Commit | Line | Data |
---|---|---|
11cb3d97 MW |
1 | /* -*-c-*- |
2 | * | |
3 | * $Id$ | |
4 | * | |
5 | * Miscellaneous utilities (not Catacomb-specific) | |
6 | * | |
7 | * (c) 2005 Straylight/Edgeware | |
8 | */ | |
9 | ||
10 | /*----- Licensing notice --------------------------------------------------* | |
11 | * | |
12 | * This file is part of the Python interface to Catacomb. | |
13 | * | |
14 | * Catacomb/Python is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * Catacomb/Python is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with Catacomb/Python; if not, write to the Free Software Foundation, | |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
27 | */ | |
28 | ||
29 | /*----- Header files ------------------------------------------------------*/ | |
30 | ||
31 | #include "catacomb-python.h" | |
32 | ||
33 | /*----- Conversions -------------------------------------------------------*/ | |
34 | ||
fbca05a1 MW |
35 | PyObject *getulong(unsigned long w) |
36 | { | |
37 | if (w <= MASK32) | |
38 | return (PyInt_FromLong(w)); | |
39 | else | |
40 | return (PyLong_FromUnsignedLong(w)); | |
41 | } | |
11cb3d97 MW |
42 | |
43 | PyObject *getbool(int b) | |
44 | { | |
45 | if (b) RETURN_TRUE; | |
46 | else RETURN_FALSE; | |
47 | } | |
48 | ||
49 | PyObject *abstract_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
50 | { | |
51 | PyErr_SetString(PyExc_TypeError, "can't instantiate this class"); | |
52 | return (0); | |
53 | } | |
54 | ||
55 | int convulong(PyObject *o, void *pp) | |
56 | { | |
57 | long i; | |
58 | unsigned long *p = pp; | |
59 | PyObject *t; | |
60 | ||
61 | if (PyInt_Check(o)) { | |
62 | i = PyInt_AS_LONG(o); | |
79144037 | 63 | if (i < 0) VALERR("must be nonnegative"); |
11cb3d97 MW |
64 | *p = i; |
65 | } else { | |
66 | if ((t = PyNumber_Long(o)) == 0) goto end; | |
67 | *p = PyLong_AsUnsignedLong(t); | |
68 | Py_DECREF(t); | |
69 | if (PyErr_Occurred()) goto end; | |
70 | } | |
71 | return (1); | |
72 | end: | |
73 | return (0); | |
74 | } | |
75 | ||
76 | #define CONVU_(n) \ | |
77 | int convu##n(PyObject *o, void *pp) \ | |
78 | { \ | |
79 | unsigned long u; \ | |
80 | uint##n *p = pp; \ | |
81 | \ | |
82 | if (!convulong(o, &u)) goto end; \ | |
79144037 | 83 | if (u > MASK##n) VALERR("out of range"); \ |
11cb3d97 MW |
84 | *p = u; \ |
85 | return (1); \ | |
86 | end: \ | |
87 | return (0); \ | |
88 | } | |
89 | DOUINTSZ(CONVU_) | |
90 | ||
91 | int convuint(PyObject *o, void *pp) | |
92 | { | |
93 | unsigned long u; | |
94 | unsigned *p = pp; | |
95 | ||
96 | if (!convulong(o, &u)) goto end; | |
79144037 | 97 | if (u > UINT_MAX) VALERR("out of range"); |
11cb3d97 MW |
98 | *p = u; |
99 | return (1); | |
100 | end: | |
101 | return (0); | |
102 | } | |
103 | ||
104 | int convmpw(PyObject *o, void *pp) | |
105 | { | |
106 | unsigned long u; | |
107 | unsigned *p = pp; | |
108 | ||
