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) 1992-2018, 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
  28 package body Butil is
  29
  30    ----------------------
  31    -- Is_Internal_Unit --
  32    ----------------------
  33
  34    --  Note: the reason we do not use the Fname package for this function
  35    --  is that it would drag too much junk into the binder.
  36
  37    function Is_Internal_Unit return Boolean is
  38    begin
  39       return Is_Predefined_Unit
  40         or else (Name_Len > 4 and then (Name_Buffer (1 .. 5) = "gnat%"
  41                                           or else
  42                                         Name_Buffer (1 .. 5) = "gnat."));
  43    end Is_Internal_Unit;
  44
  45    ------------------------
  46    -- Is_Predefined_Unit --
  47    ------------------------
  48
  49    --  Note: the reason we do not use the Fname package for this function
  50    --  is that it would drag too much junk into the binder.
  51
  52    function Is_Predefined_Unit return Boolean is
  53       L : Natural renames Name_Len;
  54       B : String  renames Name_Buffer;
  55    begin
  56       return    (L >  3 and then B (1 ..  4) = "ada.")
  57         or else (L >  6 and then B (1 ..  7) = "system.")
  58         or else (L > 10 and then B (1 .. 11) = "interfaces.")
  59         or else (L >  3 and then B (1 ..  4) = "ada%")
  60         or else (L >  8 and then B (1 ..  9) = "calendar%")
  61         or else (L >  9 and then B (1 .. 10) = "direct_io%")
  62         or else (L > 10 and then B (1 .. 11) = "interfaces%")
  63         or else (L > 13 and then B (1 .. 14) = "io_exceptions%")
  64         or else (L > 12 and then B (1 .. 13) = "machine_code%")
  65         or else (L > 13 and then B (1 .. 14) = "sequential_io%")
  66         or else (L >  6 and then B (1 ..  7) = "system%")
  67         or else (L >  7 and then B (1 ..  8) = "text_io%")
  68         or else (L > 20 and then B (1 .. 21) = "unchecked_conversion%")
  69         or else (L > 22 and then B (1 .. 23) = "unchecked_deallocation%")
  70         or else (L >  4 and then B (1 ..  5) = "gnat%")
  71         or else (L >  4 and then B (1 ..  5) = "gnat.");
  72    end Is_Predefined_Unit;
  73
  74    ----------------
  75    -- Uname_Less --
  76    ----------------
  77
  78    function Uname_Less (U1, U2 : Unit_Name_Type) return Boolean is
  79    begin
  80       Get_Name_String (U1);
  81
  82       declare
  83          U1_Name : constant String (1 .. Name_Len) :=
  84                      Name_Buffer (1 .. Name_Len);
  85          Min_Length : Natural;
  86
  87       begin
  88          Get_Name_String (U2);
  89
  90          if Name_Len < U1_Name'Last then
  91             Min_Length := Name_Len;
  92          else
  93             Min_Length := U1_Name'Last;
  94          end if;
  95
  96          for J in 1 .. Min_Length loop
  97             if U1_Name (J) > Name_Buffer (J) then
  98                return False;
  99             elsif U1_Name (J) < Name_Buffer (J) then
 100                return True;
 101             end if;
 102          end loop;
 103
 104          return U1_Name'Last < Name_Len;
 105       end;
 106    end Uname_Less;
 107
 108    ---------------------
 109    -- Write_Unit_Name --
 110    ---------------------
 111
 112    procedure Write_Unit_Name (U : Unit_Name_Type) is
 113    begin
 114       Get_Name_String (U);
 115       Write_Str (Name_Buffer (1 .. Name_Len - 2));
 116
 117       if Name_Buffer (Name_Len) = 's' then
 118          Write_Str (" (spec)");
 119       else
 120          Write_Str (" (body)");
 121       end if;
 122
 123       Name_Len := Name_Len + 5;
 124    end Write_Unit_Name;
 125
 126 end Butil;