Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 2 | /* Type object implementation */ |
| 3 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 5 | #include "structmember.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 6 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 7 | static struct memberlist type_members[] = { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 8 | {"__basicsize__", T_INT, offsetof(PyTypeObject,tp_basicsize),READONLY}, |
| 9 | {"__itemsize__", T_INT, offsetof(PyTypeObject, tp_itemsize), READONLY}, |
| 10 | {"__flags__", T_LONG, offsetof(PyTypeObject, tp_flags), READONLY}, |
| 11 | {"__doc__", T_STRING, offsetof(PyTypeObject, tp_doc), READONLY}, |
| 12 | {"__weaklistoffset__", T_LONG, |
| 13 | offsetof(PyTypeObject, tp_weaklistoffset), READONLY}, |
| 14 | {"__base__", T_OBJECT, offsetof(PyTypeObject, tp_base), READONLY}, |
| 15 | {"__dictoffset__", T_LONG, |
| 16 | offsetof(PyTypeObject, tp_dictoffset), READONLY}, |
| 17 | {"__bases__", T_OBJECT, offsetof(PyTypeObject, tp_bases), READONLY}, |
| 18 | {"__mro__", T_OBJECT, offsetof(PyTypeObject, tp_mro), READONLY}, |
| 19 | {0} |
| 20 | }; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 21 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 22 | static PyObject * |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 23 | type_name(PyTypeObject *type, void *context) |
| 24 | { |
| 25 | char *s; |
| 26 | |
| 27 | s = strrchr(type->tp_name, '.'); |
| 28 | if (s == NULL) |
| 29 | s = type->tp_name; |
| 30 | else |
| 31 | s++; |
| 32 | return PyString_FromString(s); |
| 33 | } |
| 34 | |
| 35 | static PyObject * |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 36 | type_module(PyTypeObject *type, void *context) |
Guido van Rossum | 29ca26e | 1995-01-07 11:58:15 +0000 | [diff] [blame] | 37 | { |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 38 | PyObject *mod; |
| 39 | char *s; |
| 40 | |
| 41 | s = strrchr(type->tp_name, '.'); |
| 42 | if (s != NULL) |
| 43 | return PyString_FromStringAndSize(type->tp_name, |
| 44 | (int)(s - type->tp_name)); |
| 45 | if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE)) |
| 46 | return PyString_FromString("__builtin__"); |
| 47 | mod = PyDict_GetItemString(type->tp_defined, "__module__"); |
| 48 | if (mod != NULL && PyString_Check(mod)) { |
| 49 | Py_INCREF(mod); |
| 50 | return mod; |
| 51 | } |
| 52 | PyErr_SetString(PyExc_AttributeError, "__module__"); |
| 53 | return NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 54 | } |
| 55 | |
| 56 | static PyObject * |
| 57 | type_dict(PyTypeObject *type, void *context) |
| 58 | { |
| 59 | if (type->tp_dict == NULL) { |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 60 | Py_INCREF(Py_None); |
| 61 | return Py_None; |
Guido van Rossum | 29ca26e | 1995-01-07 11:58:15 +0000 | [diff] [blame] | 62 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 63 | if (type->tp_flags & Py_TPFLAGS_DYNAMICTYPE) { |
| 64 | Py_INCREF(type->tp_dict); |
| 65 | return type->tp_dict; |
| 66 | } |
| 67 | return PyDictProxy_New(type->tp_dict); |
Guido van Rossum | 29ca26e | 1995-01-07 11:58:15 +0000 | [diff] [blame] | 68 | } |
| 69 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 70 | static PyObject * |
| 71 | type_defined(PyTypeObject *type, void *context) |
| 72 | { |
| 73 | if (type->tp_defined == NULL) { |
| 74 | Py_INCREF(Py_None); |
| 75 | return Py_None; |
| 76 | } |
| 77 | if (type->tp_flags & Py_TPFLAGS_DYNAMICTYPE) { |
| 78 | Py_INCREF(type->tp_defined); |
| 79 | return type->tp_defined; |
| 80 | } |
| 81 | return PyDictProxy_New(type->tp_defined); |
| 82 | } |
| 83 | |
| 84 | static PyObject * |
| 85 | type_dynamic(PyTypeObject *type, void *context) |
| 86 | { |
| 87 | PyObject *res; |
| 88 | |
| 89 | res = (type->tp_flags & Py_TPFLAGS_DYNAMICTYPE) ? Py_True : Py_False; |
| 90 | Py_INCREF(res); |
| 91 | return res; |
| 92 | } |
| 93 | |
| 94 | struct getsetlist type_getsets[] = { |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 95 | {"__name__", (getter)type_name, NULL, NULL}, |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 96 | {"__module__", (getter)type_module, NULL, NULL}, |
| 97 | {"__dict__", (getter)type_dict, NULL, NULL}, |
| 98 | {"__defined__", (getter)type_defined, NULL, NULL}, |
| 99 | {"__dynamic__", (getter)type_dynamic, NULL, NULL}, |
| 100 | {0} |
| 101 | }; |
| 102 | |
Martin v. Löwis | 0163d6d | 2001-06-09 07:34:05 +0000 | [diff] [blame] | 103 | static int |
| 104 | type_compare(PyObject *v, PyObject *w) |
| 105 | { |
| 106 | /* This is called with type objects only. So we |
| 107 | can just compare the addresses. */ |
| 108 | Py_uintptr_t vv = (Py_uintptr_t)v; |
| 109 | Py_uintptr_t ww = (Py_uintptr_t)w; |
| 110 | return (vv < ww) ? -1 : (vv > ww) ? 1 : 0; |
| 111 | } |
| 112 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 113 | static PyObject * |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 114 | type_repr(PyTypeObject *type) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 115 | { |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 116 | PyObject *mod, *name; |
| 117 | char buf[200]; |
| 118 | |
| 119 | mod = type_module(type, NULL); |
| 120 | if (mod == NULL) |
| 121 | PyErr_Clear(); |
| 122 | else if (!PyString_Check(mod)) { |
| 123 | Py_DECREF(mod); |
| 124 | mod = NULL; |
| 125 | } |
| 126 | name = type_name(type, NULL); |
| 127 | if (name == NULL) |
| 128 | return NULL; |
| 129 | if (mod != NULL && strcmp(PyString_AS_STRING(mod), "__builtin__")) |
| 130 | sprintf(buf, "<type '%.80s.%.80s'>", |
| 131 | PyString_AS_STRING(mod), |
| 132 | PyString_AS_STRING(name)); |
| 133 | else |
| 134 | sprintf(buf, "<type '%.80s'>", type->tp_name); |
| 135 | Py_XDECREF(mod); |
| 136 | Py_DECREF(name); |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 137 | return PyString_FromString(buf); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 138 | } |
| 139 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 140 | static PyObject * |
| 141 | type_call(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 142 | { |
| 143 | PyObject *obj; |
| 144 | |
| 145 | if (type->tp_new == NULL) { |
| 146 | PyErr_Format(PyExc_TypeError, |
| 147 | "cannot create '%.100s' instances", |
| 148 | type->tp_name); |
| 149 | return NULL; |
| 150 | } |
| 151 | |
| 152 | obj = type->tp_new(type, args, NULL); |
| 153 | if (obj != NULL) { |
| 154 | type = obj->ob_type; |
| 155 | if (type->tp_init != NULL && |
| 156 | type->tp_init(obj, args, kwds) < 0) { |
| 157 | Py_DECREF(obj); |
| 158 | obj = NULL; |
| 159 | } |
| 160 | } |
| 161 | return obj; |
| 162 | } |
| 163 | |
| 164 | PyObject * |
| 165 | PyType_GenericAlloc(PyTypeObject *type, int nitems) |
| 166 | { |
| 167 | int size; |
| 168 | void *mem; |
| 169 | PyObject *obj; |
| 170 | |
| 171 | /* Inline PyObject_New() so we can zero the memory */ |
| 172 | size = _PyObject_VAR_SIZE(type, nitems); |
| 173 | mem = PyObject_MALLOC(size); |
| 174 | if (mem == NULL) |
| 175 | return PyErr_NoMemory(); |
| 176 | memset(mem, '\0', size); |
| 177 | if (PyType_IS_GC(type)) |
| 178 | obj = PyObject_FROM_GC(mem); |
| 179 | else |
| 180 | obj = (PyObject *)mem; |
| 181 | if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) |
| 182 | Py_INCREF(type); |
| 183 | if (type->tp_itemsize == 0) |
| 184 | PyObject_INIT(obj, type); |
| 185 | else |
| 186 | (void) PyObject_INIT_VAR((PyVarObject *)obj, type, nitems); |
| 187 | if (PyType_IS_GC(type)) |
| 188 | PyObject_GC_Init(obj); |
| 189 | return obj; |
| 190 | } |
| 191 | |
| 192 | PyObject * |
| 193 | PyType_GenericNew(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 194 | { |
| 195 | return type->tp_alloc(type, 0); |
| 196 | } |
| 197 | |
| 198 | /* Helper for subtyping */ |
| 199 | |
| 200 | static void |
| 201 | subtype_dealloc(PyObject *self) |
| 202 | { |
| 203 | int dictoffset = self->ob_type->tp_dictoffset; |
| 204 | PyTypeObject *type, *base; |
| 205 | destructor f; |
| 206 | |
| 207 | /* This exists so we can DECREF self->ob_type */ |
| 208 | |
| 209 | /* Find the nearest base with a different tp_dealloc */ |
| 210 | type = self->ob_type; |
| 211 | base = type->tp_base; |
| 212 | while ((f = base->tp_dealloc) == subtype_dealloc) { |
| 213 | base = base->tp_base; |
| 214 | assert(base); |
| 215 | } |
| 216 | |
| 217 | /* If we added a dict, DECREF it */ |
| 218 | if (dictoffset && !base->tp_dictoffset) { |
| 219 | PyObject **dictptr = (PyObject **) ((char *)self + dictoffset); |
| 220 | PyObject *dict = *dictptr; |
| 221 | if (dict != NULL) { |
| 222 | Py_DECREF(dict); |
| 223 | *dictptr = NULL; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | /* Finalize GC if the base doesn't do GC and we do */ |
| 228 | if (PyType_IS_GC(type) && !PyType_IS_GC(base)) |
| 229 | PyObject_GC_Fini(self); |
| 230 | |
| 231 | /* Call the base tp_dealloc() */ |
| 232 | assert(f); |
| 233 | f(self); |
| 234 | |
| 235 | /* Can't reference self beyond this point */ |
| 236 | if (type->tp_flags & Py_TPFLAGS_HEAPTYPE) { |
| 237 | Py_DECREF(type); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | staticforward void override_slots(PyTypeObject *type, PyObject *dict); |
| 242 | staticforward PyTypeObject *solid_base(PyTypeObject *type); |
| 243 | |
| 244 | typedef struct { |
| 245 | PyTypeObject type; |
| 246 | PyNumberMethods as_number; |
| 247 | PySequenceMethods as_sequence; |
| 248 | PyMappingMethods as_mapping; |
| 249 | PyBufferProcs as_buffer; |
| 250 | PyObject *name, *slots; |
| 251 | struct memberlist members[1]; |
| 252 | } etype; |
| 253 | |
| 254 | /* type test with subclassing support */ |
| 255 | |
| 256 | int |
| 257 | PyType_IsSubtype(PyTypeObject *a, PyTypeObject *b) |
| 258 | { |
| 259 | PyObject *mro; |
| 260 | |
| 261 | mro = a->tp_mro; |
| 262 | if (mro != NULL) { |
| 263 | /* Deal with multiple inheritance without recursion |
| 264 | by walking the MRO tuple */ |
| 265 | int i, n; |
| 266 | assert(PyTuple_Check(mro)); |
| 267 | n = PyTuple_GET_SIZE(mro); |
| 268 | for (i = 0; i < n; i++) { |
| 269 | if (PyTuple_GET_ITEM(mro, i) == (PyObject *)b) |
| 270 | return 1; |
| 271 | } |
| 272 | return 0; |
| 273 | } |
| 274 | else { |
| 275 | /* a is not completely initilized yet; follow tp_base */ |
| 276 | do { |
| 277 | if (a == b) |
| 278 | return 1; |
| 279 | a = a->tp_base; |
| 280 | } while (a != NULL); |
| 281 | return b == &PyBaseObject_Type; |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | /* Method resolution order algorithm from "Putting Metaclasses to Work" |
| 286 | by Forman and Danforth (Addison-Wesley 1999). */ |
| 287 | |
| 288 | static int |
| 289 | conservative_merge(PyObject *left, PyObject *right) |
| 290 | { |
| 291 | int left_size; |
| 292 | int right_size; |
| 293 | int i, j, r, ok; |
| 294 | PyObject *temp, *rr; |
| 295 | |
| 296 | assert(PyList_Check(left)); |
| 297 | assert(PyList_Check(right)); |
| 298 | |
| 299 | again: |
| 300 | left_size = PyList_GET_SIZE(left); |
| 301 | right_size = PyList_GET_SIZE(right); |
| 302 | for (i = 0; i < left_size; i++) { |
| 303 | for (j = 0; j < right_size; j++) { |
| 304 | if (PyList_GET_ITEM(left, i) == |
| 305 | PyList_GET_ITEM(right, j)) { |
| 306 | /* found a merge point */ |
| 307 | temp = PyList_New(0); |
| 308 | if (temp == NULL) |
| 309 | return -1; |
| 310 | for (r = 0; r < j; r++) { |
| 311 | rr = PyList_GET_ITEM(right, r); |
| 312 | ok = PySequence_Contains(left, rr); |
| 313 | if (ok < 0) { |
| 314 | Py_DECREF(temp); |
| 315 | return -1; |
| 316 | } |
| 317 | if (!ok) { |
| 318 | ok = PyList_Append(temp, rr); |
| 319 | if (ok < 0) { |
| 320 | Py_DECREF(temp); |
| 321 | return -1; |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | ok = PyList_SetSlice(left, i, i, temp); |
| 326 | Py_DECREF(temp); |
| 327 | if (ok < 0) |
| 328 | return -1; |
| 329 | ok = PyList_SetSlice(right, 0, j+1, NULL); |
| 330 | if (ok < 0) |
| 331 | return -1; |
| 332 | goto again; |
| 333 | } |
| 334 | } |
| 335 | } |
| 336 | return PyList_SetSlice(left, left_size, left_size, right); |
| 337 | } |
| 338 | |
| 339 | static int |
| 340 | serious_order_disagreements(PyObject *left, PyObject *right) |
| 341 | { |
| 342 | return 0; /* XXX later -- for now, we cheat: "don't do that" */ |
| 343 | } |
| 344 | |
| 345 | static PyObject * |
| 346 | mro_implementation(PyTypeObject *type) |
| 347 | { |
| 348 | int i, n, ok; |
| 349 | PyObject *bases, *result; |
| 350 | |
| 351 | bases = type->tp_bases; |
| 352 | n = PyTuple_GET_SIZE(bases); |
| 353 | result = Py_BuildValue("[O]", (PyObject *)type); |
| 354 | if (result == NULL) |
| 355 | return NULL; |
| 356 | for (i = 0; i < n; i++) { |
| 357 | PyTypeObject *base = |
| 358 | (PyTypeObject *) PyTuple_GET_ITEM(bases, i); |
| 359 | PyObject *parentMRO = PySequence_List(base->tp_mro); |
| 360 | if (parentMRO == NULL) { |
| 361 | Py_DECREF(result); |
| 362 | return NULL; |
| 363 | } |
| 364 | if (serious_order_disagreements(result, parentMRO)) { |
| 365 | Py_DECREF(result); |
| 366 | return NULL; |
| 367 | } |
| 368 | ok = conservative_merge(result, parentMRO); |
| 369 | Py_DECREF(parentMRO); |
| 370 | if (ok < 0) { |
| 371 | Py_DECREF(result); |
| 372 | return NULL; |
| 373 | } |
| 374 | } |
| 375 | return result; |
| 376 | } |
| 377 | |
| 378 | static PyObject * |
Martin v. Löwis | e3eb1f2 | 2001-08-16 13:15:00 +0000 | [diff] [blame] | 379 | mro_external(PyObject *self) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 380 | { |
| 381 | PyTypeObject *type = (PyTypeObject *)self; |
| 382 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 383 | return mro_implementation(type); |
| 384 | } |
| 385 | |
| 386 | static int |
| 387 | mro_internal(PyTypeObject *type) |
| 388 | { |
| 389 | PyObject *mro, *result, *tuple; |
| 390 | |
| 391 | if (type->ob_type == &PyType_Type) { |
| 392 | result = mro_implementation(type); |
| 393 | } |
| 394 | else { |
| 395 | mro = PyObject_GetAttrString((PyObject *)type, "mro"); |
| 396 | if (mro == NULL) |
| 397 | return -1; |
| 398 | result = PyObject_CallObject(mro, NULL); |
| 399 | Py_DECREF(mro); |
| 400 | } |
| 401 | if (result == NULL) |
| 402 | return -1; |
| 403 | tuple = PySequence_Tuple(result); |
| 404 | Py_DECREF(result); |
| 405 | type->tp_mro = tuple; |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | |
| 410 | /* Calculate the best base amongst multiple base classes. |
