Code cleanup: use 'const' for arrays (python)
[blender.git] / source / blender / python / intern / bpy_rna.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * Contributor(s): Campbell Barton
19  *
20  * ***** END GPL LICENSE BLOCK *****
21  */
22
23 /** \file blender/python/intern/bpy_rna.c
24  *  \ingroup pythonintern
25  *
26  * This file is the main interface between python and blenders data api (RNA),
27  * exposing RNA to python so blender data can be accessed in a python like way.
28  *
29  * The two main types are 'BPy_StructRNA' and 'BPy_PropertyRNA' - the base
30  * classes for most of the data python accesses in blender.
31  */
32
33 #include <Python.h>
34
35 #include <stddef.h>
36 #include <float.h> /* FLT_MIN/MAX */
37
38 #include "RNA_types.h"
39
40 #include "BLI_dynstr.h"
41 #include "BLI_string.h"
42 #include "BLI_listbase.h"
43 #include "BLI_math_rotation.h"
44 #include "BLI_utildefines.h"
45
46 #include "BPY_extern.h"
47
48 #include "bpy_rna.h"
49 #include "bpy_rna_anim.h"
50 #include "bpy_props.h"
51 #include "bpy_util.h"
52 #include "bpy_rna_callback.h"
53 #include "bpy_intern_string.h"
54
55 #ifdef USE_PYRNA_INVALIDATE_WEAKREF
56 #  include "MEM_guardedalloc.h"
57 #endif
58
59 #ifdef USE_PYRNA_INVALIDATE_WEAKREF
60 #  include "BLI_ghash.h"
61 #endif
62
63 #include "RNA_enum_types.h"
64 #include "RNA_define.h" /* RNA_def_property_free_identifier */
65 #include "RNA_access.h"
66
67 #include "MEM_guardedalloc.h"
68
69 #include "BKE_main.h"
70 #include "BKE_idcode.h"
71 #include "BKE_context.h"
72 #include "BKE_global.h" /* evil G.* */
73 #include "BKE_report.h"
74 #include "BKE_idprop.h"
75
76 #include "BKE_animsys.h"
77 #include "BKE_fcurve.h"
78
79 #include "../generic/idprop_py_api.h" /* for IDprop lookups */
80 #include "../generic/py_capi_utils.h"
81
82 #ifdef WITH_INTERNATIONAL
83 #  include "BLF_translation.h"
84 #endif
85
86 #define USE_PEDANTIC_WRITE
87 #define USE_MATHUTILS
88 #define USE_STRING_COERCE
89
90 static PyObject *pyrna_struct_Subtype(PointerRNA *ptr);
91 static PyObject *pyrna_prop_collection_values(BPy_PropertyRNA *self);
92
93 #define BPY_DOC_ID_PROP_TYPE_NOTE                                             \
94 "   .. note::\n"                                                              \
95 "\n"                                                                          \
96 "      Only :class:`bpy.types.ID`, :class:`bpy.types.Bone` and \n"            \
97 "      :class:`bpy.types.PoseBone` classes support custom properties.\n"
98
99
100 int pyrna_struct_validity_check(BPy_StructRNA *pysrna)
101 {
102         if (pysrna->ptr.type) {
103                 return 0;
104         }
105         PyErr_Format(PyExc_ReferenceError,
106                      "StructRNA of type %.200s has been removed",
107                      Py_TYPE(pysrna)->tp_name);
108         return -1;
109 }
110
111 int pyrna_prop_validity_check(BPy_PropertyRNA *self)
112 {
113         if (self->ptr.type) {
114                 return 0;
115         }
116         PyErr_Format(PyExc_ReferenceError,
117                      "PropertyRNA of type %.200s.%.200s has been removed",
118                      Py_TYPE(self)->tp_name, RNA_property_identifier(self->prop));
119         return -1;
120 }
121
122 void pyrna_invalidate(BPy_DummyPointerRNA *self)
123 {
124         RNA_POINTER_INVALIDATE(&self->ptr);
125 }
126
127 #ifdef USE_PYRNA_INVALIDATE_GC
128 #define FROM_GC(g) ((PyObject *)(((PyGC_Head *)g) + 1))
129
130 /* only for sizeof() */
131 struct gc_generation {
132         PyGC_Head head;
133         int threshold;
134         int count;
135 } gc_generation;
136
137 static void id_release_gc(struct ID *id)
138 {
139         unsigned int j;
140         // unsigned int i = 0;
141         for (j = 0; j < 3; j++) {
142                 /* hack below to get the 2 other lists from _PyGC_generation0 that are normally not exposed */
143                 PyGC_Head *gen = (PyGC_Head *)(((char *)_PyGC_generation0) + (sizeof(gc_generation) * j));
144                 PyGC_Head *g = gen->gc.gc_next;
145                 while ((g = g->gc.gc_next) != gen) {
146                         PyObject *ob = FROM_GC(g);
147                         if (PyType_IsSubtype(Py_TYPE(ob), &pyrna_struct_Type) || PyType_IsSubtype(Py_TYPE(ob), &pyrna_prop_Type)) {
148                                 BPy_DummyPointerRNA *ob_ptr = (BPy_DummyPointerRNA *)ob;
149                                 if (ob_ptr->ptr.id.data == id) {
150                                         pyrna_invalidate(ob_ptr);
151                                         // printf("freeing: %p %s, %.200s\n", (void *)ob, id->name, Py_TYPE(ob)->tp_name);
152                                         // i++;
153                                 }
154                         }
155                 }
156         }
157         // printf("id_release_gc freed '%s': %d\n", id->name, i);
158 }
159 #endif
160
161 #ifdef USE_PYRNA_INVALIDATE_WEAKREF
162 //#define DEBUG_RNA_WEAKREF
163
164 struct GHash *id_weakref_pool = NULL;
165 static PyObject *id_free_weakref_cb(PyObject *weakinfo_pair, PyObject *weakref);
166 static PyMethodDef id_free_weakref_cb_def = {"id_free_weakref_cb", (PyCFunction)id_free_weakref_cb, METH_O, NULL};
167
168 /* adds a reference to the list, remember to decref */
169 static GHash *id_weakref_pool_get(ID *id)
170 {
171         GHash *weakinfo_hash = NULL;
172
173         if (id_weakref_pool) {
174                 weakinfo_hash = BLI_ghash_lookup(id_weakref_pool, (void *)id);
175         }
176         else {
177                 /* first time, allocate pool */
178                 id_weakref_pool = BLI_ghash_ptr_new("rna_global_pool");
179                 weakinfo_hash = NULL;
180         }
181
182         if (weakinfo_hash == NULL) {
183                 /* we're using a ghash as a set, could use libHX's HXMAP_SINGULAR but would be an extra dep. */
184                 weakinfo_hash = BLI_ghash_ptr_new("rna_id");
185                 BLI_ghash_insert(id_weakref_pool, (void *)id, weakinfo_hash);
186         }
187
188         return weakinfo_hash;
189 }
190
191 /* called from pyrna_struct_CreatePyObject() and pyrna_prop_CreatePyObject() */
192 static void id_weakref_pool_add(ID *id, BPy_DummyPointerRNA *pyrna)
193 {
194         PyObject *weakref;
195         PyObject *weakref_capsule;
196         PyObject *weakref_cb_py;
197
198         /* create a new function instance and insert the list as 'self' so we can remove ourself from it */
199         GHash *weakinfo_hash = id_weakref_pool_get(id); /* new or existing */
200
201         weakref_capsule = PyCapsule_New(weakinfo_hash, NULL, NULL);
202         weakref_cb_py = PyCFunction_New(&id_free_weakref_cb_def, weakref_capsule);
203         Py_DECREF(weakref_capsule);
204
205         /* add weakref to weakinfo_hash list */
206         weakref = PyWeakref_NewRef((PyObject *)pyrna, weakref_cb_py);
207
208         Py_DECREF(weakref_cb_py); /* function owned by the weakref now */
209
210         /* important to add at the end, since first removal looks at the end */
211         BLI_ghash_insert(weakinfo_hash, (void *)weakref, id); /* using a hash table as a set, all 'id's are the same */
212         /* weakinfo_hash owns the weakref */
213
214 }
215
216 /* workaround to get the last id without a lookup */
217 static ID *_id_tmp_ptr;
218 static void value_id_set(void *id)
219 {
220         _id_tmp_ptr = (ID *)id;
221 }
222
223 static void id_release_weakref_list(struct ID *id, GHash *weakinfo_hash);
224 static PyObject *id_free_weakref_cb(PyObject *weakinfo_capsule, PyObject *weakref)
225 {
226         /* important to search backwards */
227         GHash *weakinfo_hash = PyCapsule_GetPointer(weakinfo_capsule, NULL);
228
229
230         if (BLI_ghash_size(weakinfo_hash) > 1) {
231                 BLI_ghash_remove(weakinfo_hash, weakref, NULL, NULL);
232         }
233         else { /* get the last id and free it */
234                 BLI_ghash_remove(weakinfo_hash, weakref, NULL, value_id_set);
235                 id_release_weakref_list(_id_tmp_ptr, weakinfo_hash);
236         }
237
238         Py_DECREF(weakref);
239
240         Py_RETURN_NONE;
241 }
242
243 static void id_release_weakref_list(struct ID *id, GHash *weakinfo_hash)
244 {
245         GHashIterator weakinfo_hash_iter;
246
247         BLI_ghashIterator_init(&weakinfo_hash_iter, weakinfo_hash);
248
249 #ifdef DEBUG_RNA_WEAKREF
250         fprintf(stdout, "id_release_weakref: '%s', %d items\n", id->name, BLI_ghash_size(weakinfo_hash));
251 #endif
252
253         while (!BLI_ghashIterator_done(&weakinfo_hash_iter)) {
254                 PyObject *weakref = (PyObject *)BLI_ghashIterator_getKey(&weakinfo_hash_iter);
255                 PyObject *item = PyWeakref_GET_OBJECT(weakref);
256                 if (item != Py_None) {
257
258 #ifdef DEBUG_RNA_WEAKREF
259                         PyC_ObSpit("id_release_weakref item ", item);
260 #endif
261
262                         pyrna_invalidate((BPy_DummyPointerRNA *)item);
263                 }
264
265                 Py_DECREF(weakref);
266
267                 BLI_ghashIterator_step(&weakinfo_hash_iter);
268         }
269
270         BLI_ghash_remove(id_weakref_pool, (void *)id, NULL, NULL);
271         BLI_ghash_free(weakinfo_hash, NULL, NULL);
272
273         if (BLI_ghash_size(id_weakref_pool) == 0) {
274                 BLI_ghash_free(id_weakref_pool, NULL, NULL);
275                 id_weakref_pool = NULL;
276 #ifdef DEBUG_RNA_WEAKREF
277                 printf("id_release_weakref freeing pool\n");
278 #endif
279         }
280 }
281
282 static void id_release_weakref(struct ID *id)
283 {
284         GHash *weakinfo_hash = BLI_ghash_lookup(id_weakref_pool, (void *)id);
285         if (weakinfo_hash) {
286                 id_release_weakref_list(id, weakinfo_hash);
287         }
288 }
289
290 #endif /* USE_PYRNA_INVALIDATE_WEAKREF */
291
292 void BPY_id_release(struct ID *id)
293 {
294 #ifdef USE_PYRNA_INVALIDATE_GC
295         id_release_gc(id);
296 #endif
297
298 #ifdef USE_PYRNA_INVALIDATE_WEAKREF
299         if (id_weakref_pool) {
300                 PyGILState_STATE gilstate = PyGILState_Ensure();
301
302                 id_release_weakref(id);
303
304                 PyGILState_Release(gilstate);
305         }
306 #endif /* USE_PYRNA_INVALIDATE_WEAKREF */
307
308         (void)id;
309 }
310
311 #ifdef USE_PEDANTIC_WRITE
312 static bool rna_disallow_writes = false;
313
314 static bool rna_id_write_error(PointerRNA *ptr, PyObject *key)
315 {
316         ID *id = ptr->id.data;
317         if (id) {
318                 const short idcode = GS(id->name);
319                 if (!ELEM(idcode, ID_WM, ID_SCR)) { /* may need more added here */
320                         const char *idtype = BKE_idcode_to_name(idcode);
321                         const char *pyname;
322                         if (key && PyUnicode_Check(key)) pyname = _PyUnicode_AsString(key);
323                         else                             pyname = "<UNKNOWN>";
324
325                         /* make a nice string error */
326                         BLI_assert(idtype != NULL);
327                         PyErr_Format(PyExc_AttributeError,
328                                      "Writing to ID classes in this context is not allowed: "
329                                      "%.200s, %.200s datablock, error setting %.200s.%.200s",
330                                      id->name + 2, idtype, RNA_struct_identifier(ptr->type), pyname);
331
332                         return true;
333                 }
334         }
335         return false;
336 }
337 #endif  /* USE_PEDANTIC_WRITE */
338
339
340 #ifdef USE_PEDANTIC_WRITE
341 bool pyrna_write_check(void)
342 {
343         return !rna_disallow_writes;
344 }
345
346 void pyrna_write_set(bool val)
347 {
348         rna_disallow_writes = !val;
349 }
350 #else  /* USE_PEDANTIC_WRITE */
351 bool pyrna_write_check(void)
352 {
353         return true;
354 }
355 void pyrna_write_set(bool UNUSED(val))
356 {
357         /* nothing */
358 }
359 #endif  /* USE_PEDANTIC_WRITE */
360
361 static Py_ssize_t pyrna_prop_collection_length(BPy_PropertyRNA *self);
362 static Py_ssize_t pyrna_prop_array_length(BPy_PropertyArrayRNA *self);
363 static int pyrna_py_to_prop(PointerRNA *ptr, PropertyRNA *prop, void *data, PyObject *value, const char *error_prefix);
364 static int deferred_register_prop(StructRNA *srna, PyObject *key, PyObject *item);
365
366 #ifdef USE_MATHUTILS
367 #include "../mathutils/mathutils.h" /* so we can have mathutils callbacks */
368
369 static PyObject *pyrna_prop_array_subscript_slice(BPy_PropertyArrayRNA *self, PointerRNA *ptr, PropertyRNA *prop,
370                                                   Py_ssize_t start, Py_ssize_t stop, Py_ssize_t length);
371 static short pyrna_rotation_euler_order_get(PointerRNA *ptr, PropertyRNA **prop_eul_order, const short order_fallback);
372
373 /* bpyrna vector/euler/quat callbacks */
374 static unsigned char mathutils_rna_array_cb_index = -1; /* index for our callbacks */
375
376 /* subtype not used much yet */
377 #define MATHUTILS_CB_SUBTYPE_EUL 0
378 #define MATHUTILS_CB_SUBTYPE_VEC 1
379 #define MATHUTILS_CB_SUBTYPE_QUAT 2
380 #define MATHUTILS_CB_SUBTYPE_COLOR 3
381
382 static int mathutils_rna_generic_check(BaseMathObject *bmo)
383 {
384         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
385
386         PYRNA_PROP_CHECK_INT(self);
387
388         return self->prop ? 0 : -1;
389 }
390
391 static int mathutils_rna_vector_get(BaseMathObject *bmo, int subtype)
392 {
393         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
394
395         PYRNA_PROP_CHECK_INT(self);
396
397         if (self->prop == NULL)
398                 return -1;
399
400         RNA_property_float_get_array(&self->ptr, self->prop, bmo->data);
401
402         /* Euler order exception */
403         if (subtype == MATHUTILS_CB_SUBTYPE_EUL) {
404                 EulerObject *eul = (EulerObject *)bmo;
405                 PropertyRNA *prop_eul_order = NULL;
406                 eul->order = pyrna_rotation_euler_order_get(&self->ptr, &prop_eul_order, eul->order);
407         }
408
409         return 0;
410 }
411
412 static int mathutils_rna_vector_set(BaseMathObject *bmo, int subtype)
413 {
414         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
415         float min, max;
416
417         PYRNA_PROP_CHECK_INT(self);
418
419         if (self->prop == NULL)
420                 return -1;
421
422 #ifdef USE_PEDANTIC_WRITE
423         if (rna_disallow_writes && rna_id_write_error(&self->ptr, NULL)) {
424                 return -1;
425         }
426 #endif  /* USE_PEDANTIC_WRITE */
427
428         if (!RNA_property_editable_flag(&self->ptr, self->prop)) {
429                 PyErr_Format(PyExc_AttributeError,
430                              "bpy_prop \"%.200s.%.200s\" is read-only",
431                              RNA_struct_identifier(self->ptr.type), RNA_property_identifier(self->prop));
432                 return -1;
433         }
434
435         RNA_property_float_range(&self->ptr, self->prop, &min, &max);
436
437         if (min != -FLT_MAX || max != FLT_MAX) {
438                 int i, len = RNA_property_array_length(&self->ptr, self->prop);
439                 for (i = 0; i < len; i++) {
440                         CLAMP(bmo->data[i], min, max);
441                 }
442         }
443
