diff options
Diffstat (limited to 'gcc/ada/s-sequio.adb')
| -rw-r--r-- | gcc/ada/s-sequio.adb | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/gcc/ada/s-sequio.adb b/gcc/ada/s-sequio.adb new file mode 100644 index 0000000..87c6d69 --- /dev/null +++ b/gcc/ada/s-sequio.adb @@ -0,0 +1,160 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUNTIME COMPONENTS -- +-- -- +-- S Y S T E M . S E Q U E N T I A L _ I O -- +-- -- +-- B o d y -- +-- -- +-- $Revision: 1.7 $ -- +-- -- +-- Copyright (C) 1992-1998 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. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +with System.File_IO; +with Unchecked_Deallocation; + +package body System.Sequential_IO is + + subtype AP is FCB.AFCB_Ptr; + + package FIO renames System.File_IO; + + ------------------- + -- AFCB_Allocate -- + ------------------- + + function AFCB_Allocate + (Control_Block : Sequential_AFCB) + return FCB.AFCB_Ptr + is + begin + return new Sequential_AFCB; + end AFCB_Allocate; + + ---------------- + -- AFCB_Close -- + ---------------- + + -- No special processing required for Sequential_IO close + + procedure AFCB_Close (File : access Sequential_AFCB) is + begin + null; + end AFCB_Close; + + --------------- + -- AFCB_Free -- + --------------- + + procedure AFCB_Free (File : access Sequential_AFCB) is + + type FCB_Ptr is access all Sequential_AFCB; + + FT : FCB_Ptr := FCB_Ptr (File); + + procedure Free is new + Unchecked_Deallocation (Sequential_AFCB, FCB_Ptr); + + begin + Free (FT); + end AFCB_Free; + + ------------ + -- Create -- + ------------ + + procedure Create + (File : in out File_Type; + Mode : in FCB.File_Mode := FCB.Out_File; + Name : in String := ""; + Form : in String := "") + is + File_Control_Block : Sequential_AFCB; + + begin + FIO.Open (File_Ptr => AP (File), + Dummy_FCB => File_Control_Block, + Mode => Mode, + Name => Name, + Form => Form, + Amethod => 'Q', + Creat => True, + Text => False); + end Create; + + ---------- + -- Open -- + ---------- + + procedure Open + (File : in out File_Type; + Mode : in FCB.File_Mode; + Name : in String; + Form : in String := "") + is + File_Control_Block : Sequential_AFCB; + + begin + FIO.Open (File_Ptr => AP (File), + Dummy_FCB => File_Control_Block, + Mode => Mode, + Name => Name, + Form => Form, + Amethod => 'Q', + Creat => False, + Text => False); + end Open; + + ---------- + -- Read -- + ---------- + + -- Not used, since Sequential_IO files are not used as streams + + procedure Read + (File : in out Sequential_AFCB; + Item : out Ada.Streams.Stream_Element_Array; + Last : out Ada.Streams.Stream_Element_Offset) + is + begin + raise Program_Error; + end Read; + + ----------- + -- Write -- + ----------- + + -- Not used, since Sequential_IO files are not used as streams + + procedure Write + (File : in out Sequential_AFCB; + Item : in Ada.Streams.Stream_Element_Array) + is + begin + raise Program_Error; + end Write; + +end System.Sequential_IO; |