--          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 CHARACTER_CONSTANT
--
-- For Manifest Constant CHARACTER.
--

inherit BASE_TYPE_CONSTANT

creation make

feature

   value: CHARACTER

   pretty_print_mode: INTEGER

   std_pretty_print: INTEGER is 0

   percent_pretty_print: INTEGER is 1

   ascii_pretty_print: INTEGER is 2

   c_simple: BOOLEAN is true

   is_static: BOOLEAN is true

   static_value, to_integer_or_error: INTEGER is
      do
         Result := value.code
      end

   compile_to_c is
      do
         cpp.put_string(once "((T3)%'")
         if value.is_letter or else value.is_digit then
            cpp.put_character(value)
         elseif value = '%N' then
            cpp.put_character('\')
            cpp.put_character('n')
         else
            cpp.put_character('\')
            cpp.put_integer(value.code.to_octal)
         end
         cpp.put_string(once "%')")
      end

   compile_to_jvm, compile_target_to_jvm is
      do
         code_attribute.opcode_push_integer(value.code)
      end

   jvm_branch_if_false: INTEGER is
      do
      end

   jvm_branch_if_true: INTEGER is
      do
      end

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

   set_pretty_print_mode(pm: like pretty_print_mode) is
      require
         pm = std_pretty_print or else
         pm = percent_pretty_print or else
         pm = ascii_pretty_print
      do
         pretty_print_mode := pm
      ensure
         pretty_print_mode = pm
      end

   to_string: STRING is
      do
         !!Result.make(0)
         Result.extend('%'')
         inspect
            pretty_print_mode
         when std_pretty_print then
            Result.extend(value)
         when percent_pretty_print then
            character_coding(value,Result)
         when ascii_pretty_print then
            Result.extend('%%')
            Result.extend('/')
            value.code.append_in(Result)
            Result.extend('/')
         end
         Result.extend('%'')
      end

   result_type: TYPE_CHARACTER is
      local
         unknown_position: POSITION
      once
         create Result.make(unknown_position)
      end

feature {NONE}

   make(sp: like start_position; v: like value
        pm: like pretty_print_mode) is
      require
         not sp.is_unknown
      do
         start_position := sp
         value := v
         set_pretty_print_mode(pm)
      ensure
         start_position = sp
         value = v
         pretty_print_mode = pm
      end

end -- CHARACTER_CONSTANT

