#ifndef TOOLBOX_LIST_SLL_H
#define TOOLBOX_LIST_SLL_H

#include "toolbox/errcode.h"
#include "toolbox/errno.h"
#include "toolbox/vptr.h"
#include <stddef.h>

struct sll_item {
	void *item;
	const size_t size;
	struct sll_item *next;
};

struct sll {
	size_t size;
	struct sll_item *head;
};

__attribute__((__pure__))
struct sll *
sll_create(void);

RET_TYPE
sll_destroy(struct sll **self);

RET_TYPE
sll_insert(struct sll *restrict self
	   , const void *restrict item, const size_t item_size
	   , const size_t index);

RET_TYPE
sll_append(struct sll *restrict self
	   , const void *restrict item, const size_t item_size);

struct vptr
sll_remove(struct sll *self, const size_t index);

struct vptr
sll_get(struct sll *self, const size_t index);

RET_TYPE
sll_for_each(struct sll *self, RET_TYPE (*for_each)(void *, size_t));

#define sll_size(self)				\
	(self->size)

#define sll_pop(self)				\
	sll_remove(self, ssl_size(self))

#define sll_prepend(self, item, item_size)	\
	sll_insert(self, item, item_size, 0)

#endif