Re: Child packages question

[James Ross <rem.jr@rem.webross.com>]

sk wrote:

>Hi,

Thanks sk!  and others.  I ditto the nice example comment.  That is
precisely the answer.  When I first looked at it, I thought hey wait a
minute, he's done nothing special there... Then I noticed the missing
piece of the puzzle:   starting the child package with "private
package".  I was certain there was a way, and was almost certain it
was private ... something, but I thought some declaration either in
the spec or body of Car... 

Oh yeah, I like Ada a bit more now.

If I am not mistaken, it appears that Ada 95 Problem Solving and
Program Design (2and Edition) never mentions it. 
JR
  
>-----------------------------------------------------
>-- file1 : car.ads
>package Car is
>
>    procedure Accelerate;
>
>end Car;
>
>-----------------------------------------------------
>-- file2 : car.ads
>with Car.Engine;
>
>package body Car is 
>
>    procedure Accelerate is
>    begin
>        Car.Engine.Pump_More_Gas;
>    end Accelerate;
>
>end Car;  
>
>-----------------------------------------------------
>-- file2 : car-engine.ads
>private package Car.Engine is
>
>    procedure Pump_More_Gas;
>
>end Car.Engine;
>
>-----------------------------------------------------
>-- file2 : car-engine.adb
>package body Car.Engine is
>
>    procedure Pump_More_Gas is
>    begin
>        null;
>    end Pump_More_Gas;
>
>end Car.Engine;
>
>-----------------------------------------------------
>-- file2 : Mario_Andretti.adb
>with Car;
>--with Car.Engine;
>
>procedure Mario_Andretti is
>
>begin
>    Car.Accelerate;
>    
>--    Car.Engine.Accelerate;
>
>end Mario_Andretti;
>-----------------------------------------------------
>
>Try uncommenting :
>"with Car.Engine" 
>"Car.Engine.Accelerate"
>
>Compiler should complain :-)