New Language: Ada

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

1 files changed, 105 insertions, 0 deletions

diff --git a/gcc/ada/i-cstrin.ads b/gcc/ada/i-cstrin.ads
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                 I N T E R F A C E S . C . S T R I N G S                  --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.8 $
+--                                                                          --
+--          Copyright (C) 1993-2000 Free Software Foundation, Inc.          --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- 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). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with System.Storage_Elements;
+
+package Interfaces.C.Strings is
+pragma Preelaborate (Strings);
+
+   type char_array_access is access all char_array;
+
+   type chars_ptr is private;
+
+   type chars_ptr_array is array (size_t range <>) of chars_ptr;
+
+   Null_Ptr : constant chars_ptr;
+
+   function To_Chars_Ptr
+     (Item      : in char_array_access;
+      Nul_Check : in Boolean := False)
+      return      chars_ptr;
+
+   function New_Char_Array (Chars : in char_array) return chars_ptr;
+
+   function New_String (Str : in String) return chars_ptr;
+
+   procedure Free (Item : in out chars_ptr);
+
+   Dereference_Error : exception;
+
+   function Value (Item : in chars_ptr) return char_array;
+
+   function Value
+     (Item   : in chars_ptr;
+      Length : in size_t)
+      return   char_array;
+
+   function Value (Item : in chars_ptr) return String;
+
+   function Value
+     (Item   : in chars_ptr;
+      Length : in size_t)
+      return   String;
+
+   function Strlen (Item : in chars_ptr) return size_t;
+
+   procedure Update
+     (Item   : in chars_ptr;
+      Offset : in size_t;
+      Chars  : in char_array;
+      Check  : Boolean := True);
+
+   procedure Update
+     (Item   : in chars_ptr;
+      Offset : in size_t;
+      Str    : in String;
+      Check  : in Boolean := True);
+
+   Update_Error : exception;
+
+private
+   type chars_ptr is new System.Storage_Elements.Integer_Address;
+
+   Null_Ptr : constant chars_ptr := 0;
+   --  A little cleaner might be To_Integer (System.Null_Address) but this is
+   --  non-preelaborable, and in fact we jolly well know this value is zero.
+   --  Indeed, given the C interface nature, it is probably more correct to
+   --  write zero here (even if Null_Address were non-zero).
+
+end Interfaces.C.Strings;