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 | |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 7 | /* Forward */ |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 8 | static PyObject *class_lookup(PyClassObject *, PyObject *, |
| 9 | PyClassObject **); |
| 10 | static PyObject *instance_getattr1(PyInstanceObject *, PyObject *); |
| 11 | static PyObject *instance_getattr2(PyInstanceObject *, PyObject *); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 12 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 13 | static PyObject *getattrstr, *setattrstr, *delattrstr; |
| 14 | |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 15 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 16 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 17 | PyClass_New(PyObject *bases, PyObject *dict, PyObject *name) |
| 18 | /* bases is NULL or tuple of classobjects! */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 19 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 20 | PyClassObject *op, *dummy; |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 21 | static PyObject *docstr, *modstr, *namestr; |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 22 | if (docstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 23 | docstr= PyString_InternFromString("__doc__"); |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 24 | if (docstr == NULL) |
| 25 | return NULL; |
| 26 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 27 | if (modstr == NULL) { |
| 28 | modstr= PyString_InternFromString("__module__"); |
| 29 | if (modstr == NULL) |
| 30 | return NULL; |
| 31 | } |
| 32 | if (namestr == NULL) { |
| 33 | namestr= PyString_InternFromString("__name__"); |
| 34 | if (namestr == NULL) |
| 35 | return NULL; |
| 36 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 37 | if (name == NULL || !PyString_Check(name)) { |
| 38 | PyErr_SetString(PyExc_SystemError, |
| 39 | "PyClass_New: name must be a string"); |
| 40 | return NULL; |
| 41 | } |
| 42 | if (dict == NULL || !PyDict_Check(dict)) { |
| 43 | PyErr_SetString(PyExc_SystemError, |
| 44 | "PyClass_New: dict must be a dictionary"); |
| 45 | return NULL; |
| 46 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 47 | if (PyDict_GetItem(dict, docstr) == NULL) { |
| 48 | if (PyDict_SetItem(dict, docstr, Py_None) < 0) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 49 | return NULL; |
| 50 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 51 | if (PyDict_GetItem(dict, modstr) == NULL) { |
| 52 | PyObject *globals = PyEval_GetGlobals(); |
| 53 | if (globals != NULL) { |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 54 | PyObject *modname = PyDict_GetItem(globals, namestr); |
| 55 | if (modname != NULL) { |
| 56 | if (PyDict_SetItem(dict, modstr, modname) < 0) |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 57 | return NULL; |
| 58 | } |
| 59 | } |
| 60 | } |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 61 | if (bases == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 62 | bases = PyTuple_New(0); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 63 | if (bases == NULL) |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 64 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 65 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 66 | else { |
| 67 | int i; |
| 68 | if (!PyTuple_Check(bases)) { |
| 69 | PyErr_SetString(PyExc_SystemError, |
| 70 | "PyClass_New: bases must be a tuple"); |
| 71 | return NULL; |
| 72 | } |
| 73 | i = PyTuple_Size(bases); |
| 74 | while (--i >= 0) { |
| 75 | if (!PyClass_Check(PyTuple_GetItem(bases, i))) { |
| 76 | PyErr_SetString(PyExc_SystemError, |
| 77 | "PyClass_New: base must be a class"); |
| 78 | return NULL; |
| 79 | } |
| 80 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 81 | Py_INCREF(bases); |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 82 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 83 | op = PyObject_NEW(PyClassObject, &PyClass_Type); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 84 | if (op == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 85 | Py_DECREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 86 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 87 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 88 | op->cl_bases = bases; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 89 | Py_INCREF(dict); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 90 | op->cl_dict = dict; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 91 | Py_XINCREF(name); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 92 | op->cl_name = name; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 93 | if (getattrstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 94 | getattrstr = PyString_InternFromString("__getattr__"); |
| 95 | setattrstr = PyString_InternFromString("__setattr__"); |
| 96 | delattrstr = PyString_InternFromString("__delattr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 97 | } |
| 98 | op->cl_getattr = class_lookup(op, getattrstr, &dummy); |
| 99 | op->cl_setattr = class_lookup(op, setattrstr, &dummy); |
| 100 | op->cl_delattr = class_lookup(op, delattrstr, &dummy); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 101 | Py_XINCREF(op->cl_getattr); |
| 102 | Py_XINCREF(op->cl_setattr); |
| 103 | Py_XINCREF(op->cl_delattr); |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 104 | PyObject_GC_Init(op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 105 | return (PyObject *) op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | /* Class methods */ |
| 109 | |
| 110 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 111 | class_dealloc(PyClassObject *op) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 112 | { |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 113 | PyObject_GC_Fini(op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 114 | Py_DECREF(op->cl_bases); |
| 115 | Py_DECREF(op->cl_dict); |
| 116 | Py_XDECREF(op->cl_name); |
Guido van Rossum | 152d817 | 1998-08-04 14:59:16 +0000 | [diff] [blame] | 117 | Py_XDECREF(op->cl_getattr); |
| 118 | Py_XDECREF(op->cl_setattr); |
| 119 | Py_XDECREF(op->cl_delattr); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 120 | op = (PyClassObject *) PyObject_AS_GC(op); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 121 | PyObject_DEL(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 122 | } |
| 123 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 124 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 125 | class_lookup(PyClassObject *cp, PyObject *name, PyClassObject **pclass) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 126 | { |
| 127 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 128 | PyObject *value = PyDict_GetItem(cp->cl_dict, name); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 129 | if (value != NULL) { |
| 130 | *pclass = cp; |
| 131 | return value; |
| 132 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 133 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 134 | for (i = 0; i < n; i++) { |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 135 | /* XXX What if one of the bases is not a class? */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 136 | PyObject *v = class_lookup( |
| 137 | (PyClassObject *) |
| 138 | PyTuple_GetItem(cp->cl_bases, i), name, pclass); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 139 | if (v != NULL) |
| 140 | return v; |
| 141 | } |
| 142 | return NULL; |
| 143 | } |
| 144 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 145 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 146 | class_getattr(register PyClassObject *op, PyObject *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 147 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 148 | register PyObject *v; |
| 149 | register char *sname = PyString_AsString(name); |
| 150 | PyClassObject *class; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 151 | if (sname[0] == '_' && sname[1] == '_') { |
| 152 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 153 | if (PyEval_GetRestricted()) { |
| 154 | PyErr_SetString(PyExc_RuntimeError, |
| 155 | "class.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 156 | return NULL; |
| 157 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 158 | Py_INCREF(op->cl_dict); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 159 | return op->cl_dict; |
| 160 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 161 | if (strcmp(sname, "__bases__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 162 | Py_INCREF(op->cl_bases); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 163 | return op->cl_bases; |
| 164 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 165 | if (strcmp(sname, "__name__") == 0) { |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 166 | if (op->cl_name == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 167 | v = Py_None; |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 168 | else |
| 169 | v = op->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 170 | Py_INCREF(v); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 171 | return v; |
| 172 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 173 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 174 | v = class_lookup(op, name, &class); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 175 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 176 | PyErr_SetObject(PyExc_AttributeError, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 177 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 178 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 179 | Py_INCREF(v); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 180 | if (PyFunction_Check(v)) { |
| 181 | PyObject *w = PyMethod_New(v, (PyObject *)NULL, |
| 182 | (PyObject *)class); |
| 183 | Py_DECREF(v); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 184 | v = w; |
| 185 | } |
| 186 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 187 | } |
| 188 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 189 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 190 | set_slot(PyObject **slot, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 191 | { |
| 192 | PyObject *temp = *slot; |
| 193 | Py_XINCREF(v); |
| 194 | *slot = v; |
| 195 | Py_XDECREF(temp); |
| 196 | } |
| 197 | |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 198 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 199 | set_attr_slots(PyClassObject *c) |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 200 | { |
| 201 | PyClassObject *dummy; |
| 202 | |
| 203 | set_slot(&c->cl_getattr, class_lookup(c, getattrstr, &dummy)); |
| 204 | set_slot(&c->cl_setattr, class_lookup(c, setattrstr, &dummy)); |
| 205 | set_slot(&c->cl_delattr, class_lookup(c, delattrstr, &dummy)); |
| 206 | } |
| 207 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 208 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 209 | set_dict(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 210 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 211 | if (v == NULL || !PyDict_Check(v)) |
| 212 | return "__dict__ must be a dictionary object"; |
| 213 | set_slot(&c->cl_dict, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 214 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 215 | return ""; |
| 216 | } |
| 217 | |
| 218 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 219 | set_bases(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 220 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 221 | int i, n; |
| 222 | |
| 223 | if (v == NULL || !PyTuple_Check(v)) |
| 224 | return "__bases__ must be a tuple object"; |
| 225 | n = PyTuple_Size(v); |
| 226 | for (i = 0; i < n; i++) { |
