4 #include "eo_private.h"
8 typedef size_t Eo_Class_Id;
10 /* Used inside the class_get functions of classes, see #EO_DEFINE_CLASS */
11 EAPI Eina_Lock _eo_class_creation_lock;
14 static Eo_Class **_eo_classes;
15 static Eo_Class_Id _eo_classes_last_id;
16 static Eina_Bool _eo_init_count = 0;
18 static void _eo_constructor(Eo *obj, const Eo_Class *klass);
19 static void _eo_destructor(Eo *obj, const Eo_Class *klass);
20 static inline Eina_Bool _eo_error_get(const Eo *obj);
21 static inline void _eo_error_unset(Eo *obj);
22 static inline void *_eo_data_get(const Eo *obj, const Eo_Class *klass);
23 static inline Eo *_eo_ref(Eo *obj);
24 static inline void _eo_unref(Eo *obj);
29 const Eo_Class **kls_itr;
35 const Eo_Class *klass;
41 Eina_List *composite_objects;
46 Eina_Bool construct_error:1;
50 /* Dich search, split to 0xff 0xff 0xffff */
52 #define DICH_CHAIN1_MASK (0xffff)
53 #define DICH_CHAIN_LAST_MASK (0xffff)
54 #define DICH_CHAIN1(x) (((x) >> 16) & DICH_CHAIN1_MASK)
55 #define DICH_CHAIN_LAST(x) ((x) & DICH_CHAIN_LAST_MASK)
57 #define OP_CLASS_OFFSET 16
58 #define OP_CLASS_OFFSET_GET(x) (((x) >> OP_CLASS_OFFSET) & 0xffff)
59 #define OP_CLASS_GET(op) ({ \
60 Eo_Class_Id tmp = OP_CLASS_OFFSET_GET(op); \
63 #define OP_SUB_ID_GET(op) ((op) & 0xffff)
65 #define ID_CLASS_GET(id) ({ \
66 (Eo_Class *) ((id <= _eo_classes_last_id) && (id > 0)) ? \
67 (_eo_classes[id - 1]) : NULL; \
70 #define EO_ALIGN_SIZE(size) \
71 ((size) + (sizeof(void *) - ((size) % sizeof(void *))))
73 /* Structure of Eo_Op is:
78 typedef struct _Dich_Chain1 Dich_Chain1;
94 const Eo_Class *klass;
99 const Eo_Class *klass;
101 } Eo_Extension_Data_Offset;
106 Eo_Class_Id class_id;
107 const Eo_Class *parent;
108 const Eo_Class_Description *desc;
109 Dich_Chain1 *chain; /**< The size is class_id */
110 Eina_Inlist *extensions;
112 Eo_Extension_Data_Offset *extn_data_off;
113 size_t extn_data_size;
115 const Eo_Class **mro;
118 size_t data_offset; /* < Offset of the data within object data. */
120 Eina_Bool constructed : 1;
124 _dich_chain_alloc(Dich_Chain1 *chain1, size_t num_ops)
128 chain1->funcs = calloc(num_ops, sizeof(*(chain1->funcs)));
133 _dich_copy_all(Eo_Class *dst, const Eo_Class *src)
135 if (!src->chain) return;
139 dst->chain = calloc(dst->class_id, sizeof(*dst->chain));
143 const Dich_Chain1 *sc1 = src->chain;
144 Dich_Chain1 *dc1 = dst->chain;
145 for (i = 0 ; i < src->class_id ; i++, sc1++, dc1++)
150 const Eo_Class *op_klass = ID_CLASS_GET(i + 1);
151 /* Can be NULL because of future static classes. */
155 size_t num_ops = op_klass->desc->ops.count;
156 _dich_chain_alloc(dc1, num_ops);
158 const op_type_funcs *sf = sc1->funcs;
159 op_type_funcs *df = dc1->funcs;
160 for (j = 0 ; j < num_ops ; j++, df++, sf++)
164 memcpy(df, sf, sizeof(*df));
171 static inline const op_type_funcs *
172 _dich_func_get(const Eo_Class *klass, Eo_Op op)
174 if (!klass->chain) return NULL;
176 size_t idx1 = DICH_CHAIN1(op) - 1;
177 if (idx1 >= klass->class_id) return NULL;
178 const Dich_Chain1 *chain1 = &klass->chain[idx1];
179 if (!chain1->funcs) return NULL;
181 size_t idxl = DICH_CHAIN_LAST(op);
