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Another scoping Problem [message #1077289]

Thu, 01 August 2013 13:49

Chris Hansen

Messages: 20
Registered: July 2013

Junior Member

Hello,

I have a Problem using the Scoping.
My formerly created DSL looked like:

Filterchain:  
	"filterchain" name = ID "{"
	inport += FCInport*
	outport += FCOutport*
	("use" use += FCUseFilter)+
	"}"
;

I had written a Scoping-Method:

return Scopes.scopeFor(ctx.getUfcf().getType().getUse());

,
where getUse() returned all FCUseFilter Elements.

Now I've changed the DSL a little bit:

Filterchain:  
	"filterchain" name = ID "{"
	inport += FCInport*
	outport += FCOutport*
	("use" use += FilterchainPart)+
	"}"
;

FilterchainPart:
	"filter" filter = FCUseFilter
;

This is necessary because "use" shall be able to contain other Objects later on.

But now I can't create the Scioping-Method.
My Idea was :

return Scopes.scopeFor(ctx.getUfcf().getType().getUse().filter([ t | t.filter != null)

The problem there is that I don't want to receive the "FilterchainPart" but the FCUseFilter, contained in FilterchainPart.
But I don't know how to access them because "getUse()" (of course) returns an EList<FilterchainPart>.

How do I get the FCUseFilter out there?

Thanks,
Chris

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Re: Another scoping Problem [message #1080093 is a reply to message #1077289]

Mon, 05 August 2013 13:06

Chris Hansen

Messages: 20
Registered: July 2013

Junior Member

No ideas?

I've tried to build up an EList<FilterchainPart> by Hand, the Code compiles but doesn't cause any Action.

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Re: Another scoping Problem [message #1080870 is a reply to message #1080093]

Tue, 06 August 2013 13:23

Jan Koehnlein

Messages: 760
Registered: July 2009
Location: Hamburg

Senior Member

Use map[] to execute a lambda on all elements of an iterable:

return Scopes.scopeFor(ctx
.getUfcf()
.getType()
.getUse()
.map[filter]
.filterNull

Am 05.08.13 15:06, schrieb Chris Hansen:
> No ideas?
>
> I've tried to build up an EList<FilterchainPart> by Hand, the Code
> compiles but doesn't cause any Action.

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