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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) 1995-2005, 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- 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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