1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--           S Y S T E M . 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) 1999-2015, 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 hexadecimal addresses
34--  of the form "0x...".
35
36pragma Polling (Off);
37--  We must turn polling off for this unit, because otherwise we can get
38--  elaboration circularities when polling is turned on.
39
40with Ada.Exceptions.Traceback; use Ada.Exceptions.Traceback;
41with System.Address_Image;
42
43package body System.Traceback.Symbolic is
44
45   ------------------------
46   -- Symbolic_Traceback --
47   ------------------------
48
49   function Symbolic_Traceback
50     (Traceback : System.Traceback_Entries.Tracebacks_Array) return String
51   is
52   begin
53      if Traceback'Length = 0 then
54         return "";
55
56      else
57         declare
58            Img : String := System.Address_Image (Traceback (Traceback'First));
59
60            Result : String (1 .. (Img'Length + 3) * Traceback'Length);
61            Last   : Natural := 0;
62
63         begin
64            for J in Traceback'Range loop
65               Img := System.Address_Image (Traceback (J));
66               Result (Last + 1 .. Last + 2) := "0x";
67               Last := Last + 2;
68               Result (Last + 1 .. Last + Img'Length) := Img;
69               Last := Last + Img'Length + 1;
70               Result (Last) := ' ';
71            end loop;
72
73            Result (Last) := ASCII.LF;
74            return Result (1 .. Last);
75         end;
76      end if;
77   end Symbolic_Traceback;
78
79   function Symbolic_Traceback
80     (E : Ada.Exceptions.Exception_Occurrence) return String
81   is
82   begin
83      return Symbolic_Traceback (Ada.Exceptions.Traceback.Tracebacks (E));
84   end Symbolic_Traceback;
85
86end System.Traceback.Symbolic;
87