109 | if (!convulong(o, &u)) goto end; | |
79144037 | 110 | if (u > MPW_MAX) VALERR("out of range"); |
11cb3d97 MW |
111 | *p = u; |
112 | return (1); | |
113 | end: | |
114 | return (0); | |
115 | } | |
116 | ||
117 | int convszt(PyObject *o, void *pp) | |
118 | { | |
119 | unsigned long u; | |
120 | size_t *p = pp; | |
121 | ||
122 | if (!convulong(o, &u)) goto end; | |
79144037 | 123 | if (u > ~(size_t)0) VALERR("out of range"); |
11cb3d97 MW |
124 | *p = u; |
125 | return (1); | |
126 | end: | |
127 | return (0); | |
128 | } | |
129 | ||
130 | int convbool(PyObject *o, void *pp) | |
131 | { | |
132 | *(int *)pp = PyObject_IsTrue(o); | |
133 | return (1); | |
134 | } | |
135 | ||
136 | /*----- Type messing ------------------------------------------------------*/ | |
137 | ||
138 | static const PyTypeObject emptytype = { 0 }; | |
139 | ||
140 | void *newtype(PyTypeObject *metaty, | |
141 | const PyTypeObject *skel, | |
142 | const char *name) | |
143 | { | |
144 | PyHeapTypeObject *ty = | |
145 | (PyHeapTypeObject *)_PyObject_GC_Malloc(_PyObject_VAR_SIZE(metaty, 0)); | |
146 | if (!skel) skel = &emptytype; | |
147 | memcpy(ty, skel, sizeof(*skel)); | |
148 | if (ty->type.tp_base) Py_INCREF(ty->type.tp_base); | |
149 | #define COPY(blah) do { \ | |
150 | if (ty->type.tp_as_##blah) { \ | |
151 | memcpy(&ty->as_##blah, \ | |
152 | ty->type.tp_as_##blah, \ | |
153 | sizeof(ty->as_##blah)); \ | |
154 | ty->type.tp_as_##blah = &ty->as_##blah; \ | |
155 | } \ | |
156 | } while (0) | |
157 | COPY(number); | |
158 | COPY(sequence); | |
159 | COPY(mapping); | |
160 | COPY(buffer); | |
161 | #undef COPY | |
162 | if (name) | |
163 | ty->name = PyString_FromString(name); | |
164 | else if (ty->type.tp_name) | |
165 | ty->name = PyString_FromString(ty->type.tp_name); | |
166 | if (ty->name) | |
167 | ty->type.tp_name = PyString_AS_STRING(ty->name); | |
168 | PyObject_INIT(&ty->type, metaty); | |
169 | Py_INCREF(metaty); | |
170 | return (ty); | |
171 | } | |
172 | ||
173 | PyTypeObject *inittype(PyTypeObject *tyskel) | |
174 | { | |
175 | PyTypeObject *ty = newtype(&PyType_Type, tyskel, 0); | |
176 | ty->tp_flags |= Py_TPFLAGS_HEAPTYPE; | |
177 | PyType_Ready(ty); | |
178 | return (ty); | |
179 | } | |
180 | ||
181 | /*----- Constants ---------------------------------------------------------*/ | |
182 | ||
183 | void setconstants(PyObject *mod, const struct nameval *c) | |
184 | { | |
185 | PyObject *x; | |
186 | ||
187 | while (c->name) { | |
188 | if (c->value > LONG_MAX) | |
189 | x = PyLong_FromUnsignedLong(c->value); | |
190 | else | |
191 | x = PyInt_FromLong(c->value); | |
192 | PyModule_AddObject(mod, (/*unconst*/ char *)c->name, x); | |
193 | c++; | |
194 | } | |
195 | } | |
196 | ||
197 | /*----- Building method tables --------------------------------------------*/ | |
198 | ||
199 | DA_DECL(method_v, PyMethodDef); | |
