45 +0000 | [diff] [blame] | 675 | PyErr_Format(PyExc_AttributeError, |
| 676 | "%.50s instance has no attribute '%.400s'", |
| 677 | PyString_AS_STRING(inst->in_class->cl_name), |
| 678 | PyString_AS_STRING(name)); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 679 | return rv; |
| 680 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 681 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 682 | return PyDict_SetItem(inst->in_dict, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 683 | } |
| 684 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 685 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 686 | instance_setattr(PyInstanceObject *inst, PyObject *name, PyObject *v) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 687 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 688 | PyObject *func, *args, *res, *tmp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 689 | char *sname = PyString_AsString(name); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 690 | if (sname[0] == '_' && sname[1] == '_') { |
| 691 | int n = PyString_Size(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 692 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 693 | if (strcmp(sname, "__dict__") == 0) { |
| 694 | if (PyEval_GetRestricted()) { |
| 695 | PyErr_SetString(PyExc_RuntimeError, |
| 696 | "__dict__ not accessible in restricted mode"); |
| 697 | return -1; |
| 698 | } |
| 699 | if (v == NULL || !PyDict_Check(v)) { |
| 700 | PyErr_SetString(PyExc_TypeError, |
| 701 | "__dict__ must be set to a dictionary"); |
| 702 | return -1; |
| 703 | } |
| 704 | tmp = inst->in_dict; |
| 705 | Py_INCREF(v); |
| 706 | inst->in_dict = v; |
| 707 | Py_DECREF(tmp); |
| 708 | return 0; |
| 709 | } |
| 710 | if (strcmp(sname, "__class__") == 0) { |
| 711 | if (PyEval_GetRestricted()) { |
| 712 | PyErr_SetString(PyExc_RuntimeError, |
| 713 | "__class__ not accessible in restricted mode"); |
| 714 | return -1; |
| 715 | } |
| 716 | if (v == NULL || !PyClass_Check(v)) { |
| 717 | PyErr_SetString(PyExc_TypeError, |
| 718 | "__class__ must be set to a class"); |
| 719 | return -1; |
| 720 | } |
| 721 | tmp = (PyObject *)(inst->in_class); |
| 722 | Py_INCREF(v); |
| 723 | inst->in_class = (PyClassObject *)v; |
| 724 | Py_DECREF(tmp); |
| 725 | return 0; |
| 726 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 727 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 728 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 729 | if (v == NULL) |
| 730 | func = inst->in_class->cl_delattr; |
| 731 | else |
| 732 | func = inst->in_class->cl_setattr; |
| 733 | if (func == NULL) |
| 734 | return instance_setattr1(inst, name, v); |
| 735 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 736 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 737 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 738 | args = Py_BuildValue("(OOO)", inst, name, v); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 739 | if (args == NULL) |
| 740 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 741 | res = PyEval_CallObject(func, args); |
| 742 | Py_DECREF(args); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 743 | if (res == NULL) |
| 744 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 745 | Py_DECREF(res); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 746 | return 0; |
| 747 | } |
| 748 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 749 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 750 | instance_repr(PyInstanceObject *inst) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 751 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 752 | PyObject *func; |
| 753 | PyObject *res; |
| 754 | static PyObject *reprstr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 755 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 756 | if (reprstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 757 | reprstr = PyString_InternFromString("__repr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 758 | func = instance_getattr(inst, reprstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 759 | if (func == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 760 | char buf[140]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 761 | PyObject *classname = inst->in_class->cl_name; |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 762 | PyObject *mod = PyDict_GetItemString( |
| 763 | inst->in_class->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 764 | char *cname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 765 | if (classname != NULL && PyString_Check(classname)) |
| 766 | cname = PyString_AsString(classname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 767 | else |
| 768 | cname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 769 | PyErr_Clear(); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 770 | if (mod == NULL || !PyString_Check(mod)) |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 771 | sprintf(buf, "<?.%.100s instance at %p>", |
| 772 | cname, inst); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 773 | else |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 774 | sprintf(buf, "<%.50s.%.50s instance at %p>", |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 775 | PyString_AsString(mod), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 776 | cname, inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 777 | return PyString_FromString(buf); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 778 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 779 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 780 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 781 | return res; |
| 782 | } |
| 783 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 784 | static long |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 785 | instance_hash(PyInstanceObject *inst) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 786 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 787 | PyObject *func; |
| 788 | PyObject *res; |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 789 | long outcome; |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 790 | static PyObject *hashstr, *eqstr, *cmpstr; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 791 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 792 | if (hashstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 793 | hashstr = PyString_InternFromString("__hash__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 794 | func = instance_getattr(inst, hashstr); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 795 | if (func == NULL) { |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 796 | /* If there is no __eq__ and no __cmp__ method, we hash on the |
| 797 | address. If an __eq__ or __cmp__ method exists, there must |
| 798 | be a __hash__. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 799 | PyErr_Clear(); |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 800 | if (eqstr == NULL) |
| 801 | eqstr = PyString_InternFromString("__eq__"); |
| 802 | func = instance_getattr(inst, eqstr); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 803 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 804 | PyErr_Clear(); |
Guido van Rossum | 65e8bd7 | 2001-01-18 23:46:31 +0000 | [diff] [blame] | 805 | if (cmpstr == NULL) |
| 806 | cmpstr = PyString_InternFromString("__cmp__"); |
| 807 | func = instance_getattr(inst, cmpstr); |
| 808 | if (func == NULL) { |
| 809 | PyErr_Clear(); |
| 810 | return _Py_HashPointer(inst); |
| 811 | } |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 812 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 813 | PyErr_SetString(PyExc_TypeError, "unhashable instance"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 814 | return -1; |
| 815 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 816 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 817 | Py_DECREF(func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 818 | if (res == NULL) |
| 819 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 820 | if (PyInt_Check(res)) { |
| 821 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 822 | if (outcome == -1) |
| 823 | outcome = -2; |
| 824 | } |
| 825 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 826 | PyErr_SetString(PyExc_TypeError, |
