Re: oo programing question

[Martin Krischik <krischik@users.sourceforge.net>]

shoko wrote:

> here is my generic package:
> generic
>    type Element_Type is private;
> 
>    package queue is
>      type Queue  is abstract tagged private;
>      
>      type newqueue is new Queue ;<-- how to create new queue type?

   type New_Queue is tagged new Queue with private ;
      
>      procedure Init( Q: in out Queue) is abstract;

Just a thought:

function New_Queue return Queue;
 
>      private
>          type Queue is  abstract tagged
>            record
>               value:Element_Type;
>            end record;
>    
>    end queue;
> 
> i need to create a new abstract type(newqueue) that will inherit from
> Queue.
> 
>   
> then need to put the new type(newqueue) in the same generic Queue package,
> and to add a new method to the new abstract type.
> 
> the reason that the new abstract type(newqueue) should be in the same
> package is: i have a type that inherit from Queue
> and now i need a new type that inherit from the new abstract type
> (newqueue) and will be the same as the one that inherit from Queue.

This might still be possible with a child package.

With Regards

Martin


-- 
mailto://krischik@users.sourceforge.net
http://adacl.sourceforge.net