444         RNA_property_float_set_array(&self->ptr, self->prop, bmo->data);
445         if (RNA_property_update_check(self->prop)) {
446                 RNA_property_update(BPy_GetContext(), &self->ptr, self->prop);
447         }
448
449         /* Euler order exception */
450         if (subtype == MATHUTILS_CB_SUBTYPE_EUL) {
451                 EulerObject *eul = (EulerObject *)bmo;
452                 PropertyRNA *prop_eul_order = NULL;
453                 short order = pyrna_rotation_euler_order_get(&self->ptr, &prop_eul_order, eul->order);
454                 if (order != eul->order) {
455                         RNA_property_enum_set(&self->ptr, prop_eul_order, eul->order);
456                         if (RNA_property_update_check(prop_eul_order)) {
457                                 RNA_property_update(BPy_GetContext(), &self->ptr, prop_eul_order);
458                         }
459                 }
460         }
461         return 0;
462 }
463
464 static int mathutils_rna_vector_get_index(BaseMathObject *bmo, int UNUSED(subtype), int index)
465 {
466         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
467
468         PYRNA_PROP_CHECK_INT(self);
469
470         if (self->prop == NULL)
471                 return -1;
472
473         bmo->data[index] = RNA_property_float_get_index(&self->ptr, self->prop, index);
474         return 0;
475 }
476
477 static int mathutils_rna_vector_set_index(BaseMathObject *bmo, int UNUSED(subtype), int index)
478 {
479         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
480
481         PYRNA_PROP_CHECK_INT(self);
482
483         if (self->prop == NULL)
484                 return -1;
485
486 #ifdef USE_PEDANTIC_WRITE
487         if (rna_disallow_writes && rna_id_write_error(&self->ptr, NULL)) {
488                 return -1;
489         }
490 #endif  /* USE_PEDANTIC_WRITE */
491
492         if (!RNA_property_editable_flag(&self->ptr, self->prop)) {
493                 PyErr_Format(PyExc_AttributeError,
494                              "bpy_prop \"%.200s.%.200s\" is read-only",
495                              RNA_struct_identifier(self->ptr.type), RNA_property_identifier(self->prop));
496                 return -1;
497         }
498
499         RNA_property_float_clamp(&self->ptr, self->prop, &bmo->data[index]);
500         RNA_property_float_set_index(&self->ptr, self->prop, index, bmo->data[index]);
501
502         if (RNA_property_update_check(self->prop)) {
503                 RNA_property_update(BPy_GetContext(), &self->ptr, self->prop);
504         }
505
506         return 0;
507 }
508
509 static Mathutils_Callback mathutils_rna_array_cb = {
510         (BaseMathCheckFunc)     mathutils_rna_generic_check,
511         (BaseMathGetFunc)       mathutils_rna_vector_get,
512         (BaseMathSetFunc)       mathutils_rna_vector_set,
513         (BaseMathGetIndexFunc)  mathutils_rna_vector_get_index,
514         (BaseMathSetIndexFunc)  mathutils_rna_vector_set_index
515 };
516
517
518 /* bpyrna matrix callbacks */
519 static unsigned char mathutils_rna_matrix_cb_index = -1; /* index for our callbacks */
520
521 static int mathutils_rna_matrix_get(BaseMathObject *bmo, int UNUSED(subtype))
522 {
523         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
524
525         PYRNA_PROP_CHECK_INT(self);
526
527         if (self->prop == NULL)
528                 return -1;
529
530         RNA_property_float_get_array(&self->ptr, self->prop, bmo->data);
531         return 0;
532 }
533
534 static int mathutils_rna_matrix_set(BaseMathObject *bmo, int UNUSED(subtype))
535 {
536         BPy_PropertyRNA *self = (BPy_PropertyRNA *)bmo->cb_user;
537
538         PYRNA_PROP_CHECK_INT(self);
539
540         if (self->prop == NULL)
541                 return -1;
542
543 #ifdef USE_PEDANTIC_WRITE
544         if (rna_disallow_writes && rna_id_write_error(&self->ptr, NULL)) {
545                 return -1;
546         }
547 #endif  /* USE_PEDANTIC_WRITE */
548
549         if (!RNA_property_editable_flag(&self->ptr, self->prop)) {
550                 PyErr_Format(PyExc_AttributeError,
551                              "bpy_prop \"%.200s.%.200s\" is read-only",
552                              RNA_struct_identifier(self->ptr.type), RNA_property_identifier(self->prop));
553                 return -1;
554         }
555
556         /* can ignore clamping here */
557         RNA_property_float_set_array(&self->ptr, self->prop, bmo->data);
558
559         if (RNA_property_update_check(self->prop)) {
560                 RNA_property_update(BPy_GetContext(), &self->ptr, self->prop);
561         }
562         return 0;
563 }
564
565 static Mathutils_Callback mathutils_rna_matrix_cb = {
566         mathutils_rna_generic_check,
567         mathutils_rna_matrix_get,
568         mathutils_rna_matrix_set,
569         NULL,
570         NULL
571 };
572
573 static short pyrna_rotation_euler_order_get(PointerRNA *ptr, PropertyRNA **prop_eul_order, const short order_fallback)
574 {
575         /* attempt to get order */
576         if (*prop_eul_order == NULL)
577                 *prop_eul_order = RNA_struct_find_property(ptr, "rotation_mode");
578
579         if (*prop_eul_order) {
580                 short order = RNA_property_enum_get(ptr, *prop_eul_order);
581                 if (order >= EULER_ORDER_XYZ && order <= EULER_ORDER_ZYX) /* could be quat or axisangle */
582                         return order;
583         }
584
585         return order_fallback;
586 }
587
588 #endif  /* USE_MATHUTILS */
589
590 /* note that PROP_NONE is included as a vector subtype. this is because its handy to
591  * have x/y access to fcurve keyframes and other fixed size float arrays of length 2-4. */
592 #define PROP_ALL_VECTOR_SUBTYPES                                              \
593              PROP_COORDS:                                                         \
594         case PROP_TRANSLATION:                                                    \
595         case PROP_DIRECTION:                                                      \
596         case PROP_VELOCITY:                                                       \
597         case PROP_ACCELERATION:                                                   \
598         case PROP_XYZ:                                                            \
599         case PROP_XYZ_LENGTH                                                      \
600
601
602 PyObject *pyrna_math_object_from_array(PointerRNA *ptr, PropertyRNA *prop)
603 {
604         PyObject *ret = NULL;
605
606 #ifdef USE_MATHUTILS
607         int subtype, totdim;
608         int len;
609         bool is_thick;
610         const int flag = RNA_property_flag(prop);
611
612         /* disallow dynamic sized arrays to be wrapped since the size could change
613          * to a size mathutils does not support */
614         if ((RNA_property_type(prop) != PROP_FLOAT) || (flag & PROP_DYNAMIC))
615                 return NULL;
616
617         len = RNA_property_array_length(ptr, prop);
618         subtype = RNA_property_subtype(prop);
619         totdim = RNA_property_array_dimension(ptr, prop, NULL);
620         is_thick = (flag & PROP_THICK_WRAP) != 0;
621
622         if (totdim == 1 || (totdim == 2 && subtype == PROP_MATRIX)) {
623                 if (!is_thick)
624                         ret = pyrna_prop_CreatePyObject(ptr, prop);  /* owned by the mathutils PyObject */
625
626                 switch (subtype) {
627                         case PROP_ALL_VECTOR_SUBTYPES:
628                                 if (len >= 2 && len <= 4) {
629                                         if (is_thick) {
630                                                 ret = Vector_CreatePyObject(NULL, len, Py_NEW, NULL);
631                                                 RNA_property_float_get_array(ptr, prop, ((VectorObject *)ret)->vec);
632                                         }
633                                         else {
634                                                 PyObject *vec_cb = Vector_CreatePyObject_cb(ret, len, mathutils_rna_array_cb_index, MATHUTILS_CB_SUBTYPE_VEC);
635                                                 Py_DECREF(ret); /* the vector owns now */
636                                                 ret = vec_cb; /* return the vector instead */
637                                         }
638                                 }
639                                 break;
640                         case PROP_MATRIX:
641                                 if (len == 16) {
642                                         if (is_thick) {
643                                                 ret = Matrix_CreatePyObject(NULL, 4, 4, Py_NEW, NULL);
644                                                 RNA_property_float_get_array(ptr, prop, ((MatrixObject *)ret)->matrix);
645                                         }
646                                         else {
647                                                 PyObject *mat_cb = Matrix_CreatePyObject_cb(ret, 4, 4, mathutils_rna_matrix_cb_index, 0);
648                                                 Py_DECREF(ret); /* the matrix owns now */
649                                                 ret = mat_cb; /* return the matrix instead */
650                                         }
651                                 }
652                                 else if (len == 9) {
653                                         if (is_thick) {
654                                                 ret = Matrix_CreatePyObject(NULL, 3, 3, Py_NEW, NULL);
655                                                 RNA_property_float_get_array(ptr, prop, ((MatrixObject *)ret)->matrix);
656                                         }
657                                         else {
658                                                 PyObject *mat_cb = Matrix_CreatePyObject_cb(ret, 3, 3, mathutils_rna_matrix_cb_index, 0);
659                                                 Py_DECREF(ret); /* the matrix owns now */
660                                                 ret = mat_cb; /* return the matrix instead */
661                                         }
662                                 }
663                                 break;
664                         case PROP_EULER:
665                         case PROP_QUATERNION:
666                                 if (len == 3) { /* euler */
667                                         if (is_thick) {
668                                                 /* attempt to get order, only needed for thick types since wrapped with update via callbacks */
669                                                 PropertyRNA *prop_eul_order = NULL;
670                                                 short order = pyrna_rotation_euler_order_get(ptr, &prop_eul_order, EULER_ORDER_XYZ);
671
672                                                 ret = Euler_CreatePyObject(NULL, order, Py_NEW, NULL);  /* TODO, get order from RNA */
673                                                 RNA_property_float_get_array(ptr, prop, ((EulerObject *)ret)->eul);
674                                         }
675                                         else {
676                                                 /* order will be updated from callback on use */
677                                                 PyObject *eul_cb = Euler_CreatePyObject_cb(ret, EULER_ORDER_XYZ, mathutils_rna_array_cb_index, MATHUTILS_CB_SUBTYPE_EUL); // TODO, get order from RNA
678                                                 Py_DECREF(ret); /* the euler owns now */
679                                                 ret = eul_cb; /* return the euler instead */
680                                         }
681                                 }
682                                 else if (len == 4) {
683                                         if (is_thick) {
684                                                 ret = Quaternion_CreatePyObject(NULL, Py_NEW, NULL);
685                                                 RNA_property_float_get_array(ptr, prop, ((QuaternionObject *)ret)->quat);
686                                         }
687                                         else {
688                                                 PyObject *quat_cb = Quaternion_CreatePyObject_cb(ret, mathutils_rna_array_cb_index, MATHUTILS_CB_SUBTYPE_QUAT);
689                                                 Py_DECREF(ret); /* the quat owns now */
690                                                 ret = quat_cb; /* return the quat instead */
691                                         }
692                                 }
693                                 break;
694                         case PROP_COLOR:
695                         case PROP_COLOR_GAMMA:
696                                 if (len == 3) { /* color */
697                                         if (is_thick) {
698                                                 ret = Color_CreatePyObject(NULL, Py_NEW, NULL);
699                                                 RNA_property_float_get_array(ptr, prop, ((ColorObject *)ret)->col);
700                                         }
701                                         else {
702                                                 PyObject *col_cb = Color_CreatePyObject_cb(ret, mathutils_rna_array_cb_index, MATHUTILS_CB_SUBTYPE_COLOR);
703                                                 Py_DECREF(ret); /* the color owns now */
704                                                 ret = col_cb; /* return the color instead */
705                                         }
706                                 }
707                                 break;
708                         default:
709                                 break;
710                 }
711         }
712
713         if (ret == NULL) {
714                 if (is_thick) {
715                         /* this is an array we cant reference (since its not thin wrappable)
716                          * and cannot be coerced into a mathutils type, so return as a list */
717                         ret = pyrna_prop_array_subscript_slice(NULL, ptr, prop, 0, len, len);
718                 }
719                 else {
720                         ret = pyrna_prop_CreatePyObject(ptr, prop); /* owned by the mathutils PyObject */
721                 }
722         }
723 #else  /* USE_MATHUTILS */
724         (void)ptr;
725         (void)prop;
726 #endif  /* USE_MATHUTILS */
727
728         return ret;
729 }
730
731 /* same as RNA_enum_value_from_id but raises an exception */
732 int pyrna_enum_value_from_id(EnumPropertyItem *item, const char *identifier, int *value, const char *error_prefix)
733 {
734         if (RNA_enum_value_from_id(item, identifier, value) == 0) {
735                 const char *enum_str = BPy_enum_as_string(item);
736                 PyErr_Format(PyExc_ValueError,
737                              "%s: '%.200s' not found in (%s)",
738                              error_prefix, identifier, enum_str);
739                 MEM_freeN((void *)enum_str);
740                 return -1;
741         }
742
743         return 0;
744 }
745
746 /* note on __cmp__:
747  * checking the 'ptr->data' matches works in almost all cases,
748  * however there are a few RNA properties that are fake sub-structs and
749  * share the pointer with the parent, in those cases this happens 'a.b == a'
750  * see: r43352 for example.
