Commit | Line | Data |
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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 | ||
35 | #define GETU_(n) \ | |
36 | PyObject *getu##n(uint##n w) \ | |
37 | { \ | |
38 | if (w <= MASK##n) \ | |
39 | return (PyInt_FromLong(w)); \ | |
40 | else \ | |
41 | return (PyLong_FromUnsignedLong(w)); \ | |
42 | } | |
43 | DOUINTSZ(GETU_) | |
44 | ||
45 | PyObject *getbool(int b) | |
46 | { | |
47 | if (b) RETURN_TRUE; | |
48 | else RETURN_FALSE; | |
49 | } | |
50 | ||
51 | PyObject *abstract_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
52 | { | |
53 | PyErr_SetString(PyExc_TypeError, "can't instantiate this class"); | |
54 | return (0); | |
55 | } | |
56 | ||
57 | int convulong(PyObject *o, void *pp) | |
58 | { | |
59 | long i; | |
60 | unsigned long *p = pp; | |
61 | PyObject *t; | |
62 | ||
63 | if (PyInt_Check(o)) { | |
64 | i = PyInt_AS_LONG(o); | |
65 | if (i < 0) TYERR("must be nonnegative"); | |
66 | *p = i; | |
67 | } else { | |
68 | if ((t = PyNumber_Long(o)) == 0) goto end; | |
69 | *p = PyLong_AsUnsignedLong(t); | |
70 | Py_DECREF(t); | |
71 | if (PyErr_Occurred()) goto end; | |
72 | } | |
73 | return (1); | |
74 | end: | |
75 | return (0); | |
76 | } | |
77 | ||
78 | #define CONVU_(n) \ | |
79 | int convu##n(PyObject *o, void *pp) \ | |
80 | { \ | |
81 | unsigned long u; \ | |
82 | uint##n *p = pp; \ | |
83 | \ | |
84 | if (!convulong(o, &u)) goto end; \ | |
85 | if (u > MASK##n) TYERR("out of range"); \ | |
86 | *p = u; \ | |
87 | return (1); \ | |
88 | end: \ | |
89 | return (0); \ | |
90 | } | |
91 | DOUINTSZ(CONVU_) | |
92 | ||
93 | int convuint(PyObject *o, void *pp) | |
94 | { | |
95 | unsigned long u; | |
96 | unsigned *p = pp; | |
97 | ||
98 | if (!convulong(o, &u)) goto end; | |
99 | if (u > UINT_MAX) TYERR("out of range"); | |
100 | *p = u; | |
101 | return (1); | |
102 | end: | |
103 | return (0); | |
104 | } | |
105 | ||
106 | int convmpw(PyObject *o, void *pp) | |
107 | { | |
108 | unsigned long u; | |
109 | unsigned *p = pp; | |
110 | ||
111 | if (!convulong(o, &u)) goto end; | |
112 | if (u > MPW_MAX) TYERR("out of range"); | |
113 | *p = u; | |
114 | return (1); | |
115 | end: | |
116 | return (0); | |
117 | } | |
118 | ||
119 | int convszt(PyObject *o, void *pp) | |
120 | { | |
121 | unsigned long u; | |
122 | size_t *p = pp; | |
123 | ||
124 | if (!convulong(o, &u)) goto end; | |
125 | if (u > ~(size_t)0) TYERR("out of range"); | |
126 | *p = u; | |
127 | return (1); | |
128 | end: | |
129 | return (0); | |
130 | } | |
131 | ||
132 | int convbool(PyObject *o, void *pp) | |
133 | { | |
134 | *(int *)pp = PyObject_IsTrue(o); | |
135 | return (1); | |
136 | } | |
137 | ||
138 | /*----- Type messing ------------------------------------------------------*/ | |