| 411 | This is the first one that's on the path to the "solid base". */ |
| 412 | |
| 413 | static PyTypeObject * |
| 414 | best_base(PyObject *bases) |
| 415 | { |
| 416 | int i, n; |
| 417 | PyTypeObject *base, *winner, *candidate, *base_i; |
| 418 | |
| 419 | assert(PyTuple_Check(bases)); |
| 420 | n = PyTuple_GET_SIZE(bases); |
| 421 | assert(n > 0); |
| 422 | base = (PyTypeObject *)PyTuple_GET_ITEM(bases, 0); |
| 423 | winner = &PyBaseObject_Type; |
| 424 | for (i = 0; i < n; i++) { |
| 425 | base_i = (PyTypeObject *)PyTuple_GET_ITEM(bases, i); |
| 426 | if (!PyType_Check((PyObject *)base_i)) { |
| 427 | PyErr_SetString( |
| 428 | PyExc_TypeError, |
| 429 | "bases must be types"); |
| 430 | return NULL; |
| 431 | } |
| 432 | if (base_i->tp_dict == NULL) { |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 433 | if (PyType_Ready(base_i) < 0) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 434 | return NULL; |
| 435 | } |
| 436 | candidate = solid_base(base_i); |
| 437 | if (PyType_IsSubtype(winner, candidate)) |
| 438 | ; |
| 439 | else if (PyType_IsSubtype(candidate, winner)) { |
| 440 | winner = candidate; |
| 441 | base = base_i; |
| 442 | } |
| 443 | else { |
| 444 | PyErr_SetString( |
| 445 | PyExc_TypeError, |
| 446 | "multiple bases have " |
| 447 | "instance lay-out conflict"); |
| 448 | return NULL; |
| 449 | } |
| 450 | } |
| 451 | assert(base != NULL); |
| 452 | return base; |
| 453 | } |
| 454 | |
| 455 | static int |
| 456 | extra_ivars(PyTypeObject *type, PyTypeObject *base) |
| 457 | { |
| 458 | int t_size = PyType_BASICSIZE(type); |
| 459 | int b_size = PyType_BASICSIZE(base); |
| 460 | |
| 461 | assert(t_size >= b_size); /* type smaller than base! */ |
| 462 | if (type->tp_itemsize || base->tp_itemsize) { |
| 463 | /* If itemsize is involved, stricter rules */ |
| 464 | return t_size != b_size || |
| 465 | type->tp_itemsize != base->tp_itemsize; |
| 466 | } |
| 467 | if (t_size == b_size) |
| 468 | return 0; |
| 469 | if (type->tp_dictoffset != 0 && base->tp_dictoffset == 0 && |
| 470 | type->tp_dictoffset == b_size && |
| 471 | (size_t)t_size == b_size + sizeof(PyObject *)) |
| 472 | return 0; /* "Forgive" adding a __dict__ only */ |
| 473 | return 1; |
| 474 | } |
| 475 | |
| 476 | static PyTypeObject * |
| 477 | solid_base(PyTypeObject *type) |
| 478 | { |
| 479 | PyTypeObject *base; |
| 480 | |
| 481 | if (type->tp_base) |
| 482 | base = solid_base(type->tp_base); |
| 483 | else |
| 484 | base = &PyBaseObject_Type; |
| 485 | if (extra_ivars(type, base)) |
| 486 | return type; |
| 487 | else |
| 488 | return base; |
| 489 | } |
| 490 | |
| 491 | staticforward void object_dealloc(PyObject *); |
| 492 | staticforward int object_init(PyObject *, PyObject *, PyObject *); |
| 493 | |
| 494 | static PyObject * |
| 495 | type_new(PyTypeObject *metatype, PyObject *args, PyObject *kwds) |
| 496 | { |
| 497 | PyObject *name, *bases, *dict; |
| 498 | static char *kwlist[] = {"name", "bases", "dict", 0}; |
| 499 | PyObject *slots, *tmp; |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 500 | PyTypeObject *type, *base, *tmptype, *winner; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 501 | etype *et; |
| 502 | struct memberlist *mp; |
| 503 | int i, nbases, nslots, slotoffset, dynamic; |
| 504 | |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 505 | /* Special case: type(x) should return x->ob_type */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 506 | if (metatype == &PyType_Type && |
| 507 | PyTuple_Check(args) && PyTuple_GET_SIZE(args) == 1 && |
| 508 | (kwds == NULL || (PyDict_Check(kwds) && PyDict_Size(kwds) == 0))) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 509 | PyObject *x = PyTuple_GET_ITEM(args, 0); |
| 510 | Py_INCREF(x->ob_type); |
| 511 | return (PyObject *) x->ob_type; |
| 512 | } |
| 513 | |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 514 | /* Check arguments: (name, bases, dict) */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 515 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "SO!O!:type", kwlist, |
| 516 | &name, |
| 517 | &PyTuple_Type, &bases, |
| 518 | &PyDict_Type, &dict)) |
| 519 | return NULL; |
| 520 | |
| 521 | /* Determine the proper metatype to deal with this, |
| 522 | and check for metatype conflicts while we're at it. |
| 523 | Note that if some other metatype wins to contract, |
| 524 | it's possible that its instances are not types. */ |
| 525 | nbases = PyTuple_GET_SIZE(bases); |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 526 | winner = metatype; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 527 | for (i = 0; i < nbases; i++) { |
| 528 | tmp = PyTuple_GET_ITEM(bases, i); |
| 529 | tmptype = tmp->ob_type; |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 530 | if (PyType_IsSubtype(winner, tmptype)) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 531 | continue; |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 532 | if (PyType_IsSubtype(tmptype, winner)) { |
| 533 | winner = tmptype; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 534 | continue; |
| 535 | } |
| 536 | PyErr_SetString(PyExc_TypeError, |
| 537 | "metatype conflict among bases"); |
| 538 | return NULL; |
| 539 | } |
Guido van Rossum | 8d32c8b | 2001-08-17 11:18:38 +0000 | [diff] [blame^] | 540 | if (winner != metatype) { |
| 541 | if (winner->tp_new != type_new) /* Pass it to the winner */ |
| 542 | return winner->tp_new(winner, args, kwds); |
| 543 | metatype = winner; |
| 544 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 545 | |
| 546 | /* Adjust for empty tuple bases */ |
| 547 | if (nbases == 0) { |
| 548 | bases = Py_BuildValue("(O)", &PyBaseObject_Type); |
| 549 | if (bases == NULL) |
| 550 | return NULL; |
| 551 | nbases = 1; |
| 552 | } |
| 553 | else |
| 554 | Py_INCREF(bases); |
| 555 | |
| 556 | /* XXX From here until type is allocated, "return NULL" leaks bases! */ |
| 557 | |
| 558 | /* Calculate best base, and check that all bases are type objects */ |
| 559 | base = best_base(bases); |
| 560 | if (base == NULL) |
| 561 | return NULL; |
| 562 | if (!PyType_HasFeature(base, Py_TPFLAGS_BASETYPE)) { |
| 563 | PyErr_Format(PyExc_TypeError, |
| 564 | "type '%.100s' is not an acceptable base type", |
| 565 | base->tp_name); |
| 566 | return NULL; |
| 567 | } |
| 568 | |
| 569 | /* Should this be a dynamic class (i.e. modifiable __dict__)? */ |
| 570 | tmp = PyDict_GetItemString(dict, "__dynamic__"); |
| 571 | if (tmp != NULL) { |
| 572 | /* The class author has a preference */ |
| 573 | dynamic = PyObject_IsTrue(tmp); |
| 574 | Py_DECREF(tmp); |
| 575 | if (dynamic < 0) |
| 576 | return NULL; |
| 577 | } |
| 578 | else { |
| 579 | /* Make a new class dynamic if any of its bases is dynamic. |
| 580 | This is not always the same as inheriting the __dynamic__ |
| 581 | class attribute! */ |
| 582 | dynamic = 0; |
| 583 | for (i = 0; i < nbases; i++) { |
| 584 | tmptype = (PyTypeObject *)PyTuple_GET_ITEM(bases, i); |
| 585 | if (tmptype->tp_flags & Py_TPFLAGS_DYNAMICTYPE) { |
| 586 | dynamic = 1; |
| 587 | break; |
| 588 | } |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | /* Check for a __slots__ sequence variable in dict, and count it */ |
| 593 | slots = PyDict_GetItemString(dict, "__slots__"); |
| 594 | nslots = 0; |
| 595 | if (slots != NULL) { |
| 596 | /* Make it into a tuple */ |
| 597 | if (PyString_Check(slots)) |
| 598 | slots = Py_BuildValue("(O)", slots); |
| 599 | else |
| 600 | slots = PySequence_Tuple(slots); |
| 601 | if (slots == NULL) |
| 602 | return NULL; |
| 603 | nslots = PyTuple_GET_SIZE(slots); |
| 604 | for (i = 0; i < nslots; i++) { |
| 605 | if (!PyString_Check(PyTuple_GET_ITEM(slots, i))) { |
| 606 | PyErr_SetString(PyExc_TypeError, |
| 607 | "__slots__ must be a sequence of strings"); |
| 608 | Py_DECREF(slots); |
| 609 | return NULL; |
| 610 | } |
| 611 | } |
| 612 | } |
| 613 | if (slots == NULL && base->tp_dictoffset == 0 && |
| 614 | (base->tp_setattro == PyObject_GenericSetAttr || |
| 615 | base->tp_setattro == NULL)) |
| 616 | nslots = 1; |
| 617 | |
| 618 | /* XXX From here until type is safely allocated, |
| 619 | "return NULL" may leak slots! */ |
| 620 | |
| 621 | /* Allocate the type object */ |
| 622 | type = (PyTypeObject *)metatype->tp_alloc(metatype, nslots); |
| 623 | if (type == NULL) |
| 624 | return NULL; |
| 625 | |
| 626 | /* Keep name and slots alive in the extended type object */ |
| 627 | et = (etype *)type; |
| 628 | Py_INCREF(name); |
| 629 | et->name = name; |
| 630 | et->slots = slots; |
| 631 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 632 | /* Initialize tp_flags */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 633 | type->tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HEAPTYPE | |
| 634 | Py_TPFLAGS_BASETYPE; |
| 635 | if (dynamic) |
| 636 | type->tp_flags |= Py_TPFLAGS_DYNAMICTYPE; |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 637 | |
| 638 | /* It's a new-style number unless it specifically inherits any |
| 639 | old-style numeric behavior */ |
| 640 | if ((base->tp_flags & Py_TPFLAGS_CHECKTYPES) || |
| 641 | (base->tp_as_number == NULL)) |
| 642 | type->tp_flags |= Py_TPFLAGS_CHECKTYPES; |
| 643 | |
| 644 | /* Initialize essential fields */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 645 | type->tp_as_number = &et->as_number; |
| 646 | type->tp_as_sequence = &et->as_sequence; |
| 647 | type->tp_as_mapping = &et->as_mapping; |
| 648 | type->tp_as_buffer = &et->as_buffer; |
| 649 | type->tp_name = PyString_AS_STRING(name); |
| 650 | |
| 651 | /* Set tp_base and tp_bases */ |
| 652 | type->tp_bases = bases; |
| 653 | Py_INCREF(base); |
| 654 | type->tp_base = base; |
| 655 | |
| 656 | /* Initialize tp_defined from passed-in dict */ |
| 657 | type->tp_defined = dict = PyDict_Copy(dict); |
| 658 | if (dict == NULL) { |
| 659 | Py_DECREF(type); |
| 660 | return NULL; |
| 661 | } |
| 662 | |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 663 | /* Set __module__ in the dict */ |
| 664 | if (PyDict_GetItemString(dict, "__module__") == NULL) { |
| 665 | tmp = PyEval_GetGlobals(); |
| 666 | if (tmp != NULL) { |
| 667 | tmp = PyDict_GetItemString(tmp, "__name__"); |
| 668 | if (tmp != NULL) { |
| 669 | if (PyDict_SetItemString(dict, "__module__", |
| 670 | tmp) < 0) |
| 671 | return NULL; |
| 672 | } |
| 673 | } |
| 674 | } |
| 675 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 676 | /* Special-case __new__: if it's a plain function, |
| 677 | make it a static function */ |
| 678 | tmp = PyDict_GetItemString(dict, "__new__"); |
| 679 | if (tmp != NULL && PyFunction_Check(tmp)) { |
| 680 | tmp = PyStaticMethod_New(tmp); |
| 681 | if (tmp == NULL) { |
| 682 | Py_DECREF(type); |
| 683 | return NULL; |
| 684 | } |
| 685 | PyDict_SetItemString(dict, "__new__", tmp); |
| 686 | Py_DECREF(tmp); |
| 687 | } |
| 688 | |
| 689 | /* Add descriptors for custom slots from __slots__, or for __dict__ */ |
| 690 | mp = et->members; |
| 691 | slotoffset = PyType_BASICSIZE(base); |
| 692 | if (slots != NULL) { |
| 693 | for (i = 0; i < nslots; i++, mp++) { |
| 694 | mp->name = PyString_AS_STRING( |
| 695 | PyTuple_GET_ITEM(slots, i)); |
| 696 | mp->type = T_OBJECT; |
| 697 | mp->offset = slotoffset; |
| 698 | slotoffset += sizeof(PyObject *); |
| 699 | } |
| 700 | } |
| 701 | else if (nslots) { |
| 702 | type->tp_dictoffset = slotoffset; |
| 703 | mp->name = "__dict__"; |
| 704 | mp->type = T_OBJECT; |
| 705 | mp->offset = slotoffset; |
| 706 | mp->readonly = 1; |
| 707 | slotoffset += sizeof(PyObject *); |
| 708 | } |
| 709 | type->tp_basicsize = slotoffset; |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 710 | type->tp_members = et->members; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 711 | |
| 712 | /* Special case some slots */ |
| 713 | if (type->tp_dictoffset != 0 || nslots > 0) { |
| 714 | if (base->tp_getattr == NULL && base->tp_getattro == NULL) |
| 715 | type->tp_getattro = PyObject_GenericGetAttr; |
| 716 | if (base->tp_setattr == NULL && base->tp_setattro == NULL) |
| 717 | type->tp_setattro = PyObject_GenericSetAttr; |
| 718 | } |
| 719 | type->tp_dealloc = subtype_dealloc; |
| 720 | |
| 721 | /* Always override allocation strategy to use regular heap */ |
| 722 | type->tp_alloc = PyType_GenericAlloc; |
| 723 | type->tp_free = _PyObject_Del; |
| 724 | |
| 725 | /* Initialize the rest */ |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 726 | if (PyType_Ready(type) < 0) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 727 | Py_DECREF(type); |
| 728 | return NULL; |
| 729 | } |
| 730 | |
| 731 | /* Override slots that deserve it */ |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 732 | if (!PyType_HasFeature(type, Py_TPFLAGS_DYNAMICTYPE)) |
| 733 | override_slots(type, type->tp_defined); |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 734 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 735 | return (PyObject *)type; |
| 736 | } |
| 737 | |
| 738 | /* Internal API to look for a name through the MRO. |
| 739 | This returns a borrowed reference, and doesn't set an exception! */ |
| 740 | PyObject * |
| 741 | _PyType_Lookup(PyTypeObject *type, PyObject *name) |
| 742 | { |
| 743 | int i, n; |
| 744 | PyObject *mro, *res, *dict; |
| 745 | |
| 746 | /* For static types, look in tp_dict */ |
| 747 | if (!(type->tp_flags & Py_TPFLAGS_DYNAMICTYPE)) { |
| 748 | dict = type->tp_dict; |
| 749 | assert(dict && PyDict_Check(dict)); |
| 750 | return PyDict_GetItem(dict, name); |
| 751 | } |
| 752 | |
| 753 | /* For dynamic types, look in tp_defined of types in MRO */ |
| 754 | mro = type->tp_mro; |
| 755 | assert(PyTuple_Check(mro)); |
| 756 | n = PyTuple_GET_SIZE(mro); |
| 757 | for (i = 0; i < n; i++) { |
| 758 | type = (PyTypeObject *) PyTuple_GET_ITEM(mro, i); |
| 759 | assert(PyType_Check(type)); |
| 760 | dict = type->tp_defined; |
| 761 | assert(dict && PyDict_Check(dict)); |
| 762 | res = PyDict_GetItem(dict, name); |
| 763 | if (res != NULL) |
| 764 | return res; |
| 765 | } |
| 766 | return NULL; |
| 767 | } |
| 768 | |
| 769 | /* This is similar to PyObject_GenericGetAttr(), |
| 770 | but uses _PyType_Lookup() instead of just looking in type->tp_dict. */ |
| 771 | static PyObject * |
| 772 | type_getattro(PyTypeObject *type, PyObject *name) |
| 773 | { |