| 827 | "__hash__() should return an int"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 828 | outcome = -1; |
| 829 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 830 | Py_DECREF(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 831 | return outcome; |
| 832 | } |
| 833 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 834 | static int |
| 835 | instance_traverse(PyInstanceObject *o, visitproc visit, void *arg) |
| 836 | { |
| 837 | int err; |
| 838 | if (o->in_class) { |
| 839 | err = visit((PyObject *)(o->in_class), arg); |
| 840 | if (err) |
| 841 | return err; |
| 842 | } |
| 843 | if (o->in_dict) { |
| 844 | err = visit(o->in_dict, arg); |
| 845 | if (err) |
| 846 | return err; |
| 847 | } |
Jeremy Hylton | d22162b | 2000-06-23 17:14:56 +0000 | [diff] [blame] | 848 | return 0; |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 849 | } |
| 850 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 851 | static PyObject *getitemstr, *setitemstr, *delitemstr, *lenstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 852 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 853 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 854 | instance_length(PyInstanceObject *inst) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 855 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 856 | PyObject *func; |
| 857 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 858 | int outcome; |
| 859 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 860 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 861 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 862 | func = instance_getattr(inst, lenstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 863 | if (func == NULL) |
| 864 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 865 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 866 | Py_DECREF(func); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 867 | if (res == NULL) |
| 868 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 869 | if (PyInt_Check(res)) { |
| 870 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 871 | if (outcome < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 872 | PyErr_SetString(PyExc_ValueError, |
| 873 | "__len__() should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 874 | } |
| 875 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 876 | PyErr_SetString(PyExc_TypeError, |
| 877 | "__len__() should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 878 | outcome = -1; |
| 879 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 880 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 881 | return outcome; |
| 882 | } |
| 883 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 884 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 885 | instance_subscript(PyInstanceObject *inst, PyObject *key) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 886 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 887 | PyObject *func; |
| 888 | PyObject *arg; |
| 889 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 890 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 891 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 892 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 893 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 894 | if (func == NULL) |
| 895 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 896 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 897 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 898 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 899 | return NULL; |
| 900 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 901 | res = PyEval_CallObject(func, arg); |
| 902 | Py_DECREF(func); |
| 903 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 904 | return res; |
| 905 | } |
| 906 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 907 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 908 | instance_ass_subscript(PyInstanceObject *inst, PyObject *key, PyObject *value) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 909 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 910 | PyObject *func; |
| 911 | PyObject *arg; |
| 912 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 913 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 914 | if (value == NULL) { |
| 915 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 916 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 917 | func = instance_getattr(inst, delitemstr); |
| 918 | } |
| 919 | else { |
| 920 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 921 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 922 | func = instance_getattr(inst, setitemstr); |
| 923 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 924 | if (func == NULL) |
| 925 | return -1; |
| 926 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 927 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 928 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 929 | arg = Py_BuildValue("(OO)", key, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 930 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 931 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 932 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 933 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 934 | res = PyEval_CallObject(func, arg); |
| 935 | Py_DECREF(func); |
| 936 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 937 | if (res == NULL) |
| 938 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 939 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 940 | return 0; |
| 941 | } |
| 942 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 943 | static PyMappingMethods instance_as_mapping = { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 944 | (inquiry)instance_length, /* mp_length */ |
| 945 | (binaryfunc)instance_subscript, /* mp_subscript */ |
| 946 | (objobjargproc)instance_ass_subscript, /* mp_ass_subscript */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 947 | }; |
| 948 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 949 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 950 | instance_item(PyInstanceObject *inst, int i) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 951 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 952 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 953 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 954 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 955 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 956 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 957 | if (func == NULL) |
| 958 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 959 | arg = Py_BuildValue("(i)", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 960 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 961 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 962 | return NULL; |
| 963 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 964 | res = PyEval_CallObject(func, arg); |
| 965 | Py_DECREF(func); |
| 966 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 967 | return res; |
| 968 | } |
| 969 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 970 | static PyObject * |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 971 | sliceobj_from_intint(int i, int j) |
| 972 | { |
| 973 | PyObject *start, *end, *res; |
| 974 | |
| 975 | start = PyInt_FromLong((long)i); |
| 976 | if (!start) |
| 977 | return NULL; |
| 978 | |
| 979 | end = PyInt_FromLong((long)j); |
| 980 | if (!end) { |
| 981 | Py_DECREF(start); |
| 982 | return NULL; |
| 983 | } |
| 984 | res = PySlice_New(start, end, NULL); |
| 985 | Py_DECREF(start); |
| 986 | Py_DECREF(end); |
| 987 | return res; |
| 988 | } |
| 989 | |
| 990 | |
| 991 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 992 | instance_slice(PyInstanceObject *inst, int i, int j) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 993 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 994 | PyObject *func, *arg, *res; |
| 995 | static PyObject *getslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 996 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 997 | if (getslicestr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 998 | getslicestr = PyString_InternFromString("__getslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 999 | func = instance_getattr(inst, getslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1000 | |
