Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6610ad9 | 1995-01-04 19:07:38 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 32 | /* Class object implementation */ |
| 33 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 34 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 35 | #include "structmember.h" |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 36 | |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 37 | /* Forward */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 38 | static PyObject *class_lookup |
| 39 | Py_PROTO((PyClassObject *, PyObject *, PyClassObject **)); |
| 40 | static PyObject *instance_getattr1 Py_PROTO((PyInstanceObject *, PyObject *)); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 41 | static PyObject *instance_getattr2 Py_PROTO((PyInstanceObject *, PyObject *)); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 42 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 43 | static PyObject *getattrstr, *setattrstr, *delattrstr; |
| 44 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 45 | PyObject * |
| 46 | PyClass_New(bases, dict, name) |
| 47 | PyObject *bases; /* NULL or tuple of classobjects! */ |
| 48 | PyObject *dict; |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 49 | PyObject *name; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 50 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 51 | PyClassObject *op, *dummy; |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 52 | static PyObject *docstr, *modstr, *namestr; |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 53 | if (docstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 54 | docstr= PyString_InternFromString("__doc__"); |
Guido van Rossum | 019f424 | 1996-08-21 14:54:28 +0000 | [diff] [blame] | 55 | if (docstr == NULL) |
| 56 | return NULL; |
| 57 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 58 | if (modstr == NULL) { |
| 59 | modstr= PyString_InternFromString("__module__"); |
| 60 | if (modstr == NULL) |
| 61 | return NULL; |
| 62 | } |
| 63 | if (namestr == NULL) { |
| 64 | namestr= PyString_InternFromString("__name__"); |
| 65 | if (namestr == NULL) |
| 66 | return NULL; |
| 67 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 68 | if (name == NULL || !PyString_Check(name)) { |
| 69 | PyErr_SetString(PyExc_SystemError, |
| 70 | "PyClass_New: name must be a string"); |
| 71 | return NULL; |
| 72 | } |
| 73 | if (dict == NULL || !PyDict_Check(dict)) { |
| 74 | PyErr_SetString(PyExc_SystemError, |
| 75 | "PyClass_New: dict must be a dictionary"); |
| 76 | return NULL; |
| 77 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 78 | if (PyDict_GetItem(dict, docstr) == NULL) { |
| 79 | if (PyDict_SetItem(dict, docstr, Py_None) < 0) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 80 | return NULL; |
| 81 | } |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 82 | if (PyDict_GetItem(dict, modstr) == NULL) { |
| 83 | PyObject *globals = PyEval_GetGlobals(); |
| 84 | if (globals != NULL) { |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 85 | PyObject *modname = PyDict_GetItem(globals, namestr); |
| 86 | if (modname != NULL) { |
| 87 | if (PyDict_SetItem(dict, modstr, modname) < 0) |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 88 | return NULL; |
| 89 | } |
| 90 | } |
| 91 | } |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 92 | if (bases == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 93 | bases = PyTuple_New(0); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 94 | if (bases == NULL) |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 95 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 96 | } |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 97 | else { |
| 98 | int i; |
| 99 | if (!PyTuple_Check(bases)) { |
| 100 | PyErr_SetString(PyExc_SystemError, |
| 101 | "PyClass_New: bases must be a tuple"); |
| 102 | return NULL; |
| 103 | } |
| 104 | i = PyTuple_Size(bases); |
| 105 | while (--i >= 0) { |
| 106 | if (!PyClass_Check(PyTuple_GetItem(bases, i))) { |
| 107 | PyErr_SetString(PyExc_SystemError, |
| 108 | "PyClass_New: base must be a class"); |
| 109 | return NULL; |
| 110 | } |
| 111 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 112 | Py_INCREF(bases); |
Guido van Rossum | 04d73c4 | 1997-10-07 14:54:11 +0000 | [diff] [blame] | 113 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 114 | op = PyObject_NEW(PyClassObject, &PyClass_Type); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 115 | if (op == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 116 | Py_DECREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 117 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 118 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 119 | op->cl_bases = bases; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 120 | Py_INCREF(dict); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 121 | op->cl_dict = dict; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 122 | Py_XINCREF(name); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 123 | op->cl_name = name; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 124 | if (getattrstr == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 125 | getattrstr = PyString_InternFromString("__getattr__"); |
| 126 | setattrstr = PyString_InternFromString("__setattr__"); |
| 127 | delattrstr = PyString_InternFromString("__delattr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 128 | } |
| 129 | op->cl_getattr = class_lookup(op, getattrstr, &dummy); |
| 130 | op->cl_setattr = class_lookup(op, setattrstr, &dummy); |
| 131 | op->cl_delattr = class_lookup(op, delattrstr, &dummy); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 132 | Py_XINCREF(op->cl_getattr); |
| 133 | Py_XINCREF(op->cl_setattr); |
| 134 | Py_XINCREF(op->cl_delattr); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 135 | return (PyObject *) op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | /* Class methods */ |
| 139 | |
| 140 | static void |
| 141 | class_dealloc(op) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 142 | PyClassObject *op; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 143 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 144 | Py_DECREF(op->cl_bases); |
| 145 | Py_DECREF(op->cl_dict); |
| 146 | Py_XDECREF(op->cl_name); |
Guido van Rossum | 152d817 | 1998-08-04 14:59:16 +0000 | [diff] [blame] | 147 | Py_XDECREF(op->cl_getattr); |
| 148 | Py_XDECREF(op->cl_setattr); |
| 149 | Py_XDECREF(op->cl_delattr); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 150 | PyObject_DEL(op); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 151 | } |
| 152 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 153 | static PyObject * |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 154 | class_lookup(cp, name, pclass) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 155 | PyClassObject *cp; |
| 156 | PyObject *name; |
| 157 | PyClassObject **pclass; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 158 | { |
| 159 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 160 | PyObject *value = PyDict_GetItem(cp->cl_dict, name); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 161 | if (value != NULL) { |
| 162 | *pclass = cp; |
| 163 | return value; |
| 164 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 165 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 166 | for (i = 0; i < n; i++) { |
Guido van Rossum | 7cc56eb | 1997-09-12 20:04:46 +0000 | [diff] [blame] | 167 | /* XXX What if one of the bases is not a class? */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 168 | PyObject *v = class_lookup( |
| 169 | (PyClassObject *) |
| 170 | PyTuple_GetItem(cp->cl_bases, i), name, pclass); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 171 | if (v != NULL) |
| 172 | return v; |
| 173 | } |
| 174 | return NULL; |
| 175 | } |
| 176 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 177 | static PyObject * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 178 | class_getattr(op, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 179 | register PyClassObject *op; |
| 180 | PyObject *name; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 181 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 182 | register PyObject *v; |
| 183 | register char *sname = PyString_AsString(name); |
| 184 | PyClassObject *class; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 185 | if (sname[0] == '_' && sname[1] == '_') { |
| 186 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 187 | if (PyEval_GetRestricted()) { |
| 188 | PyErr_SetString(PyExc_RuntimeError, |
| 189 | "class.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 190 | return NULL; |
| 191 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 192 | Py_INCREF(op->cl_dict); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 193 | return op->cl_dict; |
| 194 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 195 | if (strcmp(sname, "__bases__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 196 | Py_INCREF(op->cl_bases); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 197 | return op->cl_bases; |
| 198 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 199 | if (strcmp(sname, "__name__") == 0) { |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 200 | if (op->cl_name == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 201 | v = Py_None; |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 202 | else |
| 203 | v = op->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 204 | Py_INCREF(v); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 205 | return v; |
| 206 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 207 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 208 | v = class_lookup(op, name, &class); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 209 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 210 | PyErr_SetObject(PyExc_AttributeError, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 211 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 212 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 213 | Py_INCREF(v); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 214 | if (PyFunction_Check(v)) { |
| 215 | PyObject *w = PyMethod_New(v, (PyObject *)NULL, |
| 216 | (PyObject *)class); |
| 217 | Py_DECREF(v); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 218 | v = w; |
| 219 | } |
| 220 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 221 | } |
| 222 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 223 | static void |
| 224 | set_slot(slot, v) |
| 225 | PyObject **slot; |
| 226 | PyObject *v; |
| 227 | { |
| 228 | PyObject *temp = *slot; |
| 229 | Py_XINCREF(v); |
| 230 | *slot = v; |
| 231 | Py_XDECREF(temp); |
| 232 | } |
| 233 | |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 234 | static void |
| 235 | set_attr_slots(c) |
| 236 | PyClassObject *c; |
| 237 | { |
| 238 | PyClassObject *dummy; |
| 239 | |
| 240 | set_slot(&c->cl_getattr, class_lookup(c, getattrstr, &dummy)); |
| 241 | set_slot(&c->cl_setattr, class_lookup(c, setattrstr, &dummy)); |
| 242 | set_slot(&c->cl_delattr, class_lookup(c, delattrstr, &dummy)); |
| 243 | } |
| 244 | |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 245 | static char * |
| 246 | set_dict(c, v) |
