gcc/ada/g-trasym.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --             G N A T . T R A C E B A C K . S Y M B O L I C                --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                     Copyright (C) 1999-2012, AdaCore                     --
  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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This is the default implementation for platforms where the full capability
  33 --  is not supported. It returns tracebacks as lists of LF separated strings of
  34 --  the form "0x..." corresponding to the addresses.
  35
  36 with Ada.Exceptions.Traceback; use Ada.Exceptions.Traceback;
  37 with System.Address_Image;
  38
  39 package body GNAT.Traceback.Symbolic is
  40
  41    ------------------------
  42    -- Symbolic_Traceback --
  43    ------------------------
  44
  45    function Symbolic_Traceback (Traceback : Tracebacks_Array) return String is
  46    begin
  47       if Traceback'Length = 0 then
  48          return "";
  49
  50       else
  51          declare
  52             Img : String := System.Address_Image (Traceback (Traceback'First));
  53
  54             Result : String (1 .. (Img'Length + 3) * Traceback'Length);
  55             Last   : Natural := 0;
  56
  57          begin
  58             for J in Traceback'Range loop
  59                Img := System.Address_Image (Traceback (J));
  60                Result (Last + 1 .. Last + 2) := "0x";
  61                Last := Last + 2;
  62                Result (Last + 1 .. Last + Img'Length) := Img;
  63                Last := Last + Img'Length + 1;
  64                Result (Last) := ASCII.LF;
  65             end loop;
  66
  67             return Result (1 .. Last);
  68          end;
  69       end if;
  70    end Symbolic_Traceback;
  71
  72    function Symbolic_Traceback (E : Exception_Occurrence) return String is
  73    begin
  74       return Symbolic_Traceback (Tracebacks (E));
  75    end Symbolic_Traceback;
  76
  77 end GNAT.Traceback.Symbolic;