139 | ||
140 | static const PyTypeObject emptytype = { 0 }; | |
141 | ||
142 | void *newtype(PyTypeObject *metaty, | |
143 | const PyTypeObject *skel, | |
144 | const char *name) | |
145 | { | |
146 | PyHeapTypeObject *ty = | |
147 | (PyHeapTypeObject *)_PyObject_GC_Malloc(_PyObject_VAR_SIZE(metaty, 0)); | |
148 | if (!skel) skel = &emptytype; | |
149 | memcpy(ty, skel, sizeof(*skel)); | |
150 | if (ty->type.tp_base) Py_INCREF(ty->type.tp_base); | |
151 | #define COPY(blah) do { \ | |
152 | if (ty->type.tp_as_##blah) { \ | |
153 | memcpy(&ty->as_##blah, \ | |
154 | ty->type.tp_as_##blah, \ | |
155 | sizeof(ty->as_##blah)); \ | |
156 | ty->type.tp_as_##blah = &ty->as_##blah; \ | |
157 | } \ | |
158 | } while (0) | |
159 | COPY(number); | |
160 | COPY(sequence); | |
161 | COPY(mapping); | |
162 | COPY(buffer); | |
163 | #undef COPY | |
164 | if (name) | |
165 | ty->name = PyString_FromString(name); | |
166 | else if (ty->type.tp_name) | |
167 | ty->name = PyString_FromString(ty->type.tp_name); | |
168 | if (ty->name) | |
169 | ty->type.tp_name = PyString_AS_STRING(ty->name); | |
170 | PyObject_INIT(&ty->type, metaty); | |
171 | Py_INCREF(metaty); | |
172 | return (ty); | |
173 | } | |
174 | ||
175 | PyTypeObject *inittype(PyTypeObject *tyskel) | |
176 | { | |
177 | PyTypeObject *ty = newtype(&PyType_Type, tyskel, 0); | |
178 | ty->tp_flags |= Py_TPFLAGS_HEAPTYPE; | |
179 | PyType_Ready(ty); | |
180 | return (ty); | |
181 | } | |
182 | ||
183 | /*----- Constants ---------------------------------------------------------*/ | |
184 | ||
185 | void setconstants(PyObject *mod, const struct nameval *c) | |
186 | { | |
187 | PyObject *x; | |
188 | ||
189 | while (c->name) { | |
190 | if (c->value > LONG_MAX) | |
191 | x = PyLong_FromUnsignedLong(c->value); | |
192 | else | |
193 | x = PyInt_FromLong(c->value); | |
194 | PyModule_AddObject(mod, (/*unconst*/ char *)c->name, x); | |
195 | c++; | |
196 | } | |
197 | } | |
198 | ||
199 | /*----- Building method tables --------------------------------------------*/ | |
200 | ||
201 | DA_DECL(method_v, PyMethodDef); | |
202 | static method_v global_pymethods = DA_INIT; | |
203 | void addmethods(const PyMethodDef *m) | |
204 | { | |
205 | size_t n; | |
206 | ||
207 | for (n = 0; m[n].ml_name; n++); | |
208 | DA_ENSURE(&global_pymethods, n); | |
209 | memcpy(DA(&global_pymethods) + DA_LEN(&global_pymethods), | |
210 | m, n * sizeof(*m)); | |
211 | DA_EXTEND(&global_pymethods, n); | |
212 | } | |
213 | ||
214 | PyMethodDef *donemethods(void) | |
215 | { | |
216 | static const PyMethodDef mzero = { 0 }; | |
217 | DA_PUSH(&global_pymethods, mzero); | |
218 | return (DA(&global_pymethods)); | |
219 | } | |
220 | ||
