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/usr/share/ada/adainclude/aws/soap-wsdl-parameters.adb is in libaws3.3.2.2-dev 17.2.2017-2.

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The actual contents of the file can be viewed below.

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------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                     Copyright (C) 2003-2017, AdaCore                     --
--                                                                          --
--  This library 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 3,  or (at your  option) any --
--  later version. This library 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.                    --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--  You should have received a copy of the GNU General Public License and   --
--  a copy of the GCC Runtime Library Exception along with this program;    --
--  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see   --
--  <http://www.gnu.org/licenses/>.                                         --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
------------------------------------------------------------------------------

with Ada.Text_IO;
with Ada.Unchecked_Deallocation;

with AWS.Utils;

package body SOAP.WSDL.Parameters is

   ------------
   -- Append --
   ------------

   procedure Append (P : in out P_Set; Param : Parameter) is
      N : P_Set;
   begin
      if P = null then
         P := new Parameter'(Param);

      else
         N := P;

         while N.Next /= null loop
            N := N.Next;
         end loop;

         N.Next := new Parameter'(Param);
      end if;
   end Append;

   ---------------
   -- From_SOAP --
   ---------------

   function From_SOAP
     (P            : Parameter;
      Object       : String;
      Type_Name    : String := "";
      Is_SOAP_Type : Boolean := False) return String
   is
      Def : constant WSDL.Types.Definition :=  WSDL.Types.Find (P.Typ);
   begin
      return WSDL.Types.From_SOAP
        (Def, Object, Type_Name, Is_SOAP_Type, Is_Uniq (P));
   end From_SOAP;

   -------------
   -- Is_Uniq --
   -------------

   function Is_Uniq (P : Parameter) return Boolean is
   begin
      return P.Min = 1 and then P.Max = 1;
   end Is_Uniq;

   ------------
   -- Length --
   ------------

   function Length (P : access Parameter) return Natural is
      N      : access Parameter := P;
      Result : Natural := 0;
   begin
      while N /= null loop
         Result := Result + 1;
         N := N.Next;
      end loop;
      return Result;
   end Length;

   ------------
   -- Output --
   ------------

   procedure Output (P : access Parameter) is

      use Ada;
      use type Parameters.P_Set;

      procedure Output (P : access Parameter; K : Natural);

      ------------
      -- Output --
      ------------

      procedure Output (P : access Parameter; K : Natural) is

         function Min_Max return String is
           (if Is_Uniq (P.all)
            then ""
            else "{" & AWS.Utils.Image (P.Min)
                 & " .. "
                 & (if P.Max = Positive'Last
                    then "unbounded"
                    else AWS.Utils.Image (P.Max)) & "} ");

      begin
         if P /= null then
            Text_IO.Put (String'(1 .. K => ' '));

            if P.Mode = Types.K_Simple then
               Text_IO.Put ("[simple] " & Min_Max);
               Text_IO.Put_Line
                 (To_String (P.Name) & " ; "
                  & To_Ada (To_Type (Types.Name (P.Typ))));

            else
               declare
                  Def : constant WSDL.Types.Definition :=
                          WSDL.Types.Find (P.Typ);
               begin
                  if Is_Uniq (P.all) then
                     Text_IO.Put ('[' & Types.Image (Def) & "] ");
                  else
                     Text_IO.Put ("[set] " & Min_Max);
                  end if;

                  Text_IO.Put (To_String (P.Name) & " ; ");
                  WSDL.Types.Output (Def);
                  Text_IO.New_Line;

                  if P.Mode = WSDL.Types.K_Record then
                     Output (P.P, K + 3);
                  end if;
               end;
            end if;

            Output (P.Next, K);
         end if;
      end Output;

   begin
      Output (P, 6);
   end Output;

   -------------
   -- Release --
   -------------

   procedure Release (P : in out P_Set) is

      procedure Unchecked_Free is
        new Ada.Unchecked_Deallocation (Parameter, P_Set);

   begin
      if P /= null then
         if P.Mode in Types.Compound_Type then
            Release (P.P);
         end if;

         Release (P.Next);
         Unchecked_Free (P);
      end if;
   end Release;

   -------------
   -- To_SOAP --
   -------------

   function To_SOAP
     (P            : Parameter;
      Object, Name : String;
      Type_Name    : String := "";
      NS           : String := "") return String
   is
      Def : constant WSDL.Types.Definition :=  WSDL.Types.Find (P.Typ);
   begin
      return WSDL.Types.To_SOAP
        (Def, Object, Name, Type_Name, WSDL.Types.Both_Value, Is_Uniq (P), NS);
   end To_SOAP;

end SOAP.WSDL.Parameters;