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Cross-referencing to non-Xtext elements [message #1690986]

Wed, 01 April 2015 08:39

Eclipse User

Hi!

I've been away from Xtext for a couple of years now and I have a feeling that I saw the answer to this question somewhere, but can't find it now. I hope someone can point me right or answer.

I have a DSL used to generate C code and it contains references to other C code. If I want to navigate between the DSL and C, I need to either
- fill the Xtext index with elements from the C code (locating the C elements off-line)
- catch "unresolved references" and ask locate the element when needed

What would be the right way? If the first option, then how do I let the index know about the external elements?

Thanks in advance!

best regards,
Vlad

Re: Cross-referencing to non-Xtext elements [message #1694129 is a reply to message #1690986]

Thu, 30 April 2015 14:09

Eclipse User

Hi Vlad,

I would go with the first suggestion. We do exactly that for Java.
In order to put non-xtext languages on the scope (into the index) you need to redefine their signatures in terms of EMF elements and then register a ResourceServiceProvider that will transform the original representation into an EMF one. You'll likely also need a special resource implementation and URI scheme.
It is best to look at the org.eclipse.xtext.common.types bundle to see how we do that for Java.

Cheers,
Sven

Re: Cross-referencing to non-Xtext elements [message #1694133 is a reply to message #1694129]

Thu, 30 April 2015 15:26

Eclipse User

Aha, I see. Thanks a lot!
/Vlad

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