182 /* num_ops is calculated from the class. */
183 const Eo_Class *op_klass = ID_CLASS_GET(idx1 + 1);
184 if (!op_klass || (idxl >= op_klass->desc->ops.count))
187 return &chain1->funcs[idxl];
191 _dich_func_set(Eo_Class *klass, Eo_Op op, eo_op_func_type func)
193 const Eo_Class *op_klass = OP_CLASS_GET(op);
196 /* Verify op is valid. */
199 /* num_ops is calculated from the class. */
200 num_ops = op_klass->desc->ops.count;
201 if (DICH_CHAIN_LAST(op) >= num_ops)
203 ERR("OP %x is too big for the domain '%s', expected value < %x.",
204 op, op_klass->desc->name, op_klass->desc->ops.count);
210 ERR("OP %x is from an illegal class.", op);
216 klass->chain = calloc(klass->class_id, sizeof(*klass->chain));
219 size_t idx1 = DICH_CHAIN1(op) - 1;
220 Dich_Chain1 *chain1 = &klass->chain[idx1];
221 _dich_chain_alloc(chain1, num_ops);
222 chain1->funcs[DICH_CHAIN_LAST(op)].func = func;
223 chain1->funcs[DICH_CHAIN_LAST(op)].src = klass;
227 _dich_func_clean_all(Eo_Class *klass)
230 Dich_Chain1 *chain1 = klass->chain;
235 for (i = 0 ; i < klass->class_id ; i++, chain1++)
246 static const Eo_Op_Description noop_desc =
247 EO_OP_DESCRIPTION(EO_NOOP, "", "No operation.");
249 static const Eo_Op_Description *
250 _eo_op_id_desc_get(Eo_Op op)
252 const Eo_Class *klass = OP_CLASS_GET(op);
253 Eo_Op sub_id = OP_SUB_ID_GET(op);
258 if (klass && (sub_id < klass->desc->ops.count))
259 return klass->desc->ops.descs + sub_id;
265 _eo_op_id_name_get(Eo_Op op)
267 const Eo_Op_Description *desc = _eo_op_id_desc_get(op);
268 return (desc) ? desc->name : NULL;
272 _eo_kls_itr_init(const Eo_Class *obj_klass, Eo_Kls_Itr *cur, Eo_Op op, Eo_Kls_Itr *prev_state)
274 prev_state->op = cur->op;
275 prev_state->kls_itr = cur->kls_itr;
277 /* If we are in a constructor/destructor or we changed an op - init. */
278 if ((op == EO_NOOP) || (cur->op != op))
281 cur->kls_itr = obj_klass->mro;
286 _eo_kls_itr_end(Eo_Kls_Itr *cur, Eo_Kls_Itr *prev_state)
288 if (cur->op != prev_state->op)
290 cur->op = prev_state->op;
291 cur->kls_itr = prev_state->kls_itr;
295 static inline const Eo_Class *
296 _eo_kls_itr_get(Eo_Kls_Itr *cur)
298 return (cur->kls_itr) ? *(cur->kls_itr) : NULL;
301 static inline const Eo_Class *
302 _eo_kls_itr_next(Eo_Kls_Itr *cur, Eo_Op op)
306 Eo_Op node_op = cur->op;
307 ERR("Called with op %d ('%s') while expecting: %d ('%s'). This probaly means you called eo_*_super functions from a wrong place.",
308 op, _eo_op_id_name_get(op),
309 node_op, _eo_op_id_name_get(node_op));
313 const Eo_Class **kls_itr = cur->kls_itr;
318 const op_type_funcs *fsrc = _dich_func_get(*kls_itr, op);
320 while (*kls_itr && (*(kls_itr++) != fsrc->src))
328 cur->kls_itr = kls_itr;
337 static inline Eina_Bool
338 _eo_kls_itr_reached_end(const Eo_Kls_Itr *cur)
340 const Eo_Class **kls_itr = cur->kls_itr;
341 return !(*kls_itr && *(kls_itr + 1));
344 static inline const op_type_funcs *
345 _eo_kls_itr_func_get(const Eo_Class *klass, Eo_Kls_Itr *mro_itr, Eo_Op op, Eo_Kls_Itr *prev_state)
347 _eo_kls_itr_init(klass, mro_itr, op, prev_state);
348 klass = _eo_kls_itr_get(mro_itr);
