ada_ado_cf105198/src/ado-c.ads

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-----------------------------------------------------------------------
--  ado-c -- Support for driver implementation
--  Copyright (C) 2009, 2010, 2011, 2012, 2018, 2022 Stephane Carrez
--  Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--  SPDX-License-Identifier: Apache-2.0
-----------------------------------------------------------------------

with Interfaces.C;
with Interfaces.C.Strings;
with Ada.Finalization;
with Ada.Unchecked_Conversion;
with System;
package ADO.C is

   type String_Ptr is limited private;

   --  Convert a string to a C string.
   function To_String_Ptr (S : String) return String_Ptr;

   --  Get the C string pointer.
   function To_C (S : String_Ptr) return Interfaces.C.Strings.chars_ptr;

   --  Set the string
   procedure Set_String (S     : in out String_Ptr;
                         Value : in String);

   function To_chars_ptr is
      new Ada.Unchecked_Conversion (System.Address, Interfaces.C.Strings.chars_ptr);

private

   use Interfaces.C;

   type String_Ptr is new Ada.Finalization.Limited_Controlled with record
      Ptr : Strings.chars_ptr := Interfaces.C.Strings.Null_Ptr;
   end record;

   --  Reclaim the storage held by the C string.
   overriding
   procedure Finalize (S : in out String_Ptr);

end ADO.C;