221 | /*----- Exceptions --------------------------------------------------------*/ | |
222 | ||
223 | PyObject * mkexc(PyObject *mod, PyObject *base, | |
224 | const char *name, PyMethodDef *mm) | |
225 | { | |
226 | PyObject *nameobj = 0; | |
227 | PyObject *dict = 0; | |
228 | PyObject *exc = 0; | |
229 | PyObject *func = 0; | |
230 | PyObject *meth = 0; | |
231 | ||
232 | if ((nameobj = PyString_FromFormat("%s.%s", | |
233 | PyModule_GetName(mod), | |
234 | name)) == 0 || | |
235 | (dict = PyDict_New()) == 0 || | |
236 | (exc = PyErr_NewException(PyString_AS_STRING(nameobj), | |
237 | base, dict)) == 0) | |
238 | goto fail; | |
239 | ||
240 | if (mm) { | |
241 | while (mm->ml_name) { | |
242 | if ((func = PyCFunction_NewEx(mm, 0, mod)) == 0 || | |
243 | (meth = PyMethod_New(func, 0, exc)) == 0 || | |
244 | PyDict_SetItemString(dict, mm->ml_name, meth)) | |
245 | goto fail; | |
246 | Py_DECREF(func); func = 0; | |
247 | Py_DECREF(meth); meth = 0; | |
248 | mm++; | |
249 | } | |
250 | } | |
251 | ||
252 | done: | |
253 | Py_XDECREF(nameobj); | |
254 | Py_XDECREF(dict); | |
255 | return (exc); | |
256 | ||
257 | fail: | |
258 | Py_XDECREF(exc); | |
259 | Py_XDECREF(func); | |
260 | Py_XDECREF(meth); | |
261 | exc = 0; | |
262 | goto done; | |
263 | } | |
264 | ||
265 | /*----- Generic dictionary methods ----------------------------------------*/ | |
266 | ||
267 | static PyTypeObject *itemiter_pytype, *valiter_pytype; | |
268 | ||
269 | typedef struct iter_pyobj { | |
270 | PyObject_HEAD | |
271 | PyObject *map; | |
272 | PyObject *i; | |
273 | } iter_pyobj; | |
274 | #define ITER_MAP(o) (((iter_pyobj *)(o))->map) | |
275 | #define ITER_I(o) (((iter_pyobj *)(o))->i) | |
276 | ||
277 | static void iter_pydealloc(PyObject *me) | |
278 | { Py_DECREF(ITER_MAP(me)); Py_DECREF(ITER_I(me)); FREEOBJ(me); } | |
279 | ||
280 | static PyObject *itemiter_pynext(PyObject *me) | |
281 | { | |
282 | PyObject *k = 0, *v = 0, *rc = 0; | |
283 | ||
284 | if ((k = PyIter_Next(ITER_I(me))) != 0 && | |
285 | (v = PyObject_GetItem(ITER_MAP(me), k)) != 0) | |
286 | rc = Py_BuildValue("(OO)", k, v); | |
287 | Py_XDECREF(k); Py_XDECREF(v); | |
288 | return (rc); | |
289 | } | |
290 | ||
291 | static PyTypeObject itemiter_pytype_skel = { | |
292 | PyObject_HEAD_INIT(0) 0, /* Header */ | |
293 | "ItemIter", /* @tp_name@ */ | |
294 | sizeof(iter_pyobj), /* @tp_basicsize@ */ | |
295 | 0, /* @tp_itemsize@ */ | |
296 | ||
297 | iter_pydealloc, /* @tp_dealloc@ */ | |
298 | 0, /* @tp_print@ */ | |
299 | 0, /* @tp_getattr@ */ | |
300 | 0, /* @tp_setattr@ */ | |
301 | 0, /* @tp_compare@ */ | |
302 | 0, /* @tp_repr@ */ | |
303 | 0, /* @tp_as_number@ */ | |
304 | 0, /* @tp_as_sequence@ */ | |
305 | 0, /* @tp_as_mapping@ */ | |
306 | 0, /* @tp_hash@ */ | |
