------------------------------------------------------------------------------
--                                                                          --
--                           POLYORB COMPONENTS                             --
--                                                                          --
--                POLYORB.GIOP_P.TAGGED_COMPONENTS.NULL_TAG                 --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--         Copyright (C) 2005-2008, Free Software Foundation, Inc.          --
--                                                                          --
-- PolyORB is free software; you  can  redistribute  it and/or modify it    --
-- under terms of the  GNU General Public License as published by the  Free --
-- Software Foundation;  either version 2,  or (at your option)  any  later --
-- version. PolyORB is distributed  in the hope that it will be  useful,    --
-- but WITHOUT ANY WARRANTY;  without even the implied warranty of MERCHAN- --
-- TABILITY 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 distributed with PolyORB; see file COPYING. If    --
-- not, write to the Free Software Foundation, 51 Franklin Street, Fifth    --
-- Floor, Boston, MA 02111-1301, USA.                                       --
--                                                                          --
--                                                                          --
--                  PolyORB is maintained by AdaCore                        --
--                     (email: sales@adacore.com)                           --
--                                                                          --
------------------------------------------------------------------------------

with PolyORB.Binding_Data.GIOP;
with PolyORB.GIOP_P.Tagged_Components.CSI_Sec_Mech_List;
with PolyORB.GIOP_P.Transport_Mechanisms;
with PolyORB.Initialization;
with PolyORB.Representations.CDR.Common;
with PolyORB.Security.Transport_Mechanisms.Unprotected;
with PolyORB.Utils.Strings;

package body PolyORB.GIOP_P.Tagged_Components.Null_Tag is

   use PolyORB.Representations.CDR.Common;
   use PolyORB.GIOP_P.Transport_Mechanisms;

   function Create_Empty_Component return Tagged_Component_Access;

   procedure Initialize;

   function To_Tagged_Component
     (TM : PolyORB.Security.Transport_Mechanisms.
       Target_Transport_Mechanism_Access)
     return Tagged_Component_Access;

   function To_Security_Transport_Mechanism
     (TC : access Tagged_Component'Class)
      return
       PolyORB.Security.Transport_Mechanisms.Client_Transport_Mechanism_Access;

   procedure Create_GIOP_Transport_Mechanisms
     (TC      : PolyORB.GIOP_P.Tagged_Components.Tagged_Component_Access;
      Profile : PolyORB.Binding_Data.Profile_Access;
      Mechs   : in out Transport_Mechanism_List);

   ----------------------------
   -- Create_Empty_Component --
   ----------------------------

   function Create_Empty_Component return Tagged_Component_Access is
   begin
      return new TC_Null_Tag;
   end Create_Empty_Component;

   --------------------------------------
   -- Create_GIOP_Transport_Mechanisms --
   --------------------------------------

   procedure Create_GIOP_Transport_Mechanisms
     (TC      : PolyORB.GIOP_P.Tagged_Components.Tagged_Component_Access;
      Profile : PolyORB.Binding_Data.Profile_Access;
      Mechs   : in out Transport_Mechanism_List)
   is
      pragma Unreferenced (TC);
      use PolyORB.Binding_Data.GIOP;
   begin
      Append (Mechs,
        Get_Primary_Transport_Mechanism (GIOP_Profile_Type (Profile.all)));
   end Create_GIOP_Transport_Mechanisms;

   ---------------
   -- Duplicate --
   ---------------

   function Duplicate (C : TC_Null_Tag) return Tagged_Component_Access is
      pragma Unreferenced (C);

   begin
      return new TC_Null_Tag;
   end Duplicate;

   ----------------
   -- Initialize --
   ----------------

   procedure Initialize is
   begin
      --  Register Tagged Component

      Register (Tag_NULL_Tag, Create_Empty_Component'Access, null);

      --  Register Tagged Component => GIOP Transport Mechanisms convertor

      PolyORB.GIOP_P.Transport_Mechanisms.Register
        (Tag_NULL_Tag, Create_GIOP_Transport_Mechanisms'Access);

      --  Register Tagged Component <=> Secure Transport Mechanism convertor

      PolyORB.GIOP_P.Tagged_Components.CSI_Sec_Mech_List.Register
        (Tag_NULL_Tag,
         To_Tagged_Component'Access,
         To_Security_Transport_Mechanism'Access);
   end Initialize;

   -----------------------------
   -- Marshall_Component_Data --
   -----------------------------

   procedure Marshall_Component_Data
     (C      : access TC_Null_Tag;
      Buffer : access Buffer_Type)
   is
      pragma Unreferenced (C);

   begin
      Marshall (Buffer, Types.Unsigned_Long (0));
   end Marshall_Component_Data;

   ----------------------
   -- Release_Contents --
   ----------------------

   procedure Release_Contents (C : access TC_Null_Tag) is
      pragma Unreferenced (C);
   begin
      null;
   end Release_Contents;

   -------------------------------------
   -- To_Security_Transport_Mechanism --
   -------------------------------------

   function To_Security_Transport_Mechanism
     (TC : access Tagged_Component'Class)
      return
       PolyORB.Security.Transport_Mechanisms.Client_Transport_Mechanism_Access
   is
      pragma Unreferenced (TC);

      package PSTMU
        renames PolyORB.Security.Transport_Mechanisms.Unprotected;

   begin
      return new PSTMU.Unprotected_Transport_Mechanism;
   end To_Security_Transport_Mechanism;

   -------------------------
   -- To_Tagged_Component --
   -------------------------

   function To_Tagged_Component
     (TM : PolyORB.Security.Transport_Mechanisms.
       Target_Transport_Mechanism_Access)
     return Tagged_Component_Access
   is
      pragma Unreferenced (TM);

   begin
      return null;
   end To_Tagged_Component;

   -------------------------------
   -- Unmarshall_Component_Data --
   -------------------------------

   procedure Unmarshall_Component_Data
     (C      : access TC_Null_Tag;
      Buffer : access Buffer_Type;
      Error  : out PolyORB.Errors.Error_Container)
   is
      pragma Unreferenced (C);
      pragma Unreferenced (Error);

      use PolyORB.Types;

      Aux : constant Unsigned_Long := Unmarshall (Buffer);

   begin
      pragma Assert (Aux = 0);

      null;
   end Unmarshall_Component_Data;

begin
   declare
      use PolyORB.Initialization;
      use PolyORB.Utils.Strings;

   begin
      Register_Module
        (Module_Info'
         (Name      => +"tagged_components.null_tag",
          Conflicts => PolyORB.Initialization.String_Lists.Empty,
          Depends   => PolyORB.Initialization.String_Lists.Empty,
          Provides  => PolyORB.Initialization.String_Lists.Empty,
          Implicit  => False,
          Init      => Initialize'Access,
          Shutdown  => null));
   end;
end PolyORB.GIOP_P.Tagged_Components.Null_Tag;