| 1001 | if (func == NULL) { |
| 1002 | PyErr_Clear(); |
| 1003 | |
| 1004 | if (getitemstr == NULL) |
| 1005 | getitemstr = PyString_InternFromString("__getitem__"); |
| 1006 | func = instance_getattr(inst, getitemstr); |
| 1007 | if (func == NULL) |
| 1008 | return NULL; |
| 1009 | arg = Py_BuildValue("(N)", sliceobj_from_intint(i, j)); |
| 1010 | } else |
| 1011 | arg = Py_BuildValue("(ii)", i, j); |
| 1012 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1013 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1014 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1015 | return NULL; |
| 1016 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1017 | res = PyEval_CallObject(func, arg); |
| 1018 | Py_DECREF(func); |
| 1019 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1020 | return res; |
| 1021 | } |
| 1022 | |
| 1023 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1024 | instance_ass_item(PyInstanceObject *inst, int i, PyObject *item) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1025 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1026 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1027 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1028 | if (item == NULL) { |
| 1029 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1030 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1031 | func = instance_getattr(inst, delitemstr); |
| 1032 | } |
| 1033 | else { |
| 1034 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1035 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1036 | func = instance_getattr(inst, setitemstr); |
| 1037 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1038 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1039 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1040 | if (item == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1041 | arg = Py_BuildValue("i", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1042 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1043 | arg = Py_BuildValue("(iO)", i, item); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1044 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1045 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1046 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1047 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1048 | res = PyEval_CallObject(func, arg); |
| 1049 | Py_DECREF(func); |
| 1050 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1051 | if (res == NULL) |
| 1052 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1053 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1058 | instance_ass_slice(PyInstanceObject *inst, int i, int j, PyObject *value) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1059 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1060 | PyObject *func, *arg, *res; |
| 1061 | static PyObject *setslicestr, *delslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1062 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1063 | if (value == NULL) { |
| 1064 | if (delslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1065 | delslicestr = |
| 1066 | PyString_InternFromString("__delslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1067 | func = instance_getattr(inst, delslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1068 | if (func == NULL) { |
| 1069 | PyErr_Clear(); |
| 1070 | if (delitemstr == NULL) |
| 1071 | delitemstr = |
| 1072 | PyString_InternFromString("__delitem__"); |
| 1073 | func = instance_getattr(inst, delitemstr); |
| 1074 | if (func == NULL) |
| 1075 | return -1; |
| 1076 | |
| 1077 | arg = Py_BuildValue("(N)", |
| 1078 | sliceobj_from_intint(i, j)); |
| 1079 | } else |
| 1080 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1081 | } |
| 1082 | else { |
| 1083 | if (setslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1084 | setslicestr = |
| 1085 | PyString_InternFromString("__setslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1086 | func = instance_getattr(inst, setslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1087 | if (func == NULL) { |
| 1088 | PyErr_Clear(); |
| 1089 | if (setitemstr == NULL) |
| 1090 | setitemstr = |
| 1091 | PyString_InternFromString("__setitem__"); |
| 1092 | func = instance_getattr(inst, setitemstr); |
| 1093 | if (func == NULL) |
| 1094 | return -1; |
| 1095 | |
| 1096 | arg = Py_BuildValue("(NO)", |
| 1097 | sliceobj_from_intint(i, j), value); |
| 1098 | } else |
| 1099 | arg = Py_BuildValue("(iiO)", i, j, value); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1100 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1101 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1102 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1103 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1104 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1105 | res = PyEval_CallObject(func, arg); |
| 1106 | Py_DECREF(func); |
| 1107 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1108 | if (res == NULL) |
| 1109 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1110 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1111 | return 0; |
| 1112 | } |
| 1113 | |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1114 | static int instance_contains(PyInstanceObject *inst, PyObject *member) |
| 1115 | { |
| 1116 | static PyObject *__contains__; |
| 1117 | PyObject *func, *arg, *res; |
| 1118 | int ret; |
| 1119 | |
| 1120 | if(__contains__ == NULL) { |
| 1121 | __contains__ = PyString_InternFromString("__contains__"); |
| 1122 | if(__contains__ == NULL) |
| 1123 | return -1; |
| 1124 | } |
| 1125 | func = instance_getattr(inst, __contains__); |
| 1126 | if(func == NULL) { |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 1127 | /* fall back to previous behavior */ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1128 | int i, cmp_res; |
| 1129 | |
| 1130 | if(!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1131 | return -1; |
| 1132 | PyErr_Clear(); |
| 1133 | for(i=0;;i++) { |
| 1134 | PyObject *obj = instance_item(inst, i); |
| 1135 | int ret = 0; |
| 1136 | |
| 1137 | if(obj == NULL) { |
| 1138 | if(!PyErr_ExceptionMatches(PyExc_IndexError)) |
| 1139 | return -1; |
| 1140 | PyErr_Clear(); |
| 1141 | return 0; |
| 1142 | } |
| 1143 | if(PyObject_Cmp(obj, member, &cmp_res) == -1) |
| 1144 | ret = -1; |
| 1145 | if(cmp_res == 0) |
| 1146 | ret = 1; |
| 1147 | Py_DECREF(obj); |
| 1148 | if(ret) |
| 1149 | return ret; |
| 1150 | } |
| 1151 | } |
| 1152 | arg = Py_BuildValue("(O)", member); |
| 1153 | if(arg == NULL) { |
| 1154 | Py_DECREF(func); |
| 1155 | return -1; |
| 1156 | } |
| 1157 | res = PyEval_CallObject(func, arg); |
| 1158 | Py_DECREF(func); |
| 1159 | Py_DECREF(arg); |
| 1160 | if(res == NULL) |
| 1161 | return -1; |
| 1162 | ret = PyObject_IsTrue(res); |
| 1163 | Py_DECREF(res); |
| 1164 | return ret; |
| 1165 | } |
| 1166 | |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1167 | static PySequenceMethods |
| 1168 | instance_as_sequence = { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1169 | (inquiry)instance_length, /* sq_length */ |
| 1170 | 0, /* sq_concat */ |
| 1171 | 0, /* sq_repeat */ |
| 1172 | (intargfunc)instance_item, /* sq_item */ |
| 1173 | (intintargfunc)instance_slice, /* sq_slice */ |
| 1174 | (intobjargproc)instance_ass_item, /* sq_ass_item */ |
| 1175 | (intintobjargproc)instance_ass_slice, /* sq_ass_slice */ |
| 1176 | (objobjproc)instance_contains, /* sq_contains */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1177 | }; |
| 1178 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1179 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1180 | generic_unary_op(PyInstanceObject *self, PyObject *methodname) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1181 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1182 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1183 | |
| 1184 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 1185 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1186 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1187 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1188 | return res; |
