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core: iterator: re-design b_iterator as a b_object interface

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max 🍓
2025-10-29 13:52:09 +00:00
parent 71069a6ebb
commit 009b6c6292
2 changed files with 136 additions and 39 deletions
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69
core/include/blue/core/iterator.h
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@@ -1,26 +1,63 @@
#ifndef BLUELIB_CORE_ITERATOR_H_
#define BLUELIB_CORE_ITERATOR_H_
#ifndef BLUE_CORE_ITERATOR_H_
#define BLUE_CORE_ITERATOR_H_
#include <blue/core/status.h>
#include <blue/core/macros.h>
#include <blue/core/misc.h>
#include <blue/core/status.h>
#include <stdbool.h>
struct b_iterator;
B_DECLS_BEGIN;
typedef struct b_iterator_ops {
b_status (*it_close)(struct b_iterator *);
bool (*it_next)(struct b_iterator *);
b_status (*it_erase)(struct b_iterator *);
bool (*it_is_valid)(const struct b_iterator *);
} b_iterator_ops;
#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)
typedef struct b_iterator {
const b_iterator_ops *it_ops;
} b_iterator;
#define B_ITERATOR_VALUE_INT(v) ((b_iterator_value) {.v_int = (v)})
#define B_ITERATOR_VALUE_PTR(v) ((b_iterator_value) {.v_ptr = (v)})
#define B_ITERATOR_VALUE_CPTR(v) ((const b_iterator_value) {.v_cptr = (v)})
#define B_ITERATOR_VALUE_NULL ((b_iterator_value) {})
#define B_ITERATOR_VALUE_IS_NULL(v) ((v)->v_ptr == NULL)
BLUE_API b_status b_iterator_close(b_iterator *it);
BLUE_API bool b_iterator_next(b_iterator *it);
#define B_TYPE_ITERATOR (b_iterator_get_type())
#define B_TYPE_ITERABLE (b_iterable_get_type())
typedef union b_iterator_value {
uintptr_t v_int;
void *v_ptr;
const void *v_cptr;
} b_iterator_value;
B_DECLARE_TYPE(b_iterator);
B_DECLARE_TYPE(b_iterable);
B_TYPE_CLASS_DECLARATION_BEGIN(b_iterator)
b_status (*it_move_next)(const b_iterator *);
b_status (*it_erase)(b_iterator *);
b_iterator_value (*it_get_value)(b_iterator *);
const b_iterator_value (*it_get_cvalue)(const b_iterator *);
B_TYPE_CLASS_DECLARATION_END(b_iterator)
B_TYPE_CLASS_DECLARATION_BEGIN(b_iterable)
b_iterator *(*it_begin)(b_iterable *);
const b_iterator *(*it_cbegin)(const b_iterable *);
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);
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_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);
BLUE_API bool b_iterator_is_valid(const b_iterator *it);
BLUE_API b_status b_iterator_is_valid(const b_iterator *it);
B_DECLS_END;
#endif

106
core/iterator.c
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@@ -1,37 +1,97 @@
#include <blue/core/iterator.h>
b_status b_iterator_cleanup(struct b_iterator *it)
{
if (it->it_ops && it->it_ops->it_close) {
return it->it_ops->it_close(it);
}
/*** PRIVATE DATA *************************************************************/
struct b_iterator_p {
enum b_status it_status;
};
/*** PRIVATE FUNCTIONS ********************************************************/
static enum b_status iterator_get_status(const struct b_iterator_p *it)
{
return it->it_status;
}
static enum b_status iterator_set_status(struct b_iterator_p *it, b_status status)
{
it->it_status = status;
return B_SUCCESS;
}
bool b_iterator_next(struct b_iterator *it)
{
if (it->it_ops && it->it_ops->it_next) {
return it->it_ops->it_next(it);
}
/*** PUBLIC FUNCTIONS *********************************************************/
return false;
b_iterator *b_iterator_begin(b_iterable *it)
{
B_CLASS_DISPATCH_VIRTUAL_0(b_iterable, B_TYPE_ITERABLE, NULL, it_begin, it);
}
b_status b_iterator_erase(struct b_iterator *it)
const b_iterator *b_iterator_cbegin(const b_iterable *it)
{
if (it->it_ops && it->it_ops->it_erase) {
return it->it_ops->it_erase(it);
}
return B_ERR_NOT_SUPPORTED;
B_CLASS_DISPATCH_VIRTUAL_0(b_iterable, B_TYPE_ITERABLE, NULL, it_cbegin, it);
}
bool b_iterator_is_valid(const struct b_iterator *it)
enum b_status b_iterator_get_status(const b_iterator *it)
{
if (it->it_ops && it->it_ops->it_is_valid) {
return it->it_ops->it_is_valid(it);
}
return false;
B_CLASS_DISPATCH_STATIC_0(B_TYPE_ITERATOR, iterator_get_status, it);
}
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)
{
B_CLASS_DISPATCH_VIRTUAL_0(
b_iterator, B_TYPE_ITERATOR, B_ERR_NOT_SUPPORTED, it_move_next, it);
}
b_iterator_value b_iterator_get_value(b_iterator *it)
{
B_CLASS_DISPATCH_VIRTUAL_0(
b_iterator, B_TYPE_ITERATOR, B_ITERATOR_VALUE_NULL,
it_get_value, it);
}
const b_iterator_value b_iterator_get_cvalue(const b_iterator *it)
{
B_CLASS_DISPATCH_VIRTUAL_0(
b_iterator, B_TYPE_ITERATOR, B_ITERATOR_VALUE_NULL,
it_get_cvalue, 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);
}
/*** CLASS DEFINITION *********************************************************/
// ---- b_iterator DEFINITION
B_TYPE_CLASS_DEFINITION_BEGIN(b_iterator)
B_TYPE_CLASS_INTERFACE_BEGIN(b_object, B_TYPE_OBJECT)
B_INTERFACE_ENTRY(to_string) = NULL;
B_TYPE_CLASS_INTERFACE_END(b_object, B_TYPE_OBJECT)
B_TYPE_CLASS_DEFINITION_END(b_iterator)
B_TYPE_DEFINITION_BEGIN(b_iterator)
B_TYPE_FLAGS(B_TYPE_F_ABSTRACT);
B_TYPE_ID(0xfd40b67f, 0x7087, 0x40a9, 0x8fd8, 0x8ae27bd58c9e);
B_TYPE_CLASS(b_iterator_class);
B_TYPE_INSTANCE_PRIVATE(struct b_iterator_p);
B_TYPE_DEFINITION_END(b_iterator)
// ---- b_iterable DEFINITION
B_TYPE_CLASS_DEFINITION_BEGIN(b_iterable)
B_TYPE_CLASS_INTERFACE_BEGIN(b_object, B_TYPE_OBJECT)
B_INTERFACE_ENTRY(to_string) = NULL;
B_TYPE_CLASS_INTERFACE_END(b_object, B_TYPE_OBJECT)
B_TYPE_CLASS_DEFINITION_END(b_iterable)
B_TYPE_DEFINITION_BEGIN(b_iterable)
B_TYPE_FLAGS(B_TYPE_F_ABSTRACT);
B_TYPE_ID(0x4bbabf2d, 0xfc5d, 0x40cc, 0x89fc, 0x164085e47f73);
B_TYPE_CLASS(b_iterable_class);
B_TYPE_DEFINITION_END(b_iterable)