| 774 | PyTypeObject *metatype = type->ob_type; |
| 775 | PyObject *descr, *res; |
| 776 | descrgetfunc f; |
| 777 | |
| 778 | /* Initialize this type (we'll assume the metatype is initialized) */ |
| 779 | if (type->tp_dict == NULL) { |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 780 | if (PyType_Ready(type) < 0) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 781 | return NULL; |
| 782 | } |
| 783 | |
| 784 | /* Get a descriptor from the metatype */ |
| 785 | descr = _PyType_Lookup(metatype, name); |
| 786 | f = NULL; |
| 787 | if (descr != NULL) { |
| 788 | f = descr->ob_type->tp_descr_get; |
| 789 | if (f != NULL && PyDescr_IsData(descr)) |
| 790 | return f(descr, |
| 791 | (PyObject *)type, (PyObject *)metatype); |
| 792 | } |
| 793 | |
| 794 | /* Look in tp_defined of this type and its bases */ |
| 795 | res = _PyType_Lookup(type, name); |
| 796 | if (res != NULL) { |
| 797 | f = res->ob_type->tp_descr_get; |
| 798 | if (f != NULL) |
| 799 | return f(res, (PyObject *)NULL, (PyObject *)type); |
| 800 | Py_INCREF(res); |
| 801 | return res; |
| 802 | } |
| 803 | |
| 804 | /* Use the descriptor from the metatype */ |
| 805 | if (f != NULL) { |
| 806 | res = f(descr, (PyObject *)type, (PyObject *)metatype); |
| 807 | return res; |
| 808 | } |
| 809 | if (descr != NULL) { |
| 810 | Py_INCREF(descr); |
| 811 | return descr; |
| 812 | } |
| 813 | |
| 814 | /* Give up */ |
| 815 | PyErr_Format(PyExc_AttributeError, |
| 816 | "type object '%.50s' has no attribute '%.400s'", |
| 817 | type->tp_name, PyString_AS_STRING(name)); |
| 818 | return NULL; |
| 819 | } |
| 820 | |
| 821 | static int |
| 822 | type_setattro(PyTypeObject *type, PyObject *name, PyObject *value) |
| 823 | { |
| 824 | if (type->tp_flags & Py_TPFLAGS_DYNAMICTYPE) |
| 825 | return PyObject_GenericSetAttr((PyObject *)type, name, value); |
| 826 | PyErr_SetString(PyExc_TypeError, "can't set type attributes"); |
| 827 | return -1; |
| 828 | } |
| 829 | |
| 830 | static void |
| 831 | type_dealloc(PyTypeObject *type) |
| 832 | { |
| 833 | etype *et; |
| 834 | |
| 835 | /* Assert this is a heap-allocated type object */ |
| 836 | assert(type->tp_flags & Py_TPFLAGS_HEAPTYPE); |
| 837 | et = (etype *)type; |
| 838 | Py_XDECREF(type->tp_base); |
| 839 | Py_XDECREF(type->tp_dict); |
| 840 | Py_XDECREF(type->tp_bases); |
| 841 | Py_XDECREF(type->tp_mro); |
| 842 | Py_XDECREF(type->tp_defined); |
| 843 | /* XXX more? */ |
| 844 | Py_XDECREF(et->name); |
| 845 | Py_XDECREF(et->slots); |
| 846 | type->ob_type->tp_free((PyObject *)type); |
| 847 | } |
| 848 | |
| 849 | static PyMethodDef type_methods[] = { |
Martin v. Löwis | e3eb1f2 | 2001-08-16 13:15:00 +0000 | [diff] [blame] | 850 | {"mro", (PyCFunction)mro_external, METH_NOARGS, |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 851 | "mro() -> list\nreturn a type's method resolution order"}, |
| 852 | {0} |
| 853 | }; |
| 854 | |
| 855 | static char type_doc[] = |
| 856 | "type(object) -> the object's type\n" |
| 857 | "type(name, bases, dict) -> a new type"; |
| 858 | |
Guido van Rossum | c0b618a | 1997-05-02 03:12:38 +0000 | [diff] [blame] | 859 | PyTypeObject PyType_Type = { |
| 860 | PyObject_HEAD_INIT(&PyType_Type) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 861 | 0, /* ob_size */ |
| 862 | "type", /* tp_name */ |
| 863 | sizeof(etype), /* tp_basicsize */ |
| 864 | sizeof(struct memberlist), /* tp_itemsize */ |
| 865 | (destructor)type_dealloc, /* tp_dealloc */ |
| 866 | 0, /* tp_print */ |
| 867 | 0, /* tp_getattr */ |
| 868 | 0, /* tp_setattr */ |
| 869 | type_compare, /* tp_compare */ |
| 870 | (reprfunc)type_repr, /* tp_repr */ |
| 871 | 0, /* tp_as_number */ |
| 872 | 0, /* tp_as_sequence */ |
| 873 | 0, /* tp_as_mapping */ |
| 874 | (hashfunc)_Py_HashPointer, /* tp_hash */ |
| 875 | (ternaryfunc)type_call, /* tp_call */ |
| 876 | 0, /* tp_str */ |
| 877 | (getattrofunc)type_getattro, /* tp_getattro */ |
| 878 | (setattrofunc)type_setattro, /* tp_setattro */ |
| 879 | 0, /* tp_as_buffer */ |
| 880 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| 881 | type_doc, /* tp_doc */ |
| 882 | 0, /* tp_traverse */ |
| 883 | 0, /* tp_clear */ |
| 884 | 0, /* tp_richcompare */ |
| 885 | 0, /* tp_weaklistoffset */ |
| 886 | 0, /* tp_iter */ |
| 887 | 0, /* tp_iternext */ |
| 888 | type_methods, /* tp_methods */ |
| 889 | type_members, /* tp_members */ |
| 890 | type_getsets, /* tp_getset */ |
| 891 | 0, /* tp_base */ |
| 892 | 0, /* tp_dict */ |
| 893 | 0, /* tp_descr_get */ |
| 894 | 0, /* tp_descr_set */ |
| 895 | offsetof(PyTypeObject, tp_dict), /* tp_dictoffset */ |
| 896 | 0, /* tp_init */ |
| 897 | 0, /* tp_alloc */ |
| 898 | type_new, /* tp_new */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 899 | }; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 900 | |
| 901 | |
| 902 | /* The base type of all types (eventually)... except itself. */ |
| 903 | |
| 904 | static int |
| 905 | object_init(PyObject *self, PyObject *args, PyObject *kwds) |
| 906 | { |
| 907 | return 0; |
| 908 | } |
| 909 | |
| 910 | static void |
| 911 | object_dealloc(PyObject *self) |
| 912 | { |
| 913 | self->ob_type->tp_free(self); |
| 914 | } |
| 915 | |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 916 | static PyObject * |
| 917 | object_repr(PyObject *self) |
| 918 | { |
Guido van Rossum | 76e6963 | 2001-08-16 18:52:43 +0000 | [diff] [blame] | 919 | PyTypeObject *type; |
| 920 | PyObject *mod, *name; |
| 921 | char buf[200]; |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 922 | |
Guido van Rossum | 76e6963 | 2001-08-16 18:52:43 +0000 | [diff] [blame] | 923 | type = self->ob_type; |
| 924 | mod = type_module(type, NULL); |
| 925 | if (mod == NULL) |
| 926 | PyErr_Clear(); |
| 927 | else if (!PyString_Check(mod)) { |
| 928 | Py_DECREF(mod); |
| 929 | mod = NULL; |
| 930 | } |
| 931 | name = type_name(type, NULL); |
| 932 | if (name == NULL) |
| 933 | return NULL; |
| 934 | if (mod != NULL && strcmp(PyString_AS_STRING(mod), "__builtin__")) |
| 935 | sprintf(buf, "<%.80s.%.80s instance at %p>", |
| 936 | PyString_AS_STRING(mod), |
| 937 | PyString_AS_STRING(name), |
| 938 | self); |
| 939 | else |
| 940 | sprintf(buf, "<%.80s instance at %p>", type->tp_name, self); |
| 941 | Py_XDECREF(mod); |
| 942 | Py_DECREF(name); |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 943 | return PyString_FromString(buf); |
| 944 | } |
| 945 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 946 | static PyObject * |
| 947 | object_str(PyObject *self) |
| 948 | { |
| 949 | unaryfunc f; |
| 950 | |
| 951 | f = self->ob_type->tp_repr; |
| 952 | if (f == NULL) |
| 953 | f = object_repr; |
| 954 | return f(self); |
| 955 | } |
| 956 | |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 957 | static long |
| 958 | object_hash(PyObject *self) |
| 959 | { |
| 960 | return _Py_HashPointer(self); |
| 961 | } |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 962 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 963 | static void |
| 964 | object_free(PyObject *self) |
| 965 | { |
| 966 | PyObject_Del(self); |
| 967 | } |
| 968 | |
| 969 | static struct memberlist object_members[] = { |
| 970 | {"__class__", T_OBJECT, offsetof(PyObject, ob_type), READONLY}, |
| 971 | {0} |
| 972 | }; |
| 973 | |
| 974 | PyTypeObject PyBaseObject_Type = { |
| 975 | PyObject_HEAD_INIT(&PyType_Type) |
| 976 | 0, /* ob_size */ |
| 977 | "object", /* tp_name */ |
| 978 | sizeof(PyObject), /* tp_basicsize */ |
| 979 | 0, /* tp_itemsize */ |
| 980 | (destructor)object_dealloc, /* tp_dealloc */ |
| 981 | 0, /* tp_print */ |
| 982 | 0, /* tp_getattr */ |
| 983 | 0, /* tp_setattr */ |
| 984 | 0, /* tp_compare */ |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 985 | object_repr, /* tp_repr */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 986 | 0, /* tp_as_number */ |
| 987 | 0, /* tp_as_sequence */ |
| 988 | 0, /* tp_as_mapping */ |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 989 | object_hash, /* tp_hash */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 990 | 0, /* tp_call */ |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 991 | object_str, /* tp_str */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 992 | PyObject_GenericGetAttr, /* tp_getattro */ |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 993 | PyObject_GenericSetAttr, /* tp_setattro */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 994 | 0, /* tp_as_buffer */ |
| 995 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| 996 | "The most base type", /* tp_doc */ |
| 997 | 0, /* tp_traverse */ |
| 998 | 0, /* tp_clear */ |
| 999 | 0, /* tp_richcompare */ |
| 1000 | 0, /* tp_weaklistoffset */ |
| 1001 | 0, /* tp_iter */ |
| 1002 | 0, /* tp_iternext */ |
| 1003 | 0, /* tp_methods */ |
| 1004 | object_members, /* tp_members */ |
| 1005 | 0, /* tp_getset */ |
| 1006 | 0, /* tp_base */ |
| 1007 | 0, /* tp_dict */ |
| 1008 | 0, /* tp_descr_get */ |
| 1009 | 0, /* tp_descr_set */ |
| 1010 | 0, /* tp_dictoffset */ |
| 1011 | object_init, /* tp_init */ |
| 1012 | PyType_GenericAlloc, /* tp_alloc */ |
Guido van Rossum | c11e192 | 2001-08-09 19:38:15 +0000 | [diff] [blame] | 1013 | PyType_GenericNew, /* tp_new */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1014 | object_free, /* tp_free */ |
| 1015 | }; |
| 1016 | |
| 1017 | |
| 1018 | /* Initialize the __dict__ in a type object */ |
| 1019 | |
| 1020 | static int |
| 1021 | add_methods(PyTypeObject *type, PyMethodDef *meth) |
| 1022 | { |
| 1023 | PyObject *dict = type->tp_defined; |
| 1024 | |
| 1025 | for (; meth->ml_name != NULL; meth++) { |
| 1026 | PyObject *descr; |
| 1027 | if (PyDict_GetItemString(dict, meth->ml_name)) |
| 1028 | continue; |
| 1029 | descr = PyDescr_NewMethod(type, meth); |
| 1030 | if (descr == NULL) |
| 1031 | return -1; |
| 1032 | if (PyDict_SetItemString(dict,meth->ml_name,descr) < 0) |
| 1033 | return -1; |
| 1034 | Py_DECREF(descr); |
| 1035 | } |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
| 1039 | static int |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1040 | add_members(PyTypeObject *type, struct memberlist *memb) |
| 1041 | { |
| 1042 | PyObject *dict = type->tp_defined; |
| 1043 | |
| 1044 | for (; memb->name != NULL; memb++) { |
| 1045 | PyObject *descr; |
| 1046 | if (PyDict_GetItemString(dict, memb->name)) |
| 1047 | continue; |
| 1048 | descr = PyDescr_NewMember(type, memb); |
| 1049 | if (descr == NULL) |
| 1050 | return -1; |
| 1051 | if (PyDict_SetItemString(dict, memb->name, descr) < 0) |
| 1052 | return -1; |
| 1053 | Py_DECREF(descr); |
| 1054 | } |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
| 1058 | static int |
| 1059 | add_getset(PyTypeObject *type, struct getsetlist *gsp) |
| 1060 | { |
| 1061 | PyObject *dict = type->tp_defined; |
| 1062 | |
| 1063 | for (; gsp->name != NULL; gsp++) { |
| 1064 | PyObject *descr; |
| 1065 | if (PyDict_GetItemString(dict, gsp->name)) |
| 1066 | continue; |
| 1067 | descr = PyDescr_NewGetSet(type, gsp); |
| 1068 | |
| 1069 | if (descr == NULL) |
| 1070 | return -1; |
| 1071 | if (PyDict_SetItemString(dict, gsp->name, descr) < 0) |
| 1072 | return -1; |
| 1073 | Py_DECREF(descr); |
| 1074 | } |
| 1075 | return 0; |
| 1076 | } |
| 1077 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1078 | static void |
| 1079 | inherit_special(PyTypeObject *type, PyTypeObject *base) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1080 | { |
| 1081 | int oldsize, newsize; |
| 1082 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1083 | /* Special flag magic */ |
| 1084 | if (!type->tp_as_buffer && base->tp_as_buffer) { |
| 1085 | type->tp_flags &= ~Py_TPFLAGS_HAVE_GETCHARBUFFER; |
| 1086 | type->tp_flags |= |
| 1087 | base->tp_flags & Py_TPFLAGS_HAVE_GETCHARBUFFER; |
| 1088 | } |
| 1089 | if (!type->tp_as_sequence && base->tp_as_sequence) { |
| 1090 | type->tp_flags &= ~Py_TPFLAGS_HAVE_SEQUENCE_IN; |
| 1091 | type->tp_flags |= base->tp_flags & Py_TPFLAGS_HAVE_SEQUENCE_IN; |
| 1092 | } |
| 1093 | if ((type->tp_flags & Py_TPFLAGS_HAVE_INPLACEOPS) != |
| 1094 | (base->tp_flags & Py_TPFLAGS_HAVE_INPLACEOPS)) { |
| 1095 | if ((!type->tp_as_number && base->tp_as_number) || |
| 1096 | (!type->tp_as_sequence && base->tp_as_sequence)) { |
| 1097 | type->tp_flags &= ~Py_TPFLAGS_HAVE_INPLACEOPS; |
| 1098 | if (!type->tp_as_number && !type->tp_as_sequence) { |
| 1099 | type->tp_flags |= base->tp_flags & |
| 1100 | Py_TPFLAGS_HAVE_INPLACEOPS; |
| 1101 | } |
| 1102 | } |
| 1103 | /* Wow */ |
| 1104 | } |
| 1105 | if (!type->tp_as_number && base->tp_as_number) { |
| 1106 | type->tp_flags &= ~Py_TPFLAGS_CHECKTYPES; |
| 1107 | type->tp_flags |= base->tp_flags & Py_TPFLAGS_CHECKTYPES; |
| 1108 | } |
| 1109 | |
| 1110 | /* Copying basicsize is connected to the GC flags */ |
| 1111 | oldsize = PyType_BASICSIZE(base); |
| 1112 | newsize = type->tp_basicsize ? PyType_BASICSIZE(type) : oldsize; |
| 1113 | if (!(type->tp_flags & Py_TPFLAGS_GC) && |
| 1114 | (base->tp_flags & Py_TPFLAGS_GC) && |
| 1115 | (type->tp_flags & Py_TPFLAGS_HAVE_RICHCOMPARE/*GC slots exist*/) && |
| 1116 | (!type->tp_traverse && !type->tp_clear)) { |
| 1117 | type->tp_flags |= Py_TPFLAGS_GC; |
| 1118 | if (type->tp_traverse == NULL) |
| 1119 | type->tp_traverse = base->tp_traverse; |
| 1120 | if (type->tp_clear == NULL) |
| 1121 | type->tp_clear = base->tp_clear; |
| 1122 | } |
| 1123 | if (type->tp_flags & base->tp_flags & Py_TPFLAGS_HAVE_CLASS) { |
| 1124 | if (base != &PyBaseObject_Type || |
| 1125 | (type->tp_flags & Py_TPFLAGS_HEAPTYPE)) { |
| 1126 | if (type->tp_new == NULL) |
| 1127 | type->tp_new = base->tp_new; |
| 1128 | } |
| 1129 | } |
| 1130 | PyType_SET_BASICSIZE(type, newsize); |
Guido van Rossum | 4dd64ab | 2001-08-14 20:04:48 +0000 | [diff] [blame] | 1131 | |
| 1132 | /* Copy other non-function slots */ |
| 1133 | |
| 1134 | #undef COPYVAL |
| 1135 | #define COPYVAL(SLOT) \ |
| 1136 | if (type->SLOT == 0) type->SLOT = base->SLOT |
| 1137 | |
| 1138 | COPYVAL(tp_itemsize); |
| 1139 | if (type->tp_flags & base->tp_flags & Py_TPFLAGS_HAVE_WEAKREFS) { |
| 1140 | COPYVAL(tp_weaklistoffset); |
| 1141 | } |
| 1142 | if (type->tp_flags & base->tp_flags & Py_TPFLAGS_HAVE_CLASS) { |
| 1143 | COPYVAL(tp_dictoffset); |
| 1144 | } |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | static void |
| 1148 | inherit_slots(PyTypeObject *type, PyTypeObject *base) |
