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