| 247 | PyClassObject *c; |
| 248 | PyObject *v; |
| 249 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 250 | if (v == NULL || !PyDict_Check(v)) |
| 251 | return "__dict__ must be a dictionary object"; |
| 252 | set_slot(&c->cl_dict, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 253 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 254 | return ""; |
| 255 | } |
| 256 | |
| 257 | static char * |
| 258 | set_bases(c, v) |
| 259 | PyClassObject *c; |
| 260 | PyObject *v; |
| 261 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 262 | int i, n; |
| 263 | |
| 264 | if (v == NULL || !PyTuple_Check(v)) |
| 265 | return "__bases__ must be a tuple object"; |
| 266 | n = PyTuple_Size(v); |
| 267 | for (i = 0; i < n; i++) { |
| 268 | PyObject *x = PyTuple_GET_ITEM(v, i); |
| 269 | if (!PyClass_Check(x)) |
| 270 | return "__bases__ items must be classes"; |
| 271 | if (PyClass_IsSubclass(x, (PyObject *)c)) |
| 272 | return "a __bases__ item causes an inheritance cycle"; |
| 273 | } |
| 274 | set_slot(&c->cl_bases, v); |
Guido van Rossum | 7ba3043 | 1998-07-08 13:34:48 +0000 | [diff] [blame] | 275 | set_attr_slots(c); |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 276 | return ""; |
| 277 | } |
| 278 | |
| 279 | static char * |
| 280 | set_name(c, v) |
| 281 | PyClassObject *c; |
| 282 | PyObject *v; |
| 283 | { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 284 | if (v == NULL || !PyString_Check(v)) |
| 285 | return "__name__ must be a string object"; |
Guido van Rossum | e0fdf6f | 1998-06-12 15:03:58 +0000 | [diff] [blame] | 286 | if ((long)strlen(PyString_AS_STRING(v)) != PyString_GET_SIZE(v)) |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 287 | return "__name__ must not contain null bytes"; |
| 288 | set_slot(&c->cl_name, v); |
| 289 | return ""; |
| 290 | } |
| 291 | |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 292 | static int |
| 293 | class_setattr(op, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 294 | PyClassObject *op; |
| 295 | PyObject *name; |
| 296 | PyObject *v; |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 297 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 298 | char *sname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 299 | if (PyEval_GetRestricted()) { |
| 300 | PyErr_SetString(PyExc_RuntimeError, |
Guido van Rossum | ac21f6a | 1995-08-04 04:05:31 +0000 | [diff] [blame] | 301 | "classes are read-only in restricted mode"); |
| 302 | return -1; |
| 303 | } |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 304 | sname = PyString_AsString(name); |
| 305 | if (sname[0] == '_' && sname[1] == '_') { |
| 306 | int n = PyString_Size(name); |
| 307 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | a63eff6 | 1998-05-29 21:37:21 +0000 | [diff] [blame] | 308 | char *err = NULL; |
| 309 | if (strcmp(sname, "__dict__") == 0) |
| 310 | err = set_dict(op, v); |
| 311 | else if (strcmp(sname, "__bases__") == 0) |
| 312 | err = set_bases(op, v); |
| 313 | else if (strcmp(sname, "__name__") == 0) |
| 314 | err = set_name(op, v); |
| 315 | else if (strcmp(sname, "__getattr__") == 0) |
| 316 | set_slot(&op->cl_getattr, v); |
| 317 | else if (strcmp(sname, "__setattr__") == 0) |
| 318 | set_slot(&op->cl_setattr, v); |
| 319 | else if (strcmp(sname, "__delattr__") == 0) |
| 320 | set_slot(&op->cl_delattr, v); |
| 321 | /* For the last three, we fall through to update the |
| 322 | dictionary as well. */ |
| 323 | if (err != NULL) { |
| 324 | if (*err == '\0') |
| 325 | return 0; |
| 326 | PyErr_SetString(PyExc_TypeError, err); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 327 | return -1; |
| 328 | } |
| 329 | } |
| 330 | } |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 331 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 332 | int rv = PyDict_DelItem(op->cl_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 333 | if (rv < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 334 | PyErr_SetString(PyExc_AttributeError, |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 335 | "delete non-existing class attribute"); |
| 336 | return rv; |
| 337 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 338 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 339 | return PyDict_SetItem(op->cl_dict, name, v); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 340 | } |
| 341 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 342 | static PyObject * |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 343 | class_repr(op) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 344 | PyClassObject *op; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 345 | { |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 346 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 347 | char buf[140]; |
| 348 | char *name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 349 | if (op->cl_name == NULL || !PyString_Check(op->cl_name)) |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 350 | name = "?"; |
| 351 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 352 | name = PyString_AsString(op->cl_name); |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 353 | if (mod == NULL || !PyString_Check(mod)) |
| 354 | sprintf(buf, "<class ?.%.100s at %lx>", name, (long)op); |
| 355 | else |
| 356 | sprintf(buf, "<class %.50s.%.50s at %lx>", |
| 357 | PyString_AsString(mod), |
| 358 | name, (long)op); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 359 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 360 | } |
| 361 | |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 362 | static PyObject * |
| 363 | class_str(op) |
| 364 | PyClassObject *op; |
| 365 | { |
| 366 | PyObject *mod = PyDict_GetItemString(op->cl_dict, "__module__"); |
| 367 | PyObject *name = op->cl_name; |
| 368 | PyObject *res; |
| 369 | int m, n; |
| 370 | |
| 371 | if (name == NULL || !PyString_Check(name)) |
| 372 | return class_repr(op); |
| 373 | if (mod == NULL || !PyString_Check(mod)) { |
| 374 | Py_INCREF(name); |
| 375 | return name; |
| 376 | } |
| 377 | m = PyString_Size(mod); |
| 378 | n = PyString_Size(name); |
| 379 | res = PyString_FromStringAndSize((char *)NULL, m+1+n); |
| 380 | if (res != NULL) { |
| 381 | char *s = PyString_AsString(res); |
| 382 | memcpy(s, PyString_AsString(mod), m); |
| 383 | s += m; |
| 384 | *s++ = '.'; |
| 385 | memcpy(s, PyString_AsString(name), n); |
| 386 | } |
| 387 | return res; |
| 388 | } |
| 389 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 390 | PyTypeObject PyClass_Type = { |
| 391 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 392 | 0, |
| 393 | "class", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 394 | sizeof(PyClassObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 395 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 396 | (destructor)class_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 397 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 398 | 0, /*tp_getattr*/ |
| 399 | 0, /*tp_setattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 400 | 0, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 401 | (reprfunc)class_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 402 | 0, /*tp_as_number*/ |
| 403 | 0, /*tp_as_sequence*/ |
| 404 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 405 | 0, /*tp_hash*/ |
| 406 | 0, /*tp_call*/ |
Guido van Rossum | 4a2a621 | 1997-10-20 23:26:11 +0000 | [diff] [blame] | 407 | (reprfunc)class_str, /*tp_str*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 408 | (getattrofunc)class_getattr, /*tp_getattro*/ |
| 409 | (setattrofunc)class_setattr, /*tp_setattro*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 410 | }; |
| 411 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 412 | int |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 413 | PyClass_IsSubclass(class, base) |
| 414 | PyObject *class; |
| 415 | PyObject *base; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 416 | { |
| 417 | int i, n; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 418 | PyClassObject *cp; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 419 | if (class == base) |
| 420 | return 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 421 | if (class == NULL || !PyClass_Check(class)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 422 | return 0; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 423 | cp = (PyClassObject *)class; |
| 424 | n = PyTuple_Size(cp->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 425 | for (i = 0; i < n; i++) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 426 | if (PyClass_IsSubclass(PyTuple_GetItem(cp->cl_bases, i), base)) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 427 | return 1; |
| 428 | } |
| 429 | return 0; |
| 430 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 431 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 432 | |
| 433 | /* Instance objects */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 434 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 435 | PyObject * |
| 436 | PyInstance_New(class, arg, kw) |
| 437 | PyObject *class; |
| 438 | PyObject *arg; |
| 439 | PyObject *kw; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 440 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 441 | register PyInstanceObject *inst; |
| 442 | PyObject *init; |
| 443 | static PyObject *initstr; |
| 444 | if (!PyClass_Check(class)) { |
| 445 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 446 | return NULL; |
| 447 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 448 | inst = PyObject_NEW(PyInstanceObject, &PyInstance_Type); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 449 | if (inst == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 450 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 451 | Py_INCREF(class); |
| 452 | inst->in_class = (PyClassObject *)class; |
| 453 | inst->in_dict = PyDict_New(); |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 454 | if (inst->in_dict == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 455 | Py_DECREF(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 456 | return NULL; |
| 457 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 458 | if (initstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 459 | initstr = PyString_InternFromString("__init__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 460 | init = instance_getattr2(inst, initstr); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 461 | if (init == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 462 | if ((arg != NULL && (!PyTuple_Check(arg) || |
| 463 | PyTuple_Size(arg) != 0)) |
| 464 | || (kw != NULL && (!PyDict_Check(kw) || |
| 465 | PyDict_Size(kw) != 0))) { |
| 466 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | a83f270 | 1995-07-26 18:07:32 +0000 | [diff] [blame] | 467 | "this constructor takes no arguments"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 468 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 469 | inst = NULL; |
| 470 | } |
| 471 | } |
| 472 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 473 | PyObject *res = PyEval_CallObjectWithKeywords(init, arg, kw); |
| 474 | Py_DECREF(init); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 475 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 476 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 477 | inst = NULL; |