| 1189 | } |
| 1190 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1191 | static PyObject * |
| 1192 | generic_binary_op(PyObject *v, PyObject *w, char *opname) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1193 | { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1194 | PyObject *result; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1195 | PyObject *args; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1196 | PyObject *func = PyObject_GetAttrString(v, opname); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1197 | if (func == NULL) { |
Guido van Rossum | 617c1b0 | 1998-05-28 19:50:02 +0000 | [diff] [blame] | 1198 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1199 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1200 | PyErr_Clear(); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1201 | Py_INCREF(Py_NotImplemented); |
| 1202 | return Py_NotImplemented; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1203 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1204 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1205 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1206 | Py_DECREF(func); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1207 | return NULL; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1208 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1209 | result = PyEval_CallObject(func, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1210 | Py_DECREF(args); |
| 1211 | Py_DECREF(func); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1212 | return result; |
| 1213 | } |
| 1214 | |
| 1215 | |
| 1216 | static PyObject *coerce_obj; |
| 1217 | |
| 1218 | /* Try one half of a binary operator involving a class instance. */ |
| 1219 | static PyObject * |
| 1220 | half_binop(PyObject *v, PyObject *w, char *opname, binaryfunc thisfunc, |
| 1221 | int swapped) |
| 1222 | { |
| 1223 | PyObject *args; |
| 1224 | PyObject *coercefunc; |
| 1225 | PyObject *coerced = NULL; |
| 1226 | PyObject *v1; |
| 1227 | PyObject *result; |
| 1228 | |
| 1229 | if (!PyInstance_Check(v)) { |
| 1230 | Py_INCREF(Py_NotImplemented); |
| 1231 | return Py_NotImplemented; |
| 1232 | } |
| 1233 | |
| 1234 | if (coerce_obj == NULL) { |
| 1235 | coerce_obj = PyString_InternFromString("__coerce__"); |
| 1236 | if (coerce_obj == NULL) |
| 1237 | return NULL; |
| 1238 | } |
| 1239 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1240 | if (coercefunc == NULL) { |
| 1241 | PyErr_Clear(); |
| 1242 | return generic_binary_op(v, w, opname); |
| 1243 | } |
| 1244 | |
| 1245 | args = Py_BuildValue("(O)", w); |
| 1246 | if (args == NULL) { |
| 1247 | return NULL; |
| 1248 | } |
| 1249 | coerced = PyEval_CallObject(coercefunc, args); |
| 1250 | Py_DECREF(args); |
| 1251 | Py_DECREF(coercefunc); |
| 1252 | if (coerced == NULL) { |
| 1253 | return NULL; |
| 1254 | } |
| 1255 | if (coerced == Py_None || coerced == Py_NotImplemented) { |
| 1256 | Py_DECREF(coerced); |
| 1257 | return generic_binary_op(v, w, opname); |
| 1258 | } |
| 1259 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
| 1260 | Py_DECREF(coerced); |
| 1261 | PyErr_SetString(PyExc_TypeError, |
| 1262 | "coercion should return None or 2-tuple"); |
| 1263 | return NULL; |
| 1264 | } |
| 1265 | v1 = PyTuple_GetItem(coerced, 0); |
| 1266 | w = PyTuple_GetItem(coerced, 1); |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1267 | if (v1->ob_type == v->ob_type && PyInstance_Check(v)) { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1268 | /* prevent recursion if __coerce__ returns self as the first |
| 1269 | * argument */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1270 | result = generic_binary_op(v1, w, opname); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1271 | } else { |
| 1272 | if (swapped) |
| 1273 | result = (thisfunc)(w, v1); |
| 1274 | else |
| 1275 | result = (thisfunc)(v1, w); |
| 1276 | } |
| 1277 | Py_DECREF(coerced); |
| 1278 | return result; |
| 1279 | } |
| 1280 | |
| 1281 | /* Implement a binary operator involving at least one class instance. */ |
| 1282 | static PyObject * |
| 1283 | do_binop(PyObject *v, PyObject *w, char *opname, char *ropname, |
| 1284 | binaryfunc thisfunc) |
| 1285 | { |
| 1286 | PyObject *result = half_binop(v, w, opname, thisfunc, 0); |
| 1287 | if (result == Py_NotImplemented) { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1288 | Py_DECREF(result); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1289 | result = half_binop(w, v, ropname, thisfunc, 1); |
| 1290 | } |
| 1291 | return result; |
| 1292 | } |
| 1293 | |
| 1294 | static PyObject * |
| 1295 | do_binop_inplace(PyObject *v, PyObject *w, char *iopname, char *opname, |
| 1296 | char *ropname, binaryfunc thisfunc) |
| 1297 | { |
| 1298 | PyObject *result = half_binop(v, w, iopname, thisfunc, 0); |
| 1299 | if (result == Py_NotImplemented) { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1300 | Py_DECREF(result); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1301 | result = do_binop(v, w, opname, ropname, thisfunc); |
| 1302 | } |
| 1303 | return result; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1304 | } |
| 1305 | |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1306 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1307 | instance_coerce(PyObject **pv, PyObject **pw) |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1308 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1309 | PyObject *v = *pv; |
| 1310 | PyObject *w = *pw; |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1311 | PyObject *coercefunc; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1312 | PyObject *args; |
| 1313 | PyObject *coerced; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1314 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1315 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1316 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1317 | if (coerce_obj == NULL) |
| 1318 | return -1; |
| 1319 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1320 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1321 | if (coercefunc == NULL) { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1322 | /* No __coerce__ method */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1323 | PyErr_Clear(); |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1324 | return 1; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1325 | } |
| 1326 | /* Has __coerce__ method: call it */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1327 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1328 | if (args == NULL) { |
| 1329 | return -1; |
| 1330 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1331 | coerced = PyEval_CallObject(coercefunc, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1332 | Py_DECREF(args); |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1333 | Py_DECREF(coercefunc); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1334 | if (coerced == NULL) { |
| 1335 | /* __coerce__ call raised an exception */ |
| 1336 | return -1; |
| 1337 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1338 | if (coerced == Py_None || coerced == Py_NotImplemented) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1339 | /* __coerce__ says "I can't do it" */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1340 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1341 | return 1; |
| 1342 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1343 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1344 | /* __coerce__ return value is malformed */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1345 | Py_DECREF(coerced); |
| 1346 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1347 | "coercion should return None or 2-tuple"); |
| 1348 | return -1; |
| 1349 | } |
| 1350 | /* __coerce__ returned two new values */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1351 | *pv = PyTuple_GetItem(coerced, 0); |
| 1352 | *pw = PyTuple_GetItem(coerced, 1); |
| 1353 | Py_INCREF(*pv); |
| 1354 | Py_INCREF(*pw); |
| 1355 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1356 | return 0; |
| 1357 | } |
| 1358 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1359 | #define UNARY(funcname, methodname) \ |
