84 lines
4.6 KiB
Ada
84 lines
4.6 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUNTIME COMPONENTS --
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-- --
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-- G N A T . D E B U G _ U T I L I T I E S --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1995-2003 Ada Core Technologies, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- Debugging utilities
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-- This package provides some useful utility subprograms for use in writing
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-- routines that generate debugging output.
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with System;
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package GNAT.Debug_Utilities is
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pragma Pure (Debug_Utilities);
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Address_64 : constant Boolean := Standard'Address_Size = 64;
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-- Set true if 64 bit addresses (assumes only 32 and 64 are possible)
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Address_Image_Length : constant := 13 + 10 * Boolean'Pos (Address_64);
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-- Length of string returned by Image function for an address
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subtype Image_String is String (1 .. Address_Image_Length);
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-- Subtype returned by Image function for an address
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Address_Image_C_Length : constant := 10 + 8 * Boolean'Pos (Address_64);
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-- Length of string returned by Image_C function
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subtype Image_C_String is String (1 .. Address_Image_C_Length);
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-- Subtype returned by Image_C function
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function Image (S : String) return String;
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-- Returns a string image of S, obtained by prepending and appending
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-- quote (") characters and doubling any quote characters in the string.
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-- The maximum length of the result is thus 2 ** S'Length + 2.
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function Image (A : System.Address) return Image_String;
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-- Returns a string of the form 16#hhhh_hhhh# for 32-bit addresses
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-- or 16#hhhh_hhhh_hhhh_hhhh# for 64-bit addresses. Hex characters
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-- are in upper case.
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function Image_C (A : System.Address) return Image_C_String;
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-- Returns a string of the form 0xhhhhhhhh for 32 bit addresses or
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-- 0xhhhhhhhhhhhhhhhh for 64-bit addresses. Hex characters are in
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-- upper case.
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function Value (S : String) return System.Address;
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-- Given a valid integer literal in any form, including the form returned
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-- by the Image function in this package, yields the corresponding address.
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-- Note that this routine will handle any Ada integer format, and will
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-- also handle hex constants in C format (0xhh..hhh). Constraint_Error
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-- may be raised for obviously incorrect data, but the routine is fairly
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-- permissive, and in particular, all underscores in whatever position
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-- are simply ignored completely.
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end GNAT.Debug_Utilities;
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