Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum, |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 3 | Amsterdam, The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* Class object implementation */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 28 | #include "modsupport.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 29 | #include "structmember.h" |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 30 | #include "ceval.h" |
| 31 | |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 32 | /* Forward */ |
| 33 | static object *class_lookup PROTO((classobject *, char *, classobject **)); |
| 34 | static object *instance_getattr1 PROTO((instanceobject *, char *)); |
| 35 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 36 | object * |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 37 | newclassobject(bases, dict, name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 38 | object *bases; /* NULL or tuple of classobjects! */ |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 39 | object *dict; |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 40 | object *name; /* String; NULL if unknown */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 41 | { |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 42 | int pos; |
| 43 | object *key, *value; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 44 | classobject *op, *dummy; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 45 | if (bases == NULL) { |
| 46 | bases = newtupleobject(0); |
| 47 | if (bases == NULL) |
Guido van Rossum | e537240 | 1993-03-16 12:15:04 +0000 | [diff] [blame] | 48 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 49 | } |
| 50 | else |
| 51 | INCREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 52 | op = NEWOBJ(classobject, &Classtype); |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 53 | if (op == NULL) { |
| 54 | DECREF(bases); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 55 | return NULL; |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 56 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 57 | op->cl_bases = bases; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 58 | INCREF(dict); |
| 59 | op->cl_dict = dict; |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 60 | XINCREF(name); |
| 61 | op->cl_name = name; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 62 | op->cl_getattr = class_lookup(op, "__getattr__", &dummy); |
| 63 | op->cl_setattr = class_lookup(op, "__setattr__", &dummy); |
| 64 | op->cl_delattr = class_lookup(op, "__delattr__", &dummy); |
| 65 | XINCREF(op->cl_getattr); |
| 66 | XINCREF(op->cl_setattr); |
| 67 | XINCREF(op->cl_delattr); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 68 | pos = 0; |
| 69 | while (mappinggetnext(dict, &pos, &key, &value)) { |
| 70 | if (is_accessobject(value)) |
| 71 | setaccessowner(value, (object *)op); |
| 72 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 73 | return (object *) op; |
| 74 | } |
| 75 | |
| 76 | /* Class methods */ |
| 77 | |
| 78 | static void |
| 79 | class_dealloc(op) |
| 80 | classobject *op; |
| 81 | { |
Guido van Rossum | e2966a6 | 1991-12-10 13:53:23 +0000 | [diff] [blame] | 82 | DECREF(op->cl_bases); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 83 | DECREF(op->cl_dict); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 84 | XDECREF(op->cl_name); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 85 | free((ANY *)op); |
| 86 | } |
| 87 | |
| 88 | static object * |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 89 | class_lookup(cp, name, pclass) |
| 90 | classobject *cp; |
| 91 | char *name; |
| 92 | classobject **pclass; |
| 93 | { |
| 94 | int i, n; |
| 95 | object *value = dictlookup(cp->cl_dict, name); |
| 96 | if (value != NULL) { |
| 97 | *pclass = cp; |
| 98 | return value; |
| 99 | } |
| 100 | n = gettuplesize(cp->cl_bases); |
| 101 | for (i = 0; i < n; i++) { |
| 102 | object *v = class_lookup((classobject *) |
| 103 | gettupleitem(cp->cl_bases, i), name, pclass); |
| 104 | if (v != NULL) |
| 105 | return v; |
| 106 | } |
| 107 | return NULL; |
| 108 | } |
| 109 | |
| 110 | static object * |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 111 | class_getattr(op, name) |
| 112 | register classobject *op; |
| 113 | register char *name; |
| 114 | { |
| 115 | register object *v; |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 116 | classobject *class; |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 117 | if (strcmp(name, "__dict__") == 0) { |
| 118 | INCREF(op->cl_dict); |
| 119 | return op->cl_dict; |
| 120 | } |
| 121 | if (strcmp(name, "__bases__") == 0) { |
| 122 | INCREF(op->cl_bases); |
| 123 | return op->cl_bases; |
| 124 | } |
| 125 | if (strcmp(name, "__name__") == 0) { |
| 126 | if (op->cl_name == NULL) |
| 127 | v = None; |
| 128 | else |
| 129 | v = op->cl_name; |
| 130 | INCREF(v); |
| 131 | return v; |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 132 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 133 | v = class_lookup(op, name, &class); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 134 | if (v == NULL) { |
| 135 | err_setstr(AttributeError, name); |
| 136 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 137 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 138 | if (is_accessobject(v)) { |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 139 | v = getaccessvalue(v, getowner()); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 140 | if (v == NULL) |
| 141 | return NULL; |
| 142 | } |
| 143 | else |
| 144 | INCREF(v); |
| 145 | if (is_funcobject(v)) { |
| 146 | object *w = newinstancemethodobject(v, (object *)NULL, |
| 147 | (object *)class); |
| 148 | DECREF(v); |
| 149 | v = w; |
| 150 | } |
| 151 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 152 | } |
| 153 | |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 154 | static int |
| 155 | class_setattr(op, name, v) |
| 156 | classobject *op; |
| 157 | char *name; |
| 158 | object *v; |
| 159 | { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 160 | object *ac; |
Guido van Rossum | 8dd79cf | 1992-04-05 14:24:32 +0000 | [diff] [blame] | 161 | if (name[0] == '_' && name[1] == '_') { |
| 162 | int n = strlen(name); |