307 | 0, /* @tp_call@ */ | |
308 | 0, /* @tp_str@ */ | |
309 | 0, /* @tp_getattro@ */ | |
310 | 0, /* @tp_setattro@ */ | |
311 | 0, /* @tp_as_buffer@ */ | |
312 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
313 | Py_TPFLAGS_BASETYPE, | |
314 | ||
315 | /* @tp_doc@ */ | |
316 | "Iterates over the items of a mapping.", | |
317 | ||
318 | 0, /* @tp_traverse@ */ | |
319 | 0, /* @tp_clear@ */ | |
320 | 0, /* @tp_richcompare@ */ | |
321 | 0, /* @tp_weaklistoffset@ */ | |
322 | PyObject_SelfIter, /* @tp_iter@ */ | |
323 | itemiter_pynext, /* @tp_iternext@ */ | |
324 | 0, /* @tp_methods@ */ | |
325 | 0, /* @tp_members@ */ | |
326 | 0, /* @tp_getset@ */ | |
327 | 0, /* @tp_base@ */ | |
328 | 0, /* @tp_dict@ */ | |
329 | 0, /* @tp_descr_get@ */ | |
330 | 0, /* @tp_descr_set@ */ | |
331 | 0, /* @tp_dictoffset@ */ | |
332 | 0, /* @tp_init@ */ | |
333 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
334 | abstract_pynew, /* @tp_new@ */ | |
335 | 0, /* @tp_free@ */ | |
336 | 0 /* @tp_is_gc@ */ | |
337 | }; | |
338 | ||
339 | static PyObject *valiter_pynext(PyObject *me) | |
340 | { | |
341 | PyObject *k = 0, *rc = 0; | |
342 | ||
343 | if ((k = PyIter_Next(ITER_I(me))) != 0) | |
344 | rc = PyObject_GetItem(ITER_MAP(me), k); | |
345 | Py_XDECREF(k); | |
346 | return (rc); | |
347 | } | |
348 | ||
349 | static PyTypeObject valiter_pytype_skel = { | |
350 | PyObject_HEAD_INIT(0) 0, /* Header */ | |
351 | "ValueIter", /* @tp_name@ */ | |
352 | sizeof(iter_pyobj), /* @tp_basicsize@ */ | |
353 | 0, /* @tp_itemsize@ */ | |
354 | ||
355 | iter_pydealloc, /* @tp_dealloc@ */ | |
356 | 0, /* @tp_print@ */ | |
357 | 0, /* @tp_getattr@ */ | |
358 | 0, /* @tp_setattr@ */ | |
359 | 0, /* @tp_compare@ */ | |
360 | 0, /* @tp_repr@ */ | |
361 | 0, /* @tp_as_number@ */ | |
362 | 0, /* @tp_as_sequence@ */ | |
363 | 0, /* @tp_as_mapping@ */ | |
364 | 0, /* @tp_hash@ */ | |
365 | 0, /* @tp_call@ */ | |
366 | 0, /* @tp_str@ */ | |
367 | 0, /* @tp_getattro@ */ | |
368 | 0, /* @tp_setattro@ */ | |
369 | 0, /* @tp_as_buffer@ */ | |
370 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
371 | Py_TPFLAGS_BASETYPE, | |
372 | ||
373 | /* @tp_doc@ */ | |
374 | "Iterates over the items of a mapping.", | |
375 | ||
376 | 0, /* @tp_traverse@ */ | |
377 | 0, /* @tp_clear@ */ | |
378 | 0, /* @tp_richcompare@ */ | |
379 | 0, /* @tp_weaklistoffset@ */ | |
380 | PyObject_SelfIter, /* @tp_iter@ */ | |
381 | valiter_pynext, /* @tp_iternext@ */ | |
382 | 0, /* @tp_methods@ */ | |
383 | 0, /* @tp_members@ */ | |
384 | 0, /* @tp_getset@ */ | |
385 | 0, /* @tp_base@ */ | |
386 | 0, /* @tp_dict@ */ | |
387 | 0, /* @tp_descr_get@ */ | |
388 | 0, /* @tp_descr_set@ */ | |
389 | 0, /* @tp_dictoffset@ */ | |
390 | 0, /* @tp_init@ */ | |