751  *
752  * So compare the 'ptr->type' as well to avoid this problem.
753  * It's highly unlikely this would happen that 'ptr->data' and 'ptr->prop' would match,
754  * but _not_ 'ptr->type' but include this check for completeness.
755  * - campbell */
756
757 static int pyrna_struct_compare(BPy_StructRNA *a, BPy_StructRNA *b)
758 {
759         return (((a->ptr.data == b->ptr.data) &&
760                  (a->ptr.type == b->ptr.type)) ? 0 : -1);
761 }
762
763 static int pyrna_prop_compare(BPy_PropertyRNA *a, BPy_PropertyRNA *b)
764 {
765         return (((a->prop == b->prop) &&
766                  (a->ptr.data == b->ptr.data) &&
767                  (a->ptr.type == b->ptr.type)) ? 0 : -1);
768 }
769
770 static PyObject *pyrna_struct_richcmp(PyObject *a, PyObject *b, int op)
771 {
772         PyObject *res;
773         int ok = -1; /* zero is true */
774
775         if (BPy_StructRNA_Check(a) && BPy_StructRNA_Check(b))
776                 ok = pyrna_struct_compare((BPy_StructRNA *)a, (BPy_StructRNA *)b);
777
778         switch (op) {
779                 case Py_NE:
780                         ok = !ok;
781                         /* fall-through */
782                 case Py_EQ:
783                         res = ok ? Py_False : Py_True;
784                         break;
785
786                 case Py_LT:
787                 case Py_LE:
788                 case Py_GT:
789                 case Py_GE:
790                         res = Py_NotImplemented;
791                         break;
792                 default:
793                         PyErr_BadArgument();
794                         return NULL;
795         }
796
797         return Py_INCREF(res), res;
798 }
799
800 static PyObject *pyrna_prop_richcmp(PyObject *a, PyObject *b, int op)
801 {
802         PyObject *res;
803         int ok = -1; /* zero is true */
804
805         if (BPy_PropertyRNA_Check(a) && BPy_PropertyRNA_Check(b))
806                 ok = pyrna_prop_compare((BPy_PropertyRNA *)a, (BPy_PropertyRNA *)b);
807
808         switch (op) {
809                 case Py_NE:
810                         ok = !ok;
811                         /* fall-through */
812                 case Py_EQ:
813                         res = ok ? Py_False : Py_True;
814                         break;
815
816                 case Py_LT:
817                 case Py_LE:
818                 case Py_GT:
819                 case Py_GE:
820                         res = Py_NotImplemented;
821                         break;
822                 default:
823                         PyErr_BadArgument();
824                         return NULL;
825         }
826
827         return Py_INCREF(res), res;
828 }
829
830 /*----------------------repr--------------------------------------------*/
831 static PyObject *pyrna_struct_str(BPy_StructRNA *self)
832 {
833         PyObject *ret;
834         const char *name;
835
836         if (!PYRNA_STRUCT_IS_VALID(self)) {
837                 return PyUnicode_FromFormat("<bpy_struct, %.200s invalid>",
838                                             Py_TYPE(self)->tp_name);
839         }
840
841         /* print name if available */
842         name = RNA_struct_name_get_alloc(&self->ptr, NULL, 0, NULL);
843         if (name) {
844                 ret = PyUnicode_FromFormat("<bpy_struct, %.200s(\"%.200s\")>",
845                                            RNA_struct_identifier(self->ptr.type),
846                                            name);
847                 MEM_freeN((void *)name);
848                 return ret;
849         }
850
851         return PyUnicode_FromFormat("<bpy_struct, %.200s at %p>",
852                                     RNA_struct_identifier(self->ptr.type),
853                                     self->ptr.data);
854 }
855
856 static PyObject *pyrna_struct_repr(BPy_StructRNA *self)
857 {
858         ID *id = self->ptr.id.data;
859         PyObject *tmp_str;
860         PyObject *ret;
861
862         if (id == NULL || !PYRNA_STRUCT_IS_VALID(self))
863                 return pyrna_struct_str(self);  /* fallback */
864
865         tmp_str = PyUnicode_FromString(id->name + 2);
866
867         if (RNA_struct_is_ID(self->ptr.type)) {
868                 ret = PyUnicode_FromFormat("bpy.data.%s[%R]",
869                                            BKE_idcode_to_name_plural(GS(id->name)),
870                                            tmp_str);
871         }
872         else {
873                 const char *path;
874                 path = RNA_path_from_ID_to_struct(&self->ptr);
875                 if (path) {
876                         if (GS(id->name) == ID_NT) { /* nodetree paths are not accurate */
877                                 ret = PyUnicode_FromFormat("bpy.data...%s",
878                                                            path);
879                         }
880                         else {
881                                 ret = PyUnicode_FromFormat("bpy.data.%s[%R].%s",
882                                                            BKE_idcode_to_name_plural(GS(id->name)),
883                                                            tmp_str,
884                                                            path);
885                         }
886
887                         MEM_freeN((void *)path);
888                 }
889                 else { /* cant find, print something sane */
890                         ret = PyUnicode_FromFormat("bpy.data.%s[%R]...%s",
891                                                    BKE_idcode_to_name_plural(GS(id->name)),
892                                                    tmp_str,
893                                                    RNA_struct_identifier(self->ptr.type));
894                 }
895         }
896
897         Py_DECREF(tmp_str);
898
899         return ret;
900 }
901
902 static PyObject *pyrna_prop_str(BPy_PropertyRNA *self)
903 {
904         PyObject *ret;
905         PointerRNA ptr;
906         const char *name;
907         const char *type_id = NULL;
908         char type_fmt[64] = "";
909         int type;
910
911         PYRNA_PROP_CHECK_OBJ(self);
912
913         type = RNA_property_type(self->prop);
914
915         if (RNA_enum_id_from_value(property_type_items, type, &type_id) == 0) {
916                 PyErr_SetString(PyExc_RuntimeError, "could not use property type, internal error"); /* should never happen */
917                 return NULL;
918         }
919         else {
920                 /* this should never fail */
921                 int len = -1;
922                 char *c = type_fmt;
923
924                 while ((*c++ = tolower(*type_id++))) {}
925
926                 if (type == PROP_COLLECTION) {
927                         len = pyrna_prop_collection_length(self);
928                 }
929                 else if (RNA_property_array_check(self->prop)) {
930                         len = pyrna_prop_array_length((BPy_PropertyArrayRNA *)self);
931                 }
932
933                 if (len != -1)
934                         sprintf(--c, "[%d]", len);
935         }
936
937         /* if a pointer, try to print name of pointer target too */
938         if (type == PROP_POINTER) {
939                 ptr = RNA_property_pointer_get(&self->ptr, self->prop);
940                 name = RNA_struct_name_get_alloc(&ptr, NULL, 0, NULL);
941
942                 if (name) {
943                         ret = PyUnicode_FromFormat("<bpy_%.200s, %.200s.%.200s(\"%.200s\")>",
944                                                    type_fmt,
945                                                    RNA_struct_identifier(self->ptr.type),
946                                                    RNA_property_identifier(self->prop),
947                                                    name);
948                         MEM_freeN((void *)name);
949                         return ret;
950                 }
951         }
952         if (type == PROP_COLLECTION) {
953                 PointerRNA r_ptr;
954                 if (RNA_property_collection_type_get(&self->ptr, self->prop, &r_ptr)) {
955                         return PyUnicode_FromFormat("<bpy_%.200s, %.200s>",
956                                                     type_fmt,
957                                                     RNA_struct_identifier(r_ptr.type));
958                 }
959         }
960
961         return PyUnicode_FromFormat("<bpy_%.200s, %.200s.%.200s>",
962                                     type_fmt,
963                                     RNA_struct_identifier(self->ptr.type),
964                                     RNA_property_identifier(self->prop));
965 }
966
967 static PyObject *pyrna_prop_repr(BPy_PropertyRNA *self)
968 {
969         ID *id = self->ptr.id.data;
970         PyObject *tmp_str;
971         PyObject *ret;
972         const char *path;
973
974         PYRNA_PROP_CHECK_OBJ(self);
975
976         if (id == NULL)
977                 return pyrna_prop_str(self);  /* fallback */
978
979         tmp_str = PyUnicode_FromString(id->name + 2);
980
981         path = RNA_path_from_ID_to_property(&self->ptr, self->prop);
982         if (path) {
983                 if (GS(id->name) == ID_NT) { /* nodetree paths are not accurate */
984                         ret = PyUnicode_FromFormat("bpy.data...%s",
985                                                    path);
986                 }
987                 else {
988                         ret = PyUnicode_FromFormat("bpy.data.%s[%R].%s",
989                                                    BKE_idcode_to_name_plural(GS(id->name)),
990                                                    tmp_str,
991                                                    path);
992                 }
993
994                 MEM_freeN((void *)path);
995         }
996         else { /* cant find, print something sane */
997                 ret = PyUnicode_FromFormat("bpy.data.%s[%R]...%s",
998                                            BKE_idcode_to_name_plural(GS(id->name)),
999                                            tmp_str,
1000                                            RNA_property_identifier(self->prop));
1001         }
1002
1003         Py_DECREF(tmp_str);
1004
1005         return ret;
1006 }
1007
1008
1009 static PyObject *pyrna_func_repr(BPy_FunctionRNA *self)
1010 {
1011         return PyUnicode_FromFormat("<%.200s %.200s.%.200s()>",
1012                                     Py_TYPE(self)->tp_name,
1013                                     RNA_struct_identifier(self->ptr.type),
1014                                     RNA_function_identifier(self->func));
1015 }
1016
1017
1018 static Py_hash_t pyrna_struct_hash(BPy_StructRNA *self)
1019 {
1020         return _Py_HashPointer(self->ptr.data);
1021 }
1022
1023 /* from python's meth_hash v3.1.2 */
1024 static long pyrna_prop_hash(BPy_PropertyRNA *self)
1025 {
1026         long x, y;
1027         if (self->ptr.data == NULL)
1028                 x = 0;
1029         else {
1030                 x = _Py_HashPointer(self->ptr.data);
1031                 if (x == -1)
1032                         return -1;
1033         }
1034         y = _Py_HashPointer((void *)(self->prop));
1035         if (y == -1)
1036                 return -1;
1037         x ^= y;
1038         if (x == -1)
1039                 x = -2;
1040         return x;
1041 }
1042
1043 #ifdef USE_PYRNA_STRUCT_REFERENCE
1044 static int pyrna_struct_traverse(BPy_StructRNA *self, visitproc visit, void *arg)
1045 {
1046         Py_VISIT(self->reference);
1047         return 0;
1048 }
1049
1050 static int pyrna_struct_clear(BPy_StructRNA *self)
1051 {
1052         Py_CLEAR(self->reference);
1053         return 0;
1054 }
1055 #endif /* !USE_PYRNA_STRUCT_REFERENCE */
1056
1057 /* use our own dealloc so we can free a property if we use one */
1058 static void pyrna_struct_dealloc(BPy_StructRNA *self)
1059 {
1060 #ifdef PYRNA_FREE_SUPPORT
1061         if (self->freeptr && self->ptr.data) {
1062                 IDP_FreeProperty(self->ptr.data);
1063                 MEM_freeN(self->ptr.data);
1064                 self->ptr.data = NULL;
1065         }
1066 #endif /* PYRNA_FREE_SUPPORT */
1067
1068 #ifdef USE_WEAKREFS
1069         if (self->in_weakreflist != NULL) {
1070                 PyObject_ClearWeakRefs((PyObject *)self);
1071         }
1072 #endif
1073
1074 #ifdef USE_PYRNA_STRUCT_REFERENCE
1075         if (self->reference) {
1076                 PyObject_GC_UnTrack(self);
1077                 pyrna_struct_clear(self);
1078         }
1079 #endif /* !USE_PYRNA_STRUCT_REFERENCE */
1080
1081         /* Note, for subclassed PyObjects we cant just call PyObject_DEL() directly or it will crash */
1082         Py_TYPE(self)->tp_free(self);
1083 }
1084
1085 #ifdef USE_PYRNA_STRUCT_REFERENCE
1086 static void pyrna_struct_reference_set(BPy_StructRNA *self, PyObject *reference)
1087 {
1088         if (self->reference) {
1089 //              PyObject_GC_UnTrack(self); /* INITIALIZED TRACKED ? */
1090                 pyrna_struct_clear(self);
1091         }
1092         /* reference is now NULL */
1093
1094         if (reference) {
1095                 self->reference = reference;
1096                 Py_INCREF(reference);
1097 //              PyObject_GC_Track(self);  /* INITIALIZED TRACKED ? */
1098         }
1099 }
1100 #endif /* !USE_PYRNA_STRUCT_REFERENCE */
1101
1102 /* use our own dealloc so we can free a property if we use one */
1103 static void pyrna_prop_dealloc(BPy_PropertyRNA *self)
1104 {
1105 #ifdef USE_WEAKREFS
1106         if (self->in_weakreflist != NULL) {
1107                 PyObject_ClearWeakRefs((PyObject *)self);
1108         }
1109 #endif
1110         /* Note, for subclassed PyObjects we cant just call PyObject_DEL() directly or it will crash */
1111         Py_TYPE(self)->tp_free(self);
1112 }
1113
1114 static void pyrna_prop_array_dealloc(BPy_PropertyRNA *self)
1115 {
1116 #ifdef USE_WEAKREFS
1117         if (self->in_weakreflist != NULL) {
1118                 PyObject_ClearWeakRefs((PyObject *)self);
1119         }
1120 #endif
1121         /* Note, for subclassed PyObjects we cant just call PyObject_DEL() directly or it will crash */
1122         Py_TYPE(self)->tp_free(self);
1123 }
1124
1125 static const char *pyrna_enum_as_string(PointerRNA *ptr, PropertyRNA *prop)
1126 {
1127         EnumPropertyItem *item;
1128         const char *result;
1129         bool free = false;
1130
1131         RNA_property_enum_items(BPy_GetContext(), ptr, prop, &item, NULL, &free);
1132         if (item) {
1133                 result = BPy_enum_as_string(item);
1134         }
1135         else {
1136                 result = "";
1137         }
1138
1139         if (free)
1140                 MEM_freeN(item);
1141
1142         return result;
1143 }
1144
1145
1146 static int pyrna_string_to_enum(PyObject *item, PointerRNA *ptr, PropertyRNA *prop, int *val, const char *error_prefix)
1147 {
1148         const char *param = _PyUnicode_AsString(item);
1149
1150         if (param == NULL) {
1151                 PyErr_Format(PyExc_TypeError,
1152                              "%.200s expected a string enum, not %.200s",
1153                              error_prefix, Py_TYPE(item)->tp_name);
1154                 return -1;
1155         }
1156         else {
1157                 if (!RNA_property_enum_value(BPy_GetContext(), ptr, prop, param, val)) {
1158                         const char *enum_str = pyrna_enum_as_string(ptr, prop);
