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Home » Modeling » TMF (Xtext) » Xtext Language Server not working, how to investigate?
Xtext Language Server not working, how to investigate? [message #1803796] Sun, 10 March 2019 15:03 Go to next message
Alexandre Lombard is currently offline Alexandre LombardFriend
Messages: 2
Registered: March 2019
Junior Member

I'm working with a language based on Xtext ( and I want to export a Language Server in order to use this language within Visual Studio Code.
So far I've made changes to the original project to generate the JAR of the Language Server ( and I've written the VS Code extension (

Unfortunately it doesn't work. It's probably my bad but I don't know how to investigate.
The problem could come from the Language Server itself (maybe an issue when generating the JAR?), the client part or the communication between them.

So, is there any way to investigate about it? Also, is it possible to check if the language server is behaving correctly and to test it?
Maybe by manually sending requests to the server?

Thanks in advance.
Re: Xtext Language Server not working, how to investigate? [message #1803919 is a reply to message #1803796] Wed, 13 March 2019 16:19 Go to previous message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 13615
Registered: July 2009
Senior Member
i would recommend you to create an extension with socket mode and start server locally in debug mode

alternatively you could patch the launch script to start server with remote debugging

Need professional support for Xtext, Xpand, EMF?
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[Updated on: Wed, 13 March 2019 16:20]

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