Thomas Wouters | c307352 | 2000-07-23 22:09:59 +0000 | [diff] [blame] | 1360 | static PyObject *funcname(PyInstanceObject *self) { \ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1361 | static PyObject *o; \ |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1362 | if (o == NULL) o = PyString_InternFromString(methodname); \ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1363 | return generic_unary_op(self, o); \ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1364 | } |
| 1365 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1366 | #define BINARY(f, m, n) \ |
| 1367 | static PyObject *f(PyObject *v, PyObject *w) { \ |
| 1368 | return do_binop(v, w, "__" m "__", "__r" m "__", n); \ |
| 1369 | } |
| 1370 | |
| 1371 | #define BINARY_INPLACE(f, m, n) \ |
| 1372 | static PyObject *f(PyObject *v, PyObject *w) { \ |
| 1373 | return do_binop_inplace(v, w, "__i" m "__", "__" m "__", \ |
| 1374 | "__r" m "__", n); \ |
| 1375 | } |
| 1376 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1377 | UNARY(instance_neg, "__neg__") |
| 1378 | UNARY(instance_pos, "__pos__") |
| 1379 | UNARY(instance_abs, "__abs__") |
| 1380 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1381 | BINARY(instance_or, "or", PyNumber_Or) |
| 1382 | BINARY(instance_and, "and", PyNumber_And) |
| 1383 | BINARY(instance_xor, "xor", PyNumber_Xor) |
| 1384 | BINARY(instance_lshift, "lshift", PyNumber_Lshift) |
| 1385 | BINARY(instance_rshift, "rshift", PyNumber_Rshift) |
| 1386 | BINARY(instance_add, "add", PyNumber_Add) |
| 1387 | BINARY(instance_sub, "sub", PyNumber_Subtract) |
| 1388 | BINARY(instance_mul, "mul", PyNumber_Multiply) |
| 1389 | BINARY(instance_div, "div", PyNumber_Divide) |
| 1390 | BINARY(instance_mod, "mod", PyNumber_Remainder) |
| 1391 | BINARY(instance_divmod, "divmod", PyNumber_Divmod) |
| 1392 | |
| 1393 | BINARY_INPLACE(instance_ior, "or", PyNumber_InPlaceOr) |
| 1394 | BINARY_INPLACE(instance_ixor, "xor", PyNumber_InPlaceXor) |
| 1395 | BINARY_INPLACE(instance_iand, "and", PyNumber_InPlaceAnd) |
| 1396 | BINARY_INPLACE(instance_ilshift, "lshift", PyNumber_InPlaceLshift) |
| 1397 | BINARY_INPLACE(instance_irshift, "rshift", PyNumber_InPlaceRshift) |
| 1398 | BINARY_INPLACE(instance_iadd, "add", PyNumber_InPlaceAdd) |
| 1399 | BINARY_INPLACE(instance_isub, "sub", PyNumber_InPlaceSubtract) |
| 1400 | BINARY_INPLACE(instance_imul, "mul", PyNumber_InPlaceMultiply) |
| 1401 | BINARY_INPLACE(instance_idiv, "div", PyNumber_InPlaceDivide) |
| 1402 | BINARY_INPLACE(instance_imod, "mod", PyNumber_InPlaceRemainder) |
| 1403 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1404 | /* Try a 3-way comparison, returning an int; v is an instance. Return: |
| 1405 | -2 for an exception; |
| 1406 | -1 if v < w; |
| 1407 | 0 if v == w; |
| 1408 | 1 if v > w; |
| 1409 | 2 if this particular 3-way comparison is not implemented or undefined. |
| 1410 | */ |
| 1411 | static int |
| 1412 | half_cmp(PyObject *v, PyObject *w) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1413 | { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1414 | static PyObject *cmp_obj; |
| 1415 | PyObject *args; |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1416 | PyObject *cmp_func; |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1417 | PyObject *result; |
| 1418 | long l; |
| 1419 | |
| 1420 | assert(PyInstance_Check(v)); |
| 1421 | |
| 1422 | if (cmp_obj == NULL) { |
| 1423 | cmp_obj = PyString_InternFromString("__cmp__"); |
| 1424 | if (cmp_obj == NULL) |
| 1425 | return -2; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1426 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1427 | |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1428 | cmp_func = PyObject_GetAttr(v, cmp_obj); |
| 1429 | if (cmp_func == NULL) { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1430 | PyErr_Clear(); |
| 1431 | return 2; |
| 1432 | } |
| 1433 | |
| 1434 | args = Py_BuildValue("(O)", w); |
| 1435 | if (args == NULL) |
| 1436 | return -2; |
| 1437 | |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1438 | result = PyEval_CallObject(cmp_func, args); |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1439 | Py_DECREF(args); |
Guido van Rossum | 3202c6f | 2001-01-29 23:50:25 +0000 | [diff] [blame] | 1440 | Py_DECREF(cmp_func); |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1441 | |
| 1442 | if (result == NULL) |
| 1443 | return -2; |
| 1444 | |
| 1445 | if (result == Py_NotImplemented) { |
| 1446 | Py_DECREF(result); |
| 1447 | return 2; |
| 1448 | } |
| 1449 | |
| 1450 | l = PyInt_AsLong(result); |
| 1451 | Py_DECREF(result); |
| 1452 | if (l == -1 && PyErr_Occurred()) { |
| 1453 | PyErr_SetString(PyExc_TypeError, |
| 1454 | "comparison did not return an int"); |
| 1455 | return -2; |
| 1456 | } |
| 1457 | |
| 1458 | return l < 0 ? -1 : l > 0 ? 1 : 0; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1459 | } |
| 1460 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1461 | /* Try a 3-way comparison, returning an int; either v or w is an instance. |
| 1462 | We first try a coercion. Return: |
| 1463 | -2 for an exception; |
| 1464 | -1 if v < w; |
| 1465 | 0 if v == w; |
| 1466 | 1 if v > w; |
| 1467 | 2 if this particular 3-way comparison is not implemented or undefined. |
| 1468 | THIS IS ONLY CALLED FROM object.c! |
| 1469 | */ |
| 1470 | static int |
| 1471 | instance_compare(PyObject *v, PyObject *w) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1472 | { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1473 | int c; |
| 1474 | |
| 1475 | c = PyNumber_CoerceEx(&v, &w); |
| 1476 | if (c < 0) |
| 1477 | return -2; |
| 1478 | if (c == 0) { |
| 1479 | /* If neither is now an instance, use regular comparison */ |
| 1480 | if (!PyInstance_Check(v) && !PyInstance_Check(w)) { |
| 1481 | c = PyObject_Compare(v, w); |
| 1482 | Py_DECREF(v); |
| 1483 | Py_DECREF(w); |
| 1484 | if (PyErr_Occurred()) |
| 1485 | return -2; |
| 1486 | return c < 0 ? -1 : c > 0 ? 1 : 0; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1487 | } |
| 1488 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1489 | else { |
| 1490 | /* The coercion didn't do anything. |
| 1491 | Treat this the same as returning v and w unchanged. */ |
| 1492 | Py_INCREF(v); |
| 1493 | Py_INCREF(w); |
| 1494 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1495 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1496 | if (PyInstance_Check(v)) { |
| 1497 | c = half_cmp(v, w); |
| 1498 | if (c <= 1) { |
| 1499 | Py_DECREF(v); |
| 1500 | Py_DECREF(w); |
| 1501 | return c; |
| 1502 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1503 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1504 | if (PyInstance_Check(w)) { |
| 1505 | c = half_cmp(w, v); |
| 1506 | if (c <= 1) { |
| 1507 | Py_DECREF(v); |
| 1508 | Py_DECREF(w); |
| 1509 | if (c >= -1) |
| 1510 | c = -c; |
| 1511 | return c; |
| 1512 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1513 | } |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1514 | Py_DECREF(v); |
| 1515 | Py_DECREF(w); |
| 1516 | return 2; |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1517 | } |
| 1518 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1519 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1520 | instance_nonzero(PyInstanceObject *self) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1521 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1522 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1523 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1524 | static PyObject *nonzerostr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1525 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1526 | if (nonzerostr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1527 | nonzerostr = PyString_InternFromString("__nonzero__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1528 | if ((func = instance_getattr(self, nonzerostr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1529 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1530 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1531 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1532 | if ((func = instance_getattr(self, lenstr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1533 | PyErr_Clear(); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1534 | /* Fall back to the default behavior: |
