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------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M . S E Q U E N T I A L _ I O --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This package contains the declaration of the control block used for
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-- Sequential_IO. This must be declared at the outer library level. It also
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-- contains code that is shared between instances of Sequential_IO.
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with System.File_Control_Block;
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with Ada.Streams;
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package System.Sequential_IO is
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package FCB renames System.File_Control_Block;
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type Sequential_AFCB is new FCB.AFCB with null record;
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-- No additional fields required for Sequential_IO
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function AFCB_Allocate
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(Control_Block : Sequential_AFCB) return FCB.AFCB_Ptr;
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procedure AFCB_Close (File : not null access Sequential_AFCB);
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procedure AFCB_Free (File : not null access Sequential_AFCB);
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procedure Read
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(File : in out Sequential_AFCB;
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Item : out Ada.Streams.Stream_Element_Array;
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Last : out Ada.Streams.Stream_Element_Offset);
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-- Required overriding of Read, not actually used for Sequential_IO
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procedure Write
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(File : in out Sequential_AFCB;
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Item : Ada.Streams.Stream_Element_Array);
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-- Required overriding of Write, not actually used for Sequential_IO
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type File_Type is access all Sequential_AFCB;
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-- File_Type in individual instantiations is derived from this type
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procedure Create
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(File : in out File_Type;
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Mode : FCB.File_Mode := FCB.Out_File;
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Name : String := "";
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Form : String := "");
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procedure Open
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(File : in out File_Type;
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Mode : FCB.File_Mode;
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Name : String;
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Form : String := "");
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end System.Sequential_IO;
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