--          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 EXCEPTION_TABLE
   --
   -- Unique Global Object in charge of the exception table of
   -- a method_info as describe in the JVM specification.
   -- Obviously, the same object is recycled.
   --
inherit GLOBALS

creation {CODE_ATTRIBUTE} make

feature {NONE}

   from_pc: FIXED_ARRAY[INTEGER] is
      once
         !!Result.with_capacity(4)
      end

   to_pc: FIXED_ARRAY[INTEGER] is
      once
         !!Result.with_capacity(4)
      end

   handler_pc: FIXED_ARRAY[INTEGER] is
      once
         !!Result.with_capacity(4)
      end

   type_idx: FIXED_ARRAY[INTEGER] is
      once
         !!Result.with_capacity(4)
      end

feature {NONE}

   make is
      do
      end

feature {NONE}

   count: INTEGER is
      do
         Result := from_pc.count
      end

feature {CODE_ATTRIBUTE}

   length: INTEGER is
      do
         Result := 8*count
      end
      
   clear is
      do
         from_pc.clear
         to_pc.clear
         handler_pc.clear
         type_idx.clear
      end

   add(f,t,h,type: INTEGER) is
      do
         from_pc.add_last(f)
         to_pc.add_last(t)
         handler_pc.add_last(h)
         type_idx.add_last(type)
      end

   store_in(storage: STRING) is
      local
         c, i: INTEGER
      do
         c := count
         append_u2(storage,c)
         from
            i := 0
         until
            i >= c
         loop
            append_u2(storage,from_pc.item(i))
            append_u2(storage,to_pc.item(i))
            append_u2(storage,handler_pc.item(i))
            append_u2(storage,type_idx.item(i))
            i := i + 1
         end
      end

end -- EXCEPTION_TABLE