| 227 | PyObject *x = PyTuple_GET_ITEM(v, i); |
| 228 | if (!PyClass_Check(x)) |
| 229 | return "__bases__ items must be classes"; |
| 230 | if (PyClass_IsSubclass(x, (PyObject *)c)) |
| 231 | return "a __bases__ item causes an inheritance cycle"; |
| 232 | } |
| 233 | set_slot(&c->cl_bases, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 234 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 235 | return ""; |
| 236 | } |
| 237 | |
| 238 | static char * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 239 | set_name(PyClassObject *c, PyObject *v) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 240 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 241 | if (v == NULL || !PyString_Check(v)) |
| 242 | return "__name__ must be a string object"; |
Guido van Rossum | ad89bbc | 2000-06-28 21:57:18 +0000 | [diff] [blame] | 243 | 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] | 244 | return "__name__ must not contain null bytes"; |
| 245 | set_slot(&c->cl_name, v); |
| 246 | return ""; |
| 247 | } |
| 248 | |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 249 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 250 | class_setattr(PyClassObject *op, PyObject *name, PyObject *v) |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 251 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 252 | char *sname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 253 | if (PyEval_GetRestricted()) { |
| 254 | PyErr_SetString(PyExc_RuntimeError, |
Guido van Rossum | ac21f6a | 1995-08-04 04:05:31 +0000 | [diff] [blame] | 255 | "classes are read-only in restricted mode"); |
| 256 | return -1; |
| 257 | } |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 258 | sname = PyString_AsString(name); |
| 259 | if (sname[0] == '_' && sname[1] == '_') { |
| 260 | int n = PyString_Size(name); |
| 261 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 262 | char *err = NULL; |
| 263 | if (strcmp(sname, "__dict__") == 0) |
| 264 | err = set_dict(op, v); |
| 265 | else if (strcmp(sname, "__bases__") == 0) |
| 266 | err = set_bases(op, v); |
| 267 | else if (strcmp(sname, "__name__") == 0) |
| 268 | err = set_name(op, v); |
| 269 | else if (strcmp(sname, "__getattr__") == 0) |
| 270 | set_slot(&op->cl_getattr, v); |
| 271 | else if (strcmp(sname, "__setattr__") == 0) |
| 272 | set_slot(&op->cl_setattr, v); |
| 273 | else if (strcmp(sname, "__delattr__") == 0) |
| 274 | set_slot(&op->cl_delattr, v); |
| 275 | /* For the last three, we fall through to update the |
| 276 | dictionary as well. */ |
| 277 | if (err != NULL) { |
| 278 | if (*err == '\0') |
| 279 | return 0; |
| 280 | PyErr_SetString(PyExc_TypeError, err); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 281 | return -1; |
| 282 | } |
| 283 | } |
| 284 | } |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 285 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 286 | int rv = PyDict_DelItem(op->cl_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 287 | if (rv < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 288 | PyErr_SetString(PyExc_AttributeError, |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 289 | "delete non-existing class attribute"); |
| 290 | return rv; |
| 291 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 292 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 293 | return PyDict_SetItem(op->cl_dict, name, v); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 294 | } |
| 295 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 296 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 297 | class_repr(PyClassObject *op) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 298 | { |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 299 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 300 | char buf[140]; |
| 301 | char *name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 302 | if (op->cl_name == NULL || !PyString_Check(op->cl_name)) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 303 | name = "?"; |
| 304 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 305 | name = PyString_AsString(op->cl_name); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 306 | if (mod == NULL || !PyString_Check(mod)) |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 307 | sprintf(buf, "<class ?.%.100s at %p>", name, op); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 308 | else |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 309 | sprintf(buf, "<class %.50s.%.50s at %p>", |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 310 | PyString_AsString(mod), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 311 | name, op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 312 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 313 | } |
| 314 | |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 315 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 316 | class_str(PyClassObject *op) |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 317 | { |
| 318 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
| 319 | PyObject *name = op->cl_name; |
| 320 | PyObject *res; |
| 321 | int m, n; |
| 322 | |
| 323 | if (name == NULL || !PyString_Check(name)) |
| 324 | return class_repr(op); |
| 325 | if (mod == NULL || !PyString_Check(mod)) { |
| 326 | Py_INCREF(name); |
| 327 | return name; |
| 328 | } |
| 329 | m = PyString_Size(mod); |
| 330 | n = PyString_Size(name); |
| 331 | res = PyString_FromStringAndSize((char *)NULL, m+1+n); |
| 332 | if (res != NULL) { |
| 333 | char *s = PyString_AsString(res); |
| 334 | memcpy(s, PyString_AsString(mod), m); |
| 335 | s += m; |
| 336 | *s++ = '.'; |
| 337 | memcpy(s, PyString_AsString(name), n); |
| 338 | } |
| 339 | return res; |
| 340 | } |
| 341 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 342 | static int |
| 343 | class_traverse(PyClassObject *o, visitproc visit, void *arg) |
| 344 | { |
| 345 | int err; |
| 346 | if (o->cl_bases) { |
| 347 | err = visit(o->cl_bases, arg); |
| 348 | if (err) |
| 349 | return err; |
| 350 | } |
| 351 | if (o->cl_dict) { |
| 352 | err = visit(o->cl_dict, arg); |
| 353 | if (err) |
| 354 | return err; |
| 355 | } |
| 356 | if (o->cl_name) { |
| 357 | err = visit(o->cl_name, arg); |
| 358 | if (err) |
| 359 | return err; |
| 360 | } |
| 361 | if (o->cl_getattr) { |
| 362 | err = visit(o->cl_getattr, arg); |
| 363 | if (err) |
| 364 | return err; |
| 365 | } |
| 366 | if (o->cl_setattr) { |
| 367 | err = visit(o->cl_setattr, arg); |
| 368 | if (err) |
| 369 | return err; |
| 370 | } |
| 371 | if (o->cl_delattr) { |
| 372 | err = visit(o->cl_delattr, arg); |
| 373 | if (err) |
| 374 | return err; |
| 375 | } |
| 376 | return 0; |
| 377 | } |
| 378 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 379 | PyTypeObject PyClass_Type = { |
| 380 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 381 | 0, |
| 382 | "class", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 383 | sizeof(PyClassObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 384 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 385 | (destructor)class_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 386 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 387 | 0, /*tp_getattr*/ |
| 388 | 0, /*tp_setattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 389 | 0, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 390 | (reprfunc)class_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 391 | 0, /*tp_as_number*/ |
| 392 | 0, /*tp_as_sequence*/ |
| 393 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 394 | 0, /*tp_hash*/ |
| 395 | 0, /*tp_call*/ |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 396 | (reprfunc)class_str, /*tp_str*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 397 | (getattrofunc)class_getattr, /*tp_getattro*/ |
| 398 | (setattrofunc)class_setattr, /*tp_setattro*/ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 399 | 0, /* tp_as_buffer */ |
Jeremy Hylton | d08b4c4 | 2000-06-23 19:37:02 +0000 | [diff] [blame] | 400 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /*tp_flags*/ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 401 | 0, /* tp_doc */ |
| 402 | (traverseproc)class_traverse, /* tp_traverse */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 403 | }; |
| 404 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 405 | int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 406 | PyClass_IsSubclass(PyObject *class, PyObject *base) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 407 | { |
| 408 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 409 | PyClassObject *cp; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 410 | if (class == base) |
| 411 | return 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 412 | if (class == NULL || !PyClass_Check(class)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 413 | return 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 414 | cp = (PyClassObject *)class; |
| 415 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 416 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 417 | if (PyClass_IsSubclass(PyTuple_GetItem(cp->cl_bases, i), base)) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 418 | return 1; |
| 419 | } |
| 420 | return 0; |
| 421 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 422 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 423 | |
| 424 | /* Instance objects */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 425 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 426 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 427 | PyInstance_New(PyObject *class, PyObject *arg, PyObject *kw) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 428 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 429 | register PyInstanceObject *inst; |
| 430 | PyObject *init; |
| 431 | static PyObject *initstr; |
| 432 | if (!PyClass_Check(class)) { |
| 433 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 434 | return NULL; |
| 435 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 436 | inst = PyObject_NEW(PyInstanceObject, &PyInstance_Type); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 437 | if (inst == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 438 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 439 | inst->in_dict = PyDict_New(); |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 440 | if (inst->in_dict == NULL) { |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 441 | inst = (PyInstanceObject *) PyObject_AS_GC(inst); |
Guido van Rossum | d7823f2 | 2000-06-28 23:46:07 +0000 | [diff] [blame] | 442 | PyObject_DEL(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 443 | return NULL; |
| 444 | } |
Guido van Rossum | d7823f2 | 2000-06-28 23:46:07 +0000 | [diff] [blame] | 445 | Py_INCREF(class); |
| 446 | inst->in_class = (PyClassObject *)class; |
Neil Schemenauer | e3550a6 | 2000-10-04 16:20:41 +0000 | [diff] [blame] | 447 | PyObject_GC_Init(inst); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 448 | if (initstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 449 | initstr = PyString_InternFromString("__init__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 450 | init = instance_getattr2(inst, initstr); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 451 | if (init == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 452 | if ((arg != NULL && (!PyTuple_Check(arg) || |
| 453 | PyTuple_Size(arg) != 0)) |
| 454 | || (kw != NULL && (!PyDict_Check(kw) || |
| 455 | PyDict_Size(kw) != 0))) { |
| 456 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | a83f270 | 1995-07-26 18:07:32 +0000 | [diff] [blame] | 457 | "this constructor takes no arguments"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 458 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 459 | inst = NULL; |