| 1149 | { |
| 1150 | PyTypeObject *basebase; |
| 1151 | |
| 1152 | #undef SLOTDEFINED |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1153 | #undef COPYSLOT |
| 1154 | #undef COPYNUM |
| 1155 | #undef COPYSEQ |
| 1156 | #undef COPYMAP |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1157 | |
| 1158 | #define SLOTDEFINED(SLOT) \ |
| 1159 | (base->SLOT != 0 && \ |
| 1160 | (basebase == NULL || base->SLOT != basebase->SLOT)) |
| 1161 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1162 | #define COPYSLOT(SLOT) \ |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1163 | if (!type->SLOT && SLOTDEFINED(SLOT)) type->SLOT = base->SLOT |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1164 | |
| 1165 | #define COPYNUM(SLOT) COPYSLOT(tp_as_number->SLOT) |
| 1166 | #define COPYSEQ(SLOT) COPYSLOT(tp_as_sequence->SLOT) |
| 1167 | #define COPYMAP(SLOT) COPYSLOT(tp_as_mapping->SLOT) |
| 1168 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1169 | /* This won't inherit indirect slots (from tp_as_number etc.) |
| 1170 | if type doesn't provide the space. */ |
| 1171 | |
| 1172 | if (type->tp_as_number != NULL && base->tp_as_number != NULL) { |
| 1173 | basebase = base->tp_base; |
| 1174 | if (basebase->tp_as_number == NULL) |
| 1175 | basebase = NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1176 | COPYNUM(nb_add); |
| 1177 | COPYNUM(nb_subtract); |
| 1178 | COPYNUM(nb_multiply); |
| 1179 | COPYNUM(nb_divide); |
| 1180 | COPYNUM(nb_remainder); |
| 1181 | COPYNUM(nb_divmod); |
| 1182 | COPYNUM(nb_power); |
| 1183 | COPYNUM(nb_negative); |
| 1184 | COPYNUM(nb_positive); |
| 1185 | COPYNUM(nb_absolute); |
| 1186 | COPYNUM(nb_nonzero); |
| 1187 | COPYNUM(nb_invert); |
| 1188 | COPYNUM(nb_lshift); |
| 1189 | COPYNUM(nb_rshift); |
| 1190 | COPYNUM(nb_and); |
| 1191 | COPYNUM(nb_xor); |
| 1192 | COPYNUM(nb_or); |
| 1193 | COPYNUM(nb_coerce); |
| 1194 | COPYNUM(nb_int); |
| 1195 | COPYNUM(nb_long); |
| 1196 | COPYNUM(nb_float); |
| 1197 | COPYNUM(nb_oct); |
| 1198 | COPYNUM(nb_hex); |
| 1199 | COPYNUM(nb_inplace_add); |
| 1200 | COPYNUM(nb_inplace_subtract); |
| 1201 | COPYNUM(nb_inplace_multiply); |
| 1202 | COPYNUM(nb_inplace_divide); |
| 1203 | COPYNUM(nb_inplace_remainder); |
| 1204 | COPYNUM(nb_inplace_power); |
| 1205 | COPYNUM(nb_inplace_lshift); |
| 1206 | COPYNUM(nb_inplace_rshift); |
| 1207 | COPYNUM(nb_inplace_and); |
| 1208 | COPYNUM(nb_inplace_xor); |
| 1209 | COPYNUM(nb_inplace_or); |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 1210 | if (base->tp_flags & Py_TPFLAGS_CHECKTYPES) { |
| 1211 | COPYNUM(nb_true_divide); |
| 1212 | COPYNUM(nb_floor_divide); |
| 1213 | COPYNUM(nb_inplace_true_divide); |
| 1214 | COPYNUM(nb_inplace_floor_divide); |
| 1215 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1216 | } |
| 1217 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1218 | if (type->tp_as_sequence != NULL && base->tp_as_sequence != NULL) { |
| 1219 | basebase = base->tp_base; |
| 1220 | if (basebase->tp_as_sequence == NULL) |
| 1221 | basebase = NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1222 | COPYSEQ(sq_length); |
| 1223 | COPYSEQ(sq_concat); |
| 1224 | COPYSEQ(sq_repeat); |
| 1225 | COPYSEQ(sq_item); |
| 1226 | COPYSEQ(sq_slice); |
| 1227 | COPYSEQ(sq_ass_item); |
| 1228 | COPYSEQ(sq_ass_slice); |
| 1229 | COPYSEQ(sq_contains); |
| 1230 | COPYSEQ(sq_inplace_concat); |
| 1231 | COPYSEQ(sq_inplace_repeat); |
| 1232 | } |
| 1233 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1234 | if (type->tp_as_mapping != NULL && base->tp_as_mapping != NULL) { |
| 1235 | basebase = base->tp_base; |
| 1236 | if (basebase->tp_as_mapping == NULL) |
| 1237 | basebase = NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1238 | COPYMAP(mp_length); |
| 1239 | COPYMAP(mp_subscript); |
| 1240 | COPYMAP(mp_ass_subscript); |
| 1241 | } |
| 1242 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1243 | basebase = base->tp_base; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1244 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1245 | COPYSLOT(tp_dealloc); |
| 1246 | COPYSLOT(tp_print); |
| 1247 | if (type->tp_getattr == NULL && type->tp_getattro == NULL) { |
| 1248 | type->tp_getattr = base->tp_getattr; |
| 1249 | type->tp_getattro = base->tp_getattro; |
| 1250 | } |
| 1251 | if (type->tp_setattr == NULL && type->tp_setattro == NULL) { |
| 1252 | type->tp_setattr = base->tp_setattr; |
| 1253 | type->tp_setattro = base->tp_setattro; |
| 1254 | } |
| 1255 | /* tp_compare see tp_richcompare */ |
| 1256 | COPYSLOT(tp_repr); |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 1257 | /* tp_hash see tp_richcompare */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1258 | COPYSLOT(tp_call); |
| 1259 | COPYSLOT(tp_str); |
| 1260 | COPYSLOT(tp_as_buffer); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1261 | if (type->tp_flags & base->tp_flags & Py_TPFLAGS_HAVE_RICHCOMPARE) { |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 1262 | if (type->tp_compare == NULL && |
| 1263 | type->tp_richcompare == NULL && |
| 1264 | type->tp_hash == NULL) |
| 1265 | { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1266 | type->tp_compare = base->tp_compare; |
| 1267 | type->tp_richcompare = base->tp_richcompare; |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 1268 | type->tp_hash = base->tp_hash; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1269 | } |
| 1270 | } |
| 1271 | else { |
| 1272 | COPYSLOT(tp_compare); |
| 1273 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1274 | if (type->tp_flags & base->tp_flags & Py_TPFLAGS_HAVE_ITER) { |
| 1275 | COPYSLOT(tp_iter); |
| 1276 | COPYSLOT(tp_iternext); |
| 1277 | } |
| 1278 | if (type->tp_flags & base->tp_flags & Py_TPFLAGS_HAVE_CLASS) { |
| 1279 | COPYSLOT(tp_descr_get); |
| 1280 | COPYSLOT(tp_descr_set); |
| 1281 | COPYSLOT(tp_dictoffset); |
| 1282 | COPYSLOT(tp_init); |
| 1283 | COPYSLOT(tp_alloc); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1284 | COPYSLOT(tp_free); |
| 1285 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1288 | staticforward int add_operators(PyTypeObject *); |
| 1289 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1290 | int |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 1291 | PyType_Ready(PyTypeObject *type) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1292 | { |
| 1293 | PyObject *dict, *bases, *x; |
| 1294 | PyTypeObject *base; |
| 1295 | int i, n; |
| 1296 | |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1297 | if (type->tp_flags & Py_TPFLAGS_READY) { |
| 1298 | assert(type->tp_dict != NULL); |
| 1299 | return 0; |
| 1300 | } |
| 1301 | assert((type->tp_flags & Py_TPFLAGS_READYING) == 0); |
| 1302 | assert(type->tp_dict == NULL); |
| 1303 | |
| 1304 | type->tp_flags |= Py_TPFLAGS_READYING; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1305 | |
| 1306 | /* Initialize tp_base (defaults to BaseObject unless that's us) */ |
| 1307 | base = type->tp_base; |
| 1308 | if (base == NULL && type != &PyBaseObject_Type) |
| 1309 | base = type->tp_base = &PyBaseObject_Type; |
| 1310 | |
| 1311 | /* Initialize tp_bases */ |
| 1312 | bases = type->tp_bases; |
| 1313 | if (bases == NULL) { |
| 1314 | if (base == NULL) |
| 1315 | bases = PyTuple_New(0); |
| 1316 | else |
| 1317 | bases = Py_BuildValue("(O)", base); |
| 1318 | if (bases == NULL) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1319 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1320 | type->tp_bases = bases; |
| 1321 | } |
| 1322 | |
| 1323 | /* Initialize the base class */ |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 1324 | if (base && base->tp_dict == NULL) { |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 1325 | if (PyType_Ready(base) < 0) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1326 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1327 | } |
| 1328 | |
| 1329 | /* Initialize tp_defined */ |
| 1330 | dict = type->tp_defined; |
| 1331 | if (dict == NULL) { |
| 1332 | dict = PyDict_New(); |
| 1333 | if (dict == NULL) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1334 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1335 | type->tp_defined = dict; |
| 1336 | } |
| 1337 | |
| 1338 | /* Add type-specific descriptors to tp_defined */ |
| 1339 | if (add_operators(type) < 0) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1340 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1341 | if (type->tp_methods != NULL) { |
| 1342 | if (add_methods(type, type->tp_methods) < 0) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1343 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1344 | } |
| 1345 | if (type->tp_members != NULL) { |
| 1346 | if (add_members(type, type->tp_members) < 0) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1347 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1348 | } |
| 1349 | if (type->tp_getset != NULL) { |
| 1350 | if (add_getset(type, type->tp_getset) < 0) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1351 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1352 | } |
| 1353 | |
| 1354 | /* Temporarily make tp_dict the same object as tp_defined. |
| 1355 | (This is needed to call mro(), and can stay this way for |
| 1356 | dynamic types). */ |
| 1357 | Py_INCREF(type->tp_defined); |
| 1358 | type->tp_dict = type->tp_defined; |
| 1359 | |
| 1360 | /* Calculate method resolution order */ |
| 1361 | if (mro_internal(type) < 0) { |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1362 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1363 | } |
| 1364 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1365 | /* Inherit special flags from dominant base */ |
| 1366 | if (type->tp_base != NULL) |
| 1367 | inherit_special(type, type->tp_base); |
| 1368 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1369 | /* Initialize tp_dict properly */ |
Guido van Rossum | 8de8680 | 2001-08-12 03:43:35 +0000 | [diff] [blame] | 1370 | if (PyType_HasFeature(type, Py_TPFLAGS_DYNAMICTYPE)) { |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 1371 | /* For a dynamic type, all slots are overridden */ |
| 1372 | override_slots(type, NULL); |
Guido van Rossum | 8de8680 | 2001-08-12 03:43:35 +0000 | [diff] [blame] | 1373 | } |
| 1374 | else { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1375 | /* For a static type, tp_dict is the consolidation |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1376 | of the tp_defined of its bases in MRO. */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1377 | Py_DECREF(type->tp_dict); |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1378 | type->tp_dict = PyDict_Copy(type->tp_defined); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1379 | if (type->tp_dict == NULL) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1380 | goto error; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1381 | bases = type->tp_mro; |
| 1382 | assert(bases != NULL); |
| 1383 | assert(PyTuple_Check(bases)); |
| 1384 | n = PyTuple_GET_SIZE(bases); |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1385 | for (i = 1; i < n; i++) { |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1386 | base = (PyTypeObject *)PyTuple_GET_ITEM(bases, i); |
| 1387 | assert(PyType_Check(base)); |
| 1388 | x = base->tp_defined; |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1389 | if (x != NULL && PyDict_Merge(type->tp_dict, x, 0) < 0) |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1390 | goto error; |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1391 | inherit_slots(type, base); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1392 | } |
| 1393 | } |
| 1394 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1395 | /* Some more special stuff */ |
| 1396 | base = type->tp_base; |
| 1397 | if (base != NULL) { |
| 1398 | if (type->tp_as_number == NULL) |
| 1399 | type->tp_as_number = base->tp_as_number; |
| 1400 | if (type->tp_as_sequence == NULL) |
| 1401 | type->tp_as_sequence = base->tp_as_sequence; |
| 1402 | if (type->tp_as_mapping == NULL) |
| 1403 | type->tp_as_mapping = base->tp_as_mapping; |
| 1404 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1405 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 1406 | /* All done -- set the ready flag */ |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1407 | assert(type->tp_dict != NULL); |
| 1408 | type->tp_flags = |
| 1409 | (type->tp_flags & ~Py_TPFLAGS_READYING) | Py_TPFLAGS_READY; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1410 | return 0; |
Guido van Rossum | d614f97 | 2001-08-10 17:39:49 +0000 | [diff] [blame] | 1411 | |
| 1412 | error: |
| 1413 | type->tp_flags &= ~Py_TPFLAGS_READYING; |
| 1414 | return -1; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1415 | } |
| 1416 | |
| 1417 | |
| 1418 | /* Generic wrappers for overloadable 'operators' such as __getitem__ */ |
| 1419 | |
| 1420 | /* There's a wrapper *function* for each distinct function typedef used |
| 1421 | for type object slots (e.g. binaryfunc, ternaryfunc, etc.). There's a |
| 1422 | wrapper *table* for each distinct operation (e.g. __len__, __add__). |
| 1423 | Most tables have only one entry; the tables for binary operators have two |
| 1424 | entries, one regular and one with reversed arguments. */ |
| 1425 | |
| 1426 | static PyObject * |
| 1427 | wrap_inquiry(PyObject *self, PyObject *args, void *wrapped) |
| 1428 | { |
| 1429 | inquiry func = (inquiry)wrapped; |
| 1430 | int res; |
| 1431 | |
| 1432 | if (!PyArg_ParseTuple(args, "")) |
| 1433 | return NULL; |
| 1434 | res = (*func)(self); |
| 1435 | if (res == -1 && PyErr_Occurred()) |
| 1436 | return NULL; |
| 1437 | return PyInt_FromLong((long)res); |
| 1438 | } |
| 1439 | |
| 1440 | static struct wrapperbase tab_len[] = { |
| 1441 | {"__len__", (wrapperfunc)wrap_inquiry, "x.__len__() <==> len(x)"}, |
| 1442 | {0} |
| 1443 | }; |
| 1444 | |
| 1445 | static PyObject * |
| 1446 | wrap_binaryfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1447 | { |
| 1448 | binaryfunc func = (binaryfunc)wrapped; |
| 1449 | PyObject *other; |
| 1450 | |
| 1451 | if (!PyArg_ParseTuple(args, "O", &other)) |
| 1452 | return NULL; |
| 1453 | return (*func)(self, other); |
| 1454 | } |
| 1455 | |
| 1456 | static PyObject * |
| 1457 | wrap_binaryfunc_r(PyObject *self, PyObject *args, void *wrapped) |