| 1535 | all instances are nonzero */ |
| 1536 | return 1; |
| 1537 | } |
| 1538 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1539 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1540 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1541 | if (res == NULL) |
| 1542 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1543 | if (!PyInt_Check(res)) { |
| 1544 | Py_DECREF(res); |
| 1545 | PyErr_SetString(PyExc_TypeError, |
| 1546 | "__nonzero__ should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1547 | return -1; |
| 1548 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1549 | outcome = PyInt_AsLong(res); |
| 1550 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1551 | if (outcome < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1552 | PyErr_SetString(PyExc_ValueError, |
| 1553 | "__nonzero__ should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1554 | return -1; |
| 1555 | } |
| 1556 | return outcome > 0; |
| 1557 | } |
| 1558 | |
| 1559 | UNARY(instance_invert, "__invert__") |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 1560 | UNARY(instance_int, "__int__") |
| 1561 | UNARY(instance_long, "__long__") |
| 1562 | UNARY(instance_float, "__float__") |
| 1563 | UNARY(instance_oct, "__oct__") |
| 1564 | UNARY(instance_hex, "__hex__") |
| 1565 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1566 | static PyObject * |
| 1567 | bin_power(PyObject *v, PyObject *w) |
| 1568 | { |
| 1569 | return PyNumber_Power(v, w, Py_None); |
| 1570 | } |
| 1571 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1572 | /* This version is for ternary calls only (z != None) */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1573 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1574 | instance_pow(PyObject *v, PyObject *w, PyObject *z) |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1575 | { |
| 1576 | if (z == Py_None) { |
| 1577 | return do_binop(v, w, "__pow__", "__rpow__", bin_power); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1578 | } |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1579 | else { |
| 1580 | PyObject *func; |
| 1581 | PyObject *args; |
| 1582 | PyObject *result; |
| 1583 | |
| 1584 | /* XXX Doesn't do coercions... */ |
| 1585 | func = PyObject_GetAttrString(v, "__pow__"); |
| 1586 | if (func == NULL) |
| 1587 | return NULL; |
| 1588 | args = Py_BuildValue("(OO)", w, z); |
| 1589 | if (args == NULL) { |
| 1590 | Py_DECREF(func); |
| 1591 | return NULL; |
| 1592 | } |
| 1593 | result = PyEval_CallObject(func, args); |
| 1594 | Py_DECREF(func); |
| 1595 | Py_DECREF(args); |
| 1596 | return result; |
| 1597 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1598 | } |
| 1599 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1600 | static PyObject * |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1601 | bin_inplace_power(PyObject *v, PyObject *w) |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1602 | { |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1603 | return PyNumber_InPlacePower(v, w, Py_None); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1604 | } |
| 1605 | |
| 1606 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1607 | static PyObject * |
| 1608 | instance_ipow(PyObject *v, PyObject *w, PyObject *z) |
| 1609 | { |
| 1610 | if (z == Py_None) { |
| 1611 | return do_binop_inplace(v, w, "__ipow__", "__pow__", |
| 1612 | "__rpow__", bin_inplace_power); |
| 1613 | } |
| 1614 | else { |
| 1615 | /* XXX Doesn't do coercions... */ |
| 1616 | PyObject *func; |
| 1617 | PyObject *args; |
| 1618 | PyObject *result; |
| 1619 | |
| 1620 | func = PyObject_GetAttrString(v, "__ipow__"); |
| 1621 | if (func == NULL) { |
| 1622 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1623 | return NULL; |
| 1624 | PyErr_Clear(); |
| 1625 | return instance_pow(v, w, z); |
| 1626 | } |
| 1627 | args = Py_BuildValue("(OO)", w, z); |
| 1628 | if (args == NULL) { |
| 1629 | Py_DECREF(func); |
| 1630 | return NULL; |
| 1631 | } |
| 1632 | result = PyEval_CallObject(func, args); |
| 1633 | Py_DECREF(func); |
| 1634 | Py_DECREF(args); |
| 1635 | return result; |
| 1636 | } |
| 1637 | } |
| 1638 | |
| 1639 | |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1640 | /* Map rich comparison operators to their __xx__ namesakes */ |
| 1641 | static char *name_op[] = { |
| 1642 | "__lt__", |
| 1643 | "__le__", |
| 1644 | "__eq__", |
| 1645 | "__ne__", |
| 1646 | "__gt__", |
| 1647 | "__ge__", |
| 1648 | }; |
| 1649 | |
| 1650 | static PyObject * |
| 1651 | half_richcompare(PyObject *v, PyObject *w, int op) |
| 1652 | { |
| 1653 | PyObject *name; |
| 1654 | PyObject *method; |
| 1655 | PyObject *args; |
| 1656 | PyObject *res; |
| 1657 | |
| 1658 | assert(PyInstance_Check(v)); |
| 1659 | |
| 1660 | name = PyString_InternFromString(name_op[op]); |
| 1661 | if (name == NULL) |
| 1662 | return NULL; |
| 1663 | |
| 1664 | method = PyObject_GetAttr(v, name); |
| 1665 | Py_DECREF(name); |
| 1666 | if (method == NULL) { |
| 1667 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1668 | return NULL; |
| 1669 | PyErr_Clear(); |
| 1670 | res = Py_NotImplemented; |
| 1671 | Py_INCREF(res); |
| 1672 | return res; |
| 1673 | } |
| 1674 | |
| 1675 | args = Py_BuildValue("(O)", w); |
| 1676 | if (args == NULL) { |
| 1677 | Py_DECREF(method); |
| 1678 | return NULL; |
| 1679 | } |
| 1680 | |
| 1681 | res = PyEval_CallObject(method, args); |
| 1682 | Py_DECREF(args); |
| 1683 | Py_DECREF(method); |
| 1684 | |
| 1685 | return res; |
| 1686 | } |
| 1687 | |
| 1688 | /* Map rich comparison operators to their swapped version, e.g. LT --> GT */ |
| 1689 | static int swapped_op[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE}; |
| 1690 | |
| 1691 | static PyObject * |
| 1692 | instance_richcompare(PyObject *v, PyObject *w, int op) |
| 1693 | { |
| 1694 | PyObject *res; |
| 1695 | |
| 1696 | if (PyInstance_Check(v)) { |
| 1697 | res = half_richcompare(v, w, op); |
| 1698 | if (res != Py_NotImplemented) |
| 1699 | return res; |
| 1700 | Py_DECREF(res); |
| 1701 | } |
| 1702 | |
| 1703 | if (PyInstance_Check(w)) { |
| 1704 | res = half_richcompare(w, v, swapped_op[op]); |
| 1705 | if (res != Py_NotImplemented) |
| 1706 | return res; |
| 1707 | Py_DECREF(res); |
| 1708 | } |
| 1709 | |
| 1710 | Py_INCREF(Py_NotImplemented); |
| 1711 | return Py_NotImplemented; |
| 1712 | } |
| 1713 | |
Neil Schemenauer | 29bfc07 | 2001-01-04 01:43:46 +0000 | [diff] [blame] | 1714 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1715 | static PyNumberMethods instance_as_number = { |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1716 | (binaryfunc)instance_add, /* nb_add */ |
| 1717 | (binaryfunc)instance_sub, /* nb_subtract */ |
| 1718 | (binaryfunc)instance_mul, /* nb_multiply */ |
| 1719 | (binaryfunc)instance_div, /* nb_divide */ |
| 1720 | (binaryfunc)instance_mod, /* nb_remainder */ |
| 1721 | (binaryfunc)instance_divmod, /* nb_divmod */ |
| 1722 | (ternaryfunc)instance_pow, /* nb_power */ |
| 1723 | (unaryfunc)instance_neg, /* nb_negative */ |
| 1724 | (unaryfunc)instance_pos, /* nb_positive */ |
| 1725 | (unaryfunc)instance_abs, /* nb_absolute */ |
| 1726 | (inquiry)instance_nonzero, /* nb_nonzero */ |
| 1727 | (unaryfunc)instance_invert, /* nb_invert */ |
| 1728 | (binaryfunc)instance_lshift, /* nb_lshift */ |
| 1729 | (binaryfunc)instance_rshift, /* nb_rshift */ |
| 1730 | (binaryfunc)instance_and, /* nb_and */ |
| 1731 | (binaryfunc)instance_xor, /* nb_xor */ |
| 1732 | (binaryfunc)instance_or, /* nb_or */ |
| 1733 | (coercion)instance_coerce, /* nb_coerce */ |
| 1734 | (unaryfunc)instance_int, /* nb_int */ |
| 1735 | (unaryfunc)instance_long, /* nb_long */ |
| 1736 | (unaryfunc)instance_float, /* nb_float */ |
| 1737 | (unaryfunc)instance_oct, /* nb_oct */ |
| 1738 | (unaryfunc)instance_hex, /* nb_hex */ |
| 1739 | (binaryfunc)instance_iadd, /* nb_inplace_add */ |
| 1740 | (binaryfunc)instance_isub, /* nb_inplace_subtract */ |
| 1741 | (binaryfunc)instance_imul, /* nb_inplace_multiply */ |
| 1742 | (binaryfunc)instance_idiv, /* nb_inplace_divide */ |
| 1743 | (binaryfunc)instance_imod, /* nb_inplace_remainder */ |
| 1744 | (ternaryfunc)instance_ipow, /* nb_inplace_power */ |
| 1745 | (binaryfunc)instance_ilshift, /* nb_inplace_lshift */ |
