------------------------->  GNU Sather - sourcefile  <-------------------------
-- Copyright (C) 199x by International Computer Science Institute            --
-- This file is part of the GNU Sather library. It is free software; you may --
-- redistribute  and/or modify it under the terms of the GNU Library General --
-- Public  License (LGPL)  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 Doc/LGPL for more details.       --
-- The license text is also available from:  Free Software Foundation, Inc., --
-- 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA                     --
-------------->  Please email comments to <bug-sather@gnu.org>  <--------------

immutable class THREAD_ID < $IS_LT{THREAD_ID}, $HASH, $NIL, $STR is
   include COMPARABLE;

   nil:SAME is builtin THREAD_ID_NIL; end;
   
   is_nil:BOOL is return self=nil; end;

   me:THREAD_ID is  builtin THREAD_ID_ME; end;

   is_eq(e:THREAD_ID):BOOL is builtin THREAD_ID_IS_EQ; end;

   --is_lt(e:THREAD_ID):BOOL is builtin THREAD_ID_IS_LT; end;
   is_lt(e:THREAD_ID):BOOL is return str.is_lt(e.str); end;

   -- returns a simple, but not very good hash value
   private my_hash:INT is  builtin THREAD_ID_HASH; end;

   hash:INT is return my_hash.hash; end;

   str:STR is     builtin THREAD_ID_STR; end;
end;
