- Interface confusion, was BB 1.6-rc5 Feedback / Bug

From: [at]} <HvL>
Date: Wed, 09 May 2007 16:50:14 +0200

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Hi Werner,

On Wed, 09 May 2007 15:10:18 +0200, Werner Braun <wb{([at]})nowhere.xy

> Necessary: no
> feasable: depends

Matter of taste.

> it would give information about default implementations in T0, T1 ord T2

What is 'default implementation'? see below [1]

> I just hat "Method-Tables" in my mind ... which of course are not
> to be expressed by the Complete Interface.

Does this mean, the interface (compiler) should give information of the
semantic contents? I can't imagine how to do that.

[1] Have a special look at module OopUpcallC of my second example.
The comment before the first output listing says:
When compiled as seen above this Module's output shows that on the call of
method DoExt2ofA in the Do method of module OopUpcallA the
method-implementation in module OopUpcallC is executed.
Because of this overiding extension of the original method implementation
in module OopUpcallB the procedure pointer from method DoExt2ofA in module
OopUpcallA points to the overriding method in module OopUpcallC not to the
original one in module OopUpcallB.

I'd like to know how the compiler can guess at compile time a module's
runtime change of behaviour - like in this example - in the presence (or
absence) of overriding procedures.

Regards

Harro

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Received on Wed May 09 2007 - 16:50:14 UTC