gcc/ada/g-moreex.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT LIBRARY COMPONENTS                          --
   4 --                                                                          --
   5 --            G N A T . M O S T _ R E C E N T _ E X C E P T I O N           --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.4 $                              --
  10 --                                                                          --
  11 --              Copyright (C) 2000 Ada Core Technologies, 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 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNAT was originally developed  by the GNAT team at  New York University. --
  32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  33 --                                                                          --
  34 ------------------------------------------------------------------------------
  35
  36 with Ada.Exceptions.Is_Null_Occurrence;
  37 with System.Soft_Links;
  38
  39 package body GNAT.Most_Recent_Exception is
  40
  41    ----------------
  42    -- Occurrence --
  43    ----------------
  44
  45    function Occurrence
  46      return Ada.Exceptions.Exception_Occurrence
  47    is
  48       EOA : constant Ada.Exceptions.Exception_Occurrence_Access :=
  49               GNAT.Most_Recent_Exception.Occurrence_Access;
  50
  51       use type Ada.Exceptions.Exception_Occurrence_Access;
  52
  53    begin
  54       if EOA = null then
  55          return Ada.Exceptions.Null_Occurrence;
  56       else
  57          return EOA.all;
  58       end if;
  59    end Occurrence;
  60
  61    -----------------------
  62    -- Occurrence_Access --
  63    -----------------------
  64
  65    function Occurrence_Access
  66      return Ada.Exceptions.Exception_Occurrence_Access
  67    is
  68       use Ada.Exceptions;
  69
  70       EOA : constant Exception_Occurrence_Access :=
  71               System.Soft_Links.Get_Current_Excep.all;
  72
  73    begin
  74       if EOA = null then
  75          return null;
  76
  77       elsif Is_Null_Occurrence (EOA.all) then
  78          return null;
  79
  80       else
  81          return EOA;
  82       end if;
  83    end Occurrence_Access;
  84
  85 end GNAT.Most_Recent_Exception;