| 460 | } |
| 461 | } |
| 462 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 463 | PyObject *res = PyEval_CallObjectWithKeywords(init, arg, kw); |
| 464 | Py_DECREF(init); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 465 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 466 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 467 | inst = NULL; |
| 468 | } |
| 469 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 470 | if (res != Py_None) { |
| 471 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 472 | "__init__() should return None"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 473 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 474 | inst = NULL; |
| 475 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 476 | Py_DECREF(res); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 477 | } |
| 478 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 479 | return (PyObject *)inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 480 | } |
| 481 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 482 | /* Instance methods */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 483 | |
| 484 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 485 | instance_dealloc(register PyInstanceObject *inst) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 486 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 487 | PyObject *error_type, *error_value, *error_traceback; |
| 488 | PyObject *del; |
| 489 | static PyObject *delstr; |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 490 | #ifdef Py_REF_DEBUG |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 491 | extern long _Py_RefTotal; |
Skip Montanaro | 4ca150b | 2000-07-08 12:04:57 +0000 | [diff] [blame] | 492 | #endif |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 493 | /* Temporarily resurrect the object. */ |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 494 | #ifdef Py_TRACE_REFS |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 495 | #ifndef Py_REF_DEBUG |
| 496 | # error "Py_TRACE_REFS defined but Py_REF_DEBUG not." |
| 497 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 498 | /* much too complicated if Py_TRACE_REFS defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 499 | inst->ob_type = &PyInstance_Type; |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 500 | _Py_NewReference((PyObject *)inst); |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 501 | #ifdef COUNT_ALLOCS |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 502 | /* compensate for boost in _Py_NewReference; note that |
| 503 | * _Py_RefTotal was also boosted; we'll knock that down later. |
| 504 | */ |
| 505 | inst->ob_type->tp_alloc--; |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 506 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 507 | #else /* !Py_TRACE_REFS */ |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 508 | /* Py_INCREF boosts _Py_RefTotal if Py_REF_DEBUG is defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 509 | Py_INCREF(inst); |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 510 | #endif /* !Py_TRACE_REFS */ |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 511 | |
| 512 | /* Save the current exception, if any. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 513 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 514 | /* Execute __del__ method, if any. */ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 515 | if (delstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 516 | delstr = PyString_InternFromString("__del__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 517 | if ((del = instance_getattr2(inst, delstr)) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 518 | PyObject *res = PyEval_CallObject(del, (PyObject *)NULL); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 519 | if (res == NULL) |
Jeremy Hylton | b709df3 | 2000-09-01 02:47:25 +0000 | [diff] [blame] | 520 | PyErr_WriteUnraisable(del); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 521 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 522 | Py_DECREF(res); |
| 523 | Py_DECREF(del); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 524 | } |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 525 | /* Restore the saved exception. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 526 | PyErr_Restore(error_type, error_value, error_traceback); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 527 | /* Undo the temporary resurrection; can't use DECREF here, it would |
| 528 | * cause a recursive call. |
| 529 | */ |
| 530 | #ifdef Py_REF_DEBUG |
| 531 | /* _Py_RefTotal was boosted either by _Py_NewReference or |
| 532 | * Py_INCREF above. |
| 533 | */ |
| 534 | _Py_RefTotal--; |
| 535 | #endif |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 536 | if (--inst->ob_refcnt > 0) { |
| 537 | #ifdef COUNT_ALLOCS |
| 538 | inst->ob_type->tp_free--; |
| 539 | #endif |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 540 | return; /* __del__ added a reference; don't delete now */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 541 | } |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 542 | #ifdef Py_TRACE_REFS |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 543 | _Py_ForgetReference((PyObject *)inst); |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 544 | #ifdef COUNT_ALLOCS |
| 545 | /* compensate for increment in _Py_ForgetReference */ |
| 546 | inst->ob_type->tp_free--; |
| 547 | #endif |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 548 | #ifndef WITH_CYCLE_GC |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 549 | inst->ob_type = NULL; |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 550 | #endif |
Tim Peters | 6b18491 | 2000-09-17 14:40:17 +0000 | [diff] [blame] | 551 | #endif |
Neil Schemenauer | ce20967 | 2000-09-15 18:57:21 +0000 | [diff] [blame] | 552 | PyObject_GC_Fini(inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 553 | Py_DECREF(inst->in_class); |
| 554 | Py_XDECREF(inst->in_dict); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 555 | inst = (PyInstanceObject *) PyObject_AS_GC(inst); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 556 | PyObject_DEL(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 557 | } |
| 558 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 559 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 560 | instance_getattr1(register PyInstanceObject *inst, PyObject *name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 561 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 562 | register PyObject *v; |
| 563 | register char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 564 | if (sname[0] == '_' && sname[1] == '_') { |
| 565 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 566 | if (PyEval_GetRestricted()) { |
| 567 | PyErr_SetString(PyExc_RuntimeError, |
| 568 | "instance.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 569 | return NULL; |
| 570 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 571 | Py_INCREF(inst->in_dict); |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 572 | return inst->in_dict; |
| 573 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 574 | if (strcmp(sname, "__class__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 575 | Py_INCREF(inst->in_class); |
| 576 | return (PyObject *)inst->in_class; |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 577 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 578 | } |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 579 | v = instance_getattr2(inst, name); |
| 580 | if (v == NULL) { |
| 581 | PyErr_Format(PyExc_AttributeError,"'%.50s' instance has no attribute '%.400s'", |
| 582 | PyString_AS_STRING(inst->in_class->cl_name), sname); |
| 583 | } |
| 584 | return v; |
| 585 | } |
| 586 | |
| 587 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 588 | instance_getattr2(register PyInstanceObject *inst, PyObject *name) |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 589 | { |
| 590 | register PyObject *v; |
| 591 | PyClassObject *class; |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 592 | class = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 593 | v = PyDict_GetItem(inst->in_dict, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 594 | if (v == NULL) { |
| 595 | v = class_lookup(inst->in_class, name, &class); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 596 | if (v == NULL) |
| 597 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 598 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 599 | Py_INCREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 600 | if (class != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 601 | if (PyFunction_Check(v)) { |
| 602 | PyObject *w = PyMethod_New(v, (PyObject *)inst, |
| 603 | (PyObject *)class); |
| 604 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 605 | v = w; |
| 606 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 607 | else if (PyMethod_Check(v)) { |
| 608 | PyObject *im_class = PyMethod_Class(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 609 | /* Only if classes are compatible */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 610 | if (PyClass_IsSubclass((PyObject *)class, im_class)) { |
| 611 | PyObject *im_func = PyMethod_Function(v); |
| 612 | PyObject *w = PyMethod_New(im_func, |
| 613 | (PyObject *)inst, im_class); |
| 614 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 615 | v = w; |
| 616 | } |
| 617 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 618 | } |
| 619 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 620 | } |
| 621 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 622 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 623 | instance_getattr(register PyInstanceObject *inst, PyObject *name) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 624 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 625 | register PyObject *func, *res; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 626 | res = instance_getattr1(inst, name); |
| 627 | if (res == NULL && (func = inst->in_class->cl_getattr) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 628 | PyObject *args; |
| 629 | PyErr_Clear(); |
| 630 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 631 | if (args == NULL) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 632 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 633 | res = PyEval_CallObject(func, args); |
| 634 | Py_DECREF(args); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 635 | } |
| 636 | return res; |
| 637 | } |
| 638 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 639 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 640 | instance_setattr1(PyInstanceObject *inst, PyObject *name, PyObject *v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 641 | { |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 642 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 643 | int rv = PyDict_DelItem(inst->in_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 644 | if (rv < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 645 | PyErr_SetString(PyExc_AttributeError, |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 646 | "delete non-existing instance attribute"); |
| 647 | return rv; |
| 648 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 649 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 650 | return PyDict_SetItem(inst->in_dict, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 651 | } |