| 1458 | { |
| 1459 | binaryfunc func = (binaryfunc)wrapped; |
| 1460 | PyObject *other; |
| 1461 | |
| 1462 | if (!PyArg_ParseTuple(args, "O", &other)) |
| 1463 | return NULL; |
| 1464 | return (*func)(other, self); |
| 1465 | } |
| 1466 | |
| 1467 | #undef BINARY |
| 1468 | #define BINARY(NAME, OP) \ |
| 1469 | static struct wrapperbase tab_##NAME[] = { \ |
| 1470 | {"__" #NAME "__", \ |
| 1471 | (wrapperfunc)wrap_binaryfunc, \ |
| 1472 | "x.__" #NAME "__(y) <==> " #OP}, \ |
| 1473 | {"__r" #NAME "__", \ |
| 1474 | (wrapperfunc)wrap_binaryfunc_r, \ |
| 1475 | "y.__r" #NAME "__(x) <==> " #OP}, \ |
| 1476 | {0} \ |
| 1477 | } |
| 1478 | |
| 1479 | BINARY(add, "x+y"); |
| 1480 | BINARY(sub, "x-y"); |
| 1481 | BINARY(mul, "x*y"); |
| 1482 | BINARY(div, "x/y"); |
| 1483 | BINARY(mod, "x%y"); |
| 1484 | BINARY(divmod, "divmod(x,y)"); |
| 1485 | BINARY(lshift, "x<<y"); |
| 1486 | BINARY(rshift, "x>>y"); |
| 1487 | BINARY(and, "x&y"); |
| 1488 | BINARY(xor, "x^y"); |
| 1489 | BINARY(or, "x|y"); |
| 1490 | |
| 1491 | static PyObject * |
| 1492 | wrap_ternaryfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1493 | { |
| 1494 | ternaryfunc func = (ternaryfunc)wrapped; |
| 1495 | PyObject *other; |
| 1496 | PyObject *third = Py_None; |
| 1497 | |
| 1498 | /* Note: This wrapper only works for __pow__() */ |
| 1499 | |
| 1500 | if (!PyArg_ParseTuple(args, "O|O", &other, &third)) |
| 1501 | return NULL; |
| 1502 | return (*func)(self, other, third); |
| 1503 | } |
| 1504 | |
| 1505 | #undef TERNARY |
| 1506 | #define TERNARY(NAME, OP) \ |
| 1507 | static struct wrapperbase tab_##NAME[] = { \ |
| 1508 | {"__" #NAME "__", \ |
| 1509 | (wrapperfunc)wrap_ternaryfunc, \ |
| 1510 | "x.__" #NAME "__(y, z) <==> " #OP}, \ |
| 1511 | {"__r" #NAME "__", \ |
| 1512 | (wrapperfunc)wrap_ternaryfunc, \ |
| 1513 | "y.__r" #NAME "__(x, z) <==> " #OP}, \ |
| 1514 | {0} \ |
| 1515 | } |
| 1516 | |
| 1517 | TERNARY(pow, "(x**y) % z"); |
| 1518 | |
| 1519 | #undef UNARY |
| 1520 | #define UNARY(NAME, OP) \ |
| 1521 | static struct wrapperbase tab_##NAME[] = { \ |
| 1522 | {"__" #NAME "__", \ |
| 1523 | (wrapperfunc)wrap_unaryfunc, \ |
| 1524 | "x.__" #NAME "__() <==> " #OP}, \ |
| 1525 | {0} \ |
| 1526 | } |
| 1527 | |
| 1528 | static PyObject * |
| 1529 | wrap_unaryfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1530 | { |
| 1531 | unaryfunc func = (unaryfunc)wrapped; |
| 1532 | |
| 1533 | if (!PyArg_ParseTuple(args, "")) |
| 1534 | return NULL; |
| 1535 | return (*func)(self); |
| 1536 | } |
| 1537 | |
| 1538 | UNARY(neg, "-x"); |
| 1539 | UNARY(pos, "+x"); |
| 1540 | UNARY(abs, "abs(x)"); |
| 1541 | UNARY(nonzero, "x != 0"); |
| 1542 | UNARY(invert, "~x"); |
| 1543 | UNARY(int, "int(x)"); |
| 1544 | UNARY(long, "long(x)"); |
| 1545 | UNARY(float, "float(x)"); |
| 1546 | UNARY(oct, "oct(x)"); |
| 1547 | UNARY(hex, "hex(x)"); |
| 1548 | |
| 1549 | #undef IBINARY |
| 1550 | #define IBINARY(NAME, OP) \ |
| 1551 | static struct wrapperbase tab_##NAME[] = { \ |
| 1552 | {"__" #NAME "__", \ |
| 1553 | (wrapperfunc)wrap_binaryfunc, \ |
| 1554 | "x.__" #NAME "__(y) <==> " #OP}, \ |
| 1555 | {0} \ |
| 1556 | } |
| 1557 | |
| 1558 | IBINARY(iadd, "x+=y"); |
| 1559 | IBINARY(isub, "x-=y"); |
| 1560 | IBINARY(imul, "x*=y"); |
| 1561 | IBINARY(idiv, "x/=y"); |
| 1562 | IBINARY(imod, "x%=y"); |
| 1563 | IBINARY(ilshift, "x<<=y"); |
| 1564 | IBINARY(irshift, "x>>=y"); |
| 1565 | IBINARY(iand, "x&=y"); |
| 1566 | IBINARY(ixor, "x^=y"); |
| 1567 | IBINARY(ior, "x|=y"); |
| 1568 | |
| 1569 | #undef ITERNARY |
| 1570 | #define ITERNARY(NAME, OP) \ |
| 1571 | static struct wrapperbase tab_##NAME[] = { \ |
| 1572 | {"__" #NAME "__", \ |
| 1573 | (wrapperfunc)wrap_ternaryfunc, \ |
| 1574 | "x.__" #NAME "__(y) <==> " #OP}, \ |
| 1575 | {0} \ |
| 1576 | } |
| 1577 | |
| 1578 | ITERNARY(ipow, "x = (x**y) % z"); |
| 1579 | |
| 1580 | static struct wrapperbase tab_getitem[] = { |
| 1581 | {"__getitem__", (wrapperfunc)wrap_binaryfunc, |
| 1582 | "x.__getitem__(y) <==> x[y]"}, |
| 1583 | {0} |
| 1584 | }; |
| 1585 | |
| 1586 | static PyObject * |
| 1587 | wrap_intargfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1588 | { |
| 1589 | intargfunc func = (intargfunc)wrapped; |
| 1590 | int i; |
| 1591 | |
| 1592 | if (!PyArg_ParseTuple(args, "i", &i)) |
| 1593 | return NULL; |
| 1594 | return (*func)(self, i); |
| 1595 | } |
| 1596 | |
| 1597 | static struct wrapperbase tab_mul_int[] = { |
| 1598 | {"__mul__", (wrapperfunc)wrap_intargfunc, "x.__mul__(n) <==> x*n"}, |
| 1599 | {"__rmul__", (wrapperfunc)wrap_intargfunc, "x.__rmul__(n) <==> n*x"}, |
| 1600 | {0} |
| 1601 | }; |
| 1602 | |
| 1603 | static struct wrapperbase tab_concat[] = { |
| 1604 | {"__add__", (wrapperfunc)wrap_binaryfunc, "x.__add__(y) <==> x+y"}, |
| 1605 | {0} |
| 1606 | }; |
| 1607 | |
| 1608 | static struct wrapperbase tab_imul_int[] = { |
| 1609 | {"__imul__", (wrapperfunc)wrap_intargfunc, "x.__imul__(n) <==> x*=n"}, |
| 1610 | {0} |
| 1611 | }; |
| 1612 | |
| 1613 | static struct wrapperbase tab_getitem_int[] = { |
| 1614 | {"__getitem__", (wrapperfunc)wrap_intargfunc, |
| 1615 | "x.__getitem__(i) <==> x[i]"}, |
| 1616 | {0} |
| 1617 | }; |
| 1618 | |
| 1619 | static PyObject * |
| 1620 | wrap_intintargfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1621 | { |
| 1622 | intintargfunc func = (intintargfunc)wrapped; |
| 1623 | int i, j; |
| 1624 | |
| 1625 | if (!PyArg_ParseTuple(args, "ii", &i, &j)) |
| 1626 | return NULL; |
| 1627 | return (*func)(self, i, j); |
| 1628 | } |
| 1629 | |
| 1630 | static struct wrapperbase tab_getslice[] = { |
| 1631 | {"__getslice__", (wrapperfunc)wrap_intintargfunc, |
| 1632 | "x.__getslice__(i, j) <==> x[i:j]"}, |
| 1633 | {0} |
| 1634 | }; |
| 1635 | |
| 1636 | static PyObject * |
| 1637 | wrap_intobjargproc(PyObject *self, PyObject *args, void *wrapped) |
| 1638 | { |
| 1639 | intobjargproc func = (intobjargproc)wrapped; |
| 1640 | int i, res; |
| 1641 | PyObject *value; |
| 1642 | |
| 1643 | if (!PyArg_ParseTuple(args, "iO", &i, &value)) |
| 1644 | return NULL; |
| 1645 | res = (*func)(self, i, value); |
| 1646 | if (res == -1 && PyErr_Occurred()) |
| 1647 | return NULL; |
| 1648 | Py_INCREF(Py_None); |
| 1649 | return Py_None; |
| 1650 | } |
| 1651 | |
Guido van Rossum | 2b8d7bd | 2001-08-02 15:31:58 +0000 | [diff] [blame] | 1652 | static PyObject * |
| 1653 | wrap_delitem_int(PyObject *self, PyObject *args, void *wrapped) |
| 1654 | { |
| 1655 | intobjargproc func = (intobjargproc)wrapped; |
| 1656 | int i, res; |
| 1657 | |
| 1658 | if (!PyArg_ParseTuple(args, "i", &i)) |
| 1659 | return NULL; |
| 1660 | res = (*func)(self, i, NULL); |
| 1661 | if (res == -1 && PyErr_Occurred()) |
| 1662 | return NULL; |
| 1663 | Py_INCREF(Py_None); |
| 1664 | return Py_None; |
| 1665 | } |
| 1666 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1667 | static struct wrapperbase tab_setitem_int[] = { |
| 1668 | {"__setitem__", (wrapperfunc)wrap_intobjargproc, |
| 1669 | "x.__setitem__(i, y) <==> x[i]=y"}, |
Guido van Rossum | 2b8d7bd | 2001-08-02 15:31:58 +0000 | [diff] [blame] | 1670 | {"__delitem__", (wrapperfunc)wrap_delitem_int, |
| 1671 | "x.__delitem__(y) <==> del x[y]"}, |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1672 | {0} |
| 1673 | }; |
| 1674 | |
| 1675 | static PyObject * |
| 1676 | wrap_intintobjargproc(PyObject *self, PyObject *args, void *wrapped) |
| 1677 | { |
| 1678 | intintobjargproc func = (intintobjargproc)wrapped; |
| 1679 | int i, j, res; |
| 1680 | PyObject *value; |
| 1681 | |
| 1682 | if (!PyArg_ParseTuple(args, "iiO", &i, &j, &value)) |
| 1683 | return NULL; |
| 1684 | res = (*func)(self, i, j, value); |
| 1685 | if (res == -1 && PyErr_Occurred()) |
| 1686 | return NULL; |
| 1687 | Py_INCREF(Py_None); |
| 1688 | return Py_None; |
| 1689 | } |
| 1690 | |
| 1691 | static struct wrapperbase tab_setslice[] = { |
| 1692 | {"__setslice__", (wrapperfunc)wrap_intintobjargproc, |
| 1693 | "x.__setslice__(i, j, y) <==> x[i:j]=y"}, |
| 1694 | {0} |
| 1695 | }; |
| 1696 | |
| 1697 | /* XXX objobjproc is a misnomer; should be objargpred */ |
| 1698 | static PyObject * |
| 1699 | wrap_objobjproc(PyObject *self, PyObject *args, void *wrapped) |
| 1700 | { |
| 1701 | objobjproc func = (objobjproc)wrapped; |
| 1702 | int res; |
| 1703 | PyObject *value; |
| 1704 | |
| 1705 | if (!PyArg_ParseTuple(args, "O", &value)) |
| 1706 | return NULL; |
| 1707 | res = (*func)(self, value); |
| 1708 | if (res == -1 && PyErr_Occurred()) |
| 1709 | return NULL; |
| 1710 | return PyInt_FromLong((long)res); |
| 1711 | } |
| 1712 | |
| 1713 | static struct wrapperbase tab_contains[] = { |
| 1714 | {"__contains__", (wrapperfunc)wrap_objobjproc, |
| 1715 | "x.__contains__(y) <==> y in x"}, |
| 1716 | {0} |
| 1717 | }; |
| 1718 | |
| 1719 | static PyObject * |
| 1720 | wrap_objobjargproc(PyObject *self, PyObject *args, void *wrapped) |
| 1721 | { |
| 1722 | objobjargproc func = (objobjargproc)wrapped; |
| 1723 | int res; |
| 1724 | PyObject *key, *value; |
| 1725 | |
| 1726 | if (!PyArg_ParseTuple(args, "OO", &key, &value)) |
| 1727 | return NULL; |
| 1728 | res = (*func)(self, key, value); |
| 1729 | if (res == -1 && PyErr_Occurred()) |
| 1730 | return NULL; |
| 1731 | Py_INCREF(Py_None); |
| 1732 | return Py_None; |
| 1733 | } |
| 1734 | |
Guido van Rossum | 2b8d7bd | 2001-08-02 15:31:58 +0000 | [diff] [blame] | 1735 | static PyObject * |
| 1736 | wrap_delitem(PyObject *self, PyObject *args, void *wrapped) |
| 1737 | { |
| 1738 | objobjargproc func = (objobjargproc)wrapped; |
| 1739 | int res; |
| 1740 | PyObject *key; |
| 1741 | |
| 1742 | if (!PyArg_ParseTuple(args, "O", &key)) |
| 1743 | return NULL; |
| 1744 | res = (*func)(self, key, NULL); |
| 1745 | if (res == -1 && PyErr_Occurred()) |
| 1746 | return NULL; |
| 1747 | Py_INCREF(Py_None); |
| 1748 | return Py_None; |
| 1749 | } |
| 1750 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1751 | static struct wrapperbase tab_setitem[] = { |
| 1752 | {"__setitem__", (wrapperfunc)wrap_objobjargproc, |
| 1753 | "x.__setitem__(y, z) <==> x[y]=z"}, |
Guido van Rossum | 2b8d7bd | 2001-08-02 15:31:58 +0000 | [diff] [blame] | 1754 | {"__delitem__", (wrapperfunc)wrap_delitem, |
| 1755 | "x.__delitem__(y) <==> del x[y]"}, |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1756 | {0} |
| 1757 | }; |
| 1758 | |
| 1759 | static PyObject * |
| 1760 | wrap_cmpfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1761 | { |
| 1762 | cmpfunc func = (cmpfunc)wrapped; |
| 1763 | int res; |
| 1764 | PyObject *other; |
| 1765 | |
| 1766 | if (!PyArg_ParseTuple(args, "O", &other)) |
| 1767 | return NULL; |
| 1768 | res = (*func)(self, other); |
| 1769 | if (PyErr_Occurred()) |
| 1770 | return NULL; |
| 1771 | return PyInt_FromLong((long)res); |
| 1772 | } |
| 1773 | |
| 1774 | static struct wrapperbase tab_cmp[] = { |
| 1775 | {"__cmp__", (wrapperfunc)wrap_cmpfunc, |
| 1776 | "x.__cmp__(y) <==> cmp(x,y)"}, |
| 1777 | {0} |
| 1778 | }; |
| 1779 | |
| 1780 | static struct wrapperbase tab_repr[] = { |
| 1781 | {"__repr__", (wrapperfunc)wrap_unaryfunc, |
| 1782 | "x.__repr__() <==> repr(x)"}, |
| 1783 | {0} |
| 1784 | }; |
| 1785 | |
| 1786 | static struct wrapperbase tab_getattr[] = { |
| 1787 | {"__getattr__", (wrapperfunc)wrap_binaryfunc, |
| 1788 | "x.__getattr__('name') <==> x.name"}, |
| 1789 | {0} |
| 1790 | }; |
| 1791 | |
| 1792 | static PyObject * |
| 1793 | wrap_setattr(PyObject *self, PyObject *args, void *wrapped) |
| 1794 | { |
| 1795 | setattrofunc func = (setattrofunc)wrapped; |
| 1796 | int res; |
| 1797 | PyObject *name, *value; |
| 1798 | |
| 1799 | if (!PyArg_ParseTuple(args, "OO", &name, &value)) |
| 1800 | return NULL; |
| 1801 | res = (*func)(self, name, value); |
| 1802 | if (res < 0) |
| 1803 | return NULL; |
| 1804 | Py_INCREF(Py_None); |
| 1805 | return Py_None; |
| 1806 | } |
| 1807 | |
| 1808 | static PyObject * |
| 1809 | wrap_delattr(PyObject *self, PyObject *args, void *wrapped) |
| 1810 | { |
| 1811 | setattrofunc func = (setattrofunc)wrapped; |
| 1812 | int res; |
| 1813 | PyObject *name; |
| 1814 | |
| 1815 | if (!PyArg_ParseTuple(args, "O", &name)) |
| 1816 | return NULL; |
| 1817 | res = (*func)(self, name, NULL); |
| 1818 | if (res < 0) |
| 1819 | return NULL; |
| 1820 | Py_INCREF(Py_None); |
| 1821 | return Py_None; |
| 1822 | } |
| 1823 | |
| 1824 | static struct wrapperbase tab_setattr[] = { |
| 1825 | {"__setattr__", (wrapperfunc)wrap_setattr, |
| 1826 | "x.__setattr__('name', value) <==> x.name = value"}, |
| 1827 | {"__delattr__", (wrapperfunc)wrap_delattr, |
| 1828 | "x.__delattr__('name') <==> del x.name"}, |
| 1829 | {0} |
| 1830 | }; |
| 1831 | |
| 1832 | static PyObject * |
| 1833 | wrap_hashfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1834 | { |
| 1835 | hashfunc func = (hashfunc)wrapped; |
| 1836 | long res; |
| 1837 | |
| 1838 | if (!PyArg_ParseTuple(args, "")) |
| 1839 | return NULL; |
| 1840 | res = (*func)(self); |
| 1841 | if (res == -1 && PyErr_Occurred()) |
| 1842 | return NULL; |
| 1843 | return PyInt_FromLong(res); |
| 1844 | } |
| 1845 | |
| 1846 | static struct wrapperbase tab_hash[] = { |
| 1847 | {"__hash__", (wrapperfunc)wrap_hashfunc, |
| 1848 | "x.__hash__() <==> hash(x)"}, |
| 1849 | {0} |
| 1850 | }; |
| 1851 | |
| 1852 | static PyObject * |
| 1853 | wrap_call(PyObject *self, PyObject *args, void *wrapped) |
| 1854 | { |
| 1855 | ternaryfunc func = (ternaryfunc)wrapped; |
| 1856 | |
| 1857 | /* XXX What about keyword arguments? */ |
| 1858 | return (*func)(self, args, NULL); |
| 1859 | } |
| 1860 | |
| 1861 | static struct wrapperbase tab_call[] = { |
| 1862 | {"__call__", (wrapperfunc)wrap_call, |
| 1863 | "x.__call__(...) <==> x(...)"}, |
| 1864 | {0} |
| 1865 | }; |
| 1866 | |
| 1867 | static struct wrapperbase tab_str[] = { |
| 1868 | {"__str__", (wrapperfunc)wrap_unaryfunc, |
| 1869 | "x.__str__() <==> str(x)"}, |
| 1870 | {0} |
| 1871 | }; |
| 1872 | |
| 1873 | static PyObject * |
| 1874 | wrap_richcmpfunc(PyObject *self, PyObject *args, void *wrapped, int op) |
| 1875 | { |
| 1876 | richcmpfunc func = (richcmpfunc)wrapped; |
| 1877 | PyObject *other; |
| 1878 | |
| 1879 | if (!PyArg_ParseTuple(args, "O", &other)) |
| 1880 | return NULL; |
| 1881 | return (*func)(self, other, op); |
| 1882 | } |
| 1883 | |
| 1884 | #undef RICHCMP_WRAPPER |
