A.8.1 The Generic Package Sequential_IO
Static Semantics
The generic library
package Sequential_IO has the following declaration:
with Ada.IO_Exceptions;
generic
type Element_Type(<>)
is private;
package Ada.Sequential_IO
is
type File_Type
is limited private;
type File_Mode
is (In_File, Out_File, Append_File);
-- File management
procedure Create(File :
in out File_Type;
Mode :
in File_Mode := Out_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);
-- Input and output operations
procedure Read (File :
in File_Type; Item :
out Element_Type);
procedure Write (File :
in File_Type; Item :
in Element_Type);
function End_Of_File(File :
in File_Type)
return Boolean;
-- Exceptions
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;
private
... -- not specified by the language
end Ada.Sequential_IO;
The type File_Type needs finalization
(see
7.6) in every instantiation of Sequential_IO.
Ada 2005 and 2012 Editions sponsored in part by Ada-Europe