351 const op_type_funcs *func = _dich_func_get(klass, op);
353 if (func && func->func)
362 #define _EO_OP_ERR_NO_OP_PRINT(op, klass) \
365 const Eo_Class *op_klass = OP_CLASS_GET(op); \
366 const char *_dom_name = (op_klass) ? op_klass->desc->name : NULL; \
367 ERR("Can't find func for op %x ('%s' of domain '%s') for class '%s'. Aborting.", \
368 op, _eo_op_id_name_get(op), _dom_name, \
369 (klass) ? klass->desc->name : NULL); \
374 _eo_op_internal(Eo *obj, Eo_Op_Type op_type, Eo_Op op, va_list *p_list)
376 Eina_Bool ret = EINA_FALSE;
378 const Eo_Op_Description *op_desc = _eo_op_id_desc_get(op);
382 if (op_desc->op_type == EO_OP_TYPE_CLASS)
384 ERR("Tried calling a class op '%s' (%d) from a non-class context.", (op_desc) ? op_desc->name : NULL, op);
387 else if ((op_type == EO_OP_TYPE_CONST) &&
388 (op_desc->op_type != EO_OP_TYPE_CONST))
390 ERR("Tried calling non-const or non-existant op '%s' (%d) from a const (query) function.", (op_desc) ? op_desc->name : NULL, op);
395 Eo_Kls_Itr prev_state;
398 const op_type_funcs *func =
399 _eo_kls_itr_func_get(obj->klass, &obj->mro_itr, op, &prev_state);
402 func->func(obj, _eo_data_get(obj, func->src), p_list);
408 /* Try composite objects */
412 EINA_LIST_FOREACH(obj->composite_objects, itr, emb_obj)
414 if (_eo_op_internal(emb_obj, op_type, op, p_list))
423 _eo_kls_itr_end(&obj->mro_itr, &prev_state);
428 eo_do_internal(Eo *obj, Eo_Op_Type op_type, ...)
430 Eina_Bool ret = EINA_TRUE;
434 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, EINA_FALSE);
438 va_start(p_list, op_type);
440 op = va_arg(p_list, Eo_Op);
443 if (!_eo_op_internal(obj, op_type, op, &p_list))
445 _EO_OP_ERR_NO_OP_PRINT(op, obj->klass);
449 op = va_arg(p_list, Eo_Op);
459 eo_do_super_internal(Eo *obj, Eo_Op_Type op_type, Eo_Op op, ...)
461 const Eo_Class *nklass;
462 Eina_Bool ret = EINA_TRUE;
464 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, EINA_FALSE);
466 /* Advance the kls itr. */
467 nklass = _eo_kls_itr_next(&obj->mro_itr, op);
469 if (obj->mro_itr.op != op)
472 va_start(p_list, op);
473 if (!_eo_op_internal(obj, op_type, op, &p_list))
475 _EO_OP_ERR_NO_OP_PRINT(op, nklass);
484 _eo_class_op_internal(Eo_Class *klass, Eo_Op op, va_list *p_list)
486 Eina_Bool ret = EINA_FALSE;
488 const Eo_Op_Description *op_desc = _eo_op_id_desc_get(op);
492 if (op_desc->op_type != EO_OP_TYPE_CLASS)
494 ERR("Tried calling an instant op '%s' (%d) from a class context.", (op_desc) ? op_desc->name : NULL, op);
499 Eo_Kls_Itr prev_state;
502 const op_type_funcs *func =
503 _eo_kls_itr_func_get(klass, &klass->mro_itr, op, &prev_state);
506 ((eo_op_func_type_class) func->func)(klass, p_list);
513 _eo_kls_itr_end(&klass->mro_itr, &prev_state);
518 eo_class_do_internal(const Eo_Class *klass, ...)
520 Eina_Bool ret = EINA_TRUE;
524 EO_MAGIC_RETURN_VAL(klass, EO_CLASS_EINA_MAGIC, EINA_FALSE);
526 va_start(p_list, klass);
528 op = va_arg(p_list, Eo_Op);
531 if (!_eo_class_op_internal((Eo_Class *) klass, op, &p_list))
533 _EO_OP_ERR_NO_OP_PRINT(op, klass);
537 op = va_arg(p_list, Eo_Op);
546 eo_class_do_super_internal(const Eo_Class *klass, Eo_Op op, ...)
