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Navigating the model tree with xtend [message #778192]

Wed, 11 January 2012 15:25

Stefan Missing name

Messages: 13
Registered: May 2010

Junior Member

Hi,

I have to convert an Xtext code generator from version 1 to 2 and I'm having some conversion issues. It's been a while since I last used Xtext.

With my model looking something like

MyModel:
(variables += MyVariable)*;

MyVariable:
value = MyValue;

I used to write "model.variables.value" to get the values of all variables in the model. However, this does not seem to work anymore.
Do I need to iterate over the variables, like

«FOR v:variables»
«v.value»
«ENDFOR»

to access the variable values? This seems rather cumbersome, even more so if value were to be another list of subvalues.
On a related note, am I right that the FOREACH statement has vanished as well?

Thanks

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Re: Navigating the model tree with xtend [message #778204 is a reply to message #778192]

Wed, 11 January 2012 16:32

Meinte Boersma

Messages: 434
Registered: July 2009
Location: Leiden, Netherlands

Senior Member

Have a look at the following blog post and its comments: http://dslmeinte.wordpress.com/2011/09/19/using-xtexts-xtend2-language/
In short: "model.variables.map[value]" should do the trick.

Xtext blogs: executable models...again? | workshop material | custom scoping with Xtend

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