| 478 | } |
| 479 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 480 | if (res != Py_None) { |
| 481 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 482 | "__init__() should return None"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 483 | Py_DECREF(inst); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 484 | inst = NULL; |
| 485 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 486 | Py_DECREF(res); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 487 | } |
| 488 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 489 | return (PyObject *)inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 490 | } |
| 491 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 492 | /* Instance methods */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 493 | |
| 494 | static void |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 495 | instance_dealloc(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 496 | register PyInstanceObject *inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 497 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 498 | PyObject *error_type, *error_value, *error_traceback; |
| 499 | PyObject *del; |
| 500 | static PyObject *delstr; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 501 | /* Call the __del__ method if it exists. First temporarily |
| 502 | revive the object and save the current exception, if any. */ |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 503 | #ifdef Py_TRACE_REFS |
| 504 | /* much too complicated if Py_TRACE_REFS defined */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 505 | extern long _Py_RefTotal; |
| 506 | inst->ob_type = &PyInstance_Type; |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 507 | _Py_NewReference((PyObject *)inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 508 | _Py_RefTotal--; /* compensate for increment in NEWREF */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 509 | #ifdef COUNT_ALLOCS |
| 510 | inst->ob_type->tp_alloc--; /* ditto */ |
| 511 | #endif |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 512 | #else /* !Py_TRACE_REFS */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 513 | Py_INCREF(inst); |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 514 | #endif /* !Py_TRACE_REFS */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 515 | PyErr_Fetch(&error_type, &error_value, &error_traceback); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 516 | if (delstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 517 | delstr = PyString_InternFromString("__del__"); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 518 | if ((del = instance_getattr2(inst, delstr)) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 519 | PyObject *res = PyEval_CallObject(del, (PyObject *)NULL); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 520 | if (res == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 521 | PyObject *f, *t, *v, *tb; |
| 522 | PyErr_Fetch(&t, &v, &tb); |
| 523 | f = PySys_GetObject("stderr"); |
Guido van Rossum | 22a85e5 | 1996-09-11 22:51:57 +0000 | [diff] [blame] | 524 | if (f != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 525 | PyFile_WriteString("Exception ", f); |
Guido van Rossum | cbd1e4e | 1996-12-05 21:52:32 +0000 | [diff] [blame] | 526 | if (t) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 527 | PyFile_WriteObject(t, f, Py_PRINT_RAW); |
| 528 | if (v && v != Py_None) { |
| 529 | PyFile_WriteString(": ", f); |
| 530 | PyFile_WriteObject(v, f, 0); |
Guido van Rossum | cbd1e4e | 1996-12-05 21:52:32 +0000 | [diff] [blame] | 531 | } |
| 532 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 533 | PyFile_WriteString(" in ", f); |
| 534 | PyFile_WriteObject(del, f, 0); |
| 535 | PyFile_WriteString(" ignored\n", f); |
| 536 | PyErr_Clear(); /* Just in case */ |
Guido van Rossum | 22a85e5 | 1996-09-11 22:51:57 +0000 | [diff] [blame] | 537 | } |
Guido van Rossum | cbd1e4e | 1996-12-05 21:52:32 +0000 | [diff] [blame] | 538 | Py_XDECREF(t); |
| 539 | Py_XDECREF(v); |
| 540 | Py_XDECREF(tb); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 541 | } |
| 542 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 543 | Py_DECREF(res); |
| 544 | Py_DECREF(del); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 545 | } |
| 546 | /* Restore the saved exception and undo the temporary revival */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 547 | PyErr_Restore(error_type, error_value, error_traceback); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 548 | /* Can't use DECREF here, it would cause a recursive call */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 549 | if (--inst->ob_refcnt > 0) { |
| 550 | #ifdef COUNT_ALLOCS |
| 551 | inst->ob_type->tp_free--; |
| 552 | #endif |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 553 | return; /* __del__ added a reference; don't delete now */ |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 554 | } |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 555 | #ifdef Py_TRACE_REFS |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 556 | #ifdef COUNT_ALLOCS |
| 557 | inst->ob_type->tp_free--; /* compensate for increment in UNREF */ |
| 558 | #endif |
Guido van Rossum | bffd683 | 2000-01-20 22:32:56 +0000 | [diff] [blame] | 559 | _Py_ForgetReference((PyObject *)inst); |
Sjoerd Mullender | 740f357 | 1995-08-28 09:00:43 +0000 | [diff] [blame] | 560 | inst->ob_type = NULL; |
Guido van Rossum | 441e4ab | 1996-05-23 22:46:51 +0000 | [diff] [blame] | 561 | #endif /* Py_TRACE_REFS */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 562 | Py_DECREF(inst->in_class); |
| 563 | Py_XDECREF(inst->in_dict); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 564 | PyObject_DEL(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 565 | } |
| 566 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 567 | static PyObject * |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 568 | instance_getattr1(inst, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 569 | register PyInstanceObject *inst; |
| 570 | PyObject *name; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 571 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 572 | register PyObject *v; |
| 573 | register char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 574 | if (sname[0] == '_' && sname[1] == '_') { |
| 575 | if (strcmp(sname, "__dict__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 576 | if (PyEval_GetRestricted()) { |
| 577 | PyErr_SetString(PyExc_RuntimeError, |
| 578 | "instance.__dict__ not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 579 | return NULL; |
| 580 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 581 | Py_INCREF(inst->in_dict); |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 582 | return inst->in_dict; |
| 583 | } |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 584 | if (strcmp(sname, "__class__") == 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 585 | Py_INCREF(inst->in_class); |
| 586 | return (PyObject *)inst->in_class; |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 587 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 588 | } |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 589 | v = instance_getattr2(inst, name); |
| 590 | if (v == NULL) { |
| 591 | PyErr_Format(PyExc_AttributeError,"'%.50s' instance has no attribute '%.400s'", |
| 592 | PyString_AS_STRING(inst->in_class->cl_name), sname); |
| 593 | } |
| 594 | return v; |
| 595 | } |
| 596 | |
| 597 | static PyObject * |
| 598 | instance_getattr2(inst, name) |
| 599 | register PyInstanceObject *inst; |
| 600 | PyObject *name; |
| 601 | { |
| 602 | register PyObject *v; |
| 603 | PyClassObject *class; |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 604 | class = NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 605 | v = PyDict_GetItem(inst->in_dict, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 606 | if (v == NULL) { |
| 607 | v = class_lookup(inst->in_class, name, &class); |
Jeremy Hylton | 9e392e2 | 2000-04-26 20:39:20 +0000 | [diff] [blame] | 608 | if (v == NULL) |
| 609 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 610 | } |
Guido van Rossum | 0add15f | 1997-05-09 01:07:15 +0000 | [diff] [blame] | 611 | Py_INCREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 612 | if (class != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 613 | if (PyFunction_Check(v)) { |
| 614 | PyObject *w = PyMethod_New(v, (PyObject *)inst, |
| 615 | (PyObject *)class); |
| 616 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 617 | v = w; |
| 618 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 619 | else if (PyMethod_Check(v)) { |
| 620 | PyObject *im_class = PyMethod_Class(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 621 | /* Only if classes are compatible */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 622 | if (PyClass_IsSubclass((PyObject *)class, im_class)) { |
| 623 | PyObject *im_func = PyMethod_Function(v); |
| 624 | PyObject *w = PyMethod_New(im_func, |
| 625 | (PyObject *)inst, im_class); |
| 626 | Py_DECREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 627 | v = w; |
| 628 | } |
| 629 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 630 | } |
| 631 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 632 | } |
| 633 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 634 | static PyObject * |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 635 | instance_getattr(inst, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 636 | register PyInstanceObject *inst; |
| 637 | PyObject *name; |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 638 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 639 | register PyObject *func, *res; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 640 | res = instance_getattr1(inst, name); |
| 641 | if (res == NULL && (func = inst->in_class->cl_getattr) != NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 642 | PyObject *args; |
| 643 | PyErr_Clear(); |
| 644 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 645 | if (args == NULL) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 646 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 647 | res = PyEval_CallObject(func, args); |
| 648 | Py_DECREF(args); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 649 | } |
| 650 | return res; |
| 651 | } |
| 652 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 653 | static int |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 654 | instance_setattr1(inst, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 655 | PyInstanceObject *inst; |
| 656 | PyObject *name; |
| 657 | PyObject *v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 658 | { |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 659 | if (v == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 660 | int rv = PyDict_DelItem(inst->in_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 661 | if (rv < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 662 | PyErr_SetString(PyExc_AttributeError, |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 663 | "delete non-existing instance attribute"); |
| 664 | return rv; |