| 163 | if (name[n-1] == '_' && name[n-2] == '_') { |
| 164 | err_setstr(TypeError, "read-only special attribute"); |
| 165 | return -1; |
| 166 | } |
| 167 | } |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 168 | ac = dictlookup(op->cl_dict, name); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 169 | if (ac != NULL && is_accessobject(ac)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 170 | return setaccessvalue(ac, getowner(), v); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 171 | if (v == NULL) { |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 172 | int rv = dictremove(op->cl_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 173 | if (rv < 0) |
| 174 | err_setstr(AttributeError, |
| 175 | "delete non-existing class attribute"); |
| 176 | return rv; |
| 177 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 178 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 179 | return dictinsert(op->cl_dict, name, v); |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 180 | } |
| 181 | |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 182 | static object * |
| 183 | class_repr(op) |
| 184 | classobject *op; |
| 185 | { |
| 186 | char buf[140]; |
| 187 | char *name; |
| 188 | if (op->cl_name == NULL || !is_stringobject(op->cl_name)) |
| 189 | name = "?"; |
| 190 | else |
| 191 | name = getstringvalue(op->cl_name); |
| 192 | sprintf(buf, "<class %.100s at %lx>", name, (long)op); |
| 193 | return newstringobject(buf); |
| 194 | } |
| 195 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 196 | typeobject Classtype = { |
| 197 | OB_HEAD_INIT(&Typetype) |
| 198 | 0, |
| 199 | "class", |
| 200 | sizeof(classobject), |
| 201 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 202 | (destructor)class_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 203 | 0, /*tp_print*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 204 | (getattrfunc)class_getattr, /*tp_getattr*/ |
| 205 | (setattrfunc)class_setattr, /*tp_setattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 206 | 0, /*tp_compare*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 207 | (reprfunc)class_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 208 | 0, /*tp_as_number*/ |
| 209 | 0, /*tp_as_sequence*/ |
| 210 | 0, /*tp_as_mapping*/ |
| 211 | }; |
| 212 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 213 | int |
| 214 | issubclass(class, base) |
| 215 | object *class; |
| 216 | object *base; |
| 217 | { |
| 218 | int i, n; |
| 219 | classobject *cp; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 220 | if (class == base) |
| 221 | return 1; |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 222 | if (class == NULL || !is_classobject(class)) |
| 223 | return 0; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 224 | cp = (classobject *)class; |
| 225 | n = gettuplesize(cp->cl_bases); |
| 226 | for (i = 0; i < n; i++) { |
| 227 | if (issubclass(gettupleitem(cp->cl_bases, i), base)) |
| 228 | return 1; |
| 229 | } |
| 230 | return 0; |
| 231 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 232 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 233 | |
| 234 | /* Instance objects */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 235 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 236 | static int |
| 237 | addaccess(class, inst) |
| 238 | classobject *class; |
| 239 | instanceobject *inst; |
| 240 | { |
| 241 | int i, n, pos, ret; |
| 242 | object *key, *value, *ac; |
| 243 | |
| 244 | n = gettuplesize(class->cl_bases); |
| 245 | for (i = 0; i < n; i++) { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 246 | if (addaccess((classobject *)gettupleitem(class->cl_bases, i), inst) < 0) |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 247 | return -1; |
| 248 | } |
| 249 | |
| 250 | pos = 0; |
| 251 | while (mappinggetnext(class->cl_dict, &pos, &key, &value)) { |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 252 | object *v; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 253 | if (!is_accessobject(value)) |
| 254 | continue; |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 255 | if (hasaccessvalue(value)) |
| 256 | continue; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 257 | ac = dict2lookup(inst->in_dict, key); |
| 258 | if (ac != NULL && is_accessobject(ac)) { |
| 259 | err_setval(ConflictError, key); |
| 260 | return -1; |
| 261 | } |
| 262 | ac = cloneaccessobject(value); |
| 263 | if (ac == NULL) |
| 264 | return -1; |
| 265 | ret = dict2insert(inst->in_dict, key, ac); |
| 266 | DECREF(ac); |
| 267 | if (ret != 0) |
| 268 | return -1; |
| 269 | } |
| 270 | return 0; |
| 271 | } |
| 272 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 273 | object * |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 274 | newinstanceobject(class, arg) |
| 275 | object *class; |
| 276 | object *arg; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 277 | { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 278 | register instanceobject *inst; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 279 | object *v; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 280 | object *init; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 281 | if (!is_classobject(class)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 282 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 283 | return NULL; |
| 284 | } |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 285 | inst = NEWOBJ(instanceobject, &Instancetype); |
| 286 | if (inst == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 287 | return NULL; |
| 288 | INCREF(class); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 289 | inst->in_class = (classobject *)class; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 290 | inst->in_dict = newdictobject(); |
| 291 | if (inst->in_dict == NULL || |
| 292 | addaccess((classobject *)class, inst) != 0) { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 293 | DECREF(inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 294 | return NULL; |
| 295 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 296 | init = instance_getattr1(inst, "__init__"); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 297 | if (init == NULL) { |
| 298 | err_clear(); |
| 299 | if (arg != NULL && !(is_tupleobject(arg) && |