548 const Eo_Class *nklass;
549 Eina_Bool ret = EINA_TRUE;
551 EO_MAGIC_RETURN_VAL(klass, EO_CLASS_EINA_MAGIC, EINA_FALSE);
553 /* Advance the kls itr. */
554 nklass = _eo_kls_itr_next(&((Eo_Class *) klass)->mro_itr, op);
556 if (klass->mro_itr.op != op)
559 va_start(p_list, op);
560 if (!_eo_class_op_internal((Eo_Class *) klass, op, &p_list))
562 _EO_OP_ERR_NO_OP_PRINT(op, nklass);
570 EAPI const Eo_Class *
571 eo_class_get(const Eo *obj)
573 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, EINA_FALSE);
579 eo_class_name_get(const Eo_Class *klass)
581 EO_MAGIC_RETURN_VAL(klass, EO_CLASS_EINA_MAGIC, NULL);
583 return klass->desc->name;
587 _eo_class_base_op_init(Eo_Class *klass)
589 const Eo_Class_Description *desc = klass->desc;
590 if (!desc || !desc->ops.base_op_id)
593 /* FIXME: Depends on values defined above! */
594 *(desc->ops.base_op_id) = klass->class_id << OP_CLASS_OFFSET;
599 _eo_class_mro_has(const Eo_Class *klass, const Eo_Class *find)
601 const Eo_Class **itr;
602 for (itr = klass->mro ; *itr ; itr++)
615 _eo_class_mro_add(Eina_List *mro, const Eo_Class *klass)
617 Eina_List *extn_pos = NULL;
618 Eina_Bool check_consistency = !mro;
622 mro = eina_list_append(mro, klass);
624 /* Recursively add extenions. */
626 Eo_Extension_Node *extn;
627 EINA_INLIST_FOREACH(klass->extensions, extn)
629 mro = _eo_class_mro_add(mro, extn->klass);
630 /* Not possible: if (!mro) return NULL; */
632 if (check_consistency)
634 extn_pos = eina_list_append(extn_pos, eina_list_last(mro));
639 /* Check if we can create a consistent mro. We only do it for the class
640 * we are working on (i.e no parents). */
641 if (check_consistency)
643 Eo_Extension_Node *extn;
645 Eina_List *itr = extn_pos;
646 EINA_INLIST_FOREACH(klass->extensions, extn)
648 /* Get the first one after the extension. */
649 Eina_List *extn_list = eina_list_next(eina_list_data_get(itr));
651 /* If we found the extension again. */
652 if (eina_list_data_find_list(extn_list, extn->klass))
655 ERR("Cannot create a consistent method resolution order for class '%s' because of '%s'.", klass->desc->name, extn->klass->desc->name);
659 itr = eina_list_next(itr);
664 mro = _eo_class_mro_add(mro, klass->parent);
670 _eo_class_mro_init(Eo_Class *klass)
672 Eina_List *mro = NULL;
674 DBG("Started creating MRO for class '%s'", klass->desc->name);
675 mro = _eo_class_mro_add(mro, klass);
680 /* Remove duplicates and make them the right order. */
682 Eina_List *itr1, *itr2, *itr2n;
684 itr1 = eina_list_last(mro);
687 itr2 = eina_list_prev(itr1);
691 itr2n = eina_list_prev(itr2);
693 if (eina_list_data_get(itr1) == eina_list_data_get(itr2))
695 mro = eina_list_remove_list(mro, itr2);
701 itr1 = eina_list_prev(itr1);
705 /* Copy the mro and free the list. */
707 const Eo_Class *kls_itr;
708 const Eo_Class **mro_itr;
709 klass->mro = calloc(sizeof(*klass->mro), eina_list_count(mro) + 1);
711 mro_itr = klass->mro;
713 EINA_LIST_FREE(mro, kls_itr)
715 *(mro_itr++) = kls_itr;
717 DBG("Added '%s' to MRO", kls_itr->desc->name);
722 DBG("Finished creating MRO for class '%s'", klass->desc->name);
728 _eo_class_constructor(Eo_Class *klass)
730 if (klass->constructed)
733 klass->constructed = EINA_TRUE;
735 if (klass->desc->class_constructor)
736 klass->desc->class_constructor(klass);