| 652 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 653 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 654 | instance_setattr(PyInstanceObject *inst, PyObject *name, PyObject *v) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 655 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 656 | PyObject *func, *args, *res, *tmp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 657 | char *sname = PyString_AsString(name); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 658 | if (sname[0] == '_' && sname[1] == '_') { |
| 659 | int n = PyString_Size(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 660 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 661 | if (strcmp(sname, "__dict__") == 0) { |
| 662 | if (PyEval_GetRestricted()) { |
| 663 | PyErr_SetString(PyExc_RuntimeError, |
| 664 | "__dict__ not accessible in restricted mode"); |
| 665 | return -1; |
| 666 | } |
| 667 | if (v == NULL || !PyDict_Check(v)) { |
| 668 | PyErr_SetString(PyExc_TypeError, |
| 669 | "__dict__ must be set to a dictionary"); |
| 670 | return -1; |
| 671 | } |
| 672 | tmp = inst->in_dict; |
| 673 | Py_INCREF(v); |
| 674 | inst->in_dict = v; |
| 675 | Py_DECREF(tmp); |
| 676 | return 0; |
| 677 | } |
| 678 | if (strcmp(sname, "__class__") == 0) { |
| 679 | if (PyEval_GetRestricted()) { |
| 680 | PyErr_SetString(PyExc_RuntimeError, |
| 681 | "__class__ not accessible in restricted mode"); |
| 682 | return -1; |
| 683 | } |
| 684 | if (v == NULL || !PyClass_Check(v)) { |
| 685 | PyErr_SetString(PyExc_TypeError, |
| 686 | "__class__ must be set to a class"); |
| 687 | return -1; |
| 688 | } |
| 689 | tmp = (PyObject *)(inst->in_class); |
| 690 | Py_INCREF(v); |
| 691 | inst->in_class = (PyClassObject *)v; |
| 692 | Py_DECREF(tmp); |
| 693 | return 0; |
| 694 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 695 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 696 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 697 | if (v == NULL) |
| 698 | func = inst->in_class->cl_delattr; |
| 699 | else |
| 700 | func = inst->in_class->cl_setattr; |
| 701 | if (func == NULL) |
| 702 | return instance_setattr1(inst, name, v); |
| 703 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 704 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 705 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 706 | args = Py_BuildValue("(OOO)", inst, name, v); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 707 | if (args == NULL) |
| 708 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 709 | res = PyEval_CallObject(func, args); |
| 710 | Py_DECREF(args); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 711 | if (res == NULL) |
| 712 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 713 | Py_DECREF(res); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 714 | return 0; |
| 715 | } |
| 716 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 717 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 718 | instance_repr(PyInstanceObject *inst) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 719 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 720 | PyObject *func; |
| 721 | PyObject *res; |
| 722 | static PyObject *reprstr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 723 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 724 | if (reprstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 725 | reprstr = PyString_InternFromString("__repr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 726 | func = instance_getattr(inst, reprstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 727 | if (func == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 728 | char buf[140]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 729 | PyObject *classname = inst->in_class->cl_name; |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 730 | PyObject *mod = PyDict_GetItemString( |
| 731 | inst->in_class->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 732 | char *cname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 733 | if (classname != NULL && PyString_Check(classname)) |
| 734 | cname = PyString_AsString(classname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 735 | else |
| 736 | cname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 737 | PyErr_Clear(); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 738 | if (mod == NULL || !PyString_Check(mod)) |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 739 | sprintf(buf, "<?.%.100s instance at %p>", |
| 740 | cname, inst); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 741 | else |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 742 | sprintf(buf, "<%.50s.%.50s instance at %p>", |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 743 | PyString_AsString(mod), |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 744 | cname, inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 745 | return PyString_FromString(buf); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 746 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 747 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 748 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 749 | return res; |
| 750 | } |
| 751 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 752 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 753 | instance_compare1(PyObject *inst, PyObject *other) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 754 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 755 | return PyInstance_DoBinOp(inst, other, "__cmp__", "__rcmp__", |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 756 | instance_compare1); |
| 757 | } |
| 758 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 759 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 760 | instance_compare(PyObject *inst, PyObject *other) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 761 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 762 | PyObject *result; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 763 | long outcome; |
| 764 | result = instance_compare1(inst, other); |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 765 | if (result == NULL) |
| 766 | return -1; |
| 767 | if (!PyInt_Check(result)) { |
| 768 | Py_DECREF(result); |
| 769 | PyErr_SetString(PyExc_TypeError, |
| 770 | "comparison did not return an int"); |
| 771 | return -1; |
Sjoerd Mullender | b9a6d12 | 1994-10-19 15:11:52 +0000 | [diff] [blame] | 772 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 773 | outcome = PyInt_AsLong(result); |
| 774 | Py_DECREF(result); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 775 | if (outcome < 0) |
| 776 | return -1; |
| 777 | else if (outcome > 0) |
| 778 | return 1; |
| 779 | return 0; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 780 | } |
| 781 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 782 | static long |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 783 | instance_hash(PyInstanceObject *inst) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 784 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 785 | PyObject *func; |
| 786 | PyObject *res; |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 787 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 788 | static PyObject *hashstr, *cmpstr; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 789 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 790 | if (hashstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 791 | hashstr = PyString_InternFromString("__hash__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 792 | func = instance_getattr(inst, hashstr); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 793 | if (func == NULL) { |
| 794 | /* If there is no __cmp__ method, we hash on the address. |
| 795 | If a __cmp__ method exists, there must be a __hash__. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 796 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 797 | if (cmpstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 798 | cmpstr = PyString_InternFromString("__cmp__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 799 | func = instance_getattr(inst, cmpstr); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 800 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 801 | PyErr_Clear(); |
Fred Drake | 13634cf | 2000-06-29 19:17:04 +0000 | [diff] [blame] | 802 | return _Py_HashPointer(inst); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 803 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 804 | PyErr_SetString(PyExc_TypeError, "unhashable instance"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 805 | return -1; |
| 806 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 807 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 808 | Py_DECREF(func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 809 | if (res == NULL) |
| 810 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 811 | if (PyInt_Check(res)) { |
| 812 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 813 | if (outcome == -1) |
| 814 | outcome = -2; |
| 815 | } |
| 816 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 817 | PyErr_SetString(PyExc_TypeError, |
| 818 | "__hash__() should return an int"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 819 | outcome = -1; |
| 820 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 821 | Py_DECREF(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 822 | return outcome; |
| 823 | } |
| 824 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 825 | static int |
| 826 | instance_traverse(PyInstanceObject *o, visitproc visit, void *arg) |
| 827 | { |
| 828 | int err; |
| 829 | if (o->in_class) { |
| 830 | err = visit((PyObject *)(o->in_class), arg); |
| 831 | if (err) |
| 832 | return err; |
| 833 | } |
| 834 | if (o->in_dict) { |
| 835 | err = visit(o->in_dict, arg); |
| 836 | if (err) |
| 837 | return err; |
| 838 | } |
Jeremy Hylton | d22162b | 2000-06-23 17:14:56 +0000 | [diff] [blame] | 839 | return 0; |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 840 | } |
| 841 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 842 | static PyObject *getitemstr, *setitemstr, *delitemstr, *lenstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 843 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 844 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 845 | instance_length(PyInstanceObject *inst) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 846 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 847 | PyObject *func; |
| 848 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 849 | int outcome; |
| 850 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 851 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 852 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 853 | func = instance_getattr(inst, lenstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 854 | if (func == NULL) |
| 855 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 856 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 857 | Py_DECREF(func); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 858 | if (res == NULL) |
| 859 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 860 | if (PyInt_Check(res)) { |
| 861 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 862 | if (outcome < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 863 | PyErr_SetString(PyExc_ValueError, |
| 864 | "__len__() should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 865 | } |
| 866 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 867 | PyErr_SetString(PyExc_TypeError, |
| 868 | "__len__() should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 869 | outcome = -1; |
| 870 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 871 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 872 | return outcome; |
| 873 | } |
| 874 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 875 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 876 | instance_subscript(PyInstanceObject *inst, PyObject *key) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 877 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 878 | PyObject *func; |
