1 ------------------------------------------------------------------------------
3 -- GNAT RUNTIME COMPONENTS --
5 -- S Y S T E M . S E Q U E N T I A L _ I O --
10 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNAT was originally developed by the GNAT team at New York University. --
31 -- Extensive contributions were provided by Ada Core Technologies Inc. --
33 ------------------------------------------------------------------------------
36 with Unchecked_Deallocation;
38 package body System.Sequential_IO is
40 subtype AP is FCB.AFCB_Ptr;
42 package FIO renames System.File_IO;
48 function AFCB_Allocate
49 (Control_Block : Sequential_AFCB)
52 pragma Warnings (Off, Control_Block);
55 return new Sequential_AFCB;
62 -- No special processing required for Sequential_IO close
64 procedure AFCB_Close (File : access Sequential_AFCB) is
65 pragma Warnings (Off, File);
75 procedure AFCB_Free (File : access Sequential_AFCB) is
77 type FCB_Ptr is access all Sequential_AFCB;
79 FT : FCB_Ptr := FCB_Ptr (File);
82 Unchecked_Deallocation (Sequential_AFCB, FCB_Ptr);
93 (File : in out File_Type;
94 Mode : in FCB.File_Mode := FCB.Out_File;
95 Name : in String := "";
96 Form : in String := "")
98 File_Control_Block : Sequential_AFCB;
101 FIO.Open (File_Ptr => AP (File),
102 Dummy_FCB => File_Control_Block,
116 (File : in out File_Type;
117 Mode : in FCB.File_Mode;
119 Form : in String := "")
121 File_Control_Block : Sequential_AFCB;
124 FIO.Open (File_Ptr => AP (File),
125 Dummy_FCB => File_Control_Block,
138 -- Not used, since Sequential_IO files are not used as streams
141 (File : in out Sequential_AFCB;
142 Item : out Ada.Streams.Stream_Element_Array;
143 Last : out Ada.Streams.Stream_Element_Offset)
153 -- Not used, since Sequential_IO files are not used as streams
156 (File : in out Sequential_AFCB;
157 Item : in Ada.Streams.Stream_Element_Array)
163 end System.Sequential_IO;