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- ------------------------------------------------------------------------------
- -- --
- -- 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 --
- -- --
- -- $Revision: 1.3 $ --
- -- --
- -- Copyright (c) 1992,1993,1994 NYU, All Rights Reserved --
- -- --
- -- The GNAT library is free software; you can redistribute it and/or modify --
- -- it under terms of the GNU Library General Public License as published by --
- -- the Free Software Foundation; either version 2, or (at your option) any --
- -- later version. The GNAT library is distributed in the hope that it will --
- -- be useful, but WITHOUT ANY WARRANTY; without even the implied warranty --
- -- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
- -- Library General Public License for more details. You should have --
- -- received a copy of the GNU Library General Public License along with --
- -- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
- -- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
- -- --
- ------------------------------------------------------------------------------
-
- -- 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;
-
- 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;
-