1159                         PyErr_Format(PyExc_TypeError,
1160                                      "%.200s enum \"%.200s\" not found in (%.200s)",
1161                                      error_prefix, param, enum_str);
1162                         MEM_freeN((void *)enum_str);
1163                         return -1;
1164                 }
1165         }
1166
1167         return 0;
1168 }
1169
1170 /* 'value' _must_ be a set type, error check before calling */
1171 int pyrna_set_to_enum_bitfield(EnumPropertyItem *items, PyObject *value, int *r_value, const char *error_prefix)
1172 {
1173         /* set of enum items, concatenate all values with OR */
1174         int ret, flag = 0;
1175
1176         /* set looping */
1177         Py_ssize_t pos = 0;
1178         Py_ssize_t hash = 0;
1179         PyObject *key;
1180
1181         *r_value = 0;
1182
1183         while (_PySet_NextEntry(value, &pos, &key, &hash)) {
1184                 const char *param = _PyUnicode_AsString(key);
1185
1186                 if (param == NULL) {
1187                         PyErr_Format(PyExc_TypeError,
1188                                      "%.200s expected a string, not %.200s",
1189                                      error_prefix, Py_TYPE(key)->tp_name);
1190                         return -1;
1191                 }
1192
1193                 if (pyrna_enum_value_from_id(items, param, &ret, error_prefix) == -1) {
1194                         return -1;
1195                 }
1196
1197                 flag |= ret;
1198         }
1199
1200         *r_value = flag;
1201         return 0;
1202 }
1203
1204 static int pyrna_prop_to_enum_bitfield(PointerRNA *ptr, PropertyRNA *prop, PyObject *value, int *r_value, const char *error_prefix)
1205 {
1206         EnumPropertyItem *item;
1207         int ret;
1208         bool free = false;
1209
1210         *r_value = 0;
1211
1212         if (!PyAnySet_Check(value)) {
1213                 PyErr_Format(PyExc_TypeError,
1214                              "%.200s, %.200s.%.200s expected a set, not a %.200s",
1215                              error_prefix, RNA_struct_identifier(ptr->type),
1216                              RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1217                 return -1;
1218         }
1219
1220         RNA_property_enum_items(BPy_GetContext(), ptr, prop, &item, NULL, &free);
1221
1222         if (item) {
1223                 ret = pyrna_set_to_enum_bitfield(item, value, r_value, error_prefix);
1224         }
1225         else {
1226                 if (PySet_GET_SIZE(value)) {
1227                         PyErr_Format(PyExc_TypeError,
1228                                      "%.200s: empty enum \"%.200s\" could not have any values assigned",
1229                                      error_prefix, RNA_property_identifier(prop));
1230                         ret = -1;
1231                 }
1232                 else {
1233                         ret = 0;
1234                 }
1235         }
1236
1237         if (free)
1238                 MEM_freeN(item);
1239
1240         return ret;
1241 }
1242
1243 PyObject *pyrna_enum_bitfield_to_py(EnumPropertyItem *items, int value)
1244 {
1245         PyObject *ret = PySet_New(NULL);
1246         const char *identifier[RNA_ENUM_BITFLAG_SIZE + 1];
1247
1248         if (RNA_enum_bitflag_identifiers(items, value, identifier)) {
1249                 PyObject *item;
1250                 int index;
1251                 for (index = 0; identifier[index]; index++) {
1252                         item = PyUnicode_FromString(identifier[index]);
1253                         PySet_Add(ret, item);
1254                         Py_DECREF(item);
1255                 }
1256         }
1257
1258         return ret;
1259 }
1260
1261 static PyObject *pyrna_enum_to_py(PointerRNA *ptr, PropertyRNA *prop, int val)
1262 {
1263         PyObject *item, *ret = NULL;
1264
1265         if (RNA_property_flag(prop) & PROP_ENUM_FLAG) {
1266                 const char *identifier[RNA_ENUM_BITFLAG_SIZE + 1];
1267
1268                 ret = PySet_New(NULL);
1269
1270                 if (RNA_property_enum_bitflag_identifiers(BPy_GetContext(), ptr, prop, val, identifier)) {
1271                         int index;
1272
1273                         for (index = 0; identifier[index]; index++) {
1274                                 item = PyUnicode_FromString(identifier[index]);
1275                                 PySet_Add(ret, item);
1276                                 Py_DECREF(item);
1277                         }
1278
1279                 }
1280         }
1281         else {
1282                 const char *identifier;
1283                 if (RNA_property_enum_identifier(BPy_GetContext(), ptr, prop, val, &identifier)) {
1284                         ret = PyUnicode_FromString(identifier);
1285                 }
1286                 else {
1287                         EnumPropertyItem *enum_item;
1288                         bool free = false;
1289
1290                         /* don't throw error here, can't trust blender 100% to give the
1291                          * right values, python code should not generate error for that */
1292                         RNA_property_enum_items(BPy_GetContext(), ptr, prop, &enum_item, NULL, &free);
1293                         if (enum_item && enum_item->identifier) {
1294                                 ret = PyUnicode_FromString(enum_item->identifier);
1295                         }
1296                         else {
1297                                 const char *ptr_name = RNA_struct_name_get_alloc(ptr, NULL, 0, NULL);
1298
1299                                 /* prefer not fail silently in case of api errors, maybe disable it later */
1300                                 printf("RNA Warning: Current value \"%d\" "
1301                                        "matches no enum in '%s', '%s', '%s'\n",
1302                                        val, RNA_struct_identifier(ptr->type),
1303                                        ptr_name, RNA_property_identifier(prop));
1304
1305 #if 0           /* gives python decoding errors while generating docs :( */
1306                                 char error_str[256];
1307                                 BLI_snprintf(error_str, sizeof(error_str),
1308                                              "RNA Warning: Current value \"%d\" "
1309                                              "matches no enum in '%s', '%s', '%s'",
1310                                              val, RNA_struct_identifier(ptr->type),
1311                                              ptr_name, RNA_property_identifier(prop));
1312
1313                                 PyErr_Warn(PyExc_RuntimeWarning, error_str);
1314 #endif
1315
1316                                 if (ptr_name)
1317                                         MEM_freeN((void *)ptr_name);
1318
1319                                 ret = PyUnicode_FromString("");
1320                         }
1321
1322                         if (free)
1323                                 MEM_freeN(enum_item);
1324 #if 0
1325                         PyErr_Format(PyExc_AttributeError,
1326                                      "RNA Error: Current value \"%d\" matches no enum", val);
1327                         ret = NULL;
1328 #endif
1329                 }
1330         }
1331
1332         return ret;
1333 }
1334
1335 PyObject *pyrna_prop_to_py(PointerRNA *ptr, PropertyRNA *prop)
1336 {
1337         PyObject *ret;
1338         const int type = RNA_property_type(prop);
1339
1340         if (RNA_property_array_check(prop)) {
1341                 return pyrna_py_from_array(ptr, prop);
1342         }
1343
1344         /* see if we can coerce into a python type - PropertyType */
1345         switch (type) {
1346                 case PROP_BOOLEAN:
1347                         ret = PyBool_FromLong(RNA_property_boolean_get(ptr, prop));
1348                         break;
1349                 case PROP_INT:
1350                         ret = PyLong_FromLong(RNA_property_int_get(ptr, prop));
1351                         break;
1352                 case PROP_FLOAT:
1353                         ret = PyFloat_FromDouble(RNA_property_float_get(ptr, prop));
1354                         break;
1355                 case PROP_STRING:
1356                 {
1357                         const int subtype = RNA_property_subtype(prop);
1358                         const char *buf;
1359                         int buf_len;
1360                         char buf_fixed[32];
1361
1362                         buf = RNA_property_string_get_alloc(ptr, prop, buf_fixed, sizeof(buf_fixed), &buf_len);
1363 #ifdef USE_STRING_COERCE
1364                         /* only file paths get special treatment, they may contain non utf-8 chars */
1365                         if (subtype == PROP_BYTESTRING) {
1366                                 ret = PyBytes_FromStringAndSize(buf, buf_len);
1367                         }
1368                         else if (ELEM3(subtype, PROP_FILEPATH, PROP_DIRPATH, PROP_FILENAME)) {
1369                                 ret = PyC_UnicodeFromByteAndSize(buf, buf_len);
1370                         }
1371                         else {
1372                                 ret = PyUnicode_FromStringAndSize(buf, buf_len);
1373                         }
1374 #else  /* USE_STRING_COERCE */
1375                         if (subtype == PROP_BYTESTRING) {
1376                                 ret = PyBytes_FromStringAndSize(buf, buf_len);
1377                         }
1378                         else {
1379                                 ret = PyUnicode_FromStringAndSize(buf, buf_len);
1380                         }
1381 #endif  /* USE_STRING_COERCE */
1382                         if (buf_fixed != buf) {
1383                                 MEM_freeN((void *)buf);
1384                         }
1385                         break;
1386                 }
1387                 case PROP_ENUM:
1388                 {
1389                         ret = pyrna_enum_to_py(ptr, prop, RNA_property_enum_get(ptr, prop));
1390                         break;
1391                 }
1392                 case PROP_POINTER:
1393                 {
1394                         PointerRNA newptr;
1395                         newptr = RNA_property_pointer_get(ptr, prop);
1396                         if (newptr.data) {
1397                                 ret = pyrna_struct_CreatePyObject(&newptr);
1398                         }
1399                         else {
1400                                 ret = Py_None;
1401                                 Py_INCREF(ret);
1402                         }
1403                         break;
1404                 }
1405                 case PROP_COLLECTION:
1406                         ret = pyrna_prop_CreatePyObject(ptr, prop);
1407                         break;
1408                 default:
1409                         PyErr_Format(PyExc_TypeError,
1410                                      "bpy_struct internal error: unknown type '%d' (pyrna_prop_to_py)", type);
1411                         ret = NULL;
1412                         break;
1413         }
1414
1415         return ret;
1416 }
1417
1418 /* This function is used by operators and converting dicts into collections.
1419  * Its takes keyword args and fills them with property values */
1420 int pyrna_pydict_to_props(PointerRNA *ptr, PyObject *kw, int all_args, const char *error_prefix)
1421 {
1422         int error_val = 0;
1423         int totkw;
1424         const char *arg_name = NULL;
1425         PyObject *item;
1426
1427         totkw = kw ? PyDict_Size(kw) : 0;
1428
1429         RNA_STRUCT_BEGIN (ptr, prop)
1430         {
1431                 arg_name = RNA_property_identifier(prop);
1432
1433                 if (STREQ(arg_name, "rna_type")) {
1434                         continue;
1435                 }
1436
1437                 if (kw == NULL) {
1438                         PyErr_Format(PyExc_TypeError,
1439                                      "%.200s: no keywords, expected \"%.200s\"",
1440                                      error_prefix, arg_name ? arg_name : "<UNKNOWN>");
1441                         error_val = -1;
1442                         break;
1443                 }
1444
1445                 item = PyDict_GetItemString(kw, arg_name); /* wont set an error */
1446
1447                 if (item == NULL) {
1448                         if (all_args) {
1449                                 PyErr_Format(PyExc_TypeError,
1450                                              "%.200s: keyword \"%.200s\" missing",
1451                                              error_prefix, arg_name ? arg_name : "<UNKNOWN>");
1452                                 error_val = -1; /* pyrna_py_to_prop sets the error */
1453                                 break;
1454                         }
1455                 }
1456                 else {
1457                         if (pyrna_py_to_prop(ptr, prop, NULL, item, error_prefix)) {
1458                                 error_val = -1;
1459                                 break;
1460                         }
1461                         totkw--;
1462                 }
1463         }
1464         RNA_STRUCT_END;
1465
1466         if (error_val == 0 && totkw > 0) { /* some keywords were given that were not used :/ */
1467                 PyObject *key, *value;
1468                 Py_ssize_t pos = 0;
1469
1470                 while (PyDict_Next(kw, &pos, &key, &value)) {
1471                         arg_name = _PyUnicode_AsString(key);
1472                         if (RNA_struct_find_property(ptr, arg_name) == NULL) break;
1473                         arg_name = NULL;
1474                 }
1475
1476                 PyErr_Format(PyExc_TypeError,
1477                              "%.200s: keyword \"%.200s\" unrecognized",
1478                              error_prefix, arg_name ? arg_name : "<UNKNOWN>");
1479                 error_val = -1;
1480         }
1481
1482         return error_val;
1483 }
1484
1485
1486 static PyObject *pyrna_func_to_py(const PointerRNA *ptr, FunctionRNA *func)
1487 {
1488         BPy_FunctionRNA *pyfunc = (BPy_FunctionRNA *) PyObject_NEW(BPy_FunctionRNA, &pyrna_func_Type);
1489         pyfunc->ptr = *ptr;
1490         pyfunc->func = func;
1491         return (PyObject *)pyfunc;
1492 }
1493
1494
1495 static int pyrna_py_to_prop(PointerRNA *ptr, PropertyRNA *prop, void *data, PyObject *value, const char *error_prefix)
1496 {
1497         /* XXX hard limits should be checked here */
1498         const int type = RNA_property_type(prop);
1499
1500
1501         if (RNA_property_array_check(prop)) {
1502                 /* done getting the length */
1503                 if (pyrna_py_to_array(ptr, prop, data, value, error_prefix) == -1) {
1504                         return -1;
1505                 }
1506         }
1507         else {
1508                 /* Normal Property (not an array) */
1509
1510                 /* see if we can coerce into a python type - PropertyType */
1511                 switch (type) {
1512                         case PROP_BOOLEAN:
1513                         {
1514                                 int param;
1515                                 /* prefer not to have an exception here
1516                                  * however so many poll functions return None or a valid Object.