| 300 | gettuplesize(arg) == 0)) { |
| 301 | err_setstr(TypeError, |
| 302 | "this classobject() takes no arguments"); |
| 303 | DECREF(inst); |
| 304 | inst = NULL; |
| 305 | } |
| 306 | } |
| 307 | else { |
| 308 | object *res = call_object(init, arg); |
| 309 | DECREF(init); |
| 310 | if (res == NULL) { |
| 311 | DECREF(inst); |
| 312 | inst = NULL; |
| 313 | } |
| 314 | else { |
| 315 | if (res != None) { |
| 316 | err_setstr(TypeError, |
| 317 | "__init__() should return None"); |
| 318 | DECREF(inst); |
| 319 | inst = NULL; |
| 320 | } |
| 321 | DECREF(res); |
| 322 | } |
| 323 | } |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 324 | return (object *)inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 325 | } |
| 326 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 327 | /* Instance methods */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 328 | |
| 329 | static void |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 330 | instance_dealloc(inst) |
| 331 | register instanceobject *inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 332 | { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 333 | object *error_type, *error_value; |
| 334 | object *del; |
| 335 | /* Call the __del__ method if it exists. First temporarily |
| 336 | revive the object and save the current exception, if any. */ |
| 337 | INCREF(inst); |
| 338 | err_get(&error_type, &error_value); |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 339 | if ((del = instance_getattr1(inst, "__del__")) != NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 340 | object *args = newtupleobject(0); |
| 341 | object *res = args; |
| 342 | if (res != NULL) |
| 343 | res = call_object(del, args); |
| 344 | XDECREF(args); |
| 345 | DECREF(del); |
| 346 | XDECREF(res); |
| 347 | /* XXX If __del__ raised an exception, it is ignored! */ |
| 348 | } |
| 349 | /* Restore the saved exception and undo the temporary revival */ |
| 350 | err_setval(error_type, error_value); |
| 351 | /* Can't use DECREF here, it would cause a recursive call */ |
| 352 | if (--inst->ob_refcnt > 0) |
| 353 | return; /* __del__ added a reference; don't delete now */ |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 354 | DECREF(inst->in_class); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 355 | XDECREF(inst->in_dict); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 356 | free((ANY *)inst); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 357 | } |
| 358 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 359 | static object * |
| 360 | instance_getattr1(inst, name) |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 361 | register instanceobject *inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 362 | register char *name; |
| 363 | { |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 364 | register object *v; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 365 | classobject *class; |
Sjoerd Mullender | 3bb8a05 | 1993-10-22 12:04:32 +0000 | [diff] [blame] | 366 | if (name[0] == '_' && name[1] == '_') { |
| 367 | if (strcmp(name, "__dict__") == 0) { |
| 368 | INCREF(inst->in_dict); |
| 369 | return inst->in_dict; |
| 370 | } |
| 371 | if (strcmp(name, "__class__") == 0) { |
| 372 | INCREF(inst->in_class); |
| 373 | return (object *)inst->in_class; |
| 374 | } |
Guido van Rossum | 9430839 | 1991-10-20 20:11:48 +0000 | [diff] [blame] | 375 | } |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 376 | class = NULL; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 377 | v = dictlookup(inst->in_dict, name); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 378 | if (v == NULL) { |
| 379 | v = class_lookup(inst->in_class, name, &class); |
| 380 | if (v == NULL) { |
| 381 | err_setstr(AttributeError, name); |
| 382 | return NULL; |
| 383 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 384 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 385 | if (is_accessobject(v)) { |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 386 | v = getaccessvalue(v, getowner()); |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 387 | if (v == NULL) |
| 388 | return NULL; |
| 389 | } |
| 390 | else |
| 391 | INCREF(v); |
Guido van Rossum | 21d335e | 1993-10-15 13:01:11 +0000 | [diff] [blame] | 392 | if (class != NULL) { |
| 393 | if (is_funcobject(v)) { |
| 394 | object *w = newinstancemethodobject(v, (object *)inst, |
| 395 | (object *)class); |
| 396 | DECREF(v); |
| 397 | v = w; |
| 398 | } |
| 399 | else if (is_instancemethodobject(v)) { |
| 400 | object *im_class = instancemethodgetclass(v); |
| 401 | /* Only if classes are compatible */ |
| 402 | if (issubclass((object *)class, im_class)) { |
| 403 | object *im_func = instancemethodgetfunc(v); |
| 404 | object *w = newinstancemethodobject(im_func, |
| 405 | (object *)inst, im_class); |
| 406 | DECREF(v); |
| 407 | v = w; |
| 408 | } |
| 409 | } |
Guido van Rossum | b3f7258 | 1993-05-21 19:56:10 +0000 | [diff] [blame] | 410 | } |
| 411 | return v; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 412 | } |
| 413 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 414 | static object * |
| 415 | instance_getattr(inst, name) |
| 416 | register instanceobject *inst; |
| 417 | register char *name; |
| 418 | { |
| 419 | register object *func, *res; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 420 | res = instance_getattr1(inst, name); |
| 421 | if (res == NULL && (func = inst->in_class->cl_getattr) != NULL) { |
| 422 | object *args; |
| 423 | #if 0 |
| 424 | if (name[0] == '_' && name[1] == '_') { |
| 425 | int n = strlen(name); |
| 426 | if (name[n-1] == '_' && name[n-2] == '_') { |
| 427 | /* Don't mess with system attributes */ |
| 428 | return NULL; |
| 429 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 430 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 431 | #endif |
| 432 | args = mkvalue("(Os)", inst, name); |
| 433 | if (args == NULL) |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 434 | return NULL; |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 435 | res = call_object(func, args); |
| 436 | DECREF(args); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 437 | } |
| 438 | return res; |
| 439 | } |
