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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                 I N T E R F A C E S . C . S T R I N G S                  --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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--          Copyright (C) 1993-2010, Free Software Foundation, Inc.         --
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--                                                                          --
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-- This specification is derived from the Ada Reference Manual for use with --
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-- GNAT. The copyright notice above, and the license provisions that follow --
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-- apply solely to the  contents of the part following the private keyword. --
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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 3,  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.                                     --
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--                                                                          --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception,   --
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-- version 3.1, as published by the Free Software Foundation.               --
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--                                                                          --
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-- You should have received a copy of the GNU General Public License and    --
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-- a copy of the GCC Runtime Library Exception along with this program;     --
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-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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-- <http://www.gnu.org/licenses/>.                                          --
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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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package Interfaces.C.Strings is
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   pragma Preelaborate;
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   type char_array_access is access all char_array;
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   for char_array_access'Size use System.Parameters.ptr_bits;
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   pragma No_Strict_Aliasing (char_array_access);
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   --  Since this type is used for external interfacing, with the pointer
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   --  coming from who knows where, it seems a good idea to turn off any
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   --  strict aliasing assumptions for this type.
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   type chars_ptr is private;
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   pragma Preelaborable_Initialization (chars_ptr);
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   type chars_ptr_array is array (size_t range <>) of aliased chars_ptr;
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   Null_Ptr : constant chars_ptr;
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   function To_Chars_Ptr
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     (Item      : char_array_access;
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      Nul_Check : Boolean := False) return chars_ptr;
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   function New_Char_Array (Chars : char_array) return chars_ptr;
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   function New_String (Str : String) return chars_ptr;
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   procedure Free (Item : in out chars_ptr);
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   Dereference_Error : exception;
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   function Value (Item : chars_ptr) return char_array;
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   function Value
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     (Item   : chars_ptr;
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      Length : size_t) return char_array;
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   function Value (Item : chars_ptr) return String;
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   function Value
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     (Item   : chars_ptr;
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      Length : size_t) return String;
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   function Strlen (Item : chars_ptr) return size_t;
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   procedure Update
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     (Item   : chars_ptr;
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      Offset : size_t;
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      Chars  : char_array;
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      Check  : Boolean := True);
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   procedure Update
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     (Item   : chars_ptr;
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      Offset : size_t;
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      Str    : String;
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      Check  : Boolean := True);
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   Update_Error : exception;
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private
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   type chars_ptr is access all Character;
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   for chars_ptr'Size use System.Parameters.ptr_bits;
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   pragma No_Strict_Aliasing (chars_ptr);
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   --  Since this type is used for external interfacing, with the pointer
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   --  coming from who knows where, it seems a good idea to turn off any
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   --  strict aliasing assumptions for this type.
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   Null_Ptr : constant chars_ptr := null;
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end Interfaces.C.Strings;

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