391 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
392 | abstract_pynew, /* @tp_new@ */ | |
393 | 0, /* @tp_free@ */ | |
394 | 0 /* @tp_is_gc@ */ | |
395 | }; | |
396 | ||
397 | PySequenceMethods gmap_pysequence = { | |
398 | 0, /* @sq_length@ */ | |
399 | 0, /* @sq_concat@ */ | |
400 | 0, /* @sq_repeat@ */ | |
401 | 0, /* @sq_item@ */ | |
402 | 0, /* @sq_slice@ */ | |
403 | 0, /* @sq_ass_item@ */ | |
404 | 0, /* @sq_ass_slice@ */ | |
405 | PyMapping_HasKey, /* @sq_contains@ */ | |
406 | 0, /* @sq_inplace_concat@ */ | |
407 | 0 /* @sq_inplace_repeat@ */ | |
408 | }; | |
409 | ||
410 | int gmap_pysize(PyObject *me) | |
411 | { | |
412 | PyObject *i = 0, *x = 0; | |
413 | int rc = -1; | |
414 | int n = 0; | |
415 | ||
416 | if ((i = PyObject_GetIter(me)) == 0) goto done; | |
417 | while ((x = PyIter_Next(i)) != 0) { n++; Py_DECREF(x); x = 0; } | |
418 | if (PyErr_Occurred()) goto done; | |
419 | rc = n; | |
420 | done: | |
421 | Py_XDECREF(i); Py_XDECREF(x); | |
422 | return (rc); | |
423 | } | |
424 | ||
425 | PyObject *gmapmeth_has_key(PyObject *me, PyObject *arg) | |
426 | { | |
427 | PyObject *k; | |
428 | if (!PyArg_ParseTuple(arg, "O:has_key", &k)) return (0); | |
429 | return (getbool(PyMapping_HasKey(me, k))); | |
430 | } | |
431 | ||
432 | PyObject *gmapmeth_keys(PyObject *me, PyObject *arg) | |
433 | { | |
434 | PyObject *l = 0, *i = 0, *k, *rc = 0; | |
435 | int err; | |
436 | ||
437 | if (!PyArg_ParseTuple(arg, ":keys") || | |
438 | (l = PyList_New(0)) == 0 || | |
439 | (i = PyObject_GetIter(me)) == 0) | |
440 | goto done; | |
441 | while ((k = PyIter_Next(i)) != 0) | |
442 | { err = PyList_Append(l, k); Py_DECREF(k); if (err) goto done; } | |
443 | if (PyErr_Occurred()) goto done; | |
444 | rc = l; l = 0; | |
445 | done: | |
446 | Py_XDECREF(l); Py_XDECREF(i); | |
447 | return (rc); | |
448 | } | |
449 | ||
450 | PyObject *gmapmeth_values(PyObject *me, PyObject *arg) | |
451 | { | |
452 | PyObject *l = 0, *i = 0, *k, *v, *rc = 0; | |
453 | int err = 0; | |
454 | ||
455 | if (!PyArg_ParseTuple(arg, ":values") || | |
456 | (l = PyList_New(0)) == 0 || | |
457 | (i = PyObject_GetIter(me)) == 0) | |
458 | goto done; | |
459 | while ((k = PyIter_Next(i)) != 0) { | |
460 | if ((v = PyObject_GetItem(me, k)) == 0 || | |
461 | PyList_Append(l, v)) | |
462 | err = -1; | |
463 | Py_DECREF(k); Py_XDECREF(v); | |
464 | if (err) goto done; | |
465 | } | |
466 | if (PyErr_Occurred()) goto done; | |
467 | rc = l; l = 0; | |
468 | done: | |
469 | Py_XDECREF(l); Py_XDECREF(i); | |
470 | return (rc); | |
471 | } | |
472 | ||
473 | PyObject *gmapmeth_items(PyObject *me, PyObject *arg) | |
474 | { | |
475 | PyObject *l = 0, *i = 0, *k, *v, *z, *rc = 0; | |
476 | int err = 0; | |
477 | ||
