/*
 * Copyright 2011 Tom Stellard <tstellar@gmail.com>
 * SPDX-License-Identifier: MIT
 */

#include "radeon_list.h"

#include <stdio.h>
#include <stdlib.h>

#include "memory_pool.h"

struct rc_list *
rc_list(struct memory_pool *pool, void *item)
{
   struct rc_list *new = memory_pool_malloc(pool, sizeof(struct rc_list));
   new->Item = item;
   new->Next = NULL;
   new->Prev = NULL;

   return new;
}

void
rc_list_add(struct rc_list **list, struct rc_list *new_value)
{
   struct rc_list *temp;

   if (*list == NULL) {
      *list = new_value;
      return;
   }

   for (temp = *list; temp->Next; temp = temp->Next)
      ;

   temp->Next = new_value;
   new_value->Prev = temp;
}

void
rc_list_remove(struct rc_list **list, struct rc_list *rm_value)
{
   if (*list == rm_value) {
      *list = rm_value->Next;
      return;
   }

   rm_value->Prev->Next = rm_value->Next;
   if (rm_value->Next) {
      rm_value->Next->Prev = rm_value->Prev;
   }
}

unsigned int
rc_list_count(struct rc_list *list)
{
   unsigned int count = 0;
   while (list) {
      count++;
      list = list->Next;
   }
   return count;
}

void
rc_list_print(struct rc_list *list)
{
   while (list) {
      fprintf(stderr, "%p->", list->Item);
      list = list->Next;
   }
   fprintf(stderr, "\n");
}