| 879 | PyObject *arg; |
| 880 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 881 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 882 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 883 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 884 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 885 | if (func == NULL) |
| 886 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 887 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 888 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 889 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 890 | return NULL; |
| 891 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 892 | res = PyEval_CallObject(func, arg); |
| 893 | Py_DECREF(func); |
| 894 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 895 | return res; |
| 896 | } |
| 897 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 898 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 899 | instance_ass_subscript(PyInstanceObject *inst, PyObject *key, PyObject *value) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 900 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 901 | PyObject *func; |
| 902 | PyObject *arg; |
| 903 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 904 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 905 | if (value == NULL) { |
| 906 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 907 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 908 | func = instance_getattr(inst, delitemstr); |
| 909 | } |
| 910 | else { |
| 911 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 912 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 913 | func = instance_getattr(inst, setitemstr); |
| 914 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 915 | if (func == NULL) |
| 916 | return -1; |
| 917 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 918 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 919 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 920 | arg = Py_BuildValue("(OO)", key, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 921 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 922 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 923 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 924 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 925 | res = PyEval_CallObject(func, arg); |
| 926 | Py_DECREF(func); |
| 927 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 928 | if (res == NULL) |
| 929 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 930 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 931 | return 0; |
| 932 | } |
| 933 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 934 | static PyMappingMethods instance_as_mapping = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 935 | (inquiry)instance_length, /*mp_length*/ |
| 936 | (binaryfunc)instance_subscript, /*mp_subscript*/ |
| 937 | (objobjargproc)instance_ass_subscript, /*mp_ass_subscript*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 938 | }; |
| 939 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 940 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 941 | instance_item(PyInstanceObject *inst, int i) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 942 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 943 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 944 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 945 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 946 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 947 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 948 | if (func == NULL) |
| 949 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 950 | arg = Py_BuildValue("(i)", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 951 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 952 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 953 | return NULL; |
| 954 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 955 | res = PyEval_CallObject(func, arg); |
| 956 | Py_DECREF(func); |
| 957 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 958 | return res; |
| 959 | } |
| 960 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 961 | static PyObject * |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 962 | sliceobj_from_intint(int i, int j) |
| 963 | { |
| 964 | PyObject *start, *end, *res; |
| 965 | |
| 966 | start = PyInt_FromLong((long)i); |
| 967 | if (!start) |
| 968 | return NULL; |
| 969 | |
| 970 | end = PyInt_FromLong((long)j); |
| 971 | if (!end) { |
| 972 | Py_DECREF(start); |
| 973 | return NULL; |
| 974 | } |
| 975 | res = PySlice_New(start, end, NULL); |
| 976 | Py_DECREF(start); |
| 977 | Py_DECREF(end); |
| 978 | return res; |
| 979 | } |
| 980 | |
| 981 | |
| 982 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 983 | instance_slice(PyInstanceObject *inst, int i, int j) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 984 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 985 | PyObject *func, *arg, *res; |
| 986 | static PyObject *getslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 987 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 988 | if (getslicestr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 989 | getslicestr = PyString_InternFromString("__getslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 990 | func = instance_getattr(inst, getslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 991 | |
| 992 | if (func == NULL) { |
| 993 | PyErr_Clear(); |
| 994 | |
| 995 | if (getitemstr == NULL) |
| 996 | getitemstr = PyString_InternFromString("__getitem__"); |
| 997 | func = instance_getattr(inst, getitemstr); |
| 998 | if (func == NULL) |
| 999 | return NULL; |
| 1000 | arg = Py_BuildValue("(N)", sliceobj_from_intint(i, j)); |
| 1001 | } else |
| 1002 | arg = Py_BuildValue("(ii)", i, j); |
| 1003 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1004 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1005 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1006 | return NULL; |
| 1007 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1008 | res = PyEval_CallObject(func, arg); |
| 1009 | Py_DECREF(func); |
| 1010 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1011 | return res; |
| 1012 | } |
| 1013 | |
| 1014 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1015 | instance_ass_item(PyInstanceObject *inst, int i, PyObject *item) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1016 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1017 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1018 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1019 | if (item == NULL) { |
| 1020 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1021 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1022 | func = instance_getattr(inst, delitemstr); |
| 1023 | } |
| 1024 | else { |
| 1025 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1026 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1027 | func = instance_getattr(inst, setitemstr); |
| 1028 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1029 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1030 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1031 | if (item == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1032 | arg = Py_BuildValue("i", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1033 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1034 | arg = Py_BuildValue("(iO)", i, item); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1035 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1036 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1037 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1038 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1039 | res = PyEval_CallObject(func, arg); |
| 1040 | Py_DECREF(func); |
| 1041 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1042 | if (res == NULL) |
| 1043 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1044 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1045 | return 0; |
| 1046 | } |
| 1047 | |
| 1048 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1049 | instance_ass_slice(PyInstanceObject *inst, int i, int j, PyObject *value) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1050 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1051 | PyObject *func, *arg, *res; |
| 1052 | static PyObject *setslicestr, *delslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1053 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1054 | if (value == NULL) { |
| 1055 | if (delslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1056 | delslicestr = |
| 1057 | PyString_InternFromString("__delslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1058 | func = instance_getattr(inst, delslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1059 | if (func == NULL) { |
| 1060 | PyErr_Clear(); |
| 1061 | if (delitemstr == NULL) |
| 1062 | delitemstr = |
| 1063 | PyString_InternFromString("__delitem__"); |
| 1064 | func = instance_getattr(inst, delitemstr); |
| 1065 | if (func == NULL) |
| 1066 | return -1; |
| 1067 | |
| 1068 | arg = Py_BuildValue("(N)", |
| 1069 | sliceobj_from_intint(i, j)); |
| 1070 | } else |
| 1071 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1072 | } |
| 1073 | else { |
| 1074 | if (setslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1075 | setslicestr = |
| 1076 | PyString_InternFromString("__setslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1077 | func = instance_getattr(inst, setslicestr); |
Thomas Wouters | 1d75a79 | 2000-08-17 22:37:32 +0000 | [diff] [blame] | 1078 | if (func == NULL) { |
| 1079 | PyErr_Clear(); |
| 1080 | if (setitemstr == NULL) |
| 1081 | setitemstr = |
| 1082 | PyString_InternFromString("__setitem__"); |
| 1083 | func = instance_getattr(inst, setitemstr); |
| 1084 | if (func == NULL) |
| 1085 | return -1; |
| 1086 | |
| 1087 | arg = Py_BuildValue("(NO)", |
| 1088 | sliceobj_from_intint(i, j), value); |
| 1089 | } else |
| 1090 | arg = Py_BuildValue("(iiO)", i, j, value); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1091 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1092 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1093 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1094 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1095 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1096 | res = PyEval_CallObject(func, arg); |
| 1097 | Py_DECREF(func); |
| 1098 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1099 | if (res == NULL) |
| 1100 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1101 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1102 | return 0; |
| 1103 | } |
| 1104 | |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1105 | static int instance_contains(PyInstanceObject *inst, PyObject *member) |
| 1106 | { |
| 1107 | static PyObject *__contains__; |
| 1108 | PyObject *func, *arg, *res; |
| 1109 | int ret; |
| 1110 | |
| 1111 | if(__contains__ == NULL) { |
| 1112 | __contains__ = PyString_InternFromString("__contains__"); |
| 1113 | if(__contains__ == NULL) |
| 1114 | return -1; |
| 1115 | } |
| 1116 | func = instance_getattr(inst, __contains__); |
| 1117 | if(func == NULL) { |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 1118 | /* fall back to previous behavior */ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1119 | int i, cmp_res; |
| 1120 | |
| 1121 | if(!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1122 | return -1; |
| 1123 | PyErr_Clear(); |
| 1124 | for(i=0;;i++) { |
| 1125 | PyObject *obj = instance_item(inst, i); |
| 1126 | int ret = 0; |