| 440 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 441 | static int |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 442 | instance_setattr1(inst, name, v) |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 443 | instanceobject *inst; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 444 | char *name; |
| 445 | object *v; |
| 446 | { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 447 | object *ac; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 448 | ac = dictlookup(inst->in_dict, name); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 449 | if (ac != NULL && is_accessobject(ac)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 450 | return setaccessvalue(ac, getowner(), v); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 451 | if (v == NULL) { |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 452 | int rv = dictremove(inst->in_dict, name); |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 453 | if (rv < 0) |
| 454 | err_setstr(AttributeError, |
| 455 | "delete non-existing instance attribute"); |
| 456 | return rv; |
| 457 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 458 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 459 | return dictinsert(inst->in_dict, name, v); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 460 | } |
| 461 | |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 462 | static int |
| 463 | instance_setattr(inst, name, v) |
| 464 | instanceobject *inst; |
| 465 | char *name; |
| 466 | object *v; |
| 467 | { |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 468 | object *func, *args, *res; |
| 469 | if (name[0] == '_' && name[1] == '_') { |
| 470 | int n = strlen(name); |
| 471 | if (name[n-1] == '_' && name[n-2] == '_') { |
| 472 | err_setstr(TypeError, "read-only special attribute"); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 473 | return -1; |
| 474 | } |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 475 | } |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 476 | if (v == NULL) |
| 477 | func = inst->in_class->cl_delattr; |
| 478 | else |
| 479 | func = inst->in_class->cl_setattr; |
| 480 | if (func == NULL) |
| 481 | return instance_setattr1(inst, name, v); |
| 482 | if (v == NULL) |
| 483 | args = mkvalue("(Os)", inst, name); |
| 484 | else |
| 485 | args = mkvalue("(OsO)", inst, name, v); |
| 486 | if (args == NULL) |
| 487 | return -1; |
| 488 | res = call_object(func, args); |
| 489 | DECREF(args); |
| 490 | if (res == NULL) |
| 491 | return -1; |
| 492 | DECREF(res); |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 493 | return 0; |
| 494 | } |
| 495 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 496 | static object * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 497 | instance_repr(inst) |
| 498 | instanceobject *inst; |
| 499 | { |
| 500 | object *func; |
| 501 | object *res; |
| 502 | |
| 503 | func = instance_getattr(inst, "__repr__"); |
| 504 | if (func == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 505 | char buf[140]; |
| 506 | object *classname = inst->in_class->cl_name; |
| 507 | char *cname; |
| 508 | if (classname != NULL && is_stringobject(classname)) |
| 509 | cname = getstringvalue(classname); |
| 510 | else |
| 511 | cname = "?"; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 512 | err_clear(); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 513 | sprintf(buf, "<%.100s instance at %lx>", cname, (long)inst); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 514 | return newstringobject(buf); |
| 515 | } |
| 516 | res = call_object(func, (object *)NULL); |
| 517 | DECREF(func); |
| 518 | return res; |
| 519 | } |
| 520 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 521 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 522 | instance_compare(inst, other) |
| 523 | instanceobject *inst, *other; |
| 524 | { |
| 525 | object *func; |
| 526 | object *res; |
| 527 | int outcome; |
| 528 | |
| 529 | func = instance_getattr(inst, "__cmp__"); |
| 530 | if (func == NULL) { |
| 531 | err_clear(); |
| 532 | if (inst < other) |
| 533 | return -1; |
| 534 | if (inst > other) |
| 535 | return 1; |
| 536 | return 0; |
| 537 | } |
| 538 | res = call_object(func, (object *)other); |
| 539 | DECREF(func); |
| 540 | if (res == NULL) { |
| 541 | err_clear(); /* XXX Should report the error, bot how...??? */ |
| 542 | return 0; |
| 543 | } |
| 544 | if (is_intobject(res)) |
| 545 | outcome = getintvalue(res); |
| 546 | else |
| 547 | outcome = 0; /* XXX Should report the error, bot how...??? */ |
| 548 | DECREF(res); |
| 549 | return outcome; |
| 550 | } |
| 551 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 552 | static long |
| 553 | instance_hash(inst) |
| 554 | instanceobject *inst; |
| 555 | { |
| 556 | object *func; |
| 557 | object *res; |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 558 | long outcome; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 559 | |
| 560 | func = instance_getattr(inst, "__hash__"); |
| 561 | if (func == NULL) { |
| 562 | /* If there is no __cmp__ method, we hash on the address. |
| 563 | If a __cmp__ method exists, there must be a __hash__. */ |
| 564 | err_clear(); |
| 565 | func = instance_getattr(inst, "__cmp__"); |
Guido van Rossum | 8a0c345 | 1993-04-08 12:56:19 +0000 | [diff] [blame] | 566 | if (func == NULL) { |
| 567 | err_clear(); |
| 568 | outcome = (long)inst; |
| 569 | if (outcome == -1) |
| 570 | outcome = -2; |
| 571 | return outcome; |
| 572 | } |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 573 | err_setstr(TypeError, "unhashable instance"); |
| 574 | return -1; |
| 575 | } |
| 576 | res = call_object(func, (object *)NULL); |
| 577 | DECREF(func); |
| 578 | if (res == NULL) |
| 579 | return -1; |
| 580 | if (is_intobject(res)) { |
| 581 | outcome = getintvalue(res); |
| 582 | if (outcome == -1) |
| 583 | outcome = -2; |
| 584 | } |
| 585 | else { |
| 586 | err_setstr(TypeError, "__hash__() should return an int"); |
| 587 | outcome = -1; |
| 588 | } |
| 589 | DECREF(res); |
| 590 | return outcome; |
| 591 | } |
| 592 | |
| 593 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 594 | instance_length(inst) |
| 595 | instanceobject *inst; |
| 596 | { |
| 597 | object *func; |
| 598 | object *res; |
| 599 | int outcome; |
| 600 | |