200 | static method_v global_pymethods = DA_INIT; | |
201 | void addmethods(const PyMethodDef *m) | |
202 | { | |
203 | size_t n; | |
204 | ||
205 | for (n = 0; m[n].ml_name; n++); | |
206 | DA_ENSURE(&global_pymethods, n); | |
207 | memcpy(DA(&global_pymethods) + DA_LEN(&global_pymethods), | |
208 | m, n * sizeof(*m)); | |
209 | DA_EXTEND(&global_pymethods, n); | |
210 | } | |
211 | ||
212 | PyMethodDef *donemethods(void) | |
213 | { | |
214 | static const PyMethodDef mzero = { 0 }; | |
215 | DA_PUSH(&global_pymethods, mzero); | |
216 | return (DA(&global_pymethods)); | |
217 | } | |
218 | ||
219 | /*----- Exceptions --------------------------------------------------------*/ | |
220 | ||
221 | PyObject * mkexc(PyObject *mod, PyObject *base, | |
222 | const char *name, PyMethodDef *mm) | |
223 | { | |
224 | PyObject *nameobj = 0; | |
225 | PyObject *dict = 0; | |
226 | PyObject *exc = 0; | |
227 | PyObject *func = 0; | |
228 | PyObject *meth = 0; | |
229 | ||
230 | if ((nameobj = PyString_FromFormat("%s.%s", | |
231 | PyModule_GetName(mod), | |
232 | name)) == 0 || | |
233 | (dict = PyDict_New()) == 0 || | |
234 | (exc = PyErr_NewException(PyString_AS_STRING(nameobj), | |
235 | base, dict)) == 0) | |
236 | goto fail; | |
237 | ||
238 | if (mm) { | |
239 | while (mm->ml_name) { | |
240 | if ((func = PyCFunction_NewEx(mm, 0, mod)) == 0 || | |
241 | (meth = PyMethod_New(func, 0, exc)) == 0 || | |
242 | PyDict_SetItemString(dict, mm->ml_name, meth)) | |
243 | goto fail; | |
244 | Py_DECREF(func); func = 0; | |
245 | Py_DECREF(meth); meth = 0; | |
246 | mm++; | |
247 | } | |
248 | } | |
249 | ||
250 | done: | |
251 | Py_XDECREF(nameobj); | |
252 | Py_XDECREF(dict); | |
253 | return (exc); | |
254 | ||
255 | fail: | |
256 | Py_XDECREF(exc); | |
257 | Py_XDECREF(func); | |
258 | Py_XDECREF(meth); | |
259 | exc = 0; | |
260 | goto done; | |
261 | } | |
262 | ||
263 | /*----- Generic dictionary methods ----------------------------------------*/ | |
264 | ||
265 | static PyTypeObject *itemiter_pytype, *valiter_pytype; | |
266 | ||
267 | typedef struct iter_pyobj { | |
268 | PyObject_HEAD | |
269 | PyObject *map; | |
270 | PyObject *i; | |
271 | } iter_pyobj; | |
272 | #define ITER_MAP(o) (((iter_pyobj *)(o))->map) | |
273 | #define ITER_I(o) (((iter_pyobj *)(o))->i) | |
274 | ||
275 | static void iter_pydealloc(PyObject *me) | |
276 | { Py_DECREF(ITER_MAP(me)); Py_DECREF(ITER_I(me)); FREEOBJ(me); } | |
277 | ||
278 | static PyObject *itemiter_pynext(PyObject *me) | |
279 | { | |
280 | PyObject *k = 0, *v = 0, *rc = 0; | |
281 | ||
282 | if ((k = PyIter_Next(ITER_I(me))) != 0 && | |
283 | (v = PyObject_GetItem(ITER_MAP(me), k)) != 0) | |
284 | rc = Py_BuildValue("(OO)", k, v); | |
285 | Py_XDECREF(k); Py_XDECREF(v); | |
286 | return (rc); | |
287 | } | |
288 | ||
289 | static PyTypeObject itemiter_pytype_skel = { | |