| 1885 | #define RICHCMP_WRAPPER(NAME, OP) \ |
| 1886 | static PyObject * \ |
| 1887 | richcmp_##NAME(PyObject *self, PyObject *args, void *wrapped) \ |
| 1888 | { \ |
| 1889 | return wrap_richcmpfunc(self, args, wrapped, OP); \ |
| 1890 | } |
| 1891 | |
Jack Jansen | 8e938b4 | 2001-08-08 15:29:49 +0000 | [diff] [blame] | 1892 | RICHCMP_WRAPPER(lt, Py_LT) |
| 1893 | RICHCMP_WRAPPER(le, Py_LE) |
| 1894 | RICHCMP_WRAPPER(eq, Py_EQ) |
| 1895 | RICHCMP_WRAPPER(ne, Py_NE) |
| 1896 | RICHCMP_WRAPPER(gt, Py_GT) |
| 1897 | RICHCMP_WRAPPER(ge, Py_GE) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1898 | |
| 1899 | #undef RICHCMP_ENTRY |
| 1900 | #define RICHCMP_ENTRY(NAME, EXPR) \ |
| 1901 | {"__" #NAME "__", (wrapperfunc)richcmp_##NAME, \ |
| 1902 | "x.__" #NAME "__(y) <==> " EXPR} |
| 1903 | |
| 1904 | static struct wrapperbase tab_richcmp[] = { |
| 1905 | RICHCMP_ENTRY(lt, "x<y"), |
| 1906 | RICHCMP_ENTRY(le, "x<=y"), |
| 1907 | RICHCMP_ENTRY(eq, "x==y"), |
| 1908 | RICHCMP_ENTRY(ne, "x!=y"), |
| 1909 | RICHCMP_ENTRY(gt, "x>y"), |
| 1910 | RICHCMP_ENTRY(ge, "x>=y"), |
| 1911 | {0} |
| 1912 | }; |
| 1913 | |
| 1914 | static struct wrapperbase tab_iter[] = { |
| 1915 | {"__iter__", (wrapperfunc)wrap_unaryfunc, "x.__iter__() <==> iter(x)"}, |
| 1916 | {0} |
| 1917 | }; |
| 1918 | |
| 1919 | static PyObject * |
| 1920 | wrap_next(PyObject *self, PyObject *args, void *wrapped) |
| 1921 | { |
| 1922 | unaryfunc func = (unaryfunc)wrapped; |
| 1923 | PyObject *res; |
| 1924 | |
| 1925 | if (!PyArg_ParseTuple(args, "")) |
| 1926 | return NULL; |
| 1927 | res = (*func)(self); |
| 1928 | if (res == NULL && !PyErr_Occurred()) |
| 1929 | PyErr_SetNone(PyExc_StopIteration); |
| 1930 | return res; |
| 1931 | } |
| 1932 | |
| 1933 | static struct wrapperbase tab_next[] = { |
| 1934 | {"next", (wrapperfunc)wrap_next, |
| 1935 | "x.next() -> the next value, or raise StopIteration"}, |
| 1936 | {0} |
| 1937 | }; |
| 1938 | |
| 1939 | static PyObject * |
| 1940 | wrap_descr_get(PyObject *self, PyObject *args, void *wrapped) |
| 1941 | { |
| 1942 | descrgetfunc func = (descrgetfunc)wrapped; |
| 1943 | PyObject *obj; |
| 1944 | PyObject *type = NULL; |
| 1945 | |
| 1946 | if (!PyArg_ParseTuple(args, "O|O", &obj, &type)) |
| 1947 | return NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 1948 | return (*func)(self, obj, type); |
| 1949 | } |
| 1950 | |
| 1951 | static struct wrapperbase tab_descr_get[] = { |
| 1952 | {"__get__", (wrapperfunc)wrap_descr_get, |
| 1953 | "descr.__get__(obj, type) -> value"}, |
| 1954 | {0} |
| 1955 | }; |
| 1956 | |
| 1957 | static PyObject * |
| 1958 | wrap_descrsetfunc(PyObject *self, PyObject *args, void *wrapped) |
| 1959 | { |
| 1960 | descrsetfunc func = (descrsetfunc)wrapped; |
| 1961 | PyObject *obj, *value; |
| 1962 | int ret; |
| 1963 | |
| 1964 | if (!PyArg_ParseTuple(args, "OO", &obj, &value)) |
| 1965 | return NULL; |
| 1966 | ret = (*func)(self, obj, value); |
| 1967 | if (ret < 0) |
| 1968 | return NULL; |
| 1969 | Py_INCREF(Py_None); |
| 1970 | return Py_None; |
| 1971 | } |
| 1972 | |
| 1973 | static struct wrapperbase tab_descr_set[] = { |
| 1974 | {"__set__", (wrapperfunc)wrap_descrsetfunc, |
| 1975 | "descr.__set__(obj, value)"}, |
| 1976 | {0} |
| 1977 | }; |
| 1978 | |
| 1979 | static PyObject * |
| 1980 | wrap_init(PyObject *self, PyObject *args, void *wrapped) |
| 1981 | { |
| 1982 | initproc func = (initproc)wrapped; |
| 1983 | |
| 1984 | /* XXX What about keyword arguments? */ |
| 1985 | if (func(self, args, NULL) < 0) |
| 1986 | return NULL; |
| 1987 | Py_INCREF(Py_None); |
| 1988 | return Py_None; |
| 1989 | } |
| 1990 | |
| 1991 | static struct wrapperbase tab_init[] = { |
| 1992 | {"__init__", (wrapperfunc)wrap_init, |
| 1993 | "x.__init__(...) initializes x; " |
| 1994 | "see x.__type__.__doc__ for signature"}, |
| 1995 | {0} |
| 1996 | }; |
| 1997 | |
| 1998 | static PyObject * |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 1999 | tp_new_wrapper(PyObject *self, PyObject *args, PyObject *kwds) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2000 | { |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 2001 | PyTypeObject *type, *subtype; |
| 2002 | PyObject *arg0, *res; |
| 2003 | |
| 2004 | if (self == NULL || !PyType_Check(self)) |
| 2005 | Py_FatalError("__new__() called with non-type 'self'"); |
| 2006 | type = (PyTypeObject *)self; |
| 2007 | if (!PyTuple_Check(args) || PyTuple_GET_SIZE(args) < 1) { |
| 2008 | PyErr_SetString(PyExc_TypeError, |
| 2009 | "T.__new__(): not enough arguments"); |
| 2010 | return NULL; |
| 2011 | } |
| 2012 | arg0 = PyTuple_GET_ITEM(args, 0); |
| 2013 | if (!PyType_Check(arg0)) { |
| 2014 | PyErr_SetString(PyExc_TypeError, |
| 2015 | "T.__new__(S): S is not a type object"); |
| 2016 | return NULL; |
| 2017 | } |
| 2018 | subtype = (PyTypeObject *)arg0; |
| 2019 | if (!PyType_IsSubtype(subtype, type)) { |
| 2020 | PyErr_SetString(PyExc_TypeError, |
| 2021 | "T.__new__(S): S is not a subtype of T"); |
| 2022 | return NULL; |
| 2023 | } |
| 2024 | args = PyTuple_GetSlice(args, 1, PyTuple_GET_SIZE(args)); |
| 2025 | if (args == NULL) |
| 2026 | return NULL; |
| 2027 | res = type->tp_new(subtype, args, kwds); |
| 2028 | Py_DECREF(args); |
| 2029 | return res; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2030 | } |
| 2031 | |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 2032 | static struct PyMethodDef tp_new_methoddef[] = { |
| 2033 | {"__new__", (PyCFunction)tp_new_wrapper, METH_KEYWORDS, |
| 2034 | "T.__new__(S, ...) -> a new object with type S, a subtype of T"}, |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2035 | {0} |
| 2036 | }; |
| 2037 | |
| 2038 | static int |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 2039 | add_tp_new_wrapper(PyTypeObject *type) |
| 2040 | { |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2041 | PyObject *func; |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 2042 | |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2043 | if (PyDict_GetItemString(type->tp_defined, "__new__") != NULL) |
| 2044 | return 0; |
| 2045 | func = PyCFunction_New(tp_new_methoddef, (PyObject *)type); |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 2046 | if (func == NULL) |
| 2047 | return -1; |
| 2048 | return PyDict_SetItemString(type->tp_defined, "__new__", func); |
| 2049 | } |
| 2050 | |
Guido van Rossum | 13d52f0 | 2001-08-10 21:24:08 +0000 | [diff] [blame] | 2051 | static int |
| 2052 | add_wrappers(PyTypeObject *type, struct wrapperbase *wraps, void *wrapped) |
| 2053 | { |
| 2054 | PyObject *dict = type->tp_defined; |
| 2055 | |
| 2056 | for (; wraps->name != NULL; wraps++) { |
| 2057 | PyObject *descr; |
| 2058 | if (PyDict_GetItemString(dict, wraps->name)) |
| 2059 | continue; |
| 2060 | descr = PyDescr_NewWrapper(type, wraps, wrapped); |
| 2061 | if (descr == NULL) |
| 2062 | return -1; |
| 2063 | if (PyDict_SetItemString(dict, wraps->name, descr) < 0) |
| 2064 | return -1; |
| 2065 | Py_DECREF(descr); |
| 2066 | } |
| 2067 | return 0; |
| 2068 | } |
| 2069 | |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 2070 | /* This function is called by PyType_Ready() to populate the type's |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2071 | dictionary with method descriptors for function slots. For each |
| 2072 | function slot (like tp_repr) that's defined in the type, one or |
| 2073 | more corresponding descriptors are added in the type's tp_defined |
| 2074 | dictionary under the appropriate name (like __repr__). Some |
| 2075 | function slots cause more than one descriptor to be added (for |
| 2076 | example, the nb_add slot adds both __add__ and __radd__ |
| 2077 | descriptors) and some function slots compete for the same |
| 2078 | descriptor (for example both sq_item and mp_subscript generate a |
| 2079 | __getitem__ descriptor). This only adds new descriptors and |
| 2080 | doesn't overwrite entries in tp_defined that were previously |
| 2081 | defined. The descriptors contain a reference to the C function |
| 2082 | they must call, so that it's safe if they are copied into a |
| 2083 | subtype's __dict__ and the subtype has a different C function in |
| 2084 | its slot -- calling the method defined by the descriptor will call |
| 2085 | the C function that was used to create it, rather than the C |
| 2086 | function present in the slot when it is called. (This is important |
| 2087 | because a subtype may have a C function in the slot that calls the |
| 2088 | method from the dictionary, and we want to avoid infinite recursion |
| 2089 | here.) */ |
| 2090 | |
Guido van Rossum | 0d231ed | 2001-08-06 16:50:37 +0000 | [diff] [blame] | 2091 | static int |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2092 | add_operators(PyTypeObject *type) |
| 2093 | { |
| 2094 | PySequenceMethods *sq; |
| 2095 | PyMappingMethods *mp; |
| 2096 | PyNumberMethods *nb; |
| 2097 | |
| 2098 | #undef ADD |
| 2099 | #define ADD(SLOT, TABLE) \ |
| 2100 | if (SLOT) { \ |
| 2101 | if (add_wrappers(type, TABLE, (void *)(SLOT)) < 0) \ |
| 2102 | return -1; \ |
| 2103 | } |
| 2104 | |
| 2105 | if ((sq = type->tp_as_sequence) != NULL) { |
| 2106 | ADD(sq->sq_length, tab_len); |
| 2107 | ADD(sq->sq_concat, tab_concat); |
| 2108 | ADD(sq->sq_repeat, tab_mul_int); |
| 2109 | ADD(sq->sq_item, tab_getitem_int); |
| 2110 | ADD(sq->sq_slice, tab_getslice); |
| 2111 | ADD(sq->sq_ass_item, tab_setitem_int); |
| 2112 | ADD(sq->sq_ass_slice, tab_setslice); |
| 2113 | ADD(sq->sq_contains, tab_contains); |
| 2114 | ADD(sq->sq_inplace_concat, tab_iadd); |
| 2115 | ADD(sq->sq_inplace_repeat, tab_imul_int); |
| 2116 | } |
| 2117 | |
| 2118 | if ((mp = type->tp_as_mapping) != NULL) { |
| 2119 | if (sq->sq_length == NULL) |
| 2120 | ADD(mp->mp_length, tab_len); |
| 2121 | ADD(mp->mp_subscript, tab_getitem); |
| 2122 | ADD(mp->mp_ass_subscript, tab_setitem); |
| 2123 | } |
| 2124 | |
| 2125 | /* We don't support "old-style numbers" because their binary |
| 2126 | operators require that both arguments have the same type; |
| 2127 | the wrappers here only work for new-style numbers. */ |
| 2128 | if ((type->tp_flags & Py_TPFLAGS_CHECKTYPES) && |
| 2129 | (nb = type->tp_as_number) != NULL) { |
| 2130 | ADD(nb->nb_add, tab_add); |
| 2131 | ADD(nb->nb_subtract, tab_sub); |
| 2132 | ADD(nb->nb_multiply, tab_mul); |
| 2133 | ADD(nb->nb_divide, tab_div); |
| 2134 | ADD(nb->nb_remainder, tab_mod); |
| 2135 | ADD(nb->nb_divmod, tab_divmod); |
| 2136 | ADD(nb->nb_power, tab_pow); |
| 2137 | ADD(nb->nb_negative, tab_neg); |
| 2138 | ADD(nb->nb_positive, tab_pos); |
| 2139 | ADD(nb->nb_absolute, tab_abs); |
| 2140 | ADD(nb->nb_nonzero, tab_nonzero); |
| 2141 | ADD(nb->nb_invert, tab_invert); |
| 2142 | ADD(nb->nb_lshift, tab_lshift); |
| 2143 | ADD(nb->nb_rshift, tab_rshift); |
| 2144 | ADD(nb->nb_and, tab_and); |
| 2145 | ADD(nb->nb_xor, tab_xor); |
| 2146 | ADD(nb->nb_or, tab_or); |
| 2147 | /* We don't support coerce() -- see above comment */ |
| 2148 | ADD(nb->nb_int, tab_int); |
| 2149 | ADD(nb->nb_long, tab_long); |
| 2150 | ADD(nb->nb_float, tab_float); |
| 2151 | ADD(nb->nb_oct, tab_oct); |
| 2152 | ADD(nb->nb_hex, tab_hex); |
| 2153 | ADD(nb->nb_inplace_add, tab_iadd); |
| 2154 | ADD(nb->nb_inplace_subtract, tab_isub); |
| 2155 | ADD(nb->nb_inplace_multiply, tab_imul); |
| 2156 | ADD(nb->nb_inplace_divide, tab_idiv); |
| 2157 | ADD(nb->nb_inplace_remainder, tab_imod); |
| 2158 | ADD(nb->nb_inplace_power, tab_ipow); |
| 2159 | ADD(nb->nb_inplace_lshift, tab_ilshift); |
| 2160 | ADD(nb->nb_inplace_rshift, tab_irshift); |
| 2161 | ADD(nb->nb_inplace_and, tab_iand); |
| 2162 | ADD(nb->nb_inplace_xor, tab_ixor); |
| 2163 | ADD(nb->nb_inplace_or, tab_ior); |
| 2164 | } |
| 2165 | |
| 2166 | ADD(type->tp_getattro, tab_getattr); |
| 2167 | ADD(type->tp_setattro, tab_setattr); |
| 2168 | ADD(type->tp_compare, tab_cmp); |
| 2169 | ADD(type->tp_repr, tab_repr); |
| 2170 | ADD(type->tp_hash, tab_hash); |
| 2171 | ADD(type->tp_call, tab_call); |
| 2172 | ADD(type->tp_str, tab_str); |
| 2173 | ADD(type->tp_richcompare, tab_richcmp); |
| 2174 | ADD(type->tp_iter, tab_iter); |
| 2175 | ADD(type->tp_iternext, tab_next); |
| 2176 | ADD(type->tp_descr_get, tab_descr_get); |
| 2177 | ADD(type->tp_descr_set, tab_descr_set); |
| 2178 | ADD(type->tp_init, tab_init); |
| 2179 | |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2180 | if (type->tp_new != NULL) { |
| 2181 | if (add_tp_new_wrapper(type) < 0) |
| 2182 | return -1; |
| 2183 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2184 | |
| 2185 | return 0; |
| 2186 | } |
| 2187 | |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2188 | /* Slot wrappers that call the corresponding __foo__ slot. See comments |
| 2189 | below at override_slots() for more explanation. */ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2190 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2191 | #define SLOT0(FUNCNAME, OPSTR) \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2192 | static PyObject * \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2193 | FUNCNAME(PyObject *self) \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2194 | { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2195 | return PyObject_CallMethod(self, OPSTR, ""); \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2196 | } |
| 2197 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2198 | #define SLOT1(FUNCNAME, OPSTR, ARG1TYPE, ARGCODES) \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2199 | static PyObject * \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2200 | FUNCNAME(PyObject *self, ARG1TYPE arg1) \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2201 | { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2202 | return PyObject_CallMethod(self, OPSTR, ARGCODES, arg1); \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2203 | } |
| 2204 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2205 | |
| 2206 | #define SLOT1BINFULL(FUNCNAME, TESTFUNC, SLOTNAME, OPSTR, ROPSTR) \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2207 | static PyObject * \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2208 | FUNCNAME(PyObject *self, PyObject *other) \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2209 | { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2210 | if (self->ob_type->tp_as_number != NULL && \ |
