------------------------------------------------------------------------------ -- -- -- GNAT LIBRARY COMPONENTS -- -- -- -- G N A T . D E B U G _ U T I L I T I E S -- -- -- -- B o d y -- -- -- -- Copyright (C) 1997-2004 Ada Core Technologies, Inc. -- -- -- -- 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, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, 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. -- -- -- ------------------------------------------------------------------------------ with System; use System; with System.Storage_Elements; use System.Storage_Elements; package body GNAT.Debug_Utilities is H : constant array (0 .. 15) of Character := "0123456789ABCDEF"; -- Table of hex digits ----------- -- Image -- ----------- -- Address case function Image (A : Address) return Image_String is S : Image_String; P : Natural := Address_Image_Length - 1; N : Integer_Address := To_Integer (A); U : Natural := 0; begin S (S'Last) := '#'; while P > 3 loop if U = 4 then S (P) := '_'; P := P - 1; U := 1; else U := U + 1; end if; S (P) := H (Integer (N mod 16)); P := P - 1; N := N / 16; end loop; S (1 .. 3) := "16#"; return S; end Image; ----------- -- Image -- ----------- -- String case function Image (S : String) return String is W : String (1 .. 2 * S'Length + 2); P : Positive := 1; begin W (1) := '"'; for J in S'Range loop if S (J) = '"' then P := P + 1; W (P) := '"'; end if; P := P + 1; W (P) := S (J); end loop; P := P + 1; W (P) := '"'; return W (1 .. P); end Image; ------------- -- Image_C -- ------------- function Image_C (A : Address) return Image_C_String is S : Image_C_String; N : Integer_Address := To_Integer (A); begin for P in reverse 3 .. S'Last loop S (P) := H (Integer (N mod 16)); N := N / 16; end loop; S (1 .. 2) := "0x"; return S; end Image_C; ----------- -- Value -- ----------- function Value (S : String) return System.Address is Base : Integer_Address := 10; Res : Integer_Address := 0; Last : Natural := S'Last; C : Character; N : Integer_Address; begin -- Skip final Ada 95 base character if S (Last) = '#' or else S (Last) = ':' then Last := Last - 1; end if; -- Loop through characters for J in S'First .. Last loop C := S (J); -- C format hex constant if C = 'x' then if Res /= 0 then raise Constraint_Error; end if; Base := 16; -- Ada form based literal elsif C = '#' or else C = ':' then Base := Res; Res := 0; -- Ignore all underlines elsif C = '_' then null; -- Otherwise must have digit else if C in '0' .. '9' then N := Character'Pos (C) - Character'Pos ('0'); elsif C in 'A' .. 'F' then N := Character'Pos (C) - (Character'Pos ('A') - 10); elsif C in 'a' .. 'f' then N := Character'Pos (C) - (Character'Pos ('a') - 10); else raise Constraint_Error; end if; if N >= Base then raise Constraint_Error; else Res := Res * Base + N; end if; end if; end loop; return To_Address (Res); end Value; end GNAT.Debug_Utilities;