1517                                  * its a hassle to convert these into a bool before returning, */
1518                                 if (RNA_property_flag(prop) & PROP_OUTPUT) {
1519                                         param = PyObject_IsTrue(value);
1520                                 }
1521                                 else {
1522                                         param = PyLong_AsLong(value);
1523
1524                                         if (UNLIKELY(param & ~1)) {  /* only accept 0/1 */
1525                                                 param = -1;              /* error out below */
1526                                         }
1527                                 }
1528
1529                                 if (param == -1) {
1530                                         PyErr_Format(PyExc_TypeError,
1531                                                      "%.200s %.200s.%.200s expected True/False or 0/1, not %.200s",
1532                                                      error_prefix, RNA_struct_identifier(ptr->type),
1533                                                      RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1534                                         return -1;
1535                                 }
1536                                 else {
1537                                         if (data) *((int *)data) = param;
1538                                         else RNA_property_boolean_set(ptr, prop, param);
1539                                 }
1540                                 break;
1541                         }
1542                         case PROP_INT:
1543                         {
1544                                 int overflow;
1545                                 long param = PyLong_AsLongAndOverflow(value, &overflow);
1546                                 if (overflow || (param > INT_MAX) || (param < INT_MIN)) {
1547                                         PyErr_Format(PyExc_ValueError,
1548                                                      "%.200s %.200s.%.200s value not in 'int' range "
1549                                                      "(" STRINGIFY(INT_MIN) ", " STRINGIFY(INT_MAX) ")",
1550                                                      error_prefix, RNA_struct_identifier(ptr->type),
1551                                                      RNA_property_identifier(prop));
1552                                         return -1;
1553                                 }
1554                                 else if (param == -1 && PyErr_Occurred()) {
1555                                         PyErr_Format(PyExc_TypeError,
1556                                                      "%.200s %.200s.%.200s expected an int type, not %.200s",
1557                                                      error_prefix, RNA_struct_identifier(ptr->type),
1558                                                      RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1559                                         return -1;
1560                                 }
1561                                 else {
1562                                         int param_i = (int)param;
1563                                         if (data) {
1564                                                 RNA_property_int_clamp(ptr, prop, &param_i);
1565                                                 *((int *)data) = param_i;
1566                                         }
1567                                         else {
1568                                                 RNA_property_int_set(ptr, prop, param_i);
1569                                         }
1570                                 }
1571                                 break;
1572                         }
1573                         case PROP_FLOAT:
1574                         {
1575                                 float param = PyFloat_AsDouble(value);
1576                                 if (PyErr_Occurred()) {
1577                                         PyErr_Format(PyExc_TypeError,
1578                                                      "%.200s %.200s.%.200s expected a float type, not %.200s",
1579                                                      error_prefix, RNA_struct_identifier(ptr->type),
1580                                                      RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1581                                         return -1;
1582                                 }
1583                                 else {
1584                                         if (data) {
1585                                                 RNA_property_float_clamp(ptr, prop, (float *)&param);
1586                                                 *((float *)data) = param;
1587                                         }
1588                                         else {
1589                                                 RNA_property_float_set(ptr, prop, param);
1590                                         }
1591                                 }
1592                                 break;
1593                         }
1594                         case PROP_STRING:
1595                         {
1596                                 const int subtype = RNA_property_subtype(prop);
1597                                 const char *param;
1598
1599                                 if (subtype == PROP_BYTESTRING) {
1600
1601                                         /* Byte String */
1602
1603                                         param = PyBytes_AsString(value);
1604
1605                                         if (param == NULL) {
1606                                                 if (PyBytes_Check(value)) {
1607                                                         /* there was an error assigning a string type,
1608                                                          * rather than setting a new error, prefix the existing one
1609                                                          */
1610                                                         PyC_Err_Format_Prefix(PyExc_TypeError,
1611                                                                               "%.200s %.200s.%.200s error assigning bytes",
1612                                                                               error_prefix, RNA_struct_identifier(ptr->type),
1613                                                                               RNA_property_identifier(prop));
1614                                                 }
1615                                                 else {
1616                                                         PyErr_Format(PyExc_TypeError,
1617                                                                      "%.200s %.200s.%.200s expected a bytes type, not %.200s",
1618                                                                      error_prefix, RNA_struct_identifier(ptr->type),
1619                                                                      RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1620                                                 }
1621
1622                                                 return -1;
1623                                         }
1624                                         else {
1625                                                 /* same as unicode */
1626                                                 if (data) *((char **)data) = (char *)param;  /*XXX, this is suspect but needed for function calls, need to see if theres a better way */
1627                                                 else RNA_property_string_set(ptr, prop, param);
1628                                         }
1629                                 }
1630                                 else {
1631                                         /* Unicode String */
1632 #ifdef USE_STRING_COERCE
1633                                         PyObject *value_coerce = NULL;
1634                                         if (ELEM3(subtype, PROP_FILEPATH, PROP_DIRPATH, PROP_FILENAME)) {
1635                                                 /* TODO, get size */
1636                                                 param = PyC_UnicodeAsByte(value, &value_coerce);
1637                                         }
1638                                         else {
1639                                                 param = _PyUnicode_AsString(value);
1640                                         }
1641 #else  /* USE_STRING_COERCE */
1642                                         param = _PyUnicode_AsString(value);
1643 #endif  /* USE_STRING_COERCE */
1644
1645                                         if (param == NULL) {
1646                                                 if (PyUnicode_Check(value)) {
1647                                                         /* there was an error assigning a string type,
1648                                                          * rather than setting a new error, prefix the existing one
1649                                                          */
1650                                                         PyC_Err_Format_Prefix(PyExc_TypeError,
1651                                                                               "%.200s %.200s.%.200s error assigning string",
1652                                                                               error_prefix, RNA_struct_identifier(ptr->type),
1653                                                                               RNA_property_identifier(prop));
1654                                                 }
1655                                                 else {
1656                                                         PyErr_Format(PyExc_TypeError,
1657                                                                      "%.200s %.200s.%.200s expected a string type, not %.200s",
1658                                                                      error_prefix, RNA_struct_identifier(ptr->type),
1659                                                                      RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1660                                                 }
1661
1662                                                 return -1;
1663                                         }
1664                                         else {
1665                                                 /* same as bytes */
1666                                                 if (data) *((char **)data) = (char *)param;  /*XXX, this is suspect but needed for function calls, need to see if theres a better way */
1667                                                 else RNA_property_string_set(ptr, prop, param);
1668                                         }
1669 #ifdef USE_STRING_COERCE
1670                                         Py_XDECREF(value_coerce);
1671 #endif  /* USE_STRING_COERCE */
1672                                 }
1673                                 break;
1674                         }
1675                         case PROP_ENUM:
1676                         {
1677                                 int val = 0;
1678
1679                                 /* type checkins is done by each function */
1680                                 if (RNA_property_flag(prop) & PROP_ENUM_FLAG) {
1681                                         /* set of enum items, concatenate all values with OR */
1682                                         if (pyrna_prop_to_enum_bitfield(ptr, prop, value, &val, error_prefix) == -1) {
1683                                                 return -1;
1684                                         }
1685                                 }
1686                                 else {
1687                                         /* simple enum string */
1688                                         if (pyrna_string_to_enum(value, ptr, prop, &val, error_prefix) == -1) {
1689                                                 return -1;
1690                                         }
1691                                 }
1692
1693                                 if (data) *((int *)data) = val;
1694                                 else RNA_property_enum_set(ptr, prop, val);
1695
1696                                 break;
1697                         }
1698                         case PROP_POINTER:
1699                         {
1700                                 PyObject *value_new = NULL;
1701
1702                                 StructRNA *ptr_type = RNA_property_pointer_type(ptr, prop);
1703                                 int flag = RNA_property_flag(prop);
1704
1705                                 /* this is really nasty!, so we can fake the operator having direct properties eg:
1706                                  * layout.prop(self, "filepath")
1707                                  * ... which in fact should be
1708                                  * layout.prop(self.properties, "filepath")
1709                                  *
1710                                  * we need to do this trick.
1711                                  * if the prop is not an operator type and the pyobject is an operator,
1712                                  * use its properties in place of its self.
1713                                  *
1714                                  * this is so bad that its almost a good reason to do away with fake 'self.properties -> self' class mixing
1715                                  * if this causes problems in the future it should be removed.
1716                                  */
1717                                 if ((ptr_type == &RNA_AnyType) &&
1718                                     (BPy_StructRNA_Check(value)) &&
1719                                     (RNA_struct_is_a(((BPy_StructRNA *)value)->ptr.type, &RNA_Operator)))
1720                                 {
1721                                         value = PyObject_GetAttrString(value, "properties");
1722                                         value_new = value;
1723                                 }
1724
1725
1726                                 /* if property is an OperatorProperties pointer and value is a map,
1727                                  * forward back to pyrna_pydict_to_props */
1728                                 if (RNA_struct_is_a(ptr_type, &RNA_OperatorProperties) && PyDict_Check(value)) {
1729                                         PointerRNA opptr = RNA_property_pointer_get(ptr, prop);
1730                                         return pyrna_pydict_to_props(&opptr, value, 0, error_prefix);
1731                                 }
1732
1733                                 /* another exception, allow to pass a collection as an RNA property */
1734                                 if (Py_TYPE(value) == &pyrna_prop_collection_Type) { /* ok to ignore idprop collections */
1735                                         PointerRNA c_ptr;
1736                                         BPy_PropertyRNA *value_prop = (BPy_PropertyRNA *)value;
1737                                         if (RNA_property_collection_type_get(&value_prop->ptr, value_prop->prop, &c_ptr)) {
1738                                                 value = pyrna_struct_CreatePyObject(&c_ptr);
1739                                                 value_new = value;
1740                                         }
1741                                         else {
1742                                                 PyErr_Format(PyExc_TypeError,
1743                                                              "%.200s %.200s.%.200s collection has no type, "
1744                                                              "cant be used as a %.200s type",
1745                                                              error_prefix, RNA_struct_identifier(ptr->type),
1746                                                              RNA_property_identifier(prop), RNA_struct_identifier(ptr_type));
1747                                                 return -1;
1748                                         }
1749                                 }
1750
1751                                 if (!BPy_StructRNA_Check(value) && value != Py_None) {
1752                                         PyErr_Format(PyExc_TypeError,
1753                                                      "%.200s %.200s.%.200s expected a %.200s type, not %.200s",
1754                                                      error_prefix, RNA_struct_identifier(ptr->type),
1755                                                      RNA_property_identifier(prop), RNA_struct_identifier(ptr_type),
1756                                                      Py_TYPE(value)->tp_name);
1757                                         Py_XDECREF(value_new); return -1;
1758                                 }
1759                                 else if ((flag & PROP_NEVER_NULL) && value == Py_None) {
1760                                         PyErr_Format(PyExc_TypeError,
1761                                                      "%.200s %.200s.%.200s does not support a 'None' assignment %.200s type",
1762                                                      error_prefix, RNA_struct_identifier(ptr->type),
1763                                                      RNA_property_identifier(prop), RNA_struct_identifier(ptr_type));
1764                                         Py_XDECREF(value_new); return -1;
1765                                 }
1766                                 else if ((value != Py_None) &&
1767                                          ((flag & PROP_ID_SELF_CHECK) && ptr->id.data == ((BPy_StructRNA *)value)->ptr.id.data))
1768                                 {
1769                                         PyErr_Format(PyExc_TypeError,
1770                                                      "%.200s %.200s.%.200s ID type does not support assignment to its self",
1771                                                      error_prefix, RNA_struct_identifier(ptr->type),
1772                                                      RNA_property_identifier(prop));
1773                                         Py_XDECREF(value_new); return -1;
1774                                 }
1775                                 else {
1776                                         BPy_StructRNA *param = (BPy_StructRNA *)value;
1777                                         bool raise_error = false;
1778                                         if (data) {
1779
1780                                                 if (flag & PROP_RNAPTR) {
1781                                                         if (flag & PROP_THICK_WRAP) {
1782                                                                 if (value == Py_None)
1783                                                                         memset(data, 0, sizeof(PointerRNA));
1784                                                                 else if (RNA_struct_is_a(param->ptr.type, ptr_type))
1785                                                                         *((PointerRNA *)data) = param->ptr;
1786                                                                 else
1787                                                                         raise_error = true;
1788                                                         }
1789                                                         else {
1790                                                                 /* for function calls, we sometimes want to pass the 'ptr' directly,
1791                                                                  * watch out that it remains valid!, possibly we could support this later if needed */
1792                                                                 BLI_assert(value_new == NULL);
1793                                                                 if (value == Py_None)
1794                                                                         *((void **)data) = NULL;
1795                                                                 else if (RNA_struct_is_a(param->ptr.type, ptr_type))
1796                                                                         *((PointerRNA **)data) = &param->ptr;
1797                                                                 else
1798                                                                         raise_error = true;
1799                                                         }
1800                                                 }
1801                                                 else if (value == Py_None) {
1802                                                         *((void **)data) = NULL;
1803                                                 }
1804                                                 else if (RNA_struct_is_a(param->ptr.type, ptr_type)) {
1805                                                         *((void **)data) = param->ptr.data;
1806                                                 }
1807                                                 else {
1808                                                         raise_error = true;
1809                                                 }
1810                                         }
1811                                         else {
1812                                                 /* data == NULL, assign to RNA */
1813                                                 if (value == Py_None) {
1814                                                         PointerRNA valueptr = {{NULL}};
1815                                                         RNA_property_pointer_set(ptr, prop, valueptr);
1816                                                 }
1817                                                 else if (RNA_struct_is_a(param->ptr.type, ptr_type)) {
1818                                                         RNA_property_pointer_set(ptr, prop, param->ptr);
1819                                                 }
1820                                                 else {
1821                                                         PointerRNA tmp;
1822                                                         RNA_pointer_create(NULL, ptr_type, NULL, &tmp);
1823                                                         PyErr_Format(PyExc_TypeError,
1824                                                                      "%.200s %.200s.%.200s expected a %.200s type. not %.200s",
1825                                                                      error_prefix, RNA_struct_identifier(ptr->type),
1826                                                                      RNA_property_identifier(prop), RNA_struct_identifier(tmp.type),
1827                                                                      RNA_struct_identifier(param->ptr.type));
1828                                                         Py_XDECREF(value_new); return -1;
1829                                                 }
1830                                         }
1831
1832                                         if (raise_error) {
1833                                                 PointerRNA tmp;