740 eo_class_funcs_set(Eo_Class *klass, const Eo_Op_Func_Description *func_descs)
742 EO_MAGIC_RETURN(klass, EO_CLASS_EINA_MAGIC);
744 const Eo_Op_Func_Description *itr;
748 for ( ; itr->op != 0 ; itr++)
750 const Eo_Op_Description *op_desc = _eo_op_id_desc_get(itr->op);
752 if (EINA_LIKELY(!op_desc || (itr->op_type == op_desc->op_type)))
754 _dich_func_set(klass, itr->op, itr->func);
758 ERR("Set function's op type (%d) is different than the one in the op description (%d) for op '%s' in class '%s'.", itr->op_type, op_desc->op_type, op_desc->name, klass->desc->name);
765 eo_class_free(Eo_Class *klass)
767 if (klass->constructed)
769 if (klass->desc->class_destructor)
770 klass->desc->class_destructor(klass);
772 _dich_func_clean_all(klass);
777 Eo_Extension_Node *extn = NULL;
778 EINA_INLIST_FOREACH_SAFE(klass->extensions, itrn, extn)
787 if (klass->extn_data_off)
788 free(klass->extn_data_off);
795 _eo_class_check_op_descs(const Eo_Class *klass)
797 const Eo_Class_Description *desc = klass->desc;
798 const Eo_Op_Description *itr;
801 if (desc->ops.count > 0)
803 if (!desc->ops.base_op_id)
805 ERR("Class '%s' has a non-zero ops count, but base_id is NULL.",
810 if (!desc->ops.descs)
812 ERR("Class '%s' has a non-zero ops count, but there are no descs.",
818 itr = desc->ops.descs;
819 for (i = 0 ; i < desc->ops.count ; i++, itr++)
821 if (itr->sub_op != i)
825 ERR("Wrong order in Ops description for class '%s'. Expected %d and got %d", desc->name, i, itr->sub_op);
829 ERR("Found too few Ops description for class '%s'. Expected %d descriptions, but found %d.", desc->name, desc->ops.count, i);
835 if (itr && itr->name)
837 ERR("Found extra Ops description for class '%s'. Expected %d descriptions, but found more.", desc->name, desc->ops.count);
844 EAPI const Eo_Class *
845 eo_class_new(const Eo_Class_Description *desc, const Eo_Class *parent, ...)
850 if (parent && !EINA_MAGIC_CHECK(parent, EO_CLASS_EINA_MAGIC))
852 EINA_MAGIC_FAIL(parent, EO_CLASS_EINA_MAGIC);
856 va_start(p_list, parent);
858 EINA_SAFETY_ON_NULL_RETURN_VAL(desc, NULL);
859 EINA_SAFETY_ON_NULL_RETURN_VAL(desc->name, NULL);
861 /* Check restrictions on Interface types. */
862 if (desc->type == EO_CLASS_TYPE_INTERFACE)
864 EINA_SAFETY_ON_FALSE_RETURN_VAL(!desc->constructor, NULL);
865 EINA_SAFETY_ON_FALSE_RETURN_VAL(!desc->destructor, NULL);
866 EINA_SAFETY_ON_FALSE_RETURN_VAL(!desc->class_constructor, NULL);
867 EINA_SAFETY_ON_FALSE_RETURN_VAL(!desc->class_destructor, NULL);
868 EINA_SAFETY_ON_FALSE_RETURN_VAL(!desc->data_size, NULL);
871 klass = calloc(1, sizeof(Eo_Class));
872 klass->parent = parent;
874 /* Handle class extensions */
876 Eo_Class *extn = NULL;
878 extn = va_arg(p_list, Eo_Class *);
881 switch (extn->desc->type)
883 case EO_CLASS_TYPE_REGULAR:
884 case EO_CLASS_TYPE_REGULAR_NO_INSTANT:
885 /* Use it like an interface. */
886 case EO_CLASS_TYPE_INTERFACE:
888 case EO_CLASS_TYPE_MIXIN:
890 Eo_Extension_Node *node = calloc(1, sizeof(*node));
893 eina_inlist_append(klass->extensions,
894 EINA_INLIST_GET(node));
899 extn = va_arg(p_list, Eo_Class *);
905 /* Handle the inheritance */
908 /* Verify the inheritance is allowed. */
909 switch (klass->desc->type)
911 case EO_CLASS_TYPE_REGULAR:
912 case EO_CLASS_TYPE_REGULAR_NO_INSTANT:
913 if ((klass->parent->desc->type != EO_CLASS_TYPE_REGULAR) &&
914 (klass->parent->desc->type != EO_CLASS_TYPE_REGULAR_NO_INSTANT))
916 ERR("Regular classes ('%s') aren't allowed to inherit from non-regular classes ('%s').", klass->desc->name, klass->parent->desc->name);
920 case EO_CLASS_TYPE_INTERFACE:
921 case EO_CLASS_TYPE_MIXIN:
922 if ((klass->parent->desc->type != EO_CLASS_TYPE_INTERFACE) &&
923 (klass->parent->desc->type != EO_CLASS_TYPE_MIXIN))
925 ERR("Non-regular classes ('%s') aren't allowed to inherit from regular classes ('%s').", klass->desc->name, klass->parent->desc->name);
932 /* Update the current offset. */
933 /* FIXME: Make sure this alignment is enough. */
934 klass->data_offset = klass->parent->data_offset +
935 EO_ALIGN_SIZE(klass->parent->desc->data_size);
938 if (!_eo_class_check_op_descs(klass))
943 if (!_eo_class_mro_init(klass))
948 /* create MIXIN offset table. */
950 const Eo_Class **mro_itr = klass->mro;
951 Eo_Extension_Data_Offset *extn_data_itr;
953 size_t extn_data_off = klass->data_offset +
954 EO_ALIGN_SIZE(klass->desc->data_size);
956 /* FIXME: Make faster... */
959 if (((*mro_itr)->desc->type == EO_CLASS_TYPE_MIXIN) &&
960 ((*mro_itr)->desc->data_size > 0))
967 klass->extn_data_off = calloc(extn_num + 1,
968 sizeof(*klass->extn_data_off));
970 extn_data_itr = klass->extn_data_off;
971 mro_itr = klass->mro;
974 if (((*mro_itr)->desc->type == EO_CLASS_TYPE_MIXIN) &&
975 ((*mro_itr)->desc->data_size > 0))
977 extn_data_itr->klass = *mro_itr;
978 extn_data_itr->offset = extn_data_off;
980 extn_data_off += EO_ALIGN_SIZE(extn_data_itr->klass->desc->data_size);
986 klass->extn_data_size = extn_data_off;
989 eina_lock_take(&_eo_class_creation_lock);
990 klass->class_id = ++_eo_classes_last_id;
992 /* FIXME: Handle errors. */
994 tmp = realloc(_eo_classes, _eo_classes_last_id * sizeof(*_eo_classes));
996 _eo_classes[klass->class_id - 1] = klass;
998 eina_lock_release(&_eo_class_creation_lock);
1000 EINA_MAGIC_SET(klass, EO_CLASS_EINA_MAGIC);
1002 /* Flatten the function array */
1004 const Eo_Class **mro_itr = klass->mro;
1005 for ( ; *mro_itr ; mro_itr++)
1008 for ( mro_itr-- ; mro_itr >= klass->mro ; mro_itr--)
1010 _dich_copy_all(klass, *mro_itr);
1014 _eo_class_base_op_init(klass);
1016 _eo_class_constructor(klass);
1023 eo_class_free(klass);
1028 eo_add(const Eo_Class *klass, Eo *parent)
1030 EO_MAGIC_RETURN_VAL(klass, EO_CLASS_EINA_MAGIC, NULL);
1032 if (parent) EO_MAGIC_RETURN_VAL(parent, EO_EINA_MAGIC, NULL);
1034 if (EINA_UNLIKELY(klass->desc->type != EO_CLASS_TYPE_REGULAR))
1036 ERR("Class '%s' is not instantiate-able. Aborting.", klass->desc->name);
1040 Eo *obj = calloc(1, EO_ALIGN_SIZE(sizeof(*obj)) +
1041 (klass->data_offset + EO_ALIGN_SIZE(klass->desc->data_size)) +
1042 klass->extn_data_size);
1044 obj->parent = parent;
1048 Eo_Kls_Itr prev_state;
1050 _eo_kls_itr_init(klass, &obj->mro_itr, EO_NOOP, &prev_state);
1051 _eo_error_unset(obj);
1053 EINA_MAGIC_SET(obj, EO_EINA_MAGIC);
1055 _eo_constructor(obj, klass);
1057 if (EINA_UNLIKELY(_eo_error_get(obj)))
1059 ERR("Type '%s' - One of the object constructors have failed.", klass->desc->name);
1063 if (EINA_UNLIKELY(!_eo_kls_itr_reached_end(&obj->mro_itr)))
1065 ERR("Type '%s' - Not all of the object constructors have been executed.", klass->desc->name);