290 | PyObject_HEAD_INIT(0) 0, /* Header */ | |
291 | "ItemIter", /* @tp_name@ */ | |
292 | sizeof(iter_pyobj), /* @tp_basicsize@ */ | |
293 | 0, /* @tp_itemsize@ */ | |
294 | ||
295 | iter_pydealloc, /* @tp_dealloc@ */ | |
296 | 0, /* @tp_print@ */ | |
297 | 0, /* @tp_getattr@ */ | |
298 | 0, /* @tp_setattr@ */ | |
299 | 0, /* @tp_compare@ */ | |
300 | 0, /* @tp_repr@ */ | |
301 | 0, /* @tp_as_number@ */ | |
302 | 0, /* @tp_as_sequence@ */ | |
303 | 0, /* @tp_as_mapping@ */ | |
304 | 0, /* @tp_hash@ */ | |
305 | 0, /* @tp_call@ */ | |
306 | 0, /* @tp_str@ */ | |
307 | 0, /* @tp_getattro@ */ | |
308 | 0, /* @tp_setattro@ */ | |
309 | 0, /* @tp_as_buffer@ */ | |
310 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
311 | Py_TPFLAGS_BASETYPE, | |
312 | ||
313 | /* @tp_doc@ */ | |
314 | "Iterates over the items of a mapping.", | |
315 | ||
316 | 0, /* @tp_traverse@ */ | |
317 | 0, /* @tp_clear@ */ | |
318 | 0, /* @tp_richcompare@ */ | |
319 | 0, /* @tp_weaklistoffset@ */ | |
320 | PyObject_SelfIter, /* @tp_iter@ */ | |
321 | itemiter_pynext, /* @tp_iternext@ */ | |
322 | 0, /* @tp_methods@ */ | |
323 | 0, /* @tp_members@ */ | |
324 | 0, /* @tp_getset@ */ | |
325 | 0, /* @tp_base@ */ | |
326 | 0, /* @tp_dict@ */ | |
327 | 0, /* @tp_descr_get@ */ | |
328 | 0, /* @tp_descr_set@ */ | |
329 | 0, /* @tp_dictoffset@ */ | |
330 | 0, /* @tp_init@ */ | |
331 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
332 | abstract_pynew, /* @tp_new@ */ | |
333 | 0, /* @tp_free@ */ | |
334 | 0 /* @tp_is_gc@ */ | |
335 | }; | |
336 | ||
337 | static PyObject *valiter_pynext(PyObject *me) | |
338 | { | |
339 | PyObject *k = 0, *rc = 0; | |
340 | ||
341 | if ((k = PyIter_Next(ITER_I(me))) != 0) | |
342 | rc = PyObject_GetItem(ITER_MAP(me), k); | |
343 | Py_XDECREF(k); | |
344 | return (rc); | |
345 | } | |
346 | ||
347 | static PyTypeObject valiter_pytype_skel = { | |
348 | PyObject_HEAD_INIT(0) 0, /* Header */ | |
349 | "ValueIter", /* @tp_name@ */ | |
350 | sizeof(iter_pyobj), /* @tp_basicsize@ */ | |
351 | 0, /* @tp_itemsize@ */ | |
352 | ||
353 | iter_pydealloc, /* @tp_dealloc@ */ | |
354 | 0, /* @tp_print@ */ | |
355 | 0, /* @tp_getattr@ */ | |
356 | 0, /* @tp_setattr@ */ | |
357 | 0, /* @tp_compare@ */ | |
358 | 0, /* @tp_repr@ */ | |
359 | 0, /* @tp_as_number@ */ | |
360 | 0, /* @tp_as_sequence@ */ | |
361 | 0, /* @tp_as_mapping@ */ | |
362 | 0, /* @tp_hash@ */ | |
363 | 0, /* @tp_call@ */ | |
364 | 0, /* @tp_str@ */ | |
365 | 0, /* @tp_getattro@ */ | |
366 | 0, /* @tp_setattro@ */ | |
367 | 0, /* @tp_as_buffer@ */ | |
368 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
369 | Py_TPFLAGS_BASETYPE, | |
370 | ||
371 | /* @tp_doc@ */ | |
372 | "Iterates over the items of a mapping.", | |
373 | ||
374 | 0, /* @tp_traverse@ */ | |
375 | 0, /* @tp_clear@ */ | |
376 | 0, /* @tp_richcompare@ */ | |
377 | 0, /* @tp_weaklistoffset@ */ | |