| 665 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 666 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 667 | return PyDict_SetItem(inst->in_dict, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 668 | } |
| 669 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 670 | static int |
| 671 | instance_setattr(inst, name, v) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 672 | PyInstanceObject *inst; |
| 673 | PyObject *name; |
| 674 | PyObject *v; |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 675 | { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 676 | PyObject *func, *args, *res, *tmp; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 677 | char *sname = PyString_AsString(name); |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 678 | if (sname[0] == '_' && sname[1] == '_') { |
| 679 | int n = PyString_Size(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 680 | if (sname[n-1] == '_' && sname[n-2] == '_') { |
Guido van Rossum | b2173c3 | 1997-08-25 21:23:56 +0000 | [diff] [blame] | 681 | if (strcmp(sname, "__dict__") == 0) { |
| 682 | if (PyEval_GetRestricted()) { |
| 683 | PyErr_SetString(PyExc_RuntimeError, |
| 684 | "__dict__ not accessible in restricted mode"); |
| 685 | return -1; |
| 686 | } |
| 687 | if (v == NULL || !PyDict_Check(v)) { |
| 688 | PyErr_SetString(PyExc_TypeError, |
| 689 | "__dict__ must be set to a dictionary"); |
| 690 | return -1; |
| 691 | } |
| 692 | tmp = inst->in_dict; |
| 693 | Py_INCREF(v); |
| 694 | inst->in_dict = v; |
| 695 | Py_DECREF(tmp); |
| 696 | return 0; |
| 697 | } |
| 698 | if (strcmp(sname, "__class__") == 0) { |
| 699 | if (PyEval_GetRestricted()) { |
| 700 | PyErr_SetString(PyExc_RuntimeError, |
| 701 | "__class__ not accessible in restricted mode"); |
| 702 | return -1; |
| 703 | } |
| 704 | if (v == NULL || !PyClass_Check(v)) { |
| 705 | PyErr_SetString(PyExc_TypeError, |
| 706 | "__class__ must be set to a class"); |
| 707 | return -1; |
| 708 | } |
| 709 | tmp = (PyObject *)(inst->in_class); |
| 710 | Py_INCREF(v); |
| 711 | inst->in_class = (PyClassObject *)v; |
| 712 | Py_DECREF(tmp); |
| 713 | return 0; |
| 714 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 715 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 716 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 717 | if (v == NULL) |
| 718 | func = inst->in_class->cl_delattr; |
| 719 | else |
| 720 | func = inst->in_class->cl_setattr; |
| 721 | if (func == NULL) |
| 722 | return instance_setattr1(inst, name, v); |
| 723 | if (v == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 724 | args = Py_BuildValue("(OO)", inst, name); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 725 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 726 | args = Py_BuildValue("(OOO)", inst, name, v); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 727 | if (args == NULL) |
| 728 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 729 | res = PyEval_CallObject(func, args); |
| 730 | Py_DECREF(args); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 731 | if (res == NULL) |
| 732 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 733 | Py_DECREF(res); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 734 | return 0; |
| 735 | } |
| 736 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 737 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 738 | instance_repr(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 739 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 740 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 741 | PyObject *func; |
| 742 | PyObject *res; |
| 743 | static PyObject *reprstr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 744 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 745 | if (reprstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 746 | reprstr = PyString_InternFromString("__repr__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 747 | func = instance_getattr(inst, reprstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 748 | if (func == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 749 | char buf[140]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 750 | PyObject *classname = inst->in_class->cl_name; |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 751 | PyObject *mod = PyDict_GetItemString( |
| 752 | inst->in_class->cl_dict, "__module__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 753 | char *cname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 754 | if (classname != NULL && PyString_Check(classname)) |
| 755 | cname = PyString_AsString(classname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 756 | else |
| 757 | cname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 758 | PyErr_Clear(); |
Guido van Rossum | b7f1afe | 1997-12-03 00:06:02 +0000 | [diff] [blame] | 759 | if (mod == NULL || !PyString_Check(mod)) |
| 760 | sprintf(buf, "<?.%.100s instance at %lx>", |
| 761 | cname, (long)inst); |
| 762 | else |
| 763 | sprintf(buf, "<%.50s.%.50s instance at %lx>", |
| 764 | PyString_AsString(mod), |
| 765 | cname, (long)inst); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 766 | return PyString_FromString(buf); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 767 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 768 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 769 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 770 | return res; |
| 771 | } |
| 772 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 773 | static PyObject * |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 774 | instance_compare1(inst, other) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 775 | PyObject *inst, *other; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 776 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 777 | return PyInstance_DoBinOp(inst, other, "__cmp__", "__rcmp__", |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 778 | instance_compare1); |
| 779 | } |
| 780 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 781 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 782 | instance_compare(inst, other) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 783 | PyObject *inst, *other; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 784 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 785 | PyObject *result; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 786 | long outcome; |
| 787 | result = instance_compare1(inst, other); |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 788 | if (result == NULL) |
| 789 | return -1; |
| 790 | if (!PyInt_Check(result)) { |
| 791 | Py_DECREF(result); |
| 792 | PyErr_SetString(PyExc_TypeError, |
| 793 | "comparison did not return an int"); |
| 794 | return -1; |
Sjoerd Mullender | b9a6d12 | 1994-10-19 15:11:52 +0000 | [diff] [blame] | 795 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 796 | outcome = PyInt_AsLong(result); |
| 797 | Py_DECREF(result); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 798 | if (outcome < 0) |
| 799 | return -1; |
| 800 | else if (outcome > 0) |
| 801 | return 1; |
| 802 | return 0; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 803 | } |
| 804 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 805 | static long |
| 806 | instance_hash(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 807 | PyInstanceObject *inst; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 808 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 809 | PyObject *func; |
| 810 | PyObject *res; |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 811 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 812 | static PyObject *hashstr, *cmpstr; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 813 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 814 | if (hashstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 815 | hashstr = PyString_InternFromString("__hash__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 816 | func = instance_getattr(inst, hashstr); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 817 | if (func == NULL) { |
| 818 | /* If there is no __cmp__ method, we hash on the address. |
| 819 | If a __cmp__ method exists, there must be a __hash__. */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 820 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 821 | if (cmpstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 822 | cmpstr = PyString_InternFromString("__cmp__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 823 | func = instance_getattr(inst, cmpstr); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 824 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 825 | PyErr_Clear(); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 826 | outcome = (long)inst; |
| 827 | if (outcome == -1) |
| 828 | outcome = -2; |
| 829 | return outcome; |
| 830 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 831 | PyErr_SetString(PyExc_TypeError, "unhashable instance"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 832 | return -1; |
| 833 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 834 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 835 | Py_DECREF(func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 836 | if (res == NULL) |
| 837 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 838 | if (PyInt_Check(res)) { |
| 839 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 840 | if (outcome == -1) |
| 841 | outcome = -2; |
| 842 | } |
| 843 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 844 | PyErr_SetString(PyExc_TypeError, |
| 845 | "__hash__() should return an int"); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 846 | outcome = -1; |
| 847 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 848 | Py_DECREF(res); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 849 | return outcome; |
| 850 | } |
| 851 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 852 | static PyObject *getitemstr, *setitemstr, *delitemstr, *lenstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 853 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 854 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 855 | instance_length(inst) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 856 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 857 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 858 | PyObject *func; |
| 859 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 860 | int outcome; |
| 861 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 862 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 863 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 864 | func = instance_getattr(inst, lenstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 865 | if (func == NULL) |
| 866 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 867 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 868 | Py_DECREF(func); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 869 | if (res == NULL) |
| 870 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 871 | if (PyInt_Check(res)) { |
| 872 | outcome = PyInt_AsLong(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 873 | if (outcome < 0) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 874 | PyErr_SetString(PyExc_ValueError, |
| 875 | "__len__() should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 876 | } |