1068 _eo_kls_itr_end(&obj->mro_itr, &prev_state);
1074 _eo_kls_itr_end(&obj->mro_itr, &prev_state);
1075 /* Unref twice, once for the ref above, and once for the basic object ref. */
1090 eo_xref_internal(Eo *obj, const Eo *ref_obj, const char *file, int line)
1092 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, obj);
1097 Eo_Xref_Node *xref = calloc(1, sizeof(*xref));
1098 xref->ref_obj = ref_obj;
1102 /* FIXME: Make it sorted. */
1103 obj->xrefs = eina_inlist_prepend(obj->xrefs, EINA_INLIST_GET(xref));
1114 eo_xunref(Eo *obj, const Eo *ref_obj)
1116 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1118 Eo_Xref_Node *xref = NULL;
1119 EINA_INLIST_FOREACH(obj->xrefs, xref)
1121 if (xref->ref_obj == ref_obj)
1127 obj->xrefs = eina_inlist_remove(obj->xrefs, EINA_INLIST_GET(xref));
1132 ERR("ref_obj (%p) does not reference obj (%p). Aborting unref.", ref_obj, obj);
1149 eo_ref(const Eo *_obj)
1151 Eo *obj = (Eo *) _obj;
1152 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, obj);
1154 return _eo_ref(obj);
1158 _eo_del_internal(Eo *obj)
1162 /* We need that for the event callbacks that may ref/unref. */
1165 eo_do(obj, eo_event_callback_call(EO_EV_DEL, NULL, NULL));
1166 obj->del = EINA_TRUE;
1168 const Eo_Class *klass = eo_class_get(obj);
1169 Eo_Kls_Itr prev_state;
1171 _eo_kls_itr_init(klass, &obj->mro_itr, EO_NOOP, &prev_state);
1172 _eo_error_unset(obj);
1173 _eo_destructor(obj, klass);
1174 if (_eo_error_get(obj))
1176 ERR("Type '%s' - One of the object destructors have failed.", klass->desc->name);
1179 if (!_eo_kls_itr_reached_end(&obj->mro_itr))
1181 ERR("Type '%s' - Not all of the object destructors have been executed.", klass->desc->name);
1183 _eo_kls_itr_end(&obj->mro_itr, &prev_state);
1184 /*FIXME: add eo_class_unref(klass) ? - just to clear the caches. */
1186 Eina_List *itr, *itr_n;
1188 EINA_LIST_FOREACH_SAFE(obj->composite_objects, itr, itr_n, emb_obj)
1190 eo_composite_object_detach(obj, emb_obj);
1199 if (--(obj->refcount) == 0)
1201 _eo_del_internal(obj);
1204 /* If for some reason it's not empty, clear it. */
1207 WRN("obj->xrefs is not empty, possibly a bug, please report. - An error will be reported for each xref in the stack.");
1208 Eina_Inlist *nitr = obj->xrefs->next;
1209 free(EINA_INLIST_CONTAINER_GET(obj->xrefs, Eo_Xref_Node));
1214 EINA_MAGIC_SET(obj, EO_DELETED_EINA_MAGIC);
1220 eo_unref(const Eo *_obj)
1222 Eo *obj = (Eo *) _obj;
1223 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1229 eo_ref_get(const Eo *obj)
1231 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, 0);
1233 return obj->refcount;
1239 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1241 _eo_del_internal(obj);
1246 eo_parent_get(const Eo *obj)
1248 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, NULL);
1254 eo_error_set_internal(const Eo *obj, const char *file, int line)
1256 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1258 ERR("Error with obj '%p' at %s:%d", obj, file, line);
1260 ((Eo *) obj)->construct_error = EINA_TRUE;
1264 _eo_error_unset(Eo *obj)
1266 obj->construct_error = EINA_FALSE;
1271 * @brief Check if there was an error when constructing, destructing or calling a function of the object.
1272 * @param obj the object to work on.
1273 * @return @c EINA_TRUE if there was an error.