378 | PyObject_SelfIter, /* @tp_iter@ */ | |
379 | valiter_pynext, /* @tp_iternext@ */ | |
380 | 0, /* @tp_methods@ */ | |
381 | 0, /* @tp_members@ */ | |
382 | 0, /* @tp_getset@ */ | |
383 | 0, /* @tp_base@ */ | |
384 | 0, /* @tp_dict@ */ | |
385 | 0, /* @tp_descr_get@ */ | |
386 | 0, /* @tp_descr_set@ */ | |
387 | 0, /* @tp_dictoffset@ */ | |
388 | 0, /* @tp_init@ */ | |
389 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
390 | abstract_pynew, /* @tp_new@ */ | |
391 | 0, /* @tp_free@ */ | |
392 | 0 /* @tp_is_gc@ */ | |
393 | }; | |
394 | ||
395 | PySequenceMethods gmap_pysequence = { | |
396 | 0, /* @sq_length@ */ | |
397 | 0, /* @sq_concat@ */ | |
398 | 0, /* @sq_repeat@ */ | |
399 | 0, /* @sq_item@ */ | |
400 | 0, /* @sq_slice@ */ | |
401 | 0, /* @sq_ass_item@ */ | |
402 | 0, /* @sq_ass_slice@ */ | |
403 | PyMapping_HasKey, /* @sq_contains@ */ | |
404 | 0, /* @sq_inplace_concat@ */ | |
405 | 0 /* @sq_inplace_repeat@ */ | |
406 | }; | |
407 | ||
408 | int gmap_pysize(PyObject *me) | |
409 | { | |
410 | PyObject *i = 0, *x = 0; | |
411 | int rc = -1; | |
412 | int n = 0; | |
413 | ||
414 | if ((i = PyObject_GetIter(me)) == 0) goto done; | |
415 | while ((x = PyIter_Next(i)) != 0) { n++; Py_DECREF(x); x = 0; } | |
416 | if (PyErr_Occurred()) goto done; | |
417 | rc = n; | |
418 | done: | |
419 | Py_XDECREF(i); Py_XDECREF(x); | |
420 | return (rc); | |
421 | } | |
422 | ||
423 | PyObject *gmapmeth_has_key(PyObject *me, PyObject *arg) | |
424 | { | |
425 | PyObject *k; | |
426 | if (!PyArg_ParseTuple(arg, "O:has_key", &k)) return (0); | |
427 | return (getbool(PyMapping_HasKey(me, k))); | |
428 | } | |
429 | ||
430 | PyObject *gmapmeth_keys(PyObject *me, PyObject *arg) | |
431 | { | |
432 | PyObject *l = 0, *i = 0, *k, *rc = 0; | |
433 | int err; | |
434 | ||
435 | if (!PyArg_ParseTuple(arg, ":keys") || | |
436 | (l = PyList_New(0)) == 0 || | |
437 | (i = PyObject_GetIter(me)) == 0) | |
438 | goto done; | |
439 | while ((k = PyIter_Next(i)) != 0) | |
440 | { err = PyList_Append(l, k); Py_DECREF(k); if (err) goto done; } | |
441 | if (PyErr_Occurred()) goto done; | |
442 | rc = l; l = 0; | |
443 | done: | |
444 | Py_XDECREF(l); Py_XDECREF(i); | |
445 | return (rc); | |
446 | } | |
447 | ||
448 | PyObject *gmapmeth_values(PyObject *me, PyObject *arg) | |
449 | { | |
450 | PyObject *l = 0, *i = 0, *k, *v, *rc = 0; | |
451 | int err = 0; | |
452 | ||
453 | if (!PyArg_ParseTuple(arg, ":values") || | |
454 | (l = PyList_New(0)) == 0 || | |
455 | (i = PyObject_GetIter(me)) == 0) | |
456 | goto done; | |
457 | while ((k = PyIter_Next(i)) != 0) { | |
458 | if ((v = PyObject_GetItem(me, k)) == 0 || | |
459 | PyList_Append(l, v)) | |
460 | err = -1; | |
461 | Py_DECREF(k); Py_XDECREF(v); | |
462 | if (err) goto done; | |
463 | } | |
464 | if (PyErr_Occurred()) goto done; | |
465 | rc = l; l = 0; | |
466 | done: | |
467 | Py_XDECREF(l); Py_XDECREF(i); | |