| 2211 | self->ob_type->tp_as_number->SLOTNAME == TESTFUNC) { \ |
| 2212 | PyObject *r; \ |
| 2213 | r = PyObject_CallMethod( \ |
| 2214 | self, OPSTR, "O", other); \ |
| 2215 | if (r != Py_NotImplemented || \ |
| 2216 | other->ob_type == self->ob_type) \ |
| 2217 | return r; \ |
| 2218 | Py_DECREF(r); \ |
| 2219 | } \ |
| 2220 | if (other->ob_type->tp_as_number != NULL && \ |
| 2221 | other->ob_type->tp_as_number->SLOTNAME == TESTFUNC) { \ |
| 2222 | return PyObject_CallMethod( \ |
| 2223 | other, ROPSTR, "O", self); \ |
| 2224 | } \ |
| 2225 | Py_INCREF(Py_NotImplemented); \ |
| 2226 | return Py_NotImplemented; \ |
| 2227 | } |
| 2228 | |
| 2229 | #define SLOT1BIN(FUNCNAME, SLOTNAME, OPSTR, ROPSTR) \ |
| 2230 | SLOT1BINFULL(FUNCNAME, FUNCNAME, SLOTNAME, OPSTR, ROPSTR) |
| 2231 | |
| 2232 | #define SLOT2(FUNCNAME, OPSTR, ARG1TYPE, ARG2TYPE, ARGCODES) \ |
| 2233 | static PyObject * \ |
| 2234 | FUNCNAME(PyObject *self, ARG1TYPE arg1, ARG2TYPE arg2) \ |
| 2235 | { \ |
| 2236 | return PyObject_CallMethod(self, OPSTR, ARGCODES, arg1, arg2); \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2237 | } |
| 2238 | |
| 2239 | static int |
| 2240 | slot_sq_length(PyObject *self) |
| 2241 | { |
| 2242 | PyObject *res = PyObject_CallMethod(self, "__len__", ""); |
| 2243 | |
| 2244 | if (res == NULL) |
| 2245 | return -1; |
| 2246 | return (int)PyInt_AsLong(res); |
| 2247 | } |
| 2248 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2249 | SLOT1(slot_sq_concat, "__add__", PyObject *, "O") |
| 2250 | SLOT1(slot_sq_repeat, "__mul__", int, "i") |
| 2251 | SLOT1(slot_sq_item, "__getitem__", int, "i") |
| 2252 | SLOT2(slot_sq_slice, "__getslice__", int, int, "ii") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2253 | |
| 2254 | static int |
| 2255 | slot_sq_ass_item(PyObject *self, int index, PyObject *value) |
| 2256 | { |
| 2257 | PyObject *res; |
| 2258 | |
| 2259 | if (value == NULL) |
| 2260 | res = PyObject_CallMethod(self, "__delitem__", "i", index); |
| 2261 | else |
| 2262 | res = PyObject_CallMethod(self, "__setitem__", |
| 2263 | "iO", index, value); |
| 2264 | if (res == NULL) |
| 2265 | return -1; |
| 2266 | Py_DECREF(res); |
| 2267 | return 0; |
| 2268 | } |
| 2269 | |
| 2270 | static int |
| 2271 | slot_sq_ass_slice(PyObject *self, int i, int j, PyObject *value) |
| 2272 | { |
| 2273 | PyObject *res; |
| 2274 | |
| 2275 | if (value == NULL) |
| 2276 | res = PyObject_CallMethod(self, "__delslice__", "ii", i, j); |
| 2277 | else |
| 2278 | res = PyObject_CallMethod(self, "__setslice__", |
| 2279 | "iiO", i, j, value); |
| 2280 | if (res == NULL) |
| 2281 | return -1; |
| 2282 | Py_DECREF(res); |
| 2283 | return 0; |
| 2284 | } |
| 2285 | |
| 2286 | static int |
| 2287 | slot_sq_contains(PyObject *self, PyObject *value) |
| 2288 | { |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2289 | PyObject *func, *res, *args; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2290 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2291 | func = PyObject_GetAttrString(self, "__contains__"); |
| 2292 | |
| 2293 | if (func != NULL) { |
| 2294 | args = Py_BuildValue("(O)", value); |
| 2295 | if (args == NULL) |
| 2296 | res = NULL; |
| 2297 | else { |
| 2298 | res = PyEval_CallObject(func, args); |
| 2299 | Py_DECREF(args); |
| 2300 | } |
| 2301 | Py_DECREF(func); |
| 2302 | if (res == NULL) |
| 2303 | return -1; |
| 2304 | return PyObject_IsTrue(res); |
| 2305 | } |
| 2306 | else { |
| 2307 | PyErr_Clear(); |
| 2308 | return _PySequence_IterContains(self, value); |
| 2309 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2310 | } |
| 2311 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2312 | SLOT1(slot_sq_inplace_concat, "__iadd__", PyObject *, "O") |
| 2313 | SLOT1(slot_sq_inplace_repeat, "__imul__", int, "i") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2314 | |
| 2315 | #define slot_mp_length slot_sq_length |
| 2316 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2317 | SLOT1(slot_mp_subscript, "__getitem__", PyObject *, "O") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2318 | |
| 2319 | static int |
| 2320 | slot_mp_ass_subscript(PyObject *self, PyObject *key, PyObject *value) |
| 2321 | { |
| 2322 | PyObject *res; |
| 2323 | |
| 2324 | if (value == NULL) |
| 2325 | res = PyObject_CallMethod(self, "__delitem__", "O", key); |
| 2326 | else |
| 2327 | res = PyObject_CallMethod(self, "__setitem__", |
| 2328 | "OO", key, value); |
| 2329 | if (res == NULL) |
| 2330 | return -1; |
| 2331 | Py_DECREF(res); |
| 2332 | return 0; |
| 2333 | } |
| 2334 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2335 | SLOT1BIN(slot_nb_add, nb_add, "__add__", "__radd__") |
| 2336 | SLOT1BIN(slot_nb_subtract, nb_subtract, "__sub__", "__rsub__") |
| 2337 | SLOT1BIN(slot_nb_multiply, nb_multiply, "__mul__", "__rmul__") |
| 2338 | SLOT1BIN(slot_nb_divide, nb_divide, "__div__", "__rdiv__") |
| 2339 | SLOT1BIN(slot_nb_remainder, nb_remainder, "__mod__", "__rmod__") |
| 2340 | SLOT1BIN(slot_nb_divmod, nb_divmod, "__divmod__", "__rdivmod__") |
| 2341 | |
| 2342 | staticforward PyObject *slot_nb_power(PyObject *, PyObject *, PyObject *); |
| 2343 | |
| 2344 | SLOT1BINFULL(slot_nb_power_binary, slot_nb_power, |
| 2345 | nb_power, "__pow__", "__rpow__") |
| 2346 | |
| 2347 | static PyObject * |
| 2348 | slot_nb_power(PyObject *self, PyObject *other, PyObject *modulus) |
| 2349 | { |
| 2350 | if (modulus == Py_None) |
| 2351 | return slot_nb_power_binary(self, other); |
| 2352 | /* Three-arg power doesn't use __rpow__ */ |
| 2353 | return PyObject_CallMethod(self, "__pow__", "OO", other, modulus); |
| 2354 | } |
| 2355 | |
| 2356 | SLOT0(slot_nb_negative, "__neg__") |
| 2357 | SLOT0(slot_nb_positive, "__pos__") |
| 2358 | SLOT0(slot_nb_absolute, "__abs__") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2359 | |
| 2360 | static int |
| 2361 | slot_nb_nonzero(PyObject *self) |
| 2362 | { |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2363 | PyObject *func, *res; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2364 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2365 | func = PyObject_GetAttrString(self, "__nonzero__"); |
| 2366 | if (func == NULL) { |
| 2367 | PyErr_Clear(); |
| 2368 | func = PyObject_GetAttrString(self, "__len__"); |
| 2369 | } |
| 2370 | |
| 2371 | if (func != NULL) { |
| 2372 | res = PyEval_CallObject(func, NULL); |
| 2373 | Py_DECREF(func); |
| 2374 | if (res == NULL) |
| 2375 | return -1; |
| 2376 | return PyObject_IsTrue(res); |
| 2377 | } |
| 2378 | else { |
| 2379 | PyErr_Clear(); |
| 2380 | return 1; |
| 2381 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2382 | } |
| 2383 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2384 | SLOT0(slot_nb_invert, "__invert__") |
| 2385 | SLOT1BIN(slot_nb_lshift, nb_lshift, "__lshift__", "__rlshift__") |
| 2386 | SLOT1BIN(slot_nb_rshift, nb_rshift, "__rshift__", "__rrshift__") |
| 2387 | SLOT1BIN(slot_nb_and, nb_and, "__and__", "__rand__") |
| 2388 | SLOT1BIN(slot_nb_xor, nb_xor, "__xor__", "__rxor__") |
| 2389 | SLOT1BIN(slot_nb_or, nb_or, "__or__", "__ror__") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2390 | /* Not coerce() */ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2391 | SLOT0(slot_nb_int, "__int__") |
| 2392 | SLOT0(slot_nb_long, "__long__") |
| 2393 | SLOT0(slot_nb_float, "__float__") |
| 2394 | SLOT0(slot_nb_oct, "__oct__") |
| 2395 | SLOT0(slot_nb_hex, "__hex__") |
| 2396 | SLOT1(slot_nb_inplace_add, "__iadd__", PyObject *, "O") |
| 2397 | SLOT1(slot_nb_inplace_subtract, "__isub__", PyObject *, "O") |
| 2398 | SLOT1(slot_nb_inplace_multiply, "__imul__", PyObject *, "O") |
| 2399 | SLOT1(slot_nb_inplace_divide, "__idiv__", PyObject *, "O") |
| 2400 | SLOT1(slot_nb_inplace_remainder, "__imod__", PyObject *, "O") |
| 2401 | SLOT2(slot_nb_inplace_power, "__ipow__", PyObject *, PyObject *, "OO") |
| 2402 | SLOT1(slot_nb_inplace_lshift, "__ilshift__", PyObject *, "O") |
| 2403 | SLOT1(slot_nb_inplace_rshift, "__irshift__", PyObject *, "O") |
| 2404 | SLOT1(slot_nb_inplace_and, "__iand__", PyObject *, "O") |
| 2405 | SLOT1(slot_nb_inplace_xor, "__ixor__", PyObject *, "O") |
| 2406 | SLOT1(slot_nb_inplace_or, "__ior__", PyObject *, "O") |
| 2407 | SLOT1BIN(slot_nb_floor_divide, nb_floor_divide, |
| 2408 | "__floordiv__", "__rfloordiv__") |
| 2409 | SLOT1BIN(slot_nb_true_divide, nb_true_divide, "__truediv__", "__rtruediv__") |
| 2410 | SLOT1(slot_nb_inplace_floor_divide, "__ifloordiv__", PyObject *, "O") |
| 2411 | SLOT1(slot_nb_inplace_true_divide, "__itruediv__", PyObject *, "O") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2412 | |
| 2413 | static int |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2414 | half_compare(PyObject *self, PyObject *other) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2415 | { |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2416 | PyObject *func, *args, *res; |
| 2417 | int c; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2418 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2419 | func = PyObject_GetAttrString(self, "__cmp__"); |
| 2420 | if (func == NULL) { |
| 2421 | PyErr_Clear(); |
| 2422 | } |
| 2423 | else { |
| 2424 | args = Py_BuildValue("(O)", other); |
| 2425 | if (args == NULL) |
| 2426 | res = NULL; |
| 2427 | else { |
| 2428 | res = PyObject_CallObject(func, args); |
| 2429 | Py_DECREF(args); |
| 2430 | } |
| 2431 | if (res != Py_NotImplemented) { |
| 2432 | if (res == NULL) |
| 2433 | return -2; |
| 2434 | c = PyInt_AsLong(res); |
| 2435 | Py_DECREF(res); |
| 2436 | if (c == -1 && PyErr_Occurred()) |
| 2437 | return -2; |
| 2438 | return (c < 0) ? -1 : (c > 0) ? 1 : 0; |
| 2439 | } |
| 2440 | Py_DECREF(res); |
| 2441 | } |
| 2442 | return 2; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2443 | } |
| 2444 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2445 | static int |
| 2446 | slot_tp_compare(PyObject *self, PyObject *other) |
| 2447 | { |
| 2448 | int c; |
| 2449 | |
| 2450 | if (self->ob_type->tp_compare == slot_tp_compare) { |
| 2451 | c = half_compare(self, other); |
| 2452 | if (c <= 1) |
| 2453 | return c; |
| 2454 | } |
| 2455 | if (other->ob_type->tp_compare == slot_tp_compare) { |
| 2456 | c = half_compare(other, self); |
| 2457 | if (c < -1) |
| 2458 | return -2; |
| 2459 | if (c <= 1) |
| 2460 | return -c; |
| 2461 | } |
| 2462 | return (void *)self < (void *)other ? -1 : |
| 2463 | (void *)self > (void *)other ? 1 : 0; |
| 2464 | } |
| 2465 | |
| 2466 | static PyObject * |
| 2467 | slot_tp_repr(PyObject *self) |
| 2468 | { |
| 2469 | PyObject *func, *res; |
| 2470 | |
| 2471 | func = PyObject_GetAttrString(self, "__repr__"); |
| 2472 | if (func != NULL) { |
| 2473 | res = PyEval_CallObject(func, NULL); |
| 2474 | Py_DECREF(func); |
| 2475 | return res; |
| 2476 | } |
| 2477 | else { |
| 2478 | char buf[120]; |
| 2479 | PyErr_Clear(); |
| 2480 | sprintf(buf, "<%.80s object at %p>", |
| 2481 | self->ob_type->tp_name, self); |
| 2482 | return PyString_FromString(buf); |
| 2483 | } |
| 2484 | } |
| 2485 | |
| 2486 | static PyObject * |
| 2487 | slot_tp_str(PyObject *self) |
| 2488 | { |
| 2489 | PyObject *func, *res; |
| 2490 | |
| 2491 | func = PyObject_GetAttrString(self, "__str__"); |
| 2492 | if (func != NULL) { |
| 2493 | res = PyEval_CallObject(func, NULL); |
| 2494 | Py_DECREF(func); |
| 2495 | return res; |
| 2496 | } |
| 2497 | else { |
| 2498 | PyErr_Clear(); |
| 2499 | return slot_tp_repr(self); |
| 2500 | } |
| 2501 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2502 | |
| 2503 | static long |
| 2504 | slot_tp_hash(PyObject *self) |
| 2505 | { |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2506 | PyObject *func, *res; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2507 | long h; |
| 2508 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2509 | func = PyObject_GetAttrString(self, "__hash__"); |
| 2510 | |
| 2511 | if (func != NULL) { |
| 2512 | res = PyEval_CallObject(func, NULL); |
| 2513 | Py_DECREF(func); |
| 2514 | if (res == NULL) |
| 2515 | return -1; |
| 2516 | h = PyInt_AsLong(res); |
| 2517 | } |
| 2518 | else { |
| 2519 | PyErr_Clear(); |
| 2520 | func = PyObject_GetAttrString(self, "__eq__"); |
| 2521 | if (func == NULL) { |
| 2522 | PyErr_Clear(); |
| 2523 | func = PyObject_GetAttrString(self, "__cmp__"); |
| 2524 | } |
| 2525 | if (func != NULL) { |
| 2526 | Py_DECREF(func); |
| 2527 | PyErr_SetString(PyExc_TypeError, "unhashable type"); |
| 2528 | return -1; |
| 2529 | } |
| 2530 | PyErr_Clear(); |
| 2531 | h = _Py_HashPointer((void *)self); |
| 2532 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2533 | if (h == -1 && !PyErr_Occurred()) |
| 2534 | h = -2; |
| 2535 | return h; |
| 2536 | } |
| 2537 | |
| 2538 | static PyObject * |
| 2539 | slot_tp_call(PyObject *self, PyObject *args, PyObject *kwds) |
| 2540 | { |
| 2541 | PyObject *meth = PyObject_GetAttrString(self, "__call__"); |
| 2542 | PyObject *res; |
| 2543 | |
| 2544 | if (meth == NULL) |
| 2545 | return NULL; |
| 2546 | res = PyObject_Call(meth, args, kwds); |
| 2547 | Py_DECREF(meth); |
| 2548 | return res; |
| 2549 | } |
| 2550 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2551 | static PyObject * |
| 2552 | slot_tp_getattro(PyObject *self, PyObject *name) |
| 2553 | { |
| 2554 | PyTypeObject *tp = self->ob_type; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2555 | PyObject *getattr; |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2556 | static PyObject *getattr_str = NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2557 | |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2558 | if (getattr_str == NULL) { |
| 2559 | getattr_str = PyString_InternFromString("__getattr__"); |
| 2560 | if (getattr_str == NULL) |
| 2561 | return NULL; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2562 | } |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2563 | getattr = _PyType_Lookup(tp, getattr_str); |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 2564 | if (getattr == NULL) { |
| 2565 | /* Avoid further slowdowns */ |
| 2566 | if (tp->tp_getattro == slot_tp_getattro) |
| 2567 | tp->tp_getattro = PyObject_GenericGetAttr; |
| 2568 | else |
| 2569 | fprintf(stderr, "huh?\n"); |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2570 | return PyObject_GenericGetAttr(self, name); |
