--          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.
--
class EXPRESSION_WITH_COMMENT
   --
   -- To wrap an expression with a following comment.
   --

inherit EXPRESSION

creation make

feature

   expression: EXPRESSION

   comment: COMMENT
	 -- the associated one.

   to_integer_or_error: INTEGER is
      do
	 Result := expression.to_integer_or_error
      end

   start_lookup_class: BASE_CLASS is
      do
         Result := expression.start_lookup_class
      end

   is_writable: BOOLEAN is
      do
         Result := expression.is_writable
      end

   is_manifest_string: BOOLEAN is
      do
         Result := expression.is_manifest_string
      end

   is_void: BOOLEAN is
      do
         Result := expression.is_void
      end

   is_result: BOOLEAN is
      do
         Result := expression.is_result
      end

   is_current: BOOLEAN is
      do
         Result := expression.is_current
      end

   assertion_check(tag: CHARACTER) is
      do
         expression.assertion_check(tag)
      end

   is_static: BOOLEAN is
      do
         Result := expression.is_static
      end

   static_value: INTEGER is
      do
         Result := expression.static_value
      end

   is_pre_computable: BOOLEAN is
      do
         Result := expression.is_pre_computable
      end

   isa_dca_inline_argument: INTEGER is
      do
         Result := expression.isa_dca_inline_argument
      end

   dca_inline_argument(formal_arg_type: E_TYPE) is
      do
         expression.dca_inline_argument(formal_arg_type)
      end

   mapping_c_target(target_type: E_TYPE) is
      do
         expression.mapping_c_target(target_type)
      end

   mapping_c_arg(formal_arg_type: E_TYPE) is
      do
         expression.mapping_c_arg(formal_arg_type)
      end

   afd_check is
      do
         expression.afd_check
      end

   safety_check is
      do
         expression.safety_check
      end

   collect_c_tmp is
      do
          expression.collect_c_tmp
      end

   compile_to_c is
      do
         expression.compile_to_c
      end

   c_frame_descriptor(format, locals: STRING) is
      do
	 expression.c_frame_descriptor(format,locals)
      end

   compile_to_jvm is
      do
         expression.compile_to_jvm
      end

   compile_target_to_jvm is
      do
         expression.compile_target_to_jvm
      end

   jvm_branch_if_false: INTEGER is
      do
         Result := expression.jvm_branch_if_false
      end

   jvm_branch_if_true: INTEGER is
      do
         Result := expression.jvm_branch_if_true
      end

   compile_to_jvm_into(dest: E_TYPE): INTEGER is
      do
         Result := expression.compile_to_jvm_into(dest)
      end

   use_current: BOOLEAN is
      do
         Result := expression.use_current
      end

   stupid_switch(run_time_set: RUN_TIME_SET): BOOLEAN is
      do
         Result := expression.stupid_switch(run_time_set)
      end

   c_simple: BOOLEAN is
      do
         Result := expression.c_simple
      end

   can_be_dropped: BOOLEAN is
      do
         Result := expression.can_be_dropped
      end

   to_runnable(ct: E_TYPE): like Current is
      local
         e: EXPRESSION
      do
         e := expression.to_runnable(ct)
         if expression = e then
            Result := Current
         else
            !!Result.make(e,comment)
         end
      end

   start_position: POSITION is
      do
         Result := expression.start_position
      end

   bracketed_pretty_print, pretty_print is
      do
         expression.pretty_print
         comment.pretty_print
      end

   print_as_target is
      do
         expression.print_as_target
      end

   short is
      do
         expression.short
      end

   short_target is
      do
         expression.short_target
      end

   result_type: E_TYPE is
      do
         Result := expression.result_type
      end

   precedence: INTEGER is
      do
         Result := expression.precedence
      end

   jvm_assign_creation is
      do
         expression.jvm_assign_creation
      end

   jvm_assign is
      do
         expression.jvm_assign
      end

feature {NONE}

   make(e: like expression; c: like comment) is
      require
         e /= Void
         really_a_comment: c.count > 0
      do
         expression := e
         comment := c
      ensure
         expression = e
         comment = c
      end

invariant

   comment /= Void

end -- EXPRESSION_WITH_COMMENT