468 | return (rc); | |
469 | } | |
470 | ||
471 | PyObject *gmapmeth_items(PyObject *me, PyObject *arg) | |
472 | { | |
473 | PyObject *l = 0, *i = 0, *k, *v, *z, *rc = 0; | |
474 | int err = 0; | |
475 | ||
476 | if (!PyArg_ParseTuple(arg, ":items") || | |
477 | (l = PyList_New(0)) == 0 || | |
478 | (i = PyObject_GetIter(me)) == 0) | |
479 | goto done; | |
480 | while ((k = PyIter_Next(i)) != 0) { | |
481 | z = 0; | |
482 | if ((v = PyObject_GetItem(me, k)) == 0 || | |
483 | (z = Py_BuildValue("(OO)", k, v)) == 0 || | |
484 | PyList_Append(l, z)) | |
485 | err = -1; | |
486 | Py_DECREF(k); Py_XDECREF(v); Py_XDECREF(z); | |
487 | if (err) goto done; | |
488 | } | |
489 | if (PyErr_Occurred()) goto done; | |
490 | rc = l; l = 0; | |
491 | done: | |
492 | Py_XDECREF(l); Py_XDECREF(i); | |
493 | return (rc); | |
494 | } | |
495 | ||
496 | PyObject *gmapmeth_iterkeys(PyObject *me, PyObject *arg) | |
497 | { | |
498 | if (!PyArg_ParseTuple(arg, ":iterkeys")) return (0); | |
499 | return (PyObject_GetIter(me)); | |
500 | } | |
501 | ||
502 | PyObject *gmapmeth_itervalues(PyObject *me, PyObject *arg) | |
503 | { | |
504 | PyObject *i; | |
505 | iter_pyobj *ii; | |
506 | ||
507 | if (!PyArg_ParseTuple(arg, ":itervalues") || | |
508 | (i = PyObject_GetIter(me)) == 0) | |
509 | return (0); | |
510 | ii = PyObject_NEW(iter_pyobj, valiter_pytype); | |
511 | ii->map = me; Py_INCREF(me); | |
512 | ii->i = i; | |
513 | return ((PyObject *)ii); | |
514 | } | |
515 | ||
516 | PyObject *gmapmeth_iteritems(PyObject *me, PyObject *arg) | |
517 | { | |
518 | PyObject *i; | |
519 | iter_pyobj *ii; | |
520 | ||
521 | if (!PyArg_ParseTuple(arg, ":iteritems") || | |
522 | (i = PyObject_GetIter(me)) == 0) | |
523 | return (0); | |
524 | ii = PyObject_NEW(iter_pyobj, itemiter_pytype); | |
525 | ii->map = me; Py_INCREF(me); | |
526 | ii->i = i; | |
527 | return ((PyObject *)ii); | |
528 | } | |
529 | ||
530 | PyObject *gmapmeth_clear(PyObject *me, PyObject *arg) | |
531 | { | |
532 | PyObject *i = 0, *k = 0, *rc = 0; | |
533 | ||
534 | if (!PyArg_ParseTuple(arg, ":clear") || | |
535 | (i = PyObject_GetIter(me)) == 0) | |
536 | goto end; | |
537 | while ((k = PyIter_Next(i)) != 0) { | |
538 | PyObject_DelItem(me, k); | |
539 | Py_DECREF(k); | |
540 | } | |
541 | if (PyErr_Occurred()) goto end; | |
542 | rc = me; Py_INCREF(me); | |
543 | end: | |
544 | Py_XDECREF(i); | |
545 | return (rc); | |
546 | } | |
547 | ||
548 | static char *def_kwlist[] = { "key", "default", 0 }; | |
549 | ||
550 | PyObject *gmapmeth_get(PyObject *me, PyObject *arg, PyObject *kw) | |
551 | { | |
552 | PyObject *k, *def = Py_None, *v; | |
553 | ||
554 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:get", def_kwlist, &k, &def)) | |
555 | return (0); | |
556 | if ((v = PyObject_GetItem(me, k)) != 0) return (v); | |
557 | PyErr_Clear(); | |
558 | RETURN_OBJ(def); | |
