------------------------------------------------------------------------------ -- -- -- GNAT RUNTIME COMPONENTS -- -- -- -- S Y S T E M . S E Q U E N T I A L _ I O -- -- -- -- S p e c -- -- -- -- -- -- Copyright (C) 1992,1993,1994 Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 2, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING. If not, write -- -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package contains the declaration of the control block used for -- Seqential_IO. This must be declared at the outer library level. It also -- contains code that is shared between instances of Sequential_IO. with System.File_Control_Block; with Ada.Streams; package System.Sequential_IO is package FCB renames System.File_Control_Block; type Sequential_AFCB is new FCB.AFCB with null record; -- No additional fields required for Sequential_IO function AFCB_Allocate (Control_Block : Sequential_AFCB) return FCB.AFCB_Ptr; procedure AFCB_Close (File : access Sequential_AFCB); procedure AFCB_Free (File : access Sequential_AFCB); procedure Read (File : in out Sequential_AFCB; Item : out Ada.Streams.Stream_Element_Array; Last : out Ada.Streams.Stream_Element_Offset); -- Required overriding of Read, not actually used for Sequential_IO procedure Write (File : in out Sequential_AFCB; Item : in Ada.Streams.Stream_Element_Array); -- Required overriding of Write, not actually used for Sequential_IO type File_Type is access all Sequential_AFCB; -- File_Type in individual instantiations is derived from this type procedure Create (File : in out File_Type; Mode : in FCB.File_Mode := FCB.Out_File; Name : in String := ""; Form : in String := ""); procedure Open (File : in out File_Type; Mode : in FCB.File_Mode; Name : in String; Form : in String := ""); end System.Sequential_IO;