[myhdl-list] Proposal: SignalType symbol

[Jan D. <ja...@ja...>]

In the development branch 'Signal' has become a factory
function instead of a class.

I had complaints about this before, in particular from
Chris Felton. To test whether something is a Signal
instance, it currently means you have to check whether
it is a 'myhdl._Signal' (a "hidden" symbol) instead of
a 'Signal' as previously. Not really nice, a user should
never have to refer to hidden symbols.

In a project, as a user, I now have a need for this myself,
so ... :-) I want to keep the factory function Signal,
but I propose to define a visible symbol 'SignalType'
for the type. This is in line with Python conventions
for type naming. Then you could do:

    from myhdl import *
    ...
    if isinstance(a, SignalType):
        ...


Any remarks?

Jan

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