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Railroad image for grammar documentation [message #1149628] Tue, 22 October 2013 07:44 Go to next message
Axel Guckelsberger is currently offline Axel GuckelsbergerFriend
Messages: 344
Registered: July 2009
Senior Member
Hi all,

I wondered whether it is possible to generate a railroad image of a given
grammar on the fly.

What I've seen is the Spray project includes railroad images for it's
grammars in their user manual: https://spray.ci.cloudbees.com/job/spray-docs-build/lastSuccessfulBuild/artifact/docs/org.eclipselabs.spray.doc.user/docs/html/SprayUserGuide.html#TheSpraygrammars

During search I found the
org.eclipse.xtext.xtext.ui.graph.actions.ExportToFileAction class used by
the RailroadView. My guess would be that it is not easy to utilise this
functionality headlessly though.

So my question aims on best practices with regard to this. Does anybody have
experience with headless creation of these images? Or is it advantageous to
do the image exports manually to avoid excessive releng work?

Thanks in advance for your opinions,

Axel

[Updated on: Tue, 22 October 2013 07:46]

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Re: Railroad image for grammar documentation [message #1149647 is a reply to message #1149628] Tue, 22 October 2013 07:59 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 13488
Registered: July 2009
Senior Member
Hi,

this already ships with Xtext.
(Have a look at Xtext Syntax Graph View)

~Christian

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: Railroad image for grammar documentation [message #1149696 is a reply to message #1149647] Tue, 22 October 2013 08:37 Go to previous messageGo to next message
Axel Guckelsberger is currently offline Axel GuckelsbergerFriend
Messages: 344
Registered: July 2009
Senior Member
Hi Christian,

thanks! I know that this included in Xtext. My question is whether and how this image export could also be used headlessly or would it be more adequate/easy/achievable to do this manually after each change in the grammar?

Axel

[Updated on: Tue, 22 October 2013 08:38]

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Re: Railroad image for grammar documentation [message #1149707 is a reply to message #1149696] Tue, 22 October 2013 08:47 Go to previous message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 13488
Registered: July 2009
Senior Member
Hi,

i think it should be no problem to wrap the code (org.eclipse.xtext.xtext.ui.graph) into a own fragment.
(I dont know how easy it is to store a draw2d canvas as an image)

Maybe you can reuse parts of ExportToFileAction

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

[Updated on: Tue, 22 October 2013 08:48]

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