478 | if (!PyArg_ParseTuple(arg, ":items") || | |
479 | (l = PyList_New(0)) == 0 || | |
480 | (i = PyObject_GetIter(me)) == 0) | |
481 | goto done; | |
482 | while ((k = PyIter_Next(i)) != 0) { | |
483 | z = 0; | |
484 | if ((v = PyObject_GetItem(me, k)) == 0 || | |
485 | (z = Py_BuildValue("(OO)", k, v)) == 0 || | |
486 | PyList_Append(l, z)) | |
487 | err = -1; | |
488 | Py_DECREF(k); Py_XDECREF(v); Py_XDECREF(z); | |
489 | if (err) goto done; | |
490 | } | |
491 | if (PyErr_Occurred()) goto done; | |
492 | rc = l; l = 0; | |
493 | done: | |
494 | Py_XDECREF(l); Py_XDECREF(i); | |
495 | return (rc); | |
496 | } | |
497 | ||
498 | PyObject *gmapmeth_iterkeys(PyObject *me, PyObject *arg) | |
499 | { | |
500 | if (!PyArg_ParseTuple(arg, ":iterkeys")) return (0); | |
501 | return (PyObject_GetIter(me)); | |
502 | } | |
503 | ||
504 | PyObject *gmapmeth_itervalues(PyObject *me, PyObject *arg) | |
505 | { | |
506 | PyObject *i; | |
507 | iter_pyobj *ii; | |
508 | ||
509 | if (!PyArg_ParseTuple(arg, ":itervalues") || | |
510 | (i = PyObject_GetIter(me)) == 0) | |
511 | return (0); | |
512 | ii = PyObject_NEW(iter_pyobj, valiter_pytype); | |
513 | ii->map = me; Py_INCREF(me); | |
514 | ii->i = i; | |
515 | return ((PyObject *)ii); | |
516 | } | |
517 | ||
518 | PyObject *gmapmeth_iteritems(PyObject *me, PyObject *arg) | |
519 | { | |
520 | PyObject *i; | |
521 | iter_pyobj *ii; | |
522 | ||
523 | if (!PyArg_ParseTuple(arg, ":iteritems") || | |
524 | (i = PyObject_GetIter(me)) == 0) | |
525 | return (0); | |
526 | ii = PyObject_NEW(iter_pyobj, itemiter_pytype); | |
527 | ii->map = me; Py_INCREF(me); | |
528 | ii->i = i; | |
529 | return ((PyObject *)ii); | |
530 | } | |
531 | ||
532 | PyObject *gmapmeth_clear(PyObject *me, PyObject *arg) | |
533 | { | |
534 | PyObject *i = 0, *k = 0, *rc = 0; | |
535 | ||
536 | if (!PyArg_ParseTuple(arg, ":clear") || | |
537 | (i = PyObject_GetIter(me)) == 0) | |
538 | goto end; | |
539 | while ((k = PyIter_Next(i)) != 0) { | |
540 | PyObject_DelItem(me, k); | |
541 | Py_DECREF(k); | |
542 | } | |
543 | if (PyErr_Occurred()) goto end; | |
544 | rc = me; Py_INCREF(me); | |
545 | end: | |
546 | Py_XDECREF(i); | |
547 | return (rc); | |
548 | } | |
549 | ||
550 | static char *def_kwlist[] = { "key", "default", 0 }; | |
551 | ||
552 | PyObject *gmapmeth_get(PyObject *me, PyObject *arg, PyObject *kw) | |
553 | { | |
554 | PyObject *k, *def = Py_None, *v; | |
555 | ||
556 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:get", def_kwlist, &k, &def)) | |
557 | return (0); | |
558 | if ((v = PyObject_GetItem(me, k)) != 0) return (v); | |
559 | PyErr_Clear(); | |
560 | RETURN_OBJ(def); | |
561 | } | |
562 | ||
563 | PyObject *gmapmeth_setdefault(PyObject *me, PyObject *arg, PyObject *kw) | |
564 | { | |