| 877 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 878 | PyErr_SetString(PyExc_TypeError, |
| 879 | "__len__() should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 880 | outcome = -1; |
| 881 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 882 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 883 | return outcome; |
| 884 | } |
| 885 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 886 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 887 | instance_subscript(inst, key) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 888 | PyInstanceObject *inst; |
| 889 | PyObject *key; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 890 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 891 | PyObject *func; |
| 892 | PyObject *arg; |
| 893 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 894 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 895 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 896 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 897 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 898 | if (func == NULL) |
| 899 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 900 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 901 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 902 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 903 | return NULL; |
| 904 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 905 | res = PyEval_CallObject(func, arg); |
| 906 | Py_DECREF(func); |
| 907 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 908 | return res; |
| 909 | } |
| 910 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 911 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 912 | instance_ass_subscript(inst, key, value) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 913 | PyInstanceObject*inst; |
| 914 | PyObject *key; |
| 915 | PyObject *value; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 916 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 917 | PyObject *func; |
| 918 | PyObject *arg; |
| 919 | PyObject *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 920 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 921 | if (value == NULL) { |
| 922 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 923 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 924 | func = instance_getattr(inst, delitemstr); |
| 925 | } |
| 926 | else { |
| 927 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 928 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 929 | func = instance_getattr(inst, setitemstr); |
| 930 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 931 | if (func == NULL) |
| 932 | return -1; |
| 933 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 934 | arg = Py_BuildValue("(O)", key); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 935 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 936 | arg = Py_BuildValue("(OO)", key, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 937 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 938 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 939 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 940 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 941 | res = PyEval_CallObject(func, arg); |
| 942 | Py_DECREF(func); |
| 943 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 944 | if (res == NULL) |
| 945 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 946 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 947 | return 0; |
| 948 | } |
| 949 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 950 | static PyMappingMethods instance_as_mapping = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 951 | (inquiry)instance_length, /*mp_length*/ |
| 952 | (binaryfunc)instance_subscript, /*mp_subscript*/ |
| 953 | (objobjargproc)instance_ass_subscript, /*mp_ass_subscript*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 954 | }; |
| 955 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 956 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 957 | instance_item(inst, i) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 958 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 959 | int i; |
| 960 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 961 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 962 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 963 | if (getitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 964 | getitemstr = PyString_InternFromString("__getitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 965 | func = instance_getattr(inst, getitemstr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 966 | if (func == NULL) |
| 967 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 968 | arg = Py_BuildValue("(i)", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 969 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 970 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 971 | return NULL; |
| 972 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 973 | res = PyEval_CallObject(func, arg); |
| 974 | Py_DECREF(func); |
| 975 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 976 | return res; |
| 977 | } |
| 978 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 979 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 980 | instance_slice(inst, i, j) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 981 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 982 | int i, j; |
| 983 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 984 | PyObject *func, *arg, *res; |
| 985 | static PyObject *getslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 986 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 987 | if (getslicestr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 988 | getslicestr = PyString_InternFromString("__getslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 989 | func = instance_getattr(inst, getslicestr); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 990 | if (func == NULL) |
| 991 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 992 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 993 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 994 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 995 | return NULL; |
| 996 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 997 | res = PyEval_CallObject(func, arg); |
| 998 | Py_DECREF(func); |
| 999 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1000 | return res; |
| 1001 | } |
| 1002 | |
| 1003 | static int |
| 1004 | instance_ass_item(inst, i, item) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1005 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1006 | int i; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1007 | PyObject *item; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1008 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1009 | PyObject *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1010 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1011 | if (item == NULL) { |
| 1012 | if (delitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1013 | delitemstr = PyString_InternFromString("__delitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1014 | func = instance_getattr(inst, delitemstr); |
| 1015 | } |
| 1016 | else { |
| 1017 | if (setitemstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1018 | setitemstr = PyString_InternFromString("__setitem__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1019 | func = instance_getattr(inst, setitemstr); |
| 1020 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1021 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1022 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1023 | if (item == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1024 | arg = Py_BuildValue("i", i); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1025 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1026 | arg = Py_BuildValue("(iO)", i, item); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1027 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1028 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1029 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1030 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1031 | res = PyEval_CallObject(func, arg); |
| 1032 | Py_DECREF(func); |
| 1033 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1034 | if (res == NULL) |
| 1035 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1036 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1037 | return 0; |
| 1038 | } |
| 1039 | |
| 1040 | static int |
| 1041 | instance_ass_slice(inst, i, j, value) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1042 | PyInstanceObject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1043 | int i, j; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1044 | PyObject *value; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1045 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1046 | PyObject *func, *arg, *res; |
| 1047 | static PyObject *setslicestr, *delslicestr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1048 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1049 | if (value == NULL) { |
| 1050 | if (delslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1051 | delslicestr = |
| 1052 | PyString_InternFromString("__delslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1053 | func = instance_getattr(inst, delslicestr); |
| 1054 | } |
| 1055 | else { |
| 1056 | if (setslicestr == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1057 | setslicestr = |
| 1058 | PyString_InternFromString("__setslice__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1059 | func = instance_getattr(inst, setslicestr); |
| 1060 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1061 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1062 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1063 | if (value == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1064 | arg = Py_BuildValue("(ii)", i, j); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1065 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1066 | arg = Py_BuildValue("(iiO)", i, j, value); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1067 | if (arg == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1068 | Py_DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 1069 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1070 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1071 | res = PyEval_CallObject(func, arg); |
| 1072 | Py_DECREF(func); |
| 1073 | Py_DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1074 | if (res == NULL) |
| 1075 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1076 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1077 | return 0; |
| 1078 | } |
| 1079 | |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1080 | static int instance_contains(PyInstanceObject *inst, PyObject *member) |
| 1081 | { |
| 1082 | static PyObject *__contains__; |
| 1083 | PyObject *func, *arg, *res; |
| 1084 | int ret; |
| 1085 | |
| 1086 | if(__contains__ == NULL) { |
| 1087 | __contains__ = PyString_InternFromString("__contains__"); |
| 1088 | if(__contains__ == NULL) |
| 1089 | return -1; |
| 1090 | } |
| 1091 | func = instance_getattr(inst, __contains__); |
| 1092 | if(func == NULL) { |
| 1093 | /* fall back to previous behaviour */ |
