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Access a model element from a value converter [message #1779725]

Thu, 11 January 2018 19:54

Pent Down

Messages: 4
Registered: January 2018

Junior Member

Hello,

I my grammar I have an element like this:

Project:
'PROJECT' (description=STRING)?
'UNITS'
'LENGTH' lengthUnitDefault=UNIT
'SPEED' speedUnitDefault=UNIT

This element is instantiated first. Down the road I need to access the lengthUnitDefault data member from a IValueConverter. How to I 'grab' the Project element?

Sorry this may be obvious but I am learning XText.

Regards
PD

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Re: Access a model element from a value converter [message #1779734 is a reply to message #1779725]

Thu, 11 January 2018 22:31

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Have a look at the passsed node

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Access a model element from a value converter [message #1779738 is a reply to message #1779734]

Thu, 11 January 2018 23:44

Pent Down

Messages: 4
Registered: January 2018

Junior Member

Thank you for the help

I use the node to get up in the AST and then use NodeModelUtils.findActualSemanticObjectFor(node) to get to it:

def getMyEObject(INode node) {
var tmpNode = node
while (tmpNode !== null) {
var o = NodeModelUtils.findActualSemanticObjectFor(tmpNode)
if (o !== null) {
if (o instanceof MyEObject) {
return o as MyEObject
}
}
tmpNode = tmpNode.parent
}
}

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