| 1127 | |
| 1128 | if(obj == NULL) { |
| 1129 | if(!PyErr_ExceptionMatches(PyExc_IndexError)) |
| 1130 | return -1; |
| 1131 | PyErr_Clear(); |
| 1132 | return 0; |
| 1133 | } |
| 1134 | if(PyObject_Cmp(obj, member, &cmp_res) == -1) |
| 1135 | ret = -1; |
| 1136 | if(cmp_res == 0) |
| 1137 | ret = 1; |
| 1138 | Py_DECREF(obj); |
| 1139 | if(ret) |
| 1140 | return ret; |
| 1141 | } |
| 1142 | } |
| 1143 | arg = Py_BuildValue("(O)", member); |
| 1144 | if(arg == NULL) { |
| 1145 | Py_DECREF(func); |
| 1146 | return -1; |
| 1147 | } |
| 1148 | res = PyEval_CallObject(func, arg); |
| 1149 | Py_DECREF(func); |
| 1150 | Py_DECREF(arg); |
| 1151 | if(res == NULL) |
| 1152 | return -1; |
| 1153 | ret = PyObject_IsTrue(res); |
| 1154 | Py_DECREF(res); |
| 1155 | return ret; |
| 1156 | } |
| 1157 | |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1158 | static PySequenceMethods |
| 1159 | instance_as_sequence = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1160 | (inquiry)instance_length, /*sq_length*/ |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1161 | 0, /*sq_concat*/ |
| 1162 | 0, /*sq_repeat*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1163 | (intargfunc)instance_item, /*sq_item*/ |
| 1164 | (intintargfunc)instance_slice, /*sq_slice*/ |
| 1165 | (intobjargproc)instance_ass_item, /*sq_ass_item*/ |
| 1166 | (intintobjargproc)instance_ass_slice, /*sq_ass_slice*/ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1167 | (objobjproc)instance_contains, /* sq_contains */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1168 | }; |
| 1169 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1170 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1171 | generic_unary_op(PyInstanceObject *self, PyObject *methodname) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1172 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1173 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1174 | |
| 1175 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 1176 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1177 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1178 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1179 | return res; |
| 1180 | } |
| 1181 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1182 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1183 | /* Implement a binary operator involving at least one class instance. */ |
| 1184 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1185 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1186 | PyInstance_DoBinOp(PyObject *v, PyObject *w, char *opname, char *ropname, |
| 1187 | PyObject * (*thisfunc)(PyObject *, PyObject *)) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1188 | { |
| 1189 | char buf[256]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1190 | PyObject *result = NULL; |
Barry Warsaw | dc55d71 | 2000-08-18 04:57:32 +0000 | [diff] [blame] | 1191 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1192 | if (PyInstance_HalfBinOp(v, w, opname, &result, thisfunc, 0) <= 0) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1193 | return result; |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1194 | if (PyInstance_HalfBinOp(w, v, ropname, &result, thisfunc, 1) <= 0) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1195 | return result; |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 1196 | /* Sigh -- special case for comparisons */ |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 1197 | if (strcmp(opname, "__cmp__") == 0) { |
Barry Warsaw | dc55d71 | 2000-08-18 04:57:32 +0000 | [diff] [blame] | 1198 | Py_uintptr_t iv = (Py_uintptr_t)v; |
| 1199 | Py_uintptr_t iw = (Py_uintptr_t)w; |
| 1200 | long c = (iv < iw) ? -1 : (iv > iw) ? 1 : 0; |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 1201 | return PyInt_FromLong(c); |
| 1202 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1203 | sprintf(buf, "%s nor %s defined for these operands", opname, ropname); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1204 | PyErr_SetString(PyExc_TypeError, buf); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1205 | return NULL; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1206 | } |
| 1207 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1208 | |
| 1209 | /* Try one half of a binary operator involving a class instance. |
| 1210 | Return value: |
| 1211 | -1 if an exception is to be reported right away |
| 1212 | 0 if we have a valid result |
| 1213 | 1 if we could try another operation |
| 1214 | */ |
| 1215 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1216 | static PyObject *coerce_obj; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1217 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1218 | int |
| 1219 | PyInstance_HalfBinOp(PyObject *v, PyObject *w, char *opname, PyObject **r_result, |
| 1220 | PyObject * (*thisfunc)(PyObject *, PyObject *), int swapped) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1221 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1222 | PyObject *func; |
| 1223 | PyObject *args; |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1224 | PyObject *coercefunc; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1225 | PyObject *coerced = NULL; |
| 1226 | PyObject *v1; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1227 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1228 | if (!PyInstance_Check(v)) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1229 | return 1; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1230 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1231 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1232 | if (coerce_obj == NULL) |
| 1233 | return -1; |
| 1234 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1235 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1236 | if (coercefunc == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1237 | PyErr_Clear(); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1238 | } |
| 1239 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1240 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1241 | if (args == NULL) { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1242 | return -1; |
| 1243 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1244 | coerced = PyEval_CallObject(coercefunc, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1245 | Py_DECREF(args); |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1246 | Py_DECREF(coercefunc); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1247 | if (coerced == NULL) { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1248 | return -1; |
| 1249 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1250 | if (coerced == Py_None) { |
| 1251 | Py_DECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1252 | return 1; |
| 1253 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1254 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
| 1255 | Py_DECREF(coerced); |
| 1256 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1257 | "coercion should return None or 2-tuple"); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1258 | return -1; |
| 1259 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1260 | v1 = PyTuple_GetItem(coerced, 0); |
| 1261 | w = PyTuple_GetItem(coerced, 1); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1262 | if (v1 != v) { |
| 1263 | v = v1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1264 | if (!PyInstance_Check(v) && !PyInstance_Check(w)) { |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1265 | if (swapped) |
| 1266 | *r_result = (*thisfunc)(w, v); |
| 1267 | else |
| 1268 | *r_result = (*thisfunc)(v, w); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1269 | Py_DECREF(coerced); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1270 | return *r_result == NULL ? -1 : 0; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1271 | } |
| 1272 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1273 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1274 | func = PyObject_GetAttrString(v, opname); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1275 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1276 | Py_XDECREF(coerced); |
Guido van Rossum | 617c1b0 | 1998-05-28 19:50:02 +0000 | [diff] [blame] | 1277 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1278 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1279 | PyErr_Clear(); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1280 | return 1; |
| 1281 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1282 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1283 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1284 | Py_DECREF(func); |
| 1285 | Py_XDECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1286 | return -1; |
| 1287 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1288 | *r_result = PyEval_CallObject(func, args); |
| 1289 | Py_DECREF(args); |
| 1290 | Py_DECREF(func); |
| 1291 | Py_XDECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1292 | return *r_result == NULL ? -1 : 0; |
| 1293 | } |
| 1294 | |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1295 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1296 | instance_coerce(PyObject **pv, PyObject **pw) |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1297 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1298 | PyObject *v = *pv; |
| 1299 | PyObject *w = *pw; |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1300 | PyObject *coercefunc; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1301 | PyObject *args; |
| 1302 | PyObject *coerced; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1303 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1304 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1305 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1306 | if (coerce_obj == NULL) |
| 1307 | return -1; |
| 1308 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1309 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1310 | if (coercefunc == NULL) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1311 | /* No __coerce__ method: always OK */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1312 | PyErr_Clear(); |
| 1313 | Py_INCREF(v); |
| 1314 | Py_INCREF(w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1315 | return 0; |
| 1316 | } |
| 1317 | /* Has __coerce__ method: call it */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1318 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1319 | if (args == NULL) { |
| 1320 | return -1; |
| 1321 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1322 | coerced = PyEval_CallObject(coercefunc, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1323 | Py_DECREF(args); |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1324 | Py_DECREF(coercefunc); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1325 | if (coerced == NULL) { |
| 1326 | /* __coerce__ call raised an exception */ |
| 1327 | return -1; |
| 1328 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1329 | if (coerced == Py_None) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1330 | /* __coerce__ says "I can't do it" */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1331 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1332 | return 1; |
| 1333 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1334 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1335 | /* __coerce__ return value is malformed */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1336 | Py_DECREF(coerced); |
| 1337 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1338 | "coercion should return None or 2-tuple"); |
| 1339 | return -1; |
| 1340 | } |
| 1341 | /* __coerce__ returned two new values */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1342 | *pv = PyTuple_GetItem(coerced, 0); |
