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) 1996-2007, 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 2,  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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This package implements the interface used to maintain a table of
  35 --  registered exception names, for the implementation of the mapping
  36 --  of names to exceptions (used for exception streams and attributes)
  37
  38 pragma Warnings (Off);
  39 pragma Compiler_Unit;
  40 pragma Warnings (On);
  41
  42 with System.Standard_Library;
  43
  44 package System.Exception_Table is
  45    pragma Elaborate_Body;
  46
  47    package SSL renames System.Standard_Library;
  48
  49    procedure Register_Exception (X : SSL.Exception_Data_Ptr);
  50    pragma Inline (Register_Exception);
  51    --  Register an exception in the hash table mapping. This function is
  52    --  called during elaboration of library packages. For exceptions that
  53    --  are declared within subprograms, the registration occurs the first
  54    --  time that an exception is elaborated during a call of the subprogram.
  55    --
  56    --  Note: all calls to Register_Exception other than those to register the
  57    --  predefined exceptions are suppressed if the application is compiled
  58    --  with pragma Restrictions (No_Exception_Registration).
  59
  60    function Internal_Exception
  61      (X                   : String;
  62       Create_If_Not_Exist : Boolean := True) return SSL.Exception_Data_Ptr;
  63    --  Given an exception_name X, returns a pointer to the actual internal
  64    --  exception data. A new entry is created in the table if X does not
  65    --  exist yet and Create_If_Not_Exist is True. If it is false and X
  66    --  does not exist yet, null is returned.
  67
  68    function Registered_Exceptions_Count return Natural;
  69    --  Return the number of currently registered exceptions
  70
  71    type Exception_Data_Array is array (Natural range <>)
  72      of SSL.Exception_Data_Ptr;
  73
  74    procedure Get_Registered_Exceptions
  75      (List : out Exception_Data_Array;
  76       Last : out Integer);
  77    --  Return the list of registered exceptions
  78
  79 end System.Exception_Table;