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From: Christoph Grein <christoph.grein@eurocopter.com>
Newsgroups: comp.lang.ada
Subject: Re: Direct IO Help needed
Date: Wed, 27 Feb 2002 13:23:43 +0100 (MET)
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Date: 2002-02-27T13:23:43+01:00

> with direct_io;
> 
> generic 
> 	type item is private;
> 
> package dfs is
> 	package dfs_pkg is new direct_io(item);
>         use dfs_pkg;
> 
>   procedure switch_file_lines(source_file: in string;
>                               line1: integer; line2:integer);
> 
>   procedure swap_head_tail(source_file: in string; lines: integer);
> 
>   procedure get_middle(source_file: in string; found: out item);
> 
> end dfs;
);
> 
> end dfs;

with dfs;

procedure Thus is

  type XXX is any definite non-limited type;

  package XXX_dfs is new dfs (XXX);

  The_Answer: Positive;
  pragma Import (Convention => Ada, Entity => The_Answer,
                 External_Name => "A_complicated_experiment_performed_by_Mice");

begin

  XXX_dfs.switch_file_lines (source_file => "Your_Choice",
                             line_1 => 42,
                             line_2 => The_Answer);
end Thus;