--          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://SmallEiffel.loria.fr
-- 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 NATIVE
   --
   -- An external language clause definition.
   --

inherit GLOBALS;

feature

   external_tag: STRING;
         -- The keyword associated with the external keyword.

   frozen pretty_print is
      do
         fmt.put_character('%"');
         fmt.put_string(external_tag);
         -- *** MUST BE UPDATED for C++ EXTERNALS ***
         fmt.put_character('%"');
      end;

   use_current(er: EXTERNAL_ROUTINE): BOOLEAN is
      require
         er /= Void;
      deferred
      end;

   stupid_switch_function(r: ARRAY[RUN_CLASS]; name: STRING): BOOLEAN is
      require
         not r.is_empty
      deferred
      end;

   stupid_switch_procedure(r: ARRAY[RUN_CLASS]; name: STRING): BOOLEAN is
      require
         not r.is_empty
      deferred
      end;

   c_define_function(rf8: RUN_FEATURE_8; bcn, name: STRING) is
         -- Produce C to define `rf8'.
      require
         rf8.base_feature.first_name.to_string = name;
         rf8.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   c_mapping_function(rf8: RUN_FEATURE_8; bcn, name: STRING) is
         -- Produce C to use `rf8'.
      require
         rf8.base_feature.first_name.to_string = name;
         rf8.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   c_define_procedure(rf7: RUN_FEATURE_7; bcn, name: STRING) is
         -- Produce C to define `rf7'.
      require
         rf7.base_feature.first_name.to_string = name;
         rf7.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   c_mapping_procedure(rf7: RUN_FEATURE_7; bcn, name: STRING) is
         -- Produce C to use `rf7'.
      require
         rf7.base_feature.first_name.to_string = name;
         rf7.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   jvm_add_method_for_function(rf8: RUN_FEATURE_8; bcn, name: STRING) is
      require
         rf8.base_feature.first_name.to_string = name;
         rf8.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   jvm_define_function(rf8: RUN_FEATURE_8; bcn, name: STRING) is
         -- Produce Java byte code to define `rf8'.
      require
         rf8.base_feature.first_name.to_string = name;
         rf8.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   jvm_mapping_function(rf8: RUN_FEATURE_8; bcn, name: STRING) is
         -- Produce Java byte code to use `rf8'.
      require
         rf8.base_feature.first_name.to_string = name;
         rf8.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   jvm_add_method_for_procedure(rf7: RUN_FEATURE_7; bcn, name: STRING) is
      require
         rf7.base_feature.first_name.to_string = name;
         rf7.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   jvm_define_procedure(rf7: RUN_FEATURE_7; bcn, name: STRING) is
         -- Produce Java byte code to define `rf7'.
      require
         rf7.base_feature.first_name.to_string = name;
         rf7.base_feature.base_class.name.to_string = bcn
      deferred
      end;

   jvm_mapping_procedure(rf7: RUN_FEATURE_7; bcn, name: STRING) is
         -- Produce Java byte code to use `rf7'.
      require
         rf7.base_feature.first_name.to_string = name;
         rf7.base_feature.base_class.name.to_string = bcn
      deferred
      end;

feature {NONE}

   fe_c2jvm(rf: RUN_FEATURE) is
      do
         eh.add_position(jvm.target_position);
         eh.add_position(rf.start_position);
         fatal_error("Command 'compile_to_jvm' cannot compile this code.");
      end;

   fe_c2c(rf: RUN_FEATURE) is
      do
         eh.add_position(rf.start_position);
         fatal_error("Command 'compile_to_c' cannot compile this code.");
      end;

   make(ln: STRING) is
      require
         ln /= Void
      do
         external_tag := ln;
      ensure
         external_tag = ln
      end;

   body: STRING is
      once
         !!Result.make(1024);
      end;

end -- NATIVE