ocaml/otherlibs/win32unix/winlist.c

/***********************************************************************/
/*                                                                     */
/*                                OCaml                                */
/*                                                                     */
/*  Contributed by Sylvain Le Gall for Lexifi                          */
/*                                                                     */
/*  Copyright 2008 Institut National de Recherche en Informatique et   */
/*  en Automatique.  All rights reserved.  This file is distributed    */
/*  under the terms of the GNU Library General Public License, with    */
/*  the special exception on linking described in file ../../LICENSE.  */
/*                                                                     */
/***********************************************************************/

/* $Id$ */

/* Basic list function in C. */

#include "winlist.h"
#include <windows.h>

void list_init (LPLIST lst)
{
  lst->lpNext = NULL;
}

void list_cleanup (LPLIST lst)
{
  lst->lpNext = NULL;
}

void list_next_set (LPLIST lst, LPLIST next)
{
  lst->lpNext = next;
}

LPLIST list_next (LPLIST lst)
{
  return lst->lpNext;
}

int list_length (LPLIST lst)
{
  int length = 0;
  LPLIST iter = lst;
  while (iter != NULL)
  {
    length++;
    iter = list_next(iter);
  };
  return length;
}

LPLIST list_concat (LPLIST lsta, LPLIST lstb)
{
  LPLIST res = NULL;
  LPLIST iter = NULL;
  LPLIST iterPrev = NULL;

  if (lsta == NULL)
  {
    res = lstb;
  }
  else if (lstb == NULL)
  {
    res = lsta;
  }
  else
  {
    res = lsta;
    iter = lsta;
    while (iter != NULL)
    {
      iterPrev = iter;
      iter = list_next(iter);
    };
    iterPrev->lpNext = lstb;
  };

  return res;
}