--          This file is part of SmartEiffel The GNU Eiffel Compiler.
--       Copyright (C) 1994-2002 LORIA - INRIA - U.H.P. Nancy 1 - FRANCE
--          Dominique COLNET and Suzanne COLLIN - SmartEiffel@loria.fr
--                       http://SmartEiffel.loria.fr
-- SmartEiffel 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. SmartEiffel 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  SmartEiffel;  see the file COPYING.  If not,
-- write to the  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
deferred class CST_ATT
   --
   -- For all ConSTant Attributes.
   --

inherit ATTRIBUTE

feature

   value(i: INTEGER): EXPRESSION is
         -- Result will be redefine as: REAL_CONSTANT, INTEGER_CONSTANT,
         -- CHARACTER_CONSTANT, BOOLEAN_CONSTANT or MANIFEST_STRING.
      require
         1 <= i
         i <= names.count
      deferred
      ensure
         Result /= Void
      end

   to_run_feature(ct: E_TYPE; fn: FEATURE_NAME): RUN_FEATURE_1 is
      local
         rc: RUN_CLASS
      do
         rc := ct.run_class
         Result ?= rc.at(fn)
         if Result = Void then
            !!Result.make(ct,fn,Current)
         end
      end

feature {NONE}

   frozen pretty_constant_value is
      do
         pretty_printer.put_string(once " is ")
	 pretty_constant_value_
      end

   pretty_constant_value_ is
      deferred
      end

end -- CST_ATT