Re: [Jscheme-user] Multiple Independent JSchemes

[Timothy J. H. <tim...@ma...>]

On May 22, 2004, at 2:16 PM, matthew grisius wrote:
> Ok,  a 'dynamic environment' is shared between two REPLs. The two 
> separate Evaluators are able to have their own input, output, and 
> error ports:
>
> (.input$ ev1 (my-input-port my-window-1))
> (.output$ ev1 (my-output-port my-window-1))
> (.error$ ev1 (my-error-port my-window-1))
>
> (.input$ ev2 (my-input-port my-window-2))
> (.output$ ev2 (my-output-port my-window-2))
> (.error$ ev2 (my-error-port my-window-2))
>
> Does that make more sense and do you see any problems with that 
> approach? Thanks.

It looks OK.
Your approach works with the interact.Interactor class that Ken 
Anderson built.
In the code below we create three interaction windows. The first two 
share an
INTERACTION_ENVIRONMENT and the third has an independent one.

tim% java jscheme.REPL
JScheme 7.0 5/19/04 http://jscheme.sourceforge.net
 > (define z1 (jscheme.JScheme.))
jscheme.JScheme@1c0d60

 > (define z2 (jscheme.JScheme.))
jscheme.JScheme@9bad5a

 > (define I1 (interact.Interactor. "" z1))
2004-05-22 15:12:09.130 java[5131] _initWithWindowNumber: error 
creating graphics ctxt object for ctxt:99623, window:1151303680
interact.Interactor@34151f

 > (.INTERACTION_ENVIRONMENT$ (.getEvaluator z2) 
(.INTERACTION_ENVIRONMENT$ (.getEvaluator z1)))
jsint.DynamicEnvironment@ff6de1

 > (define I2 (interact.Interactor. "" z2))
interact.Interactor@c5f20f

 > (define z3 (jscheme.JScheme.))
jscheme.JScheme@c4a2d3

 > (define I3 (interact.Interactor. "" z3))
interact.Interactor@9f2588

 >

We may want to add some support in the jscheme package for doing this 
kind of manipulation,
e.g.      jscheme.SchemeEvaluator    could have a 
.getInteractionEnvironment method and a setInteractionEnvironment 
method

---Tim---