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From: Adam Beneschan <adam@irvine.com>
Newsgroups: comp.lang.ada
Subject: Re: Cannot implement with an instantiation?!
Date: Thu, 25 Oct 2007 10:41:46 -0700
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Date: 2007-10-25T10:41:46-07:00
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On Oct 25, 10:34 am, amado.al...@gmail.com wrote:
> Ada is being very bad to me. She does not let me instantiate a generic
> procedure Generic_Connect nested in a generic package body
> Generic_Graphs. Is she in any reason? And how do I make things right?

Renaming-as-body.  See below.


> Thanks a lot.

You're welcome!

> generic
>    ...
> package Generic_Graphs is
>    ...
>    procedure Connect
>      (Digraph : in out Digraph_Type;
>       From, To : Node_Array);
>    ...
> end;
>
> package body Generic_Graphs is
>    ...
>
>    generic
>       ...
>    procedure Generic_Connect
>      (Digraph : in out Digraph_Type;
>       From, To : Node_Array);
>
>    procedure Generic_Connect
>      (Digraph : in out Digraph_Type;
>       From, To : Node_Array) is
>    begin
>       ...
>    end;
>
>    procedure Connect
>      (Digraph : in out Digraph_Type; -- <== GNAT complains here saying
> that a
>       From, To : Node_Array)         -- formal part is not allowed in
> an instantiation
>    is new Generic_Connect (True);

    procedure Generic_Connect_Inst is new Generic_Connect (True);
    procedure Connect (Digraph : in out Digraph_Type;
                       From, To : Node_Array)
        renames Generic_Connect_Inst;

                             -- Adam