1834                                                 RNA_pointer_create(NULL, ptr_type, NULL, &tmp);
1835                                                 PyErr_Format(PyExc_TypeError,
1836                                                              "%.200s %.200s.%.200s expected a %.200s type, not %.200s",
1837                                                              error_prefix, RNA_struct_identifier(ptr->type),
1838                                                              RNA_property_identifier(prop), RNA_struct_identifier(tmp.type),
1839                                                              RNA_struct_identifier(param->ptr.type));
1840                                                 Py_XDECREF(value_new); return -1;
1841                                         }
1842                                 }
1843
1844                                 Py_XDECREF(value_new);
1845
1846                                 break;
1847                         }
1848                         case PROP_COLLECTION:
1849                         {
1850                                 Py_ssize_t seq_len, i;
1851                                 PyObject *item;
1852                                 PointerRNA itemptr;
1853                                 ListBase *lb;
1854                                 CollectionPointerLink *link;
1855
1856                                 lb = (data) ? (ListBase *)data : NULL;
1857
1858                                 /* convert a sequence of dict's into a collection */
1859                                 if (!PySequence_Check(value)) {
1860                                         PyErr_Format(PyExc_TypeError,
1861                                                      "%.200s %.200s.%.200s expected a sequence for an RNA collection, not %.200s",
1862                                                      error_prefix, RNA_struct_identifier(ptr->type),
1863                                                      RNA_property_identifier(prop), Py_TYPE(value)->tp_name);
1864                                         return -1;
1865                                 }
1866
1867                                 seq_len = PySequence_Size(value);
1868                                 for (i = 0; i < seq_len; i++) {
1869                                         item = PySequence_GetItem(value, i);
1870
1871                                         if (item == NULL) {
1872                                                 PyErr_Format(PyExc_TypeError,
1873                                                              "%.200s %.200s.%.200s failed to get sequence index '%d' for an RNA collection",
1874                                                              error_prefix, RNA_struct_identifier(ptr->type),
1875                                                              RNA_property_identifier(prop), i);
1876                                                 Py_XDECREF(item);
1877                                                 return -1;
1878                                         }
1879
1880                                         if (PyDict_Check(item) == 0) {
1881                                                 PyErr_Format(PyExc_TypeError,
1882                                                              "%.200s %.200s.%.200s expected a each sequence "
1883                                                              "member to be a dict for an RNA collection, not %.200s",
1884                                                              error_prefix, RNA_struct_identifier(ptr->type),
1885                                                              RNA_property_identifier(prop), Py_TYPE(item)->tp_name);
1886                                                 Py_XDECREF(item);
1887                                                 return -1;
1888                                         }
1889
1890                                         if (lb) {
1891                                                 link = MEM_callocN(sizeof(CollectionPointerLink), "PyCollectionPointerLink");
1892                                                 link->ptr = itemptr;
1893                                                 BLI_addtail(lb, link);
1894                                         }
1895                                         else
1896                                                 RNA_property_collection_add(ptr, prop, &itemptr);
1897
1898                                         if (pyrna_pydict_to_props(&itemptr, item, 1, "Converting a python list to an RNA collection") == -1) {
1899                                                 PyObject *msg = PyC_ExceptionBuffer();
1900                                                 const char *msg_char = _PyUnicode_AsString(msg);
1901
1902                                                 PyErr_Format(PyExc_TypeError,
1903                                                              "%.200s %.200s.%.200s error converting a member of a collection "
1904                                                              "from a dicts into an RNA collection, failed with: %s",
1905                                                              error_prefix, RNA_struct_identifier(ptr->type),
1906                                                              RNA_property_identifier(prop), msg_char);
1907
1908                                                 Py_DECREF(item);
1909                                                 Py_DECREF(msg);
1910                                                 return -1;
1911                                         }
1912                                         Py_DECREF(item);
1913                                 }
1914
1915                                 break;
1916                         }
1917                         default:
1918                                 PyErr_Format(PyExc_AttributeError,
1919                                              "%.200s %.200s.%.200s unknown property type (pyrna_py_to_prop)",
1920                                              error_prefix, RNA_struct_identifier(ptr->type),
1921                                              RNA_property_identifier(prop));
1922                                 return -1;
1923                 }
1924         }
1925
1926         /* Run rna property functions */
1927         if (RNA_property_update_check(prop)) {
1928                 RNA_property_update(BPy_GetContext(), ptr, prop);
1929         }
1930
1931         return 0;
1932 }
1933
1934 static PyObject *pyrna_prop_array_to_py_index(BPy_PropertyArrayRNA *self, int index)
1935 {
1936         PYRNA_PROP_CHECK_OBJ((BPy_PropertyRNA *)self);
1937         return pyrna_py_from_array_index(self, &self->ptr, self->prop, index);
1938 }
1939
1940 static int pyrna_py_to_prop_array_index(BPy_PropertyArrayRNA *self, int index, PyObject *value)
1941 {
1942         int ret = 0;
1943         PointerRNA *ptr = &self->ptr;
1944         PropertyRNA *prop = self->prop;
1945
1946         const int totdim = RNA_property_array_dimension(ptr, prop, NULL);
1947
1948         if (totdim > 1) {
1949                 /* char error_str[512]; */
1950                 if (pyrna_py_to_array_index(&self->ptr, self->prop, self->arraydim, self->arrayoffset, index, value, "") == -1) {
1951                         /* error is set */
1952                         ret = -1;
1953                 }
1954         }
1955         else {
1956                 /* see if we can coerce into a python type - PropertyType */
1957                 switch (RNA_property_type(prop)) {
1958                         case PROP_BOOLEAN:
1959                         {
1960                                 int param = PyLong_AsLong(value);
1961
1962                                 if (param < 0 || param > 1) {
1963                                         PyErr_SetString(PyExc_TypeError, "expected True/False or 0/1");
1964                                         ret = -1;
1965                                 }
1966                                 else {
1967                                         RNA_property_boolean_set_index(ptr, prop, index, param);
1968                                 }
1969                                 break;
1970                         }
1971                         case PROP_INT:
1972                         {
1973                                 int param = PyLong_AsLong(value);
1974                                 if (param == -1 && PyErr_Occurred()) {
1975                                         PyErr_SetString(PyExc_TypeError, "expected an int type");
1976                                         ret = -1;
1977                                 }
1978                                 else {
1979                                         RNA_property_int_clamp(ptr, prop, &param);
1980                                         RNA_property_int_set_index(ptr, prop, index, param);
1981                                 }
1982                                 break;
1983                         }
1984                         case PROP_FLOAT:
1985                         {
1986                                 float param = PyFloat_AsDouble(value);
1987                                 if (PyErr_Occurred()) {
1988                                         PyErr_SetString(PyExc_TypeError, "expected a float type");
1989                                         ret = -1;
1990                                 }
1991                                 else {
1992                                         RNA_property_float_clamp(ptr, prop, &param);
1993                                         RNA_property_float_set_index(ptr, prop, index, param);
1994                                 }
1995                                 break;
1996                         }
1997                         default:
1998                                 PyErr_SetString(PyExc_AttributeError, "not an array type");
1999                                 ret = -1;
2000                                 break;
2001                 }
2002         }
2003
2004         /* Run rna property functions */
2005         if (RNA_property_update_check(prop)) {
2006                 RNA_property_update(BPy_GetContext(), ptr, prop);
2007         }
2008
2009         return ret;
2010 }
2011
2012 /* ---------------sequence------------------------------------------- */
2013 static Py_ssize_t pyrna_prop_array_length(BPy_PropertyArrayRNA *self)
2014 {
2015         PYRNA_PROP_CHECK_INT((BPy_PropertyRNA *)self);
2016
2017         if (RNA_property_array_dimension(&self->ptr, self->prop, NULL) > 1)
2018                 return RNA_property_multi_array_length(&self->ptr, self->prop, self->arraydim);
2019         else
2020                 return RNA_property_array_length(&self->ptr, self->prop);
2021 }
2022
2023 static Py_ssize_t pyrna_prop_collection_length(BPy_PropertyRNA *self)
2024 {
2025         PYRNA_PROP_CHECK_INT(self);
2026
2027         return RNA_property_collection_length(&self->ptr, self->prop);
2028 }
2029
2030 /* bool functions are for speed, so we can avoid getting the length
2031  * of 1000's of items in a linked list for eg. */
2032 static int pyrna_prop_array_bool(BPy_PropertyRNA *self)
2033 {
2034         PYRNA_PROP_CHECK_INT(self);
2035
2036         return RNA_property_array_length(&self->ptr, self->prop) ? 1 : 0;
2037 }
2038
2039 static int pyrna_prop_collection_bool(BPy_PropertyRNA *self)
2040 {
2041         /* no callback defined, just iterate and find the nth item */
2042         CollectionPropertyIterator iter;
2043         int test;
2044
2045         PYRNA_PROP_CHECK_INT(self);
2046
2047         RNA_property_collection_begin(&self->ptr, self->prop, &iter);
2048         test = iter.valid;
2049         RNA_property_collection_end(&iter);
2050         return test;
2051 }
2052
2053
2054 /* notice getting the length of the collection is avoided unless negative
2055  * index is used or to detect internal error with a valid index.
2056  * This is done for faster lookups. */
2057 #define PYRNA_PROP_COLLECTION_ABS_INDEX(ret_err)                              \
2058         if (keynum < 0) {                                                         \
2059             keynum_abs += RNA_property_collection_length(&self->ptr, self->prop); \
2060             if (keynum_abs < 0) {                                                 \
2061                 PyErr_Format(PyExc_IndexError,                                    \
2062                              "bpy_prop_collection[%d]: out of range.", keynum);   \
2063                 return ret_err;                                                   \
2064             }                                                                     \
2065         } (void)0
2066
2067
2068 /* internal use only */
2069 static PyObject *pyrna_prop_collection_subscript_int(BPy_PropertyRNA *self, Py_ssize_t keynum)
2070 {
2071         PointerRNA newptr;
2072         Py_ssize_t keynum_abs = keynum;
2073
2074         PYRNA_PROP_CHECK_OBJ(self);
2075
2076         PYRNA_PROP_COLLECTION_ABS_INDEX(NULL);
2077
2078         if (RNA_property_collection_lookup_int(&self->ptr, self->prop, keynum_abs, &newptr)) {
2079                 return pyrna_struct_CreatePyObject(&newptr);
2080         }
2081         else {
2082                 const int len = RNA_property_collection_length(&self->ptr, self->prop);
2083                 if (keynum_abs >= len) {
2084                         PyErr_Format(PyExc_IndexError,
2085                                      "bpy_prop_collection[index]: "
2086                                      "index %d out of range, size %d", keynum, len);
2087                 }
2088                 else {
2089                         PyErr_Format(PyExc_RuntimeError,
2090                                      "bpy_prop_collection[index]: internal error, "
2091                                      "valid index %d given in %d sized collection but value not found",
2092                                      keynum_abs, len);
2093                 }
2094
2095                 return NULL;
2096         }
2097 }
2098
2099 /* values type must have been already checked */
2100 static int pyrna_prop_collection_ass_subscript_int(BPy_PropertyRNA *self, Py_ssize_t keynum, PyObject *value)
2101 {
2102         Py_ssize_t keynum_abs = keynum;
2103         const PointerRNA *ptr = (value == Py_None) ? (&PointerRNA_NULL) : &((BPy_StructRNA *)value)->ptr;
2104
2105         PYRNA_PROP_CHECK_INT(self);
2106
2107         PYRNA_PROP_COLLECTION_ABS_INDEX(-1);
2108
2109         if (RNA_property_collection_assign_int(&self->ptr, self->prop, keynum_abs, ptr) == 0) {
2110                 const int len = RNA_property_collection_length(&self->ptr, self->prop);
2111                 if (keynum_abs >= len) {
2112                         PyErr_Format(PyExc_IndexError,
2113                                      "bpy_prop_collection[index] = value: "
2114                                      "index %d out of range, size %d", keynum, len);
2115                 }
2116                 else {
2117
2118                         PyErr_Format(PyExc_IndexError,
2119                                      "bpy_prop_collection[index] = value: "
2120                                      "failed assignment (unknown reason)", keynum);
2121                 }
2122                 return -1;
2123         }
2124
2125         return 0;
2126 }
2127
2128 static PyObject *pyrna_prop_array_subscript_int(BPy_PropertyArrayRNA *self, int keynum)
2129 {
2130         int len;
2131
2132         PYRNA_PROP_CHECK_OBJ((BPy_PropertyRNA *)self);
2133
2134         len = pyrna_prop_array_length(self);
2135
2136         if (keynum < 0) keynum += len;
2137
2138         if (keynum >= 0 && keynum < len)
2139                 return pyrna_prop_array_to_py_index(self, keynum);
2140
2141         PyErr_Format(PyExc_IndexError,
2142                      "bpy_prop_array[index]: index %d out of range", keynum);
2143         return NULL;
2144 }
2145
2146 static PyObject *pyrna_prop_collection_subscript_str(BPy_PropertyRNA *self, const char *keyname)
2147 {
2148         PointerRNA newptr;
2149
2150         PYRNA_PROP_CHECK_OBJ(self);
2151
2152         if (RNA_property_collection_lookup_string(&self->ptr, self->prop, keyname, &newptr))
2153                 return pyrna_struct_CreatePyObject(&newptr);
2154
2155         PyErr_Format(PyExc_KeyError, "bpy_prop_collection[key]: key \"%.200s\" not found", keyname);
2156         return NULL;
2157 }
2158 /* static PyObject *pyrna_prop_array_subscript_str(BPy_PropertyRNA *self, char *keyname) */
2159
2160 /* special case: bpy.data.objects["some_id_name", "//some_lib_name.blend"]
2161  * also for:     bpy.data.objects.get(("some_id_name", "//some_lib_name.blend"), fallback)
2162  *
2163  * note:
2164  * error codes since this is not to be called directly from python,
2165  * this matches pythons __contains__ values capi.
2166  * -1: exception set
2167  *  0: not found
2168  *  1: found */
2169 static int pyrna_prop_collection_subscript_str_lib_pair_ptr(BPy_PropertyRNA *self, PyObject *key,
2170                                                             const char *err_prefix, const short err_not_found,
2171                                                             PointerRNA *r_ptr
2172                                                             )
2173 {
2174         const char *keyname;
2175
2176         /* first validate the args, all we know is that they are a tuple */
2177         if (PyTuple_GET_SIZE(key) != 2) {
2178                 PyErr_Format(PyExc_KeyError,
2179                              "%s: tuple key must be a pair, not size %d",
2180                              err_prefix, PyTuple_GET_SIZE(key));
2181                 return -1;
2182         }
2183         else if (self->ptr.type != &RNA_BlendData) {
2184                 PyErr_Format(PyExc_KeyError,
2185                              "%s: is only valid for bpy.data collections, not %.200s",
2186                              err_prefix, RNA_struct_identifier(self->ptr.type));
2187                 return -1;
2188         }
2189         else if ((keyname = _PyUnicode_AsString(PyTuple_GET_ITEM(key, 0))) == NULL) {
2190                 PyErr_Format(PyExc_KeyError,
2191                              "%s: id must be a string, not %.200s",
2192                              err_prefix, Py_TYPE(PyTuple_GET_ITEM(key, 0))->tp_name);
2193                 return -1;
2194         }
2195         else {
2196                 PyObject *keylib = PyTuple_GET_ITEM(key, 1);
2197                 Library *lib;
2198                 bool found = false;
2199
2200                 if (keylib == Py_None) {
2201                         lib = NULL;
2202                 }
2203                 else if (PyUnicode_Check(keylib)) {
2204                         Main *bmain = self->ptr.data;
2205                         const char *keylib_str = _PyUnicode_AsString(keylib);
2206                         lib = BLI_findstring(&bmain->library, keylib_str, offsetof(Library, name));
2207                         if (lib == NULL) {
2208                                 if (err_not_found) {
2209                                         PyErr_Format(PyExc_KeyError,
2210                                                      "%s: lib name '%.240s' "
2211                                                      "does not reference a valid library",
2212                                                      err_prefix, keylib_str);
2213                                         return -1;
2214                                 }
2215                                 else {
2216                                         return 0;
2217                                 }
2218
2219                         }
2220                 }
2221                 else {
2222                         PyErr_Format(PyExc_KeyError,
2223                                      "%s: lib must be a sting or None, not %.200s",
2224                                      err_prefix, Py_TYPE(keylib)->tp_name);
2225                         return -1;
2226                 }
2227
2228                 /* lib is either a valid pointer or NULL,
2229                  * either way can do direct comparison with id.lib */
2230
2231                 RNA_PROP_BEGIN (&self->ptr, itemptr, self->prop)
2232                 {
2233                         ID *id = itemptr.data; /* always an ID */
2234                         if (id->lib == lib && (STREQLEN(keyname, id->name + 2, sizeof(id->name) - 2))) {
2235                                 found = true;
2236                                 if (r_ptr) {
2237                                         *r_ptr = itemptr;
2238                                 }
2239                                 break;
2240                         }
2241                 }
2242                 RNA_PROP_END;
2243
2244                 /* we may want to fail silently as with collection.get() */
2245                 if ((found == false) && err_not_found) {
2246                         /* only runs for getitem access so use fixed string */
2247                         PyErr_SetString(PyExc_KeyError,
2248                                         "bpy_prop_collection[key, lib]: not found");
2249                         return -1;
2250                 }
2251                 else {
2252                         return found; /* 1 / 0, no exception */
2253                 }
2254         }
2255 }
2256
2257 static PyObject *pyrna_prop_collection_subscript_str_lib_pair(BPy_PropertyRNA *self, PyObject *key,
2258                                                               const char *err_prefix, const bool err_not_found)
2259 {
2260         PointerRNA ptr;
2261         const int contains = pyrna_prop_collection_subscript_str_lib_pair_ptr(self, key, err_prefix, err_not_found, &ptr);
2262
2263         if (contains == 1) {
2264                 return pyrna_struct_CreatePyObject(&ptr);
2265         }
2266         else {
2267                 return NULL;
2268         }
2269 }
2270
2271
2272 static PyObject *pyrna_prop_collection_subscript_slice(BPy_PropertyRNA *self, Py_ssize_t start, Py_ssize_t stop)
2273 {
2274         CollectionPropertyIterator rna_macro_iter;
2275         int count;
2276
2277         PyObject *list;
2278         PyObject *item;
2279
2280         PYRNA_PROP_CHECK_OBJ(self);
2281
2282         list = PyList_New(0);
2283
2284         /* skip to start */
2285         RNA_property_collection_begin(&self->ptr, self->prop, &rna_macro_iter);
2286         RNA_property_collection_skip(&rna_macro_iter, start);
2287
2288         /* add items until stop */
2289         for (count = start; rna_macro_iter.valid;
2290              RNA_property_collection_next(&rna_macro_iter))
2291         {
2292                 item = pyrna_struct_CreatePyObject(&rna_macro_iter.ptr);
2293                 PyList_Append(list, item);
2294                 Py_DECREF(item);
2295
2296                 count++;
2297                 if (count == stop) {
2298                         break;
2299                 }
2300         }
2301
2302         RNA_property_collection_end(&rna_macro_iter);
2303
2304         return list;
2305 }
2306
2307 /* TODO - dimensions
2308  * note: could also use pyrna_prop_array_to_py_index(self, count) in a loop but its a lot slower
2309  * since at the moment it reads (and even allocates) the entire array for each index.
