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------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- G N A T . M O S T _ R E C E N T _ E X C E P T I O N --
-- --
-- B o d y --
-- --
-- Copyright (C) 2000-2006, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Ada.Exceptions.Is_Null_Occurrence;
with System.Soft_Links;
package body GNAT.Most_Recent_Exception is
----------------
-- Occurrence --
----------------
function Occurrence return Ada.Exceptions.Exception_Occurrence is
EOA : constant Ada.Exceptions.Exception_Occurrence_Access :=
GNAT.Most_Recent_Exception.Occurrence_Access;
use type Ada.Exceptions.Exception_Occurrence_Access;
begin
pragma Warnings (Off);
if EOA = null then
return Ada.Exceptions.Null_Occurrence;
else
return EOA.all;
end if;
pragma Warnings (On);
-- ???Note that both of the above return statements violate the Ada
-- 2005 rule forbidding copying of limited objects (see RM-7.5(2.8/2)).
-- When compiled with -gnatg, the compiler gives a warning instead of
-- an error, so we can turn it off.
-- To fix this, remove the pragmas Warnings above, and use the following
-- code. We can't do that yet, because AI-318 is not yet implemented.
--
-- return Result : Ada.Exceptions.Exception_Occurrence do
-- if EOA = null then
-- Ada.Exceptions.Save_Occurrence
-- (Target => Result,
-- Source => Ada.Exceptions.Null_Occurrence);
-- else
-- Ada.Exceptions.Save_Occurrence
-- (Target => Result,
-- Source => EOA.all);
-- end if;
-- end return;
end Occurrence;
-----------------------
-- Occurrence_Access --
-----------------------
function Occurrence_Access
return Ada.Exceptions.Exception_Occurrence_Access
is
use Ada.Exceptions;
EOA : constant Exception_Occurrence_Access :=
System.Soft_Links.Get_Current_Excep.all;
begin
if EOA = null then
return null;
elsif Is_Null_Occurrence (EOA.all) then
return null;
else
return EOA;
end if;
end Occurrence_Access;
end GNAT.Most_Recent_Exception;
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