/* This software is licensed by the MIT License, see LICENSE file */
/*                                Copyright © 2022 Gregory Lirent */

#include "../../include/list.h"
#include "../__internal/vnode.h"

#ifndef LIBCDSB_SRC_LIST_INCLUDE_H
#define LIBCDSB_SRC_LIST_INCLUDE_H

typedef enum libcdsb_list_direction {
    LD_PREV = 1,
    LD_NEXT = 2
} ldir_t;

typedef struct libcdsb_list_node {
    struct libcdsb_list_node* prev;
    struct libcdsb_list_node* next;

    vnode_t node;
    vtype   type;
} lnode_t;


ainline(void libcdsb_builtin_init(list_t* x, vnode_t v, vtype t)) {
    lnode_t* node = malloc(sizeof(*node));

    node->next = nullptr;
    node->prev = nullptr;
    node->node = v;
    node->type = t;

    x->first = node;
    x->last  = node;
}

ainline(void libcdsb_builtin_push(list_t* x, vnode_t v, vtype t)) {
    lnode_t* node = malloc(sizeof(*node));

    node->next = nullptr;
    node->prev = x->last;
    node->node = v;
    node->type = t;

    x->last->next = node;
    x->last       = node;
}

#define ldir_dir(cur, d) (&((cur)->prev))[(d)>>1]
#define ldir_inv(cur, d) (&((cur)->prev))[(d)&1]

#define lnode_compare(s0, s1) vnode_compare(&(s0)->node, (s0)->type, &(s1)->node, (s1)->type)

#endif /* LIBCDSB_SRC_LIST_INCLUDE_H */