107 lines
4.6 KiB
Ada
107 lines
4.6 KiB
Ada
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------------------------------------------------------------------------------
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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) 1993-2014, 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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-- When deallocation is prohibited (eg: cert runtimes) this routine
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-- will raise Program_Error
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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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