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AbstractFormatter2 [message #1851241]

Thu, 31 March 2022 15:09

John Henbergs

Messages: 216
Registered: October 2020

Senior Member

Hi,

I am trying to rewrite the formatter for a dsl. I have made the change in MyDslFormatter.xtend, I have generated Xtext artefacts, ran a new runtime instance, and there I have made change to the grammar via the tree editor, to see if the formatter would work, but nothing. The formatter file looks fine. Could there be any intermediate step that I am not aware of?

Thank you,
John

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Re: AbstractFormatter2 [message #1851246 is a reply to message #1851241]

Thu, 31 March 2022 17:16

Christian Dietrich

Messages: 14434
Registered: July 2009

Senior Member

did you check the formatter examples + tests in example projects shipped with xtext?
is your formatter called?
did you just create it or did you tell the workflow to create it?
formatter = {
generateStub=true
generateXtendStub=true
}

this will also add bindings to abstractyourdsl module

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[Updated on: Thu, 31 March 2022 17:18]

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Re: AbstractFormatter2 [message #1851247 is a reply to message #1851246]

Thu, 31 March 2022 17:25

John Henbergs

Messages: 216
Registered: October 2020

Senior Member

Yes, I did it according to the DomainModel Example. I added these lines that you have mentioned here in the mwe I ran it, got the formatter, and made the changes there. Then I generated Xtext artefacts, ran a runtime instance, made changes in the tree editor, but they were not reflected in the textual file.

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Re: AbstractFormatter2 [message #1851250 is a reply to message #1851247]

Thu, 31 March 2022 18:04

Christian Dietrich

Messages: 14434
Registered: July 2009

Senior Member

so you do not call formatter explicitely?
if no how do you create textual model?!?

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Re: AbstractFormatter2 [message #1851251 is a reply to message #1851250]

Thu, 31 March 2022 18:38

John Henbergs

Messages: 216
Registered: October 2020

Senior Member

No, all I do is add this to the mwe

 formatter = {
	generateStub = true
	generateXtendStub = true
}

I run it and then in the MyDslFormatter.xtend

I write something similar to this:

package org.xtext.example.mydsl.formatting2

import com.google.inject.Inject

import org.eclipse.xtext.formatting2.AbstractFormatter2
import org.eclipse.xtext.formatting2.IFormattableDocument
import org.xtext.example.mydsl.mydsl.Root
import org.xtext.example.mydsl.services.MyDslGrammarAccess

class MyDslFormatter extends AbstractFormatter2 {
	
	@Inject extension MyDslGrammarAccess

	def dispatch void format(Root root, extension IFormattableDocument document) {
	root.regionFor.keyword("this").prepend[newLine]
	root.regionFor.keyword("{").prepend[newLine]
}

Generate Xtext artefacts, open the runtime instance, New-> Other->MyDsl Model

Should I call the formatter somewhere explicitly?

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Re: AbstractFormatter2 [message #1851255 is a reply to message #1851251]

Thu, 31 March 2022 19:20

Christian Dietrich

Messages: 14434
Registered: July 2009

Senior Member

You can do a rightklick format on the dsl editor?
How do you expect the formatter to be executed ?!?

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Blog : https://www.dietrich-it.de

[Updated on: Thu, 31 March 2022 19:20]

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Re: AbstractFormatter2 [message #1851256 is a reply to message #1851255]

Thu, 31 March 2022 19:21

Christian Dietrich

Messages: 14434
Registered: July 2009

Senior Member

And of course you might need to traverse to the object that has the keywords you mention
Debug the region for calls
They should not return null

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