gcc/ada/sinput-d.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S I N P U T . D                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision$
  10 --                                                                          --
  11 --          Copyright (C) 2001, Free Software Foundation, Inc.              --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- GNAT was originally developed  by the GNAT team at  New York University. --
  25 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  26 --                                                                          --
  27 ------------------------------------------------------------------------------
  28
  29 with Osint;     use Osint;
  30 with Osint.C;   use Osint.C;
  31
  32 package body Sinput.D is
  33
  34    Dfile : Source_File_Index;
  35    --  Index of currently active debug source file
  36
  37    ------------------------
  38    -- Close_Debug_Source --
  39    ------------------------
  40
  41    procedure Close_Debug_Source is
  42       S    : Source_File_Record renames Source_File.Table (Dfile);
  43       Src  : Source_Buffer_Ptr;
  44
  45    begin
  46       Trim_Lines_Table (Dfile);
  47       Close_Debug_File;
  48
  49       --  Now we need to read the file that we wrote and store it
  50       --  in memory for subsequent access.
  51
  52       Read_Source_File
  53         (S.Debug_Source_Name, S.Source_First, S.Source_Last, Src);
  54       S.Source_Text := Src;
  55    end Close_Debug_Source;
  56
  57    -------------------------
  58    -- Create_Debug_Source --
  59    -------------------------
  60
  61    procedure Create_Debug_Source
  62      (Source : Source_File_Index;
  63       Loc    : out Source_Ptr)
  64    is
  65    begin
  66       Loc := Source_File.Table (Source_File.Last).Source_Last + 1;
  67       Source_File.Increment_Last;
  68       Dfile := Source_File.Last;
  69
  70       declare
  71          S : Source_File_Record renames Source_File.Table (Dfile);
  72
  73       begin
  74          S := Source_File.Table (Source);
  75          S.Debug_Source_Name := Create_Debug_File (S.File_Name);
  76          S.Source_First      := Loc;
  77          S.Source_Last       := Loc;
  78          S.Lines_Table       := null;
  79          S.Last_Source_Line  := 1;
  80
  81          --  Allocate lines table, guess that it needs to be three times
  82          --  bigger than the original source (in number of lines).
  83
  84          Alloc_Line_Tables
  85            (S, Int (Source_File.Table (Source).Last_Source_Line * 3));
  86          S.Lines_Table (1) := Loc;
  87       end;
  88    end Create_Debug_Source;
  89
  90    ----------------------
  91    -- Write_Debug_Line --
  92    ----------------------
  93
  94    procedure Write_Debug_Line (Str : String; Loc : in out Source_Ptr) is
  95       S : Source_File_Record renames Source_File.Table (Dfile);
  96
  97    begin
  98       --  Ignore write request if null line at start of file
  99
 100       if Str'Length = 0 and then Loc = S.Source_First then
 101          return;
 102
 103       --  Here we write the line, and update the source record entry
 104
 105       else
 106          Write_Debug_Info (Str (Str'First .. Str'Last - 1));
 107          Add_Line_Tables_Entry (S, Loc);
 108          Loc := Loc - 1 + Source_Ptr (Str'Length + Debug_File_Eol_Length);
 109          S.Source_Last := Loc;
 110       end if;
 111    end Write_Debug_Line;
 112
 113 end Sinput.D;