| 601 | func = instance_getattr(inst, "__len__"); |
| 602 | if (func == NULL) |
| 603 | return -1; |
| 604 | res = call_object(func, (object *)NULL); |
| 605 | DECREF(func); |
Guido van Rossum | d014ea6 | 1992-11-26 10:30:26 +0000 | [diff] [blame] | 606 | if (res == NULL) |
| 607 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 608 | if (is_intobject(res)) { |
| 609 | outcome = getintvalue(res); |
| 610 | if (outcome < 0) |
| 611 | err_setstr(ValueError, "__len__() should return >= 0"); |
| 612 | } |
| 613 | else { |
| 614 | err_setstr(TypeError, "__len__() should return an int"); |
| 615 | outcome = -1; |
| 616 | } |
| 617 | DECREF(res); |
| 618 | return outcome; |
| 619 | } |
| 620 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 621 | static object * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 622 | instance_subscript(inst, key) |
| 623 | instanceobject *inst; |
| 624 | object *key; |
| 625 | { |
| 626 | object *func; |
| 627 | object *arg; |
| 628 | object *res; |
| 629 | |
| 630 | func = instance_getattr(inst, "__getitem__"); |
| 631 | if (func == NULL) |
| 632 | return NULL; |
| 633 | arg = mkvalue("(O)", key); |
| 634 | if (arg == NULL) { |
| 635 | DECREF(func); |
| 636 | return NULL; |
| 637 | } |
| 638 | res = call_object(func, arg); |
| 639 | DECREF(func); |
| 640 | DECREF(arg); |
| 641 | return res; |
| 642 | } |
| 643 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 644 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 645 | instance_ass_subscript(inst, key, value) |
| 646 | instanceobject*inst; |
| 647 | object *key; |
| 648 | object *value; |
| 649 | { |
| 650 | object *func; |
| 651 | object *arg; |
| 652 | object *res; |
| 653 | |
| 654 | if (value == NULL) |
| 655 | func = instance_getattr(inst, "__delitem__"); |
| 656 | else |
| 657 | func = instance_getattr(inst, "__setitem__"); |
| 658 | if (func == NULL) |
| 659 | return -1; |
| 660 | if (value == NULL) |
| 661 | arg = mkvalue("(O)", key); |
| 662 | else |
| 663 | arg = mkvalue("(OO)", key, value); |
| 664 | if (arg == NULL) { |
| 665 | DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 666 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 667 | } |
| 668 | res = call_object(func, arg); |
| 669 | DECREF(func); |
| 670 | DECREF(arg); |
| 671 | if (res == NULL) |
| 672 | return -1; |
| 673 | DECREF(res); |
| 674 | return 0; |
| 675 | } |
| 676 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 677 | static mapping_methods instance_as_mapping = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 678 | (inquiry)instance_length, /*mp_length*/ |
| 679 | (binaryfunc)instance_subscript, /*mp_subscript*/ |
| 680 | (objobjargproc)instance_ass_subscript, /*mp_ass_subscript*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 681 | }; |
| 682 | |
| 683 | static object * |
| 684 | instance_concat(inst, other) |
| 685 | instanceobject *inst, *other; |
| 686 | { |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 687 | object *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 688 | |
| 689 | func = instance_getattr(inst, "__add__"); |
| 690 | if (func == NULL) |
| 691 | return NULL; |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 692 | arg = mkvalue("(O)", other); |
| 693 | if (arg == NULL) { |
| 694 | DECREF(func); |
| 695 | return NULL; |
| 696 | } |
| 697 | res = call_object(func, arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 698 | DECREF(func); |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 699 | DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 700 | return res; |
| 701 | } |
| 702 | |
| 703 | static object * |
| 704 | instance_repeat(inst, count) |
| 705 | instanceobject *inst; |
| 706 | int count; |
| 707 | { |
| 708 | object *func, *arg, *res; |
| 709 | |
| 710 | func = instance_getattr(inst, "__mul__"); |
| 711 | if (func == NULL) |
| 712 | return NULL; |
| 713 | arg = newintobject((long)count); |
| 714 | if (arg == NULL) { |
| 715 | DECREF(func); |
| 716 | return NULL; |
| 717 | } |
| 718 | res = call_object(func, arg); |
| 719 | DECREF(func); |
| 720 | DECREF(arg); |
| 721 | return res; |
| 722 | } |
| 723 | |
| 724 | static object * |
| 725 | instance_item(inst, i) |
| 726 | instanceobject *inst; |
| 727 | int i; |
| 728 | { |
| 729 | object *func, *arg, *res; |
| 730 | |
| 731 | func = instance_getattr(inst, "__getitem__"); |
| 732 | if (func == NULL) |
| 733 | return NULL; |
| 734 | arg = newintobject((long)i); |
| 735 | if (arg == NULL) { |
| 736 | DECREF(func); |
| 737 | return NULL; |
| 738 | } |
| 739 | res = call_object(func, arg); |
| 740 | DECREF(func); |
| 741 | DECREF(arg); |
| 742 | return res; |
| 743 | } |
| 744 | |
| 745 | static object * |
| 746 | instance_slice(inst, i, j) |
| 747 | instanceobject *inst; |
| 748 | int i, j; |
| 749 | { |
| 750 | object *func, *arg, *res; |
| 751 | |
| 752 | func = instance_getattr(inst, "__getslice__"); |
| 753 | if (func == NULL) |
| 754 | return NULL; |
| 755 | arg = mkvalue("(ii)", i, j); |
| 756 | if (arg == NULL) { |
| 757 | DECREF(func); |
| 758 | return NULL; |
| 759 | } |
| 760 | res = call_object(func, arg); |
| 761 | DECREF(func); |
| 762 | DECREF(arg); |
| 763 | return res; |
| 764 | } |
| 765 | |
| 766 | static int |
| 767 | instance_ass_item(inst, i, item) |
| 768 | instanceobject *inst; |
| 769 | int i; |
| 770 | object *item; |
| 771 | { |
| 772 | object *func, *arg, *res; |
| 773 | |
| 774 | if (item == NULL) |
| 775 | func = instance_getattr(inst, "__delitem__"); |
| 776 | else |
| 777 | func = instance_getattr(inst, "__setitem__"); |
| 778 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 779 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 780 | if (item == NULL) |
| 781 | arg = mkvalue("i", i); |
| 782 | else |
| 783 | arg = mkvalue("(iO)", i, item); |
| 784 | if (arg == NULL) { |
| 785 | DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 786 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 787 | } |
| 788 | res = call_object(func, arg); |
| 789 | DECREF(func); |
| 790 | DECREF(arg); |
| 791 | if (res == NULL) |
| 792 | return -1; |
| 793 | DECREF(res); |
| 794 | return 0; |
| 795 | } |
| 796 | |
| 797 | static int |
| 798 | instance_ass_slice(inst, i, j, value) |
| 799 | instanceobject *inst; |
| 800 | int i, j; |
| 801 | object *value; |
