------------------------------------------------------
--------------------------
------------------------------------------------------------------------------
-- Cheddar is a GNU GPL real time scheduling analysis tool.
-- This program provides services to automatically check performances
-- of real time architectures.
--
-- Copyright (C) 2002-2010,  by Frank Singhoff, Alain Plantec, Jerome Legrand
--
-- The Cheddar project was started in 2002 by
-- the LISyC Team, University of Western Britanny.
--
-- Since 2008, Ellidiss technologies also contributes to the development of
-- Cheddar and provides industrial support.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
--
--
-- Contact : cheddar@listes.univ-brest.fr
--
-----------------------------------------------------------------------------
-- Last update :
--    $Rev: 523 $
--    $Date: 2012-09-26 14:09:39 +0100 (Wed, 26 Sep 2012) $
--    $Author: fotsing $
------------------------------------------------------------------------------
------------------------------------------------------------------------------
with Text_IO; use Text_IO;

package body hashs is

   procedure put (h : in hash) is

      current : link;

   begin
      for i in hash'Range loop
         current := h (i);
         while current /= null loop
            Put ("Index = " & To_String (current.index));
            Put ("   Data = ");
            put (current.a_data);
            New_Line;
            New_Line;

            current := current.next;
         end loop;
      end loop;
   end put;

   procedure initialize (h : in out hash) is
   begin
      for i in hash'Range loop
         h (i) := null;
      end loop;
   end initialize;

   procedure add
     (h     : in out hash;
      index : in Unbounded_String;
      d     : in data_type)
   is

      item : constant Natural := compute_hash (index);
      c    : link;

   begin
      if h (item) /= null then
         c             := new cell;
         c.a_data      := d;
         c.index       := index;
         c.next        := h (item).next;
         h (item).next := c;
      else
         h (item)        := new cell;
         h (item).a_data := d;
         h (item).index  := index;
      end if;
   end add;

   function consult
     (h     : in hash;
      index : in Unbounded_String)
      return  data_type
   is
      item    : constant Natural := compute_hash (index);
      current : link             := h (item);

   begin

      while current /= null loop
         if current.index = index then
            return current.a_data;
         end if;
         current := current.next;
      end loop;

      raise data_not_found;

   end consult;

end hashs;