[news.eclipse.modeling.tmf] Re: looking for a xtext C/Java like expressi

[Knut Wannheden <knut.wannheden@xxxxxxxxxx>]

Achim,

Achim Demelt wrote:
> Michael,
>
> We're embedding Xtend expressions in our grammar to do that. The major 
> drawback is that the expressions themselves are not captured by grammar 
> rules, but are instead defined within a String literal. So to the user of 
> the language, it looks a bit like this:
>
> define template 'ClassDescription' for ecore::EClass
>  if '!this.isAbstract && this.eAttributes.size() > 0'
>  
>  heading '"EClass " + this.name'
>  body
>   ...
>  end body
> end template

We're also embedding the Xtend expression language in some of our DSLs by 
letting the DSL extend the expression language. As a result the expressions 
don't need to be parsed as simple tokens. Although we have to make sure the 
grammars don't interfere.

> But using Xtend has to nice advantages:
>
> 1) We can reuse the Xtend content assist facility. So at the right places, 
> we just delegate from our Xtext language content assist code to Xtend 
> content assist. Works like a charm.

Interesting. Would you be able to share that code? Although I am not sure it 
would work quite the same in our case.

Regards,

--knut