New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45955 138bc75d-0d04-0410-961f-82ee72b054a4

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         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                                  --
+--                                                                          --
+--                            $Revision: 1.3 $                              --
+--                                                                          --
+--           Copyright (C) 1997-1998 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 is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with System;                  use System;
+with System.Storage_Elements; use System.Storage_Elements;
+
+package body GNAT.Debug_Utilities is
+
+   --------------------------
+   -- Image (address case) --
+   --------------------------
+
+   function Image (A : Address) return String is
+      S : String (1 .. Address_Image_Length);
+      P : Natural := S'Last - 1;
+      N : Integer_Address := To_Integer (A);
+      U : Natural := 0;
+
+      H : array (Integer range 0 .. 15) of Character := "0123456789ABCDEF";
+
+   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;
+
+   -----------
+   -- Value --
+   -----------
+
+   function Value (S : String) return System.Address is
+      N : constant Integer_Address := Integer_Address'Value (S);
+
+   begin
+      return To_Address (N);
+   end Value;
+
+end GNAT.Debug_Utilities;