RE: Setting the lua environment
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- Subject: RE: Setting the lua environment
- From: "Josh Martel" <jmartel@...>
- Date: 2005年6月28日 18:23:53 -0500
Hi :)
I've never used luabind, but it seems like you'd want to pass the data
as parameters to a function rather than use globals. Barring that,
couldn't you track the invocation parameters in a stack?
(My Lua is a bit rusty so forgive me if I mess up keywords and syntax)
For example, you could run functions before and after running the
process script that might do something like this:
function BeforeProcess()
scriptRecursionDepth = scriptRecursionDepth + 1
ParameterStack[ scriptRecursionDepth ] = { InputPath, InputFile }
end
function AfterProcess()
ParameterStack[ scriptRecursionDepth ] = nil
scriptRecursionDepth = scriptRecursionDepth - 1
if scriptRecursionDepth > 0 then
InputPath, InputFile = ParameterStack[ scriptRecursionDepth ]
else
InputPath = nil
InputFile = nil
end
end
And of course make sure that scriptRecursionDepth is initialized to 0,
etc. This is not the most efficient/clean way but I think it would work
and is fairly straightforward.
-Josh
-----Original Message-----
From: lua-bounces@bazar2.conectiva.com.br
[mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of Martin Slater
Sent: Tuesday, June 28, 2005 5:32 PM
To: Lua list
Subject: Re: Setting the lua environment
Richard Ranft wrote:
>Is there some way to accomodate this from your script manager on the
C++
>side? If you use an object for each instance of the script in your
manager
>you could keep what info you needed with each script object, and pass
on
>what the next object will need to it when it is instantiated. I think
this
>would work and it would avoid stomping on the global environment.
>
>Just a thought... I don't have many of them.
>
>Rich
>
>
Thanks for that one then;) Unfotuanetly isn't really possible, the whole
thing is based on dll's which bind there functions on initialisation and
its the script which manages everything from there, I could maybe keep a
global stack c side so every call of the convert function it overwrites
and restores the globals on exit, in fact this may be a lot simpler than
trying to figure out the rather sparsely document lua_setfenv and
accompanying code needed.
Cheers
Martin