Guido van Rossum | c354221 | 2001-08-16 09:18:56 +0000 | [diff] [blame] | 2571 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2572 | return PyObject_CallFunction(getattr, "OO", self, name); |
| 2573 | } |
| 2574 | |
| 2575 | static int |
| 2576 | slot_tp_setattro(PyObject *self, PyObject *name, PyObject *value) |
| 2577 | { |
| 2578 | PyObject *res; |
| 2579 | |
| 2580 | if (value == NULL) |
| 2581 | res = PyObject_CallMethod(self, "__delattr__", "O", name); |
| 2582 | else |
| 2583 | res = PyObject_CallMethod(self, "__setattr__", |
| 2584 | "OO", name, value); |
| 2585 | if (res == NULL) |
| 2586 | return -1; |
| 2587 | Py_DECREF(res); |
| 2588 | return 0; |
| 2589 | } |
| 2590 | |
| 2591 | /* Map rich comparison operators to their __xx__ namesakes */ |
| 2592 | static char *name_op[] = { |
| 2593 | "__lt__", |
| 2594 | "__le__", |
| 2595 | "__eq__", |
| 2596 | "__ne__", |
| 2597 | "__gt__", |
| 2598 | "__ge__", |
| 2599 | }; |
| 2600 | |
| 2601 | static PyObject * |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2602 | half_richcompare(PyObject *self, PyObject *other, int op) |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2603 | { |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2604 | PyObject *func, *args, *res; |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2605 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2606 | func = PyObject_GetAttrString(self, name_op[op]); |
| 2607 | if (func == NULL) { |
| 2608 | PyErr_Clear(); |
| 2609 | Py_INCREF(Py_NotImplemented); |
| 2610 | return Py_NotImplemented; |
| 2611 | } |
| 2612 | args = Py_BuildValue("(O)", other); |
| 2613 | if (args == NULL) |
| 2614 | res = NULL; |
| 2615 | else { |
| 2616 | res = PyObject_CallObject(func, args); |
| 2617 | Py_DECREF(args); |
| 2618 | } |
| 2619 | Py_DECREF(func); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2620 | return res; |
| 2621 | } |
| 2622 | |
Guido van Rossum | b8f6366 | 2001-08-15 23:57:02 +0000 | [diff] [blame] | 2623 | /* Map rich comparison operators to their swapped version, e.g. LT --> GT */ |
| 2624 | static int swapped_op[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE}; |
| 2625 | |
| 2626 | static PyObject * |
| 2627 | slot_tp_richcompare(PyObject *self, PyObject *other, int op) |
| 2628 | { |
| 2629 | PyObject *res; |
| 2630 | |
| 2631 | if (self->ob_type->tp_richcompare == slot_tp_richcompare) { |
| 2632 | res = half_richcompare(self, other, op); |
| 2633 | if (res != Py_NotImplemented) |
| 2634 | return res; |
| 2635 | Py_DECREF(res); |
| 2636 | } |
| 2637 | if (other->ob_type->tp_richcompare == slot_tp_richcompare) { |
| 2638 | res = half_richcompare(other, self, swapped_op[op]); |
| 2639 | if (res != Py_NotImplemented) { |
| 2640 | return res; |
| 2641 | } |
| 2642 | Py_DECREF(res); |
| 2643 | } |
| 2644 | Py_INCREF(Py_NotImplemented); |
| 2645 | return Py_NotImplemented; |
| 2646 | } |
| 2647 | |
| 2648 | static PyObject * |
| 2649 | slot_tp_iter(PyObject *self) |
| 2650 | { |
| 2651 | PyObject *func, *res; |
| 2652 | |
| 2653 | func = PyObject_GetAttrString(self, "__iter__"); |
| 2654 | if (func != NULL) { |
| 2655 | res = PyObject_CallObject(func, NULL); |
| 2656 | Py_DECREF(func); |
| 2657 | return res; |
| 2658 | } |
| 2659 | PyErr_Clear(); |
| 2660 | func = PyObject_GetAttrString(self, "__getitem__"); |
| 2661 | if (func == NULL) { |
| 2662 | PyErr_SetString(PyExc_TypeError, "iter() of non-sequence"); |
| 2663 | return NULL; |
| 2664 | } |
| 2665 | Py_DECREF(func); |
| 2666 | return PySeqIter_New(self); |
| 2667 | } |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2668 | |
| 2669 | static PyObject * |
| 2670 | slot_tp_iternext(PyObject *self) |
| 2671 | { |
| 2672 | return PyObject_CallMethod(self, "next", ""); |
| 2673 | } |
| 2674 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2675 | SLOT2(slot_tp_descr_get, "__get__", PyObject *, PyObject *, "OO") |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2676 | |
| 2677 | static int |
| 2678 | slot_tp_descr_set(PyObject *self, PyObject *target, PyObject *value) |
| 2679 | { |
| 2680 | PyObject *res = PyObject_CallMethod(self, "__set__", |
| 2681 | "OO", target, value); |
| 2682 | if (res == NULL) |
| 2683 | return -1; |
| 2684 | Py_DECREF(res); |
| 2685 | return 0; |
| 2686 | } |
| 2687 | |
| 2688 | static int |
| 2689 | slot_tp_init(PyObject *self, PyObject *args, PyObject *kwds) |
| 2690 | { |
| 2691 | PyObject *meth = PyObject_GetAttrString(self, "__init__"); |
| 2692 | PyObject *res; |
| 2693 | |
| 2694 | if (meth == NULL) |
| 2695 | return -1; |
| 2696 | res = PyObject_Call(meth, args, kwds); |
| 2697 | Py_DECREF(meth); |
| 2698 | if (res == NULL) |
| 2699 | return -1; |
| 2700 | Py_DECREF(res); |
| 2701 | return 0; |
| 2702 | } |
| 2703 | |
| 2704 | static PyObject * |
| 2705 | slot_tp_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 2706 | { |
| 2707 | PyObject *func = PyObject_GetAttrString((PyObject *)type, "__new__"); |
| 2708 | PyObject *newargs, *x; |
| 2709 | int i, n; |
| 2710 | |
| 2711 | if (func == NULL) |
| 2712 | return NULL; |
| 2713 | assert(PyTuple_Check(args)); |
| 2714 | n = PyTuple_GET_SIZE(args); |
| 2715 | newargs = PyTuple_New(n+1); |
| 2716 | if (newargs == NULL) |
| 2717 | return NULL; |
| 2718 | Py_INCREF(type); |
| 2719 | PyTuple_SET_ITEM(newargs, 0, (PyObject *)type); |
| 2720 | for (i = 0; i < n; i++) { |
| 2721 | x = PyTuple_GET_ITEM(args, i); |
| 2722 | Py_INCREF(x); |
| 2723 | PyTuple_SET_ITEM(newargs, i+1, x); |
| 2724 | } |
| 2725 | x = PyObject_Call(func, newargs, kwds); |
| 2726 | Py_DECREF(func); |
| 2727 | return x; |
| 2728 | } |
| 2729 | |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2730 | /* This is called at the very end of type_new() (even after |
Guido van Rossum | 528b7eb | 2001-08-07 17:24:28 +0000 | [diff] [blame] | 2731 | PyType_Ready()) to complete the initialization of dynamic types. |
Guido van Rossum | f040ede | 2001-08-07 16:40:56 +0000 | [diff] [blame] | 2732 | The dict argument is the dictionary argument passed to type_new(), |
| 2733 | which is the local namespace of the class statement, in other |
| 2734 | words, it contains the methods. For each special method (like |
| 2735 | __repr__) defined in the dictionary, the corresponding function |
| 2736 | slot in the type object (like tp_repr) is set to a special function |
| 2737 | whose name is 'slot_' followed by the slot name and whose signature |
| 2738 | is whatever is required for that slot. These slot functions look |
| 2739 | up the corresponding method in the type's dictionary and call it. |
| 2740 | The slot functions have to take care of the various peculiarities |
| 2741 | of the mapping between slots and special methods, such as mapping |
| 2742 | one slot to multiple methods (tp_richcompare <--> __le__, __lt__ |
| 2743 | etc.) or mapping multiple slots to a single method (sq_item, |
| 2744 | mp_subscript <--> __getitem__). */ |
| 2745 | |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2746 | static void |
| 2747 | override_slots(PyTypeObject *type, PyObject *dict) |
| 2748 | { |
| 2749 | PySequenceMethods *sq = type->tp_as_sequence; |
| 2750 | PyMappingMethods *mp = type->tp_as_mapping; |
| 2751 | PyNumberMethods *nb = type->tp_as_number; |
| 2752 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2753 | #define SQSLOT(OPNAME, SLOTNAME, FUNCNAME) \ |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2754 | if (dict == NULL || PyDict_GetItemString(dict, OPNAME)) { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2755 | sq->SLOTNAME = FUNCNAME; \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2756 | } |
| 2757 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2758 | #define MPSLOT(OPNAME, SLOTNAME, FUNCNAME) \ |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2759 | if (dict == NULL || PyDict_GetItemString(dict, OPNAME)) { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2760 | mp->SLOTNAME = FUNCNAME; \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2761 | } |
| 2762 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2763 | #define NBSLOT(OPNAME, SLOTNAME, FUNCNAME) \ |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2764 | if (dict == NULL || PyDict_GetItemString(dict, OPNAME)) { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2765 | nb->SLOTNAME = FUNCNAME; \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2766 | } |
| 2767 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2768 | #define TPSLOT(OPNAME, SLOTNAME, FUNCNAME) \ |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2769 | if (dict == NULL || PyDict_GetItemString(dict, OPNAME)) { \ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2770 | type->SLOTNAME = FUNCNAME; \ |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2771 | } |
| 2772 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2773 | SQSLOT("__len__", sq_length, slot_sq_length); |
| 2774 | SQSLOT("__add__", sq_concat, slot_sq_concat); |
| 2775 | SQSLOT("__mul__", sq_repeat, slot_sq_repeat); |
| 2776 | SQSLOT("__getitem__", sq_item, slot_sq_item); |
| 2777 | SQSLOT("__getslice__", sq_slice, slot_sq_slice); |
| 2778 | SQSLOT("__setitem__", sq_ass_item, slot_sq_ass_item); |
| 2779 | SQSLOT("__delitem__", sq_ass_item, slot_sq_ass_item); |
| 2780 | SQSLOT("__setslice__", sq_ass_slice, slot_sq_ass_slice); |
| 2781 | SQSLOT("__delslice__", sq_ass_slice, slot_sq_ass_slice); |
| 2782 | SQSLOT("__contains__", sq_contains, slot_sq_contains); |
| 2783 | SQSLOT("__iadd__", sq_inplace_concat, slot_sq_inplace_concat); |
| 2784 | SQSLOT("__imul__", sq_inplace_repeat, slot_sq_inplace_repeat); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2785 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2786 | MPSLOT("__len__", mp_length, slot_mp_length); |
| 2787 | MPSLOT("__getitem__", mp_subscript, slot_mp_subscript); |
| 2788 | MPSLOT("__setitem__", mp_ass_subscript, slot_mp_ass_subscript); |
| 2789 | MPSLOT("__delitem__", mp_ass_subscript, slot_mp_ass_subscript); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2790 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2791 | NBSLOT("__add__", nb_add, slot_nb_add); |
| 2792 | NBSLOT("__sub__", nb_subtract, slot_nb_subtract); |
| 2793 | NBSLOT("__mul__", nb_multiply, slot_nb_multiply); |
| 2794 | NBSLOT("__div__", nb_divide, slot_nb_divide); |
| 2795 | NBSLOT("__mod__", nb_remainder, slot_nb_remainder); |
| 2796 | NBSLOT("__divmod__", nb_divmod, slot_nb_divmod); |
| 2797 | NBSLOT("__pow__", nb_power, slot_nb_power); |
| 2798 | NBSLOT("__neg__", nb_negative, slot_nb_negative); |
| 2799 | NBSLOT("__pos__", nb_positive, slot_nb_positive); |
| 2800 | NBSLOT("__abs__", nb_absolute, slot_nb_absolute); |
| 2801 | NBSLOT("__nonzero__", nb_nonzero, slot_nb_nonzero); |
| 2802 | NBSLOT("__invert__", nb_invert, slot_nb_invert); |
| 2803 | NBSLOT("__lshift__", nb_lshift, slot_nb_lshift); |
| 2804 | NBSLOT("__rshift__", nb_rshift, slot_nb_rshift); |
| 2805 | NBSLOT("__and__", nb_and, slot_nb_and); |
| 2806 | NBSLOT("__xor__", nb_xor, slot_nb_xor); |
| 2807 | NBSLOT("__or__", nb_or, slot_nb_or); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2808 | /* Not coerce() */ |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2809 | NBSLOT("__int__", nb_int, slot_nb_int); |
| 2810 | NBSLOT("__long__", nb_long, slot_nb_long); |
| 2811 | NBSLOT("__float__", nb_float, slot_nb_float); |
| 2812 | NBSLOT("__oct__", nb_oct, slot_nb_oct); |
| 2813 | NBSLOT("__hex__", nb_hex, slot_nb_hex); |
| 2814 | NBSLOT("__iadd__", nb_inplace_add, slot_nb_inplace_add); |
| 2815 | NBSLOT("__isub__", nb_inplace_subtract, slot_nb_inplace_subtract); |
| 2816 | NBSLOT("__imul__", nb_inplace_multiply, slot_nb_inplace_multiply); |
| 2817 | NBSLOT("__idiv__", nb_inplace_divide, slot_nb_inplace_divide); |
| 2818 | NBSLOT("__imod__", nb_inplace_remainder, slot_nb_inplace_remainder); |
| 2819 | NBSLOT("__ipow__", nb_inplace_power, slot_nb_inplace_power); |
| 2820 | NBSLOT("__ilshift__", nb_inplace_lshift, slot_nb_inplace_lshift); |
| 2821 | NBSLOT("__irshift__", nb_inplace_rshift, slot_nb_inplace_rshift); |
| 2822 | NBSLOT("__iand__", nb_inplace_and, slot_nb_inplace_and); |
| 2823 | NBSLOT("__ixor__", nb_inplace_xor, slot_nb_inplace_xor); |
| 2824 | NBSLOT("__ior__", nb_inplace_or, slot_nb_inplace_or); |
| 2825 | NBSLOT("__floordiv__", nb_floor_divide, slot_nb_floor_divide); |
| 2826 | NBSLOT("__truediv__", nb_true_divide, slot_nb_true_divide); |
| 2827 | NBSLOT("__ifloordiv__", nb_inplace_floor_divide, |
| 2828 | slot_nb_inplace_floor_divide); |
| 2829 | NBSLOT("__itruediv__", nb_inplace_true_divide, |
| 2830 | slot_nb_inplace_true_divide); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2831 | |
Guido van Rossum | 8e24818 | 2001-08-12 05:17:56 +0000 | [diff] [blame] | 2832 | if (dict == NULL || |
| 2833 | PyDict_GetItemString(dict, "__str__") || |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2834 | PyDict_GetItemString(dict, "__repr__")) |
| 2835 | type->tp_print = NULL; |
| 2836 | |
Guido van Rossum | dc91b99 | 2001-08-08 22:26:22 +0000 | [diff] [blame] | 2837 | TPSLOT("__cmp__", tp_compare, slot_tp_compare); |
| 2838 | TPSLOT("__repr__", tp_repr, slot_tp_repr); |
| 2839 | TPSLOT("__hash__", tp_hash, slot_tp_hash); |
| 2840 | TPSLOT("__call__", tp_call, slot_tp_call); |
| 2841 | TPSLOT("__str__", tp_str, slot_tp_str); |
| 2842 | TPSLOT("__getattr__", tp_getattro, slot_tp_getattro); |
| 2843 | TPSLOT("__setattr__", tp_setattro, slot_tp_setattro); |
| 2844 | TPSLOT("__lt__", tp_richcompare, slot_tp_richcompare); |
| 2845 | TPSLOT("__le__", tp_richcompare, slot_tp_richcompare); |
| 2846 | TPSLOT("__eq__", tp_richcompare, slot_tp_richcompare); |
| 2847 | TPSLOT("__ne__", tp_richcompare, slot_tp_richcompare); |
| 2848 | TPSLOT("__gt__", tp_richcompare, slot_tp_richcompare); |
| 2849 | TPSLOT("__ge__", tp_richcompare, slot_tp_richcompare); |
| 2850 | TPSLOT("__iter__", tp_iter, slot_tp_iter); |
| 2851 | TPSLOT("next", tp_iternext, slot_tp_iternext); |
| 2852 | TPSLOT("__get__", tp_descr_get, slot_tp_descr_get); |
| 2853 | TPSLOT("__set__", tp_descr_set, slot_tp_descr_set); |
| 2854 | TPSLOT("__init__", tp_init, slot_tp_init); |
| 2855 | TPSLOT("__new__", tp_new, slot_tp_new); |
Tim Peters | 6d6c1a3 | 2001-08-02 04:15:00 +0000 | [diff] [blame] | 2856 | } |