1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                 S Y S T E M . E X C E P T I O N _ T A B L E              --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1996-2009, Free Software Foundation, Inc.         --
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 package implements the interface used to maintain a table of
33--  registered exception names, for the implementation of the mapping
34--  of names to exceptions (used for exception streams and attributes)
35
36pragma Compiler_Unit;
37
38with System.Standard_Library;
39
40package System.Exception_Table is
41   pragma Elaborate_Body;
42
43   package SSL renames System.Standard_Library;
44
45   procedure Register_Exception (X : SSL.Exception_Data_Ptr);
46   pragma Inline (Register_Exception);
47   --  Register an exception in the hash table mapping. This function is
48   --  called during elaboration of library packages. For exceptions that
49   --  are declared within subprograms, the registration occurs the first
50   --  time that an exception is elaborated during a call of the subprogram.
51   --
52   --  Note: all calls to Register_Exception other than those to register the
53   --  predefined exceptions are suppressed if the application is compiled
54   --  with pragma Restrictions (No_Exception_Registration).
55
56   function Internal_Exception
57     (X                   : String;
58      Create_If_Not_Exist : Boolean := True) return SSL.Exception_Data_Ptr;
59   --  Given an exception_name X, returns a pointer to the actual internal
60   --  exception data. A new entry is created in the table if X does not
61   --  exist yet and Create_If_Not_Exist is True. If it is false and X
62   --  does not exist yet, null is returned.
63
64   function Registered_Exceptions_Count return Natural;
65   --  Return the number of currently registered exceptions
66
67   type Exception_Data_Array is array (Natural range <>)
68     of SSL.Exception_Data_Ptr;
69
70   procedure Get_Registered_Exceptions
71     (List : out Exception_Data_Array;
72      Last : out Integer);
73   --  Return the list of registered exceptions
74
75end System.Exception_Table;
76