| 1094 | int i, cmp_res; |
| 1095 | |
| 1096 | if(!PyErr_ExceptionMatches(PyExc_AttributeError)) |
| 1097 | return -1; |
| 1098 | PyErr_Clear(); |
| 1099 | for(i=0;;i++) { |
| 1100 | PyObject *obj = instance_item(inst, i); |
| 1101 | int ret = 0; |
| 1102 | |
| 1103 | if(obj == NULL) { |
| 1104 | if(!PyErr_ExceptionMatches(PyExc_IndexError)) |
| 1105 | return -1; |
| 1106 | PyErr_Clear(); |
| 1107 | return 0; |
| 1108 | } |
| 1109 | if(PyObject_Cmp(obj, member, &cmp_res) == -1) |
| 1110 | ret = -1; |
| 1111 | if(cmp_res == 0) |
| 1112 | ret = 1; |
| 1113 | Py_DECREF(obj); |
| 1114 | if(ret) |
| 1115 | return ret; |
| 1116 | } |
| 1117 | } |
| 1118 | arg = Py_BuildValue("(O)", member); |
| 1119 | if(arg == NULL) { |
| 1120 | Py_DECREF(func); |
| 1121 | return -1; |
| 1122 | } |
| 1123 | res = PyEval_CallObject(func, arg); |
| 1124 | Py_DECREF(func); |
| 1125 | Py_DECREF(arg); |
| 1126 | if(res == NULL) |
| 1127 | return -1; |
| 1128 | ret = PyObject_IsTrue(res); |
| 1129 | Py_DECREF(res); |
| 1130 | return ret; |
| 1131 | } |
| 1132 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1133 | static PySequenceMethods instance_as_sequence = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1134 | (inquiry)instance_length, /*sq_length*/ |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1135 | 0, /*sq_concat*/ |
| 1136 | 0, /*sq_repeat*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1137 | (intargfunc)instance_item, /*sq_item*/ |
| 1138 | (intintargfunc)instance_slice, /*sq_slice*/ |
| 1139 | (intobjargproc)instance_ass_item, /*sq_ass_item*/ |
| 1140 | (intintobjargproc)instance_ass_slice, /*sq_ass_slice*/ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1141 | (objobjproc)instance_contains, /* sq_contains */ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1142 | }; |
| 1143 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1144 | static PyObject * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1145 | generic_unary_op(self, methodname) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1146 | PyInstanceObject *self; |
| 1147 | PyObject *methodname; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1148 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1149 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1150 | |
| 1151 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 1152 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1153 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1154 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1155 | return res; |
| 1156 | } |
| 1157 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1158 | |
| 1159 | /* Forward */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1160 | static int halfbinop Py_PROTO((PyObject *, PyObject *, char *, PyObject **, |
| 1161 | PyObject * (*) Py_PROTO((PyObject *, PyObject *)), int )); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1162 | |
| 1163 | |
| 1164 | /* Implement a binary operator involving at least one class instance. */ |
| 1165 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1166 | PyObject * |
| 1167 | PyInstance_DoBinOp(v, w, opname, ropname, thisfunc) |
| 1168 | PyObject *v; |
| 1169 | PyObject *w; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1170 | char *opname; |
| 1171 | char *ropname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1172 | PyObject * (*thisfunc) Py_PROTO((PyObject *, PyObject *)); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1173 | { |
| 1174 | char buf[256]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1175 | PyObject *result = NULL; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1176 | if (halfbinop(v, w, opname, &result, thisfunc, 0) <= 0) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1177 | return result; |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1178 | if (halfbinop(w, v, ropname, &result, thisfunc, 1) <= 0) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1179 | return result; |
Guido van Rossum | c8b6df9 | 1997-05-23 00:06:51 +0000 | [diff] [blame] | 1180 | /* Sigh -- special case for comnparisons */ |
| 1181 | if (strcmp(opname, "__cmp__") == 0) { |
| 1182 | long c = (v < w) ? -1 : (v > w) ? 1 : 0; |
| 1183 | return PyInt_FromLong(c); |
| 1184 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1185 | sprintf(buf, "%s nor %s defined for these operands", opname, ropname); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1186 | PyErr_SetString(PyExc_TypeError, buf); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1187 | return NULL; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1188 | } |
| 1189 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1190 | |
| 1191 | /* Try one half of a binary operator involving a class instance. |
| 1192 | Return value: |
| 1193 | -1 if an exception is to be reported right away |
| 1194 | 0 if we have a valid result |
| 1195 | 1 if we could try another operation |
| 1196 | */ |
| 1197 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1198 | static PyObject *coerce_obj; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1199 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1200 | static int |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1201 | halfbinop(v, w, opname, r_result, thisfunc, swapped) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1202 | PyObject *v; |
| 1203 | PyObject *w; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1204 | char *opname; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1205 | PyObject **r_result; |
| 1206 | PyObject * (*thisfunc) Py_PROTO((PyObject *, PyObject *)); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1207 | int swapped; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1208 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1209 | PyObject *func; |
| 1210 | PyObject *args; |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1211 | PyObject *coercefunc; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1212 | PyObject *coerced = NULL; |
| 1213 | PyObject *v1; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1214 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1215 | if (!PyInstance_Check(v)) |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1216 | return 1; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1217 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1218 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1219 | if (coerce_obj == NULL) |
| 1220 | return -1; |
| 1221 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1222 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1223 | if (coercefunc == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1224 | PyErr_Clear(); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1225 | } |
| 1226 | else { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1227 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1228 | if (args == NULL) { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1229 | return -1; |
| 1230 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1231 | coerced = PyEval_CallObject(coercefunc, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1232 | Py_DECREF(args); |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1233 | Py_DECREF(coercefunc); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1234 | if (coerced == NULL) { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1235 | return -1; |
| 1236 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1237 | if (coerced == Py_None) { |
| 1238 | Py_DECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1239 | return 1; |
| 1240 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1241 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
| 1242 | Py_DECREF(coerced); |
| 1243 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1244 | "coercion should return None or 2-tuple"); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1245 | return -1; |
| 1246 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1247 | v1 = PyTuple_GetItem(coerced, 0); |
| 1248 | w = PyTuple_GetItem(coerced, 1); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1249 | if (v1 != v) { |
| 1250 | v = v1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1251 | if (!PyInstance_Check(v) && !PyInstance_Check(w)) { |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1252 | if (swapped) |
| 1253 | *r_result = (*thisfunc)(w, v); |
| 1254 | else |
| 1255 | *r_result = (*thisfunc)(v, w); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1256 | Py_DECREF(coerced); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1257 | return *r_result == NULL ? -1 : 0; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1258 | } |
| 1259 | } |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1260 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1261 | func = PyObject_GetAttrString(v, opname); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1262 | if (func == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1263 | Py_XDECREF(coerced); |
Guido van Rossum | 617c1b0 | 1998-05-28 19:50:02 +0000 | [diff] [blame] | 1264 | if (!PyErr_ExceptionMatches(PyExc_AttributeError)) |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1265 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1266 | PyErr_Clear(); |
Guido van Rossum | e7d444f | 1995-01-07 12:35:18 +0000 | [diff] [blame] | 1267 | return 1; |
| 1268 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1269 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1270 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1271 | Py_DECREF(func); |
| 1272 | Py_XDECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1273 | return -1; |
| 1274 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1275 | *r_result = PyEval_CallObject(func, args); |
| 1276 | Py_DECREF(args); |
| 1277 | Py_DECREF(func); |
| 1278 | Py_XDECREF(coerced); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1279 | return *r_result == NULL ? -1 : 0; |
| 1280 | } |
| 1281 | |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1282 | static int |
| 1283 | instance_coerce(pv, pw) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1284 | PyObject **pv; |
| 1285 | PyObject **pw; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1286 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1287 | PyObject *v = *pv; |
| 1288 | PyObject *w = *pw; |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1289 | PyObject *coercefunc; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1290 | PyObject *args; |
| 1291 | PyObject *coerced; |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1292 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1293 | if (coerce_obj == NULL) { |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1294 | coerce_obj = PyString_InternFromString("__coerce__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1295 | if (coerce_obj == NULL) |
| 1296 | return -1; |
| 1297 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1298 | coercefunc = PyObject_GetAttr(v, coerce_obj); |
| 1299 | if (coercefunc == NULL) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1300 | /* No __coerce__ method: always OK */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1301 | PyErr_Clear(); |
| 1302 | Py_INCREF(v); |
| 1303 | Py_INCREF(w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1304 | return 0; |
