[Cuis-dev] Context in Exception

[Hilaire Fernandes]

Hi,

I will need some help there because this is uncharted territory for me.

When the user executes a faulty Smalltalk sketch, I want to catch the 
exception and present the error in a simplified debugger. To not help, 
the Smalltalk sketch is evaluated in a low priority process, so the GUI 
remain interactive.

What I do is this:

	sketchProcess  :=  [
		(DrGeoSystem  preferences  at:  #advancedDebugger)
			ifTrue:  [Compiler  evaluate:  model]
			ifFalse:  [
				[Compiler  evaluate:  model]
					on:  Exception  
					do:  [:ex  |  |myContext |
						myContext  :=  ex  signalerContext  findContextSuchThat:  [:aContext  |  
							aContext  method  defaultSelector  ==  #DoIt].
					debugger  :=  Debugger  
							openMinimalDebuggingProcess:  sketchProcess  
							context:  myContext.
					self  plugDebugger  ]
			].
	sketchProcess  
		priority:  Processor  userSchedulingPriority  ;
		name:  '[DrGeo] Smalltalk Sketch execution';
		resume.


Sadly, when I present the error with my MinimalDebbugger all the 
variables within the script are nil (see screenshot below). When  
instead I use the standard Debugger with:

     Debugger openProcess: sketchProcess context: myContext label: 'Debug'

the variable values are ok. I tried to mimic the behavior of the regular 
debugger, but I likely miss something.

debug


Thanks

-- 
GNU Dr. Geo
http://gnu.org/s/dr-geo/
http://gnu-drgeo.blogspot.com/
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