------------------------------------------------------------------------------
--                                                                          --
--                           POLYORB COMPONENTS                             --
--                                                                          --
--                      S O A P . P A R A M E T E R S                       --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--         Copyright (C) 2000-2006, 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 SOAP.Types;

package SOAP.Parameters is

   Max_Parameters : constant := 50;
   --  This is the maximum number of parameters supported by this
   --  implementation.

   type List is private;

   function Argument_Count (P : List) return Natural;
   --  Returns the number of parameters in P.

   function Argument (P : List; Name : String) return Types.Object'Class;
   --  Returns parameters named Name in P. Raises Types.Data_Error if not
   --  found.

   function Argument (P : List; N : Positive) return Types.Object'Class;
   --  Returns Nth parameters in P. Raises Types.Data_Error if not found.

   function Exist (P : List; Name : String) return Boolean;
   --  Returns True if parameter named Name exist in P and False otherwise.

   function Get (P : List; Name : String) return Integer;
   --  Returns parameter named Name in P as an Integer value. Raises
   --  Types.Data_Error if this parameter does not exist or is not an Integer.

   function Get (P : List; Name : String) return Long_Float;
   --  Returns parameter named Name in P as a Float value. Raises
   --  Types.Data_Error if this parameter does not exist or is not a Float.

   function Get (P : List; Name : String) return String;
   --  Returns parameter named Name in P as a String value. Raises
   --  Types.Data_Error if this parameter does not exist or is not a String.

   function Get (P : List; Name : String) return Boolean;
   --  Returns parameter named Name in P as a Boolean value. Raises
   --  Types.Data_Error if this parameter does not exist or is not a Boolean.

   function Get (P : List; Name : String) return Types.SOAP_Base64;
   --  Returns parameter named Name in P as a SOAP Base64 value. Raises
   --  Types.Data_Error if this parameter does not exist or is not a SOAP
   --  Base64.

   function Get (P : List; Name : String) return Types.SOAP_Record;
   --  Returns parameter named Name in P as a SOAP Struct value. Raises
   --  Types.Data_Error if this parameter does not exist or is not a SOAP
   --  Struct.

   function Get (P : List; Name : String) return Types.SOAP_Array;
   --  Returns parameter named Name in P as a SOAP Array value. Raises
   --  Types.Data_Error if this parameter does not exist or is not a SOAP
   --  Array.

   ------------------
   -- Constructors --
   ------------------

   function "&" (P : List; O : Types.Object'Class) return List;
   function "+" (O : Types.Object'Class) return List;

   ----------------
   -- Validation --
   ----------------

   procedure Check (P : List; N : Natural);
   --  Checks that there is exactly N parameters or raise Types.Data_Error.

   procedure Check_Integer (P : List; Name : String);
   --  Checks that parameter named Name exist and is an Integer value.

   procedure Check_Float (P : List; Name : String);
   --  Checks that parameter named Name exist and is a Float value.

   procedure Check_Boolean (P : List; Name : String);
   --  Checks that parameter named Name exist and is a Boolean value.

--   procedure Check_Time_Instant (P : List; Name : String);
   --  Checks that parameter named Name exist and is a Time_Instant value.

   procedure Check_Base64 (P : List; Name : String);
   --  Checks that parameter named Name exist and is a Base64 value.

   procedure Check_Null (P : List; Name : String);
   --  Checks that parameter named Name exist and is a Null value.

   procedure Check_Record (P : List; Name : String);
   --  Checks that parameter named Name exist and is a Record value.

   procedure Check_Array (P : List; Name : String);
   --  Checks that parameter named Name exist and is an Array value.

private

   pragma Inline (Get);

   type List is record
      V : Types.Object_Set (1 .. Max_Parameters);
      N : Natural := 0;
   end record;

end SOAP.Parameters;
