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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                 S Y S T E M . E X C E P T I O N _ T A B L E              --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 1996-2009, Free Software Foundation, Inc.         --

--                                                                          --

-- 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 3,  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.                                     --

--                                                                          --

-- As a special exception under Section 7 of GPL version 3, you are granted --

-- additional permissions described in the GCC Runtime Library Exception,   --

-- version 3.1, as published by the Free Software Foundation.               --

--                                                                          --

-- You should have received a copy of the GNU General Public License and    --

-- a copy of the GCC Runtime Library Exception along with this program;     --

-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --

-- <http://www.gnu.org/licenses/>.                                          --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

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--  This package implements the interface used to maintain a table of

--  registered exception names, for the implementation of the mapping

--  of names to exceptions (used for exception streams and attributes)

pragma Compiler_Unit;

with System.Standard_Library;

package System.Exception_Table is

   pragma Elaborate_Body;

   package SSL renames System.Standard_Library;

   procedure Register_Exception (X : SSL.Exception_Data_Ptr);

   pragma Inline (Register_Exception);

   --  Register an exception in the hash table mapping. This function is

   --  called during elaboration of library packages. For exceptions that

   --  are declared within subprograms, the registration occurs the first

   --  time that an exception is elaborated during a call of the subprogram.

   --

   --  Note: all calls to Register_Exception other than those to register the

   --  predefined exceptions are suppressed if the application is compiled

   --  with pragma Restrictions (No_Exception_Registration).

   function Internal_Exception

     (X                   : String;

      Create_If_Not_Exist : Boolean := True) return SSL.Exception_Data_Ptr;

   --  Given an exception_name X, returns a pointer to the actual internal

   --  exception data. A new entry is created in the table if X does not

   --  exist yet and Create_If_Not_Exist is True. If it is false and X

   --  does not exist yet, null is returned.

   function Registered_Exceptions_Count return Natural;

   --  Return the number of currently registered exceptions

   type Exception_Data_Array is array (Natural range <>)

     of SSL.Exception_Data_Ptr;

   procedure Get_Registered_Exceptions

     (List : out Exception_Data_Array;

      Last : out Integer);

   --  Return the list of registered exceptions

end System.Exception_Table;