| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- G N A T V S N -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- -- |
| -- Copyright (C) 2002 Free Software Foundation, 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. -- |
| -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| package body Gnatvsn is |
| |
| -- Import the string constant defined in the (language-independent) |
| -- source file version.c. |
| |
| -- The size is a lie; we have no way of writing the truth (the size |
| -- is variable and depends on the actual text of the constant). |
| |
| -- FIXME: It should be possible to declare this to be a constant, but |
| -- that is rejected by the compiler ("invalid context for deferred |
| -- constant declaration"). Per Ada95 this constraint only applies to |
| -- deferred constants completed by a full constant declaration, not |
| -- deferred constants completed by a pragma Import. |
| |
| Version_String : array (0 .. Ver_Len_Max) of aliased Character; |
| pragma Import (C, Version_String, "version_string"); |
| |
| -- Convert that string constant to an Ada String and return it. |
| -- This is essentially the same as the To_Ada routine in |
| -- Interfaces.C; that package is not linked into gnat1 so |
| -- we cannot use it. |
| |
| function Gnat_Version_String return String |
| is |
| Count : Natural := 0; |
| |
| begin |
| loop |
| if Version_String (Count) = Character'First then |
| exit; |
| else |
| Count := Count + 1; |
| end if; |
| end loop; |
| |
| declare |
| R : String (1 .. Count); |
| |
| begin |
| for J in R'Range loop |
| R (J) := Version_String (J - 1); |
| end loop; |
| |
| return R; |
| end; |
| end Gnat_Version_String; |
| |
| end Gnatvsn; |
