Ironruby core - Nov 2007 - Hosting the DLR and passing data to scripts

I''ve been playing with the DLR hosting interfaces and running ruby code
this
way; it''s a really, really nifty feature that I''m already
loving!

I can see a lot of cool scenarios this will be useful, such as providing a
good way to provide custom scripting support on applications and so on.

I have had some problems, however, in particularly trying to connect the
host with the scripts being executed inside the DLR. In my infinite
ignorance, I assume you would be able to use Script.SetVariable() (or one of
the longer, but equal alternatives to it) to introduce global variables into
the scope before executing or evaluating a script, but for the life of me I
can''t seem to get it to work.

Am I just completely of the mark? or is it just not working at this time?

-- 
Tomas Restrepo
http://www.winterdom.com/weblog/
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We?re going to improve hosting API in DLR next month ? there will be several
major changes and many minor ones. IronRuby will also plug better to DLR due to
these changes. For the time being, use only globals (via
RubyEngine.CurrentEngine.ExecutionContext.GlobalVariables dictionary) for
passing data from and to Ruby scripts.

Tomas

From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Tomas Restrepo
Sent: Wednesday, November 07, 2007 3:44 PM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] Hosting the DLR and passing data to scripts

I''ve been playing with the DLR hosting interfaces and running ruby code
this way; it''s a really, really nifty feature that I''m already
loving!

I can see a lot of cool scenarios this will be useful, such as providing a good
way to provide custom scripting support on applications and so on.

I have had some problems, however, in particularly trying to connect the host
with the scripts being executed inside the DLR. In my infinite ignorance, I
assume you would be able to use Script.SetVariable() (or one of the longer, but
equal alternatives to it) to introduce global variables into the scope before
executing or evaluating a script, but for the life of me I can''t seem
to get it to work.

Am I just completely of the mark? or is it just not working at this time?

--
Tomas Restrepo
http://www.winterdom.com/weblog/
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Hi Tomas,

<<
We?re going to improve hosting API in DLR next month ? there will be several
major changes and many minor ones. IronRuby will also plug better to DLR due to
these changes. For the time being, use only globals (via
RubyEngine.CurrentEngine.ExecutionContext.GlobalVariables dictionary) for
passing data from and to Ruby scripts. 
>> 
Thanks for the answer; I''ll keep my eyes on the DLR updates.

I did try using the GlobalVariables dictionary and that did work fine. Any
particular reason why the global variables are stored in the GlobalVariables
dictionary instead of the GlobalScope dictionary? (just trying to understand
better how it works)


Tomas Restrepo
http://www.winterdom.com/weblog/