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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                                B U T I L                                 --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2007, 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 3,  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 COPYING3.  If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license.          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------
 
with Output;   use Output;
with Targparm; use Targparm;
 
package body Butil is
 
   ----------------------
   -- Is_Internal_Unit --
   ----------------------
 
   --  Note: the reason we do not use the Fname package for this function
   --  is that it would drag too much junk into the binder.
 
   function Is_Internal_Unit return Boolean is
   begin
      return Is_Predefined_Unit
        or else (Name_Len > 4
                   and then (Name_Buffer (1 .. 5) = "gnat%"
                               or else
                             Name_Buffer (1 .. 5) = "gnat."))
        or else
          (OpenVMS_On_Target
           and then Name_Len > 3
           and then (Name_Buffer (1 .. 4) = "dec%"
                      or else
                     Name_Buffer (1 .. 4) = "dec."));
 
   end Is_Internal_Unit;
 
   ------------------------
   -- Is_Predefined_Unit --
   ------------------------
 
   --  Note: the reason we do not use the Fname package for this function
   --  is that it would drag too much junk into the binder.
 
   function Is_Predefined_Unit return Boolean is
   begin
      return    (Name_Len >  3
                  and then Name_Buffer (1 ..  4) = "ada.")
 
        or else (Name_Len >  6
                  and then Name_Buffer (1 ..  7) = "system.")
 
        or else (Name_Len > 10
                   and then Name_Buffer (1 .. 11) = "interfaces.")
 
        or else (Name_Len >  3
                   and then Name_Buffer (1 ..  4) = "ada%")
 
        or else (Name_Len >  8
                   and then Name_Buffer (1 ..  9) = "calendar%")
 
        or else (Name_Len >  9
                   and then Name_Buffer (1 .. 10) = "direct_io%")
 
        or else (Name_Len > 10
                   and then Name_Buffer (1 .. 11) = "interfaces%")
 
        or else (Name_Len > 13
                   and then Name_Buffer (1 .. 14) = "io_exceptions%")
 
        or else (Name_Len > 12
                   and then Name_Buffer (1 .. 13) = "machine_code%")
 
        or else (Name_Len > 13
                   and then Name_Buffer (1 .. 14) = "sequential_io%")
 
        or else (Name_Len >  6
                   and then Name_Buffer (1 ..  7) = "system%")
 
        or else (Name_Len >  7
                   and then Name_Buffer (1 ..  8) = "text_io%")
 
        or else (Name_Len > 20
                   and then Name_Buffer (1 .. 21) = "unchecked_conversion%")
 
        or else (Name_Len > 22
                   and then Name_Buffer (1 .. 23) = "unchecked_deallocation%")
 
        or else (Name_Len > 4
                   and then Name_Buffer (1 .. 5) = "gnat%")
 
        or else (Name_Len > 4
                   and then Name_Buffer (1 .. 5) = "gnat.");
   end Is_Predefined_Unit;
 
   ----------------
   -- Uname_Less --
   ----------------
 
   function Uname_Less (U1, U2 : Unit_Name_Type) return Boolean is
   begin
      Get_Name_String (U1);
 
      declare
         U1_Name : constant String (1 .. Name_Len) :=
                                           Name_Buffer (1 .. Name_Len);
         Min_Length : Natural;
 
      begin
         Get_Name_String (U2);
 
         if Name_Len < U1_Name'Last then
            Min_Length := Name_Len;
         else
            Min_Length := U1_Name'Last;
         end if;
 
         for I in 1 .. Min_Length loop
            if U1_Name (I) > Name_Buffer (I) then
               return False;
            elsif U1_Name (I) < Name_Buffer (I) then
               return True;
            end if;
         end loop;
 
         return U1_Name'Last < Name_Len;
      end;
   end Uname_Less;
 
   ---------------------
   -- Write_Unit_Name --
   ---------------------
 
   procedure Write_Unit_Name (U : Unit_Name_Type) is
   begin
      Get_Name_String (U);
      Write_Str (Name_Buffer (1 .. Name_Len - 2));
 
      if Name_Buffer (Name_Len) = 's' then
         Write_Str (" (spec)");
      else
         Write_Str (" (body)");
      end if;
 
      Name_Len := Name_Len + 5;
   end Write_Unit_Name;
 
end Butil;
 

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