| 1746 | (binaryfunc)instance_irshift, /* nb_inplace_rshift */ |
| 1747 | (binaryfunc)instance_iand, /* nb_inplace_and */ |
| 1748 | (binaryfunc)instance_ixor, /* nb_inplace_xor */ |
| 1749 | (binaryfunc)instance_ior, /* nb_inplace_or */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1750 | }; |
| 1751 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1752 | PyTypeObject PyInstance_Type = { |
| 1753 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1754 | 0, |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1755 | "instance", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1756 | sizeof(PyInstanceObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1757 | 0, |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1758 | (destructor)instance_dealloc, /* tp_dealloc */ |
| 1759 | 0, /* tp_print */ |
| 1760 | 0, /* tp_getattr */ |
| 1761 | 0, /* tp_setattr */ |
| 1762 | instance_compare, /* tp_compare */ |
| 1763 | (reprfunc)instance_repr, /* tp_repr */ |
| 1764 | &instance_as_number, /* tp_as_number */ |
| 1765 | &instance_as_sequence, /* tp_as_sequence */ |
| 1766 | &instance_as_mapping, /* tp_as_mapping */ |
| 1767 | (hashfunc)instance_hash, /* tp_hash */ |
| 1768 | 0, /* tp_call */ |
| 1769 | 0, /* tp_str */ |
| 1770 | (getattrofunc)instance_getattr, /* tp_getattro */ |
| 1771 | (setattrofunc)instance_setattr, /* tp_setattro */ |
| 1772 | 0, /* tp_as_buffer */ |
| 1773 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC | Py_TPFLAGS_CHECKTYPES,/*tp_flags*/ |
| 1774 | 0, /* tp_doc */ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1775 | (traverseproc)instance_traverse, /* tp_traverse */ |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 1776 | 0, /* tp_clear */ |
| 1777 | instance_richcompare, /* tp_richcompare */ |
Fred Drake | 41deb1e | 2001-02-01 05:27:45 +0000 | [diff] [blame] | 1778 | offsetof(PyInstanceObject, in_weakreflist) /* tp_weaklistoffset */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1779 | }; |
| 1780 | |
| 1781 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1782 | /* Instance method objects are used for two purposes: |
| 1783 | (a) as bound instance methods (returned by instancename.methodname) |
| 1784 | (b) as unbound methods (returned by ClassName.methodname) |
| 1785 | In case (b), im_self is NULL |
| 1786 | */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1787 | |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1788 | static PyMethodObject *free_list; |
| 1789 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1790 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1791 | PyMethod_New(PyObject *func, PyObject *self, PyObject *class) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1792 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1793 | register PyMethodObject *im; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1794 | if (!PyCallable_Check(func)) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1795 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1796 | return NULL; |
| 1797 | } |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1798 | im = free_list; |
| 1799 | if (im != NULL) { |
| 1800 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1801 | PyObject_INIT(im, &PyMethod_Type); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1802 | } |
| 1803 | else { |
| 1804 | im = PyObject_NEW(PyMethodObject, &PyMethod_Type); |
| 1805 | if (im == NULL) |
| 1806 | return NULL; |
| 1807 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1808 | Py_INCREF(func); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1809 | im->im_func = func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1810 | Py_XINCREF(self); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1811 | im->im_self = self; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1812 | Py_INCREF(class); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1813 | im->im_class = class; |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1814 | PyObject_GC_Init(im); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1815 | return (PyObject *)im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1816 | } |
| 1817 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1818 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1819 | PyMethod_Function(register PyObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1820 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1821 | if (!PyMethod_Check(im)) { |
| 1822 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1823 | return NULL; |
| 1824 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1825 | return ((PyMethodObject *)im)->im_func; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1826 | } |
| 1827 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1828 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1829 | PyMethod_Self(register PyObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1830 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1831 | if (!PyMethod_Check(im)) { |
| 1832 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1833 | return NULL; |
| 1834 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1835 | return ((PyMethodObject *)im)->im_self; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1836 | } |
| 1837 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1838 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1839 | PyMethod_Class(register PyObject *im) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1840 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1841 | if (!PyMethod_Check(im)) { |
| 1842 | PyErr_BadInternalCall(); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1843 | return NULL; |
| 1844 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1845 | return ((PyMethodObject *)im)->im_class; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1846 | } |
| 1847 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1848 | /* Class method methods */ |
| 1849 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1850 | #define OFF(x) offsetof(PyMethodObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1851 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1852 | static struct memberlist instancemethod_memberlist[] = { |
| 1853 | {"im_func", T_OBJECT, OFF(im_func)}, |
| 1854 | {"im_self", T_OBJECT, OFF(im_self)}, |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1855 | {"im_class", T_OBJECT, OFF(im_class)}, |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1856 | /* Dummies that are not handled by getattr() except for __members__ */ |
| 1857 | {"__doc__", T_INT, 0}, |
| 1858 | {"__name__", T_INT, 0}, |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 1859 | {"__dict__", T_OBJECT, 0}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1860 | {NULL} /* Sentinel */ |
| 1861 | }; |
| 1862 | |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 1863 | static int |
| 1864 | instancemethod_setattro(register PyMethodObject *im, PyObject *name, |
| 1865 | PyObject *v) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1866 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1867 | char *sname = PyString_AsString(name); |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 1868 | |
| 1869 | if (PyEval_GetRestricted() || |
| 1870 | strcmp(sname, "im_func") == 0 || |
| 1871 | strcmp(sname, "im_self") == 0 || |
| 1872 | strcmp(sname, "im_class") == 0) |
| 1873 | { |
| 1874 | PyErr_Format(PyExc_TypeError, "read-only attribute: %s", |
| 1875 | sname); |
| 1876 | return -1; |
| 1877 | } |
| 1878 | if (im->im_self != NULL) { |
| 1879 | PyErr_Format(PyExc_TypeError, |
| 1880 | "cannot set attributes through bound methods"); |
| 1881 | return -1; |
| 1882 | } |
| 1883 | return PyObject_SetAttr(im->im_func, name, v); |
| 1884 | } |
| 1885 | |
| 1886 | |
| 1887 | static PyObject * |
| 1888 | instancemethod_getattro(register PyMethodObject *im, PyObject *name) |
| 1889 | { |
| 1890 | PyObject *rtn; |
| 1891 | char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1892 | if (sname[0] == '_') { |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1893 | /* Inherit __name__ and __doc__ from the callable object |
| 1894 | implementing the method */ |
| 1895 | if (strcmp(sname, "__name__") == 0 || |
| 1896 | strcmp(sname, "__doc__") == 0) |