| 802 | { |
| 803 | object *func, *arg, *res; |
| 804 | |
| 805 | if (value == NULL) |
| 806 | func = instance_getattr(inst, "__delslice__"); |
| 807 | else |
| 808 | func = instance_getattr(inst, "__setslice__"); |
| 809 | if (func == NULL) |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 810 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 811 | if (value == NULL) |
| 812 | arg = mkvalue("(ii)", i, j); |
| 813 | else |
| 814 | arg = mkvalue("(iiO)", i, j, value); |
| 815 | if (arg == NULL) { |
| 816 | DECREF(func); |
Guido van Rossum | 6d946f9 | 1992-08-14 13:49:30 +0000 | [diff] [blame] | 817 | return -1; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 818 | } |
| 819 | res = call_object(func, arg); |
| 820 | DECREF(func); |
| 821 | DECREF(arg); |
| 822 | if (res == NULL) |
| 823 | return -1; |
| 824 | DECREF(res); |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | static sequence_methods instance_as_sequence = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 829 | (inquiry)instance_length, /*sq_length*/ |
| 830 | (binaryfunc)instance_concat, /*sq_concat*/ |
| 831 | (intargfunc)instance_repeat, /*sq_repeat*/ |
| 832 | (intargfunc)instance_item, /*sq_item*/ |
| 833 | (intintargfunc)instance_slice, /*sq_slice*/ |
| 834 | (intobjargproc)instance_ass_item, /*sq_ass_item*/ |
| 835 | (intintobjargproc)instance_ass_slice, /*sq_ass_slice*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 836 | }; |
| 837 | |
| 838 | static object * |
| 839 | generic_binary_op(self, other, methodname) |
| 840 | instanceobject *self; |
| 841 | object *other; |
| 842 | char *methodname; |
| 843 | { |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 844 | object *func, *arg, *res; |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 845 | |
| 846 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 847 | return NULL; |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 848 | arg = mkvalue("O", other); |
| 849 | if (arg == NULL) { |
| 850 | DECREF(func); |
| 851 | return NULL; |
| 852 | } |
| 853 | res = call_object(func, arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 854 | DECREF(func); |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 855 | DECREF(arg); |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 856 | return res; |
| 857 | } |
| 858 | |
| 859 | static object * |
| 860 | generic_unary_op(self, methodname) |
| 861 | instanceobject *self; |
| 862 | char *methodname; |
| 863 | { |
| 864 | object *func, *res; |
| 865 | |
| 866 | if ((func = instance_getattr(self, methodname)) == NULL) |
| 867 | return NULL; |
| 868 | res = call_object(func, (object *)NULL); |
| 869 | DECREF(func); |
| 870 | return res; |
| 871 | } |
| 872 | |
| 873 | #define BINARY(funcname, methodname) \ |
| 874 | static object * funcname(self, other) instanceobject *self; object *other; { \ |
| 875 | return generic_binary_op(self, other, methodname); \ |
| 876 | } |
| 877 | |
| 878 | #define UNARY(funcname, methodname) \ |
| 879 | static object *funcname(self) instanceobject *self; { \ |
| 880 | return generic_unary_op(self, methodname); \ |
| 881 | } |
| 882 | |
| 883 | BINARY(instance_add, "__add__") |
| 884 | BINARY(instance_sub, "__sub__") |
| 885 | BINARY(instance_mul, "__mul__") |
| 886 | BINARY(instance_div, "__div__") |
| 887 | BINARY(instance_mod, "__mod__") |
| 888 | BINARY(instance_divmod, "__divmod__") |
Guido van Rossum | e773754 | 1994-09-05 07:31:41 +0000 | [diff] [blame] | 889 | BINARY(instance_pow, "__pow__") |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 890 | UNARY(instance_neg, "__neg__") |
| 891 | UNARY(instance_pos, "__pos__") |
| 892 | UNARY(instance_abs, "__abs__") |
| 893 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 894 | static int |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 895 | instance_nonzero(self) |
| 896 | instanceobject *self; |
| 897 | { |
| 898 | object *func, *res; |
| 899 | long outcome; |
| 900 | |
Guido van Rossum | 9e51f9b | 1993-02-12 16:29:05 +0000 | [diff] [blame] | 901 | if ((func = instance_getattr(self, "__nonzero__")) == NULL) { |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 902 | err_clear(); |
Guido van Rossum | 9e51f9b | 1993-02-12 16:29:05 +0000 | [diff] [blame] | 903 | if ((func = instance_getattr(self, "__len__")) == NULL) { |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 904 | err_clear(); |
| 905 | /* Fall back to the default behavior: |
| 906 | all instances are nonzero */ |
| 907 | return 1; |
| 908 | } |
| 909 | } |
| 910 | res = call_object(func, (object *)NULL); |
| 911 | DECREF(func); |
| 912 | if (res == NULL) |
| 913 | return -1; |
| 914 | if (!is_intobject(res)) { |
| 915 | DECREF(res); |
| 916 | err_setstr(TypeError, "__nonzero__ should return an int"); |
| 917 | return -1; |
| 918 | } |
| 919 | outcome = getintvalue(res); |
| 920 | DECREF(res); |
| 921 | if (outcome < 0) { |
| 922 | err_setstr(ValueError, "__nonzero__ should return >= 0"); |
| 923 | return -1; |
| 924 | } |
| 925 | return outcome > 0; |
| 926 | } |
| 927 | |
| 928 | UNARY(instance_invert, "__invert__") |
| 929 | BINARY(instance_lshift, "__lshift__") |
| 930 | BINARY(instance_rshift, "__rshift__") |
| 931 | BINARY(instance_and, "__and__") |
| 932 | BINARY(instance_xor, "__xor__") |
| 933 | BINARY(instance_or, "__or__") |
| 934 | |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 935 | static int |
| 936 | instance_coerce(pv, pw) |
| 937 | object **pv, **pw; |
| 938 | { |
| 939 | object *v = *pv; |
| 940 | object *w = *pw; |
| 941 | object *func; |
| 942 | object *res; |
| 943 | int outcome; |
| 944 | |
| 945 | if (!is_instanceobject(v)) |
| 946 | return 1; /* XXX shouldn't be possible */ |
| 947 | func = instance_getattr((instanceobject *)v, "__coerce__"); |
| 948 | if (func == NULL) { |
| 949 | err_clear(); |
| 950 | return 1; |
| 951 | } |
| 952 | res = call_object(func, w); |
| 953 | if (res == NULL) |
| 954 | return -1; |
| 955 | if (res == None) { |
| 956 | DECREF(res); |
| 957 | return 1; |
| 958 | } |
| 959 | outcome = getargs(res, "(OO)", &v, &w); |
| 960 | if (!outcome || v->ob_type != w->ob_type || |
| 961 | v->ob_type->tp_as_number == NULL) { |
| 962 | DECREF(res); |
| 963 | err_setstr(TypeError, "bad __coerce__ result"); |
| 964 | return -1; |
| 965 | } |
| 966 | INCREF(v); |