2310  */
2311 static PyObject *pyrna_prop_array_subscript_slice(BPy_PropertyArrayRNA *self, PointerRNA *ptr, PropertyRNA *prop,
2312                                                   Py_ssize_t start, Py_ssize_t stop, Py_ssize_t length)
2313 {
2314         int count, totdim;
2315         PyObject *tuple;
2316
2317         PYRNA_PROP_CHECK_OBJ((BPy_PropertyRNA *)self);
2318
2319         tuple = PyTuple_New(stop - start);
2320
2321         /* PYRNA_PROP_CHECK_OBJ(self); isn't needed, internal use only */
2322
2323         totdim = RNA_property_array_dimension(ptr, prop, NULL);
2324
2325         if (totdim > 1) {
2326                 for (count = start; count < stop; count++)
2327                         PyTuple_SET_ITEM(tuple, count - start, pyrna_prop_array_to_py_index(self, count));
2328         }
2329         else {
2330                 switch (RNA_property_type(prop)) {
2331                         case PROP_FLOAT:
2332                         {
2333                                 float values_stack[PYRNA_STACK_ARRAY];
2334                                 float *values;
2335                                 if (length > PYRNA_STACK_ARRAY) { values = PyMem_MALLOC(sizeof(float) * length); }
2336                                 else                            { values = values_stack; }
2337                                 RNA_property_float_get_array(ptr, prop, values);
2338
2339                                 for (count = start; count < stop; count++)
2340                                         PyTuple_SET_ITEM(tuple, count - start, PyFloat_FromDouble(values[count]));
2341
2342                                 if (values != values_stack) {
2343                                         PyMem_FREE(values);
2344                                 }
2345                                 break;
2346                         }
2347                         case PROP_BOOLEAN:
2348                         {
2349                                 int values_stack[PYRNA_STACK_ARRAY];
2350                                 int *values;
2351                                 if (length > PYRNA_STACK_ARRAY) { values = PyMem_MALLOC(sizeof(int) * length); }
2352                                 else                            { values = values_stack; }
2353
2354                                 RNA_property_boolean_get_array(ptr, prop, values);
2355                                 for (count = start; count < stop; count++)
2356                                         PyTuple_SET_ITEM(tuple, count - start, PyBool_FromLong(values[count]));
2357
2358                                 if (values != values_stack) {
2359                                         PyMem_FREE(values);
2360                                 }
2361                                 break;
2362                         }
2363                         case PROP_INT:
2364                         {
2365                                 int values_stack[PYRNA_STACK_ARRAY];
2366                                 int *values;
2367                                 if (length > PYRNA_STACK_ARRAY) { values = PyMem_MALLOC(sizeof(int) * length); }
2368                                 else                            { values = values_stack; }
2369
2370                                 RNA_property_int_get_array(ptr, prop, values);
2371                                 for (count = start; count < stop; count++)
2372                                         PyTuple_SET_ITEM(tuple, count - start, PyLong_FromLong(values[count]));
2373
2374                                 if (values != values_stack) {
2375                                         PyMem_FREE(values);
2376                                 }
2377                                 break;
2378                         }
2379                         default:
2380                                 BLI_assert(!"Invalid array type");
2381
2382                                 PyErr_SetString(PyExc_TypeError, "not an array type");
2383                                 Py_DECREF(tuple);
2384                                 tuple = NULL;
2385                                 break;
2386                 }
2387         }
2388         return tuple;
2389 }
2390
2391 static PyObject *pyrna_prop_collection_subscript(BPy_PropertyRNA *self, PyObject *key)
2392 {
2393         PYRNA_PROP_CHECK_OBJ(self);
2394
2395         if (PyUnicode_Check(key)) {
2396                 return pyrna_prop_collection_subscript_str(self, _PyUnicode_AsString(key));
2397         }
2398         else if (PyIndex_Check(key)) {
2399                 Py_ssize_t i = PyNumber_AsSsize_t(key, PyExc_IndexError);
2400                 if (i == -1 && PyErr_Occurred())
2401                         return NULL;
2402
2403                 return pyrna_prop_collection_subscript_int(self, i);
2404         }
2405         else if (PySlice_Check(key)) {
2406                 PySliceObject *key_slice = (PySliceObject *)key;
2407                 Py_ssize_t step = 1;
2408
2409                 if (key_slice->step != Py_None && !_PyEval_SliceIndex(key, &step)) {
2410                         return NULL;
2411                 }
2412                 else if (step != 1) {
2413                         PyErr_SetString(PyExc_TypeError, "bpy_prop_collection[slice]: slice steps not supported");
2414                         return NULL;
2415                 }
2416                 else if (key_slice->start == Py_None && key_slice->stop == Py_None) {
2417                         return pyrna_prop_collection_subscript_slice(self, 0, PY_SSIZE_T_MAX);
2418                 }
2419                 else {
2420                         Py_ssize_t start = 0, stop = PY_SSIZE_T_MAX;
2421
2422                         /* avoid PySlice_GetIndicesEx because it needs to know the length ahead of time. */
2423                         if (key_slice->start != Py_None && !_PyEval_SliceIndex(key_slice->start, &start)) return NULL;
2424                         if (key_slice->stop  != Py_None && !_PyEval_SliceIndex(key_slice->stop,  &stop))  return NULL;
2425
2426                         if (start < 0 || stop < 0) {
2427                                 /* only get the length for negative values */
2428                                 Py_ssize_t len = (Py_ssize_t)RNA_property_collection_length(&self->ptr, self->prop);
2429                                 if (start < 0) start += len;
2430                                 if (stop  < 0) stop  += len;
2431                         }
2432
2433                         if (stop - start <= 0) {
2434                                 return PyList_New(0);
2435                         }
2436                         else {
2437                                 return pyrna_prop_collection_subscript_slice(self, start, stop);
2438                         }
2439                 }
2440         }
2441         else if (PyTuple_Check(key)) {
2442                 /* special case, for ID datablocks we */
2443                 return pyrna_prop_collection_subscript_str_lib_pair(self, key,
2444                                                                     "bpy_prop_collection[id, lib]", true);
2445         }
2446         else {
2447                 PyErr_Format(PyExc_TypeError,
2448                              "bpy_prop_collection[key]: invalid key, "
2449                              "must be a string or an int, not %.200s",
2450                              Py_TYPE(key)->tp_name);
2451                 return NULL;
2452         }
2453 }
2454
2455 /* generic check to see if a PyObject is compatible with a collection
2456  * -1 on failure, 0 on success, sets the error */
2457 static int pyrna_prop_collection_type_check(BPy_PropertyRNA *self, PyObject *value)
2458 {
2459         StructRNA *prop_srna;
2460
2461         if (value == Py_None) {
2462                 if (RNA_property_flag(self->prop) & PROP_NEVER_NULL) {
2463                         PyErr_Format(PyExc_TypeError,
2464                                      "bpy_prop_collection[key] = value: invalid, "
2465                                      "this collection doesn't support None assignment");
2466                         return -1;
2467                 }
2468                 else {
2469                         return 0; /* None is OK */
2470                 }
2471         }
2472         else if (BPy_StructRNA_Check(value) == 0) {
2473                 PyErr_Format(PyExc_TypeError,
2474                              "bpy_prop_collection[key] = value: invalid, "
2475                              "expected a StructRNA type or None, not a %.200s",
2476                              Py_TYPE(value)->tp_name);
2477                 return -1;
2478         }
2479         else if ((prop_srna = RNA_property_pointer_type(&self->ptr, self->prop))) {
2480                 StructRNA *value_srna = ((BPy_StructRNA *)value)->ptr.type;
2481                 if (RNA_struct_is_a(value_srna, prop_srna) == 0) {
2482                         PyErr_Format(PyExc_TypeError,
2483                                      "bpy_prop_collection[key] = value: invalid, "
2484                                      "expected a '%.200s' type or None, not a '%.200s'",
2485                                      RNA_struct_identifier(prop_srna),
2486                                      RNA_struct_identifier(value_srna)
2487                                      );
2488                         return -1;
2489                 }
2490                 else {
2491                         return 0; /* OK, this is the correct type!*/
2492                 }
2493         }
2494
2495         PyErr_Format(PyExc_TypeError,
2496                      "bpy_prop_collection[key] = value: internal error, "
2497                      "failed to get the collection type");
2498         return -1;
2499 }
2500
2501 /* note: currently this is a copy of 'pyrna_prop_collection_subscript' with
2502  * large blocks commented, we may support slice/key indices later */
2503 static int pyrna_prop_collection_ass_subscript(BPy_PropertyRNA *self, PyObject *key, PyObject *value)
2504 {
2505         PYRNA_PROP_CHECK_INT(self);
2506
2507         /* validate the assigned value */
2508         if (value == NULL) {
2509                 PyErr_SetString(PyExc_TypeError,
2510                                 "del bpy_prop_collection[key]: not supported");
2511                 return -1;
2512         }
2513         else if (pyrna_prop_collection_type_check(self, value) == -1) {
2514                 return -1; /* exception is set */
2515         }
2516
2517 #if 0
2518         if (PyUnicode_Check(key)) {
2519                 return pyrna_prop_collection_subscript_str(self, _PyUnicode_AsString(key));
2520         }
2521         else
2522 #endif
2523         if (PyIndex_Check(key)) {
2524                 Py_ssize_t i = PyNumber_AsSsize_t(key, PyExc_IndexError);
2525                 if (i == -1 && PyErr_Occurred())
2526                         return -1;
2527
2528                 return pyrna_prop_collection_ass_subscript_int(self, i, value);
2529         }
2530 #if 0 /* TODO, fake slice assignment */
2531         else if (PySlice_Check(key)) {
2532                 PySliceObject *key_slice = (PySliceObject *)key;
2533                 Py_ssize_t step = 1;
2534
2535                 if (key_slice->step != Py_None && !_PyEval_SliceIndex(key, &step)) {
2536                         return NULL;
2537                 }
2538                 else if (step != 1) {
2539                         PyErr_SetString(PyExc_TypeError, "bpy_prop_collection[slice]: slice steps not supported");
2540                         return NULL;
2541                 }
2542                 else if (key_slice->start == Py_None && key_slice->stop == Py_None) {
2543                         return pyrna_prop_collection_subscript_slice(self, 0, PY_SSIZE_T_MAX);
2544                 }
2545                 else {
2546                         Py_ssize_t start = 0, stop = PY_SSIZE_T_MAX;
2547
2548                         /* avoid PySlice_GetIndicesEx because it needs to know the length ahead of time. */
2549                         if (key_slice->start != Py_None && !_PyEval_SliceIndex(key_slice->start, &start)) return NULL;
2550                         if (key_slice->stop != Py_None && !_PyEval_SliceIndex(key_slice->stop, &stop))    return NULL;
2551
2552                         if (start < 0 || stop < 0) {
2553                                 /* only get the length for negative values */
2554                                 Py_ssize_t len = (Py_ssize_t)RNA_property_collection_length(&self->ptr, self->prop);
2555                                 if (start < 0) start += len;
2556                                 if (stop  < 0) stop  += len;
2557                         }
2558
2559                         if (stop - start <= 0) {
2560                                 return PyList_New(0);
2561                         }
2562                         else {
2563                                 return pyrna_prop_collection_subscript_slice(self, start, stop);
2564                         }
2565                 }
2566         }
2567 #endif
2568         else {
2569                 PyErr_Format(PyExc_TypeError,
2570                              "bpy_prop_collection[key]: invalid key, "
2571                              "must be a string or an int, not %.200s",
2572                              Py_TYPE(key)->tp_name);
2573                 return -1;
2574         }
2575 }
2576
2577 static PyObject *pyrna_prop_array_subscript(BPy_PropertyArrayRNA *self, PyObject *key)
2578 {
2579         PYRNA_PROP_CHECK_OBJ((BPy_PropertyRNA *)self);
2580
2581 #if 0
2582         if (PyUnicode_Check(key)) {
2583                 return pyrna_prop_array_subscript_str(self, _PyUnicode_AsString(key));
2584         }
2585         else
2586 #endif
2587         if (PyIndex_Check(key)) {
2588                 Py_ssize_t i = PyNumber_AsSsize_t(key, PyExc_IndexError);
2589                 if (i == -1 && PyErr_Occurred())
2590                         return NULL;
2591                 return pyrna_prop_array_subscript_int(self, PyLong_AsLong(key));
2592         }
2593         else if (PySlice_Check(key)) {
2594                 Py_ssize_t step = 1;
2595                 PySliceObject *key_slice = (PySliceObject *)key;
2596
2597                 if (key_slice->step != Py_None && !_PyEval_SliceIndex(key, &step)) {
2598                         return NULL;
2599                 }
2600                 else if (step != 1) {
2601                         PyErr_SetString(PyExc_TypeError, "bpy_prop_array[slice]: slice steps not supported");
2602                         return NULL;
2603                 }
2604                 else if (key_slice->start == Py_None && key_slice->stop == Py_None) {
2605                         /* note, no significant advantage with optimizing [:] slice as with collections
2606                          * but include here for consistency with collection slice func */
2607                         Py_ssize_t len = (Py_ssize_t)pyrna_prop_array_length(self);
2608                         return pyrna_prop_array_subscript_slice(self, &self->ptr, self->prop, 0, len, len);
2609                 }
2610                 else {
2611                         int len = pyrna_prop_array_length(self);
2612                         Py_ssize_t start, stop, slicelength;
2613
2614                         if (PySlice_GetIndicesEx(key, len, &start, &stop, &step, &slicelength) < 0)
2615                                 return NULL;
2616
2617                         if (slicelength <= 0) {
