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core: iterator: implement const iterators

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max 🍓
2025-11-01 09:58:18 +00:00
parent 0cbab62391
commit 493b9ec4a4
3 changed files with 60 additions and 12 deletions
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37
core/include/blue/core/iterator.h
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@@ -9,9 +9,26 @@
B_DECLS_BEGIN;
#define b_foreach(type, var, iterator) \
for (type var = (type)b_iterator_value(iterator).v_int; var != NULL; \
b_iterator_next(iterator), \
var = (type)b_iterator_value(iterator).v_int)
for (type var = (type)b_iterator_get_value(iterator).v_int; \
B_OK(b_iterator_get_status(iterator)); \
b_iterator_move_next(iterator), \
var = (type)b_iterator_get_value(iterator).v_int)
#define b_foreach_ptr(type, var, iterator) \
for (type *var = (type *)b_iterator_get_value(iterator).v_ptr; \
B_OK(b_iterator_get_status(iterator)); \
b_iterator_move_next(iterator), \
var = (type *)b_iterator_get_value(iterator).v_ptr)
#define b_foreach_c(type, var, iterator) \
for (type var = (type)b_iterator_get_cvalue(iterator).v_int; \
B_OK(b_iterator_get_status(iterator)); \
b_iterator_move_next(iterator), \
var = (type)b_iterator_get_cvalue(iterator).v_int)
#define b_foreach_cptr(type, var, iterator) \
for (const type *var \
= (const type *)b_iterator_get_cvalue(iterator).v_cptr; \
B_OK(b_iterator_get_status(iterator)); \
b_iterator_move_next(iterator), \
var = (const type *)b_iterator_get_cvalue(iterator).v_cptr)
#define B_ITERATOR_VALUE_INT(v) ((b_iterator_value) {.v_int = (v)})
#define B_ITERATOR_VALUE_PTR(v) ((b_iterator_value) {.v_ptr = (v)})
@@ -28,7 +45,8 @@ typedef union b_iterator_value {
const void *v_cptr;
} b_iterator_value;
B_DECLARE_TYPE(b_iterator);
__B_DECLARE_TYPE(b_iterator);
B_DECLARE_TYPE(b_iterable);
B_TYPE_CLASS_DECLARATION_BEGIN(b_iterator)
@@ -46,13 +64,22 @@ B_TYPE_CLASS_DECLARATION_END(b_iterable)
BLUE_API b_type b_iterator_get_type(void);
BLUE_API b_type b_iterable_get_type(void);
static inline const b_iterator *b_iterator_ref(const b_iterator *p)
{
return b_object_ref((b_object *)p);
}
static inline void b_iterator_unref(const b_iterator *p)
{
b_object_unref((b_object *)p);
}
BLUE_API b_iterator *b_iterator_begin(b_iterable *it);
BLUE_API const b_iterator *b_iterator_cbegin(const b_iterable *it);
BLUE_API b_status b_iterator_get_status(const b_iterator *it);
BLUE_API b_status b_iterator_set_status(const b_iterator *it, b_status status);
BLUE_API b_status b_iterator_next(const b_iterator *it);
BLUE_API b_status b_iterator_move_next(const b_iterator *it);
BLUE_API b_iterator_value b_iterator_get_value(b_iterator *it);
BLUE_API const b_iterator_value b_iterator_get_cvalue(const b_iterator *it);
BLUE_API b_status b_iterator_erase(b_iterator *it);

7
core/include/blue/core/macros.h
View File

@@ -92,9 +92,12 @@
/* Type declaration macros (for use in .h header file) */
#define B_DECLARE_TYPE(name) \
#define __B_DECLARE_TYPE(name) \
typedef B_TYPE_FWDREF(name) name; \
typedef struct _##name##_class name##_class; \
typedef struct _##name##_class name##_class;
#define B_DECLARE_TYPE(name) \
__B_DECLARE_TYPE(name); \
static inline name *name##_ref(name *p) \
{ \
return b_object_ref(p); \

28
core/iterator.c
View File

@@ -41,10 +41,19 @@ enum b_status b_iterator_set_status(const b_iterator *it, b_status status)
B_CLASS_DISPATCH_STATIC(B_TYPE_ITERATOR, iterator_set_status, it, status);
}
b_status b_iterator_move_next(b_iterator *it)
enum b_status b_iterator_move_next(const b_iterator *it)
{
B_CLASS_DISPATCH_VIRTUAL_0(
b_iterator, B_TYPE_ITERATOR, B_ERR_NOT_SUPPORTED, it_move_next, it);
enum b_status status = B_ERR_NOT_SUPPORTED;
b_iterator_class *iface = b_object_get_interface(it, B_TYPE_ITERATOR);
if (iface && iface->it_move_next) {
status = iface->it_move_next(it);
}
struct b_iterator_p *p = b_object_get_private(it, B_TYPE_ITERATOR);
p->it_status = status;
return status;
}
b_iterator_value b_iterator_get_value(b_iterator *it)
@@ -63,8 +72,17 @@ const b_iterator_value b_iterator_get_cvalue(const b_iterator *it)
b_status b_iterator_erase(b_iterator *it)
{
B_CLASS_DISPATCH_VIRTUAL_0(
b_iterator, B_TYPE_ITERATOR, B_ERR_NOT_SUPPORTED, it_erase, it);
enum b_status status = B_ERR_NOT_SUPPORTED;
b_iterator_class *iface = b_object_get_interface(it, B_TYPE_ITERATOR);
if (iface && iface->it_erase) {
status = iface->it_erase(it);
}
struct b_iterator_p *p = b_object_get_private(it, B_TYPE_ITERATOR);
p->it_status = status;
return status;
}
/*** CLASS DEFINITION *********************************************************/