A.8.4 Обобщённый пакет Direct_IO

with Ada.IO_Exceptions;
generic
type Element_Type is private;
package Ada.Direct_IO
with Global => in out synchronized is

type File_Type is limited private;

type File_Mode is (In_File, Inout_File, Out_File);
type Count is range 0 .. определяется реализацией;
subtype Positive_Count is Count range 1 .. Count'Last;

-- Управление файлами

procedure Create(File : in out File_Type;
Mode : in File_Mode := Inout_File;
Name : in String := "";
Form : in String := "");

procedure Open (File : in out File_Type;
Mode : in File_Mode;
Name : in String;
Form : in String := "");

procedure Close (File : in out File_Type);
procedure Delete(File : in out File_Type);
procedure Reset (File : in out File_Type; Mode : in File_Mode);
procedure Reset (File : in out File_Type);

function Mode (File : in File_Type) return File_Mode;
function Name (File : in File_Type) return String;
function Form (File : in File_Type) return String;

function Is_Open(File : in File_Type) return Boolean;

procedure Flush (File : in File_Type)
with Global => overriding in out File;

-- Операции ввода-вывода

procedure Read (File : in File_Type; Item : out Element_Type;
From : in Positive_Count)
with Global => overriding in out File;
procedure Read (File : in File_Type; Item : out Element_Type)
with Global => overriding in out File;

procedure Write(File : in File_Type; Item : in Element_Type;
To : in Positive_Count)
with Global => overriding in out File;
procedure Write(File : in File_Type; Item : in Element_Type)
with Global => overriding in out File;

procedure Set_Index(File : in File_Type; To : in Positive_Count)
with Global => overriding in out File;

function Index(File : in File_Type) return Positive_Count;
function Size (File : in File_Type) return Count;

function End_Of_File(File : in File_Type) return Boolean;

-- Исключение

Status_Error : exception renames IO_Exceptions.Status_Error;
Mode_Error : exception renames IO_Exceptions.Mode_Error;
Name_Error : exception renames IO_Exceptions.Name_Error;
Use_Error : exception renames IO_Exceptions.Use_Error;
Device_Error : exception renames IO_Exceptions.Device_Error;
End_Error : exception renames IO_Exceptions.End_Error;
Data_Error : exception renames IO_Exceptions.Data_Error;

package Wide_File_Names is

-- Управление файлами

procedure Create(File : in out File_Type;
Mode : in File_Mode := Inout_File;
Name : in Wide_String := "";
Form : in Wide_String := "");

procedure Open (File : in out File_Type;
Mode : in File_Mode;
Name : in Wide_String;
Form : in Wide_String := "");

function Name (File : in File_Type) return Wide_String;

function Form (File : in File_Type) return Wide_String;

end Wide_File_Names;

package Wide_Wide_File_Names is

-- Управление файлами

procedure Create(File : in out File_Type;
Mode : in File_Mode := Inout_File;
Name : in Wide_Wide_String := "";
Form : in Wide_Wide_String := "");

procedure Open (File : in out File_Type;
Mode : in File_Mode;
Name : in Wide_Wide_String;
Form : in Wide_Wide_String := "");

function Name (File : in File_Type) return Wide_Wide_String;

function Form (File : in File_Type) return Wide_Wide_String;

end Wide_Wide_File_Names;

private
... -- не определено языком
end Ada.Direct_IO;