--          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 ADDRESS_OF
   --
   -- For the special address form notation : $ feature_name
   -- 

inherit EXPRESSION;
   
creation make
   
feature 
   
   feature_name: FEATURE_NAME;
   
feature {NONE}
   
   rf: RUN_FEATURE;
	 -- Corresponding one when runnable.
   
feature 
   
   is_static: BOOLEAN is false;
   
   is_pre_computable: BOOLEAN is false;

   isa_dca_inline_argument: INTEGER is 0;

   use_current: BOOLEAN is false;
   
feature 
   
   make(fn: like feature_name) is
      require
	 fn /= Void
      do
	 feature_name := fn;
      ensure
	 feature_name = fn;
      end;
   
feature 
   
   dca_inline_argument(formal_arg_type: TYPE) is
      do
      end;

   result_type: TYPE_POINTER is
      do
	 Result := type_pointer;
      end;
      
   afd_check is do end;

   compile_target_to_jvm, compile_to_jvm is
      do
	 eh.add_position(start_position);
	 fatal_error(fz_jvm_error);
      end;
   
   jvm_branch_if_false: INTEGER is
      do
      end;

   jvm_branch_if_true: INTEGER is
      do
      end;
   
   compile_to_jvm_into(dest: TYPE): INTEGER is
      do
      end;
   
   compile_to_jvm_assignment(a: ASSIGNMENT) is
      do
      end;
   
   compile_to_c is
      do
	 cpp.put_string("((void *)");
	 rf.address_of; 
	 cpp.put_character(')');
      end;
   
   frozen mapping_c_target(target_type: TYPE) is
      do
	 compile_to_c;
      end;

   frozen mapping_c_arg(formal_arg_type: TYPE) is
      do
	 compile_to_c;
      end;

   compile_to_c_old is do end;
  
   compile_to_jvm_old is do end;
  
   can_be_dropped, c_simple: BOOLEAN is true;

   to_runnable(ct: TYPE): like Current is
      do
	 if current_type = Void then
	    current_type := ct;
	    rf := ct.run_class.get_rf_with(feature_name);
	    if rf = Void then
	       error(start_position,"Feature not found.");
	    end;
	    Result := Current;
	 else
	    !!Result.make(feature_name);
	    Result := Result.to_runnable(ct);
	 end;
      end;
   
   precedence: INTEGER is
      do
	 Result := atomic_precedence;
      end;
   
   start_position: POSITION is
      do
	 Result := feature_name.start_position;
      end;
   
   pretty_print is
      do
	 fmt.put_character('%D');
	 feature_name.pretty_print;
      end;
   
   print_as_target is
      do
	 error(start_position,"ADDRESS_OF/does_not_understand");
      end;
   
   bracketed_pretty_print is
      do
	 fmt.put_character('(');
	 pretty_print;
	 fmt.put_character(')');
      end;

   short is
      do
	 short_print.a_character('%D');
	 feature_name.short;
      end;
   
   short_target is
      do
	 bracketed_short;
	 short_print.a_dot;
      end;
   
feature {CREATION_CALL,EXPRESSION_WITH_COMMENT}
      
   jvm_assign is
      do
      end;

invariant
   
   feature_name /= Void
   
end --  ADDRESS_OF