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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                              I M P U N I T                               --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                                                                          --
--             Copyright (C) 2000 Free Software Foundation, Inc.            --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 GNAT;  see file COPYING.  If not, write --
-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
-- MA 02111-1307, USA.                                                      --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

--  This package contains data and functions used to determine if a given
--  unit is an internal unit intended only for use by the implementation
--  and which should not be directly WITH'ed by user code.

with Types; use Types;

package Impunit is

   function Implementation_Unit (U : Unit_Number_Type) return Boolean;
   --  Given the unit number of a unit, this function determines if it is a
   --  unit that is intended to be used only internally by the implementation.
   --  This is used for posting warnings for improper WITH's of such units
   --  (such WITH's are allowed without warnings only in GNAT_Mode set by
   --  the use of -gnatg). True is returned if a warning should be posted.

end Impunit;