| 1343 | *pw = PyTuple_GetItem(coerced, 1); |
| 1344 | Py_INCREF(*pv); |
| 1345 | Py_INCREF(*pw); |
| 1346 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1347 | return 0; |
| 1348 | } |
| 1349 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1350 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1351 | #define UNARY(funcname, methodname) \ |
Thomas Wouters | c307352 | 2000-07-23 22:09:59 +0000 | [diff] [blame] | 1352 | static PyObject *funcname(PyInstanceObject *self) { \ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1353 | static PyObject *o; \ |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1354 | if (o == NULL) o = PyString_InternFromString(methodname); \ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1355 | return generic_unary_op(self, o); \ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1356 | } |
| 1357 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1358 | UNARY(instance_neg, "__neg__") |
| 1359 | UNARY(instance_pos, "__pos__") |
| 1360 | UNARY(instance_abs, "__abs__") |
| 1361 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1362 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1363 | instance_nonzero(PyInstanceObject *self) |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1364 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1365 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1366 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1367 | static PyObject *nonzerostr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1368 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1369 | if (nonzerostr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1370 | nonzerostr = PyString_InternFromString("__nonzero__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1371 | if ((func = instance_getattr(self, nonzerostr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1372 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1373 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1374 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1375 | if ((func = instance_getattr(self, lenstr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1376 | PyErr_Clear(); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1377 | /* Fall back to the default behavior: |
| 1378 | all instances are nonzero */ |
| 1379 | return 1; |
| 1380 | } |
| 1381 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1382 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1383 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1384 | if (res == NULL) |
| 1385 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1386 | if (!PyInt_Check(res)) { |
| 1387 | Py_DECREF(res); |
| 1388 | PyErr_SetString(PyExc_TypeError, |
| 1389 | "__nonzero__ should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1390 | return -1; |
| 1391 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1392 | outcome = PyInt_AsLong(res); |
| 1393 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1394 | if (outcome < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1395 | PyErr_SetString(PyExc_ValueError, |
| 1396 | "__nonzero__ should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1397 | return -1; |
| 1398 | } |
| 1399 | return outcome > 0; |
| 1400 | } |
| 1401 | |
| 1402 | UNARY(instance_invert, "__invert__") |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 1403 | UNARY(instance_int, "__int__") |
| 1404 | UNARY(instance_long, "__long__") |
| 1405 | UNARY(instance_float, "__float__") |
| 1406 | UNARY(instance_oct, "__oct__") |
| 1407 | UNARY(instance_hex, "__hex__") |
| 1408 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1409 | /* This version is for ternary calls only (z != None) */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1410 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1411 | instance_pow(PyObject *v, PyObject *w, PyObject *z) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1412 | { |
| 1413 | /* XXX Doesn't do coercions... */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1414 | PyObject *func; |
| 1415 | PyObject *args; |
| 1416 | PyObject *result; |
| 1417 | static PyObject *powstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1418 | |
| 1419 | if (powstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1420 | powstr = PyString_InternFromString("__pow__"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1421 | func = PyObject_GetAttr(v, powstr); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1422 | if (func == NULL) |
| 1423 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1424 | args = Py_BuildValue("(OO)", w, z); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1425 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1426 | Py_DECREF(func); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1427 | return NULL; |
| 1428 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1429 | result = PyEval_CallObject(func, args); |
| 1430 | Py_DECREF(func); |
| 1431 | Py_DECREF(args); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1432 | return result; |
| 1433 | } |
| 1434 | |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1435 | static PyObject * |
| 1436 | instance_inplace_pow(PyObject *v, PyObject *w, PyObject *z) |
| 1437 | { |
| 1438 | /* XXX Doesn't do coercions... */ |
| 1439 | PyObject *func; |
| 1440 | PyObject *args; |
| 1441 | PyObject *result; |
| 1442 | static PyObject *ipowstr; |
| 1443 | |
| 1444 | if (ipowstr == NULL) |
| 1445 | ipowstr = PyString_InternFromString("__ipow__"); |
| 1446 | func = PyObject_GetAttr(v, ipowstr); |
| 1447 | if (func == NULL) { |
| 1448 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1449 | return NULL; |
Thomas Wouters | 1de2a79 | 2000-08-25 10:47:46 +0000 | [diff] [blame] | 1450 | PyErr_Clear(); |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1451 | return instance_pow(v, w, z); |
| 1452 | } |
| 1453 | args = Py_BuildValue("(OO)", w, z); |
| 1454 | if (args == NULL) { |
| 1455 | Py_DECREF(func); |
| 1456 | return NULL; |
| 1457 | } |
| 1458 | result = PyEval_CallObject(func, args); |
| 1459 | Py_DECREF(func); |
| 1460 | Py_DECREF(args); |
| 1461 | return result; |
| 1462 | } |
| 1463 | |
| 1464 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1465 | static PyNumberMethods instance_as_number = { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1466 | 0, /*nb_add*/ |
| 1467 | 0, /*nb_subtract*/ |
| 1468 | 0, /*nb_multiply*/ |
| 1469 | 0, /*nb_divide*/ |
| 1470 | 0, /*nb_remainder*/ |
| 1471 | 0, /*nb_divmod*/ |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 1472 | (ternaryfunc)instance_pow, /*nb_power*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1473 | (unaryfunc)instance_neg, /*nb_negative*/ |
| 1474 | (unaryfunc)instance_pos, /*nb_positive*/ |
| 1475 | (unaryfunc)instance_abs, /*nb_absolute*/ |
| 1476 | (inquiry)instance_nonzero, /*nb_nonzero*/ |
| 1477 | (unaryfunc)instance_invert, /*nb_invert*/ |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1478 | 0, /*nb_lshift*/ |
| 1479 | 0, /*nb_rshift*/ |
| 1480 | 0, /*nb_and*/ |
| 1481 | 0, /*nb_xor*/ |
| 1482 | 0, /*nb_or*/ |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1483 | (coercion)instance_coerce, /*nb_coerce*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1484 | (unaryfunc)instance_int, /*nb_int*/ |
| 1485 | (unaryfunc)instance_long, /*nb_long*/ |
| 1486 | (unaryfunc)instance_float, /*nb_float*/ |
| 1487 | (unaryfunc)instance_oct, /*nb_oct*/ |
| 1488 | (unaryfunc)instance_hex, /*nb_hex*/ |
Thomas Wouters | e289e0b | 2000-08-24 20:08:19 +0000 | [diff] [blame] | 1489 | 0, /*nb_inplace_add*/ |
| 1490 | 0, /*nb_inplace_subtract*/ |
| 1491 | 0, /*nb_inplace_multiply*/ |
| 1492 | 0, /*nb_inplace_divide*/ |
| 1493 | 0, /*nb_inplace_remainder*/ |
| 1494 | (ternaryfunc)instance_inplace_pow, /*nb_inplace_power*/ |
| 1495 | 0, /*nb_inplace_lshift*/ |
| 1496 | 0, /*nb_inplace_rshift*/ |
| 1497 | 0, /*nb_inplace_and*/ |
| 1498 | 0, /*nb_inplace_xor*/ |
| 1499 | 0, /*nb_inplace_or*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1500 | }; |
| 1501 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1502 | PyTypeObject PyInstance_Type = { |
| 1503 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1504 | 0, |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1505 | "instance", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1506 | sizeof(PyInstanceObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1507 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1508 | (destructor)instance_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 1509 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1510 | 0, /*tp_getattr*/ |
| 1511 | 0, /*tp_setattr*/ |
| 1512 | instance_compare, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1513 | (reprfunc)instance_repr, /*tp_repr*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1514 | &instance_as_number, /*tp_as_number*/ |
| 1515 | &instance_as_sequence, /*tp_as_sequence*/ |
| 1516 | &instance_as_mapping, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1517 | (hashfunc)instance_hash, /*tp_hash*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1518 | 0, /*tp_call*/ |
| 1519 | 0, /*tp_str*/ |
| 1520 | (getattrofunc)instance_getattr, /*tp_getattro*/ |
| 1521 | (setattrofunc)instance_setattr, /*tp_setattro*/ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1522 | 0, /* tp_as_buffer */ |
Jeremy Hylton | d08b4c4 | 2000-06-23 19:37:02 +0000 | [diff] [blame] | 1523 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /*tp_flags*/ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1524 | 0, /* tp_doc */ |
| 1525 | (traverseproc)instance_traverse, /* tp_traverse */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1526 | }; |
| 1527 | |
| 1528 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1529 | /* Instance method objects are used for two purposes: |
| 1530 | (a) as bound instance methods (returned by instancename.methodname) |
| 1531 | (b) as unbound methods (returned by ClassName.methodname) |
| 1532 | In case (b), im_self is NULL |
| 1533 | */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1534 | |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1535 | static PyMethodObject *free_list; |
| 1536 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1537 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1538 | PyMethod_New(PyObject *func, PyObject *self, PyObject *class) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1539 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1540 | register PyMethodObject *im; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1541 | if (!PyCallable_Check(func)) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1542 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1543 | return NULL; |
| 1544 | } |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1545 | im = free_list; |
| 1546 | if (im != NULL) { |
| 1547 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1548 | PyObject_INIT(im, &PyMethod_Type); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1549 | } |
| 1550 | else { |
| 1551 | im = PyObject_NEW(PyMethodObject, &PyMethod_Type); |
| 1552 | if (im == NULL) |
| 1553 | return NULL; |
| 1554 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1555 | Py_INCREF(func); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1556 | im->im_func = func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1557 | Py_XINCREF(self); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1558 | im->im_self = self; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1559 | Py_INCREF(class); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1560 | im->im_class = class; |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1561 | PyObject_GC_Init(im); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1562 | return (PyObject *)im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1563 | } |