| 967 | INCREF(w); |
| 968 | DECREF(res); |
| 969 | *pv = v; |
| 970 | *pw = w; |
| 971 | return 0; |
| 972 | } |
| 973 | |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 974 | UNARY(instance_int, "__int__") |
| 975 | UNARY(instance_long, "__long__") |
| 976 | UNARY(instance_float, "__float__") |
| 977 | UNARY(instance_oct, "__oct__") |
| 978 | UNARY(instance_hex, "__hex__") |
| 979 | |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 980 | static number_methods instance_as_number = { |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 981 | (binaryfunc)instance_add, /*nb_add*/ |
| 982 | (binaryfunc)instance_sub, /*nb_subtract*/ |
| 983 | (binaryfunc)instance_mul, /*nb_multiply*/ |
| 984 | (binaryfunc)instance_div, /*nb_divide*/ |
| 985 | (binaryfunc)instance_mod, /*nb_remainder*/ |
| 986 | (binaryfunc)instance_divmod, /*nb_divmod*/ |
Guido van Rossum | 52ca98a | 1994-09-05 07:32:29 +0000 | [diff] [blame^] | 987 | (ternaryfunc)instance_pow, /*nb_power*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 988 | (unaryfunc)instance_neg, /*nb_negative*/ |
| 989 | (unaryfunc)instance_pos, /*nb_positive*/ |
| 990 | (unaryfunc)instance_abs, /*nb_absolute*/ |
| 991 | (inquiry)instance_nonzero, /*nb_nonzero*/ |
| 992 | (unaryfunc)instance_invert, /*nb_invert*/ |
| 993 | (binaryfunc)instance_lshift, /*nb_lshift*/ |
| 994 | (binaryfunc)instance_rshift, /*nb_rshift*/ |
| 995 | (binaryfunc)instance_and, /*nb_and*/ |
| 996 | (binaryfunc)instance_xor, /*nb_xor*/ |
| 997 | (binaryfunc)instance_or, /*nb_or*/ |
| 998 | (coercion)instance_coerce, /*nb_coerce*/ |
| 999 | (unaryfunc)instance_int, /*nb_int*/ |
| 1000 | (unaryfunc)instance_long, /*nb_long*/ |
| 1001 | (unaryfunc)instance_float, /*nb_float*/ |
| 1002 | (unaryfunc)instance_oct, /*nb_oct*/ |
| 1003 | (unaryfunc)instance_hex, /*nb_hex*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1004 | }; |
| 1005 | |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1006 | typeobject Instancetype = { |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1007 | OB_HEAD_INIT(&Typetype) |
| 1008 | 0, |
Guido van Rossum | 21ed88c | 1991-04-04 10:42:10 +0000 | [diff] [blame] | 1009 | "instance", |
| 1010 | sizeof(instanceobject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1011 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1012 | (destructor)instance_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 1013 | 0, /*tp_print*/ |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1014 | (object * (*) FPROTO((object *, char *))) |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1015 | (getattrfunc)instance_getattr, /*tp_getattr*/ |
| 1016 | (setattrfunc)instance_setattr, /*tp_setattr*/ |
| 1017 | (cmpfunc)instance_compare, /*tp_compare*/ |
| 1018 | (reprfunc)instance_repr, /*tp_repr*/ |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 1019 | &instance_as_number, /*tp_as_number*/ |
| 1020 | &instance_as_sequence, /*tp_as_sequence*/ |
| 1021 | &instance_as_mapping, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1022 | (hashfunc)instance_hash, /*tp_hash*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1023 | }; |
| 1024 | |
| 1025 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1026 | /* Instance method objects are used for two purposes: |
| 1027 | (a) as bound instance methods (returned by instancename.methodname) |
| 1028 | (b) as unbound methods (returned by ClassName.methodname) |
| 1029 | In case (b), im_self is NULL |
| 1030 | */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1031 | |
| 1032 | typedef struct { |
| 1033 | OB_HEAD |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1034 | object *im_func; /* The function implementing the method */ |
| 1035 | object *im_self; /* The instance it is bound to, or NULL */ |
| 1036 | object *im_class; /* The class that defined the method */ |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1037 | } instancemethodobject; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1038 | |
| 1039 | object * |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1040 | newinstancemethodobject(func, self, class) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1041 | object *func; |
| 1042 | object *self; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1043 | object *class; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1044 | { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1045 | register instancemethodobject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1046 | if (!is_funcobject(func)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 1047 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1048 | return NULL; |
| 1049 | } |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1050 | im = NEWOBJ(instancemethodobject, &Instancemethodtype); |
| 1051 | if (im == NULL) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1052 | return NULL; |
| 1053 | INCREF(func); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1054 | im->im_func = func; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1055 | XINCREF(self); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1056 | im->im_self = self; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1057 | INCREF(class); |
| 1058 | im->im_class = class; |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1059 | return (object *)im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1060 | } |
| 1061 | |
| 1062 | object * |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1063 | instancemethodgetfunc(im) |
| 1064 | register object *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1065 | { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1066 | if (!is_instancemethodobject(im)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 1067 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1068 | return NULL; |
| 1069 | } |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1070 | return ((instancemethodobject *)im)->im_func; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | object * |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1074 | instancemethodgetself(im) |
| 1075 | register object *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1076 | { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1077 | if (!is_instancemethodobject(im)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 1078 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1079 | return NULL; |
