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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--                 G N A T . D E B U G _ U T I L I T I E S                  --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                     Copyright (C) 1995-2010, 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 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.      --
--                                                                          --
------------------------------------------------------------------------------
 
--  Debugging utilities
 
--  This package provides some useful utility subprograms for use in writing
--  routines that generate debugging output.
 
with System;
 
package GNAT.Debug_Utilities is
   pragma Pure;
 
   Address_64 : constant Boolean := Standard'Address_Size = 64;
   --  Set true if 64 bit addresses (assumes only 32 and 64 are possible)
 
   Address_Image_Length : constant := 13 + 10 * Boolean'Pos (Address_64);
   --  Length of string returned by Image function for an address
 
   subtype Image_String is String (1 .. Address_Image_Length);
   --  Subtype returned by Image function for an address
 
   Address_Image_C_Length : constant := 10 + 8 * Boolean'Pos (Address_64);
   --  Length of string returned by Image_C function
 
   subtype Image_C_String is String (1 .. Address_Image_C_Length);
   --  Subtype returned by Image_C function
 
   function Image (S : String) return String;
   --  Returns a string image of S, obtained by prepending and appending
   --  quote (") characters and doubling any quote characters in the string.
   --  The maximum length of the result is thus 2 ** S'Length + 2.
 
   function Image (A : System.Address) return Image_String;
   --  Returns a string of the form 16#hhhh_hhhh# for 32-bit addresses
   --  or 16#hhhh_hhhh_hhhh_hhhh# for 64-bit addresses. Hex characters
   --  are in upper case.
 
   function Image_C (A : System.Address) return Image_C_String;
   --  Returns a string of the form 0xhhhhhhhh for 32 bit addresses or
   --  0xhhhhhhhhhhhhhhhh for 64-bit addresses. Hex characters are in
   --  upper case.
 
   function Value (S : String) return System.Address;
   --  Given a valid integer literal in any form, including the form returned
   --  by the Image function in this package, yields the corresponding address.
   --  Note that this routine will handle any Ada integer format, and will
   --  also handle hex constants in C format (0xhh..hhh). Constraint_Error
   --  may be raised for obviously incorrect data, but the routine is fairly
   --  permissive, and in particular, all underscores in whatever position
   --  are simply ignored completely.
 
end GNAT.Debug_Utilities;
 

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