[IronPython] creating a scope for embedded scripts to run in
antont at kyperjokki.fi
Tue Nov 13 14:50:03 CET 2007
I've been struggling a lot with trying to create a scope / namespace /
environment / something for embedded scripts to run in.
Putting in instances with (in 2.0) SetVariable is fine, but so far I've
not managed to put classes there (I wish classes were objects like in
Python so things would just work .. in fact I'm considering porting this
script server thing other people have earlier started as c# to ironpy to
perhaps get rid of these probs :)
So I hope there is either something nice in the new Microsoft.Scripting
API that I've not found yet, or something in the .net reflection system
that am overlooking. Have tried this kind of things:
System.Type Timer = new
.. but of course that just puts the (useless?) reflection class to the
namespace, not the actual class that could be constructed? Perhaps that
typeinfo-type can be used to instanciate with some Invoke thing, but
obviously I don't want to expose that to scripters. Dunno if I could hide
that in some wrapper funcs implemented on the py side.
Previously I've used this kind of technique to expose some modules for
completely trusted scripts: (this from 1.1, in a project where we used
Mogre - we are not using it in this project)
Mogre.Timer t = new Mogre.Timer(); //just to get the mogre module
python.LoadAssembly(t.GetType().Assembly); //gives 'Mogre'
so after that in 1.1 'import Mogre' worked in the scripts and that was
but now I'd like to give the scripts Threading.Timer, but not the whole
I've seen the CreateModule etc. methods in ipy, and also now the new
CreateScope thing in Microsoft.Scripting, but did not find any
documentation on that - and anyway the same problem seems to be there that
I can't put references to classes as values in the scopes.
Should I indeed try porting the whole thing to IronPython to perhaps get
rid of this prob., or is there some nice way to expose assemblies or parts
of them? Sorry if this is FAQ stuff but I did not find this in any of the
embedding examples etc.
patiently looking forward to be shown the right path,
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