565 | PyObject *k, *def = Py_None, *v; | |
566 | ||
567 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:setdefault", | |
568 | def_kwlist, &k, &def)) | |
569 | return (0); | |
570 | if ((v = PyObject_GetItem(me, k)) != 0) return (v); | |
571 | PyErr_Clear(); | |
572 | if (PyObject_SetItem(me, k, def)) return (0); | |
573 | RETURN_OBJ(def); | |
574 | } | |
575 | ||
576 | PyObject *gmapmeth_pop(PyObject *me, PyObject *arg, PyObject *kw) | |
577 | { | |
578 | PyObject *k, *def = 0, *v; | |
579 | ||
580 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "OO:pop", def_kwlist, &k, &def)) | |
581 | return (0); | |
582 | if ((v = PyObject_GetItem(me, k)) != 0) { | |
583 | PyObject_DelItem(me, k); | |
584 | return (v); | |
585 | } | |
586 | PyErr_Clear(); | |
587 | RETURN_OBJ(def); | |
588 | } | |
589 | ||
590 | PyObject *gmapmeth_update(PyObject *me, PyObject *arg) | |
591 | { | |
592 | PyObject *map, *i = 0, *k, *v, *rc = 0; | |
593 | int err = 0; | |
594 | ||
595 | if (!PyArg_ParseTuple(arg, "O:update", &map) || | |
596 | (i = PyObject_GetIter(map)) == 0) | |
597 | goto end; | |
598 | while ((k = PyIter_Next(i)) != 0) { | |
599 | if ((v = PyObject_GetItem(map, k)) == 0 || | |
600 | PyObject_SetItem(me, k, v)) | |
601 | err = -1; | |
602 | Py_DECREF(k); Py_XDECREF(v); | |
603 | if (err) goto end; | |
604 | } | |
605 | if (PyErr_Occurred()) goto end; | |
606 | rc = me; Py_INCREF(me); | |
607 | end: | |
608 | Py_XDECREF(i); | |
609 | return (rc); | |
610 | } | |
611 | ||
612 | PyObject *gmapmeth_popitem(PyObject *me, PyObject *arg) | |
613 | { | |
614 | PyObject *i = 0, *k = 0, *v = 0, *rc = 0; | |
615 | ||
616 | if (!PyArg_ParseTuple(arg, ":popitem") || | |
617 | (i = PyObject_GetIter(me))) | |
618 | goto end; | |
619 | if ((k = PyIter_Next(i)) == 0) { | |
620 | if (!PyErr_Occurred()) VALERR("popitem(): mapping is empty"); | |
621 | goto end; | |
622 | } | |
623 | if ((v = PyObject_GetItem(me, k)) == 0 || | |
624 | PyObject_DelItem(me, k)) | |
625 | goto end; | |
626 | rc = Py_BuildValue("(OO)", k, v); | |
627 | end: | |
628 | Py_XDECREF(i); Py_XDECREF(k); Py_XDECREF(v); | |
629 | return (rc); | |
630 | } | |
631 | ||
632 | PyMethodDef gmap_pymethods[] = { | |
633 | GMAP_METHODS | |
634 | { 0 } | |
635 | }; | |
636 | ||
637 | /*----- Initialization ----------------------------------------------------*/ | |
638 | ||
639 | void util_init(void) | |
640 | { | |
641 | INITTYPE(itemiter, root); | |
642 | INITTYPE(valiter, root); | |
643 | } | |
644 | ||
645 | void util_insert(PyObject *mod) | |
646 | { | |
647 | INSERT("ItemIter", itemiter_pytype); | |
648 | INSERT("ValueIter", valiter_pytype); | |
649 | } | |
650 | ||
651 | /*----- That's all, folks -------------------------------------------------*/ |