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Content assist edit positions and template variables [message #1837227]

Mon, 25 January 2021 14:00

Dimo Petroff

Messages: 16
Registered: November 2018

Junior Member

Just wondering if I should expect these to work via LSP (e.g. in Theia) at all. In general, there doesn't seem to be any clear documentation that I've been able to find about what Xtext IDE features are supported via LSP, so it's difficult to tell what kind of feature parity to expect between the native Eclipse IDE plugin and an LSP IDE and where the gaps might be. There is not even an LSP section on the Xtext documentation website, while the Web Support section doesn't go into enough detail, and seemingly doesn't cover Monaco-based Theia, so it looks like it's wildly out of date. If I remember correctly, Web Support is basically abandoned in favour of LSP, so this makes sense, I just don't understand why there's no documentation for the LSP side of things.

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Re: Content assist edit positions and template variables [message #1837228 is a reply to message #1837227]

Mon, 25 January 2021 14:02

Christian Dietrich

Messages: 14113
Registered: July 2009

Senior Member

the main reason is: nobody writes it. and nobody funds the writing.
at least templates work with vscode
https://github.com/itemis/xtext-languageserver-example/blob/f2291241f2a1e97c8ebab8187e2d30460923dee1/org.xtext.example.mydsl.ide/src/org/xtext/example/mydsl/ide/contentassist/MyDslIdeContentProposalProvider.xtend#L21

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

[Updated on: Mon, 25 January 2021 14:04]

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Re: Content assist edit positions and template variables [message #1837229 is a reply to message #1837228]

Mon, 25 January 2021 14:28

Tamas Miklossy

Messages: 142
Registered: February 2016

Senior Member

Hello Dimo,

indeed, the Xtext-LSP section is still missing from the official Xtext documentation .
The corresponding GitHub issue is available under https://github.com/eclipse/xtext/issues/1141

Tamás

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Re: Content assist edit positions and template variables [message #1838130 is a reply to message #1837229]

Wed, 17 February 2021 06:49

Tamas Miklossy

Messages: 142
Registered: February 2016

Senior Member

Hello Dimo,

The LSP Support section has been added to the Xtext documentation.

Tamás

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Re: Content assist edit positions and template variables [message #1838244 is a reply to message #1838130]

Fri, 19 February 2021 12:32

Dimo Petroff

Messages: 16
Registered: November 2018

Junior Member

Thanks, that makes things clearer. I was actually trying to figure out if the AbstractIdeTemplateProposalProvider API with the variable and cursor methods works in LSP, but I see that the resulting edit positions are ignored in ContentAssistService. Is there a different API available, or do I need to hard-code the variables in my templates using the LSP snippet syntax?

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