-------------------------------------------------------------------
--           RAPID - RAPID ADA PORTABLE INTERFACE DESIGNER         
--           GWINDOWS PEER FOR THE MCC GUI PACKAGE LIBRARY 
--           Copyright (C) 2001 Martin C. Carlisle.                
--                                                                 
-- RAPID 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.  RAPID 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
-- distributed with RAPID; see file COPYING.  If not, write to the 
-- Free Software Foundation,  59 Temple Place - Suite 330,  Boston, 
-- MA 02111-1307, USA.                                                 
--                                                                     
-- As a special exception, if other files instantiate generics from
-- this unit, or you link this unit with other files to produce an 
-- executable, this unit does not by itself cause the resulting 
-- executable to be covered by the GNU General Public License.  
-- This exception does not however invalidate any other reasons 
-- why the executable file might be covered by the GNU Public 
-- License.  This exception does not apply to executables which
-- are GUI design tools, or that could act as a replacement
-- for RAPID.
------------------------------------------------------------------------------
-- This file adds pointers so that we can always go from a Gwindows
-- type back to the Mcc_Gui type.
------------------------------------------------------------------------------
with System;
with Gnat.HTable;
with Mcc.Gui;
package Peer_To_Mcc is
   -- this number should probably be prime, I didn't bother
   -- to check.
   subtype Hash_Range is Integer range 0..1147;
   
   ----------------------------------------------------------------
   -- Hash an address
   ----------------------------------------------------------------
   function Hash_Address(X : in System.Address) return Hash_Range;
   
   ----------------------------------------------------------------
   function Equal(X,Y : in System.Address) return Boolean renames
      System."=";
   ----------------------------------------------------------------
   
   package Hash_Package is new Gnat.HTable.Simple_HTable(
      Header_Num    => Hash_Range,
      Element       => Mcc.Gui.Object_Pointer,
      No_Element    => null,
      Key           => System.Address,
      Hash          => Hash_Address,
      Equal         => Equal);
end Peer_To_Mcc;