| 1564 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1565 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1566 | PyMethod_Function(register PyObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1567 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1568 | if (!PyMethod_Check(im)) { |
| 1569 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1570 | return NULL; |
| 1571 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1572 | return ((PyMethodObject *)im)->im_func; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1573 | } |
| 1574 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1575 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1576 | PyMethod_Self(register PyObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1577 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1578 | if (!PyMethod_Check(im)) { |
| 1579 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1580 | return NULL; |
| 1581 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1582 | return ((PyMethodObject *)im)->im_self; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1583 | } |
| 1584 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1585 | PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1586 | PyMethod_Class(register PyObject *im) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1587 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1588 | if (!PyMethod_Check(im)) { |
| 1589 | PyErr_BadInternalCall(); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1590 | return NULL; |
| 1591 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1592 | return ((PyMethodObject *)im)->im_class; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1593 | } |
| 1594 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1595 | /* Class method methods */ |
| 1596 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1597 | #define OFF(x) offsetof(PyMethodObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1598 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1599 | static struct memberlist instancemethod_memberlist[] = { |
| 1600 | {"im_func", T_OBJECT, OFF(im_func)}, |
| 1601 | {"im_self", T_OBJECT, OFF(im_self)}, |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1602 | {"im_class", T_OBJECT, OFF(im_class)}, |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1603 | /* Dummies that are not handled by getattr() except for __members__ */ |
| 1604 | {"__doc__", T_INT, 0}, |
| 1605 | {"__name__", T_INT, 0}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1606 | {NULL} /* Sentinel */ |
| 1607 | }; |
| 1608 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1609 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1610 | instancemethod_getattr(register PyMethodObject *im, PyObject *name) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1611 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1612 | char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1613 | if (sname[0] == '_') { |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1614 | /* Inherit __name__ and __doc__ from the callable object |
| 1615 | implementing the method */ |
| 1616 | if (strcmp(sname, "__name__") == 0 || |
| 1617 | strcmp(sname, "__doc__") == 0) |
| 1618 | return PyObject_GetAttr(im->im_func, name); |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1619 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1620 | if (PyEval_GetRestricted()) { |
| 1621 | PyErr_SetString(PyExc_RuntimeError, |
| 1622 | "instance-method attributes not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 1623 | return NULL; |
| 1624 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1625 | return PyMember_Get((char *)im, instancemethod_memberlist, sname); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1626 | } |
| 1627 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1628 | static void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1629 | instancemethod_dealloc(register PyMethodObject *im) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1630 | { |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1631 | PyObject_GC_Fini(im); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1632 | Py_DECREF(im->im_func); |
| 1633 | Py_XDECREF(im->im_self); |
| 1634 | Py_DECREF(im->im_class); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1635 | im->im_self = (PyObject *)free_list; |
| 1636 | free_list = im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1637 | } |
| 1638 | |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1639 | static int |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1640 | instancemethod_compare(PyMethodObject *a, PyMethodObject *b) |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1641 | { |
Guido van Rossum | e9df727 | 1995-04-06 14:46:51 +0000 | [diff] [blame] | 1642 | if (a->im_self != b->im_self) |
| 1643 | return (a->im_self < b->im_self) ? -1 : 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1644 | return PyObject_Compare(a->im_func, b->im_func); |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1645 | } |
| 1646 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1647 | static PyObject * |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1648 | instancemethod_repr(PyMethodObject *a) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1649 | { |
| 1650 | char buf[240]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1651 | PyInstanceObject *self = (PyInstanceObject *)(a->im_self); |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1652 | PyObject *func = a->im_func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1653 | PyClassObject *class = (PyClassObject *)(a->im_class); |
| 1654 | PyObject *fclassname, *iclassname, *funcname; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1655 | char *fcname, *icname, *fname; |
| 1656 | fclassname = class->cl_name; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1657 | if (PyFunction_Check(func)) { |
| 1658 | funcname = ((PyFunctionObject *)func)->func_name; |
| 1659 | Py_INCREF(funcname); |
| 1660 | } |
| 1661 | else { |
| 1662 | funcname = PyObject_GetAttrString(func,"__name__"); |
| 1663 | if (funcname == NULL) |
| 1664 | PyErr_Clear(); |
| 1665 | } |
| 1666 | if (funcname != NULL && PyString_Check(funcname)) |
| 1667 | fname = PyString_AS_STRING(funcname); |
| 1668 | else |
| 1669 | fname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1670 | if (fclassname != NULL && PyString_Check(fclassname)) |
| 1671 | fcname = PyString_AsString(fclassname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1672 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1673 | fcname = "?"; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1674 | if (self == NULL) |
| 1675 | sprintf(buf, "<unbound method %.100s.%.100s>", fcname, fname); |
| 1676 | else { |
| 1677 | iclassname = self->in_class->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1678 | if (iclassname != NULL && PyString_Check(iclassname)) |
| 1679 | icname = PyString_AsString(iclassname); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1680 | else |
| 1681 | icname = "?"; |
Fred Drake | a44d353 | 2000-06-30 15:01:00 +0000 | [diff] [blame] | 1682 | sprintf(buf, "<method %.60s.%.60s of %.60s instance at %p>", |
| 1683 | fcname, fname, icname, self); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1684 | } |
Guido van Rossum | 42636dc | 1999-10-11 14:03:12 +0000 | [diff] [blame] | 1685 | Py_XDECREF(funcname); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1686 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1687 | } |
| 1688 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1689 | static long |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1690 | instancemethod_hash(PyMethodObject *a) |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1691 | { |
| 1692 | long x, y; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1693 | if (a->im_self == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1694 | x = PyObject_Hash(Py_None); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1695 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1696 | x = PyObject_Hash(a->im_self); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1697 | if (x == -1) |
| 1698 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1699 | y = PyObject_Hash(a->im_func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1700 | if (y == -1) |
| 1701 | return -1; |
| 1702 | return x ^ y; |
| 1703 | } |
| 1704 | |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1705 | static int |
| 1706 | instancemethod_traverse(PyMethodObject *im, visitproc visit, void *arg) |
| 1707 | { |
| 1708 | int err; |
| 1709 | if (im->im_func) { |
| 1710 | err = visit(im->im_func, arg); |
| 1711 | if (err) |
| 1712 | return err; |
| 1713 | } |
| 1714 | if (im->im_self) { |
| 1715 | err = visit(im->im_self, arg); |
| 1716 | if (err) |
| 1717 | return err; |
| 1718 | } |
| 1719 | if (im->im_class) { |
| 1720 | err = visit(im->im_class, arg); |
| 1721 | if (err) |
| 1722 | return err; |
| 1723 | } |
Jeremy Hylton | d22162b | 2000-06-23 17:14:56 +0000 | [diff] [blame] | 1724 | return 0; |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1725 | } |
| 1726 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1727 | PyTypeObject PyMethod_Type = { |
| 1728 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1729 | 0, |
Guido van Rossum | 569fce7 | 1991-04-16 08:38:43 +0000 | [diff] [blame] | 1730 | "instance method", |
Jeremy Hylton | c5007aa | 2000-06-30 05:02:53 +0000 | [diff] [blame] | 1731 | sizeof(PyMethodObject) + PyGC_HEAD_SIZE, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1732 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1733 | (destructor)instancemethod_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1734 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1735 | 0, /*tp_getattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1736 | 0, /*tp_setattr*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1737 | (cmpfunc)instancemethod_compare, /*tp_compare*/ |
| 1738 | (reprfunc)instancemethod_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1739 | 0, /*tp_as_number*/ |
| 1740 | 0, /*tp_as_sequence*/ |
| 1741 | 0, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1742 | (hashfunc)instancemethod_hash, /*tp_hash*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1743 | 0, /*tp_call*/ |
| 1744 | 0, /*tp_str*/ |
| 1745 | (getattrofunc)instancemethod_getattr, /*tp_getattro*/ |
| 1746 | 0, /*tp_setattro*/ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1747 | 0, /* tp_as_buffer */ |
Jeremy Hylton | d08b4c4 | 2000-06-23 19:37:02 +0000 | [diff] [blame] | 1748 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_GC, /*tp_flags*/ |
Jeremy Hylton | 8caad49 | 2000-06-23 14:18:11 +0000 | [diff] [blame] | 1749 | 0, /* tp_doc */ |
| 1750 | (traverseproc)instancemethod_traverse, /* tp_traverse */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1751 | }; |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1752 | |
| 1753 | /* Clear out the free list */ |
| 1754 | |
| 1755 | void |
Fred Drake | 7991247 | 2000-07-09 04:06:11 +0000 | [diff] [blame] | 1756 | PyMethod_Fini(void) |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1757 | { |
| 1758 | while (free_list) { |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1759 | PyMethodObject *im = free_list; |
| 1760 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | 4cc6ac7 | 2000-07-01 01:00:38 +0000 | [diff] [blame] | 1761 | im = (PyMethodObject *) PyObject_AS_GC(im); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1762 | PyObject_DEL(im); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1763 | } |
| 1764 | } |