RE: [vhdl-200x-ft] Question On Type Genericity

Tristan,

> Well, there is also resolution function. However, the may-be
> only possible attribute function for a resolution function is
> 'length. GHDL does not support it, however I don't know
> wether it is a bug or not !

I'd overlooked that case. I'll raise the question in ISAC.

> > My inclination would be not to allow attribute names as actuals for
> > subprogram formals, since I think the expectation is that they be
> > built into the innards of a compiler, rather than being
> implemented as
> > subprograms. If that is the case, then you would need to define a
> > helper function to increment a value and pass that function as the
> > actual.
> However, the same is true for implicit functions such as "+".
> So, this argument doesn't really stand. Furthermore, you are
> making hypothesis on the implementation.

Good point. You'd certainly want to allow implicit functions such as "+"
for predefined types as actuals for formal subprograms. So it probably
makes sense to allow attributes that are functions. I retract my
inclination. Thanks.

Cheers,

PA

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Dr. Peter J. Ashenden                        peter@ashenden.com.au
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