--     The Ada Structured Library - A set of container classes and general
--     tools for use with Ada95.
--     Copyright (C) 1998  Corey Minyard (minyard@acm.org)
--
--     This library is free software; you can redistribute it and/or
--     modify it under the terms of the GNU Library General Public
--     License as published by the Free Software Foundation; either
--     version 2 of the License, or (at your option) any later version.
--
--     This library 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
--     Library General Public License for more details.
--
--     You should have received a copy of the GNU Library General Public
--     License along with this library; if not, write to the Free
--     Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
--     MA 02111-1307, USA
--

-- The hash table base.  All hash tables implement the interface defined
-- here.  Actually, there is not much because hash tables only implement
-- the standard functionality defined in Asgc.  The do need a hash
-- function, and the quality of the hash table has a direct correlation
-- with the hash function chosen and the size of the hash table.  Read
-- your data structures book for more info.

generic
   with function Do_Hash (Val : in Contained_Type) return Natural;
package Asgc.Hash is

   ------------------------------------------------------------------------
   -- This is the hash container.
   type Object is abstract new Asgc.Object with private;
   type Object_Class is access all Object'Class;

   function "=" (O1, O2 : in Object) return Boolean is abstract;

   ------------------------------------------------------------------------
   -- An iterator for a hash container.
   type Iterator is abstract new Asgc.Iterator with private;
   type Iterator_Class is access all Iterator'Class;

   function "=" (Iter1, Iter2 : in Iterator) return Boolean is abstract;

   Internal_Hash_Error : exception;

private

   type Object is abstract new Asgc.Object with null record;

   type Iterator is abstract new Asgc.Iterator with null record;

end Asgc.Hash;