Re: Notification of any change to a non-local variable.

[David Morris-Oliveros <david.morrisoliveros@...>]

Maybe i'm wrong but...

If you add __newindex, and get it to store stuff not in the actual _G
but in a hidden _G table, then you can always track access to that
variable. Of course, you would need to make __index also use that hidden
_G, but that can just be a delegator.

I can't think of the implementation details right now, but for me, that
sounds about usable.

// David Morris-Oliveros
// Camera & Lua Coder
// david@teambondi.com



Ron Bessems wrote:
> Question for you all, we need to get a notification every time
> any global variable is modified in lua 5.0.
>
> I've looked at chapter 13.4 (table access meta-methods) but it seems
> that those access methods cannot track if a variable already exists,
> so then a proxy table is used, but then we loose the ability to
> iterate over the table.
>
> Is there some way to go into the Lua Source code to do this? Anything
> that allows us to hook global variable access notifications? We are
> very much locked into Lua 5.0 so sadly can't upgrade to 5.1. I am a
> C/C++ coder so I can work on the lua code if needed, a few pointers
> where to start would be great.
>
> Thanks,
>
> Ron
>
>
>
>