gcc/ada/butil.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                B U T I L                                 --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2004 Free Software Foundation, Inc.          --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Hostparm; use Hostparm;
  28 with Namet;    use Namet;
  29 with Output;   use Output;
  30
  31 package body Butil is
  32
  33    ----------------------
  34    -- Is_Internal_Unit --
  35    ----------------------
  36
  37    --  Note: the reason we do not use the Fname package for this function
  38    --  is that it would drag too much junk into the binder.
  39
  40    function Is_Internal_Unit return Boolean is
  41    begin
  42       return Is_Predefined_Unit
  43         or else (Name_Len > 4
  44                    and then (Name_Buffer (1 .. 5) = "gnat%"
  45                                or else
  46                              Name_Buffer (1 .. 5) = "gnat."))
  47         or else
  48           (OpenVMS
  49              and then Name_Len > 3
  50              and then (Name_Buffer (1 .. 4) = "dec%"
  51                          or else
  52                        Name_Buffer (1 .. 4) = "dec."));
  53
  54    end Is_Internal_Unit;
  55
  56    ------------------------
  57    -- Is_Predefined_Unit --
  58    ------------------------
  59
  60    --  Note: the reason we do not use the Fname package for this function
  61    --  is that it would drag too much junk into the binder.
  62
  63    function Is_Predefined_Unit return Boolean is
  64    begin
  65       return    (Name_Len >  3
  66                   and then Name_Buffer (1 ..  4) = "ada.")
  67
  68         or else (Name_Len >  6
  69                   and then Name_Buffer (1 ..  7) = "system.")
  70
  71         or else (Name_Len > 10
  72                    and then Name_Buffer (1 .. 11) = "interfaces.")
  73
  74         or else (Name_Len >  3
  75                    and then Name_Buffer (1 ..  4) = "ada%")
  76
  77         or else (Name_Len >  8
  78                    and then Name_Buffer (1 ..  9) = "calendar%")
  79
  80         or else (Name_Len >  9
  81                    and then Name_Buffer (1 .. 10) = "direct_io%")
  82
  83         or else (Name_Len > 10
  84                    and then Name_Buffer (1 .. 11) = "interfaces%")
  85
  86         or else (Name_Len > 13
  87                    and then Name_Buffer (1 .. 14) = "io_exceptions%")
  88
  89         or else (Name_Len > 12
  90                    and then Name_Buffer (1 .. 13) = "machine_code%")
  91
  92         or else (Name_Len > 13
  93                    and then Name_Buffer (1 .. 14) = "sequential_io%")
  94
  95         or else (Name_Len >  6
  96                    and then Name_Buffer (1 ..  7) = "system%")
  97
  98         or else (Name_Len >  7
  99                    and then Name_Buffer (1 ..  8) = "text_io%")
 100
 101         or else (Name_Len > 20
 102                    and then Name_Buffer (1 .. 21) = "unchecked_conversion%")
 103
 104         or else (Name_Len > 22
 105                    and then Name_Buffer (1 .. 23) = "unchecked_deallocation%")
 106
 107         or else (Name_Len > 4
 108                    and then Name_Buffer (1 .. 5) = "gnat%")
 109
 110         or else (Name_Len > 4
 111                    and then Name_Buffer (1 .. 5) = "gnat.");
 112    end Is_Predefined_Unit;
 113
 114    ----------------
 115    -- Uname_Less --
 116    ----------------
 117
 118    function Uname_Less (U1, U2 : Unit_Name_Type) return Boolean is
 119    begin
 120       Get_Name_String (U1);
 121
 122       declare
 123          U1_Name : constant String (1 .. Name_Len) :=
 124                                            Name_Buffer (1 .. Name_Len);
 125          Min_Length : Natural;
 126
 127       begin
 128          Get_Name_String (U2);
 129
 130          if Name_Len < U1_Name'Last then
 131             Min_Length := Name_Len;
 132          else
 133             Min_Length := U1_Name'Last;
 134          end if;
 135
 136          for I in 1 .. Min_Length loop
 137             if U1_Name (I) > Name_Buffer (I) then
 138                return False;
 139             elsif U1_Name (I) < Name_Buffer (I) then
 140                return True;
 141             end if;
 142          end loop;
 143
 144          return U1_Name'Last < Name_Len;
 145       end;
 146    end Uname_Less;
 147
 148    ---------------------
 149    -- Write_Unit_Name --
 150    ---------------------
 151
 152    procedure Write_Unit_Name (U : Unit_Name_Type) is
 153    begin
 154       Get_Name_String (U);
 155       Write_Str (Name_Buffer (1 .. Name_Len - 2));
 156
 157       if Name_Buffer (Name_Len) = 's' then
 158          Write_Str (" (spec)");
 159       else
 160          Write_Str (" (body)");
 161       end if;
 162
 163       Name_Len := Name_Len + 5;
 164    end Write_Unit_Name;
 165
 166 end Butil;