2618                                 return PyTuple_New(0);
2619                         }
2620                         else {
2621                                 return pyrna_prop_array_subscript_slice(self, &self->ptr, self->prop, start, stop, len);
2622                         }
2623                 }
2624         }
2625         else {
2626                 PyErr_SetString(PyExc_AttributeError, "bpy_prop_array[key]: invalid key, key must be an int");
2627                 return NULL;
2628         }
2629 }
2630
2631 /* could call (pyrna_py_to_prop_array_index(self, i, value) in a loop but it is slow */
2632 static int prop_subscript_ass_array_slice(PointerRNA *ptr, PropertyRNA *prop,
2633                                           int start, int stop, int length, PyObject *value_orig)
2634 {
2635         PyObject *value;
2636         int count;
2637         void *values_alloc = NULL;
2638         int ret = 0;
2639
2640         if (value_orig == NULL) {
2641                 PyErr_SetString(PyExc_TypeError,
2642                                 "bpy_prop_array[slice] = value: deleting with list types is not supported by bpy_struct");
2643                 return -1;
2644         }
2645
2646         if (!(value = PySequence_Fast(value_orig, "bpy_prop_array[slice] = value: assignment is not a sequence type"))) {
2647                 return -1;
2648         }
2649
2650         if (PySequence_Fast_GET_SIZE(value) != stop - start) {
2651                 Py_DECREF(value);
2652                 PyErr_SetString(PyExc_TypeError,
2653                                 "bpy_prop_array[slice] = value: re-sizing bpy_struct arrays isn't supported");
2654                 return -1;
2655         }
2656
2657         switch (RNA_property_type(prop)) {
2658                 case PROP_FLOAT:
2659                 {
2660                         float values_stack[PYRNA_STACK_ARRAY];
2661                         float *values, fval;
2662
2663                         float min, max;
2664                         RNA_property_float_range(ptr, prop, &min, &max);
2665
2666                         if (length > PYRNA_STACK_ARRAY) { values = values_alloc = PyMem_MALLOC(sizeof(float) * length); }
2667                         else                            { values = values_stack; }
2668                         if (start != 0 || stop != length) /* partial assignment? - need to get the array */
2669                                 RNA_property_float_get_array(ptr, prop, values);
2670
2671                         for (count = start; count < stop; count++) {
2672                                 fval = PyFloat_AsDouble(PySequence_Fast_GET_ITEM(value, count - start));
2673                                 CLAMP(fval, min, max);
2674                                 values[count] = fval;
2675                         }
2676
2677                         if (PyErr_Occurred()) ret = -1;
2678                         else                  RNA_property_float_set_array(ptr, prop, values);
2679                         break;
2680                 }
2681                 case PROP_BOOLEAN:
2682                 {
2683                         int values_stack[PYRNA_STACK_ARRAY];
2684                         int *values;
2685                         if (length > PYRNA_STACK_ARRAY) { values = values_alloc = PyMem_MALLOC(sizeof(int) * length); }
2686                         else                            { values = values_stack; }
2687
2688                         if (start != 0 || stop != length) /* partial assignment? - need to get the array */
2689                                 RNA_property_boolean_get_array(ptr, prop, values);
2690
2691                         for (count = start; count < stop; count++)
2692                                 values[count] = PyLong_AsLong(PySequence_Fast_GET_ITEM(value, count - start));
2693
2694                         if (PyErr_Occurred()) ret = -1;
2695                         else                  RNA_property_boolean_set_array(ptr, prop, values);
2696                         break;
2697                 }
2698                 case PROP_INT:
2699                 {
2700                         int values_stack[PYRNA_STACK_ARRAY];
2701                         int *values, ival;
2702
2703                         int min, max;
2704                         RNA_property_int_range(ptr, prop, &min, &max);
2705
2706                         if (length > PYRNA_STACK_ARRAY) { values = values_alloc = PyMem_MALLOC(sizeof(int) * length); }
2707                         else                            { values = values_stack; }
2708
2709                         if (start != 0 || stop != length) /* partial assignment? - need to get the array */
2710                                 RNA_property_int_get_array(ptr, prop, values);
2711
2712                         for (count = start; count < stop; count++) {
2713                                 ival = PyLong_AsLong(PySequence_Fast_GET_ITEM(value, count - start));
2714                                 CLAMP(ival, min, max);
2715                                 values[count] = ival;
2716                         }
2717
2718                         if (PyErr_Occurred()) ret = -1;
2719                         else                  RNA_property_int_set_array(ptr, prop, values);
2720                         break;
2721                 }
2722                 default:
2723                         PyErr_SetString(PyExc_TypeError, "not an array type");
2724                         ret = -1;
2725                         break;
2726         }
2727
2728         Py_DECREF(value);
2729
2730         if (values_alloc) {
2731                 PyMem_FREE(values_alloc);
2732         }
2733
2734         return ret;
2735
2736 }
2737
2738 static int prop_subscript_ass_array_int(BPy_PropertyArrayRNA *self, Py_ssize_t keynum, PyObject *value)
2739 {
2740         int len;
2741
2742         PYRNA_PROP_CHECK_INT((BPy_PropertyRNA *)self);
2743
2744         len = pyrna_prop_array_length(self);
2745
2746         if (keynum < 0) keynum += len;
2747
2748         if (keynum >= 0 && keynum < len)
2749                 return pyrna_py_to_prop_array_index(self, keynum, value);
2750
2751         PyErr_SetString(PyExc_IndexError,
2752                         "bpy_prop_array[index] = value: index out of range");
2753         return -1;
2754 }
2755
2756 static int pyrna_prop_array_ass_subscript(BPy_PropertyArrayRNA *self, PyObject *key, PyObject *value)
2757 {
2758         /* char *keyname = NULL; */ /* not supported yet */
2759         int ret = -1;
2760
2761         PYRNA_PROP_CHECK_INT((BPy_PropertyRNA *)self);
2762
2763         if (!RNA_property_editable_flag(&self->ptr, self->prop)) {
2764                 PyErr_Format(PyExc_AttributeError,
2765                              "bpy_prop_collection: attribute \"%.200s\" from \"%.200s\" is read-only",
2766                              RNA_property_identifier(self->prop), RNA_struct_identifier(self->ptr.type));
2767                 ret = -1;
2768         }
2769
2770         else if (PyIndex_Check(key)) {
2771                 Py_ssize_t i = PyNumber_AsSsize_t(key, PyExc_IndexError);
2772                 if (i == -1 && PyErr_Occurred()) {
2773                         ret = -1;
2774                 }
2775                 else {
2776                         ret = prop_subscript_ass_array_int(self, i, value);
2777                 }
2778         }
2779         else if (PySlice_Check(key)) {
2780                 int len = RNA_property_array_length(&self->ptr, self->prop);
2781                 Py_ssize_t start, stop, step, slicelength;
2782
2783                 if (PySlice_GetIndicesEx(key, len, &start, &stop, &step, &slicelength) < 0) {
2784                         ret = -1;
2785                 }
2786                 else if (slicelength <= 0) {
2787                         ret = 0; /* do nothing */
2788                 }
2789                 else if (step == 1) {
2790                         ret = prop_subscript_ass_array_slice(&self->ptr, self->prop, start, stop, len, value);
2791                 }
2792                 else {
2793                         PyErr_SetString(PyExc_TypeError, "slice steps not supported with rna");
2794                         ret = -1;
2795                 }
2796         }
2797         else {
2798                 PyErr_SetString(PyExc_AttributeError, "invalid key, key must be an int");
2799                 ret = -1;
2800         }
2801
2802         if (ret != -1) {
2803                 if (RNA_property_update_check(self->prop)) {
2804                         RNA_property_update(BPy_GetContext(), &self->ptr, self->prop);
2805                 }
2806         }
2807
2808         return ret;
2809 }
2810
2811 /* for slice only */
2812 static PyMappingMethods pyrna_prop_array_as_mapping = {
2813         (lenfunc) pyrna_prop_array_length,               /* mp_length */
2814         (binaryfunc) pyrna_prop_array_subscript,         /* mp_subscript */
2815         (objobjargproc) pyrna_prop_array_ass_subscript,  /* mp_ass_subscript */
2816 };
2817
2818 static PyMappingMethods pyrna_prop_collection_as_mapping = {
2819         (lenfunc) pyrna_prop_collection_length,               /* mp_length */
2820         (binaryfunc) pyrna_prop_collection_subscript,         /* mp_subscript */
2821         (objobjargproc) pyrna_prop_collection_ass_subscript,  /* mp_ass_subscript */
2822 };
2823
2824 /* only for fast bool's, large structs, assign nb_bool on init */
2825 static PyNumberMethods pyrna_prop_array_as_number = {
2826         NULL, /* nb_add */
2827         NULL, /* nb_subtract */
2828         NULL, /* nb_multiply */
2829         NULL, /* nb_remainder */
2830         NULL, /* nb_divmod */
2831         NULL, /* nb_power */
2832         NULL, /* nb_negative */
2833         NULL, /* nb_positive */
2834         NULL, /* nb_absolute */
2835         (inquiry) pyrna_prop_array_bool, /* nb_bool */
2836 };
2837 static PyNumberMethods pyrna_prop_collection_as_number = {
2838         NULL, /* nb_add */
2839         NULL, /* nb_subtract */
2840         NULL, /* nb_multiply */
2841         NULL, /* nb_remainder */
2842         NULL, /* nb_divmod */
2843         NULL, /* nb_power */
2844         NULL, /* nb_negative */
2845         NULL, /* nb_positive */
2846         NULL, /* nb_absolute */
2847         (inquiry) pyrna_prop_collection_bool, /* nb_bool */
2848 };
2849
2850 static int pyrna_prop_array_contains(BPy_PropertyRNA *self, PyObject *value)
2851 {
2852         return pyrna_array_contains_py(&self->ptr, self->prop, value);
2853 }
2854
2855 static int pyrna_prop_collection_contains(BPy_PropertyRNA *self, PyObject *key)
2856 {
2857         PointerRNA newptr; /* not used, just so RNA_property_collection_lookup_string runs */
2858
2859         if (PyTuple_Check(key)) {
2860                 /* special case, for ID datablocks we */
2861                 return pyrna_prop_collection_subscript_str_lib_pair_ptr(self, key,
2862                                                                         "(id, lib) in bpy_prop_collection", false, NULL);
2863         }
2864         else {
2865
2866                 /* key in dict style check */
2867                 const char *keyname = _PyUnicode_AsString(key);
2868
2869                 if (keyname == NULL) {
2870                         PyErr_SetString(PyExc_TypeError,
2871                                         "bpy_prop_collection.__contains__: expected a string or a tuple of strings");
2872                         return -1;
2873                 }
2874
2875                 if (RNA_property_collection_lookup_string(&self->ptr, self->prop, keyname, &newptr))
2876                         return 1;
2877
2878                 return 0;
2879         }
2880 }
2881
2882 static int pyrna_struct_contains(BPy_StructRNA *self, PyObject *value)
2883 {
2884         IDProperty *group;
2885         const char *name = _PyUnicode_AsString(value);
2886
2887         PYRNA_STRUCT_CHECK_INT(self);
2888
2889         if (!name) {
2890                 PyErr_SetString(PyExc_TypeError, "bpy_struct.__contains__: expected a string");
2891                 return -1;
2892         }
2893
2894         if (RNA_struct_idprops_check(self->ptr.type) == 0) {
2895                 PyErr_SetString(PyExc_TypeError, "bpy_struct: this type doesn't support IDProperties");
2896                 return -1;
2897         }
2898
2899         group = RNA_struct_idprops(&self->ptr, 0);
2900
2901         if (!group)
2902                 return 0;
2903
2904         return IDP_GetPropertyFromGroup(group, name) ? 1 : 0;
2905 }
2906
2907 static PySequenceMethods pyrna_prop_array_as_sequence = {
2908         (lenfunc)pyrna_prop_array_length,       /* Cant set the len otherwise it can evaluate as false */
2909         NULL,       /* sq_concat */
2910         NULL,       /* sq_repeat */
2911         (ssizeargfunc)pyrna_prop_array_subscript_int, /* sq_item */ /* Only set this so PySequence_Check() returns True */
2912         NULL,       /* sq_slice */
2913         (ssizeobjargproc)prop_subscript_ass_array_int,      /* sq_ass_item */
2914         NULL,       /* *was* sq_ass_slice */
2915         (objobjproc)pyrna_prop_array_contains,  /* sq_contains */
2916         (binaryfunc) NULL, /* sq_inplace_concat */
2917         (ssizeargfunc) NULL, /* sq_inplace_repeat */
2918 };
2919
2920 static PySequenceMethods pyrna_prop_collection_as_sequence = {
2921         (lenfunc)pyrna_prop_collection_length,      /* Cant set the len otherwise it can evaluate as false */
2922         NULL,       /* sq_concat */
2923         NULL,       /* sq_repeat */
2924         (ssizeargfunc)pyrna_prop_collection_subscript_int, /* sq_item */ /* Only set this so PySequence_Check() returns True */
2925         NULL,       /* *was* sq_slice */
2926         (ssizeobjargproc)/* pyrna_prop_collection_ass_subscript_int */ NULL /* let mapping take this one */, /* sq_ass_item */
2927         NULL,       /* *was* sq_ass_slice */
2928         (objobjproc)pyrna_prop_collection_contains, /* sq_contains */
2929         (binaryfunc) NULL, /* sq_inplace_concat */
2930         (ssizeargfunc) NULL, /* sq_inplace_repeat */
2931 };
2932
2933 static PySequenceMethods pyrna_struct_as_sequence = {
2934         NULL,       /* Cant set the len otherwise it can evaluate as false */
2935         NULL,       /* sq_concat */
2936         NULL,       /* sq_repeat */
2937         NULL,       /* sq_item */ /* Only set this so PySequence_Check() returns True */
2938         NULL,       /* *was* sq_slice */
2939         NULL,       /* sq_ass_item */
2940         NULL,       /* *was* sq_ass_slice */
2941         (objobjproc)pyrna_struct_contains,  /* sq_contains */
2942         (binaryfunc) NULL, /* sq_inplace_concat */
2943         (ssizeargfunc) NULL, /* sq_inplace_repeat */
2944 };
2945
2946 static PyObject *pyrna_struct_subscript(BPy_StructRNA *self, PyObject *key)
2947 {
2948         /* mostly copied from BPy_IDGroup_Map_GetItem */
2949         IDProperty *group, *idprop;
2950         const char *name = _PyUnicode_AsString(key);
2951
2952         PYRNA_STRUCT_CHECK_OBJ(self);
2953
2954         if (RNA_struct_idprops_check(self->ptr.type) == 0) {
2955                 PyErr_SetString(PyExc_TypeError, "this type doesn't support IDProperties");
2956                 return NULL;
2957         }
2958
2959         if (name == NULL) {
2960                 PyErr_SetString(PyExc_TypeError, "bpy_struct[key]: only strings are allowed as keys of ID properties");
2961                 return NULL;
2962         }
2963
2964         group = RNA_struct_idprops(&self->ptr, 0);
2965
2966