| 1305 | } |
| 1306 | /* Has __coerce__ method: call it */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1307 | args = Py_BuildValue("(O)", w); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1308 | if (args == NULL) { |
| 1309 | return -1; |
| 1310 | } |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1311 | coerced = PyEval_CallObject(coercefunc, args); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1312 | Py_DECREF(args); |
Guido van Rossum | 3931df9 | 1997-11-18 19:23:07 +0000 | [diff] [blame] | 1313 | Py_DECREF(coercefunc); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1314 | if (coerced == NULL) { |
| 1315 | /* __coerce__ call raised an exception */ |
| 1316 | return -1; |
| 1317 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1318 | if (coerced == Py_None) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1319 | /* __coerce__ says "I can't do it" */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1320 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1321 | return 1; |
| 1322 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1323 | if (!PyTuple_Check(coerced) || PyTuple_Size(coerced) != 2) { |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1324 | /* __coerce__ return value is malformed */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1325 | Py_DECREF(coerced); |
| 1326 | PyErr_SetString(PyExc_TypeError, |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1327 | "coercion should return None or 2-tuple"); |
| 1328 | return -1; |
| 1329 | } |
| 1330 | /* __coerce__ returned two new values */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1331 | *pv = PyTuple_GetItem(coerced, 0); |
| 1332 | *pw = PyTuple_GetItem(coerced, 1); |
| 1333 | Py_INCREF(*pv); |
| 1334 | Py_INCREF(*pw); |
| 1335 | Py_DECREF(coerced); |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1336 | return 0; |
| 1337 | } |
| 1338 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1339 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1340 | #define UNARY(funcname, methodname) \ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1341 | static PyObject *funcname(self) PyInstanceObject *self; { \ |
| 1342 | static PyObject *o; \ |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1343 | if (o == NULL) o = PyString_InternFromString(methodname); \ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1344 | return generic_unary_op(self, o); \ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1345 | } |
| 1346 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1347 | UNARY(instance_neg, "__neg__") |
| 1348 | UNARY(instance_pos, "__pos__") |
| 1349 | UNARY(instance_abs, "__abs__") |
| 1350 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1351 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1352 | instance_nonzero(self) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1353 | PyInstanceObject *self; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1354 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1355 | PyObject *func, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1356 | long outcome; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1357 | static PyObject *nonzerostr; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1358 | |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1359 | if (nonzerostr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1360 | nonzerostr = PyString_InternFromString("__nonzero__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1361 | if ((func = instance_getattr(self, nonzerostr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1362 | PyErr_Clear(); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1363 | if (lenstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1364 | lenstr = PyString_InternFromString("__len__"); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1365 | if ((func = instance_getattr(self, lenstr)) == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1366 | PyErr_Clear(); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1367 | /* Fall back to the default behavior: |
| 1368 | all instances are nonzero */ |
| 1369 | return 1; |
| 1370 | } |
| 1371 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1372 | res = PyEval_CallObject(func, (PyObject *)NULL); |
| 1373 | Py_DECREF(func); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1374 | if (res == NULL) |
| 1375 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1376 | if (!PyInt_Check(res)) { |
| 1377 | Py_DECREF(res); |
| 1378 | PyErr_SetString(PyExc_TypeError, |
| 1379 | "__nonzero__ should return an int"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1380 | return -1; |
| 1381 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1382 | outcome = PyInt_AsLong(res); |
| 1383 | Py_DECREF(res); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1384 | if (outcome < 0) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1385 | PyErr_SetString(PyExc_ValueError, |
| 1386 | "__nonzero__ should return >= 0"); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1387 | return -1; |
| 1388 | } |
| 1389 | return outcome > 0; |
| 1390 | } |
| 1391 | |
| 1392 | UNARY(instance_invert, "__invert__") |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 1393 | UNARY(instance_int, "__int__") |
| 1394 | UNARY(instance_long, "__long__") |
| 1395 | UNARY(instance_float, "__float__") |
| 1396 | UNARY(instance_oct, "__oct__") |
| 1397 | UNARY(instance_hex, "__hex__") |
| 1398 | |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1399 | /* This version is for ternary calls only (z != None) */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1400 | static PyObject * |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1401 | instance_pow(v, w, z) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1402 | PyObject *v; |
| 1403 | PyObject *w; |
| 1404 | PyObject *z; |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1405 | { |
| 1406 | /* XXX Doesn't do coercions... */ |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1407 | PyObject *func; |
| 1408 | PyObject *args; |
| 1409 | PyObject *result; |
| 1410 | static PyObject *powstr; |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1411 | |
| 1412 | if (powstr == NULL) |
Guido van Rossum | a412d24 | 1997-01-18 07:59:12 +0000 | [diff] [blame] | 1413 | powstr = PyString_InternFromString("__pow__"); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1414 | func = PyObject_GetAttr(v, powstr); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1415 | if (func == NULL) |
| 1416 | return NULL; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1417 | args = Py_BuildValue("(OO)", w, z); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1418 | if (args == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1419 | Py_DECREF(func); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1420 | return NULL; |
| 1421 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1422 | result = PyEval_CallObject(func, args); |
| 1423 | Py_DECREF(func); |
| 1424 | Py_DECREF(args); |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1425 | return result; |
| 1426 | } |
| 1427 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1428 | static PyNumberMethods instance_as_number = { |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1429 | 0, /*nb_add*/ |
| 1430 | 0, /*nb_subtract*/ |
| 1431 | 0, /*nb_multiply*/ |
| 1432 | 0, /*nb_divide*/ |
| 1433 | 0, /*nb_remainder*/ |
| 1434 | 0, /*nb_divmod*/ |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame] | 1435 | (ternaryfunc)instance_pow, /*nb_power*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1436 | (unaryfunc)instance_neg, /*nb_negative*/ |
| 1437 | (unaryfunc)instance_pos, /*nb_positive*/ |
| 1438 | (unaryfunc)instance_abs, /*nb_absolute*/ |
| 1439 | (inquiry)instance_nonzero, /*nb_nonzero*/ |
| 1440 | (unaryfunc)instance_invert, /*nb_invert*/ |
Guido van Rossum | 03093a2 | 1994-09-28 15:51:32 +0000 | [diff] [blame] | 1441 | 0, /*nb_lshift*/ |
| 1442 | 0, /*nb_rshift*/ |
| 1443 | 0, /*nb_and*/ |
| 1444 | 0, /*nb_xor*/ |
| 1445 | 0, /*nb_or*/ |
Guido van Rossum | 879c581 | 1995-01-10 15:24:06 +0000 | [diff] [blame] | 1446 | (coercion)instance_coerce, /*nb_coerce*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1447 | (unaryfunc)instance_int, /*nb_int*/ |
| 1448 | (unaryfunc)instance_long, /*nb_long*/ |
| 1449 | (unaryfunc)instance_float, /*nb_float*/ |
| 1450 | (unaryfunc)instance_oct, /*nb_oct*/ |
| 1451 | (unaryfunc)instance_hex, /*nb_hex*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1452 | }; |
| 1453 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1454 | PyTypeObject PyInstance_Type = { |
| 1455 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1456 | 0, |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1457 | "instance", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1458 | sizeof(PyInstanceObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1459 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1460 | (destructor)instance_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 1461 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1462 | 0, /*tp_getattr*/ |
| 1463 | 0, /*tp_setattr*/ |
| 1464 | instance_compare, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1465 | (reprfunc)instance_repr, /*tp_repr*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1466 | &instance_as_number, /*tp_as_number*/ |
| 1467 | &instance_as_sequence, /*tp_as_sequence*/ |
| 1468 | &instance_as_mapping, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1469 | (hashfunc)instance_hash, /*tp_hash*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1470 | 0, /*tp_call*/ |
| 1471 | 0, /*tp_str*/ |
| 1472 | (getattrofunc)instance_getattr, /*tp_getattro*/ |
| 1473 | (setattrofunc)instance_setattr, /*tp_setattro*/ |
Guido van Rossum | ee28c3a | 2000-02-28 15:03:15 +0000 | [diff] [blame] | 1474 | 0, /* tp_as_buffer */ |
| 1475 | Py_TPFLAGS_DEFAULT, /*tp_flags */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1476 | }; |
| 1477 | |
| 1478 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1479 | /* Instance method objects are used for two purposes: |
| 1480 | (a) as bound instance methods (returned by instancename.methodname) |
| 1481 | (b) as unbound methods (returned by ClassName.methodname) |
| 1482 | In case (b), im_self is NULL |
| 1483 | */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1484 | |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1485 | static PyMethodObject *free_list; |
| 1486 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1487 | PyObject * |
| 1488 | PyMethod_New(func, self, class) |
| 1489 | PyObject *func; |
| 1490 | PyObject *self; |
| 1491 | PyObject *class; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1492 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1493 | register PyMethodObject *im; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1494 | if (!PyCallable_Check(func)) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1495 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1496 | return NULL; |
| 1497 | } |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1498 | im = free_list; |
| 1499 | if (im != NULL) { |
| 1500 | free_list = (PyMethodObject *)(im->im_self); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1501 | PyObject_INIT(im, &PyMethod_Type); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1502 | } |