1275 static inline Eina_Bool
1276 _eo_error_get(const Eo *obj)
1278 return obj->construct_error;
1282 _eo_constructor_default(Eo *obj)
1284 eo_constructor_super(obj);
1288 _eo_destructor_default(Eo *obj)
1290 eo_destructor_super(obj);
1294 _eo_constructor(Eo *obj, const Eo_Class *klass)
1299 if (klass->desc->constructor)
1300 klass->desc->constructor(obj, _eo_data_get(obj, klass));
1302 _eo_constructor_default(obj);
1306 _eo_destructor(Eo *obj, const Eo_Class *klass)
1311 if (klass->desc->destructor)
1312 klass->desc->destructor(obj, _eo_data_get(obj, klass));
1314 _eo_destructor_default(obj);
1318 eo_constructor_super(Eo *obj)
1320 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1322 _eo_constructor(obj, _eo_kls_itr_next(&obj->mro_itr, EO_NOOP));
1326 eo_destructor_super(Eo *obj)
1328 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1330 _eo_destructor(obj, _eo_kls_itr_next(&obj->mro_itr, EO_NOOP));
1333 static inline void *
1334 _eo_data_get(const Eo *obj, const Eo_Class *klass)
1336 if (EINA_LIKELY(klass->desc->data_size > 0))
1338 if (EINA_UNLIKELY(klass->desc->type == EO_CLASS_TYPE_MIXIN))
1340 Eo_Extension_Data_Offset *doff_itr =
1341 eo_class_get(obj)->extn_data_off;
1346 while (doff_itr->klass)
1348 if (doff_itr->klass == klass)
1349 return ((char *) obj) + EO_ALIGN_SIZE(sizeof(*obj)) +
1356 return ((char *) obj) + EO_ALIGN_SIZE(sizeof(*obj)) +
1365 eo_data_get(const Eo *obj, const Eo_Class *klass)
1368 EO_MAGIC_RETURN_VAL(obj, EO_EINA_MAGIC, NULL);
1371 if (!_eo_class_mro_has(obj->klass, klass))
1373 ERR("Tried getting data of class '%s' from object of class '%s', but the former is not a direct inheritance of the latter.", klass->desc->name, obj->klass->desc->name);
1378 ret = _eo_data_get(obj, klass);
1380 if (!ret && (klass->desc->data_size == 0))
1382 ERR("Tried getting data of class '%s', but it has none..", klass->desc->name);
1391 const char *log_dom = "eo";
1392 if (_eo_init_count++ > 0)
1398 _eo_classes_last_id = 0;
1399 _eo_log_dom = eina_log_domain_register(log_dom, EINA_COLOR_LIGHTBLUE);
1400 if (_eo_log_dom < 0)
1402 EINA_LOG_ERR("Could not register log domain: %s", log_dom);
1406 if (!eina_lock_new(&_eo_class_creation_lock))
1408 EINA_LOG_ERR("Could not init lock.");
1412 eina_magic_string_static_set(EO_EINA_MAGIC, EO_EINA_MAGIC_STR);
1413 eina_magic_string_static_set(EO_DELETED_EINA_MAGIC,
1414 EO_DELETED_EINA_MAGIC_STR);
1415 eina_magic_string_static_set(EO_CLASS_EINA_MAGIC,
1416 EO_CLASS_EINA_MAGIC_STR);
1425 Eo_Class **cls_itr = _eo_classes;
1427 if (--_eo_init_count > 0)
1430 for (i = 0 ; i < _eo_classes_last_id ; i++, cls_itr++)
1433 eo_class_free(*cls_itr);
1439 eina_lock_free(&_eo_class_creation_lock);
1441 eina_log_domain_unregister(_eo_log_dom);
1449 eo_composite_object_attach(Eo *obj, Eo *emb_obj)
1451 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1452 EO_MAGIC_RETURN(emb_obj, EO_EINA_MAGIC);
1454 eo_xref(emb_obj, obj);
1455 obj->composite_objects = eina_list_prepend(obj->composite_objects, emb_obj);
1459 eo_composite_object_detach(Eo *obj, Eo *emb_obj)
1461 EO_MAGIC_RETURN(obj, EO_EINA_MAGIC);
1462 EO_MAGIC_RETURN(emb_obj, EO_EINA_MAGIC);
1464 obj->composite_objects = eina_list_remove(obj->composite_objects, emb_obj);
1465 eo_xunref(emb_obj, obj);
1469 eo_composite_is(Eo *emb_obj)
1471 if (!EINA_MAGIC_CHECK(emb_obj, EO_EINA_MAGIC))
1473 EINA_MAGIC_FAIL(emb_obj, EO_EINA_MAGIC);
1477 Eo *obj = eo_parent_get(emb_obj);
1484 EINA_LIST_FOREACH(obj->composite_objects, itr, tmp)