--          This file is part of SmallEiffel The GNU Eiffel Compiler.
--          Copyright (C) 1994-98 LORIA - UHP - CRIN - INRIA - FRANCE
--            Dominique COLNET and Suzanne COLLIN - colnet@loria.fr 
--                       http://www.loria.fr/SmallEiffel
-- SmallEiffel 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, or (at your option)  any  later 
-- version. SmallEiffel 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  SmallEiffel;  see the file COPYING.  If not,
-- write to the  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
class TYPE_LIKE_CURRENT
   --
   -- For : like Current
   -- 

inherit TYPE_ANCHORED;
   
creation make, with
   
feature 
   
   run_type: TYPE;

feature 
   
   is_like_current: BOOLEAN is true;
   
   is_like_argument: BOOLEAN is false;

   is_like_feature: BOOLEAN is false;

feature {NONE}
   
   make(sp: like start_position) is
      require
	 sp /= Void
      do
	 start_position := sp;
      ensure      
      	 start_position = sp
      end;
   
   with(model: like Current; rt: TYPE) is
      require
	 model /= Void;
	 rt /= Void
      do
	 start_position := model.start_position;
	 run_type := rt;
      ensure      
	 start_position = model.start_position;
	 run_type = rt
      end;
   
feature

   is_run_type: BOOLEAN is
      do
	 Result := run_type /= Void;
      end;
   
   to_runnable(ct: TYPE): like Current is
      do
	 if run_type = Void then
	    run_type := ct;
	    Result := Current;
	 elseif run_type = ct then
	    Result := Current;
	 else
	    !!Result.with(Current,ct);
	 end;
      end;

   written_mark: STRING is
      do
	 Result := us_like_current;
      end;
   
   is_a(other: TYPE): BOOLEAN is
      do
	 if other.is_like_current then
	    Result := true;
	 else
	    Result := run_type.is_a(other)
	 end;
      end;
   
feature {TYPE}

   short_hook is
      do
	 short_print.hook_or("like","like ");
	 short_print.hook_or(us_current,us_current);
      end;

end -- TYPE_LIKE_CURRENT