| 1897 | return PyObject_GetAttr(im->im_func, name); |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1898 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1899 | if (PyEval_GetRestricted()) { |
| 1900 | PyErr_SetString(PyExc_RuntimeError, |
| 1901 | "instance-method attributes not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 1902 | return NULL; |
| 1903 | } |
Barry Warsaw | d6a9e84 | 2001-01-15 20:40:19 +0000 | [diff] [blame] | 1904 | if (sname[0] == '_' && strcmp(sname, "__dict__") == 0) |
| 1905 | return PyObject_GetAttr(im->im_func, name); |
| 1906 | |
| 1907 | rtn = PyMember_Get((char *)im, instancemethod_memberlist, sname); |
| 1908 | if (rtn == NULL && PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| 1909 | PyErr_Clear(); |
| 1910 | rtn = PyObject_GetAttr(im->im_func, name); |
| 1911 | } |
| 1912 | return rtn; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1913 | } |
| 1914 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1915 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1916 | instancemethod_dealloc(register PyMethodObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1917 | { |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1918 | PyObject_GC_Fini(im); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1919 | Py_DECREF(im->im_func); |
| 1920 | Py_XDECREF(im->im_self); |
| 1921 | Py_DECREF(im->im_class); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1922 | im->im_self = (PyObject *)free_list; |
| 1923 | free_list = im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1924 | } |
| 1925 | |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1926 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1927 | instancemethod_compare(PyMethodObject *a, PyMethodObject *b) |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1928 | { |
Guido van Rossum | e9df727 | 1995-04-06 14:46:51 +0000 | [diff] [blame] | 1929 | if (a->im_self != b->im_self) |
| 1930 | return (a->im_self < b->im_self) ? -1 : 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1931 | return PyObject_Compare(a->im_func, b->im_func); |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1932 | } |
| 1933 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1934 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1935 | instancemethod_repr(PyMethodObject *a) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1936 | { |
| 1937 | char buf[240]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1938 | PyInstanceObject *self = (PyInstanceObject *)(a->im_self); |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1939 | PyObject *func = a->im_func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1940 | PyClassObject *class = (PyClassObject *)(a->im_class); |
| 1941 | PyObject *fclassname, *iclassname, *funcname; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1942 | char *fcname, *icname, *fname; |
| 1943 | fclassname = class->cl_name; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1944 | if (PyFunction_Check(func)) { |
| 1945 | funcname = ((PyFunctionObject *)func)->func_name; |
| 1946 | Py_INCREF(funcname); |
| 1947 | } |
| 1948 | else { |
| 1949 | funcname = PyObject_GetAttrString(func,"__name__"); |
| 1950 | if (funcname == NULL) |
| 1951 | PyErr_Clear(); |
| 1952 | } |
| 1953 | if (funcname != NULL && PyString_Check(funcname)) |
| 1954 | fname = PyString_AS_STRING(funcname); |
| 1955 | else |
| 1956 | fname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1957 | if (fclassname != NULL && PyString_Check(fclassname)) |
| 1958 | fcname = PyString_AsString(fclassname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1959 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1960 | fcname = "?"; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1961 | if (self == NULL) |
| 1962 | sprintf(buf, "<unbound method %.100s.%.100s>", fcname, fname); |
| 1963 | else { |
| 1964 | iclassname = self->in_class->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1965 | if (iclassname != NULL && PyString_Check(iclassname)) |
| 1966 | icname = PyString_AsString(iclassname); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1967 | else |
| 1968 | icname = "?"; |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 1969 | sprintf(buf, "<method %.60s.%.60s of %.60s instance at %p>", |
| 1970 | fcname, fname, icname, self); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1971 | } |
Guido van Rossum | 42636dc | 1999-10-11 14:03:12 +0000 | [diff] [blame] | 1972 | Py_XDECREF(funcname); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1973 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1974 | } |
| 1975 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1976 | static long |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1977 | instancemethod_hash(PyMethodObject *a) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1978 | { |
| 1979 | long x, y; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1980 | if (a->im_self == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1981 | x = PyObject_Hash(Py_None); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1982 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1983 | x = PyObject_Hash(a->im_self); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1984 | if (x == -1) |
| 1985 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1986 | y = PyObject_Hash(a->im_func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1987 | if (y == -1) |
| 1988 | return -1; |
| 1989 | return x ^ y; |
| 1990 | } |
| 1991 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1992 | static int |
| 1993 | instancemethod_traverse(PyMethodObject *im, visitproc visit, void *arg) |
| 1994 | { |
| 1995 | int err; |
| 1996 | if (im->im_func) { |
| 1997 | err = visit(im->im_func, arg); |
| 1998 | if (err) |
| 1999 | return err; |
| 2000 | } |
| 2001 | if (im->im_self) { |
| 2002 | err = visit(im->im_self, arg); |
| 2003 | if (err) |
| 2004 | return err; |
| 2005 | } |
| 2006 | if (im->im_class) { |
| 2007 | err = visit(im->im_class, arg); |
| 2008 | if (err) |
| 2009 | return err; |
| 2010 | } |
Jeremy Hylton | d22162b | 2000-06-23 17:14:56 +0000 | [diff] [blame] | 2011 | return 0; |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 2012 | } |
| 2013 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 2014 | PyTypeObject PyMethod_Type = { |
| 2015 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2016 | 0, |
Guido van Rossum | 569fce7 | 1991-04-16 08:38:43 +0000 | [diff] [blame] | 2017 | "instance method", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 2018 | sizeof(PyMethodObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2019 | 0, |
Guido van Rossum | 8998b4f | 2001-01-17 15:28:20 +0000 | [diff] [blame] | 2020 | (destructor)instancemethod_dealloc, /* tp_dealloc */ |
| 2021 | 0, /* tp_print */ |
| 2022 | 0, /* tp_getattr */ |
| 2023 | 0, /* tp_setattr */ |
| 2024 | (cmpfunc)instancemethod_compare, /* tp_compare */ |
| 2025 | (reprfunc)instancemethod_repr, /* tp_repr */ |
| 2026 | 0, /* tp_as_number */ |
| 2027 | 0, /* tp_as_sequence */ |
| 2028 | 0, /* tp_as_mapping */ |
| 2029 | (hashfunc)instancemethod_hash, /* tp_hash */ |
| 2030 | 0, /* tp_call */ |
| 2031 | 0, /* tp_str */ |
| 2032 | (getattrofunc)instancemethod_getattro, /* tp_getattro */ |
| 2033 | (setattrofunc)instancemethod_setattro, /* tp_setattro */ |
| 2034 | 0, /* tp_as_buffer */ |
| 2035 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /* tp_flags */ |
| 2036 | 0, /* tp_doc */ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 2037 | (traverseproc)instancemethod_traverse, /* tp_traverse */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2038 | }; |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2039 | |
| 2040 | /* Clear out the free list */ |
| 2041 | |
| 2042 | void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 2043 | PyMethod_Fini(void) |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2044 | { |
| 2045 | while (free_list) { |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 2046 | PyMethodObject *im = free_list; |
| 2047 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 2048 | im = (PyMethodObject *) PyObject_AS_GC(im); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 2049 | PyObject_DEL(im); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 2050 | } |
| 2051 | } |