> On Oct 18, 2017, at 1:21 PM, Nicolas Cellier
> <[email protected]> wrote:
>
> <snip>
>
> Should isNull be defined as you suggest in ByteArray? If the semantic is
> #isNullPointer, then I don't think so. If it's a more general message, then
> maybe...
>
> What is the class of handle?
It is ByteArray. I agree that ByteArray responding to isNull is weird.
The struct the memory maps is struct { void* data, int flags } so I can work
around this with something like
self data ifNil: [.....]
I have just encountered another problem.
Ben creates a type specification as a class variable to model void*[3]
VoidPointer3 := FFITypeArray ofType: 'void*' size: 3.
which produces the following accessor for data
(FFITypeArray ofType: #FFIVoid size: 3) fromHandle: (handle copyFrom:
OFFSET_DATA to: OFFSET_DATA + 23)
This fails because the native size of void is undefined even though it is a
void* being mapped.
I will continue to see if I can figure out why it generates this spec -
definitely a broken assumption somewhere in here.
-Todd Blanchard
