--          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 BASE_TYPE_CONSTANT
   --
   -- Root of : BOOLEAN_CONSTANT, CHARACTER_CONSTANT, INTEGER_CONSTANT
   --           and REAL_CONSTANT.
   --   

inherit EXPRESSION;
      
feature
   
   start_position: POSITION;
   
feature

   is_writable: BOOLEAN is false;

   is_current: BOOLEAN is false;

   is_manifest_string: BOOLEAN is false;

   is_result: BOOLEAN is false;

   is_void: BOOLEAN is false;

   use_current: BOOLEAN is false;
   
   can_be_dropped: BOOLEAN is true;
   
feature

   frozen afd_check is 
      do 
      end;

   frozen is_pre_computable: BOOLEAN is
      do
	 Result := is_static;
      end;

   frozen c_declare_for_old is 
      do 
      end;

   frozen compile_to_c_old is 
      do 
      end;

   frozen collect_c_tmp is
      do
      end;

   frozen compile_to_jvm_old is 
      do 
      end;

   frozen to_runnable(ct: TYPE): like Current is
      do
	 Result := Current;
      end;
   
   isa_dca_inline_argument: INTEGER is
      do
	 if is_static then
	    Result := -1;
	 end;
      end;

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

   frozen mapping_c_arg(formal_arg_type: TYPE) is
      do
	 if formal_arg_type.is_reference then
	    -- Expanded into Reference :
	    result_type.to_reference;
	    cpp.put_character('(');
	    compile_to_c;
	    cpp.put_character(')');
	 else
	    -- Expanded into Expanded :
	    compile_to_c;
	 end;
      end;

feature {NONE}

   to_string: STRING is
      deferred 
      end;

feature

   frozen bracketed_pretty_print, frozen pretty_print is
      do
	 fmt.put_string(to_string);
      end;
   
   frozen print_as_target is
      do
	 fmt.put_character('(');
	 pretty_print;
	 fmt.put_character(')');
	 fmt.put_character('.');
      end;

   frozen short is
      do
	 short_print.a_base_type_constant(to_string);
      end;

   frozen short_target is
      do
	 bracketed_short;
	 short_print.a_dot;
      end;

   frozen precedence: INTEGER is
      do
	 Result := atomic_precedence;
      end;
   
   frozen base_class_name: CLASS_NAME is
      do
	 Result := result_type.base_class_name;
      end;
   
   frozen compile_to_jvm_assignment(a: ASSIGNMENT) is
      do
      end;
   
   frozen jvm_assign is
      do
      end;

feature {BASE_TYPE_CONSTANT}
   
   frozen set_current_type(ct: TYPE) is
      do
	 current_type := ct;
      ensure 
	 current_type = ct;
      end;
   
end -- BASE_TYPE_CONSTANT