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Registering references to elements in a generated file [message #1765944]

Wed, 14 June 2017 14:29

Dustin Altermann

Messages: 1
Registered: June 2017

Junior Member

Hi,

I got a bit of an awkward problem with references to a generated file A.

Grammar:

SpecMap: 
	'specmap' name = QualifiedName (mappings += Mapping)*
;

Mapping:
	name=ID '=' stuffAfterThatWhichDoesntMatterHere
;

The generated code A will obey to this grammer and therefore be "written" in the same DSL as the code B it's being generated from.

Now i have other code C (same DSL tho) that is supposed to reference this above generated file A and its elements ("mappings") using:

Import:
    'import' importedNamespace = ID ('/'ID)* ('.' ID)* '.*'?
;

import SpecMap.*

However after generation none of those references get resolved and i need to manually go into this file A and (re-)save it, so that all the names get registered.

Question: How do i trigger this registration process manually in this scenario, so that Eclipse can resolve all the references right away?

I tried many things already like e.g. parsing the entire generated file A as suggested in https://www.eclipse.org/forums/index.php/t/1086824/ but i only get this crazy error: https://www.eclipse.org/forums/index.php/t/545784/ so now i'm kind of clueless.

Thank you

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Re: Registering references to elements in a generated file [message #1766167 is a reply to message #1765944]

Fri, 16 June 2017 18:02

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

This is not possible. An eclipse builder does not get notified by changes it does itself

Thus you would need a custom eclipse builder that runs after the xtext builder and touches the files the xtext builder created soo that eclipse will call the xtext builder for these files again

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

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