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Handling terminals without assigned feature, for code generation [message #1791796]

Thu, 05 July 2018 12:31

Habtom Kahsay Gidey

Messages: 1
Registered: December 2017

Junior Member

In my DSL expression, I can use brackets (), like 2*( 3 + (1+2)), which I don't have a defined feature in my grammar, but I want to make use of it in my code generator to convert it, for instance, to squared brackets or so. Would there be a possibility to handle this brackets without assigning them to a feature?

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Re: Handling terminals without assigned feature, for code generation [message #1792126 is a reply to message #1791796]

Thu, 12 July 2018 04:33

Christian Dietrich

Messages: 12229
Registered: July 2009

Senior Member

Hi,

you can do two things:

- in the generator you can test if the binary expression has a lower precedence than the one that it is enclosed by and the generate it with parentesis.
- you can use org.eclipse.xtext.nodemodel.util.NodeModelUtils.findActualNodeFor(EObject) to find the node model and traverse it to see if there where ( )

Need professional support for Xtext, Xpand, EMF?
Go to: https://xtext.itemis.com
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[Updated on: Thu, 12 July 2018 04:52]

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