gcc/ada/s-exctab.ads

   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
  36 pragma Compiler_Unit;
  37
  38 with System.Standard_Library;
  39
  40 package 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
  75 end System.Exception_Table;