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