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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME 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) 1992-2006, 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, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, 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 : 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 : FCB.File_Mode := FCB.Out_File;
+ Name : String := "";
+ Form : String := "");
+
+ procedure Open
+ (File : in out File_Type;
+ Mode : FCB.File_Mode;
+ Name : String;
+ Form : String := "");
+
+end System.Sequential_IO;