| 1080 | } |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1081 | return ((instancemethodobject *)im)->im_self; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1082 | } |
| 1083 | |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1084 | object * |
| 1085 | instancemethodgetclass(im) |
| 1086 | register object *im; |
| 1087 | { |
| 1088 | if (!is_instancemethodobject(im)) { |
| 1089 | err_badcall(); |
| 1090 | return NULL; |
| 1091 | } |
| 1092 | return ((instancemethodobject *)im)->im_class; |
| 1093 | } |
| 1094 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1095 | /* Class method methods */ |
| 1096 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1097 | #define OFF(x) offsetof(instancemethodobject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1098 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1099 | static struct memberlist instancemethod_memberlist[] = { |
| 1100 | {"im_func", T_OBJECT, OFF(im_func)}, |
| 1101 | {"im_self", T_OBJECT, OFF(im_self)}, |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1102 | {"im_class", T_OBJECT, OFF(im_class)}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1103 | {NULL} /* Sentinel */ |
| 1104 | }; |
| 1105 | |
| 1106 | static object * |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1107 | instancemethod_getattr(im, name) |
| 1108 | register instancemethodobject *im; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1109 | char *name; |
| 1110 | { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1111 | return getmember((char *)im, instancemethod_memberlist, name); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1112 | } |
| 1113 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1114 | static void |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1115 | instancemethod_dealloc(im) |
| 1116 | register instancemethodobject *im; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1117 | { |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1118 | DECREF(im->im_func); |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1119 | XDECREF(im->im_self); |
| 1120 | DECREF(im->im_class); |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1121 | free((ANY *)im); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
Guido van Rossum | ebc8c51 | 1992-09-03 20:39:51 +0000 | [diff] [blame] | 1124 | static int |
| 1125 | instancemethod_compare(a, b) |
| 1126 | instancemethodobject *a, *b; |
| 1127 | { |
| 1128 | int cmp = cmpobject(a->im_self, b->im_self); |
| 1129 | if (cmp == 0) |
| 1130 | cmp = cmpobject(a->im_func, b->im_func); |
| 1131 | return cmp; |
| 1132 | } |
| 1133 | |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1134 | static object * |
| 1135 | instancemethod_repr(a) |
| 1136 | instancemethodobject *a; |
| 1137 | { |
| 1138 | char buf[240]; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1139 | instanceobject *self = (instanceobject *)(a->im_self); |
| 1140 | funcobject *func = (funcobject *)(a->im_func); |
| 1141 | classobject *class = (classobject *)(a->im_class); |
| 1142 | object *fclassname, *iclassname, *funcname; |
| 1143 | char *fcname, *icname, *fname; |
| 1144 | fclassname = class->cl_name; |
| 1145 | funcname = func->func_name; |
| 1146 | if (fclassname != NULL && is_stringobject(fclassname)) |
| 1147 | fcname = getstringvalue(fclassname); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1148 | else |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1149 | fcname = "?"; |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1150 | if (funcname != NULL && is_stringobject(funcname)) |
| 1151 | fname = getstringvalue(funcname); |
| 1152 | else |
| 1153 | fname = "?"; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1154 | if (self == NULL) |
| 1155 | sprintf(buf, "<unbound method %.100s.%.100s>", fcname, fname); |
| 1156 | else { |
| 1157 | iclassname = self->in_class->cl_name; |
| 1158 | if (iclassname != NULL && is_stringobject(iclassname)) |
| 1159 | icname = getstringvalue(iclassname); |
| 1160 | else |
| 1161 | icname = "?"; |
| 1162 | sprintf(buf, "<method %.60s.%.60s of %.60s instance at %lx>", |
| 1163 | fcname, fname, icname, (long)self); |
| 1164 | } |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 1165 | return newstringobject(buf); |
| 1166 | } |
| 1167 | |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1168 | static long |
| 1169 | instancemethod_hash(a) |
| 1170 | instancemethodobject *a; |
| 1171 | { |
| 1172 | long x, y; |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 1173 | if (a->im_self == NULL) |
| 1174 | x = hashobject(None); |
| 1175 | else |
| 1176 | x = hashobject(a->im_self); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1177 | if (x == -1) |
| 1178 | return -1; |
| 1179 | y = hashobject(a->im_func); |
| 1180 | if (y == -1) |
| 1181 | return -1; |
| 1182 | return x ^ y; |
| 1183 | } |
| 1184 | |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1185 | typeobject Instancemethodtype = { |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1186 | OB_HEAD_INIT(&Typetype) |
| 1187 | 0, |
Guido van Rossum | 569fce7 | 1991-04-16 08:38:43 +0000 | [diff] [blame] | 1188 | "instance method", |
Guido van Rossum | e8122f1 | 1991-05-05 20:03:07 +0000 | [diff] [blame] | 1189 | sizeof(instancemethodobject), |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1190 | 0, |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1191 | (destructor)instancemethod_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1192 | 0, /*tp_print*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1193 | (getattrfunc)instancemethod_getattr, /*tp_getattr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1194 | 0, /*tp_setattr*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1195 | (cmpfunc)instancemethod_compare, /*tp_compare*/ |
| 1196 | (reprfunc)instancemethod_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1197 | 0, /*tp_as_number*/ |
| 1198 | 0, /*tp_as_sequence*/ |
| 1199 | 0, /*tp_as_mapping*/ |
Guido van Rossum | b6775db | 1994-08-01 11:34:53 +0000 | [diff] [blame] | 1200 | (hashfunc)instancemethod_hash, /*tp_hash*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1201 | }; |