--          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.
--
deferred class CST_ATT
--
-- For all ConSTant Attributes.
--   

inherit ATTRIBUTE;
   
feature {ANY}

   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: 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 {C_PRETTY_PRINTER}

   frozen stupid_switch(sta_rf: RUN_FEATURE; r: ARRAY[RUN_CLASS]): BOOLEAN is
      do
	 Result := true;
      end;

feature {NONE}
   
   pretty_tail is
      do
	 fmt.put_string(" is ");
	 value(1).pretty_print;
      end;

end -- CST_ATT