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) 1992-2007, 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 3,  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 COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Output;   use Output;
  27 with Targparm; use Targparm;
  28
  29 package body Butil is
  30
  31    ----------------------
  32    -- Is_Internal_Unit --
  33    ----------------------
  34
  35    --  Note: the reason we do not use the Fname package for this function
  36    --  is that it would drag too much junk into the binder.
  37
  38    function Is_Internal_Unit return Boolean is
  39    begin
  40       return Is_Predefined_Unit
  41         or else (Name_Len > 4
  42                    and then (Name_Buffer (1 .. 5) = "gnat%"
  43                                or else
  44                              Name_Buffer (1 .. 5) = "gnat."))
  45         or else
  46           (OpenVMS_On_Target
  47            and then Name_Len > 3
  48            and then (Name_Buffer (1 .. 4) = "dec%"
  49                       or else
  50                      Name_Buffer (1 .. 4) = "dec."));
  51
  52    end Is_Internal_Unit;
  53
  54    ------------------------
  55    -- Is_Predefined_Unit --
  56    ------------------------
  57
  58    --  Note: the reason we do not use the Fname package for this function
  59    --  is that it would drag too much junk into the binder.
  60
  61    function Is_Predefined_Unit return Boolean is
  62    begin
  63       return    (Name_Len >  3
  64                   and then Name_Buffer (1 ..  4) = "ada.")
  65
  66         or else (Name_Len >  6
  67                   and then Name_Buffer (1 ..  7) = "system.")
  68
  69         or else (Name_Len > 10
  70                    and then Name_Buffer (1 .. 11) = "interfaces.")
  71
  72         or else (Name_Len >  3
  73                    and then Name_Buffer (1 ..  4) = "ada%")
  74
  75         or else (Name_Len >  8
  76                    and then Name_Buffer (1 ..  9) = "calendar%")
  77
  78         or else (Name_Len >  9
  79                    and then Name_Buffer (1 .. 10) = "direct_io%")
  80
  81         or else (Name_Len > 10
  82                    and then Name_Buffer (1 .. 11) = "interfaces%")
  83
  84         or else (Name_Len > 13
  85                    and then Name_Buffer (1 .. 14) = "io_exceptions%")
  86
  87         or else (Name_Len > 12
  88                    and then Name_Buffer (1 .. 13) = "machine_code%")
  89
  90         or else (Name_Len > 13
  91                    and then Name_Buffer (1 .. 14) = "sequential_io%")
  92
  93         or else (Name_Len >  6
  94                    and then Name_Buffer (1 ..  7) = "system%")
  95
  96         or else (Name_Len >  7
  97                    and then Name_Buffer (1 ..  8) = "text_io%")
  98
  99         or else (Name_Len > 20
 100                    and then Name_Buffer (1 .. 21) = "unchecked_conversion%")
 101
 102         or else (Name_Len > 22
 103                    and then Name_Buffer (1 .. 23) = "unchecked_deallocation%")
 104
 105         or else (Name_Len > 4
 106                    and then Name_Buffer (1 .. 5) = "gnat%")
 107
 108         or else (Name_Len > 4
 109                    and then Name_Buffer (1 .. 5) = "gnat.");
 110    end Is_Predefined_Unit;
 111
 112    ----------------
 113    -- Uname_Less --
 114    ----------------
 115
 116    function Uname_Less (U1, U2 : Unit_Name_Type) return Boolean is
 117    begin
 118       Get_Name_String (U1);
 119
 120       declare
 121          U1_Name : constant String (1 .. Name_Len) :=
 122                                            Name_Buffer (1 .. Name_Len);
 123          Min_Length : Natural;
 124
 125       begin
 126          Get_Name_String (U2);
 127
 128          if Name_Len < U1_Name'Last then
 129             Min_Length := Name_Len;
 130          else
 131             Min_Length := U1_Name'Last;
 132          end if;
 133
 134          for I in 1 .. Min_Length loop
 135             if U1_Name (I) > Name_Buffer (I) then
 136                return False;
 137             elsif U1_Name (I) < Name_Buffer (I) then
 138                return True;
 139             end if;
 140          end loop;
 141
 142          return U1_Name'Last < Name_Len;
 143       end;
 144    end Uname_Less;
 145
 146    ---------------------
 147    -- Write_Unit_Name --
 148    ---------------------
 149
 150    procedure Write_Unit_Name (U : Unit_Name_Type) is
 151    begin
 152       Get_Name_String (U);
 153       Write_Str (Name_Buffer (1 .. Name_Len - 2));
 154
 155       if Name_Buffer (Name_Len) = 's' then
 156          Write_Str (" (spec)");
 157       else
 158          Write_Str (" (body)");
 159       end if;
 160
 161       Name_Len := Name_Len + 5;
 162    end Write_Unit_Name;
 163
 164 end Butil;