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Generated Files do not auto-compile [message #1801618]

Wed, 23 January 2019 16:09

Konrad Jünemann

Messages: 49
Registered: December 2018

Member

Hello,

I have two (related) "layered" DSLs, DSL_A and DSL_B. When A files are compiles, B files are generated. Together with other, user-defined B files, they should then be compiles again to generate C-files (simple text files).

I am using the classpath approach proposed in the Xtext book to compile files, i.e., only files on the classpath are deemed visible.

The files are stored as follows:

MyProject
-> A_files/src/ ... <-- user-defined A-files are stored here
-> B_files/src/ ... <-- user-defined B-files are stored here
-> B_files/src-gen/ ... <-- generated B-files are stored here
-> C_files/ ...

All src and src-gen Folders are configured as source-folders.

My problem is that generated B_files are not parsed automatically after generation, i.e., the EMF Index contains none of the generated B-elements. This problem also occurs after a clean build.

In order to compile the B files a have to remove and add the B_files/src-gen/ folder manually.

How can I ensure that generated B-files are parsed automatically after being generated?

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Re: Generated Files do not auto-compile [message #1801619 is a reply to message #1801618]

Wed, 23 January 2019 16:13

Christian Dietrich

Messages: 13313
Registered: July 2009

Senior Member

This does not work in Xtext. you could introduce a second builder that touches the B files that we generated

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/xtext/
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Generated Files do not auto-compile [message #1801621 is a reply to message #1801619]

Wed, 23 January 2019 17:45

Konrad Jünemann

Messages: 49
Registered: December 2018

Member

Ok. Thanks for clearing that up!

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Re: Generated Files do not auto-compile [message #1801666 is a reply to message #1801621]

Thu, 24 January 2019 12:44

Konrad Jünemann

Messages: 49
Registered: December 2018

Member

Follow-up Question:

Would a good approach be to introduce a second Builder (as you recommended), giving the first Builder only a BuilderParticipant for *.Adsl - files and the second builder only one for *.Bdsl-files? The idea being that the first builder only compiles A files while the second one compiles B files. As the builders are independent, they should both receive all ResourceDeltas, correct?

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Re: Generated Files do not auto-compile [message #1801671 is a reply to message #1801666]

Thu, 24 January 2019 14:21

Christian Dietrich

Messages: 13313
Registered: July 2009

Senior Member

no you need only a builder for the file extension that is generated. in this case the .bdsl files.
the xtext builder builds both.
the new builder just touches b.dsl files so that xtext seems them

Need professional support for Xtext, Xpand, EMF?
Go to: https://www.itemis.com/en/xtext/
Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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