559 | } | |
560 | ||
561 | PyObject *gmapmeth_setdefault(PyObject *me, PyObject *arg, PyObject *kw) | |
562 | { | |
563 | PyObject *k, *def = Py_None, *v; | |
564 | ||
565 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:setdefault", | |
566 | def_kwlist, &k, &def)) | |
567 | return (0); | |
568 | if ((v = PyObject_GetItem(me, k)) != 0) return (v); | |
569 | PyErr_Clear(); | |
570 | if (PyObject_SetItem(me, k, def)) return (0); | |
571 | RETURN_OBJ(def); | |
572 | } | |
573 | ||
574 | PyObject *gmapmeth_pop(PyObject *me, PyObject *arg, PyObject *kw) | |
575 | { | |
576 | PyObject *k, *def = 0, *v; | |
577 | ||
578 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:pop", def_kwlist, &k, &def)) | |
579 | return (0); | |
580 | if ((v = PyObject_GetItem(me, k)) != 0) { | |
581 | PyObject_DelItem(me, k); | |
582 | return (v); | |
583 | } | |
584 | PyErr_Clear(); | |
585 | RETURN_OBJ(def); | |
586 | } | |
587 | ||
588 | PyObject *gmapmeth_update(PyObject *me, PyObject *arg) | |
589 | { | |
590 | PyObject *map, *i = 0, *k, *v, *rc = 0; | |
591 | int err = 0; | |
592 | ||
593 | if (!PyArg_ParseTuple(arg, "O:update", &map) || | |
594 | (i = PyObject_GetIter(map)) == 0) | |
595 | goto end; | |
596 | while ((k = PyIter_Next(i)) != 0) { | |
597 | if ((v = PyObject_GetItem(map, k)) == 0 || | |
598 | PyObject_SetItem(me, k, v)) | |
599 | err = -1; | |
600 | Py_DECREF(k); Py_XDECREF(v); | |
601 | if (err) goto end; | |
602 | } | |
603 | if (PyErr_Occurred()) goto end; | |
604 | rc = me; Py_INCREF(me); | |
605 | end: | |
606 | Py_XDECREF(i); | |
607 | return (rc); | |
608 | } | |
609 | ||
610 | PyObject *gmapmeth_popitem(PyObject *me, PyObject *arg) | |
611 | { | |
612 | PyObject *i = 0, *k = 0, *v = 0, *rc = 0; | |
613 | ||
614 | if (!PyArg_ParseTuple(arg, ":popitem") || | |
615 | (i = PyObject_GetIter(me))) | |
616 | goto end; | |
617 | if ((k = PyIter_Next(i)) == 0) { | |
618 | if (!PyErr_Occurred()) VALERR("popitem(): mapping is empty"); | |
619 | goto end; | |
620 | } | |
621 | if ((v = PyObject_GetItem(me, k)) == 0 || | |
622 | PyObject_DelItem(me, k)) | |
623 | goto end; | |
624 | rc = Py_BuildValue("(OO)", k, v); | |
625 | end: | |
626 | Py_XDECREF(i); Py_XDECREF(k); Py_XDECREF(v); | |
627 | return (rc); | |
628 | } | |
629 | ||
630 | PyMethodDef gmap_pymethods[] = { | |
631 | GMAP_METHODS | |
632 | { 0 } | |
633 | }; | |
634 | ||
635 | /*----- Initialization ----------------------------------------------------*/ | |
636 | ||
637 | void util_init(void) | |
638 | { | |
639 | INITTYPE(itemiter, root); | |
640 | INITTYPE(valiter, root); | |
641 | } | |
642 | ||
643 | void util_insert(PyObject *mod) | |
644 | { | |
645 | INSERT("ItemIter", itemiter_pytype); | |
646 | INSERT("ValueIter", valiter_pytype); | |
647 | } | |
648 | ||
649 | /*----- That's all, folks -------------------------------------------------*/ |