| 1503 | else { |
| 1504 | im = PyObject_NEW(PyMethodObject, &PyMethod_Type); |
| 1505 | if (im == NULL) |
| 1506 | return NULL; |
| 1507 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1508 | Py_INCREF(func); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1509 | im->im_func = func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1510 | Py_XINCREF(self); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1511 | im->im_self = self; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1512 | Py_INCREF(class); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1513 | im->im_class = class; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1514 | return (PyObject *)im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1515 | } |
| 1516 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1517 | PyObject * |
| 1518 | PyMethod_Function(im) |
| 1519 | register PyObject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1520 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1521 | if (!PyMethod_Check(im)) { |
| 1522 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1523 | return NULL; |
| 1524 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1525 | return ((PyMethodObject *)im)->im_func; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1526 | } |
| 1527 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1528 | PyObject * |
| 1529 | PyMethod_Self(im) |
| 1530 | register PyObject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1531 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1532 | if (!PyMethod_Check(im)) { |
| 1533 | PyErr_BadInternalCall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1534 | return NULL; |
| 1535 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1536 | return ((PyMethodObject *)im)->im_self; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1537 | } |
| 1538 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1539 | PyObject * |
| 1540 | PyMethod_Class(im) |
| 1541 | register PyObject *im; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1542 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1543 | if (!PyMethod_Check(im)) { |
| 1544 | PyErr_BadInternalCall(); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1545 | return NULL; |
| 1546 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1547 | return ((PyMethodObject *)im)->im_class; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1548 | } |
| 1549 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1550 | /* Class method methods */ |
| 1551 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1552 | #define OFF(x) offsetof(PyMethodObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1553 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1554 | static struct memberlist instancemethod_memberlist[] = { |
| 1555 | {"im_func", T_OBJECT, OFF(im_func)}, |
| 1556 | {"im_self", T_OBJECT, OFF(im_self)}, |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1557 | {"im_class", T_OBJECT, OFF(im_class)}, |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1558 | /* Dummies that are not handled by getattr() except for __members__ */ |
| 1559 | {"__doc__", T_INT, 0}, |
| 1560 | {"__name__", T_INT, 0}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1561 | {NULL} /* Sentinel */ |
| 1562 | }; |
| 1563 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1564 | static PyObject * |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1565 | instancemethod_getattr(im, name) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1566 | register PyMethodObject *im; |
| 1567 | PyObject *name; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1568 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1569 | char *sname = PyString_AsString(name); |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1570 | if (sname[0] == '_') { |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1571 | /* Inherit __name__ and __doc__ from the callable object |
| 1572 | implementing the method */ |
| 1573 | if (strcmp(sname, "__name__") == 0 || |
| 1574 | strcmp(sname, "__doc__") == 0) |
| 1575 | return PyObject_GetAttr(im->im_func, name); |
Guido van Rossum | 6dabc98 | 1996-05-14 21:54:20 +0000 | [diff] [blame] | 1576 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1577 | if (PyEval_GetRestricted()) { |
| 1578 | PyErr_SetString(PyExc_RuntimeError, |
| 1579 | "instance-method attributes not accessible in restricted mode"); |
Guido van Rossum | 10393b1 | 1995-01-10 10:39:49 +0000 | [diff] [blame] | 1580 | return NULL; |
| 1581 | } |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1582 | return PyMember_Get((char *)im, instancemethod_memberlist, sname); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1583 | } |
| 1584 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1585 | static void |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1586 | instancemethod_dealloc(im) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1587 | register PyMethodObject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1588 | { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1589 | Py_DECREF(im->im_func); |
| 1590 | Py_XDECREF(im->im_self); |
| 1591 | Py_DECREF(im->im_class); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1592 | im->im_self = (PyObject *)free_list; |
| 1593 | free_list = im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1594 | } |
| 1595 | |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1596 | static int |
| 1597 | instancemethod_compare(a, b) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1598 | PyMethodObject *a, *b; |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1599 | { |
Guido van Rossum | e9df727 | 1995-04-06 14:46:51 +0000 | [diff] [blame] | 1600 | if (a->im_self != b->im_self) |
| 1601 | return (a->im_self < b->im_self) ? -1 : 1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1602 | return PyObject_Compare(a->im_func, b->im_func); |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1603 | } |
| 1604 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1605 | static PyObject * |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1606 | instancemethod_repr(a) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1607 | PyMethodObject *a; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1608 | { |
| 1609 | char buf[240]; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1610 | PyInstanceObject *self = (PyInstanceObject *)(a->im_self); |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1611 | PyObject *func = a->im_func; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1612 | PyClassObject *class = (PyClassObject *)(a->im_class); |
| 1613 | PyObject *fclassname, *iclassname, *funcname; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1614 | char *fcname, *icname, *fname; |
| 1615 | fclassname = class->cl_name; |
Guido van Rossum | 7859f87 | 1998-07-08 14:58:16 +0000 | [diff] [blame] | 1616 | if (PyFunction_Check(func)) { |
| 1617 | funcname = ((PyFunctionObject *)func)->func_name; |
| 1618 | Py_INCREF(funcname); |
| 1619 | } |
| 1620 | else { |
| 1621 | funcname = PyObject_GetAttrString(func,"__name__"); |
| 1622 | if (funcname == NULL) |
| 1623 | PyErr_Clear(); |
| 1624 | } |
| 1625 | if (funcname != NULL && PyString_Check(funcname)) |
| 1626 | fname = PyString_AS_STRING(funcname); |
| 1627 | else |
| 1628 | fname = "?"; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1629 | if (fclassname != NULL && PyString_Check(fclassname)) |
| 1630 | fcname = PyString_AsString(fclassname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1631 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1632 | fcname = "?"; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1633 | if (self == NULL) |
| 1634 | sprintf(buf, "<unbound method %.100s.%.100s>", fcname, fname); |
| 1635 | else { |
| 1636 | iclassname = self->in_class->cl_name; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1637 | if (iclassname != NULL && PyString_Check(iclassname)) |
| 1638 | icname = PyString_AsString(iclassname); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1639 | else |
| 1640 | icname = "?"; |
| 1641 | sprintf(buf, "<method %.60s.%.60s of %.60s instance at %lx>", |
| 1642 | fcname, fname, icname, (long)self); |
| 1643 | } |
Guido van Rossum | 42636dc | 1999-10-11 14:03:12 +0000 | [diff] [blame] | 1644 | Py_XDECREF(funcname); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1645 | return PyString_FromString(buf); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1646 | } |
| 1647 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1648 | static long |
| 1649 | instancemethod_hash(a) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1650 | PyMethodObject *a; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1651 | { |
| 1652 | long x, y; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1653 | if (a->im_self == NULL) |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1654 | x = PyObject_Hash(Py_None); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1655 | else |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1656 | x = PyObject_Hash(a->im_self); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1657 | if (x == -1) |
| 1658 | return -1; |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1659 | y = PyObject_Hash(a->im_func); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1660 | if (y == -1) |
| 1661 | return -1; |
| 1662 | return x ^ y; |
| 1663 | } |
| 1664 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1665 | PyTypeObject PyMethod_Type = { |
| 1666 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1667 | 0, |
Guido van Rossum | 569fce7 | 1991-04-16 08:38:43 +0000 | [diff] [blame] | 1668 | "instance method", |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 1669 | sizeof(PyMethodObject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1670 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1671 | (destructor)instancemethod_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1672 | 0, /*tp_print*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1673 | 0, /*tp_getattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1674 | 0, /*tp_setattr*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1675 | (cmpfunc)instancemethod_compare, /*tp_compare*/ |
| 1676 | (reprfunc)instancemethod_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1677 | 0, /*tp_as_number*/ |
| 1678 | 0, /*tp_as_sequence*/ |
| 1679 | 0, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1680 | (hashfunc)instancemethod_hash, /*tp_hash*/ |
Guido van Rossum | 2878a69 | 1996-08-09 20:53:24 +0000 | [diff] [blame] | 1681 | 0, /*tp_call*/ |
| 1682 | 0, /*tp_str*/ |
| 1683 | (getattrofunc)instancemethod_getattr, /*tp_getattro*/ |
| 1684 | 0, /*tp_setattro*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1685 | }; |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1686 | |
| 1687 | /* Clear out the free list */ |
| 1688 | |
| 1689 | void |
| 1690 | PyMethod_Fini() |
| 1691 | { |
| 1692 | while (free_list) { |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 1693 | PyMethodObject *im = free_list; |
| 1694 | free_list = (PyMethodObject *)(im->im_self); |
| 1695 | PyObject_DEL(im); |
Guido van Rossum | a0d349f | 1997-08-05 02:06:53 +0000 | [diff] [blame] | 1696 | } |
| 1697 | } |